Simulation test device and system for working condition of gas storage chamber

Abstract

The invention relates to the technical field of gas storage chamber simulation tests, in particular to a gas storage chamber working condition simulation test device and system, and the simulation test device comprises a sealed container, a simulation deformation layer, a simulation lining layer and a sealing layer. The sealing layer, the lining layer and the deformation layer are sequentially attached to the inner wall of the sealed container from inside to outside. The sealed container is made of a rigid material; the sealing container is provided with a pressure channel, and the pressure channel penetrates through the simulation deformation layer and the simulation lining layer to be communicated with an inner cavity of the sealing structure; and the simulation lining layer can be deformed by pressurizing the sealed container through the pressure channel. The sealing container can be detached after the test, the simulation deformation layer and the simulation lining layer can be replaced, the sealing container can be repeatedly and circularly pressurized, and the safety and the air tightness of the sealing structure under the action of high-pressure cyclic load can be monitored and analyzed. The airtight characteristics of different pressures, sealing materials and sealing structures are tested.

Description

Technical Field

[0001] The invention relates to the technical field of gas storage chamber simulation test, and in particular to a simulation test device and system for working conditions of a gas storage chamber. Background Art

[0002] Artificial gas storage chambers are flexible in site selection, have excellent durability and reasonable economy, so most of the compressed air energy storage projects currently under construction and planning adopt artificial gas storage chambers. Combined with the operation process of compressed air energy storage power stations, artificial gas storage chambers need to withstand 10-15Mpa high internal pressure, temperature and pressure coupling, and cyclic load changes. At the same time, under the action of internal pressure, the lining structure of the gas storage chamber and the surrounding rock of the chamber will be damaged to a certain extent. The safety and air tightness of artificial gas storage chambers have a significant impact on the operation safety and power storage efficiency of compressed air energy storage power stations; therefore, it is necessary to study the location and morphological distribution of cracks in the lining structure when the chamber expands and deforms under internal pressure, as well as the changes in the structural integrity and air tightness characteristics of the sealing structure under cracks and gas storage cavern operation conditions. However, there is currently a lack of an effective test device and method that can truly restore the chamber working conditions to study the changes of the above structural characteristics under pressure. Summary of the invention

[0003] The purpose of the present invention is to overcome the technical problem that the prior art cannot achieve true simulation of chamber working conditions to conduct crack and air tightness tests, and to provide a simulation test device and system for gas storage chamber working conditions.

[0004] In the first aspect, the present invention provides a simulation test device for the working conditions of a gas storage chamber, comprising a sealed container, a simulated deformation layer and a simulated lining layer, wherein the simulated deformation layer is attached to the inner wall of the sealed container, and the simulated lining layer is attached to the inner wall of the simulated deformation layer; the sealed container is made of a rigid material; the sealed container is provided with a pressure channel, which passes through the simulated deformation layer and the simulated lining layer and is connected with the inner cavity of the sealed container; applying pressure to the sealed container through the pressure channel can cause the simulated lining layer to be deformed under force and compress the simulated deformation layer.

[0005] The present application simulates the structure of a gas storage chamber by setting a layered structure in a sealed container. For example, a simulated deformation layer is set on the inner wall of the sealed container. The simulated deformation layer can simulate the surrounding rock layer together with the outer rigid container. The compression of the deformation layer is used to simulate the compression deformation of the surrounding rock under inflation. The outer rigid container can also serve as an outer boundary protection layer. The simulated deformation layer can provide compression deformation for the concrete lining. A simulated lining layer is set on the inner side of the simulated deformation layer, which is equivalent to the concrete lining in the chamber structure. It can deform and compress the simulated deformation layer when subjected to internal pressure, and it can also crack and form cracks after being compressed. A simulated sealing layer (i.e., inner lining layer) can be optionally set on the inner side of the simulated lining layer. The simulated sealing layer can be sprayed into a closed inner liner using an inner mold, or it can be directly sprayed and vulcanized and bonded to the inner side of the simulated lining layer to form a sealed inner liner. The inner cavity of the sealed liner can be repeatedly pressurized through the pressure channel on the sealed container, and the safety and airtightness of the gas storage chamber composite structure and the inner sealing structure under the high-pressure cyclic load at the crack can be further monitored and analyzed; the sealed container can be disassembled after the test to replace the internal simulated deformation layer and simulated lining layer. Compared with the current indoor model test of small gas storage chambers, which cannot effectively simulate the actual pressurization process and cannot be repeated many times, the test device of this application can be repeatedly used to test the airtight characteristics of different pressures and sealing materials and sealing structures. It provides experimental data and theoretical basis for the experimental research on the composite structure of artificial caverns for compressed air energy storage.

[0006] Preferably, the sealed container comprises two butted cylinders, the cylinders comprise a straight cylinder and a head that are fixedly connected, and the simulated deformation layer is arranged in the two butted straight cylinders; the simulated lining layer comprises two lining end heads and a plurality of lining segments, the plurality of lining segments are butted against each other and closely attached to the inner side of the simulated deformation layer, and the two lining end heads are respectively arranged correspondingly to the two heads.

[0007] The sealed container can be sealed and disassembled by connecting two cylinders. The deformable deformation layer and lining section are set in the straight cylinder. When pressurized, the lining section can expand and deform along the radial direction of the straight cylinder, and then compress the deformation layer, thereby simulating the deformation mode of the concrete lining in the actual gas storage chamber. Dividing the simulated lining layer into multiple lining sections can also simulate the pressure and sealing performance of the concrete lining at the joints in the actual gas storage chamber, while the cylinder head and lining end remain stable during the pressurization test.

[0008] Preferably, a rigid filling layer is provided between the lining end head and the sealing head.

[0009] A rigid filling layer can be filled in the gap between the lining end and the end cap to further improve the stability of the lining end cap and avoid longitudinal expansion and fracturing when under pressure. Here, the rigid filling layer can be a solid vulcanized rubber plate.

[0010] Preferably, a plurality of deformation holes are arranged in the simulated deformation layer. The deformation holes can be in the form of circular, door-shaped, triangular and teardrop-shaped gaps, etc. By reserving gaps or filling low-modulus materials, the deformation layer structure is compressed and deformed under the action of high internal pressure, and the axial direction of the deformation hole is consistent with the axial direction of the cylinder.

[0011] Holes can be opened axially in the simulated deformation layer to increase the deformation of the simulated lining layer. When the simulated lining layer expands radially under internal pressure, the space in the deformation holes can be used to radially compress the deformation holes to further increase the deformation of the simulated deformation layer. The deformation characteristics of the simulated lining layer can be made more significant in the test, which is more conducive to observation and analysis after the test.

[0012] Preferably, a gap may be reserved or no gap may be reserved between two adjacent lining sections.

[0013] During the test, gaps are also reserved between the lining sections. During the test, the gaps may not be filled, so that the sealing performance of the sealing structure at the gap when it is under pressure can be tested. The sealing performance of the sealing liner at the gap and the state of being squeezed out of the gap can also be tested.

[0014] Preferably, a sealing member is provided in the gap.

[0015] During the test, the gaps between the lining sections may also be filled with sealants, such as rubber or other caulking materials, to test the sealing effect of the sealants on the gaps when under pressure.

[0016] Preferably, the inner wall of the simulated lining layer is provided with an inner lining layer.

[0017] The inner wall of the simulated lining layer can be provided with an inner lining as a sealing layer, and the sealing performance of the inner lining under internal pressure can be tested; here, the inner lining layer can be processed according to different sealing materials initially proposed for the test, such as rubber lining, polymer lining, steel lining, composite structure lining, etc. The polymer lining is such as glass fiber reinforced plastic, and the composite structure lining is such as a fiber-wound tank structure, and the epoxy resin material is sprayed and brushed from the inside for sealing.

[0018] Preferably, a strain gauge is provided on the inner lining layer.

[0019] By attaching strain gauges on the inner lining layer, the strain parameters of the inner lining layer when subjected to pressure during the test can be measured.

[0020] Preferably, a sensor is provided on the sealed container, and the sensor is connected to the pressure channel.

[0021] Sensors are arranged at the pressure channel to monitor the temperature, pressure and strain of the sealed container and the test device during the test. Here, the sensor can be a fiber grating sensor. A distributed optical fiber is arranged on the outside of the test device. The distributed optical fiber is installed on the outside of the test device. Multiple monitoring rings are arranged. The monitoring rings can be arranged on the straight tube of the test device, arranged at the end and middle of the straight tube, and used to monitor the strain changes of each ring. One end of the distributed optical fiber is connected to the light source, and the other end is connected to the receiving hole of the monitoring optical fiber installation steel pipe. After the internal optical fiber is arranged, a light outlet device is arranged between the lining sections, and the optical fiber is led out from the sealed inner tank and the sealing ring of the optical fiber outlet hole is used to ensure air tightness.

[0022] In a second aspect, the present invention provides a simulation test system for working conditions of a gas storage chamber, comprising a gas source and the simulation test device for working conditions of a gas storage chamber as described above, wherein the gas source is connected to the pressure channel.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a simulation test device and system for the working condition of a gas storage chamber, which simulates the structure of the gas storage chamber by arranging a layered structure in a sealed container. For example, a simulated deformation layer can simulate a surrounding rock layer together with an outer rigid container, and the compression of the deformation layer is used to simulate the compression deformation of the surrounding rock under inflation. The outer rigid container can also serve as an outer boundary protection layer. The simulated deformation layer can provide compression deformation for the concrete lining. A simulated lining layer is arranged on the inner side of the simulated deformation layer, which is equivalent to the concrete lining in the chamber structure. It can deform and compress the simulated deformation layer when subjected to internal pressure, and can also crack and form cracks after being compressed. A simulated sealing layer (i.e., an inner lining layer) can be optionally arranged on the inner side of the simulated lining layer. The simulated sealing layer can be sprayed into a closed inner liner using an inner mold, or can be directly sprayed and vulcanized and bonded on the inner side of the simulated lining layer to form a sealed inner liner. The inner cavity of the sealed liner can be repeatedly pressurized through the pressure channel on the sealed container, and the safety and airtightness of the gas storage chamber composite structure and the inner sealing structure under the high-pressure cyclic load at the crack can be further monitored and analyzed; the sealed container can be disassembled after the test to replace the internal simulated deformation layer and simulated lining layer. Compared with the current small-scale indoor model test of the gas storage chamber, it cannot effectively simulate the actual pressurization process, and the test cannot be repeated many times. The test device of this application can be used repeatedly to test the airtight characteristics of different pressures and sealing materials and sealing structures. It provides experimental data and theoretical basis for the experimental research on the composite structure of artificial caverns for compressed air energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional schematic diagram of a simulation test device for the working conditions of a gas storage chamber of the present invention.

[0026] Figure 2The simulation test device for the working condition of the gas storage chamber of the present invention is Figure 1 Overall cross-sectional view at “AA” in the figure.

[0027] Figure 3 for Figure 1 A partial enlarged view of point B in the middle.

[0028] Figure 4 It is a schematic diagram of a simulation test system for the working conditions of a gas storage chamber of the present invention.

[0029] Markings in the figure:

[0030] 1. Sealed container, 11. Straight cylinder, 12. Head, 13. Pressure channel, 14. Flange, 15. Bolt, 16. Sealing ring, 2. Simulated deformation layer, 21. Deformation hole, 3. Simulated lining layer, 31. Lining section, 311. Gap, 32. Lining end, 33. Seal, 4. Inner lining layer, 5. Rigid filling layer, 6. Gas source, 7. Gas pipeline, 8. Pressure gauge, 9. Pressure relief valve. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Example 1

[0038] This embodiment provides a simulation test device for the working conditions of a gas storage chamber.

[0039] Figure 1 It is a cross-sectional schematic diagram of a simulation test device for the working condition of a gas storage chamber of the present invention; Figure 2 The simulation test device for the working condition of the gas storage chamber of the present invention is Figure 1 Overall cross-sectional view at "AA" in the figure; Figure 3 for Figure 1 A partial enlarged view of point B in the middle; Figure 4 It is a schematic diagram of a simulation test system for the working conditions of a gas storage chamber of the present invention.

[0040] like Figures 1 to 4 As shown in , the simulation test device for the working condition of the gas storage chamber described in this embodiment may include a sealed container 1, a simulated deformation layer 2 and a simulated lining layer 3. The simulated deformation layer 2 is attached to the inner wall of the sealed container 1, and the simulated lining layer 3 is attached to the inner wall of the simulated deformation layer 2, and the simulated sealing layer can be attached to the inner wall of the simulated lining layer 3; a pressure channel 13 is opened on the sealed container 1, and the pressure channel 13 passes through the simulated deformation layer 2 and the simulated lining layer 3 and is connected with the inner cavity of the sealed inner liner; applying pressure to the sealed inner liner through the pressure channel 13 can deform the simulated lining layer 3 and compress the simulated deformation layer 2; here, the simulated deformation layer 2 can be an elastic material such as rubber, which can be compressed and deformed when under pressure, and can use elasticity to restore to its original state after the pressure is released. The simulated lining layer 3 can be cast by concrete, and steel bars may or may not be provided in the simulated lining layer 3. That is to say, the simulated lining layer 3 is plain concrete, which can be selected according to actual test conditions.

[0041] The structure of the gas storage chamber can be simulated by setting a layered structure in the sealed container 1. For example, a simulated deformation layer 2 is set on the inner wall of the sealed container 1, which is equivalent to the surrounding rock layer in the chamber structure and can provide deformation margin for the concrete lining. A simulated lining layer 3 is set on the inner side of the simulated deformation layer 2, which is equivalent to the concrete lining in the chamber structure. It can deform and compress the simulated deformation layer 2 when subjected to internal pressure, and it can also crack after being compressed. The pressure channel 13 on the sealed container 1 can be repeatedly pressurized into the inner cavity of the sealed liner for multiple cycles, and the safety and air tightness of the gas storage chamber combination structure and the sealing structure under high-pressure cyclic loads at the cracks can be further monitored and analyzed; compared with the current small-scale gas storage chamber indoor model test, it cannot effectively simulate the actual pressurization process, and the test cannot be repeated multiple times. The test device of this application can be used repeatedly to test the airtight characteristics of different pressures and sealing materials and sealing structures. It provides experimental data and theoretical basis for the experimental research on the composite structure of artificial caverns for compressed air energy storage.

[0042] In this embodiment, the sealed container 1 may include two butted cylinders, the cylinders include a straight cylinder 11 and a head 12 that are fixedly connected, and the simulated deformation layer 2 is arranged in the two butted straight cylinders 11; the simulated lining layer 3 includes two lining end heads 32 and a plurality of lining segments 31, the plurality of lining segments 31 are butted against each other and closely attached to the inner side of the simulated deformation layer 2, and the two lining end heads 32 are respectively arranged corresponding to the two head heads 12; specifically, the head head 12 may be a hemispherical head 12, or an ellipsoidal head or other forms of head that meet the corresponding pressure requirements; when the two cylinders are butted, the two straight cylinders 11 can be connected and communicated with each other, the head 12 can be located at both ends of the two straight cylinders 11 to close the two straight cylinders 11, and the two straight cylinders 11 can be connected by flanges 14 and bolts 15, that is, both straight cylinders 11 are provided with flanges 14, and when connected , the flanges 14 on the two straight cylinders 11 can be butt-jointed, and then the bolts 15 can be passed through the two flanges 14 to connect the two cylinders. A sealing ring 16 can also be arranged between the flanges 14 of the two cylinders for sealing to prevent the pressure from leaking from the connecting surface between the flanges 14 of the two cylinders when the cylinders are under pressure; here, the cylinder can be a steel cylindrical structure, that is, the straight cylinder 11 can be a steel cylinder, and the head 12 can be a hemispherical head 12. The straight cylinder 11 and the head 12 can be fixedly connected by welding and sealed between the two. After the two cylinders are butt-jointed, a "capsule"-type container can be formed, but the present invention is not limited to this. The material of the cylinder and the connection method between the straight cylinder 11 and the head 12 can also be other types, for example, the straight cylinder 11 and the head 12 are connected by integral molding, etc., and the present invention does not make specific limitations on this.

[0043] The simulated deformation layer 2 covers the inner walls of the two straight cylinders 11, and the joints between the two straight cylinders 11 can also be sealed; multiple lining segments 31 are sequentially terminated and connected and installed on the inner side of the simulated deformation layer 2, so that the outer walls of the multiple lining segments 31 can be tightly attached to the inner wall of the simulated deformation layer 2. Specifically, the lining segment 31 can be formed into a precast concrete annular structure; the shapes of the two lining end heads 32 can correspond to the shape of the end cap 12, and the lining end heads 32 are connected to the upper and lower ends of the multiple lining segments 31, so that the internal space formed by the multiple lining segments 31 can be closed and penetrated into the end cap 12. During the test pressurization, the sealing end head 12 of the sealed container 1 cannot produce relative movement, and the internal lining end head 32 and the end cap 12 can remain fixed without relative movement. Therefore, the model and the sealed liner will not produce large longitudinal displacement, and the deformation of the sealed liner is mainly radial expansion, which is basically consistent with the radial expansion deformation under the inflation condition during the operation of the gas storage cavern. Here, the sealed liner is a simulated lining layer 3 and an inner lining layer 4 arranged in a sealed container 1 .

[0044] The sealed container 1 can be sealed and disassembled by connecting two cylinders, and the deformable deformation layer and lining segment 31 are arranged in the straight cylinder 11. When pressurized, the lining segment 31 can expand and deform along the radial direction of the straight cylinder 11, and then compress the deformation layer, so as to restore the deformation mode of the concrete lining in the actual gas storage chamber. The simulated lining layer 3 can adopt a single prefabricated lining ring segment or be divided into multiple lining segments 31. Joints can be reserved between the multiple lining segments to simulate the pressure and sealing performance of the concrete lining at the joints in the actual gas storage chamber, and the cylinder head 12 and the lining end 32 remain stable during the pressure charging test.

[0045] In this embodiment, a rigid filling layer 5 is provided between the lining end 32 and the end cap 12; the rigid filling layer 5 can be filled in the gap 311 between the lining end 32 and the end cap 12 to further improve the stability of the lining end cap 12 and avoid expansion and fracturing when under pressure. Here, the rigid filling layer 5 can be a solid vulcanized rubber plate. In addition, the rigid filling layer 5 can also be a structure of other materials, such as a rigid metal material. When the sealed container 1 is pressurized, the internal pressure can apply axial pressure to the lining end 32, and the rigid filling layer 5 and the end cap 12 can resist the axial pressure to avoid deformation of the lining end 32. Of course, when the lining end 32 is installed in the end cap 12, if the lining end 32 can directly contact the end cap 12, that is, there is no gap between the lining end 32 and the end cap 12, then there is no need to fill the rigid filling layer 5, and the end cap 12 can be directly used to keep the lining end 32 stable.

[0046] In this embodiment, a plurality of deformation holes 21 are arranged in the simulated deformation layer 2, and the axial direction of the deformation holes 21 is consistent with the axial direction of the cylinder; holes can be opened in the simulated deformation layer 2 along the axial direction to increase the deformation margin of the simulated lining layer 3. When the simulated lining layer 3 expands radially under internal pressure, the space of the deformation holes 21 can be utilized to radially compress the deformation holes 21, which can further increase the deformation amount of the simulated deformation layer 2. The deformation characteristics of the simulated lining layer 3 can be made more significant in the test, which is more conducive to observation and analysis after the test; here, a plurality of deformation holes 21 can be arranged circumferentially in the simulated deformation layer 2, and the number of holes and the size of the holes can be selected according to actual test requirements, and the present invention does not make specific limitations on this.

[0047] Optionally, a gap 311 is formed between adjacent lining sections 31; gaps may also be left between the lining sections 31 during the test, so that the sealing performance of the sealing liner at the joint under the conditions of simulated deformation layer 2 and simulated lining layer 3 expansion deformation when under pressure can be tested, and the state of the sealing liner being squeezed out of the gap can also be tested.

[0048] Optionally, a seal 33 is provided in the gap 311; the gaps between the lining sections 31 may also be filled with a seal 33, such as rubber or metal, etc., and the sealing effect of the seal 33 on the gap under pressure may be tested.

[0049] In this embodiment, the inner wall of the simulated lining layer 3 is provided with an inner lining layer 4; the inner lining can be provided on the inner wall of the simulated lining layer 3 as a sealing layer, and the sealing performance of the inner lining under internal pressure can be tested; here, the inner lining layer 4 can be processed according to different sealing materials initially prepared for the test, such as rubber lining, polymer lining, steel lining, combined structure lining, etc. The polymer lining is such as glass fiber reinforced plastic, and the combined structure lining is such as a fiber wound tank structure from which epoxy resin material is sprayed and brushed for sealing; the present invention does not specifically limit the specific material and structural form of the inner lining layer 4.

[0050] Specifically, the inner lining layer 4 can be made of polyurethane sealing materials, butyl rubber, EPDM rubber, silicone rubber and other rubbers, polyurea, fiberglass and epoxy resin to form a composite material, steel, stainless steel, aluminum alloy, ETFE polymer film, or even special polymer materials, such as polyurethane, epoxy resin, bentonite polymers, etc. Any material with a certain high-pressure airtightness can be used as a sealing inner lining layer, and the present invention is not limited to this.

[0051] In this embodiment, a strain gauge is provided on the inner lining layer 4. By attaching the strain gauge on the inner lining layer 4, the strain parameter of the inner lining layer 4 when subjected to pressure in a test can be measured.

[0052] Optionally, a sensor (not shown in the figure) is provided on the sealed container 1, and the sensor is connected to the pressure channel 13; the sensor is provided at the pressure channel 13, so that the temperature, pressure and strain monitoring of the test device in the sealed container 1 can be realized during the test. Here, the sensor can be a fiber grating sensor, and a distributed optical fiber is arranged outside the test device, and the distributed optical fiber is installed outside the test device. A plurality of monitoring rings are arranged, and the monitoring rings can be arranged on the straight tube of the test device, arranged at the end and the middle position of the straight tube, and used to monitor the strain changes of each ring. One end of the distributed optical fiber is connected to the light source, and the other end is connected to the receiving hole of the monitoring optical fiber installation steel pipe. After the internal optical fiber is arranged, a light outlet device is arranged between the lining sections, and the optical fiber is correspondingly led out from the sealed inner tank and the sealing ring of the optical fiber outlet hole is used to ensure air tightness.

[0053] Example 2

[0054] This embodiment provides a simulation test system for the working conditions of a gas storage chamber.

[0055] The simulation test system for the working condition of the gas storage chamber described in this embodiment may include a gas source 6 and a simulation test device for the working condition of the gas storage chamber as described in Example 1, and the gas source 6 is connected to the pressure channel 13 on the sealed container 1; here, the gas source 6 can be a customized press, such as an air compressor, etc., which can be connected to the pressure channel 13 through the gas pipeline 7, and the air can be input into the sealed container 1 along the gas pipeline 7 and the pressure channel 13 to pressurize the sealed container 1, and the pressure value in the sealed container 1 can be controlled to meet the test requirements. The gas pipeline 7 can also be provided with components such as a pressure gauge 8 and a pressure relief valve 9; during the test, the gas source 6 can be opened to charge the sealed container 1 with pressure. After the pressure reaches the test pressure, the gas source 6 can be closed, and the pressure relief valve 9 can be kept closed at the same time, so that the sealed container 1 can be pressurized. After the pressure is maintained for a sufficient test time, the pressure relief valve 9 is opened to release the pressure, so that the pressure in the sealed container 1 returns to normal pressure.

[0056] It should be noted that the simulation test device for the working condition of the gas storage chamber described in this embodiment is consistent with the simulation test device for the working condition of the gas storage chamber described in Example 1, and this embodiment will not be further described in detail.

[0057] In summary, the simulation test device for the working condition of the gas storage chamber of the present invention can simulate the structure of the gas storage chamber by setting a layered structure in a sealed container. For example, a simulated deformation layer is set on the inner wall of the sealed container to simulate the actual stratum together with the external rigid structure. It has the ability to simulate the compression deformation of the surrounding rock under the premise of safety, and can provide expansion deformation for the concrete lining. A simulated lining layer is set on the inner side of the simulated deformation layer, which is equivalent to the concrete lining in the chamber structure. It can deform and compress the simulated deformation layer when subjected to internal pressure, and can also crack after being compressed. The sealing material and form to be used in the gas storage cavern can be adopted through the sealing layer on the inner side of the lining. The pressure channel on the sealed container can be used to repeatedly pressurize the inner cavity of the sealed container for multiple cycles. The deformation and cracking of the combined structure of the gas storage chamber can be further monitored and analyzed, and the safety and air tightness of the sealing structure under the action of high-pressure cyclic load at the crack can be tested. Compared with the current indoor model test of small gas storage chambers, it cannot effectively simulate the actual pressurization process, and the test cannot be repeated multiple times. The test device of this application can be used repeatedly to test the airtight characteristics of different pressures, sealing materials and sealing structures, and provides test data and theoretical basis for the experimental research on the composite structure of artificial cavern for compressed air energy storage.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A simulation test device for the working conditions of a gas storage chamber, characterized in that: The invention comprises a sealed container (1), a simulated deformation layer (2) and a simulated lining layer (3), wherein the simulated deformation layer (2) is attached to the inner wall of the sealed container (1), and the simulated lining layer (3) is attached to the inner wall of the simulated deformation layer (2); the sealed container (1) is made of a rigid material; The sealed container (1) is provided with a pressure channel (13), and the pressure channel (13) penetrates the simulated deformation layer (2) and the simulated lining layer (3) and is connected to the inner cavity of the simulated lining layer (3); by applying pressure to the sealed container (1) through the pressure channel (13), the simulated lining layer (3) can be deformed by force and the simulated deformation layer (2) can be compressed.

2. The simulation test device for the working condition of the gas storage chamber according to claim 1 is characterized in that: The sealed container (1) comprises two butt-jointed cylinders, the cylinders comprising a straight cylinder (11) and a head (12) which are fixedly connected, the simulated deformation layer (2) being arranged in the two butt-jointed straight cylinders (11); the simulated lining layer (3) comprising two lining end heads (32) and a plurality of lining segments (31), the plurality of lining segments (31) being butt-jointed with each other and closely attached to the inner side of the simulated deformation layer (2), the two lining end heads (32) being arranged correspondingly to the two head heads (12) respectively.

3. The simulation test device for the working condition of the gas storage chamber according to claim 2, characterized in that: A rigid filling layer (5) is provided between the lining end head (32) and the sealing head (12).

4. The simulation test device for the working condition of the gas storage chamber according to claim 2, characterized in that: A plurality of deformation holes (21) are arranged in the simulated deformation layer (2), and the axial direction of the deformation holes (21) is consistent with the axial direction of the cylinder.

5. The simulation test device for the working condition of the gas storage chamber according to claim 2, characterized in that: There is a gap (311) between two adjacent lining sections (31).

6. The simulation test device for the working condition of the gas storage chamber according to claim 5, characterized in that: A sealing member (33) is provided in the gap (311).

7. The simulation test device for the working condition of the gas storage chamber according to any one of claims 1 to 6, characterized in that: The inner wall of the simulated lining layer (3) is provided with an inner lining layer (4).

8. The simulation test device for the working condition of the gas storage chamber according to claim 7, characterized in that: The inner lining layer (4) is provided with a strain gauge.

9. The simulation test device for the working condition of the gas storage chamber according to any one of claims 1 to 6, characterized in that: The sealed container (1) is provided with a sensor, and the sensor is connected to the pressure channel (13).

10. A simulation test system for working conditions of a gas storage chamber, characterized in that: A simulation test device comprising a gas source (6) and the working condition of a gas storage chamber as claimed in any one of claims 1 to 9, wherein the gas source (6) is connected to the pressure channel (13), and the gas source (6) can pressurize the simulation test device.

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