CN210014208U - Device for improving HCNG unloading efficiency and saving energy - Google Patents
Device for improving HCNG unloading efficiency and saving energy Download PDFInfo
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- CN210014208U CN210014208U CN201920884659.6U CN201920884659U CN210014208U CN 210014208 U CN210014208 U CN 210014208U CN 201920884659 U CN201920884659 U CN 201920884659U CN 210014208 U CN210014208 U CN 210014208U
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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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Abstract
The utility model belongs to the HCNG gas station field, in particular to a device for improving HCNG unloading efficiency and energy saving, a hydrogen unloading pipeline and a hydrogen branch pipeline are respectively connected with a gas mixing device, one end of the hydrogen unloading pipeline is connected with a hydrogen tank car to be unloaded, the other end is connected with the gas mixing device, a hydrogen compressor and a buffer tank are respectively arranged on the hydrogen unloading pipeline, and hydrogen pressurized by the hydrogen compressor enters the buffer tank to keep hydrogen stable; one end of the hydrogen branch pipeline is connected with the gas mixing equipment, the other end of the hydrogen branch pipeline is connected with one end of the hydrogen gas discharging pipeline, and the hydrogen branch pipeline and the hydrogen gas discharging pipeline are respectively provided with a control valve for controlling the pipeline to be opened and closed. The utility model discloses set up hydrogen supply main line and hydrogen supply branch road, utilized the high pressure of hydrogen tank wagon self to provide the air entrainment air supply for low reaches air entrainment equipment, reduced the time that hydrogen got into the compressor and avoided the repeated doing work of compressor.
Description
Technical Field
The utility model belongs to HCNG gas station field, specifically speaking are device that improves HCNG efficiency energy saving of unloading.
Background
The HCNG (mixed hydrogen natural gas) filling station is a station of an urban filling system, receives compressed natural gas from a CNG (compressed natural gas) filling parent station of a surrounding city and hydrogen from a hydrogen filling parent station of the surrounding city, and provides filling service for an HCNG vehicle through pipeline filling equipment after gas mixing, metering and compression.
The HCNG gas station generally provides gas sources for urban HCNG automobiles, and the compressor is the main equipment of the HCNG gas station. Generally, when the pressure of the hydrogen tank car is reduced from 20MPa to 3MPa, the unloading of the hydrogen tank car is finished, and hydrogen is conveyed to a hydrogen compressor through a pipeline to be pressurized and then flows to a gas mixing device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an improve HCNG efficiency energy saving's of unloading device. The device can directly enter the rear-end gas mixing equipment, and avoids energy waste caused by repeated work done in the hydrogen compression system.
The purpose of the utility model is realized through the following technical scheme:
the utility model comprises a hydrogen gas discharging pipeline, a hydrogen gas emergency cut-off valve, a hydrogen gas compressor, a buffer tank, an emergency cut-off valve, a hydrogen gas branch pipeline, a branch manual cut-off valve and a gas mixing device, wherein the hydrogen gas discharging pipeline and the hydrogen gas branch pipeline are respectively connected with the gas mixing device, one end of the hydrogen gas discharging pipeline is connected with a hydrogen tank car to be discharged, the other end is connected with the gas mixing device, the hydrogen gas discharging pipeline is respectively provided with the hydrogen gas compressor and the buffer tank, and the hydrogen gas pressurized by the hydrogen gas compressor enters the buffer tank to keep the hydrogen gas stable; one end of the hydrogen branch pipeline is connected with the gas mixing equipment, the other end of the hydrogen branch pipeline is connected with one end of the hydrogen gas discharging pipeline, and the hydrogen branch pipeline and the hydrogen gas discharging pipeline are respectively provided with a control valve for controlling the pipeline to be opened and closed;
wherein: the control valve on the hydrogen gas discharging pipeline comprises a hydrogen emergency cut-off valve and an emergency cut-off valve, the hydrogen gas discharging pipeline on the gas inlet side of the hydrogen compressor is provided with the hydrogen emergency cut-off valve, and the hydrogen gas discharging pipeline between the gas outlet side of the buffer tank and the gas mixing equipment is provided with the emergency cut-off valve; the other end of the hydrogen branch pipeline is connected to a hydrogen gas discharging pipeline on the gas inlet side of the hydrogen emergency cut-off valve;
the control valve on the hydrogen branch pipeline comprises a branch manual cut-off valve and a branch check valve, and the branch check valve is arranged on the hydrogen branch pipeline between the branch manual cut-off valve and the gas mixing equipment;
the hydrogen compressors are two stages, namely a first-stage hydrogen compressor and a second-stage hydrogen compressor which are connected in series;
the device for improving the HCNG unloading efficiency and saving energy also comprises a recovery tank, wherein the recovery tank is respectively connected with the hydrogen gas unloading pipeline and the buffer tank through connecting pipelines, and gas and impurities in the recovered hydrogen gas unloading pipeline and the buffer tank are discharged through pipelines;
one end of the hydrogen gas unloading pipeline is connected with a hydrogen tank car to be unloaded through an air unloading hose, and a control valve is installed on the hydrogen gas unloading pipeline at the end.
The utility model discloses an advantage does with positive effect:
1. the utility model discloses set up hydrogen supply main line (hydrogen gas discharge pipe way) and hydrogen supply branch road (hydrogen branch pipeline), utilized the high pressure of hydrogen tank wagon self to provide the air entrainment air supply for low reaches air entrainment equipment, reduced the time that hydrogen got into the compressor and avoided the repeated work of compressor.
2. The utility model discloses a parallelly connected setting of hydrogen supply main line and hydrogen supply branch road to set up the control valve respectively, fully guaranteed the security of pipeline.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: 1 is the hydrogen pipeline of unloading, 2 is hydrogen emergency cut-off valve, 3 is the one-level hydrogen compressor, 4 is the second grade hydrogen compressor, 5 is the buffer tank, 6 is the emergency cut-off valve, 7 is the hydrogen branch pipeline, 8 is the manual trip valve of branch line, 9 is the branch line check valve, 10 is the gas mixing equipment, 11 is the recovery tank, 12 is the hose of unloading, 13 is the control valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises a hydrogen gas discharging pipeline 1, a hydrogen emergency cut-off valve 2, a hydrogen compressor, a buffer tank 5, an emergency cut-off valve 6, a hydrogen branch pipeline 7, a branch manual cut-off valve 8, a branch check valve 9 and a gas mixing device 10, wherein the hydrogen gas discharging pipeline 1 and the hydrogen branch pipeline 7 are respectively connected with the gas mixing device 10, one end of the hydrogen gas discharging pipeline 1 is connected with a hydrogen tank car to be discharged through a gas discharging hose 12, and a control valve 13 is arranged on the hydrogen gas discharging pipeline 1 at the end; the other end of the hydrogen gas discharge pipeline 1 is connected to the gas mixing equipment 10, a hydrogen gas compressor and a buffer tank 5 are respectively arranged on the hydrogen gas discharge pipeline 1, and hydrogen gas pressurized by the hydrogen gas compressor enters the buffer tank 5 to keep hydrogen gas stable; the hydrogen compressor of this embodiment is two stages, which are a first-stage hydrogen compressor 3 and a second-stage hydrogen compressor 4 connected in series. One end of the hydrogen branch pipeline 7 is connected to the gas mixing device 10, the other end is connected to one end of the hydrogen gas discharge pipeline 1, and the hydrogen branch pipeline 7 and the hydrogen gas discharge pipeline 1 are respectively provided with a control valve for controlling the pipeline switch. The control valve on the hydrogen gas discharging pipeline 1 comprises a hydrogen emergency cut-off valve 2 and an emergency cut-off valve 6, the hydrogen gas discharging pipeline 1 on the gas inlet side of the first-stage hydrogen compressor 3 is provided with the hydrogen emergency cut-off valve 2, and the hydrogen gas discharging pipeline 1 between the gas outlet side of the buffer tank 5 and the gas mixing equipment 10 is provided with the emergency cut-off valve 6. The other end of the hydrogen branch pipeline 7 is connected to the hydrogen gas discharge pipeline 1 on the gas inlet side of the hydrogen emergency cut-off valve 2, the control valve on the hydrogen branch pipeline 7 comprises a branch manual cut-off valve 8 and a branch check valve 9, and the branch check valve 9 is arranged on the hydrogen branch pipeline 7 between the branch manual cut-off valve 8 and the gas mixing device 10 to prevent the hydrogen gas in the pipeline from flowing back. The utility model discloses a hydrogen emergency cut-off valve 2 and emergency cut-off valve 6 link to each other with control system respectively, and this control system is prior art.
The utility model discloses still including retrieving jar 11, should retrieve jar 11 and unload gas pipeline 1 and buffer tank 5 through connecting tube and hydrogen respectively and link to each other, the hydrogen of retrieving unloads gas pipeline 1 in and the buffer tank 5 in gas and impurity pass through the pipeline and discharge.
The utility model discloses a theory of operation does:
in actual operation, when the hydrogen tank car in the HCNG station is just about to unload, the pressure of the tank car is usually 20MPa, at this time, the control system controls the hydrogen emergency cut-off valve 2 and the emergency cut-off valve 6 to be closed, the branch manual cut-off valve 8 is manually opened, and the pressure of the hydrogen tank car is used for supplying gas to the gas mixing device 10. When the pressure of the hydrogen tank car is lower than a set value (such as 15MPa), the branch manual cut-off valve 8 is closed, the control system controls the hydrogen emergency cut-off valve 2 and the emergency cut-off valve 6 to be opened simultaneously, hydrogen in the hydrogen tank car enters the first-stage hydrogen compressor 3 for pressurization after passing through the hydrogen emergency cut-off valve 2 and then enters the second-stage hydrogen compressor 4 for pressurization, the pressure of the pressurized gas is not stable, the pressurized gas needs to enter the buffer tank 5, the pressurized gas is kept stable, the stabilized hydrogen enters the gas mixing equipment 10 through the hydrogen gas discharge pipeline 1, and therefore the hydrogen gas is pressurized and stable, and the purpose of hydrogen pressurization is achieved.
The HCNG gas station is the latest gas station in cities, can provide gas sources for HCNG vehicles in the cities, has more visual environment-friendly effect than the common CNG gas station, and greatly reduces the discharge amount of carbon dioxide in the cities. The utility model discloses the energy of compression power equipment has been practiced thrift to the pressure of hydrogen self in the make full use of hydrogen tank wagon.
Claims (6)
1. The utility model provides an improve HCNG efficiency energy saving's of unloading device which characterized in that: the hydrogen mixing device comprises a hydrogen discharging pipeline (1), a hydrogen emergency cut-off valve (2), a hydrogen compressor, a buffer tank (5), an emergency cut-off valve (6), a hydrogen branch pipeline (7), a branch manual cut-off valve (8) and a gas mixing device (10), wherein the hydrogen discharging pipeline (1) and the hydrogen branch pipeline (7) are respectively connected with the gas mixing device (10), one end of the hydrogen discharging pipeline (1) is connected with a hydrogen tank car to be discharged, the other end of the hydrogen discharging pipeline is connected with the gas mixing device (10), the hydrogen compressor and the buffer tank (5) are respectively installed on the hydrogen discharging pipeline (1), and hydrogen pressurized by the hydrogen compressor enters the buffer tank (5) to keep hydrogen stable; one end of the hydrogen branch pipeline (7) is connected with the gas mixing equipment (10), the other end of the hydrogen branch pipeline is connected with one end of the hydrogen gas discharging pipeline (1), and control valves for controlling the pipeline switches are respectively arranged on the hydrogen branch pipeline (7) and the hydrogen gas discharging pipeline (1).
2. An energy saving device for improving unloading efficiency of HCNG according to claim 1, wherein: the control valve on the hydrogen gas discharging pipeline (1) comprises a hydrogen emergency cut-off valve (2) and an emergency cut-off valve (6), the hydrogen emergency cut-off valve (2) is installed on the hydrogen gas discharging pipeline (1) on the gas inlet side of the hydrogen compressor, and the emergency cut-off valve (6) is installed on the hydrogen gas discharging pipeline (1) between the gas outlet side of the buffer tank (5) and the gas mixing equipment (10); the other end of the hydrogen branch pipeline (7) is connected to the hydrogen gas discharging pipeline (1) on the gas inlet side of the hydrogen emergency cut-off valve (2).
3. An energy saving device for improving unloading efficiency of HCNG according to claim 1, wherein: the control valve on the hydrogen branch pipeline (7) comprises a branch manual cut-off valve (8) and a branch check valve (9), and the branch check valve (9) is arranged on the hydrogen branch pipeline (7) between the branch manual cut-off valve (8) and the gas mixing equipment (10).
4. An energy saving device for improving unloading efficiency of HCNG according to claim 1, wherein: the hydrogen compressor is two stages, namely a first-stage hydrogen compressor (3) and a second-stage hydrogen compressor (4) which are connected in series.
5. An energy saving device for improving unloading efficiency of HCNG according to claim 1, wherein: the device for improving the HCNG unloading efficiency and saving energy further comprises a recovery tank (11), the recovery tank (11) is respectively connected with the hydrogen gas unloading pipeline (1) and the buffer tank (5) through a connecting pipeline, and gas and impurities in the recovered hydrogen gas unloading pipeline (1) and the buffer tank (5) are discharged through pipelines.
6. An energy saving device for improving unloading efficiency of HCNG according to claim 1, wherein: one end of the hydrogen gas unloading pipeline (1) is connected with a hydrogen tank car to be unloaded through a gas unloading hose (12), and a control valve (13) is installed on the hydrogen gas unloading pipeline (1) at the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920884659.6U CN210014208U (en) | 2019-06-12 | 2019-06-12 | Device for improving HCNG unloading efficiency and saving energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920884659.6U CN210014208U (en) | 2019-06-12 | 2019-06-12 | Device for improving HCNG unloading efficiency and saving energy |
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| Publication Number | Publication Date |
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| CN210014208U true CN210014208U (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920884659.6U Active CN210014208U (en) | 2019-06-12 | 2019-06-12 | Device for improving HCNG unloading efficiency and saving energy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339697A (en) * | 2021-06-07 | 2021-09-03 | 佛山绿色发展创新研究院 | Combined control method and system for discharging gas from high-pressure tube bundle vehicle to gas discharging column |
| CN114877248A (en) * | 2022-05-12 | 2022-08-09 | 中国华能集团清洁能源技术研究院有限公司 | Natural gas hydrogen-loading control system and control method |
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2019
- 2019-06-12 CN CN201920884659.6U patent/CN210014208U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339697A (en) * | 2021-06-07 | 2021-09-03 | 佛山绿色发展创新研究院 | Combined control method and system for discharging gas from high-pressure tube bundle vehicle to gas discharging column |
| CN114877248A (en) * | 2022-05-12 | 2022-08-09 | 中国华能集团清洁能源技术研究院有限公司 | Natural gas hydrogen-loading control system and control method |
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Address after: 110021 No. 33, Zhaogong North Street, Tiexi District, Shenyang City, Liaoning Province Patentee after: CCCC urban energy research and Design Institute Co.,Ltd. Address before: 110026 No.33, Zhaogong street, Tiexi District, Shenyang City, Liaoning Province Patentee before: CCCC GAS & HEAT RESEARCH AND DESIGN INSTITUTE Co.,Ltd. |
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