Compressed air energy storage chamber temperature control system

Abstract

The utility model discloses a compressed air energy storage chamber temperature control system, which is applied to a chamber and comprises a first water source group, a second water source group and a temperature control system, 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] This application relates to the field of energy storage engineering technology, and in particular to a compressed air energy storage chamber temperature control system. Background Technology

[0002] With the development of compressed air energy storage technology, artificial chambers are increasingly being used as storage facilities for compressed air energy storage systems in order to break free from the limitations of relying on salt cavern resources. Temperature control technology for these artificial chamber storage facilities is crucial, affecting the safety, efficiency, and economy of the compressed air energy storage system.

[0003] Currently, existing temperature control systems for artificial gas storage chambers have many shortcomings. On the one hand, traditional systems are inadequate in energy recovery and utilization, failing to fully utilize the energy generated during system operation, leading to energy waste and poor overall system economics. On the other hand, existing temperature control systems for artificial gas storage chambers only address the effect of gas filling and energy storage to suppress temperature rise, without mentioning the role of gas venting and energy release in suppressing temperature drop.

[0004] In conclusion, developing a high-efficiency temperature control system for artificial chamber gas storage that can overcome the aforementioned shortcomings is of vital practical significance for promoting the development of compressed air energy storage technology and enhancing its competitiveness in the energy sector. Summary of the Invention

[0005] The purpose of this application is to provide a compressed air energy storage chamber temperature control system, applied in a chamber, comprising:

[0006] The first water source group is used to provide cooling water;

[0007] The second water source group is used to provide heated water;

[0008] A water pump assembly includes a first cylinder and a second cylinder that are independent of each other. The first cylinder and the second cylinder are respectively provided with pistons, and the two pistons move in opposite directions under the drive of the same power source.

[0009] The first water supply pipeline has one end connected to the first water source group and the second water source group respectively, and the other end connected to the left chamber of the first cylinder and the left chamber of the second cylinder respectively. It is used to deliver 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 the chamber is cooled / heated.

[0010] The second water supply pipeline has one end connected to the left chamber of the first cylinder and the left chamber of the second cylinder respectively, and the other end connected to the chamber, for transporting the cooling water / heating water to the chamber to cool / heat the chamber.

[0011] The first return water pipeline has one end connected to the chamber and the other end connected to the right chamber of the first cylinder and the right chamber of the second cylinder, respectively, for recycling the water after cooling / heating the chamber to the right chamber of the first cylinder and / or the right chamber of the second cylinder.

[0012] The second return water pipeline has one end connected to the right chamber of the first cylinder and the right chamber of the second cylinder respectively, and the other end connected to the first water source group and the second water source group respectively, for transporting the recovered water in the right chamber of the first cylinder and the right chamber of the second cylinder to the corresponding water source group respectively.

[0013] As an optional embodiment, the chamber is equipped with an atomizing nozzle and a recycling water tank. The atomizing nozzle is connected to the second water supply pipeline, and the recycling water tank is connected to the first return water pipeline.

[0014] As an optional embodiment, the first water source group includes a ground water tank, and the second water source group includes a warm water tank and a cold water tank, wherein the temperature of the cooling water in the ground water tank is lower than the temperature of the heating water in the warm water tank.

[0015] As an optional embodiment, the first water supply pipeline includes a first branch and a second branch. The inlet of the first branch is connected to the ground water tank and the warm water tank through valves, respectively. The outlet of the first branch is connected to the inlet of the second branch, and the outlet of the second branch is connected to the left chamber of the first cylinder and the left chamber of the second cylinder through valves, respectively.

[0016] 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 connected to the left chamber of the first cavity and the atomizing nozzle, and the two ends of the fourth branch are respectively connected to the left chamber of the second cavity and the atomizing nozzle.

[0017] As an optional embodiment, the inlet end of the first return water pipeline is connected to the recycling water tank, and its outlet end is connected to the right chamber of the first cylinder and the right chamber of the second cylinder respectively through valves.

[0018] As an optional embodiment, the inlet of the second return water pipe is connected to the right chamber of the first cylinder and the right chamber of the second cylinder through valves, and its outlet is connected to the ground water tank and the cold water tank through valves.

[0019] As an optional embodiment, the compressed air energy storage chamber temperature control system 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 the data to the control component so that the control component can adjust the power of the water pump assembly.

[0020] The beneficial effects of the embodiments of this application are as follows:

[0021] This invention establishes independent first and second water source groups, connecting the water source groups to the left chambers of the first and second cylinders via a first water supply pipeline, and connecting the left chamber of the cylinder to the chamber via a second water supply pipeline, thus constructing a complete hot and cold water circulation path. This enables efficient and uniform cooling of the air in the chamber during the inflation phase, and similarly, efficient and uniform heating during the deflation phase, avoiding localized temperature anomalies.

[0022] This utility model water pump assembly adopts a double-acting two-cylinder reciprocating pump. The pistons in the two independent cylinders move in opposite directions under the drive of the same power source. It can cleverly utilize the reciprocating motion of the pistons to effectively save the power consumption generated by the water spray flow and provide a guarantee for the efficient operation of the system.

[0023] This invention can effectively utilize the excess heat from the compressed air energy storage system, thereby improving the circulation efficiency of the compressed air energy storage system; it can also control the temperature and pressure fluctuations inside the chamber, thus ensuring the structural safety of the surrounding rock and extending the service life of the sealing materials inside the chamber. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the compressed air energy storage chamber temperature control system according to an embodiment of this application;

[0025] Figure 2 This is a flowchart of the control method according to an embodiment of this application.

[0026] in,

[0027] 1. Chamber; 2. Atomizing nozzle; 3. Water pump assembly; 4. Warm water tank; 5. Cold water tank; 6. Ground water pool; 7-18. Valves; 19. First return water pipeline; 20. Temperature measuring device. Detailed Implementation

[0028] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0029] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0030] The accompanying drawings, which are included in and form part of this specification, illustrate 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, serve to explain the principles of the present application.

[0031] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0032] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0033] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0034] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0035] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0036] An embodiment of this application provides a compressed air energy storage chamber temperature control system, such as... Figure 1 As shown, it is applied to chamber 1 and includes a first water source group, a second water source group, a water pump assembly 3, a first water delivery pipeline, a second water delivery pipeline, a first return water pipeline 19 and a second return water pipeline.

[0037] The first water source group is used to provide cooling water, and the second water source group is used to provide heating water. The first water source group provides cooling water for lowering the temperature of chamber 1, such as a natural cooling water pool near the factory, which can continuously supply low-temperature water to the system. The second water source group provides heating water for raising the temperature of chamber 1, such as a water tank heated electrically or using waste heat from the system, which can provide hot water that meets the temperature increase requirements.

[0038] The water pump assembly 3 includes a first cylinder and a second cylinder, which are independent of each other. Pistons are respectively installed 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 conventional double-cylinder reciprocating pump, capable of pumping and transporting water. The left chamber and right chamber refer to two spatial regions separated by the pistons in the cylinder, used for water inflow, outflow, and storage.

[0039] One end of the first water supply pipeline is connected to the first water source group and the second water source group respectively, and the other end is connected to the left chamber of the first cylinder and the left chamber of the second cylinder respectively. It is used to deliver 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 the chamber 1 is cooled / heated.

[0040] One end of the second water supply pipeline is connected to the left chamber of the first cylinder and the left chamber of the second cylinder respectively, and the other end is connected to the chamber 1, for delivering the cooling water / heating water to the chamber 1 to cool / heat the chamber 1.

[0041] One end of the first return water pipe 19 is connected to the chamber 1, and the other end is connected to the right chamber of the first cylinder and the right chamber of the second cylinder respectively, for recycling the water after cooling / heating the chamber 1 to the right chamber of the first cylinder and / or the right chamber of the second cylinder.

[0042] One end of the second return water pipeline is connected to the right chamber of the first cylinder and the right chamber of the second cylinder respectively, and the other end is connected to the first water source group and the second water source group respectively, for transporting the recovered water in the right chamber of the first cylinder and the right chamber of the second cylinder to the corresponding water source group respectively.

[0043] In the initial state of application, according to the working state of chamber 1, the left and right chambers of the first and second cylinders are filled with water.

[0044] During the energy storage and air filling stage of artificial chamber 1, high-pressure air at approximately 40°C is introduced into chamber 1. At this time, chamber 1 needs to be cooled down, so the valve connecting to the second water source group is closed and the valve connecting to the first water source group is opened.

[0045] The first water source group provides cooling water at room temperature (approximately 25°C). The two pistons of the water pump assembly 3 move in opposite directions driven by the same power source. When the piston of the second cylinder moves to the left, the cooling water in the left chamber of the second cylinder is forced into the artificial chamber 1 via the second water supply pipe, pushed by the piston. Meanwhile, recycled water is transported to the right chamber of the second cylinder via the first return water pipe 19 and the movement of the piston.

[0046] Simultaneously, when the piston of the second cylinder moves to the left, the piston of the first cylinder moves to the right. At this time, the depressurized warm water (approximately 45°C) in the right chamber of the first cylinder is discharged into the first water source group through the second return water pipe. Furthermore, cooling water is transported to the left chamber of the first cylinder through the first water supply pipe and the movement of the piston.

[0047] When the piston stroke switches, with the piston of the second cylinder moving to the right and the piston of the first cylinder moving to the left, the cooling water in the left chamber of the first cylinder is pressurized into the artificial chamber 1 via the second water supply pipe, and recycled water is introduced into its right chamber. Simultaneously, the depressurized warm water in the right chamber of the second cylinder is discharged into the first water source group via the second return water pipe. Cooling water is then transported to the left chamber of the second cylinder via the first water supply pipe.

[0048] The cooling water entering chamber 1 comes into full contact with the air inside chamber 1 for heat exchange, absorbing the heat generated by the compression of the air. The water after heat exchange (approximately 45°C) flows into the bottom of chamber 1, and enters the second cylinder and the right chamber of the first cylinder through the first return water pipe 19. The pressure potential energy of some of the high-pressure warm water is used to assist in compressing the water in the corresponding left chamber of the cylinder, and the remaining depressurized warm water returns to the first water source group through the second return water pipe.

[0049] During the energy release and gas venting phase of artificial chamber 1, high-pressure air at approximately 40°C flows out of chamber 1. At this time, it is necessary to raise the temperature of chamber 1, so the valve connected to the first water source group is closed and the valve connected to the second water source group is opened.

[0050] 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.

[0051] This application constructs a complete hot and cold water circulation path by setting up independent hot and cold water source groups and specific water pipe connection methods. It can flexibly control the temperature of chamber 1 to meet the needs of different working conditions, realize the heating or cooling function, and the structure is relatively simple and easy to maintain.

[0052] In one embodiment, such as Figure 1 As shown, the chamber 1 is equipped with an atomizing nozzle 2 and a recovery water tank. The atomizing nozzle 2 is connected to the second water supply pipeline, and the recovery water tank is connected to the first return water pipeline 19.

[0053] In this embodiment, the atomizing nozzle 2 is installed inside the chamber 1 and connected to the second water supply pipeline. It atomizes the incoming water into tiny water droplets to increase the contact area with the air inside the chamber 1 and improve heat exchange efficiency. The recovery water tank is located inside the chamber 1 and connected to the first return water pipeline 19 to collect water returning from various parts of the chamber 1.

[0054] Among them, the atomizing nozzles 2 are evenly arranged along the axial direction of the chamber 1, with a spacing of 3 meters between them, and the atomizing nozzles 2 have an atomizing particle size of 200um.

[0055] In application, cooling water or heating water supplied from the second water supply pipeline is sprayed into the chamber 1 in an atomized state through the atomizing nozzle 2, allowing for full contact and heat exchange with the air inside the chamber 1, thereby cooling or heating the chamber 1. The water after heat exchange flows into the recovery water tank and is then recycled to the right chamber of the corresponding cylinder via the first return water pipeline 19.

[0056] This application increases the heat exchange area between water and air by using atomizing nozzles 2, resulting in higher heat exchange efficiency and more uniform heat exchange, thus avoiding localized high or low temperatures within chamber 1. The water recovery tank facilitates centralized water collection and recycling.

[0057] In one embodiment, such as Figure 1 As shown, the first water source group includes a ground water tank 6, and the second water source group includes a warm water tank 4 and a cold water tank 5. The temperature of the cooling water in the ground water tank 6 is lower than the temperature of the heating water in the warm water tank 4.

[0058] In this embodiment, the ground water tank 6 is used to store cooling water at natural temperature, which is a major component of the first water source group. The cooling water is water at room temperature of 25°C.

[0059] The warm water tank 4 stores heated water and serves as a container for providing heated water to the second water source group. The cold water tank 5 stores cooled recycled water, also part of the second water source group, and also functions to regulate water temperature before returning the regulated water to the warm water tank 4. The water temperature in the warm water tank 4 is 90℃, and the water temperature in the cold water tank 5 is 45℃.

[0060] In this application, the ground water tank 6 provides lower-temperature cooling water for cooling chamber 1. The warm water tank 4 provides heated water for heating chamber 1. The cold water tank 5 receives water returning from the right chamber of the cylinder, which is then returned to the warm water tank 4 after recovering the heat of compression in the next charging energy storage stage of the compressed air energy storage system.

[0061] Furthermore, reusing the heat energy from the surplus warm water tank 4 of the compressed air energy storage system to heat the gas storage tank in the energy release and gas dissipation stage can improve the circulation efficiency of the compressed air energy storage system.

[0062] This application clarifies the specific composition of the first and second water source groups, utilizing the natural ground water pool 6 as the cooling water source, which has a lower cost.

[0063] Furthermore, based on this embodiment, the heating process of chamber 1 is as follows:

[0064] The second water source group's warm water tank 4 provides warm water (approximately 90°C), and the two pistons of the water pump assembly 3 move in opposite directions driven by the same power source. When the piston of the second cylinder moves to the left, the warm water in the left chamber of the second cylinder is pushed by the piston and forced into the artificial chamber 1 through the second water supply pipe. Meanwhile, the recycled water (approximately 45°C high-pressure cold water) is transported to the right chamber of the second cylinder through the first return water pipe 19 and the movement of the piston.

[0065] Simultaneously, when the piston of the second cylinder moves to the left, the piston of the first cylinder moves to the right. At this time, the depressurized cold water (approximately 45°C) in the right chamber of the first cylinder is discharged into the second water source group (cold water tank 5) through the second return water pipe. Furthermore, warm water is transported to the left chamber of the first cylinder through the first water supply pipe and the movement of the piston.

[0066] When the piston stroke switches, with the piston of the second cylinder moving to the right and the piston of the first cylinder moving to the left, the warm water in the left chamber of the first cylinder is forced into the artificial chamber 1 through the second water supply pipe, while recycled water is introduced into the right chamber of the first cylinder. At the same time, the depressurized cold water in the right chamber of the second cylinder is discharged into the cold water tank 5 through the second return water pipe, and the warm water is transported to the left chamber of the second cylinder through the first water supply pipe.

[0067] The warm water entering chamber 1 exchanges heat with the air inside chamber 1, providing heat to the air that expands and cools during the venting process. The water (approximately 45°C) after heat exchange flows to the bottom of chamber 1 and enters the second cylinder and the right chamber of the first cylinder through the first return water pipe 19. Part of the pressure potential energy of the high-pressure cold water is used to assist in compressing the water in the corresponding left chamber of the cylinder, and the remaining depressurized cold water returns to the cold water tank 5 through the second return water pipe.

[0068] In one embodiment, such as Figure 1 As shown, the first water supply pipeline includes a first branch and a second branch. The inlet of the first branch is connected to the ground water tank 6 and the warm water tank 4 through valves, respectively. The outlet of the first branch is connected to the inlet of the second branch. The outlet of the second branch is connected to the left chamber of the first cylinder and the left chamber of the second cylinder through valves, respectively.

[0069] In this embodiment, the first branch is part of the first water supply pipeline, with its inlet end connected to the ground water tank 6 and the warm water tank 4, and its outlet end connected to the inlet end of the second branch, serving to divert and select the water source. The second branch is part of the first water supply pipeline, with its inlet end connected to the outlet end of the first branch, and its outlet end connected to the left chamber of the first and second cylinders, delivering the selected water to the cylinders. Valves are installed at the pipe connections to control the flow and direction of the water.

[0070] When this application is used, if it is necessary to cool down chamber 1, the valve connecting the first branch to the ground water tank 6 is opened, and the valve connecting to the warm water tank 4 is closed. Cooling water flows from the first branch to the second branch, and then enters the left chamber of the first and second cylinders through the second branch. When heating up, the opposite is true: the valve connecting to the warm water tank 4 is opened, and the valve connecting to the ground water tank 6 is closed.

[0071] This application allows for easy switching between cooling water and heating water by setting up two branches and valves, enabling flexible temperature control of chamber 1. The structure is simple and easy to operate and maintain.

[0072] In one embodiment, such as Figure 1 As 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.

[0073] In this embodiment, the third branch is part of the second water supply pipeline, connecting the left chamber of the first cylinder to the atomizing nozzle 2, and delivering water from the left chamber of the first cylinder to the atomizing nozzle 2. The fourth branch is part of the second water supply pipeline, connecting the left chamber of the second cylinder to the atomizing nozzle 2, and delivering water from the left chamber of the second cylinder to the atomizing nozzle 2.

[0074] In application, 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 and is sprayed out. Similarly, the water in the left chamber of the second cylinder flows through the fourth branch to the atomizing nozzle 2 and is sprayed out to heat or cool the chamber 1.

[0075] This application sets up branch lines connecting the left chambers of the two cylinders to the atomizing nozzle 2, which improves the reliability and stability of the system, and at the same time can deliver water more evenly to all parts of the chamber 1, thereby improving the heat exchange effect.

[0076] In one embodiment, such as Figure 1 As shown, the inlet end of the first return water pipe 19 is connected to the recycling water tank, and its outlet end is connected to the right chamber of the first cylinder and the right chamber of the second cylinder through valves respectively.

[0077] In this embodiment, the water flowing out of the recovery pool from chamber 1 flows in through the inlet end of the first return water pipe 19, and then enters the right chamber of the first cylinder or the right chamber of the second cylinder according to the control of the valve.

[0078] This application controls the flow direction of the recycled water by setting valves, which can flexibly adjust the working state of the two cylinders, improve the flexibility of system operation, and ensure that the recycled water can smoothly return to the cylinders, thus realizing the recycling of water.

[0079] In one embodiment, such as Figure 1 As shown, the inlet of the second return water pipe is connected to the right chamber of the first cylinder and the right chamber of the second cylinder through valves, and its outlet is connected to the ground water tank 6 and the cold water tank 5 through valves.

[0080] In this embodiment, the recycled water from the right chamber of the first cylinder and the right chamber of the second cylinder flows in through the inlet of the second return water pipe and, according to valve control, flows into the ground water tank 6 or the cold water tank 5, respectively. If the recycled water is cooled water, it flows into the ground water tank 6; if it is heated water, it flows into the cold water tank 5 for further processing.

[0081] This application uses valves to precisely control the flow of recycled water, returning it to the corresponding water source group. This facilitates the classification, treatment, and recycling of water at different temperatures, improving water resource utilization efficiency and reducing operating costs.

[0082] In one embodiment, such as Figure 1 As shown, the temperature control system of the compressed air energy storage chamber 1 also includes a temperature measuring element 20 and a control component installed 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 can adjust the power of the water pump component.

[0083] In this embodiment, the temperature sensor 20 is installed inside the chamber 1 to measure the air temperature inside the chamber 1 in real time. The control component can receive the temperature signal from the temperature sensor 20 and adjust the power of the water pump component according to a preset program.

[0084] In application, the temperature sensor 20 monitors the temperature of 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 adjusts the power of the water pump component 3 accordingly, thereby adjusting the piston's movement speed and changing the amount of water injected into the chamber.

[0085] In summary, as Figure 1 As shown, labels 7-18 represent valves on different pipelines that control the on / off state of different components. 1) The working process of this application in the energy storage and gas filling stage of the artificial chamber 1 is as follows:

[0086] When the artificial chamber 1 is in the energy storage and inflation stage, high-pressure air at approximately 40°C is injected into the chamber. At this time, the valves connected to the second water source group (valve 7 and valve 10 related to the warm water tank 4) are closed, and the valves connected to the first water source group (valve 8 and valve 9 related to the ground water tank 6) are opened.

[0087] The water at approximately 25°C in the ground water tank 6 continuously sprays and cools the air inside the artificial chamber 1, driven by the water pump assembly 3. The first and second cylinders of the water pump assembly 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. Valves 12, 13, 15, and 18 form the first valve group, and valves 11, 14, 16, and 17 form the second valve group.

[0088] When the piston of the second cylinder in the water pump assembly 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.

[0089] At this time, the room temperature water (about 25°C) in the left chamber of the second cylinder is forced into the artificial chamber 1 through the fourth branch. It is then atomized into 200um droplets by the atomizing nozzle 2 arranged at the top of the chamber 1 and sprayed into the interior of the chamber 1 to fully contact and exchange heat with the air, absorbing the heat generated by the compression of the air during the inflation process.

[0090] After sufficient heat exchange with the air, the droplets flow into the recovery water pool at the bottom of the artificial chamber 1. The high-pressure warm water at about 45°C in the recovery water pool flows into the right chamber of the second cylinder through the first return water pipe 19, recovering the pressure potential energy of the high-pressure warm water, which is used to assist in compressing the water in the left chamber of the second cylinder.

[0091] Meanwhile, the pressure relief water at about 45°C in the right chamber of the first cylinder is discharged into the ground water tank 6 through the second return water pipe for natural heat dissipation, and the left chamber of the first cylinder draws in room temperature water (about 25°C) from the ground water tank 6 through the first branch, in preparation for injecting water into the artificial chamber 1 in the next piston stroke.

[0092] When the piston strokes of the first and second cylinders switch, i.e., the piston of the second cylinder moves to the right and the piston of the first cylinder moves to the left, the second valve group is opened and the first valve group is closed.

[0093] At this time, the room-temperature water (approximately 25°C) in the left chamber of the first cylinder is pressurized into the artificial chamber 1 through the third branch, and then atomized by the atomizing nozzle 2 to exchange heat with the air. The heat-exchanged droplets 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 through the first return water pipe 19 to recover pressure potential energy. At the same time, the depressurized warm water in the right chamber of the second cylinder is discharged into the ground water tank 6 through the second return water pipe, and the left chamber of the second cylinder draws in room-temperature water through the second branch, preparing for the injection of water into the artificial chamber 1 in the next piston stroke.

[0094] In this way, the first and second cylinders alternately inject water into the artificial chamber 1, atomizing and spraying it to cool and absorb the heat of air compression, thus controlling the air temperature inside the chamber 1 at approximately 50°C. The power of the water pump assembly 3 can also be adjusted based on the deviation between the temperature signal detected by the temperature measuring device 20 inside the artificial chamber 1 and the target temperature control value of 50°C.

[0095] 2) The specific working process of this application in the energy release and venting stage of artificial chamber 1 is as follows:

[0096] When the artificial chamber 1 is in the energy release and gas release stage, high-pressure air at approximately 40°C flows out of the chamber 1. Open the valves connected to the second water source group (valve 7 and valve 10 related to the warm water tank 4) and close the valves connected to the first water source group (valve 8 and valve 9 related to the ground water pool 6).

[0097] The warm water in the warm water tank 4, at approximately 90°C, is continuously sprayed onto the air in the artificial chamber 1 to provide additional heat, under the action of the water pump assembly 3. The water pump assembly 3 operates as before, with the two cylinders having opposite strokes, and corresponding first and second valve groups controlling the water flow.

[0098] When the piston of the second cylinder 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. The warm water at about 90°C in the left chamber of the second cylinder is forced into the artificial chamber 1 through the fourth branch, and atomized into 200um droplets by the atomizing nozzle 2. The droplets fully contact and exchange heat with the air that is constantly expanding and cooling during the venting process, thus replenishing the heat.

[0099] After heat exchange, the droplets flow into the recovery water tank of the artificial chamber 1. The high-pressure cold water at about 45°C in the recovery water tank flows into the right chamber of the second cylinder through the first return water pipe 19. 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.

[0100] Meanwhile, the depressurized cold water at about 45°C in the right chamber of the first cylinder is discharged into the cold water tank 5 through the second return water pipe, and the left chamber of the first cylinder draws in warm water (about 90°C) from the warm water tank 4 through the first branch, in preparation for injecting water into the artificial chamber 1 in the next piston stroke.

[0101] When the piston strokes of the first and second cylinders switch (i.e., the piston of the second cylinder moves to the right and the piston of the first cylinder moves to the left), the second valve group opens and the first valve group closes. Warm water at approximately 90°C in the left chamber of the first cylinder is forced into the artificial chamber 1 through the third branch to exchange heat with the air. The resulting droplets flow into the recovery water tank, and the high-pressure cold water in the recovery water tank flows into the right chamber of the first cylinder to recover pressure potential energy. Simultaneously, the depressurized cold water in the right chamber of the second cylinder is discharged into the cold water tank 5, and warm water is drawn into the left chamber of the second cylinder through the second branch.

[0102] In this way, the first and second cylinders continuously and alternately inject water mist into the artificial chamber 1, replenishing the heat to the air that is constantly expanding and cooling during the venting process, and controlling the air temperature inside the chamber 1 at about 40°C. Furthermore, the power of the water pump assembly 3 can be adjusted based on the deviation between the temperature signal detected by the temperature measuring device 20 inside the artificial chamber 1 and the target temperature control value of 40°C.

[0103] This application achieves automatic monitoring and precise control of the temperature of chamber 1 through the cooperation of temperature measuring element 20 and control components. It can adjust the system operating parameters in a timely manner according to the actual temperature conditions, improve the intelligence level and temperature control accuracy of the system, and ensure that the temperature of chamber 1 is always maintained within a suitable range.

[0104] The working principle and steps of this invention:

[0105] S10. Obtain the operating status of the compressed air energy storage system.

[0106] In this embodiment, the current working state of the compressed air energy storage system is determined based on its operating conditions. The working state refers to different working modes, such as whether the chamber 1 is in the energy storage and charging stage or the energy release and venting stage.

[0107] S20. Based on the working state, control the connection and disconnection between the first water supply pipeline and the first water source group and the second water source group to cool or heat the chamber.

[0108] S30. If it is determined that the chamber should be cooled down or heated up, the real-time temperature of the chamber 1 is obtained.

[0109] In this embodiment, the real-time temperature is the current temperature inside the chamber 1 obtained by the temperature measuring device 20 in real time.

[0110] S40. Compare the real-time temperature with the target temperature, wherein 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 conditions.

[0111] In this embodiment, the target temperature is a pre-set temperature value that needs to be maintained according to different working states of chamber 1. For example, the internal air temperature of chamber 1 is controlled at about 50°C during the inflation stage and at about 40°C during the deflation stage.

[0112] S50. Based on the comparison results, control the power of the water pump assembly, wherein the power of the water pump assembly 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.

[0113] In this embodiment, the system first acquires the operating status of the compressed air energy storage system and determines the operating status of chamber 1 (such as inflation or deflation). Then, it acquires the real-time temperature of chamber 1 and compares the real-time temperature with the target temperature under the corresponding operating status.

[0114] After comparing the real-time temperature with the target temperature, if the temperature deviation is significant, the control component will adjust the power of the water pump component 3, thereby adjusting the movement speed of the two pistons.

[0115] For example, during the inflation stage, if the real-time temperature is significantly higher than the target temperature of 50°C, the piston movement speed is increased to allow more cooling water to quickly enter chamber 1, thus enhancing the cooling effect. During the deflation stage, if the real-time temperature is only slightly lower than the target temperature of 40°C, the piston movement speed is reduced to decrease the amount of heating water supplied and prevent the temperature from rising excessively.

[0116] Specifically, during the inflation stage, if the real-time temperature reaches 55°C, which is significantly different 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, thereby prompting more cooling water to be injected into the chamber 1 quickly and accelerating the cooling process.

[0117] During the venting phase, if the real-time temperature is 39℃, which is lower than the target temperature of 40℃, the control component will reduce the piston movement rate by 20% by adjusting the power of the water pump component 3, thereby slowing down the delivery of heated water and preventing the temperature from rising too quickly.

[0118] This application enables the system to more precisely control the flow rate of hot and cold water entering chamber 1 by finely adjusting the piston movement speed. During the inflation and deflation phases, the temperature of chamber 1 can be adjusted more accurately based on temperature deviations, greatly reducing temperature fluctuations and creating a more stable operating environment for the compressed air energy storage system. This effectively ensures the safe and efficient operation of the system and extends the service life of the equipment.

[0119] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A compressed air energy storage chamber temperature control system, characterized in that, Applied to chambers, including: The first water source group is used to provide cooling water; The second water source group is used to provide heated water; A water pump assembly includes a first cylinder and a second cylinder that are independent of each other. The first cylinder and the second cylinder are respectively provided with pistons, and the two pistons move in opposite directions under the drive of the same power source. The first water supply pipeline has one end connected to the first water source group and the second water source group respectively, and the other end connected to the left chamber of the first cylinder and the left chamber of the second cylinder respectively. It is used to deliver 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 the chamber is cooled / heated. The second water supply pipeline has one end connected to the left chamber of the first cylinder and the left chamber of the second cylinder respectively, and the other end connected to the chamber, for transporting the cooling water / heating water to the chamber to cool / heat the chamber. The first return water pipeline has one end connected to the chamber and the other end connected to the right chamber of the first cylinder and the right chamber of the second cylinder, respectively, for recycling the water after cooling / heating the chamber to the right chamber of the first cylinder and / or the right chamber of the second cylinder. The second return water pipeline has one end connected to the right chamber of the first cylinder and the right chamber of the second cylinder respectively, and the other end connected to the first water source group and the second water source group respectively, for transporting the recovered water in the right chamber of the first cylinder and the right chamber of the second cylinder to the corresponding water source group respectively.

2. The compressed air energy storage chamber temperature control system as described in claim 1, characterized in that, The chamber is equipped with an atomizing nozzle and a recycling water tank. The atomizing nozzle is connected to the second water supply pipeline, and the recycling water tank is connected to the first return water pipeline.

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

4. The compressed air energy storage chamber temperature control system as described in claim 3, characterized in that, The first water supply pipeline includes a first branch and a second branch. The inlet of the first branch is connected to the ground water tank and the warm water tank through valves, respectively. The outlet of the first branch is connected to the inlet of the second branch. The outlet of the second branch is connected to the left chamber of the first cylinder and the left chamber of the second cylinder through valves, respectively.

5. The compressed air energy storage chamber temperature control system as described in claim 3, characterized in that, 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, and the two ends of the fourth branch are respectively connected to the left chamber of the second cavity and the atomizing nozzle.

6. The compressed air energy storage chamber temperature control system as described in claim 3, characterized in that, The inlet of the first return water pipe is connected to the recycling water tank, and its outlet is connected to the right chamber of the first cylinder and the right chamber of the second cylinder through valves respectively.

7. The compressed air energy storage chamber temperature control system as described in claim 3, characterized in that, The inlet of the second return water pipe is connected to the right chamber of the first cylinder and the right chamber of the second cylinder through valves, and its outlet is connected to the ground water tank and the cold water tank through valves.

8. The compressed air energy storage chamber temperature control system as described in claim 1, characterized in that, The compressed air energy storage chamber temperature control system also includes a temperature measuring device and a control component installed in the chamber. The temperature measuring device is used to monitor the temperature of the chamber and send the data to the control component so that the control component can adjust the power of the water pump assembly.

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