CN113446518A - High-pressure compression device for hydrogen filling station - Google Patents
High-pressure compression device for hydrogen filling station Download PDFInfo
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- CN113446518A CN113446518A CN202110685141.1A CN202110685141A CN113446518A CN 113446518 A CN113446518 A CN 113446518A CN 202110685141 A CN202110685141 A CN 202110685141A CN 113446518 A CN113446518 A CN 113446518A
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- Prior art keywords
- pressure
- hydrogen
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- pipeline
- liquid
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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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- 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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- 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
Abstract
The invention discloses a high-pressure compression device for a hydrogenation station, which specifically comprises: the system comprises a low-pressure hydrogen inlet pipeline, a high-pressure hydrogen outlet pipeline, at least one group of low-pressure stage hydrogen compression devices, a liquid-driven compressor, and a liquid-driven compressor air inlet pipeline and a liquid-driven compressor air outlet pipeline which are arranged on the liquid-driven compressor; the first group of low-pressure stage hydrogen compression devices are communicated with a low-pressure hydrogen inlet pipeline; the exhaust pipeline of the liquid-driven compressor is communicated with the high-pressure hydrogen exhaust pipeline; pipelines are arranged among all groups of low-pressure stage hydrogen compression devices, and among the last group of low-pressure stage hydrogen compression devices and the liquid-driven compressor air inlet pipeline; the low-pressure stage hydrogen compression device comprises a traditional piston compressor and a gas cooler arranged on the traditional piston compressor, and is responsible for compressing hydrogen in a low-pressure compression section within 15 MPa; the liquid-driven compressor is responsible for compressing hydrogen at a high-pressure compression section within 80 MPa. The invention can provide high-flow high-pressure compressed hydrogen and perfectly meets the requirement of a hydrogenation station on high-flow high-pressure hydrogen processing.
Description
The technical field is as follows:
the invention relates to the technical field of hydrogenation stations, in particular to a high-pressure compression device for a hydrogenation station.
Background art:
with the vigorous development of clean energy in China, people have greater and greater requirements on high-pressure hydrogen, and the daily hydrogen addition of a hydrogen station is greater and greater, so that a compressor is required to be capable of providing high-flow high-pressure compressed hydrogen to meet the increasing requirements.
Most of compressors used in the existing hydrogenation station adopt diaphragm compressors, the diaphragm compressors can be completely free of oil, the compression ratio of the diaphragm compressors can be very large, but the diaphragm compressors are limited by technology and materials, the flow of the diaphragm compressors can only be in a small flow range, and high-flow high-pressure compressed hydrogen cannot be provided; although the traditional piston compressor can achieve large flow, the traditional piston compressor is limited by sealing technology and cannot achieve high compression ratio.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
The invention content is as follows:
the object of the present invention is to provide a high-pressure compression device for a hydrogen station, overcoming the drawbacks of the prior art described above.
In order to achieve the above object, the present invention provides a high pressure compression device for a hydrogen station, comprising a low pressure hydrogen inlet pipeline and a high pressure hydrogen outlet pipeline, and further comprising at least one group of low pressure stage hydrogen compression devices, wherein the first group of low pressure stage hydrogen compression devices is a first group of low pressure stage hydrogen compression devices, the last group of low pressure stage hydrogen compression devices is a last group of low pressure stage hydrogen compression devices, a liquid-driven compressor, and a liquid-driven compressor inlet pipeline and a liquid-driven compressor outlet pipeline arranged on the liquid-driven compressor; the first group of low-pressure stage hydrogen compression devices are communicated with a low-pressure hydrogen inlet pipeline; the exhaust pipeline of the liquid-driven compressor is communicated with the high-pressure hydrogen exhaust pipeline; pipelines are arranged among all groups of low-pressure stage hydrogen compression devices, and among the last group of low-pressure stage hydrogen compression devices and the liquid-driven compressor air inlet pipeline; the low-pressure stage hydrogen compression device comprises a traditional piston compressor and a gas cooler arranged on the traditional piston compressor, and is responsible for compressing hydrogen at a low-pressure compression section within 15 Mpa; the liquid drive compressor is responsible for the compression of the hydrogen at the high-pressure compression section within 80 Mpa.
Further, an air inlet valve is arranged on the low-pressure hydrogen inlet pipeline; the high-pressure hydrogen discharge pipeline is sequentially provided with a gas outlet cooler, a gas filter, an outlet pipeline one-way valve and a high-pressure pipeline outlet valve; and a gas filter, a one-way valve, a control valve and a liquid drive compressor inlet buffer are sequentially arranged on a pipeline between the liquid drive compressor air inlet pipeline and the last group of low-pressure stage hydrogen compression device.
Further, an air inlet buffer tank is arranged on the first group of low-pressure stage hydrogen compression devices and is communicated with a low-pressure hydrogen inlet pipeline; and gas return pipelines are arranged on the pipelines between the low-pressure-stage hydrogen compression devices of each group and between the last low-pressure-stage hydrogen compression device of the last group and the gas inlet pipeline of the liquid-driven compressor, and all stages of circuit main pipes are arranged and communicate the gas return pipelines to the gas inlet buffer tank.
Furthermore, a check valve and a control valve are sequentially arranged on the air return pipeline.
Furthermore, a check valve, a throttle valve and a regulating valve are sequentially arranged on the air return pipeline.
Furthermore, a high-pressure external hydrogen supply interface is arranged on a pipeline between the last group of low-pressure stage hydrogen compression device and the liquid drive compressor air inlet pipeline, and a control valve is arranged on the high-pressure external hydrogen supply interface.
Further, safety valve discharge pipelines are arranged on pipelines between the low-pressure stage hydrogen compression devices and between the last group of low-pressure stage hydrogen compression devices and the liquid-driven compressor air inlet pipeline.
Further, a hydraulic station is also included.
Further, the piston of the hydraulic compressor is driven by high pressure oil supplied from the hydraulic station.
Furthermore, an oil cooler is arranged on the hydraulic station.
Compared with the prior art, the invention is provided with more than one group of low-pressure stage hydrogen compression devices consisting of the traditional piston type compressors and the gas coolers, and the low-pressure stage hydrogen compression devices are responsible for compressing hydrogen at a low-pressure compression section within 15MPa, and the liquid-driven compressors are responsible for compressing hydrogen at a high-pressure compression section within 80 MPa. The flow of the traditional piston compressor used in the low-pressure compression section can be made very large, after the traditional piston compressor is compressed, the volume of a medium is greatly reduced, and then the liquid-driven compressor with small flow is used for increasing the pressure, so that the purpose of compressing hydrogen with large flow and high pressure is achieved.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
the reference signs are: 1-air inlet valve, 2-pipeline, 3-air inlet buffer tank, 4-traditional piston compressor, 5-gas cooler, 6-pressure gauge, 7-loop header pipes of all stages, 8-air return pipeline, 9-one-way valve, 10-control valve, 11-regulating valve, 12-throttle valve, 13-safety valve discharge pipeline, 14-high-pressure external hydrogen supply interface, 15-gas filter, 16-liquid drive compressor air inlet pipeline, 17-liquid drive compressor exhaust pipeline, 18-liquid drive compressor, 19-gas outlet cooler, 20-outlet pipeline one-way valve, 21-high-pressure pipeline outlet valve, 22-oil cooler, 23-hydraulic station, 24-liquid drive compressor inlet buffer, 25-high-pressure hydrogen discharge pipeline, 26-low pressure hydrogen into the pipeline.
The specific implementation mode is as follows:
the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, a high-pressure compression device for a hydrogen filling station adopts a multi-stage compression mode for low-pressure-stage hydrogen, specifically, a low-pressure-stage hydrogen compression device which is composed of a traditional piston compressor 4 and a gas cooler 5 connected thereto and used for cooling the compressed hydrogen is used, the low-pressure-stage hydrogen compression device is at least provided with one group, generally 4 groups, and each group of low-pressure-stage hydrogen compression devices are connected together by a pipeline 2 and are responsible for compressing the hydrogen within 15 Mpa; the liquid-driven compressor is also provided with a liquid-driven compressor 18, a liquid-driven compressor air inlet pipeline 16 and a liquid-driven compressor exhaust pipeline 17 which are connected to the liquid-driven compressor 18, the low-pressure-stage hydrogen compression device is connected to the liquid-driven compressor air inlet pipeline 16 through a pipeline 2, and the liquid-driven compressor 18 is responsible for compressing hydrogen within 80 Mpa.
When the compressors at all levels have overpressure, air return is needed to reduce the air pressure so as to ensure the safety and stability of the system, and meanwhile, in order to reduce the starting current of the motor when the next-level compressor is started and protect the motor, air return pipelines 8 are arranged on the pipelines 2 between the low-pressure-level hydrogen compression devices at all levels and the pipelines 2 between the low-pressure-level hydrogen compression devices and the liquid-driven compressor air inlet pipeline 16. The return air pipeline 8 at the lower part of the air pressure is sequentially provided with a one-way valve 9 and a control valve 10, and the return air pipeline 8 at the higher part of the air pressure is sequentially provided with a regulating valve 11, a throttle valve 12 and the one-way valve 9. The check valve 9 is provided to prevent high-pressure gas from flowing into (flowing backward through) the low-pressure gas line, and the throttle valve 12 is provided to reduce the reflux pressure.
The air inlet end of the low-pressure-stage hydrogen compression device is provided with the air inlet buffer tank 3, each group of air return pipelines 8 gathers on each stage of the air return main pipe 7 and is introduced into the air inlet buffer tank 3, so that high-pressure gas in each path is gathered through the air return pipeline 8 after being decompressed and enters the buffer tank 3, and the low-pressure-stage hydrogen compression device is protected by recycling gas and reducing fluctuation of air inlet pressure.
A low pressure hydrogen inlet line 26 is provided in communication with the inlet buffer tank 3 through which low pressure hydrogen enters the compression device, and an inlet valve 1 is provided thereon for controlling the admission of low pressure hydrogen.
The low-pressure-stage hydrogen compression device is connected to a pipeline 2 of an air inlet pipeline 16 of the liquid-driven compressor, and is sequentially provided with a gas filter 15, a one-way valve 9 and a control valve 10, wherein the gas filter 15 filters impurities in the hydrogen. In order to meet the requirements of different sources of hydrogen in the gas station, a high-pressure external hydrogen supply interface 14 is arranged behind the control valve 10, and the control valve 10 is arranged. In front of the liquid-driven compressor intake pipe 16, a liquid-driven compressor inlet buffer 24 is provided, and the liquid-driven compressor inlet buffer 24 controls the fluctuation of the gas pressure to perform a pressure stabilizing function.
And finally, a high-pressure hydrogen discharge pipeline 25 communicated with the liquid-drive compressor discharge pipeline 17 is arranged, and the hydrogen is compressed by the low-pressure stage hydrogen compression device, then compressed by the liquid-drive compressor 18 and discharged from the high-pressure hydrogen discharge pipeline 25. In order to reduce the temperature of the high-pressure hydrogen, a gas outlet cooler 19 is arranged on the high-pressure hydrogen discharge pipeline 25, a gas filter 15 is arranged on the high-pressure hydrogen discharge pipeline 25 in order to reduce impurities of the high-pressure hydrogen, an outlet pipeline one-way valve 20 is arranged on the high-pressure hydrogen discharge pipeline 25 in order to prevent the high-pressure gas from flowing backwards in a reverse direction, and a high-pressure pipeline outlet valve 21 is arranged to control the discharge of the high-pressure hydrogen.
In order to ensure the safety of the whole system, a safety valve discharge pipeline 13 communicated with the low-pressure stage hydrogen compressor connecting pipeline 2 and the high-pressure hydrogen discharge pipeline 25 is arranged to cope with system abnormality.
In order to obtain the system pressure conveniently, pressure gauges 6 are arranged on the low-pressure hydrogen inlet pipeline 26, the high-pressure hydrogen outlet pipeline 25 and the pipeline 2 communicated with the liquid-driven compressor inlet pipeline 16.
The piston of the liquid-driven compressor 18 used in this embodiment is driven by high-pressure oil supplied from the hydraulic station 23 to compress and increase the pressure of gas. An oil cooler 22 is arranged on the oil pipeline, and the hydraulic oil is cooled by air cooling.
The foregoing descriptions of specific exemplary embodiments of the invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A high-pressure compression device for a hydrogen station, comprising a low-pressure hydrogen gas inlet pipe (26) and a high-pressure hydrogen gas discharge pipe (25), characterized in that: the system also comprises at least one group of low-pressure stage hydrogen compression devices, wherein the first group of low-pressure stage hydrogen compression devices are the first group of low-pressure stage hydrogen compression devices, the last group of low-pressure stage hydrogen compression devices are the last group of low-pressure stage hydrogen compression devices, a liquid-driven compressor (18), and a liquid-driven compressor air inlet pipeline (16) and a liquid-driven compressor exhaust pipeline (17) which are arranged on the liquid-driven compressor; the first group of low-pressure stage hydrogen compression devices are communicated with a low-pressure hydrogen inlet pipeline (26); the exhaust pipeline (17) of the liquid-driven compressor is communicated with a high-pressure hydrogen exhaust pipeline (25); pipelines (2) are arranged among all groups of low-pressure stage hydrogen compression devices and between the last group of low-pressure stage hydrogen compression device and a liquid-driven compressor air inlet pipeline (16); the low-pressure stage hydrogen compression device comprises a traditional piston type compressor (4) and a gas cooler (5) arranged on the traditional piston type compressor, and is responsible for compressing hydrogen at a low-pressure compression section within 15 MPa; the liquid-driven compressor (18) is responsible for compressing hydrogen in a high-pressure compression section within 80 MPa.
2. A high-pressure compression device for a hydrogen station according to claim 1, characterized in that: an air inlet valve (1) is arranged on the low-pressure hydrogen inlet pipeline (26); a gas outlet cooler (19), a gas filter (15), an outlet pipeline one-way valve (20) and a high-pressure pipeline outlet valve (21) are sequentially arranged on the high-pressure hydrogen discharge pipeline (25); and a gas filter (15), a one-way valve (9), a control valve (10) and a liquid-driven compressor inlet buffer (24) are sequentially arranged on a pipeline (2) between an air inlet pipeline (16) of the liquid-driven compressor and the last-group low-pressure-stage hydrogen compression device.
3. A high-pressure compression device for a hydrogen station according to claim 1, characterized in that: the first group of low-pressure stage hydrogen compression devices are provided with an air inlet buffer tank (3), and the air inlet buffer tank (3) is communicated with a low-pressure hydrogen inlet pipeline (26); and return gas pipelines (8) are arranged on the pipelines (2) between the low-pressure-stage hydrogen compression devices of each group and the pipelines (2) between the last low-pressure-stage hydrogen compression device and the liquid-driven compressor gas inlet pipeline (16), all stages of return gas main pipes (7) are arranged, and the return gas pipelines (8) are communicated to the gas inlet buffer tank (3) by all stages of return gas main pipes (7).
4. A high-pressure compression device for a hydrogen station according to claim 3, characterized in that: and the air return pipeline (8) is sequentially provided with a one-way valve (9) and a control valve (10).
5. A high-pressure compression device for a hydrogen station according to claim 3, characterized in that: and the air return pipeline (8) is sequentially provided with a one-way valve (9), a throttle valve (12) and a regulating valve (11).
6. A high-pressure compression device for a hydrogen station according to any one of claims 1 to 5, characterized in that: and a high-pressure external hydrogen supply interface (14) is arranged on the pipeline (2) between the last group low-pressure stage hydrogen compression device and the liquid-driven compressor air inlet pipeline (16), and a control valve (10) is arranged on the high-pressure external hydrogen supply interface (14).
7. A high-pressure compression device for a hydrogen station according to any one of claims 1 to 5, characterized in that: and safety valve discharge pipelines (13) are arranged on the pipeline (2) between the low-pressure stage hydrogen compression devices and the pipeline (2) between the last group of low-pressure stage hydrogen compression devices and the liquid drive compressor air inlet pipeline (16).
8. A high-pressure compression apparatus for a hydrogen station according to any one of claims 1 to 7, characterized in that: also comprises a hydraulic station (23).
9. A high-pressure compression device for a hydrogen station according to claim 8, characterized in that: the piston of the hydraulic compressor (18) is driven by high-pressure oil supplied by a hydraulic station (23).
10. A high-pressure compression device for a hydrogen station according to claim 8, characterized in that: and an oil cooler (22) is arranged on the hydraulic station (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110685141.1A CN113446518A (en) | 2021-06-21 | 2021-06-21 | High-pressure compression device for hydrogen filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110685141.1A CN113446518A (en) | 2021-06-21 | 2021-06-21 | High-pressure compression device for hydrogen filling station |
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| Publication Number | Publication Date |
|---|---|
| CN113446518A true CN113446518A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110685141.1A Pending CN113446518A (en) | 2021-06-21 | 2021-06-21 | High-pressure compression device for hydrogen filling station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117006406A (en) * | 2023-08-16 | 2023-11-07 | 武汉齐达康能源装备有限公司 | Hydraulic compressor device for natural gas filling substation and use method |
-
2021
- 2021-06-21 CN CN202110685141.1A patent/CN113446518A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117006406A (en) * | 2023-08-16 | 2023-11-07 | 武汉齐达康能源装备有限公司 | Hydraulic compressor device for natural gas filling substation and use method |
| CN117006406B (en) * | 2023-08-16 | 2024-01-26 | 武汉齐达康能源装备有限公司 | Hydraulic compressor device for natural gas filling substation and use method |
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