Combined sealing lining structure, compressed air energy storage power station underground cavern and construction method thereof

Abstract

The application provides a combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, and belongs to the technical field of compressed air energy storage devices. The combined sealing lining structure comprises a framework, a fixed bottom plate and a plurality of sealing layers. The framework forms a hollow surface between the frameworks. The framework is matched with the fixed bottom plate. When the framework and the fixed bottom plate are assembled, a sealing layer clamping groove is formed between the framework and the fixed bottom plate. The sealing layer is spread in the hollow surface. The free edge of the sealing layer is filled in the sealing layer clamping groove. The plurality of sealing layers are connected to form the combined sealing lining structure. The compressed air energy storage power station underground cavern comprises a concrete lining layer and the combined sealing lining structure provided by the application. The combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer. The construction method of the compressed air energy storage power station underground cavern can obtain the cavern. The construction method is simple, efficient, has excellent sealing performance, and is low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressed air energy storage devices, in particular to a combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof. BACKGROUND

[0002] The compressed air energy storage technology is an environmentally friendly and efficient large-capacity long-time physical energy storage technology, which does not need to use fossil fuels and does not emit harmful substances, and is therefore friendly to the environment. The technology has a significant improvement effect on the time and space structure of power generation and power consumption of the power grid, and at the same time enhances the peak regulation capacity of the power grid and solves the intermittency problem of renewable energy. In China, this technology is being promoted and applied on a large scale. However, the sealing structure of the compressed air energy storage power station underground cavern in the prior art is usually not ideal in performance, and the construction efficiency is low. SUMMARY

[0003] Therefore, the present application provides a combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, which is simple to construct, high in work efficiency, excellent in sealing performance and low in cost, and is more suitable for practical use.

[0004] In order to achieve the first purpose, the technical scheme of the combined sealing lining structure provided by the present application is as follows:

[0005] The combined sealing lining structure provided by the present application comprises a framework (2), a fixed bottom plate (3) and a plurality of sealing layers (5),

[0006] The frameworks (2) form a hollow surface therebetween,

[0007] The framework (2) is adapted to the fixed bottom plate (3), and when the framework (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the framework (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 sealing layers (5) are connected to form the combined sealing lining structure.

[0009] The combined sealing lining structure provided by the present application can further be realized by the following technical measures.

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

[0011] The warp frames (21) and weft frames (22) are interwoven to form a cylindrical shape, and the hollows are formed between adjacent two warp frames (21) and adjacent two weft frames (22).

[0012] As a preferred embodiment, the structure further comprises arc-shaped frames (23),

[0013] The arc-shaped frames (23) are weft frames (22) near the two ends of the frame (2),

[0014] The diameter of the weft frames (22) near the ends of the cylindrical shape gradually decreases,

[0015] One end of the arc-shaped frame (23) is connected to the weft frame (22) with a larger diameter, and the other end of the arc-shaped frame (23) is connected to the weft frame (22) with a smaller diameter, so that the diameter of the cylindrical shape gradually decreases at the two ends in the axial direction to form a dome.

[0016] As a preferred embodiment,

[0017] As viewed from the radial cross-section of the frame (2), the frame (2) comprises a first bottom and two first protrusions, and the two first protrusions are respectively fixedly connected to the first bottom by one side, so that a first limiting groove is formed between the first bottom and the two first protrusions;

[0018] As viewed from the radial cross-section of the fixed bottom plate (3), the fixed bottom plate (3) comprises a second bottom and two second protrusions, and the two second protrusions are respectively fixedly connected to the second bottom by one side,

[0019] A third protrusion is further provided on the second bottom along the circumferential direction of the second bottom,

[0020] So that two second limiting grooves are respectively formed between the second protrusion, the third protrusion, and the second bottom;

[0021] The third protrusion and the second limiting groove are integrally formed by insertion, 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] As a preferred embodiment, the combined sealing inner liner structure further comprises at least one fourth protrusion,

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

[0024] As preferred, the insertion between the third protruding part and the second limiting groove is a tight fit or interference fit.

[0025] As preferred, the skeleton (2) and the fixed bottom plate (3) are integrally formed.

[0026] As preferred, the combined sealing lining 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 second purpose, the underground cavern of the compressed air energy storage power station provided by the application has the following technical solutions:

[0029] The underground cavern of the compressed air energy storage power station provided by the application comprises a concrete lining layer (1) and a combined sealing lining structure provided by the application,

[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 application can be further realized by the following technical measures.

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

[0033] The fastener (7) passes through the skeleton (2) and the fixed bottom plate (3) and is stopped in the concrete lining layer (1).

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

[0035] As preferred, the inner wall of the concrete lining layer (1) is provided with a containing groove,

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

[0037] In order to achieve the third purpose, the construction method of the underground cavern of the compressed air energy storage power station provided by the application has the following technical solutions:

[0038] The construction method of the underground cavern of the compressed air energy storage power station provided by the application 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 skeleton (2) is arranged on the inner wall of the compressed air energy storage power station underground cavern, so that the skeleton (2) and the fixed bottom plate (3) are assembled, a sealing layer holding groove is formed between the skeleton (2) and the fixed bottom plate (3), and the skeleton (2) forms a hollow surface;

[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 holding groove, so that a plurality of sealing layers (5) are connected 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 compressed air energy storage power station underground cavern provided by the application can also adopt the following technical measures for further implementation.

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

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

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

[0047] The compressed air energy storage power station underground cavern is subjected to a gas storage test to determine the sealing performance of the underground cavern.

[0048] The possible air leakage points of the compressed air energy storage power station underground cavern are monitored in real time.

[0049] As preferred, during the step of monitoring the possible air leakage points of the compressed air energy storage power station underground cavern in real time, the possible air leakage points include one or more of the following: the connection between the sealing layer (5) and the fixed bottom plate (3), the connection between the fixed bottom plate (3) and the skeleton (2), the connection between the fixed bottom plate (3) and the concrete lining layer (1), and a part of the sealing layer (5).

[0050] As preferred, monitoring the possible air leakage points of the underground cavern in real time specifically comprises the following steps:

[0051] Gas flow monitoring instruments are arranged at possible air leakage points of the compressed air energy storage power station underground cavern, and each gas flow monitoring instrument is provided with a position label;

[0052] An alarm threshold is set for the gas flow monitoring instrument according to the position of the gas flow monitoring instrument;

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

[0054] The combined sealing lining structure can be connected with the sealing layer 5 by using the sealing layer clamping groove formed between the framework 2 and the fixed bottom 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 and the sealing layer clamping groove are embedded, thereby avoiding displacement or falling out of the sealing layer 5, and ensuring air tightness. Therefore, it is formed on the inner side of the concrete lining layer 1 of the compressed air energy storage power station underground cavern, and the construction period is shorter than that of the welded steel plate, the cost is lower, the sealing performance is good, and the parts are easy to replace and maintain. Under the premise of ensuring the fastening, the air tightness can meet the use requirements. In addition, the sealing layer 5 has a short construction period, the components can be prefabricated, and compared with the traditional steel plate lining which needs to be welded on site, a lot of construction period can be saved, and the cost is also lower. When overhauling, the damaged place can be directly replaced. BRIEF DESCRIPTION OF DRAWINGS

[0055] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not considered a limitation of the present application. Further, like reference numerals have been used throughout the several views to designate identical elements. In the drawings:

[0056] ATTACHMENT Figure 1 The internal perspective axial sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure;

[0057] ATTACHMENT Figure 2 The internal perspective axial sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure; Figure 1 The local enlarged structure schematic diagram of part A is shown in the figure;

[0058] ATTACHMENT Figure 3 The internal perspective axial sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure;

[0059] ATTACHMENT Figure 4 The internal perspective axial sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure; Figure 3 The local enlarged structure schematic diagram of part B is shown in the figure;

[0060] ATTACHMENT Figure 5A radial cross-sectional view of the internal structure of the underground chamber of the compressed air energy storage power station provided in an embodiment of the present invention;

[0061] Appendix Figure 6 For the appendix Figure 5 A magnified schematic diagram of part C in the middle;

[0062] Appendix Figure 7 A schematic diagram illustrating the relationship between anchor bolts and concrete lining layers in an underground chamber of a compressed air energy storage power station provided in an embodiment of the present invention.

[0063] Appendix Figure 8 For the appendix Figure 7 A magnified schematic diagram of part D in the middle section;

[0064] Appendix Figure 9 A schematic diagram illustrating the relationship between the fixed base plate and the concrete lining layer in the underground chamber of a compressed air energy storage power station provided in an embodiment of the present invention;

[0065] Appendix Figure 10 For the appendix Figure 9 A magnified schematic diagram of a portion of the structure in section E;

[0066] Appendix Figure 11 This is another perspective view of the internal structure of the underground chamber of the compressed air energy storage power station provided in an embodiment of the present invention;

[0067] Appendix Figure 12 For the appendix Figure 11 A partially enlarged structural diagram of section F in the middle;

[0068] Explanation of reference numerals in the attached figures:

[0069] 1-Concrete lining layer, 2-Frame, 21-Warp frame, 22-Weft frame, 23-Arc frame, 3-Fixed base plate, 4-Pressure strip, 5-Sealing layer, 6-Buffer pad, 7-Fastener, 8-Weld. Detailed Implementation

[0070] In view of this, the present invention provides a combined sealed inner lining structure, an underground silo for compressed air energy storage power stations, and a construction method thereof, which is simple to construct, highly efficient, has excellent sealing performance, and is inexpensive, thus making it more suitable for practical use.

[0071] To further clarify the technical means and effects taken by the present application to achieve the intended purpose, the following describes in detail the specific implementation, structure, features and effects of a combined sealing liner structure, compressed air energy storage power station underground cavern and its construction method according to the present application, with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0072] The term "and / or" herein merely describes the association relationship of the associated objects, and indicates that there can be three relationships, for example, A and / or B, which can be understood as: A and B can exist at the same time, A can exist alone, and B can exist alone, and any one of the above three cases can exist.

[0073] Combined seal liner structure

[0074] Referring to the accompanying drawings Figure 1 -Appendix Figure 12 The combined sealing liner structure provided by the embodiments of the present application includes a framework 2, a fixed bottom plate 3 and a plurality of sealing layers 5. The framework 2 forms a hollow surface therebetween. The framework 2 is adapted to the fixed bottom plate 3, and when the framework 2 and the fixed bottom plate 3 are assembled, a sealing layer holding groove is formed between the framework 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 holding groove, so that the plurality of sealing layers 5 are connected to form a combined sealing liner structure.

[0075] The combined sealing liner structure provided by the embodiments of the present application can connect the sealing layer 5 by using the sealing layer holding groove formed between the framework 2 and the fixed bottom plate 3 after the assembly of the framework 2 and the fixed bottom plate 3, wherein the free edge of the sealing layer 5 is filled in the sealing layer holding groove, so that the sealing layer 5 and the sealing layer holding groove form a fit, thereby avoiding displacement or dislocation of the sealing layer 5, and ensuring air tightness.

[0076] The framework 2 includes a warp framework 21 and a weft framework 22. After interweaving between the warp framework 21 and the weft framework 22, a cylindrical shape is formed, and a hollow is formed between adjacent two warp frameworks 21 and adjacent two weft frameworks 22. In this embodiment, the warp framework 21 and the weft framework 22 are uniformly distributed, so that the combined sealing liner structure provided by the embodiments of the present application is isotropic, and only a standard prefabricated sealing layer 5 needs to be made to replace the damaged parts when the prefabricated sealing layer 5 is made.

[0077] In the combined sealing liner structure provided by the embodiment of the present application, the arc-shaped framework 23 is a warp framework near the ends of the framework 2, and the diameter of the warp framework 22 near the ends in the axial direction of the cylinder gradually decreases. One end of the arc-shaped framework 23 is connected to the warp framework 22 with a larger diameter, and the other end of the arc-shaped framework 23 is connected to the warp framework 22 with a smaller diameter, so that the diameter of the cylinder gradually decreases at the two ends in the axial direction to form a dome. In this case, the combined sealing liner structure provided by the embodiment of the present application further includes the arc-shaped framework 23, so that a dome is formed at the two ends in the axial direction, thereby making the combined sealing liner structure provided by the embodiment of the present application more widely applicable. In this case, the sealing layer 5 between the two adjacent arc-shaped frameworks 23 has a different specification from the sealing layer 5 between the warp framework 21 and the warp framework 22, so that the sealing layer 5 parts for replacement need to be additionally prepared according to the size of the arc-shaped framework 23.

[0078] In the radial section of the framework 2, the framework 2 includes a first bottom and two first protrusions, and the two first protrusions are fixedly connected to the first bottom by one side of each of the two first protrusions, so that a first limiting groove is formed between the first bottom and the two first protrusions. In the radial 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 by one side of each of the two second protrusions. A third protrusion is further arranged in the middle of the second bottom along the circumferential direction of the second bottom, so that two second limiting grooves are respectively formed between the second protrusion, the third protrusion, and the second bottom. The third protrusion and the second limiting groove are integrally formed by insertion, 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 framework 2 can be in the shape of a “concave” character, and the fixed bottom plate can be in the shape of a “mountain” character. In the shape of the “mountain” character, one second limiting groove is respectively formed between the left vertical of the “mountain” character and the middle vertical and between the right vertical of the “mountain” character and the middle vertical, and the two first protrusions of the “concave” character are respectively accommodated in the two second limiting grooves. The framework 2 and the fixed bottom plate 3 can be respectively formed by CAD cutting and CAM cutting, and the forming method is simple and convenient.

[0079] In the radial section of the framework 2, the framework 2 includes a first bottom and two first protrusions, and the two first protrusions are fixedly connected to the first bottom by one side of each of the two first protrusions, so that a first limiting groove is formed between the first bottom and the two first protrusions. In the radial 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 by one side of each of the two second protrusions. A third protrusion is further arranged in the middle of the second bottom along the circumferential direction of the second bottom, so that two second limiting grooves are respectively formed between the second protrusion, the third protrusion, and the second bottom. The third protrusion and the second limiting groove are integrally formed by insertion, 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 framework 2 can be in the shape of a “concave” character, and the fixed bottom plate can be in the shape of a “mountain” character. In the shape of the “mountain” character, one second limiting groove is respectively formed between the left vertical of the “mountain” character and the middle vertical and between the right vertical of the “mountain” character and the middle vertical, and the two first protrusions of the “concave” character are respectively accommodated in the two second limiting grooves. The framework 2 and the fixed bottom plate 3 can be respectively formed by CAD cutting and CAM cutting, and the forming method is simple and convenient.

[0080] The third protruding part and the second limiting groove are in tight fit or interference fit, so that the connection between the framework 2 and the fixed bottom plate 3 is more stable and reliable, and the sealing instability at the connection between the framework 2 and the fixed bottom plate 3 can be avoided.

[0081] The framework 2 and the fixed bottom plate 3 are integrally formed, and in this embodiment, the CAD cutting and CAM cutting are used for integrally forming the framework 2 and the fixed bottom plate 3, so that the stress concentration can be reduced, thereby prolonging the combined sealing lining structure provided in the embodiment.

[0082] The combined sealing lining structure further comprises a buffer pad 6, which is arranged between the sealing layer 5 and the sealing layer clamping groove, and in this embodiment, the buffer pad 6 can be made of a material with high damping coefficient or a material that can be deformed under pressure, such as rubber or natural rubber, so that the damping between the sealing layer 5 and the framework 2 and the fixed bottom plate 3 can be increased, and the difficulty of the sealing layer 5 being separated from the framework 2 and the fixed bottom plate 3 can be increased, thereby further ensuring the connection stability of the combined sealing lining structure provided in the embodiment and further ensuring the air tightness of the combined sealing lining structure provided in the embodiment.

[0083] Underground cavern for compressed air energy storage power plant

[0084] The combined sealing lining structure provided in the embodiment is arranged on the inner wall of the concrete lining layer 1 of the compressed air energy storage power station underground cavern.

[0085] The combined sealing lining structure provided in the embodiment is arranged on the inner wall of the concrete lining layer 1 of the compressed air energy storage power station underground cavern.

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

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

[0088] The inner wall of the concrete lining layer 1 is provided with a receiving groove. The receiving groove is matched with 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 of the side wall of the receiving groove itself can be utilized to avoid displacement of the fixed bottom plate 3 with respect to the concrete lining layer 1, so that the application stability of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is better.

[0089] Method of construction of an underground cavern for a compressed air energy storage power plant

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

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

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

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

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

[0095] The construction method of the compressed air energy storage power station underground cavern provided by the embodiment of the present application can form the combined sealing lining structure provided by the embodiment of the present application on the inner side of the concrete lining layer 1 of the compressed air energy storage power station underground cavern, which has a shorter construction period than welding steel plates, is lower in cost, has good sealing performance, and is easy to maintain and replace parts. The air tightness can meet the use requirements under the premise that the fastening performance is guaranteed. In addition, the sealing layer 5 has a short construction period, and the components can be prefabricated, which can save a lot of construction period and is lower in cost compared with the traditional steel plate lining which needs to be welded on site, and the damaged parts can be directly replaced during maintenance.

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

[0097] The accommodating groove is formed on the inner wall of the concrete lining layer 1 at a position corresponding to the fixed bottom plate 3, and the shape of the accommodating groove is matched with that of the fixed bottom plate 3, so that the fixed bottom plate 3 can be embedded in the accommodating groove.

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

[0099] The construction method of the compressed air energy storage power station underground cavern further comprises the following steps:

[0100] The sealing performance of the underground cavern is determined by carrying out a gas storage test on the compressed air energy storage power station underground cavern.

[0101] The possible air leakage points of the compressed air energy storage power station underground cavern are monitored in real time.

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

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

[0104] The monitoring of the possible air leakage points of the underground cavern in real time specifically comprises the following steps:

[0105] The gas flow monitoring instrument is arranged at the possible air leakage point of the compressed air energy storage power station underground cavern, and a position label is arranged for each gas flow monitoring instrument;

[0106] An alarm threshold is set for the gas flow monitoring instrument according to the position of the gas flow monitoring instrument;

[0107] When the gas flow abnormality alarm occurs, the air leakage point of the compressed air energy storage power station underground cavern is determined according to the position label of the gas flow monitoring instrument.

[0108] In this case, once the air leakage occurs at the possible air leakage point of the underground cavern, the air leakage point of the underground cavern can be accurately determined according to the alarm information and the position label of the gas flow monitoring instrument, so that the emergency repair measures can be taken.

[0109] Although the preferred embodiments of the present application have been described, those skilled in the art who, once aware of the basic inventive concept, can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0110] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A combined seal liner structure, characterized by, The skeleton (2), the fixed bottom plate (3) and a plurality of sealing layers (5), The skeleton (2) forms a hollow surface between the skeletons (2), The skeleton (2) is matched with the fixed bottom plate (3), and a sealing layer clamping groove is formed between the skeleton (2) and the fixed bottom plate (3) after the skeleton (2) and the fixed bottom plate (3) are assembled, 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 sealing layers (5) are connected to form the combined sealing lining structure. From the radial section of the skeleton (2), the skeleton (2) includes a first bottom and two first protruding parts, and the two first protruding parts are respectively fixedly connected to the first bottom through one side, so that a first limiting groove is formed between the first bottom and the two first protruding parts. From the radial section of the fixed bottom plate (3), the fixed bottom plate (3) includes a second bottom and two second protruding parts, and the two second protruding parts are respectively fixedly connected to the second bottom through one side, A third protruding part is further arranged in the middle of the second bottom along the circumference of the second bottom, So that two second limiting grooves are respectively formed between the second protruding part, the third protruding part and the second bottom; The third protruding part and the second limiting groove are integrally connected through insertion, so that the first protruding part is accommodated in the second limiting groove, and the sealing layer clamping groove is formed between the first protruding part, the second protruding part and the bottom; Further comprising at least one fourth protruding part, The fourth protruding part is fixedly connected to the second protruding part, and the protruding direction of the fourth protruding part is towards the first protruding part, so that the sealing layer clamping groove has at least one detour.

2. The combined seal liner structure according to claim 1, wherein The skeleton (2) includes 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 hollow surface is formed between adjacent two warp skeletons (21) and adjacent two weft skeletons (22).

3. The combined seal liner structure according to claim 2, wherein Further comprising an arc-shaped skeleton (23), The arc-shaped skeleton (23) is 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 shape 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 cylindrical shape gradually decreases at the two ends in the axial direction to form a dome.

4. The combined seal liner structure according to claim 1, wherein The insertion between the third protruding part and the second limiting groove is a tight fit or an interference fit.

5. The combined seal liner structure according to claim 1, wherein The skeleton (2) and the fixed bottom plate (3) are integrally formed.

6. The combined seal liner structure according to claim 1, wherein Further comprising 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 plant underground cavern, characterized in that, The combined sealing lining structure of any one of claims 1-6, The combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

8. The compressed air energy storage power plant cavern of claim 7, wherein, Further comprising a fastener (7), The fastener (7) is stopped in the concrete lining layer (1) after passing through the framework (2) and the fixed bottom plate (3).

9. The compressed air energy storage power plant cavern of claim 8, wherein, The fastener (7) is an anchor rod.

10. The compressed air energy storage power plant cavern of claim 7, wherein, The inner wall of the concrete lining layer (1) is provided with a receiving groove, The receiving groove is matched with the shape of the fixed bottom plate (3), so that the fixed bottom plate (3) is embedded in the receiving groove.

11. The method of constructing an underground cavern for a compressed air energy storage power plant according to any one of claims 7-10, characterized in that, The method comprises the following steps: The fixed bottom plate (3) is arranged on the inner wall of the compressed air energy storage power station underground cavern; The framework (2) is arranged on the inner wall of the compressed air energy storage power station underground cavern, so that the framework (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the framework (2) and the fixed bottom plate (3), and a hollow surface is formed between the framework (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 sealing layers (5) are connected 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).

12. The method of claim 11, wherein the method further comprises: The compressed air energy storage power station underground cavern is the compressed air energy storage power station underground cavern of claim 10, and the construction method of the compressed air energy storage power station underground cavern further comprises the following steps before the step of arranging the fixed bottom plate (3) on the inner wall of the compressed air energy storage power station underground cavern: 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 matched with the shape of the fixed bottom plate (3), so that the fixed bottom plate (3) can be embedded in the receiving groove.

13. The method of constructing a compressed air energy storage power plant cavern according to claim 11, wherein, The method further comprises the following steps: A gas storage test is carried out on the compressed air energy storage power station underground cavern to determine the sealing performance of the underground cavern; The possible air leakage points of the compressed air energy storage power station underground cavern are monitored in real time.

14. The method of claim 13, wherein the method further comprises: During the step of monitoring the possible air leakage points of the compressed air energy storage power station underground cavern in real time, the possible air leakage points include one or more of the connection between the sealing layer (5) and the fixed bottom plate (3), the connection between the fixed bottom plate (3) and the framework (2), the connection between the fixed bottom plate (3) and the concrete lining layer (1), and the part of the sealing layer (5) itself.

15. The method of claim 13, wherein the method further comprises: The real-time monitoring of the possible air leakage points of the underground cavern comprises the following steps: A gas flow monitoring instrument is arranged at the possible air leakage points of the compressed air energy storage power station underground cavern, and a position label is set for each gas flow monitoring instrument; An alarm threshold is set for the gas flow monitoring instrument according to the position of the gas flow monitoring instrument; When an abnormal gas flow alarm occurs, the air leakage point of the compressed air energy storage power station underground cavern is determined according to the position label of the alarm gas flow monitoring instrument.

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