Compressed air storage cavern structure

Abstract

The invention relates to a compressed air storage cavern structure which comprises a drainage layer, a sprayed concrete layer, a reinforced concrete lining layer, a sliding layer and a sealing layer which are sequentially arranged in the direction from outside to inside, and a space used for storing compressed air is formed in the inner side of the sealing layer. Partition walls are arranged in the space on the inner side of the sealing layer to divide the space on the inner side of the sealing layer into a plurality of cavities, balance pipelines are embedded in the partition walls to communicate the adjacent cavities, electric control valves are arranged on the balance pipelines to control connection and disconnection of the balance pipelines, and an air pressure detection element is arranged in each cavity. The compressed air storage cavern structure is high in pressure bearing capacity and high in stability.

Description

Technical Field

[0001] The invention relates to the technical field of compressed air energy storage, and in particular to a compressed air storage tank structure. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] With the rapid development of renewable energy, compressed air energy storage technology (CAES) has received widespread attention as an emerging energy storage method. Compressed air energy storage systems are usually composed of underground gas storage, compressors, expanders and generators. Its core working principle is to convert excess electrical energy into compressed air for storage, and release compressed air to drive the generator to generate electricity when electricity is needed. However, the sealing of the gas storage directly affects the gas storage efficiency and the safety of the system.

[0004] Patent CN222066842U honeycomb structure honeycomb gas storage units and honeycomb and outer lining shell are connected by filling materials. Long-term use of material aging affects the service life of the structure. There is a problem of insufficient sealing. The honeycomb unit directly relies on the filling material to withstand the pressure. The force distribution between the honeycomb units may be uneven, affecting the stability of the structure. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a compressed air storage structure that overcomes the defects of the current compressed air storage cavern structure.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] An embodiment of the present invention provides a compressed air storage structure, which includes a drainage layer, a shotcrete layer, a reinforced concrete lining layer, a sliding layer and a sealing layer arranged in sequence from the outside to the inside. A space for storing compressed air is formed inside the sealing layer. The space inside the sealing layer is provided with a partition wall to divide the space inside the sealing layer into multiple chambers. The partition wall is pre-buried with a balancing pipe to connect adjacent chambers to each other. An electric-controlled valve is provided on the balancing pipe to control the conduction and disconnection of the balancing pipe. An air pressure detection element is provided in each chamber.

[0008] Optionally, the sliding layer is an asphalt sliding layer;

[0009] Furthermore, the thickness of the sliding layer is 5cm-10cm.

[0010] Optionally, the sealing layer includes an outer layer and an inner layer, the outer layer is a polymer coating containing polyurea-formaldehyde microcapsules inside which epoxy resin repairing agent is encapsulated, and the inner layer is a polymer aerogel film.

[0011] Furthermore, the thickness of the outer layer is 5mm-10mm, and the thickness of the inner layer is 2mm-3mm.

[0012] Optionally, a flexible support layer is provided between the reinforced concrete lining layer and the sliding layer;

[0013] Furthermore, the flexible supporting layer is a butyl rubber layer.

[0014] Optionally, the thickness of the reinforced concrete lining layer is 30cm-40cm.

[0015] Optionally, the thickness of the shotcrete layer is 15 cm-25 cm.

[0016] Optionally, pressure detection elements are provided in the sealing layer and the reinforced concrete lining layer. Along the length direction of the compressed air storage structure, the pressure detection elements are arranged in multiple groups, each group is arranged at a set distance and has multiple pressure detection elements distributed along the contour line of the compressed air storage.

[0017] Optionally, a plurality of optical fiber temperature and humidity sensors are arranged on the inner side of the sealing layer along the contour line of the compressed air storage structure.

[0018] Optionally, a plurality of heat exchange tubes are arranged on the inner side surface of the sealing layer along the contour line of the compressed air reservoir, and the heat exchange tubes are connected to a heat exchange circulation system.

[0019] Optionally, the partition wall is a reinforced concrete wall.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The compressed air storage structure of the present invention is provided with a partition wall to divide the internal space of the sealing layer into a plurality of independent chambers to form a honeycomb structure. The partition wall adopts a reinforced concrete structure with a long service life. The adjacent chambers are connected through a balancing pipe, which can make each chamber evenly stressed. Since each chamber is evenly stressed, the mechanical stability of the entire gas storage system is improved. In addition, the design of the honeycomb structure enables each chamber to more effectively withstand changes in air pressure without local instability or rupture, thereby improving the maximum pressure bearing capacity of the entire structure. This design of uniform stress and high pressure bearing capacity directly improves the safety and accommodation capacity of the compressed air storage. At the same time, the honeycomb structure helps to evenly distribute the internal temperature and avoid drastic temperature fluctuations, especially under high pressure environments, through the layout of multiple independent chambers. The addition of temperature and humidity sensors and heat exchange tubes further optimizes this and helps maintain a stable chamber temperature. Therefore, the design of the honeycomb structure not only improves the mechanical properties of the gas storage system, but also enhances the stability of its temperature control.

[0022] 2. The compressed air storage structure of the present invention adopts a double-layer structure for the sealing layer, wherein the outer layer adopts a polymer coating and the inner layer adopts a polymer aerogel film. Such a double-layer sealing structure greatly improves the air tightness of the cavity and reduces the possibility of gas leakage, thereby improving the air tightness and energy storage efficiency of the gas storage. Meanwhile, the polymer coating contains polyurea-formaldehyde microcapsules, and the polyurea-formaldehyde microcapsules encapsulate epoxy resin repairing agents. When cracks appear, the microcapsules can rupture and automatically release the repairing agent for repair, thereby significantly extending the service life of the sealing material and improving the long-term stability of the compressed air storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0025] Among them, 1. surrounding rock, 2. drainage layer, 3. shotcrete layer, 4. reinforced concrete lining layer, 5. sliding layer, 6. outer layer, 7. inner layer, 8. optical fiber temperature and humidity sensor, 9. pressure sensor, 10. heat exchange tube, 11. condensate recovery system, 12. partition wall. DETAILED DESCRIPTION

[0026] Example 1

[0027] This embodiment provides a compressed air storage structure, such as Figure 1As shown, a drainage layer 2, a shotcrete layer 3, a reinforced concrete lining layer 4, a flexible support layer, a sliding layer 5 and a sealing layer are sequentially arranged from the outside to the inside. The sealing layer adopts a double-layer structure, including an outer layer 6 and an inner layer 7 sequentially arranged from the outside to the inside. The space inside the inner layer 7 is used as a storage space for compressed air. A partition wall 12 is provided on the inner side of the inner layer of the sealing layer. The partition wall 12 divides the space inside the inner layer into a plurality of independent chambers to form a honeycomb structure for storing compressed air.

[0028] In the honeycomb structure of this embodiment, the cross-section of each chamber is a regular hexagon, preferably with a side length of 2m-3m. In this embodiment, the edge of each chamber shares a partition wall 12 with the adjacent chamber. In this embodiment, the partition wall 12 is a reinforced concrete partition wall with a thickness of 0.5m-1m.

[0029] A balancing pipe is pre-buried in the partition wall 12, through which two adjacent chambers can be connected to each other. In this embodiment, the inner diameter of the balancing pipe is 20 cm, and an electric valve is provided on the balancing pipe. The electric valve is connected to the control system, and the conduction and disconnection of the balancing pipe are controlled by the electric valve.

[0030] An air pressure sensor is installed in each chamber. The air pressure sensor is connected to the control system and is used to detect the air pressure in the chamber. The electric valve is controlled according to the detection data of the air pressure sensor to achieve pressure balance between chambers.

[0031] In this embodiment, the pressure of each chamber can be monitored and adjusted in real time through the air pressure sensor to ensure that the pressure in each chamber is evenly distributed, avoid structural stress caused by uneven pressure, and enhance the stability of the gas storage.

[0032] In this embodiment, a honeycomb structure is adopted. Compared with the traditional first chamber compressed air storage tank, the force inside the compressed air storage tank is more uniform, the maximum pressure that the entire chamber can withstand is greater, the stability of the chamber structure is improved, and the chamber temperature can be better maintained.

[0033] Generally speaking, the compressed air energy storage pressure range is 7MPa-10MPa. The chamber of this embodiment is designed as a honeycomb structure, which can withstand a greater pressure, so the pressure setting monitoring range is 8MPa-10Mpa.

[0034] When the pressure exceeds the upper pressure limit by 2 kPa (overpressure alarm) or is lower than the lower pressure limit by 1 kPa (low pressure alarm), the system activates the alarm system to sound and light alarms, and starts pressure relief or pressure balance in multiple chambers.

[0035] In this embodiment, the drainage layer 2 is arranged inside the surrounding rock 1, which is composed of natural rock or artificial filling and has strong natural stability. During construction, the stability of the surrounding rock must be fully checked to ensure that the cavity will not be affected by external geological changes during the gas storage process.

[0036] The drainage layer 2 is arranged between the surrounding rock 1 and the shotcrete layer 3, and its function is to prevent groundwater from penetrating into the chamber, thereby ensuring the dryness of the environment in the chamber.

[0037] The drainage layer 2 includes a water-conducting layer and a plurality of drainage pipes distributed along the outer contour of the compressed air reservoir. The water-conducting layer is a gravel layer. The drainage pipe is buried inside the gravel layer. The pipe wall of the drainage pipe is provided with a plurality of water inlets. When arranging the drainage pipe, it is necessary to ensure the smooth flow of water. A reasonable slope is set to ensure the smooth flow of water. The specific slope can be adjusted according to the geological survey data, which will not be described in detail here.

[0038] The drainage pipe at the bottom of the compressed air reservoir is connected to the external water storage tank and is provided with a steam trap or an electric drainer to form a condensate recovery system 11. The steam trap and the electric drainer can be existing equipment and will not be described in detail here.

[0039] After the drainage layer 2 is laid, the sprayed concrete layer 3 located inside the drainage layer 2 is constructed immediately. The sprayed concrete layer 3 is mainly used to enhance the initial support strength of the structure and provide a foundation for the subsequent reinforced concrete lining layer. The thickness of the sprayed concrete layer 3 is 15cm-25cm to ensure its strength and impermeability. The specific thickness can be determined according to actual conditions and will not be described in detail here.

[0040] After the construction of the shotcrete layer 3 is completed, the construction of the reinforced concrete lining layer 4 located inside it begins. The function of the reinforced concrete lining layer 4 is to further strengthen the structure and withstand the gas pressure in the wall and the external pressure of the surrounding rock mass. The thickness of the reinforced concrete lining layer 4 is 30cm-40cm. It uses steel-reinforced concrete and has strong compression and crack resistance.

[0041] After the construction of the reinforced concrete lining layer 4 is completed, a flexible support layer is laid on the inner side thereof. The flexible support layer adopts a butyl rubber layer, and the thickness of the butyl rubber layer is 5cm-10cm.

[0042] A sliding layer 5 is laid inside the butyl rubber layer. In this embodiment, the sliding layer 5 is an asphalt sliding layer. The function of the sliding layer 5 is to prevent the stress conduction caused by temperature change or settlement of the structure and reduce the influence of external factors on the stability of the cavity. The sliding layer 5 is an asphalt sliding layer, which mainly reduces friction and provides anti-corrosion protection for the sealing layer. The thickness of the sliding layer is 5 cm to 10 cm.

[0043] A sealing layer is provided on the inner side of the sliding layer. The sealing layer adopts a double-sided structure, including an outer layer 6 and an inner layer 7. The outer layer 6 is laid on the inner side of the sliding layer 5, and the inner layer 7 is arranged on the inner side of the outer layer 6 to ensure that the gas in the chamber will not leak and can withstand the pressure of the gas.

[0044] In this embodiment, the outer layer 6 adopts a spray-type polymer coating, such as a modified epoxy resin composite material layer. The modified epoxy resin composite material can be made of existing materials, which will not be described in detail here. The polymer coating is used to enhance the air tightness of the interface between the bedrock and the gas outlet. Preferably, the thickness of the polymer coating is 5mm-10mm. The inner layer uses a polymer aerogel film to further improve the barrier performance. The thickness of the inner layer is 2mm-3mm.

[0045] Furthermore, the outer polymer coating is mixed with a microcapsule structure, preferably, polyurea-formaldehyde microcapsules are mixed therein, the diameter of the polyurea-formaldehyde microcapsules is 0.1 mm-1 mm, and epoxy resin repairing agent is encapsulated in the microcapsule structure.

[0046] When microcracks occur in the sealing layer, the microcapsule structure ruptures and releases the epoxy resin repair agent, achieving self-repairing function.

[0047] The sealing layer of this embodiment adopts a double-layer design, which greatly improves the airtightness of the chamber and reduces the possibility of gas leakage, thereby improving the airtightness and energy storage efficiency of the gas storage. At the same time, the introduced microcapsule structure can automatically release a repair agent to repair microcracks when they appear, which significantly extends the service life of the sealing material and improves the long-term stability of the system.

[0048] The compressed air storage structure of this embodiment also includes a monitoring system, which includes a pressure sensor, an optical fiber temperature and humidity sensor, and a temperature control system.

[0049] In this embodiment, the sealing layer and the reinforced concrete lining layer 4 and each chamber are provided with pressure sensors 9. Along the length direction of the compressed air reservoir, multiple groups of pressure sensors 9 are arranged in the sealing layer and the reinforced concrete lining layer 4. The arrangement position of the pressure sensors should ensure that the gas pressure changes in the chamber can be fully detected. Therefore, in this embodiment, adjacent groups of pressure sensors are arranged at a set distance. Preferably, adjacent groups of pressure sensors are arranged at an interval of 50 meters. Each group has multiple pressure sensors, and the multiple pressure sensors are distributed along the contour of the compressed air reservoir, so that all pressure sensors 9 are arranged in an array.

[0050] In this embodiment, the synergy of the flexible support layer and the pressure sensor enables the gas storage to automatically adjust under different pressure conditions. When the internal pressure of the gas storage changes, the pressure sensor monitors in real time and transmits the data to the control system. The control system analyzes the information fed back by the sensor based on the preset pressure range and adjustment strategy, and determines whether it is necessary to balance the internal pressure of each chamber in the gas storage, and whether a pressure relief operation is required if the pressure is too high. During the adjustment process, the flexible support layer will produce elastic deformation according to the changes in the internal pressure of the chamber to cope with the changes in the internal pressure of the chamber, prevent the structure from undergoing plastic deformation, and cause irreversible effects.

[0051] Multiple fiber optic temperature and humidity sensors 8 are arranged on the inner side of the sealing layer and distributed along the contour of the compressed air reservoir. The fiber optic temperature and humidity sensors 8 are connected to the control system and can quickly respond to changes in temperature and humidity and transmit data to the control system to ensure that the temperature and humidity do not exceed the set range.

[0052] The temperature control system includes a plurality of heat exchange tubes 10 arranged on the inner side of the sealing layer. The heat exchange tubes 10 are distributed along the contour of the compressed air reservoir. The heat exchange tubes 10 are used to pass a cooling medium, and the temperature of the compressed air is controlled by the cooling medium. Preferably, the cooling medium adopts a water-ethylene glycol mixed solution with a circulation flow rate of 10L / min-20L / min. The heat exchange tubes are connected to a heat exchange circulation system to realize the circulation flow of the cooling medium. The heat exchange circulation system can adopt the existing technology and will not be described in detail here.

[0053] In order to increase the energy storage density of the air storage chamber and ensure the structural safety of the air storage chamber, the air temperature in the air storage chamber cannot be too high, and the monitoring range is set to 0-80°C; when the temperature exceeds the maximum temperature set by the system (high temperature alarm), the system will start the heat exchange circulation system and start the water-ethylene glycol solution cooling. When the temperature is lower than the minimum temperature set by the system (low temperature alarm), the system will sound an alarm to indicate that freezing may occur, and at the same time start the fuel heating system.

[0054] In this embodiment, excessive relative humidity may cause corrosion, short circuit and other problems of system equipment, especially in the environment where electrical components exist; secondly, excessive humidity will increase the air compression load of the system and reduce the system efficiency; finally, high humidity may also affect the storage and delivery performance of compressed air, so it is necessary to adjust it in time through a dehumidifier. When the relative humidity exceeds 80% (humidity alarm), the system will start the dehumidifier system to reduce the moisture in the cavity. The setting method of the dehumidifier system can adopt the existing technology, which will not be described in detail here.

[0055] Each chamber of the honeycomb structure of the compressed air storage tank is provided with an air outlet pipe, and all the air outlet pipes are gathered into a total air outlet pipe. A safety valve is provided on the air outlet pipe of each chamber to achieve automatic pressure relief. The remaining structure of the compressed air storage tank can adopt the existing technology and will not be described in detail here.

[0056] The construction method of the compressed air storage tank of this embodiment comprises the following steps:

[0057] Step 1: Construct drainage pipes and water-conducting layers on the surrounding rock to ensure that moisture does not enter the cavity.

[0058] Specifically, the drainage pipe is fixed on the surface of the surrounding rock in advance, a formwork is set up, and a gravel layer is filled between the formwork and the surrounding rock to form a water-conducting layer. Then, grouting is performed between the formwork and the surrounding rock to fix the gravel layer and the drainage pipe. After the construction is completed, the formwork is removed.

[0059] The drain pipe located at the bottom of the compressed air storage tank serves as a drain pipe, which is connected to an external water storage tank through a slope-guided drain pipe; a drain valve or an electric drainer is installed in the drain pipe serving as a drain pipe to form a condensate recovery system 11.

[0060] Step 2: After the drainage layer is constructed, a sprayed concrete layer 3 with a thickness of 15cm to 25cm is constructed on the inner side of the drainage layer to enhance the initial stability of the structure.

[0061] Step 3: construct a reinforced concrete lining layer 4 with a thickness of 30 cm to 40 cm on the shotcrete layer 3 to provide strength support, and lay a butyl rubber layer on the inner side of the reinforced concrete lining layer 4.

[0062] Step 4: Lay a sliding layer 5 on the butyl rubber layer with a thickness of 5 cm to 10 cm to prevent the transfer of settlement stress.

[0063] Step 5: Lay a sealing layer on the sliding layer 5, including an outer layer 6 and an inner layer 7, to ensure the sealing effect. The outer layer 6 uses a spray-type polymer coating (such as a modified epoxy resin composite material) to enhance the air tightness of the interface between the bedrock and the gas storage reservoir, with a thickness of 5mm-10mm; the inner layer 7 uses a polymer aerogel film to further improve the barrier performance, with a thickness of 2mm-3mm.

[0064] Step 6: After the sealing layer is constructed, the partition wall 12 is constructed to form a honeycomb structure. The construction method of the partition wall can adopt the existing reinforced concrete wall construction method, which will not be described in detail here.

[0065] After the sealing structure is constructed, compressed air is injected into the cavity and the pressure changes in the cavity are monitored.

[0066] Continuously monitor the pressure, temperature and humidity in the cavity to ensure that all monitoring data meet the standards. The pressure value detected at the i-th detection moment is recorded as Pi, the temperature value detected at the i-th detection moment is recorded as Ti, and the humidity value detected at the i-th detection moment is recorded as RHi. Pi, Ti and RHi are compared with the maximum pressure setting value Ps, the maximum temperature setting value Ts and the maximum humidity setting value RHs respectively. When Pi is less than Ps, Ti is less than Ts, and RHi is less than RHs, continue to inject compressed air into the cavity until it is full and stop injecting; otherwise, stop injecting compressed air. If the pressure, temperature or humidity exceeds the standard, the system will start the regulating device to adjust it.

[0067] If the cavity pressure does not reach the preset standard, it is repaired through leak repair measures and the pressure test is repeated until the cavity meets the design requirements.

[0068] After the cavity is inflated, the system will continue to monitor the pressure, temperature and humidity inside the cavity in real time:

[0069] Pressure monitoring: The pressure sensor will detect the gas pressure in real time and control the gas injection amount according to the set standard to prevent the cavity pressure from being too high or too low.

[0070] Temperature and humidity monitoring: The temperature and humidity sensor monitors the environmental data inside the cavity. When the temperature or humidity exceeds the set range, the system will automatically adjust the environment inside the cavity to ensure safety.

[0071] The compressed air storage structure of our example can effectively reduce fluctuations caused by external temperature changes or internal gas heat. This ensures that the gas storage system can maintain a stable temperature under different working conditions. It improves the overall efficiency of the system, reduces safety hazards caused by temperature fluctuations, and optimizes the working performance of the gas storage.

[0072] The compressed air storage structure of this embodiment can monitor the pressure, temperature, humidity and gas concentration in real time, and combined with the setting of the safety valve, it can respond quickly in abnormal situations. It significantly reduces the potential risks of gas storage operation, ensures the safety of operators and equipment, and improves the reliability of the system. Through real-time data feedback, hidden dangers can be discovered and dealt with in a timely manner to prevent them from happening.

[0073] The compressed air storage structure of this embodiment has the following advantages:

[0074] 1. Improve sealing and durability: This embodiment adopts a double-layer sealing design, with a spray-type polymer coating (such as a modified epoxy resin composite material) on the outer layer and a polymer aerogel film on the inner layer. This double sealing structure greatly improves the airtightness of the cavity and reduces the possibility of gas leakage, thereby improving the airtightness and energy storage efficiency of the gas storage. At the same time, the introduced microcapsule structure can automatically release a repair agent for repair when microcracks appear, which significantly extends the service life of the sealing material and improves the long-term stability of the system.

[0075] 2. Optimize dynamic pressure regulation: Through multi-stage chamber design and dynamic pressure distribution optimization, the system can monitor and adjust the pressure of each chamber in real time to ensure that the pressure in each chamber is evenly distributed, avoid structural stress caused by uneven pressure, and enhance the stability of the gas storage. The flexible support layer and pressure sensor used enable the system to automatically adjust under different pressure conditions. When the internal pressure of the gas storage changes, the pressure sensor monitors in real time and transmits the data to the control system. The control system analyzes the information fed back by the sensor according to the preset pressure range and adjustment strategy, and determines whether it is necessary to balance the internal pressure of each chamber in the gas storage, and whether a pressure relief operation is required if the pressure is too high. During the adjustment process, the flexible support layer will produce elastic deformation according to the changes in the internal pressure of the chamber to cope with the changes in the internal pressure of the chamber, prevent the structure from undergoing plastic deformation, and cause irreversible effects, effectively cope with pressure fluctuations during the gas storage process, and thus improve the overall operational safety.

[0076] 3. Improve the safety of gas storage operation: This embodiment integrates an intelligent monitoring system to monitor key parameters such as pressure, temperature, humidity, and gas concentration in the gas storage in real time. When an abnormal situation is detected, the system will initiate corresponding emergency measures, such as safety valves and cooling systems, to ensure the safe operation of the gas storage. In addition, when the leakage emergency system detects overpressure or gas leakage, it can quickly initiate pressure reduction or isolation measures to effectively prevent accidents.

[0077] 4. Optimize temperature and humidity control and energy utilization: Through the integrated temperature control system, the temperature in the gas storage can be accurately adjusted to avoid changes in gas pressure caused by temperature fluctuations, thereby ensuring the stability of the gas storage process. The temperature and humidity sensors monitor in real time. When water accumulation or excessive humidity is detected, the dehumidifier is automatically started and the condensate recovery system is triggered. The condensate recovery system can collect and utilize the condensate in the gas storage process, improving the energy efficiency of the system.

[0078] 5. Strong environmental adaptability and intelligent monitoring: The multi-field coupling real-time monitoring system designed in this embodiment can not only effectively monitor the temperature, humidity, pressure, gas volume and other parameters in the cavity, but also deal with possible problems such as excessive humidity and low pressure. Through intelligent feedback, the system can automatically adjust the operating parameters to ensure the stable operation of the gas storage, reduce manual intervention, and improve the automation and intelligence level of the system.

[0079] 6. Enhance the economy and environmental protection of the system: This embodiment effectively improves the economy of the system by reducing gas leakage, reducing energy loss, and extending the service life of the sealing layer. At the same time, the use of environmentally friendly polymer aerogel materials and self-repairing coatings reduces environmental pollution caused by material aging or damage, which is in line with the development trend of modern green energy technology.

[0080] 7. Improved reliability: The overall design structure of this embodiment is simple and reasonable, and the functions of various systems are optimized, so that the compressed air energy storage system can operate more stably and efficiently when facing different operating conditions. Real-time data monitoring and feedback ensure that any potential problems can be identified and handled in the shortest time, greatly improving the reliability of the system.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compressed air storage structure, characterized in that: From the outside to the inside, it includes a drainage layer, a shotcrete layer, a reinforced concrete lining layer, a sliding layer and a sealing layer arranged in sequence. A space for storing compressed air is formed inside the sealing layer. A partition wall is provided inside the sealing layer to divide the space inside the sealing layer into multiple chambers. A balancing pipe is pre-buried in the partition wall to connect adjacent chambers to each other. An electric control valve is provided on the balancing pipe to control the conduction and disconnection of the balancing pipe. An air pressure detection element is provided in each chamber.

2. A compressed air storage structure according to claim 1, characterized in that: The sliding layer is an asphalt sliding layer; Furthermore, the thickness of the sliding layer is 5cm-10cm.

3. A compressed air storage structure according to claim 1, characterized in that: The sealing layer comprises an outer layer and an inner layer, the outer layer is a polymer coating, the interior of which contains polyurea-formaldehyde microcapsules, the polyurea-formaldehyde microcapsules encapsulate epoxy resin repairing agents, and the inner layer is a polymer aerogel film; Furthermore, the thickness of the outer layer is 5mm-10mm, and the thickness of the inner layer is 2mm-3mm.

4. A compressed air storage structure according to claim 1, characterized in that: A flexible support layer is provided between the reinforced concrete lining layer and the sliding layer; Furthermore, the flexible supporting layer is a butyl rubber layer.

5. A compressed air storage structure according to claim 1, characterized in that: The thickness of the reinforced concrete lining layer is 30cm-40cm.

6. A compressed air storage structure according to claim 1, characterized in that: The thickness of the sprayed concrete layer is 15cm-25cm.

7. A compressed air storage structure according to claim 1, characterized in that: Pressure detection elements are arranged in the sealing layer and the reinforced concrete lining layer. Along the length direction of the compressed air storage structure, the pressure detection elements are arranged in multiple groups, each group is arranged at a set distance and has multiple pressure detection elements distributed along the contour line of the compressed air storage.

8. A compressed air storage structure according to claim 1, characterized in that: A plurality of optical fiber temperature and humidity sensors are arranged on the inner side of the sealing layer along the contour line of the compressed air storage structure.

9. A compressed air storage structure according to claim 1, characterized in that: A plurality of heat exchange tubes are arranged on the inner side surface of the sealing layer along the contour line of the compressed air reservoir, and the heat exchange tubes are connected to a heat exchange circulation system.

10. A compressed air storage structure according to claim 1, characterized in that: The partition wall is a reinforced concrete wall.

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