A staggered time-sharing heat exchanger system and compressed air energy storage power station

Abstract

The present invention relates to a heat exchanger system and a compressed air energy storage power station that share time错开. The heat exchanger system that shares time错开 includes: a first cold tank; a first hot tank; a shared heat exchanger having a first refrigerant heat exchange channel and a first air heat exchange channel; the inlet of the first refrigerant heat exchange channel can be selectively connected to the outlet of the first cold tank or the outlet of the first hot tank; the outlet of the first refrigerant heat exchange channel can be selectively connected to the inlet of the first hot tank or the inlet of the first cold tank; the inlet of the first air heat exchange channel can be selectively connected to an air compressor or a gas storage device, and the outlet of the first air heat exchange channel can be selectively connected to the gas storage device or a turbine generator. Thus, the air compression process and the expansion power generation process share the shared heat exchanger, thereby avoiding the configuration of two sets of heat exchanger equipment, that is, reducing the number of heat exchanger equipment, which is beneficial to reducing the occupied space, reducing equipment investment, and improving the utilization rate of the equipment.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to a heat exchanger system for off-peak use and a compressed air energy storage power station. Background Technology

[0002] Compressed air energy storage power stations utilize excess electrical energy during periods of low load in the power system. Large air compressors compress the supplied air, which is then stored in salt caverns, artificial chambers, or high-pressure pipelines. During peak electricity demand, the compressed air is released to drive a turbine expander generator to generate electricity. This cycle of compression-high-pressure compressed air storage-power generation achieves both energy storage and peak-shaving purposes.

[0003] According to the principles of physics, air releases a large amount of heat when compressed; conversely, compressed air absorbs heat when it expands and does work. In other words, the air compression process in a compressed air energy storage power station is an exothermic process, requiring the storage of the heat generated during compression; the expansion and power generation process is an endothermic process, requiring the release of the heat stored during compression. Therefore, a heat exchange system is needed for both the air compression and expansion power generation processes.

[0004] As the capacity of compressed air energy storage power stations increases, the heat exchange systems for the air compression process and the expansion power generation process (i.e., two sets of heat exchange systems) occupy a large space, increasing equipment investment. However, according to the working characteristics of compressed air energy storage power stations, the compression process and the expansion power generation process work at different times and do not operate simultaneously, resulting in extremely low utilization rates of their respective heat exchange systems. Summary of the Invention

[0005] Therefore, it is necessary to address the problems of large space occupation, extremely low utilization rate, and large equipment investment in the heat exchange systems (i.e., two sets of heat exchange systems) of the air compression process and expansion power generation process in the existing compressed air energy storage power station, and to provide a time-sharing heat exchanger system and compressed air energy storage power station that improves the above defects.

[0006] A time-sharing heat exchanger system, comprising:

[0007] The first cold tank is used to store the first low-temperature refrigerant;

[0008] The first hot tank is used to store the first high-temperature refrigerant;

[0009] A shared heat exchanger has a first refrigerant heat exchange channel and a first air heat exchange channel for heat exchange between them; the inlet of the first refrigerant heat exchange channel may be selectively connected to the outlet of the first cold tank or the outlet of the first hot tank; the outlet of the first refrigerant heat exchange channel may be selectively connected to the inlet of the first hot tank or the inlet of the first cold tank; the inlet of the first air heat exchange channel may be selectively connected to an air compressor or an air storage device, and the outlet of the first air heat exchange channel may be selectively connected to the air storage device or a turbine generator.

[0010] The heat exchanger system is capable of switching between a first state and a second state. When the heat exchanger system is in the first state, the inlet of the first refrigerant heat exchange channel is connected to the outlet of the first cold tank, the outlet of the first refrigerant heat exchange channel is connected to the inlet of the first hot tank, the inlet of the first air heat exchange channel is connected to the air compressor, and the outlet of the first air heat exchange channel is connected to the gas storage device. When the heat exchanger system is in the second state, the inlet of the first refrigerant heat exchange channel is connected to the outlet of the first hot tank, the outlet of the first refrigerant heat exchange channel is connected to the inlet of the first cold tank, the inlet of the first air heat exchange channel is connected to the gas storage device, and the outlet of the first air heat exchange channel is connected to the turbine generator.

[0011] In one embodiment, a first input pipe is connected between the inlet of the first refrigerant heat exchange channel and the outlet of the first cold tank, and a second input pipe is connected between the inlet of the first refrigerant heat exchange channel and the outlet of the first hot tank; a first output pipe is connected between the outlet of the first refrigerant heat exchange channel and the inlet of the first hot tank, and a second output pipe is connected between the outlet of the first cold tank; a third input pipe is connected between the inlet of the first air heat exchange channel and the air compressor, and a fourth input pipe is connected between the inlet of the first air heat exchange channel and the air storage device; a third output pipe is connected between the outlet of the first air heat exchange channel and the air storage device, and a fourth output pipe is connected between the outlet of the first air heat exchange channel and the turbine generator.

[0012] When the heat exchanger system is in the first state, both the first input pipe and the first output pipe are connected, both the second input pipe and the second output pipe are disconnected, both the third input pipe and the third output pipe are connected, and both the fourth input pipe and the fourth output pipe are disconnected; when the heat exchanger system is in the second state, both the first input pipe and the first output pipe are disconnected, both the second input pipe and the second output pipe are connected, both the third input pipe and the third output pipe are disconnected, and both the fourth input pipe and the fourth output pipe are connected.

[0013] In one embodiment, a first control valve is installed on the first input pipeline, the first control valve being used to control the opening or closing of the first input pipeline; a second control valve is installed on the first output pipeline, the second control valve being used to control the opening or closing of the first output pipeline.

[0014] A third control valve is installed on the second input pipeline, which is used to control the second input pipeline to be open or closed; a fourth control valve is installed on the second output pipeline, which is used to control the second output pipeline to be open or closed.

[0015] A fifth control valve is installed on the third input pipeline, which is used to control the opening or closing of the third input pipeline; a sixth control valve is installed on the third output pipeline, which is used to control the opening or closing of the third output pipeline.

[0016] A seventh control valve is installed on the fourth input pipeline, which is used to control the opening or closing of the fourth input pipeline; an eighth control valve is installed on the fourth output pipeline, which is used to control the opening or closing of the fourth output pipeline.

[0017] In one embodiment, the heat exchanger system further includes a second cold tank, a second hot tank, and a first heat exchanger, wherein the second cold tank is used to store a second low-temperature refrigerant, and the second hot tank is used to store a second high-temperature refrigerant.

[0018] The first heat exchanger has a second refrigerant heat exchange channel and a second air heat exchange channel for heat exchange with each other. The inlet of the second refrigerant heat exchange channel is connected to the outlet of the second cold tank through a fifth input pipe, and the outlet of the second refrigerant heat exchange channel is connected to the inlet of the second hot tank through a fifth output pipe.

[0019] The inlet of the second air heat exchange channel is connected to the air compressor, and the third input pipeline is connected between the outlet of the second air heat exchange channel and the inlet of the first air heat exchange channel.

[0020] In one embodiment, the heat exchanger system further includes a second heat exchanger having a third refrigerant heat exchange passage and a third air heat exchange passage that exchange heat with each other.

[0021] The inlet of the third refrigerant heat exchange channel is connected to the outlet of the second hot tank through the sixth input pipe, and the outlet of the third refrigerant heat exchange channel is connected to the inlet of the second cold tank through the sixth output pipe.

[0022] The fourth output pipeline is connected between the inlet of the third air heat exchange channel and the outlet of the first air heat exchange channel, and the outlet of the third air heat exchange channel is connected to the turbine generator.

[0023] In one embodiment, the heat exchanger system further includes a third heat exchanger installed on the third output line for cooling compressed air flowing through the third output line.

[0024] In one embodiment, the heat exchanger system further includes a second cold tank, a second hot tank, and a first heat exchanger, wherein the second cold tank is used to store a second low-temperature refrigerant, and the second hot tank is used to store a second high-temperature refrigerant.

[0025] The first heat exchanger has a second refrigerant heat exchange channel and a second air heat exchange channel for heat exchange with each other. The inlet of the second refrigerant heat exchange channel is connected to the outlet of the second cold tank through a fifth input pipe, and the outlet of the second refrigerant heat exchange channel is connected to the inlet of the second hot tank through a fifth output pipe.

[0026] The third output pipeline is connected between the inlet of the second air heat exchange channel and the outlet of the first air heat exchange channel, and the outlet of the second air heat exchange channel is connected to the gas storage device through the first connecting pipeline.

[0027] In one embodiment, the heat exchanger system further includes a second heat exchanger having a third refrigerant heat exchange passage and a third air heat exchange passage for exchanging heat with each other.

[0028] The inlet of the third refrigerant heat exchange channel is connected to the outlet of the second hot tank via a sixth input pipe, and the outlet of the third refrigerant heat exchange channel is connected to the inlet of the second cold tank via a sixth output pipe; the inlet of the third air heat exchange channel is connected to the gas storage device via a second connecting pipe, and the fourth input pipe is connected between the outlet of the third air heat exchange channel and the inlet of the first air heat exchange channel.

[0029] In one embodiment, the heat exchanger system further includes a third heat exchanger installed on the first connecting pipe for cooling compressed air flowing through the first connecting pipe.

[0030] A compressed air energy storage power station includes an air compressor, a turbine generator, and a heat exchanger system that is shared in shifts as described in any of the above embodiments.

[0031] In the aforementioned staggered-time shared heat exchanger system and compressed air energy storage power station, during actual operation of the compressed air energy storage power station, when the power grid experiences a low electricity demand, the staggered-time shared heat exchanger system switches to its first state. At this time, the air compressor of the compressed air energy storage power station utilizes excess electrical energy to compress the air, creating high-pressure compressed air (this process generates a large amount of heat). Furthermore, the heat from the compressed air is transferred to a first low-temperature refrigerant through the shared heat exchanger, causing the first low-temperature refrigerant to heat up and form a first high-temperature refrigerant, which is then stored in a first heat tank. The compressed air, cooled by the shared heat exchanger, is stored in an air storage device.

[0032] When the compressed air energy storage power station is operating during peak grid electricity demand, the shared heat exchanger system switches to a second state. At this time, the storage device releases compressed air into the first air heat exchange channel of the shared heat exchanger. This allows the compressed air in the first air heat exchange channel to exchange heat with the first high-temperature refrigerant in the first refrigerant heat exchange channel, causing the first high-temperature refrigerant to cool down and form a first low-temperature refrigerant, while the compressed air heats up. Further, this first low-temperature refrigerant enters the first cold tank for storage through the outlet of the first refrigerant heat exchange channel. The heated compressed air then enters the turbine generator from the outlet of the first air heat exchange channel, thereby driving the turbine generator to generate electricity.

[0033] Thus, since the air compression and expansion power generation processes occur at different times, a shared heat exchanger is used to collect heat from the compressed air during air compression and to release heat back into the compressed air during expansion power generation. In other words, the air compression and expansion power generation processes share this common heat exchanger, thereby avoiding the need for two separate heat exchanger systems. This reduces the number of heat exchanger devices, which in turn reduces the required space, lowers equipment investment, and improves equipment utilization. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the staggered-time shared heat exchanger system in the first state according to the first embodiment of the present invention;

[0036] Figure 2 for Figure 1 The diagram shown is a structural schematic of the staggered-time shared heat exchanger system in its second state.

[0037] Figure 3 This is a schematic diagram of the structure of the staggered-time shared heat exchanger system in the first state according to the second embodiment of the present invention;

[0038] Figure 4 for Figure 3 The diagram shown is a structural schematic of the staggered-time shared heat exchanger system in its second state. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a compressed air energy storage power station, including an air compressor 100, a turbine generator 200, and a time-sharing heat exchanger system. The air compressor 100 utilizes excess electrical energy during periods of low power system load to compress air, thereby obtaining high-pressure compressed air. The air compressor 100 generates a large amount of heat during the air compression process. The turbine generator 200 is used to generate electricity using compressed air during peak electricity demand (i.e., an expansion power generation process), during which the compressed air expands and absorbs heat. The time-sharing heat exchanger system exchanges heat with the compressed air during the air compression process and stores the heat generated during air compression. The time-sharing heat exchanger system also exchanges heat with the released compressed air during the expansion power generation process, thereby providing heat for the expansion power generation process.

[0041] In embodiments of the present invention, the staggered-time shared heat exchanger system includes a first cold tank 10a, a first hot tank 10b, and a shared heat exchanger 20. The first cold tank 10a is used to store a first low-temperature refrigerant, and the first hot tank 10b is used to store a first high-temperature refrigerant. The shared heat exchanger 20 has a first refrigerant heat exchange channel (not shown) and a first air heat exchange channel (not shown) that exchange heat with each other, so that the refrigerant flowing through the first refrigerant heat exchange channel exchanges heat with the compressed air flowing through the first air heat exchange channel, thereby realizing the storage or release of heat.

[0042] The inlet e1 of the first refrigerant heat exchange channel can be selectively connected to either the outlet a1 of the first cold tank 10a or the outlet b1 of the first hot tank 10b. When the inlet e1 of the first refrigerant heat exchange channel is connected to the outlet a1 of the first cold tank 10a, the first low-temperature refrigerant stored in the first cold tank 10a can sequentially enter the first refrigerant heat exchange channel of the common heat exchanger 20 from the outlet a1 of the first cold tank 10a and the inlet e1 of the first refrigerant heat exchange channel, and exchange heat with the compressed air in the first air heat exchange channel of the common heat exchanger 20. When the inlet e1 of the first refrigerant heat exchange channel is connected to the outlet b1 of the first hot tank 10b, the first high-temperature refrigerant stored in the first hot tank 10b can sequentially enter the first refrigerant heat exchange channel of the common heat exchanger 20 from the outlet b1 of the first hot tank 10b and the inlet e1 of the first refrigerant heat exchange channel, and exchange heat with the compressed air in the first air heat exchange channel of the common heat exchanger 20.

[0043] The outlet e2 of the first refrigerant heat exchange channel can be selectively connected to either the inlet b2 of the first hot tank 10b or the inlet a2 of the first cold tank 10a. When the outlet e2 of the first refrigerant heat exchange channel is connected to the inlet b2 of the first hot tank 10b, the first low-temperature refrigerant in the first refrigerant heat exchange channel of the shared heat exchanger 20 undergoes heat exchange to form a first high-temperature refrigerant, which enters the first hot tank 10b for storage from the outlet e2 of the first refrigerant heat exchange channel and the inlet b2 of the first hot tank 10b. When the outlet e2 of the first refrigerant heat exchange channel is connected to the inlet a2 of the first cold tank 10a, the first high-temperature refrigerant in the first refrigerant heat exchange channel of the shared heat exchanger 20 undergoes heat exchange to form a first low-temperature refrigerant, which enters the first cold tank 10a for storage from the outlet e2 of the first refrigerant heat exchange channel and the inlet a2 of the first cold tank 10a.

[0044] The inlet f1 of the first air heat exchange channel can be selectively connected to either the air compressor 100 or the air storage device 300. When the inlet f1 of the first air heat exchange channel is connected to the air compressor 100, the compressed air generated by the air compressor 100 enters the first air heat exchange channel of the common heat exchanger 20. The compressed air in the first air heat exchange channel of the common heat exchanger 20 exchanges heat with the first low-temperature refrigerant in the first refrigerant heat exchange channel, so that the heat of the compressed air in the first air heat exchange channel of the common heat exchanger 20 is transferred to the first low-temperature refrigerant in the first refrigerant heat exchange channel, causing the compressed air to cool down and the first low-temperature refrigerant to heat up and become the first high-temperature refrigerant. When the inlet f1 of the first air heat exchange channel is connected to the gas storage device 300, the compressed air stored in the gas storage device 300 is released into the first air heat exchange channel of the common heat exchanger 20. This allows the compressed air in the first air heat exchange channel of the common heat exchanger 20 to exchange heat with the first high-temperature refrigerant in the first refrigerant heat exchange channel. Consequently, the compressed air absorbs heat from the first high-temperature refrigerant and expands, while the first high-temperature refrigerant releases heat and cools down to become the first low-temperature refrigerant. Optionally, the gas storage device 300 can be a salt cavern, an artificial chamber, or a high-pressure pipeline, etc.

[0045] The outlet f2 of the first air heat exchange channel can be selectively connected to either the gas storage device 300 or the turbine generator 200. When the outlet f2 of the first air heat exchange channel is connected to the gas storage device 300, the compressed air in the first air heat exchange channel of the shared heat exchanger 20 exchanges heat with the first low-temperature refrigerant in the first refrigerant heat exchange channel, and the cooled compressed air then enters the gas storage device 300 for storage through the outlet f2 of the first air heat exchange channel. When the outlet f2 of the first air heat exchange channel is connected to the turbine generator 200, the compressed air in the first air heat exchange channel of the shared heat exchanger 20 exchanges heat with the first high-temperature refrigerant in the first refrigerant heat exchange channel, and the heated compressed air then drives the turbine generator 200 to generate electricity.

[0046] The staggered-time shared heat exchanger system can be used in the first state (see Figure 1 (as shown) and the second state (see) Figure 2The system switches between states as shown. When the shared heat exchanger system switches to the first state, the inlet e1 of the first refrigerant heat exchange channel is connected to the outlet a1 of the first cold tank 10a, the outlet e2 of the first refrigerant heat exchange channel is connected to the inlet b2 of the first hot tank 10b, the inlet f1 of the first air heat exchange channel is connected to the air compressor 100, and the outlet f2 of the first air heat exchange channel is connected to the air storage device 300. In actual use, the compressed air generated by the operation of the air compressor 100 enters the first air heat exchange channel of the shared heat exchanger 20 (because a large amount of heat is generated when compressing air, the compressed air entering the first air heat exchange channel is at a high temperature at this time). At the same time, the first low-temperature refrigerant stored in the first cold tank 10a enters the first refrigerant heat exchange channel of the shared heat exchanger 20, so that the compressed air in the first air heat exchange channel of the shared heat exchanger 20 transfers heat to the first low-temperature refrigerant in the first refrigerant heat exchange channel of the shared heat exchanger 20, thereby cooling the compressed air and raising the temperature of the first low-temperature refrigerant to the first high-temperature refrigerant. Then, the first high-temperature refrigerant enters the first heat tank 10b from the outlet e2 of the first refrigerant heat exchange channel for storage. The cooled compressed air enters the air storage device 300 from the outlet f2 of the first air heat exchange channel for storage, thus completing the air compression process. In other words, when the staggered shared heat exchanger system is in the first state, the above-mentioned air compression process can be realized, using the heat generated by the compressed air to convert the first low-temperature refrigerant into the first high-temperature refrigerant, and storing the first high-temperature refrigerant in the first heat tank 10b.

[0047] When the shared heat exchanger system switches to the second state (see...) Figure 2When the first refrigerant heat exchange channel is in operation, its inlet e1 is connected to the outlet b1 of the first hot tank 10b, its outlet e2 is connected to the inlet a2 of the first cold tank 10a, its inlet f1 is connected to the gas storage device 300, and its outlet f2 is connected to the turbine generator 200. In actual use, the compressed air released from the gas storage device 300 enters the first air heat exchange channel of the common heat exchanger 20, while simultaneously, the first high-temperature refrigerant stored in the first hot tank 10b enters the first refrigerant heat exchange channel of the common heat exchanger 20. The compressed air in the first air heat exchange channel of the common heat exchanger 20 absorbs heat from the first high-temperature refrigerant in the first refrigerant heat exchange channel, thus raising the temperature of the compressed air and cooling the first high-temperature refrigerant to become the first low-temperature refrigerant. The first low-temperature refrigerant in the first refrigerant heat exchange channel of the shared heat exchanger 20 enters the first cold tank 10a for storage. The heated compressed air in the first air heat exchange channel of the shared heat exchanger 20 enters the turbine generator 200, thereby driving the turbine generator 200 to generate electricity, thus completing the expansion power generation process. In other words, when the staggered shared heat exchanger system is in the second state, the expansion power generation process is completed. The first high-temperature refrigerant in the first hot tank 10b is used to heat the released compressed air, and the heated compressed air drives the turbine generator 200 to generate electricity.

[0048] The aforementioned shared heat exchanger system, during actual operation of the compressed air energy storage power station, switches to its first state when the power station is in a period of low grid demand (see...). Figure 1 At this time, the air compressor 100 of the compressed air energy storage power station uses excess electrical energy to compress the air, that is, to compress the taken air and form high-pressure compressed air (this process generates a large amount of heat). Furthermore, the heat of the compressed air is transferred to the first low-temperature refrigerant through the shared heat exchanger 20, causing the first low-temperature refrigerant to heat up and form a first high-temperature refrigerant, which is then stored in the first heat tank 10b. The compressed air, after being cooled by the shared heat exchanger 20, is stored in the air storage device 300.

[0049] When the compressed air energy storage power station is in peak electricity demand, the heat exchanger system, which is used in a time-sharing manner, switches to the second state (see...). Figure 2At this time, the gas storage device 300 releases compressed air into the first air heat exchange channel of the common heat exchanger 20, allowing the compressed air in the first air heat exchange channel of the common heat exchanger 20 to exchange heat with the first high-temperature refrigerant in the first refrigerant heat exchange channel. This causes the first high-temperature refrigerant to cool down and form a first low-temperature refrigerant, while the compressed air heats up. Further, the first low-temperature refrigerant enters the first cold tank 10a for storage through the outlet e2 of the first refrigerant heat exchange channel. The heated compressed air then enters the turbine generator 200 through the outlet f2 of the first air heat exchange channel, thereby driving the turbine generator 200 to generate electricity.

[0050] Thus, since the air compression process and the expansion power generation process occur at different times, the heat from the compressed air is collected using a shared heat exchanger 20 during air compression, and the heat is released back to the compressed air using the shared heat exchanger 20 during expansion power generation. In other words, the air compression process and the expansion power generation process share the same shared heat exchanger 20, thereby avoiding the need for two separate heat exchanger systems. This reduces the number of heat exchanger systems, which in turn reduces the required space, lowers equipment investment, and improves equipment utilization.

[0051] Specifically, in this embodiment, a first input pipe 21 connects the inlet e1 of the first refrigerant heat exchange channel to the outlet a1 of the first cold tank 10a, and a second input pipe 22 connects the inlet e1 of the first refrigerant heat exchange channel to the outlet b1 of the first hot tank 10b. A first output pipe 24 connects the outlet e2 of the first refrigerant heat exchange channel to the inlet b2 of the first hot tank 10b, and a second output pipe 23 connects the outlet e2 of the first refrigerant heat exchange channel to the inlet a2 of the first cold tank 10a. A third input pipe 25 connects the inlet f1 of the first air heat exchange channel to the air compressor 100, and a fourth input pipe 26 connects the inlet f1 of the first air heat exchange channel to the gas storage device 300. A third output pipe 27 connects the outlet f2 of the first air heat exchange channel to the gas storage device 300, and a fourth output pipe 28 connects the outlet f2 of the first air heat exchange channel to the turbine generator 200.

[0052] When the heat exchanger system is in the first state (see...) Figure 1When the first input pipe 21 and the first output pipe 24 are both open, the second input pipe 22 and the second output pipe 23 are both closed, so that the inlet e1 of the first refrigerant heat exchange channel is connected to the outlet a1 of the first cold tank 10a through the first input pipe 21, and the outlet e2 of the first refrigerant heat exchange channel is connected to the inlet b2 of the first hot tank 10b through the first output pipe 24. Thus, the first low-temperature refrigerant in the first cold tank 10a can enter the first refrigerant heat exchange channel of the common heat exchanger 20 through the first input pipe 21 for heat exchange and heating, and the first high-temperature refrigerant formed by heat exchange and heating can enter the first hot tank 10b for storage through the first output pipe 24. Simultaneously, the third input pipe 25 and the third output pipe 27 are both open, while the fourth input pipe 26 and the fourth output pipe 28 are both closed. This allows the inlet f1 of the first air heat exchange channel to be connected to the air compressor 100 through the third input pipe 25, and the outlet f2 of the first air heat exchange channel to be connected to the air storage device 300 through the third output pipe 27. Consequently, the compressed air generated by the operation of the air compressor 100 enters the first air heat exchange channel of the common heat exchanger 20 through the third input pipe 25 for heat exchange and cooling. The cooled compressed air then enters the air storage device 300 for storage through the third output pipe 27.

[0053] When the heat exchanger system is in the second state (see...) Figure 2 When the first input pipe 21 and the first output pipe 24 are both cut off, the second input pipe 22 and the second output pipe 23 are both connected, so that the inlet e1 of the first refrigerant heat exchange channel is connected to the outlet b1 of the first hot tank 10b through the second input pipe 22, and the outlet e2 of the first refrigerant heat exchange channel is connected to the inlet a2 of the first cold tank 10a through the second output pipe 23. Thus, the first high-temperature refrigerant stored in the first hot tank 10b enters the first refrigerant heat exchange channel of the common heat exchanger 20 through the second input pipe 22 for heat exchange and cooling. The first low-temperature refrigerant formed after heat exchange and cooling enters the first cold tank 10a for storage through the second output pipe 23. Simultaneously, the third input pipe 25 and the third output pipe 27 are both closed, while the fourth input pipe 26 and the fourth output pipe 28 are both open, so that the inlet f1 of the first air heat exchange channel is connected to the gas storage device 300 through the fourth input pipe 26, and the outlet f2 of the first air heat exchange channel is connected to the turbine generator 200 through the fourth output pipe 28. This allows the compressed air in the gas storage device 300 to enter the first air heat exchange channel of the common heat exchanger 20 through the fourth input pipe 26 for heat exchange and temperature increase. The compressed air after heat exchange and temperature increase can drive the turbine generator 200 to generate electricity through the fourth output pipe 28.

[0054] Furthermore, a first control valve A1 is installed on the first input line 21, which controls the opening or closing of the first input line 21. A second control valve A4 is installed on the first output line 24, which controls the opening or closing of the first output line 24. A third control valve A2 is installed on the second input line 22, which controls the opening or closing of the second input line 22. A fourth control valve A3 is installed on the second output line 23, which controls the opening or closing of the second output line 23. A fifth control valve A5 is installed on the third input line 25, which controls the opening or closing of the third input line 25. A sixth control valve A7 is installed on the third output line 27, which controls the opening or closing of the third output line 27. A seventh control valve A6 is installed on the fourth input line 26, which controls the opening or closing of the fourth input line 26. An eighth control valve A8 is installed on the fourth output line 28. The eighth control valve A8 is used to control the opening or closing of the fourth output line 28.

[0055] Thus, when the staggered shared heat exchanger system is in the first state (see...) Figure 1 When the first control valve A1 controls the first input line 21 to open, the second control valve A4 controls the first output line 24 to open, the third control valve A2 controls the second input line 22 to close, the fourth control valve A3 controls the second output line 23 to close, the fifth control valve A5 controls the third input line 25 to open, the sixth control valve A7 controls the third output line 27 to open, the seventh control valve A6 controls the fourth input line 26 to close, and the eighth control valve A8 controls the fourth output line 28 to close.

[0056] When the staggered shared heat exchanger system is in the second state (see...) Figure 2 When the first control valve A1 controls the first input line 21 to be cut off, the second control valve A4 controls the first output line 24 to be cut off, the third control valve A2 controls the second input line 22 to be open, the fourth control valve A3 controls the second output line 23 to be open, the fifth control valve A5 controls the third input line 25 to be cut off, the sixth control valve A7 controls the third output line 27 to be cut off, the seventh control valve A6 controls the fourth input line 26 to be open, and the eighth control valve A8 controls the fourth output line 28 to be open.

[0057] Furthermore, a first pump 210 is installed on the first input pipe 21. This first pump 210 is used to provide driving force for the flow of the first cryogenic refrigerant in the first cold tank 10a to the inlet e1 of the first refrigerant heat exchange channel of the shared heat exchanger 20. Thus, when the staggered shared heat exchanger system is in the first state, the first pump 210 is used to pump the first cryogenic refrigerant in the first cold tank 10a into the first refrigerant heat exchange channel of the shared heat exchanger 20.

[0058] Furthermore, a second pump 221 is installed on the second input pipe 22. This second pump 221 is used to provide driving force for the flow of the first high-temperature refrigerant in the first hot tank 10b to the inlet e1 of the first refrigerant heat exchange channel. Thus, when the shared heat exchanger system is in the second state, the second pump 221 pumps the first high-temperature refrigerant in the first hot tank 10b to the first refrigerant heat exchange channel of the shared heat exchanger 20.

[0059] Please see Figure 1 and Figure 2 As shown, in the first embodiment of the present invention, the heat exchanger system further includes a second cold tank 10c, a second hot tank 10d, and a first heat exchanger 30. The second cold tank 10c is used to store a second low-temperature refrigerant, and the second hot tank 10d is used to store a second high-temperature refrigerant. The first heat exchanger 30 has a second refrigerant heat exchange channel and a second air heat exchange channel for heat exchange with each other. The inlet g1 of the second refrigerant heat exchange channel is connected to the outlet c1 of the second cold tank 10c through a fifth input pipe 31, and the outlet g2 of the second refrigerant heat exchange channel is connected to the inlet d2 of the second hot tank 10d through a fifth output pipe 32, thereby enabling the second low-temperature refrigerant in the second cold tank 10c to be transported to the second refrigerant heat exchange channel of the first heat exchanger 30 through the fifth input pipe 31 during air compression.

[0060] The inlet h1 of the second air heat exchange channel is connected to the air compressor 100, and the third input pipe 25 is connected between the outlet h2 of the second air heat exchange channel and the inlet f1 of the first air heat exchange channel, so that the compressed air generated by the air compressor 100 during the air compression process can enter the second air heat exchange channel of the first heat exchanger 30. At this time, the second low-temperature refrigerant in the second refrigerant heat exchange channel of the first heat exchanger 30 exchanges heat with the compressed air in the second air heat exchange channel, so that the heat of the compressed air is transferred to the second low-temperature refrigerant, causing the second low-temperature refrigerant to heat up and form the second high-temperature refrigerant. The second high-temperature refrigerant formed by heating in the second refrigerant heat exchange channel of the first heat exchanger 30 enters the second heat tank 10d for storage through the fifth output pipe 32. At the same time, the compressed air that has been cooled down for the first time in the second air heat exchange channel of the first heat exchanger 30 re-enters the first air heat exchange channel of the common heat exchanger 20 for a second cooling.

[0061] Furthermore, when the staggered shared heat exchanger system is in the first state (see...) Figure 1When the above-mentioned fifth input pipe 31 and fifth output pipe 32 are both open, the second low-temperature refrigerant in the second cold tank 10c can enter the second refrigerant heat exchange channel of the first heat exchanger 30 through the fifth input pipe 31 for heat exchange and temperature rise. The second high-temperature refrigerant formed by heat exchange and temperature rise can enter the second hot tank 10d for storage through the fifth output pipe 32. When the shared heat exchanger system is in the second state (see...), Figure 2 When the fifth input line 31 and the fifth output line 32 are both shut off, the first heat exchanger 30 is in a non-operating state. Optionally, a ninth control valve A11 is installed on the fifth input line 31 to control the opening or closing of the fifth input line 31. A tenth control valve A9 is installed on the fifth output line 32 to control the opening or closing of the fifth output line 32.

[0062] Furthermore, a third pump 310 is installed on the fifth input line 31, which is used to provide the driving force for the second low-temperature refrigerant in the second cold tank 10c to flow through the fifth input line 31 to the second refrigerant heat exchange channel of the first heat exchanger 30.

[0063] Furthermore, the staggered-time shared heat exchanger system also includes a third heat exchanger 50, which is installed on the aforementioned third output pipe 27 and used to cool the compressed air flowing through the third output pipe 27. Thus, during air compression, the compressed air generated by the air compressor 100 undergoes three stages of cooling: the first heat exchanger 30, the shared heat exchanger 20, and the third heat exchanger 50, resulting in compressed air with a temperature reduced to meet design requirements.

[0064] Furthermore, the staggered-time shared heat exchanger system also includes a second heat exchanger 40, which has a third refrigerant heat exchange channel and a third air heat exchange channel for heat exchange with each other. The inlet i1 of the third refrigerant heat exchange channel is connected to the outlet d1 of the second hot tank 10d through a sixth input pipe 41, and the outlet i2 of the third refrigerant heat exchange channel is connected to the inlet c2 of the second cold tank 10c through a sixth output pipe 42, thereby enabling the second high-temperature refrigerant in the second hot tank 10d to enter the third refrigerant heat exchange channel of the second heat exchanger 40 through the sixth input pipe 41 during the expansion power generation process.

[0065] The fourth output pipe 28 connects the inlet j1 of the third air heat exchange channel and the outlet f2 of the first air heat exchange channel. The outlet j2 of the third air heat exchange channel is connected to the turbine generator 200. This allows the compressed air released from the gas storage device 300 during the expansion power generation process to undergo a first temperature increase in the first air heat exchange channel of the shared heat exchanger 20, and then enter the third air heat exchange channel of the second heat exchanger 40 through the fourth output pipe 28 for a second temperature increase. Specifically, the compressed air in the third air heat exchange channel of the second heat exchanger 40 exchanges heat with the second high-temperature refrigerant in the third refrigerant heat exchange channel, causing the compressed air to heat up a second time. The second high-temperature refrigerant cools down to form the second low-temperature refrigerant. The compressed air, after being heated twice, drives the turbine generator 200 to generate electricity. The second low-temperature refrigerant in the third refrigerant heat exchange channel of the second heat exchanger 40 enters the second cold tank 10c through the sixth output pipe 42.

[0066] Furthermore, when the staggered shared heat exchanger system is in the first state (see...) Figure 1 When the sixth input pipe 41 and the sixth output pipe 42 are both cut off, the second heat exchanger 40 is in a non-operating state. When the shared heat exchanger system is in the second state (see...), Figure 2 When the sixth input pipe 41 and the sixth output pipe 42 are connected, the second high-temperature refrigerant in the second hot tank 10d can enter the third refrigerant heat exchange channel of the second heat exchanger 40 through the sixth input pipe 41 for heat exchange and cooling. The second low-temperature refrigerant formed after heat exchange and cooling can enter the second cold tank 10c through the sixth output pipe 42. Optionally, an eleventh control valve A10 is installed on the sixth input pipe 41, which is used to control the opening or closing of the sixth input pipe 41. A twelfth control valve A12 is installed on the sixth output pipe 42, which is used to control the opening or closing of the sixth output pipe 42.

[0067] Furthermore, a fourth pump 411 is installed on the sixth input line 41. The fourth pump 411 is used to provide the driving force for the second high-temperature refrigerant in the second hot tank 10d to flow through the sixth input line 41 to the third refrigerant heat exchange channel of the second heat exchanger 40.

[0068] In one specific embodiment, the common heat exchanger 20 is a medium-temperature medium heat exchanger. For example, the first low-temperature refrigerant and the first high-temperature refrigerant can be hot water, that is, the common heat exchanger 20 is a hot water-gas heat exchanger.

[0069] Both the first heat exchanger 30 and the second heat exchanger 40 are high-temperature medium heat exchangers. For example, the second low-temperature refrigerant and the second high-temperature refrigerant are heat transfer oil or molten salt. That is, both the first heat exchanger 30 and the second heat exchanger 40 are heat transfer oil-gas heat exchangers or molten salt-gas heat exchangers.

[0070] The third heat exchanger 50 is a low-temperature medium heat exchanger, for example, the third heat exchanger 50 is a circulating water cooler.

[0071] It should also be noted that the common heat exchanger 20 in this article can be a single heat exchanger, or multiple heat exchangers connected in parallel or series, without limitation. Similarly, the first heat exchanger 30 can be a single heat exchanger, or multiple heat exchangers connected in parallel or series, without limitation. The second heat exchanger 40 can be a single heat exchanger, or multiple heat exchangers connected in parallel or series, without limitation. The third heat exchanger 50 can be a single heat exchanger, or multiple heat exchangers connected in parallel or series, without limitation.

[0072] The following is combined Figure 1 The air compression process in the first embodiment will be described as follows:

[0073] First, the first control valve A1 controls the first input line 21 to open, the second control valve A4 controls the first output line 24 to open, the third control valve A2 controls the second input line 22 to close, the fourth control valve A3 controls the second output line 23 to close, the fifth control valve A5 controls the third input line 25 to open, the sixth control valve A7 controls the third output line 27 to open, the seventh control valve A6 controls the fourth input line 26 to close, the eighth control valve A8 controls the fourth output line 28 to close, the ninth control valve A11 controls the fifth input line 31 to open, the tenth control valve A9 controls the fifth output line 32 to open, the eleventh control valve A10 controls the first input line 41 to close, and the twelfth control valve A12 controls the sixth output line 42 to close, thereby putting the staggered-time shared heat exchanger system into the first state.

[0074] Then, the air compressor 100 compresses the air it takes in, and the resulting compressed air enters the second air heat exchange channel of the first heat exchanger 30. At the same time, the second low-temperature refrigerant in the second cold tank 10c enters the second refrigerant heat exchange channel of the first heat exchanger 30 through the fifth input pipe 31, thereby exchanging heat with the compressed air in the second air heat exchange channel, causing the second low-temperature refrigerant to heat up and become the second high-temperature refrigerant, and the compressed air to undergo its first cooling.

[0075] The second high-temperature refrigerant in the second refrigerant heat exchange channel of the first heat exchanger 30 enters the second hot tank 10d for storage through the fifth output pipe 32. The compressed air, after its first cooling, enters the first air heat exchange channel of the common heat exchanger 20 through the third input pipe 25. Simultaneously, the first low-temperature refrigerant in the first cold tank 10a enters the first refrigerant heat exchange channel of the common heat exchanger 20 through the first input pipe 21, thereby exchanging heat with the compressed air in the first air heat exchange channel of the common heat exchanger 20. This causes the first low-temperature refrigerant in the first refrigerant heat exchange channel of the common heat exchanger 20 to heat up and become the first high-temperature refrigerant, and the compressed air in the first air heat exchange channel of the common heat exchanger 20 undergoes a second cooling. The first high-temperature refrigerant in the first refrigerant heat exchange channel of the common heat exchanger 20 enters the first hot tank 10b for storage through the first output pipe 24, and the compressed air, after its second cooling, enters the gas storage device 300 for storage through the third output pipe 27. Furthermore, the compressed air, after being cooled a second time, undergoes a third cooling process when passing through the third heat exchanger 50 on the third output pipeline 27.

[0076] The following is combined Figure 2 The expansion power generation process in the embodiment shown in the attached figure will be described as follows:

[0077] First, the first control valve A1 controls the first input line 21 to shut off, the second control valve A4 controls the first output line 24 to shut off, the third control valve A2 controls the second input line 22 to open, the fourth control valve A3 controls the second output line 23 to open, the fifth control valve A5 controls the third input line 25 to shut off, the sixth control valve A7 controls the third output line 27 to shut off, the seventh control valve A6 controls the fourth input line 26 to open, the eighth control valve A8 controls the fourth output line 28 to open, the ninth control valve A11 controls the fifth input line 31 to shut off, the tenth control valve A9 controls the fifth output line 32 to shut off, the eleventh control valve A10 controls the first input line 41 to open, and the twelfth control valve A12 controls the sixth output line 42 to open, thereby putting the staggered-time shared heat exchanger system into the second state.

[0078] Then, the first high-temperature refrigerant in the first hot tank 10b enters the first refrigerant heat exchange channel of the common heat exchanger 20 through the second inlet pipe 22. Simultaneously, compressed air released from the gas storage device 300 enters the first air heat exchange channel of the common heat exchanger 20 through the fourth inlet pipe 26. The first high-temperature refrigerant in the first refrigerant heat exchange channel of the common heat exchanger 20 exchanges heat with the compressed air in the first air heat exchange channel, causing the first high-temperature refrigerant to cool down and become the first low-temperature refrigerant, while the compressed air undergoes its first temperature rise. The first low-temperature refrigerant in the first refrigerant heat exchange channel of the common heat exchanger 20 enters the first cold tank 10a through the second outlet pipe 23.

[0079] After the initial heating, the compressed air enters the third air heat exchange channel of the second heat exchanger 40 through the fourth output pipe 28. Simultaneously, the second high-temperature refrigerant in the second hot tank 10d enters the third refrigerant heat exchange channel of the second heat exchanger 40 through the sixth input pipe 41, exchanging heat with the compressed air in the third air heat exchange channel of the second heat exchanger 40. This causes the second high-temperature refrigerant to cool down and become the second low-temperature refrigerant, resulting in a second heating of the compressed air. The second low-temperature refrigerant in the third refrigerant heat exchange channel of the second heat exchanger 40 enters the second cold tank 10c through the sixth output pipe 42. The compressed air, after its second heating, drives the turbine generator 200 to generate electricity.

[0080] It should be noted that the connection methods of the various heat exchangers are not limited to this. For details, please refer to the second embodiment of this invention. Figure 3 and Figure 4 As shown, the staggered-time shared heat exchanger system also includes a second cold tank 10c, a second hot tank 10d, and a first heat exchanger 30. The second cold tank 10c is used to store a second low-temperature refrigerant, and the second hot tank 10d is used to store a second high-temperature refrigerant. The first heat exchanger 30 has a second refrigerant heat exchange channel and a second air heat exchange channel for heat exchange between them. The inlet g1 of the second refrigerant heat exchange channel of the first heat exchanger 30 is connected to the outlet c1 of the second cold tank 10c through a fifth input pipe 31, and the outlet g2 of the second refrigerant heat exchange channel of the first heat exchanger 30 is connected to the inlet d2 of the second hot tank 10d through a fifth output pipe 32, so that during air compression, the second low-temperature refrigerant in the second cold tank 10c can enter the second refrigerant heat exchange channel of the first heat exchanger 30 through the fifth input pipe 31.

[0081] The third output pipe 27 connects the inlet h1 of the second air heat exchange channel of the first heat exchanger 30 and the outlet f2 of the first air heat exchange channel of the shared heat exchanger 20. The outlet h2 of the second air heat exchange channel of the first heat exchanger 30 is connected to the gas storage device 300 through the first connecting pipe 29, so that during the air compression process, after the compressed air undergoes a first cooling in the first air heat exchange channel, it can enter the second air heat exchange channel of the first heat exchanger 30 through the third output pipe 27. At this time, the compressed air in the second air heat exchange channel of the first heat exchanger 30 exchanges heat with the second low-temperature refrigerant in the second refrigerant heat exchange channel, causing the second low-temperature refrigerant to heat up and become the second high-temperature refrigerant, which then enters the second heat tank 10d through the fifth output pipe 32. Simultaneously, the compressed air in the second air heat exchange channel undergoes a second cooling, and after the second cooling, the compressed air can enter the gas storage device 300 for storage through the first connecting pipe 29.

[0082] Furthermore, when the staggered shared heat exchanger system is in the first state (see...) Figure 3When the fifth input pipe 31 and the fifth output pipe 32 are both open, the second low-temperature refrigerant in the second cold tank 10c can enter the second refrigerant heat exchange channel of the first heat exchanger 30 through the fifth input pipe 31 for heat exchange and temperature rise. The second high-temperature refrigerant formed by heat exchange and temperature rise can enter the second hot tank 10d for storage through the fifth output pipe 32. At the same time, the sixth input pipe 41 and the sixth output pipe 42 are both closed, so that the second heat exchanger 40 is in a non-operating state.

[0083] Optionally, a ninth control valve A11 is installed on the fifth input line 31, which is used to control the opening or closing of the fifth input line 31. A tenth control valve A9 is installed on the fifth output line 32, which is used to control the opening or closing of the fifth output line 32.

[0084] Furthermore, a third pump 310 is installed on the fifth input line 31, which is used to provide the driving force for the second cryogenic refrigerant in the second cold tank 10c to flow through the fifth input line 31 to the first heat exchanger 30.

[0085] Furthermore, the staggered shared heat exchanger system also includes a third heat exchanger 50, which is installed on the aforementioned first connecting pipe 29 and is used to cool the compressed air flowing through the first connecting pipe 29. Thus, during air compression, the compressed air generated by the air compressor 100 undergoes three stages of cooling—through the shared heat exchanger 20, the first heat exchanger 30, and the third heat exchanger 50—resulting in compressed air with a temperature reduced to meet design requirements.

[0086] Furthermore, the heat exchanger system also includes a second heat exchanger 40, which has a third refrigerant heat exchange channel and a third air heat exchange channel for heat exchange with each other. The inlet i1 of the third refrigerant heat exchange channel of the second heat exchanger 40 is connected to the outlet d1 of the second hot tank 10d through a sixth input pipe 41, and the outlet i2 of the third refrigerant heat exchange channel of the second heat exchanger 40 is connected to the inlet c2 of the second cold tank 10c through a sixth output pipe 42, so that the second high-temperature refrigerant in the second hot tank 10d can enter the third refrigerant heat exchange channel of the second heat exchanger 40 through the sixth input pipe 41 during the expansion power generation process.

[0087] The inlet j1 of the third air heat exchange channel of the second heat exchanger 40 is connected to the gas storage device 300 via the second connecting pipe 44. The fourth input pipe 26 connects the outlet j2 of the third air heat exchange channel of the second heat exchanger 40 to the inlet f1 of the first air heat exchange channel of the shared heat exchanger 20, thereby allowing the compressed air released by the gas storage device 300 during the expansion power generation process to enter the third air heat exchange channel of the second heat exchanger 40 through the second connecting pipe 44. At this time, the second high-temperature refrigerant in the third refrigerant heat exchange channel of the second heat exchanger 40 exchanges heat with the compressed air in the third air heat exchange channel, causing the second high-temperature refrigerant to cool down and become the second low-temperature refrigerant, which then enters the second cold tank 10c through the sixth output pipe 42. Meanwhile, the compressed air in the third air heat exchange channel of the second heat exchanger 40 absorbs heat and is heated for the first time. After the first heating, the compressed air enters the first air heat exchange channel of the common heat exchanger 20 through the fourth input pipe 26, and is heated for the second time in the first air heat exchange channel of the common heat exchanger 20.

[0088] Furthermore, when the staggered shared heat exchanger system is in the first state (see...) Figure 3 When the sixth input pipe 41 and the sixth output pipe 42 are both cut off, the second heat exchanger 40 is in a non-operating state. When the shared heat exchanger system is in the second state (see...), Figure 4 When the sixth input pipe 41 and the sixth output pipe 42 are connected, the second high-temperature refrigerant in the second hot tank 10d can enter the third refrigerant heat exchange channel of the second heat exchanger 40 through the sixth input pipe 41 for heat exchange and cooling. The second low-temperature refrigerant formed after heat exchange and cooling can enter the second cold tank 10c through the sixth output pipe 42. Optionally, an eleventh control valve A10 is installed on the sixth input pipe 41, which is used to control the opening or closing of the sixth input pipe 41. A twelfth control valve A12 is installed on the sixth output pipe 42, which is used to control the opening or closing of the sixth output pipe 42.

[0089] Furthermore, a fourth pump 411 is installed on the sixth input line 41, which is used to provide the driving force for the second high-temperature refrigerant in the second hot tank 10d to flow through the sixth input line 41 to the second heat exchanger 40.

[0090] In one specific embodiment, the common heat exchanger 20 is a high-temperature medium heat exchanger. For example, the first low-temperature refrigerant and the first high-temperature refrigerant can be heat transfer oil or molten salt, that is, the common heat exchanger 20 is a heat transfer oil-gas heat exchanger or a molten salt-gas heat exchanger.

[0091] The first heat exchanger 30 and the second heat exchanger 40 are medium-temperature medium heat exchangers. For example, the second low-temperature refrigerant and the second high-temperature refrigerant are hot water, that is, the first heat exchanger 30 and the second heat exchanger 40 are both hot water-gas heat exchangers.

[0092] The third heat exchanger 50 is a low-temperature medium heat exchanger, for example, the third heat exchanger 50 is a circulating water cooler.

[0093] The following is combined Figure 3 The air compression process in the second embodiment will be described as follows:

[0094] First, the first control valve A1 controls the first input line 21 to open, the second control valve A4 controls the first output line 24 to open, the third control valve A2 controls the second input line 22 to close, the fourth control valve A3 controls the second output line 23 to close, the fifth control valve A5 controls the third input line 25 to open, the sixth control valve A7 controls the third output line 27 to open, the seventh control valve A6 controls the fourth input line 26 to close, the eighth control valve A8 controls the fourth output line 28 to close, the ninth control valve A11 controls the fifth input line 31 to open, the tenth control valve A9 controls the fifth output line 32 to open, the eleventh control valve A10 controls the sixth input line 41 to close, and the twelfth control valve A12 controls the sixth output line 42 to close, thereby putting the staggered-time shared heat exchanger system into the first state.

[0095] Then, the air compressor 100 compresses the taken-in air, and the compressed air enters the first air heat exchange channel of the common heat exchanger 20 through the third input pipe 25. At the same time, the first low-temperature refrigerant in the first cold tank 10a enters the first refrigerant heat exchange channel of the common heat exchanger 20 through the first input pipe 21, thereby exchanging heat with the compressed air in the first air heat exchange channel of the common heat exchanger 20, causing the first low-temperature refrigerant to heat up and become the first high-temperature refrigerant, and the compressed air to undergo its first cooling.

[0096] The first high-temperature refrigerant in the first refrigerant heat exchange channel of the shared heat exchanger 20 enters the first hot tank 10b for storage through the first output pipe 24. After the first cooling, the compressed air enters the second air heat exchange channel of the first heat exchanger 30 through the third output pipe 27. Simultaneously, the second low-temperature refrigerant in the second cold tank 10c enters the second refrigerant heat exchange channel of the first heat exchanger 30 through the fifth input pipe 31, thereby exchanging heat with the compressed air in the second air heat exchange channel of the first heat exchanger 30. This causes the second low-temperature refrigerant in the second refrigerant heat exchange channel of the first heat exchanger 30 to heat up and become the second high-temperature refrigerant, while the compressed air in the second air heat exchange channel of the first heat exchanger 30 undergoes a second cooling. The second high-temperature refrigerant in the second refrigerant heat exchange channel of the first heat exchanger 30 enters the second hot tank 10d for storage through the fifth output pipe 32, and the compressed air, after the second cooling, enters the gas storage device 300 for storage through the first connecting pipe 29. Furthermore, the compressed air, after being cooled a second time, undergoes a third cooling process when passing through the third heat exchanger 50 on the first connecting pipe 29.

[0097] The following is combined Figure 4 The expansion power generation process in the second embodiment will be described as follows:

[0098] First, the first control valve A1 controls the first input line 21 to shut off, the second control valve A4 controls the first output line 24 to shut off, the third control valve A2 controls the second input line 22 to open, the fourth control valve A3 controls the second output line 23 to open, the fifth control valve A5 controls the third input line 25 to shut off, the sixth control valve A7 controls the third output line 27 to shut off, the seventh control valve A6 controls the fourth input line 26 to open, the eighth control valve A8 controls the fourth output line 28 to open, the ninth control valve A11 controls the fifth input line 31 to shut off, the tenth control valve A9 controls the fifth output line 32 to shut off, the eleventh control valve A10 controls the sixth input line 41 to open, and the twelfth control valve A12 controls the sixth output line 42 to open, thereby putting the staggered-time shared heat exchanger system into the second state.

[0099] Then, the second high-temperature refrigerant in the second hot tank 10d enters the third refrigerant heat exchange channel of the second heat exchanger 40 through the sixth inlet pipe 41. Simultaneously, the compressed air released from the gas storage device 300 enters the third air heat exchange channel of the second heat exchanger 40 through the second connecting pipe 44. The second high-temperature refrigerant in the third refrigerant heat exchange channel of the second heat exchanger 40 exchanges heat with the compressed air in the third air heat exchange channel, causing the second high-temperature refrigerant to cool down and become the second low-temperature refrigerant, while the compressed air undergoes its first temperature rise. The second low-temperature refrigerant in the third refrigerant heat exchange channel of the second heat exchanger 40 enters the second cold tank 10c through the sixth outlet pipe 42.

[0100] After the compressed air undergoes its first heating, it enters the first air heat exchange channel of the common heat exchanger 20 through the fourth input pipe 26. Simultaneously, the first high-temperature refrigerant in the first hot tank 10b enters the first refrigerant heat exchange channel of the common heat exchanger 20 through the second input pipe 22, exchanging heat with the compressed air in the first air heat exchange channel. This causes the first high-temperature refrigerant to cool down and become a first low-temperature refrigerant, resulting in a second heating of the compressed air. The first low-temperature refrigerant in the first refrigerant heat exchange channel of the common heat exchanger 20 enters the second cold tank 10a through the second output pipe 23. After this second heating, the compressed air flows to the turbine generator 200 through the fourth output pipe 28, thereby driving the turbine generator 200 to generate electricity.

[0101] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A heat exchanger system for staggered use, characterized in that, include: The first cold tank (10a) is used to store the first low-temperature refrigerant; The first hot tank (10b) is used to store the first high-temperature refrigerant; A shared heat exchanger (20) has a first refrigerant heat exchange channel and a first air heat exchange channel for heat exchange with each other; the inlet (e1) of the first refrigerant heat exchange channel is optionally connected to the outlet (a1) of the first cold tank (10a) or the outlet (b1) of the first hot tank (10b); the outlet (e2) of the first refrigerant heat exchange channel is optionally connected to the inlet (b2) of the first hot tank (10b) or the inlet (a2) of the first cold tank (10a); the inlet (f1) of the first air heat exchange channel is optionally connected to an air compressor (100) or an air storage device (300), and the outlet (f2) of the first air heat exchange channel is optionally connected to the air storage device (300) or a turbine generator (200); The heat exchanger system is capable of switching between a first state and a second state. When the heat exchanger system is in the first state, the inlet (e1) of the first refrigerant heat exchange channel is connected to the outlet (a1) of the first cold tank (10a), the outlet (e2) of the first refrigerant heat exchange channel is connected to the inlet (b2) of the first hot tank (10b), the inlet (f1) of the first air heat exchange channel is connected to the air compressor (100), and the outlet (f2) of the first air heat exchange channel is connected to... The gas storage device (300) is connected; when the heat exchanger system is in the second state, the inlet (e1) of the first refrigerant heat exchange channel is connected to the outlet (b1) of the first hot tank (10b), the outlet (e2) of the first refrigerant heat exchange channel is connected to the inlet (a2) of the first cold tank (10a), the inlet (f1) of the first air heat exchange channel is connected to the gas storage device (300), and the outlet (f2) of the first air heat exchange channel is connected to the turbine generator (200); A first input pipe (21) is connected between the inlet (e1) of the first refrigerant heat exchange channel and the outlet (a1) of the first cold tank (10a), and a second input pipe (22) is connected between the outlet (e2) of the first refrigerant heat exchange channel and the outlet (b1) of the first hot tank (10b); a first output pipe (24) is connected between the outlet (e2) of the first refrigerant heat exchange channel and the inlet (b2) of the first hot tank (10b), and a second output pipe (23) is connected between the outlet (e2) of the first refrigerant heat exchange channel and the inlet (b2) of the first hot tank (10b); a third input pipe (25) is connected between the inlet (f1) of the first air heat exchange channel and the air compressor (100), and a fourth input pipe (26) is connected between the air storage device (300); a third output pipe (27) is connected between the outlet (f2) of the first air heat exchange channel and the air storage device (300), and a fourth output pipe (28) is connected between the outlet (f2) of the first air heat exchange channel and the air storage device (300). When the heat exchanger system is in the first state, the first input pipe (21) and the first output pipe (24) are both open, the second input pipe (22) and the second output pipe (23) are both closed, the third input pipe (25) and the third output pipe (27) are both open, and the fourth input pipe (26) and the fourth output pipe (28) are both closed; when the heat exchanger system is in the second state, the first input pipe (21) and the first output pipe (24) are both closed, the second input pipe (22) and the second output pipe (23) are both open, the third input pipe (25) and the third output pipe (27) are both closed, and the fourth input pipe (26) and the fourth output pipe (28) are both open. The heat exchanger system also includes a second cold tank (10c), a second hot tank (10d), and a first heat exchanger (30). The second cold tank (10c) is used to store a second low-temperature refrigerant, and the second hot tank (10d) is used to store a second high-temperature refrigerant. The first heat exchanger (30) has a second refrigerant heat exchange channel and a second air heat exchange channel for heat exchange with each other. The inlet (g1) of the second refrigerant heat exchange channel is connected to the outlet (c1) of the second cold tank (10c) through a fifth input pipe (31), and the outlet (g2) of the second refrigerant heat exchange channel is connected to the inlet (d2) of the second hot tank (10d) through a fifth output pipe (32). The inlet (h1) of the second air heat exchange channel is connected to the air compressor (100), and the third input pipe (25) is connected between the outlet (h2) of the second air heat exchange channel and the inlet (f1) of the first air heat exchange channel; The heat exchanger system further includes a second heat exchanger (40), which has a third refrigerant heat exchange channel and a third air heat exchange channel that exchange heat with each other. The inlet (i1) of the third refrigerant heat exchange channel is connected to the outlet (d1) of the second hot tank (10d) through the sixth input pipe (41), and the outlet (i2) of the third refrigerant heat exchange channel is connected to the inlet (c2) of the second cold tank (10c) through the sixth output pipe (42). The fourth output pipe (28) is connected between the inlet (j1) of the third air heat exchange channel and the outlet (f2) of the first air heat exchange channel, and the outlet (j2) of the third air heat exchange channel is connected to the turbine generator (200). The heat exchanger system also includes a third heat exchanger (50), which is installed on the third output line (27) for cooling the compressed air flowing through the third output line (27).

2. The staggered-time shared heat exchanger system according to claim 1, characterized in that, A first control valve (A1) is installed on the first input pipeline (21), and the first control valve (A1) is used to control the first input pipeline (21) to be open or closed; a second control valve (A4) is installed on the first output pipeline (24), and the second control valve (A4) is used to control the first output pipeline (24) to be open or closed; A third control valve (A2) is installed on the second input pipeline (22), and the third control valve (A2) is used to control the second input pipeline (22) to open or close; a fourth control valve (A3) is installed on the second output pipeline (23), and the fourth control valve (A3) is used to control the second output pipeline (23) to open or close; A fifth control valve (A5) is installed on the third input pipeline (25), and the fifth control valve (A5) is used to control the opening or closing of the third input pipeline (25); a sixth control valve (A7) is installed on the third output pipeline (27), and the sixth control valve (A7) is used to control the opening or closing of the third output pipeline (27). A seventh control valve (A6) is installed on the fourth input pipeline (26), and the seventh control valve (A6) is used to control the fourth input pipeline (26) to open or close; an eighth control valve (A8) is installed on the fourth output pipeline (28), and the eighth control valve (A8) is used to control the fourth output pipeline (28) to open or close.

3. A compressed air energy storage power station, characterized in that, It includes an air compressor (100), a turbine generator (200), and a time-sharing heat exchanger system as described in any one of claims 1 or 2.

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