Self-adaptive deformation sealing structure of chamber lining and gas storage chamber

Abstract

The invention relates to the technical field of new energy structures, in particular to a self-adaptive deformation sealing structure of a chamber lining and a gas storage chamber. A self-adaptive deformation sealing structure of a chamber lining comprises at least two segmental linings, the segmental linings are arranged at intervals along the lining design position of a chamber, and a construction joint is formed between every two adjacent segmental linings; the two ends of the connecting piece are fixed to the inner walls of the two adjacent segmental linings correspondingly, the connecting piece is provided with a cavity, an opening of the cavity faces the structural joint, and the two adjacent segmental linings are away from each other so that the cavity can be squeezed, and the volume of the cavity can be reduced; and the filling piece is used for filling the structural joint and the cavity. According to the tunnel lining structure, the defects that in the prior art, most chamber linings are divided into blocks, flexible sealing materials are arranged between every two adjacent segment linings, but the flexible sealing materials are prone to being extruded out or torn, and leakage between every two adjacent segment linings is prone to being caused are overcome. The tunnel lining structure overcomes the defects that in the prior art, chamber linings are mostly divided into blocks, and the flexible sealing materials are arranged between every two adjacent segment linings.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy structures, and in particular to an adaptive deformation sealing structure of a chamber lining and a gas storage chamber. Background Art

[0002] In recent years, renewable energy represented by wind and solar energy has developed rapidly. However, the volatility and intermittency of renewable energy generation lead to uncertainty in its power generation and time, and the mismatch between power generation and power consumption is becoming increasingly prominent, which poses a great challenge to the operational stability of the power grid. When there is an excess of renewable energy generation, due to the lack of effective energy storage methods, a large amount of electricity cannot be effectively stored and utilized, resulting in frequent wind and solar power abandonment. This problem has become increasingly prominent against the backdrop of the rapid development of renewable energy.

[0003] Compressed air energy storage technology can effectively solve the problem of orderly consumption and storage of renewable energy electricity in the power grid system, improve power supply efficiency through peak shaving and valley filling, peak load regulation and frequency modulation, and ensure the safety and economy of the power grid. Artificial gas storage caverns have become the main choice for current and future compressed air energy storage projects due to their high safety, site selection flexibility, excellent durability and reasonable economy. Therefore, most of the compressed air energy storage projects currently under construction and planning have adopted the form of artificial gas storage caverns. Artificial gas storage caverns have become a widely studied gas storage method due to their flexible site selection and large gas storage capacity. Unlike traditional underground caverns, compressed gas energy storage chambers need to achieve gas sealing under the action of high temperature and high internal pressure circulation. In order to enhance the sealing, a sealing layer needs to be set on the inside of the lining layer.

[0004] In order to enhance the sealing performance of the chamber, a flexible sealing layer is often installed inside the lining to fit the chamber lining. However, under the action of high internal pressure, the concrete lining structure of the chamber will inevitably crack, and the cracking position is random. When the crack width is too large, the flexible sealing layer may be damaged by the high internal pressure, causing leakage of the gas storage chamber. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art in which a flexible sealing layer in a full ring tightly attached to the chamber lining is set inside the lining, but the flexible sealing layer may be damaged by cracks under high internal pressure and cause leakage of the gas storage chamber, and to provide an adaptive deformation sealing structure of the chamber lining and a gas storage chamber.

[0006] In a first aspect, the present invention provides an adaptive deformation sealing structure for a chamber lining, comprising:

[0007] At least two segment linings, the segment linings are arranged at intervals along the lining design position of the chamber, and there is a structural joint between two adjacent segment linings;

[0008] A connecting piece, wherein both ends of the connecting piece are respectively fixed to the inner walls of two adjacent segment linings, the connecting piece is provided with a cavity, the cavity opening faces the structural seam, and the two adjacent segment linings are moved away from each other to squeeze the cavity so that the volume of the cavity is reduced;

[0009] A filling piece is used to fill the construction gap and the cavity.

[0010] During the gas storage process, the gas is compressed and stored in the chamber. At this time, the gas molecules will be evenly distributed throughout the space, thereby generating an outward thrust on the inner wall of the lining. This thrust will cause the lining to bear tensile stress in the radial direction, and will also generate circumferential stress in the circumferential direction. Circumferential stress can easily cause the lining to crack, so the present application adopts a segment lining, and the segment lining is arranged at intervals along the design position of the lining, so that a structural seam is formed between two adjacent segment linings. When the chamber is subject to circumferential stress and has a tendency to crack, the structural seam can guide the lining to crack at this position, so that the lining cracks appear at the structural seam, and ensure that cracks occur in other parts of the segment lining as much as possible, avoiding the impact of the chamber's sealing due to random cracking positions. Moreover, the cracked segment lining can be reused, which helps to reduce subsequent repair costs. Filling the structural seam with a filler helps to ensure the sealing of the chamber, and it is also convenient to repair the chamber after cracking at the structural seam. When two adjacent segment linings move away from each other, causing the structural seam to increase, the cavity is squeezed so that the filling piece inside the cavity moves toward the inside of the structural seam to fill the increased volume of the structural seam, and avoid the appearance of pores in the structural seam as much as possible, thereby preventing leakage; when two adjacent segment linings move closer to each other, the volume of the structural seam decreases, and the filling piece inside the structural seam is squeezed into the cavity of the connector without separating from the segment lining; when the distance between the two segment linings is restored, the squeezed filling piece can also enter the structural seam again, and avoid penetration at the structural seam as much as possible. Compared with the prior art that sets a full ring of flexible sealing layers, the connectors of the present application are arranged at intervals in the structural seam, which avoids the connectors from being damaged by seams as much as possible, and is conducive to improving the sealing of the chamber.

[0011] Preferably, the connecting member is a flexible member.

[0012] The connector uses a flexible component to avoid the two adjacent segment linings moving away from each other as much as possible. The cavity volume of the connector can be reduced accordingly, squeezing the filling piece inside the cavity into the structural joint; when the distance between the two adjacent segment linings is reduced, the cavity area is increased accordingly, and there is more space to accommodate the filling piece squeezed out of the structural joint.

[0013] Preferably, the connecting piece is a steel belt, a nylon belt, a Kevlar belt or a rubber belt.

[0014] Preferably, an embedded steel plate is provided in the segment lining, and the embedded steel plate is used to connect the connecting piece.

[0015] Embedded steel plates are arranged inside the segment lining to facilitate the connection of the connectors to the inner wall of the segment lining.

[0016] Preferably, the connecting member comprises two connecting parts and at least two movable parts, two adjacent movable parts are connected by a hinge, the connecting part and the movable part are connected by a hinge, the connecting part is used to connect the inner wall of the segment lining, and the movable part is used to enclose the chamber.

[0017] The connecting piece includes a connecting portion and a moving portion, and the connecting portion and the moving portion, as well as two adjacent moving portions, are connected by hinges. The moving portion is used to enclose a chamber, and when the distance between two adjacent segment linings increases, the angle between the two adjacent moving portions increases, thereby squeezing the filling piece inside the chamber into the structural joint; when the distance between two adjacent segment linings decreases, the angle between the two adjacent moving portions decreases, and the filling piece extruded from the structural joint can be accommodated.

[0018] Preferably, the filling piece is a rubber member, a sealing foam or a sealing paste.

[0019] Preferably, the structural joint between two adjacent segment linings is provided with a shear member.

[0020] The shear member can be a shear key, a shear pin or a shear nail, etc. A shear member is arranged between two adjacent segment linings to avoid the misalignment of the two adjacent segment linings as much as possible, which affects the structural stability of the chamber.

[0021] Preferably, the shear resistant member is a shear pin, and both ends of the shear pin are respectively anchored to the side walls of two adjacent segment linings.

[0022] The two ends of the shear pin are anchored to the side walls of the two adjacent segment linings facing the structural joint, which can avoid the misalignment of the two adjacent segment linings as much as possible, thereby affecting the structural stability of the chamber.

[0023] Preferably, the fixing steel bars extend into the side wall of the segment lining facing the structural joint, and the fixing steel bars are used to fix the shear pins.

[0024] The fixing steel bars extend into the side walls of the segment lining and are used to fix the shear pins, which helps to ensure the stability of the shear pins and avoid dislocation of the segment lining as much as possible.

[0025] In a second aspect, the present invention provides a gas storage chamber, comprising an adaptive deformation sealing structure of a chamber lining as described above.

[0026] A gas storage chamber includes a concrete lining joint sealing structure as described above, which can induce the chamber to crack at the structural joint as much as possible, and a connector is arranged at the structural joint. When two adjacent segment linings move away from each other, causing the structural joint to increase, the chamber is squeezed so that the filling member inside the chamber moves toward the inside of the structural joint to fill the increased volume of the structural joint, and avoid the occurrence of pores in the structural joint as much as possible, thereby preventing leakage; when two adjacent segment linings approach each other, the volume of the structural joint decreases, and the filling member inside the structural joint is squeezed into the chamber of the connector without separating from the segment lining; when the distance between the two segment linings is restored, the squeezed filling member can also enter the structural joint again, and avoid penetration at the structural joint as much as possible. The connectors are arranged at intervals, which can avoid the occurrence of seam damage as much as possible and ensure the sealing of the chamber as much as possible.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention provides an adaptive deformation sealing structure for a chamber lining, comprising at least two segment linings, a filling piece and a connecting piece. The segment lining is adopted, and the segment lining is arranged at intervals along the designed position of the lining, so that a structural seam is formed between two adjacent segment linings. When the chamber is subjected to circumferential stress and has a tendency to crack, the structural seam can guide the lining to crack at this position, so that the lining cracks appear at the structural seam, and ensure that cracks occur in other parts of the segment lining as much as possible, avoiding the impact on the sealing of the chamber due to random cracking positions. Moreover, the cracked segment lining can be reused, which helps to reduce subsequent repair costs. Filling the filling piece in the structural seam helps to ensure the sealing of the chamber, and it is also convenient to repair the chamber after cracking at the structural seam. When two adjacent segment linings move away from each other, causing the structural seam to increase, the cavity is squeezed so that the filling piece inside the cavity moves toward the inside of the structural seam to fill the increased volume of the structural seam, and avoid the appearance of pores in the structural seam as much as possible, thereby preventing leakage. When two adjacent segment linings move closer to each other, the volume of the structural seam decreases, and the filling piece inside the structural seam is squeezed into the cavity of the connector without separating from the segment lining. When the distance between the two segment linings is restored, the squeezed filling piece can also enter the structural seam again, and avoid penetration at the structural seam as much as possible. Compared with the prior art that sets a full-ring flexible sealing layer, the connectors of the present application are arranged at intervals in the structural seam to avoid the connectors from being damaged by seams as much as possible, which is beneficial to improving the sealing of the chamber. An adaptive deformation sealing structure for a chamber lining overcomes the shortcomings of the prior art that a full-ring flexible sealing layer is set inside the lining to fit the chamber lining tightly, but the flexible sealing layer may be damaged by seams under high internal pressure, causing leakage in the gas storage chamber.

[0029] 2. The present invention provides a gas storage chamber, comprising a concrete lining joint sealing structure as described above, which can induce the chamber to crack at the structural joint as much as possible, and a connector is arranged at the structural joint. When two adjacent segment linings move away from each other, so that the structural joint increases, the chamber is squeezed so that the filling member inside the chamber moves toward the inside of the structural joint, fills the increased volume of the structural joint, and avoids the occurrence of pores in the structural joint as much as possible, thereby preventing leakage; when two adjacent segment linings approach each other, the volume of the structural joint decreases, and the filling member inside the structural joint is squeezed into the chamber of the connector without separating from the segment lining; when the distance between the two segment linings is restored, the squeezed filling member can also enter the structural joint again, so as to avoid penetration at the structural joint as much as possible. And the connectors are arranged at intervals, which can avoid the occurrence of seam damage as much as possible and ensure the sealing of the chamber as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structure diagram of the adaptive deformation sealing structure of the chamber lining of the present invention is shown in FIG. Figure 1 (before cracking);

[0031] Figure 2 The structure diagram of the adaptive deformation sealing structure of the chamber lining of the present invention is shown in FIG. Figure 2 (after cracking);

[0032] Figure 3 The structure diagram of the adaptive deformation sealing structure of the chamber lining of the present invention is shown in FIG. Figure 3 (Before cracking)

[0033] Figure 4 The structure diagram of the adaptive deformation sealing structure of the chamber lining of the present invention is shown in FIG. Figure 4 (after cracking);

[0034] Figure 5 yes Figure 3 Enlarged view of point A in the middle

[0035] Figure 6 is a front view schematic diagram of the connection structure of the shear pin (perpendicular to the axis of the shear pin);

[0036] Figure 7 is a schematic diagram of the shear pin connection structure test (parallel to the axis of the shear pin);

[0037] Icons: 1-segment lining, 2-filling parts, 3-connecting parts, 301-connecting part, 302-moving part, 303-hinge, 4-embedded steel plate, 5-shear pins, 6-fixed steel bars, 7-surrounding rock. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Example 1

[0045] like Figures 1 to 7 As shown, an adaptive deformation sealing structure of a chamber lining comprises:

[0046] At least two segment linings 1, wherein the segment linings 1 are arranged at intervals along the lining design position of the chamber, and a structural joint is provided between two adjacent segment linings 1;

[0047] A connecting member 3, both ends of which are respectively fixed to the inner walls of two adjacent segment linings 1, the connecting member 3 is provided with a cavity, the cavity opening faces the structural seam, and the two adjacent segment linings 1 are moved away from each other to squeeze the cavity so that the volume of the cavity is reduced;

[0048] A filling piece 2 is used to fill the structural seam and the cavity.

[0049] During the gas storage process, the gas is compressed and stored in the chamber. At this time, the gas molecules will be evenly distributed in the entire space, thereby generating an outward thrust on the inner wall of the lining. This thrust will cause the lining to bear tensile stress in the radial direction, and will also generate circumferential stress in the circumferential direction. Circumferential stress can easily cause the lining to crack, so the present application adopts a segment lining 1, and the segment lining 1 is arranged at intervals along the design position of the lining, so that a structural seam is formed between two adjacent segment linings 1. When the chamber is subject to circumferential stress and has a tendency to crack, the structural seam can guide the lining to crack at this position, so that the lining cracks appear at the structural seam, thereby ensuring that other parts of the segment lining 1 are not damaged to the greatest extent, and try to avoid affecting the stability of the chamber structure due to the random cracking position, and the cracked segment lining 1 can be used again, which helps to reduce the subsequent repair costs. Filling the filling member 2 in the structural seam helps to ensure the sealing of the chamber, and it is also convenient to repair the chamber after cracking at the structural seam. When two adjacent segment linings move away from each other, causing the structural joint to increase, the cavity is squeezed so that the filling piece 2 inside the cavity moves toward the inside of the structural joint to fill the increased volume of the structural joint, thereby avoiding pores in the structural joint as much as possible, thereby preventing leakage; when two adjacent segment linings approach each other, the volume of the structural joint decreases, and the filling piece 2 inside the structural joint is squeezed into the cavity of the connector 3 without separating from the segment lining 1; when the distance between the two segment linings 1 is restored, the squeezed filling piece 2 can also enter the structural joint again, thereby avoiding seepage at the structural joint as much as possible.

[0050] The connector 3 is a flexible component. The connector 3 uses a flexible component to avoid the connector 3 from cracking when two adjacent segment linings move away from each other, thereby affecting the sealing performance of the chamber. In this embodiment, the connector 3 is a steel belt. In other usage modes, the connector 3 can also be a nylon belt, a Kevlar belt, or a rubber belt.

[0051] The segment lining 1 is provided with an embedded steel plate 4, which is used to connect the connector 3. When the connector 3 is a steel belt, the embedded steel plate 4 is selectively provided; when the connector 3 is a flexible component other than a steel belt, the embedded steel plate 4 must be provided to facilitate the connection of the connector 3 to the inner wall of the segment lining 1.

[0052] In this embodiment, the connecting member 3 can also be replaced by the following forms:

[0053] like Figure 3-Figure 5 As shown, the connecting member 3 includes two connecting parts 301 and two movable parts 302, and two adjacent movable parts 302 are connected by a hinge 303. The connecting part 301 and the movable part 302 are connected by the hinge 303. The connecting part 301 is used to connect the inner wall of the segment lining 1, and the movable part 302 is used to enclose the chamber.

[0054] The filling member 2 is a rubber member, sealing foam or sealing paste.

[0055] The structural joint between two adjacent segment linings 1 is provided with a shear member. The shear member can be a shear key, a shear pin 5 or a shear nail, etc. A shear member is provided between two adjacent segment linings 1 to avoid the misalignment of the two adjacent segment linings 1 as much as possible, which affects the structural stability of the chamber. In this embodiment, the shear member is a shear pin 5, and the two ends of the shear pin 5 are respectively anchored to the side walls of the two adjacent segment linings 1.

[0056] The fixing steel bar 6 extends into the side wall of the segment lining 1 toward the structural joint, and the fixing steel bar 6 is used to fix the shear pin 5. Figure 6 and Figure 7 As shown, two fixing steel bars 6 are arranged on one side of a segment lining 1, and the two fixing steel bars 6 fix the shear pin 5 from above and below respectively. One shear pin 5 needs to be fixed by four fixing steel bars 6, which is beneficial to improving the stability of the structure.

[0057] Example 2

[0058] A gas storage chamber, characterized in that it includes an adaptive deformation sealing structure of a chamber lining as described in Example 1, which can induce the chamber to crack at a structural joint as much as possible, and a connecting piece 3 is arranged at the structural joint. When two adjacent segment linings move away from each other, causing the structural joint to increase, the chamber is squeezed so that the filling piece 2 inside the chamber is transferred toward the inside of the structural joint to fill the increased volume of the structural joint, thereby avoiding the occurrence of pores in the structural joint and leakage as much as possible; when two adjacent segment linings approach each other, the volume of the structural joint decreases, and the filling piece 2 inside the structural joint is squeezed into the chamber of the connecting piece 3 without separating from the segment lining 1; when the distance between the two segment linings 1 is restored, the squeezed filling piece 2 can also enter the structural joint again, thereby avoiding the occurrence of seepage at the structural joint as much as possible.

[0059] 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. An adaptive deformation sealing structure for chamber lining, characterized in that: Include: At least two segment linings (1), wherein the segment linings (1) are arranged at intervals along the lining design position of the chamber, and a structural joint is provided between two adjacent segment linings (1); A connecting piece (3), the two ends of which are respectively fixed to the inner walls of two adjacent segment linings (1), the connecting piece (3) being provided with a cavity, the cavity opening being oriented toward the structural joint, and the two adjacent segment linings (1) being moved away from each other so as to squeeze the cavity so that the volume of the cavity is reduced; A filling piece (2), the filling piece (2) is used to fill the structural seam and the cavity.

2. The adaptive deformation sealing structure of a chamber lining according to claim 1, characterized in that: The connecting member (3) is a flexible member.

3. The adaptive deformation sealing structure of a chamber lining according to claim 2, characterized in that: The connecting piece (3) is a steel belt, a nylon belt, a Kevlar belt or a rubber belt.

4. The adaptive deformation sealing structure of a chamber lining according to claim 3 is characterized in that: An embedded steel plate (4) is provided in the segment lining (1), and the embedded steel plate (4) is used to connect the connecting piece (3).

5. The adaptive deformation sealing structure of chamber lining according to claim 1, characterized in that: The connecting member (3) comprises two connecting parts (301) and at least two moving parts (302), two adjacent moving parts (302) are connected via a hinge (303), the connecting part (301) and the moving part (302) are connected via a hinge (303), the connecting part (301) is used to connect to the inner wall of the segment lining (1), and the moving part (302) is used to enclose the chamber.

6. An adaptive deformation sealing structure for chamber lining according to any one of claims 1 to 5, characterized in that: The filling piece (2) is a rubber component, sealing foam or sealing paste.

7. An adaptive deformation sealing structure for chamber lining according to any one of claims 1 to 5, characterized in that: The structural joint between two adjacent segment linings (1) is provided with a shear-resistant member.

8. The adaptive deformation sealing structure of chamber lining according to claim 7, characterized in that: The shear-resistant member is a shear pin (5), and both ends of the shear pin (5) are respectively anchored to the side walls of two adjacent segment linings (1).

9. The adaptive deformation sealing structure of chamber lining according to claim 8, characterized in that: The fixing steel bars (6) extend into the side wall of the segment lining (1) toward the structural joint, and the fixing steel bars (6) are used to fix the shear pins (5).

10. A gas storage chamber, characterized in that: An adaptive deformation sealing structure for a chamber lining is provided, comprising the structure as described in any one of claims 1 to 9.

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