CN115680771A - Underground hydrogen storage device, system and method - Google Patents
Underground hydrogen storage device, system and method Download PDFInfo
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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 invention discloses an underground hydrogen storage device, which relates to the technical field of underground hydrogen storage and comprises a hydrogen storage cavern, wherein the hydrogen storage cavern is used for storing hydrogen and is positioned in an underground rock stratum; be provided with sealed lining layer on the inner wall of hydrogen storage cavern, sealed lining layer includes sealed inner liner and lining layer from interior to exterior that sets gradually, sealed inner liner can be right hydrogen in the hydrogen storage cavern seals, lining layer is located sealed inner liner with between the inner wall of hydrogen storage cavern, can be right sealed inner liner is fixed. The invention also discloses an underground hydrogen storage system and a method. The invention can reduce the hydrogen loss caused by biochemical reaction, improve the volume hydrogen storage efficiency, has flexible geological conditions and is not restricted by a huge thick rock salt stratum, and has obvious economy and safety.
Description
Technical Field
The invention relates to the technical field of underground hydrogen storage, in particular to an underground hydrogen storage device, system and method.
Background
The large use of fossil fuels causes excessive emission of carbon dioxide, and the global warming caused thereby makes the energy conversion problem a global problem of life and death. Hydrogen is the most abundant element in nature, and its source is very extensive, 1m 3 Hydrogen was combusted to generate 12.7 megajoules of energy at 1m 3 Methane generates 40 megajoules of heat. Although the heating value of hydrogen is low, the specific energy of hydrogen is highest in all fuels, and the final product of hydrogen after passing through a fuel cell or after combustion is H 2 O, no CO in the process 2 And the emission is also free from pollutant emission, so that the hydrogen energy is regarded as the best clean energy in the future and has great development potential. The non-continuous electric energy generated by renewable energy sources such as solar energy, wind energy, water energy, geothermal energy and the like is used for hydrogen production and storage by electrolyzing water and then stably supplied, and is one of important schemes for relieving global warming and negative effects thereof.
However, the hydrogen has low energy density, and the storage mode is always a worldwide problem, so that the mass storage is more difficult. Since the loss of hydrogen in the liquefaction process is very large, the operation is complex and the cost is high, and the compressed gaseous storage becomes the only scheme for large-scale storage of hydrogen. Compared with the above-ground storage mode, the underground storage of the hydrogen has more advantages in the aspects of safety, environmental protection, storage capacity scale and investment cost. The underground hydrogen storage can guarantee the national energy supply safety, fully utilize the underground storage space, and play an important role in improving the energy utilization efficiency, saving energy, reducing emission, reducing the storage cost, regulating peaks, and safely and stably supplying gas.
Due to the obvious difference of the physical and chemical characteristics of the hydrogen and the natural gas, the influence of hydrogen brittleness of the metal material environment, the biochemical reaction of the hydrogen and microorganisms and mineral substances and the like, the traditional underground gas storage mode is not suitable for directly applying the hydrogen.
In the scheme disclosed in the Chinese invention patent (CN 114059083A), hydrogen produced by solar power generation is finally injected into a waste oil-gas reservoir, the method can utilize solar energy to continuously produce hydrogen, but sulfides and ubiquitous microorganisms existing in a large amount in the waste oil-gas reservoir can cause reduction reaction of the hydrogen, so that the obvious loss of the hydrogen is caused, resources are wasted, and the cost is increased by a purification process and equipment for producing the hydrogen; in the scheme disclosed by the Chinese invention patent (CN 108529124A), hydrogen is stored in a salt cavern dissolving cavity by carrying out preparation works such as geological model selection, column material selection, cavity airtightness detection, stability and tightness analysis and evaluation, and the like.
Therefore, the existing underground hydrogen storage mode has the problems of serious hydrogen loss or restriction by geological conditions and the like; therefore, it is desirable to provide a new underground hydrogen storage method to solve the above problems in the prior art.
Disclosure of Invention
The invention aims to provide an underground hydrogen storage device, an underground hydrogen storage system and an underground hydrogen storage method, which are used for solving the problems in the prior art, can reduce the hydrogen loss caused by biochemical reaction, improve the volume hydrogen storage efficiency, have flexible geological conditions, are not restricted by a huge thick salt rock stratum and have remarkable economical efficiency and safety.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an underground hydrogen storage device, which comprises a hydrogen storage cavern, wherein the hydrogen storage cavern is used for storing hydrogen and is positioned in an underground rock stratum; be provided with sealed lining layer on the inner wall of hydrogen storage cavern, sealed lining layer includes sealed inner liner and lining layer from interior to exterior that sets gradually, sealed inner liner can be right hydrogen in the hydrogen storage cavern seals, lining layer is located sealed inner liner with between the inner wall of hydrogen storage cavern, can be right sealed inner liner is fixed.
Preferably, the hydrogen storage cavern is located in an underground hard rock layer, and the burial depth of the hydrogen storage cavern is below 100 meters underground.
Preferably, the sealing lining layer is a steel lining layer, and the lining layer comprises a concrete sliding layer, a reinforced concrete layer and a gunite concrete layer which are sequentially arranged from inside to outside; wherein the content of the cushion gas in the hydrogen storage rock cavern is 20-30% of that of hydrogen, and the cushion gas is nitrogen.
Preferably, a water and gas discharging system is further arranged in the hydrogen storage cavern, the water and gas discharging system comprises an annular horizontal gas collecting pipe, a vertical water discharging pipe and a ground gas discharging pipe, the annular horizontal gas collecting pipe is arranged at the bottom and the top of the hydrogen storage cavern, and the annular horizontal gas collecting pipe is connected with the ground gas discharging pipe; the vertical drain pipe is arranged in the shotcrete layer, and the vertical drain pipe is annularly provided with a plurality of.
The invention also provides an underground hydrogen storage system which comprises a hydrogen transmission system and the underground hydrogen storage device, wherein the hydrogen transmission system comprises a vertical shaft, the bottom end of the vertical shaft is communicated with the hydrogen storage rock cavern, the top end of the vertical shaft is positioned on the ground surface and can be respectively communicated with a hydrogen production end and a hydrogen transportation pipe network through a gas injection pipe and a gas production pipe, the gas injection pipe is provided with a gas injection valve, and the gas production pipe is provided with a gas production valve.
Preferably, the vertical shaft is a gas injection and production vertical shaft, the top of the gas injection and production vertical shaft is sealed through a sealing structure, a gas injection interface is arranged on the sealing structure and is connected with the gas injection pipe, and a gas production interface is further arranged on the sealing structure and is connected with the gas production pipe.
Preferably, the underground hydrogen storage system is still including the tunnel system that is used for supplying staff and construction vehicle equipment business turn over, the tunnel system is including construction ramp, shaft tunnel, cave upper portion tunnel and cave lower part tunnel, the top of construction ramp is the entry of tunnel system, the bottom of construction ramp with cave upper portion tunnel and cave lower part tunnel is connected, cave upper portion tunnel and cave lower part tunnel respectively with the upper portion and the sub-unit connection of hydrogen storage cave, the construction ramp still passes through the shaft tunnel with the shaft is connected.
Preferably, the underground hydrogen storage system further comprises a monitoring system, the monitoring system comprises a sensor assembly and a ground receiving end, the sensor assembly is connected with the ground receiving end, the sensor assembly comprises a plurality of sensors, and the sensors are distributed around the outer layer of the sealing lining layer; wherein the sensors at least comprise a pressure sensor for monitoring the pressure of the hydrogen storage cavern, a temperature sensor for monitoring the temperature of the hydrogen storage cavern, and a water level sensor for monitoring underground water.
Preferably, the hydrogen storage caverns are provided with a plurality of hydrogen storage caverns, and each hydrogen storage cavern is connected with one gas injection and production vertical shaft.
The invention also provides an underground hydrogen storage method, which adopts the underground hydrogen storage system and comprises the following steps:
unstable gas injection: opening the gas injection valve, closing the gas production valve, and injecting the unstable hydrogen source prepared at the hydrogen production end into the hydrogen storage cavern through the vertical shaft for storage;
and (3) stable gas production: and closing the gas injection valve, opening the gas production valve, and discharging the hydrogen in the hydrogen storage cavern to the hydrogen transportation pipe network through the vertical shaft at a stable discharge capacity.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention can utilize the underground rock cavern excavated by the traditional technology as the hydrogen storage rock cavern, realizes large-scale hydrogen storage, can reduce the hydrogen loss caused by biochemical reaction as much as possible by the artificially constructed seal lining layer, improves the volume hydrogen storage efficiency, has low requirement on geological conditions, has remarkable site selection flexibility, is not restricted by a huge thick salt rock stratum, and has remarkable economy and safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an underground cavern hydrogen storage system provided by an embodiment of the invention;
FIG. 2 is a schematic illustration of a seal lining layer of an underground cavern hydrogen storage device provided by an embodiment of the invention;
FIG. 3 is a schematic diagram of a cavern group structure of an underground cavern hydrogen storage system provided by the embodiment of the invention;
wherein, 1 is the construction slope way, 2 is the shaft tunnel, 31 is cavern upper portion tunnel, 32 is cavern lower part tunnel, 4 is the notes gas production shaft, 5 is hydrogen storage cavern, 6 is the gas injection valve, 7 is the gas production valve, 8 is the sensor, 9 is the ground receiving terminal, 10 is sealed inner liner, 11 is the concrete sliding layer, 12 is reinforced concrete layer, 13 is vertical drain pipe, 14 is the shotcrete layer, 15 is the secret hard rock stratum, 16 is hydrogen manufacturing end, 17 is the gas injection pipe, 18 is the gas production pipe, 19 is the top soil layer, 20 is the mud rock stratum, 21 is the import of tunnel system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention aims to provide an underground hydrogen storage device, an underground hydrogen storage system and an underground hydrogen storage method, which are used for solving the problems in the prior art, can reduce the hydrogen loss caused by biochemical reaction, improve the volume hydrogen storage efficiency, have flexible geological conditions, are not restricted by a huge thick salt rock stratum and have remarkable economical efficiency and safety.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1-3, the present embodiment provides an underground hydrogen storage device, which includes a hydrogen storage cavern 5, wherein the hydrogen storage cavern 5 is used for storing hydrogen, the hydrogen storage cavern 5 is located in an underground hard rock layer 15, and the hydrogen storage cavern 5 should satisfy the following geological conditions: a. the low-permeability compact rock mass prevents gas from leaking in a large range through the rock stratum; b. the stratum is a hard rock stratum mainly comprising a granite stratum, and the hardness can be ensured so as to bear the operation pressure without generating cracks; c. the rock cavern is buried under the ground for 100 m. Be provided with sealed lining layer on the inner wall of hydrogen storage cavern 5, sealed lining layer includes from interior to exterior sealed inner liner layer 10 and the lining layer that sets gradually, sealed inner liner layer 10 can be right hydrogen in the hydrogen storage cavern 5 seals, the lining layer is located sealed inner liner layer 10 with between the inner wall of hydrogen storage cavern 5, can be right sealed inner liner layer 10 is fixed.
In the embodiment, the underground rock cavern excavated by the traditional technology can be used as the hydrogen storage rock cavern 5 to realize large-scale hydrogen storage, the artificially constructed seal lining layer can reduce the hydrogen loss caused by biochemical reaction as much as possible, the volume hydrogen storage efficiency is improved, the requirement on geological conditions is not high, the site selection flexibility is remarkable, the constraint of a huge thick salt rock stratum is avoided, and the economic efficiency and the safety are remarkable. Furthermore, the artificial lining is utilized to ensure the air tightness and stability, the hydrogen storage safety is improved while the space is saved, and the method has important significance for the integrated development, utilization and popularization of hydrogen energy production and storage.
As a preferred implementation manner, in this embodiment, the sealing lining layer 10 is a steel lining layer, and the lining layer includes a concrete sliding layer 11, a reinforced concrete layer 12, and a shotcrete layer 14, which are sequentially arranged from inside to outside; wherein,
the steel lining layer can prevent hydrogen permeation to play a sealing role, is made of austenitic stainless steel and is built in a welding mode, the thickness of the reinforced concrete layer 12 is 13-15mm, and the internal pressure is 15-30MPa;
the concrete sliding layer 11 adopts high-ductility concrete as a sliding buffer layer, and the thickness is about 170 mm;
the reinforced concrete layer 12 is connected with the inner wall of the hydrogen storage cavern 5 and the steel lining layer by adopting reinforced concrete and is reinforced by adopting a welded mesh mode, and the thickness of the reinforced concrete layer 12 is not less than 1.5m;
the shotcrete layer 14 is poured on the rock stratum on the inner wall of the rock cavern by adopting shotcrete;
the content of the cushion gas in the hydrogen storage cavern 5 is 20-30% of that of hydrogen so as to ensure the minimum working pressure, and nitrogen can be used as the cushion gas.
In this embodiment, a water and gas discharging system is further arranged in the hydrogen storage cavern 5, and the water and gas discharging system comprises an annular horizontal gas collecting pipe, a vertical water discharging pipe 13 and a ground gas discharging pipe; specifically, the annular horizontal gas collecting pipes are arranged at the bottom and the top of the hydrogen storage cavern 5 and are connected with the ground exhaust pipe, and an exhaust valve can be further arranged on the ground exhaust pipe; wherein, a plurality of gas collecting ports are arranged on the annular horizontal gas collecting pipe for collecting gas; when the hydrogen storage cave 5 is in a normal working state, the annular horizontal gas collecting pipe does not work, the exhaust valve is closed, when the pressure sensor monitors that the air pressure in the hydrogen storage cave 5 drops too fast, the leakage of hydrogen in the hydrogen storage cave 5 is judged, at the moment, the annular horizontal gas collecting pipe starts to work, and the exhaust valve is opened to exhaust. The vertical drain pipes 13 are positioned outside the reinforced concrete layer 12 and vertically arranged in the guniting concrete layer 14, a plurality of vertical drain pipes 13 are uniformly distributed along the ring, and the distance between every two adjacent vertical drain pipes 13 is 1-2m; when the underground water is infiltrated into the hydrogen storage cave 5, the underground water can be discharged through the vertical drain pipe 13, and the vertical drain pipe 13 can be connected with a water pump to provide power for discharging the underground water.
The embodiment also provides an underground hydrogen storage system, which comprises a hydrogen transmission system and the underground hydrogen storage device, wherein the hydrogen transmission system comprises a vertical shaft, the bottom end of the vertical shaft is communicated with the hydrogen storage cavern 5, the top end of the vertical shaft is positioned on the ground surface and can be respectively communicated with a hydrogen production end 16 and a hydrogen transmission pipe network through a gas injection pipe 17 and a gas production pipe 18, hydrogen is transmitted from the ground hydrogen production end 16 to the hydrogen storage cavern 5 through the vertical shaft through the gas injection pipe 17 for storage, and the stored hydrogen can be transmitted to the ground hydrogen transmission pipe network through the gas production pipe 18; wherein, be provided with gas injection valve 6 on the gas injection pipe 17, be provided with gas production valve 7 on the gas production pipe 18.
In this embodiment, the shaft is a gas injection and production shaft 4, the top of the gas injection and production shaft 4 is sealed by a sealing structure, the sealing structure is provided with a gas injection interface for connecting with the gas injection pipe 17, and the sealing structure is further provided with a gas production interface for connecting with the gas production pipe 18; the sealing structure can be selected according to the working requirement, such as a sealing cover, a sealing flange and the like.
Alternatively, it is also possible to provide each hydrogen storage cavern 5 with two shafts, one for gas injection and the other for gas production.
In this embodiment, underground hydrogen storage system is still including the tunnel system that is used for supplying staff and construction vehicle equipment to pass in and out, the tunnel system is including construction ramp 1, shaft tunnel 2, cave upper portion tunnel 31 and cave lower part tunnel 32, the open-top of construction ramp 1 is located the earth's surface to import 21 as tunnel system, construction ramp 1's bottom with cave upper portion tunnel 31 and cave lower part tunnel 32 is connected, cave upper portion tunnel 31 and cave lower part tunnel 32 respectively with the upper portion and the sub-unit connection of hydrogen storage cave 5, construction ramp 1 still passes through shaft tunnel 2 with the shaft is connected.
In the embodiment, the construction slope 1 is divided into a rock cavern upper roadway 31 and a rock cavern lower roadway 32 after being excavated to a certain depth, and the rock cavern upper roadway 31 and the rock cavern lower roadway 32 are constructed simultaneously; the construction slope ramp 1, the shaft roadway 2, the rock cavern upper roadway 31 and the rock cavern lower roadway 32 are excavated based on a traditional drilling-blasting method, and vehicles must be allowed to enter, turning operation and personnel and equipment must be distributed; further, the construction slope ramp 1, the shaft tunnel 2, the rock cavern upper part tunnel 31 and the rock cavern lower part tunnel 32 all adopt horseshoe-shaped cross sections, and the cross section area is not less than 25m 2 。
In this embodiment, the underground hydrogen storage system further includes a monitoring system, the monitoring system includes a sensor assembly and a ground receiving end 9, the sensor assembly is connected with the ground receiving end 9, the sensor assembly includes a plurality of sensors 8, the sensors 8 are distributed around the outer layer of the sealing liner layer 10, and the monitoring data are transmitted to the ground receiving end 9 in real time in an optical fiber form for analysis and processing; wherein, the ground receiving end 9 can be selected according to the working requirement, such as selecting a computer, and the sensor 8 at least comprises a pressure sensor for monitoring the pressure of the hydrogen storage cavern 5, a temperature sensor for monitoring the temperature of the hydrogen storage cavern 5, and a water level sensor for monitoring the groundwater.
The monitoring system in this embodiment can monitor the pressure, temperature and the groundwater condition of underground cavern hydrogen storage system, prevents gas leakage.
In this embodiment, the hydrogen storage caverns 5 are provided with a plurality of hydrogen storage caverns 5, each hydrogen storage cavern 5 is connected with one gas injection and production shaft 4, the top of each gas injection and production shaft 4 is connected with a gas injection pipe 17 and a gas production pipe 18, and the gas injection pipe 17 and the gas production pipe 18 are respectively provided with a gas injection valve and a gas production valve.
As a preferable embodiment, four hydrogen storage caverns 5 are provided in the present embodiment, or three, five, six, or the like hydrogen storage caverns 5 may be provided according to specific work requirements.
In this embodiment, the tunnel system also can be provided with a plurality ofly, the tunnel system can with hydrogen storage cavern 5 one-to-one, or the quantity of tunnel system also can be less than the quantity of hydrogen storage cavern 5, if can set up one or two tunnel systems, be connected with all hydrogen storage caverns 5 through one or two tunnel systems, as long as guarantee all hydrogen storage caverns 5 upper portion, lower part and with the shaft that hydrogen storage cavern 5 is connected all can with tunnel system connection.
The embodiment also provides an underground hydrogen storage method, and the underground hydrogen storage system comprises the following steps:
unstable gas injection: opening the gas injection valve 6, closing the gas production valve 7, and injecting the unstable hydrogen source prepared by the hydrogen production end 16 into the hydrogen storage cavern 5 through the vertical shaft for storage;
and (3) stable gas production: and closing the gas injection valve 6, opening the gas production valve 7, and discharging the hydrogen in the hydrogen storage cavern 5 to the hydrogen transportation pipe network through the vertical shaft in a stable discharge manner.
The hydrogen production end 16 is located on the ground surface and can be selected according to working requirements, and is preferably an earth surface photovoltaic device in the embodiment, and the hydrogen is produced by electrolysis through electricity generation of the earth surface photovoltaic device; and the gas production pipe 18 can be provided with a flow meter to monitor the gas production flow, so as to realize the purpose of discharging gas with stable discharge capacity, or a gas production valve can be set as a flow valve.
In the present embodiment, when a plurality of hydrogen storage caverns 5 are provided, the unstable gas injection step of each hydrogen storage cavern 5 is performed in sequence, and the stable gas recovery step is performed simultaneously.
According to the invention, the underground cavern excavated by the traditional technology is used as a storage, an artificial lining is built in the underground cavern, unstable hydrogen sources prepared at the hydrogen production end on the earth surface are stored in a large scale, and the unstable hydrogen sources are discharged to the hydrogen transportation pipe network on the earth surface at a stable discharge capacity when needed, so that the problem of hydrogen loss caused by biochemical reaction is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An underground hydrogen storage device, comprising: the underground hydrogen storage rock cavern is used for storing hydrogen and is positioned in an underground rock stratum; be provided with sealed lining layer on the inner wall of hydrogen storage cavern, sealed lining layer includes sealed inner liner and lining layer from interior to exterior that sets gradually, sealed inner liner can be right hydrogen in the hydrogen storage cavern seals, lining layer is located sealed inner liner with between the inner wall of hydrogen storage cavern, can be right sealed inner liner is fixed.
2. The underground hydrogen storage device according to claim 1, wherein: the hydrogen storage rock cavern is positioned in an underground hard rock stratum, and the burial depth of the hydrogen storage rock cavern is below 100 meters underground.
3. The underground hydrogen storage device according to claim 1, wherein: the sealing lining layer is a steel lining layer, and the lining layer comprises a concrete sliding layer, a reinforced concrete layer and a gunite concrete layer which are sequentially arranged from inside to outside; wherein the content of the cushion gas in the hydrogen storage rock cavern is 20-30% of that of hydrogen, and the cushion gas is nitrogen.
4. An underground hydrogen storage apparatus according to claim 3, wherein: a water and gas discharging system is further arranged in the hydrogen storage cavern, the water and gas discharging system comprises an annular horizontal gas collecting pipe, a vertical water discharging pipe and a ground gas discharging pipe, the annular horizontal gas collecting pipe is arranged at the bottom and the top of the hydrogen storage cavern, and the annular horizontal gas collecting pipe is connected with the ground gas discharging pipe; the vertical drain pipe is arranged in the shotcrete layer, and the vertical drain pipe is annularly provided with a plurality of vertical drain pipes.
5. An underground hydrogen storage system, comprising: the underground hydrogen storage device comprises a hydrogen transmission system and the underground hydrogen storage device as claimed in any one of claims 1 to 4, wherein the hydrogen transmission system comprises a vertical shaft, the bottom end of the vertical shaft is communicated with the hydrogen storage cave, the top end of the vertical shaft is positioned on the ground surface and can be respectively communicated with a hydrogen production end and a hydrogen transportation pipe network through a gas injection pipe and a gas production pipe, the gas injection pipe is provided with a gas injection valve, and the gas production pipe is provided with a gas production valve.
6. The underground hydrogen storage system of claim 5, wherein: the vertical shaft is a gas injection and production vertical shaft, the top of the gas injection and production vertical shaft is sealed through a sealing structure, a gas injection interface is arranged on the sealing structure and used for being connected with a gas injection pipe, and a gas production interface is further arranged on the sealing structure and used for being connected with a gas production pipe.
7. An underground hydrogen storage system according to claim 5 or 6, characterized in that: the underground hydrogen storage system further comprises a tunnel system for workers and construction vehicle equipment to enter and exit, the tunnel system comprises a construction slope way, a shaft tunnel, a rock cavern upper portion tunnel and a rock cavern lower portion tunnel, the top end of the construction slope way is an entry of the tunnel system, the bottom end of the construction slope way is connected with the rock cavern upper portion tunnel and the rock cavern lower portion tunnel, the rock cavern upper portion tunnel and the rock cavern lower portion tunnel are respectively connected with the upper portion and the lower portion of the hydrogen storage rock cavern, the construction slope way is further connected with the shaft tunnel and the shaft is connected.
8. The underground hydrogen storage system of claim 5, wherein: the underground hydrogen storage system also comprises a monitoring system, wherein the monitoring system comprises a sensor assembly and a ground receiving end, the sensor assembly is connected with the ground receiving end, the sensor assembly comprises a plurality of sensors, and the sensors are distributed around the outer layer of the sealing lining layer; wherein the sensors at least comprise a pressure sensor for monitoring the pressure of the hydrogen storage cavern, a temperature sensor for monitoring the temperature of the hydrogen storage cavern, and a water level sensor for monitoring underground water.
9. The underground hydrogen storage system of claim 6, wherein: the hydrogen storage caverns are provided with a plurality of hydrogen storage caverns, and each hydrogen storage cavern is connected with one gas injection and production vertical shaft.
10. An underground hydrogen storage method, which is characterized in that: use of the underground hydrogen storage system according to any of claims 5-9, comprising the steps of:
unstable gas injection: opening the gas injection valve, closing the gas production valve, and injecting the unstable hydrogen source prepared by the hydrogen production end into the hydrogen storage cave through the vertical shaft for storage;
and (3) stable gas production: and closing the gas injection valve, opening the gas production valve, and discharging the hydrogen in the hydrogen storage cavern to the hydrogen transportation pipe network through the vertical shaft at a stable discharge capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211326101.9A CN115680771A (en) | 2022-10-27 | 2022-10-27 | Underground hydrogen storage device, system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877911A (en) * | 2023-08-14 | 2023-10-13 | 中国矿业大学 | Large-deformation underground energy storage device |
| CN118669699A (en) * | 2024-08-21 | 2024-09-20 | 中国石油天然气管道工程有限公司 | Underground hydrogen storage and construction method thereof |
| CN118669699B (en) * | 2024-08-21 | 2024-10-25 | 中国石油天然气管道工程有限公司 | Underground hydrogen storage and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877911A (en) * | 2023-08-14 | 2023-10-13 | 中国矿业大学 | Large-deformation underground energy storage device |
| CN116877911B (en) * | 2023-08-14 | 2024-01-30 | 中国矿业大学 | Large-deformation underground energy storage device |
| CN118669699A (en) * | 2024-08-21 | 2024-09-20 | 中国石油天然气管道工程有限公司 | Underground hydrogen storage and construction method thereof |
| CN118669699B (en) * | 2024-08-21 | 2024-10-25 | 中国石油天然气管道工程有限公司 | Underground hydrogen storage and construction method thereof |
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