Compressed air energy storage chamber temperature control system and control method

Abstract

The invention discloses a compressed air energy storage chamber temperature control system and a control method, the temperature control system is applied to a chamber, and the temperature control system comprises a first water source group used for providing cooling water; the second water source group is used for providing heating water; the water pump assembly comprises a first cylinder body and a second cylinder body which are independent from each other, pistons are arranged in the first cylinder body and the second cylinder body respectively, and the two pistons are driven by the same power source to move in opposite directions; one end of the first water supply pipeline communicates with the first water source set and the second water source set, and the other end of the first water supply pipeline communicates with a left cavity of the first cylinder body and a left cavity of the second cylinder body. And cooling water of the first water source group / heating water of the second water source group is conveyed to the left chamber of the first cylinder body and / or the left chamber of the second cylinder body.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage engineering, and particularly relates to a temperature control system and regulation method for a compressed air energy storage chamber. Background Art

[0002] With the development of compressed air energy storage technology, in order to get rid of the limitation of relying on salt cavern resources, using artificial chambers as gas storage reservoirs for compressed air energy storage systems has attracted more and more attention in the industry. The temperature control technology of artificial chamber gas storage reservoirs is crucial, affecting the safety, efficiency and economy of compressed air energy storage systems.

[0003] Currently, the existing temperature control systems for artificial chamber gas storage reservoirs have many defects. On the one hand, the traditional systems have deficiencies in energy recovery and utilization, failing to make full use of the energy generated during the operation of the system, resulting in energy waste and poor overall economy of the system. On the other hand, the existing temperature control systems for artificial chamber gas storage reservoirs only involve the effect of suppressing temperature rise during the gas charging and energy storage stage of the gas storage reservoir, and do not mention the role of suppressing temperature drop during the gas discharging and energy releasing stage of the gas storage reservoir.

[0004] In summary, developing an efficient temperature control system for artificial chamber gas storage reservoirs that can overcome the above defects is of crucial practical significance for promoting the development of compressed air energy storage technology and enhancing its competitiveness in the energy field. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a temperature control system for a compressed air energy storage chamber, which is applied to a chamber and includes: A first water source group for providing cooling water; A second water source group for providing heating water; A water pump assembly including an independent first cylinder and a second cylinder, wherein pistons are respectively arranged in the first cylinder and the second cylinder, and the two pistons move in opposite directions under the drive of the same power source; A first water supply pipeline, one end of which is respectively communicated with the first water source group and the second water source group, and the other end of which is respectively communicated with the left chambers of the first cylinder and the second cylinder, for conveying the cooling water of the first water source group / the heating water of the second water source group to the left chamber of the first cylinder or the left chamber of the second cylinder when cooling / heating the chamber; A second water supply pipeline, one end of which is respectively communicated with the left chambers of the first cylinder and the second cylinder, and the other end of which is communicated with the chamber, for conveying the cooling water / the heating water to the chamber to cool / heat the chamber; The first return water pipeline, one end of which is communicated with the chamber, and the other end of which is respectively communicated with the right chamber of the first cylinder body and the right chamber of the second cylinder body, is used to recycle the water cooled / heated in the chamber to the right chamber of the first cylinder body and / or the right chamber of the second cylinder body; The second return water pipeline, one end of which is respectively communicated with the right chamber of the first cylinder body and the right chamber of the second cylinder body, and the other end of which is respectively communicated with the first water source group and the second water source group, is used to respectively transport the recycled water in the right chamber of the first cylinder body and the right chamber of the second cylinder body to the corresponding water source groups.

[0006] As an optional embodiment, an atomizing nozzle and a recovery water pool are arranged in the chamber. The atomizing nozzle is communicated with the second water supply pipeline, and the recovery water pool is communicated with the first return water pipeline.

[0007] As an optional embodiment, the first water source group includes a ground water pool, and the second water source group includes a warm water tank and a cold water tank. The temperature of the cooling water in the ground water pool is lower than the temperature of the heated water in the warm water tank.

[0008] As an optional embodiment, the first water supply pipeline includes a first branch and a second branch. The water inlet end of the first branch is respectively communicated with the ground water pool and the warm water tank through valves. The water outlet end of the first branch is communicated with the water inlet end of the second branch. The water outlet end of the second branch is respectively communicated with the left chamber of the first cylinder body and the left chamber of the second cylinder body through valves.

[0009] As an optional embodiment, the second water supply pipeline includes a third branch and a fourth branch. The two ends of the third branch are respectively communicated with the left chamber of the first cavity and the atomizing nozzle. The two ends of the fourth branch are respectively communicated with the left chamber of the second cavity and the atomizing nozzle.

[0010] As an optional embodiment, the water inlet end of the first return water pipeline is communicated with the recovery water pool, and its water outlet end is respectively communicated with the right chamber of the first cylinder body and the right chamber of the second cylinder body through valves.

[0011] As an optional embodiment, the water inlet ends of the second return water pipeline are respectively communicated with the right chamber of the first cylinder body and the right chamber of the second cylinder body through valves, and its water outlet ends are respectively communicated with the ground water pool and the cold water tank through valves.

[0012] As an optional embodiment, the temperature control system for the compressed air energy storage chamber further includes a temperature measuring component and a control component arranged in the chamber. The temperature measuring component is used to monitor the temperature of the chamber and send it to the control component so that the control component adjusts the power of the water pump component.

[0013] An object of an embodiment of the present application is to provide a control method, which adopts the temperature control system for the compressed air energy storage chamber as described above. The control method includes: Obtain the working state of the compressed air energy storage system; Based on the working state, control the on-off of the first water supply pipeline with the first water source group and the second water source group to cool or heat the chamber; When it is determined to cool or heat the chamber, obtain the real-time temperature of the chamber; Compare the real-time temperature with the target temperature, where the target temperature is the temperature that the chamber needs to maintain, and the target temperature that the chamber needs to maintain is different in different working states; Based on the comparison result, control the power of the water pump assembly, where the power of the water pump assembly is used to control the moving speed of the piston to determine the flow rate of the first water source group or the second water source group injected into the chamber.

[0014] An object of an embodiment of the present application is to provide a control device, which adopts the temperature control system for the compressed air energy storage chamber as described above. The control device includes: A first acquisition module configured to obtain the working state of the compressed air energy storage system; A first control module configured to control the on-off of the first water supply pipeline with the first water source group and the second water source group based on the working state to cool or heat the chamber; A second acquisition module configured to obtain the real-time temperature of the chamber when it is determined to cool or heat the chamber; A comparison module configured to compare the real-time temperature with the target temperature, where the target temperature is the temperature that the chamber needs to maintain, and the target temperature that the chamber needs to maintain is different in different working states; A second control module configured to control the power of the water pump assembly based on the comparison result, where the power of the water pump assembly is used to control the moving speed of the piston to determine the flow rate of the first water source group or the second water source group injected into the chamber.

[0015] The beneficial effect of the embodiment of the present application is as follows: By providing an independent first water source group and a second water source group, connecting the water source group with the left chambers of the first and second cylinders through the first water supply pipeline, and connecting the left chambers of the cylinders with the chamber through the second water supply pipeline, a complete cold and hot water circulation path is constructed to achieve efficient and uniform cooling of the air in the chamber during the charging stage, and similarly achieve efficient and uniform heating during the deflation stage, avoiding local temperature anomalies.

[0016] The water pump assembly of the present invention adopts a double-acting two-cylinder reciprocating pump. The pistons in two independent cylinders move in opposite directions under the drive of the same power source, which can cleverly utilize the reciprocating motion of the pistons, effectively saving the power consumption generated by the water spray flow and providing guarantee for the efficient operation of the system.

[0017] The present invention can effectively utilize the surplus heat of the compressed air energy storage system cycle, improve the cycle efficiency of the compressed air energy storage system, control the temperature and pressure fluctuation ranges in the chamber, thereby ensuring the structural safety of the surrounding rock of the chamber and improving the service life of the sealing materials in the chamber. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the temperature control system of the compressed air energy storage chamber according to an embodiment of the present application; Figure 2 It is a flow chart of the regulation method according to an embodiment of the present application.

[0019] Among them, 1. Chamber; 2. Atomizing nozzle; 3. Water pump assembly; 4. Warm water tank; 5. Cold water tank; 6. Ground pool; 7 - 18. Valves; 19. First return water pipeline; 20. Temperature measuring element. Detailed Embodiments

[0020] Reference is made herein to the various solutions and features of the present application with reference to the drawings.

[0021] It should be understood that various modifications can be made to the embodiments applied herein. Therefore, the above description should not be regarded as restrictive, but only as an example of the embodiments. Those skilled in the art will think of other modifications within the scope and spirit of the present application.

[0022] The drawings included in and forming a part of the specification illustrate the embodiments of the present application, and together with the general description of the present application given above and the detailed description of the embodiments given below are used to explain the principles of the present application.

[0023] These and other features of the present application will become apparent from the following description of the preferred forms of the embodiments given by way of non-limiting example with reference to the drawings.

[0024] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present application.

[0025] When combined with the drawings, in view of the following detailed description, the above and other aspects, features and advantages of the present application will become more apparent.

[0026] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present application, which can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely used as a basis and representative basis for the claims to teach those skilled in the art to use the present application in substantially any suitable detailed structure in a variety of ways.

[0027] This specification may use the phrase "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", which may each refer to one or more of the same or different embodiments according to the present application.

[0028] A temperature control system for a compressed air energy storage chamber according to an embodiment of the present application, as Figure 1 shown, is applied to the chamber 1 and includes a first water source group, a second water source group, a water pump assembly 3, a first water supply pipeline, a second water supply pipeline, a first water return pipeline 19 and a second water return pipeline.

[0029] The first water source group is used to provide cooling water, and the second water source group is used to provide heating water. Among them, the first water source group provides a source of cooling water for reducing the temperature of the chamber 1, such as a natural cooling pool near the factory, which can continuously supply low-temperature water to the system. The second water source group supplies a source of heating water for raising the temperature of the chamber 1, such as a water tank heated by electric heating or using the waste heat of the system, which can provide hot water meeting the heating requirements.

[0030] The water pump assembly 3 includes an independent first cylinder and a second cylinder. Pistons are respectively arranged in the first cylinder and the second cylinder, and the two pistons move in opposite directions under the drive of the same power source. For example, the water pump assembly 3 is a traditional double-cylinder reciprocating pump, which can realize the suction and transportation of water. Among them, the left chamber and the right chamber refer to two spatial regions formed by the piston separating the cylinder, which are used for the inlet, outlet and storage of water.

[0031] One end of the first water supply pipeline is respectively communicated with the first water source group and the second water source group, and the other end is respectively communicated with the left chamber of the first cylinder and the left chamber of the second cylinder, and is used for conveying the cooling water of the first water source group / the heating water of the second water source group to the left chamber of the first cylinder and / or the left chamber of the second cylinder when cooling / heating the chamber 1.

[0032] One end of the second water supply pipeline is respectively communicated with the left chamber of the first cylinder and the left chamber of the second cylinder, and the other end is communicated with the chamber 1, and is used for conveying the cooling water / the heating water to the chamber 1 to cool / heat the chamber 1.

[0033] One end of the first water return pipeline 19 is connected to the chamber 1, and the other end thereof is respectively connected to the right chambers of the first cylinder block and the second cylinder block, and is used for recovering the water after cooling / heating the chamber 1 to the right chambers of the first cylinder block and / or the second cylinder block.

[0034] One end of the second water return pipeline is respectively connected to the right chambers of the first cylinder block and the second cylinder block, and the other end thereof is respectively connected to the first water source group and the second water source group, and is used for respectively conveying the recovered water in the right chambers of the first cylinder block and the second cylinder block to the corresponding water source groups.

[0035] When the present application is in use, in the initial state, according to the working state of the chamber 1, the left and right chambers of the first cylinder block and the second cylinder block are filled with water.

[0036] In the energy storage and inflation stage of the artificial chamber 1, high-pressure air at about 40°C is filled into the chamber 1. At this time, it is necessary to cool the chamber 1, so the valve connecting the second water source group is closed, and the valve connecting the first water source group is opened.

[0037] The first water source group provides cooling water at normal temperature (about 25°C), and the two pistons of the water pump assembly 3 move in opposite directions under the drive of the same power source. When the piston of the second cylinder block moves to the left, the cooling water in the left chamber of the second cylinder block is pressed into the artificial chamber 1 under the push of the piston. And, the recovered water is conveyed into the right chamber of the second cylinder block through the first water return pipeline 19 and the movement of the piston.

[0038] Meanwhile, when the piston of the second cylinder block moves to the left, the piston of the first cylinder block moves to the right. At this time, the pressure-relieved warm water (about 45°C) in the right chamber of the first cylinder block is discharged into the first water source group through the second water return pipeline. And, the cooling water is conveyed into the left chamber of the first cylinder block through the first water supply pipeline and the movement of the piston.

[0039] When the piston stroke is switched and the piston of the second cylinder block moves to the right and the piston of the first cylinder block moves to the left, the cooling water in the left chamber of the first cylinder block is pressed into the artificial chamber 1 through the second water supply pipeline, and the recovered water is introduced into its right chamber. Meanwhile, the pressure-relieved warm water in the right chamber of the second cylinder block is discharged into the first water source group through the second water return pipeline. The cooling water is conveyed into the left chamber of the second cylinder block through the first water supply pipeline.

[0040] The cooling water entering the chamber 1 fully contacts and exchanges heat with the air in the chamber 1, absorbing the heat generated by the compressed air. The water after heat exchange (about 45°C) flows into the bottom of the chamber 1, and enters the second cylinder and the right chamber of the first cylinder through the first return water pipeline 19. The pressure potential energy of part of the high-pressure warm water is used to assist in compressing the water in the left chamber of the corresponding cylinder, and the remaining pressure-relieved warm water returns to the first water source group through the second return water pipeline.

[0041] During the energy release and gas release stage of the artificial chamber 1, high-pressure air at about 40°C flows out of the chamber 1. At this time, the chamber 1 needs to be heated up, so the valve connected to the first water source group is closed and the valve connected to the second water source group is opened.

[0042] The heating process is similar to the cooling process, except that the first water source group is replaced with the heating water provided by the second water source group, so it will not be described in detail.

[0043] The present application constructs a complete cold and hot water circulation path by setting up independent cold and hot water source groups and specific water pipe connection methods, which can flexibly control the temperature of the chamber 1 to meet the needs of different working conditions and achieve heating or cooling functions. The structure is relatively simple and easy to maintain.

[0044] In one embodiment, if Figure 1 As shown, an atomizing nozzle 2 and a recovery pool are provided in the chamber 1. The atomizing nozzle 2 is connected to the second water supply pipeline, and the recovery pool is connected to the first return water pipeline 19.

[0045] In this embodiment, the atomizing nozzle 2 is installed in the chamber 1 and connected to the second water supply pipeline, which can atomize the incoming water into tiny water droplets to increase the contact area with the air in the chamber 1 and improve the heat exchange efficiency. The recovery water pool is arranged in the chamber 1 and connected to the first return water pipeline 19 to collect the water returned from various places in the chamber 1.

[0046] The atomizing nozzles 2 are evenly arranged along the axial direction of the chamber 1, the atomizing nozzles 2 are arranged at intervals of 3 meters, and the atomizing nozzles 2 with atomizing particle diameters of 200 um are used.

[0047] When the present application is used, the cooling water or heating water delivered from the second water delivery pipeline is sprayed into the chamber 1 in an atomized state through the atomizing nozzle 2, and fully contacts and exchanges heat with the air in the chamber 1, thereby achieving cooling or heating of the chamber 1. The water after heat exchange flows into the recovery pool and is recovered to the right chamber of the corresponding cylinder body through the first return water pipeline 19.

[0048] The present application increases the heat exchange area between water and air through the atomizing nozzle 2, making the heat exchange efficiency higher and the heat exchange effect more uniform, avoiding the local high or low temperature phenomenon in the chamber 1. The recycling pool is convenient for centralized water recycling and recycling.

[0049] In one embodiment, ifFigure 1 As shown, the first water source group includes a ground water tank 6, the second water source group includes a warm water tank 4 and a cold water tank 5, and the temperature of the cooling water in the ground water tank 6 is lower than the temperature of the heated water in the warm water tank 4.

[0050] In this embodiment, the ground water tank 6 is used to store cooling water at natural temperature. As the main component of the first water source group, the cooling water is water at a normal temperature of 25°C.

[0051] The warm water tank 4 is used to store heated water and serves as a container for providing heated water in the second water source group. The cold water tank 5 can be used to store recycled water after temperature reduction treatment. As a part of the second water source group, it can also play a role in regulating the water temperature and re - conveying the regulated water to the warm water tank 4. Among them, the water temperature in the warm water tank 4 is 90°C, and the water temperature in the cold water tank 5 is 45°C.

[0052] When this application is in use, the ground water tank 6 provides cooling water at a lower temperature for cooling the chamber 1. The warm water tank 4 provides heated water for heating the chamber 1. The cold water tank 5 receives the water flowing back from the right chamber of the cylinder block and is used to return the compressed heat during the next charging and energy storage stage of the compressed air energy storage system and then return to the warm water tank 4.

[0053] Moreover, recycling the thermal energy of the warm water tank 4 that is surplus in the compressed air energy storage system to heat the gas storage reservoir in the energy - releasing and air - discharging stage can improve the cycle efficiency of the compressed air energy storage system.

[0054] This application clarifies the specific composition of the first and second water source groups. Using the natural ground water tank 6 as the cooling water source has a lower cost.

[0055] Moreover, based on this embodiment, the heating process of the chamber 1 is as follows: The warm water tank 4 of the second water source group provides warm water (about 90°C). The two pistons of the water pump assembly 3 move in opposite directions under the drive of the same power source. When the piston of the second cylinder block moves to the left, the warm water in the left chamber of the second cylinder block is pressed into the artificial chamber 1 under the push of the piston through the second water supply pipeline. And the recycled water (high - pressure cold water at about 45°C) is conveyed into the right chamber of the second cylinder block through the first return pipeline 19 and the movement of the piston.

[0056] At the same time, when the piston of the second cylinder block moves to the left, the piston of the first cylinder block moves to the right. At this time, the pressure - relieved cold water (about 45°C) in the right chamber of the first cylinder block is discharged into the second water source group (cold water tank 5) through the second return pipeline. And the warm water is conveyed into the left chamber of the first cylinder block through the first water supply pipeline and the movement of the piston.

[0057] When the piston stroke is switched and the piston of the second cylinder block moves to the right while the piston of the first cylinder block moves to the left, the warm water in the left chamber of the first cylinder block is pressed into the artificial chamber 1 through the second water supply pipeline, and the recycled water is introduced into the right chamber of the first cylinder block. At the same time, the pressure-relieved cold water in the right chamber of the second cylinder block is discharged into the cold water tank 5 through the second water return pipeline, and the warm water is conveyed into the left chamber of the second cylinder block through the first water supply pipeline.

[0058] Among them, the warm water entering the chamber 1 is in full contact with the air in the chamber 1 for heat exchange, supplementing heat to the air that expands and cools continuously during the air release process. The water after heat exchange (about 45 °C) flows into the bottom of the chamber 1 and enters the right chambers of the second cylinder block and the first cylinder block through the first water return pipeline 19. The pressure potential energy of part of the high-pressure cold water is used to assist in compressing the water in the left chamber of the corresponding cylinder block, and the remaining pressure-relieved cold water returns to the cold water tank 5 through the second water return pipeline.

[0059] In an embodiment, as Figure 1 shown, the first water supply pipeline includes a first branch and a second branch. The water inlet end of the first branch is respectively connected to the ground water tank 6 and the warm water tank 4 through valves. The water outlet end of the first branch is connected to the water inlet end of the second branch. The water outlet end of the second branch is respectively connected to the left chamber of the first cylinder block and the left chamber of the second cylinder block through valves.

[0060] In this embodiment, the first branch is a part of the first water supply pipeline. The water inlet end is connected to the ground water tank 6 and the warm water tank 4, and the water outlet end is connected to the water inlet end of the second branch, playing the role of shunting and selecting the water source. The second branch is a part of the first water supply pipeline. The water inlet end is connected to the water outlet end of the first branch, and the water outlet end is connected to the left chambers of the first and second cylinder blocks, conveying the selected water to the cylinder blocks. The valves are installed at the pipeline connection points to control the on-off and flow direction of the water flow.

[0061] When this application is in use, when it is necessary to cool the chamber 1, the valve connecting the ground water tank 6 of the first branch is opened, and the valve connecting the warm water tank 4 is closed. The cooling water flows into the second branch through the first branch and then enters the left chambers of the first and second cylinder blocks through the second branch. When heating, it is the opposite, opening the valve connecting the warm water tank 4 and closing the valve connecting the ground water tank 6.

[0062] This application can be conveniently switched between cooling water and heating water by setting two branches and valves, realizing flexible heating or cooling control of the chamber 1, and has a simple structure, is easy to operate and maintain.

[0063] In an embodiment, as Figure 1As shown, the second water supply pipeline includes a third branch and a fourth branch, the two ends of the third branch are respectively connected to the left chamber of the first cavity and the atomizing nozzle 2, and the two ends of the fourth branch are respectively connected to the left chamber of the second cavity and the atomizing nozzle 2.

[0064] In this embodiment, the third branch is a part of the second water supply pipeline, connecting the left chamber of the first cylinder body with the atomizing nozzle 2, and delivering the water in the left chamber of the first cylinder body to the atomizing nozzle 2. The fourth branch is a part of the second water supply pipeline, connecting the left chamber of the second cylinder body with the atomizing nozzle 2, and delivering the water in the left chamber of the second cylinder body to the atomizing nozzle 2.

[0065] When the present application is used, when there is cooling water or heating water in the left chamber of the first cylinder, the water flows through the third branch to the atomizing nozzle 2 for spraying. Similarly, the water in the left chamber of the second cylinder flows through the fourth branch to the atomizing nozzle 2 for spraying, heating or cooling the chamber 1.

[0066] The present application respectively sets up branches connecting the two left chambers of the cylinder body and the atomizing nozzle 2, which improves the reliability and stability of the system, and can also more evenly transport water to various parts of the chamber 1, thereby improving the heat exchange effect.

[0067] In one embodiment, if Figure 1 As shown, the water inlet end of the first water return pipe 19 is connected to the recovery water tank, and the water outlet end thereof is connected to the right chamber of the first cylinder body and the right chamber of the second cylinder body through valves respectively.

[0068] In this embodiment, water flowing out of the water recovery pool of the chamber 1 flows in through the water inlet end of the first water return pipe 19, and then enters the right chamber of the first cylinder body or the right chamber of the second cylinder body according to the control of the valve.

[0069] The present application controls the flow direction of recycled water by setting valves, which can flexibly adjust the working status of the two cylinders, improve the flexibility of system operation, and at the same time ensure that the recycled water can smoothly return to the cylinders to achieve water recycling.

[0070] In one embodiment, if Figure 1 As shown, the water inlet end of the second water return pipeline is connected to the right chamber of the first cylinder body and the right chamber of the second cylinder body through valves, and the water outlet end thereof is connected to the ground water pool 6 and the cold water tank 5 through valves.

[0071] In this embodiment, the recovered water in the right chamber of the first cylinder body and the right chamber of the second cylinder body flows in through the water inlet end of the second water return pipe, and flows into the ground water pool 6 or the cold water tank 5 according to the valve control. If the recovered water is cooled water, it flows into the ground water pool 6; if it is heated water, it flows into the cold water tank 5 for subsequent treatment.

[0072] This application precisely controls the flow direction of the recycled water through valves, enabling it to return to the corresponding water source group, facilitating the classified treatment and recycling of water at different temperatures, improving the utilization efficiency of water resources, and reducing the operating costs.

[0073] In one embodiment, as Figure 1 shown, the temperature control system of the compressed air energy storage chamber 1 further includes a temperature measuring element 20 and a control component disposed in the chamber 1. The temperature measuring element 20 is used to monitor the temperature of the chamber 1 and send it to the control component, so that the control component adjusts the power of the water pump component.

[0074] In this embodiment, the temperature measuring element 20 is installed in the chamber 1 for real-time measurement of the air temperature in the chamber 1. The control component can receive the temperature signal transmitted by the temperature measuring element 20 and adjust the power of the water pump component according to a preset program.

[0075] When this application is in use, the temperature measuring element 20 monitors the temperature of the chamber 1 in real time and sends the temperature signal to the control component. The control component compares the received temperature signal with the preset target temperature. If the temperature is too high or too low, the control component correspondingly adjusts the power of the water pump component 3, and then adjusts the moving speed of the piston, changing the amount of water injected into the chamber.

[0076] In summary, as Figure 1 shown, the reference numerals 7-18 are valves for controlling the on-off of different components on different pipelines. 1) The working process of this application during the energy storage and charging stage of the artificial chamber 1 is as follows: When the artificial chamber 1 is in the energy storage and charging stage, high-pressure air at about 40°C is filled into the chamber. At this time, the valves connecting to the second water source group (valves 7 and 10 related to the warm water tank 4) are closed, and the valves connecting to the first water source group (valves 8 and 9 related to the ground water pool 6) are opened.

[0077] The normal temperature water at about 25°C in the ground water pool 6 continuously sprays and cools the air in the artificial chamber 1 under the drive of the water pump component 3. The first cylinder and the second cylinder of the water pump component 3 have opposite strokes, that is, when the piston in the first cylinder moves to the right, the piston in the second cylinder moves to the left. Among them, valves 12, 13, 15, and 18 form the first valve group, and valves 11, 14, 16, and 17 form the second valve group.

[0078] When the piston of the second cylinder in the water pump component 3 moves to the left and the piston of the first cylinder moves to the right, the first valve group is opened and the second valve group is closed.

[0079] At this time, the normal temperature water (about 25°C) in the left chamber of the second cylinder block is pressed into the artificial chamber 1 through the fourth branch, and is atomized into droplets of 200um by the atomizing nozzles 2 arranged at the top inside the chamber 1, and sprayed into the inside of the chamber 1, fully contacting and exchanging heat with the air, and absorbing the heat generated by the compression of the air during the charging process.

[0080] The droplets after fully exchanging heat with the air flow into the recovery water tank at the bottom of the artificial chamber 1. The high-pressure warm water at about 45°C in the recovery water tank flows into the right chamber of the second cylinder block through the first return water pipeline 19, recovering the pressure potential energy of the high-pressure warm water for assisting in compressing the water in the left chamber of the second cylinder block.

[0081] Meanwhile, the pressure-relieved warm water at about 45°C in the right chamber of the first cylinder block is discharged into the ground water tank 6 through the second return water pipeline for natural heat dissipation. The left chamber of the first cylinder block sucks in the normal temperature water (about 25°C) from the ground water tank 6 through the first branch, preparing for injecting water into the artificial chamber 1 in the next piston stroke.

[0082] When the piston strokes of the first cylinder block and the second cylinder block are switched, that is, when the piston of the second cylinder block moves to the right and the piston of the first cylinder block moves to the left, the second valve group is opened and the first valve group is closed.

[0083] At this time, the normal temperature water (about 25°C) in the left chamber of the first cylinder block is pressed into the artificial chamber 1 through the third branch, atomized by the atomizing nozzles 2 and exchanges heat with the air in the same way. The droplets after heat exchange flow into the recovery water tank, and the high-pressure warm water in the recovery water tank flows into the right chamber of the first cylinder block through the first return water pipeline 19 to recover the pressure potential energy. Meanwhile, the pressure-relieved warm water in the right chamber of the second cylinder block is discharged into the ground water tank 6 through the second return water pipeline, and the left chamber of the second cylinder block sucks in the normal temperature water, preparing for injecting water into the artificial chamber 1 in the next piston stroke.

[0084] In this way, the first cylinder block and the second cylinder block continuously and alternately inject water into the artificial chamber 1 for atomizing spray, cooling and absorbing the compression heat of the air, and controlling the air temperature in the chamber 1 at about 50°C. The power of the water pump assembly 3 can also be adjusted according to the deviation between the temperature signal detected by the temperature measuring element 20 inside the artificial chamber 1 and the target temperature control target value of 50°C.

[0085] 2) The working process of the present application in the energy release and air release stage of the artificial chamber 1 is specifically as follows: When the artificial chamber 1 is in the energy release and air release stage, the high-pressure air maintained at about 40°C flows out of the chamber 1. The valves connecting the second water source group (valves 7 and 10 related to the warm water tank 4) are opened, and the valves connecting the first water source group (valves 8 and 9 related to the ground water tank 6) are closed.

[0086] The warm water at about 90°C in the warm water tank 4, under the action of the water pump assembly 3, continuously sprays and heats the air in the artificial chamber 1. The working mode of the water pump assembly 3 is as before, with the two cylinders having opposite strokes, and the corresponding first valve group and second valve group controlling the water flow.

[0087] When the piston of the second cylinder body moves to the left and the piston of the first cylinder body moves to the right, the first valve group is opened and the second valve group is closed. The warm water at about 90°C in the left chamber of the second cylinder body is pressed into the artificial chamber 1 through the fourth branch, atomized into liquid droplets of 200um by the atomizing nozzle 2, and fully contacts and exchanges heat with the air that expands and cools continuously during the air release process to supplement heat.

[0088] The liquid droplets after heat exchange flow into the recovery pool in the artificial chamber 1. The high-pressure cold water at about 45°C in the recovery pool flows into the right chamber of the second cylinder body through the first return water pipeline 19, and the pressure potential energy of the recovered high-pressure cold water is used to compress the water in the left chamber of the second cylinder body.

[0089] At the same time, the pressure-relieved cold water at about 45°C in the right chamber of the first cylinder body is discharged into the cold water tank 5 through the second return water pipeline. The left chamber of the first cylinder body inhales warm water (about 90°C) from the warm water tank 4 through the first branch to prepare for injecting water into the artificial chamber 1 in the next piston stroke.

[0090] When the piston strokes of the first cylinder body and the second cylinder body are switched, that is, the piston of the second cylinder body moves to the right and the piston of the first cylinder body moves to the left, the second valve group is opened and the first valve group is closed. The warm water at about 90°C in the left chamber of the first cylinder body is pressed into the artificial chamber 1 through the third branch to exchange heat with the air. The liquid droplets after heat exchange flow into the recovery pool, and the high-pressure cold water in the recovery pool flows into the right chamber of the first cylinder body to recover the pressure potential energy. At the same time, the pressure-relieved cold water in the right chamber of the second cylinder body is discharged into the cold water tank 5, and the left chamber of the second cylinder body inhales warm water through the second branch.

[0091] In this way, the first cylinder body and the second cylinder body continuously and alternately inject water into the artificial chamber 1 for atomized spraying, supplement heat to the air that expands and cools continuously during the air release process, and control the air temperature in the chamber 1 at about 40°C. Moreover, the power of the water pump assembly 3 can be adjusted according to the deviation between the temperature signal detected by the temperature measuring component 20 inside the artificial chamber 1 and the target temperature control target value of 40°C.

[0092] Through the cooperation of the temperature measuring component 20 and the control component in this application, the automatic monitoring and precise control of the temperature in the chamber 1 are realized. The system operation parameters can be adjusted in a timely manner according to the actual temperature situation, the intelligent level of the system and the temperature control accuracy are improved, and the temperature in the chamber 1 is ensured to be always maintained within a suitable range.

[0093] The embodiment of this application also provides a regulation method, which adopts the temperature control system for the compressed air energy storage chamber as described above, as Figure 2As shown, the control method includes: S10. Obtain the working state of the compressed air energy storage system.

[0094] In this embodiment, the current working state is judged according to the working conditions of the compressed air energy storage system. The working state refers to different working modes such as whether the chamber 1 is in the energy storage inflation stage or the energy release deflation stage.

[0095] S20. Based on the working state, control the on-off of the first water supply pipeline with the first water source group and the second water source group to cool or heat the chamber.

[0096] S30. When it is determined to cool or heat the chamber, obtain the real-time temperature of the chamber 1.

[0097] In this embodiment, the real-time temperature is the current temperature inside the chamber 1 measured in real time by the temperature measuring element 20.

[0098] S40. Compare the real-time temperature with the target temperature, where the target temperature is the temperature that the chamber 1 needs to maintain, and the target temperature that the chamber 1 needs to maintain is different in different working states.

[0099] In this embodiment, the target temperature is a preset temperature value that needs to be maintained according to different working states of the chamber 1. For example, when the chamber 1 is in the inflation stage, the internal air temperature is controlled at about 50 °C, and when the chamber 1 is in the deflation stage, the internal air temperature is controlled at about 40 °C.

[0100] S50. Based on the comparison result, control the power of the water pump assembly, where the power of the water pump assembly is used to control the moving speed of the piston to determine the flow rate of the first water source group or the second water source group injected into the chamber.

[0101] In this embodiment, the system first obtains the working state of the compressed air energy storage system to determine the working state of the chamber 1 (such as inflation or deflation). Then, it obtains the real-time temperature of the chamber 1 and compares the real-time temperature with the target temperature corresponding to the working state.

[0102] After comparing the real-time temperature with the target temperature, if the temperature deviation is relatively significant, the control component will adjust the power of the water pump assembly 3, and then adjust the moving speed of the two pistons.

[0103] For example, in the inflation stage, if the real-time temperature is much higher than the target temperature of 50 °C, the moving speed of the piston is increased so that more cooling water can quickly enter the chamber 1 to enhance the cooling effect; in the deflation stage, if the real-time temperature is slightly lower than the target temperature of 40 °C, the moving speed of the piston is decreased to reduce the delivery volume of the heating water and prevent the temperature from rising too much.

[0104] Specifically, during the inflation stage, if the real-time temperature reaches 55°C, which has a relatively large deviation from the target temperature of 50°C, the control component increases the piston movement rate by 30% by adjusting the power of the water pump component 3, prompting more cooling water to be quickly injected into the chamber 1 to accelerate the cooling process.

[0105] During the deflation stage, if the real-time temperature is 39°C, which is lower than the target temperature of 40°C, the control component reduces the piston movement rate by 20% by adjusting the power of the water pump component 3 to slow down the delivery of the heating water and prevent the temperature from rising too fast.

[0106] Through the fine adjustment of the piston movement rate in this application, the system can further accurately control the flow rates of cold and hot water entering the chamber 1. During both the inflation and deflation stages, it can more precisely adjust the temperature of the chamber 1 according to the temperature deviation, greatly reducing the temperature fluctuation range, creating a more stable operating environment for the compressed air energy storage system, effectively ensuring the safety and efficient operation of the system, and extending the service life of the equipment.

[0107] The purpose of the embodiment of this application is to provide a control device, which adopts the aforementioned temperature control system for the compressed air energy storage chamber. The control device includes: A first acquisition module configured to acquire the working state of the compressed air energy storage system; A first control module configured to control the on / off of the first water supply pipeline with the first water source group and the second water source group based on the working state to cool or heat the chamber 1; A second acquisition module configured to acquire the real-time temperature of the chamber 1 when it is determined to cool or heat the chamber 1; A comparison module configured to compare the real-time temperature with the target temperature, where the target temperature is the temperature that the chamber 1 needs to maintain, and the target temperature that the chamber 1 needs to maintain is different under different working states; A second control module configured to control the power of the water pump component 3 based on the comparison result, where the power of the water pump component 3 is used to control the movement rate of the piston to determine the flow rate of the first water source group or the second water source group injected into the chamber 1.

[0108] The above embodiments are only exemplary embodiments of this application and are not used to limit this application. The protection scope of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of this application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of this application.

Claims

1. A temperature control system for a compressed air energy storage chamber, characterized in that, Applied to a chamber, including: A first water source group for providing cooling water; A second water source group for providing heating water; A water pump assembly including an independent first cylinder block and a second cylinder block, wherein pistons are respectively arranged in the first cylinder block and the second cylinder block, and the two pistons move in opposite directions under the drive of the same power source; A first water supply pipeline, one end of which is respectively communicated with the first water source group and the second water source group, and the other end of which is respectively communicated with the left chambers of the first cylinder block and the second cylinder block, and is used for conveying the cooling water of the first water source group / the heating water of the second water source group to the left chamber of the first cylinder block or the left chamber of the second cylinder block when cooling / heating the chamber; A second water supply pipeline, one end of which is respectively communicated with the left chambers of the first cylinder block and the second cylinder block, and the other end of which is communicated with the chamber, and is used for conveying the cooling water / the heating water to the chamber to cool / heat the chamber; A first water return pipeline, one end of which is communicated with the chamber, and the other end of which is respectively communicated with the right chambers of the first cylinder block and the second cylinder block, and is used for recovering the water after cooling / heating the chamber to the right chamber of the first cylinder block and / or the right chamber of the second cylinder block; A second water return pipeline, one end of which is respectively communicated with the right chambers of the first cylinder block and the second cylinder block, and the other end of which is respectively communicated with the first water source group and the second water source group, and is used for respectively conveying the recovered water in the right chambers of the first cylinder block and the second cylinder block to the corresponding water source groups.

2. The temperature control system for the compressed air energy storage chamber according to claim 1, wherein An atomizing nozzle and a recovery water pool are arranged in the chamber, the atomizing nozzle is communicated with the second water supply pipeline, and the recovery water pool is communicated with the first water return pipeline.

3. The temperature control system for the compressed air energy storage cavern as described in claim 2, characterized in that, The first water source group includes a ground water pool, the second water source group includes a warm water tank and a cold water tank, and the temperature of the cooling water in the ground water pool is lower than the temperature of the heating water in the warm water tank.

4. The temperature control system for the compressed air energy storage chamber as described in claim 3, wherein The first water supply pipeline includes a first branch and a second branch. The water inlet end of the first branch is respectively communicated with the ground water pool and the warm water tank through valves, the water outlet end of the first branch is communicated with the water inlet end of the second branch, and the water outlet end of the second branch is respectively communicated with the left chambers of the first cylinder block and the second cylinder block through valves.

5. The temperature control system for the compressed air energy storage chamber according to claim 3, wherein The second water supply pipeline includes a third branch and a fourth branch. The two ends of the third branch are respectively communicated with the left chamber of the first cavity and the atomizing nozzle, and the two ends of the fourth branch are respectively communicated with the left chamber of the second cavity and the atomizing nozzle.

6. The temperature control system for the compressed air energy storage chamber as described in claim 3, wherein, The water inlet end of the first water return pipeline is communicated with the recovery water pool, and its water outlet end is respectively communicated with the right chambers of the first cylinder block and the second cylinder block through valves.

7. The temperature control system for the compressed air energy storage chamber as described in claim 3, wherein The water inlet ends of the second water return pipeline are respectively communicated with the right chambers of the first cylinder block and the second cylinder block through valves, and its water outlet ends are respectively communicated with the ground water pool and the cold water tank through valves.

8. The temperature control system for the compressed air energy storage chamber as described in claim 1, characterized in that, The temperature control system for the compressed air energy storage chamber further includes a temperature measuring element and a control component disposed in the chamber. The temperature measuring element is used to monitor the temperature of the chamber and send it to the control component, so that the control component adjusts the power of the water pump component.

9. A control method, which adopts the temperature control system for a compressed air energy storage chamber as described in any one of claims 1 to 8, is characterized in that, The regulation method includes: Obtaining the working state of the compressed air energy storage system; Based on the working state, controlling the on / off of the first water supply pipeline with the first water source group and the second water source group to cool or heat the chamber; When it is determined to cool or heat the chamber, obtaining the real-time temperature of the chamber; Comparing the real-time temperature with the target temperature, where the target temperature is the temperature that the chamber needs to maintain, and the target temperature that the chamber needs to maintain is different under different working states; Based on the comparison result, controlling the power of the water pump component, where the power of the water pump component is used to control the moving speed of the piston to determine the flow rate of the first water source group or the second water source group injected into the chamber.

10. A control device, which adopts the temperature control system for the compressed air energy storage chamber as described in any one of claims 1 to 8, is characterized in that, The regulation device includes: A first acquisition module configured to obtain the working state of the compressed air energy storage system; A first control module configured to control the on / off of the first water supply pipeline with the first water source group and the second water source group based on the working state to cool or heat the chamber; A second acquisition module configured to obtain the real-time temperature of the chamber when it is determined to cool or heat the chamber; A comparison module configured to compare the real-time temperature with the target temperature, where the target temperature is the temperature that the chamber needs to maintain, and the target temperature that the chamber needs to maintain is different under different working states; A second control module configured to control the power of the water pump component based on the comparison result, where the power of the water pump component is used to control the moving speed of the piston to determine the flow rate of the first water source group or the second water source group injected into the chamber.

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