Efficient compressed air heat and energy storage system based on ultra-deep salt cavern air storage

Abstract

The invention discloses an efficient compressed air heat and energy storage system based on ultra-deep salt cavern air storage, and belongs to the technical field of compressed air heat and energy storage. Comprising a compressor, an expansion unit, a heat exchange module, an ultra-deep salt cavern air storage tank and a heat storage device, wherein the compressor is used for compressing air into high-pressure air; the expansion unit is used for expanding the high-pressure air to generate power; the heat exchange module is used for recovering and releasing heat in the air compression and expansion process; according to the ultra-deep salt cavern compressed air energy storage system, the ultra-deep salt cavern serves as an air storage device, and large-scale and low-cost compressed air energy storage is achieved; and through the application of an efficient adiabatic compression technology and a high-temperature heat storage material, the charging and discharging efficiency of the system is improved, and the energy loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air heat storage and energy storage, and in particular to a high-efficiency compressed air heat storage and energy storage system based on ultra-deep salt cavern gas storage. Background Art

[0002] At present, in the field of compressed air energy storage, common technical means include traditional underground cave gas storage, underwater gas storage and ground gas storage tanks. Traditional underground cave gas storage mainly uses natural caves or artificially excavated caves to store compressed air. Although this method has low cost, it has limited application scope due to geological conditions. Underwater gas storage uses underwater containers or air bags to store compressed air. Although it has certain flexibility, it has high construction costs and complex maintenance. Ground gas storage tanks usually use large metal tanks. Although the construction is relatively simple, they occupy a large area when used on a large scale, and the construction and operation costs are high. In addition, these methods are often accompanied by a large amount of heat loss during the compression and expansion process, resulting in low overall efficiency of the system.

[0003] Existing compressed air energy storage systems have many problems in practical applications, especially in terms of heat management and gas storage methods. The large amount of heat generated by traditional compressed air energy storage systems during the compression process cannot be effectively utilized, resulting in serious energy loss. At the same time, commonly used gas storage methods such as underground cave gas storage and ground gas storage tanks are difficult to achieve large-scale, low-cost gas storage needs due to geological conditions and space limitations. At the same time, even if the current compressed air energy storage system is stored underground, the pipeline still has the problem of temperature rise when passing through the rock and soil part close to the surface. In view of this, this application is proposed. Summary of the invention

[0004] To this end, the present invention provides a high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: a highly efficient compressed air heat storage and energy storage system based on ultra-deep salt cavern gas storage, comprising a compressor for compressing air into high-pressure air, an expansion unit for expanding the high-pressure air to generate power, a heat exchange module for recovering and releasing heat during the compression and expansion of the air, an ultra-deep salt cavern gas storage tank for storing high-pressure air, a heat storage device for storing and releasing heat, a gas pipeline for transporting compressed high-pressure air and released low-pressure air, and a control system for monitoring and adjusting the operating state of the entire system, wherein a safety valve is provided on the gas pipeline to prevent excessive pressure in the pipeline; The air inlet of the expander is connected to the ultra-deep salt cavern gas storage tank, and the air outlet of the expander is connected to the heat exchange module for recovering the heat generated during the expansion process. The inlet and outlet of the heat exchange module are connected to the gas pipeline for transporting compressed high-pressure air and released low-pressure air. After being compressed by the compressor, the air passes through the heat exchange module to absorb heat and enters the ultra-deep salt cavern gas storage tank. The inlet and outlet of the heat storage device are connected to the heat exchange module.

[0006] The gas transmission pipeline is also provided with a heat conduction control module, which can automatically adjust the heat conduction capacity according to the temperature of the underground rock and soil.

[0007] As a preferred solution of the present invention, the compressor includes multiple compression units, which are either screw compressors or centrifugal compressors. The compression units are connected by pipelines to form a multi-stage compression system to gradually increase the pressure of the air. The screw compressor has a higher compression ratio and better efficiency and is suitable for high-pressure conditions. The centrifugal compressor has a higher flow rate and lower noise and is suitable for large flow conditions. The air outlet of the compressor is connected to a heat exchange module to lower the temperature of the compressed air and reduce energy consumption in the subsequent compression process.

[0008] As a preferred solution of the present invention, a filter is provided at the air inlet of the compressor to remove impurities in the air and ensure the quality of the compressed air.

[0009] As a preferred solution of the present invention, the heat exchange module is composed of several heat exchange units connected in series, each heat exchange unit is provided with a cooling water circulation loop, and the heat exchange unit is any one of a shell and tube heat exchanger or a plate heat exchanger. The shell and tube heat exchanger has a large heat exchange area and good corrosion resistance, and is suitable for high temperature and high pressure conditions. The plate heat exchanger has a high heat exchange efficiency and a small volume, and is suitable for compact design. It recovers and releases heat during air compression and expansion to reduce energy loss. The heat exchange unit and the compression unit of the compressor are arranged alternately, so that the air can be cooled by the heat exchange unit after each stage of compression, which is used to reduce the temperature of the compressed air to reduce energy consumption in the subsequent compression process.

[0010] As a preferred solution of the present invention, the expander includes multiple expansion units, and the expansion units are any one of a turbine expander or a piston expander. The expansion units are connected by pipelines to form a multi-stage expansion system to gradually reduce the pressure of the high-pressure air to generate power. The turbine expander has a higher power density and better efficiency and is suitable for high-speed conditions. The piston expander has higher reliability and a longer service life and is suitable for low-speed conditions. The expansion units are connected by pipelines to form a multi-stage expansion system to gradually reduce the pressure of the high-pressure air to generate power.

[0011] As a preferred solution of the present invention, a temperature sensor and a pressure sensor are provided inside the ultra-deep salt cavern gas storage tank for real-time monitoring of the temperature and pressure inside the gas storage tank. The temperature sensor is any one of a thermal resistor or a thermocouple, and has high measurement accuracy and stability. The pressure sensor is any one of a piezoresistive or piezoelectric type, and has a fast response speed and high sensitivity. The temperature sensor and the pressure sensor are connected to the control system for real-time display of the temperature and pressure data inside the gas storage tank, so as to timely adjust the operating parameters of the system.

[0012] As a preferred solution of the present invention, the heat storage device is composed of a solid heat storage material and a liquid heat storage medium. The solid heat storage material is arranged inside the heat storage device, and the liquid heat storage medium circulates by pumping.

[0013] As a preferred solution of the present invention, the heat storage material of the heat storage device is composed of a solid heat storage material and a liquid heat storage medium. The solid heat storage material is arranged inside the heat storage device, and the liquid heat storage medium circulates by pumping. The solid heat storage material is any one of ceramic fiber or phase change material, and has high heat capacity and good thermal stability. The liquid heat storage medium is any one of heat transfer oil or water, and has high thermal conductivity and good fluidity.

[0014] As a preferred solution of the present invention, the control system is any one of a PLC controller or a DCS system, which has a high degree of automation and reliability, and automatically adjusts the operating parameters of equipment such as compressors, expanders, and heat exchange modules according to real-time monitoring data to ensure stable operation of the system. It can also exchange data with a host computer through a remote communication interface to achieve remote monitoring and management.

[0015] As a preferred solution of the present invention, the heat transfer control module is composed of a hollow tube wrapped on the outer wall of the gas transmission pipeline and a heat transfer liquid storage tank arranged on the ground surface. The heat transfer liquid storage tank is connected with the inner cavity of the hollow tube through a circulation pump. The inner cavity of the hollow tube is filled with heat transfer liquid. The outer wall of the hollow tube is provided with temperature sensors for detecting the rock and soil temperature at equal intervals along the longitudinal direction. The inner wall of the hollow tube is provided with level sensors for detecting the liquid level of the heat transfer liquid at equal intervals along the longitudinal direction. In actual use, the temperature sensors on each node first detect the rock and soil temperature at different heights. In hot weather, the rock and soil temperature close to the ground surface is detected. The temperature may be high. At this time, the heat transfer fluid in the hollow tube is pumped out through the circulation pump, so that the hollow tube of the rock and soil part with higher temperature is hollow, and there is no heat transfer fluid in the middle as the heat transfer medium, while the hollow tubes of other rock and soil parts with lower temperature are still distributed with heat transfer fluid, so that the compressed air remains at a low temperature when entering the ultra-deep salt cavern gas storage tank through the gas pipeline. The rock and soil temperature at each height is continuously detected by the temperature sensor, and a threshold is set. When the temperature exceeds the threshold, the circulation pump is controlled to lower the liquid level of the heat transfer fluid to below the temperature sensor under the temperature threshold, until it reaches a temperature sensor height position where the value does not exceed the threshold.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention realizes large-scale, low-cost compressed air energy storage by utilizing ultra-deep salt caverns as gas storage devices, and improves the charging and discharging efficiency of the system and reduces energy loss through the application of efficient adiabatic compression technology and high-temperature heat storage materials.

[0017] 2. The present invention monitors and adjusts the operating parameters of the system in real time through the control system, thereby ensuring the stability and safety of the system, and realizing efficient energy conversion and storage in the energy storage and regulation of large-scale renewable energy power generation systems, which is particularly suitable for the smooth output of unstable energy such as wind energy and solar energy.

[0018] 3. The present invention connects an external heat conduction control module to the gas pipeline, which can automatically adjust the heat conduction capacity of the gas pipeline according to the underground rock and soil temperature during actual use. It can reduce the heat exchange efficiency between the air inside the gas pipeline and the external rock and soil when the rock and soil temperature is high, and keep the air in the pipeline at a low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a system module diagram of the present invention; Figure 2 It is a layout diagram of the compression unit and the heat exchange module in the present invention.

[0021] Legend: 1. Compressor; 2. Heat exchange module; 3. Expander; 4. Gas pipeline; 5. Ultra-deep salt cavern gas storage tank; 6. Heat storage device; 7. Control system; 8. Filter; 9. Safety valve; 10. Temperature sensor; 11. Circulation pump; 12. Thermal fluid storage tank; 13. Liquid level sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Specific examples are given below.

[0024] like Figure 1-Figure 2 As shown, a high-efficiency compressed air heat storage and energy storage system based on ultra-deep salt cavern gas storage includes a compressor 1 for compressing air into high-pressure air, an expansion unit for expanding the high-pressure air to generate power, a heat exchange module 2 for recovering and releasing heat during the compression and expansion of the air, an ultra-deep salt cavern gas storage tank 5 for storing high-pressure air, a heat storage device 6 for storing and releasing heat, a gas pipeline 4 for transporting compressed high-pressure air and released low-pressure air, and a control system 7 for monitoring and adjusting the operating status of the entire system. A safety valve 9 is provided on the gas pipeline 4 to prevent excessive pressure in the pipeline. The safety valve 9 has an automatic pressure relief function. When the pressure in the pipeline exceeds the preset value, it automatically opens to relieve pressure to ensure the safety of the system. By using ultra-deep salt caverns as gas storage devices, large-scale, low-cost compressed air energy storage is achieved. Through the application of efficient adiabatic compression technology and high-temperature heat storage materials, the charging and discharging efficiency of the system is improved, and energy loss is reduced. The control system 7 monitors and adjusts the operating parameters of the system in real time to ensure the stability and safety of the system. In the energy storage and regulation of large-scale renewable energy power generation systems, efficient energy conversion and storage are achieved, which is particularly suitable for the smooth output of unstable energy such as wind energy and solar energy. The air inlet of the expander 3 is connected to the ultra-deep salt cavern gas storage tank 5, and the air outlet of the expander 3 is connected to the heat exchange module 2 for recovering the heat generated during the expansion process. The inlet and outlet of the heat exchange module 2 are connected to the gas pipeline 4 for transporting compressed high-pressure air and released low-pressure air. After being compressed by the compressor 1, the air passes through the heat exchange module 2 for absorbing heat and enters the ultra-deep salt cavern gas storage tank 5. The inlet and outlet of the heat storage device 6 are connected to the heat exchange module 2. A heat conduction control module is also provided on the gas pipeline 4, which can automatically adjust the thermal conductivity according to the underground rock and soil temperature.

[0025] The compressor 1 includes a plurality of compression units, which are either a screw compressor 1 or a centrifugal compressor 1. The compression units are connected by pipelines to form a multi-stage compression system to gradually increase the pressure of the air. The screw compressor 1 has a higher compression ratio and better efficiency, and is suitable for high-pressure conditions. The centrifugal compressor 1 has a higher flow rate and lower noise, and is suitable for large-flow conditions. The air outlet of the compressor 1 is connected to the heat exchange module 2, which is used to reduce the temperature of the compressed air and reduce the energy consumption in the subsequent compression process.

[0026] A filter 8 is provided at the air inlet of the compressor 1 to remove impurities in the air and ensure the quality of the compressed air.

[0027] The heat exchange module 2 is composed of several heat exchange units connected in series, each of which is provided with a cooling water circulation loop. The heat exchange unit is any one of a shell and tube heat exchanger or a plate heat exchanger. The shell and tube heat exchanger has a large heat exchange area and good corrosion resistance, and is suitable for high temperature and high pressure conditions. The plate heat exchanger has a high heat exchange efficiency and a small volume, and is suitable for compact design. It recovers and releases heat during air compression and expansion to reduce energy loss. The heat exchange unit and the compression unit of the compressor 1 are arranged alternately, so that the air can be cooled by the heat exchange unit after each stage of compression, which is used to reduce the temperature of the compressed air to reduce energy consumption in the subsequent compression process.

[0028] The expander 3 includes multiple expansion units, and the expansion unit is any one of a turbine expander or a piston expander. The turbine expander has a higher power density and better efficiency and is suitable for high-speed conditions. The piston expander has higher reliability and a longer service life and is suitable for low-speed conditions. The expansion units are connected by pipelines to form a multi-stage expansion system to gradually reduce the pressure of the high-pressure air to generate power.

[0029] A temperature sensor and a pressure sensor are provided inside the ultra-deep salt cavern gas storage tank 5 for real-time monitoring of the temperature and pressure inside the gas storage tank. The temperature sensor is either a thermal resistor or a thermocouple, and has high measurement accuracy and stability. The pressure sensor is either a piezoresistive or piezoelectric type, and has a fast response speed and high sensitivity. The temperature sensor and the pressure sensor are connected to the control system 7 for real-time display of the temperature and pressure data inside the gas storage tank, so as to adjust the operating parameters of the system in time.

[0030] The heat storage device 6 is composed of a solid heat storage material and a liquid heat storage medium. The solid heat storage material is arranged inside the heat storage device 6, and the liquid heat storage medium circulates by pumping.

[0031] The heat storage material of the heat storage device 6 is composed of a solid heat storage material and a liquid heat storage medium. The solid heat storage material is arranged inside the heat storage device 6, and the liquid heat storage medium circulates by pumping. The solid heat storage material is any one of ceramic fiber or phase change material, and has high heat capacity and good thermal stability. The liquid heat storage medium is any one of heat transfer oil or water, and has high thermal conductivity and good fluidity.

[0032] The control system 7 is any one of a PLC controller or a DCS system, which has a high degree of automation and reliability. It automatically adjusts the operating parameters of the compressor 1, the expander 3, the heat exchange module 2 and other equipment according to the real-time monitoring data to ensure the stable operation of the system, and can exchange data with the host computer through the remote communication interface to achieve remote monitoring and management.

[0033] The thermal control module is composed of a hollow tube wrapped on the outer wall of the gas pipeline 4 and a thermal liquid storage tank 12 arranged on the ground. The thermal liquid storage tank 12 is connected to the inner cavity of the hollow tube through a circulation pump 11. The inner cavity of the hollow tube is filled with thermal liquid. The outer wall of the hollow tube is equidistantly provided with temperature sensors 10 for detecting the rock and soil temperature along the longitudinal direction. The inner wall of the hollow tube is equidistantly provided with liquid level sensors 13 for detecting the liquid level of the thermal liquid along the longitudinal direction. In actual use, the temperature sensors 10 on each node first detect the rock and soil temperature at different heights. In hot weather, the rock and soil temperature close to the surface may be higher. At this time, the circulating pump 11 is used to detect the rock and soil temperature. The pump 11 extracts the heat transfer fluid in the hollow tube, so that the hollow tube of the rock and soil part with higher temperature is hollow, without heat transfer fluid as heat transfer medium in the middle, while the hollow tube of other rock and soil parts with lower temperature is still distributed with heat transfer fluid, so that the compressed air keeps low temperature when entering the ultra-deep salt cavern gas storage tank 5 through the gas pipeline 4. The rock and soil temperature at each height is continuously detected by the temperature sensor 10, and a threshold is set. When the temperature exceeds the threshold, the circulating pump 11 is controlled to lower the liquid level of the heat transfer fluid to below the temperature sensor 10 under the temperature threshold, until it reaches a height position of the temperature sensor 10 whose value does not exceed the threshold.

[0034] Working principle: When this system is used, it specifically includes the following processes: 1. Compression process: The outside air is sucked in through the compressor 1. The compressor 1 has a multi-stage compression function and can gradually increase the pressure of the air. At the same time, after each stage of compression, the compressed air is cooled by the heat exchange units arranged in between phases to reduce the energy consumption in the subsequent compression process. Finally, the high-pressure air is transported to the ultra-deep salt cavern gas storage tank 5 for storage.

[0035] 2. Heat storage process: During the compression process, the heat generated by the compressed air is transferred to the liquid heat storage medium through the heat exchange module 2. The liquid heat storage medium circulates by pumping and transfers the heat to the solid heat storage material, thereby realizing heat storage.

[0036] 3. Expansion process: When energy needs to be released, high-pressure air is released from the ultra-deep salt cavern gas storage tank 5 and transported to the expander 3 through the gas pipeline 4. The high-pressure air expands in the expander 3 to generate power. The heat generated during the expansion process is transferred to the liquid heat storage medium through the heat exchange module 2. The liquid heat storage medium then transfers the heat to the solid heat storage material, thereby realizing heat recovery.

[0037] 4. Control process: The control system 7 monitors key parameters such as temperature, pressure, flow rate, etc. in real time, and automatically adjusts the operating parameters of the compressor 1, expander 3, heat exchange module 2 and other equipment to ensure the stable operation of the system. The control system 7 can also exchange data with the host computer through the remote communication interface to achieve remote monitoring and management.

[0038] 5. Automatic adjustment process of the gas pipeline 4: The temperature sensor 10 detects the rock and soil temperatures at different heights. The temperature sensor 10 continuously detects the rock and soil temperatures at each height and sets a threshold. When the temperature exceeds the threshold, the circulating pump 11 is controlled to lower the liquid level of the thermal fluid to below the temperature sensor 10 at the temperature threshold, until the temperature sensor 10 reaches a height position where the value does not exceed the threshold.

[0039] Through the above design, the system can achieve efficient energy conversion and storage in the energy storage and regulation of large-scale renewable energy power generation systems, and is particularly suitable for the smooth output of unstable energy such as wind energy and solar energy. By using ultra-deep salt caverns as gas storage devices, large-scale, low-cost compressed air energy storage is achieved, and through the application of efficient adiabatic compression technology and high-temperature thermal storage materials, the charging and discharging efficiency of the system is improved and energy loss is reduced. At the same time, the operating parameters of the system are monitored and adjusted in real time through the control system 7 to ensure the stability and safety of the system.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A highly efficient compressed air thermal energy storage system based on ultra-deep salt cavern gas storage, characterized in that: The system comprises a compressor (1) for compressing air into high-pressure air, an expansion unit for expanding the high-pressure air to generate power, a heat exchange module (2) for recovering and releasing heat during the compression and expansion of the air, an ultra-deep salt cavern gas storage tank (5) for storing the high-pressure air, a heat storage device (6) for storing and releasing heat, a gas transmission pipeline (4) for transporting the compressed high-pressure air and the released low-pressure air, and a control system (7) for monitoring and adjusting the operating state of the entire system, wherein the gas transmission pipeline (4) is provided with a safety valve (9); The air inlet of the expander (3) is connected to the ultra-deep salt cavern gas storage tank (5), and the air outlet of the expander (3) is connected to the heat exchange module (2) for recovering the heat generated during the expansion process. The inlet and outlet of the heat exchange module (2) are connected to the gas pipeline (4) for transporting compressed high-pressure air and released low-pressure air. After being compressed by the compressor (1), the air passes through the heat exchange module (2) for absorbing heat and enters the ultra-deep salt cavern gas storage tank (5). The inlet and outlet of the heat storage device (6) are connected to the heat exchange module (2); The gas transmission pipeline (4) is also provided with a heat conduction control module, which can automatically adjust the heat conduction capacity according to the temperature of the underground rock and soil.

2. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The compressor (1) comprises a plurality of compression units, wherein the compression units are any one of a screw compressor (1) or a centrifugal compressor (1), and the compression units are connected via pipelines to form a multi-stage compression system to gradually increase the pressure of the air.

3. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 2 is characterized in that: A filter (8) is provided at the air inlet of the compressor (1) to remove impurities in the air.

4. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 3 is characterized in that: The heat exchange module (2) is composed of a plurality of heat exchange units connected in series, each heat exchange unit is provided with a cooling water circulation loop, and the heat exchange unit is any one of a shell and tube heat exchanger or a plate heat exchanger, which recovers and releases heat during the air compression and expansion process to reduce energy loss. The heat exchange unit and the compression unit of the compressor (1) are arranged alternately, so that the air can be cooled by the heat exchange unit after each stage of compression, which is used to reduce the temperature of the compressed air and reduce the energy consumption in the subsequent compression process.

5. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The expander (3) comprises a plurality of expansion units, wherein the expansion units are any one of a turbine expander or a piston expander, and the expansion units are connected by pipelines to form a multi-stage expansion system to gradually reduce the pressure of the high-pressure air to generate power.

6. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The ultra-deep salt cavern gas storage tank (5) is provided with a temperature sensor and a pressure sensor for real-time monitoring of the temperature and pressure in the gas storage tank. The temperature sensor is any one of a thermal resistor and a thermocouple, and the pressure sensor is any one of a piezoresistive type and a piezoelectric type. The temperature sensor and the pressure sensor are connected to the control system (7) for real-time display of the temperature and pressure data in the gas storage tank.

7. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The heat storage device (6) is composed of a solid heat storage material and a liquid heat storage medium; the solid heat storage material is arranged inside the heat storage device (6); and the liquid heat storage medium circulates by means of pumping.

8. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The heat storage material of the heat storage device (6) is composed of a solid heat storage material and a liquid heat storage medium; the solid heat storage material is arranged inside the heat storage device (6); the liquid heat storage medium circulates by pumping; the solid heat storage material is any one of ceramic fiber and phase change material; and the liquid heat storage medium is any one of heat transfer oil and water.

9. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The control system (7) is any one of a PLC controller and a DCS system, which automatically adjusts the operating parameters of the compressor (1), the expander (3), the heat exchange module (2) and other equipment according to real-time monitoring data, and can exchange data with a host computer through a remote communication interface to achieve remote monitoring and management.

10. The high-efficiency compressed air thermal energy storage system based on ultra-deep salt cavern gas storage according to claim 1 is characterized in that: The heat transfer control module is composed of a hollow tube wrapped around the outer wall of a gas transmission pipeline (4) and a heat transfer liquid storage tank (12) arranged on the ground surface; the heat transfer liquid storage tank (12) is connected to the inner cavity of the hollow tube via a circulation pump (11); the inner cavity of the hollow tube is filled with heat transfer liquid; and temperature sensors (10) for detecting rock and soil temperature are equidistantly arranged on the outer wall of the hollow tube along the longitudinal direction; and level sensors (13) for detecting the liquid level of the heat transfer liquid are equidistantly arranged on the inner wall of the hollow tube along the longitudinal direction.

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