CN210037461U - Inflation and deflation circulation test system of high-pressure hydrogen storage cylinder - Google Patents
Inflation and deflation circulation test system of high-pressure hydrogen storage cylinder Download PDFInfo
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- CN210037461U CN210037461U CN201821870951.4U CN201821870951U CN210037461U CN 210037461 U CN210037461 U CN 210037461U CN 201821870951 U CN201821870951 U CN 201821870951U CN 210037461 U CN210037461 U CN 210037461U
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Abstract
The utility model discloses a charging and discharging cycle test system of a high-pressure hydrogen storage cylinder, which comprises a hydrogen source (1), a compression device (2), a high-pressure hydrogen storage device (3) and a conveying loop (4); a hydrogen flow regulating device (5), a hydrogen temperature regulating device (6), an environment temperature and humidity regulating device (7), a hydrogen recovery device (9), a venting device (10) and a measurement control unit (11); the testing device system can meet the requirements of hydrogen pressure fatigue tests at normal temperature and extreme temperature by taking hydrogen as a medium in service performance tests of the B-type gas cylinder and air pressure permeation/leakage tests at extreme temperature. The utility model relates to a rationally, maneuverability is strong, excellent in use effect, can steadily fill gassing process, can accomplish the partial performance test of high pressure hydrogen storage cylinder.
Description
Technical Field
The utility model relates to a high pressure hydrogen storage cylinder type test technical field especially relates to a hydrogen pressure fatigue test under the normal atmospheric temperature and the extreme temperature of 70MPa high pressure hydrogen storage cylinder and atmospheric pressure infiltration/leak test under the extreme temperature, is the charge and discharge circulation test device that can go on under the hydrogen medium. Can be used for the carbon fiber full-winding gas cylinder with the compressed hydrogen aluminum inner container for the vehicle.
Background
GTR 13: global technical regulation on hydrogen for fuel cell vehicles (Global hydrogen fuel cell vehicle technical regulation) is a criterion for performance assessment of various parts of Global hydrogen fuel cell vehicles, and each contracted country must be popularized in China. On the basis of summarizing design, manufacturing and using experiences and research results of 'automobile compressed hydrogen aluminum liner carbon fiber fully-wound gas cylinders' (hereinafter referred to as gas cylinders) in China, the national gas cylinder standardization technical committee combines relevant standards of high-pressure hydrogen cylinders in countries and regions such as Europe, America, Japan and the like to provide a standard (submission) of 'automobile compressed hydrogen aluminum liner carbon fiber fully-wound gas cylinders', and specific contents are shown in accessories. The standard specifies the type and parameters of the cylinder, technical requirements, test methods, inspection rules, labels, packaging, shipping, storage and other requirements, and is the basis for the design, manufacture, inspection and use of this type of cylinder.
The standards clearly describe the test items, test methods and qualified standards of the factory inspection and the type test of the gas cylinder and the liner. The hydrogen pressure fatigue test at normal temperature and extreme temperature and the air pressure permeation/leakage test at extreme temperature are used as key indexes for measuring the service performance of the air cylinder, and are two important safety performance detection items in the air cylinder type test.
The hydrogen pressure fatigue test at normal temperature and extreme temperature and the air pressure permeation/leakage test at extreme temperature are both performance tests after the simulation gas cylinder is filled under different conditions, and the main principle is to verify the gas tightness of the gas cylinder under different temperatures, humidity, filling pressure and cycle times, so that the service life of the gas cylinder is ensured.
At present, its shortcoming of china's universality is that hydrogen pressure can't steadily reach 70MPa, the utility model discloses a one set of 70MPa on-vehicle hydrogen storage cylinder fills gas circulation test system device, can make the gas cylinder reach fast under the temperature humidity of regulation through the ladder pressure boost mode and fill the gas pressure, more steady start fills the gas circulation process of filling.
SUMMERY OF THE UTILITY MODEL
The technical solution problem of the utility model is that: overcomes the defects of the prior art and provides a charging and discharging circulation test device of a high-pressure hydrogen storage cylinder.
The technical solution of the utility model is that: a charging and discharging circulation test system of a high-pressure hydrogen storage cylinder comprises a hydrogen source, a compression device, a high-pressure hydrogen storage device and a conveying loop; the system comprises a hydrogen flow regulating device, a hydrogen temperature regulating device, an environment temperature and humidity regulating device, a hydrogen recovery device, an emptying device and a measurement control unit;
the high-pressure hydrogen storage device comprises a 42MPa hydrogen storage device and a 95MPa hydrogen storage device; the gas cylinder is arranged in the environment temperature and humidity adjusting device; the measurement control unit controls hydrogen generated by the hydrogen source to enter the compression device after passing through the hydrogen recovery device, the hydrogen is compressed by the compression device and then outputs 42MPa of hydrogen to the high-pressure hydrogen storage device, and after the 42MPa of hydrogen storage device is fully stored, the compression device compresses the hydrogen and outputs 95MPa of hydrogen to the high-pressure hydrogen storage device until the 95MPa of hydrogen storage device is fully stored;
according to a preset inflation test working condition, hydrogen in the high-pressure hydrogen storage device enters a hydrogen flow regulating device through a conveying loop, the outflow rate of the input hydrogen is regulated by the hydrogen flow regulating device, the regulated hydrogen enters a hydrogen temperature regulating device to regulate the temperature, and then enters a gas cylinder to complete inflation;
during deflation, if the hydrogen is not recovered, the hydrogen in the gas cylinder enters the emptying device through the hydrogen temperature adjusting device, and the emptying device puts the hydrogen into the atmosphere; if need retrieve hydrogen, cushion through the low pressure buffer tank with the hydrogen in the gas cylinder through the recovery pipeline, later deposit hydrogen recovery unit.
Further, the high pressure is 35-90 MPa.
The device further comprises a gas cylinder leakage detecting device, wherein the gas cylinder leakage detecting device comprises a leakage detecting water tank, a soap film flowmeter and a hydrogen collecting and metering device;
submerging the gas cylinder in a leakage detection water tank reaching a preset temperature, wherein the leakage detection water tank is of a sealing structure; inflating the gas cylinder, and maintaining the pressure after the pressure in the gas cylinder reaches the working pressure; the soap film flowmeter is connected with a pipeline at the top of the leakage detection water tank, and leaked hydrogen enters the soap film flowmeter through the pipeline to obtain the hydrogen loss flow at each moment; the soap film flowmeter is connected with the hydrogen collecting and metering device through a pipeline, the average flow of the soap film flowmeter is metered for a period of time through the hydrogen collecting and metering device, and the hydrogen collecting and metering device is emptied through the emptying device 10 after the metering is finished.
Furthermore, the high-pressure hydrogen storage device comprises a plurality of 42MPa hydrogen storage devices and 95MPa hydrogen storage devices, the plurality of hydrogen storage devices are connected in series through pipelines, and the hydrogen in the 42MPa hydrogen storage devices is firstly output and is subjected to relay inflation with the 95MPa hydrogen storage devices, so that inflation tests under different working conditions are realized.
Furthermore, the 95MPa hydrogen storage device adopts a horizontal multi-layer binding container with the working pressure of 95 MPa.
Furthermore, the 42MPa hydrogen storage device adopts a spherical tank with the working pressure of 32 MPa.
Furthermore, the compression device is composed of 2 diaphragm compressors, a plurality of medium-pressure presses and pipelines, and the 2 diaphragm compressors and the plurality of medium-pressure presses are matched to compress input low-pressure hydrogen and output hydrogen under 32MPa and 95 MPa.
Further, the environment temperature and humidity adjusting device comprises a liquid nitrogen spraying refrigerating device, an electric heater and a humidifier, the liquid nitrogen spraying refrigerating device is used for carrying out liquid nitrogen spraying refrigerating, the electric heater is used for heating to achieve a preset temperature working condition, and the temperature adjusting precision is +/-5 ℃; the humidifier ensures that the relative humidity can reach at least 95% at 50 ℃.
Further, the hydrogen flow rate regulating device regulates the hydrogen flow rate to ensure that the hydrogen speed entering the gas cylinder does not exceed 60g/s, and the gas filling is finished within 3-5 minutes.
Further, the hydrogen flow regulating device adopts a hole plate type regulation or regulates through a regulating valve.
Compared with the prior art, the utility model beneficial effect does:
the 35-90MPa hydrogen storage cylinder inflation and deflation cycle test device capable of completing the inflation and deflation tests in the type requirements of the cylinder has the high-pressure hydrogen source supply capacity, the hydrogen recovery, compression, storage and conveying capacity, the test environment temperature and humidity adjusting capacity, the hydrogen high and low temperature adjusting capacity, the inflation and deflation rate control capacity, the cylinder leakage rate detecting capacity, the data acquisition and processing capacity and the test safety protection capacity. The device can complete the hydrogen pressure fatigue test under normal temperature and extreme temperature by using hydrogen as a medium in the service performance test of the B-type gas cylinder (NWP is more than 35MPa and less than or equal to 70MPa), and the test device system required by the gas pressure permeation/leakage test under the extreme temperature. The utility model relates to a rationally, maneuverability is strong, excellent in use effect, can steadily fill gassing process.
Drawings
FIG. 1 is a schematic view of the system of the present invention;
fig. 2 is the utility model discloses experimental environment temperature humidity control device schematic diagram.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a gas charging and discharging cycle test system for a high-pressure hydrogen storage cylinder comprises a hydrogen source 1, a compression device 2, a high-pressure hydrogen storage device 3 and a delivery loop 4; a hydrogen flow regulating device 5, a hydrogen temperature regulating device 6, an environment temperature and humidity regulating device 7, a hydrogen recovery device 9, an emptying device 10 and a measurement control unit 11; the inflation and deflation circulation test process is realized by controlling each valve on the conveying or recovery loop through the measurement control unit 11; the gas cylinder is placed in an ambient temperature and humidity regulating device 7.
The hydrogen source 1 is obtained by electrolytic hydrogen production or methanol hydrogen production and is stored for 4m3A/22 MPa hydrogen storage tank, and is connected with the compression device 2 through a hydrogen recovery device 9 by using a hydrogen supply pipeline.
The compression device compresses input hydrogen into hydrogen with two gas pressures of 95MPa and 32MPa and outputs the hydrogen by utilizing 2 diaphragm compressors, a plurality of medium-pressure presses and pipelines. The hydrogen gas to be supplied may be hydrogen gas recovered in the hydrogen recovery device 9.
The high-pressure hydrogen storage device 3 is composed of 2 units of 1m3Horizontal multi-layer binding container with working pressure of 95MPa and 2 platforms of 1.4m3And a spherical tank with the working pressure of 32MPa, wherein 4 spherical tanks are connected in series through a pipeline. The compressed hydrogen of the compression device 2 is firstly output to the 42MPa hydrogen to the high-pressure hydrogen storage device 3, after the 42MPa hydrogen storage device is full, the compression device 2 compresses the hydrogen and outputs 95MPa hydrogen to the high-pressure hydrogen storage device 3 until the 95MPa hydrogen storage device is full; therefore, the air charging test under different working conditions can be realized by relay air charging of the storage devices with the air pressures of 42MPa and 95MPa, for example, the air charging under the working condition of 87.5MPa can be continuously finished for 5 times for a 100L/70MPa air bottle.
The environment temperature and humidity adjusting device is provided with a liquid nitrogen spraying refrigerating device, an electric heater and a humidifier as shown in figure 2; the cold working condition adopts liquid nitrogen to spray and refrigerate, and the hot working condition adopts the mode of heating by an electric heater, so that the atmospheric pressure fatigue test environment temperature can be completed: the requirements of three working conditions of minus 40 ℃, 20 ℃ and 50 ℃ and the temperature regulation precision is +/-5 ℃; the relative humidity can reach at least 95% at 50 ℃; sealing treatment is carried out between all wall surfaces in the device and between the side hung door and the structural main body of the device, the pressure is greater than 0.1MPaG, and the structural load is 150 kg; the device sets the explosion-proof grade of electric equipment as Exia II CT 4; the continuous working time is not less than 30 hours.
And (3) an inflation process:
according to a preset inflation test working condition, firstly inflating the gas cylinder by a 42MPa spherical tank, entering a hydrogen flow regulating device 5 through a conveying loop 4, regulating the outflow rate of input hydrogen by the hydrogen flow regulating device 5, entering the regulated hydrogen into a hydrogen temperature regulating device 6 to regulate the temperature until the temperature reaches a required temperature, then entering the gas cylinder, completing inflation if the pressure at the moment meets the requirement, and after the pressure reaches balance (the pressure difference between a high-pressure hydrogen storage device 3 and the gas cylinder is less than 1.5MPa) if the pressure is lower than the preset working condition pressure, inflating the gas cylinder by a 95MPa storage device; and after the gas cylinder reaches the test pressure, closing each gas control valve opened by the gas charging path, and after the gas cylinder is stabilized, preparing to start a gas discharging process.
During deflation, if the hydrogen is not recovered, the hydrogen in the gas cylinder enters the emptying device 10 through the hydrogen temperature adjusting device 6, and the emptying device puts the hydrogen into the atmosphere; if need retrieve hydrogen, cushion through the low pressure buffer tank with the hydrogen in the gas cylinder through the recovery pipeline, later deposit in hydrogen recovery unit 9.
The utility model discloses the device can realize atmospheric pressure infiltration/leakage test under the extreme temperature through increasing a gas cylinder leak hunting device 8. The gas cylinder leakage detecting device 8 comprises a leakage detecting water tank, a soap film flowmeter and a hydrogen collecting and metering device;
submerging the gas cylinder in a leakage detection water tank reaching a preset temperature, wherein the leakage detection water tank is of a sealing structure; inflating the gas cylinder, and maintaining the pressure (not less than 30 hours) after the pressure in the gas cylinder reaches the working pressure; the soap film flowmeter is connected with a pipeline at the top of the leakage detection water tank, and leaked hydrogen enters the soap film flowmeter through the pipeline to obtain the hydrogen loss flow at each moment; the soap film flowmeter is connected with the hydrogen collecting and metering device through a pipeline, the average flow of the soap film flowmeter is metered for a period of time through the hydrogen collecting and metering device, and the hydrogen collecting and metering device is emptied through the emptying device 10 after the metering is finished.
The process steps of the inflation and deflation process can realize automatic detection, judgment and control through the measurement control unit 11, and realize one-key operation in the inflation process and one-key operation in the deflation process.
The non-detailed description of the present invention is within the common general knowledge of those skilled in the art.
Claims (10)
1. The utility model provides a gas charging and discharging circulation test system of high pressure hydrogen storage cylinder which characterized in that: comprises a hydrogen source (1), a compression device (2), a high-pressure hydrogen storage device (3) and a conveying loop (4); a hydrogen flow regulating device (5), a hydrogen temperature regulating device (6), an environment temperature and humidity regulating device (7), a hydrogen recovery device (9), a venting device (10) and a measurement control unit (11);
the high-pressure hydrogen storage device (3) comprises a 42MPa hydrogen storage device and a 95MPa hydrogen storage device; the gas cylinder is arranged in the environment temperature and humidity adjusting device (7); the measurement control unit (11) controls hydrogen generated by the hydrogen source (1) to enter the compression device (2) after passing through the hydrogen recovery device (9), the hydrogen is compressed by the compression device (2) and then 42MPa of hydrogen is output to the high-pressure hydrogen storage device (3), after the 42MPa of hydrogen storage device is fully stored, the compression device (2) compresses the hydrogen and outputs 95MPa of hydrogen to the high-pressure hydrogen storage device (3) until the 95MPa of hydrogen storage device is fully stored; according to a preset inflation test working condition, hydrogen in the high-pressure hydrogen storage device (3) enters a hydrogen flow regulating device (5) through a conveying loop (4), the outflow rate of the input hydrogen is regulated by the hydrogen flow regulating device (5), the regulated hydrogen enters a hydrogen temperature regulating device (6) to regulate the temperature, and then enters a gas cylinder to complete inflation; during deflation, if the hydrogen is not recovered, the hydrogen in the gas cylinder enters the emptying device (10) through the hydrogen temperature adjusting device (6), and the emptying device puts the hydrogen into the atmosphere; if the hydrogen needs to be recovered, the hydrogen in the gas cylinder is buffered by the low-pressure buffer tank through the recovery pipeline and then stored in the hydrogen recovery device (9).
2. The system of claim 1, wherein: the high pressure is 35-90 MPa.
3. The system of claim 1, wherein: the device is characterized by also comprising a gas cylinder leakage detecting device (8), wherein the gas cylinder leakage detecting device (8) comprises a leakage detecting water tank, a soap film flowmeter and a hydrogen collecting and metering device;
submerging the gas cylinder in a leakage detection water tank reaching a preset temperature, wherein the leakage detection water tank is of a sealing structure; inflating the gas cylinder, and maintaining the pressure after the pressure in the gas cylinder reaches the working pressure; the soap film flowmeter is connected with a pipeline at the top of the leakage detection water tank, and leaked hydrogen enters the soap film flowmeter through the pipeline to obtain the hydrogen loss flow at each moment; the soap film flowmeter is connected with the hydrogen collecting and metering device through a pipeline, the average flow of a period of time is metered through the hydrogen collecting and metering device, and the hydrogen collecting and metering device is emptied through the emptying device (10) after metering is completed.
4. The system of claim 1, wherein: the high-pressure hydrogen storage device (3) comprises a plurality of 42MPa hydrogen storage devices and 95MPa hydrogen storage devices, the hydrogen storage devices are connected in series through pipelines, and the hydrogen in the 42MPa hydrogen storage devices is output firstly and is subjected to relay inflation with the 95MPa hydrogen storage devices, so that inflation tests under different working conditions are realized.
5. The system according to claim 1 or 4, wherein: the 95MPa hydrogen storage device adopts a horizontal multi-layer binding container with the working pressure of 95 MPa.
6. The system according to claim 1 or 4, wherein: the 42MPa hydrogen storage device adopts a spherical tank with the working pressure of 32 MPa.
7. The system of claim 1, wherein: the compression device (2) is composed of 2 diaphragm compressors, a plurality of medium-pressure presses and pipelines, and the input low-pressure hydrogen is compressed and the hydrogen under two pressures of 32MPa and 95MPa is output by the cooperation of the (2) diaphragm compressors and the plurality of medium-pressure presses.
8. The system of claim 1, wherein: the environment temperature and humidity adjusting device comprises a liquid nitrogen spraying and refrigerating device, an electric heater and a humidifier, the liquid nitrogen spraying and refrigerating device is used for spraying and refrigerating liquid nitrogen, the electric heater is used for heating to achieve a preset temperature working condition, and the temperature adjusting precision is +/-5 ℃; the humidifier ensures that the relative humidity can reach at least 95% at 50 ℃.
9. The system of claim 1, wherein: the hydrogen flow rate adjusting device (5) adjusts the hydrogen flow rate to ensure that the hydrogen speed entering the gas cylinder does not exceed 60g/s, and the gas filling is completed within 3-5 minutes.
10. The system according to claim 1 or 9, characterized in that: the hydrogen flow regulating device (5) adopts orifice plate type regulation or is regulated by a regulating valve.
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| CN201821870951.4U CN210037461U (en) | 2018-11-13 | 2018-11-13 | Inflation and deflation circulation test system of high-pressure hydrogen storage cylinder |
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| CN201821870951.4U CN210037461U (en) | 2018-11-13 | 2018-11-13 | Inflation and deflation circulation test system of high-pressure hydrogen storage cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470431A (en) * | 2018-11-13 | 2019-03-15 | 北京航天试验技术研究所 | A kind of inflation/deflation cyclic test system of high-pressure hydrogen storage cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470431A (en) * | 2018-11-13 | 2019-03-15 | 北京航天试验技术研究所 | A kind of inflation/deflation cyclic test system of high-pressure hydrogen storage cylinder |
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