CN101403669A - Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel - Google Patents

Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel Download PDF

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Publication number
CN101403669A
CN101403669A CNA2008102026301A CN200810202630A CN101403669A CN 101403669 A CN101403669 A CN 101403669A CN A2008102026301 A CNA2008102026301 A CN A2008102026301A CN 200810202630 A CN200810202630 A CN 200810202630A CN 101403669 A CN101403669 A CN 101403669A
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China
Prior art keywords
gas
container
pressure
discharging
high pressure
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CNA2008102026301A
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Chinese (zh)
Inventor
张存满
马建新
周伟
张剑
邬敏忠
潘相敏
陈华强
宫振华
高鑫
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Tongji University
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Tongji University
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Priority to CNA2008102026301A priority Critical patent/CN101403669A/en
Publication of CN101403669A publication Critical patent/CN101403669A/en
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Abstract

The invention discloses a full-automatic high-pressure container gas circular charging and discharging fatigue test system which not only can realize the full-automatic control of the high-pressure gas circular charging and discharging fatigue test but also can carry out the on-line automatic detection to the fatigue condition of the high-pressure container. The automatic control of the circular charging and discharging is realized through the dynamic response signals of a temperature sensor arranged inside the tested container, the dynamic response signals of each pressure sensor on the high-pressure pipelines and switching of solenoid valves controlled by the control strategy. The gas medium in the circular charging and discharging process can be recycled after the pressurizing by a pressure-releasing receiving tank and a gas compressor so as to avoid the gas waste and environment contamination. The dynamic fatigue states of the high-pressure container in the circular charging and discharging process are acquired through the changing of response signals of a hydrogen sensor arranged in a sealed bin of the tested container and the response signals of a strain sensor stuck to the surface of the tested container; and when the released hydrogen concentration reaches the set value or the strain of the container material exceeds the set value in the charging and discharging process, the fatigue test system is closed automatically.

Description

Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel
Technical field
The invention belongs to new energy field, relate to high-pressure gas container test macro, particularly be suitable for compound substance high pressure vessel cycle charge discharge causes under actuating medium gas (being generally fuel gas) condition torture test and detection system.
Background technology
Human main energy sources utilizes the great change of form effectively to promote the great development of human economic society on the one hand, and the environment of also mankind being depended on for existence produces material impact simultaneously.Under the dual-pressure that the in short supply day by day and environmental pollution of petroleum resources is on the rise, force people constantly to pursue the maximization of efficiency of energy utilization and minimizing of discharging.Because characteristics such as the high energy efficiency of low-carbon (LC) fuel, low emission, fuel gas will occupy more and more important position in the near future, from liquefied petroleum gas (LPG), synthesis gas from coal gasification, rock gas, finally develop into hydrogen, Hydrogen Energy will become a kind of important secondary energy as a kind of efficient, cleaning, continuable " carbon-free " energy future, will occupy critical role in the energy structure in future.
High pressure vessel is as a kind of important storage medium of gas, closely related with the development of gaseous fuel, be in the fuel cell car of research and development, demonstration phase up till now from the gas-fueled vehicles that use in a large number now, it is more and more closer to show that invariably high pressure vessel and gas economic development concern.Wherein, composite material pressure container (mainly being carbon fiber wound composite container) has become the direction of high pressure, ultrahigh pressure vessel development because of characteristics such as its lightweight, high-strength and security height.Such high pressure vessel from the application of aircraft such as Aeronautics and Astronautics, guided missile, develops into the fuel reservoir medium for gas-fueled vehicles, hydrogen automobile.Maximum differently be that automobile-used high pressure vessel need frequently charge and discharge working gas as what use on automobile-used fuel storage container and the aircraft such as space flight, aviation, on aircraft then for once or the work characteristics that charges and discharges gas of few number of times, therefore, the fatigue properties to automobile-used high pressure vessel have higher requirement.In fact, this class pressure vessel is when exploitation and production, all to pass through the hydraulic pressure testing fatigue, generally want more than 8000 times, but it should be noted that gas charges and discharge has charged and discharged significantly different with hydraulic pressure, hydraulic pressure charges and discharge in the process and does not produce thermal effect owing to the incompressibility of water, and the gas process of charging and discharging has tangible thermal effect---burnt soup effect, and for composite cylinder, general heat transfer property is relatively poor, high pressure vessel need change impact by withstanding pressure under the very fast condition of temperature variation, its fatigue properties will inevitably decline to a great extent, therefore, carrying out test of high pressure vessel gas circulation charging/discharging fatigue and fatigue behaviour detects significant, consider that from testing efficiency and security it should be optimal selection that the high pressure vessel gas full-automatic unmanned on duty of setting up the collection test and being detected on one charges and discharge the cyclic fatigue test macro.
The application number of Zhejiang University's application is 200810060100.8 hydrogen storing container hydrogen environment fatigue test system, a kind of hydrogen charging/discharging fatigue Testing System Design of hydrogen storage vessel has been described, only can be engaged in simple hydrogen and charge and discharge test, not only can not accurately control, and also can't obtain accurate information (only the pressure maintenance situation from container judges whether to lose efficacy) the tired situation of container in the process of charging and discharging to the process of charging and discharging.The fatigue test system mentioned of this patent needs manually-operated, inconvenience simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel, this system not only can realize the Automatic Control of gases at high pressure cycle charge discharge torture test, but also can carry out online automatic detection to the tired situation of high pressure vessel.
For reaching above purpose, solution of the present invention is:
A kind of gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel, it comprises gases at high pressure circulation filling module, testing fatigue district, automatic control system, loading system is charged and discharged the tested container Automatic Cycle by automatic controlling system, detects the testing fatigue of tested container simultaneously in the process that charges and discharge.
Described gases at high pressure circulation filling module comprises high-pressure gas container, gas compressor, low pressure air container, low pressure nitrogen gas cylinder, pneumatic valve, solenoid valve, retaining valve, gas regulator, flow control valve, pressure transducer, be formed by connecting by pipeline, gas regulator, pneumatic valve, the flow control valve of high-pressure gas container by opening successively enters tested container through the normal open stop valve then and inflates; The normal open stop valve of gas by tested container enters the low pressure air container through gas regulator, the solenoid valve of opening successively and exits.Described low pressure air container pressure reaches setting value or the high-pressure gas container pressure drops to setting value, open solenoid valve, the gas of low pressure air container flows into compressor through solenoid valve, is pressed into the high-pressure gas container by compressor compresses through retaining valve and reuses.Described pressure transducer is installed on the high-pressure gas outlet of container respectively, the import of the import of tested container and low pressure air container.
Described gases at high pressure circulation filling module also comprises the normal pass stop valve that needs of urgent venting when being used for system debug or fault eliminating, before it is located at the solenoid valve that links to each other with the low pressure air container.
Described testing fatigue district comprises tested high pressure vessel, stop valve, solenoid valve, gas regulator, gas pressure sensor, temperature sensor, gas leak sensor, strain transducer, pressurized capsule, pressurized capsule is coated on tested container in it, confirm that by the signal feedback that is in gas leak sensor between pressurized capsule and the tested container and the strain transducer that is affixed on the tested container surface gas leaks concentration and container material dependent variable, and tested container fatigue failure is thought by system when reaching setting value, and fatigue test system is closed automatically.
Described fatigue test system is equipped with in the zone of safe divider wall around being installed in, and robot control system(RCS) should and gases at high pressure circulation filling module between safe divider wall is installed.
Described automatic control system comprises data acquisition system (DAS), stress/strain test macro, ac/dc electric power system, microcomputer system and main body control program, and its feedback signal control electromagnetic valve by the pressure transducer in temperature sensor in the tested container and the filling module opens and closes to be controlled automatically.
Owing to adopted above technical scheme, the present invention has following beneficial effect: one is tested and be detected on to system of the present invention collection high pressure vessel gas circulation charging/discharging fatigue, and can realize unattended Automatic Control, and gas medium recycles after by pressure release receiving tank and gas compressor supercharging in the cycle charge discharge process, can not cause gas waste and environmental pollution.
Description of drawings
The structural representation of Fig. 1 gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel.
Each several part is described as follows among the figure: 1. tested high-pressure gas container, 2. strain transducer, 3. temperature sensor, 4. gas sensor, 5. pressurized capsule, 6. normal open stop valve, 7. often close stop valve, 8. pressure-releasing electromagnetic valve, 9. pressure governor, 10. blow off pressure sensor, 11. blow off pressure sensors, 12. high pressure loading system pressure transducers, 13. pneumatic valve, 14. pressure governor, 15. drive the nitrogen solenoid valve, and 16. drive the nitrogen solenoid valve, 17. solenoid valve, 18. nitrogen cylinder, 19. low pressure gasholders, 20. gas compressors, 21. pneumatic valve, 22. the high-pressure gas container, 23. retaining valves .24 Data Acquisition and Conversion System (DACS), 25. safe divider wall, 26. gas flow regulating valve, solid line is represented pressure duct among the figure, and dotted line is represented power lead or signal wire.
Automatic Cycle charges and discharge in the process pressure and time relation figure in the tested composite hydrogen occluding bottle among Fig. 2 embodiment.
Automatic Cycle charges and discharge in the process graph of a relation of temperature and time in the tested composite hydrogen occluding bottle among Fig. 3 embodiment.
The strain that Automatic Cycle charges and discharge tested composite hydrogen occluding bottle in the process among Fig. 4 embodiment is curve map over time.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
This system is made up of three functional module districts, one is gases at high pressure circulation filling module, comprises high-pressure gas container 22, gas compressor 20, low pressure air container 19, low pressure nitrogen gas cylinder 18, pneumatic valve 13, solenoid valve 8, retaining valve 23, gas regulator 9,14, flow control valve 26, pressure transducer 12 and parts such as withstand voltage stainless-steel tube and pipe adapter; Another functional module district is the testing fatigue district, comprises tested high pressure vessel 1, stop valve 6, solenoid valve 8, gas pressure sensor 11, temperature sensor 3, gas leak sensor 4, strain transducer 2, pressurized capsule 5 and parts such as withstand voltage stainless-steel tube and pipe adapter; Also having functional areas is automatic control system, comprises data acquisition system (DAS) 24, stress/strain test macro, ac/dc electric power system, microcomputer system and main body control program.
One charges and discharge loop test and undertaken by following step: gases at high pressure enter tested container 1 through high-pressure gas container 22, gas regulator 14, pneumatic valve 13, gas flow regulating valve 26, normal open stop valve 6, when pressure in the tested container reaches presumptive test pressure, solenoid valve 15 cuts out, solenoid valve 15 control pneumatic valves 13 cut out thereupon, and gas replenishment process finishes; Keep beginning to carry out deflation course after the time interval, gases at high pressure enter low pressure air container 19 through tested container 1, normal open stop valve 6, gas regulator 9, solenoid valve 8, when pressure reaches certain value or high-pressure gas container pressure when dropping to certain value, solenoid valve 17,16 is opened, pneumatic valve 21 is opened thereupon, the while compressor operating, gas is compressed in the high pressure vessel through retaining valve 23, so far finishes one and charges and discharge circulation.The automatic control that charges and discharge process is by temperature sensor in the tested container 3 and many places pressure transducer 10,11, the switch of 12 the several solenoid valves of FEEDBACK CONTROL is realized, the tired situation of tested container in the process of charging and discharging simultaneously is to feed back by gas sensor 4 response signals in the tested container pressurized capsule 5 and the variation that is affixed on strain transducer 2 response signals on tested container surface to obtain, when revealing gas concentration and reach setting value or charge and discharge when the container material strain surpasses setting value in the process, tested container fatigue failure is thought by system, and fatigue test system is closed automatically.Manually stop valve 7 is need of urgent venting when being used for system debug or fault eliminating.Wherein nitrogen 18 is used to drive two pneumatic valves 13 and 21, and purpose is to avoid solenoid valve directly to contact with high pressure hydrogen, to improve the hydrogen security of system.
Fatigue test system is equipped with in the zone of safe divider wall 25 around should being installed in, and robot control system(RCS) should and the high-potting system between safe divider wall 25 is installed.
It is example that the present invention is twined aluminum liner composite hydrogen occluding bottle hydrogen cycle charge discharge fatigue test system with full-automatic carbon fiber, to the pressure of tested storage hydrogen bottle in the hydrogen cycle charge discharge process, temperature, strain along with the situation of change of test duration is carried out brief description.Fig. 2 is the cyclical variation situation that Automatic Cycle charges and discharge temperature, pressure in the one section composite hydrogen occluding bottle that intercepts in the test process, what set in this test is 315bar by charge pressure, the venting cutoff pressure is 30bar, from these two figure, can know that the consistance of finding out temperature and pressure changes, and the pressure and temperature fluctuation also relatively steadily.Fig. 3 is the cyclical variation situation of one section composite hydrogen occluding bottle strain of intercepting in the cycle charge discharge test process, strain charges and discharge the also corresponding variation of doing regularity of variation of process along with hydrogen as can be seen, and reappearance is also relatively good, has caused some fluctuation of sampled data but unevenness of may foil gauge pasting and sample frequency are higher.
One is tested and be detected on to system of the present invention collection high pressure vessel gas circulation charging/discharging fatigue, and can realize unattended Automatic Control, and the multiple working gas cycle charge discharge testing fatigue that is suitable for multiple high pressure vessel is particularly suitable for hydrogen or the torture test of rock gas cycle charge discharge and the detection of compound substance high pressure vessel.Simultaneously, gas medium recycles after by pressure release receiving tank and gas compressor supercharging in the cycle charge discharge process, can not cause gas waste and environmental pollution.The dynamic fatigue situation of cycle charge discharge process mesohigh container then is to obtain by hydrogen gas sensor response signal in the tested container pressurized capsule and the variation that is affixed on the strain transducer response signal on tested container surface, when revealing density of hydrogen and reach setting value or charge and discharge when the container material strain surpasses setting value in the process, fatigue test system is closed automatically.Relevant data in the test process is record and preservation automatically, in order to using with post analysis.This system can also utilize variation of temperature situation in the container in the process of charging and discharging to study the filling strategy of gases at high pressure except above these functions.
The above-mentioned description to embodiment is can understand and use the present invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the foregoing description, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.

Claims (8)

1, a kind of gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel, it is characterized in that: it comprises gases at high pressure circulation filling module, testing fatigue district, automatic control system, loading system is charged and discharged the tested container Automatic Cycle by automatic controlling system, detects the testing fatigue of tested container simultaneously in the process that charges and discharge.
2, gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 1, it is characterized in that: gases at high pressure circulation filling module comprises high-pressure gas container, gas compressor, low pressure air container, low pressure nitrogen gas cylinder, pneumatic valve, solenoid valve, retaining valve, gas regulator, flow control valve, pressure transducer, be formed by connecting by pipeline, gas regulator, pneumatic valve, the flow control valve of high-pressure gas container by opening successively enters tested container through the normal open stop valve then and inflates; The normal open stop valve of gas by tested container enters the low pressure air container through gas regulator, the solenoid valve of opening successively and exits.
3, gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 2, it is characterized in that: described low pressure air container pressure reaches setting value or the high-pressure gas container pressure drops to setting value, open solenoid valve, the gas of low pressure air container flows into compressor through solenoid valve, is pressed into the high-pressure gas container by compressor compresses through retaining valve and reuses.
4, gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 2 is characterized in that: described pressure transducer is installed on the high-pressure gas outlet of container respectively, the import of the import of tested container and low pressure air container.
5, gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 2, it is characterized in that: described gases at high pressure circulation filling module also comprises the normal pass stop valve that needs of urgent venting when being used for system debug or fault eliminating, before it is located at the solenoid valve that links to each other with the low pressure air container.
6, gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 1, it is characterized in that: described testing fatigue district comprises tested high pressure vessel, stop valve, solenoid valve, gas regulator, gas pressure sensor, temperature sensor, the gas leak sensor, strain transducer, pressurized capsule, pressurized capsule is coated on tested container in it, confirm that by the signal feedback that is in gas leak sensor between pressurized capsule and the tested container and the strain transducer that is affixed on the tested container surface gas leaks concentration and container material dependent variable, and tested container fatigue failure is thought by system when reaching setting value, and fatigue test system is closed automatically.
7, gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 6, it is characterized in that: described fatigue test system is equipped with in the zone of safe divider wall around being installed in, and robot control system(RCS) should and gases at high pressure circulation filling module between safe divider wall is installed.
8, described gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel as claimed in claim 1, it is characterized in that: described automatic control system comprises data acquisition system (DAS), stress/strain test macro, ac/dc electric power system, microcomputer system and main body control program, and its feedback signal control electromagnetic valve by the pressure transducer in temperature sensor in the tested container and the filling module opens and closes to be controlled automatically.
CNA2008102026301A 2008-11-12 2008-11-12 Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel Pending CN101403669A (en)

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CN101900655A (en) * 2010-05-21 2010-12-01 上海华理安全装备有限公司 Rupture disk fatigue tester for 400MPa gas cylinders
CN102269674A (en) * 2011-05-13 2011-12-07 南京工业大学 Integrated temperature control and explosion-proof device for high-pressure hydrogen storage cylinder tests
CN104215513A (en) * 2014-08-14 2014-12-17 合肥通用机械研究院 High-pressure hydrogen embrittlement structure test device and test method
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CN110763579A (en) * 2019-10-30 2020-02-07 张家港氢芯电气系统科技有限公司 High-pressure tube bundle vehicle storage tank material mechanical strain performance monitoring system
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CN101900655B (en) * 2010-05-21 2012-08-08 上海华理安全装备有限公司 Rupture disk fatigue tester for 400MPa gas cylinders
CN101900655A (en) * 2010-05-21 2010-12-01 上海华理安全装备有限公司 Rupture disk fatigue tester for 400MPa gas cylinders
CN102269674A (en) * 2011-05-13 2011-12-07 南京工业大学 Integrated temperature control and explosion-proof device for high-pressure hydrogen storage cylinder tests
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