Artificial cavern gas storage with zipper seal structure and installation method

Abstract

The present application relates to a kind of artificial cavern gas storage of installing zip type sealing structure and installation method, wherein artificial cavern gas storage includes gas storage main body, zip type splicing sealing unit and drainage system, the method of installing zip type sealing structure is by standardization production prefabricated capsule to ensure the size accuracy and quality of sealing material, transported to construction site, using the way of inflation fitting, vacuum fixing and zip splicing, the installation construction of sealing structure is completed, the problem of traditional flexible sealing layer splicing installation is solved, and according to installation procedure and operation standard site splicing installation, the construction efficiency and quality stability of artificial cavern gas storage sealing layer are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of physical energy storage technology, specifically to an artificial chamber gas storage facility with a zipper-type sealing structure and its installation method. Background Technology

[0002] Currently, traditional sealing methods for artificial gas storage chambers often employ rigid steel sealing layers combined with concrete lining. However, under the frequent high-pressure gas injection and release cycles of the gas storage chamber, the significant difference in deformation between the steel and concrete can easily lead to concrete cracking and gaps between the two. Coupled with the corrosive effects of the humid underground environment, this can ultimately cause sealing failure. Furthermore, rigid structures are difficult to adapt to uneven deformation of the surrounding rock, which can easily lead to stress concentration and exacerbate damage.

[0003] Therefore, flexible sealing layers have gradually become the core development direction for the sealing structure of artificial chamber gas storage facilities in pressurized gas storage power plants. Flexible sealing layers possess excellent deformation adaptability, coordinating the cracking deformation of the concrete lining layer through their own flexible deformation. They can also effectively buffer the stress impact from cyclic loads, reducing the risk of localized stress concentration. Furthermore, high-quality flexible sealing materials have good corrosion resistance, resisting the erosion of underground humid environments and groundwater, significantly improving the long-term durability of the sealing structure. More importantly, flexible sealing layers, through reasonable structural design, can solely perform the sealing function, fully utilizing the bearing capacity of the surrounding rock, optimizing the overall force transmission system of the gas storage facility, and reducing engineering construction and operation and maintenance costs. This is particularly suitable for artificial chamber gas storage projects with complex geological conditions and high requirements for site selection flexibility.

[0004] However, the current application of flexible sealing layers mainly adopts the on-site laying process. Specifically, after the concrete lining of the gas storage chamber is completed, the flexible sealing layer is cut, glued, laid, cured, and compacted onto the inner surface of the chamber lining on the construction site. This on-site, segment-by-segment manual laying process has the problem of long construction cycle for large-scale chambers, and the construction quality depends entirely on the operator's skill level. Problems such as poor sealing of overlapping joints or hollow areas may occur, making it difficult to accurately control the quality of the completed work. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an artificial chamber gas storage facility with a zipper-type sealing structure and an installation method thereof. The purpose is to design a zipper-type splicing structure and use a vacuum bonding and fixing method to solve the problem of difficulty in controlling the installation and construction quality of the flexible sealing layer in current artificial chamber gas storage facilities.

[0006] This invention provides an artificial chamber gas storage facility with a zipper-type sealing structure, including a gas storage body, a zipper-type splicing sealing unit, and a drainage system; The main body of the gas storage facility is a long cylindrical chamber structure formed by concrete lining, and the inner surface of the lining of the main body of the gas storage facility is adapted to install zipper-type sealing splicing units. The zipper-type splicing sealing unit is formed by splicing multiple prefabricated bladders in sequence. Each prefabricated bladder includes a cylindrical surface and a front end surface and a rear end surface that can be detachably connected at both ends. After the zipper-type splicing sealing unit is assembled, it includes multiple cylindrical surfaces that are spliced ​​together in sequence and a rear end surface located at the end of the main body of the gas storage tank. The drainage system is embedded in the lining layer of the main body of the gas storage tank. The drainage system includes multiple drainage units, the number of which is the same as the number of prefabricated bladders. The drainage units and the cylindrical surfaces are arranged one-to-one in the longitudinal direction of the main body of the gas storage tank. Each drainage unit includes a floor drain, which is fitted onto the inner surface of the lining of the gas storage tank body. The floor drain is used to work with the vacuum pump to create negative pressure so that the cylindrical surface fits into the inner surface of the lining. It also has the function of collecting and draining seepage water between the sealing layer and the lining layer to ensure the stability of the sealing structure.

[0007] Furthermore, the structures of each group of drainage units are identical, and each group of drainage units is equipped with an independent drainage main pipe. The independent drainage main pipe is embedded in the lining layer of the main body of the gas storage tank and extends into the access tunnel connected to the main body of the gas storage tank. The extension end of each independent drainage main pipe is connected to a corresponding vacuum pump to realize independent vacuum control of each group of drainage units.

[0008] By equipping each drainage unit with an independent drainage main pipe and connecting it to an independent vacuum pump, a single system can be started or stopped individually. This allows for independent control and adjustment of the vacuum fit between the cylindrical surface of the corresponding section and the lining surface of the chamber. Consequently, the vacuum level can be adjusted specifically according to the differences in surrounding rock deformation or lining flatness at different locations in the gas storage facility, ensuring consistent fit between the cylindrical surface and the lining in each section and improving sealing quality. Furthermore, independent control allows for maintenance of only the faulty module without stopping the entire drainage system in the event of a malfunction in a drainage unit, significantly improving the overall operational reliability of the sealing system.

[0009] Furthermore, the drainage unit also includes a circumferential drainage pipe and a longitudinal drainage pipe; the circumferential drainage pipe is arranged circumferentially along the main body of the gas storage tank, the longitudinal drainage pipe is arranged longitudinally along the main body of the gas storage tank, and multiple sets of the longitudinal drainage pipes are arranged at equal intervals around the circumference of the circumferential drainage pipe, and the contact positions of the two are interconnected.

[0010] By arranging circumferential drainage pipes and longitudinally spaced drainage pipes at equal intervals, and connecting the two to form a network of drainage and air extraction channels, multiple locations on the inner surface of the gas storage lining are covered. This allows for the uniform extraction of air from the area where the cylindrical surface of the gas storage tank meets the lining surface, preventing local vacuum deficiencies that could lead to voids. It also collects seepage water from different locations, preventing water from accumulating on the lining surface and reducing the risk of water erosion of the sealing material.

[0011] Furthermore, several of the floor drains are respectively installed at the connection points of the circumferential drain pipe and the longitudinal drain pipe, as well as at both ends of the longitudinal drain pipe.

[0012] Installing the floor drains at the core nodes of the mesh channel achieves uniform distribution of the floor drains, simultaneously extracts air between the cylindrical surface of the bladder and the lining surface to improve the stability of the vacuum bonding, and collects seepage water at multiple points to protect the sealing material.

[0013] Furthermore, the circumferential drain pipe and the longitudinal drain pipe are connected in a cross-shaped structure, and the cross-shaped structure is located at the longitudinal middle position of the longitudinal drain pipe.

[0014] A cross-shaped interconnected structure allows water or air to flow freely at the intersection without dead zones, preventing stagnation at the connection point and ensuring the stability of the entire system.

[0015] Furthermore, the longitudinal length of the longitudinal drainage pipe is set to be less than the longitudinal width of the cylindrical surface. Through the refined design of the dimensions, the longitudinal drainage pipe is completely within the lining section corresponding to the single cylindrical surface of the bladder, avoiding structural interference between adjacent drainage units and ensuring that the air extraction range of the drainage unit completely matches the coverage range of the single cylindrical surface of the bladder.

[0016] Furthermore, the zippers used in the zipper-type sealing splicing unit are zippers with sealing functions, enabling rapid splicing of adjacent cylindrical surfaces and initial sealing at the connection point; each zipper splice of the zipper-type sealing splicing unit is equipped with a cover seal strip to perform secondary sealing at the zipper splice point. By performing double sealing at the splice point, the potential for leakage at the splice point is completely eliminated, solving the problem of insufficient sealing at the splice point of the prefabricated sealing structure.

[0017] The present invention also provides an installation method for installing the zipper-type sealing structure, specifically including: Preparation steps: The number of prefabricated bladders is determined according to the length of the main body of the gas storage tank. The prefabricated bladders are prefabricated components produced in a standardized manner in the factory, and an injection port is opened on the front end face of the prefabricated bladders. All prefabricated bladders are transported to the construction site. This step involves standardized factory production of prefabricated capsules to ensure the dimensional accuracy and material quality of the sealing structure. Installation steps: S1, transport the first prefabricated capsule to the end of the chamber of the main gas storage unit; S2, seal the outlet of the air pump with the air injection port of the prefabricated bladder, and inject air into the prefabricated bladder through the air injection port to make the prefabricated bladder bulge and make the cylindrical surface fit against the inner lining surface of the main body of the gas storage tank. S3, start the vacuum pump connected to the drainage unit corresponding to the position of the precast bladder. The vacuum pump extracts the air from the joint between the cylindrical surface and the inner surface of the lining through the floor drain, so that the joint is in a vacuum joint state. S4. Once the vacuum level in the vacuum-fitted state meets the preset requirements, remove the inflation pump to release the gas inside the prefabricated capsule. S5, remove the front end face of the first prefabricated capsule, retaining the cylindrical surface and the rear end face; S6, transport the next prefabricated capsule to the preset splicing position inside the main body of the gas storage tank, and repeat the above steps S2-S4; S7, remove the front and rear faces of the next prefabricated capsule, leaving only the cylindrical face, and connect the cylindrical face to the previous cylindrical face that has been placed in place by a zipper; S8. Repeat steps S6-S7 until the zipper-type splicing sealing unit is formed in sequence, and attach the cover seal at each zipper connection to complete the installation of the entire zipper-type sealing structure.

[0018] This step specifies the procedures and operating standards for on-site installation of zipper-type sealing structures, thereby solving the problem that current on-site paving processes mainly rely on the technical level of operators and cannot control construction quality.

[0019] The beneficial effects of this invention are: This invention ensures the dimensional accuracy and quality of sealing materials by producing prefabricated capsules in a standardized factory, transporting them to the construction site, and installing the sealing structure using methods such as inflation bonding, vacuum fixing, and zipper splicing. This solves the problem of splicing and installing traditional flexible sealing layers. Furthermore, by splicing and installing on-site according to installation procedures and operating standards, it ensures the construction efficiency and quality stability of the sealing layer of the artificial chamber gas storage facility.

[0020] In this invention, the sealing layer is vacuum bonded to the inner surface of the lining. Compared with the traditional bonding process that uses adhesive and curing, this not only shortens the construction cycle and avoids the problem of adhesive aging and failure, but also improves the bonding stability between the sealing layer and the lining. Furthermore, the vacuum bonding is reversible. If a section of the cylindrical surface is not tightly bonded or is partially damaged, the vacuum can be removed and readjusted or replaced individually without the need for demolition and reconstruction, and it does not affect the use of other sections of the sealing layer. Attached Figure Description

[0021] Figure 1This is a side view schematic diagram of the perspective structure of an artificial chamber gas storage tank with a zipper-type sealing structure according to the present invention.

[0022] Figure 2 This is a front view schematic diagram of the perspective structure of an artificial chamber gas storage tank with a zipper-type sealing structure according to the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of an artificial chamber gas storage tank with a zipper-type sealing structure after the first prefabricated bladder is placed inside. Figure 4 This is a cross-sectional view of the prefabricated capsule in this invention.

[0024] The attached figures are labeled as follows: 1. Gas storage unit; 2. Prefabricated gas chamber; 21. Cylindrical surface; 22. Front end face; 23. Rear end face; 3. Drainage unit; 31. Circumferential drainage pipe; 32. Longitudinal drainage pipe; 33. Floor drain; 4. Independent main drainage pipe. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] This invention proposes an artificial chamber gas storage facility with a zipper-type sealing structure. An artificial chamber gas storage facility refers to a high-pressure, sealed gas storage space formed by artificial excavation in underground rock and soil, followed by concrete lining and the installation of a sealing layer. Figures 1 to 4 As shown, the artificial chamber gas storage facility includes a main gas storage body 1, a zipper-type splicing sealing unit, and a drainage system; The main body of the gas storage facility 1 is the basic load-bearing structure of the artificial chamber gas storage facility. It is a long cylindrical chamber structure formed by excavation of underground rock and lining with concrete. The inner surface of the concrete lining layer is ground, leveled and cured to form a flat, smooth base surface without obvious protrusions and cracks. It is used to fit and install zipper-type splicing sealing units, which are installed on the inner surface of the lining of the main body of the gas storage facility 1. The zipper-type interlocking sealing unit is used to achieve a high airtightness seal. It is formed by sequentially splicing multiple prefabricated capsules 2. The prefabricated capsules 2 are the basic splicing modules constituting the zipper-type interlocking sealing unit, such as... Figure 4 As shown, it consists of a cylindrical surface 21, a front end surface 22, and a rear end surface 23. The front end surface 22 and the rear end surface 23 are both circular plate-like structures that match the ends of the cylindrical surface 21. They are assembled with the front and rear ends of the cylindrical surface 21 in a detachable connection manner. Specifically, the detachable connection manner is a zipper connection, that is, the edge of the end of the cylindrical surface 21 and the edges of the front end surface 22 and the rear end surface 23 are all fixed with matching zipper teeth. The front end surface 22 and the rear end surface 23 can be quickly connected and disconnected from the cylindrical surface 21 by the zipper head engaging the teeth. The cylindrical surface 21, the front end surface 22, and the rear end surface 23 are all made of flexible sealing material.

[0029] The prefabricated bladder 2 is a prefabricated component produced in the factory according to standardized requirements. During the production process, the material specifications, structural dimensions and assembly precision are strictly controlled. The toothed bands on the cylindrical surfaces of two adjacent prefabricated bladders 2 to be spliced ​​are mutually matching concave-convex meshing structures. The toothed band design of all prefabricated bladders must follow this design to ensure that the cylindrical surfaces of two adjacent prefabricated bladders can be accurately spliced. Furthermore, an air injection port is provided on the front end face 22 of the prefabricated bladder 2. This air injection port is a cylindrical through-hole structure, which is used for sealing and assembly with the air outlet end of the air pump during on-site installation. It can inject gas into the inner cavity of the prefabricated bladder 2, causing the prefabricated bladder 2 to inflate from the contracted state to the designed shape. After all the prefabricated bladders 2 are assembled, a zipper-type splicing and sealing unit is obtained. The assembled whole includes multiple cylindrical surfaces 21 that are sequentially spliced ​​along the longitudinal direction of the gas storage body 1 and a rear end surface 23 located at the end of the gas storage body 1. The rear end surface 23 is connected to the last cylindrical surface 21 by a zipper seal, thereby achieving the sealing and plugging of the end of the gas storage body 1.

[0030] The zippers used in the above splicing are all industrial-grade sealing zippers with sealing functions in the existing technology. Specifically, 737 water and gas sealing zippers can be selected. The tooth surface of this type of zipper is coated with TPU coating. TPU coating is a thermoplastic polyurethane elastomer coating, which has excellent wear resistance, aging resistance, water resistance and air tightness. At the same time, the tooth shape of the zipper adopts a special interlocking structure design. This structure can make there no obvious gap between the teeth after the zipper is engaged, which can achieve efficient isolation of airflow, water vapor and small particles, effectively preventing gas and liquid from leaking from the zipper engagement point.

[0031] During the assembly of the prefabricated capsule 2, adjacent cylindrical surfaces 21 are quickly joined together via a sealing zipper. The zipper's structural characteristics provide initial sealing at the joint. To further enhance the sealing performance, a cover seal is installed at all zipper joints in the zipper-type sealing assembly unit. This cover seal is a flexible sealing strip with high adhesion, high airtightness, and aging resistance, made of the same material as the prefabricated capsule 2. The cover seal adheres tightly to the zipper joint through its adhesive properties, completely covering the entire zipper joint area, achieving a secondary seal. The initial sealing of the sealing zipper and the secondary sealing of the cover seal form a double-sealing structure, completely eliminating the risk of leakage at the joint and effectively solving the problem of insufficient sealing at the joints of the prefabricated sealing structure.

[0032] The drainage system is an auxiliary system in the artificial chamber gas storage facility that works with the zipper-type splicing sealing unit to achieve vacuum bonding and seepage collection. The entire system is embedded in the concrete lining layer of the main body 1 of the gas storage facility. The embedding construction is carried out simultaneously with the concrete lining construction. Various pipes of the drainage system are fixed in the designed positions of the lining layer through the pre-embedding process.

[0033] like Figure 3 As shown, the drainage system includes multiple sets of drainage units 3 with identical structural specifications. The number of drainage units 3 is the same as the number of prefabricated chambers 2. Each drainage unit 3 and the cylindrical surface 21 are set one-to-one in the longitudinal direction of the gas storage body 1. That is, the effective range of a single drainage unit 3 completely covers the contact area between its corresponding single cylindrical surface 21 and the inner surface of the lining. This modular corresponding setting method realizes the modular matching of the sealing structure and the drainage auxiliary system. Each cylindrical surface 21 of the prefabricated chamber 2 has a dedicated drainage unit 3 to provide vacuum pumping and seepage collection support, providing structural support for subsequent independent control and operation and maintenance of single modules. At the same time, the modular design makes targeted system adjustments for the differences in surrounding rock deformation and seepage conditions at different longitudinal positions of the artificial chamber gas storage with complex geological conditions, better adapting to the scenario of artificial chamber gas storage with complex geological conditions. Specifically, each drainage unit 3 is an independent functional module. Each drainage unit 3 includes a circumferential drainage pipe 31, a longitudinal drainage pipe 32, and a floor drain 33. The circumferential drainage pipe 31 is arranged circumferentially along the main body 1 of the gas storage tank, and its circumferential position is consistent with the longitudinal middle position of the corresponding cylindrical surface 21. The longitudinal drainage pipe 32 is arranged longitudinally along the main body 1 of the gas storage tank. Multiple sets of longitudinal drainage pipes 32 are evenly spaced along the circumference of the circumferential drainage pipe 31, and each longitudinal drainage pipe 32 is fully connected to the circumferential drainage pipe 31 at the contact position. The connection position of the two is a cross structure, and the cross structure is located at the longitudinal middle position of the longitudinal drainage pipe 32. In each drainage unit 3, the circumferential arrangement of the circumferential drainage pipes 31 and the equally spaced longitudinal arrangement of multiple sets of longitudinal drainage pipes 32 form an interconnected mesh drainage and air extraction channel within the coverage area of ​​the corresponding cylindrical surface 21. This mesh channel can cover the corresponding area of ​​the inner surface of the lining of the gas storage main body 1, avoiding dead corners in air extraction and drainage. At the same time, the cross-shaped interconnection structure can ensure that water or air flow can be guided without dead corners at the intersection, avoiding siltation at the connection point and ensuring the stability of the entire drainage unit 3. The floor drain 33 is a terminal structure for air extraction and seepage collection. Several floor drains 33 are installed at the cross intersection of the circumferential drainage pipe 31 and the longitudinal drainage pipe 32, and at both ends of each longitudinal drainage pipe 32. The end faces of all floor drains 33 are fitted flush against the inner surface of the lining of the gas storage tank body 1, without protrusions to ensure that the fit between the cylindrical surface 21 of the precast bladder 2 and the inner surface of the lining is not affected, while still ensuring air extraction and drainage. This floor drain 33 is used to cooperate with... A vacuum pump creates a vacuum, drawing air from the area where the cylindrical surface 21 of the precast capsule 2 meets the inner surface of the lining into the mesh channel through the floor drain 33. This creates a stable negative pressure environment, ensuring a tight fit between the cylindrical surface 21 and the inner surface of the lining. Simultaneously, groundwater or condensate from the underground chamber seeps between the sealing layer and the lining layer and enters the mesh channel through the floor drain 33 before being discharged through subsequent pipelines. This prevents water from accumulating between the sealing layer and the lining layer and eroding the sealing material, thus ensuring the long-term stability of the sealing structure.

[0034] Each drainage unit 3 is equipped with an independent drainage main pipe 4, which is sealed and connected to any longitudinal drainage pipe 32 in the corresponding drainage unit 3. The independent drainage main pipe 4 is also embedded in the concrete lining layer of the gas storage body 1. Its arrangement direction is along the longitudinal direction of the gas storage body 1 and extends towards the traffic tunnel, eventually extending to the traffic tunnel connected to the gas storage body 1. The traffic tunnel is an underground auxiliary passage set next to the artificial chamber gas storage, and is connected to the gas storage body 1 through a dedicated connecting passage. A reinforced concrete sealing body is set at the connecting passage to achieve sealing and isolation. Its purpose is to provide space for the construction and operation of gas storage facilities and to arrange equipment for gas storage facilities. At the same time, a dedicated manual maintenance passage is pre-embedded at the connection between the access tunnel and the artificial chamber gas storage facility, which serves as the only passage for personnel or equipment between the gas storage facility and the access tunnel. The maintenance passage is equipped with a high-pressure sealing door to ensure the airtightness of the main body of the gas storage facility 1.

[0035] Therefore, vacuum pumps are installed in the access tunnel. The vacuum pumps are industrial-grade rotary vane vacuum pumps with vacuum adjustment and stable pressure holding functions. Each independent drainage main pipe 4 extends to the end of the access tunnel and is connected to the corresponding vacuum pump. Each vacuum pump provides vacuum pumping power only for the corresponding drainage unit 3, realizing independent vacuum control for each drainage unit 3. In actual use, the vacuum pump corresponding to a single drainage unit 3 can be started or stopped individually to achieve independent control and adjustment of the vacuum fit between the cylindrical surface of the corresponding section and the lining surface of the chamber. Thus, the vacuum parameters can be adjusted according to the differences in surrounding rock deformation or lining flatness at different locations of the gas storage tank to ensure that the fit between the cylindrical surface 21 of each section and the inner surface of the lining is consistent, thereby improving the sealing quality of the sealing structure. At the same time, this independent control design means that if a drainage unit 3 fails, the entire drainage system does not need to be stopped. Only the module corresponding to the faulty drainage unit 3 needs to be repaired, without stopping the operation of the entire drainage system, which greatly improves the overall operational reliability of the sealing system.

[0036] The present invention also provides an installation method for installing the above-mentioned zipper-type sealing structure, specifically including: The preparatory steps before installation involve determining the production quantity of prefabricated bladders 2 based on the length of the main body 1 of the gas storage facility, ensuring that the total longitudinal length of all prefabricated bladders 2 after splicing matches the longitudinal length of the main body 1. For example, if the longitudinal length of the main body 1 is n, and the longitudinal length of the cylindrical surface of the prefabricated bladder 2 is m, then the production quantity k of the prefabricated bladders 2 is obtained by dividing n by m. It is important to note that if the quantity calculated by n / m is not an integer, the longitudinal length m of the prefabricated bladders 2 is slightly adjusted to ensure that the quantity of prefabricated bladders 2 is a positive integer, ensuring that the total longitudinal length after splicing matches the longitudinal length of the main body 1. After determining the quantity k of prefabricated bladders 2, the factory standardizes the production of all prefabricated bladders 2 according to this quantity. After production, the bladders undergo factory quality inspection, and all produced prefabricated bladders 2 are transported to the construction site. The installation steps at the construction site are as follows: S1, transport the first prefabricated bladder 2 to the end of the chamber of the main body of the gas storage 1. The end of the chamber is the end of the main body of the gas storage 1 away from the traffic tunnel. This end is the starting end of the sealing structure splicing. S2, seal the outlet of the air pump with the air injection port of the prefabricated bladder 2, and inject air into the prefabricated bladder 2 through the air injection port to make the prefabricated bladder 2 inflate and make the cylindrical surface 21 fit against the inner lining surface of the gas storage body 1; during the fitting process, construction personnel can be arranged in the chamber to check the fitting to ensure that the cylindrical surface is free of wrinkles, curling edges and unfitted areas. S3, start the vacuum pump connected to the drainage unit 3 corresponding to the position of the precast bladder 2. The vacuum pump extracts the air from the joint between the cylindrical surface 21 and the inner surface of the lining through the floor drain 33, so that the joint is in a vacuum joint state. The vacuum pump continuously extracts the air between the cylindrical surface and the inner surface of the lining, and the vacuum degree at the joint is monitored in real time by the vacuum degree monitoring instrument during the extraction process to ensure that the vacuum degree rises uniformly. S4. When the vacuum degree of the vacuum bonding state meets the preset requirements, the air pump is removed to release the gas inside the precast bladder 2. The vacuum degree at the bonding point is checked by the vacuum degree monitoring instrument. When the vacuum degree reaches the preset value and stabilizes for a period of time, it is determined that the vacuum bonding state meets the requirements. The gas inside the bladder is slowly released and the air pump is removed. During the gas release process, the cylindrical surface 21 is firmly attached to the lining surface due to the vacuum bonding. S5, remove the front end face 22 of the first prefabricated capsule 2, and retain the cylindrical face 21 and the rear end face 23; S6, transport the next prefabricated bladder 2 to the preset splicing position inside the gas storage body 1, and repeat the above steps S2-S4, so that the cylindrical surface of the prefabricated bladder 2 can be tightly fitted with the inner surface of the lining under the action of vacuum negative pressure. The preset splicing position refers to the position that is adjacent to the previous cylindrical surface that is already in place and faces the traffic tunnel. S7, remove the front end face 22 and rear end face 23 of the next prefabricated capsule 2, leaving only the cylindrical surface 21, and connect the cylindrical surface 21 with the previous cylindrical surface 21 that has been in place by a zipper. S8. Repeat steps S6-S7 until the zipper-type splicing sealing unit is formed in sequence, and attach the cover seal at each zipper connection to complete the installation of the entire zipper-type sealing structure.

[0037] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A man-made gas storage chamber with a zipper-type sealing structure, characterized in that, Includes the main body of the gas storage facility (1), a zipper-type splicing sealing unit, and a drainage system; The main body (1) of the gas storage tank is a long cylindrical chamber structure formed by concrete lining, and the inner surface of the lining of the main body (1) of the gas storage tank is adapted to install a zipper-type sealing splicing unit. The zipper-type splicing sealing unit is formed by splicing multiple prefabricated bladders (2) in sequence. The prefabricated bladder (2) includes a cylindrical surface (21) and a front end surface (22) and a rear end surface (23) that can be detachably connected at both ends. After the zipper-type splicing sealing unit is assembled, it includes multiple cylindrical surfaces (21) spliced ​​in sequence by zippers and a rear end surface (23) located at the end of the main body (1) of the gas storage tank. The drainage system is embedded in the lining layer of the main body (1) of the gas storage tank. The drainage system includes multiple drainage units (3). The number of drainage units (3) is the same as the number of prefabricated bladders (2). The drainage units (3) and the cylindrical surface (21) are arranged one-to-one in the longitudinal direction of the main body (1) of the gas storage tank. Each drainage unit (3) includes a floor drain (33), which is attached to the inner surface of the lining of the gas storage body (1) and is used to cooperate with the vacuum pump to draw a vacuum to form a negative pressure so that the cylindrical surface (21) is attached to the inner surface of the lining.

2. The artificial gas storage chamber with a zipper-type sealing structure according to claim 1, characterized in that, Each group of drainage units (3) has the same structure, and each group of drainage units (3) is equipped with an independent drainage pipe (4). The independent drainage pipe (4) is embedded in the lining layer of the gas storage body (1) and extends to the traffic tunnel connected to the gas storage body (1). The extension end of each independent drainage pipe (4) is connected to the corresponding vacuum pump to realize independent vacuum control of each group of drainage units (3).

3. The artificial gas storage chamber with a zipper-type sealing structure according to claim 1, characterized in that, The drainage unit (3) further includes a circumferential drainage pipe (31) and a longitudinal drainage pipe (32); the circumferential drainage pipe (31) is arranged circumferentially along the main body (1) of the gas storage tank, and the longitudinal drainage pipe (32) is arranged longitudinally along the main body (1) of the gas storage tank. Multiple sets of the longitudinal drainage pipe (32) are arranged at equal intervals around the circumference of the circumferential drainage pipe (31), and the contact positions of the two are interconnected.

4. The artificial gas storage chamber with a zipper-type sealing structure according to claim 3, characterized in that, Several of the floor drains (33) are respectively installed at the connection position of the circumferential drain pipe (31) and the longitudinal drain pipe (32), and at both ends of the longitudinal drain pipe (32).

5. The artificial gas storage chamber with a zipper-type sealing structure according to claim 3, characterized in that, The circumferential drain pipe (31) and the longitudinal drain pipe (32) are connected in a cross-shaped structure, and the cross-shaped structure is located at the longitudinal middle position of the longitudinal drain pipe (32).

6. The artificial gas storage chamber with a zipper-type sealing structure according to claim 3, characterized in that, The longitudinal length of the longitudinal drain pipe (32) is set to be less than the longitudinal width of the cylindrical surface (21).

7. The artificial gas storage chamber with a zipper-type sealing structure according to claim 1, characterized in that, Each zipper joint of the zipper-type sealing splicing unit is equipped with a cover seal to achieve secondary sealing at the zipper joint.

8. An installation method for installing any of the zipper-type sealing structures according to claims 1-7, specifically comprising: Preparation steps: The number of prefabricated bladders (2) is determined according to the length of the main body (1) of the gas storage tank. The prefabricated bladders (2) are prefabricated parts produced in a factory according to standardization. An air injection port is opened on the front end face (22) of the prefabricated bladders (2). All prefabricated bladders (2) are transported to the construction site. Installation steps: S1, transport the first prefabricated capsule (2) to the end of the chamber of the main body of the gas storage (1); S2, seal the outlet of the air pump with the air inlet of the prefabricated bladder (2), and inject air into the prefabricated bladder (2) through the air inlet, so that the prefabricated bladder (2) bulges up and the cylindrical surface (21) fits against the inner lining surface of the gas storage body (1). S3, start the vacuum pump connected to the drainage unit (3) corresponding to the position of the precast bladder (2), the vacuum pump extracts the air at the joint between the cylindrical surface (21) and the inner surface of the lining through the floor drain, so that the joint forms a vacuum joint state. S4, when the vacuum degree of the vacuum bonding state meets the preset requirements, remove the air pump to release the gas inside the prefabricated capsule (2); S5, remove the front end face (22) of the first prefabricated capsule (2), and retain the cylindrical face (21) and the rear end face (23). S6, transport the next prefabricated capsule (2) to the preset splicing position inside the main body (1) of the gas storage tank, and repeat the above steps S2-S4; S7, remove the front end face (22) and rear end face (23) of the next prefabricated capsule (2), leaving only the cylindrical surface (21), and connect the cylindrical surface (21) with the previous cylindrical surface (21) that has been placed in place by a zipper; S8. Repeat steps S6-S7 until the zipper-type splicing sealing unit is formed in sequence, and attach the cover seal at each zipper connection to complete the installation of the entire zipper-type sealing structure.

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