Sealing joint structure of gas storage chamber splicing lining, lining structure and chamber

Abstract

The invention relates to the field of compressed air energy storage chamber structures, in particular to a sealing joint structure of a gas storage chamber assembly lining, a lining structure and a chamber, the sealing joint structure comprises buckles, a connecting fitting, a belleville spring and two lining folded edges, grooves are formed in the two buckles, the two buckles are in butt joint to enable the two grooves to be in butt joint to form a mounting groove, and the two lining folded edges are in butt joint with the connecting fitting. The two lining folded edges are oppositely arranged in the mounting groove; first sealing pieces are arranged on the inner walls of the two opposite grooves, and the first sealing pieces are filled between the folded edges of the lining and the grooves; and the two buckling pieces are connected through a fastening assembly. By means of the sealing joint structure, steel plate splicing construction can be achieved, steel plate curled edges are installed and fixed in place in a blocking mode, and the blocking steel plates can be connected into a sealed inner container whole through fasteners adopted by joints. Compared with a traditional connecting mode, when the chamber is inflated and expanded, the block steel plates are pulled open, the steel plates and the fasteners can tightly press the rubber, air leakage is avoided, and the sealing performance of the joints of the block steel plates is guaranteed through the fastener bolts and the rubber.

Description

Technical Field

[0001] The invention relates to the field of compressed air energy storage chamber structures, and in particular to a sealing joint structure of an assembled liner of an air storage chamber, a liner structure and a 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. Conventional gas storage chamber sealing structures mostly adopt steel plate welding. The welding construction time of sealing steel plates is long, the efficiency is low, and the quality of welds is difficult to guarantee. In addition, the sealing steel plates will deform and expand along the radial direction of the chamber when subjected to internal pressure. During the operation of the gas storage chamber, the gas will be cyclically charged and discharged, and the internal pressure of the chamber will show cyclic changes. The steel plates and welds need to adapt to the expansion and deformation under the high-pressure inflation conditions, and the shrinkage under the deflation conditions. Defects and hidden scratches in the welds or steel plates may cause fatigue cracking of the material, resulting in sealing failure and then gas leakage accidents. Therefore, it is urgent to improve the connection structure and connection method of the sealing steel plate joints to solve the technical problems of insufficient sealing performance and low efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the technical problems of the prior art of welding the sealing steel plate joints of the gas storage chamber, which is difficult to meet the airtightness requirements and has low construction efficiency, and to provide a sealing joint structure, a lining structure and a chamber for assembling the lining of the gas storage chamber.

[0004] In a first aspect, the present invention provides a sealing joint structure for an assembled liner of a gas storage chamber, comprising two clips and two liner folded edges, wherein grooves are provided on the two clips, the two clips can be butted together and the two grooves can be butted together to form an installation groove, and the two liner folded edges are arranged opposite to each other in the installation groove; a first seal is provided on the inner walls of the two opposite grooves, and the first seal is used to fill the gap between the liner folded edge and the groove; the two clips are connected by a fastening assembly.

[0005] The lining fold is a folded edge structure obtained by bending the edge of the lining. In addition, the lining fold can also be replaced by a local protrusion of the steel plate or a welding structure. Other structures that can form a tight fit with the fastener can be used as steel plate edge structures. In the present application, at the joint position between the two liners, the folding structure of the two adjacent liners is used to make them correspond to the groove structure on the snap-on component, and the two snap-ons are butted and connected by fasteners to form an installation groove, and the folding edge of the liner can be inserted into the installation groove and fixed by utilizing the matching relationship between the folding edge of the liner and the installation groove. In addition, a first sealing component is arranged on the groove surface of the groove, and the first sealing component can fill the gap between the folding edge and the groove on both sides, and can also cover the joint between the two snap-ons for sealing. Even if the two liners move away from each other under the action of internal pressure, or even separate the two snap-ons from each other, the gap between the liners, the gap between the folding edge and the groove, and the gap between the two snap-ons can all be sealed by utilizing the first sealing component. The sealing surface size of the sealing joint structure is longer than that of the welding surface, and the sealing effect is better. Moreover, the sealing joint structure is a detachable assembly structure, and can be directly installed by utilizing its structural features and fastened by a fastening component. Compared with welding construction and ensuring the quality of the weld, its construction efficiency is higher. Here, the fastening component may be selected as a detachable fastening component or a fixed and non-detachable fastening component.

[0006] The sealing of the lining at the joint position can be achieved by setting the sealing parts and the snap fasteners. In the initial state, the rubber and the steel plate can be initially compressed by the elastic parts to achieve sealing; under the action of internal pressure expansion, the displacement of the lining steel plate is limited by the snap fasteners, so that the lining steel plate and the sealing parts are compressed. The greater the internal pressure, the better the sealing performance between the sealing parts and the lining steel plate, thereby achieving sealing under high pressure. The existing method of using steel plate welding, that is, sealing is achieved by welding at the joint position of the lining steel plate, which has high airtightness requirements, and the workload and difficulty of welding construction and airtightness testing are large.

[0007] Through the seal and the buckle, the deformation capacity of the seal can be fully utilized to adapt to the expansion and deformation of the gas storage chamber during inflation. Compared with the steel plate welding method, which only relies on the deformation capacity of the steel plate itself to adapt to the expansion and deformation of the gas storage chamber under inflation conditions, the buckle and seal connection method is better.

[0008] The assembled lining is connected with the snap-fit ​​joints. The snap-fit ​​joints can be pre-processed in the factory. After the assembly and positioning in the chamber are completed, the steel lining only needs to be bent to form a folded edge. The process is simple. The construction of the seal only requires grinding and fixing and then tightening. The construction difficulty is small, it is more adaptable to the on-site environment, and the construction efficiency is high.

[0009] Preferably, the fastening assembly includes a screw, two nuts and a plurality of elastic parts, the screw is inserted into the two clips, the two nuts are sleeved on the screw and located on both sides of the clips, and the plurality of elastic parts are sleeved on the screw and respectively located between the two nuts and the clips.

[0010] The fastening assembly can be connected by a screw and a nut. In addition, an elastic member can be arranged on the screw to provide a certain movement margin for the snap member. When the internal pressure of the liner exceeds a certain threshold, the two liners can be allowed to move in opposite directions, so that the two liner folds drive the two snap members to compress the elastic members and separate them, so that the sealing joint structure can undergo adaptive deformation, thereby avoiding strain concentration on the liner and causing damage to the liner. The first seal can also be used to maintain the seal during the deformation process; when the two snap members move in opposite directions under the action of the internal pressure, the snap members can compress the elastic member, and the elastic member will apply a reaction force to the snap members, which can prompt the snap members to further compress the first seal between the groove and the liner fold, thereby further enhancing the sealing performance between the snap members and the liner fold.

[0011] Preferably, the first sealing member extends from a gap between the lining fold and the groove to a gap between the lining and the buckle.

[0012] The size of the first sealing member can be increased so that it extends from the groove to outside the groove, filling the gap between the liner and the snap member, thereby extending the sealing surface size of the first sealing member and improving the sealing effect.

[0013] Preferably, the first sealing member is provided with a plurality of through holes, the axial directions of the plurality of through holes are consistent with the length direction of the lining seam, and the plurality of through holes are located in a portion of the first sealing member between the groove and the lining folded edge.

[0014] A through hole is opened on the first seal between the groove and the lining folded edge, and the axial direction of the through hole is consistent with the length direction of the lining seam, that is, the through hole is perpendicular to the compression direction of the first seal. When the first seal is compressed under the movement of the two snap parts, the through hole can increase the compression amount of the first seal, while improving the sealing performance between the groove and the lining folded edge, further improving the overall deformation amount of the sealing joint structure, thereby improving the internal pressure bearing range of the sealing joint structure.

[0015] Preferably, a second sealing member is provided between the two lining folds, and the second sealing member is in close contact with the two lining folds.

[0016] Adding a second seal between the two lining folds can add a sealing measure on the basis of the first seal, thereby improving the overall sealing performance of the sealing joint structure. The second seal can prevent the gap between the lining folds on both sides from being too large, so that the seal is squeezed out of the gap or crushed. The second seal and the first seal can play a role in buffering deformation.

[0017] Preferably, the second sealing member is in close contact with the first sealing member.

[0018] Placing the second sealing member in close contact with the first sealing member can increase the size of the sealing surface and enhance the sealing performance.

[0019] In a second aspect, the present invention provides an assembled liner structure of a gas storage chamber, comprising a plurality of liners, wherein two adjacent liners are connected via a sealing joint structure of the assembled liner of the gas storage chamber as described above, and the liners are integrally connected to the liner folds.

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

[0021] Preferably, the secondary lining layer is provided with a plurality of slits along the circumferential direction of the chamber, the positions of the plurality of slits correspond one-to-one to the positions of the plurality of sealing joint structures, and the slits are filled with a third sealing member.

[0022] A joint is reserved on the secondary lining so that when the secondary lining is subjected to internal pressure, the deformation is concentrated at the joint, avoiding cracks and damage to the lining structure, and a third sealant is filled in the joint to ensure sealing. Here, the third sealant can be a polyurethane foam board, a wood composite board and other materials, which can expand after the joint is opened, maintain contact with the secondary lining, maintain sealing, and avoid groundwater outside the secondary lining from entering the joint and causing leakage.

[0023] Preferably, a sealing assembly is provided between the split seam and the corresponding sealing joint structure, and the sealing assembly comprises a sealant, a rigid pad and an elastic pad stacked in sequence from the outside to the inside.

[0024] A multi-layer sealing component can be further added at the opening of the split seam, and the sealant can enter the split seam after the split seam is opened to compensate for the gap caused by the deformation of the third seal. The rigid pad can be a steel pad, and the elastic pad can be a rubber plate. Arranging the rigid pad and the elastic pad can maintain the sealing performance at the split seam opening after the split seam is opened, and arranging the rigid pad above the elastic pad can prevent the elastic pad from being squeezed into the split seam after the split seam is opened, affecting the sealing effect.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a sealing joint structure for assembling inner liners of a gas storage chamber. A pair of folded edge structures of the inner liners are designed at the joint position between two inner liners, that is, at the edge of the inner liners, so that they correspond to the groove structure on the clip. After the two clips are docked and connected by fasteners, the folded edge of the inner liner can be inserted into the groove and fixed by utilizing the matching relationship between the folded edge of the inner liner and the groove. In addition, a first sealing member is arranged on the groove surface of the groove. The first sealing member can fill the gap between the folded edge and the groove on both sides, and can also cover the joint between the two clips for sealing. Even if the two liners move away from each other under the action of internal pressure, or even separate the two clips from each other, the gap between the liners, the gap between the folded edge and the groove, and the gap between the two clips can all be sealed by utilizing the first sealing member. The sealing surface size of the sealing joint structure is longer than that of the sealing surface size of the weld, and the sealing effect is better. Moreover, the sealing joint structure is a detachable assembly structure, and can be directly installed by utilizing its structural features and fastened by utilizing a fastening assembly. Compared with welding construction and ensuring the quality of the weld, the construction efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the sealing joint structure of the assembled liner of the gas storage chamber of the present invention before deformation.

[0028] Figure 2 It is a schematic diagram of the deformation of the sealing joint structure of the assembled liner of the gas storage chamber of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the gas storage chamber of the present invention.

[0030] Markings in the figure:

[0031] 1. Sealing joint structure, 11. Lining fold, 12. Fastener, 121. Groove, 13. First seal, 131. Through hole, 14. Fastening assembly, 141. Screw, 142. Nut, 143. Elastic member, 15. Second seal, 2. Lining, 3. Secondary lining layer, 31. Joint, 32. Third seal, 33. Sealant, 34. Rigid pad, 35. Elastic pad, 4. Initial support layer, 5. Surrounding rock layer. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] Example 1

[0039] This embodiment provides a sealing joint structure for assembling an inner liner of a gas storage chamber.

[0040] Figure 1 It is a schematic diagram of the sealing joint structure of the assembled liner of the gas storage chamber of the present invention before deformation; Figure 2 It is a schematic diagram of the deformation of the sealing joint structure of the assembled liner of the gas storage chamber of the present invention; Figure 3 It is a schematic structural diagram of the gas storage chamber of the present invention.

[0041] like Figures 1 to 3 As shown in the figure, the sealing joint structure of the gas storage chamber assembled liner described in this embodiment may include two clips 12 and two liner folded edges 11, the two liner folded edges 11 are arranged opposite to each other, and the two clips 12 are provided with grooves 121 corresponding to the liner folded edges 11. The two clips 12 can be connected to form a mounting groove by connecting the two grooves 121, and the liner folded edges 11 are clamped in the mounting groove; a first sealing member 13 is provided on the inner wall of the two opposite grooves 121, that is, in the mounting groove, and the first sealing member 13 is filled Fill the gap between the lining folded edge 11 and the groove 121; the two fasteners 12 are provided with a fastening assembly 14 for connecting the two fasteners 12; wherein, the lining folded edge 11 can be formed by bending the edge of the lining 2, that is, the lining folded edge 11 and the lining 2 are integrally connected; the lining folded edge 11 is snapped into the groove 121, similar to the principle of a hook, the fastener 12 can be hooked, and after the two fasteners 12 are docked and fixed, the two liners 2 hooked on the fasteners 12 are also fixed.

[0042] The present application designs a pair of folded edge structures of the lining 2 at the joint position between the two linings 2, that is, at the edge of the lining 2, so that it corresponds to the groove 121 structure on the buckle 12. After the two buckles 12 are docked and connected by fasteners, the lining folded edge 11 can be inserted into the groove 121 and fixed by the matching relationship between the lining folded edge 11 and the groove 121. In addition, a first sealing member 13 is arranged on the groove surface of the groove 121. The first sealing member 13 can fill the gap between the folded edges and the groove 121 on both sides, and can also cover the joint between the two buckles 12. Even if the two liners 2 are separated from each other under the action of internal pressure, or even the two clips 12 are separated from each other, the gaps between the liners 2, the gaps between the folded edges and the grooves 121, and the gaps between the two clips 12 can be sealed by the first seal 13. The sealing surface size of the sealing joint structure 1 is longer than the sealing surface size of the weld, and the sealing effect is better. The sealing joint structure 1 is a detachable assembly structure, which can be directly installed using its structural features and fastened by the fastening assembly 14. Compared with welding construction and ensuring the quality of the weld, its construction efficiency is higher. In addition to the structure of the liner folded edge 11, the liner folded edge 11 can also be replaced by a local protrusion of the steel plate or a welding structure. Other structures that can form a tight fit with the clips can be used as the steel plate edge structure of the liner 2.

[0043] In this embodiment, the fastening assembly 14 may include a screw 141, two nuts 142 and a plurality of elastic members 143. The screw 141 is inserted into the two clips 12, the two nuts 142 are sleeved on the screw 141 and are located on both sides of the clips 12, and the plurality of elastic members 143 are all sleeved on the screw 141 and are respectively located between the two nuts 142 and the clips 12; here, the screw 141 may pass through the two clips 12, and its two ends extend out to be located on both sides of the two clips 12, the elastic members 143 may be sleeved on the screw 141 at both ends of the screw 141, and then the nuts 142 are respectively screwed into the two ends of the screw 141 to fix the elastic member 143, so that one end of the elastic member 143 abuts against the clip 12, and the other end abuts against the nut 142. Specifically, the elastic member 143 can be a disc spring, and the number of disc springs installed between the snap member 12 and the nut 142 on one side can be multiple. Of course, the type of the elastic member 143 can also be other elastic structures such as a spring, and the number of elastic members 143 installed between the snap member 12 and the nut 142 can also be any other number, which can be selected according to actual needs, and the present invention does not make specific limitations on this.

[0044] The fastening assembly 14 can be connected by a screw 141 and a nut 142. In addition, an elastic member 143 can be arranged on the screw 141 to provide a certain movement margin for the snap member 12. When the internal pressure of the liner 2 exceeds a certain threshold, the two liners 2 can be allowed to move in the opposite direction, so that the two liner folds 11 drive the two snap members 12 to compress the elastic member 143 and separate them, so that the sealing joint structure 1 can undergo adaptive deformation to avoid strain concentration on the liner 2 and damage to the liner 2. The first sealing member 13 can also be used to maintain the seal during the deformation process; when the two snap members 12 move in the opposite direction under the action of the internal pressure, the snap member 12 can compress the elastic member 143, and the elastic member 143 will apply a reaction force to the snap member 12, which can prompt the snap member 12 to further compress the first sealing member 13 between the groove 121 and the liner fold 11, and further enhance the sealing performance between the snap member 12 and the liner fold 11.

[0045] In this embodiment, the first seal 13 can extend from the gap between the liner fold 11 and the groove 121 to the gap between the liner 2 and the buckle 12; the first seal 13 can cover the groove surface of the groove 121 of the two buckles 12 at the same time. The first seal 13 can be only set in the sealing joint structure 1, or it can cover the inner surface of the liner 2 as a whole. The size of the first seal 13 is not limited here. The first seal 13 can also seal the seam between the two buckles 12. When the two buckles 12 are separated under pressure, the spacing of the seam increases, and air pressure can enter the seam, but the first seal 13 can be sealed at the opening of the seam to maintain the sealing performance and prevent air pressure from leaking from the seam; through the elastic member 143, the first seal 13 and the liner fold 11 can always be pressed tightly to ensure the airtight effect.

[0046] Specifically, the first sealing member 13 can be a sealing rubber plate. In addition to covering the groove surface of the groove 121, the sealing rubber plate can also increase its size so that it extends out of the groove 121 and enters between the liner 2 and the buckle 12 along the surface of the buckle 12 to fill the gap between the liner 2 and the buckle 12. The sealing effect can be improved by extending the sealing surface size of the first sealing member 13; the overall cross-sectional shape of the first sealing member 13 after extending from the groove 121 can be similar to an inverted "Ω" shape.

[0047] Optionally, a plurality of through holes 131 may be provided on the first seal 13, and the axial direction of the through holes 131 may be consistent with the length direction of the seam of the liner 2, and the plurality of through holes 131 may be located between the groove 121 and the liner folded edge 11; a through hole 131 may be provided on the first seal 13 between the groove 121 and the liner folded edge 11, and the axial direction of the through hole 131 may be consistent with the length direction of the seam of the liner 2, that is, the axial direction of the through hole 131 may be perpendicular to the compression direction of the first seal 13; when the first seal 13 is compressed under the movement of the two snap members 12, the through hole 131 may increase the compression amount of the first seal 13, thereby improving the sealing performance between the groove 121 and the liner folded edge 11, and further improving the overall deformation amount of the sealing joint structure 1, thereby improving the internal pressure bearing range of the sealing joint structure 1.

[0048] In this embodiment, a second seal 15 may be provided in the gap between the two liner folds 11, and the second seal 15 is in close contact with the two liner folds 11; by adding the second seal 15 between the two liner folds 11, a sealing measure may be added on the basis of the first seal 13, thereby improving the overall sealing performance of the sealing joint structure 1; specifically, the second seal 15 may be a center-sandwich rubber block, the cross-sectional shape of which may cooperate with the liner folds 11 on both sides, and the overall structure may be an "hourglass" structure that is wide at the top and bottom and narrow in the middle. After being fitted with the liner folds 11 on both sides, the gap between the two liner folds 11 may be sealed to prevent air pressure from leaking from between the two liner folds 11.

[0049] Furthermore, the second seal 15 can be in close contact with the first seal 13; making the second seal 15 in close contact with the first seal 13 can increase the size of the sealing surface and enhance the sealing performance; at the same time, the fitting surface between the second seal 15 and the first seal 13 can correspond to the seam between the two snap members 12, that is, when the air pressure acts on the first seal 13 along the seam between the two snap members 12, the second seal 15 can apply positive pressure to the first seal 13 to counteract the air pressure, so that the first seal 13 maintains contact with the groove surface of the groove 121 and maintains the sealing performance.

[0050] Specifically, the first seal 13 and the second seal 15 can be made of polyurethane sealing materials, butyl rubber, EPDM rubber, silicone rubber and other rubber, polyurea, epoxy resin composite and polymer materials, and ETFE polymer film and other materials with certain tensile properties and high-pressure airtight materials, etc. The above materials can all be used as sealing materials, and the present invention does not limit the specific type of sealing material.

[0051] It should be noted that Figure 1 and Figure 2In order to better display the various components in the structure, obvious gaps appear between the groove 121, the first seal 13, the lining fold 11 and the second seal 15. However, in fact, during use, the above structures are closely attached to each other to ensure sealing, and the gaps shown in the figure do not represent the actual state.

[0052] Example 2

[0053] This embodiment provides an assembled lining structure of a gas storage chamber.

[0054] The assembled liner structure of the gas storage chamber described in this embodiment may include a liner 2 and a plurality of sealing joint structures of the assembled liner of the gas storage chamber as described in Example 1. Here, the liner 2 may be composed of a plurality of liner blocks, a plurality of sealing joint structures 1 may be arranged circumferentially along the structure of the liner 2, and the liner 2 may be integrally connected with the liner fold 11. Specifically, the number of sealing joint structures 1 may be 8, and the 8 sealing joint structures 1 may be evenly distributed on the liner 2 structure along the circumferential direction. Of course, the number of sealing joint structures 1 provided on the liner 2 structure may be selected according to actual needs and is not limited to 8. Whether the arrangement is evenly distributed may also be selected, and the present invention does not specifically limit this.

[0055] It should be noted that the sealing joint structure 1 described in this embodiment is consistent with the sealing joint structure 1 in Example 1, and this embodiment will not be further described in detail.

[0056] Example 3

[0057] This embodiment provides a gas storage chamber.

[0058] The gas storage chamber described in this embodiment may include a surrounding rock layer 5, an initial support layer 4, a secondary lining layer 3 and an assembled lining structure of the gas storage chamber as described in Example 2, which are arranged in sequence from the outside to the inside.

[0059] In this embodiment, the secondary lining layer 3 is provided with a plurality of split seams 31 along the circumferential direction of the chamber, and the plurality of split seams 31 correspond one-to-one to the plurality of sealing joint structures 1, and the plurality of split seams 31 are filled with third sealing members 32; split seams 31 are reserved on the secondary lining layer 3 so that when the secondary lining layer 3 is subjected to internal pressure, the deformation is concentrated at the split seams 31 to avoid crack damage to the lining structure, and the third sealing members 32 are filled in the split seams 31 to ensure sealing; here, the third sealing member 32 can be made of materials such as polyurethane foam board and wood composite board, which can expand after the split seams 31 are opened to maintain contact with the secondary lining layer 3 and maintain sufficient air tightness.

[0060] Here, the third sealing member 32 may also be made of polyurethane sealing materials, butyl rubber, EPDM rubber, silicone rubber and other rubber, polyurea, epoxy resin composite and polymer materials, and ETFE polymer film and other materials with certain tensile properties and high-pressure airtightness, etc. All of the above materials can be used as sealing materials, and the present invention does not limit the specific type of sealing material.

[0061] In this embodiment, a sealing component is provided between the seam 31 and the corresponding sealing joint structure 1, and the sealing component is sealed at the opening of the seam 31. The sealing component includes a sealant 33, a rigid pad 34 and an elastic pad 35 stacked in sequence from the outside to the inside; a plurality of layers of sealing components can be further provided at the opening of the seam 31, and the sealant 33 can enter the seam 31 after the seam 31 is opened to compensate for the gap generated after the third seal 32 is deformed. The rigid pad 34 can be a steel pad, and the elastic pad 35 can be a rubber plate; the rigid pad 34 and the elastic pad 35 can be provided to maintain the sealing performance at the opening of the seam 31 after the seam 31 is opened, and the rigid pad 34 is provided above the elastic pad 35 to prevent the elastic pad 35 from being squeezed into the seam 31 after the seam 31 is opened, affecting the sealing effect.

[0062] In summary, the sealing joint structure of the assembled liner of the gas storage chamber of the present invention can design a pair of liner folding structures at the joint position between the two liners, that is, at the edge of the liner, so that it corresponds to the groove structure on the snap-on component. After the two snap-ons are docked and connected by fasteners, the liner folding edge can be inserted into the groove and fixed by utilizing the matching relationship between the liner folding edge and the groove. In addition, a first sealing component is arranged on the groove surface of the groove. The first sealing component can fill the gap between the folding edge and the groove on both sides, and can also cover the joint between the two snap-ons for sealing. Even if the two liners move away from each other under the action of internal pressure, or even separate the two snap-ons from each other, the gap between the liners, the gap between the folding edge and the groove, and the gap between the two snap-ons can be sealed by utilizing the first sealing component. The sealing surface size of the sealing joint structure is longer than the sealing surface size of the weld, and the sealing effect is better. Moreover, the sealing joint structure is a detachable assembly structure, which can be directly installed by utilizing its structural features and fastened by a fastening component. Compared with welding construction and ensuring the quality of the weld, its construction efficiency is higher.

[0063] 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 sealing joint structure for assembling an inner liner of a gas storage chamber, characterized in that: It comprises two snap fasteners (12) and two lining folding edges (11), the two snap fasteners (12) are each provided with a groove (121), the two snap fasteners (12) can be butted together and the two grooves (121) can be butted together to form a mounting groove, and the two lining folding edges (11) are arranged opposite to each other in the mounting groove; A first sealing member (13) is provided on the inner walls of the two opposite grooves (121), and the first sealing member (13) is used to fill the gap between the lining fold (11) and the groove (121); The two snap fasteners (12) are connected via a fastening assembly (14).

2. The sealing joint structure of the assembled liner of the gas storage chamber according to claim 1 is characterized in that: The fastening assembly (14) comprises a screw rod (141), two nuts (142) and a plurality of elastic members (143); the screw rod (141) is inserted into the two clip members (12); the two nuts (142) are sleeved on the screw rod (141) and are respectively located on two sides of the clip members (12); and the plurality of elastic members (143) are sleeved on the screw rod (141) and are respectively located between the two nuts (142) and the clip members (12).

3. The sealing joint structure of the assembled liner of the gas storage chamber according to claim 1 is characterized in that: The first sealing member (13) extends from the gap between the lining fold (11) and the groove (121) to the gap between the lining (2) and the buckle member (12).

4. The sealing joint structure of the assembled liner of the gas storage chamber according to claim 1 is characterized in that: The first sealing member (13) is provided with a plurality of through holes (131), the axial directions of the plurality of through holes (131) are consistent with the length direction of the seam of the liner (2), and the plurality of through holes (131) are located in a portion of the first sealing member (13) between the groove (121) and the liner folded edge (11).

5. The sealing joint structure of the assembled liner of the gas storage chamber according to claim 1 is characterized in that: A second sealing member (15) is provided between the two lining folded edges (11), and the second sealing member (15) is in close contact with the two lining folded edges (11).

6. The sealing joint structure of the assembled liner of the gas storage chamber according to claim 5 is characterized in that: The second sealing member (15) is in close contact with the first sealing member (13).

7. An assembled lining structure of a gas storage chamber, characterized in that: It comprises a plurality of liners (2), two adjacent liners (2) are connected via a sealing joint structure (1) for assembling the liner of the gas storage chamber as claimed in any one of claims 1 to 6, and the liner (2) is integrally connected with the liner fold (11).

8. A gas storage chamber, characterized in that: It comprises a surrounding rock layer (5), an initial supporting layer (4), a secondary lining layer (3) and an assembled lining structure of the gas storage chamber as described in claim 7, which are arranged in sequence from the outside to the inside.

9. The gas storage chamber according to claim 8, characterized in that: The secondary lining layer (3) is provided with a plurality of slits (31) distributed in the circumferential direction of the chamber, the positions of the plurality of slits (31) correspond one-to-one to the positions of the plurality of sealing joint structures (1), and the slits (31) are filled with third sealing members (32).

10. The gas storage chamber according to claim 9, characterized in that: A sealing assembly is provided between the split seam (31) and the corresponding sealing joint structure (1), and the sealing assembly comprises a sealing glue (33), a rigid pad (34) and an elastic pad (35) which are stacked in sequence from the outside to the inside.

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