Joint structure of sealing layer of gas storage chamber, sealing layer and gas storage chamber

Abstract

The invention relates to the technical field of gas storage chamber sealing, in particular to a connector structure of a gas storage chamber sealing layer, the sealing layer and a gas storage chamber, the connector structure comprises two connecting plates arranged oppositely and fasteners installed on the two connecting plates, the two connecting plates are connected with the sealing layer in a sealed mode, and the two connecting plates are connected with the sealing layer in a sealed mode. A first sealing piece and a second sealing piece which are in butt joint are arranged between the two connecting plates, and the fastening piece penetrates through the two connecting plates and the first sealing piece to clamp the first sealing piece and the second sealing piece between the two connecting plates. The sealing joint structure can be arranged at the seam of the chamber sealing layer, the first sealing piece and the second sealing piece are arranged between the connecting plates, and the second sealing piece and the first sealing piece can jointly fill the gap between the two connecting plates; and the first sealing piece and the second sealing piece are clamped between the connecting plates through the fasteners, so that the sealing effect can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of gas storage chamber sealing, and in particular to a joint structure of a gas storage chamber sealing layer, a sealing layer and a gas storage chamber. Background Art

[0002] Artificial gas storage chambers are highly safe, flexible in site selection, and have excellent durability and reasonable economy. Therefore, most compressed air energy storage projects currently under construction and planned for filing use artificial gas storage chambers. Usually, the structure of a gas storage chamber can be a sealing layer, a sliding layer, a concrete lining layer, and a surrounding rock layer from the inner cavity of the chamber to the outside. The lining layer and the surrounding rock layer are the main bodies that bear the load, and the sealing layer mainly bears the sealing function. Existing sealing layers are usually rigid integral structures, such as steel linings. When subjected to internal pressure, the steel lining will deform and expand along the radial direction of the chamber. Under the long-term effect of the constantly changing internal pressure caused by repeated inflation and deflation of the chamber, the steel lining material will crack or break due to fatigue, which will seriously affect the sealing performance of the steel lining and may even cause the sealing of the steel lining to fail, thereby causing a gas leakage accident in the gas storage chamber. Therefore, the material of the sealing layer can be a corrugated steel plate with higher rigidity and better stability. However, corrugated steel can only be installed in sections as a sealing layer. How to ensure the sealing performance of the joints of each section of corrugated steel has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The purpose of the present invention is to overcome the technical problem in the prior art that it is difficult to ensure the sealing performance of the joints of the corrugated steel as the chamber sealing layer under pressure, and to provide a joint structure of the gas storage chamber sealing layer, a sealing layer and a gas storage chamber.

[0004] In a first aspect, the present invention provides a joint structure of a gas storage chamber sealing layer, comprising two connecting plates arranged opposite to each other and fasteners installed on the two connecting plates, the two connecting plates being sealed and connected to the sealing layer respectively, a first butt seal and a second butt seal being arranged between the two connecting plates, the fasteners passing through the two connecting plates and the first seal to clamp the first seal and the second seal between the two connecting plates.

[0005] The sealing joint structure of the present application can be set at the joint of the chamber sealing layer. The sealing effect can be achieved by setting the first seal and the second seal between the connecting plates, and clamping the first seal and the second seal between the connecting plates by fasteners. For example, the connecting plate can be the end plate at the joint of the sealing layer, the first seal can be a caulking rubber plate, the second seal can be a sealant, the fastener can be a high-strength bolt, the caulking rubber plate can be compressed and clamped between the end plates of the sealing layer by the fastening force provided by the high-strength bolt, even if the sealing layer is tensioned at the joint after being subjected to internal pressure, the fastener can provide sufficient fastening force to compress the first seal to ensure sealing. The second seal can fill the gap between the two connecting plates together with the first seal. For example, the first seal can be set at a position between the two connecting plates close to the sealing layer, and the second seal can be set at a position between the two connecting plates away from the sealing layer, that is, the second seal can be sealed at the opening between the two connecting plates to improve the sealing performance.

[0006] Preferably, the second sealing member comprises an integrally formed body and a flange, the body being arranged between the two connecting plates, and the flange covering end surfaces of the two connecting plates.

[0007] The structure of the second seal body and flange combination can form an inverted "T"-shaped structure, so that the second seal can fill in the space between the two connecting plates while covering the end surface of the connecting plate, which can extend the size of the sealing surface between the second seal and the connecting plate and further improve the sealing effect.

[0008] Preferably, the two connecting plates are provided with sealing grooves, and the sealing grooves are connected to the two connecting plates via the fasteners.

[0009] A sealing groove can be provided on the outer side of the two connecting plates to seal the openings between the connecting plates and the joints with the seals, and then the sealing groove, the connecting plates and the seals can be clamped together by the fastening action of fasteners to improve the sealing performance; specifically, the sealing groove can be in a specific form such as channel steel.

[0010] Preferably, a third sealing member is filled between the connecting plate and the sealing groove.

[0011] The joint between the sealing groove and the connecting plate can be filled with a third sealing member for sealing, thereby enhancing the sealing performance. Specifically, the third sealing member can be a polymer rubber, or an airtight coating, etc.

[0012] Preferably, the third sealing member is in contact with the end surface of the second sealing member and extends to the surfaces of the two connecting plates.

[0013] The third sealing member may cover the end surface of the second sealing member and extend to the surface of the connecting plate, thereby further enhancing the sealing performance by extending the size of the sealing surface.

[0014] Preferably, the third sealing member extends from a surface of the connecting plate to a surface of the sealing layer.

[0015] The third sealing member may further extend from the surface of the connecting plate to the surface of the sealing layer, thereby lengthening the size of the sealing surface to enhance the sealing performance.

[0016] In a second aspect, the present invention provides a sealing layer of a gas storage chamber, comprising a plurality of corrugated steel plates and a joint structure of the gas storage chamber sealing layer as described above, wherein the joint structure of the gas storage chamber sealing layer is arranged along the joints between the plurality of corrugated steel plates.

[0017] The joint structure of the present application can be used for the corrugated steel plate sealing layer. The corrugated steel plate has a stronger pressure-bearing capacity than ordinary steel linings and has better stability when under pressure. The use of the joint structure of the present application can ensure better sealing performance and sealing effect.

[0018] Preferably, a plurality of the corrugated steel plates are butt-jointedly arranged along the axial direction and the circumferential direction of the gas storage chamber.

[0019] The corrugated steel plates are arranged in sections in the axial and circumferential directions of the chamber, and the joint structure of the present application can be arranged at the joints in different directions.

[0020] In a third aspect, the present invention provides a gas storage chamber, comprising a surrounding rock layer, a concrete lining layer and a sealing layer of the gas storage chamber as described above, which are arranged in sequence from the outside to the inside.

[0021] Preferably, a sliding layer is provided between the concrete lining layer and the sealing layer of the gas storage chamber.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention provides a joint structure of a gas storage chamber sealing layer. The sealing joint structure of the present application can be arranged at the joint of the chamber sealing layer. The sealing effect can be achieved by arranging a first seal and a second seal between the connecting plates, and clamping the first seal and the second seal between the connecting plates by a fastener. For example, the connecting plate can be an end plate at the joint of the sealing layer, the first seal can be a caulking rubber plate, the second seal can be a sealant, the fastener can be a high-strength bolt, the caulking rubber plate can be compressed and clamped between the end plates of the sealing layer by the fastening force provided by the high-strength bolt, even if the sealing layer is tensioned at the joint after being subjected to internal pressure, the fastener can also provide sufficient fastening force to compress the first seal to ensure sealing. The second seal can fill the gap between the two connecting plates together with the first seal. For example, the first seal can be arranged at a position close to the sealing layer between the two connecting plates, and the second seal can be arranged at a position far away from the sealing layer between the two connecting plates, that is, the second seal can be sealed at the opening between the two connecting plates to improve the sealing performance. The use of the sealing layer and the joint structure thereof of the present invention can increase the stability of the sealing structure and ensure the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the joint structure at the circumferential joint of the sealing layer of the gas storage chamber.

[0025] Figure 2 It is a schematic diagram of the joint structure at the axial joint of the sealing layer of the gas storage chamber.

[0026] Figure 3 This is the overall structural diagram of the gas storage chamber.

[0027] Markings in the figure:

[0028] 1. Joint structure, 11. Connecting plate, 12. Fastener, 13. First seal, 14. Second seal, 141. Main body, 142. Flange, 15. Third seal, 16. Sealing groove, 2. Sealing layer, 3. Sliding layer, 4. Concrete lining layer, 5. Surrounding rock layer. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0030] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0032] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0033] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0034] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0035] Example 1

[0036] This embodiment provides a joint structure of a gas storage chamber sealing layer.

[0037] Figure 1 It is a schematic diagram of the joint structure at the annular joint of the gas storage chamber sealing layer; Figure 2 It is a schematic diagram of the joint structure at the axial joint of the sealing layer of the gas storage chamber; Figure 3 This is the overall structural diagram of the gas storage chamber.

[0038] like Figures 1 to 3 As shown in , the joint structure of the gas storage chamber sealing layer described in this embodiment includes two connecting plates 11 and a plurality of fasteners 12 arranged opposite to each other, a first seal 13 and a second seal 14 are arranged between adjacent connecting plates 11, and a plurality of fasteners 12 are arranged on the connecting plates 11 and penetrate the connecting plates 11. The first seal 13 and the second seal 14 are arranged between the connecting plates 11, and the fastener 12 can penetrate the connecting plates 11 and the first seal 13 at the same time, provide clamping force for the plurality of connecting plates 11, and clamp the first seal 13 and the second seal 14 between the connecting plates 11 to achieve a sealing effect.

[0039] The sealing joint structure 1 of the present application can be set at the joint of the chamber sealing layer 2. The sealing effect can be achieved by setting the first seal 13 and the second seal 14 between the connecting plates 11 and clamping the first seal 13 and the second seal 14 between the connecting plates 11 through the fastener 12. For example, the connecting plate 11 can be an end plate at the joint of the sealing layer 2, the first seal 13 can be a caulking rubber plate, the fastener 12 can be a high-strength bolt, and the second seal 14 can be a sealant. The caulking rubber plate can be compressed and clamped between the end plates of the sealing layer 2 with the fastening force provided by the high-strength bolts. Even if the sealing layer 2 is tensioned at the joint after being subjected to internal pressure, the fastener 12 can provide sufficient fastening force to compress the first seal 13 to ensure sealing.

[0040] In this embodiment, the second sealing member 14 may include an integrally formed body 141 and a flange 142 , wherein the body 141 is disposed between the two connecting plates 11 , and the flange 142 covers the end surfaces of the two connecting plates 11 .

[0041] The structure of the body 141 and the flange 142 of the second seal 14 can form a structure similar to an inverted "T" shape, so that the second seal 14 can fill between the two connecting plates 11 and cover the end surface of the connecting plate 11, and the size of the sealing surface between the second seal 14 and the connecting plate 11 can be extended, and the sealing effect can be further improved. Specifically, the second seal 14 and the first seal 13 can be connected by welding, or by integral molding or bonding. The present invention does not limit the specific connection method.

[0042] The second seal 14 may be a sealant, and the sealant and the first seal 13 may fill the gap between the two connecting plates 11 together. For example, the first seal 13 may be disposed between the two connecting plates 11 at a position close to the sealing layer 2, and the second seal 14 may be disposed between the two connecting plates 11 at a position away from the sealing layer 2, that is, the second seal 14 may be sealed at the opening between the two connecting plates 11 to improve the sealing performance. The second seal 14 may be made of the same material as the first seal 13, or may be different. For example, the first seal 13 may be a caulking rubber sheet, and the second seal 14 may be a sealant. The specific composition of the sealant may be butyl rubber or EPDM rubber. The present invention does not limit the specific material of the seal.

[0043] Optionally, the second sealing member 14 may cover the end surface of the connecting plate 11; the second sealing member 14 may extend from between the two connecting plates 11 and cover the end surface of the connecting plate 11, and the sealing surface may be extended to further enhance the sealing effect. Figure 1 In the joint structure 1 at the annular joint shown in FIG, the second seal 14 not only fills between the two connecting plates 11, but also covers the outer end of the connecting plate 11, so that the overall cross-sectional configuration of the second seal 14 is "T"-shaped; Figure 2 In the joint structure 1 at the axial joint shown in the figure, the second seal 14 is only filled between the two connecting plates 11, and does not cover the outer end of the connecting plate 11. Therefore, the configuration and setting position of the second seal 14 can be adaptively selected, and the present invention does not make specific limitations on this.

[0044] In this embodiment, multiple connection plates 11 are provided with sealing grooves 16, and the fasteners 12 penetrate the sealing grooves 16. The sealing grooves 16 can be provided on the outer sides of the multiple connection plates 11 to seal the openings between the connection plates 11 and the joints with the seals, and then the sealing grooves 16, the connection plates 11, and the seals are clamped together by the fastening action of the fasteners 12, so as to improve the sealing performance; specifically, the sealing grooves 16 can be channel steel. The channel steel is provided on the outer side of the connection plate 11, and the notch is facing outward to wrap the connection plate 11 structure and the second seal 14, so as to prevent the second seal 14 from falling off under repeated pressure fluctuations and destroying the sealing performance of the structure.

[0045] In this embodiment, the gap between the connecting plate 11 and the sealing groove 16 is filled with a third sealing member 15. The joint between the sealing groove 16 and the connecting plate 11 can be filled with the third sealing member 15 for sealing, thereby enhancing the sealing performance. Specifically, the third sealing member 15 can be a polymer rubber or an airtight coating. The third sealing member 15 is filled between the connecting plate 11 and the sealing groove 16, which can further improve the sealing performance of the joint. The fastener 12 can be a high-strength bolt, which is used to connect and fasten the two connecting plates 11 to prevent the joint from loosening under the action of pressure fluctuations.

[0046] Optionally, the third seal 15 fits the end face of the second seal 14 and extends to the surfaces of the two connecting plates 11; the third seal 15 can cover the end face of the second seal 14 and extend to the surface of the connecting plate 11, and the sealing performance can be further enhanced by extending the size of the sealing surface.

[0047] Optionally, the third sealing member 15 extends from the surface of the connecting plate 11 to the surface of the sealing layer 2; the third sealing member 15 can further extend from the surface of the connecting plate 11 to the surface of the sealing layer 2, extending the size of the sealing surface 2 to enhance the sealing performance. The sealing performance can be further enhanced by extending the size of the sealing surface; the cross-sectional shape of the third sealing member 15 can be an "inverted Ω shape".

[0048] Example 2

[0049] This embodiment provides a sealing layer 2 of a gas storage chamber.

[0050] The sealing layer 2 of the gas storage chamber described in this embodiment includes multiple sections of corrugated steel plates and the joint structure of the sealing layer of the gas storage chamber described in Example 1.

[0051] The joint structure 1 of the present application can be used for the corrugated steel plate sealing layer 2. The corrugated steel plate has a stronger pressure-bearing capacity than ordinary steel linings and has better stability when under pressure. The use of the joint structure 1 of the present application can ensure better sealing performance and sealing effect.

[0052] In this embodiment, multiple sections of corrugated steel plates can be butt-jointedly arranged along the axial and circumferential directions of the gas storage chamber, and the joint structure of the gas storage chamber sealing layer can be arranged along the joints between the multiple sections of corrugated steel plates. The corrugated steel plates are arranged in sections in the axial and circumferential directions of the chamber, and the joint structure 1 of the present application can be arranged at the joints in different directions; for example, Figure 1 The joint structure 1 at the circumferential joint is shown in FIG. Figure 2 Shown in FIG. 1 is the joint structure 1 at the axial joint.

[0053] It should be noted that Figure 1The fastener 12, the sealing groove 16 and the third sealing member 15 on the joint structure 1 at the annular joint shown in the figure can be arranged at any position in the annular direction. Figure 2 The fasteners 12, sealing grooves 16 and third seals 15 on the joint structure 1 at the axial joint shown in the figure are only arranged on the side of the corrugated steel plate facing the chamber, that is, for the corrugated steel plate at the top of the chamber, the fasteners 12, sealing grooves 16 and third seals 15 on the joint structure 1 at the axial joint are only arranged at the crests of the corrugated steel plate, while the connecting plate 11, the first seal 13 and the second seal 14 at the trough are located inside the concrete lining.

[0054] The joint structure of the gas storage chamber sealing layer described in this embodiment is consistent with the joint structure of the gas storage chamber sealing layer described in Example 1, and this embodiment will not be further described in detail.

[0055] Example 3

[0056] This embodiment provides a gas storage chamber.

[0057] The gas storage chamber described in this embodiment may include a surrounding rock layer 5, a concrete lining layer 4 and a sealing layer 2 of the gas storage chamber as described in Example 2, which are arranged in sequence from the outside to the inside.

[0058] Optionally, a sliding layer 3 is further provided between the concrete lining layer 4 and the sealing layer 2 of the gas storage chamber.

[0059] The sealing layer 2 of the gas storage chamber described in this embodiment is consistent with the sealing layer 2 of the gas storage chamber described in Example 2, and this embodiment will not be described in detail.

[0060] In summary, the present invention provides a joint structure of a gas storage chamber sealing layer. The sealing joint structure of the present application can be arranged at the joint of the chamber sealing layer. The sealing effect can be achieved by arranging a first seal between the connecting plates and clamping the first seal between the connecting plates through a fastener. For example, the connecting plate can be an end plate at the joint of the sealing layer, the first seal can be a caulking rubber plate, the fastener can be a high-strength bolt, and the caulking rubber plate can be compressed and clamped between the end plates of the sealing layer with the fastening force provided by the high-strength bolt. Even if the sealing layer is tensioned at the joint after being compressed, the fastener can provide sufficient fastening force to compress the first seal to ensure sealing.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A joint structure of a gas storage chamber sealing layer, characterized in that: The invention comprises two connecting plates (11) arranged opposite to each other and fasteners (12) mounted on the two connecting plates (11); the two connecting plates (11) are respectively sealed and connected to a sealing layer (2); a first sealing member (13) and a second sealing member (14) are butt-jointed between the two connecting plates (11); and the fastener (12) passes through the two connecting plates (11) and the first sealing member (13) to clamp the first sealing member (13) and the second sealing member (14) between the two connecting plates (11).

2. The joint structure of the gas storage chamber sealing layer according to claim 1, characterized in that: The second sealing member (14) comprises an integrally formed body and a flange, the body being arranged between the two connecting plates (11), and the flange covering the end surfaces of the two connecting plates (11).

3. The joint structure of the gas storage chamber sealing layer according to any one of claim 2, characterized in that: The two connecting plates (11) are sleeved with sealing grooves (16), and the sealing grooves (16) are connected to the two connecting plates (11) via the fasteners (12).

4. The joint structure of the gas storage chamber sealing layer according to claim 3, characterized in that: A third sealing member (15) is filled between the connecting plate (11) and the sealing groove (16).

5. The joint structure of the gas storage chamber sealing layer according to claim 4, characterized in that: The third sealing member (15) is in contact with the end surface of the second sealing member (14) and extends to the surfaces of the two connecting plates (11).

6. The joint structure of the gas storage chamber sealing layer according to claim 5, characterized in that: The third sealing member (15) extends from the surface of the connecting plate (11) to the surface of the sealing layer (2).

7. A sealing layer of a gas storage chamber, characterized in that: It comprises a plurality of corrugated steel plates and a joint structure of a gas storage chamber sealing layer as claimed in any one of claims 1 to 6, wherein the joint structure of the gas storage chamber sealing layer is arranged along the joints between the plurality of corrugated steel plates.

8. The sealing layer of the gas storage chamber according to claim 7, characterized in that: A plurality of the corrugated steel plates are butt-jointedly arranged along the axial direction and the circumferential direction of the gas storage chamber.

9. A gas storage chamber, characterized in that: It comprises a surrounding rock layer (5), a concrete lining layer (4) and a sealing layer (2) of the gas storage chamber as claimed in claim 7 or 8, which are arranged in sequence from the outside to the inside.

10. The gas storage chamber according to claim 9, characterized in that: A sliding layer (3) is provided between the concrete lining layer (4) and the sealing layer (2) of the gas storage chamber.

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