CN210739957U - Hydropower station construction branch tunnel hydrogen storage system - Google Patents
Hydropower station construction branch tunnel hydrogen storage system Download PDFInfo
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- CN210739957U CN210739957U CN201921656240.1U CN201921656240U CN210739957U CN 210739957 U CN210739957 U CN 210739957U CN 201921656240 U CN201921656240 U CN 201921656240U CN 210739957 U CN210739957 U CN 210739957U
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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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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Abstract
The utility model discloses a power station construction branch hole hydrogen storage system, the system includes the construction branch hole of power station, and the construction branch hole sets up below massif earth's surface line, including hydrogen transmission system, replacement purge system and fire prevention and explosion protection system: the hydrogen transmission system is used for storing the hydrogen transmitted by the hydrogen production system and transmitting the stored hydrogen to the hydrogen fuel cell through the pipeline system; the isolation maintenance system is used for performing nitrogen replacement and/or water filling replacement on the hydrogen transmission system; the fireproof and explosion-proof system is arranged around the inner wall of the construction branch tunnel and is used for providing fireproof and explosion-proof facilities for the construction branch tunnel hydrogen storage system. The utility model stores hydrogen by utilizing the hydropower station construction branch tunnel, has good isolation, saves cost and effectively utilizes space; the method can be directly applied to underground hydropower stations, and has important significance for development, utilization and popularization of hydrogen energy in the hydropower stations.
Description
Technical Field
The utility model relates to a water conservancy water and electricity electromechanical technical field specifically indicates a power station construction branch tunnel hydrogen storage system.
Background
China has abundant water resources, and hydropower construction achieves the remarkable achievement, so that the economic and social benefits are remarkable, but certain problems which cannot be ignored exist. If the electricity load of the power transmission area of part of water power stations is not coordinated with natural runoff, the water abandoning phenomenon of the power stations in the flood season is serious, and the electricity quantity of the water abandoning in Sichuan is up to 350 hundred million kilowatts in 2020 by incomplete estimation, and the Sichuan water and electricity are under huge absorption pressure.
In recent years, research on water electrolysis hydrogen production technology is increasingly paid attention and supported worldwide. Therefore, the hydropower station is used for producing hydrogen by electrolysis, the problem of water and electricity consumption in the case of surplus electric power can be effectively solved, the utilization rate of water resources can be improved, and the water abandonment of the hydropower station in the flood season can be reduced. At present, hydrogen storage cost is high, requirements on fire prevention and explosion prevention are high, hydrogen production capacity of a hydropower station is high, and a hydropower station hydrogen storage technology becomes a problem to be solved urgently.
Disclosure of Invention
The utility model aims at solving the weak point that above-mentioned background art exists, and proposed a power station construction branch hole hydrogen storage system, utilize the interim construction branch hole of construction period promptly, as the storage and the check station of power station hydrogen, the isolation is good, has both saved the cost and has effectively utilized the space again, has important meaning for the hydrogen energy is popularized and applied in the power station.
In order to realize the above object, the utility model relates to a hydrogen storage system is stored up in power station construction branch hole, including the construction branch hole of power station, its special character lies in, the construction branch hole sets up below massif earth's surface line, including hydrogen transmission system, replacement purge system and fire prevention and explosion protection system:
the hydrogen transmission system comprises a plurality of hydrogen storage tanks, and each hydrogen storage tank is provided with a valve communicated with the hydrogen production system and a valve communicated with the hydrogen fuel cell;
the replacement purging system comprises hydrogen packaging grids and a nitrogen packaging grid, the number of the hydrogen packaging grids is the same as that of the hydrogen storage tank, the output end of each hydrogen packaging grid is connected with a hydrogen fuel cell, a replacement pipeline is arranged between each nitrogen packaging grid and the hydrogen storage tank, and a nitrogen conveying pipeline main valve and a nitrogen conveying branch valve communicated with the hydrogen storage tank are arranged on each replacement pipeline;
the fire and explosion protection system is including setting up the ventilation hole that outside space communicates on construction branch tunnel top and massif earth's surface line, the bottom in ventilation hole is provided with the fan, still including setting up in construction branch tunnel all around prevent hot wall and hydrogen concentration alarm instrument.
Furthermore, the bottom slope of the construction branch tunnel is smooth, and surrounding rocks of the cavern are stable.
Furthermore, the bottom of each hydrogen storage tank is provided with a drain outlet, and the drain outlet collects sewage of the construction branch hole through a drain pipe.
Furthermore, the hydrogen container grid is fixed by a special frame, and a gas collecting pipe is adopted to combine a plurality of high-pressure hydrogen steel cylinder interfaces in parallel.
Further, the fire-proof wall is a non-combustible solid wall with the height not less than 2.5 m.
Further, the number of the hydrogen storage tanks is three.
Compared with the prior art, the utility model discloses the beneficial effect who has includes:
(1) the utility model discloses the technique utilizes power station construction branch tunnel to store up hydrogen, and the isolation is good, has not only saved the cost but also effectively utilized the space.
(2) The utility model discloses the technique can directly be applied to groundwater power station, and is significant to the development and utilization and the popularization of the hydrogen energy in the power station.
Drawings
Fig. 1 is the structural schematic diagram of the utility model relates to a hydropower station construction branch tunnel hydrogen storage system.
Fig. 2 is a schematic diagram of the position of the construction branch tunnel in the hydropower station.
In the figure: the construction branch tunnel 1, the ventilation tunnel 2, the hydrogen storage tank 3, the hydrogen packaging grid 4, the nitrogen packaging grid 5, the valves 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.11, 6.13, 6.15, the sewage valves 6.7, 6.8, 6.9, the nitrogen conveying branch valves 6.10, 6.12, 6.14, the nitrogen conveying pipeline main valve 6.16, the grounding wire 7, the firewall 8, the fan 9, the hydrogen concentration alarm 10, the sewage pipe 11, the pressure gauge 12 and the flowmeter 13.
Detailed Description
In order to make the technical solution and the advantages of the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and the embodiments.
As shown in fig. 1 and fig. 2, the utility model provides a hydropower station construction branch tunnel hydrogen storage system, which comprises a construction branch tunnel 1 arranged below a mountain surface line in the hydropower station. The construction branch hole 1 comprises a hydrogen transmission system, a replacement purging system and a fire and explosion prevention system. The hydrogen transmission system is used for storing the hydrogen transmitted by the hydrogen production system and transmitting the stored hydrogen to the hydrogen fuel cell through the pipeline system; the isolation maintenance system is used for performing nitrogen replacement and/or water filling replacement on the hydrogen transmission system; the fireproof and explosion-proof system is arranged around the inner wall of the construction branch tunnel 1 and used for providing fireproof and explosion-proof facilities for the construction branch tunnel hydrogen storage system. Construction branch tunnel requires smooth bottom slope and good stability of chamber surrounding rock.
The hydrogen transmission system comprises a plurality of hydrogen storage tanks 3, wherein the number of the hydrogen storage tanks 3 is three in the embodiment, and the design pressure is 1.0-20 MPa. The number and specification of the hydrogen storage tanks 3 are determined by the hydrogen production scale of the power station, and vertical or horizontal hydrogen storage tanks can be selected according to the height of the construction branch hole 1. Each hydrogen storage tank 3 is provided with a valve communicating with the hydrogen production system and a valve communicating with the hydrogen fuel cell. The three hydrogen storage tanks 3.1, 3.2 and 3.2 are respectively communicated with a hydrogen production system through valves 6.1, 6.2 and 6.3 and communicated with a hydrogen fuel cell through valves 6.4, 6.5 and 6.6. Pressure gauges 12 and flow meters 13 are respectively arranged on pipelines between the three hydrogen storage tanks 3.1, 3.2 and the valves 6.4, 6.5 and 6.6. The pressure gauge 12 is used for monitoring the air pressure at the outlet of the hydrogen storage tank 3 and the air pressure of the hydrogen conveying pipeline; the flow meter 13 is used for monitoring the hydrogen output flow of the outlet of the hydrogen storage tank 3. The bottoms of the three hydrogen storage tanks 3.1, 3.2 and 3.2 are respectively provided with a drain outlet which is respectively communicated with a drain pipe 11 through drain valves 6.7, 6.8 and 6.9, and the drain pipe 11 is used for collecting and draining sewage of the construction branch hole 1.
The replacement purging system comprises hydrogen container grids 4 and a nitrogen container grid 5 which are the same in number as the hydrogen storage tanks 3. The hydrogen packaging grid 4 is fixed by a special frame, and a plurality of high-pressure hydrogen steel cylinder interfaces are combined in parallel by adopting a gas collecting pipe. The output ends of the three hydrogen container lattices 4.1, 4.2 and 4.2 are respectively connected with a hydrogen fuel cell through valves 6.11, 6.13 and 6.15, a replacement pipeline is arranged between the nitrogen container lattice 5 and the hydrogen storage tank 3, a nitrogen conveying pipeline main valve 6.16 and nitrogen conveying branch valves 6.10, 6.12 and 6.14 which are respectively communicated with the three hydrogen storage tanks 3.1, 3.2 and 3.2 are arranged on the replacement pipeline, and pressure gauges 12 are also respectively arranged on pipelines of the hydrogen storage tanks 3.1, 3.2 and the nitrogen conveying branch valves 6.10, 6.12 and 6.14.
The fire-proof and explosion-proof system comprises a ventilation hole 2 which is arranged on the top of a construction branch hole 1 and communicated with the external space on the mountain surface line, a fan 9 is arranged at the bottom of the ventilation hole 2, and the fan 9 is used for ventilation of the construction branch hole. The fire-proof and explosion-proof system further comprises a fire wall 8, a grounding wire 7 and a hydrogen concentration alarm 10 which are arranged around the construction branch tunnel 1. The hydrogen concentration alarm 10 is used for detecting the hydrogen concentration of the construction branch hole. The firewall 8 is a non-combustible solid wall with the height not less than 2.5 m. When the concentration of hydrogen in the construction branch hole reaches or exceeds a preset alarm value of 50ppm, the hydrogen concentration alarm instrument 10 immediately gives out sound and light alarm and drives the fan 9, so that safety cut-off measures can be taken in time.
The fire-proof and explosion-proof system is an independent unit, and the hydrogen transmission system and the replacement purging system are switched by a valve. The hydrogen gas transfer system is an independent operation system in units of each hydrogen storage tank 3, and when it is operated, the replacement purge system is brought out of operation. When one of the hydrogen storage tanks 3 is overhauled, the hydrogen container grid 4 is started for standby operation, the hydrogen storage tank 3 exits from the hydrogen transmission system, and the replacement purging system is put into use. And when the maintenance is finished, the replacement purging system can be withdrawn.
The utility model discloses the during operation, including transmission hydrogen step and replacement purge step, concrete process includes:
hydrogen gas transmission: when the hydrogen transmission system is started to operate, the valves 6.1-6.3 are opened to receive hydrogen of the hydrogen production device; opening valves 6.4-6.6, and conveying hydrogen; and 6.7-6.16 closing the valve.
Replacement purging: when the replacement purge system of the hydrogen storage tank 3.1 is started, the hydrogen storage tank 3.1 is first isolated: and (3) closing the valve 6.1, stopping supplying gas to the hydrogen production device, monitoring an outlet pressure gauge 12 of the hydrogen storage tank 3.1, and closing the valve 6.4 when the pressure is reduced to be below 0.8 Mpa. The valve 6.15 is opened to start the spare hydrogen container 4.3 to supply gas for the hydrogen fuel cell. Then, the hydrogen storage tank 3.1 is overhauled: the evacuation door of the hydrogen storage tank 3.1 is opened until the pressure drops to 0.2Mpa, and then the evacuation door is closed. The drain outlet at the bottom of the hydrogen storage tank 3.1 is connected with a replacement pipeline of the nitrogen container grid 5, firstly, a valve 6.16 on the nitrogen container grid 5 is opened, a valve 6.10 of a nitrogen conveying pipeline is opened, a port valve 6.7 at the bottom of the hydrogen storage tank 3.1 is opened for nitrogen replacement, and when the content of hydrogen in the hydrogen storage tank 3.1 is less than or equal to 2 percent, the replacement is stopped. And (4) closing the valve 6.16 and the valve 6.10, cutting off nitrogen replacement, performing water filling replacement in the same operation, and performing tightness and related inspection work on the hydrogen storage tank 3.1. After the test and maintenance are finished, the water in the hydrogen storage tank 3.1 is drained, the drained water is drained to a drainage pipe 11 of the construction branch tunnel through a drainage outlet of the hydrogen storage tank, the nitrogen replacement work is repeated, and after the nitrogen replacement is qualified, a valve 6.4 between the hydrogen storage tank 3.1 and the hydrogen transmission system is opened again.
The maintenance and isolation work of the hydrogen storage tanks 3.2 and 3.3 can be carried out in sequence according to the steps.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Those not described in detail in this specification are within the skill of the art.
Claims (6)
1. The utility model provides a power station construction branch tunnel hydrogen storage system, includes power station's construction branch tunnel (1), its characterized in that: the construction branch tunnel (1) is arranged below a mountain surface line and comprises a hydrogen transmission system, a replacement purging system and a fireproof and explosion-proof system:
the hydrogen transmission system comprises a plurality of hydrogen storage tanks (3), and each hydrogen storage tank (3) is provided with a valve communicated with the hydrogen production system and a valve communicated with the hydrogen fuel cell;
the replacement purging system comprises hydrogen packaging grids (4) and a nitrogen packaging grid (5), the number of the hydrogen packaging grids is the same as that of the hydrogen storage tank (3), the output end of each hydrogen packaging grid (4) is connected with a hydrogen fuel cell, a replacement pipeline is arranged between each nitrogen packaging grid (5) and the hydrogen storage tank (3), and a nitrogen conveying branch valve communicated with a nitrogen conveying pipeline main valve (6.16) and the hydrogen storage tank (3) is arranged on each replacement pipeline;
the fire and explosion protection system comprises a ventilation hole (2) which is arranged at the top of a construction branch hole (1) and communicated with the external space on a mountain surface line, a fan (9) is arranged at the bottom of the ventilation hole (2), and the fire and explosion protection system further comprises a fire prevention wall (8) and a hydrogen concentration alarm instrument (10) which are arranged around the construction branch hole (1).
2. The hydropower station construction branch tunnel hydrogen storage system according to claim 1, wherein: the bottom slope of the construction branch tunnel (1) is smooth, and surrounding rocks of the cavern are stable.
3. The hydropower station construction branch tunnel hydrogen storage system according to claim 1, wherein: the bottom of each hydrogen storage tank (3) is provided with a sewage draining exit which collects sewage of the construction branch tunnel (1) through a sewage draining pipe (11).
4. The hydropower station construction branch tunnel hydrogen storage system according to claim 1, wherein: the hydrogen packaging grid (4) is fixed by a special frame, and a plurality of high-pressure hydrogen steel cylinder interfaces are combined in parallel by adopting a gas collecting pipe.
5. The hydropower station construction branch tunnel hydrogen storage system according to claim 1, wherein: the firewall (8) is a non-combustible solid wall, and the height of the firewall is not less than 2.5 m.
6. The hydropower station construction branch tunnel hydrogen storage system according to claim 1, wherein: the number of the hydrogen storage tanks (3) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656240.1U CN210739957U (en) | 2019-09-30 | 2019-09-30 | Hydropower station construction branch tunnel hydrogen storage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921656240.1U CN210739957U (en) | 2019-09-30 | 2019-09-30 | Hydropower station construction branch tunnel hydrogen storage system |
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| CN210739957U true CN210739957U (en) | 2020-06-12 |
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| CN201921656240.1U Active CN210739957U (en) | 2019-09-30 | 2019-09-30 | Hydropower station construction branch tunnel hydrogen storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566807A (en) * | 2019-09-30 | 2019-12-13 | 长江勘测规划设计研究有限责任公司 | Hydropower station construction branch tunnel hydrogen storage system and hydrogen storage method |
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2019
- 2019-09-30 CN CN201921656240.1U patent/CN210739957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566807A (en) * | 2019-09-30 | 2019-12-13 | 长江勘测规划设计研究有限责任公司 | Hydropower station construction branch tunnel hydrogen storage system and hydrogen storage method |
| CN110566807B (en) * | 2019-09-30 | 2024-04-26 | 长江勘测规划设计研究有限责任公司 | Hydropower station construction support hole hydrogen storage system and hydrogen storage method |
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