Cavern hydrogen storage device and method

Abstract

According to the cavern hydrogen storage device and method, the cavern hydrogen storage device comprises a fixing assembly, a hydrogen conveying pipeline, a plurality of hydrogen storage assemblies, a supporting assembly and a control assembly, one end of the fixing assembly is fixed to the top of a cavern, and the other end of the fixing assembly is connected with the hydrogen conveying pipeline, so that the hydrogen conveying pipeline is fixed to the top of the cavern, and hydrogen is conveniently stored; the hydrogen storage assemblies are arranged on the hydrogen conveying pipeline at intervals to form hydrogen storage units which are independent from one another; one end of the supporting assembly is fixed to the top of the cavern, and the other end of the supporting assembly is fixedly connected with the hydrogen storage assembly so as to support and fix the hydrogen storage assembly; the control assembly is in communication connection with the hydrogen storage assembly so as to transmit signals to the hydrogen storage assembly and control the hydrogen storage assembly to store / release hydrogen. According to the cavern hydrogen storage device provided by the invention, the construction steps are simplified through a simple connection relation, the construction cost is reduced, the hydrogen storage safety is improved, and a practical foundation is provided for large-scale hydrogen storage of the cavern.

Description

Technical Field

[0001] The invention belongs to the technical field of rock cave hydrogen storage, and in particular relates to a rock cave hydrogen storage device and method. Background Art

[0002] As the global energy transition accelerates, hydrogen energy, as a clean and efficient form of energy, is experiencing unprecedented development opportunities. At present, hydrogen energy has shown great application potential in many fields such as transportation, industry, and construction, and the global market demand for hydrogen energy continues to grow. However, the large-scale application of hydrogen energy still faces many challenges, among which the demand for hydrogen storage technology is particularly urgent. Efficient hydrogen storage technology will become the key to promoting the further development of the hydrogen energy industry.

[0003] my country has a large number of abandoned caverns such as abandoned mines and abandoned tunnels. Using these abandoned caverns for hydrogen storage can not only achieve large-scale hydrogen storage, but also realize the resource utilization of abandoned underground space. Hydrogen has the characteristics of strong permeability of small molecules, so the storage of hydrogen in abandoned caverns requires the tightness of the surrounding rock. However, abandoned mine tunnels and abandoned tunnels pass through various types of rocks and even small faults, and the surrounding rock types are complex; under the influence of mining during the original construction process, some cavern surrounding rocks will be damaged to a certain extent, resulting in cracks, and some cracks will even be connected to the cracks in the original rock and connected to the ground. At the same time, the linings such as concrete sprayed during the original construction process will also be naturally oxidized, deformed and fall off after being abandoned for a long time. These will cause abandoned caverns such as abandoned mine tunnels and abandoned tunnels to have a large number of cracks, thereby affecting the storage of hydrogen.

[0004] At present, both at home and abroad, lining structures are usually built inside rock caves to improve the sealing capacity of hydrogen storage tanks. Such lining structures are usually composed of materials such as concrete and stainless steel. Some hydrogen storage tanks will also lay a layer of polymer materials on the innermost side of the lining structure to ensure that hydrogen will not leak. However, abandoned rock caves such as abandoned mine tunnels and abandoned tunnels have complex structures and can stretch for tens of kilometers. Laying out lining structures on their inner sides increases construction costs and operation and maintenance costs, making it difficult to apply them on a large scale.

[0005] It can be seen that how to provide a rock cave hydrogen storage device that can achieve large-scale hydrogen storage through a simple structure and reduce construction costs is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

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

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention provides a rock cave hydrogen storage device, which includes: a fixing component, one end of which is fixed to the top of the rock cave; a hydrogen transmission pipeline, which is connected to the other end of the fixing component; a plurality of hydrogen storage components, which are arranged on the hydrogen transmission pipeline at intervals; a supporting component, one end of which is fixed to the top of the rock cave, and the other end of which is fixedly connected to each of the hydrogen storage components; and a control component, which is communicatively connected to each of the hydrogen storage components.

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

[0009] In the first aspect, the hydrogen storage device also includes a plurality of hydrogen monitoring probes, each of which is arranged above a corresponding storage and release controller and fixed to the top of the cave; 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 of which is fixed to the top of the cave and located on the outside of a corresponding hydrogen monitoring probe; the other end of each of the support rods 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 of which is fixed to the top of the cave and is located on the outside of a corresponding support rod; the other end of each of the fixing brackets is fixedly connected to the hydrogen pipeline, and a plurality of the fixing brackets are distributed at intervals on the hydrogen pipeline.

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

[0013] In the first aspect, the hydrogen storage device further includes a drainage pipe, which is arranged on the other side of the bottom of the cave; the hydrogen storage device further includes a ventilation fan, which is used to achieve air circulation in the cave.

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

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

[0016] The second aspect of the present invention provides a cave hydrogen storage method, the method comprising: installing and connecting the cave hydrogen storage device according to the first aspect in the cave; exhausting the air in the hydrogen injection pipeline, the hydrogen production pipeline and the flexible lining, and connecting the external hydrogen storage device to one end of the hydrogen injection pipeline and the hydrogen production pipeline respectively through the hydrogen transfer valve; when storing hydrogen, the central controller transmits a signal to the underground wireless network router through the optical cable, so that the corresponding storage and release controller starts to work, and hydrogen is delivered to the flexible lining through the hydrogen injection pipeline; when producing hydrogen, the central controller transmits a signal to the underground wireless network router through the optical cable, so that the corresponding storage and release controller starts to work, and the hydrogen in the flexible lining is delivered. Hydrogen is transported to the external hydrogen storage device through the hydrogen production pipeline; the central controller transmits a signal to the underground wireless network router through an optical cable, so that the hydrogen monitoring probe continuously monitors the hydrogen concentration in the cavern, and determines whether a hydrogen leakage occurs in the cavern according to the hydrogen concentration; when a hydrogen leakage occurs, the hydrogen leakage position is located according to the monitoring data of the hydrogen monitoring probe, and the corresponding storage and release controller is controlled by the central controller to open the corresponding flexible lining to transport hydrogen to the hydrogen injection pipeline or the hydrogen production pipeline to the venting torch for combustion and venting; after the combustion and venting are completed, the hydrogen leakage position is repaired and the cavern hydrogen storage device continues to operate.

[0017] Beneficial effects:

[0018] The present invention provides a rock cave hydrogen storage device, including a fixed component, a hydrogen transmission pipeline, a plurality of hydrogen storage components, a support component and a control component. One end of the fixed component is fixed to the top of the rock cave, and the other end of the fixed component is connected to the hydrogen transmission pipeline to fix the hydrogen transmission pipeline to the top of the rock cave for the convenience of storing hydrogen; a plurality of hydrogen storage components are arranged on the hydrogen transmission pipeline at intervals to form independent hydrogen storage units; one end of the support component is fixed to the top of the rock cave, and the other end of the support component is fixedly connected to the hydrogen storage component to support and fix the hydrogen storage component; the control component is communicatively connected to the hydrogen storage component to transmit signals to the hydrogen storage component to control the hydrogen storage component to store / release hydrogen. The rock cave hydrogen storage device provided by the present invention simplifies the construction steps and improves the safety of hydrogen storage through a simple connection relationship, provides a practical basis for large-scale hydrogen storage in rock caves, and reduces costs at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 Schematic diagram of the cave hydrogen storage device provided in the present invention before hydrogen storage Figure 1 ;

[0021] Figure 2 Schematic diagram of the cave hydrogen storage device provided in the present invention before hydrogen storage Figure 2 ;

[0022] Figure 3 Schematic diagram of the cave hydrogen storage device provided in the present invention after hydrogen storage Figure 1 ;

[0023] Figure 4 Schematic diagram of the cave hydrogen storage device provided in the present invention after hydrogen storage Figure 2 ;

[0024] Reference numerals:

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

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

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

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

[0029] 5. Control components; 51. Underground wireless network routing; 52. Optical cable; 53. Central controller;

[0030] 6. Hydrogen monitoring probe;

[0031] 7. Drainage pipes;

[0032] 8. Hydrogen transfer valve;

[0033] 9. Release the torch;

[0034] 10. External hydrogen storage equipment. DETAILED DESCRIPTION

[0035] The technical scheme of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0036] Meanwhile, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time.

[0037] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] See also Figure 1-4 The present invention provides a cave hydrogen storage device, which includes: a fixing component 1, one end of which is fixed to the top of the cave; a hydrogen transmission pipeline 2, which is connected to the other end of the fixing component 1; a plurality of hydrogen storage components 3, which are arranged on the hydrogen transmission pipeline 2 at intervals; a supporting component 4, one end of which is fixed to the top of the cave, 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 rock cave hydrogen storage device, including a fixing component 1, a hydrogen transmission pipeline 2, a plurality of 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 rock cave, and the other end of the fixing component 1 is connected to the hydrogen transmission pipeline 2 to fix the hydrogen transmission pipeline 2 to the top of the rock cave for the convenience of storing hydrogen; a plurality of hydrogen storage components 3 are arranged on the hydrogen transmission pipeline 2 at intervals to form mutually independent hydrogen storage units; one end of the support component 4 is fixed to the top of the rock cave, and the other end of the support component 4 is fixedly connected to the hydrogen storage component 3 to support and fix the hydrogen storage component 3; the control component 5 is communicatively connected to the hydrogen storage component 3 to transmit signals to the hydrogen storage component 3 to control the hydrogen storage component 3 to store / release hydrogen. The rock cave hydrogen storage device provided by the present invention simplifies the construction steps and improves the safety of hydrogen storage through a simple connection relationship, provides a practical basis for large-scale hydrogen storage in rock caves, and reduces costs at the same time.

[0040] In some possible embodiments, each of the hydrogen storage components 3 includes: a storage-release controller 31, one end of which is connected to the hydrogen transmission pipeline 2, the outer wall of the storage-release controller 31 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; a flexible lining 32, which is detachably connected to the other end of the storage-release controller 31 for storing hydrogen.

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

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

[0043] In order to monitor the concentration of hydrogen in the cave, a number of hydrogen monitoring probes 6 are arranged on the top of the cave. Each hydrogen monitoring probe 6 is arranged above a corresponding storage and release controller 31. Each hydrogen monitoring probe 6 is communicatively connected to the control component 5 to monitor the hydrogen concentration in the cave and transmit the collected data to the control component 5 to determine whether hydrogen leakage occurs and the location of the leakage through analysis.

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

[0045] Those skilled in the art can understand that the support assembly 4 includes a plurality of support rods, one end of each support rod is fixed to the top of the cave and is located on the outside of a corresponding hydrogen monitoring probe 6, and 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, wherein 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 cave, 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 embodiments, the fixing assembly 1 includes a plurality of fixing brackets, one end of each of which is fixed to the top of the cave and is located on the outside of a corresponding support rod; the other end of each of the fixing brackets is fixedly connected to the hydrogen pipeline 2, and a plurality of the fixing brackets are spaced apart and distributed on the hydrogen pipeline 2.

[0047] In order to improve the stability of the hydrogen pipeline 2 and conform to the characteristics of hydrogen, the fixing assembly 1 includes a plurality of 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, and the fixing brackets are distributed on the hydrogen pipeline 2 at intervals and are located on the outside of a corresponding support rod, and the hydrogen pipeline 2 is suspended above the cave by the fixing brackets, wherein each fixing bracket includes a first fixing bracket 11 and a second fixing bracket 12, and the first fixing bracket 11 and the second fixing bracket 12 together form a accommodating space, and each support rod is located in a corresponding accommodating space.

[0048] In some possible embodiments, the control component 5 includes: a plurality of underground wireless network routers 51, each of the underground wireless network routers 51 is communicatively connected to a corresponding one of the hydrogen monitoring probes 6, and each of the underground wireless network routers 51 is communicatively connected to a corresponding one of the storage and release controllers 31; an optical cable 52, the optical cable 52 is arranged on one side of the bottom of the cave and is electrically connected to the underground wireless network router 51; and a central controller 53, the central controller 53 is electrically connected to the optical cable 52.

[0049] Those skilled in the art can understand that the control component 5 includes a plurality of underground wireless network routers 51, optical cables 52 and a central controller 53. Each underground wireless network router 51 is not only communicatively connected to a corresponding hydrogen monitoring probe 6, but also communicatively connected 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 underground wireless network router 51. The optical cable 52 is arranged on one side of the bottom of the cave, and a plurality of underground wireless network routers 51 are distributed at intervals and electrically connected to the optical cable 52 to improve the signal transmission rate in the cave. Furthermore, the central controller 53 is electrically connected to the optical cable 52, and 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 instructions of the hydrogen concentration in the cave and the instructions on whether to store / release 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 underground wireless network router and the optical cable 52, so as to analyze the hydrogen concentration and hydrogen storage conditions in the cave.

[0050] In some possible implementations, the hydrogen storage device further includes: a drainage pipe 7, which is arranged on the other side of the bottom of the cave; and a ventilation fan, which is used to achieve air circulation in the cave.

[0051] In order to prevent the optical cable 52 from being affected by water, a drainage pipe 7 is set on the other side of the bottom of the cave, and the water in the cave is collected and processed through the drainage pipe 7; and a ventilation fan is also set in the cave to achieve air circulation in the cave, which can not only prevent the leakage of hydrogen from accumulating and exploding, but also provide sufficient oxygen for underground workers.

[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] In order to further improve the safety of hydrogen storage in the cave, a hydrogen valve 8 is provided at one end of the hydrogen transmission pipeline 2, through which the hydrogen in the flexible lining 32 is transported to the external hydrogen storage device 10 for use, or the hydrogen in the external hydrogen storage device 10 is transported to the flexible lining 32 for storage. The external hydrogen storage device 10 can be a hydrogen storage tank truck, a hydrogen production station, etc.; a venting torch 9 is provided at the other end of the hydrogen transmission pipeline 2. When the concentration of hydrogen in the cave reaches a safety limit, the hydrogen in the flexible lining 32 is transported to the venting torch 9 for combustion and venting through the central controller 53, so as to improve the safety of hydrogen storage.

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

[0055] Those skilled in the art can understand that the hydrogen transmission pipeline 2 includes a hydrogen injection pipeline 21 and a hydrogen production pipeline 22, and the hydrogen injection pipeline 21 and the hydrogen production pipeline 22 are independent of each other and suspended and fixed on the top of the cave; a plurality of hydrogen storage components 3 are respectively arranged on the hydrogen injection pipeline 21 and the hydrogen production pipeline 22, and are fixed by a support component 4 and a fixing component 1, so that different hydrogen storage components 3 can be injected and produced hydrogen at the same time, thereby improving the operating efficiency of the hydrogen storage device.

[0056] Embodiment 2

[0057] The present invention provides a cavern hydrogen storage method, the method comprising:

[0058] Installing and connecting the cave hydrogen storage device according to the first aspect in the cave;

[0059] Expel the air in the hydrogen injection pipeline 21, the hydrogen production 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 production pipeline 22 through the hydrogen transfer valve 8;

[0060] When storing hydrogen, the central controller 53 transmits a signal to the underground wireless network router 51 through the optical cable 52, so that the corresponding storage and release controller 31 starts to work and transmits hydrogen to the flexible lining 32 through the hydrogen injection pipeline 21;

[0061] When hydrogen is produced, the central controller 53 transmits a signal to the underground wireless network router 51 through the optical cable 52, so that the corresponding storage and release controller 31 starts to work, and the hydrogen in the flexible lining 32 is transported to the external hydrogen storage device 10 through the hydrogen production pipeline 22;

[0062] The central controller 53 transmits a signal to the underground wireless network router 51 through the optical cable 52, so that the hydrogen monitoring probe 6 continuously monitors the hydrogen concentration in the cave, and determines whether hydrogen leakage occurs in the cave according to the hydrogen concentration;

[0063] When hydrogen leakage occurs, the hydrogen leakage position is located according to 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 transport hydrogen to the hydrogen injection pipeline 21 or the hydrogen production pipeline 22 to the venting torch 9 for combustion and venting; after the combustion and venting are completed, the hydrogen leakage position is repaired and the cave hydrogen storage device continues to operate.

[0064] Specifically, the present invention provides a cave hydrogen storage method, in which a cave hydrogen storage device according to the first aspect is installed and connected in a cave, the air in the hydrogen injection pipeline 21, the hydrogen production pipeline 22 and the flexible lining 32 is discharged, and the external hydrogen storage device 10 is connected to one end of the hydrogen injection pipeline 21 and the hydrogen production pipeline 22 respectively through the hydrogen transfer valve 8 to complete the preliminary preparation work; when storing hydrogen, the central controller 53 is started, and a signal is transmitted to the underground wireless network router 51 through the optical cable 52, so that the corresponding storage and release controller 31 starts to work, and hydrogen is transported to the flexible lining 32 through the hydrogen injection pipeline 21; when producing hydrogen, the central controller 53 transmits a signal to the underground wireless network router 51 through the optical cable 52, so that the corresponding storage and release controller 31 starts to work, and hydrogen in the flexible lining 32 is transported. Hydrogen is delivered to the external hydrogen storage device 10 through the hydrogen production pipeline 22; further, in order to improve the safety of the rock cave hydrogen storage device, during the operation of the entire rock cave hydrogen storage device, the central controller 53 transmits a signal to the underground wireless network router 51 through the optical cable 52, so that the hydrogen monitoring probe 6 continuously monitors the hydrogen concentration in the rock cave, and determines whether a hydrogen leak occurs in the rock cave by the hydrogen concentration; when a hydrogen leak occurs, the hydrogen leak position is accurately located according to the monitoring data of the hydrogen monitoring probe 6, and the central controller 53 is started to control the corresponding storage and release controller 31 to open the corresponding flexible lining 32 to deliver hydrogen to the hydrogen injection pipeline 21 or the hydrogen production pipeline 22 to the venting torch 9 for combustion and venting; after the combustion and venting are completed, the hydrogen leakage position is repaired so that the rock cave hydrogen storage device can operate normally. The hydrogen injection pipeline 21 and the hydrogen production pipeline 22 set at the top of the rock cave of the present invention are independent of each other, and combined with each hydrogen storage component that can operate independently, so that different hydrogen storage components can realize simultaneous hydrogen injection and production under the scheduling of the central controller, realize the ability of flexible peak regulation, and improve the operation efficiency of the rock cave hydrogen storage device.

[0065] Since the second embodiment and the first embodiment are embodiments of the same inventive concept and some of their structures are exactly the same, the structures in the second embodiment that are substantially the same as those in the first embodiment will not be elaborated in detail. For the parts not described in detail, please refer to the first embodiment.

[0066] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. They should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

[0067] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cave hydrogen storage device, characterized in that: The hydrogen storage device comprises: A fixing assembly, one end of which is fixed to the top of the cave; A hydrogen delivery pipeline connected to the other end of the fixed component; A plurality of hydrogen storage assemblies, wherein the plurality of hydrogen storage assemblies are arranged at intervals on the hydrogen transmission pipeline; A support assembly, one end of which is fixed to the top of the cave, and the other end of which is fixedly connected to each of the hydrogen storage assemblies; A control component is communicatively connected with each of the hydrogen storage components.

2. The cave hydrogen storage device according to claim 1, characterized in that: Each of the hydrogen storage components comprises: A storage-release controller, one end of which is connected to the hydrogen transmission pipeline, an outer wall of which is fixedly connected to the other end of the support assembly, and the storage-release controller is in communication connection with the control assembly; A flexible lining is detachably connected to the other end of the storage and release controller and is used for storing hydrogen.

3. The cave hydrogen storage device according to claim 2, characterized in that: The hydrogen storage device also includes a plurality of hydrogen monitoring probes, each of which is arranged above a corresponding storage and release controller and fixed to the top of the cave; each of the hydrogen monitoring probes is communicatively connected to the control component.

4. The cave hydrogen storage device according to claim 3, characterized in that: The support assembly includes a plurality of support rods, one end of each of which is fixed to the top of the cave and located outside a corresponding hydrogen monitoring probe; the other end of each of which is fixedly connected to the outer wall of the storage and release controller.

5. The cave hydrogen storage device according to claim 4, characterized in that: The fixing assembly includes a plurality of fixing brackets, one end of each of which is fixed to the top of the cave and is located on the outside of a corresponding support rod; the other end of each of the fixing brackets is fixedly connected to the hydrogen transmission pipeline, and a plurality of the fixing brackets are distributed at intervals on the hydrogen transmission pipeline.

6. The cave hydrogen storage device according to claim 5, characterized in that: The control component comprises: A plurality of underground wireless network routes, each of which is communicatively connected to a corresponding hydrogen monitoring probe, and each of which is communicatively connected to a corresponding storage and release controller; An optical cable, which is arranged on one side of the bottom of the cave and is electrically connected to the underground wireless network router; A central controller is electrically connected to the optical cable.

7. The cave hydrogen storage device according to claim 6, characterized in that: The hydrogen storage device also includes: A drainage pipe, the drainage pipe being arranged on the other side of the bottom of the cave; A ventilation fan is used to achieve air circulation in the cave.

8. The cave hydrogen storage device according to claim 7, characterized in that: The hydrogen storage device also includes: A hydrogen delivery valve, which is arranged at one end of the hydrogen delivery pipeline and connected to an external hydrogen storage device; A venting flare is connected to the other end of the hydrogen transport pipeline.

9. The cave hydrogen storage device according to claim 8, characterized in that: The hydrogen transmission pipeline comprises a hydrogen injection pipeline and a hydrogen production pipeline; the hydrogen injection pipeline and the hydrogen production pipeline are independent of each other and are suspended and fixed on the top of the rock cave.

10. A method for storing hydrogen in a cave, characterized in that: The method comprises: Installing and connecting the cave hydrogen storage device according to claim 9 in the cave; Expel the air in the hydrogen injection pipeline, hydrogen production pipeline and flexible lining, and connect the external hydrogen storage equipment to one end of the hydrogen injection pipeline and hydrogen production pipeline respectively through the hydrogen transfer valve; When storing hydrogen, the central controller transmits a signal to the underground wireless network router through the optical cable, so that the corresponding storage and release controller starts to work and transmits hydrogen into the flexible lining through the hydrogen injection pipeline; When hydrogen is produced, the central controller transmits a signal to the underground wireless network router through an optical cable, so that the corresponding storage and release controller starts to work, and the hydrogen in the flexible lining is transported to the external hydrogen storage device through the hydrogen production pipeline; The central controller transmits a signal to the underground wireless network router through an optical cable, so that the hydrogen monitoring probe continuously monitors the hydrogen concentration in the cave, and determines whether a hydrogen leak occurs in the cave according to the hydrogen concentration; When hydrogen leakage occurs, the hydrogen leakage position is located according to the monitoring data of the hydrogen monitoring probe, and the corresponding storage and release controller is controlled by the central controller to open the corresponding flexible lining to transport hydrogen to the hydrogen injection pipeline or the hydrogen production pipeline to the venting torch for combustion and venting; after the combustion and venting are completed, the hydrogen leakage position is repaired and the cave hydrogen storage device continues to operate.

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