CN113236968A - Pretreatment system and method for hydrogen cylinder detection - Google Patents
Pretreatment system and method for hydrogen cylinder detection Download PDFInfo
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- CN113236968A CN113236968A CN202110433053.2A CN202110433053A CN113236968A CN 113236968 A CN113236968 A CN 113236968A CN 202110433053 A CN202110433053 A CN 202110433053A CN 113236968 A CN113236968 A CN 113236968A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/002—Automated filling apparatus
- F17C5/007—Automated filling apparatus for individual gas tanks or containers, e.g. in vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/065—Arrangements for producing propulsion of gases or vapours
- F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A hydrogen cylinder detection pretreatment system and a treatment method belong to the technical field of gas cylinder detection. The hydrogen cylinder detection pretreatment system comprises a high-pressure hydrogen branch system, a low-pressure hydrogen branch system and a nitrogen supply branch system, wherein a first valve is connected with a valve group connected with a plurality of hydrogen cylinders to be detected, and the high-pressure hydrogen branch system and the low-pressure hydrogen branch system are connected with the first valve through a first branch pipe and the nitrogen supply branch system is connected with the first valve through a second branch pipe. The processing system is simple in structure and convenient to operate, and evacuation of residual hydrogen in the censorship hydrogen cylinder and replacement of nitrogen are realized and hydrogen reduction in the detected gas cylinder is realized by arranging the high-pressure hydrogen branch system, the low-pressure hydrogen branch system and the nitrogen supply branch system. Can effectively prevent danger in the process of hydrogen cylinder inspection and detection.
Description
Technical Field
The invention relates to a hydrogen cylinder detection pretreatment system and a treatment method, and belongs to the technical field of pressure container detection.
Background
With the development of economy, hydrogen is widely applied to various industries as a clean and environment-friendly fuel. With the increase in the amount of hydrogen gas used, a variety of hydrogen storage cylinders have appeared, and the use of cylinders as storage vessels for compressed gas has become increasingly widespread. As a pressure container, hydrogen is inflammable and explosive, and once an accident happens during the transportation, use and repeated reloading of the gas cylinder, immeasurable loss and serious consequences can be caused. In order to enforce the safe code use of the cylinders, the cylinders must be annual inspected according to the relevant regulations.
Disclosure of Invention
The invention provides a hydrogen cylinder detection pretreatment system, which is used for evacuating hydrogen in a hydrogen cylinder to be detected, replacing nitrogen and reducing the detected hydrogen in the hydrogen cylinder. And danger in the subsequent detection process due to hydrogen residue in the gas cylinder is prevented.
The technical scheme adopted by the invention is as follows: a hydrogen cylinder detection pretreatment system comprises a high-pressure hydrogen branch system, wherein a first valve is connected with a valve group connected with a plurality of hydrogen cylinders to be detected; the high-pressure hydrogen branch system and the low-pressure hydrogen branch system are connected with a first valve through a first branch pipe and the nitrogen supply branch system through a second branch pipe;
the high-pressure hydrogen branch system comprises a hydrogen compressor and a high-pressure hydrogen storage tank, wherein one path of the high-pressure hydrogen storage tank provided with a pressure gauge passes through a fourth valve, and the other path of the high-pressure hydrogen storage tank sequentially passes through the third valve, the hydrogen compressor and a second valve and is connected with the first branch pipe; the outlet of the hydrogen compressor is connected with the first branch pipe through a twelfth valve, and an eleventh valve is arranged on the pipe sections of the second valve and the twelfth valve, which are connected with the first branch pipe;
the low-pressure hydrogen branch system comprises a vacuum pump and a low-pressure storage tank, and one path of the low-pressure storage tank provided with a pressure gauge is connected with the first branch pipe through the vacuum pump and a fifth valve; the other path is connected with the inlet of a hydrogen compressor in the high-pressure hydrogen branch system through a seventh valve, and the other path is connected with an ejector through an eighth valve;
the nitrogen supply branch system comprises a high-pressure nitrogen tank provided with a pressure gauge and a safety valve, and one path of the high-pressure nitrogen tank is connected with the second branch pipe through a ninth valve and a one-way valve; the other path is connected with an ejector in the low-pressure hydrogen branch system through a tenth valve, and a branch behind the tenth valve is connected with the lower end of the low-pressure storage tank in the low-pressure hydrogen branch system through a sixth valve;
the first branch pipe is provided with a pressure gauge, the second branch pipe is provided with a pressure sensor, and the valve group is provided with a relief valve.
The invention has the beneficial effects that: the hydrogen cylinder detection pretreatment system comprises a high-pressure hydrogen branch system, a low-pressure hydrogen branch system and a nitrogen supply branch system, wherein a first valve is connected with a valve group connected with a plurality of hydrogen cylinders to be detected, and the high-pressure hydrogen branch system and the low-pressure hydrogen branch system are connected with the first valve through a first branch pipe and the nitrogen supply branch system is connected with the first valve through a second branch pipe. The processing system is simple in structure and convenient to operate, and evacuation of residual hydrogen in the censorship hydrogen cylinder and replacement of nitrogen are realized and hydrogen reduction in the detected gas cylinder is realized by arranging the high-pressure hydrogen branch system, the low-pressure hydrogen branch system and the nitrogen supply branch system. Can effectively prevent danger in the process of hydrogen cylinder inspection and detection.
Drawings
Fig. 1 is a schematic structural view of a hydrogen cylinder detection pretreatment system.
In the figure: 1. the hydrogen detection device comprises a valve group, a drain valve 1a, a discharge valve 1b, a hydrogen cylinder to be detected, a first valve 2, a first branch pipe 3a, a first pressure gauge 4, a second branch pipe 4a, a pressure sensor 5, a hydrogen compressor 5a, a second valve 6, a high-pressure hydrogen storage tank 6a, a third valve 6b, a fourth valve 7, a vacuum pump 7a, a fifth valve 8, a low-pressure storage tank 8a, a sixth valve 8b, a seventh valve 9, an ejector 9a, an eighth valve 10, a high-pressure nitrogen tank 10a, a check valve 10b, a ninth valve 10c, a tenth valve 11, an eleventh valve 11a and a twelfth valve.
Detailed Description
The invention is further described with reference to the accompanying drawings and examples.
Fig. 1 shows a schematic structural diagram of a hydrogen cylinder pre-detection processing system, in which the hydrogen cylinder pre-detection processing system includes a high-pressure hydrogen branch system, a low-pressure hydrogen branch system and a nitrogen gas supply branch system, a first valve 2 is connected with a valve group 1 connected with a plurality of hydrogen cylinders 1b to be detected, and the high-pressure hydrogen branch system and the low-pressure hydrogen branch system are connected with the first valve 2 through a first branch pipe 3 and the nitrogen gas supply branch system through a second branch pipe 4. The high-pressure hydrogen branch system comprises a hydrogen compressor 5 and a high-pressure hydrogen storage tank 6, one path of the high-pressure hydrogen storage tank 6 provided with a pressure gauge passes through a fourth valve 6b, and the other path of the high-pressure hydrogen storage tank passes through a third valve 6a, the hydrogen compressor 5 and a second valve 5a in sequence and is connected with the first branch pipe 3. The outlet of the hydrogen compressor 5 is connected with the first branch pipe 3 through a twelfth valve 11a, and an eleventh valve 11 is arranged on the pipe sections of the second valve 5a and the twelfth valve 11a connected with the first branch pipe 3; the low-pressure hydrogen branch system comprises a vacuum pump 7 and a low-pressure storage tank 8, and one path of the low-pressure storage tank 8 provided with a pressure gauge is connected with the first branch pipe 3 through the vacuum pump 7 and a fifth valve 7 a; the other path is connected with the inlet of the hydrogen compressor 5 in the high-pressure hydrogen branch system through a seventh valve 8b, and the other path is connected with the ejector 9 through an eighth valve 9 a.
The nitrogen supply branch system comprises a high-pressure nitrogen tank 10 provided with a pressure gauge and a safety valve, and one path of the high-pressure nitrogen tank 10 is connected with the second branch pipe 4 through a ninth valve 10b and a one-way valve 10 a; the other path is connected with an ejector 9 in the low-pressure hydrogen branch system through a tenth valve 10c, and a branch behind the tenth valve 10c is connected with the lower end of a low-pressure storage tank 8 in the low-pressure hydrogen branch system through a sixth valve 8 a. The first branch pipe 3 is provided with a pressure gauge 3a, the second branch pipe 4 is provided with a pressure sensor 4a, and the valve group 1 is provided with a relief valve 1 a.
The hydrogen compressor 5 adopts a piston compressor driven by an explosion-proof motor. The detection of the hydrogen cylinder to be detected comprises a hydrostatic test, a flaw detection and the like, and when hydrogen is discharged randomly or residual hydrogen is dangerous in the hydrogen cylinder, the hydrogen in the hydrogen cylinder to be detected needs to be recycled firstly and then injected into the hydrogen cylinder to be detected again after the detection.
In order to ensure the operation safety, the working process of the hydrogen cylinder detection pretreatment system comprises the following steps:
a. firstly, filling nitrogen into a high-pressure nitrogen tank 10 to a specified pressure, closing all valves in the system, and then connecting a hydrogen cylinder 1b to be detected with a valve group 1;
b. opening a valve, a first valve 2, an eleventh valve 11 and a fourth valve 6b on the valve group 1 corresponding to the hydrogen cylinder 1b to be detected, and enabling the high-pressure hydrogen in the hydrogen cylinder 1b to be detected to enter a high-pressure hydrogen storage tank 6;
c. after the pressure is balanced, the fourth valve 6b is closed, the second valve 5a and the third valve 6a are opened, the hydrogen compressor 5 is started to pump out the residual hydrogen in the hydrogen cylinder 1b to be detected and pressurize the residual hydrogen to be sent to the high-pressure hydrogen storage tank 6, and then the second valve 5a, the third valve 6a and the hydrogen compressor 5 are closed;
d. opening an eighth valve 9a, then opening a tenth valve 10c and a sixth valve 8a, allowing high-pressure nitrogen in a high-pressure nitrogen tank 10 to enter an ejector 9 to inject air in a low-pressure storage tank 8, allowing part of the nitrogen to enter the low-pressure storage tank 8 through the sixth valve 8a to exchange air, and closing the sixth valve 8a, the eighth valve 9a and the tenth valve 10c in sequence when the low pressure in the low-pressure storage tank 8 is kept;
e. opening the fifth valve 7a, starting the vacuum pump 7, pumping out the residual hydrogen in the hydrogen cylinder 1b to be detected, sending the residual hydrogen into the low-pressure storage tank 8 until the pressure in the hydrogen cylinder 1b to be detected is reduced to-0.01 to-0.025 MPa, and closing the fifth valve 7a and the vacuum pump 7;
f. opening a ninth valve 10b, introducing nitrogen in the high-pressure nitrogen tank 10 into a hydrogen cylinder 1b to be detected, and closing the first valve 2 and the ninth valve 10b after pressure is balanced;
g. opening the seventh valve 8b and the third valve 6a, starting the hydrogen compressor 5, pumping out and pressurizing the low-pressure hydrogen in the low-pressure storage tank 8, sending the low-pressure hydrogen to the high-pressure hydrogen storage tank 6, and closing the seventh valve 8b, the third valve 6a and the hydrogen compressor 5;
h. opening the relief valve 1a to completely discharge the nitrogen in the hydrogen cylinder 1b to be detected into the air, closing the relief valve 1a and a valve corresponding to the hydrogen cylinder 1b to be detected on the valve group 1, and inspecting the hydrogen cylinder 1b to be detected;
i. reconnecting the hydrogen cylinder 1b to be detected which is detected with the valve group 1, opening a valve corresponding to the hydrogen cylinder 1b to be detected, the first valve 2 and the fifth valve 7a on the valve group 1, starting the vacuum pump 7 to pump out the air in the hydrogen cylinder 1b to be detected until the pressure in the hydrogen cylinder 1b to be detected is reduced to-0.01 to-0.025 MPa, and closing the fifth valve 7a and the vacuum pump 7;
j. opening the ninth valve 10b, introducing the nitrogen in the high-pressure nitrogen tank 10 into the hydrogen cylinder 1b to be detected, closing the ninth valve 10b after the pressure is balanced, opening the fifth valve 7a, starting the vacuum pump 7 to pump out the nitrogen in the hydrogen cylinder 1b to be detected until the pressure in the hydrogen cylinder 1b to be detected is reduced to-0.01 to-0.025 MPa, and closing the fifth valve 7a and the vacuum pump 7;
k. opening the fourth valve 6b and the eleventh valve 11 to allow the hydrogen in the high-pressure hydrogen storage tank 6 to be automatically filled into the hydrogen cylinder 1b to be detected until the air pressure is balanced; and closing the eleventh valve 11, opening the second valve 5a and the twelfth valve 11a, starting the hydrogen compressor 5, filling the residual hydrogen in the high-pressure hydrogen storage tank 6 into the hydrogen cylinder 1b to be detected, finally closing the first valve 2 and the valve on the valve group 1 corresponding to the hydrogen cylinder 1b to be detected, and removing the hydrogen cylinder 1b to be detected.
This hydrogen cylinder detects pretreatment system accessible gas cylinder connecting pipe inserts a plurality ofly simultaneously and waits to examine the gas cylinder or wait to examine gas cylinder group, can handle a plurality of gas cylinders simultaneously. The vacuum pump is a pump which is not influenced by hydrogen and water vapor, and the low-pressure storage tank is made of stainless steel or non-metal materials.
Claims (2)
1. A hydrogen cylinder detection pretreatment system comprises a high-pressure hydrogen branch system, wherein a first valve (2) is connected with a valve group (1) connected with a plurality of hydrogen cylinders (1 b) to be detected; the method is characterized in that: the device also comprises a low-pressure hydrogen branch system and a nitrogen supply branch system, wherein the high-pressure hydrogen branch system and the low-pressure hydrogen branch system are connected with the first valve (2) through a first branch pipe (3) and the nitrogen supply branch system through a second branch pipe (4);
the high-pressure hydrogen branch system comprises a hydrogen compressor (5) and a high-pressure hydrogen storage tank (6), one path of the high-pressure hydrogen storage tank (6) provided with a pressure gauge passes through a fourth valve (6 b), and the other path of the high-pressure hydrogen storage tank sequentially passes through a third valve (6 a), the hydrogen compressor (5) and a second valve (5 a) and is connected with the first branch pipe (3); an outlet of the hydrogen compressor (5) is connected with the first branch pipe (3) through a twelfth valve (11 a), and an eleventh valve (11) is arranged on a pipe section where the second valve (5 a) and the twelfth valve (11 a) are connected with the first branch pipe (3);
the low-pressure hydrogen branch system comprises a vacuum pump (7) and a low-pressure storage tank (8), and one path of the low-pressure storage tank (8) provided with a pressure gauge is connected with the first branch pipe (3) through the vacuum pump (7) and a fifth valve (7 a); the other path is connected with the inlet of a hydrogen compressor (5) in the high-pressure hydrogen branch system through a seventh valve (8 b), and the other path is connected with an ejector (9) through an eighth valve (9 a);
the nitrogen supply branch system comprises a high-pressure nitrogen tank (10) provided with a pressure gauge and a safety valve, and one path of the high-pressure nitrogen tank (10) is connected with the second branch pipe (4) through a ninth valve (10 b) and a one-way valve (10 a); the other path is connected with an ejector (9) in the low-pressure hydrogen branch system through a tenth valve (10 c), and a branch behind the tenth valve (10 c) is connected with the lower end of a low-pressure storage tank (8) in the low-pressure hydrogen branch system through a sixth valve (8 a);
be equipped with manometer (3 a) on first branch pipe (3), be equipped with pressure sensor (4 a) on second branch pipe (4), be equipped with bleeder valve (1 a) on valves (1).
2. The processing method of the pretreatment system for hydrogen cylinder detection as set forth in claim 1, wherein the steps of:
a. firstly, filling nitrogen into a high-pressure nitrogen tank (10) to a specified pressure, closing all valves in the system, and then connecting a hydrogen cylinder (1 b) to be detected with a valve group (1);
b. opening a valve, a first valve (2), an eleventh valve (11) and a fourth valve (6 b) on the valve group (1) corresponding to the hydrogen cylinder (1 b) to be detected, and enabling high-pressure hydrogen in the hydrogen cylinder (1 b) to be detected to enter a high-pressure hydrogen storage tank (6);
c. after pressure is balanced, the fourth valve (6 b) is closed, the second valve (5 a) and the third valve (6 a) are opened, the hydrogen compressor (5) is started to pump out residual hydrogen in the hydrogen cylinder (1 b) to be detected and pressurize the residual hydrogen to be sent to the high-pressure hydrogen storage tank (6), and then the second valve (5 a), the third valve (6 a) and the hydrogen compressor (5) are closed;
d. opening an eighth valve (9 a), then opening a tenth valve (10 c) and a sixth valve (8 a), enabling high-pressure nitrogen in a high-pressure nitrogen tank (10) to enter an ejector (9) to inject air in a low-pressure storage tank (8), enabling part of the nitrogen to enter the low-pressure storage tank (8) through the sixth valve (8 a) to exchange air, and sequentially closing the sixth valve (8 a), the eighth valve (9 a) and the tenth valve (10 c) when low pressure is kept in the low-pressure storage tank (8);
e. opening a fifth valve (7 a), starting a vacuum pump (7), pumping out residual hydrogen in the hydrogen cylinder (1 b) to be detected, sending the residual hydrogen into a low-pressure storage tank (8) until the pressure in the hydrogen cylinder (1 b) to be detected is reduced to-0.01 to-0.025 MPa, and closing the fifth valve (7 a) and the vacuum pump (7);
f. opening a ninth valve (10 b), introducing nitrogen in a high-pressure nitrogen tank (10) into a hydrogen cylinder (1 b) to be detected, and closing the first valve (2) and the ninth valve (10 b) after pressure is balanced;
g. opening the seventh valve (8 b) and the third valve (6 a), starting the hydrogen compressor (5), pumping out and pressurizing the low-pressure hydrogen in the low-pressure storage tank (8), sending the low-pressure hydrogen to the high-pressure hydrogen storage tank (6), and closing the seventh valve (8 b), the third valve (6 a) and the hydrogen compressor (5);
h. opening the relief valve (1 a) to completely discharge nitrogen in the hydrogen cylinder (1 b) to be detected into the air, closing the relief valve (1 a) and a valve corresponding to the hydrogen cylinder (1 b) to be detected on the valve group (1), and checking the hydrogen cylinder (1 b) to be detected;
i. reconnecting the hydrogen cylinder (1 b) to be detected which is detected with the valve group (1), opening a valve, a first valve (2) and a fifth valve (7 a) which are arranged on the valve group (1) and correspond to the hydrogen cylinder (1 b) to be detected, starting a vacuum pump (7) to pump out air in the hydrogen cylinder (1 b) to be detected until the pressure in the hydrogen cylinder (1 b) to be detected is reduced to-0.01 to-0.025 MPa, and closing the fifth valve (7 a) and the vacuum pump (7);
j. opening a ninth valve (10 b), enabling nitrogen in a high-pressure nitrogen tank (10) to enter a hydrogen cylinder (1 b) to be detected, closing the ninth valve (10 b) after pressure is balanced, opening a fifth valve (7 a), starting a vacuum pump (7) to pump out the nitrogen in the hydrogen cylinder (1 b) to be detected until the pressure in the hydrogen cylinder (1 b) to be detected is reduced to-0.01 to-0.025 MPa, and closing the fifth valve (7 a) and the vacuum pump (7);
k. opening the fourth valve (6 b) and the eleventh valve (11) to automatically fill hydrogen in the high-pressure hydrogen storage tank (6) into the hydrogen cylinder (1 b) to be detected until the air pressure is balanced; closing the eleventh valve (11), opening the second valve (5 a) and the twelfth valve (11 a), starting the hydrogen compressor (5), filling the residual hydrogen in the high-pressure hydrogen storage tank (6) into the hydrogen cylinder to be detected (1 b), finally closing the first valve (2) and the valve on the valve group (1) corresponding to the hydrogen cylinder to be detected (1 b), and removing the hydrogen cylinder to be detected (1 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433053.2A CN113236968A (en) | 2021-04-22 | 2021-04-22 | Pretreatment system and method for hydrogen cylinder detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110433053.2A CN113236968A (en) | 2021-04-22 | 2021-04-22 | Pretreatment system and method for hydrogen cylinder detection |
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| CN202110433053.2A Pending CN113236968A (en) | 2021-04-22 | 2021-04-22 | Pretreatment system and method for hydrogen cylinder detection |
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| CN111156405A (en) * | 2018-11-07 | 2020-05-15 | 北汽福田汽车股份有限公司 | Hydrogen filling equipment |
| CN112524479A (en) * | 2020-11-27 | 2021-03-19 | 广州特种承压设备检测研究院 | Hydrogen storage cylinder gas replacement system, method, device and storage medium |
| CN112576927A (en) * | 2020-11-27 | 2021-03-30 | 广州特种承压设备检测研究院 | Hydrogen replacement system |
| CN112629781A (en) * | 2021-01-14 | 2021-04-09 | 南京洛岸池贸易有限公司 | Equipment for detecting leakage of liquid oxygen storage tank |
-
2021
- 2021-04-22 CN CN202110433053.2A patent/CN113236968A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002013698A (en) * | 2000-06-30 | 2002-01-18 | Iwatani Internatl Corp | Method for switching take-out container at gas supply equipment |
| CN101782463A (en) * | 2009-01-15 | 2010-07-21 | 北京航空航天大学 | Full-flow test bed hydrogen system |
| CN202432242U (en) * | 2012-02-13 | 2012-09-12 | 上海敏泰液压件有限公司 | High pressure gas transferring detection device |
| CN208014810U (en) * | 2017-12-20 | 2018-10-26 | 郑州宇通客车股份有限公司 | A kind of on-board hydrogen system |
| CN111156405A (en) * | 2018-11-07 | 2020-05-15 | 北汽福田汽车股份有限公司 | Hydrogen filling equipment |
| CN112524479A (en) * | 2020-11-27 | 2021-03-19 | 广州特种承压设备检测研究院 | Hydrogen storage cylinder gas replacement system, method, device and storage medium |
| CN112576927A (en) * | 2020-11-27 | 2021-03-30 | 广州特种承压设备检测研究院 | Hydrogen replacement system |
| CN112629781A (en) * | 2021-01-14 | 2021-04-09 | 南京洛岸池贸易有限公司 | Equipment for detecting leakage of liquid oxygen storage tank |
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Effective date of abandoning: 20221216 |