A cavern hydrogen storage device and method

Abstract

This invention provides a cavern hydrogen storage device and method. The cavern hydrogen storage device includes a fixing component, a hydrogen delivery pipeline, several hydrogen storage components, a support component, and a control component. One end of the fixing component is fixed to the top of the cavern, and the other end is connected to the hydrogen delivery pipeline to secure the pipeline to the cavern top, facilitating hydrogen storage. Several hydrogen storage components are spaced apart on the hydrogen delivery pipeline to form independent hydrogen storage units. One end of the support component is fixed to the top of the cavern, and the other end is fixedly connected to the hydrogen storage components to support and secure them. The control component is communicatively connected to the hydrogen storage components to transmit signals and control the storage / release of hydrogen. The cavern hydrogen storage device provided by this invention simplifies construction steps, reduces construction costs, and improves hydrogen storage safety through simple connections, providing a practical basis for large-scale hydrogen storage in caverns.

Description

Technical Field

[0001] This invention belongs to the field of cave hydrogen storage technology, and specifically relates to a cave hydrogen storage device and method. Background Technology

[0002] With the acceleration of the global energy transition, hydrogen energy, as a clean and efficient energy form, is ushering in unprecedented development opportunities. Currently, hydrogen energy demonstrates enormous application potential in multiple fields such as transportation, industry, and construction, and global market demand for hydrogen energy continues to grow. However, the large-scale application of hydrogen energy still faces many challenges, among which the need for hydrogen storage technology is particularly urgent. Efficient hydrogen storage technology will be key to promoting the further development of the hydrogen energy industry.

[0003] my country possesses a large number of abandoned mines and tunnels, as well as abandoned rock caverns. Utilizing these abandoned rock caverns for hydrogen storage not only enables large-scale hydrogen storage but also allows for the resource utilization of abandoned underground spaces. Hydrogen has the characteristic of being a small molecule with strong permeability; therefore, storing hydrogen in abandoned rock caverns requires ensuring the airtightness of the surrounding rock. However, abandoned mine tunnels and abandoned tunnels pass through various types of rock, including small faults, resulting in complex surrounding rock types. During the original construction process, mining activities caused damage to some of the surrounding rock, creating fissures. Some of these fissures may even connect with fissures in the original rock and extend to the surface. Furthermore, the concrete linings used during construction will naturally oxidize, deform, and detach after prolonged abandonment. All of these factors contribute to a large number of fissures in abandoned mine tunnels and other abandoned rock caverns, thus affecting hydrogen storage.

[0004] Currently, both domestically and internationally, the common practice is to construct lining structures inside the caverns to improve the airtightness of hydrogen storage facilities. These lining structures are typically composed of materials such as concrete and stainless steel. Some hydrogen storage facilities also have a layer of polymer material laid on the innermost side of the lining structure to ensure that hydrogen does not leak. However, abandoned mine tunnels and other abandoned caverns have complex structures and can stretch for tens of kilometers. Laying lining structures on all their inner sides increases construction costs and operation and maintenance expenses, making it difficult to apply on a large scale.

[0005] It is evident that how to provide a cavern hydrogen storage device that achieves large-scale hydrogen storage through a simple structure and reduces construction costs is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a cavern hydrogen storage device and method to at least solve one of the above-mentioned technical problems.

[0007] To achieve the above objectives, a first aspect of the present invention provides a cavern hydrogen storage device, the device comprising: a fixing component, one end of which is fixed to the top of the cavern; a hydrogen delivery pipeline connected to the other end of the fixing component; a plurality of hydrogen storage components spaced apart on the hydrogen delivery pipeline; a support component, one end of which is fixed to the top of the cavern, and the other end of which is fixedly connected to each of the hydrogen storage components; and a control component communicatively connected to each of the hydrogen storage components.

[0008] In the first aspect, each of the hydrogen storage components includes: a storage-release controller, one end of which is connected to the hydrogen delivery pipeline, the outer wall of which is fixedly connected to the other end of the support component, and the storage-release controller is communicatively connected to the control component; and a flexible lining, which is detachably connected to the other end of the storage-release controller for storing hydrogen.

[0009] In the first aspect, the hydrogen storage device further includes a plurality of hydrogen monitoring probes, each of which is disposed above a corresponding storage and release controller and fixed to the top of the cavern; each of the hydrogen monitoring probes is communicatively connected to the control component.

[0010] In the first aspect, the support assembly includes a plurality of support rods, one end of each support rod being fixed to the top of the cavern and located outside a corresponding hydrogen monitoring probe; the other end of each support rod is fixedly connected to the outer wall of the storage and release controller.

[0011] In the first aspect, the fixing assembly includes a plurality of fixing brackets, one end of each fixing bracket is fixed to the top of the cave and located outside a corresponding support rod; the other end of each fixing bracket is fixedly connected to the hydrogen transmission pipeline, and the plurality of fixing brackets are spaced apart on the hydrogen transmission pipeline.

[0012] In the first aspect, the control component includes: a plurality of downhole wireless network routers, each of the downhole wireless network routers being communicatively connected to a corresponding hydrogen monitoring probe, and each of the downhole wireless network routers being communicatively connected to a corresponding storage and release controller; an optical cable, the optical cable being disposed on one side of the bottom of the cavern and electrically connected to the downhole wireless network routers; and a central controller, the central controller being electrically connected to the optical cable.

[0013] In the first aspect, the hydrogen storage device further includes a drainage pipe disposed on the other side of the bottom of the cave; the hydrogen storage device also includes a ventilation fan for facilitating air circulation within the cave.

[0014] In the first aspect, the hydrogen storage device further includes: a hydrogen delivery valve, which is disposed at one end of the hydrogen delivery pipeline and connected to an external hydrogen storage device; and a venting flare, which is connected to the other end of the hydrogen delivery pipeline.

[0015] In the first aspect, the hydrogen transport pipeline includes a hydrogen injection pipeline and a hydrogen collection pipeline; the hydrogen injection pipeline and the hydrogen collection pipeline are independent of each other and are suspended and fixed to the top of the cave.

[0016] A second aspect of this invention provides a method for hydrogen storage in a cavern, the method comprising: installing and connecting the hydrogen storage device described in the first aspect within a cavern; venting the air from the hydrogen injection pipeline, the hydrogen extraction pipeline, and the flexible lining; connecting an external hydrogen storage device to one end of the hydrogen injection pipeline and the hydrogen extraction pipeline respectively via a hydrogen delivery valve; during hydrogen storage, a central controller transmits a signal to the downhole wireless network router via an optical cable, causing the corresponding storage-release controller to start working, and supplying hydrogen to the flexible lining through the hydrogen injection pipeline; during hydrogen extraction, the central controller transmits a signal to the downhole wireless network router via an optical cable, causing the corresponding storage-release controller to start working, and supplying hydrogen to the flexible lining through the hydrogen injection pipeline; during hydrogen extraction, the central controller transmits a signal to the downhole wireless network router via an optical cable, causing the corresponding storage-release controller to start working, and supplying hydrogen to the flexible lining through the hydrogen extraction pipeline. Hydrogen is supplied to the external hydrogen storage device through the hydrogen collection pipeline; the central controller transmits signals to the underground wireless network router via optical cable, enabling the hydrogen monitoring probe to continuously monitor the hydrogen concentration in the cavern and determine whether a hydrogen leak has occurred in the cavern based on the hydrogen concentration; when a hydrogen leak occurs, the location of the hydrogen leak is located based on the monitoring data of the hydrogen monitoring probe, and the central controller controls the corresponding storage and release controller to open the corresponding flexible lining to supply hydrogen to the hydrogen injection pipeline or the hydrogen collection pipeline to the venting torch for combustion and venting; after combustion and venting are completed, the hydrogen leak location is repaired, and the cavern hydrogen storage device continues to operate.

[0017] Beneficial effects:

[0018] This invention provides a cavern hydrogen storage device, comprising a fixing component, a hydrogen delivery pipeline, several hydrogen storage components, a support component, and a control component. One end of the fixing component is fixed to the top of the cavern, and the other end is connected to the hydrogen delivery pipeline to secure the pipeline to the cavern top, facilitating hydrogen storage. Several hydrogen storage components are spaced apart on the hydrogen delivery pipeline to form independent hydrogen storage units. One end of the support component is fixed to the top of the cavern, and the other end is fixedly connected to the hydrogen storage components to support and secure them. The control component is communicatively connected to the hydrogen storage components to transmit signals and control the storage / release of hydrogen. This invention simplifies construction steps through simple connections, improves hydrogen storage safety, provides a practical basis for large-scale hydrogen storage in caverns, and reduces costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the cave hydrogen storage device provided in this invention before hydrogen storage. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the cave hydrogen storage device provided in this invention before hydrogen storage. Figure 2 ;

[0022] Figure 3 A schematic diagram of the hydrogen storage device in the cave provided in this invention after hydrogen storage. Figure 1 ;

[0023] Figure 4 A schematic diagram of the hydrogen storage device in the cave provided in this invention after hydrogen storage. Figure 2 ;

[0024] Figure label:

[0025] 1. Fixing component; 11. First fixing bracket; 12. Second fixing bracket;

[0026] 2. Hydrogen transmission pipeline; 21. Hydrogen injection pipeline; 22. Hydrogen collection pipeline;

[0027] 3. Hydrogen storage components; 31. Storage and release controller; 32. Flexible lining; 33. Clamps;

[0028] 4. Support assembly; 41. First support rod; 42. Second support rod;

[0029] 5. Control components; 51. Downhole wireless network router; 52. Fiber optic cable; 53. Central controller;

[0030] 6. Hydrogen monitoring probe;

[0031] 7. Drainage pipes;

[0032] 8. Hydrogen delivery valve;

[0033] 9. Release the torches into the air;

[0034] 10. External hydrogen storage equipment. Detailed Implementation

[0035] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0036] Furthermore, in the embodiments of this specification, when a component is described as "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0038] Please see Figure 1-4 This invention provides a hydrogen storage device for a cavern, comprising: a fixing component 1, one end of which is fixed to the top of the cavern; a hydrogen delivery pipeline 2, connected to the other end of the fixing component 1; a plurality of hydrogen storage components 3, which are spaced apart on the hydrogen delivery pipeline 2; a support component 4, one end of which is fixed to the top of the cavern, and the other end of which is fixedly connected to each of the hydrogen storage components 3; and a control component 5, which is communicatively connected to each of the hydrogen storage components 3.

[0039] Specifically, the present invention provides a cavern hydrogen storage device, comprising a fixing component 1, a hydrogen delivery pipeline 2, several hydrogen storage components 3, a support component 4, and a control component 5. One end of the fixing component 1 is fixed to the top of the cavern, and the other end of the fixing component 1 is connected to the hydrogen delivery pipeline 2 to fix the hydrogen delivery pipeline 2 to the top of the cavern for easy hydrogen storage. Several hydrogen storage components 3 are spaced apart on the hydrogen delivery pipeline 2 to form independent hydrogen storage units. One end of the support component 4 is fixed to the top of the cavern, and the other end of the support component 4 is fixedly connected to the hydrogen storage components 3 to support and fix the hydrogen storage components 3. The control component 5 is communicatively connected to the hydrogen storage components 3 to transmit signals to the hydrogen storage components 3 and control the hydrogen storage components 3 to store / release hydrogen. The cavern hydrogen storage device provided by the present invention simplifies the construction steps through simple connection relationships, improves the safety of hydrogen storage, provides a practical basis for large-scale hydrogen storage in caverns, and reduces costs.

[0040] In some possible implementations, each of the hydrogen storage components 3 includes: a storage-release controller 31, one end of which is connected to the hydrogen delivery pipeline 2, the outer wall of which is fixedly connected to the other end of the support component 4, and the storage-release controller 31 is communicatively connected to the control component 5; and a flexible liner 32, which is detachably connected to the other end of the storage-release controller 31 for storing hydrogen.

[0041] Those skilled in the art will understand that each hydrogen storage component 3 includes a storage-release controller 31 and a flexible liner 32. One end of the storage-release controller 31 is connected to the hydrogen transmission pipeline 2, and the other end of the storage-release controller 31 is detachably connected to the flexible liner 32. The storage-release controller 31 is communicatively connected to the control component 5, and hydrogen transportation between the hydrogen transmission pipeline 2 and the flexible liner 32 is realized through the storage-release controller 31. When the flexible liner 32 is damaged, the flexible liner 32 can be quickly replaced through the detachable structure to continue hydrogen storage. In addition, the detachable structure can be a clamp 33, which is set at the opening of the flexible liner 32 to press it against the outside of the storage-release controller 31 to improve the sealing between the storage-release controller 31 and the flexible liner 32. The flexible liner 32 has strong deformation capacity, extremely low hydrogen permeability, and does not react with hydrogen.

[0042] In some possible implementations, the hydrogen storage device further includes a plurality of hydrogen monitoring probes 6, each of which is positioned above a corresponding storage and release controller 31 and fixed to the top of the cavern; each of the hydrogen monitoring probes 6 is communicatively connected to the control component 5.

[0043] In order to monitor the hydrogen concentration inside the cave, several hydrogen monitoring probes 6 are installed at the top of the cave. Each hydrogen monitoring probe 6 is positioned above a corresponding storage and release controller 31. Each hydrogen monitoring probe 6 is connected to the control component 5 to monitor the hydrogen concentration inside the cave and transmit the collected data to the control component 5. The analysis is then used to determine whether a hydrogen leak has occurred and the location of the leak.

[0044] In some possible implementations, the support assembly 4 includes a plurality of support rods, one end of each support rod being fixed to the top of the cavern and located outside a corresponding hydrogen monitoring probe 6; the other end of each support rod is fixedly connected to the outer wall of the storage and release controller 31.

[0045] Those skilled in the art will understand that the support assembly 4 includes several support rods. One end of each support rod is fixed to the top of the cavern and located outside a corresponding hydrogen monitoring probe 6. The other end of each support rod is fixedly connected to the outer wall of the storage and release controller 31 to fix the storage and release controller 31. Each support rod includes a first support rod 41 and a second support rod 42. One end of the first support rod 41 is fixed to the top of the cavern, and the other end of the first support rod 41 is fixedly connected to the outer wall of the storage and release controller 31. The first support rod 41 and the second support rod 42 together form an accommodating space. The hydrogen monitoring probe 6 is placed in the accommodating space, and the edge of the accommodating space is fixedly connected to the outer wall of the storage and release controller 31.

[0046] In some possible implementations, the fixing component 1 includes a plurality of fixing brackets, one end of each fixing bracket being fixed to the top of the cave and located outside a corresponding support rod; the other end of each fixing bracket being fixedly connected to the hydrogen transmission pipeline 2, and the plurality of fixing brackets being spaced apart on the hydrogen transmission pipeline 2.

[0047] To improve the stability of the hydrogen pipeline 2 and to conform to the characteristics of hydrogen, the fixing assembly 1 includes several fixing brackets. One end of each fixing bracket is fixed to the top of the cave, and the other end of each fixing bracket is fixedly connected to the hydrogen pipeline 2. The fixing brackets are spaced apart on the hydrogen pipeline 2 and located outside a corresponding support rod. The hydrogen pipeline 2 is suspended above the cave by the fixing brackets. Each fixing bracket includes a first fixing bracket 11 and a second fixing bracket 12. The first fixing bracket 11 and the second fixing bracket 12 together form an accommodating space, and each support rod is located within a corresponding accommodating space.

[0048] In some possible implementations, the control component 5 includes: a plurality of downhole wireless network routers 51, each downhole wireless network router 51 being communicatively connected to a corresponding hydrogen monitoring probe 6, and each downhole wireless network router 51 being communicatively connected to a corresponding storage and release controller 31; an optical fiber cable 52, the optical fiber cable 52 being disposed on one side of the bottom of the cavern and electrically connected to the downhole wireless network routers 51; and a central controller 53, the central controller 53 being electrically connected to the optical fiber cable 52.

[0049] Those skilled in the art will understand that the control component 5 includes several downhole wireless network routers 51, optical cables 52, and a central controller 53. Each downhole wireless network router 51 is not only communicatively connected to a corresponding hydrogen monitoring probe 6, but also to a corresponding storage and release controller 31. Signals are collected or sent to the hydrogen monitoring probe 6 and the storage and release controller 31 through the downhole wireless network router 51. The optical cable 52 is located on one side of the bottom of the cavern, and the several downhole wireless network routers 51 are spaced apart and electrically connected to the optical cable 52 to improve the signal transmission rate in the cavern. Furthermore, the central controller 53 is electrically connected to the optical cable 52. Control signals are sent to the storage and release controller 31 and the hydrogen monitoring probe 6 through the central controller 53 to trigger the monitoring command for hydrogen concentration in the cavern and the command for storing / releasing hydrogen. The feedback signals collected by the hydrogen monitoring probe 6 and the storage and release controller 31 are transmitted to the central controller 53 through the corresponding downhole wireless network routers and optical cables 52, thereby analyzing the hydrogen concentration and hydrogen storage status in the cavern.

[0050] In some possible implementations, the hydrogen storage device further includes: a drainage pipe 7 disposed on the other side of the bottom of the cave; and a ventilation fan for facilitating air circulation within the cave.

[0051] To prevent the optical cable 52 from being affected by water, a drainage pipe 7 is installed on the other side of the bottom of the cave to collect and treat the water in the cave. In addition, a ventilation fan is installed in the cave to ensure air circulation. This not only prevents the accumulation of leaked hydrogen gas from causing an explosion, but also provides sufficient oxygen for the workers underground.

[0052] In some possible implementations, the hydrogen storage device further includes: a hydrogen delivery valve 8, which is disposed at one end of the hydrogen delivery pipeline 2 and connected to an external hydrogen storage device 10; and a venting torch 9, which is connected to the other end of the hydrogen delivery pipeline 2.

[0053] To further improve the safety of hydrogen storage in the cavern, a hydrogen transfer valve 8 is installed at one end of the hydrogen transfer pipeline 2. The hydrogen in the flexible lining 32 is transported to the external hydrogen storage device 10 for use through the hydrogen transfer valve 8, or the hydrogen in the external hydrogen storage device 10 is transported into the flexible lining 32 for storage. The external hydrogen storage device 10 can be a hydrogen storage tanker, a hydrogen production station, etc. A venting flare 9 is installed at the other end of the hydrogen transfer pipeline 2. When the concentration of hydrogen in the cavern reaches the safety limit, the hydrogen in the flexible lining 32 is transferred to the venting flare 9 for combustion and venting through the central controller 53, thereby improving the safety of hydrogen storage.

[0054] In some possible implementations, the hydrogen pipeline 2 includes a hydrogen injection pipeline 21 and a hydrogen collection pipeline 22; the hydrogen injection pipeline 21 and the hydrogen collection pipeline 22 are independent of each other and are suspended and fixed to the top of the cave.

[0055] Those skilled in the art will understand that the hydrogen transmission pipeline 2 includes a hydrogen injection pipeline 21 and a hydrogen collection pipeline 22. The hydrogen injection pipeline 21 and the hydrogen collection pipeline 22 are independent of each other and are suspended and fixed to the top of the cave. Several hydrogen storage components 3 are respectively installed on the hydrogen injection pipeline 21 and the hydrogen collection pipeline 22 and fixed by the support component 4 and the fixing component 1, so as to realize the simultaneous injection and collection of hydrogen by different hydrogen storage components 3, thereby improving the operating efficiency of the hydrogen storage device.

[0056] Example 2

[0057] This invention provides a method for hydrogen storage in caverns, the method comprising:

[0058] The hydrogen storage device for the cavern described in the first aspect shall be installed and connected inside the cavern.

[0059] Expel the air from the hydrogen injection pipeline 21, the hydrogen collection pipeline 22 and the flexible lining 32, and connect the external hydrogen storage device 10 to one end of the hydrogen injection pipeline 21 and the hydrogen collection pipeline 22 respectively through the hydrogen transfer valve 8.

[0060] During hydrogen storage, the central controller 53 transmits a signal to the downhole wireless network router 51 via the optical cable 52, causing the corresponding storage and release controller 31 to start working and deliver hydrogen into the flexible lining 32 through the hydrogen injection pipeline 21.

[0061] During hydrogen extraction, the central controller 53 transmits a signal to the downhole wireless network router 51 via the optical cable 52, causing the corresponding storage and release controller 31 to start working, and the hydrogen in the flexible lining 32 is transported to the external hydrogen storage device 10 through the hydrogen extraction pipeline 22.

[0062] The central controller 53 transmits a signal to the underground wireless network router 51 via the optical cable 52, so that the hydrogen monitoring probe 6 continuously monitors the hydrogen concentration in the cavern and determines whether a hydrogen leak has occurred in the cavern based on the hydrogen concentration.

[0063] When a hydrogen leak occurs, the location of the hydrogen leak is located based on the monitoring data of the hydrogen monitoring probe 6, and the corresponding storage and release controller 31 is controlled by the central controller 53 to open the corresponding flexible lining 32 to deliver hydrogen to the hydrogen injection pipeline 21 or the hydrogen collection pipeline 22 to the venting torch 9 for combustion and venting. After the combustion and venting are completed, the location of the hydrogen leak is repaired, and the cavern hydrogen storage device continues to operate.

[0064] Specifically, this invention provides a method for hydrogen storage in a cavern. The method involves installing and connecting a hydrogen storage device according to the first aspect within a cavern, venting air from the hydrogen injection pipe 21, hydrogen collection pipe 22, and flexible lining 32, and connecting an external hydrogen storage device 10 to one end of the hydrogen injection pipe 21 and hydrogen collection pipe 22 via a hydrogen delivery valve 8 to complete preliminary preparations. During hydrogen storage, the central controller 53 is activated, transmitting a signal to the downhole wireless network router 51 via an optical cable 52, causing the corresponding storage-release controller 31 to start operating and supplying hydrogen into the flexible lining 32 through the hydrogen injection pipe 21. During hydrogen collection, the central controller 53 transmits a signal to the downhole wireless network router 51 via an optical cable 52, causing the corresponding storage-release controller 31 to start operating and supplying hydrogen into the flexible lining 32. Hydrogen is supplied to the external hydrogen storage device 10 via the hydrogen collection pipeline 22. Furthermore, to improve the safety of the cavern hydrogen storage device, during the entire operation of the cavern hydrogen storage device, the central controller 53 transmits signals to the underground wireless network router 51 via the optical cable 52, enabling the hydrogen monitoring probe 6 to continuously monitor the hydrogen concentration inside the cavern and determine whether a hydrogen leak has occurred based on the hydrogen concentration. When a hydrogen leak occurs, the monitoring data from the hydrogen monitoring probe 6 accurately locates the leak location, and the central controller 53 activates the corresponding storage and release controller 31 to open the corresponding flexible lining 32 to supply hydrogen to the hydrogen injection pipeline 21 or the hydrogen collection pipeline 22 to the venting torch 9 for combustion and venting. After combustion and venting, the hydrogen leak location is repaired, allowing the cavern hydrogen storage device to operate normally. In this invention, the hydrogen injection pipeline 21 and hydrogen collection pipeline 22, located at the top of the cavern, are independent of each other and combined with various independently operable hydrogen storage components. This allows different hydrogen storage components to simultaneously inject and collect hydrogen under the scheduling of the central controller, achieving flexible peak-shaving capabilities and improving the operating efficiency of the cavern hydrogen storage device.

[0065] Since Embodiment 2 and Embodiment 1 are embodiments under the same inventive concept and have some identical structures, the structures in Embodiment 2 that are substantially the same as those in Embodiment 1 will not be described in detail. For the parts not described in detail, please refer to Embodiment 1.

[0066] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0067] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A cavern hydrogen storage device, characterized in that, The hydrogen storage device includes: A fixing component, one end of which is fixed to the top of the cave. A hydrogen delivery pipeline, wherein the hydrogen delivery pipeline is connected to the other end of the fixed assembly; A plurality of hydrogen storage components are arranged at intervals on the hydrogen transmission pipeline; A support assembly, one end of which is fixed to the top of the cavern, and the other end of which is fixedly connected to each of the hydrogen storage assemblies; A control component, which is communicatively connected to each of the hydrogen storage components; Each of the hydrogen storage components includes: A storage and release controller, one end of which is connected to the hydrogen transport pipeline, the outer wall of which is fixedly connected to the other end of the support assembly, and the storage and release controller is communicatively connected to the control assembly; A flexible liner, which is detachably connected to the other end of the storage and release controller, is used to store hydrogen. The hydrogen storage device also includes several hydrogen monitoring probes, each of which is positioned above a corresponding storage and release controller and fixed to the top of the cavern; each of the hydrogen monitoring probes is communicatively connected to the control component. The control component includes: A plurality of downhole wireless network routes, each of the downhole wireless network routes being communicatively connected to a corresponding hydrogen monitoring probe, and each of the downhole wireless network routes being communicatively connected to a corresponding storage and release controller; An optical fiber cable is installed on one side of the bottom of the cavern and electrically connected to the underground wireless network router. A central controller, which is electrically connected to the optical cable.

2. The cavern hydrogen storage device according to claim 1, characterized in that, The support assembly includes several support rods, one end of each support rod is fixed to the top of the cavern and located outside a corresponding hydrogen monitoring probe; the other end of each support rod is fixedly connected to the outer wall of the storage and release controller.

3. The cavern hydrogen storage device according to claim 2, characterized in that, The fixing assembly includes several fixing brackets, one end of each fixing bracket is fixed to the top of the cave and located outside a corresponding support rod; the other end of each fixing bracket is fixedly connected to the hydrogen transmission pipeline, and the several fixing brackets are distributed at intervals on the hydrogen transmission pipeline.

4. The cavern hydrogen storage device according to claim 3, characterized in that, The hydrogen storage device also includes: A drainage pipe is located on the other side of the bottom of the cave. A ventilation fan is used to circulate air within the cave.

5. The cavern hydrogen storage device according to claim 4, characterized in that, The hydrogen storage device also includes: A hydrogen delivery valve is installed at one end of the hydrogen delivery pipeline and connected to an external hydrogen storage device. A venting flare is provided, which is connected to the other end of the hydrogen pipeline.

6. The cavern hydrogen storage device according to claim 5, characterized in that, The hydrogen pipeline includes a hydrogen injection pipeline and a hydrogen collection pipeline; the hydrogen injection pipeline and the hydrogen collection pipeline are independent of each other and are suspended and fixed to the top of the cave.

7. A method for storing hydrogen in caverns, characterized in that, The method includes: The hydrogen storage device for the cavern as described in claim 6 is installed and connected inside the cavern. Expel the air from the hydrogen injection pipeline, hydrogen collection pipeline, and flexible lining, and connect the external hydrogen storage equipment to one end of the hydrogen injection pipeline and the hydrogen collection pipeline respectively through the hydrogen transfer valve; During hydrogen storage, the central controller transmits a signal to the downhole wireless network route via an optical cable, which causes the corresponding storage and release controller to start working and deliver hydrogen into the flexible lining through the hydrogen injection pipeline. During hydrogen extraction, the central controller transmits a signal to the downhole wireless network router via an optical cable, which causes the corresponding storage and release controller to start working, and the hydrogen in the flexible lining is transported to the external hydrogen storage equipment through the hydrogen extraction pipeline. The central controller transmits signals to the underground wireless network router via optical cable, enabling the hydrogen monitoring probe to continuously monitor the hydrogen concentration in the cavern and determine whether a hydrogen leak has occurred in the cavern based on the hydrogen concentration. When a hydrogen leak occurs, the location of the leak is determined based on the monitoring data from the hydrogen monitoring probe. The central controller then controls the corresponding storage and release controller to open the corresponding flexible lining and deliver hydrogen to the hydrogen injection pipeline or the hydrogen collection pipeline to the venting torch for combustion and venting. After combustion and venting are completed, the location of the hydrogen leak is repaired, and the cavern hydrogen storage device continues to operate.

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