CN109237309A - For detecting the pressure drop rate detection device and detection method of booster detection device - Google Patents
For detecting the pressure drop rate detection device and detection method of booster detection device Download PDFInfo
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- CN109237309A CN109237309A CN201811343711.3A CN201811343711A CN109237309A CN 109237309 A CN109237309 A CN 109237309A CN 201811343711 A CN201811343711 A CN 201811343711A CN 109237309 A CN109237309 A CN 109237309A
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- control unit
- booster
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- 238000001514 detection method Methods 0.000 title claims abstract description 115
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 238000004088 simulation Methods 0.000 claims description 9
- 238000012797 qualification Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 230000006870 function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- CHQOEHPMXSHGCL-UHFFFAOYSA-N trimethaphan Chemical compound C12C[S+]3CCCC3C2N(CC=2C=CC=CC=2)C(=O)N1CC1=CC=CC=C1 CHQOEHPMXSHGCL-UHFFFAOYSA-N 0.000 description 1
- 229940035742 trimethaphan Drugs 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Examining Or Testing Airtightness (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to a kind of for detecting the pressure drop rate detection device and detection method of booster detection device；Including control unit, output unit, connecting tube, exhaust port and electromagnetic exhaust valve；One end of connecting tube is connect with exhaust port, and exhaust port is equipped with electromagnetic exhaust valve；The other end of connecting tube with the pressure guiding pipe of booster detection device for connecting；The connecting tube is equipped with ball valve；Electromagnetic exhaust valve is electrically connected with control unit, and the instruction of reception control unit is opened or closed；Described control unit is connect with booster detection device, and the close valve state signal for receiving booster detection device；The output unit receives close valve state signal for showing.The present invention controls deflation rate by control unit, effectively simulated leakage amount the pressure drop rate value of alert if just can be reached, to carry out accurate validity test to booster detection device, guarantee the validity of booster detection device, while also ensuring the safety of simulated experiment.
Description
Technical field
It is the present invention relates to booster detection device field, in particular to a kind of for detecting the pressure drop rate of booster detection device
Detection device and detection method.
Background technique
Booster detection device is mainly used for the real-time detection of pipeline pressure and pressure drop rate, to reach in emergency circumstances in time
Effectively close the important safety equipment of valve.Due to being related to the safety of gas pipeline under emergency, electronic device it is reliable
Property be particularly important, it is therefore desirable to ensure the booster detection device moment keep good working order, once special feelings occur
Condition can first time in fast and accurately judge be booster detection device top priority.
In order to guarantee the reliability of booster detection device, other than carrying out daily maintenance to it, it is also necessary to it
Function is tested comprehensively.Test content mainly tests whether it can work normally according to the state of setting: working as operator
When member carries out debugging and maintenance to it, simulation test can be carried out to its high pressure and low pressure turn-off function, the method for test is logical
It is often according to currently practical pressure value simulated high-pressure and low pressure shutdown setting value, artificial makes it trigger alert if, then etc.
Whether executed after delay time as defined in staying in and closes valve operation.
Since the detection method of pressure drop rate is to detect the variation of pressure value in certain time, it is therefore desirable to generate certain
The pressure reduction condition of slope.Often it is difficult that pressure drop rate function is simulated and tested at the scene, main cause is:
One, it generates pressure drop rate condition needs artificially to deflate to the pressure guiding pipe of force samples point, operating method only has
The ferrule fitting nut that connection pressure guiding pipe is slowly unclamped under with pressure condition, makes card of the natural gas of sequestering in pressure guiding pipe from release
Set leaks between gap, so as to cause the decline of pressure.Due to being band press operation, progress simulation test risk in this way is very big, separately
Outer constantly elastic cutting ferrule also be easy to cause the decline of cutting ferrule sealing performance.
Two, it since the pressure drop rate off value set is the minimum value reached, is generated by the method for artificially causing leakage
Pressure drop rate value be often far longer than setting value, be difficult to simulate the pressure drop rate value that leakage rate has just reached alert if,
Such as 0.10MPa/min.Therefore in actual maintenance operation, pressure drop rate test function is difficult accurately to be executed.
Summary of the invention
The first purpose of the invention is to provide a kind of for detecting the pressure drop rate detection device of booster detection device, should
Detection device can carry out the adjusting of pressure drop rate as needed, to carry out accurate effective test to keeping detection device.
Meanwhile the detection device can select detection pattern according to actual needs, to meet the detection to software and hardware.
Realizing the technical solution of first purpose of the invention is: for detecting the Trimetaphan of booster detection device in the present invention
Rate detection device includes control unit, output unit, connecting tube, exhaust port and electromagnetic exhaust valve；One end of connecting tube and row
The connection of gas port, exhaust port are equipped with electromagnetic exhaust valve；The other end of connecting tube is for the pressure guiding pipe with booster detection device
Connection；The connecting tube is equipped with ball valve；Electromagnetic exhaust valve is electrically connected with control unit, and the instruction of reception control unit carries out
It opens or closes；Described control unit is connect with booster detection device, and the close valve state letter for receiving booster detection device
Number；The output unit receives close valve state signal for showing.The output unit can be display or indicator light etc..
It further include input unit and pressure sensor as optimization；The input unit is connect with control unit, and is used for
Input pressure drop rate value electric signal；The pressure sensor setting is connect in connecting tube, and with control unit；The electromagnetism row
Air valve is that folding angle can be adjusted under control unit control；Whether the output unit is that can show pressure drop rate value and receive
To the display of close valve state signal.
It further include air accumulator as optimization；The air accumulator is connected to by pipeline with connecting tube.
As optimization, above-mentioned input unit is also used to input testing mode；Described control unit is also used to detect to booster
The electric signal of device transmission test pattern.
Above-mentioned control unit include memory, processor and storage on a memory and the journey that can run on a processor
Sequence；The processor performs the steps of when executing described program
By input unit input testing mode, the test pattern is that valve test is closed in practical pass valve test mode or simulation
The electric signal of the test pattern of input is sent to booster detection device by mode or setting stroke test mode, control unit, is controlled
Unit control electromagnetic exhaust valve processed opens corresponding angle according to the pressure drop rate value of input, after the delay time of setting, if
The close valve state signal from booster detection device is received, then in output unit real-time display close valve state；If not receiving
The close valve state signal of tube detection device is revealed, then shows failure in output unit.
Above-mentioned control unit is MUC.
Booster detection device is detected using above-mentioned pressure drop rate detection device a second object of the present invention is to provide a kind of
Detection method, this method can to the software and hardware of booster detection device carry out complete detection.
Realizing the technical solution of second purpose of the invention is: being detected in the present invention using above-mentioned pressure drop rate detection device
Detection method includes the following steps for booster detection device:
A, whether qualified by pressure sensor detection connection overpressure；
B, when detecting connection overpressure qualification, pressure guiding pipe air inlet is closed, opens ball valve；When detecting connecting tube pressure
When power is unqualified, air accumulator is opened for connecting tube ventilation, until connection overpressure is qualified；
C, pressure drop rate value is inputted using input unit, and practical pass valve test mode or simulation is selected to close valve test mode
Or setting stroke test mode；
D, control unit passes through the electric signal of the pressure drop rate value received and the electric signal of pressure sensor feedback,
Control the folding angle of electromagnetic exhaust valve；
E, when selection is practical closes valve test mode, the close valve state signal on output unit, and observation pipeline are observed
Whether node valve closes；If receiving close valve state signal at the appointed time, and pipeline node valve also realizes closing,
Then show that booster detection device is working properly on display, control unit controls electromagnetic exhaust valve and closes, and closes ball valve, connects
Pressure guiding pipe air inlet；If not receiving pass valve signal at the appointed time, booster detection device failure is shown on output unit；If
Do not find that pipeline node valve is closed at the appointed time, then the hardware of booster detection device is faulty；
When selection, which is simulated, closes valve test mode, the close valve state signal on output unit is observed；If at the appointed time
Close valve state signal is received, control unit controls electromagnetic exhaust valve and closes, and closes ball valve, connects pressure guiding pipe air inlet；If
Pass valve signal is not received in stipulated time, then shows booster detection device failure on output unit.
When selection sets stroke test mode, the close valve state signal on output unit, and observation pipe section are observed
Whether point valve is according to setting folding angle pass valve；If receiving close valve state signal at the appointed time, and in pipeline node
When receiving the releasing pass valve signal from booster detection device behind valve arrival setting closing angle position, then on output unit
Show that booster detection device is working properly, control unit controls electromagnetic exhaust valve and closes, and closes ball valve, connect pressure guiding pipe into
Gas；If not receiving pass valve signal at the appointed time, booster detection device failure is shown on output unit；If in regulation
It is interior to receive pass valve signal, but do not receive after pipeline node valve reaches setting closing angle position and detected from booster
When the signal of pipeline node valve is closed in the releasing of device, then booster detection device failure is shown on display.
The present invention has the effect of positive: (1) present invention can simulate gas pipeline gas leakage, thus do not influence it is normal defeated
Under the premise of gas operation, the detection to booster detection device is realized；
(2) present invention controls the pressure drop rate value that electromagnetic exhaust valve is set by control unit and is exhausted, and can have
Effect simulated leakage amount has just reached the pressure drop rate value of alert if, to carry out accurate validity survey to booster detection device
Examination, guarantees the validity of booster detection device, while also ensuring the safety of simulated experiment；
(3) present invention can provide enough gas when the gas pressure in connecting tube is inadequate by air accumulator, from
And meet detection demand；
(4) present invention needs to be provided with three kinds of detection patterns according to actually detected, and practical pass valve test test can be complete
Software and hardware, solenoid valve and the working condition of executing agency for detecting booster detection device, can directly react executing agency
Operate the ability of valve and the state of valve rod；Simulation closes valve test mode and is able to detect the software of electronic device and hard
Part state, but the working condition of solenoid valve and executing agency is not detected, it will not influence the working condition of valve；Set stroke test
Mode can complete detection electronic installation software and hardware, solenoid valve and the working condition of executing agency and close completely
The problem of valve closing door is brought.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is module connection diagram in the present invention.
Specific embodiment
See Fig. 1 and Fig. 2, the present invention is used to detect the pressure drop rate detection device of booster detection device；Including control unit
1, output unit 2, connecting tube 3, exhaust port 4 and electromagnetic exhaust valve 5；One end of connecting tube 3 is connect with exhaust port 4, exhaust
Port 4 is equipped with electromagnetic exhaust valve 5；The other end of connecting tube 3 with the pressure guiding pipe of booster detection device 9 for connecting；The company
Adapter tube 3 is equipped with ball valve；Electromagnetic exhaust valve 5 is electrically connected with control unit 1, and the instruction of reception control unit 1 carry out open or
It closes；Described control unit 1 is connect with booster detection device 9, and the close valve state signal for receiving booster detection device 9；
The output unit 2 receives close valve state signal for showing.
It further include simultaneously input unit 6 and pressure sensor 7；The input unit 6 is connect with control unit 1, and is used for
Input the electric signal of pressure drop rate value；The setting of pressure sensor 7 is connect in connecting tube 3, and with control unit 1；It is described
Electromagnetic exhaust valve 5 is that folding angle can be adjusted under the control of control unit 1；The output unit 2 is that can show pressure drop rate value
Whether the display of close valve state signal is received.
It further include simultaneously air accumulator 8；The air accumulator 8 is connected to by pipeline with connecting tube 3.
Above-mentioned input unit 6 is also used to input testing mode；Described control unit 1 is also used to send out to booster detection device 9
Send the electric signal of test pattern.
Above-mentioned control unit 1 is including memory, processor and stores the journey that can be run on a memory and on a processor
Sequence；The processor performs the steps of when executing described program
By 6 input testing mode of input unit, the test pattern is that practical pass valve test mode or simulation pass valve are surveyed
The electric signal of the test pattern of input is sent to booster detection device by die trial formula or setting stroke test mode, control unit 1
9, control unit 1 controls electromagnetic exhaust valve 5 and opens corresponding angle according to the pressure drop rate value of input, in the delay time of setting
Afterwards, if receiving the close valve state signal from booster detection device 9, in 2 real-time display close valve state of output unit；If not
The close valve state signal of self-destruction tube detection device 9 is received, then shows failure in output unit 2.
Above-mentioned control unit 1 is MUC.
The present invention detects the detection method of booster detection device, including following step using above-mentioned pressure drop rate detection device
It is rapid:
A, whether qualified by pressure in the detection connecting tube 3 of pressure sensor 7；
B, when detecting pressure qualification in connecting tube 3, pressure guiding pipe air inlet is closed, opens ball valve；When detecting connecting tube 3
When pressure is unqualified, air accumulator 8 is opened for the ventilation of connecting tube 3, until pressure is qualified in connecting tube 3；
C, pressure drop rate value is inputted using input unit 6, and practical pass valve test mode or simulation is selected to close valve test mould
Formula or setting stroke test mode；
D, the telecommunications that control unit 1 passes through the electric signal of the pressure drop rate value received and pressure sensor 7 is fed back
Number, control the folding angle of electromagnetic exhaust valve 5；
E, when selection is practical closes valve test mode, the close valve state signal on display, and observation pipe section are observed
Whether point valve closes；If receiving close valve state signal at the appointed time, and pipeline node valve also realizes closing, then
Show that booster detection device is working properly on display, control unit 1 controls electromagnetic exhaust valve 5 and closes, and closes ball valve, connects
Pressure guiding pipe air inlet；If not receiving pass valve signal at the appointed time, booster detection device failure is shown on display；If
Do not find that pipeline node valve is closed in stipulated time, then the hardware of booster detection device 9 is faulty；
When selection, which is simulated, closes valve test mode, the close valve state signal on display is observed；If connecing at the appointed time
Close valve state signal is received, control unit 1 controls electromagnetic exhaust valve 5 and closes, and closes ball valve, connects pressure guiding pipe air inlet；If
Pass valve signal is not received in stipulated time, then shows booster detection device failure on display.
When selection sets stroke test mode, the close valve state signal on display, and observation pipeline node are observed
Whether valve is according to setting folding angle pass valve；If receiving close valve state signal at the appointed time, and in pipeline node valve
When receiving the releasing pass valve signal from booster detection device 9 behind door arrival setting closing angle position, then shown on display
Show that booster detection device is working properly, control unit 1 controls electromagnetic exhaust valve 5 and closes, and closes ball valve, connect pressure guiding pipe into
Gas；If not receiving pass valve signal at the appointed time, booster detection device failure is shown on display；If in the stipulated time
Pass valve signal is inside received, but does not receive to detect from booster after pipeline node valve reaches setting closing angle position and fill
When setting 9 signal of releasing closing pipeline node valve, then booster detection device failure is shown on display.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. a kind of for detecting the pressure drop rate detection device of booster detection device；It is characterized by comprising control unit (1),
Output unit (2), connecting tube (3), exhaust port (4) and electromagnetic exhaust valve (5)；One end and exhaust port (4) of connecting tube (3)
Connection, exhaust port (4) are equipped with electromagnetic exhaust valve (5)；The other end of connecting tube (3) is used for and booster detection device (9)
Pressure guiding pipe connection；The connecting tube (3) is equipped with ball valve；Electromagnetic exhaust valve (5) is electrically connected with control unit (1), and receives control
The instruction of unit (1) processed is opened or closed；Described control unit (1) is connect with booster detection device (9), and for receiving
The close valve state signal of booster detection device (9)；The output unit (2) receives close valve state signal for showing.
2. according to claim 1 for detecting the pressure drop rate detection device of booster detection device, it is characterised in that: also
Including input unit (6) and pressure sensor (7)；The input unit (6) connect with control unit (1), and for inputting pressure
The electric signal of rate value drops；Pressure sensor (7) setting is connect in connecting tube (3) with control unit (1)；It is described
Electromagnetic exhaust valve (5) is that folding angle can be adjusted in the case where control unit (1) controls；The output unit (2) is that can show pressure drop
Rate value and the display for whether receiving close valve state signal.
3. according to claim 2 for detecting the pressure drop rate detection device of booster detection device, it is characterised in that: also
Including air accumulator (8)；The air accumulator (8) is connected to by pipeline with connecting tube (3).
4. according to claim 3 for detecting the pressure drop rate detection device of booster detection device, it is characterised in that: institute
It states input unit (6) and is also used to input testing mode；Described control unit (1) is also used to send to booster detection device (9) and survey
The electric signal of die trial formula.
5. according to claim 4 for detecting the pressure drop rate detection device of booster detection device, it is characterised in that: institute
State control unit (1) include memory, processor and storage on a memory and the program that can run on a processor；The place
Reason device performs the steps of when executing described program
By input unit (6) input testing mode, the test pattern is that valve test is closed in practical pass valve test mode or simulation
The electric signal of the test pattern of input is sent to booster detection device by mode or setting stroke test mode, control unit (1)
(9), control unit (1) control electromagnetic exhaust valve (5) opens corresponding angle according to the pressure drop rate value of input, in prolonging for setting
When the time after, if receiving the close valve state signal from booster detection device (9), output unit (2) real-time display close
Valve state；If not receiving the close valve state signal of self-destruction tube detection device (9), failure is shown in output unit (2).
6. to 5, one of them is described for detecting pressure drop rate detection devices of booster detection device according to claim 1,
Be characterized in that: described control unit (1) is MUC.
7. a kind of detection method using the detection booster detection device of pressure drop rate detection device described in claim 3, feature
Be the following steps are included:
A, whether qualified by pressure sensor (7) detection connecting tube (3) interior pressure；
B, when detecting the interior pressure qualification of connecting tube (3), pressure guiding pipe air inlet is closed, opens ball valve；When detecting connecting tube (3)
When pressure is unqualified, air accumulator (8) are opened for connecting tube (3) ventilation, until connecting tube (3) interior pressure is qualified；
C, pressure drop rate value is inputted using input unit (6)；
D, control unit (1) passes through the electric signal of the pressure drop rate value received and the telecommunications of pressure sensor (7) feedback
Number, control the folding angle of electromagnetic exhaust valve (5)；
E, whether shown in observation output unit (2) and receive the close valve state signal from booster detection device (9)；If advising
Close valve state signal is received in fixing time, control unit (1) controls electromagnetic exhaust valve (5) and closes, and closes ball valve, and connection is drawn
Pressure pipe air inlet；If not receiving pass valve signal at the appointed time, booster detection device failure is shown on output unit (2).
8. a kind of detection method using the detection booster detection device of pressure drop rate detection device described in claim 5, feature
Be the following steps are included:
A, whether qualified by pressure sensor (7) detection connecting tube (3) interior pressure；
B, when detecting the interior pressure qualification of connecting tube (3), pressure guiding pipe air inlet is closed, opens ball valve；When detecting connecting tube (3)
When pressure is unqualified, air accumulator (8) are opened for connecting tube (3) ventilation, until connecting tube (3) interior pressure is qualified；
C, pressure drop rate value is inputted using input unit (6), and practical pass valve test mode or simulation is selected to close valve test mode
Or setting stroke test mode；
D, control unit (1) passes through the electric signal of the pressure drop rate value received and the telecommunications of pressure sensor (7) feedback
Number, control the folding angle of electromagnetic exhaust valve (5)；
E, when selection is practical closes valve test mode, the close valve state signal on output unit (2), and observation pipe section are observed
Whether point valve closes；
Close valve state signal when selection, which is simulated, closes valve test mode, in observation output unit (3)；
When selection sets stroke test mode, the close valve state signal on output unit (3), and observation pipeline node are observed
Whether valve carries out pass valve, and releases when turning to setting folding angle and close valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343711.3A CN109237309B (en) | 2018-11-13 | 2018-11-13 | Pressure drop rate detection device and detection method for detecting pipe explosion detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343711.3A CN109237309B (en) | 2018-11-13 | 2018-11-13 | Pressure drop rate detection device and detection method for detecting pipe explosion detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237309A true CN109237309A (en) | 2019-01-18 |
| CN109237309B CN109237309B (en) | 2024-09-13 |
Family
ID=65078363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811343711.3A Active CN109237309B (en) | 2018-11-13 | 2018-11-13 | Pressure drop rate detection device and detection method for detecting pipe explosion detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109237309B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664285A (en) * | 2020-06-04 | 2020-09-15 | 江苏兰格特自动化设备有限公司 | Stop valve auxiliary turn-off device and method based on network control |
| CN112214904A (en) * | 2020-10-20 | 2021-01-12 | 西南石油大学 | Valve chamber pressure drop rate calculation method under suction condition of gas pipeline compressor |
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| CN209130527U (en) * | 2018-11-13 | 2019-07-19 | 江苏兰格特自动化设备有限公司 | For detecting the pressure drop rate detection device of booster detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111664285A (en) * | 2020-06-04 | 2020-09-15 | 江苏兰格特自动化设备有限公司 | Stop valve auxiliary turn-off device and method based on network control |
| CN111664285B (en) * | 2020-06-04 | 2022-03-15 | 江苏兰格特自动化设备有限公司 | Stop valve auxiliary turn-off device and method based on network control |
| CN112214904A (en) * | 2020-10-20 | 2021-01-12 | 西南石油大学 | Valve chamber pressure drop rate calculation method under suction condition of gas pipeline compressor |
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| Publication number | Publication date |
|---|---|
| CN109237309B (en) | 2024-09-13 |
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