CN114323633A - Overflow valve testing device and method - Google Patents
Overflow valve testing device and method Download PDFInfo
- Publication number
- CN114323633A CN114323633A CN202111657916.0A CN202111657916A CN114323633A CN 114323633 A CN114323633 A CN 114323633A CN 202111657916 A CN202111657916 A CN 202111657916A CN 114323633 A CN114323633 A CN 114323633A
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- air
- cock
- supply branch
- Prior art date
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Abstract
The invention discloses a testing device and a testing method of an overflow valve, which comprise a main gas source, a first gas supply branch and a second gas supply branch, wherein the first gas supply branch and the second gas supply branch are communicated with the main gas source; the tail ends of the first air supply branch and the second air supply branch are combined into a fifth air supply branch; the first air supply branch is sequentially provided with a first pressure regulating valve, a first plug valve, a fifth plug valve, an electromagnetic valve, a first pressure gauge and a tested overflow valve; the first air supply branch is connected with a third air supply branch and a fourth air supply branch; a second pressure regulating valve, a third air cylinder and an electromagnetic valve are sequentially arranged on the second air supply branch; and a second pressure gauge is arranged on the fifth air supply branch and connected with three groups of end pipelines which are respectively connected with the water tank, the fourth air cylinder and the fifth air cylinder. The testing method can realize pressure testing, sealing testing, reverse non-return sealing testing, back-closing pressure testing and flow testing; the invention integrates a simplified test method and simulates the test of actual loading application requirements.
Description
Technical Field
The invention relates to the field of overflow valve testing, in particular to a device and a method for testing an overflow valve.
Background
The relief valve is a pressure control valve. The pressure control valve is used for controlling and managing the downstream pressure, and when the input pressure exceeds the setting pressure, the valve port is opened to output the pressure. When the input pressure drops to the point that the valve port is closed, the pressure is no longer output. The pressure relief, overflow and protection functions are realized on the pipeline equipment. However, no uniform testing method and device exist in actual work, so that the overflow valve has no consistent testing means. In the existing testing method, the opening pressure and the reverse tightness of the overflow valve can only be tested, and the other methods cannot be tested, so that the performance index of the product is lost in the processes of delivery and warehousing inspection.
Disclosure of Invention
The invention aims to provide a testing device and a testing method of an overflow valve aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme: the testing device of the overflow valve comprises a main gas source, a first gas supply branch and a second gas supply branch, wherein the first gas supply branch and the second gas supply branch are communicated with the main gas source; the tail ends of the first air supply branch and the second air supply branch are combined into a pipeline to form a fifth air supply branch;
the first air supply branch is sequentially provided with a first pressure regulating valve, a first cock, a fifth cock, an electromagnetic valve, a first pressure gauge and a tested overflow valve;
a third air supply branch and a fourth air supply branch are connected to the pipeline between the first cock and the fifth cock, and the other ends of the third air supply branch and the fourth air supply branch are connected to the pipeline between the fifth cock and the electromagnetic valve; the third gas supply branch is sequentially provided with a second cock, a first cutoff device, a first gas cylinder and a seventh cock; a fourth cock, a second air cylinder and a sixth cock are sequentially installed on the fourth air supply branch;
a second pressure regulating valve, a third air cylinder and an electromagnetic valve are sequentially arranged on the second air supply branch;
and the fifth gas supply branch is provided with a second pressure gauge and connected with three groups of end pipelines, the first group of end pipelines is connected with the water tank, the second group of end pipelines is connected with the fourth gas storage cylinder, and the third group of end pipelines is connected with the fifth gas storage cylinder.
Further, the electromagnetic valves on the first air supply branch are a first normally closed electromagnetic valve with exhaust and a first normally closed electromagnetic valve without exhaust in sequence.
Furthermore, the electromagnetic valves on the second air supply branch are a second normally closed electromagnetic valve with exhaust and a second normally closed electromagnetic valve without exhaust in sequence.
Furthermore, a pipeline between the first cut-off device and the first air storage cylinder on the third air supply branch is connected with an atmosphere access branch, and a second cut-off device and a third cock are installed on the atmosphere access branch.
Furthermore, an eighth cock is installed on the pipeline in front of the water tank.
Furthermore, a ninth cock is installed on the pipeline in front of the fourth air cylinder.
Furthermore, a tenth cock is installed on a pipeline in front of the fifth air cylinder.
Further, the diameter of the through hole of the first cutoff device is phi 0.6.
Further, the diameter of the through hole of the second flow interception device is phi 2.5.
The invention also provides a testing method of the testing device based on the overflow valve, which comprises the steps of pressure testing, sealing testing, reverse non-return sealing testing, back-closing pressure testing and flow testing;
and (3) testing the opening pressure: and (3) supplying air by a main air source, opening the first cock, the second cock, the seventh cock and the eighth cock, closing the rest cocks, and electrifying the first normally closed solenoid valve with exhaust and the first normally closed solenoid valve without exhaust. Adjusting the output pressure value of the first pressure adjusting valve, intercepting the gas through a through hole of a first intercepting device, increasing the pressure after the gas passes through a first gas storage cylinder, and recording the pressure of a first pressure gauge as opening pressure when bubbles begin to be generated in the water tank;
opening the sealing test: and (3) supplying air by a main air source, opening the first cock and the fifth cock, closing the rest cocks, and electrifying the first normally closed solenoid valve with exhaust and the first normally closed solenoid valve without exhaust. And regulating the pressure of the first pressure regulating valve to a specified air pressure, wherein the first pressure gauge and the second pressure gauge have the same pressure output. After the air pressure is stable, the first normally closed electromagnetic valve with exhaust and the first normally closed electromagnetic valve without exhaust are powered off, and then the pressure reduction value of the first pressure meter within the set time can be recorded;
reverse non-return sealing test: the main gas source supplies gas, the eighth valve, the ninth valve and the tenth valve are closed, and the second normally closed solenoid valve with exhaust and the second normally closed solenoid valve without exhaust are electrified; and adjusting the pressure of the second pressure adjusting valve to a specified air pressure, passing through a third air storage cylinder, outputting the pressure by a second pressure gauge, powering off a second normally closed solenoid valve with exhaust and a second normally closed solenoid valve without exhaust after the air pressure is stabilized, and recording a pressure reduction value of the second pressure gauge within a specified time.
And (3) a back pressure test: the main gas source supplies gas, the first valve, the fifth valve, the seventh valve and the ninth valve are opened, the other valves are closed, and the first normally closed solenoid valve with exhaust and the first normally closed solenoid valve without exhaust are electrified; adjusting the pressure of the first pressure regulating valve to a specified air pressure, wherein the first pressure gauge and the second pressure gauge have the same pressure output; after the air pressure is stable, closing the first plug door, and opening the third plug door to enable the air pressure to carry out intercepting and exhausting through the through hole of the second intercepting device; and the air pressure of the pressure gauge begins to decrease, and the pressure when the air pressure of the second pressure gauge stops decreasing is recorded as the turn-off pressure.
And (3) flow testing: the main gas source supplies gas, a first cock, a fourth cock, a sixth cock and a tenth cock are opened, the other cocks are closed, and a first normally closed solenoid valve with exhaust and a first normally closed solenoid valve without exhaust are electrified; and (3) regulating the pressure of the first pressure regulating valve to a specified air pressure, passing through the second air reservoir, recording the time for increasing the pressure of the second pressure gauge to a specified value, and calculating the flow according to a relational formula between the air pressure in the second air reservoir and the flow.
The invention has the beneficial effects that:
1. integrating a simplified test method, and simulating the test of actual loading application requirements;
2. the test point covers all the working characteristics of the overflow valve.
3. The standardized testing device and the standardized testing method are provided, so that the testing efficiency is improved.
4. The tested piece is connected with the device, and product testing can be realized only by replacing the fastening tool, so that the operation is simple and convenient.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
in the figure, a first pressure regulating valve 101, a second pressure regulating valve 102, a first cock 201, a second cock 202, a third cock 203, a fourth cock 204, a fifth cock 205, a sixth cock 206, a seventh cock 207, an eighth cock 208, a ninth cock 209, a tenth cock S210, a first normally closed solenoid valve with exhaust 301, a second normally closed solenoid valve with exhaust 303, a first normally closed solenoid valve without exhaust 302, a second normally closed solenoid valve without exhaust 304, a first shutoff device 401, a second shutoff device 402, a first air cylinder 501, a second air cylinder 502, a third air cylinder 503, a fourth air cylinder 504, a fifth air cylinder 505, a water tank 506, a first pressure gauge 601, and a second pressure gauge 602.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the testing device for the overflow valve provided by the invention comprises a main gas source, and a first gas supply branch and a second gas supply branch which are communicated with the main gas source; the tail ends of the first air supply branch and the second air supply branch are combined into a pipeline to form a fifth air supply branch;
the first air supply branch is sequentially provided with a first pressure regulating valve 101, a first cock 201, a fifth cock 205, a first normally closed solenoid valve 301 with exhaust, a first normally closed solenoid valve 302 without exhaust, a first pressure gauge 601 and a tested overflow valve; the first normally closed solenoid valve 301 with exhaust and the first normally closed solenoid valve 302 without exhaust are used for controlling the on and off of gas, when the off is needed, the pipeline gas between the first normally closed solenoid valve 301 with exhaust and the first normally closed solenoid valve 302 without exhaust will be exhausted along with the first normally closed solenoid valve 301 with exhaust, which is equivalent to that no input is provided at the front section of the first normally closed solenoid valve 302 without exhaust, thereby avoiding the interference on the off of the downstream gas.
A third air supply branch and a fourth air supply branch are connected to a pipeline between the first cock 201 and the fifth cock 205, and the other ends of the third air supply branch and the fourth air supply branch are connected to a pipeline between the fifth cock 205 and the first normally closed solenoid valve 301 with exhaust; the third air supply branch is sequentially provided with a second cock 202, a first cutoff device 401, a first air cylinder 501 and a seventh cock 207; the fourth air supply branch is sequentially provided with a fourth cock 204, a second air cylinder 502 and a sixth cock 206; a pipeline between the first cut-off device 401 and the first air cylinder 501 on the third air supply branch is connected with an atmosphere access branch, and a second cut-off device 402 and a third cock 203 are installed on the atmosphere access branch;
the second air supply branch is sequentially provided with a second pressure regulating valve 102, a third air cylinder 503, a second normally closed solenoid valve with exhaust 303 and a second normally closed solenoid valve without exhaust 304;
the fifth gas supply branch is provided with a second pressure gauge 602 and is connected with three groups of end pipelines, the first group of end pipelines are connected with the water tank 506 through the eighth cock 208, the second group of end pipelines are connected with the fourth gas cylinder 504 through the ninth cock 209, the third group of end pipelines are connected with the fifth gas cylinder 505 through the tenth cock 210, the functions realized by the gas cylinders are consistent, and the gas cylinders serve as loads for storing gas and stabilizing the flow rate of the gas.
The invention also provides a testing method of the overflow valve, which comprises pressure testing, sealing testing, reverse non-return sealing testing, back-closing pressure testing and flow testing; the specific process is as follows;
and (3) testing the opening pressure: the main air source supplies air, the first cock 201, the second cock 202, the seventh cock 207 and the eighth cock 208 are opened, the other cocks are closed, and the first normally closed solenoid valve with exhaust 301 and the first normally closed solenoid valve without exhaust 302 are electrified. The output pressure value of the first pressure regulating valve 101 is regulated, the gas is intercepted through a first intercepting device 401 with a phi 0.6 through hole, the pressure slowly rises after passing through the first air cylinder 501, and the pressure of the first pressure gauge 601 is recorded as the opening pressure when the water tank 506 begins to generate bubbles.
Opening the sealing test: the main air source supplies air, the first cock 201 and the fifth cock 205 are opened, the other cocks are closed, and the first normally closed solenoid valve with exhaust 301 and the first normally closed solenoid valve without exhaust 302 are electrified. The pressure of the first pressure regulating valve 101 is regulated to a predetermined pressure, and the first pressure gauge 601 and the second pressure gauge 602 have the same pressure output. After the air pressure is stabilized, the first normally closed solenoid valve 301 with exhaust and the first normally closed solenoid valve 302 without exhaust are powered off, and the pressure reduction value of the first pressure gauge 601 within the specified time can be recorded.
Reverse non-return sealing test: the main air source supplies air, the eighth valve 208, the ninth valve 209 and the tenth valve S210 are closed, and the second normally closed solenoid valve with exhaust 303 and the second normally closed solenoid valve without exhaust 304 are electrified. The pressure of the second pressure regulating valve 102 is regulated to a specified pressure and passes through the third air reservoir 503, after the pressure output of the second pressure gauge 602 is stabilized, the second normally closed solenoid valve 303 with exhaust and the second normally closed solenoid valve 304 without exhaust are powered off, and the pressure reduction value of the second pressure gauge 602 within a specified time is recorded.
And (3) a back pressure test: the main air source supplies air, the first cock 201, the fifth cock 205, the seventh cock 207 and the ninth cock 209 are opened, the rest cocks are closed, and the first normally closed solenoid valve with exhaust 301 and the first normally closed solenoid valve without exhaust 302 are electrified. The fourth air reservoir 504 is used as a load to store air and stabilize the air flow rate; the pressure of the first pressure regulating valve 101 is regulated to a predetermined pressure, and the first pressure gauge 601 and the second pressure gauge 602 have the same pressure output. After the air pressure is stabilized, the first valve 201 is closed, and the third valve 203 is opened, so that the air pressure is subjected to intercepting exhaust through the second intercepting device 402 with the phi 2.5 through hole pair. The pressure in the pressure gauge begins to decrease, and the recorded pressure when the pressure in the second pressure gauge 602 stops decreasing is the turn-off pressure.
And (3) flow testing: the main air source supplies air, the first cock 201, the fourth cock 204, the sixth cock 206 and the tenth cock S210 are opened, the rest cocks are closed, and the first normally closed solenoid valve with exhaust 301 and the first normally closed solenoid valve without exhaust 302 are electrified. The fifth air reservoir 505 is used as a load and stores air and stabilizes the flow rate of the air; adjusting the pressure of the first pressure regulating valve 101 to a predetermined pressureThe time it takes for the pressure of the second pressure gauge 602 to increase to a specified value is recorded by pressing through the second air reservoir 502, according to the formula Q ═ Ve × (. DELTA.P/P)0) X (60/T), the flow rate can be calculated. Where Ve is the volume (L) and Δ P is the pressure drop (kPa), P0Standard atmospheric pressure (kPa), T detection time (S);
the above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are within the spirit of the invention and the scope of the appended claims.
Claims (10)
1. The overflow valve testing device is characterized by comprising a main gas source, a first gas supply branch and a second gas supply branch, wherein the first gas supply branch and the second gas supply branch are communicated with the main gas source; the tail ends of the first air supply branch and the second air supply branch are combined into a pipeline to form a fifth air supply branch;
the first air supply branch is sequentially provided with a first pressure regulating valve, a first cock, a fifth cock, an electromagnetic valve, a first pressure gauge and a tested overflow valve;
a third air supply branch and a fourth air supply branch are connected to the pipeline between the first cock and the fifth cock, and the other ends of the third air supply branch and the fourth air supply branch are connected to the pipeline between the fifth cock and the electromagnetic valve; the third gas supply branch is sequentially provided with a second cock, a first cutoff device, a first gas cylinder and a seventh cock; a fourth cock, a second air cylinder and a sixth cock are sequentially installed on the fourth air supply branch;
a second pressure regulating valve, a third air cylinder and an electromagnetic valve are sequentially arranged on the second air supply branch;
and the fifth gas supply branch is provided with a second pressure gauge and connected with three groups of end pipelines, the first group of end pipelines is connected with the water tank, the second group of end pipelines is connected with the fourth gas storage cylinder, and the third group of end pipelines is connected with the fifth gas storage cylinder.
2. The overflow valve testing device of claim 1, wherein the solenoid valves of the first air supply branch are a first normally closed solenoid valve with exhaust and a first normally closed solenoid valve without exhaust in sequence.
3. The overflow valve testing device of claim 1, wherein the electromagnetic valves on the second air supply branch are a second normally closed electromagnetic valve with exhaust and a second normally closed electromagnetic valve without exhaust in sequence.
4. The overflow valve testing device of claim 1, wherein an atmospheric branch is connected to the pipeline between the first cut-off device and the first air reservoir in the third air supply branch, and a second cut-off device and a third cock are installed in the atmospheric branch.
5. The overflow valve testing device of claim 1, wherein an eighth cock is installed on the pipeline in front of the water tank.
6. The overflow valve testing device of claim 1, wherein a ninth cock is installed on the pipeline in front of the fourth air cylinder.
7. The apparatus for testing an overflow valve according to claim 1, wherein a tenth cock is installed on a line before the fifth air cylinder.
8. The apparatus for testing an overflow valve according to claim 1, wherein the first shut-off device has a bore diameter of phi 0.6.
9. The apparatus for testing an overflow valve according to claim 1, wherein the diameter of the through hole of the second shut-off device is Φ 2.5.
10. The testing method of the testing device of the overflow valve based on any one of claims 1 to 9 is characterized by comprising a pressure test, a sealing test, a reverse non-return sealing test, a back-closing pressure test and a flow test;
and (3) testing the opening pressure: and (3) supplying air by a main air source, opening the first cock, the second cock, the seventh cock and the eighth cock, closing the rest cocks, and electrifying the first normally closed solenoid valve with exhaust and the first normally closed solenoid valve without exhaust. Adjusting the output pressure value of the first pressure adjusting valve, intercepting the gas through a through hole of a first intercepting device, increasing the pressure after the gas passes through a first gas storage cylinder, and recording the pressure of a first pressure gauge as opening pressure when bubbles begin to be generated in the water tank;
opening the sealing test: and (3) supplying air by a main air source, opening the first cock and the fifth cock, closing the rest cocks, and electrifying the first normally closed solenoid valve with exhaust and the first normally closed solenoid valve without exhaust. And regulating the pressure of the first pressure regulating valve to a specified air pressure, wherein the first pressure gauge and the second pressure gauge have the same pressure output. After the air pressure is stable, the first normally closed electromagnetic valve with exhaust and the first normally closed electromagnetic valve without exhaust are powered off, and then the pressure reduction value of the first pressure meter within the set time can be recorded;
reverse non-return sealing test: the main gas source supplies gas, the eighth valve, the ninth valve and the tenth valve are closed, and the second normally closed solenoid valve with exhaust and the second normally closed solenoid valve without exhaust are electrified; and adjusting the pressure of the second pressure adjusting valve to a specified air pressure, passing through a third air storage cylinder, outputting the pressure by a second pressure gauge, powering off a second normally closed solenoid valve with exhaust and a second normally closed solenoid valve without exhaust after the air pressure is stabilized, and recording a pressure reduction value of the second pressure gauge within a specified time.
And (3) a back pressure test: the main gas source supplies gas, the first valve, the fifth valve, the seventh valve and the ninth valve are opened, the other valves are closed, and the first normally closed solenoid valve with exhaust and the first normally closed solenoid valve without exhaust are electrified; adjusting the pressure of the first pressure regulating valve to a specified air pressure, wherein the first pressure gauge and the second pressure gauge have the same pressure output; after the air pressure is stable, closing the first plug door, and opening the third plug door to enable the air pressure to carry out intercepting and exhausting through the through hole of the second intercepting device; and the air pressure of the pressure gauge begins to decrease, and the pressure when the air pressure of the second pressure gauge stops decreasing is recorded as the turn-off pressure.
And (3) flow testing: the main gas source supplies gas, a first cock, a fourth cock, a sixth cock and a tenth cock are opened, the other cocks are closed, and a first normally closed solenoid valve with exhaust and a first normally closed solenoid valve without exhaust are electrified; and (3) regulating the pressure of the first pressure regulating valve to a specified air pressure, passing through the second air reservoir, recording the time for increasing the pressure of the second pressure gauge to a specified value, and calculating the flow according to a relational formula between the air pressure in the second air reservoir and the flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111657916.0A CN114323633B (en) | 2021-12-30 | 2021-12-30 | Testing device and method for overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111657916.0A CN114323633B (en) | 2021-12-30 | 2021-12-30 | Testing device and method for overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114323633A true CN114323633A (en) | 2022-04-12 |
| CN114323633B CN114323633B (en) | 2024-01-30 |
Family
ID=81019068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111657916.0A Active CN114323633B (en) | 2021-12-30 | 2021-12-30 | Testing device and method for overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114323633B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0503819A2 (en) * | 1991-03-14 | 1992-09-16 | Dresser Industries Inc. | Method and apparatus for determining set pressure of pilot operated pressure relief valve |
| WO2006092548A1 (en) * | 2005-03-04 | 2006-09-08 | Seetru Limited | Safety valve testing |
| CN102359872A (en) * | 2011-09-06 | 2012-02-22 | 宜宾天瑞达汽车零部件有限公司 | Detection device of vacuum solenoid valve |
| CN104215437A (en) * | 2013-05-30 | 2014-12-17 | 宁波富华阀门有限公司 | Performance detecting system for low-temperature pressure regulating valve |
| CN104235086A (en) * | 2013-06-20 | 2014-12-24 | 东风实业(十堰)车辆有限公司 | Small-flow high-pressure gas generator |
| CN207336052U (en) * | 2017-10-24 | 2018-05-08 | 四川省简阳市川力机械制造有限责任公司 | A kind of safety valve, regulating valve Performance Test System |
| CN111855109A (en) * | 2020-07-29 | 2020-10-30 | 东科克诺尔商用车制动技术有限公司 | Check valve opening pressure and sealing test device |
-
2021
- 2021-12-30 CN CN202111657916.0A patent/CN114323633B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0503819A2 (en) * | 1991-03-14 | 1992-09-16 | Dresser Industries Inc. | Method and apparatus for determining set pressure of pilot operated pressure relief valve |
| CN1064939A (en) * | 1991-03-14 | 1992-09-30 | 德雷塞工业有限公司 | Be used to detect the method and apparatus of the reduction valve set pressure of operation valve control |
| WO2006092548A1 (en) * | 2005-03-04 | 2006-09-08 | Seetru Limited | Safety valve testing |
| CN102359872A (en) * | 2011-09-06 | 2012-02-22 | 宜宾天瑞达汽车零部件有限公司 | Detection device of vacuum solenoid valve |
| CN104215437A (en) * | 2013-05-30 | 2014-12-17 | 宁波富华阀门有限公司 | Performance detecting system for low-temperature pressure regulating valve |
| CN104235086A (en) * | 2013-06-20 | 2014-12-24 | 东风实业(十堰)车辆有限公司 | Small-flow high-pressure gas generator |
| CN207336052U (en) * | 2017-10-24 | 2018-05-08 | 四川省简阳市川力机械制造有限责任公司 | A kind of safety valve, regulating valve Performance Test System |
| CN111855109A (en) * | 2020-07-29 | 2020-10-30 | 东科克诺尔商用车制动技术有限公司 | Check valve opening pressure and sealing test device |
Non-Patent Citations (1)
| Title |
|---|
| 范伟军等: "汽车气压控制阀综合性能检测系统研制", 中国测试 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114323633B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100427913C (en) | Equipment for testing valve performance of oil fuel pump | |
| CN104298163A (en) | Low-temperature internal pressure automatic loading control system | |
| CN105486511A (en) | Debug method of state parameters of test bed | |
| CN113340585B (en) | General test bench of fuel cell hydrogen subsystem valve body | |
| CN102720667B (en) | A kind of test method of engine oil pump pressure-limiting valve cracking pressure and device | |
| CN114323633A (en) | Overflow valve testing device and method | |
| CN215598704U (en) | Throttle valve test tool for fuel booster and exhaust valve | |
| CN212155023U (en) | Test platform | |
| CN112414700A (en) | Electromagnetic valve performance testing device and testing method | |
| US11499894B2 (en) | Sample pressure reducing system | |
| CN113758658A (en) | Airplane pipeline airtightness test device and method | |
| CN202869783U (en) | Detection device for silencer pressure test | |
| CN113669328A (en) | Oil tank breather valve performance detection device and test method thereof | |
| CN203641891U (en) | Automatic odorizing device | |
| CN219224149U (en) | Hydrogen injector performance test system | |
| CN117664471A (en) | Main regulating valve assembly testing equipment and testing method | |
| KR101502785B1 (en) | The optimal supplement flow leak test method and system test time diagnostic methods | |
| CN203587315U (en) | Vacuum buffer device with pressure stable control | |
| CN114459742B (en) | Pressure reducer performance test system and multi-mode dynamic performance test method | |
| CN213516326U (en) | Valve off-line pressure test tool | |
| CN216695425U (en) | Gas supply system | |
| CN217560895U (en) | Electromagnetic valve sealing performance testing system | |
| CN219388277U (en) | Hydraulic system for detecting sealing performance of exhaust valve actuator and fuel booster | |
| CN215115151U (en) | Device structure for testing durability of pressure stabilizing valve | |
| CN204420279U (en) | Under-voltage auto-closing pressure regulator after valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |