CN114441162A - Performance calibration equipment of pressure relief valve - Google Patents
Performance calibration equipment of pressure relief valve Download PDFInfo
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- CN114441162A CN114441162A CN202011215408.2A CN202011215408A CN114441162A CN 114441162 A CN114441162 A CN 114441162A CN 202011215408 A CN202011215408 A CN 202011215408A CN 114441162 A CN114441162 A CN 114441162A
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- 238000001514 detection method Methods 0.000 claims abstract description 69
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 43
- 239000007789 gas Substances 0.000 description 60
- 238000013461 design Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 108010066114 cabin-2 Proteins 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention relates to performance calibration equipment of a pressure relief valve, which comprises an air source, a pipeline and a constant temperature bin, wherein the pressure relief valve to be tested is positioned in the constant temperature bin, and the pipeline is communicated between the air source and the pressure relief valve to be tested; the constant-temperature control system also comprises an automatic control valve arranged on the pipeline, a heat exchange device, a first temperature detection unit, a flow meter and a third pressure detection unit, wherein the heat exchange device, the first temperature detection unit, the flow meter and the third pressure detection unit are positioned between the automatic control valve and the constant-temperature bin; and a second temperature detection unit is arranged in the constant temperature bin. The test convenience can be improved, and the test precision, the repeatability and the consistency are ensured.
Description
Technical Field
The invention relates to the technical field of valve detection equipment, in particular to performance calibration equipment of a pressure relief valve.
Background
The detection of the circulation capacity and the action pressure (opening pressure, full opening pressure and recoil pressure) performance of the hydrogen pressure release valve for the vehicle-mounted fuel cell hydrogen storage system is an important design certification item, and the performance of the hydrogen pressure release valve needs to be calibrated respectively in the environment of-40 ℃, normal temperature and 85 ℃, so that the design requirement is ensured to be met.
In the prior art, in the process of testing the pressure release valve, the hand valve needs to be slowly opened manually to boost the pressure release valve, then the system records the flow, the pressure and the temperature data of the inlet of the pressure release valve in real time, when the pressure and the flow of the inlet of the pressure release valve are close to the design values, the opening degree of the hand valve is maintained unchanged and the preset time is kept, then the hand valve is gradually closed, and the test is completed.
Because whole testing process is manual control, the testing process needs the aperture of real-time regulation hand valve, and it is comparatively inconvenient to operate to, because manual control precision is poor, repeatability and uniformity are all difficult to guarantee.
Therefore, how to improve the test convenience of the pressure relief valve performance calibration equipment and ensure the test accuracy, repeatability and consistency is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to provide performance calibration equipment of a pressure relief valve, which can improve the test convenience and ensure the test precision, repeatability and consistency.
In order to solve the technical problem, the invention provides performance calibration equipment of a pressure relief valve, which comprises an air source, a pipeline and a constant temperature bin, wherein the pressure relief valve to be tested is positioned in the constant temperature bin, and the pipeline is communicated between the air source and the pressure relief valve to be tested; the automatic temperature control device comprises a pipeline, a heat exchange device, a first temperature detection unit, a flow meter and a third pressure detection unit, wherein the automatic control valve is arranged on the pipeline; and a second temperature detection unit is arranged in the constant temperature bin.
Specifically, according to design requirements, different temperature points are selected, for example, several test temperature points are selected within the range of-40 ℃ to 85 ℃, the temperature in the thermostatic chamber is adjusted to each test temperature point, the temperature of gas in the pipeline is adjusted to the test temperature points through the heat exchange device, then the performance of the pressure release valve to be tested can be tested at the test temperature points, that is, when the detection results of the first temperature detection unit and the second temperature detection unit reach the test temperature points, the test conditions are met, and the test can be started.
The flow and the pressure of gas passing through the pipeline are controlled through the automatic control valve, the temperature of the gas reaches the test temperature point after the gas passes through the heat exchange device for heat exchange, and then the gas flows to the pressure release valve to be tested, in the process of gradually increasing the pressure in the pipeline through the automatic control valve at a preset speed, the detection result of the third pressure detection unit is gradually increased, the flow is also gradually increased to be close to the full-open pressure and the preset flow (such as within +/-5% of the full-open pressure and within +/-5% of the preset flow) of the pressure release valve to be tested, after the preset time (such as 30 seconds) of the opening degree of the automatic control valve is maintained, the pressure and the flow of the pipeline are gradually reduced through the automatic control valve at a preset speed until the pressure is lower than the recoil pressure, the flow reaches zero, and the test is completed. Specifically, in this embodiment, the preset speed is not specifically limited, and may be set according to design parameters of the pressure release valve to be tested, such as pressure and flow rate.
Because the automatic control valve can automatically control the gas flow and the pressure according to the preset speed, the automatic control valve is controlled by the set program without manual operation control of operators, thereby improving the convenience of the test and ensuring the test precision, the repeatability and the consistency. In addition, in this embodiment, the gas provided by the gas source may be nitrogen or compressed air, so as to avoid pollution caused by the gas during discharge.
Optionally, the automatic control valve is a pneumatic pressure regulating valve.
Optionally, the system further comprises an air supply branch, wherein the air supply branch is communicated between the pipeline and the pneumatic pressure regulating valve and used for supplying air to the pneumatic pressure regulating valve; the air supply branch (10) is provided with a second switch valve, and a second pressure reducing valve and a fourth pressure detection unit are sequentially arranged along the air flow direction.
Optionally, a manual control valve is further included, and the manual control valve and the automatic control valve are connected in parallel in the pipeline.
Optionally, the heat exchanger further comprises a check valve disposed on the pipeline, the check valve is disposed on an upstream side of the heat exchanger and close to the heat exchanger, and a flow direction of the check valve is from the upstream side to a downstream side.
Optionally, the automatic control system further comprises a first pressure reducing valve arranged between the air source and the automatic control valve, a first pressure detection unit is arranged on the upstream side of the first pressure reducing valve, and a second pressure detection unit is arranged on the downstream side of the first pressure reducing valve.
Optionally, the system further comprises an alarm device, and when the detection result of any one of the third pressure detection unit, the first temperature detection unit, the second pressure detection unit and the flow meter exceeds a corresponding preset value, the alarm device can send an alarm signal.
Optionally, the automatic control valve further comprises a first safety branch communicated with the pipeline, the first safety branch is provided with a first safety valve, and a connection point between the first safety branch and the pipeline is positioned between the second pressure detection unit and the automatic control valve;
and/or the automatic control valve further comprises a second safety branch communicated with the pipeline, a second safety valve is arranged on the second safety branch, and a connection point between the second safety branch and the pipeline is located between the automatic control valve and the third pressure detection unit.
Optionally, the gas source further comprises a filtering device arranged on the pipeline, and the filtering device is arranged at the gas outlet end of the gas source.
Optionally, the constant temperature cabin further comprises an adjusting branch provided with an adjusting valve, and the adjusting branch is connected with the constant temperature cabin in parallel.
Drawings
Fig. 1 is a schematic structural diagram of a performance calibration apparatus of a pressure relief valve provided in the present invention.
In fig. 1, the reference numerals are illustrated as follows:
1-gas source; 2-constant temperature storehouse; 3-a pressure release valve to be tested; 4-automatic control valve; 5-a heat exchange device; 6-a first temperature detection unit; 7-a flow meter; 8-a third pressure detection unit; 9-a second temperature detection unit; 10-an air supply branch; 11-a second pressure reducing valve; 12-a second on-off valve; 13-a fourth pressure detection unit; 14-a manual control valve; 15-a one-way valve; 16-a first pressure relief valve; 17-a first pressure detection unit; 18-a second pressure detection unit; 19-a filtration device; 20-a first safety branch; 21-a first safety valve; 22-a second safety branch; 23-a second safety valve; 24-a regulating valve; 25-a regulating branch; 26-first on-off valve.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides performance calibration equipment of a pressure relief valve, which comprises an air source 1, a pipeline and a constant temperature bin 2, wherein a pressure relief valve 3 to be tested is positioned in the constant temperature bin 2, the pipeline is communicated between the air source 1 and the pressure relief valve 3 to be tested, the performance calibration equipment further comprises an automatic control valve 4 arranged on the pipeline, a heat exchange device 5, a first temperature detection unit 6, a flowmeter 7 and a third pressure detection unit 8 which are positioned between the automatic control valve 4 and the constant temperature bin 2, wherein the first temperature detection unit 6 is arranged on the downstream side of the heat exchange device 5, and a second temperature detection unit 9 is further arranged in the constant temperature bin 2 and used for detecting the temperature in the constant temperature bin 2.
Herein, the "upstream side" herein means a side toward the upstream of the gas (i.e., a side toward the gas source 1), and the "downstream side" means a side toward the downstream of the gas (i.e., a side toward the thermostatic chamber 2). The gas provided by the gas source 1 may be nitrogen or compressed air, etc., so as to avoid pollution caused by the gas during discharge.
In order to complete the authentication of the flow capacity and the action pressure of the fuel cell pressure release valve, the performance test of the pressure release valve 3 to be tested needs to be carried out in an environment of-40 ℃ to 85 ℃ respectively so as to determine whether the pressure release valve 3 to be tested meets the design requirements, the pressure release valve 3 to be tested is located in the constant-temperature cabin 2, the constant-temperature cabin 2 can control the test environment temperature of the pressure release valve 3 to be tested, the gas source 1 supplies gas to the pipeline, and the heat exchange device 5 can adjust the temperature of the gas flowing through the pipeline, so that the accuracy of the performance test is ensured.
Specifically, according to design requirements, different temperature points are selected, for example, several test temperature points are selected within a range of-40 ℃ to 85 ℃, the temperature in the thermostatic chamber 2 is adjusted to each test temperature point, the temperature of the gas in the pipeline is adjusted to the test temperature point through the heat exchange device 5, then the performance test can be performed on the pressure release valve 3 to be tested at the test temperature point, that is, when the detection results of the first temperature detection unit 6 and the second temperature detection unit 9 reach the test temperature points, the test conditions are met, and the test can be started.
The flow and the pressure of gas passing through the pipeline are controlled through the automatic control valve 4, after the gas is subjected to heat exchange through the heat exchange device 5, the temperature reaches the test temperature point, then the gas flows to the pressure release valve 3 to be tested, in the process of gradually increasing the pressure in the pipeline through the automatic control valve 4 at a preset speed, the detection result of the third pressure detection unit 8 is gradually increased, the flow is also gradually increased to be close to the full-open pressure and the preset flow (such as within +/-5% of the full-open pressure and within +/-5% of the preset flow) of the pressure release valve 3 to be tested, after the preset time (such as 30 seconds) of the opening degree of the automatic control valve 4 is maintained, the pressure and the flow of the pipeline are gradually reduced through the automatic control valve 4 at a preset speed until the pressure is lower than the recoil pressure, the flow reaches zero, and the test is completed. Specifically, in this embodiment, the preset speed is not limited, and may be set according to design parameters of the pressure release valve 3 to be measured, such as pressure and flow rate.
Because automatic control valve 4 can be automatically according to preset speed control gas flow and pressure, controls this automatic control valve 4 through setting up the procedure, need not operating personnel manual operation control to improve the convenience of test, and can guarantee measuring accuracy, repeatability and uniformity.
In the above embodiment, the automatic control valve 4 is a pneumatic pressure regulating valve, and of course, the automatic control valve 4 may be provided as a solenoid valve or the like, and is not particularly limited herein.
Further, when the automatic control valve 4 is a pneumatic pressure regulating valve, the performance calibration apparatus further includes a gas supply branch 10, and the gas supply branch 10 is communicated between the pipeline and the pneumatic pressure regulating valve and used for supplying gas to the pneumatic pressure regulating valve. Or, in this embodiment, the gas supply branch 10 may be further arranged to supply gas to the pneumatic pressure regulating valve, and when the gas provided by the gas source 1 is supplied to the pneumatic pressure regulating valve through the gas supply branch 10, the overall structure can be simplified, and the cost can be saved. Specifically, the gas supply branch 10 is provided with a second switch valve 12, and a second pressure reducing valve 11 and a fourth pressure detecting unit 13 are sequentially arranged along the gas flow direction, wherein the second switch valve 12 may be an electric control valve or a hand valve for controlling the on-off of the gas supply branch 10, the second pressure reducing valve 11 is used for controlling the gas pressure provided by the gas supply branch 10 to the pneumatic pressure regulating valve, and the fourth pressure detecting unit 13 is used for detecting the gas supply pressure condition so as to accurately control the gas pressure of the pneumatic pressure regulating valve.
In the above embodiment, the performance calibration apparatus further comprises a manual control valve 14, the manual control valve 14 is connected in parallel with the automatic control valve 4 in the pipeline, the manual control valve 14 and the automatic control valve 4 have the same function for regulating the flow rate and pressure of the gas flowing through the pipeline, specifically, the gas flowing through the pipeline can be regulated through the automatic control valve 4, and the gas can be controlled through the manual control valve 14 when in repair and maintenance or when the automatic control valve 4 is in failure.
In the above embodiment, the performance calibration apparatus further includes a check valve 15 disposed in the pipeline, the check valve 15 is disposed on the upstream side of the heat exchange device 5 and is disposed close to the heat exchange device 5, the flow direction of the check valve 15 is from the upstream side to the downstream side, and the check valve 15 is disposed to avoid the situation that the gas in the pipeline flows backwards or diffuses towards the upstream side. The temperature of the gas after heat exchange can be in the range of-40 ℃ to 85 ℃, so that all parts on the downstream side of the heat exchange device 5 need to meet the working performance requirement in the temperature range, and the arrangement of the check valve 15 can prevent the gas after heat exchange from flowing to the upstream side, so that the temperature bearing range of all parts on the upstream side of the heat exchange device 5 is not required, and the cost can be reduced while the reliability of the system is ensured.
In the above embodiment, the performance calibration apparatus further includes the first pressure reducing valve 16 provided between the air supply 1 and the automatic control valve 4, and the upstream side of the first pressure reducing valve 16 is provided with the first pressure detecting unit 17, and the downstream side of the first pressure reducing valve 16 is provided with the second pressure detecting unit 18. That is, the first pressure detecting unit 17 is located between the air supply 1 and the first pressure reducing valve 16 and is used for detecting the pressure on the upstream side of the first pressure reducing valve 16, and the second pressure detecting unit 18 is located between the first pressure reducing valve 16 and the automatic control valve 4 and is used for detecting the pressure on the downstream side of the first pressure reducing valve 16 (namely, the pressure at the inlet end of the automatic control valve 4), and through the adjustment of the first pressure reducing valve 16, the pressure at the inlet end of the automatic control valve 4 can be ensured to be stable, and the test accuracy can be further improved.
In the above embodiment, the performance calibration apparatus further includes an alarm device (not shown in the figure), and when the detection result of any one of the third pressure detection unit 8, the first temperature detection unit 6, the second pressure detection unit 18, and the flow meter 7 exceeds the corresponding preset value, which indicates that a fault has occurred at this time, the alarm device can send an alarm signal so as to terminate the test in time, thereby ensuring that the pressure release valve 3 to be tested and each component of the performance calibration apparatus are not damaged. Further, when the detection result of the first temperature detection unit 6 or the fourth pressure detection unit 13 exceeds the corresponding preset value, the alarm device can also send out an alarm signal.
In the above embodiment, the performance calibration apparatus further includes a first safety branch 20 provided with a first safety valve 21 and/or a second safety branch 22 provided with a second safety valve 23, where the first safety branch 20 and the second safety branch 22 are both branches communicating with the pipeline and capable of relieving the pipeline in case of a fault. Specifically, the connection point between the first safety branch 20 and the pipeline is located between the automatic control valve 4 and the second pressure detection unit 18, when the pressure in the pipeline detected by the second pressure detection unit 18, which is located on the upstream side of the automatic control valve 4, is abnormal, the first safety valve 21 provided in the first safety branch 20 is opened, and the gas in the pipeline flows out from the first safety branch 20 to reduce the pressure therein until the detection result of the second pressure detection unit 18 returns to normal, and the first safety valve 21 is closed. The connection point of the second safety branch 22 and the pipeline is located between the automatic control valve 4 and the third pressure detection unit 8, when the pressure in the pipeline detected by the third pressure detection unit 8 is abnormal, the second safety valve 23 arranged in the second safety branch 22 is opened, the gas in the pipeline flows out from the second safety branch 22, so that the pressure in the pipeline is reduced until the detection result of the third pressure detection unit 8 returns to normal, and the second safety valve 23 is closed.
The arrangement of the first safety branch 20 and the second safety branch 22 can provide protection for the performance calibration apparatus, so that when an individual component fails, the test can be terminated, the safety of the test result can be ensured, and the influence on other components caused by the failure of the individual component can be avoided. And when the performance calibration equipment further comprises an alarm device, the first safety valve 21 and the second safety valve 23 are both connected with the alarm device, and when a fault occurs, the alarm device sends out an alarm signal (specifically, the alarm signal can be an acoustic signal or an optical signal), and meanwhile, the corresponding safety valves are opened.
In the above embodiment, the performance calibration apparatus further includes a filtering device 19 disposed on the pipeline and disposed at the air outlet end of the air source 1 to filter the air provided by the air source 1, so as to avoid the influence of impurities mixed in the air on the subsequent detection. And, the gas outlet end of the gas source 1 is further provided with a first switch valve 26 for controlling the gas source 1 to ventilate the pipeline.
In the above embodiment, the performance calibration apparatus further includes an adjusting branch 25 provided with an adjusting valve 24, the adjusting branch 25 is connected in parallel with the constant temperature chamber 2, before the performance test is performed, the temperature in the constant temperature chamber 2 is adjusted to a test temperature point (and the detection result of the second temperature detecting unit 9 is the test temperature point), meanwhile, the gas source 1 supplies gas to the pipeline, at this time, the adjusting valve 24 may be opened, the test condition is adjusted through the adjusting branch 25 until the first temperature detecting unit 6 detects that the temperature of the gas in the pipeline reaches the test temperature point, the adjusting valve 24 is closed, and the gas flows to the pressure relief valve 3 to be tested along the pipeline, so that the test can be performed. After the test is finished, the regulating valve 24 can be opened, and the gas in the pipeline is decompressed through the regulating branch 25.
Of course, in this embodiment, when the temperature of the gas in the pipeline is adjusted by the heat exchanging device 5, the gas in the pipeline may also flow through the pressure release valve 3 to be tested, and the adjustment branch 25 and the adjustment valve 24 are provided, so that the adjustment before the test is more convenient, and the adjustment is convenient for use during maintenance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. The performance calibration equipment of the pressure relief valve is characterized by comprising an air source (1), a pipeline and a constant temperature bin (2), wherein the pressure relief valve (3) to be tested is positioned in the constant temperature bin (2), and the pipeline is communicated between the air source (1) and the pressure relief valve (3) to be tested;
the constant-temperature control device is characterized by further comprising an automatic control valve (4) arranged on the pipeline, and a heat exchange device (5), a first temperature detection unit (6), a flow meter (7) and a third pressure detection unit (8) which are arranged between the automatic control valve (4) and the constant-temperature bin (2), wherein the first temperature detection unit (6) is arranged on the downstream side of the heat exchange device (5);
and a second temperature detection unit (9) is arranged in the constant temperature bin (2).
2. The performance calibration arrangement of a pressure relief valve according to claim 1, characterized in that said automatic control valve (4) is a pneumatic pressure regulating valve.
3. The performance calibration equipment of the pressure relief valve according to claim 2, further comprising a gas supply branch (10), wherein the gas supply branch (10) is communicated between the pipeline and the pneumatic pressure regulating valve and used for supplying gas to the pneumatic pressure regulating valve;
the air supply branch (10) is provided with a second switch valve, and a second pressure reducing valve (11) and a fourth pressure detection unit (13) are sequentially arranged along the air flow direction.
4. The apparatus for calibrating the performance of a pressure relief valve according to any of claims 1-3, further comprising a manual control valve (14), wherein said manual control valve (14) and said automatic control valve (4) are connected in parallel in said pipeline.
5. The performance calibration equipment of the pressure relief valve according to any one of claims 1-3, further comprising a check valve (15) disposed in the pipeline, wherein the check valve (15) is disposed on the upstream side of the heat exchange device (5) and close to the heat exchange device (5), and the flow direction of the check valve (15) is from the upstream side to the downstream side.
6. The performance calibration equipment of the pressure relief valve according to any one of claims 1-3, characterized by further comprising a first pressure reducing valve (16) arranged between the air source (1) and the automatic control valve (4), wherein a first pressure detection unit (17) is arranged at the upstream side of the first pressure reducing valve (16), and a second pressure detection unit (18) is arranged at the downstream side of the first pressure reducing valve (16).
7. The performance calibration equipment of the pressure relief valve according to claim 6, further comprising an alarm device, wherein when the detection result of any one of the third pressure detection unit (8), the first temperature detection unit (6), the second pressure detection unit (18) and the flow meter (7) exceeds a corresponding preset value, the alarm device can send an alarm signal.
8. The performance calibration arrangement of a pressure relief valve according to claim 6, further comprising a first safety branch (20) communicating with the line, the first safety branch (20) being provided with a first safety valve (21), and a connection point between the first safety branch (20) and the line being located between the second pressure detection unit (18) and the automatic control valve (4);
and/or further comprising a second safety branch (22) communicating with the line, the second safety branch (22) being provided with a second safety valve (23), and a connection point between the second safety branch (22) and the line being located between the automatic control valve (4) and the third pressure detection unit (8).
9. The performance calibration equipment of the pressure relief valve according to any one of claims 1-3, further comprising a filtering device (19) disposed on the pipeline, wherein the filtering device (19) is disposed at an air outlet end of the air source (1).
10. The performance calibration equipment of the pressure relief valve according to any one of claims 1-3, characterized by further comprising an adjusting branch (25) provided with an adjusting valve (24), wherein the adjusting branch (25) is arranged in parallel with the thermostatic cartridge (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011215408.2A CN114441162A (en) | 2020-11-04 | 2020-11-04 | Performance calibration equipment of pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011215408.2A CN114441162A (en) | 2020-11-04 | 2020-11-04 | Performance calibration equipment of pressure relief valve |
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| Publication Number | Publication Date |
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| CN114441162A true CN114441162A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011215408.2A Pending CN114441162A (en) | 2020-11-04 | 2020-11-04 | Performance calibration equipment of pressure relief valve |
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| CN (1) | CN114441162A (en) |
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|---|---|---|---|---|
| WO2007055370A1 (en) * | 2005-11-14 | 2007-05-18 | Ham-Let Motoyama Japan Ltd. | Fluid control unit, pressure control valve, and pressure control method |
| JP2018127902A (en) * | 2017-02-06 | 2018-08-16 | 株式会社島津製作所 | Automatic pressure regulating valve and vacuum pumping system |
| CN109238686A (en) * | 2017-07-06 | 2019-01-18 | 北京康斯特仪表科技股份有限公司 | Detector for safety valve and safety valve detection method |
| CN109520722A (en) * | 2018-11-23 | 2019-03-26 | 格力电器（武汉）有限公司 | Safety valve relieving characteristics test macro and method |
| NO20181116A1 (en) * | 2018-08-24 | 2020-02-25 | Inline Test As | Portable system for testing a valve in a process plant |
| CN111307442A (en) * | 2018-12-12 | 2020-06-19 | 上海汽车集团股份有限公司 | Pressure reducing valve durability test device, method and system |
| KR20200113982A (en) * | 2019-03-27 | 2020-10-07 | (주)다흥 | Performance test measurement equipment for safety valve |
| CN111855191A (en) * | 2020-06-08 | 2020-10-30 | 合肥通用机械研究院有限公司 | Low-temperature safety valve performance test system and test method |
-
2020
- 2020-11-04 CN CN202011215408.2A patent/CN114441162A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007055370A1 (en) * | 2005-11-14 | 2007-05-18 | Ham-Let Motoyama Japan Ltd. | Fluid control unit, pressure control valve, and pressure control method |
| JP2018127902A (en) * | 2017-02-06 | 2018-08-16 | 株式会社島津製作所 | Automatic pressure regulating valve and vacuum pumping system |
| CN109238686A (en) * | 2017-07-06 | 2019-01-18 | 北京康斯特仪表科技股份有限公司 | Detector for safety valve and safety valve detection method |
| NO20181116A1 (en) * | 2018-08-24 | 2020-02-25 | Inline Test As | Portable system for testing a valve in a process plant |
| CN109520722A (en) * | 2018-11-23 | 2019-03-26 | 格力电器（武汉）有限公司 | Safety valve relieving characteristics test macro and method |
| CN111307442A (en) * | 2018-12-12 | 2020-06-19 | 上海汽车集团股份有限公司 | Pressure reducing valve durability test device, method and system |
| KR20200113982A (en) * | 2019-03-27 | 2020-10-07 | (주)다흥 | Performance test measurement equipment for safety valve |
| CN111855191A (en) * | 2020-06-08 | 2020-10-30 | 合肥通用机械研究院有限公司 | Low-temperature safety valve performance test system and test method |
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