CN113483259B - Mixed filling system of liquid hydrogen storage type hydrogen filling station - Google Patents
Mixed filling system of liquid hydrogen storage type hydrogen filling station Download PDFInfo
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- CN113483259B CN113483259B CN202110806686.3A CN202110806686A CN113483259B CN 113483259 B CN113483259 B CN 113483259B CN 202110806686 A CN202110806686 A CN 202110806686A CN 113483259 B CN113483259 B CN 113483259B
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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
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
- F17C5/04—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases requiring the use of refrigeration, e.g. filling with helium or 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a mixed filling system of a liquid hydrogen storage type hydrogen filling station, which comprises a 35MPa hydrogen filling unit and a 70MPa hydrogen filling unit which are connected with a liquid hydrogen storage tank, wherein the two filling units respectively comprise a liquid hydrogen pump communicated with the liquid hydrogen storage tank, a fluid separator for changing the flow direction and the flow rate of hydrogen, and a high-pressure vaporizer, and the 35MPa hydrogen filling unit also comprises: the device comprises a 90MPa buffer bottle group, a 45MPa buffer bottle group and a first hydrogenation machine; the 70MPa hydrogen filling unit also comprises: a second liquid hydrogen conveying pipe, a high-pressure hydrogen conveying pipe, a gas-liquid mixer and a second hydrogenation machine. The invention has the advantages that: the hydrogen storage capacity is large, the energy consumption is low, and the filling requirements of hydrogen in different forms can be met.
Description
Technical Field
The invention relates to the technical field of liquid hydrogen hydrogenation stations, in particular to a mixed filling system of a liquid hydrogen storage type hydrogenation station.
Background
The hydrogen filling station is mainly divided into a high-pressure hydrogen storage hydrogen filling station and a liquid hydrogen storage hydrogen filling station, at present, the technology of the foreign liquid hydrogen storage hydrogen filling station is mature, and the liquid hydrogen filling station is used for filling 70MPa vehicle-mounted hydrogen storage bottles. The domestic hydrogen filling station is mainly a high-pressure hydrogen storage hydrogen filling station, most of hydrogen fuel cell automobiles only can fill 35MPa vehicle-mounted hydrogen storage bottles, the filling technology of the 70MPa vehicle-mounted hydrogen storage bottles is still in the research and development stage, and the application in the hydrogen filling station is less. The defects of the prior hydrogenation station adopting high-pressure technology for hydrogen storage are as follows: 1. the hydrogen storage capacity is low, the daily hydrogen filling amount is 200 kg/day, the filling requirement of the vehicle during small-scale demonstration operation can be basically met, and the increasing filling amount requirement along with the development of the hydrogen fuel cell automobile industry can not be met; 2. only 35MPa of high-pressure hydrogen can be filled, the filling form is single, and the mixed filling of 35MPa and 70MPa of hydrogen storage cylinders of passenger vehicles in the current market cannot be considered; 3. the hydrogen gas at the filling outlet needs to be cooled, and the energy consumption of the hydrogen filling station is large.
Disclosure of Invention
The invention aims to provide a mixed filling system of a liquid hydrogen storage type hydrogen filling station, which can simultaneously meet the filling requirements of hydrogen storage bottles of 35MPa and 70MPa hydrogen fuel cell vehicles, aiming at the defects of the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a liquid hydrogen stores up hydrogen type hydrogen station and mixes filling system which characterized in that: the system comprises a 35MPa hydrogen filling unit and a 70MPa hydrogen filling unit which are connected with a liquid hydrogen storage tank for a station, wherein the 35MPa hydrogen filling unit comprises a first liquid hydrogen conveying pipe, a high-pressure vaporizer, a 90MPa buffer bottle group, a 45MPa buffer bottle group and a first hydrogenation machine which are sequentially connected, and the input end of the first liquid hydrogen conveying pipe is communicated with the liquid hydrogen storage tank for the station through a liquid hydrogen pump; the 70MPa hydrogen filling unit comprises a second liquid hydrogen conveying pipe, a high-pressure hydrogen conveying pipe, a gas-liquid mixer and a second hydrogenation machine, wherein the input end of the second liquid hydrogen conveying pipe is communicated with a station liquid hydrogen storage tank through a liquid hydrogen pump, the input end of the high-pressure hydrogen conveying pipe is communicated with the output end of the high-pressure hydrogen conveying pipe, the output ends of the second liquid hydrogen conveying pipe and the high-pressure vaporizer are communicated with the input end of the gas-liquid mixer, and the output end of the gas-liquid mixer is connected with the second hydrogenation machine.
Furthermore, the first liquid hydrogen conveying pipe and the second liquid hydrogen conveying pipe are both communicated with the liquid hydrogen pump through a fluid separator, and the fluid separator can control hydrogen flow in the first liquid hydrogen conveying pipe and the second liquid hydrogen conveying pipe.
Furthermore, a pressure reducing valve is arranged between the 90MPa buffer bottle group and the 45MPa buffer bottle group.
Furthermore, a first stop valve and a second stop valve are respectively arranged on the second liquid hydrogen conveying pipe and the high-pressure hydrogen conveying pipe.
Furthermore, the 90MPa buffer cylinder group and the 45MPa buffer cylinder group are formed by connecting a plurality of high-pressure hydrogen storage cylinders in parallel and are divided into a high pressure stage, a medium pressure stage and a low pressure stage, and when the pressure of hydrogen in the 45MPa buffer cylinder group is not enough to fill, the 90MPa buffer cylinder group supplies air to the 45MPa buffer cylinder group to reach 45MPa.
Furthermore, the high-pressure vaporizer consists of an environment heat exchanger and a heat exchanger, and the temperature of hydrogen at the outlet end of the high-pressure vaporizer is 293K.
Compared with the prior art, the invention has the beneficial effects that: 1. liquid hydrogen is used as a hydrogen storage means of the hydrogen station, so that the filling capacity of the hydrogen station is greatly improved, and can reach 1000 kg/day compared with the common filling capacity of the high-pressure hydrogen storage hydrogen station of 200 kg/day; 2. the hydrogen at the filling outlet does not need to be pre-cooled, so that the energy consumption of the hydrogen filling station is reduced; 3. meanwhile, a 35MPa hydrogen filling unit and a 70MPa hydrogen filling unit are adopted, and the mixed filling of 35MPa and 70MPa passenger vehicle hydrogen storage cylinders in the current market is considered.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of control logic according to the present invention.
Wherein: 1-a liquid hydrogen storage tank for the station; 2-liquid hydrogen pump; 3-a fluid separator; 4-a high pressure vaporizer; a buffer bottle group with 5-90 MPa; 6-a pressure reducing valve; a buffer bottle group of 7-45 MPa; 8-a first hydrotreater; 9-35MPa vehicle-mounted hydrogen storage cylinder; 10-a first stop valve; 11-a second stop valve; 12-gas-liquid mixer; 13-a second hydrotreater; 14-70MPa vehicle-mounted hydrogen storage cylinder; 15-a first liquid hydrogen delivery pipe; 16-a second liquid hydrogen conveying pipe; 17-high pressure hydrogen delivery pipe.
Detailed Description
For the understanding of the present invention, the following detailed description will be given with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Fig. 1 shows a mixed filling system of a liquid hydrogen storage type hydrogen filling station, which includes a 35MPa hydrogen filling unit and a 70MPa hydrogen filling unit connected to a station liquid hydrogen storage tank 1, wherein the 35MPa hydrogen filling unit includes a first liquid hydrogen delivery pipe 15, a high-pressure vaporizer 4, a 90MPa buffer bottle group 5, a 45MPa buffer bottle group 7 and a first hydrogen adding machine 8 which are connected in sequence, and an input end of the first liquid hydrogen delivery pipe 15 is communicated with the station liquid hydrogen storage tank 1 through a liquid hydrogen pump 2; the 70MPa hydrogen filling unit comprises a second liquid hydrogen conveying pipe 16, a high-pressure hydrogen conveying pipe 17, a gas-liquid mixer 12 and a second hydrogenation machine 13, wherein the input end of the second liquid hydrogen conveying pipe 16 is communicated with the station liquid hydrogen storage tank 1 through a liquid hydrogen pump 2, the input end of the high-pressure hydrogen conveying pipe 17 is communicated with the output end of the high-pressure vaporizer 4, the output ends of the second liquid hydrogen conveying pipe 16 and the high-pressure hydrogen conveying pipe 17 are communicated with the input end of the gas-liquid mixer 12, the output end of the gas-liquid mixer 12 is connected with the second hydrogenation machine 13, the first hydrogenation machine 8 fills the 35MPa vehicle-mounted hydrogen storage cylinder 9, and the second hydrogenation machine 13 fills the 70MPa vehicle-mounted hydrogen storage cylinder 14.
As a specific embodiment of the present invention, it is preferable that the first liquid hydrogen conveying pipe 15 and the second liquid hydrogen conveying pipe 16 are both communicated with the liquid hydrogen pump 2 through the fluid separator 3, and the fluid separator 3 can control hydrogen flow rates in the first liquid hydrogen conveying pipe 15 and the second liquid hydrogen conveying pipe 16; a pressure reducing valve 6 is arranged between the 90MPa buffer bottle group 5 and the 45MPa buffer bottle group 7; a first stop valve 10 and a second stop valve 11 are respectively arranged on the second liquid hydrogen conveying pipe 16 and the high-pressure hydrogen conveying pipe 17; the 90MPa buffer bottle group 5 and the 45MPa buffer bottle group 7 are formed by connecting a plurality of high-pressure hydrogen storage bottles in parallel and are divided into three pressure levels, namely high pressure, medium pressure, low pressure and medium pressure, and when the pressure of hydrogen in the 45MPa buffer bottle group 7 is not enough to fill, the 90MPa buffer bottle group 5 supplies air to the 45MPa buffer bottle group 7 to 45MPa; the high-pressure vaporizer 4 consists of an environment heat exchanger and a heat exchanger, and the temperature of hydrogen at the outlet end of the high-pressure vaporizer 4 is 293K.
Referring to fig. 2, the specific working process and principle of the present embodiment are described as follows:
the liquid hydrogen temperature in the station liquid hydrogen storage tank 1 is usually 20K, the liquid hydrogen is pumped out by the liquid hydrogen pump 2, and the liquid hydrogen is separated by the fluid separator 3 and is respectively conveyed to the first liquid hydrogen conveying pipe 15 and the second liquid hydrogen conveying pipe 16. The temperature of the hydrogen in the second liquid hydrogen conveying pipe 16 is about 50K, and the pressure is 90MPa; the temperature of the hydrogen in the first liquid hydrogen delivery pipe 15 is raised to 293K through the high-pressure vaporizer 4, the pressure is 90MPa, the raised hydrogen can be stored in the 90MPa buffer cylinder group 5, and also can be delivered to the gas-liquid mixer 12, the hydrogen delivered to the gas-liquid mixer 12 is mixed with the low-temperature high-pressure liquid hydrogen delivered from the second liquid hydrogen delivery pipe 16, and 233K and 85MPa hydrogen is obtained, so that the 70MPa vehicle-mounted hydrogen storage cylinder 14 is filled through the second hydrogenation machine 13.
The 35MPa hydrogen filling unit fills the 35MPa vehicle-mounted hydrogen storage cylinder 9 through the 45MPa buffer cylinder group 7 through the first hydrogenation machine 8. Stopping filling when the filling pressure difference is less than 2MPa, supplementing air to a 45MPa buffer bottle group 7 after the 90MPa buffer bottle group 5 passes through a pressure reducing valve 6, adjusting the fluid separator 3 when the pressure in the 90MPa buffer bottle group 5 is not enough to fill, and filling the 90MPa buffer bottle group 5 through the liquid hydrogen pump 2.
In the working principle of the above-mentioned mixed filling system of the liquid hydrogen storage type hydrogen filling station, the opening and closing of the valve need to be controlled, and the control logic is as shown in fig. 2. The key of the control logic is whether the pressure in the 90MPa buffer cylinder group 5 is enough to supplement air for the 45MPa buffer cylinder group 7, if not, the first stop valve 10 and the second stop valve 11 need to be closed, the 90MPa buffer cylinder group 5 is filled, and in the filling process, the 70MPa vehicle-mounted hydrogen storage cylinder 14 cannot be filled.
As a specific example, 2 62L 70MPa vehicle-mounted hydrogen storage cylinders 14 are filled, the filling time is 3min, the filling mass is 4.844kg, the total flow rate is 1.615kg/min, the hydrogen temperature in the second liquid hydrogen delivery pipe 16 is 50K, the hydrogen temperature in the high-pressure hydrogen delivery pipe 17 is 293K, the temperature of the two after mixing in the gas-liquid mixer 12 is 233K, the flow rate of the second liquid hydrogen delivery pipe 16 is 0.455kg/min, and the flow rate of the high-pressure hydrogen delivery pipe 17 is 1.153kg/min.
The above embodiments are merely illustrative of the technical concept and structural features of the present invention, and are intended to be implemented by those skilled in the art, but the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should fall within the scope of the present invention.
Claims (6)
1. The utility model provides a liquid hydrogen stores up hydrogen type refueling station and mixes filling system which characterized in that: the system comprises a 35MPa hydrogen filling unit and a 70MPa hydrogen filling unit which are connected with a station liquid hydrogen storage tank (1), wherein the 35MPa hydrogen filling unit comprises a first liquid hydrogen conveying pipe (15), a high-pressure vaporizer (4), a 90MPa buffer bottle group (5), a 45MPa buffer bottle group (7) and a first hydrogenation machine (8) which are sequentially connected, and the input end of the first liquid hydrogen conveying pipe (15) is communicated with the station liquid hydrogen storage tank (1) through a liquid hydrogen pump (2); the 70MPa hydrogen filling unit comprises a second liquid hydrogen conveying pipe (16), a high-pressure hydrogen conveying pipe (17), a gas-liquid mixer (12) and a second hydrogenation machine (13), the input end of the second liquid hydrogen conveying pipe (16) is communicated with the station liquid hydrogen storage tank (1) through a liquid hydrogen pump (2), the input end of the high-pressure hydrogen conveying pipe (17) is communicated with the output end of the high-pressure vaporizer (4), the output ends of the second liquid hydrogen conveying pipe (16) and the high-pressure hydrogen conveying pipe (17) are communicated with the input end of the gas-liquid mixer (12), the output end of the gas-liquid mixer (12) is connected with the second hydrogenation machine (13), the temperature of liquid hydrogen in the station liquid hydrogen storage tank (1) is 20K, the temperature of hydrogen in the second liquid hydrogen conveying pipe (16) is 50K, the pressure is 90MPa, the temperature of hydrogen in the first liquid hydrogen conveying pipe (15) is increased to 293K through the high-pressure vaporizer (4), the pressure is 90MPa, the increased hydrogen can be stored in the 90MPa buffer bottle group (5), so that the first hydrogenation machine (8) can fill the 35MPa vehicle-mounted hydrogen storage cylinder (9) and can also convey the hydrogen storage cylinder into the gas-liquid mixer (12), the hydrogen conveyed to the gas-liquid mixer (12) is mixed with low-temperature high-pressure liquid hydrogen conveyed from a second liquid hydrogen conveying pipe (16) to obtain hydrogen with the temperature of 233K and the pressure of 85MPa, thereby the second hydrogenation machine (13) is used for filling the 70MPa vehicle-mounted hydrogen storage cylinder (14).
2. The hybrid filling system of the liquid hydrogen storage type hydrogen filling station according to claim 1, characterized in that: the first liquid hydrogen conveying pipe (15) and the second liquid hydrogen conveying pipe (16) are communicated with the liquid hydrogen pump (2) through a fluid separator (3), and the fluid separator (3) can control hydrogen flow in the first liquid hydrogen conveying pipe (15) and the second liquid hydrogen conveying pipe (16).
3. The hybrid refueling system of the liquid hydrogen storage type refueling station as claimed in claim 2, wherein: a pressure reducing valve (6) is arranged between the 90MPa buffer bottle group (5) and the 45MPa buffer bottle group (7).
4. The hybrid refueling system of the liquid hydrogen storage type refueling station as claimed in claim 3, wherein: and a first stop valve (10) and a second stop valve (11) are respectively arranged on the second liquid hydrogen conveying pipe (16) and the high-pressure hydrogen conveying pipe (17).
5. The hybrid filling system of the liquid hydrogen storage type hydrogen filling station according to claim 4, characterized in that: the 90MPa buffer bottle group (5) and the 45MPa buffer bottle group (7) are both formed by connecting a plurality of high-pressure hydrogen storage bottles in parallel and are divided into three pressure levels, namely high pressure, medium pressure and low pressure, and when the pressure of hydrogen in the 45MPa buffer bottle group (7) is not enough to fill, the 90MPa buffer bottle group (5) is used for supplementing the 45MPa buffer bottle group (7) with air to 45MPa.
6. The hybrid filling system of the liquid hydrogen storage type hydrogen filling station according to claim 5, characterized in that: the high-pressure vaporizer (4) consists of an environment heat exchanger and a heat exchanger, and the temperature of hydrogen at the outlet end of the high-pressure vaporizer (4) is 293K.
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| CN202110806686.3A CN113483259B (en) | 2021-07-16 | 2021-07-16 | Mixed filling system of liquid hydrogen storage type hydrogen filling station |
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| CN202110806686.3A CN113483259B (en) | 2021-07-16 | 2021-07-16 | Mixed filling system of liquid hydrogen storage type hydrogen filling station |
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| CN113483259A CN113483259A (en) | 2021-10-08 |
| CN113483259B true CN113483259B (en) | 2022-12-09 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230279995A1 (en) * | 2022-03-03 | 2023-09-07 | China Energy Investment Corporation Limited | Hydrogen refueling station and system, and method of using the same |
| CN114688445B (en) * | 2022-04-25 | 2023-10-27 | 液空厚普氢能源装备有限公司 | Hydrogen liquid hydrogen hydrogenation station |
| CN115164097B (en) * | 2022-05-26 | 2023-12-12 | 合肥通用机械研究院有限公司 | Filling system and filling method for high-flow continuous liquid hydrogen filling station |
| US20230392753A1 (en) * | 2022-06-07 | 2023-12-07 | Plug Power Inc | Systems and methods for dispensing cryogenic liquid fuel as a gas at controlled temperature using cryogenic fluid |
| CN114877249A (en) * | 2022-06-08 | 2022-08-09 | 液空厚普氢能源装备有限公司 | 70MPa high-flow hydrogenation system |
| CN115419822A (en) * | 2022-08-19 | 2022-12-02 | 中国电建集团华东勘测设计研究院有限公司 | Liquid hydrogen storage and transportation type hydrogen filling system for hydrogen refueling station by using cold energy generated by para-ortho hydrogen conversion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520000A (en) * | 1995-03-30 | 1996-05-28 | Praxair Technology, Inc. | Cryogenic gas compression system |
| CN101832467B (en) * | 2010-06-03 | 2011-09-14 | 浙江大学 | Hydrogen refueling station hydrogen optimizing filling method based on temperature rise and energy consumption control and system thereof |
| CN108561749B (en) * | 2018-06-07 | 2024-01-05 | 张家港氢云新能源研究院有限公司 | Mixed filling system applied to liquid hydrogen hydrogenation station |
| CN109185698B (en) * | 2018-10-17 | 2024-03-01 | 东方电气集团东方锅炉股份有限公司 | Efficient hydrogenation method and system |
| CN209084397U (en) * | 2018-10-17 | 2019-07-09 | 东方电气集团东方锅炉股份有限公司 | It is suitable for the hydrogenation system of 70MPa and 35MPa filling pressure simultaneously |
| FR3088415B1 (en) * | 2018-11-12 | 2020-10-23 | Air Liquide | PROCESS AND INSTALLATION FOR STORAGE AND DISTRIBUTION OF LIQUEFIED HYDROGEN |
| CN112483886A (en) * | 2020-12-25 | 2021-03-12 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen storage type hydrogenation device adopting liquid hydrogen pre-cooling |
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