CN214249132U - Buried liquid hydrogen storage type hydrogenation device - Google Patents
Buried liquid hydrogen storage type hydrogenation device Download PDFInfo
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- CN214249132U CN214249132U CN202023174204.7U CN202023174204U CN214249132U CN 214249132 U CN214249132 U CN 214249132U CN 202023174204 U CN202023174204 U CN 202023174204U CN 214249132 U CN214249132 U CN 214249132U
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Abstract
The utility model discloses an underground liquid hydrogen storage hydrogenation device, which is provided with a heat preservation cavity with an access passage underground, a station underground liquid hydrogen storage tank and a liquid hydrogen booster pump are arranged in the heat preservation cavity, and a liquid nitrogen vaporizer, a liquid nitrogen circulating pump, an air temperature vaporizer, a low pressure energy accumulator, a 35MPa hydrogenation machine, a high pressure compressor, a high pressure energy accumulator and a 70MPa hydrogenation machine, of which the heat exchange medium is liquid nitrogen, are arranged on the ground; the components are connected through a pipeline system to form 35MPa/70MPa mixed filling taking liquid hydrogen as a hydrogen source, and cold energy generated by vaporization of the liquid hydrogen is taken as cold energy of a 35MPa/70MPa hydrogenation machine. The hydrogenation device with the structure has the advantages of simple flow, convenient operation, small land occupation, low cost for building the liquid hydrogen storage type hydrogenation device and good safety performance.
Description
Technical Field
The utility model relates to a hydrogenation unit especially relates to an underground liquid hydrogen stores up hydrogen type hydrogenation unit.
Background
With the increasing prominence of global warming problems and the encouragement of development and utilization of hydrogen energy in various countries, more hydrogen fuel cell automobiles are put into the market. The hydrogenation device is used in a fuel cell automobile, just like a gas station is used in a traditional fuel oil automobile and a charging station is used in a pure electric automobile, and is an essential base stone for supporting the development of the fuel cell automobile industry.
There are currently about 400 more hydrogenation units worldwide, of which about 1/3 is a liquid hydrogen storage type hydrogenation unit, essentially concentrated in europe, the united states and japan; the prior hydrogenation device in China still mainly adopts a high-pressure hydrogen storage type hydrogenation device due to the development of a liquid hydrogen utilization technology. Compared with a high-pressure hydrogen storage type hydrogenation device, the liquid hydrogen storage type hydrogenation device has the advantages of large hydrogen storage capacity, small station building area, high filling speed and the like, and becomes an optimal solution for the construction of hydrogenation infrastructure in the future.
However, compared with the high-pressure hydrogen storage type hydrogenation apparatus, the liquid hydrogen storage type hydrogenation apparatus is additionally provided with a liquid hydrogen storage tank, a liquid hydrogen booster pump and a liquid hydrogen vaporizer, especially the liquid hydrogen storage tank, which is installed on the ground, and needs to meet the corresponding fire-proof and explosion-proof safety spacing, so that a large amount of land is occupied, and the station building cost of the liquid hydrogen storage type hydrogenation apparatus is increased. Meanwhile, in order to realize the commercial operation of the hydrogenation device, a commercial land with relatively high price must be applied when the hydrogenation device is generally applied for construction, and if the hydrogenation device is constructed on a relatively cheap industrial land, the constructed hydrogenation device can only hydrogenate or perform experiments on products of the hydrogenation device, and the public operation cannot be realized, so that the land is a key factor influencing the construction cost of the liquid hydrogen storage type hydrogenation device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve is: the buried liquid hydrogen storage type hydrogenation device has small occupied space, saves the station building cost of the liquid hydrogen storage type hydrogenation device, and reduces the heat leakage of the liquid hydrogen storage tank.
In order to solve the above problem, the utility model adopts the following technical scheme: the buried liquid hydrogen storage type hydrogenation device has the structure that: a heat preservation chamber is built underground, an overhaul channel communicated with the ground is arranged at the top of the heat preservation chamber, a buried liquid hydrogen storage tank for a station and a liquid hydrogen booster pump are arranged in the heat preservation chamber, and a liquid nitrogen vaporizer, a liquid nitrogen circulating pump, an air temperature vaporizer, a low-pressure energy accumulator, a 35MPa hydrogenation machine, a high-pressure compressor, a high-pressure energy accumulator and a 70MPa hydrogenation machine with liquid nitrogen as a heat exchange medium are arranged on the ground; a liquid hydrogen inlet of a station buried liquid hydrogen storage tank can be connected with a liquid hydrogen source, a liquid hydrogen outlet of the station buried liquid hydrogen storage tank is connected with a liquid hydrogen inlet of a liquid hydrogen booster pump through a first hydrogen conveying pipeline, a liquid hydrogen outlet of the liquid hydrogen booster pump is connected with a liquid hydrogen inlet of a liquid nitrogen vaporizer through a second hydrogen conveying pipeline, a liquid hydrogen outlet of the liquid nitrogen vaporizer is connected with an inlet of an air temperature vaporizer through a third hydrogen conveying pipeline, an outlet of the air temperature vaporizer is respectively connected with a fourth hydrogen conveying pipeline and a fifth hydrogen conveying pipeline, the fourth hydrogen conveying pipeline is connected with an inlet of a high-pressure compressor, an outlet of the high-pressure compressor is connected with an inlet of a high-pressure energy accumulator through a sixth hydrogen conveying pipeline, and an outlet of the high-pressure energy accumulator is connected with an inlet of a 70MPa hydrogenation machine through a seventh hydrogen conveying pipeline; the fifth hydrogen conveying pipeline is sequentially connected with the low-pressure energy accumulator and the inlet of the 35MPa hydrogenation machine; the liquid nitrogen inlet of the liquid nitrogen vaporizer is connected with a first liquid nitrogen delivery pipeline with a first valve, the first liquid nitrogen delivery pipeline can be in butt joint with a liquid nitrogen source, the liquid nitrogen outlet of the liquid nitrogen vaporizer is connected with the inlet of the liquid nitrogen circulating pump through a second liquid nitrogen delivery pipeline, the outlet of the liquid nitrogen circulating pump is respectively connected with the inlet of the precooling pipeline of the 35MPa hydrogenation machine and the inlet of the precooling pipeline of the 70MPa hydrogenation machine through a third liquid nitrogen delivery pipeline, a fourth liquid nitrogen delivery pipeline is arranged on the first liquid nitrogen delivery pipeline between the first valve and the liquid nitrogen inlet of the liquid nitrogen vaporizer, and the fourth liquid nitrogen delivery pipeline is respectively connected with the outlet of the precooling pipeline of the 35MPa hydrogenation machine and the outlet of the precooling pipeline of the 70MPa hydrogenation machine.
Further, in the buried type liquid hydrogen storage type hydrogenation device, an eighth hydrogen transportation pipeline is arranged at an outlet of the high-pressure compressor or a sixth hydrogen transportation pipeline, and the eighth hydrogen transportation pipeline is connected with a seventh hydrogen transportation pipeline or an inlet of a 70MPa hydrogenation machine.
Further, in the buried type liquid hydrogen storage type hydrogenation device, the liquid nitrogen vaporizer is a light tube vaporizer.
Further, in the buried liquid hydrogen storage type hydrogenation device, the air-temperature vaporizer is a fin-tube vaporizer, and the heat exchange medium is air.
Further, in the buried liquid hydrogen storage type hydrogenation device, a liquid hydrogen vaporized gas inlet of the buried liquid hydrogen storage tank for the station is connected with a liquid hydrogen vaporized gas outlet of the liquid hydrogen booster pump through a ninth hydrogen transmission pipeline.
Further, in the buried liquid hydrogen storage type hydrogenation device, a gaseous hydrogen outlet of the buried liquid hydrogen storage tank for the station is connected with an inlet of the high-pressure compressor through a tenth hydrogen transmission pipeline, and a second valve is arranged on the tenth hydrogen transmission pipeline.
Further, in the buried liquid hydrogen storage type hydrogenation device, a standby liquid hydrogen booster pump is further arranged in the heat preservation chamber, and a liquid hydrogen outlet of the buried liquid hydrogen storage tank for the station is respectively connected with a liquid hydrogen inlet of the liquid hydrogen booster pump and a liquid hydrogen inlet of the standby liquid hydrogen booster pump through a first hydrogen transmission pipeline; and a liquid hydrogen inlet of the liquid nitrogen vaporizer is respectively connected with a liquid hydrogen outlet of the liquid hydrogen booster pump and a liquid hydrogen outlet of the standby liquid hydrogen booster pump through a second hydrogen transmission pipeline.
Further, in the buried liquid hydrogen storage type hydrogenation device, the liquid hydrogen vaporization gas inlet of the buried liquid hydrogen storage tank for the station is connected with the liquid hydrogen vaporization gas outlet of the liquid hydrogen booster pump and the liquid hydrogen vaporization gas outlet of the standby liquid hydrogen booster pump through the ninth hydrogen transmission pipeline respectively.
Further, in the buried liquid hydrogen storage type hydrogenation device, a gaseous hydrogen outlet of the buried liquid hydrogen storage tank for the station is connected with an inlet of the high-pressure compressor through a tenth hydrogen transmission pipeline, and a second valve is arranged on the tenth hydrogen transmission pipeline.
The utility model has the advantages that: the liquid hydrogen storage type hydrogenation device has simple flow and convenient operation, and the underground liquid hydrogen storage tank and the liquid hydrogen booster pump for the station are buried in the underground heat-preservation chamber, so that the whole structure of the liquid hydrogen storage type hydrogenation device is more compact, the land occupation amount of the liquid hydrogen storage type hydrogenation device is greatly reduced, and the station building cost of the liquid hydrogen storage type hydrogenation device is saved; in addition, heat leakage in the liquid hydrogen storage tank can be reduced, and the safety margin of the liquid hydrogen storage type hydrogenation device is increased; secondly, the liquid hydrogen storage type hydrogenation device utilizes a liquid hydrogen booster pump, a liquid nitrogen vaporizer and an air temperature vaporizer to pressurize and vaporize liquid hydrogen to 50Mpa high-pressure hydrogen and then divides the liquid hydrogen into two paths: one path of the direct-supply low-pressure energy accumulator is directly pressurized by the high-pressure compressor, and the other path of the direct-supply high-pressure compressor is stored in the high-pressure energy accumulator or is directly filled through the 70MPa hydrogenation machine, compared with the current flow of the mainstream liquid hydrogen storage type hydrogenation device, the liquid hydrogen storage type hydrogenation device reduces the vaporization pressure, shortens the vaporization time and reduces the overall energy consumption; the liquid hydrogen storage type hydrogenation device utilizes the cold energy of liquid hydrogen vaporization to cool the 70Mpa/35MPa hydrogenation machine, and does not need to be additionally provided with a water chilling unit for cooling the high-pressure hydrogen in the 70Mpa/35MPa hydrogenation machine, thereby reducing the station building cost and the overall energy consumption of the hydrogen storage type hydrogenation device, and adopting the low-temperature quick filling of the high-pressure hydrogen to greatly improve the hydrogen filling efficiency.
Drawings
Fig. 1 is a schematic flow diagram of a buried liquid hydrogen storage type hydrogenation device according to the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Fig. 3 is a partially enlarged schematic view of another portion of fig. 1.
Fig. 4 is a schematic flow diagram of the hydrogen input sequence of fig. 3.
FIG. 5 is a schematic flow diagram of the liquid nitrogen trend of FIG. 3.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.
Example one
As shown in fig. 1, fig. 2 and fig. 3, the buried type hydrogenation apparatus for storing liquid hydrogen in this embodiment has the following structure: the underground heat preservation chamber 1 is built, the top of the heat preservation chamber 1 is provided with an overhaul channel 5 communicated with the ground, a buried liquid hydrogen storage tank 2 and a liquid hydrogen booster pump 3 for a station are arranged in the heat preservation chamber 1, and a liquid nitrogen vaporizer 6, a liquid nitrogen circulating pump 29, an air temperature vaporizer 7, a low-pressure energy accumulator 8, a 35MPa hydrogenation machine 9, a high-pressure compressor 10, a high-pressure energy accumulator 11 and a 70MPa hydrogenation machine 12 of which heat exchange media are liquid nitrogen are arranged on the ground. In this embodiment, the liquid nitrogen vaporizer 6 is a light-pipe vaporizer, and the liquid nitrogen and the liquid hydrogen are forced to flow in a convection manner by a pump during operation. The air-temperature vaporizer 7 adopts a finned tube vaporizer, the heat exchange medium is air, and natural convection heat exchange is carried out between the air and liquid hydrogen during working.
The components are connected through a pipeline system to form 35MPa/70MPa mixed filling taking liquid hydrogen as a hydrogen source, and cold energy generated by vaporization of the liquid hydrogen is taken as cold energy of a 35MPa/70MPa hydrogenation machine. The specific pipeline system is connected as follows:
the liquid hydrogen inlet of the buried liquid hydrogen storage tank 2 for the station can be connected with a liquid hydrogen source, the liquid hydrogen source is from a liquid hydrogen tank car, a liquid hydrogen ship, a liquid hydrogen train or a liquid hydrogen pipeline and the like, and the liquid hydrogen source is transported to the buried liquid hydrogen storage tank 2 for the station to be stored through the liquid hydrogen tank car, the liquid hydrogen ship, the liquid hydrogen train or the liquid hydrogen pipeline and the like.
As shown in fig. 2, 3 and 4, a liquid hydrogen outlet of the buried liquid hydrogen storage tank 2 for the station is connected with a liquid hydrogen inlet of the liquid hydrogen booster pump 3 through a first hydrogen conveying pipeline 13, a liquid hydrogen outlet of the liquid hydrogen booster pump 3 is connected with a liquid hydrogen inlet of the liquid nitrogen vaporizer 6 through a second hydrogen conveying pipeline 14, a liquid hydrogen outlet of the liquid nitrogen vaporizer 6 is connected with an inlet of the air temperature vaporizer 7 through a third hydrogen conveying pipeline 15, an outlet 7 of the air temperature vaporizer is respectively connected with a fourth hydrogen conveying pipeline 16 and a fifth hydrogen conveying pipeline 17, the fourth hydrogen conveying pipeline 16 is connected with an inlet of the high pressure compressor 10, an outlet of the high pressure compressor 10 is connected with an inlet of the high pressure accumulator 11 through a sixth hydrogen conveying pipeline 18, and an outlet of the high pressure accumulator 11 is connected with an inlet of the 70MPa hydrogenation machine 12 through a seventh hydrogen conveying pipeline 19; the fifth hydrogen conveying pipeline 17 is connected with the low-pressure energy accumulator 8 and the inlet of the 35MPa hydrogenation machine 9 in sequence.
The liquid hydrogen vaporization gas inlet of the buried liquid hydrogen storage tank 2 for the station is connected with the liquid hydrogen vaporization gas outlet of the liquid hydrogen booster pump 3 through the ninth hydrogen transmission pipeline 21, so that pressurization is carried out in the buried liquid hydrogen storage tank 2 for the station. The gaseous hydrogen outlet of the station buried liquid hydrogen storage tank 2 is connected with the inlet of the high pressure compressor 10 through a tenth hydrogen transportation pipeline 22, and a second valve 27 is arranged on the tenth hydrogen transportation pipeline 22. When the gaseous hydrogen pressure in the station buried liquid hydrogen storage tank 2 reaches the relief pressure, the second valve 27 is opened, and the gaseous hydrogen in the station buried liquid hydrogen storage tank 2 is conveyed to the high-pressure compressor 10 to be pressurized and then stored in the high-pressure energy accumulator 11 or directly conveyed to the 70MPa hydrogenation machine 12 to be filled externally, so that the BOG gas waste is avoided.
As shown in fig. 4, an eighth hydrogen transportation pipeline 20 is provided on the outlet of the high pressure compressor 10 or the sixth hydrogen transportation pipeline 18, and the eighth hydrogen transportation pipeline 20 is connected to the seventh hydrogen transportation pipeline 19 or the inlet of the 70MPa hydrogenation machine 12.
In order to meet the commercial requirements of the hydrogen fuel cell vehicle, the vehicle-mounted high-pressure hydrogen storage cylinder needs to be filled with hydrogen with sufficient quality within 5-10 minutes, but the use safety of the vehicle-mounted high-pressure hydrogen storage cylinder can be obviously influenced by the temperature rise effect brought by the hydrogen pressurization rapid filling process. Therefore, in order to take the hydrogenation speed and the safety of the hydrogen bottle into consideration, 70MPa high-pressure hydrogen needs to be cooled to-40 ℃ and 35MPa low-pressure hydrogen needs to be cooled to-20 ℃. In order to reduce the overall energy consumption of the hydrogenation device and reduce the equipment investment, the cooling energy of the vaporization of the liquid hydrogen is utilized to cool the hydrogenation machine 12 at 70MPa and the hydrogenation machine 9 at 35 MPa.
As shown in fig. 3 and 5, a liquid nitrogen inlet of the liquid nitrogen vaporizer 6 is connected to a first nitrogen delivery pipeline 23 with a first valve 28, the first nitrogen delivery pipeline 23 can be in butt joint with a liquid nitrogen source, a liquid nitrogen outlet of the liquid nitrogen vaporizer 6 is connected to an inlet of a liquid nitrogen circulating pump 29 through a second nitrogen delivery pipeline 24, an outlet of the liquid nitrogen circulating pump 29 is respectively connected to an inlet of a pre-cooling pipeline of the 35MPa hydrogenation unit 9 and an inlet of a pre-cooling pipeline of the 70MPa hydrogenation unit 12 through a third nitrogen delivery pipeline 25, a fourth nitrogen delivery pipeline 26 is arranged on the first nitrogen delivery pipeline 23 between the first valve 28 and the liquid nitrogen inlet of the liquid nitrogen vaporizer 6, and the fourth nitrogen delivery pipeline 26 is respectively connected to an outlet of the pre-cooling pipeline of the 35MPa hydrogenation unit 9 and an outlet of the pre-cooling pipeline of the 70MPa hydrogenation unit 12.
In the embodiment, the liquid hydrogen vaporization unit adopts two-stage vaporization and sectional pressurization. After liquid hydrogen in the buried liquid hydrogen storage tank 2 for the station is pressurized to 45MPa through the first hydrogen conveying pipeline 13 and the liquid hydrogen booster pump 3, the liquid hydrogen is vaporized and pressurized through the second hydrogen conveying pipeline 14 and the liquid nitrogen vaporizer 6, and the liquid hydrogen is pressurized and vaporized again to 50MPa high-pressure hydrogen through the air temperature vaporizer 7. 50MPa high-pressure hydrogen is divided into two paths: one path is stored in the low-pressure accumulator 8 through a fifth hydrogen transmission pipeline 17; the other path of the hydrogen is pressurized to 87.5 +/-2.5 MPa of high-pressure hydrogen through a fourth hydrogen transmission pipeline 16 and a high-pressure compressor 10 and then stored in a high-pressure energy accumulator 11 or directly transmitted to a 70MPa hydrogenation machine 12 for external filling.
And meanwhile, the cooled liquid nitrogen is respectively conveyed to a precooling pipeline of a 35MPa hydrogenation machine 9 and a precooling pipeline of a 70MPa hydrogenation machine 12 through a first liquid nitrogen conveying pipeline 23, the hydrogen pipelines of the 70MPa hydrogenation machine 12 and the 35MPa hydrogenation machine 9 are precooled, the temperature of the hydrogen of the 70MPa hydrogenation machine 12 is controlled to be minus 40 ℃ plus or minus 1 ℃ by controlling the flow rate and the flow velocity of the liquid nitrogen, and the temperature of the hydrogen of the 35MPa hydrogenation machine 9 is controlled to be minus 20 ℃ plus or minus 1 ℃ so as to improve the hydrogenation speed under the condition of ensuring the safety of temperature rise.
Example two
In this embodiment, on the basis of the first embodiment, a standby liquid hydrogen booster pump 4 is further disposed in the heat-insulating chamber 1, as shown in fig. 2, at this time, the liquid hydrogen outlet of the buried liquid hydrogen storage tank 2 for the station is respectively connected to the liquid hydrogen inlet of the liquid hydrogen booster pump 3 and the liquid hydrogen inlet of the standby liquid hydrogen booster pump 4 through the first hydrogen transmission pipeline 13. The liquid hydrogen inlet of the liquid nitrogen vaporizer 6 is respectively connected with the liquid hydrogen outlet of the liquid hydrogen booster pump 3 and the liquid hydrogen outlet of the standby liquid hydrogen booster pump 4 through a second hydrogen transmission pipeline 14.
The liquid hydrogen vaporized gas inlet of the buried liquid hydrogen storage tank 2 for the station is respectively connected with the liquid hydrogen vaporized gas outlet of the liquid hydrogen booster pump 3 and the liquid hydrogen vaporized gas outlet of the standby liquid hydrogen booster pump 4 through a ninth hydrogen transmission pipeline 21.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
The utility model has the advantages that: the liquid hydrogen storage type hydrogenation device is simple in flow and convenient to operate, and the buried liquid hydrogen storage tank 2 and the liquid hydrogen booster pump 3 for the station are buried in the underground heat-preservation chamber 1, so that the overall structure of the liquid hydrogen storage type hydrogenation device is more compact, the land occupation amount of the liquid hydrogen storage type hydrogenation device is greatly reduced, and the station building cost of the liquid hydrogen storage type hydrogenation device is saved; in addition, heat leakage in the liquid hydrogen storage tank can be reduced, and the safety margin of the liquid hydrogen storage type hydrogenation device is increased; secondly, the liquid hydrogen storage type hydrogenation device utilizes a liquid hydrogen booster pump 3, a liquid nitrogen vaporizer 6 and an air temperature vaporizer 7 to pressurize and vaporize liquid hydrogen to 50Mpa high-pressure hydrogen and then divides the hydrogen into two paths: one path of the direct-supply low-pressure energy accumulator 8 is directly used for low-pressure energy storage, and the other path of the direct-supply high-pressure compressor 10 is subjected to secondary pressurization and then is stored in the high-pressure energy accumulator 11 or is directly filled outside through the 70MPa hydrogenation machine 12, compared with the current process of the mainstream liquid hydrogen storage type hydrogenation device, the liquid hydrogen storage type hydrogenation device reduces the vaporization pressure, shortens the vaporization time and reduces the overall energy consumption; the liquid hydrogen storage type hydrogenation device utilizes the cold energy of liquid hydrogen vaporization to cool the 70Mpa/35MPa hydrogenation machine, and does not need to be additionally provided with a water chilling unit for cooling the high-pressure hydrogen in the 70Mpa/35MPa hydrogenation machine, thereby reducing the station building cost and the overall energy consumption of the hydrogen storage type hydrogenation device, and adopting the low-temperature quick filling of the high-pressure hydrogen to greatly improve the hydrogen filling efficiency.
Claims (9)
1. Buried liquid hydrogen storage type hydrogenation device, its characterized in that: a heat preservation chamber is built underground, an overhaul channel communicated with the ground is arranged at the top of the heat preservation chamber, a buried liquid hydrogen storage tank for a station and a liquid hydrogen booster pump are arranged in the heat preservation chamber, and a liquid nitrogen vaporizer, a liquid nitrogen circulating pump, an air temperature vaporizer, a low-pressure energy accumulator, a 35MPa hydrogenation machine, a high-pressure compressor, a high-pressure energy accumulator and a 70MPa hydrogenation machine with liquid nitrogen as a heat exchange medium are arranged on the ground; a liquid hydrogen inlet of a station buried liquid hydrogen storage tank can be connected with a liquid hydrogen source, a liquid hydrogen outlet of the station buried liquid hydrogen storage tank is connected with a liquid hydrogen inlet of a liquid hydrogen booster pump through a first hydrogen conveying pipeline, a liquid hydrogen outlet of the liquid hydrogen booster pump is connected with a liquid hydrogen inlet of a liquid nitrogen vaporizer through a second hydrogen conveying pipeline, a liquid hydrogen outlet of the liquid nitrogen vaporizer is connected with an inlet of an air temperature vaporizer through a third hydrogen conveying pipeline, an outlet of the air temperature vaporizer is respectively connected with a fourth hydrogen conveying pipeline and a fifth hydrogen conveying pipeline, the fourth hydrogen conveying pipeline is connected with an inlet of a high-pressure compressor, an outlet of the high-pressure compressor is connected with an inlet of a high-pressure energy accumulator through a sixth hydrogen conveying pipeline, and an outlet of the high-pressure energy accumulator is connected with an inlet of a 70MPa hydrogenation machine through a seventh hydrogen conveying pipeline; the fifth hydrogen conveying pipeline is sequentially connected with the low-pressure energy accumulator and the inlet of the 35MPa hydrogenation machine; the liquid nitrogen inlet of the liquid nitrogen vaporizer is connected with a first liquid nitrogen delivery pipeline with a first valve, the first liquid nitrogen delivery pipeline can be in butt joint with a liquid nitrogen source, the liquid nitrogen outlet of the liquid nitrogen vaporizer is connected with the inlet of the liquid nitrogen circulating pump through a second liquid nitrogen delivery pipeline, the outlet of the liquid nitrogen circulating pump is respectively connected with the inlet of the precooling pipeline of the 35MPa hydrogenation machine and the inlet of the precooling pipeline of the 70MPa hydrogenation machine through a third liquid nitrogen delivery pipeline, a fourth liquid nitrogen delivery pipeline is arranged on the first liquid nitrogen delivery pipeline between the first valve and the liquid nitrogen inlet of the liquid nitrogen vaporizer, and the fourth liquid nitrogen delivery pipeline is respectively connected with the outlet of the precooling pipeline of the 35MPa hydrogenation machine and the outlet of the precooling pipeline of the 70MPa hydrogenation machine.
2. The underground liquid hydrogen storage type hydrogenation device according to claim 1, wherein: an eighth hydrogen conveying pipeline is arranged at the outlet of the high-pressure compressor or the sixth hydrogen conveying pipeline and is connected with the seventh hydrogen conveying pipeline or the inlet of the 70MPa hydrogenation machine.
3. The underground liquid hydrogen storage type hydrogenation device according to claim 1, wherein: the liquid nitrogen vaporizer is a light tube vaporizer.
4. The underground liquid hydrogen storage type hydrogenation device according to claim 1, 2 or 3, wherein: the air temperature type vaporizer adopts a finned tube vaporizer, and the heat exchange medium is air.
5. The underground liquid hydrogen storage type hydrogenation device according to claim 1, 2 or 3, wherein: and a liquid hydrogen vaporized gas inlet of the buried liquid hydrogen storage tank for the station is connected with a liquid hydrogen vaporized gas outlet of the liquid hydrogen booster pump through a ninth hydrogen transmission pipeline.
6. The underground liquid hydrogen storage type hydrogenation device according to claim 5, characterized in that: the gaseous hydrogen outlet of the buried liquid hydrogen storage tank for the station is connected with the inlet of the high-pressure compressor through a tenth hydrogen conveying pipeline, and a second valve is arranged on the tenth hydrogen conveying pipeline.
7. The underground liquid hydrogen storage type hydrogenation device according to claim 1, 2 or 3, wherein: a standby liquid hydrogen booster pump is also arranged in the heat-insulating chamber, and a liquid hydrogen outlet of the station buried liquid hydrogen storage tank is respectively connected with a liquid hydrogen inlet of the liquid hydrogen booster pump and a liquid hydrogen inlet of the standby liquid hydrogen booster pump through a first hydrogen transmission pipeline; and a liquid hydrogen inlet of the liquid nitrogen vaporizer is respectively connected with a liquid hydrogen outlet of the liquid hydrogen booster pump and a liquid hydrogen outlet of the standby liquid hydrogen booster pump through a second hydrogen transmission pipeline.
8. The underground liquid hydrogen storage type hydrogenation device according to claim 7, characterized in that: the liquid hydrogen vaporized gas inlet of the buried liquid hydrogen storage tank for the station is respectively connected with the liquid hydrogen vaporized gas outlet of the liquid hydrogen booster pump and the liquid hydrogen vaporized gas outlet of the standby liquid hydrogen booster pump through a ninth hydrogen transmission pipeline.
9. The underground liquid hydrogen storage type hydrogenation device according to claim 8, characterized in that: the gaseous hydrogen outlet of the buried liquid hydrogen storage tank for the station is connected with the inlet of the high-pressure compressor through a tenth hydrogen conveying pipeline, and a second valve is arranged on the tenth hydrogen conveying pipeline.
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| CN202023174204.7U CN214249132U (en) | 2020-12-25 | 2020-12-25 | Buried liquid hydrogen storage type hydrogenation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264384A (en) * | 2022-07-12 | 2022-11-01 | 林金华 | Hydrogenation safety control method, hydrogenation system, construction method of hydrogenation system and hydrogen storage safety control method |
| CN117646869A (en) * | 2023-12-13 | 2024-03-05 | 烟台东德实业有限公司 | Integrated low-consumption liquid hydrogen station hydrogenation system |
-
2020
- 2020-12-25 CN CN202023174204.7U patent/CN214249132U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264384A (en) * | 2022-07-12 | 2022-11-01 | 林金华 | Hydrogenation safety control method, hydrogenation system, construction method of hydrogenation system and hydrogen storage safety control method |
| CN117646869A (en) * | 2023-12-13 | 2024-03-05 | 烟台东德实业有限公司 | Integrated low-consumption liquid hydrogen station hydrogenation system |
| CN117646869B (en) * | 2023-12-13 | 2024-06-07 | 烟台东德实业有限公司 | Integrated low-consumption liquid hydrogen station hydrogenation system |
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