Combined sealing lining structure, underground garage of compressed air energy storage power station and construction method of underground garage

Abstract

The invention provides a combined sealing lining structure, a compressed air energy storage power station underground garage and a construction method of the compressed air energy storage power station underground garage, and belongs to the technical field of compressed air energy storage devices. The combined sealing lining structure comprises frameworks, a fixed bottom plate and a plurality of sealing layers, hollow surfaces are formed among the frameworks, the frameworks are matched with the fixed bottom plate, after the frameworks and the fixed bottom plate are assembled, sealing layer clamping grooves are formed between the frameworks and the fixed bottom plate, the sealing layers are spread in the hollow surfaces, and the hollow surfaces are matched with the sealing layers. And the free edges of the sealing layers are filled in the sealing layer clamping grooves, so that the plurality of sealing layers are connected into a whole to form the combined sealing lining structure. The underground garage of the compressed air energy storage power station comprises a concrete lining layer and the combined type sealing lining structure, wherein the combined type sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer. According to the construction method of the underground cave depot of the compressed air energy storage power station, the cave depot can be obtained. The sealing structure is easy and convenient to construct, high in working efficiency, excellent in sealing performance and low in manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage devices, and in particular to a combined sealed liner structure, an underground chamber of a compressed air energy storage power station, and a construction method thereof. Background Art

[0002] Compressed air energy storage technology is an environmentally friendly and efficient large-capacity long-term physical energy storage technology. It does not require the use of fossil fuels and does not emit harmful substances, so it is environmentally friendly. This technology has a significant improvement on the spatial and temporal structure of power generation and power consumption of the power grid, while enhancing the peak-shaving capacity of the power grid and solving the intermittent problem of renewable energy. In my country, this technology is being promoted and applied on a large scale. However, the sealing structure of the underground cavern of the compressed air energy storage power station in the existing technology usually has less than ideal performance and low construction efficiency. Summary of the invention

[0003] In view of this, the present invention provides a combined sealed lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, which are simple to construct, have high working efficiency, excellent sealing performance, and low cost, and are therefore more suitable for practical use.

[0004] In order to achieve the above first object, the technical solution of the combined sealing liner structure provided by the present invention is as follows:

[0005] The combined sealing liner structure provided by the present invention comprises a frame (2), a fixed bottom plate (3) and a plurality of sealing layers (5).

[0006] A hollow surface is formed between the skeletons (2).

[0007] The frame (2) is adapted to the fixed bottom plate (3). When the frame (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the frame (2) and the fixed bottom plate (3).

[0008] The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of the sealing layers (5) are connected as a whole to form the combined sealing lining structure.

[0009] The combined sealing liner structure provided by the present invention can also be further implemented by adopting the following technical measures.

[0010] Preferably, the skeleton (2) comprises a warp skeleton (21) and a weft skeleton (22).

[0011] After the warp skeleton (21) and the weft skeleton (22) are interwoven, a cylindrical shape is formed, and the hollowing is formed between two adjacent warp skeletons (21) and two adjacent weft skeletons (22).

[0012] As a preference, it further comprises an arc-shaped frame (23),

[0013] The arc-shaped skeleton (23) is a longitudinal skeleton of the weft skeleton (22) near the two ends of the skeleton (2).

[0014] The diameter of the weft skeleton (22) near the axial end of the cylinder gradually decreases.

[0015] One end of the arc-shaped frame (23) is connected to a latitudinal frame (22) with a larger diameter, and the other end of the arc-shaped frame (23) is connected to a latitudinal frame (22) with a smaller diameter, so that the diameter of the cylinder at both ends of the axial direction gradually shrinks to form a dome.

[0016] As a preference,

[0017] Observing from the radial cross section of the skeleton (2), the skeleton (2) comprises a first bottom and two first protrusions, wherein the two first protrusions are respectively fixedly connected to the first bottom through one side thereof, so that a first limiting groove is formed between the first bottom and the two first protrusions;

[0018] Observing from the radial cross section of the fixed bottom plate (3), the fixed bottom plate (3) comprises a second bottom and two second protrusions, wherein the two second protrusions are respectively fixedly connected to the second bottom via one side thereof.

[0019] A third protrusion is provided in the middle of the second bottom portion and along the circumference of the second bottom portion.

[0020] Two second limiting grooves are respectively formed between the second protruding portion, the third protruding portion and the second bottom portion;

[0021] The third protrusion is integrated with the second limiting groove by plugging, so that the first protrusion is accommodated in the second limiting groove, and the sealing layer clamping groove is formed between the first protrusion, the second protrusion and the bottom.

[0022] Preferably, the combined sealing liner structure further comprises at least one fourth protrusion.

[0023] The fourth protrusion is fixedly connected to the second protrusion, and the protrusion direction of the fourth protrusion is toward the first protrusion, so that the sealing layer clamping groove has at least one level of detour.

[0024] Preferably, the insertion between the third protrusion and the second limiting groove is a tight fit or an interference fit.

[0025] Preferably, the frame (2) and the fixed base plate (3) are integrally formed.

[0026] Preferably, the combined sealing liner structure further comprises a buffer pad (6),

[0027] The buffer pad (6) is arranged between the sealing layer (5) and the sealing layer clamping groove.

[0028] In order to achieve the above second purpose, the technical solution of the underground cavern of the compressed air energy storage power station provided by the present invention is as follows:

[0029] The underground cavern of the compressed air energy storage power station provided by the present invention comprises a concrete lining layer (1) and a combined sealed lining structure provided by the present invention.

[0030] The combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

[0031] The underground cavern of the compressed air energy storage power station provided by the present invention can also be further implemented by adopting the following technical measures.

[0032] Preferably, the underground storage of the compressed air energy storage power station further comprises a fastener (7),

[0033] After passing through the frame (2) and the fixed base plate (3), the fastener (7) is terminated in the concrete lining layer (1).

[0034] Preferably, the fastener (7) is an anchor rod.

[0035] Preferably, a receiving groove is provided on the inner wall of the concrete lining layer (1).

[0036] The shape of the accommodating groove matches that of the fixed bottom plate (3), so that the fixed bottom plate (3) is embedded in the accommodating groove.

[0037] In order to achieve the third objective above, the technical solution of the construction method of the underground cavern of the compressed air energy storage power station provided by the present invention is as follows:

[0038] The construction method of the underground cavern of the compressed air energy storage power station provided by the present invention comprises the following steps:

[0039] The fixed bottom plate (3) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station;

[0040] The frame (2) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station, so that the frame (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the frame (2) and the fixed bottom plate (3), and a hollow surface is formed between the frame (2);

[0041] The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of the sealing layers (5) are connected as a whole to form the combined sealing lining structure;

[0042] The combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

[0043] The construction method of the underground cavern of the compressed air energy storage power station provided by the present invention can be further implemented by adopting the following technical measures.

[0044] Preferably, the construction method of the underground cavern of the compressed air energy storage power station further comprises the following steps before the step of arranging the fixed bottom plate (3) on the inner wall of the underground cavern of the compressed air energy storage power station:

[0045] A receiving groove is excavated on the inner wall of the concrete lining layer (1) at a position corresponding to the fixed bottom plate (3), and the receiving groove is adapted to the shape of the fixed bottom plate (3) so that the fixed bottom plate (3) can be embedded in the receiving groove.

[0046] Preferably, the construction method of the underground cavern of the compressed air energy storage power station further comprises the following steps:

[0047] Conducting a gas storage test in the underground cavern of the compressed air energy storage power station to determine the sealing performance of the underground cavern;

[0048] Real-time monitoring is carried out on possible leakage points in the underground cavern of the compressed air energy storage power station.

[0049] Preferably, in the step of real-time monitoring of possible leakage points in the underground cavern of the compressed air energy storage power station, the possible leakage points include: the connection between the sealing layer (5) and the fixed bottom plate (3), the connection between the fixed bottom plate (3) and the frame (2), the connection between the fixed bottom plate (3) and the concrete lining layer (1), and one or more parts of the sealing layer (5) itself.

[0050] Preferably, real-time monitoring of possible gas leakage points in the underground storage includes the following steps:

[0051] At possible gas leakage points in the underground cavern of the compressed air energy storage power station, a gas flow monitoring instrument is installed, and a location label is set for each gas flow monitoring instrument;

[0052] According to the position of the gas flow monitoring instrument, an alarm threshold is set for the gas flow monitoring instrument;

[0053] When an abnormal gas flow alarm occurs, the gas leakage point of the underground cavern of the compressed air energy storage power station is determined according to the position tag of the gas flow monitoring instrument that alarms.

[0054] The combined sealing lining structure provided by the present invention can connect the sealing layer 5 by using the sealing layer clamping groove formed between the frame 2 and the fixed base plate 3 after assembly, wherein the free edge of the sealing layer 5 is filled in the sealing layer clamping groove, so that the sealing layer 5 is interlocked with the sealing layer clamping groove, thereby preventing the sealing layer 5 from shifting or falling out, and ensuring air tightness. Therefore, it is formed on the inner side of the concrete lining layer 1 of the underground cavern of the compressed air energy storage power station, and its construction period is shorter than that of the welded steel plate, the cost is lower, it has good sealing performance, and the parts are easy to replace and easier to maintain. Under the premise that the tightness is guaranteed, the air tightness can meet the use requirements. In addition, the sealing layer 5 has a short construction period and the components can be prefabricated. Compared with the disadvantage that the traditional steel plate lining needs on-site welding, it can save a lot of construction time and the cost will be lower. When repairing, the damaged part can be directly replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0056] Attached Figure 1 An axial cross-sectional structural diagram from an internal perspective of an underground cavern of a compressed air energy storage power station provided by an embodiment of the present invention;

[0057] Attached Figure 2 For attachment Figure 1 A schematic diagram of the partially enlarged structure of part A;

[0058] Attached Figure 3 A partial three-dimensional structural diagram of the internal perspective of an underground cavern of a compressed air energy storage power station provided by an embodiment of the present invention;

[0059] Attached Figure 4 For attachment Figure 3 A schematic diagram of the partially enlarged structure of part B;

[0060] Attached Figure 5A radial cross-sectional structural diagram from an internal perspective of an underground cavern of a compressed air energy storage power station provided by an embodiment of the present invention;

[0061] Attached Figure 6 For attachment Figure 5 A schematic diagram of the local enlarged structure of part C in the middle;

[0062] Attached Figure 7 A schematic diagram of the coordination relationship between the anchor rod and the concrete lining layer in the underground cavern of the compressed air energy storage power station provided by an embodiment of the present invention;

[0063] Attached Figure 8 For attachment Figure 7 A schematic diagram of the local enlarged structure of part D in the middle;

[0064] Attached Fig. 9 A schematic diagram of the coordination relationship between the fixed bottom plate and the concrete lining layer in the underground cavern of the compressed air energy storage power station provided by an embodiment of the present invention;

[0065] Attached Fig.10 For attachment Fig. 9 A schematic diagram of the local enlarged structure of part E in the middle;

[0066] Attached Fig.11 A partial three-dimensional structural diagram of the interior of an underground cavern of a compressed air energy storage power station provided by an embodiment of the present invention from another perspective;

[0067] Attached Fig.12 For attachment Fig.11 A schematic diagram of the local enlarged structure of part F in the middle;

[0068] Description of reference numerals:

[0069] 1-concrete lining layer, 2-skeleton, 21-warp skeleton, 22-latitudinal skeleton, 23-arc skeleton, 3-fixed base plate, 4-pressing strip, 5-sealing layer, 6-buffer pad, 7-fastener, 8-weld. DETAILED DESCRIPTION

[0070] In view of this, the present invention provides a combined sealed lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, which are simple to construct, have high working efficiency, excellent sealing performance, and low cost, and are therefore more suitable for practical use.

[0071] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the combined sealed liner structure, the underground cavern of the compressed air energy storage power station and the construction method thereof proposed by the present invention, its specific implementation method, structure, characteristics and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0072] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B. Specifically, it is understood that: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may be met.

[0073] Combined sealing liner structure

[0074] See attached Figure 1 -Attached Fig.12 The combined sealing liner structure provided by the embodiment of the present invention includes a frame 2, a fixed bottom plate 3 and a plurality of sealing layers 5. A hollow surface is formed between the frames 2. The frames 2 are adapted to the fixed bottom plate 3. When the frames 2 and the fixed bottom plate 3 are assembled, a sealing layer clamping groove is formed between the frames 2 and the fixed bottom plate 3. The sealing layer 5 is spread in the hollow surface, and the free edge of the sealing layer 5 is filled in the sealing layer clamping groove, so that the plurality of sealing layers 5 are connected as a whole to form a combined sealing liner structure.

[0075] The combined sealing liner structure provided in the embodiment of the present invention can connect the sealing layer 5 by utilizing the sealing layer clamping groove formed between the frame 2 and the fixed base plate 3 after they are assembled, wherein the free edge of the sealing layer 5 is filled in the sealing layer clamping groove, so that the sealing layer 5 and the sealing layer clamping groove are interlocked, thereby preventing the sealing layer 5 from shifting or falling out and ensuring air tightness.

[0076] The frame 2 includes a warp frame 21 and a weft frame 22. The warp frame 21 and the weft frame 22 are interwoven to form a cylindrical shape, and a hollow is formed between two adjacent warp frames 21 and two adjacent weft frames 22. In this embodiment, the warp frames 21 and the weft frames 22 are evenly distributed, so that the combined sealing liner structure provided in the embodiment of the present invention can be isotropic. When prefabricating the sealing layer 5, only a standard prefabricated sealing layer 5 needs to be made to achieve replacement when the parts are damaged.

[0077] Among them, the combined sealing liner structure provided by the embodiment of the present invention also includes an arc-shaped skeleton 23. The arc-shaped skeleton 23 is a warp skeleton of the weft skeleton 22 near the two ends of the skeleton 2. The diameter of the weft skeleton 22 near the end of the cylindrical axial direction gradually decreases. One end of the arc-shaped skeleton 23 is connected to the weft skeleton 22 with a larger diameter, and the other end of the arc-shaped skeleton 23 is connected to the weft skeleton 22 with a smaller diameter, so that the diameter of the cylinder at both ends of the axial direction gradually shrinks to form a dome. In this case, the combined sealing liner structure provided by the embodiment of the present invention also includes an arc-shaped skeleton 23, so that domes can be formed at both ends of the axial direction, thereby making the application scope of the combined sealing liner structure provided by the embodiment of the present invention wider. In this case, the sealing layer 5 between two adjacent arc-shaped skeletons 23 is different from the sealing layer 5 between the warp skeleton 21 and the weft skeleton 22. Therefore, it is necessary to prefabricate the sealing layer 5 parts for replacement according to the size of the arc-shaped skeleton 23.

[0078] Among them, when observing from the radial cross section of the skeleton 2, the skeleton 2 includes a first bottom and two first protrusions, and the two first protrusions are fixedly connected to the first bottom through one side thereof, so that a first limiting groove is formed between the first bottom and the two first protrusions. When observing from the radial cross section of the fixed bottom plate 3, the fixed bottom plate 3 includes a second bottom and two second protrusions, and the two second protrusions are fixedly connected to the second bottom through one side thereof, and a third protrusion is also provided in the middle of the second bottom along the circumference of the second bottom, so that two second limiting grooves are formed between the second protrusion, the third protrusion, and the second bottom, respectively. The third protrusion is integrated with the second limiting groove by plugging, so that the first protrusion is accommodated in the second limiting groove, and a sealing layer clamping groove is formed between the first protrusion, the second protrusion, and the bottom. In this case, the frame 2 can be in the shape of a Chinese character "concave", and the fixed bottom plate can be in the shape of a Chinese character "mountain", wherein a second limiting groove is formed between the left vertical and the middle vertical of the Chinese character "mountain", and between the right vertical and the middle vertical of the Chinese character "mountain", and the two first protrusions of the Chinese character "concave" are respectively accommodated in the two second limiting grooves. It can be formed by CAD cutting and CAM cutting, and the forming method is simple and convenient.

[0079] The combined sealing liner structure further includes at least one fourth protrusion. The fourth protrusion is fixedly connected to the second protrusion, and the protrusion direction of the fourth protrusion is toward the first protrusion, so that the sealing layer clamping groove has at least one level of detour. In this case, the sealing layer clamping groove has at least one level of detour due to at least one fourth protrusion, forming a labyrinth, which can increase the contact area between the sealing layer 5 and the inner wall of the sealing layer clamping groove after the sealing layer 5 is filled in the sealing layer clamping groove, and increase the travel of the sealing layer 5 when it accidentally escapes from the sealing layer clamping groove, so that the connection safety and stability between the sealing layer 5 and the skeleton 2 and the fixed bottom plate 3 can be better ensured.

[0080] The insertion between the third protrusion and the second limiting groove is a tight fit or an interference fit. In this case, the connection between the frame 2 and the fixed base plate 3 is more stable and reliable, and the sealing instability at the connection between the frame 2 and the fixed base plate 3 can be avoided.

[0081] The frame 2 and the fixed bottom plate 3 are integrally formed. In this embodiment, when the frame 2 and the fixed bottom plate 3 are integrally formed, CAD cutting and CAM cutting can be used for integral forming. There is no connection joint in the integral forming process, which can reduce stress concentration, thereby extending the combined sealing liner structure provided by the embodiment of the present invention.

[0082] The combined sealing liner structure also includes a buffer pad 6. The buffer pad 6 is arranged between the sealing layer 5 and the sealing layer clamping groove. In this embodiment, the buffer pad 6 can be made of a material with a high damping coefficient, or a material that can be deformed under pressure, such as rubber or natural latex. In this case, the buffer pad 6 can increase the damping between the sealing layer 5 and the skeleton 2 and the fixed bottom plate 3, making it more difficult for the sealing layer 5 to escape from between the skeleton 2 and the fixed bottom plate 3, thereby further ensuring the connection stability of the combined sealing liner structure provided by the embodiment of the present invention, and further ensuring the airtightness of the combined sealing liner structure provided by the embodiment of the present invention.

[0083] Compressed air energy storage power station underground warehouse

[0084] The underground cavern of the compressed air energy storage power station provided by the present invention comprises a concrete lining layer 1 and a combined sealed lining structure provided by the present invention. The combined sealed lining structure is fixedly arranged on the inner wall of the concrete lining layer 1.

[0085] The combined sealing lining structure provided by the embodiment of the present invention is formed on the inner side of the concrete lining layer 1 of the underground cavern of the compressed air energy storage power station. Its construction period is shorter than that of the welded steel plate, the cost is lower, it has good sealing performance, and the parts are easy to replace and easier to maintain. Under the premise of ensuring the tightness, the airtightness can meet the use requirements. In addition, the sealing layer 5 has a short construction period and the components can be prefabricated. Compared with the disadvantage that the traditional steel plate lining needs on-site welding, it can save a lot of construction time and the cost will be lower. During maintenance, the damaged part can be directly replaced.

[0086] The underground chamber of the compressed air energy storage power station further includes a fastener 7. After the fastener 7 passes through the frame 2 and the fixed bottom plate 3, it ends in the concrete lining layer 1. In this case, the combined sealing lining structure provided by the embodiment of the present invention is fixed in the concrete lining layer 1 by the fastener 7, which can reduce the possibility of displacement of the combined sealing lining structure provided by the embodiment of the present invention as a whole in the concrete lining layer 1, thereby ensuring the implementation stability of the underground chamber of the compressed air energy storage power station provided by the embodiment of the present invention.

[0087] The fastener 7 is an anchor rod. In this case, the anchor rod is used as the skeleton 2, the fixed bottom plate 3 and the concrete lining layer 1 of the underground cavern of the compressed air energy storage power station. The technical solution is simple, convenient and low-cost to implement.

[0088] Among them, a receiving groove is provided on the inner wall of the concrete lining layer 1. The receiving groove is adapted to the shape of the fixed bottom plate 3, so that the fixed bottom plate 3 is embedded in the receiving groove. In this case, the limiting effect formed by the side wall of the receiving groove itself can be used to prevent the fixed bottom plate 3 from shifting relative to the concrete lining layer 1, so that the application stability of the underground cavern of the compressed air energy storage power station provided by the embodiment of the present invention is better.

[0089] Construction method of underground storage for compressed air energy storage power station

[0090] The construction method of the underground cavern of the compressed air energy storage power station provided by the present invention comprises the following steps:

[0091] Step S1: Arrange a fixed bottom plate 3 on the inner wall of the underground cavern of the compressed air energy storage power station;

[0092] Step S2: arranging a frame 2 on the inner wall of the underground cavern of the compressed air energy storage power station, so that the frame 2 and the fixed bottom plate 3 are assembled, a sealing layer clamping groove is formed between the frame 2 and the fixed bottom plate 3, and a hollow surface is formed between the frame 2;

[0093] Step S3: Spread the sealing layer 5 in the hollow surface, and fill the free edge of the sealing layer 5 in the sealing layer clamping groove, so that multiple sealing layers 5 are connected as a whole to form a combined sealing lining structure;

[0094] Step S4: fix the combined sealing lining structure to the inner wall of the concrete lining layer 1 .

[0095] Through the construction method of the underground cavern of the compressed air energy storage power station provided by the embodiment of the present invention, the combined sealed lining structure provided by the embodiment of the present invention can be formed on the inner side of the concrete lining layer 1 of the underground cavern of the compressed air energy storage power station. Its construction period is shorter than that of the welded steel plate, the cost is lower, it has good sealing performance, and the parts are easy to replace and easier to maintain. On the premise that the tightness is guaranteed, the airtightness can meet the use requirements. In addition, the sealing layer 5 has a short construction period and the components can be prefabricated. Compared with the disadvantage that the traditional steel plate lining requires on-site welding, it can save a lot of construction time and the cost will be lower. During maintenance, the damaged part can be directly replaced.

[0096] Among them, the construction method of the underground cavern of the compressed air energy storage power station further includes the following steps before the step of arranging the fixed bottom plate 3 on the inner wall of the underground cavern of the compressed air energy storage power station:

[0097] On the inner wall of the concrete lining layer 1, a receiving groove is excavated at a position corresponding to the fixed bottom plate 3, and the receiving groove is adapted to the shape of the fixed bottom plate 3, so that the fixed bottom plate 3 can be embedded in the receiving groove.

[0098] In this case, the limiting effect formed by the side wall of the accommodating groove itself can be utilized to prevent the fixed bottom plate 3 from shifting relative to the concrete lining layer 1, so that the application stability of the underground cavern of the compressed air energy storage power station provided by the embodiment of the present invention is better.

[0099] Among them, the construction method of the underground cavern of the compressed air energy storage power station also includes the following steps:

[0100] Conduct gas storage tests in the underground chamber of the compressed air energy storage power station to determine the sealing performance of the underground chamber;

[0101] Carry out real-time monitoring of possible leakage points in the underground storage of compressed air energy storage power stations.

[0102] In this case, possible gas leakage points in the underground chamber can be monitored in real time, and once a gas leakage occurs, it can be known and remedied in time.

[0103] Among them, in the process of real-time monitoring of possible air leakage points in the underground cavern of the compressed air energy storage power station, possible air leakage points include: the connection between the sealing layer 5 and the fixed bottom plate 3, the connection between the fixed bottom plate 3 and the frame 2, the connection between the fixed bottom plate 3 and the concrete lining layer 1, and one or more parts of the sealing layer 5 itself. In this case, the possible air leakage points in the underground cavern can be accurately monitored in real time.

[0104] Among them, real-time monitoring of possible gas leakage points in underground storage includes the following steps:

[0105] Install gas flow monitoring instruments at possible gas leakage points in the underground storage of compressed air energy storage power stations, and set location labels for each gas flow monitoring instrument;

[0106] According to the location of the gas flow monitoring instrument, an alarm threshold is set for the gas flow monitoring instrument;

[0107] When an abnormal gas flow alarm occurs, the leakage point of the underground cavern of the compressed air energy storage power station is determined based on the location tag of the gas flow monitoring instrument that alarms.

[0108] In this case, once a possible gas leakage point in the underground chamber occurs, the gas leakage point of the underground chamber can be accurately determined based on the alarm information and the location tag of the gas flow monitoring instrument, so that emergency repair measures can be taken.

[0109] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0110] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A combined sealing liner structure, characterized in that: It comprises a frame (2), a fixed base plate (3) and a plurality of sealing layers (5). A hollow surface is formed between the skeletons (2). The frame (2) is adapted to the fixed bottom plate (3). When the frame (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the frame (2) and the fixed bottom plate (3). The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of the sealing layers (5) are connected as a whole to form the combined sealing lining structure.

2. The combined sealing liner structure according to claim 1, characterized in that: The skeleton (2) comprises a warp skeleton (21) and a weft skeleton (22), After the warp skeleton (21) and the weft skeleton (22) are interwoven, a cylindrical shape is formed, and the hollowing is formed between two adjacent warp skeletons (21) and two adjacent weft skeletons (22).

3. The combined sealing liner structure according to claim 2, characterized in that: It also includes an arc-shaped frame (23), The arc-shaped skeleton (23) is a longitudinal skeleton of the weft skeleton (22) near the two ends of the skeleton (2). The diameter of the weft skeleton (22) near the axial end of the cylinder gradually decreases. One end of the arc-shaped frame (23) is connected to a latitudinal frame (22) with a larger diameter, and the other end of the arc-shaped frame (23) is connected to a latitudinal frame (22) with a smaller diameter, so that the diameter of the cylinder at both ends of the axial direction gradually shrinks to form a dome.

4. The combined sealing liner structure according to claim 1, characterized in that: Observing from the radial cross section of the skeleton (2), the skeleton (2) comprises a first bottom and two first protrusions, wherein the two first protrusions are respectively fixedly connected to the first bottom through one side thereof, so that a first limiting groove is formed between the first bottom and the two first protrusions; Observing from the radial cross section of the fixed bottom plate (3), the fixed bottom plate (3) comprises a second bottom and two second protrusions, wherein the two second protrusions are respectively fixedly connected to the second bottom via one side thereof. A third protrusion is provided in the middle of the second bottom portion and along the circumference of the second bottom portion. Two second limiting grooves are respectively formed between the second protruding portion, the third protruding portion and the second bottom portion; The third protrusion is integrated with the second limiting groove by plugging, so that the first protrusion is accommodated in the second limiting groove, and the sealing layer clamping groove is formed between the first protrusion, the second protrusion and the bottom.

5. The combined sealing liner structure according to claim 4, characterized in that: Also includes at least one fourth protrusion, The fourth protrusion is fixedly connected to the second protrusion, and the protrusion direction of the fourth protrusion is toward the first protrusion, so that the sealing layer clamping groove has at least one level of detour.

6. The combined sealing liner structure according to claim 4, characterized in that: The insertion between the third protrusion and the second limiting groove is a tight fit or an interference fit; Preferably, the frame (2) and the fixed base plate (3) are integrally formed; Preferably, the combined sealing liner structure further comprises a buffer pad (6), The buffer pad (6) is arranged between the sealing layer (5) and the sealing layer clamping groove.

7. A compressed air energy storage power station underground cavern, characterized in that: It comprises a concrete lining layer (1) and a combined sealing lining structure as claimed in any one of claims 1 to 6, The combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

8. The underground cavern of the compressed air energy storage power station according to claim 7, characterized in that: Also includes a fastener (7), After passing through the frame (2) and the fixed base plate (3), the fastener (7) is terminated in the concrete lining layer (1); Preferably, the fastener (7) is an anchor rod; Preferably, a receiving groove is provided on the inner wall of the concrete lining layer (1). The shape of the accommodating groove matches that of the fixed bottom plate (3), so that the fixed bottom plate (3) is embedded in the accommodating groove.

9. The construction method of the underground cavern of the compressed air energy storage power station according to any one of claims 7-8, characterized in that: The following steps are involved: The fixed bottom plate (3) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station; The frame (2) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station, so that the frame (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the frame (2) and the fixed bottom plate (3), and a hollow surface is formed between the frame (2); The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of the sealing layers (5) are connected as a whole to form the combined sealing lining structure; The combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

10. The construction method of the underground cavern of the compressed air energy storage power station according to claim 9, characterized in that: The underground storage of the compressed air energy storage power station is the underground storage of the compressed air energy storage power station according to claim 12. The construction method of the underground storage of the compressed air energy storage power station further comprises the following steps before the step of arranging the fixed bottom plate (3) on the inner wall of the underground storage of the compressed air energy storage power station: A receiving groove is excavated on the inner wall of the concrete lining layer (1) at a position corresponding to the fixed bottom plate (3), the receiving groove being adapted to the shape of the fixed bottom plate (3) so that the fixed bottom plate (3) can be embedded in the receiving groove; Preferably, the construction method of the underground cavern of the compressed air energy storage power station further comprises the following steps: Conducting a gas storage test in the underground cavern of the compressed air energy storage power station to determine the sealing performance of the underground cavern; Conduct real-time monitoring of possible gas leakage points in the underground storage of the compressed air energy storage power station; Preferably, in the step of real-time monitoring of possible gas leakage points of the underground cavern of the compressed air energy storage power station, the possible gas leakage points include: the connection between the sealing layer (5) and the fixed bottom plate (3), the connection between the fixed bottom plate (3) and the frame (2), the connection between the fixed bottom plate (3) and the concrete lining layer (1), and one or more of the parts of the sealing layer (5); Preferably, real-time monitoring of possible gas leakage points in the underground storage includes the following steps: At possible gas leakage points in the underground cavern of the compressed air energy storage power station, a gas flow monitoring instrument is installed, and a location label is set for each gas flow monitoring instrument; According to the position of the gas flow monitoring instrument, an alarm threshold is set for the gas flow monitoring instrument; When an abnormal gas flow alarm occurs, the gas leakage point of the underground cavern of the compressed air energy storage power station is determined according to the position tag of the gas flow monitoring instrument that alarms.

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