Underground hydrogen storage warehouse

Abstract

The underground hydrogen storage warehouse comprises a warehouse body and a sealing structure, the warehouse body is buried underground, the warehouse body is sequentially provided with a steel lining layer, a carbon fiber layer and a concrete layer from inside to outside, the steel lining layer is used for sealing hydrogen, one end of the steel lining layer is provided with an installation opening, the carbon fiber layer is wrapped on the periphery of the steel lining layer, and the concrete layer is arranged on the carbon fiber layer. The carbon fiber layer is arranged on the steel lining layer so as to improve the pressure bearing capacity of the steel lining layer, and the concrete layer is used for supporting and fixing the carbon fiber layer and the steel lining layer. The sealing structure seals the mounting opening, and the sealing structure is provided with a communicating hole communicating with the interior of the steel lining layer. According to the hydrogen storage device, hydrogen can be guided into the steel lining layer through the communicating holes to be stored, the periphery of the steel lining layer is coated with the carbon fiber layer, so that the pressure bearing capacity of the steel lining layer is improved, and the steel lining layer can bear the pressure applied by the hydrogen. The carbon fiber layer shares the pressure borne by the concrete layer, so that the load borne by the concrete layer is reduced, the construction requirement of the concrete layer is further reduced, and the construction speed of the hydrogen storage warehouse is greatly increased.

Description

Technical Field

[0001] The utility model relates to a hydrogen storage facility, in particular to an underground hydrogen storage depot. Background Art

[0002] Hydrogen is the most abundant element in nature, with a wide range of sources, and its only combustion product is water. Therefore, hydrogen is regarded as the best clean energy in the future.

[0003] Existing underground hydrogen storage facilities, such as those in patent application number CN202311016127.8, utilize a metal lining to store hydrogen. A concrete layer is laid around the metal lining to support the metal lining and increase its pressure-bearing capacity. The resulting concrete layer is held to extremely high standards for precision and strength. This increases the construction requirements for the concrete layer, making the pouring process more complex and requiring a longer construction period.

[0004] Therefore, how to reduce the construction requirements of the concrete layer is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the present invention is to overcome the above technical deficiencies, propose an underground hydrogen storage reservoir, and solve the technical problem of how to reduce the construction requirements of the concrete layer in the prior art.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] The utility model provides an underground hydrogen storage reservoir, which includes:

[0008] A storage body buried underground, wherein the storage body is provided with a steel lining layer, a carbon fiber layer, and a concrete layer in order from the inside out, the steel lining layer is used to seal hydrogen, and a mounting opening is opened at one end of the steel lining layer, the carbon fiber layer is coated on the outer periphery of the steel lining layer to improve the pressure bearing capacity of the steel lining layer, and the concrete layer is used to support and fix the carbon fiber layer and the steel lining layer; and

[0009] A sealing structure seals the installation opening, and the sealing structure is provided with a communicating hole communicating with the interior of the steel lining.

[0010] In some embodiments, the sealing structure includes a closing seat, which is installed on the installation opening and closes the installation opening, and the communicating hole is opened in the closing seat.

[0011] In some embodiments, a conical surface surrounding the communicating hole is formed at one end of the closing seat close to the steel liner.

[0012] In some embodiments, the storage body further includes a rock and soil layer, the rock and soil layer is coated on the outer periphery of the concrete, and the closing seat is connected to the rock and soil layer.

[0013] In some embodiments, the sealing structure includes a plurality of connecting anchors, which are arranged along the circumference of the storage body, one end of each connecting anchor is connected to the closing seat, and the other end of each connecting anchor extends into the rock and soil layer.

[0014] In some embodiments, one end of the connecting anchor extending into the rock and soil layer is inclined away from the reservoir body.

[0015] In some embodiments, the closing seat is provided with a hydrogen outlet hole and a hydrogen inlet hole, and the sealing structure further comprises a multi-way valve, which is connected to the hydrogen outlet hole, the hydrogen inlet hole and the connecting hole respectively.

[0016] In some embodiments, the closing seat is further provided with a relief hole, and the relief hole is connected to the multi-way valve.

[0017] In some embodiments, the steel lining is a stainless steel lining.

[0018] In some embodiments, the concrete layer is a UHPC concrete layer.

[0019] Hydrogen can be introduced into the steel liner through the connecting holes for storage. The carbon fiber layer is wrapped around the outer periphery of the steel liner to improve its pressure-bearing capacity, allowing the steel liner to withstand the pressure exerted by the hydrogen. Because the carbon fiber layer shares the pressure on the concrete layer, it reduces the load on the concrete layer, thereby reducing the construction requirements of the concrete layer and significantly speeding up the construction of the hydrogen storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the underground hydrogen storage provided by an embodiment of the present utility model.

[0021] Description of reference numerals: storage body 100, steel lining 110, installation opening 111, carbon fiber layer 120, concrete layer 130, rock and soil layer 140, sealing structure 200, sealing seat 210, connecting hole 211, hydrogen outlet hole 212, hydrogen inlet hole 213, release hole 214, connecting anchor 220, DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In order to solve the technical problem of how to reduce the construction requirements of the concrete layer 130, the utility model provides an underground hydrogen storage tank, which shares the pressure borne by the concrete layer 130 through the carbon fiber layer 120, reduces the load borne by the concrete layer 130, and thereby reduces the construction requirements of the concrete layer 130.

[0024] It should be noted that the underground hydrogen storage reservoir of the present invention is used for but not limited to hydrogen storage facilities, etc. For the convenience of explanation, in the present invention, only the application of the underground hydrogen storage reservoir to hydrogen storage facilities is used as an example for explanation. The principles of applying the underground hydrogen storage reservoir to other types of equipment are essentially the same as those applied to hydrogen storage facilities, and will not be elaborated here.

[0025] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of an underground hydrogen storage reservoir in one embodiment of the present invention. The underground hydrogen storage reservoir includes a reservoir body 100 and a sealing structure 200. The reservoir body 100 is buried underground and is provided with a steel lining 110, a carbon fiber layer 120, and a concrete layer 130 from the inside out. The steel lining 110 is used to seal hydrogen and has a mounting opening 111 at one end. The carbon fiber layer 120 is coated on the outer periphery of the steel lining 110 to improve the pressure bearing capacity of the steel lining 110. The concrete layer 130 is used to support and fix the carbon fiber layer 120 and the steel lining 110. The sealing structure 200 closes the mounting opening 111 and has a connecting hole 211 that connects to the interior of the steel lining 110.

[0026] In this embodiment, hydrogen can be introduced into the steel liner 110 through the connecting holes 211 for storage. The carbon fiber layer 120 is coated around the outer periphery of the steel liner 110 to improve the pressure-bearing capacity of the steel liner 110, allowing the steel liner 110 to withstand the pressure exerted by the hydrogen. Because the carbon fiber layer 120 shares the pressure on the concrete layer 130, it reduces the load on the concrete layer 130, thereby reducing the construction requirements of the concrete layer 130 and significantly speeding up the construction of the hydrogen storage tank.

[0027] In some embodiments, the sealing structure 200 includes a sealing seat 210 . The sealing seat 210 is installed at the installation opening 111 and seals the installation opening 111 . The communicating hole 211 is defined in the sealing seat 210 .

[0028] Based on the above embodiments, in some embodiments, a conical surface surrounding the communication hole 211 is formed at one end of the closing seat 210 close to the steel lining 110 .

[0029] In this embodiment, since the closing seat 210 is provided with a conical surface surrounding the communicating hole 211 , the conical surface can guide the airflow and guide the hydrogen in the steel lining 110 to be discharged through the communicating hole 211 .

[0030] In some embodiments, the storage body 100 further includes a rock and soil layer 140 , the rock and soil layer 140 is wrapped around the outer periphery of the concrete, and the closing seat 210 is connected to the rock and soil layer 140 .

[0031] In this embodiment, since the concrete layer 130 is covered with the rock layer 140, the rock layer 140 can also provide a certain amount of support for the concrete layer 130, thereby improving the structural strength of the concrete. The sealing seat 210 is connected to the rock layer 140, so that the rock layer 140 can be more firmly installed in the installation opening 111.

[0032] In some embodiments, the sealing structure 200 includes a plurality of connecting anchors 220 , which are arranged along the circumference of the storage body 100 , one end of the connecting anchor 220 is connected to the sealing seat 210 , and the other end of the connecting anchor 220 extends into the rock layer 140 .

[0033] In this embodiment, since one end of the connecting anchor 220 is connected to the closing seat 210 and the other end thereof extends into the rock and soil layer 140 , the closing seat 210 can be tightly attached to the rock and soil layer 140 under the pulling of the connecting anchor 220 .

[0034] Based on the above embodiments, in some embodiments, one end of the connecting anchor 220 extending into the rock and soil layer 140 is inclined in a direction away from the reservoir body 100 .

[0035] In this embodiment, since the connecting anchor 220 is arranged at an angle, the connecting anchor 220 can not only apply tension in the axial direction to the closing seat 210, but also apply tension in the radial direction, making the closing seat 210 more stable.

[0036] In some embodiments, the sealing seat 210 is provided with a hydrogen outlet hole 212 and a hydrogen inlet hole 213 , and the sealing structure 200 further includes a multi-way valve, which respectively connects the hydrogen outlet hole 212 , the hydrogen inlet hole 213 and the connecting hole 211 .

[0037] In this embodiment, when hydrogen needs to be extracted from the steel liner 110, the hydrogen outlet hole 212 and the connecting hole 211 can be individually connected by a multi-way valve, so that hydrogen can be extracted outward through the connecting hole 211 and the hydrogen outlet hole 212. When hydrogen needs to be introduced into the steel liner 110, the hydrogen inlet hole 213 and the connecting hole 211 can be individually connected by a multi-way valve, so that hydrogen can be introduced into the steel liner 110 through the hydrogen inlet hole 213 and the connecting hole 211.

[0038] On the basis of the above embodiments, in some embodiments, the closing seat 210 is further provided with a venting hole 214 , and the venting hole 214 is connected to the multi-way valve.

[0039] In this embodiment, when degassing and pressure reduction are required, the vent hole 214 and the connecting hole 211 can be connected to each other through the multi-way valve, so that the hydrogen in the steel lining 110 can be guided to the outside through the connecting hole 211 and the vent hole 214.

[0040] In some embodiments, the steel liner 110 is a stainless steel liner 110 .

[0041] In this embodiment, since the steel lining 110 is made of stainless steel, the steel lining 110 has sufficient corrosion resistance.

[0042] In some embodiments, the concrete layer 130 is a UHPC concrete layer 130 .

[0043] In this embodiment, since the concrete layer 130 is made of UHPC concrete layer 130 , the concrete layer 130 has better structural strength.

[0044] In order to better understand the present invention, the following Figure 1 The technical solution of the utility model is described in detail:

[0045] When it is necessary to extract the hydrogen from the steel lining 110, the hydrogen outlet hole 212 and the connecting hole 211 can be connected separately through a multi-way valve, so that the hydrogen is extracted outward through the connecting hole 211 and the hydrogen outlet hole 212. When it is necessary to introduce hydrogen into the steel lining 110, the hydrogen inlet hole 213 and the connecting hole 211 can be connected separately through a multi-way valve, so that the hydrogen is introduced into the steel lining 110 through the hydrogen inlet hole 213 and the connecting hole 211. Since the carbon fiber layer 120 is coated on the outer periphery of the steel lining 110 to improve the pressure bearing capacity of the steel lining 110, the steel lining 110 can withstand the pressure exerted by the hydrogen. Since the carbon fiber layer 120 shares the pressure borne by the concrete layer 130, it reduces the load borne by the concrete layer 130, thereby reducing the construction requirements of the concrete layer 130, and greatly improving the construction speed of the hydrogen storage tank.

[0046] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An underground hydrogen storage reservoir, characterized in that: include: A storage body buried underground, wherein the storage body is provided with a steel lining layer, a carbon fiber layer, and a concrete layer in order from the inside out. The steel lining layer is used to seal hydrogen and has an installation opening at one end. The carbon fiber layer is coated on the outer periphery of the steel lining layer to improve the pressure bearing capacity of the steel lining layer. The concrete layer is used to support and fix the carbon fiber layer and the steel lining layer. as well as A sealing structure seals the installation opening, and the sealing structure is provided with a communicating hole communicating with the interior of the steel lining.

2. The underground hydrogen storage reservoir according to claim 1, characterized in that The sealing structure includes a sealing seat, which is installed on the installation opening and seals the installation opening. The communicating hole is opened in the sealing seat.

3. The underground hydrogen storage reservoir according to claim 2, characterized in that One end of the closing seat close to the steel lining is provided with a conical surface surrounding the communicating hole.

4. The underground hydrogen storage reservoir according to claim 2, characterized in that The storage body also includes a rock and soil layer, which is coated on the outer periphery of the concrete, and the closing seat is connected to the rock and soil layer.

5. The underground hydrogen storage reservoir according to claim 4, characterized in that: The sealing structure includes a plurality of connecting anchors, which are arranged along the circumference of the storage body. One end of the connecting anchor is connected to the closing seat, and the other end of the connecting anchor extends into the rock and soil layer.

6. The underground hydrogen storage according to claim 5, characterized in that One end of the connecting anchor extending into the rock and soil layer is inclined in a direction away from the reservoir body.

7. The underground hydrogen storage reservoir according to claim 2, characterized in that: The sealing seat is provided with a hydrogen outlet hole and a hydrogen inlet hole, and the sealing structure further comprises a multi-way valve, which is connected to the hydrogen outlet hole, the hydrogen inlet hole and the connecting hole respectively.

8. The underground hydrogen storage according to claim 7, characterized in that: The closing seat is further provided with a relief hole, and the relief hole is communicated with the multi-way valve.

9. The underground hydrogen storage reservoir according to claim 1, characterized in that: The steel lining is a stainless steel lining.

10. The underground hydrogen storage according to claim 1, characterized in that The concrete layer is a UHPC concrete layer.

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