CN203082544U - Flammable and combustible gas delivery equipment - Google Patents
Flammable and combustible gas delivery equipment Download PDFInfo
- Publication number
- CN203082544U CN203082544U CN 201320045533 CN201320045533U CN203082544U CN 203082544 U CN203082544 U CN 203082544U CN 201320045533 CN201320045533 CN 201320045533 CN 201320045533 U CN201320045533 U CN 201320045533U CN 203082544 U CN203082544 U CN 203082544U
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- Prior art keywords
- rotary compressor
- flammable explosive
- conveying equipment
- explosive gas
- gas conveying
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Abstract
The utility model discloses flammable and combustible gas delivery equipment. The delivery equipment comprises a gas inlet pipeline, a liquid ring compressor, a motor, a connecting pipeline, a liquid separation tank and a cooler, and is characterized by further compriseing a liquid ring compressor frequency conversion control and cooling control system, wherein the frequency conversion control and cooling control system comprises a flow meter arranged on the gas inlet pipeline, a PID regulator, a signal distributor, a frequency converter, a valve positioning device and an automatic control valve. According to the gas delivery equipment, output of the frequency converter can be automatically regulated according to detected gas flow, and automatic regulation of gas inlet flow is achieved; and meanwhile, automatic regulation can be carried out on the amount of cooling water, precise regulation is achieved, and at the same time operation expenses are reduced.
Description
Technical field
The utility model relates to a kind of flammable explosive gas conveying equipment, especially a kind of by frequency variator adjusting pendular ring compressor operating frequency, and make liquid rotary compressor cooling by synchronization regulation cooling water inlet, the conveying equipment that can pressurize and carry for flammable explosive gas.
Background technique
Liquid rotary compressor is a kind of compression device that can be used for compressing flammable explosive gas, because it has simple in structure, easy to manufacture, easy and simple to handle, few easy workout part, the pulsating nature of exhaust and noise are all less, advantages such as delivery temperature is lower are widely used at petrochemical industry.
Liquid rotary compressor when work, blade agitated liquid and the energy loss that causes is very big, even be higher than the energy consumption that makes gas compression, so the common power of liquid rotary compressor is very big.
In liquid rotary compressor is used, using greatly is that the gas in the upstream equipment is collected, compressed and carries, so, relatively stricter for the requirement of inlet flow rate, the too big upstream equipment that may cause of flow is found time, and the too little upstream equipment that may cause of flow builds the pressure.For making the suction port of compressor constant flow, regulate flow by regulating the inlet valve aperture mostly, can cause efficient further to reduce like this.And liquid rotary compressor is stronger for the dependence of cooling system, and a large amount of used heat that need in time will produce are taken away, so that equipment runs well.Common cooling system does not have control device, can only lean on operator manually to grope the valve opening of cooling water or directly valve is reached maximum, opens the untimely generation temperature anomaly of valve because of cooling water easily like this, or causes the waste of cooling water because of valve opening is excessive.
In the present industrial processes, most of liquid rotary compressor only uses as a kind of gas compressing equipment of power invariability merely, though have part liquid rotary compressor seldom to dispose operate power when frequency variator reduces low discharge, also do not have the application example of synchronous change cooling water amount.
Summary of the invention
At deficiency of the prior art, the purpose of this utility model provides a kind of improved flammable explosive gas conveying equipment.
The technical solution of the utility model is:
A kind of flammable explosive gas conveying equipment, comprise admission line, liquid rotary compressor, motor, connecting line, branch flow container, working solution cooler and working solution reflux pipeline, wherein admission line is provided with flowmeter, the two ends of connecting line connect liquid rotary compressor respectively and divide flow container, working solution reflux pipeline one end is connected with dividing flow container, the other end is connected with liquid rotary compressor, and the working solution cooler is arranged on the working solution reflux pipeline; It is characterized in that, described gas transportation facilities also comprises liquid rotary compressor VFC and cooling control system, and described VFC and cooling control system comprise flowmeter, PID regulator, signal distributor, frequency variator, valve positioner and the autocontrol valve that is arranged on the admission line.
In the gas transportation facilities of the present utility model, described flowmeter is installed on the admission line of liquid rotary compressor, this flowmeter can be measured the gas flow that enters liquid rotary compressor under normal pressure or negative pressure operating mode, and signal is transferred to the PID regulator, as the measured value of adjustment process.Described flowmeter can satisfy the gas flowmeter of usage requirement for vortex-shedding meter, thermal mass flow meter or other.
Described liquid rotary compressor is related domain gas delivery compressor commonly used, by motor driving.Liquid rotary compressor generally includes cylinder and compressor impeller.
Described signal distributor is the distributor that goes out into two.Be the input signal distributor be the signal that records and regulate output by flowmeter through PID.After input signal distributes through signal distributor, the output two paths of signals, one road input converter is used to regulate the rotating speed of compressor impeller, realizes the adjusting of gas flow; Another road is the transfer valve door holder then, output signal, thus the autocontrol valve that is provided with on the control cooling water pipeline changes aperture, regulates the cooling water flow that enters heat exchanger, thus realize automatic adjusting to the liquid rotary compressor operating temperature.
Described valve positioner is installed on the control valve as the annex of autocontrol valve, accepts the control signal of regulator output, changes the aperture of autocontrol valve in view of the above, can improve the accuracy and the receptance of valve location, improves the dynamic characteristic of control loop.
In the gas transportation facilities of the present utility model, described PID regulator, signal distributor and frequency variator can be arranged in the control box usually.
Described frequency variator is installed in the control box, according to the output value of the signal change frequency of regulator output, adjusts the motor revolution of liquid rotary compressor, and then changes the flow that gas enters liquid rotary compressor.
Described regulator is mounted in the control box, is a PID regulator, can change output value by the deviation of measured value and setting value, makes corresponding process parameter to the adjustment of setting value direction.In this scheme, the signal of regulator can be controlled frequency variator and autocontrol valve simultaneously, realizes two final controlling element synchronization regulation, both can realize the purpose of control flow rate, again can synchronization control enters the cooling water inflow of liquid rotary compressor.
Described signal distributor is installed in the control box, and effect is that the road signal that regulator is exported is transferred to frequency variator and autocontrol valve simultaneously.
The utility model has adopted above technological scheme, thereby has the following advantages:
The utility model can pressurize and carries at flammable explosive gas.Flow for the liquid rotary compressor admission line detects, and it is timely to obtain data; Carry out VFC for the motor revolution, saved operation energy consumption; Consumption for cooling water is regulated, and has reduced operating cost when accurately regulating, and is a kind of comparatively ideal flammable explosive gas conveying equipment.
Description of drawings
Fig. 1 is the structural representation of a kind of flammable explosive gas conveying equipment of the utility model.
Among the figure: the 1-admission line; The 2-liquid rotary compressor; The 3-motor; The 4-one-way valve; The 5-connecting line; 6-divides flow container; The 7-export pipeline; The 8-supplying tube; The 9-expulsion valve; The 10-reflux pipeline; The 11-cooler; The 12-cooling water pipeline; The 13-autocontrol valve; The 14-control box; The 15-filter; 16-air inlet by-pass line; The 17-safety valve; The 18-one-way valve; The 19-liquid level indicator; The FT-flowmeter; The FI-PID regulator; The FB-signal distributor; The FY-1-frequency variator; The FY-2-valve positioner.
Embodiment
Below in conjunction with accompanying drawing flammable explosive gas conveying equipment of the present utility model is described in detail.
As shown in Figure 1: a kind of flammable explosive gas conveying equipment comprises admission line 1, liquid rotary compressor 2, motor 3, connecting line 5, divides flow container 6, export pipeline 7, reflux pipeline 10, cooler 11.Wherein admission line 1 is provided with one-way valve 4, in case the gas in the liquid-stopping ring compressor returns through admission line 1.Liquid rotary compressor 2 is driven by motor 3.
The working principle of flammable explosive gas conveying equipment of the present utility model is as follows:
Gas to be compressed is imported liquid rotary compressor 2 via admission line 1.For preventing that any gas from flowing back to from liquid rotary compressor 2 via admission line 1, admission line 1 is equipped with one-way valve 4.The gas of input is compressed in liquid rotary compressor 2.For this reason, be installed in the liquid rotary compressor 2 impeller is centrifugal, by motor 3 drives impeller.Working liquid body is present in the liquid rotary compressor 2 and because the centrifugal force that the impeller rotation produces makes it flow against compressor body.This just is attached in compressor body and has formed pendular ring in the cylinder surfaces.Even the consumption of selecting working liquid body is so that when pendular ring formed, the end that is installed in the blade on the impeller also was immersed in the liquid.Like this, in liquid rotary compressor 2, form the crescent moon chamber that limits by two blades and working liquid body in each case.Owing to, in the crescent moon chamber, produce pressure below atmospheric pressure and this pressure are attracted to gas liquid rotary compressor 2 via feeding line 1 suction side to the liquid of outflow and because the rotation that the centrifugal installation of impeller produces causes the size of single month teeth cavity from the pressure side increasing to suction side.The volume that impeller centrifugal installation in liquid rotary compressor 2 causes single chamber in rotation from suction side on the pressure side reducing.Gas is compressed in the chamber in the impeller rotary course.Pressurized gas is transferred in the branch flow container 6 via connecting line 5.Divide flow container 6 to be used as the storage container of working liquid body simultaneously.In minute flow container 6, the working liquid body that is entrained in the gas is separated.The pressurized gas of removing working liquid body is taken out via export pipeline 7.Wherein divide flow container 6 that supplying tube 8 also is set, working liquid body can be introduced via this supplying tube and divide in the flow container 6.In addition, divide flow container 6 that safety valve 17 is housed, open when the pressure in minute flow container 6 surpasses this safety valve of prescribing a time limit on the operation pressure.Divide the consumption of working liquid body in the flow container 6 to monitor by liquid level indicator 19, unnecessary part working liquid body can be discharged from minute flow container 6 via expulsion valve 9.Working liquid body returns via reflux pipeline 10.Reflux pipeline 10 generally comprises two-way, and one the tunnel normally uses, and another road is standby.Filter 15 is housed on reflux pipeline 10, in filter, solid particle is separated from working liquid body.In addition, reflux pipeline 10 is provided with working solution cooler 11, and cooling water pipeline 12 is used for working liquid body is cooled to operating temperature by cooler 11.Cooling water pipeline 12 is provided with autocontrol valve 13.For preventing that gas from passing back in the branch flow container 6 via export pipeline 7, can be equipped with one-way valve 18 on the export pipeline 7 equally.
A flowmeter FT is set on the admission line 1, is used for detecting in real time the gas flow that enters liquid rotary compressor, and signal is imported among the PID regulator FI, air-breathing flow has been set by the operator in advance in regulator inside.Through calculating the deviation of checkout value and setting value, export regulated value to signal distributor FB, signal distributor copies as two-way with regulated value, and one tunnel output signal S1 is to frequency variator FY-1, and another road output signal S2 is to valve positioner FY-2.The signal that exports frequency variator to changes rotating speed of motor by the output of adjusting frequency variator FY-1, increases or reduces a speed and the volume that moon teeth cavity forms, and changes the amount that sucks gas, thereby realizes the automatic adjusting of charge flow rate.Simultaneously, export the aperture of the autocontrol valve 13 on the signal change cooling water pipeline of valve positioner FY-2 to, increase or reduce to enter the cooling water inflow of cooler, reach and make working solution regulate the purpose of temperature automatically.
In preferred embodiments, regulator FI, signal distributor FB and frequency variator FY-1 can pack in the control box 14 simultaneously, thereby realize integrated control.
Gas transportation facilities of the present utility model can pressurize and carries at flammable explosive gas.Except can detecting for the flow of liquid rotary compressor air inlet and regulate, can also carry out for the consumption of cooling water accurately regulating automatically, thereby can reduce operating cost, be a kind of comparatively ideal flammable explosive gas conveying equipment.
Claims (11)
1. flammable explosive gas conveying equipment, comprise admission line, liquid rotary compressor, motor, connecting line, branch flow container, working solution cooler and working solution reflux pipeline, wherein admission line is provided with flowmeter, the two ends of connecting line connect liquid rotary compressor respectively and divide flow container, working solution reflux pipeline one end is connected with dividing flow container, the other end is connected with liquid rotary compressor, and the working solution cooler is arranged on the working solution reflux pipeline; It is characterized in that, described gas transportation facilities also comprises liquid rotary compressor VFC and cooling control system, and described VFC and cooling control system comprise flowmeter, PID regulator, signal distributor, frequency variator, valve positioner and the autocontrol valve that is arranged on the admission line.
2. according to the described flammable explosive gas conveying equipment of claim 1, it is characterized in that described flowmeter can be vortex-shedding meter or thermal mass flow meter.
3. according to the described flammable explosive gas conveying equipment of claim 1, it is characterized in that described signal distributor is the distributor that goes out into two.
4. according to the described flammable explosive gas conveying equipment of claim 3, it is characterized in that, the input signal distributor be to record and through the signal of PID regulator output by flowmeter, output signal one road input converter is used to regulate the rotating speed of compressor impeller; Another road is the transfer valve door holder then, output signal, thus the autocontrol valve that is provided with on the control cooling water pipeline changes aperture.
5. according to the described flammable explosive gas conveying equipment of claim 1, it is characterized in that described PID regulator, signal distributor and frequency variator are arranged in the control box.
6. according to claim 1 or 5 described flammable explosive gas conveying equipments, it is characterized in that, described frequency variator is adjusted the motor revolution of liquid rotary compressor according to the output value of the signal change frequency of regulator output, and then changes the flow that gas enters liquid rotary compressor.
7. according to the described flammable explosive gas conveying equipment of claim 1, it is characterized in that described admission line is provided with one-way valve, flow back to from liquid rotary compressor via admission line to prevent any gas.
8. according to the described flammable explosive gas conveying equipment of claim 1, it is characterized in that flow container was provided with export pipeline in described minute.
9. according to the described flammable explosive gas conveying equipment of claim 8, it is characterized in that described export pipeline is provided with one-way valve, pass back in the branch flow container through export pipeline to prevent gas.
10. according to the described flammable explosive gas conveying equipment of claim 1, it is characterized in that flow container was provided with supplying tube in described minute, via this supplying tube working liquid body is introduced and divided in the flow container.
11., it is characterized in that described separatory is canned a safety valve according to the described flammable explosive gas conveying equipment of claim 1, open when pressure in minute flow container surpasses on the operation pressure in limited time this safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045533 CN203082544U (en) | 2013-01-29 | 2013-01-29 | Flammable and combustible gas delivery equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045533 CN203082544U (en) | 2013-01-29 | 2013-01-29 | Flammable and combustible gas delivery equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082544U true CN203082544U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320045533 Expired - Lifetime CN203082544U (en) | 2013-01-29 | 2013-01-29 | Flammable and combustible gas delivery equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198636A (en) * | 2021-12-13 | 2022-03-18 | 上海氢枫能源技术有限公司 | Hydrogen filling system and method for automatic flow regulation of long pipe trailer |
| CN114437843A (en) * | 2020-11-03 | 2022-05-06 | 中国石油化工股份有限公司 | Control system and method for natural gas treatment process |
-
2013
- 2013-01-29 CN CN 201320045533 patent/CN203082544U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437843A (en) * | 2020-11-03 | 2022-05-06 | 中国石油化工股份有限公司 | Control system and method for natural gas treatment process |
| CN114437843B (en) * | 2020-11-03 | 2022-12-13 | 中国石油化工股份有限公司 | Control system and method for natural gas treatment process |
| CN114198636A (en) * | 2021-12-13 | 2022-03-18 | 上海氢枫能源技术有限公司 | Hydrogen filling system and method for automatic flow regulation of long pipe trailer |
| CN114198636B (en) * | 2021-12-13 | 2023-02-28 | 上海氢枫能源技术有限公司 | Hydrogen filling system and method for automatically adjusting flow of long pipe trailer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
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| CX01 | Expiry of patent term |