CN112729724A - Overflow valve calibration stand - Google Patents
Overflow valve calibration stand Download PDFInfo
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- CN112729724A CN112729724A CN202011629996.4A CN202011629996A CN112729724A CN 112729724 A CN112729724 A CN 112729724A CN 202011629996 A CN202011629996 A CN 202011629996A CN 112729724 A CN112729724 A CN 112729724A
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- 238000012360 testing method Methods 0.000 claims abstract description 116
- 238000001514 detection method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 16
- 238000011056 performance test Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 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
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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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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Abstract
The application discloses overflow valve check table, wherein, including the workpiece station that awaits measuring, with the test pipeline that awaits measuring the workpiece station connection, the test pipeline is connected with the pressure supply device, the pressure supply device is connected with air feeder, air feeder with supply to be equipped with the gas proportional valve between the pressure supply device, through the inlet pressure of gas proportional valve control pressure supply device, air feeder output air current, through supply to press the device to supply to press the back, the output pressure ripples is transmitted to the workpiece station that awaits measuring through the test pipeline, this application overflow valve check table carries out pressure test, convenient operation, and the measuring accuracy is high from test pipeline conveying pressure ripples to the workpiece station that awaits measuring overflow valve through air feeder and pressure supply device.
Description
Technical Field
The application relates to an overflow valve field especially relates to an overflow valve calibration stand.
Background
The safety overflow valve on the well head control disc, also called safety valve, belongs to a proportional relief valve, which is opened gradually when the pressure rises, the hydraulic safety overflow valve on the well head control disc comprises an oil pilot loop low-pressure overflow valve (within 130 psi), a main valve loop overflow valve (within 6000 psi), a wing valve loop overflow valve (within 6000 psi) and an underground loop overflow valve (within 30000 psi), and the pressure coverage is wide. Each proportional relief valve is subjected to set performance and reseal performance tests.
The traditional safety valve calibration stand is characterized in that the pressure is generally below 70MPa (10000 psi), a test loop and manual operation manual recording are carried out according to the requirements of a capacity gauge, the traditional safety valve calibration stand cannot be suitable for detection of various requirements, manual operation is carried out, the test precision is not high, and data cannot be automatically recorded and a data curve cannot be generated in the prior art. Meanwhile, when the pressure exceeds 10000psi, the pressure control precision of the calibration equipment is low, and the calibration requirement cannot be met, so the prior art needs to be improved.
Disclosure of Invention
The purpose of this application is to solve the problem that the check-up efficiency and the check-up precision of current overflow valve are low.
The technical purpose of the application is realized by the following technical scheme: the utility model provides an overflow valve check table, wherein, includes the test station that awaits measuring a station, with the test pipeline that awaits measuring a station connection, the test pipeline is connected with the pressure supply device, the pressure supply device is connected with air feeder, air feeder with supply to be equipped with the gas proportional valve between the pressure device, through the inlet pressure of gas proportional valve control pressure supply device, air feeder output air current, through supply to press the device to supply the back, output pressure wave, through test pipeline transmission to the station that awaits measuring.
According to the scheme, the air flow is generated through the air supply device, the pressure is supplied to the pressure supply device, the overflow valve is tested from the test pipeline to the station of the workpiece to be tested, and the air pressure of the input air flow can be adjusted through the air proportional valve, so that the test pressure of the controllable boosting rate is output, and the test precision is guaranteed.
Further, the overflow valve calibration stand, wherein, the pressure supply device includes a low pressure supply device, a medium pressure supply device and a high pressure supply device that are arranged in sequence.
According to the scheme, the low-pressure test, the medium-pressure test and the high-pressure test are realized through the low-pressure supply device, the medium-pressure supply device and the high-pressure supply device, and different overflow valve checking test requirements are met.
Further, overflow valve check table, wherein, low pressure supplies pressure equipment to be equipped with the overhead tank, middling pressure supplies pressure equipment to be equipped with the middling pressure booster pump, high pressure supplies pressure equipment to be equipped with the high-pressure booster pump, the overhead tank is equipped with the low pressure test stop valve, middling pressure booster pump and high-pressure increase pump are equipped with middling pressure pump switch and high-pressure pump switch respectively.
According to the scheme, the low-pressure fluid output is realized through the pressure tank and the low-pressure test stop valve, the medium-pressure fluid output is realized through the medium-pressure booster pump and the medium-pressure pump switch, the high-pressure fluid output is realized through the high-pressure booster pump and the high-pressure pump switch, the measuring precision is further guaranteed, the measuring range is enlarged, and the applicability is improved.
Further, the overflow valve calibration stand, wherein a pressure testing device is arranged between the station of the piece to be tested and the pressure supply device, and the pressure testing device is used for detecting the pipeline pressure in the testing pipeline.
According to the scheme, for convenience of pressure regulation control, pipeline pressure in the test pipeline is tested through the pressure testing device, and therefore the gas proportional valve can adjust the gas pressure of the input gas flow, and the testing precision is guaranteed.
Further, overflow valve check table, wherein, pressure measurement includes manometer, pressure transmitter and low-range pressure transmitter, low-range transmitter position department is equipped with low-range transmitter switch.
According to the above technical scheme of this application, in order to satisfy different test demands, pressure measurement device corresponds with supplying pressure device, including low-range pressure transmitter, pressure transmitter and manometer, supplies pressure device, high pressure with low pressure and supplies pressure device, high pressure to supply pressure device to correspond, and the pressure in the measurement pipeline is because low-range pressure transmitter's measuring range is less, consequently when carrying out the low pressure test, just opens, through low-range transmitter on-off control.
Further, the overflow valve calibration stand is characterized in that a pressurizing stop valve is arranged between the pressure supply device and the station of the part to be tested.
According to the scheme, pressure balance and easy to assemble and dismantle in order to guarantee the pipeline are preferred the pressure supply device with await measuring and be equipped with the pressurization stop valve between the piece station.
Further, the overflow valve calibration stand is characterized in that an unloading valve is arranged between the pressurization stop valve and a station of the part to be tested.
According to the scheme, initialization is conveniently achieved after testing is completed, the pressure relief valve is preferably arranged between the pressurization stop valve and the station of the part to be tested, and after testing is completed, the pressure relief valve is opened to unload the system, namely pressure relief.
Furthermore, the overflow valve calibration stand further comprises a control device, and the control device is connected with the gas proportional valve, the pressure gauge, the pressure transmitter, the low-range pressure transmitter and the unloading valve.
According to the scheme, the control device is connected with the gas proportional valve, the pressure gauge, the pressure transmitter, the low-range pressure transmitter and the unloading valve, signals of the pressure gauge, the pressure transmitter and the low-range pressure transmitter can be acquired, the signals are compared with test requirements, the air pressure of the gas proportional valve is automatically adjusted, and after the test is completed, the unloading valve is automatically controlled to be opened, so that automation is realized.
Further, the overflow valve calibration stand is characterized in that an overflow valve is arranged between the medium-pressure supply device and the high-pressure supply device.
According to the scheme, the medium-pressure supply device and the high-pressure supply device are both pump bodies, so that the medium-pressure booster pump is ensured to be safe, high-pressure fluid is prevented from entering the medium-pressure booster pump to cause damage, and the medium-pressure supply device and the high-pressure supply device are provided with the overflow valve.
Furthermore, the overflow valve calibration stand is provided with 1 or more stations to be tested, a test stop valve is arranged on the stations to be tested, and the test stop valve controls the calibration test of the pieces to be tested to be opened or closed.
According to the scheme, by arranging the plurality of stations for the workpieces to be tested, when the overflow valve on one station for the workpieces to be tested is subjected to verification testing, other overflow valves are installed on other stations for the workpieces to be tested, and when the appointed overflow valve is required to be tested, the test stop valve on the corresponding station for the workpieces to be tested is only required to be opened.
The beneficial effect of this application above-mentioned scheme includes:
1. the method has wide coverage range and can be used for checking all hydraulic overflow valves installed in the wellhead control panel;
2. multi-station, efficiency is improved;
3. the pressure transmitter has high precision and is used for component range testing; the testing precision is high;
4. the electric proportional control has high automation degree, reduces the labor intensity and reduces the influence of manual operation on the test result;
5. and (4) automatically recording test results and storing the test results in a database.
To sum up, the application discloses overflow valve check table, wherein, including the workpiece station that awaits measuring, with the test pipeline that awaits measuring the workpiece station connection, the test pipeline with supply to press the device to be connected, supply to press the device to be connected with air feeder, air feeder with supply to be equipped with the gas proportional valve between the pressure device, through the inlet pressure of gas proportional valve control pressure supply device, air feeder output air current, through supply to press the device to supply to press the back, the output pressure wave transmits to the workpiece station that awaits measuring through the test pipeline, this application overflow valve check table carries out pressure test, convenient operation, and test accuracy is high from test pipeline conveying pressure wave to the workpiece station that awaits measuring overflow valve through air feeder and supply to press the device.
Drawings
FIG. 1 is a schematic structural diagram of an overflow valve calibration stand according to the present application.
Reference numerals: 1. a workpiece to be detected station; 11. testing the stop valve; 2. testing the pipeline; 3. a pressure supply device; 31. a low pressure supply device; 311. a pressure tank; 312. a low-pressure test stop valve; 32. a medium pressure supply device; 321. a medium pressure booster pump; 322. a medium pressure pump switch; 33 high-pressure supply means; 331. a high-pressure booster pump; 332. a high pressure pump switch; 34. an overflow valve; 4. a gas supply device; 5, a gas proportional valve; 6. a pressure testing device; 61. a pressure gauge; 62. a pressure transmitter; 63. a low range pressure transmitter; 631. a low range transmitter switch; 7. a pressurization stop valve; 8. an unloading valve; 9. and a control device.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1, for the structural schematic diagram of an overflow valve check table of this application, this application discloses an overflow valve check table can realize the performance test check to the overflow valve, including a station 1, test pipeline 2, air feeder 4, pressure supply device 3 and gas proportional valve 5 that await measuring, wherein, the overflow valve that awaits measuring is installed await measuring on the station 1, air feeder 4 output air current to pressure supply device 3, pressure supply device 3 can pressurize or steady voltage the air current, the air current atmospheric pressure that air feeder 4 exported also can be adjusted, through gas proportional valve 5 adjustment output air current, the air current is followed after supplying pressure device 3 pressurization or steady voltage test pipeline 2 output extremely the station 1 that awaits measuring is connected with the overflow valve that awaits measuring, can test the performance of the overflow valve that awaits measuring.
In the foregoing solution, it is mentioned that the air flow can pass through the pressure supply device 3 to provide pressure, and the pressure can be stabilized to be pressurized, so as to test overflow valves with different performances conveniently, in this application, the pressure supply device 3 includes a plurality of pressure supply devices 31, a medium pressure supply device 32 and a high pressure supply device 33, and after the air flow passes through the pressure supply device 3, the air flow meets the test requirements of low pressure, medium pressure and high pressure, in this application, specifically, the low pressure supply device 31 is provided with a pressure tank 311, the medium pressure supply device 32 is provided with a medium pressure booster pump 321, the high pressure supply device 33 is provided with a high pressure booster pump 331, correspondingly, a low pressure test stop valve 312, a medium pressure pump switch 322 and a high pressure pump switch 332 are further provided, when the air flow passes through each pressure supply device 3, the low pressure fluid, the medium pressure fluid and the high pressure fluid are respectively output, and the medium pressure booster pump 321 and the high, also called gas drive liquid booster pump. The pneumatic booster pump drives a large area piston end with low pressure gas, thereby producing high pressure fluid at a small area piston end. When the pneumatic booster pump works, the pneumatic booster pump rapidly reciprocates, and the reciprocating speed of the pump is reduced until the pump stops along with the fact that the output pressure is close to the set pressure value. And maintains this pressure with little energy consumption, no heat generation, and no part motion. When the pressure balance is broken, the pneumatic booster pump automatically starts to work to the next balance, and the pressure of the loop is kept constant. The output pressure and flow rate of the pneumatic booster pump are accurately regulated by a pressure regulating valve for driving gas.
In the present application, the pressure is provided to the air flow by the pressure supply device 3, and in order to meet the test requirement, the pressure of the finally output fluid needs to meet the test condition, therefore, the output fluid pressure needs to be sensed to pressurize in the event of an insufficient pressure, and in a preferred embodiment, the overflow valve checking table is also provided with a pressure testing device 6 which is arranged on the testing pipeline 2 and is used for testing the overflow valve when the overflow valve checking table is in a working position 1, the fluid pressure is tested, and as the test performance comprises the tests of low pressure, medium pressure and high pressure in different measuring ranges, preferably, therefore, the pressure supply means 3 comprises a pressure gauge 61, a pressure transmitter 62, and a low range pressure transmitter 63, in order to prevent the low-range pressure transmitter 63 from being damaged when the pressure is high, a low-range transmitter switch 631 is preferably arranged at the position of the low-range transmitter and is opened when the low-range overflow valve needs to be tested.
This application each device equipment forms, and for test stability, it is preferred supply to press device 3 and await measuring to be equipped with pressurization stop valve 7 between the piece station 1, for example, when testing, close pressurization stop valve 7, pressurize, after the pressure stability in test pipeline 2, open pressurization stop valve 7, can guarantee that pipeline pressure is stable.
In this application, owing to can realize the overflow valve test of multiple performance, different overflow valves, the test demand is different, and the pressure in the test pipeline 2 is different, consequently, when testing at every turn, needs similar initialized flow, avoids the intraductal pressure interference next test of the previous time, this application preferred embodiment, be equipped with unloading valve 8 between pressurization stop valve 7 and the workpiece to be tested station 1, after the test at every turn, open unloading valve 8 and to the pressure off-load of test pipeline 2.
In the present application, further, in order to realize automatic control, after the pressure gauge 61, the pressure transmitter 62 and the low-range pressure transmitter 63 obtain the pressure in the testing pipe 2, in order to adjust the pressure in the pipe to meet the test requirement, the device also comprises a controller which is connected with the pressure gauge 61, the pressure transmitter 62 and the low-range pressure transmitter 63, the controller is also connected with the gas proportional valve 5 and can adjust the gas pressure of the gas flow output by the gas proportional valve 5 to enable the pressure in the pipe to reach the test requirement, the control device 9 is also connected with the unloading valve 8, after the test is finished, the unloading valve 8 is automatically opened for unloading, and in order to further package the safety of the whole checking table, a relief valve 34 is provided between the medium pressure supply device 32 and the high pressure supply device 33 to prevent the high pressure fluid of the high pressure supply device 33 from entering the medium pressure supply device 32 and causing damage.
In this application, in order to realize the test of a plurality of overflow valves that await measuring, it is preferred piece station 1 that awaits measuring is equipped with a plurality ofly to be equipped with test stop valve 11 on the piece station 1 that awaits measuring, can be when one of them overflow valve tests, other overflow valves of installation save latency, and a plurality of overflow valves are installed the back, can pass through the test stop valve 11 control is awaited measuring opening or closing of the check-up test of piece.
The following examples illustrate the embodiments described in the present application. The overflow valve check table comprises a pressure tank 311, a medium-pressure booster pump 321 and a high-pressure booster pump 331, wherein an overflow valve is installed between the medium-pressure booster pump 321 and the high-pressure booster pump 331, and the medium-pressure booster pump 321 cannot be damaged during high-pressure pressurization. The pressure tank 311 may output a low pressure of up to 130 psi; the medium-pressure booster pump 321 can output medium-pressure of 6000psi at maximum; the high-pressure booster pump 331 can output a maximum high-pressure of 30000 psi; when checking the low, medium and high pressure, only the corresponding stop valve, medium pressure pump switch 322 and high pressure pump switch 332 need to be opened. The test pressure is controlled by a gas proportional valve 5, and is detected by a high-level pressure transmitter, a middle-level pressure transmitter and a low-level pressure transmitter in a component process. A plurality of stations to set up test stop valve 11, other station clamping test piece when can guarantee a station test improves detection efficiency.
In this application, the piece to be measured is the overflow valve, also called the relief valve, and the safety overflow valve plays the safety protection effect in the system. When the system pressure exceeds the specified value, the safety valve is opened, and a part of fluid in the system is discharged, so that the system pressure does not exceed the allowable value, and the system is ensured not to have accidents due to overhigh pressure.
The overflow valve calibration console is mainly used for realizing performance test of an overflow valve, namely detection of the safety valve, namely testing of set pressure (also called opening pressure) and resealing pressure. The set pressure is the upstream pressure at which fluid first exits. The resealing pressure is the upstream pressure at which no fluid is flowing.
In the preferred embodiment of the present application, the specific test method is as follows: after pressurizing to 90% of the set pressure, slowly increasing the pressure at a rate not exceeding 0.01MPa/s until the valve is opened. The pressure at the time of opening is the set pressure; and (3) stopping pressurizing, stabilizing the overflow valve at a certain pressure finally, observing for 5 minutes, and enabling the value to be stable and not to fall, wherein the value is the 'resealing pressure'. Repeating for 3-5 times.
In the preferred embodiment of the application, the low-voltage test, the medium-voltage test and the high-voltage test respectively correspond to different test pieces; the three tests are mutually incoherent:
low pressure (within 130 psi) test using 1:1 gas drive tank for pressure supply:
after the test piece is installed, opening the low-pressure transmitter and the low-pressure transmitter isolation valve, opening the test stop valve 11, and opening the pressurization stop valve 7; setting a gas pressure increasing and decreasing waveform on the control device 9, and setting the output pressure of the gas proportional valve 5; and (3) opening the gas supply device 4, opening the low-pressure test stop valve 312, enabling the gas pressure to act on the upper part of the pressure tank 311, outputting the hydraulic pressure which is the same as the gas at the lower part of the pressure tank 311 according to the ratio of 1:1, and acquiring the pressure value by the pressure transmitter and displaying the pressure value on a display screen of a computer control system in real time.
In the low-pressure test, the test pressure is controlled by a gas proportional valve 5. It is not necessary to activate the medium-pressure booster pump 321 and the high-pressure booster pump 331 at this time, and these pumps serve only as fluid passages with check valves.
The medium-pressure (6000 psi) test adopts a medium-pressure booster pump 321 for pressure supply:
and during the middle-high pressure test, the pressure in the pressure oil tank is discharged to be 0. The output pressure control is realized through the principle of gas-liquid balance. According to the pressurization proportion of the medium-pressure booster pump 321, firstly, a driving gas pressure waveform is set on a software interface of the control device 9, the output pressure of the electric proportional valve is set, the set pressure is compared with the feedback value of the pressure transmitter, the output pressure can be infinitely close to the set pressure value through the accurate control of the electric proportional valve and the computer control system, and therefore the required test pressure is output.
The electric proportional valve can automatically adjust the boost rate.
After the test is finished, the unloading valve 8 is opened to unload the system pressure.
The high pressure (30000 psi) test adopts a high pressure booster pump 331 for pressure supply:
according to the pressurization proportion of the high-pressure booster pump 331, firstly, a driving gas pressure waveform is set on a software interface of the control device 9, the output pressure of the electric proportional valve is set, the set pressure is compared with a feedback value of the pressure transmitter, the output pressure can be infinitely close to the set pressure value through the accurate control of the electric proportional valve and the computer control system, and therefore the required test pressure is output.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides an overflow valve check table, its characterized in that, includes a station (1) that awaits measuring, with test pipeline (2) that awaits measuring station (1) is connected, test pipeline (2) with supply to press device (3) to be connected, supply to press device (3) to be connected with air feeder (4), air feeder (4) with supply to be equipped with gas proportional valve (5) between pressing device (3), through gas proportional valve (5) control supplies the admission pressure of pressing device (3), air feeder (4) air output, through supply to press device (3) to supply to press the back, output pressure wave transmits to a station (1) that awaits measuring through test pipeline (2).
2. The overflow valve calibration stand according to claim 1, wherein the pressure supply device (3) comprises a low pressure supply device (31), a medium pressure supply device (32) and a high pressure supply device (33) which are arranged in sequence.
3. The overflow valve calibration stand according to claim 2, wherein the low pressure supply device (31) is provided with a pressure tank (311), the medium pressure supply device (32) is provided with a medium pressure booster pump (321), the high pressure supply device (33) is provided with a high pressure booster pump (331), the pressure tank (311) is provided with a low pressure test stop valve (312), and the medium pressure booster pump (321) and the high pressure booster pump (331) are respectively provided with a medium pressure pump switch (322) and a high pressure pump switch (332).
4. The overflow valve calibration stand according to claim 2, characterized in that a pressure testing device (6) is arranged between the workpiece to be tested station (1) and the pressure supply device (3), and the pressure testing device (6) is used for detecting the pipeline pressure in the testing pipeline (2).
5. The overflow valve check bench of claim 4, characterized in that the pressure detection device (6) comprises a pressure gauge (61), a pressure transmitter (62) and a low-range pressure transmitter (63), and a low-range transmitter switch (631) is arranged at the position of the low-range transmitter (63).
6. The overflow valve calibration stand according to claim 5, characterized in that a pressurization stop valve (7) is arranged between the pressure supply device (3) and the work station (1) of the piece to be tested.
7. The overflow valve calibration stand according to claim 6, characterized in that an unloading valve (8) is arranged between the pressurization stop valve (7) and the workpiece station (1) to be tested.
8. The overflow valve calibration stand of claim 5, further comprising a control device (9), wherein the control device (9) is connected with the gas proportional valve (5), the pressure transmitter (62) of the pressure gauge (61), the low-range pressure transmitter (63) and the unloading valve (8).
9. The overflow valve calibration stand of claim 3, wherein an overflow valve (34) is arranged between the medium-pressure supply device (32) and the high-pressure supply device (33).
10. The overflow valve checking table according to claim 1, wherein 1 or more work stations (1) of the piece to be tested are provided, a test stop valve (11) is arranged on the work station (1) of the piece to be tested, and the test stop valve (11) is used for controlling the opening or closing of the checking test of the piece to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629996.4A CN112729724A (en) | 2020-12-30 | 2020-12-30 | Overflow valve calibration stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629996.4A CN112729724A (en) | 2020-12-30 | 2020-12-30 | Overflow valve calibration stand |
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| CN112729724A true CN112729724A (en) | 2021-04-30 |
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| CN202011629996.4A Pending CN112729724A (en) | 2020-12-30 | 2020-12-30 | Overflow valve calibration stand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820074A (en) * | 2021-11-22 | 2021-12-21 | 日照朝力信息科技有限公司 | Split testing equipment and testing method for sealing performance of overflow valve |
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| CN104729840A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Safety valve testing device and method |
| CN205262717U (en) * | 2015-11-02 | 2016-05-25 | 绵阳富临精工机械股份有限公司 | Check valve capability test system |
| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
| CN206378287U (en) * | 2017-01-24 | 2017-08-04 | 江西省华东特种气体有限公司 | A kind of multi-functional safety valve test device |
| 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 |
| CN206930440U (en) * | 2017-07-19 | 2018-01-26 | 上海德尔格医疗器械有限公司 | A kind of test device of safety valve |
| CN108362489A (en) * | 2018-03-27 | 2018-08-03 | 河南省铭澳特种设备检测有限公司 | A kind of versatile testing device of safety valve |
| CN209326972U (en) * | 2019-03-20 | 2019-08-30 | 山东省医疗器械产品质量检验中心 | A kind of safety valve device for measuring properties |
| CN111257105A (en) * | 2020-03-30 | 2020-06-09 | 西安长庆科技工程有限责任公司 | Pressure monitoring control test system with multiple stations |
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| CN113820074A (en) * | 2021-11-22 | 2021-12-21 | 日照朝力信息科技有限公司 | Split testing equipment and testing method for sealing performance of overflow valve |
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