CN103644326B - A kind of two benches buffering type water hammer-resistant coaxial valve - Google Patents
A kind of two benches buffering type water hammer-resistant coaxial valve Download PDFInfo
- Publication number
- CN103644326B CN103644326B CN201310604145.8A CN201310604145A CN103644326B CN 103644326 B CN103644326 B CN 103644326B CN 201310604145 A CN201310604145 A CN 201310604145A CN 103644326 B CN103644326 B CN 103644326B
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- China
- Prior art keywords
- cylinder
- spool
- pilot valve
- chamber
- piston
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 230000003139 buffering effect Effects 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 abstract description 14
- 230000035939 shock Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
- F16K31/1245—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated with more than one valve
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a kind of two benches buffering type water hammer-resistant coaxial valve, left lining is established between left end cap and left cylinder, middle cylinder cap is established between left cylinder and right cylinder body, right lining is established between right cylinder cap and right cylinder body, left lining, embedding sealing circle inside right lining, the in-built left piston that can be free to slide of left cylinder, left piston is divided into two-part left cylinder inner chamber, left chamber one and right chamber one, the through left cylinder of spool and right cylinder body, spool and right cylinder piston are integrated design, right inner chamber of cylinder block is divided into two-part by right cylinder piston, left chamber two and right chamber two, left cylinder and right cylinder body side set up 2 inlet holes separately, adopt outside left cylinder and be screwed pilot valve, adopt outside right cylinder body and be screwed pilot valve, pilot valve is provided with gas control mouth.Beneficial effect of the present invention: different air inlet order, the action of control piston, thus realize the two stage action of spool, avoid spool wink to open, when closing in wink fluid column cause make shock up, fundamentally eliminate and make water hammer up.
Description
Technical field
The present invention relates to valve body technical field, be specifically related to a kind of two benches buffering type water hammer-resistant coaxial valve instrument.
Background technique
Coaxial valve is a kind of stop valve of fluid Control Engineering, applies very extensive.The mode that it adopts fluid course coaxial with pipeline, at utmost reduces the pressure loss, reduces resistance.Tradition stop valve spool closing velocity is very fast, and generally, stop valve is arranged on the pipeline of pump discharge end connection, and close to pump discharge end, when stop valve is closed rapidly, the unexpected change of pressure directly may damage pump.Current pipe-line system uses maximum stop valve to be generally ball valve, angle pedestal valve.When valve is closed at short notice, water hammer will occur in pipeline, water soot blower acts directly on stop valve, can cause the damage of valve time serious.Water hammer accident and stop valve lost efficacy and were usually coupled.The too fast keying of stop valve can cause water hammer to destroy stop valve, thus causes chain reaction in pipeline, and more fluidic component (comprising other control valves) is impaired, and accident is upgraded; No matter this vicious circle starts in which link, and its result is all serious.
Existing stop valve, no matter be ball, angle A seating, or tiltedly dish-style stop valve, they have a common feature when opening and closing, namely open or closing process in, spool is in accelerating process all the time, excessive velocities before spool is stopped, the immediate cause that Here it is causes stop valve water hammer and flap to clash into.In order to solve stop valve water hammer and flap Impact Problems, there is several solution, one be transformation of facility scheme such as: air pressure container, unidirectional extra feed tank, surge tower, air valve etc., these transformation advantages be utilize additional structure to occur at any time pressure surge is all inhaled in time, shortcoming is taken up an area greatly, complex structure, maintenance cost is high.One be Plant reconstruction plant modernization scheme such as: quiet stop valve, the stop valve that liquidates, water hammer-resistant ball check valve etc.The reason that quiet stop valve closedown sound is little is that the move distance of valve plate is short, but can not eliminate water hammer; In fact opposite-flushing type stop valve belongs to waterpower damped type stop valve; Ball check valve water hammer-resistant effect is better, but structure is too complicated, and sealing surface is too much, and manufacturing expense is high.
Summary of the invention
The object of the invention is to the defect for prior art and deficiency, a kind of two benches buffering type water hammer-resistant coaxial valve instrument is provided.
For achieving the above object, the technical solution used in the present invention is:
A kind of two benches buffering type water hammer-resistant coaxial valve of the present invention, left lining is established between left cylinder cap and left cylinder, middle cylinder cap is established between left cylinder and right cylinder body, right lining is established between right cylinder cap and right cylinder body, left lining, embedding sealing circle inside right lining, the in-built left piston that can be free to slide of left cylinder, left piston is divided into two-part left cylinder inner chamber, left chamber one and right chamber one, the through left cylinder of spool and right cylinder body, spool and right cylinder piston are integrated design, right inner chamber of cylinder block is divided into two-part by right cylinder piston, left chamber two and right chamber two, left cylinder and right cylinder body side set up 2 inlet holes separately, adopt outside left cylinder and be screwed pilot valve, adopt outside right cylinder body and be screwed pilot valve, pilot valve one, pilot valve two is provided with gas control mouth, connect external control gas.
As preferably, the air outlet hole corresponding inlet hole respectively of described pilot valve.
As preferably, described spool is built in cylinder body, and pipeline and fluid course are at coaxial line.
As preferably, be provided with sealing seat in described right cylinder cap, sealing seat is provided with sealing gasket, and spool right side contacts completely with sealing gasket.
As preferably, described pilot valve exhaust place is provided with throttling muffler.
After adopting said structure, beneficial effect of the present invention is: two benches buffering type water hammer-resistant coaxial valve, according to different air inlets order, the action of control piston, thus realize the two stage action of spool, avoid spool wink to open, wink close time fluid column cause make shock up, fundamentally eliminate make water hammer up.
Accompanying drawing explanation
In order to be illustrated more clearly in technological scheme of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention.
In figure: 1, spool, 2, left cylinder cap, 3, left lining, 4, left block, 5, left cylinder, 6, left piston, 7-1, pilot valve one, 7-2, pilot valve two, 8, right block, 9, middle cylinder cap, 10, right cylinder body, 11, right lining, 12, right cylinder cap, 13, sealing gasket, 14, sealing seat, 15, inlet hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, a kind of two benches buffering type water hammer-resistant coaxial valve, left lining 3 is established between left cylinder cap 2 and left cylinder 5, middle cylinder cap 9 is established between left cylinder 5 and right cylinder body 10, right lining 11 is established between right cylinder cap 12 and right cylinder body 10, left lining 3, embedding sealing circle inside right lining 11, the in-built left piston 6 that can be free to slide of left cylinder 5, left piston 6 is divided into two-part left cylinder 5 inner chamber, left chamber and right chamber, the through left cylinder of spool 15 and right cylinder body 10, spool 1 and right cylinder piston are integrated design, right cylinder body 10 inner chamber is divided into two-part by right cylinder piston, left chamber and right chamber, left cylinder 5 and right cylinder body 10 side set up 2 inlet holes separately, adopt outside left cylinder and be screwed pilot valve one 7-1, adopt outside right cylinder body and be screwed pilot valve two 7-2, pilot valve one 7-1, pilot valve two 7-2 is provided with gas control mouth, connect external control gas.
Closing process: initial spool is in enable possition, fluid enters valve body by the import of left cylinder cap 2, sealing seat 14 is flowed into through spool 1 inside, right cylinder cap 12 is flowed out through sealing seat 14 through flow hole, pilot valve one 7-1, pilot valve two 7-2 connects external control gas respectively, pilot valve one 7-1 gas control pressure must be greater than pilot valve two 7-2 gas control pressure, meanwhile, left cylinder 5 right chamber air inlet, left piston 6 slides left, right cylinder body 10 left chamber air inlet, spool 1 drives the action to the right together of left block 4, when contact left piston 6 left side, left block 4 right side, spool 1 action stops, right block 8 plays position-limiting action, main valve realizes first stage closedown, distance between spool right-hand member end face and sealing gasket reduces, rate of flow of fluid reduces, reduced by the fluid flow in runner, pilot valve one 7-1 obtains electric commutation, left cylinder 5 left chamber air inlet, and left piston 6 slides to the right, to contact, cylinder cap 9 left side stops, and spool 1 continues action to the right, to spool 1 right side press seal pad 13, fluid is enclosed in spool 1, realizes main valve second stage and closes.
Opening process: connect above-mentioned condition, pilot valve one 7-1 obtains electric commutation, left piston 6 action left, left piston 6 drives the action left of left block 3, spool 1 and its action left simultaneously, contact left lining 3 right side to left piston 6 to stop, spool realizes first stage unlatching, the fluid be enclosed in spool 1 flows out right cylinder cap 12 by sealing seat through flow hole, pilot valve two 7-2 obtains electric commutation, right cylinder body 10 right chamber air inlet, promote spool 1 and continue action left, to the contact of right piston left side, cylinder cap 9 right side stops, spool 1 is opened completely, spool 1 inner fluid full flow flows out valve body by seal face.Continuation action completes opening and closing circulation, and the present invention, by controlling the stage action of spool, carrys out control flow check rate of flow of fluid, and when suppression is opened in spool wink or wink closes, current are overrun, and prevent water column from making shock up, fundamentally eliminates and makes water hammer up.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (5)
1. a two benches buffering type water hammer-resistant coaxial valve, it is characterized in that: between left cylinder cap (2) and left cylinder (5), establish left lining (3), middle cylinder cap (9) is established between left cylinder (5) and right cylinder body (10), right lining (11) is established between right cylinder cap (12) and right cylinder body (10), left lining (3), right lining (11) inner side embedding sealing circle, the in-built left piston (6) that can be free to slide of left cylinder (5), left piston (6) is divided into two-part left cylinder (5) inner chamber, left chamber one and right chamber one, spool (1) through left cylinder (5) and right cylinder body (10), spool (1) and right cylinder piston are integrated design, right cylinder body (10) inner chamber is divided into two-part by right cylinder piston, left chamber two and right chamber two, left cylinder (5) and right cylinder body (10) side set up 2 inlet holes (15) separately, left cylinder (5) outside is adopted and is screwed pilot valve one (7-1), right cylinder body (10) outside is adopted and is screwed pilot valve two (7-2), pilot valve one (7-1), pilot valve two (7-2) is provided with gas control mouth, connect external control gas.
2. a kind of two benches buffering type water hammer-resistant coaxial valve according to claim 1, is characterized in that: the air outlet hole corresponding inlet hole (15) respectively of described pilot valve one (7-1), pilot valve two (7-2).
3. a kind of two benches buffering type water hammer-resistant coaxial valve according to claim 1, is characterized in that: described spool (1) is built in cylinder body, and pipeline and fluid course are at coaxial line.
4. a kind of two benches buffering type water hammer-resistant coaxial valve according to claim 1, it is characterized in that: in described right cylinder cap (12), be provided with sealing seat (14), sealing seat (14) is provided with sealing gasket (13), and spool (1) right side contacts completely with sealing gasket (13).
5. a kind of two benches buffering type water hammer-resistant coaxial valve according to claim 2, is characterized in that: described pilot valve one (7-1), pilot valve two (7-2) exhaust place are provided with throttling muffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604145.8A CN103644326B (en) | 2013-11-25 | 2013-11-25 | A kind of two benches buffering type water hammer-resistant coaxial valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604145.8A CN103644326B (en) | 2013-11-25 | 2013-11-25 | A kind of two benches buffering type water hammer-resistant coaxial valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103644326A CN103644326A (en) | 2014-03-19 |
| CN103644326B true CN103644326B (en) | 2015-12-02 |
Family
ID=50249587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310604145.8A Active CN103644326B (en) | 2013-11-25 | 2013-11-25 | A kind of two benches buffering type water hammer-resistant coaxial valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103644326B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163104A (en) * | 2018-10-30 | 2019-01-08 | 大连元利流体技术有限公司 | Saturated vapor valve |
| US10900585B2 (en) * | 2019-02-18 | 2021-01-26 | Automatic Switch Company | Coaxial valves |
| CN113833903B (en) * | 2020-06-08 | 2025-05-23 | 路达(厦门)工业有限公司 | Water hammer proof solenoid valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901253A1 (en) * | 1999-01-15 | 2000-07-20 | Aws Apparatebau Arnold Gmbh | Coaxial valve with housing body and extruded section, has few parts and simple construction |
| EP1408262A1 (en) * | 2002-10-09 | 2004-04-14 | müller co-ax ag | Coaxial valve with damper |
| DE10247098A1 (en) * | 2002-10-09 | 2004-04-22 | müller co-ax ag | Control tube for coaxial valve is made in one piece with valve body, which is conical and is narrower at its base than tube |
| CN202501078U (en) * | 2012-03-08 | 2012-10-24 | 大连元利流体技术有限公司 | Pneumatic coaxial valve |
| CN202561124U (en) * | 2012-05-23 | 2012-11-28 | 广东省肇庆方大气动有限公司 | Dual pilot-type electric control reversing valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19960330C2 (en) * | 1999-12-15 | 2003-08-21 | Astrium Gmbh | Coaxial valve with electric actuator |
| DE102005028584B4 (en) * | 2005-06-21 | 2008-03-27 | Eads Space Transportation Gmbh | coaxial valve |
| DE102007037995B4 (en) * | 2007-08-10 | 2013-05-08 | Astrium Gmbh | Coaxial valve with an electric drive |
-
2013
- 2013-11-25 CN CN201310604145.8A patent/CN103644326B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901253A1 (en) * | 1999-01-15 | 2000-07-20 | Aws Apparatebau Arnold Gmbh | Coaxial valve with housing body and extruded section, has few parts and simple construction |
| EP1408262A1 (en) * | 2002-10-09 | 2004-04-14 | müller co-ax ag | Coaxial valve with damper |
| DE10247098A1 (en) * | 2002-10-09 | 2004-04-22 | müller co-ax ag | Control tube for coaxial valve is made in one piece with valve body, which is conical and is narrower at its base than tube |
| CN202501078U (en) * | 2012-03-08 | 2012-10-24 | 大连元利流体技术有限公司 | Pneumatic coaxial valve |
| CN202561124U (en) * | 2012-05-23 | 2012-11-28 | 广东省肇庆方大气动有限公司 | Dual pilot-type electric control reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103644326A (en) | 2014-03-19 |
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