CN219139138U - Underground hydrogen storage device and system - Google Patents
Underground hydrogen storage device and system Download PDFInfo
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- CN219139138U CN219139138U CN202222842019.3U CN202222842019U CN219139138U CN 219139138 U CN219139138 U CN 219139138U CN 202222842019 U CN202222842019 U CN 202222842019U CN 219139138 U CN219139138 U CN 219139138U
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 196
- 239000001257 hydrogen Substances 0.000 title claims abstract description 196
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 180
- 238000003860 storage Methods 0.000 title claims abstract description 137
- 239000011435 rock Substances 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 65
- 239000010410 layer Substances 0.000 claims description 63
- 238000004519 manufacturing process Methods 0.000 claims description 47
- 238000002347 injection Methods 0.000 claims description 36
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- 239000003673 groundwater Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000012791 sliding layer Substances 0.000 claims description 5
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
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- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
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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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses an underground hydrogen storage device, which relates to the technical field of underground hydrogen storage and comprises a hydrogen storage rock cavity, wherein the hydrogen storage rock cavity is used for storing hydrogen, and is positioned in an underground rock stratum; the inner wall of the hydrogen storage karst cave is provided with a sealing lining layer, the sealing lining layer comprises a sealing lining layer and a lining layer which are sequentially arranged from inside to outside, the sealing lining layer can seal hydrogen in the hydrogen storage karst cave, and the lining layer is located between the sealing lining layer and the inner wall of the hydrogen storage karst cave and can fix the sealing lining layer. The utility model also discloses an underground hydrogen storage system, which can reduce hydrogen loss caused by biochemical reaction, improve the volume hydrogen storage efficiency, has flexible geological conditions, is not constrained by a huge salt rock stratum, and has obvious economy and safety.
Description
Technical Field
The utility model relates to the technical field of underground hydrogen storage, in particular to an underground hydrogen storage device and an underground hydrogen storage system.
Background
The large use of fossil fuels causes excessive emissions of carbon dioxide, and the global warming caused thereby turns the problem of energy transformation into a life-vital global problem. Hydrogen is the most abundant element in nature, and has very wide source, 1m 3 The hydrogen generates 12.7 megajoules of energy by combustion, 1m 3 Methane generates 40 megajoules of heat. Although the heating value of hydrogen is low, the specific energy of hydrogen is highest among all fuels, and the final product of hydrogen after passing through a fuel cell or burning is H 2 O, no CO in the process 2 No pollution after being dischargedEmissions, and therefore hydrogen energy is considered the best clean energy source in the future, with great potential for development. The non-sustainable 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 by water electrolysis and is stably supplied after storage, so that the method is one of important schemes for relieving global warming and negative effects thereof.
However, the hydrogen energy density is low, the storage mode is always a worldwide problem, and the mass storage is more difficult. Since hydrogen is lost very much in the liquefaction process, the operation is complex and the cost is high, and compressed gaseous storage becomes the only scheme for large-scale storage of hydrogen. Compared with the above-ground storage mode, the underground storage of hydrogen has the advantages in safety, environmental protection, reserve scale and investment cost. The underground hydrogen storage can ensure 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 peak and safely and stably supplying air.
Due to obvious differences in physical and chemical characteristics of hydrogen and natural gas, the influence of hydrogen embrittlement of metal material environment, the biochemical reaction of hydrogen with microorganisms and minerals and the like, the traditional underground gas storage mode is not suitable for directly applying hydrogen.
In the scheme disclosed in the Chinese patent (CN 114059083A), hydrogen produced by solar power generation is finally injected into a waste oil and gas reservoir, the method can continuously produce the hydrogen by utilizing solar energy, but sulfide and ubiquitous microorganisms existing in the waste oil and gas reservoir can cause reduction reaction of the hydrogen, so that obvious loss of the hydrogen is caused, resources are wasted, and the purification process and equipment for producing the hydrogen can also increase the cost; in the scheme disclosed in the Chinese patent (CN 108529124A), the hydrogen is stored in the salt cavern by carrying out preparation works such as geological selection, pipe column selection, cavity air tightness detection, stability, tightness analysis and evaluation and the like, and the method can prevent the problems of hydrogen leakage, pipe column equipment hydrogen embrittlement and the like possibly occurring in the salt cavern hydrogen storage work, but the salt cavern hydrogen storage has higher requirements on geological conditions, and a huge salt dome stratum must exist to carry out the cavity dissolution operation.
Therefore, the existing underground hydrogen storage mode has the problems of serious hydrogen loss or constraint by geological conditions and the like; accordingly, there is a need to provide a new underground hydrogen storage system to solve the above-mentioned problems in the prior art.
Disclosure of Invention
The utility model aims to provide an underground hydrogen storage device and an underground hydrogen storage system, which are used for solving the problems in the prior art, reducing the hydrogen loss caused by biochemical reaction, improving the volume hydrogen storage efficiency, and realizing flexible geological conditions without being constrained by a huge salt rock stratum, and have obvious economical efficiency and safety.
In order to achieve the above object, the present utility model provides the following solutions:
the utility model provides an underground hydrogen storage device, which comprises a hydrogen storage rock cavity, wherein the hydrogen storage rock cavity is used for storing hydrogen, and is positioned in an underground rock stratum; the inner wall of the hydrogen storage karst cave is provided with a sealing lining layer, the sealing lining layer comprises a sealing lining layer and a lining layer which are sequentially arranged from inside to outside, the sealing lining layer can seal hydrogen in the hydrogen storage karst cave, and the lining layer is located between the sealing lining layer and the inner wall of the hydrogen storage karst cave and can fix the sealing lining layer.
Preferably, the hydrogen storage cavern is located in an underground hard rock formation, 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 guniting concrete layer which are sequentially arranged from inside to outside; the content of the cushion gas in the hydrogen storage rock hole is 20% -30% of hydrogen, and the cushion gas is nitrogen.
Preferably, a drainage and exhaust system is further arranged in the hydrogen storage karst cave, the drainage and exhaust system comprises an annular horizontal gas collecting pipe, a vertical drain pipe and a ground exhaust pipe, the annular horizontal gas collecting pipe is arranged at the bottom and the top of the hydrogen storage karst cave, and the annular horizontal gas collecting pipe is connected with the ground exhaust pipe; the vertical drain pipe set up in the shotcrete layer, just vertical drain pipe is provided with a plurality ofly along the annular.
The utility model 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 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 transmission pipe network through an air injection pipe and an air production pipe, the air injection pipe is provided with an air injection valve, and the air production pipe is provided with an air production valve.
Preferably, the vertical shaft is an injection and production gas vertical shaft, the top of the injection and production gas vertical shaft is sealed through a sealing structure, an air injection interface is arranged on the sealing structure and used for being connected with the air injection pipe, and an air production interface is also arranged on the sealing structure and used for being connected with the air production pipe.
Preferably, the underground hydrogen storage system further comprises a roadway system for workers and construction vehicle equipment to enter and exit, the roadway system comprises a construction ramp, a shaft roadway, a rock tunnel upper roadway and a rock tunnel lower roadway, the top end of the construction ramp is a roadway system inlet, the bottom end of the construction ramp is connected with the rock tunnel upper roadway and the rock tunnel lower roadway, the rock tunnel upper roadway and the rock tunnel lower roadway are respectively connected with the upper portion and the lower portion of the hydrogen storage rock tunnel, and the construction ramp is further connected with the shaft through the shaft roadway.
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 sealed lining layer; wherein the sensor comprises at least a pressure sensor for monitoring the pressure of the hydrogen storage rock cavity, a temperature sensor for monitoring the temperature of the hydrogen storage rock cavity and a water level sensor for monitoring groundwater.
Preferably, a plurality of hydrogen storage rock holes are arranged, and each hydrogen storage rock hole is connected with one gas injection and production vertical shaft.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model can utilize the underground rock cavern excavated by the traditional technology as the hydrogen storage rock cavern to realize large-scale hydrogen storage, and the artificially constructed seal lining layer can reduce the hydrogen loss caused by biochemical reaction as much as possible, improve the volume hydrogen storage efficiency, has low requirement on geological conditions, has obvious site selection flexibility, is not constrained by a huge thick salt rock stratum, and has obvious economy and safety.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are 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 utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an underground cave hydrogen storage system according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a seal lining layer of a hydrogen storage device for an underground cave according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a cave group structure of an underground cave hydrogen storage system according to an embodiment of the present utility model;
wherein 1 is a construction ramp, 2 is a vertical shaft roadway, 31 is a rock tunnel upper roadway, 32 is a rock tunnel lower roadway, 4 is an injection and production gas shaft, 5 is a hydrogen storage rock tunnel, 6 is an injection valve, 7 is a gas production valve, 8 is a sensor, 9 is a ground receiving end, 10 is a sealed lining layer, 11 is a concrete sliding layer, 12 is a reinforced concrete layer, 13 is a vertical drain pipe, 14 is a guniting concrete layer, 15 is an underground hard rock stratum, 16 is a hydrogen production end, 17 is an injection pipe, 18 is a gas production pipe, 19 is a top soil layer, 20 is a mud layer, and 21 is a roadway system inlet.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide an underground hydrogen storage device and an underground hydrogen storage system, which are used for solving the problems in the prior art, reducing the hydrogen loss caused by biochemical reaction, improving the volume hydrogen storage efficiency, and realizing flexible geological conditions without being constrained by a huge salt rock stratum, and have obvious economical efficiency and safety.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1-3, the present embodiment provides an underground hydrogen storage device, which includes a hydrogen storage cave 5, wherein hydrogen is stored in the hydrogen storage cave 5, the hydrogen storage cave 5 is located in an underground hard rock stratum 15, and the following geological conditions should be satisfied by the hydrogen storage cave 5: a. low-permeability compact rock mass, preventing gas from leaking in a large range through the rock stratum; b. the stratum is a hard rock stratum mainly comprising a granite layer, so that the hardness can be ensured, and the working pressure can be borne without generating cracks; c. the depth of the cave is below 100 m. The inner wall of the hydrogen storage rock hole 5 is provided with a sealing lining layer, the sealing lining layer comprises a sealing lining layer 10 and a lining layer which are sequentially arranged from inside to outside, the sealing lining layer 10 can seal hydrogen in the hydrogen storage rock hole 5, and the lining layer is positioned between the sealing lining layer 10 and the inner wall of the hydrogen storage rock hole 5 and can fix the sealing lining layer 10.
In this embodiment, the underground cave excavated by the conventional technology can be used as the hydrogen storage cave 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, improve the hydrogen storage efficiency of the volume, has low requirements on geological conditions, has obvious site selection flexibility, is not constrained by the huge salt rock stratum, and has obvious economical efficiency and safety. Further, the air tightness and stability are ensured by utilizing the artificial lining, 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 the hydrogen energy.
As a preferred embodiment, in this example, 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 gunite concrete layer 14 sequentially disposed from inside to outside; wherein,,
the steel lining layer can prevent hydrogen permeation and has a sealing effect, is made of austenitic stainless steel and is constructed 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 formed by connecting the inner wall of the hydrogen storage rock hole 5 with a steel lining layer through reinforced concrete and is reinforced through a welding net mode, and the thickness of the reinforced concrete layer 12 is not smaller than 1.5m;
the shotcrete layer 14 is poured on the rock stratum on the inner wall of the rock cavity by adopting shotcrete;
the content of the cushion gas in the hydrogen storage rock cavity 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 drainage and exhaust system is further disposed in the hydrogen storage cave 5, and the drainage and exhaust system includes an annular horizontal gas collecting pipe, a vertical drain pipe 13 and a ground exhaust pipe; specifically, the bottom and the top of the hydrogen storage karst cave 5 are both provided with the annular horizontal gas collecting pipe, the annular horizontal gas collecting pipe is connected with the ground exhaust pipe, and the ground exhaust pipe can be provided with an exhaust valve; wherein, a plurality of gas collecting ports are arranged on the annular horizontal gas collecting tube for collecting gas; when the hydrogen storage rock hole 5 is in a normal working state, the annular horizontal gas collecting tube does not work, the exhaust valve is closed, and when the pressure sensor monitors that the air pressure in the hydrogen storage rock hole 5 is too fast to drop, the hydrogen leakage in the hydrogen storage rock hole 5 is judged, and at the moment, the annular horizontal gas collecting tube starts to work, and the exhaust valve is opened to exhaust. The vertical drain pipes 13 are positioned outside the reinforced concrete layer 12, are vertically arranged in the shotcrete layer 14, and are uniformly distributed along the ring shape, and the interval between every two adjacent vertical drain pipes 13 is 1-2m; when groundwater is permeated into the hydrogen storage karst cave 5, the groundwater 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 the discharge of the groundwater.
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 cave 5, the top end of the vertical shaft is positioned on the ground surface and can be respectively communicated with the hydrogen production end 16 and a hydrogen transmission pipe network through an air injection pipe 17 and an air production pipe 18, hydrogen is transmitted from the ground hydrogen production end 16 to the hydrogen storage cave 5 through the vertical shaft through the air injection pipe 17 to be stored, and the stored hydrogen can be transmitted to the ground hydrogen transmission pipe network through the air production pipe 18; wherein, the gas injection pipe 17 is provided with a gas injection valve 6, and the gas production pipe 18 is provided with a gas production valve 7.
In this embodiment, the vertical shaft is an injection and production gas vertical shaft 4, the top of the injection and production gas vertical shaft 4 is sealed by a sealing structure, an air injection interface is arranged on the sealing structure and is used for being connected with the air injection pipe 17, and an air production interface is also arranged on the sealing structure and is used for being connected with the air 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 that each hydrogen storage cavern 5 is connected to two shafts, one for gas injection and the other for gas production.
In this embodiment, the underground hydrogen storage system further includes a tunnel system for the entry and exit of workers and construction vehicle equipment, the tunnel system includes a construction ramp 1, a shaft tunnel 2, a cave upper tunnel 31 and a cave lower tunnel 32, the top opening of the construction ramp 1 is located on the earth surface and serves as a tunnel system inlet 21, the bottom end of the construction ramp 1 is connected with the cave upper tunnel 31 and the cave lower tunnel 32, the cave upper tunnel 31 and the cave lower tunnel 32 are respectively connected with the upper portion and the lower portion of the hydrogen storage cave 5, and the construction ramp 1 is also connected with the shaft through the shaft tunnel 2.
In the embodiment, the construction ramp 1 is divided into a rock tunnel upper roadway 31 and a rock tunnel lower roadway 32 after being excavated to a certain depth, and the rock tunnel upper roadway 31 and the rock tunnel lower roadway 32 are constructed simultaneously; wherein, the construction ramp 1, the vertical shaft roadway 2, the rock tunnel upper roadway 31 and the rock tunnel lower roadway 32 are all excavated based on the traditional drilling-blasting method, and vehicles must be allowed to enter, turn and collect and distribute personnel and equipment; further, the construction ramp 1, the vertical shaft tunnel 2, the rock tunnel upper tunnel 31 and the rock tunnel lower 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 sealed inner liner 10, and monitoring data is transmitted to the ground receiving end 9 in real time through an optical fiber form for analysis; the ground receiving end 9 may be selected according to working requirements, such as selecting a computer, etc., and the sensor 8 at least includes a pressure sensor for monitoring the pressure of the hydrogen storage cave 5, a temperature sensor for monitoring the temperature of the hydrogen storage cave 5, and a water level sensor for monitoring groundwater.
The monitoring system in the embodiment can monitor the pressure, the temperature and the groundwater condition of the underground cave hydrogen storage system, and prevent gas leakage.
In this embodiment, the hydrogen storage caverns 5 are provided in plurality, 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 preferred 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 working requirements.
In this embodiment, a plurality of roadway systems may be provided, where the roadway systems may correspond to the hydrogen storage holes 5 one by one, or the number of roadway systems may be less than the number of the hydrogen storage holes 5, for example, one or two roadway systems may be provided, and the roadway systems may be connected to all the hydrogen storage holes 5 through one or two roadway systems, so long as it is ensured that all the upper portions and lower portions of the hydrogen storage holes 5 and shafts connected to the hydrogen storage holes 5 may be connected to the roadway systems.
The embodiment 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 6, closing the gas production valve 7, and injecting an unstable hydrogen source prepared by the hydrogen production end 16 into the hydrogen storage rock cavity 5 through the vertical shaft for storage;
stable gas production: and closing the gas injection valve 6, opening the gas production valve 7, and discharging the hydrogen in the hydrogen storage rock cavity 5 to the hydrogen conveying pipe network through the vertical shaft in a stable discharge capacity.
The hydrogen producing end 16 is located on the ground surface and can be selected according to the working requirement, and in the embodiment, a ground surface photovoltaic device is preferred, and the electricity is generated through the ground surface photovoltaic device to produce hydrogen by electrolysis; and the gas production pipe 18 can be provided with a flowmeter for monitoring the gas production flow so as to realize stable discharge of gas, or the gas production pipe 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 sequentially performed, and the stable gas production steps are simultaneously performed.
According to the utility model, the underground cave excavated by the traditional technology is used as a reservoir, the artificial lining is built in the underground cave, the unstable hydrogen source prepared by the surface hydrogen production end is stored in a large scale, and is discharged to the surface hydrogen delivery pipe network in a stable discharge amount when needed, so that the problem of hydrogen loss caused by biochemical reaction is avoided.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (8)
1. An underground hydrogen storage device, characterized in that: the system comprises a hydrogen storage rock cavity, wherein the hydrogen storage rock cavity is used for storing hydrogen, and is positioned in a subterranean rock stratum; the inner wall of the hydrogen storage rock hole is provided with a sealing lining layer, the sealing lining layer comprises a sealing lining layer and a lining layer which are sequentially arranged from inside to outside, the sealing lining layer can seal hydrogen in the hydrogen storage rock hole, and the lining layer is positioned between the sealing lining layer and the inner wall of the hydrogen storage rock hole and can fix the sealing lining layer;
the sealing lining layer is a steel lining layer, and the lining layer comprises a concrete sliding layer, a reinforced concrete layer and a guniting concrete layer which are sequentially arranged from inside to outside; the content of the cushion gas in the hydrogen storage rock hole is 20% -30% of hydrogen, and the cushion gas is nitrogen.
2. The underground hydrogen storage device of 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 of claim 1, wherein: the hydrogen storage karst cave is internally provided with a drainage and exhaust system which comprises an annular horizontal gas collecting pipe, a vertical drain pipe and a ground exhaust pipe, wherein the annular horizontal gas collecting pipe is arranged at the bottom and the top of the hydrogen storage karst cave, and the annular horizontal gas collecting pipe is connected with the ground exhaust pipe; the vertical drain pipe set up in the shotcrete layer, just vertical drain pipe is provided with a plurality ofly along the annular.
4. An underground hydrogen storage system, characterized by: the underground hydrogen storage device comprises a hydrogen transmission system and any one of claims 1-3, 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 communicated with a hydrogen production end and a hydrogen transportation pipe network through an air injection pipe and a gas production pipe respectively, an air injection valve is arranged on the air injection pipe, and a gas production valve is arranged on the gas production pipe.
5. The underground hydrogen storage system of claim 4, wherein: the vertical shaft is an injection and production gas vertical shaft, the top of the injection and production gas vertical shaft is sealed through a sealing structure, an air injection interface is arranged on the sealing structure and used for being connected with an air injection pipe, and an air production interface is also arranged on the sealing structure and used for being connected with the air production pipe.
6. The underground hydrogen storage system of claim 4 or 5, wherein: 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 ramp, a shaft tunnel, a rock tunnel upper tunnel and a rock tunnel lower tunnel, the top end of the construction ramp is a tunnel system inlet, the bottom end of the construction ramp is connected with the rock tunnel upper tunnel and the rock tunnel lower tunnel, the rock tunnel upper tunnel and the rock tunnel lower tunnel are respectively connected with the upper portion and the lower portion of the hydrogen storage rock tunnel, and the construction ramp is further connected with the shaft through the shaft tunnel.
7. The underground hydrogen storage system of claim 4, wherein: 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 sealed inner liner; wherein the sensor comprises at least a pressure sensor for monitoring the pressure of the hydrogen storage rock cavity, a temperature sensor for monitoring the temperature of the hydrogen storage rock cavity and a water level sensor for monitoring groundwater.
8. The underground hydrogen storage system of claim 5, wherein: the hydrogen storage karst cave is provided with a plurality of, every hydrogen storage karst cave all is connected with one annotate and adopt the gas shaft.
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| CN202222842019.3U CN219139138U (en) | 2022-10-27 | 2022-10-27 | Underground hydrogen storage device and system |
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| CN202222842019.3U CN219139138U (en) | 2022-10-27 | 2022-10-27 | Underground hydrogen storage device and system |
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