CN104697861A - Low-energy-consumption multi-stage self-pressurization high-pressure container gas circulating test system - Google Patents

Low-energy-consumption multi-stage self-pressurization high-pressure container gas circulating test system Download PDF

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Publication number
CN104697861A
CN104697861A CN201510108760.9A CN201510108760A CN104697861A CN 104697861 A CN104697861 A CN 104697861A CN 201510108760 A CN201510108760 A CN 201510108760A CN 104697861 A CN104697861 A CN 104697861A
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pressure
gas
storage tank
source
container
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CN104697861B (en
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郑津洋
郭进兴
顾超华
徐平
赵永志
赵磊
张俊峰
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention relates to a high-pressure gas storage container test system, and aims to provide a low-energy-consumption multi-stage self-pressurization high-pressure container gas circulating test system. The system comprises an injection subsystem, a pressure release recycling subsystem and an automatic control subsystem, wherein the injection subsystem comprises a pneumatic pressurizer, a pressurization control device, a precooling device and two or more gas source storage tanks with different pressure stages; the pressure release recycling subsystem comprises a flow control device, a low-pressure recycling buffering container and a gas compressor; the automatic control subsystem comprises an industrial control computer, an automatic valve and a sensor; the industrial control computer is connected with the automatic valve, the sensor, the pressurization control device, the precooling device, the gas compressor and the pneumatic pressurizer respectively. According to the low-energy-consumption multi-stage self-pressurization high-pressure container gas circulating test system, the use amount of hydrogen and the compression energy consumption of hydrogen are reduced, and the energy consumption of the precooling device is reduced. According to the system, high-pressure gas in a container to be tested is completely used for pressurizing a medium-pressure gas source storage tank and a low-pressure gas source storage tank, so that supplementation of external energy is avoided, and energy is saved.

Description

A kind of low energy consumption multistage from supercharging high-pressure container gas cyclic test system
Technical field
The invention belongs to new energy field, relate to the gas cyclic test system of high-pressure gas container, be specially adapted to the gas loop test of fuel gas (rock gas, hydrogen etc.) the compound substance testing container that is storage object.
Background technology
Along with fossil energy shortage and day by day the highlighting of problem of environmental pollution, the gaseous energy such as rock gas, hydrogen of high energy efficiency, low emission plays more and more important role in the present and following life, for storing the container of these gases to obtain higher volumetric storage density and quality storage density, generally employing storage pressure high (20 ~ 70MPa), the carbon fibre composite container that intensity is high, quality is light.
High pressure vessel in use, the fluctuation of pressure causes the fatigue of container, simultaneously, because gas is filled with (compression), releases the impact of (expansion), the equal acute variation of temperature, thus cause the thermal stress of container, exacerbate the fatigue of container, for composite material vessel, because chamber wall heat transfer property is poor, this impact is more obvious.Traditional Water pressure circulation test can not be simulated container temperature and pressure in filling and use procedure and significantly be changed the STRESS VARIATION situation caused simultaneously, can not analog operation gas to the permeation effects of container wall, therefore, working gas is needed to utilize to carry out gas cyclic test for medium.
Because gas compressibility is large, test pressure is high in addition, and the operating cost of gas loop test system is very high, and this is one of obstacle of gas loop test.What the hydrogen loop test system proposed in Chinese invention patent CN200810060100.8 solved hydrogen recycles problem, but do not consider the energy consumption problem in system operation, it adopts single-stage air feed in loading system design, in the design of pressure release recovery system, adopt compressor boost completely, cause the waste of high-pressure energy and the lifting of pre-cooled energy.Gas compressor output pressure simultaneously in this patent system and discharge capacity very high, add the acquisition cost of compressor.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, provides the multistage from supercharging high-pressure container gas cyclic test system of a kind of low energy consumption.
In order to technical solution problem, solution of the present invention is:
There is provided the multistage from supercharging high-pressure container gas cyclic test system of a kind of low energy consumption, this system also comprises filling subsystem, pressure release recovery subsystem and autonomous control subsystem;
Described filling subsystem comprises Pneumatic booster machine, boosting controller, pre-cooler, and the source of the gas storage tank of at least two different pressures grades; The discharge pipe of each source of the gas storage tank is all connected to boosting controller, and boosting controller, pre-cooler are connected by pipeline successively with testing container; The source of the gas storage tank that wherein pressure rating is minimum is also connected to the import of Pneumatic booster machine by pipeline, the outlet of Pneumatic booster machine is then connected to the higher source of the gas storage tank of pressure rating by pipeline;
Described pressure release is reclaimed subsystem and is comprised volume control device, low pressure recovery buffer container and gas compressor; Volume control device one end is connected to the source line of testing container, and the other end is connected to low pressure respectively by pipeline and reclaims buffer container and at least one source of the gas storage tank; Low pressure reclaims buffer container and also connects gas compressor and the minimum source of the gas storage tank of pressure rating successively by pipeline;
Described autonomous control subsystem comprises industrial computer, be located at automatic valve between each equipment on associated line and sensor, and is located at the sensor in environmental cabinet; Industrial computer connects each automatic valve and sensor respectively by signal wire, and industrial computer is also connected to boosting controller, pre-cooler, gas compressor and pneumatic supercharger respectively by signal wire.
In the present invention, described automatic valve comprises: be located at the air-operated solenoid valve on the gas inlet-outlet pipeline of each source of the gas storage tank respectively; Be located at the air intake valve between pre-cooler and testing container; To be located between volume control device and source of the gas storage tank counter fills valve; And, be located at volume control device and low pressure and reclaim Drainage valve between buffer container.
In the present invention, described sensor comprises: be located at the pressure transducer on each source of the gas storage-tank effluent line; Be located at the pressure transducer of testing container porch; Be located at the temperature sensor of testing container inside; Be located at the pressure transducer on pipeline between low pressure recovery buffer container and gas compressor; And, be located at the temperature sensor in environmental cabinet and gas concentration sensor.
In the present invention, the gateway pipeline of each source of the gas storage tank is equipped with retaining valve.
In the present invention, on the discharge pipe of each source of the gas storage tank, between low pressure recovery buffer container and gas compressor, on pipeline, be respectively equipped with safety valve.
In the present invention, described industrial computer is located at the side of insulation blocking wall, and in system, the opposite side of insulation blocking wall is all located at by all miscellaneous equipments or pipeline.
Of the present inventionly realize principle:
Multistagely be divided into filling subsystem from supercharging high-pressure container gas cyclic test system, pressure release reclaims three part such as subsystem, autonomous control subsystem.Filling subsystem comprises low pressure, middle pressure, high pressure three grades of source of the gas storage tanks, Pneumatic booster machine, boosting controller, pre-cooler etc.; Pressure release is reclaimed subsystem and is comprised volume control device, low pressure recovery buffer container, gas compressor etc., and above-mentioned parts are connected with all kinds of valve by pressure piping, and pipeline is configured with pressure transducer; Automatic control system is by gathering the data such as pressure transducer, temperature sensor, gas concentration sensor, according to default, control the operation of the parts such as air-operated solenoid valve, gas compressor, Pneumatic booster machine, pre-cooler, boosting controller, environmental cabinet.At the boost phase of test process, control system utilizes low pressure successively, middle pressure, high-pressure air source is inflated to testing container, after testing container reaches set pressure, system closing air intake valve, enter pressure release recovery stage, first open and instead fill valve, the gases at high pressure in testing container are utilized to be successively middle pressurized air source and the anti-inflatable body of low-pressure gas source, realize this two-stage source of the gas from supercharging, then Drainage valve is opened, low-pressure gas source storage tank is entered by supplementing after the low-pressure gas of releasing out compression by compressor, at whole pressure release recovery stage, Pneumatic booster machine is from low-pressure gas source air-breathing, successively the pressure of high-pressure air source and middle pressurized air source is supplemented to set pressure, realize the repressurize of source of the gas, thus complete the charge and discharge circulation of " high pressure storage-fill fast-pressure release reclaim-from supercharging-repressurize ".
In the present invention, the operational factor that autonomous control subsystem transmits according to each sensor or equipment, control system is run, and judges test result; Filling subsystem utilizes the pressure reduction of source of the gas storage tank and testing container, realizes the quick filling to testing container by the keying of air intake valve (20); Pressure release is reclaimed subsystem and is filled by anti-the recycling realizing recyclegas from supercharging and compressor repressurize.
In filling process, source of the gas at different levels is under the control of autonomous control subsystem, and be followed successively by testing container filling gas, in the process, boosting controller controls the rate of pressure rise of testing container, and pre-cooler controls the temperature of filling gas.In pressure leak process, first utilize the pressure reduction of testing container 24 and source of the gas storage tank to realize centering pressurized air source, the counter of low-pressure gas source filled, realize this two-stage source of the gas from supercharging; Then utilize gas compressor to carry out tonifying Qi to low-pressure gas source, in the whole process of pressure release, Pneumatic booster machine suction gas from low-pressure gas source, successively by high-pressure air source, middle pressurized air source ftercompction to set pressure, realize the repressurize of source of the gas.
In the present invention, environmental cabinet be one can the closed container of regulating and controlling temperature, can certain pressure be born, when testing container occurs to leak, gas concentration sensor in environmental cabinet can detect gas leakage, and when testing container is blasted, environmental cabinet can keep out part impact energy.
Compared with prior art, the beneficial effect that the present invention has is:
The design of gas source scheme of the multiple different pressures grades 1, in the present invention, compared with single-stage design scheme, due to the reduction of hydrogen partial pressure, decreases the use amount of hydrogen and the compression energy consumption of hydrogen; In filling process, due to the reduction of pressure reduction before and after boosting controller, the gas temperature change that Joule-Thomson effect causes also will reduce, and then reduce the energy consumption of pre-cooler.
2, pressure release reclaims subsystem in reclaiming from supercharging, utilizes the gases at high pressure centering pressurized air source storage tank of testing container and low-pressure gas source storage tank to carry out supercharging completely, does not have supplementing of outside energy, saves energy.
3, the most high output pressure making gas compressor of selecting of Pneumatic booster machine need not reach the pressure of high-pressure air source, as long as reach the design pressure of low-pressure gas source, greatly reduces the acquisition cost of compressor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, solid line represents gas piping, and represented by dotted arrows controls and signal line.Each Reference numeral:
1. Pneumatic booster machine, 2. retaining valve, 3, 4, 5, 6, 15, 16, 17. air-operated solenoid valves, 7. high-pressure air source storage tank, 8. pressurized air source storage tank in, 9. low-pressure gas source storage tank, 10. pressure transducer, 11. safety valve, 12. pressure transducers, 13. pressure transducers, 14. hand stop valves, 18. boosting controllers, 19. pre-coolers, 20. air intake valves, 21. pressure transducers, 22. temperature sensors, 23. environmental cabinets, 24. testing containers, 25. temperature sensors, 26. gas concentration sensors, 27. volume control devices, 28. gas compressors, 29. low pressure reclaim buffer container, 30. instead fill valve, 31. Drainage valves, 32. insulation blocking walls, 33. industrial computers.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed.
As shown in drawings, system set forth in the present invention comprises three subsystems, one is filling subsystem, by the source of the gas storage tank of low-pressure gas source storage tank 9, middle pressurized air source storage tank 8, these three grades of different pressures grades of high-pressure air source storage tank 7, and boosting controller 18, pre-cooler 19, Pneumatic booster machine 1 are formed by connecting by high pressure line and valve; One be pressure release reclaim subsystem, by volume control device 27, counter fill valve 30, Drainage valve 31, low pressure reclaim buffer container 29, gas compressor 28 etc. formed by pipeline; Another one is autonomous control subsystem, obtains the data such as related pressure, temperature, gas concentration by industrial computer 33 from each sensor, the automatic valve in control whole system or the automatic operation of equipment.
With the carbon fiber of 70MPa, 74L full winding aluminum inner bag composite hydrogen occluding container for example, workflow of the present invention is described.
1) preparatory stage: hydrogen exchange is carried out to pipelines all in system and parts, low-pressure gas source storage tank 9, middle pressurized air source storage tank 8, high-pressure air source storage tank 7 are pressurized to 30MPa, 60MPa, 98MPa respectively;
2) annotate the stage: open air intake valve 20, then open air-operated solenoid valve 17, utilize low-pressure gas source storage tank 9 to annotate hydrogen for testing container 24; When pressure reduction is less than setting value, close air-operated solenoid valve 17, open air-operated solenoid valve 16, switch to middle pressurized air source storage tank 8 and annotate for testing container 24; When pressure reduction is less than setting value, close air-operated solenoid valve 16, open air-operated solenoid valve 15, switch to high-pressure air source storage tank 7 and annotate for testing container 24; Until testing container 24 reaches the higher limit of test pressure, close air-operated solenoid valve 15 and air intake valve 20.In filling process, industrial computer, according to three stage pressure sensors 10,12,13 and for measuring the pressure transducer 21 of testing container 24, the numerical value of temperature sensor 22, controls the operation of the keying of above-mentioned valve and boosting controller 18, pre-cooler 19.
3) pressure release recovery stage: first open and instead fill valve 30, then open air-operated solenoid valve 5, utilizes testing container 24 to be that middle pressurized air source storage tank 8 is counter with the pressure reduction of middle pressurized air source storage tank 8 and fills hydrogen; When both pressure reduction are less than setting value, close air-operated solenoid valve 5, opening air-operated solenoid valve 6 is the anti-hydrogen that fills of low-pressure gas source storage tank 9; Until both pressure reduction are less than setting value, close air-operated solenoid valve 6 and instead fill valve 30; Open Drainage valve 31, the gas in testing container 24 is annotated to low-pressure gas source storage tank 9, until testing container 24 is reduced to the lower limit of test pressure after reclaiming buffer container 29 and gas compressor 28 through volume control device 27, Drainage valve 31, low pressure.In pressure release removal process, Pneumatic booster machine 1 sucks hydrogen from low-pressure gas source storage tank 9, successively by high-pressure air source storage tank 7, the ftercompction of middle pressurized air source storage tank 8 to set pressure, i.e. 98MPa and 60MPa.
4) next circulation is entered.
According to above-mentioned flow process, after each test loop, state when pressure recover to the circulation of high-pressure air source storage tank 7, middle pressurized air source storage tank 8 starts, thus guarantee that testing container 24 can be forced into set pressure by each circulation.In test process, industrial computer is according to the operation of the parameter control systems such as bleed pressure sensor at different levels, testing container 24 pressure transducer, temperature sensor, when monitoring the abnormal signal of gas concentration sensor, the halt system that will take urgent measure runs, and provides alarm.
The present invention while completing the container gas loop test that international standard specifies smoothly, can effectively reduce precooling energy consumption, compression energy consumption, reduces testing cost.

Claims (5)

1. low energy consumption is multistage from a supercharging high-pressure container gas cyclic test system, comprises the environmental cabinet that inside placed testing container; It is characterized in that, this system also comprises filling subsystem, pressure release recovery subsystem and autonomous control subsystem;
Described filling subsystem comprises Pneumatic booster machine, boosting controller, pre-cooler, and the source of the gas storage tank of at least two different pressures grades; The discharge pipe of each source of the gas storage tank is all connected to boosting controller, and boosting controller, pre-cooler are connected by pipeline successively with testing container; The source of the gas storage tank that wherein pressure rating is minimum is also connected to the import of Pneumatic booster machine by pipeline, the outlet of Pneumatic booster machine is then connected to the higher source of the gas storage tank of pressure rating by pipeline;
Described pressure release is reclaimed subsystem and is comprised volume control device, low pressure recovery buffer container and gas compressor; Volume control device one end is connected to the source line of testing container, and the other end is connected to low pressure respectively by pipeline and reclaims buffer container and at least one source of the gas storage tank; Low pressure reclaims buffer container and also connects gas compressor and the minimum source of the gas storage tank of pressure rating successively by pipeline;
Described autonomous control subsystem comprises industrial computer, be located at automatic valve between each equipment on associated line and sensor, and is located at the sensor in environmental cabinet; Industrial computer connects each automatic valve and sensor respectively by signal wire, and industrial computer is also connected to boosting controller, pre-cooler, gas compressor and pneumatic supercharger respectively by signal wire.
2. system according to claim 1, is characterized in that, described automatic valve comprises: be located at the air-operated solenoid valve on the gas inlet-outlet pipeline of each source of the gas storage tank respectively; Be located at the air intake valve between pre-cooler and testing container; To be located between volume control device and source of the gas storage tank counter fills valve; And, be located at volume control device and low pressure and reclaim Drainage valve between buffer container.
3. system according to claim 1, is characterized in that, described sensor comprises: be located at the pressure transducer on each source of the gas storage-tank effluent line; Be located at the pressure transducer of testing container porch; Be located at the temperature sensor of testing container inside; Be located at the pressure transducer on pipeline between low pressure recovery buffer container and gas compressor; And, be located at the temperature sensor in environmental cabinet and gas concentration sensor.
4. according to the system described in claims 1 to 3 any one, it is characterized in that, the gateway pipeline of each source of the gas storage tank is equipped with retaining valve.
5. according to the system described in claims 1 to 3 any one, it is characterized in that, on the discharge pipe of each source of the gas storage tank, between low pressure recovery buffer container and gas compressor, on pipeline, be respectively equipped with safety valve.
CN201510108760.9A 2015-03-12 2015-03-12 A kind of low energy consumption it is multistage from supercharging high-pressure tank atmosphere cyclic test system Active CN104697861B (en)

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CN105021389A (en) * 2015-07-14 2015-11-04 浙江大学 Multifunctional component gas fatigue test system
CN105156880A (en) * 2015-07-31 2015-12-16 浙江大学 Optimal configuration method for compression and gas storage system of trailer hydrogen supply type hydrogen refueling station
CN107030069A (en) * 2017-06-09 2017-08-11 杨君锋 The anhydrous purging system of heavy caliber long range pressure pipeline and its application method
KR101790007B1 (en) * 2016-12-27 2017-10-25 한국가스안전공사 Combination testing device for expand test of gas cylinder
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CN109030252A (en) * 2018-07-25 2018-12-18 浙江大学 Monitoring device and method for composites gas cylinder fatigue damage under hot environment
CN110221640A (en) * 2019-07-03 2019-09-10 清华大学 A kind of controllable temperature pressure control air seal test platform auxiliary system
CN111238919A (en) * 2020-02-25 2020-06-05 蓝箭航天技术有限公司 Double-medium pressure test device
WO2020133778A1 (en) * 2018-12-23 2020-07-02 大连理工大学 Fatigue testing system for liquefied petroleum gas cylinder and testing method for fatigue testing system
CN114383992A (en) * 2022-01-07 2022-04-22 核工业湖州勘测规划设计研究院股份有限公司 Sparse material gas permeability measuring device and method

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CN105021389A (en) * 2015-07-14 2015-11-04 浙江大学 Multifunctional component gas fatigue test system
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CN105156880A (en) * 2015-07-31 2015-12-16 浙江大学 Optimal configuration method for compression and gas storage system of trailer hydrogen supply type hydrogen refueling station
KR101790007B1 (en) * 2016-12-27 2017-10-25 한국가스안전공사 Combination testing device for expand test of gas cylinder
KR101790006B1 (en) * 2016-12-27 2017-10-25 한국가스안전공사 Water tank type testing device for expand test of gas cylinder
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CN110221640A (en) * 2019-07-03 2019-09-10 清华大学 A kind of controllable temperature pressure control air seal test platform auxiliary system
WO2021000464A1 (en) * 2019-07-03 2021-01-07 清华大学 Temperature- and pressure-controllable auxiliary system for gas seal testing platform
CN111238919A (en) * 2020-02-25 2020-06-05 蓝箭航天技术有限公司 Double-medium pressure test device
CN114383992A (en) * 2022-01-07 2022-04-22 核工业湖州勘测规划设计研究院股份有限公司 Sparse material gas permeability measuring device and method

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