CN204459324U - Automatic flow control system and guide valve component - Google Patents
Automatic flow control system and guide valve component Download PDFInfo
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- CN204459324U CN204459324U CN201420735840.8U CN201420735840U CN204459324U CN 204459324 U CN204459324 U CN 204459324U CN 201420735840 U CN201420735840 U CN 201420735840U CN 204459324 U CN204459324 U CN 204459324U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000008676 import Effects 0.000 claims description 81
- 230000009467 reduction Effects 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 7
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- 230000004888 barrier function Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
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- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a kind of automatic flow control system and guide valve component, its for the main valve device conbined usage be arranged on water pipe, comprise differential pilot valve device, the first pilot valve and the second pilot valve, wherein the entrance of differential pilot valve device is connection port, outlet connection first pilot valve.Differential pilot valve device opened by pressure sensitive or close self control current by and not by the first pilot valve.First pilot valve cuts out pilot valve to reduce flow after responding to the first pressure.When the second pilot valve is opened, current accelerate through, and the second pilot valve responds to the second pressure by cutting out the flow self reducing water.The utility model can regulate downstream pressure according to flow automatically, without the need to power configuration, when sensing the high flow capacity demand of an exception, avoiding main valve device may open too much and cause downstream pressure superpressure and equipment after damaging valve, ensureing reliability and the long lifetime of system.
Description
Technical field
The utility model relates to a kind of automatic flow control system and guide valve component.
Background technique
Use auto-control of pressure release valve to reduce system pressure and to control a default downstream pressure constant in water system, make water system such as hot water cavity be unlikely to occur the phenomenon of superpressure.And this force value preset is decided by the traffic demand of valve.Often there is the leakage of a large amount of potable water in water system, this leakage causes due to the seepage of pipe network often, and the amount of seepage is often relevant with system pressure.The pressure of water system sets according to the pressure of supply water standard of waters corporation usually, normally sets according to the operating conditions of water use peak phase and fire-fighting water.This preset pressure value the non-water use peak phase particularly night too high often.
After this valve valve, preset pressure value is different, and namely downstream pressure can change.This valve according to the changes in flow rate of system pressure, turning down with preset pressure value during water low ebb, now can reduce pipeline leakage, when the water use peak phase or fire-fighting water time, preset pressure automatic adjustment height, meets water demand.This type of regulates the valve of setting value to generally include electronic control type and two kinds, Flow-rate adjustment type automatically.The usual control mode more complicated of valve of electronic control type, and need to provide power supply.Such as battery or needs connect municipal power supply.The configuration of power supply adds input and construction cost, so limit the use occasion of this type of valve.Flow control valve can regulate downstream pressure according to flow automatically, due to without the need to power configuration, can be suitable for a variety of occasion.
A company BERMAD being positioned at Israel produces the automatic pressure reducing valve of the flow control type of a type.This valve carrys out the different pressure difference in sensing valve control chamber barrier film two ends with a flow inductor.The amount of movement of barrier film is passed to control pilot valve by the catch bar of a rigidity, then regulates the opening state of required setting pressure control bound more conversely by this pilot valve.The barrier film of control chamber soaks in a fluid, the amount of movement of the barrier film of serious restriction, and requires that the sensitivity of catch bar and Valve controlling pilot valve is higher.When the flow transducer of this valve senses the high flow capacity demand of an exception, main valve may be opened too much, causes downstream pressure superpressure and equipment after damaging valve.
Model utility content
The utility model object is: provide a kind of automatic flow control system and guide valve component.
First technological scheme of the present utility model is: a kind of automatic flow control system, itself and main valve device conbined usage, this main valve device comprises the valve body of the entrance point be connected with water pipe first end and the outlet end be connected with water pipe second end, to be arranged between entrance point and outlet end and mobilizable main valve member in off position and between opening state, comprise diaphragm or piston and and main valve member, valve body forms a control chamber and the main valve operator impelling main valve member movable in off position and between opening state according to the pilot pressure of control chamber jointly, be arranged on water pipe first, between two ends and for generation of the restricting means of pressure reduction, it comprises:
Connection set comprise be connected with the import of main valve device by an intake tunnel ingress port, guide port for the control port and be communicated with the control chamber of main valve device by control channel;
Guide valve component comprises:
Differential pilot valve device comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, arrive water pipe second end again, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure; And
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, during to make differential valve element in the closed position, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the first pilot valve device according to the second pressure; Wherein the first pressure is different from the second pressure.
Preferably, described differential pilot valve device comprise there is differential valve import and differential valve outlet main body, by the differential diaphragm being divided internally into the first guidance cavity and the second guidance cavity of main body, wherein differential valve component couples to this differential diaphragm can carry out corresponding movement according to the pressure change of the first guidance cavity and the second guidance cavity.
Preferably, described first pressure ratio second pressure is large.
Preferably, described differential valve element is normally closed, and stops the fluid of differential pressure pilot valve device to flow.
Preferably, once pressure reduction rises, differential valve element turns to open position from closed position, guides current from differential pressure pilot valve device to the first pilot valve device.
Preferably, once pressure reduction declines, differential valve element turns to closed position from open position.
Preferably, the pressure increase of water pipe second end, the second pilot valve device is closed.
Preferably, the second pilot valve device is closed lower than during the first pilot valve device at pressure.
Second technological scheme of the present utility model is: a kind of guide valve component, and it comprises:
Differential pilot valve device comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, arrive water pipe second end again, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure;
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, during to make differential valve element in the closed position, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the first pilot valve device according to the second pressure.
Preferably, described differential pilot valve device comprise there is differential valve import and differential valve outlet main body, by the differential diaphragm being divided internally into the first guidance cavity and the second guidance cavity of main body, wherein differential valve component couples to this differential diaphragm can carry out corresponding movement according to the pressure change of the first guidance cavity and the second guidance cavity.
Preferably, described first pressure ratio second pressure is large.
Preferably, described differential valve element is normally closed, and stops the fluid of differential pressure pilot valve device to flow.
Preferably, once pressure reduction rises, differential valve element turns to open position from closed position, guides current from differential pressure pilot valve device to the first pilot valve device.
Preferably, once pressure reduction declines, differential valve element turns to closed position from open position.
Preferably, the pressure increase of water pipe second end, the second pilot valve device is closed.
Preferably, the second pilot valve device is closed lower than during the first pilot valve device at pressure.
3rd technological scheme of the present utility model is: a kind of automatic flow control system, is characterized in that it comprises:
Main valve device, it comprise the entrance point be connected with water pipe first end and the outlet end be connected with water pipe second end valve body, to be arranged between entrance point and outlet end and mobilizable main valve member in off position and between opening state, comprise diaphragm or piston and and main valve member, valve body jointly form a control chamber and impel main valve member in off position and main valve operator movable between opening state, to be arranged between first and second end of water pipe and for generation of the restricting means of pressure reduction according to the pilot pressure of control chamber;
Connection set, it comprise be connected with the import of main valve device by an intake tunnel ingress port, guide port for the control port and be communicated with the control chamber of main valve device by control channel; And
Guide valve component, it comprises:
Differential pilot valve device comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, arrive water pipe second end again, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure;
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, when being in open position to make differential valve element, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the first pilot valve device according to the second pressure; Wherein the first pressure is different from the second pressure.
Preferably, described differential pilot valve device comprise there is differential valve import and differential valve outlet main body, by the differential diaphragm being divided internally into the first guidance cavity and the second guidance cavity of main body, wherein differential valve component couples to this differential diaphragm can carry out corresponding movement according to the pressure change of the first guidance cavity and the second guidance cavity.
Preferably, described first pressure ratio second pressure is large.
Preferably, described differential valve element is normally closed, and stops the fluid of differential pressure pilot valve device to flow.
Preferably, once pressure reduction rises, differential valve element turns to open position from closed position, guides current from differential pressure pilot valve device to the first pilot valve device.
Preferably, once pressure reduction declines, differential valve element turns to closed position from open position.
Preferably, the pressure increase of water pipe second end, the second pilot valve device is closed.
Preferably, the second pilot valve device is closed lower than during the first pilot valve device at pressure.
The utility model advantage is:
The utility model can regulate downstream pressure according to flow automatically, without the need to power configuration, when sensing the high flow capacity demand of an exception, avoiding main valve device may open too much and cause downstream pressure superpressure and equipment after damaging valve, ensureing reliability and the long lifetime of system.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the schematic diagram of the first embodiment in the utility model;
Fig. 2 is the schematic diagram of the second embodiment in the utility model.
Embodiment
Embodiment: in order to simple and easy and clearly describe multiple details, in this illustrative example.Example may not be in detail special, and some known methods, process and assembly do not explain one by one, and this explanation is non-is only limitted to the present embodiment.Shown in figure 1, the utility model provides a kind of specific embodiment of guide valve component, and it comprises:
One differential pilot valve device, it comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device, it comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, then to water pipe second end, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure; And
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, when being in open position to make differential valve element, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the second pilot valve device according to the second pressure.
The utility model additionally provides a kind of specific embodiment of automatic flow control system 10, it comprise to be connected with pipe outlet portion 16 with water pipe import department 14 in case current by the main valve device 12 of water pipe, the guide valve component 18 be connected with main valve device 12 by each passage, filter 20, for the current that receive through metering orifice 24 and be traditional T-shaped flow stabilizer 22.Wherein metering orifice 24 and T-shaped flow stabilizer are separated from each other and are analysed and observe, with clear diagram.
Main valve device 12 comprise the entrance point 28 having and be connected with water pipe import department 14 and the outlet end 30 be connected with pipe outlet portion 16 valve body 26, be arranged on main valve seat 32 between entrance point 28 with outlet end 30 and movable and main valve member 34 that is that coordinate with main valve seat 32 between complete open position and closed position.Main valve member 34 is in the closed position in FIG.Main valve device 12 can comprise deformable and the main valve diaphragm 36 that fixes of its central part and main valve member 34 and fix with valve body 26 and provide the outer rim of control chamber 38 further.Valve body 26 has and to be connected with control chamber 38 and the control port 40 that passes through of the current made.Main valve member 34 to be arranged on guide rod 42 and to have the seal ring coordinated with valve seat 32.Main valve diaphragm 36 is sandwiched between two-part of main valve member 34.As a rule, main valve device 12 also can adopt piston instead of diaphragm.
Valve body 26 comprise guide guide rod 42 axial motion and main valve member 34 is entered or the cooperation that departs from valve seat 22 with control through main valve device 12 current the guide of valve up and down 44,46, can extend between main valve member 34 and valve body and apply the pressure of a closedown in conjunction with the hydraulic pressure in control chamber 38 to main valve member 34 in control chamber 38.
Main flow control valve conventional in above content description related domain controls flow by ram's horns.Although the main control valve structure of different MANUFACTURER is not quite similar, principle is all unlatching or closedown by relying on the pressure of control chamber to realize valve.
Inlet/outlet pressure detection port 60,62 is separately positioned on entrance point 28 and is connected to detect wherein respective pressure with on outlet end 30 with current, and the pressure signal thus by producing activates main valve device 12.
One end of inlet passage 64 is connected with inlet pressure detection port 60, and the other end is then connected with filter 20.Connecting passage 66 connects filter 20 to metering orifice 24, and directly can be fixed to the inlet end 70 of T-shaped flow stabilizer 22.T-shaped flow stabilizer 22 also can have control end 74 and leading end 72.Wherein control end 74 has the ball valve 70 of spring to be connected with interior, and this ball valve adjusts for flow and controls the flow relative to control port 40.
The two ends of control channel 75 are connected with the control port 40 of main valve device 12 and the control end 74 of T-shaped flow stabilizer respectively, and water flow energy is circulated between control port 40 and control end 74.The leading end 72 of T-shaped flow stabilizer is coupled to guide valve component 18 by guiding channel 76, and current are communicated with between guide valve component 18 and leading end 72.
Guide valve component 18 comprises differential guide valve component 80, for reducing the first pilot valve device 82 of pressure and the second pilot valve device 84 for reducing pressure.
Differential guide valve component 80 comprises main body 86, and it comprises the differential valve import 88 be communicated with the leading end 72 of T-shaped flow stabilizer 22 by guiding channel 76, the differential valve be connected with the inlet end of the first pilot valve device 82 exports 90 and differential valve valve seat 93 between differential valve inlet/outlet 88,90.Differential valve element 92 to be arranged on valve rod 94 and can be movable and to open position away from differential valve valve seat 93, makes differential valve import 88 and differential valve export 90 and is interconnected and impels current to flow through main body 86.From open position, differential valve element 92 moves towards differential valve valve seat 93 and differential valve element 92 is coordinated with differential valve valve seat 93 close differential valve to stop current through main body 86.
The movement of valve rod 94 and differential valve element 92 is controlled by the differential pressure controller 96 of valve body 86.Differential pressure controller 96 comprises one and extends through the control section of main body 86 and outer rim is clipped in differential diaphragm 98 wherein by valve body two-part.Differential diaphragm 98 is fixed on valve rod 94 to make the motion of differential diaphragm 98 cause the motion of valve rod 94.
The upper area of valve body 86 is separated into upper control room 100 and lower control room 102 by differential diaphragm 98.The outlet pressure that interface 104 on lower control room 102 and the main valve device 12 be made up of fluid line export side detects mouth 62 and is connected and sets up fluid passage.Interface 108 on upper control room 100 is connected by loop 111 with pipe outlet portion 16.
Spring 112 provides an active force acted on differential diaphragm 98.This active force is regulated by a bolt 114, and this bolt comprises the end 116 that acts on spring 112.Active force on spring 112 is acted on by increasing or reduce bolt 114, thus the spacing increasing or reduce between differential diaphragm 98 and bolt end 116, increase or reduce with this active force acted on differential diaphragm 98.Lower control room 102 upwards pressure to 98 1, differential diaphragm, and this source pressure is in the outlet end 30 of main valve device 12.The pressure that upper control room gives 98 1, differential diaphragm downward, this source pressure is in the arm conduit in pipe outlet portion 16.Differential pilot valve device 80 is normally closed, and the flow direction of such current is prevented from from import 88, by valve body 86, then arrives outlet end 90.By an enough large upwards active force, differential pilot valve device 80 likely can be opened, and this active force comes from the pressure reduction in the outlet end 30 on main valve device 12 and pipe outlet portion 16.
Flow-rate limiting device 118, all flow restriction plate 118 as shown in Figure 1 produce pressure reduction for creating between the outlet end 30 of main valve device 12 and pipe outlet portion 16.In addition, Flow restrictor may be a gate valve, a butterfly valve, or other suitable valves.When flow is very low or slowly, pressure reduction can very littlely even not exist.When flow is very large, pressure reduction also can be very large.
First and second pilot valve device 82,84 all comprises the outer cover 122 that a pilot valve body 120 is connected with a pilot valve body 120.Pilot valve body 120 comprises pilot valve import 124 and pilot valve outlet 126.The fluid that wherein pilot valve import 124 realizes exporting with pilot valve 126 by the honeycomb duct 128 of valve body 120 inside is connected.Honeycomb duct 128 comprises the valve seat 130 being positioned at end, and its one end is installed on pilot valve body 120.Elastic diaphragm 132 is clipped between pilot valve body 120 and outer cover 122.Elastic diaphragm and movable block (not shown) are assembled together, and movable block is flexible or running independent of honeycomb duct.Movable block is fixed on inner valve 136.Inner valve 136 is designed to and valve seat cooperating, and when inner valve 136 is together with valve seat 130 compact siro spinning technology, honeycomb duct 128 is closed, and when there is gap between inner valve 136 and valve seat 130, honeycomb duct 128 opens.
Spring 138 is installed on outer cover 122, and provides an active force by inner guide pin bushing 140 to elastic diaphragm 132.Threaded bolt 142 can control the pressure increase or the decline that are applied to elastic diaphragm 132 upper spring 138, so just can increase or reduce along the length of outer cover 122 to the active force of barrier film 132 by reducing or increase spring 138.
First pilot valve device 82 is often opened, and promotes that liquid flows through the first pilot valve import 124, along honeycomb duct 128 and by the first pilot valve outlet 126.Water flow pressure in valve body 120 acts on elastic diaphragm 132.When the stream hydrodynamic pressure acted on barrier film 132 be greater than spring 128 act on the elastic force of barrier film 132 time, barrier film 132 is bending to housing 122 direction, thus drives movable block and inner valve 136 to move to valve seat 130.
Pressure in first pilot valve device 82 of closing is adjustable, regulates by regulating threaded bolt 142.First pilot valve device 82 and the second pilot valve device 84 are arranged to 2 different pressure parameters.Such as, the pressure that the first pilot valve device 82 sets is higher than the second pilot valve device 84, and such pressure is when the setting pressure lower than the first pilot valve device, and the second pilot valve device is closed.
The leading end of T-shaped flow stabilizer 22 is connected with guiding channel 76.Guiding channel 76 is branched, such as, by a T-shaped or breeches joint, come with the entrance point 88 of differential pilot valve device 80 and and the guiding import 126 of the second pilot valve device 84 link together.The outlet end 90 of differential pilot valve device 80 is connected by the guiding import 126 of pipeline 146 interface with the first pilot valve device 82.Guiding import 126 and the guiding import 126 of the second pilot valve device 84 of the first pilot valve device 82 are mutually connected separately by pipeline 148 and 150 with pipe outlet portion 16 together.
Be in operation, depend on the flow of liquid by main valve device 12 from the first pilot valve device 82 to the second pilot valve device 84 with from the flow control switch of the second pilot valve device 84 to the first pilot valve device 82, the flow of main valve device 12 then depends on the flow needs in downstream.
Along with the increase of flow, also increased by the pressure reduction in flow-rate limiting device 118 thereupon.The water flow pressure coming from outlet end 30 acts on the differential diaphragm 98 of differential valve device 80, and the hydrodynamic pressure coming from pipe outlet portion 16 that direction is contrary with it also acts on differential diaphragm 98 simultaneously.Under enough large flow, also increased by the pressure reduction in flow-rate limiting device 118 thereupon, the hydrodynamic pressure so coming from outlet end 30 can be greater than the hydrodynamic pressure coming from pipe outlet portion 16, therefore the compression of differential motion of membrane and spring 112 is caused, thus making valve rod 94 move to be with moving valve components 92 to be separated with valve seat 92, differential valve device 80 normally closed so just opens.Now liquid flow direction is for flow to outlet end 90 from entrance point 88 by differential valve device 80.Flow of fluid is simultaneously also through T-shaped flow stabilizer 22, guiding channel 76, differential valve device 80, pipeline 146 and the first pilot valve device 82.First pilot valve device 82 allows by a flow larger than metering orifice 24, therefore liquid flows out the control room 38 of main valve device 12, pressure on such barrier film 36 reduces, and causes main valve member 34 and barrier film 36 to move to the direction of opening, is also increased by the flow of main valve device 12 thereupon.
When flow increases, the downstream pressure at place of pipe outlet portion 16 increases thereupon, barrier film 132 upward pressure be applied in the second pilot valve device 84 also can increase thereupon, time lower than the first pilot valve device 82 pressure, the second pilot valve device 84 is closed, downstream pressure in outlet end branch pipeline increases gradually, cause the closedown of the second pilot valve device 84, leave the first pilot valve device 82 to control the downstream pressure in pipe outlet portion 16.
Along with the flow that main valve device 12 reduces gradually, during downstream demand reduces, also diminished by the pressure reduction of flow-rate limiting device 118.When the pressure reduction by flow-rate limiting device 118 is not enough to overcome the elastic force of spring 112 and causes normally closed differential valve device 80 to stay open, valve part 34 moves towards valve seat 92.Therefore the current flowing to differential valve device 80 from entrance point 88 are truncated, and no longer include current and flow in the first pilot valve device 82.Driving valve device 80 of being on duty is closed and the second pilot valve device 84 is not also opened time, the fluid flow that flows to T-shaped flow stabilizer 22 from metering orifice 24 is the fluid flow be greater than guiding channel 76.Therefore, the control room 38 of flow direction main valve device 12.The liquid in the control room 38 of inflow main valve device 12 adds the pressure on main valve diaphragm 36, and therefore valve part 34 moves towards the direction closed together with main valve diaphragm 36, reduces the flow by main valve device 12.Along with the reduction of flow, the pressure in pipe outlet portion 16 reduces, and the second pilot valve device 82 is also open thereupon.
As shown in Figure 2, it is the second embodiment of automatic flow control system in the utility model, and comprise a guide valve component, wherein many constituent elements are very similar to the structure in Fig. 1, are not repeated.
In the present embodiment, flow-rate limiting device 218 is flow restriction plate, and it for producing pressure reduction between water pipe import department 14 and the entrance point 28 of main valve device 12.As described above, flow-rate limiting device may be a gate valve, a butterfly valve, or other valves be applicable to.When flow is very low or very slowly, pressure reduction is not almost not even.When flow is very large, pressure reduction also can be very large.
In the present embodiment, the interface 104 on the lower control room 102 of differential pilot valve device 80 is by pipeline 206 and be connected at the interface 210 of water pipe import department 14.Interface 60 on the interface 108 in upper control room 100 and the entrance point 28 of main valve device 12 is connected.
Differential pilot valve device 80 is normally closed, and now flow direction is from import 88, is prohibited to outlet end 90 by valve body 86.Enough large along with upwards applying pressure, cause the pressure reduction produced between the entrance point 28 of water pipe import department 14 and main valve device 12, differential pilot valve device 80 can be opened.
Be in operation, depend on the flow of current by main valve device 12 from the first pilot valve device 82 to the second pilot valve device 84 with from the flow control switch of the second pilot valve device 84 to the first pilot valve device 82, current depend on the flow needs in downstream by the flow of main valve device 12.
Along with the increase of flow, through controlling the pressure reduction of flow-rate limiting device 218 also in increase, hydrodynamic pressure acts on the differential diaphragm 98 of differential pilot valve device 80 from the entrance location of water pipe.Entrance point 28 hydrodynamic pressure of main valve device 12 also acts on the differential diaphragm 98 of differential pilot valve device 80, in contrary corresponding position water inlet import department 14 hydrodynamic pressure same purpose in differential diaphragm 98.When there being enough flows, make pressure reduction enough large through overcurrent limitting device 118, water pipe import department 14 hydrodynamic pressure substantially exceeds the hydrodynamic pressure of entrance point 28.The compression of spring 112 and the motion of diaphragm make the differential pilot valve device 80 of Normally closed type open.Thus make valve rod 94 and valve assembly 92 lift off a seat 92.So fluid enters from import 88, through pilot valve device 80, discharge from outlet 90.Fluid flows over T-shaped flow stabilizer 22, then by guiding pipeline 76, differential pilot valve device 80, pipeline 146 and the first pilot valve device 82.Because the first pilot valve device 82 can bear the fluid flowing larger than metering orifice 24 aperture.Therefore, fluid flows out from the control chamber 38 of main valve device 12.Flow flows out from the control chamber 38 of main valve device 12 pressure decreased main valve diaphragm 36, and main valve member 34 is moved, and along with main valve diaphragm 36 moves to enable possition, the flow of increase can pass main valve device 12.
After flow rises, the increase of the pressure in downstream, pipe outlet portion 16, so higher downstream pressure acts on the diaphragm 132 of No. second pilot valve device 84, second pilot valve device 84 to the first pilot valve device 82 pressure is low, second pilot valve device 84 is closed automatically thus, the increase of pipe outlet portion 16 downstream pressure causes the second pilot valve device 84 to be closed, and is separated with the first pilot valve device 82, thus controls pipe outlet portion 16 downstream pressure.
Reduce along with by main valve device 12 flow, during being in this section of downstream demand minimizing, diminished by the pressure reduction of flow-rate limiting device 118, the deviation overcoming spring 112 is not enough to by the pressure reduction of flow-rate limiting device 118, the differential pilot valve device 80 of Normally closed type is caused to stay open state, valve member moves to seating position, so, flow stops from the flow of import 88 by differential pilot valve device 80, fluid no longer flows through the first pilot valve device 82, when differential pilot valve device 80 is closed, and the second pilot valve device is still in open mode, fluid enters T-shaped flow stabilizer 22 from metering orifice 24, than large by the flow of guiding pipeline 76, fluid flows into the control chamber 38 of main valve device 12, the control chamber 38 that fluid enters main valve device 12 adds the pressure to main valve diaphragm 36, main valve member 34 is caused to move, main valve diaphragm 36 is shifted to closed position, decrease the flow by main valve device 12, the pressure of position, pipe outlet portion 16 reduces, second pilot valve device 84 is opened.
Utilize the pressure reduction between water pipe import department 14 and entrance point 28 position, in the present embodiment, favourable water flow may pass through inlet tube 14 meeting closer to fluid layer.By comparing exit position 30 and outer pipe 16 position water flow, more unanimously control guide valve component 18 with being provided by current lamination difference.
In the utility model, automatic flow control system provides two pressure set-point and is applied on two Relief pilot valve devices.Although these embodiments explain single differential pilot valve device 80 and two pilot valve device 82 in detail, 84, but extra differential pilot valve device and Decompression Controlling control valve unit also can increase and provide extra pressure set-point to open and close to control main flow control valve device 12.Therefore provide three pressure set-point, instead of two, an extra differential pilot valve device and an extra control valve device can use.
In an above-mentioned embodiment, flow-rate limiting device is arranged between the entrance point 28 on water pipe import department 14 and main valve device 12, and in another example, flow-rate limiting device is arranged between the discharge port 30 of main flow control valve device and pipe outlet portion 16.Wherein flow-rate limiting device can be positioned at any other position of mating to provide pressure reduction thus to control differential pilot valve device.
More preferably, the opening and closing of main valve device are the demands based on swimming under water, control main flow control valve device by multiple different pressure set-point, and without the need to using the complex system that need consume the energy.
Certain above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, all should be encompassed within protection domain of the present utility model.
Claims (16)
1. an automatic flow control system, itself and main valve device conbined usage, this main valve device comprises the valve body of the entrance point be connected with water pipe first end and the outlet end be connected with water pipe second end, to be arranged between entrance point and outlet end and mobilizable main valve member in off position and between opening state, comprise diaphragm or piston and and main valve member, valve body forms a control chamber and the main valve operator impelling main valve member movable in off position and between opening state according to the pilot pressure of control chamber jointly, be arranged on water pipe first, between two ends and for generation of the restricting means of pressure reduction, it is characterized in that it comprises:
Connection set comprise be connected with the import of main valve device by an intake tunnel ingress port, guide port for the control port and be communicated with the control chamber of main valve device by control channel;
Guide valve component comprises:
Differential pilot valve device comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, arrive water pipe second end again, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure; And
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, when differential valve element is closed, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the second pilot valve device according to the second pressure; Wherein the first pressure is different from the second pressure.
2. automatic flow control system according to claim 1, wherein said differential pilot valve device comprise there is differential valve import and differential valve outlet main body, by the differential diaphragm being divided internally into the first guidance cavity and the second guidance cavity of main body, wherein differential valve component couples to this differential diaphragm can carry out corresponding movement according to the pressure change of the first guidance cavity and the second guidance cavity.
3. automatic flow control system according to claim 1, wherein said first pressure ratio second pressure is large.
4. automatic flow control system according to claim 1, wherein said differential valve element is normally closed, and stops the fluid of differential pressure pilot valve device to flow.
5. automatic flow control system according to claim 1, wherein once pressure reduction rises, differential valve element turns to open position from closed position, guides current from differential pressure pilot valve device to the first pilot valve device.
6. automatic flow control system according to claim 1, wherein once pressure reduction declines, differential valve element turns to closed position from open position.
7. automatic flow control system according to claim 1, the wherein pressure increase of water pipe second end, the second pilot valve device is closed.
8. automatic flow control system according to claim 1, wherein the second pilot valve device is closed lower than during the first pilot valve device at pressure.
9. a guide valve component, is characterized in that it comprises:
One differential pilot valve device comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, arrive water pipe second end again, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure;
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, when differential valve element is closed, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the second pilot valve device according to the second pressure.
10. guide valve component according to claim 9, wherein said differential pilot valve device comprise have differential valve import and differential valve outlet main body, by the differential diaphragm being divided internally into the first guidance cavity and the second guidance cavity of main body, wherein differential valve component couples to this differential diaphragm can carry out corresponding movement according to the pressure change of the first guidance cavity and the second guidance cavity, described first pressure ratio second pressure is large.
11. guide valve components according to claim 9, wherein said differential valve element is normally closed, and stops the fluid of differential pressure pilot valve device to flow, once pressure reduction rises, differential valve element turns to open position from closed position, guides current from differential pressure pilot valve device to the first pilot valve device; And once pressure reduction declines, differential valve element turns to closed position from open position.
12. guide valve components according to claim 9, the wherein pressure increase of water pipe second end, the second pilot valve device is closed, and the second pilot valve device is closed lower than during the first pilot valve device at pressure.
13. 1 kinds of automatic flow control system, is characterized in that it comprises:
Main valve device, it comprise the entrance point be connected with water pipe first end and the outlet end be connected with water pipe second end valve body, to be arranged between entrance point and outlet end and mobilizable main valve member in off position and between opening state, comprise diaphragm or piston and and main valve member, valve body jointly form a control chamber and impel main valve member in off position and main valve operator movable between opening state, to be arranged between first and second end of water pipe and for generation of the restricting means of pressure reduction according to the pilot pressure of control chamber;
Connection set, it comprise be connected with the import of main valve device by an intake tunnel ingress port, guide port for the control port and be communicated with the control chamber of main valve device by control channel; And
Guide valve component, it comprises:
Differential pilot valve device comprise the differential valve import, the differential valve that are connected with the guiding port of connection set export and be arranged on differential valve import and differential valve export between differential valve element, wherein differential pilot valve device makes differential valve element move between open position and closed position according to differential pressure, wherein open position is that current export from differential valve import to differential valve, and closed position is current is prevented from exporting from differential valve import to differential valve;
First pilot valve device comprises and to export the first pilot valve import, the first pilot valve that are connected with differential valve and export and the first pilot valve element between the first pilot valve import and the first pilot valve export, wherein the first pilot valve outlet is connected with water pipe second end, when differential valve element is opened, impel from differential valve outlet flow water out, through the first pilot valve device, arrive water pipe second end again, the first pilot valve device closes the first pilot valve element to be reduced by the current of the first pilot valve device according to the first pressure;
Second pilot valve device comprises the second pilot valve import, the second pilot valve that are connected with connection set and exports and the second pilot valve element, wherein the second pilot valve outlet is connected with water pipe second end, during to make differential valve element in the closed position, impel the water flowed out from connection set, through the second pilot valve device, arrive water pipe second end again, the second pilot valve device closes the second pilot valve element to be reduced by the current of the second pilot valve device according to the second pressure; Wherein the first pressure is different from the second pressure.
14. automatic flow control system according to claim 13, wherein said differential pilot valve device comprise have differential valve import and differential valve outlet main body, by the differential diaphragm being divided internally into the first guidance cavity and the second guidance cavity of main body, wherein differential valve component couples to this differential diaphragm can carry out corresponding movement according to the pressure change of the first guidance cavity and the second guidance cavity, described first pressure ratio second pressure is large.
15. automatic flow control system according to claim 13, wherein said differential valve element is normally closed, and stop the fluid of differential pressure pilot valve device to flow, once pressure reduction rises, differential valve element turns to open position from closed position, guides current from differential pressure pilot valve device to the first pilot valve device; And once pressure reduction declines, differential valve element turns to closed position from open position.
16. automatic flow control system according to claim 13, the wherein pressure increase of water pipe second end, the second pilot valve device is closed, and the second pilot valve device is closed lower than during the first pilot valve device at pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/145,686 | 2013-12-31 | ||
| US14/145,686 US9298190B2 (en) | 2013-10-31 | 2013-12-31 | Automatic flow control system and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459324U true CN204459324U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410705510.9A Active CN104806797B (en) | 2013-12-31 | 2014-11-27 | Automatic flow control system and guide valve component |
| CN201420735840.8U Withdrawn - After Issue CN204459324U (en) | 2013-12-31 | 2014-11-27 | Automatic flow control system and guide valve component |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410705510.9A Active CN104806797B (en) | 2013-12-31 | 2014-11-27 | Automatic flow control system and guide valve component |
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| CN (2) | CN104806797B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806797A (en) * | 2013-12-31 | 2015-07-29 | 新歌阀门有限公司 | Automatic flow control system and pilot valve assembly |
| CN105443844A (en) * | 2015-12-19 | 2016-03-30 | 无锡压缩机股份有限公司 | Vacuum regulating valve device used for vacuum displacement pump |
| US11526181B2 (en) | 2018-01-30 | 2022-12-13 | Illinois Tool Works Inc. | Mass flow controller with absolute and differential pressure transducer |
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| BR112020007908A2 (en) * | 2017-10-26 | 2020-10-20 | Dorot Management Control Valves Ltd. | valve and pressure regulation system, selection system and kit |
| CN108733097B (en) * | 2018-03-23 | 2021-05-11 | 西安航天动力试验技术研究所 | Water hammer pressure control method for parallel multi-discharge pipe water supply pipe network |
| CN108561755A (en) * | 2018-06-28 | 2018-09-21 | 苏州艾尔泰流体控制有限公司 | A kind of pressure management valve and water supply pipline system |
| CN111043365B (en) * | 2019-11-19 | 2024-09-17 | 武汉大禹阀门股份有限公司 | High pressure difference water control piston type pressure reducing valve |
| CN111365502A (en) * | 2020-04-16 | 2020-07-03 | 上海阀门厂股份有限公司 | A nuclear power plant voltage regulator pilot safety valve |
| CN114688262A (en) * | 2022-02-28 | 2022-07-01 | 武汉圣禹排水系统有限公司 | Pilot valve and vacuum valve |
| CN115789303A (en) * | 2022-11-17 | 2023-03-14 | 中国长江三峡集团有限公司 | Pipe burst safety valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3977423A (en) * | 1975-03-14 | 1976-08-31 | Phillips Petroleum Company | Valve control apparatus and method |
| US4617958A (en) * | 1985-07-25 | 1986-10-21 | Sundstrand Corporation | Control valve |
| US8091582B2 (en) * | 2007-04-13 | 2012-01-10 | Cla-Val Co. | System and method for hydraulically managing fluid pressure downstream from a main valve between set points |
| US20100071787A1 (en) * | 2007-10-29 | 2010-03-25 | Cla-Val Co. | System, including a variable orifice assembly, for hydraulically managing pressure in a fluid distribution system between pressure set points |
| US8381761B2 (en) * | 2009-05-21 | 2013-02-26 | Cla-Val Co. | Pressure management control valve assembly |
| CN104806797B (en) * | 2013-12-31 | 2018-02-23 | 缪勒Sv有限公司 | Automatic flow control system and guide valve component |
-
2014
- 2014-11-27 CN CN201410705510.9A patent/CN104806797B/en active Active
- 2014-11-27 CN CN201420735840.8U patent/CN204459324U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806797A (en) * | 2013-12-31 | 2015-07-29 | 新歌阀门有限公司 | Automatic flow control system and pilot valve assembly |
| CN104806797B (en) * | 2013-12-31 | 2018-02-23 | 缪勒Sv有限公司 | Automatic flow control system and guide valve component |
| CN105443844A (en) * | 2015-12-19 | 2016-03-30 | 无锡压缩机股份有限公司 | Vacuum regulating valve device used for vacuum displacement pump |
| US11526181B2 (en) | 2018-01-30 | 2022-12-13 | Illinois Tool Works Inc. | Mass flow controller with absolute and differential pressure transducer |
| TWI796417B (en) * | 2018-01-30 | 2023-03-21 | 美商伊利諾工具工程公司 | Mass flow controller with absolute and differential pressure transducer and its related method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806797B (en) | 2018-02-23 |
| CN104806797A (en) | 2015-07-29 |
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Effective date of registration: 20170519 Address after: British Columbia Patentee after: Mueller SV Ltd. Address before: British Columbia Patentee before: New valve Ltd. Effective date of registration: 20170519 Address after: British Columbia Patentee after: New valve Ltd. Address before: 12850, 87 street, Surrey, British Columbia, Canada Patentee before: SINGER VALVE Inc. |
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Granted publication date: 20150708 Effective date of abandoning: 20180223 |
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Granted publication date: 20150708 Effective date of abandoning: 20180223 |
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