CN101776509A - Pressure resistance detecting device for petroleum underground tool - Google Patents
Pressure resistance detecting device for petroleum underground tool Download PDFInfo
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- CN101776509A CN101776509A CN201010004735A CN201010004735A CN101776509A CN 101776509 A CN101776509 A CN 101776509A CN 201010004735 A CN201010004735 A CN 201010004735A CN 201010004735 A CN201010004735 A CN 201010004735A CN 101776509 A CN101776509 A CN 101776509A
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Abstract
The invention discloses a pressure resistance detecting device for a petroleum underground tool, which is used for detecting the pressure resistance and the sealing property of an underground tool used in the petroleum drilling industry and overcomes the defects of long test period of the existing technical equipment, test well drilling need and high cost. A pressurization system is used for pressurizing by adopting gas-drive liquid. The device is characterized in that the pressurization system consists of a gas-drive liquid pump, a gas-drive loop and a liquid loop. The liquid loop consists of a low-pressure water (or hydraulic oil) loop, a high-pressure water (or hydraulic oil) loop, an exhaust pressure-releasing loop and a safety control loop. The test system pressure is continuously adjusted through a proportional valve (4); and the proportional control signal of a proportional pressure-reducing valve is controlled by a computer. The test process can fully-automatically operate or can be manually operated. The device can test a to-be-tested tool with ports at two ends, and also can test a to-be-tested tool with a port at one end.
Description
Technical field:
The present invention relates to a kind of withstand voltage properties checkout equipment that bears high tension apparatus, the withstand voltage properties pick-up unit of subsurface tool in particularly a kind of petroleum drilling and mining industry mainly solves withstand voltage properties and the sealing property of subsurface tool before going into the well and detects problem.
Background technology:
In the petroleum drilling and mining operation, the load that subsurface tool bears is quite complicated, comprises torsional load, Tensile or Compressive Loading, shock load, fluid pressure etc.Therefore, in the process of development subsurface tool and before subsurface tool goes into the well, must test its every performance index.The existing subsurface tool test macro of China needs to beat experiment well, experimental facilities complexity, cost height at present.It as the patent No. 00108834.3 patent, a kind of downhole tool performance testing device is disclosed, this device is made up of portable charger, experiment well and the well head coupling arrangement etc. that are installed on the ground rail, can test and estimate the single index and the combination property of subsurface tool.But its test period is long, cost is high, is suitable for the performance test of subsurface tool in the research and development of products stage.
Intensification along with drilling depth, especially the deep-well that surpasses 5000m at well depth, its bottomhole wellbore pressure reaches more than the 100MPa especially, under so high pressure, the withstand voltage properties of subsurface tool and the quality of sealing property just seem quite important, need to change in case quality problems appear in subsurface tool, the time of its cost, material resources and financial resources are quite huge.Therefore, before subsurface tool is gone into the well, must test and estimate its combination property.After the material of subsurface tool, physical dimension were determined, its strength and stiffness had also just been decided, so its antitorque commentaries on classics, tension are pressed, shock proof ability has also been decided substantially.
But for the withstand voltage properties and sealing property of subsurface tool, because processing and manufacturing, the size of each part all has difference, cooperates with the part that is attached thereto again, and the withstand voltage properties of its cooperation place and sealing property also just have difference.And in order to guarantee that each part subsurface tool compressive resistance is enough, good airproof performance, to work reliably, must carry out the test of withstand voltage properties and sealing property, the work of can going into the well after qualified to each part subsurface tool.
In the face of kind, subsurface tool that specifications and models are various, as also testing with traditional equipment, its test period is long, and efficient is low, expense is high, far can not satisfy subsurface tool is carried out the requirement that a hundred per cent is tested.For guaranteeing the reliability and the correctness of test data, must the air in the testing tool be discharged in test process on the other hand, all adopt artificial on-the-spot exhaust release at present, this is breakneck under the Hi-pot test situation.Therefore design a kind ofly can carry out accurately the withstand voltage properties and the sealing property of subsurface tool, the pick-up unit of fast detecting has important practical significance.
Summary of the invention:
The objective of the invention is: in order to solve tool performance pick-up unit under the existing well, when the subsurface tool withstand voltage properties is detected, need to beat problems such as test pit, system complex, test period length, cost height, provide a kind of and can fast, accurately detect the withstand voltage properties of subsurface tool and the low-cost pick-up unit of sealing property.
The technical solution adopted for the present invention to solve the technical problems is: in the pressure testing process, in order to guarantee the safety of operating personnel and various electrical apparatus control equipments, operating console and the pressure charging system with certain risk are separated, operating console is arranged in the special pulpit, and pressure charging system is arranged in test site.All pressure signal lines and control signal wire in the pressure charging system are connected to the pulpit by the aviation socket, and instrument to be measured scene is equipped with camera, and passes signal back pulpit, comes the situation of on-site supervision by monitoring screen in the pulpit.With the high-pressure hose that has hydraulic quick coupler with pressure charging system with after instrument to be measured is connected, all test jobs and data recording work all can be finished in the pulpit.Pressure charging system adopts the gas drive liquid booster pump, and the actuating medium of pressure testing is clear water (or hydraulic oil).Utilize low pressure and mass flow pump of compressed air-driven that instrument to be measured is carried out water filling (or hydraulic oil), another high-pressure low-flow pump carries out supercharging to actuating medium, and the pressure of actuating medium is increased to about 140MPa.The output pressure of pressure charging system can be regulated continuously by proportional pressure-reducing valve.Pressure charging system is provided with high pressure water outlet interface and low pressure delivery interface, and the interface with instrument to be measured two ends links to each other respectively.In the pressure testing process, the low pressure and mass flow pump is finished pressure test tool is carried out water filling, after water is annotated certain pressure, automatically the air in the subsurface tool is carried out 2～3 exhausts by the gas control high pressure needle valve.Exhaust finishes, and gas drive low pressure and mass flow pump quits work automatically, and the high-pressure low-flow pump is started working simultaneously, and testing tool is carried out supercharging, and when being pressurized to the pressure testing value of setting, the high-pressure low-flow pump quits work automatically.Utilize retaining valve to carry out pressurize, the dwell time is determined by artificial input by computing machine.Pressurize finishes, and system opens the gas control high pressure needle valve automatically and makes its release, finishes the test to a subsurface tool.
If instrument to be measured has only an end that interface (other end does not have interface) is arranged, this moment is by switching two high-pressure stop valves of pressure charging system inside, the outlet pipeline of low-lift pump is directly linked to each other with the outlet pipeline of high-pressure pump in pressure charging system inside, receive the Inlet and outlet water interface of instrument to be measured then.
The invention has the beneficial effects as follows: can before going into the well, test its withstand voltage properties and sealing property quickly and accurately subsurface tool, must not beat test pit, cost is low, test period is short, and can pass through its test figure of computer recording, for making objective judgement to the performance of product, the staff provides scientific basis.Simultaneously, whole test process all can be finished in the pulpit, has ensured tester's personal safety.
Description of drawings:
Fig. 1 is the boost-up circuit schematic diagram of pressure resistance detecting device for petroleum underground tool
Fig. 2 all has the test job schematic diagram of Inlet and outlet water interface for oil subsurface tool two ends
Fig. 3 only has the test job schematic diagram of an interface for the oil subsurface tool
Fig. 4 is a full-automatic testing control module process flow diagram of the present invention
Fig. 5 is a manual test control module process flow diagram of the present invention
Embodiment:
As shown in Figure 1, the gas drive liquid boost-up circuit schematic diagram of pressure resistance detecting device for petroleum underground tool comprises compressed air inlet (1), gas circuit stop valve (2), air strainer (3), proportional pressure-reducing valve (4), gas pressure sensor (5), gas gauge (6), gas safety valve (7), bi-bit bi-pass solenoid directional control valve (8), bi-bit bi-pass solenoid directional control valve (9), high pressure gas drive liquid pump (10), low pressure gas drive liquid pump (11), two-position three way solenoid directional control valve (12), gas control high pressure needle valve (13), water under high pressure pressure transducer (14), water under high pressure tensimeter (15), high pressure retaining valve (16), water under high pressure safety overflow valve (17), tap water interface (18), water route stop valve (19), water filter (20), water stop valve (21), water tank (22), low-pressure water pressure transducer (23), low-pressure water tensimeter (24), high pressure retaining valve (25), water under high pressure stop valve (26), water under high pressure stop valve (27), exhaust/spilling water interface (28), high pressure water outlet interface (29), low pressure delivery interface (30).Described schematic diagram comprises gas drive loop, water (or hydraulic oil) loop of pressure testing system.
The compressed air intake of pressurized air (1) inserts in the described gas drive loop, link to each other with air strainer (3) through gas circuit stop valve (2), reduce pressure through proportional pressure-reducing valve (4) again, be divided into three branch roads then, article one, branch road links to each other with high pressure gas drive liquid pump (10) through bi-bit bi-pass solenoid directional control valve (8), the second branch road links to each other with low pressure gas drive liquid pump (11) through bi-bit bi-pass solenoid directional control valve (9), and the 3rd branch road links to each other with gas control high pressure needle valve (13) through two-position three way solenoid directional control valve (12).Driving pressure is set up by proportional pressure-reducing valve (4), and is detected and the closed-loop control of input computing machine formation by gas pressure sensor (5), and this pressure shows on computers in real time, is indicated by gas gauge (6) simultaneously.
The water of described pressure testing system (or hydraulic oil) loop comprises into water (or hydraulic oil) loop, low pressure liquid loop, highly pressurised liquid loop, exhaust/depressurized circuit and security control loop.
The tap water in described water inlet loop inserts through tap water interface (18), go into water filter (20) through water stop valve (19) is laggard, divide three branch roads then, article one, branch road flows into water tank (22) storage behind water stop valve (21), in order to when tap water cut-off for system's urgent need (in use during oily medium, water tank (22) is used for storing hydraulic oil), another branch road enters the inlet of high pressure gas drive liquid pump (10), and the 3rd branch road enters the inlet of low pressure gas drive liquid pump (11).
Described low pressure liquid loop is from the outlet of low pressure gas drive liquid pump (11), and behind high pressure retaining valve (25) and water under high pressure stop valve (27), to low pressure delivery interface (30), an end interface last and on the instrument to be measured links to each other.
Described highly pressurised liquid loop is from the outlet of high pressure gas drive liquid pump (10), and behind high pressure retaining valve (16), to high pressure water outlet interface (29), other end interface last and on the instrument to be measured links to each other.
Described exhaust/depressurized circuit and security control loop; be between the high pressure retaining valve (16) and high pressure water outlet interface (29) of high pressure water loop one side; be connected to gas control high pressure needle valve (13) and high-voltage safety surplus valve (17); open gas control needle-valve (13) by two-position three way solenoid directional control valve (12); can discharge the residual air in the instrument to be measured; perhaps in the pressurize laggard horizontal high voltage release that finishes, high-voltage safety surplus valve (17) is used for system is carried out safeguard protection.
Embodiment 1:
As shown in Figure 2, all there is the Inlet and outlet water interface at the subsurface tool two ends, and wherein an end of subsurface tool (31) connects low pressure delivery interface (30), and the other end connects high pressure water outlet interface (29).Before the test, an end that at first subsurface tool (31) is connect high pressure water outlet interface (29) is raised, and opens gas circuit stop valve (2), water stop valve (19), high-pressure stop valve (27) then, closes water stop valve (21) and high-pressure stop valve (26).
Test process is as follows: after pressurized air is introduced from air intake (1), behind gas circuit stop valve (2) and air strainer (3), the proportional pressure-reducing valve (4) of the machine control setting value that reduces pressure as calculated again, computing machine signals and connects solenoid directional control valve (9), pressurized air enters low pressure gas drive liquid pump (11), this pump is realized autonomous to-and-fro movement under compressed-air actuated effect, successively tap water is delivered in the low tension loop, pass through high pressure retaining valve (25) and water under high pressure stop valve (27) then, end from test specimen to be measured flows at last, and this process is a injecting process.Pressure in the injecting process is shown by low-pressure water tensimeter (24), detect by low-pressure water pressure transducer (23) simultaneously and feed back to computing machine, when force value reaches the low pressure setting value, computing machine signals and connects two-position three way solenoid directional control valve (12), pressurized air is opened gas control high pressure needle valve (13) and is carried out exhaust 2～3 times, after the instrument fills with water, solenoid directional control valve (12) dead electricity, gas control high pressure needle valve (13) is closed, while solenoid directional control valve (9) dead electricity, cut off the gas drive loop, low pressure gas drive liquid pump (11) quits work.Meanwhile, solenoid directional control valve (8), high pressure gas drive liquid pump (10) starts, to instrument water supply supercharging, boost pressure is indicated by water under high pressure tensimeter (15), and is fed back to computing machine and shown numerical value by water under high pressure pressure transducer (14) detection in real time, when reaching the supercharging setting value, make solenoid directional control valve (8) dead electricity, enter packing stage.In the pressure maintaining period, if pressure is reduced to setting when following, solenoid directional control valve (8) again electric, carry out ftercompction by high pressure gas drive liquid pump (10), enter packing stage after ftercompction finishes again.Dwell time finishes, and solenoid directional control valve (12) gets electric, and gas control high pressure needle valve (13) is opened and carried out release, finishes the test to an instrument.
Embodiment 2:
As shown in Figure 3, subsurface tool only has an end that the Inlet and outlet water interface is arranged, at first subsurface tool (32) connecting tube one end is raised the discharge that is beneficial to air before the test, open gas stop valve (2), water stop valve (19), high-pressure stop valve (26) then, close water stop valve (21), high-pressure stop valve (27).
Its test process is as follows: after pressurized air is introduced from inlet (1), behind gas circuit stop valve (2) and air filter (3), the proportional pressure-reducing valve (4) of the machine control setting value that reduces pressure as calculated again, computing machine signals solenoid directional control valve (9) is got, pressurized air enters low pressure gas drive liquid pump (11), this pump is realized autonomous to-and-fro movement under compressed-air actuated effect, press water is through high pressure retaining valve (25) and water under high pressure stop valve (26), inject from tool interface to be measured at last, this process is a injecting process.In the injecting process, air in the instrument is compressed, low-pressure water pressure transducer (23) detects water injection pressure and gives computing machine, when water injection pressure reaches setting value, computing machine at first signals and makes solenoid directional control valve (9) dead electricity, makes gas drive liquid pump (11) stop water filling, signals then two-position three way solenoid directional control valve (12) is got, gas control high pressure needle valve (13) is opened, and compressed air is discharged through gas control high pressure needle valve (13) in the test specimen.This water filling, exhaust process can be repeated 1～3 time by computer control.When air arranged, when water is filled with, make solenoid directional control valve (12) dead electricity, gas control high pressure needle valve (13) is closed, meanwhile, solenoid directional control valve (8), high pressure gas drive liquid pump (10) starts, carry out supercharging, boost pressure is detected by water under high pressure pressure transducer (14) and feeds back to computing machine, when reaching setting value, make solenoid directional control valve (8) dead electricity, enter packing stage.In the pressure maintaining period, by the real-time monitoring pressure of water under high pressure pressure transducer (14), when pressure is reduced to setting when following, make again solenoid directional control valve (8) electric, start high pressure gas drive liquid pump (10) and carry out ftercompction, enter packing stage after ftercompction finishes again.Dwell time finishes, and it is electric that solenoid directional control valve (12) is got, and gas control high pressure needle valve (13) is opened and carried out release, finishes the test to an instrument.
Embodiment 3:
Be illustrated in figure 4 as full-automatic testing control module process flow diagram, its course of work be described below in conjunction with Fig. 2, Fig. 3 and Fig. 4.
Its workflow of full-automatic testing control module is as follows: at first carry out the initialization setting by computing machine, comprise gas drive pressure P 0, low pressure P1, high-pressure P2, water inlet a number N, dwell time T1, single head exhaust number of times M, double end evacuation time T2 are set.After initialization is finished, regulate the pressure of proportional pressure-reducing valve (4) according to the P0 value of setting, reach setting value after, judge a number N of intaking.N=1 is single head water inlet (as shown in Figure 3), and N=2 is double end water inlet (as shown in Figure 2).During as N=1, make solenoid directional control valve (9) get electric, solenoid directional control valve (12) dead electricity, the beginning water filling, judge then whether water injection pressure reaches setting value P1, with solenoid directional control valve (9) dead electricity, solenoid directional control valve (12) gets after reaching, carry out exhaust, exhaust finishes, and can repeat water filling, exhaust 1～3 time again, enters next step pressurization stages then.During as N=2, make solenoid directional control valve (9) get electric, solenoid directional control valve (12) dead electricity, the beginning water filling, judge then whether water injection pressure reaches setting value P1, make after reaching electromagnetism solenoid directional control valve (12) electric, the beginning exhaust, evacuation time T2 to after directly enter next step pressurization stages.Make solenoid directional control valve (9) dead electricity, solenoid directional control valve (12) dead electricity during supercharging, solenoid directional control valve (8) gets electric, the beginning supercharging, constantly judge whether pressure arrives the test pressure P2 of setting in the pressurization, as when reaching setting value, make solenoid directional control valve (8) dead electricity, enter packing stage.In the pressure maintaining period, drop to setting when following as pressure, allow again solenoid directional control valve (8) electricly carry out supercharging, begin pressurize when being pressurized to the P2 value again.After dwell time T1 arrives, make solenoid directional control valve (12) electricly carry out release, after release finishes, allow solenoid directional control valve (12) dead electricity, finish a workpiece test.The control of the various solenoid valves in the test process, the detection of sensor signal, data recording and demonstration can realize automatically by computing machine fully that whole test process accurately, fast, reliably.
Embodiment 4:
Fig. 5 is a manual test control module process flow diagram, and the workflow of manual control module is as follows: the first step, and at first regulate the ratio control signal of proportional pressure-reducing valve (4), thereby regulate gas drive pressure by potentiometer.Second step, press the low voltage starting button and give solenoid directional control valve (9) energising, start low pressure gas drive liquid pump (11) and carry out water filling, when water injection pressure reaches setting value P1, make solenoid directional control valve (9) dead electricity, low pressure gas drive liquid pump (11) stops water filling.In the 3rd step, by exhaust/release button, solenoid directional control valve (12) gets electric, and high pressure gas control needle-valve (13) is opened, and carries out exhaust.The 4th the step, after exhaust finishes, press the high voltage startup button, allow solenoid directional control valve (8) electric, the startup high pressure gas drive liquid pump (10) carry out supercharging, be pressurized to setting value after, make solenoid directional control valve (8) dead electricity, enter packing stage.In the 5th step, after pressurize finished, by exhaust/release button, solenoid directional control valve (12) got electric, and high pressure gas control needle-valve (13) is opened, and carries out release, finishes the test to an instrument, and whole process is control fully manually.
Claims (7)
1. pressure resistance detecting device for petroleum underground tool, it is characterized in that: pressure charging system adopts gas drive liquid pump, form by compressed air-driven loop, fluid loop, fluid loop is made up of low pressure liquid loop, highly pressurised liquid loop, exhaust loop, depressurized circuit and security control loop, System Testing Pressure is regulated by proportional pressure-reducing valve (4), and proportional pressure-reducing valve is by computer control.
2. pressure resistance detecting device for petroleum underground tool according to claim 1, it is characterized in that: the pressurized air in described gas drive loop inserts through inlet (1), connect successively through gas circuit stop valve (2), air strainer (3), proportional pressure-reducing valve (4), divide three the tunnel then, one the tunnel drives low pressure gas drive liquid pump (11) through solenoid directional control valve (9) carries out water filling, another road drives high pressure gas drive liquid pump (10) through solenoid directional control valve (8) and carries out supercharging, and Third Road carries out exhaust or release through solenoid directional control valve (12) rear drive high pressure gas control needle-valve (13).
3. pressure resistance detecting device for petroleum underground tool according to claim 1, it is characterized in that: described low pressure liquid loop is connected to form successively by low pressure gas drive liquid pump (11), high pressure retaining valve (25), water under high pressure stop valve (27), is connected to low-pressure water pressure transducer (23) and low-pressure water tensimeter (24) between the outlet of low pressure gas drive liquid pump (11) and high pressure retaining valve (25).
4. pressure resistance detecting device for petroleum underground tool according to claim 1, it is characterized in that: described highly pressurised liquid loop is connected successively by high pressure gas drive liquid pump (10), high pressure retaining valve (16), high pressure water outlet interface (29), is connected to water under high pressure pressure transducer (14) and water under high pressure tensimeter (15) between high pressure retaining valve (16) and high pressure water outlet interface (29).
5. pressure resistance detecting device for petroleum underground tool according to claim 1, it is characterized in that: described exhaust, depressurized circuit are finished exhaust or release by high pressure gas control needle-valve (13), one end of high pressure gas control needle-valve is connected between high pressure retaining valve (16) and the high pressure water outlet interface (29), and the other end links to each other with exhaust/spilling water interface (28).
6. pressure resistance detecting device for petroleum underground tool according to claim 1, it is characterized in that: described security control loop is finished by high-voltage safety surplus valve (17), water inlet one end of high-voltage safety surplus valve is connected between high pressure retaining valve (16) and the high pressure water outlet interface (29), and the other end links to each other with exhaust/spilling water interface (28).
7. pressure resistance detecting device for petroleum underground tool according to claim 1, it is characterized in that: be provided with water under high pressure stop valve (27) on the low pressure liquid loop, the path between low pressure liquid loop and the highly pressurised liquid loop is provided with water under high pressure stop valve (26).
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| CN201010004735A CN101776509A (en) | 2010-01-14 | 2010-01-14 | Pressure resistance detecting device for petroleum underground tool |
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| CN201010004735A CN101776509A (en) | 2010-01-14 | 2010-01-14 | Pressure resistance detecting device for petroleum underground tool |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123309A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | Pressurization system used for detecting internal-pressure resistance of ceramic tube |
| CN103439136A (en) * | 2013-09-18 | 2013-12-11 | 东营市产品质量监督检验所 | 2000 T full-size petroleum pipeline and well-control equipment comprehensive testing platform |
| CN105890971A (en) * | 2014-10-09 | 2016-08-24 | 中国科学院地质与地球物理研究所 | Rock fracture seepage continuous servo liquid feeding device |
| CN105928693A (en) * | 2016-04-25 | 2016-09-07 | 西南石油大学 | Test device for detecting blowout preventer turn-off performance |
| CN106017824A (en) * | 2016-05-10 | 2016-10-12 | 童孝波 | Pressure resistance testing method of boiler |
| CN108037014A (en) * | 2017-12-08 | 2018-05-15 | 北京强度环境研究所 | A kind of multimedium ultralow pressure pressure-loaded pilot system |
| CN109900557A (en) * | 2019-04-15 | 2019-06-18 | 南通三责精密陶瓷有限公司 | A kind of high pressure resistant test device of ceramics tubing and method |
| CN113731965A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Device for processing a hydraulic vehicle brake system |
| CN113740552A (en) * | 2021-09-03 | 2021-12-03 | 中国工程物理研究院材料研究所 | Sampling system with gas distribution function |
| CN114183133A (en) * | 2021-12-14 | 2022-03-15 | 四川航天烽火伺服控制技术有限公司 | Pneumatic wellhead pressure pulse signal generating device and oil exploitation equipment |
| CN116148082A (en) * | 2023-04-04 | 2023-05-23 | 盐城市质量技术监督综合检验检测中心(盐城市产品质量监督检验所) | Pressure resistance detection device and method for petroleum downhole tool |
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2010
- 2010-01-14 CN CN201010004735A patent/CN101776509A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123309A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | Pressurization system used for detecting internal-pressure resistance of ceramic tube |
| CN103439136A (en) * | 2013-09-18 | 2013-12-11 | 东营市产品质量监督检验所 | 2000 T full-size petroleum pipeline and well-control equipment comprehensive testing platform |
| CN103439136B (en) * | 2013-09-18 | 2015-12-23 | 东营市产品质量监督检验所 | The full-scale oil pipeline of 2000T, well-control equipment all-around test stand |
| CN105890971B (en) * | 2014-10-09 | 2019-08-23 | 中国科学院地质与地球物理研究所 | The continuous servo liquid feed device of rock fracture seepage flow |
| CN105890971A (en) * | 2014-10-09 | 2016-08-24 | 中国科学院地质与地球物理研究所 | Rock fracture seepage continuous servo liquid feeding device |
| CN105928693A (en) * | 2016-04-25 | 2016-09-07 | 西南石油大学 | Test device for detecting blowout preventer turn-off performance |
| CN106017824A (en) * | 2016-05-10 | 2016-10-12 | 童孝波 | Pressure resistance testing method of boiler |
| CN108037014A (en) * | 2017-12-08 | 2018-05-15 | 北京强度环境研究所 | A kind of multimedium ultralow pressure pressure-loaded pilot system |
| CN109900557A (en) * | 2019-04-15 | 2019-06-18 | 南通三责精密陶瓷有限公司 | A kind of high pressure resistant test device of ceramics tubing and method |
| CN109900557B (en) * | 2019-04-15 | 2024-04-12 | 南通三责精密陶瓷有限公司 | High-pressure-resistant testing device and method for ceramic pipe |
| CN113731965A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Device for processing a hydraulic vehicle brake system |
| CN113731965B (en) * | 2020-05-29 | 2023-09-05 | 比亚迪股份有限公司 | Device for treating a hydraulic vehicle brake system |
| CN113740552A (en) * | 2021-09-03 | 2021-12-03 | 中国工程物理研究院材料研究所 | Sampling system with gas distribution function |
| CN113740552B (en) * | 2021-09-03 | 2023-08-22 | 中国工程物理研究院材料研究所 | Sample injection system with gas distribution function |
| CN114183133A (en) * | 2021-12-14 | 2022-03-15 | 四川航天烽火伺服控制技术有限公司 | Pneumatic wellhead pressure pulse signal generating device and oil exploitation equipment |
| CN116148082A (en) * | 2023-04-04 | 2023-05-23 | 盐城市质量技术监督综合检验检测中心(盐城市产品质量监督检验所) | Pressure resistance detection device and method for petroleum downhole tool |
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Application publication date: 20100714 |