Footed base plate type skeleton, sealed liner structure, underground gas storage and construction method

Abstract

The application provides a foot frame bottom plate type framework, a sealed lining structure, an underground gas storage and a construction method, and belongs to the technical field of compressed air energy storage. The framework comprises a fixed bottom plate and an umbrella-shaped foot frame. The umbrella-shaped foot frame is provided with a connecting part and an umbrella-shaped part. The umbrella-shaped part is arranged at the top of the connecting part, so that the umbrella-shaped part has protrusions on both sides of the length direction of the umbrella-shaped foot frame. The umbrella-shaped foot frame is fixedly connected to the fixed bottom plate in the length direction, so as to form a semi-open containing space clamping opening. The height of the semi-open containing space close to the connecting part of the umbrella-shaped foot frame is greater than the height of the semi-open containing space close to the open side of the umbrella-shaped foot frame. The sealed lining structure comprises an airtight layer and the foot frame bottom plate type framework. The underground gas storage comprises a concrete lining layer and the sealed lining structure. The sealed lining structure is fixedly arranged on the inner wall of the concrete lining layer through the fixed bottom plate of the foot frame bottom plate type framework. The construction period is shorter than that of the welded steel plate, and the cost is lower.

Description

Technical Field

[0001] This invention relates to the field of compressed air energy storage technology, and in particular to a scaffold base plate frame, a sealed inner lining structure, an underground air storage facility, and a construction method. Background Technology

[0002] Compressed air energy storage systems primarily utilize surface steel tanks / pipes, salt caverns, and artificially lined chambers as high-pressure air storage containers. Large-scale storage facilities currently rely on salt caverns and artificially lined chambers. However, with the gradual advancement of industrialization, artificially lined chambers will gradually become the most widely used gas storage method. Unlike ordinary underground chambers, artificially lined chambers specifically designed for gas storage will withstand high internal pressure, high temperature variations, and high-frequency alternating loads, posing new challenges to the design of the chamber's sealing layer. Summary of the Invention

[0003] In view of this, the present invention provides a scaffold base plate frame, a sealed inner lining structure, an underground gas storage facility, and a construction method. The scaffold base plate frame can be assembled to form a sealed inner lining structure for construction of an underground gas storage facility, thereby forming the sealed inner lining structure on the inner wall of the underground gas storage facility. Its construction period is shorter and the cost is lower than that of welding steel plates, making it more suitable for practical use.

[0004] To achieve the first objective mentioned above, the technical solution of the tripod base plate frame provided by the present invention is as follows: The tripod base plate frame provided by the present invention includes a fixed base plate (10) and an umbrella-shaped tripod (11). The fixed base plate (10) has a length direction and a width direction. The umbrella-shaped leg (11) has a length direction and a width direction. The umbrella-shaped leg (11) is provided with a connecting part and an umbrella-shaped part. The umbrella-shaped part is disposed on the top of the connecting part, such that the umbrella-shaped part has protrusions on both sides of the umbrella-shaped leg (11) in the length direction toward the connecting part. The umbrella-shaped leg (11) is fixedly connected to the fixed base plate (10) along the length direction of the fixed base plate (10) by means of its connecting part, so that a semi-open accommodating space is formed between the umbrella-shaped part of the umbrella-shaped leg (11) and the fixed base plate (10), and the height of the semi-open accommodating space near the connecting part of the umbrella-shaped leg (11) is h1, and the height of the semi-open accommodating space near the open side of the umbrella-shaped leg (11) is h2, where h1 > h2.

[0005] The tripod base plate frame provided by this invention can be further implemented using the following technical measures.

[0006] Preferably, the connecting part and the umbrella-shaped part of the umbrella-shaped leg (11) are integrally formed.

[0007] Preferably, the umbrella-shaped leg (11) is fixedly connected to the fixed base plate (10) by fastening bolts, or the umbrella-shaped leg (11) and the fixed base plate (10) are integrally formed.

[0008] Preferably, the base plate frame of the tripod is made of corrosion-resistant steel.

[0009] To achieve the second objective mentioned above, the technical solution for the sealing liner structure provided by the present invention is as follows: The sealing liner structure provided by the present invention includes an airtight layer (3) and at least one leg base plate type frame provided by the present invention. The airtight layer (3) is set on the base plate frame of the tripod through the clamp with the semi-open accommodating space.

[0010] The sealing liner structure provided by the present invention can also be further implemented using the following technical measures.

[0011] Preferably, the airtight layer (3) is made of a material that can be deformed under pressure.

[0012] Preferably, the edge of the airtight layer (3) is provided with a fitting part that fits into the semi-open accommodating space clamp, and the airtight layer (3) is set on the base plate frame of the leg through the fitting part.

[0013] Preferably, the tripod base plate frame includes multiple components. Multiple tripod base plate frames are arranged in a crisscross pattern, forming a hollow space between them; The airtight layer (3) is set in the hollow through the clamp with the semi-open accommodating space.

[0014] Preferably, the sealing liner structure is a sealing liner structure disposed on the inner wall of a cylinder. The tripod base plate frame includes multiple axial frames and multiple circumferential frames. The multiple axial frames and multiple circumferential frames are connected in a crisscross pattern, forming a hollow space between the multiple tripod base plate frames. The airtight layer (3) is set in the hollow through the clamp with the semi-open accommodating space.

[0015] Preferably, the plurality of axial skeletons and the plurality of circumferential skeletons are arranged uniformly.

[0016] To achieve the third objective mentioned above, the technical solution for the underground gas storage facility provided by this invention is as follows: The underground gas storage facility provided by this invention includes a concrete lining layer (1) and a sealed inner lining structure provided by this invention. The inner wall of the concrete lining layer (1) is cylindrical. The sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer (1) by the fixed base plate (10) of the scaffold base plate frame.

[0017] To achieve the fourth objective mentioned above, the technical solution for the construction method of the underground gas storage facility provided by this invention is as follows: The construction method for the underground gas storage facility provided by this invention includes the following steps: According to the inner diameter of the underground gas storage, assemble the scaffold base plate frame. The scaffold base plate frame includes multiple axial frames and multiple circumferential frames. The multiple axial frames and multiple circumferential frames are connected in a crisscross pattern, forming a hollow between the multiple scaffold base plate frames. The scaffold base plate frame is laid to the inner wall of the underground gas storage facility, and the scaffold base plate frame is fixed to the inner wall of the underground gas storage facility. The airtight layer (3) is embedded in the hollow through the semi-open accommodating space clamp, so that the inner wall of the underground gas storage tank forms the sealed inner lining structure provided by the present invention.

[0018] The construction method for the underground gas storage facility provided by this invention can be further implemented using the following technical measures.

[0019] Preferably, laying the scaffold base plate frame onto the inner wall of the underground gas storage facility, and fixing the scaffold base plate frame to the inner wall of the underground gas storage facility specifically includes the following steps: A first type of connection hole is drilled in the inner wall of the underground gas storage facility; Adjust the position of the scaffold base plate frame so that the second type of connection hole of the scaffold base plate frame corresponds to the position of the first type of connection hole on the inner wall of the underground gas storage tank; The set bolts are simultaneously screwed into the first type of connection hole and the second type of connection hole, so that the base plate frame of the scaffold is fixed to the inner wall of the underground gas storage.

[0020] Preferably, after the step of embedding the airtight layer (3) into the hollow through the semi-open accommodating space clamp, so that the inner wall of the underground gas storage tank forms the sealed inner lining structure provided by the present invention, the following steps are further included: A gas storage test was conducted on the underground gas storage facility to determine its sealing performance. Real-time monitoring is conducted on potential gas leak locations in the underground gas storage facility.

[0021] Preferably, during the step of real-time monitoring of possible leak points in the underground gas storage, the possible leak points include: the connection between the airtight layer (3) and the scaffold base plate frame, the connection between the connection part of the scaffold base plate frame and the umbrella-shaped part, the connection between the fixed base of the scaffold base plate frame and the inner wall of the underground gas storage, and one or more of the parts of the airtight layer (3) itself.

[0022] Preferably, real-time monitoring of potential leak points in the underground gas storage facility includes the following steps: Gas flow monitoring instruments are installed at potential gas leakage points in the underground gas storage facility, and location tags are assigned to each gas flow monitoring instrument. An alarm threshold is set for the gas flow monitoring instrument based on its location. When an abnormal gas flow alarm is detected, the location of the leak in the underground gas storage facility is determined based on the location label of the gas flow monitoring instrument that triggered the alarm.

[0023] The scaffold base plate frame provided by this invention can embed an airtight layer 3 within its semi-open accommodating space. Since the height of the semi-open accommodating space near the connecting part of the umbrella-shaped scaffold is greater than the height of the semi-open accommodating space near the open side of the umbrella-shaped scaffold, the outer edge of the bulk scaffold 11 can be fitted with the airtight layer 3, thus preventing displacement or detachment of the airtight layer 3 and ensuring airtightness. Therefore, it is formed inside the concrete lining layer 1 of the underground gas storage facility. Its construction period is shorter than that of welded steel plates, its cost is lower, it has good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. The airtight layer 3 has a short construction period, and its components can be prefabricated. Compared with the disadvantage of traditional steel plate lining requiring on-site welding, it can save a lot of construction time and has a lower cost. During maintenance, damaged parts can be directly replaced. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Appendix Figure 1 A schematic diagram of the radial cross-sectional structure of an underground gas storage facility provided in an embodiment of the present invention; Appendix Figure 2 For the appendix Figure 1 A magnified schematic diagram of part A in the middle section; Appendix Figure 3This is a schematic diagram of a typical cross-section of the tripod base plate frame provided in an embodiment of the present invention; Appendix Figure 4 A schematic diagram of the interlocking connection points of the tripod base plate frame provided in an embodiment of the present invention; Appendix Figure 5 This is a schematic diagram of a typical cross-section of the frame base plate type frame and the airtight layer provided in an embodiment of the present invention. Appendix Figure 6 This is a schematic diagram of a typical cross-section of a scaffold base plate frame with a cylindrical inner wall sealing liner structure provided in an embodiment of the present invention. Detailed Implementation

[0025] In view of this, the present invention provides a scaffold base plate frame, a sealed inner lining structure, an underground gas storage facility, and a construction method. The scaffold base plate frame can be assembled to form a sealed inner lining structure. When constructing an underground gas storage facility, the sealed inner lining structure is formed on the inner wall of the underground gas storage facility, which can significantly enhance the sealing performance of the underground gas storage facility, thus making it more suitable for practical use.

[0026] Through arduous and persistent efforts, the inventor discovered that Traditional design approaches use steel plates as sealing materials, but steel plate sealing is costly, has good thermal insulation properties, and is subject to prolonged high-temperature loads. Research indicates that rubber materials possess the basic requirements for use as sealing layers in high-pressure gas storage chambers, offering low unit cost and good mechanical and sealing performance. However, traditional rubber gas storage materials are manufactured as a single unit at the factory, making installation in underground gas storage chambers extremely difficult. Therefore, designing a modular sealing lining structure that is easy to install while ensuring sealing performance has become a pressing issue.

[0027] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a scaffold base plate frame, sealed inner lining structure, underground gas storage facility, and construction method proposed according to the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable manner.

[0028] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships, such as A and / or B. Specifically, it can mean that A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

[0029] Frame base plate type See appendix Figure 1 To be continued Figure 6 The tripod base plate frame provided in this embodiment of the invention includes a fixed base plate 10 and an umbrella-shaped tripod 11. The fixed base plate 10 has a length direction and a width direction, and the umbrella-shaped tripod 11 has a length direction and a width direction. The umbrella-shaped tripod 11 is provided with a connecting part and an umbrella-shaped part. The umbrella-shaped part is disposed on the top of the connecting part, so that the umbrella-shaped part has protrusions on both sides of the umbrella-shaped tripod 11 along the length direction of the connecting part. The umbrella-shaped tripod 11 is fixedly connected to the fixed base plate 10 along the length direction of the fixed base plate 10 by means of its connecting part, so that a semi-open accommodating space is formed between the umbrella-shaped part of the umbrella-shaped tripod 11 and the fixed base plate 10. The height of the semi-open accommodating space near the connecting part of the umbrella-shaped tripod 11 is h1, and the height of the semi-open accommodating space near the open side of the umbrella-shaped tripod 11 is h2, where h1 > h2.

[0030] The scaffold base plate frame provided in this embodiment of the invention can embed an airtight layer 3 within its semi-open accommodating space. Since the height of the semi-open accommodating space near the connecting part of the umbrella-shaped scaffold is greater than the height of the semi-open accommodating space near the open side of the umbrella-shaped scaffold, the outer edge of the bulk scaffold 11 can be fitted with the airtight layer 3, thus preventing displacement or detachment of the airtight layer 3 and ensuring airtightness. Therefore, it is formed inside the concrete lining layer 1 of the underground gas storage facility. Its construction period is shorter than that of welded steel plates, its cost is lower, it has good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. The airtight layer 3 has a short construction period, and its components can be prefabricated. Compared with the disadvantage of traditional steel plate lining requiring on-site welding, it can save a lot of construction time and has a lower cost. During maintenance, damaged parts can be directly replaced.

[0031] In this design, the connecting part and the umbrella-shaped part of the umbrella-shaped leg 11 are integrally formed. In this case, there is no connecting joint between the connecting part and the umbrella-shaped part, which can avoid stress concentration and thus extend the service life of the umbrella-shaped leg 11.

[0032] The umbrella-shaped leg 11 is fixedly connected to the fixed base plate 10 by fastening bolts, or the umbrella-shaped leg 11 and the fixed base plate 10 are integrally formed. In this case, there is no connecting joint between the umbrella-shaped leg 11 and the fixed base plate 10, which can avoid stress concentration and thus extend the service life of the leg base plate frame provided in the embodiment of the present invention.

[0033] The scaffold base plate frame is made of corrosion-resistant steel. It contains less than 2.11% carbon and is an iron-carbon alloy containing only iron, carbon, and limited amounts of silicon, manganese, phosphorus, and sulfur, without other alloying elements. Industrial carbon steel typically contains 0.05% to 1.35% carbon. The performance of corrosion-resistant steel depends primarily on its carbon content. Increased carbon content leads to higher strength and hardness, but lower plasticity, toughness, and weldability. Compared to other steel types, corrosion-resistant steel was the earliest to be used, has the lowest cost, a wide performance range, and the largest usage. It is suitable for media such as water, steam, air, hydrogen, ammonia, nitrogen, and petroleum products with a nominal pressure PN ≤ 32.0 MPa and a temperature of -30 to 425℃. Commonly used grades include WC1, WCB, ZG25, and high-quality steels 20, 25, and 30, as well as low-alloy structural steel 16Mn. Therefore, using corrosion-resistant steel to make the scaffold base plate frame provided in this embodiment of the invention can improve the strength of the scaffold base plate frame.

[0034] Sealed liner structure The sealing liner structure provided by the present invention includes an airtight layer 3 and at least one tripod base plate frame provided by the present invention. The airtight layer 3 is disposed on the tripod base plate frame through a clamp having a semi-open accommodating space.

[0035] The scaffold base plate frame provided in this embodiment of the invention can embed an airtight layer 3 within its semi-open accommodating space. Since the height of the semi-open accommodating space near the connecting part of the umbrella-shaped scaffold is greater than the height of the semi-open accommodating space near the open side of the umbrella-shaped scaffold, the outer edge of the bulk scaffold 11 can be fitted with the airtight layer 3, thus preventing displacement or detachment of the airtight layer 3 and ensuring airtightness. Therefore, it is formed inside the concrete lining layer 1 of the underground gas storage facility. Its construction period is shorter than that of welded steel plates, its cost is lower, it has good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. The airtight layer 3 has a short construction period, and its components can be prefabricated. Compared with the disadvantage of traditional steel plate lining requiring on-site welding, it can save a lot of construction time and has a lower cost. During maintenance, damaged parts can be directly replaced.

[0036] The airtight layer 3 is made of a material that can deform under pressure. In this case, the deformable property of the airtight layer 3 under pressure can be used to make the fit between the base plate frame and the airtight layer 3 more stable.

[0037] The airtight layer 3 has an edge with a fitting part that engages with the semi-open accommodating space clamp, and the airtight layer 3 is mounted on the tripod base plate frame through the fitting part. In this embodiment, the fitting part can be a protrusion adapted to the semi-open accommodating space clamp, which can improve the compatibility between the airtight layer 3 and the tripod base plate frame.

[0038] The tripod base plate frame comprises multiple components. These multiple tripod base plate frames are arranged in a crisscross pattern, forming openings between them. The airtight layer 3 is positioned within these openings through a clamp with a semi-open accommodating space. In this configuration, the airtight layer 3, positioned within the openings between the multiple tripod base plate frames, is interlocked with the tripod base plate frames from multiple angles, preventing displacement within the openings and further ensuring the airtightness of the resulting sealed lining structure.

[0039] The sealed inner lining structure is a sealed inner lining structure set on the inner wall of a cylinder. The tripod base plate frame includes multiple axial frames and multiple circumferential frames, which are connected in a crisscross pattern, forming openings between the multiple tripod base plate frames; the airtight layer 3 is set within the openings through a clamp with a semi-open accommodating space. In this case, the tripod base plate frame is equivalent to having multiple ribs, which can ensure its own strength. At the same time, the numerous openings between the tripod base plate frames can further ensure the airtightness of the sealed inner lining structure formed therein by setting the airtight layer 3 within them.

[0040] The structure comprises multiple axial and circumferential skeletons evenly arranged. In this configuration, the resulting sealed lining experiences uniform stress, extending the service life of the underground gas storage facility provided in this embodiment of the invention when installed.

[0041] underground gas storage The underground gas storage facility provided by the present invention includes a concrete lining layer 1 and a sealed inner lining structure provided by the present invention. The inner wall of the concrete lining layer 1 is cylindrical, and the sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer 1 by a fixed base plate 10 of a scaffold base plate frame.

[0042] The scaffold base plate frame provided in this embodiment of the invention can embed an airtight layer 3 within its semi-open accommodating space. Since the height of the semi-open accommodating space near the connecting part of the umbrella-shaped scaffold is greater than the height of the semi-open accommodating space near the open side of the umbrella-shaped scaffold, the outer edge of the bulk scaffold 11 can be fitted with the airtight layer 3, thus preventing displacement or detachment of the airtight layer 3 and ensuring airtightness. Therefore, it is formed inside the concrete lining layer 1 of the underground gas storage facility. Its construction period is shorter than that of welded steel plates, its cost is lower, it has good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. The airtight layer 3 has a short construction period, and its components can be prefabricated. Compared with the disadvantage of traditional steel plate lining requiring on-site welding, it can save a lot of construction time and has a lower cost. During maintenance, damaged parts can be directly replaced.

[0043] Construction methods for underground gas storage facilities The construction method for the underground gas storage facility provided by this invention includes the following steps: Based on the inner diameter of the underground gas storage facility, assemble the scaffold base plate frame. The scaffold base plate frame includes multiple axial frames and multiple circumferential frames. The multiple axial frames and multiple circumferential frames are connected in a crisscross pattern, forming a hollow space between the multiple scaffold base plate frames. The scaffold base plate frame is laid to the inner wall of the underground gas storage facility, and the scaffold base plate frame is fixed to the inner wall of the underground gas storage facility. The airtight layer 3 is embedded in the hollow through a clamp with a semi-open accommodating space, so that the inner wall of the underground gas storage facility forms the sealed inner lining structure provided by the present invention.

[0044] The scaffold base plate frame provided in this embodiment of the invention can embed an airtight layer 3 within its semi-open accommodating space. Since the height of the semi-open accommodating space near the connecting part of the umbrella-shaped scaffold is greater than the height of the semi-open accommodating space near the open side of the umbrella-shaped scaffold, the outer edge of the bulk scaffold 11 can be fitted with the airtight layer 3, thus preventing displacement or detachment of the airtight layer 3 and ensuring airtightness. Therefore, it is formed inside the concrete lining layer 1 of the underground gas storage facility. Its construction period is shorter than that of welded steel plates, its cost is lower, it has good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. The airtight layer 3 has a short construction period, and its components can be prefabricated. Compared with the disadvantage of traditional steel plate lining requiring on-site welding, it can save a lot of construction time and has a lower cost. During maintenance, damaged parts can be directly replaced.

[0045] The process of laying the scaffold base plate frame onto the inner wall of the underground gas storage facility and fixing the scaffold base plate frame to the inner wall of the underground gas storage facility specifically includes the following steps: Drill the first type of connection hole on the inner wall of the underground gas storage facility; Adjust the position of the scaffold base plate frame so that the position of the second type of connection hole of the scaffold base plate frame corresponds to the position of the first type of connection hole on the inner wall of the underground gas storage facility; Screw the set bolts into the first type of connection hole and the second type of connection hole simultaneously to fix the base plate frame of the scaffold to the inner wall of the underground gas storage facility.

[0046] In this case, the sealing lining structure can be stably fixed to the inner wall of the concrete lining layer 1 of the underground gas storage through the first type of connection hole, the second type of connection hole, and the set bolt, and the cost is low.

[0047] The process includes the following steps after embedding the airtight layer 3 into the hollow space through a clamp with a semi-open accommodating space, thereby forming the sealed inner lining structure provided by the present invention on the inner wall of the underground gas storage facility: Conduct gas storage tests in underground gas storage facilities to determine their sealing performance; Real-time monitoring is conducted to identify potential gas leak points in underground gas storage facilities.

[0048] In this situation, by monitoring potential gas leaks in underground gas storage facilities in real time, any leaks can be detected and remedied promptly.

[0049] In the process of real-time monitoring of potential leak points in the underground gas storage facility, possible leak points include: the connection between the airtight layer 3 and the scaffold base plate frame; the connection between the scaffold base plate frame and the umbrella-shaped part; the connection between the fixed base of the scaffold base plate frame and the inner wall of the underground gas storage facility; and one or more locations within the airtight layer 3 itself. This allows for precise real-time monitoring of potential leak points in the underground gas storage facility.

[0050] The real-time monitoring of potential gas leaks in underground gas storage facilities includes the following steps: At potential gas leak locations in the underground gas storage facility, gas flow monitoring instruments should be installed, and a location label should be set for each gas flow monitoring instrument. Set alarm thresholds for the gas flow monitoring instrument based on its location; When an abnormal gas flow alarm is detected, the location of the leak in the underground gas storage facility is determined based on the location label of the gas flow monitoring instrument that triggered the alarm.

[0051] In this scenario, once a potential leak occurs in the underground gas storage facility, the leak location can be accurately determined based on the alarm information and the location label of the gas flow monitoring instrument, allowing for emergency repair measures to be taken.

[0052] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0053] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A sealing liner structure, characterized in that, Includes an airtight layer (3) and at least one scaffold base plate frame, The tripod base plate frame includes a fixed base plate (10) and umbrella-shaped tripods (11). The fixed base plate (10) has a length direction and a width direction. The umbrella-shaped leg (11) has a length direction and a width direction. The umbrella-shaped leg (11) is provided with a connecting part and an umbrella-shaped part. The umbrella-shaped part is disposed on the top of the connecting part, such that the umbrella-shaped part has protrusions on both sides of the umbrella-shaped leg (11) in the length direction toward the connecting part. The umbrella-shaped leg (11) is fixedly connected to the fixed base plate (10) along the length direction of the fixed base plate (10) by means of its connecting part, so that the umbrella-shaped part of the umbrella-shaped leg (11) and the fixed base plate (10) form a clamp with a semi-open accommodating space, and the height of the semi-open accommodating space near the connecting part of the umbrella-shaped leg (11) is h1, and the height of the semi-open accommodating space near the open side of the umbrella-shaped leg (11) is h2, h1>h2; The airtight layer (3) is set on the base plate frame of the leg through the clamp with a semi-open accommodating space; the airtight layer (3) is made of a pressure-deformable material.

2. The sealing liner structure according to claim 1, characterized in that, The connecting part and the umbrella-shaped part of the umbrella-shaped leg (11) are integrally formed.

3. The sealing liner structure according to claim 1, characterized in that, The umbrella-shaped leg (11) is fixedly connected to the fixed base plate (10) by fastening bolts, or the umbrella-shaped leg (11) and the fixed base plate (10) are integrally formed.

4. The sealing liner structure according to claim 1, characterized in that, The tripod base plate frame is made of corrosion-resistant steel.

5. The sealing liner structure according to claim 1, characterized in that, The edge of the airtight layer (3) is provided with a fitting part that fits into the semi-open accommodating space clamp, and the airtight layer (3) is set on the base plate frame of the leg through the fitting part.

6. The sealing liner structure according to claim 1, characterized in that, The tripod base plate frame includes multiple components. Multiple tripod base plate frames are arranged in a crisscross pattern, forming a hollow space between them; The airtight layer (3) is set in the hollow through the clamp with the semi-open accommodating space.

7. The sealing liner structure according to claim 1, characterized in that, The sealing liner structure is a sealing liner structure disposed on the inner wall of a cylindrical shape. The tripod base plate frame includes multiple axial frames and multiple circumferential frames. The multiple axial frames and multiple circumferential frames are connected in a crisscross pattern, forming a hollow space between the multiple tripod base plate frames. The airtight layer (3) is set in the hollow through the clamp with the semi-open accommodating space.

8. The sealing liner structure according to claim 7, characterized in that, The multiple axial skeletons and multiple circumferential skeletons are evenly arranged.

9. An underground gas storage facility, characterized in that, Includes a concrete lining layer (1) and a sealed inner lining structure as described in any of claims 1-8. The inner wall of the concrete lining layer (1) is cylindrical. The sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer (1) by the fixed base plate (10) of the scaffold base plate frame.

10. A construction method for an underground gas storage facility, characterized in that, Includes the following steps: According to the inner diameter of the underground gas storage, assemble the scaffold base plate frame. The scaffold base plate frame includes multiple axial frames and multiple circumferential frames. The multiple axial frames and multiple circumferential frames are connected in a crisscross pattern, forming a hollow between the multiple scaffold base plate frames. The scaffold base plate frame is laid to the inner wall of the underground gas storage facility, and the scaffold base plate frame is fixed to the inner wall of the underground gas storage facility. The airtight layer (3) is embedded in the hollow through the semi-open accommodating space clamp, so that the inner wall of the underground gas storage tank forms a sealed inner lining structure as described in any one of claims 1-8.

11. The construction method of the underground gas storage facility according to claim 10, characterized in that, Laying the scaffold base plate frame onto the inner wall of the underground gas storage facility, and fixing the scaffold base plate frame to the inner wall of the underground gas storage facility specifically includes the following steps: A first type of connection hole is drilled in the inner wall of the underground gas storage facility; Adjust the position of the scaffold base plate frame so that the second type of connection hole of the scaffold base plate frame corresponds to the position of the first type of connection hole on the inner wall of the underground gas storage tank; The set bolts are simultaneously screwed into the first type of connection hole and the second type of connection hole, so that the base plate frame of the scaffold is fixed to the inner wall of the underground gas storage.

12. The construction method of the underground gas storage facility according to claim 10, characterized in that, After the step of embedding the airtight layer (3) into the hollow through the semi-open accommodating space clamp, so that the inner wall of the underground gas storage forms the sealed inner lining structure as described in any of claims 1-8, the method further includes the following steps: A gas storage test was conducted on the underground gas storage facility to determine its sealing performance. Real-time monitoring is conducted on potential gas leak locations in the underground gas storage facility.

13. The construction method of the underground gas storage facility according to claim 12, characterized in that, In the process of real-time monitoring of possible leak points in the underground gas storage, the possible leak points include: the connection between the airtight layer (3) and the scaffold base plate frame, the connection between the connection part of the scaffold base plate frame and the umbrella-shaped part, the connection between the fixed base plate (10) of the scaffold base plate frame and the inner wall of the underground gas storage, and one or more of the parts of the airtight layer (3) itself.

14. The construction method of the underground gas storage facility according to claim 12, characterized in that, Real-time monitoring of potential leak points in the underground gas storage facility includes the following steps: Gas flow monitoring instruments are installed at potential leak points in the underground gas storage facility, and location tags are assigned to each gas flow monitoring instrument. An alarm threshold is set for the gas flow monitoring instrument based on its location. When an abnormal gas flow alarm is detected, the location of the leak in the underground gas storage facility is determined based on the location label of the gas flow monitoring instrument that triggered the alarm.

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