Compressed air energy storage device

Abstract

The utility model discloses a compressed air energy storage device which comprises a heat conduction pipe, a sewer pipe, a first radiator, a second radiator, a third radiator and an upper water pipe which are communicated in sequence. The top end and the bottom end of the heat conduction pipe are respectively communicated with the water discharging pipe and the water feeding pipe; the first radiator is provided with a first inner circulating pipe, the second radiator is provided with a second inner circulating pipe, and the third radiator is provided with a third inner circulating pipe; cooling liquid in the heat conduction pipe sequentially passes through the first inner circulation pipe, the second inner circulation pipe and the third inner circulation pipe to be subjected to circulation heat dissipation, and the cooling liquid subjected to heat dissipation flows back to the heat conduction pipe through the water feeding pipe. The system further comprises a heat storage device and three heat exchangers connected with the heat storage device. The first radiator, the second radiator and the third radiator are fixedly connected with heat exchangers respectively; the heat exchanger absorbs heat in the first radiator, the second radiator and the third radiator into the heat storage device. Therefore, heat generated by compressed air is recycled.

Description

Technical Field

[0001] The utility model relates to the field of electric energy storage, in particular to a compressed air energy storage device. Background Technique

[0002] Energy storage technology plays an important role in the energy field. Compressed air energy storage is a potential energy storage method. It compresses and stores air and releases energy when needed. It has the advantages of large capacity, long life and environmental protection, and can play an important role in power grid peak shaving and distributed energy fields, providing a new way for the efficient utilization of energy.

[0003] Compressed air energy storage is a new energy storage technology. It compresses air and stores it in a specific container, and releases the compressed air to drive a generator to generate electricity when needed. This technology has a large energy storage scale, stable and reliable operation, can effectively adjust the balance between power supply and demand, provide strong support for building a stable and efficient energy system, and promote the green and sustainable development of the energy industry.

[0004] A compressed air energy storage device is used to store compressed air. It stores energy inside the device when the power is sufficient, and generates electricity through compressed air during the peak electricity consumption period, improving the efficient utilization of energy. However, in actual use, a large amount of hot gas is generated during the process of compressing air in the compressed air energy storage device. Most of the current devices directly dissipate the heat into the air, resulting in energy waste. Therefore, a compressed air energy storage device is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a compressed air energy storage device, aiming to improve the problem that the heat generated by compressing gas in the existing technology is directly discharged without further recycling.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A compressed air energy storage device includes a heat conduction pipe, a water pipe, a first radiator, a second radiator, a third radiator and an upper water pipe that are connected in sequence;

[0008] The heat conduction pipe is wound around the outer wall of the gas tank, and the top and bottom ends of the heat conduction pipe are respectively connected to the water pipe and the upper water pipe;

[0009] The first radiator is provided with a first internal circulation pipe, the second radiator is provided with a second internal circulation pipe, and the third radiator is provided with a third internal circulation pipe;

[0010] The coolant in the heat conduction tube sequentially passes through the first internal circulation tube, the second internal circulation tube, and the third internal circulation tube, enabling the coolant to circulate and dissipate heat inside the corresponding first radiator, second radiator, and third radiator respectively. After heat dissipation, the coolant flows back to the heat conduction tube through the upper water pipe connected to the bottom end of the third radiator;

[0011] It further includes a heat storage device and three heat exchangers connected to the heat storage device;

[0012] Heat exchangers are respectively fixedly connected to the left sides of the first radiator, the second radiator, and the third radiator; the heat exchangers respectively absorb the heat in the first radiator, the second radiator, and the third radiator into the heat storage device;

[0013] The air tank is provided with a filtering mechanism for filtering the compressed air entering the air tank.

[0014] Furthermore, it further includes a first external circulation tube and a second external circulation tube;

[0015] One end of the first external circulation tube is connected to the bottom of the front side of the first radiator, and the other end of the first external circulation tube is connected to the second radiator; one end of the second external circulation tube is connected to the bottom of the front side of the second radiator, and the other end of the second external circulation tube is connected to the third radiator.

[0016] Furthermore, the filtering mechanism includes a vibration motor, a connecting rod, a vibration ring, an air pipe opening, and a cloth bag;

[0017] The air pipe opening is in a cylindrical shape as a whole and is arranged on the top surface of the air tank, and the connecting rod is rotationally supported by the air pipe opening;

[0018] The vibration motor is fixedly connected to the top surface of the air tank, the output end of the vibration motor is fixedly connected to the connecting rod, one end of the connecting rod is fixedly connected with a vibration ring, the top of the air tank is connected with an air pipe opening, a cloth bag is installed inside the air pipe opening, filter holes are formed inside the cloth bag, and the vibration ring is fixedly sleeved on the bottom end of the cloth bag.

[0019] Furthermore, a connecting piece is fixedly connected to the right side of the air tank, a pressure gauge is fixedly connected to the top of the connecting piece, and a pressure relief port is formed on the right side of the connecting piece.

[0020] Furthermore, the connecting piece is a three-way pipe fitting.

[0021] In the above technical solution, the present utility model has the following beneficial effects:

[0022] In the present utility model, when the air energy storage device is in use, during the process of compressing air, the coolant in the circulation pipe absorbs the heat in the air tank. The coolant reaches the first radiator through the circulating down pipe, and after circulating in the first radiator, it flows to the second radiator and finally to the third radiator. The heat exchanger absorbs the heat in the radiator into the heat storage device, thereby recycling the heat generated by the compressed air. The advantage of connecting the first radiator, the second radiator, and the third radiator in series in sequence is that different heat storage media can be used, and the effect produced by connecting the three radiators is much better than that of a single radiator alone. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0024] Figure 1 Stereogram of a compressed air energy storage device proposed by the present utility model;

[0025] Figure 2 Rear view of a compressed air energy storage device proposed by the present utility model;

[0026] Figure 3 Enlarged view of part A of a compressed air energy storage device proposed by the present utility model;

[0027] Figure 4 Cross-sectional view of a compressed air energy storage device proposed by the present utility model;

[0028] Figure 5 Rear view of a compressed air energy storage device proposed by the present utility model.

[0029] Reference Signs:

[0030] 1. Air tank; 2. Heat conduction pipe; 3. Down pipe; 4. Up pipe; 5. First radiator; 6. Heat exchanger; 71. First inner circulation pipe; 72. Second inner circulation pipe; 73. Third inner circulation pipe; 8. First outer circulation pipe; 9. Second radiator; 10. Third radiator; 11. Connecting pipe; 12. Heat storage device; 13. Filter mechanism; 1301. Vibration motor; 1302. Connecting rod; 1303. Vibration ring; 1304. Air pipe port; 1305. Cloth bag; 1306. Filter hole; 14. Maintenance door; 15. Valve; 16. Control instrument; 17. Alarm lamp; 18. Connector; 19. Pressure gauge; 20. Pressure relief port; 21. Second outer circulation pipe. Detailed Embodiment

[0031] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] It should be noted that the orientation or positional relationship indicated by the terms "above", "one end", "upper", etc. used herein is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description. Similar expressions are only for the purpose of illustration, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; in addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] As Figures 1-5 shown, a compressed air energy storage device includes a heat conduction pipe 2, a down water pipe 3, a first radiator 5, a second radiator 9, a third radiator 10, and an up water pipe 4 that are connected in sequence.

[0034] The heat conduction pipe 2 is wound around the outer wall of the gas tank 1. The top and bottom ends of the heat conduction pipe 2 are respectively connected to the down water pipe 3 and the up water pipe 4; the down water pipe 3 is at the top and the up water pipe 4 is at the bottom.

[0035] The first radiator 5 is provided with a first internal circulation pipe 71, the second radiator 9 is provided with a second internal circulation pipe 72, and the third radiator 10 is provided with a third internal circulation pipe 73.

[0036] The coolant in the heat conduction pipe 2 sequentially passes through the first internal circulation pipe 71, the second internal circulation pipe 72, and the third internal circulation pipe 73, so that the coolant circulates and dissipates heat inside the corresponding first radiator 5, second radiator 9, and third radiator 10 respectively. The cooled coolant returns to the heat conduction pipe 2 through the up water pipe 4 connected to the bottom end of the third radiator 10.

[0037] It further includes a heat storage device 12 and three heat exchangers 6 connected to the heat storage device 12;

[0038] Heat exchangers 6 are respectively fixedly connected to the left sides of the first radiator 5, the second radiator 9, and the third radiator 10; the heat exchangers 6 absorb the heat in the first radiator 5, the second radiator 9, and the third radiator 10 into the heat storage device 12 respectively.

[0039] The gas tank 1 is provided with a filtering mechanism 13, and the filtering mechanism 13 is used to filter the compressed air in the gas tank 1.

[0040] Preferably, it further includes a first external circulation pipe 8 and a second external circulation pipe 21.

[0041] One end of the first external circulation pipe 8 communicates with the bottom of the front side of the first radiator 5, and the other end of the first external circulation pipe 8 communicates with the second radiator 9; one end of the second external circulation pipe 21 communicates with the bottom of the front side of the second radiator 9, and the other end of the second external circulation pipe 21 communicates with the third radiator 10.

[0042] Specifically, referring to Figure 1 , Figure 3 and Figure 5 , an embodiment provided by the present utility model: a compressed air energy storage device, including an air tank 1, a heat conduction pipe 2 is installed on the outer wall of the air tank 1, the top end of the heat conduction pipe 2 communicates with a water discharge pipe 3, one end of the water discharge pipe 3 is fixedly connected to a first radiator 5, the first radiator 5 is in the primary heat exchange stage, and the coolant circulates and dissipates heat inside it through the first internal circulation pipe 71. The front side of the first radiator 5 communicates with the first internal circulation pipe 71, and the bottom of the first radiator 5 communicates with a first external circulation pipe 8. One end of the first external circulation pipe 8 communicates with a second radiator 9, and the front bottom of the second radiator 9 communicates with a second external circulation pipe 21. Heat exchangers 6 are fixedly connected to the left sides of the first radiator 5, the second radiator 9 and the third radiator 10. The heat exchangers 6 are used to transfer the heat in the radiators to the heat storage device 12. The first radiator 5, the second radiator 9 and the third radiator 10 are connected by the first external circulation pipe 8 and the second external circulation pipe 21. The bottom end of the third radiator 10 communicates with a water supply pipe 4, and the other end of the water supply pipe 4 is connected to the heat conduction pipe 2, so that the heat in the heat conduction pipe 2 can be transferred when the coolant flows from the water discharge pipe 3 to the first, second and third radiators. The bottom of each heat exchanger 6 communicates with a connecting pipe 11, and the rear side of the connecting pipe 11 is fixedly connected to a heat storage device 12. Each connecting pipe 11 serves to connect the heat exchanger and the heat storage device 12. A filtering mechanism 13 is provided at the top of the air tank 1, and the filtering mechanism 13 is used to filter the compressed air in the air tank 1.

[0043] Specifically, when the air energy storage device is in use, during the stage of compressing air, the heat conduction pipe 2 plays an important role, and the coolant therein can effectively absorb the heat generated by the compressed air in the air tank 1. Subsequently, the coolant in the heat conduction pipe 2 circulates and flows into the down water pipe 3, and then the coolant reaches the first radiator 5 along the down water pipe 3. The first radiator 5 is the primary heat exchange stage, and the coolant circulates and dissipates heat inside it through the first internal circulation pipe 71, so that the temperature of the coolant can be preliminarily reduced. The first radiator 5 has a strong heat dissipation capacity and can transfer most of the heat to the heat exchanger 6. After the first radiator 5 completes the circulating heat dissipation, the coolant will enter the second radiator 9. The second radiator 9 is an intermediate heat exchanger, and there is a second internal circulation pipe 72 inside the second radiator 9. The second radiator 9 uses the phase change material paraffin, and the coolant can work together with the paraffin to ensure the smooth progress of the phase change process and further reduce the temperature of the compressed air. After circulating and dissipating heat in the second radiator 9, the coolant comes to the third radiator 10. There is a third internal circulation pipe 73 inside the third radiator 10. The third radiator 10 is a high-level heat exchanger and uses high-temperature heat storage media such as molten salt. The coolant can exchange heat with the molten salt. Through the synergistic effect of these three radiators, the coolant can be thoroughly dissipated. After passing through the third radiator 10, the coolant flows into the heat conduction pipe 2 through the upper water pipe 4, so as to circulate. During the cooling cycle process of the first, second, and third internal circulation pipes with the same path length, the effect produced by the connection of the three radiators is much better than that of a single radiator. The heat exchanger 6 can absorb the heat in the radiator into the heat storage device 12, so as to realize the recycling of the heat generated by the compressed air. Such a design not only improves the energy utilization efficiency but also reduces energy waste, providing a strong guarantee for the sustainable operation of the air energy storage device.

[0044] Preferably, the filtering mechanism 13 includes a vibration motor 1301, a connecting rod 1302, a vibration ring 1303, an air pipe opening 1304, and a cloth bag 1305.

[0045] The air pipe opening 1304 is integrally cylindrical and its top surface is provided with a cylinder cover that can open the air pipe opening 1304. The air pipe opening 1304 is arranged on the top surface of the air tank 1, protruding from the top surface of the air tank 1, and the connecting rod 1302 is rotationally supported by the air pipe opening 1304.

[0046] The vibration motor 1301 is fixedly connected to the top surface of the air tank 1. The output end of the vibration motor 1301 is fixedly connected to the connecting rod 1302. One end of the connecting rod 1302 is fixedly connected with a vibration ring 1303. The top of the air tank 1 is communicated with an air pipe opening 1304. A cloth bag 1305 is installed inside the air pipe opening 1304. Filter holes 1306 are formed inside the cloth bag 1305, and the vibration ring 1303 is sleeved on the bottom of the cloth bag 1305.

[0047] When compressed air is introduced into the air tank, the cloth bag will filter the gas. The filter holes allow air to pass through, and dust with a larger radius will be intercepted. When it is necessary to clean the cloth bag, open the air pipe opening and start the vibration motor. The vibration motor will drive the vibration ring to vibrate, the dust will loosen, and at the same time, the compressed air will flow outwards, and the dust will be cleaned outside the air tank.

[0048] Refer to Figure 1 、 Figure 2 and Figure 4 As shown in

[0049] Specifically, when compressed air is introduced into the air tank 1, the cloth bag 1305 begins to play its important filtering role. The existence of the filter holes 1306 enables air to pass through the filter holes 1306 smoothly, while dust with a larger radius will be intercepted. After the cloth bag 1305 has been working for a period of time, such as Figure 4The shown shadow is the accumulated dust. The already accumulated dust will also block the subsequent dust. As time goes by, when the dust accumulates to a certain extent, the filtering capacity of the cloth bag 1305 will reach its peak. At this time, if the filtering continues, due to the excessive dust in the cloth bag 1305, its filtering effect will be greatly reduced. Therefore, when it is necessary to clean the cloth bag 1305, first open the air pipe opening 1304. When the air pipe opening 1304 is opened, a pressure difference is formed between the air tank and the external environment. When the pressure in the air tank is higher than the external environment pressure, the compressed air will naturally flow from the high-pressure area to the low-pressure area, that is, flow out from the inside of the air tank. Then start the vibration motor 1301. After the vibration motor 1301 is started, its output end will drive the connecting rod 1302 to move. The connecting rod 1302 will drive the vibration ring 1303 under the cloth bag 1305 to vibrate. Under the action of vibration, the dust will gradually loosen. At the same time, a pressure difference is formed between the air tank 1 and the external environment. When the pressure in the air tank 1 is higher than the external environment pressure, the compressed air will naturally flow from the high-pressure area to the low-pressure area, that is, flow out from the inside of the air tank 1. With the help of the force of this air flow, the dust will be cleaned to the outside of the air tank 1. In this way, the cloth bag 1305 can restore its good filtering performance and ensure that the compressed air maintains a high cleanliness when entering the air tank 1.

[0050] Refer to Figure 2 , a maintenance door 14 is rotatably connected to the rear side of the heat storage device 12, and a valve 15 is fixedly connected to the rear side of the maintenance door 14. A control instrument 16 is fixedly connected to the front side of the heat storage device 12. The surface of the control instrument 16 is treated smoothly. An alarm lamp 17 is fixedly connected to the right side of the control instrument 16, and the alarm lamp 17 is electrically connected to the heat storage device 12. Specifically, the maintenance door 14 facilitates the staff to enter and check when the heat storage device 12 has problems. At the same time, the presence of the valve 15 enables the maintenance door 14 to be easily opened. The control instrument 16 enables the heat storage device 12 to be controlled. The electrical connection between the alarm lamp 17 and the heat storage device 12 enables the heat storage device 12 to give an alarm in time when a fault occurs.

[0051] Working principle: When the air energy storage device is in use, during the process of compressing air, the coolant in the heat conduction tube 2 absorbs the heat generated by the compressed air in the air tank 1. The coolant in the heat conduction tube 2 circulates into the down pipe 3 and reaches the first radiator 5 through the down pipe 3. In the first radiator 5, it circulates and dissipates heat inside through the first internal circulation pipe 71. The first radiator 5 can transfer most of the heat to the heat exchanger 6. After the circulation in the first radiator 5 is completed, the coolant enters the second radiator 9. After the circulation in the second radiator 9 is completed, it finally reaches the third radiator 10. Through the three radiators, the coolant can be thoroughly cooled. During the cooling cycle with the same path length, by connecting the three radiators, the effect is much better than that of a single radiator. The heat exchanger 6 absorbs the heat in the radiator into the heat storage device 12, so as to recycle the heat generated by the compressed air;

[0052] When the compressed air is introduced into the air tank 1, the cloth bag 1305 will filter the gas. The filter holes 1306 allow air to pass through the filter holes 1306, and dust with a larger radius will be intercepted. After the cloth bag 1305 works for a period of time, the dust also has a blocking effect on the dust. When the dust accumulates to a certain extent, the filtering ability of the cloth bag 1305 reaches the peak. At the same time, when further filtering, there is too much dust in the cloth bag 1305. When it is necessary to clean the cloth bag 1305, open the air pipe port 1304 and start the vibration motor 1301. The output end of the vibration motor 1301 drives the connecting rod 1302, and the connecting rod 1302 will drive the vibration ring 1303 under the cloth bag 1305 to vibrate. The dust will loosen, and at the same time, the compressed air flows outwards, and the dust will be cleaned to the outside of the air tank 1.

[0053] Preferably, a connecting piece 18 is fixedly connected to the right side of the air tank 1. A pressure gauge 19 is fixedly connected to the top of the connecting piece 18. A pressure relief port 20 is opened on the right side of the connecting piece 18. A connecting piece 18 is fixedly connected to the right side of the air tank 1. A pressure gauge 19 is fixedly connected to the top of the connecting piece 18. The pressure gauge 19 is used to measure the pressure inside the air tank 1 and give timely feedback in case of problems. A pressure relief port 20 is opened on the right side of the connecting piece 18.

[0054] Preferably, the connecting piece 18 is a three-way pipe fitting.

[0055] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A compressed air energy storage device, characterized in that It includes a heat conduction pipe (2), a water discharge pipe (3), a first radiator (5), a second radiator (9), a third radiator (10) and a water supply pipe (4) that are connected in sequence; The heat conduction pipe (2) is wound around the outer wall of the gas tank (1), and the top and bottom ends of the heat conduction pipe (2) are respectively connected to the water discharge pipe (3) and the water supply pipe (4); The first radiator (5) is provided with a first internal circulation pipe (71), the second radiator (9) is provided with a second internal circulation pipe (72), and the third radiator (10) is provided with a third internal circulation pipe (73); The coolant in the heat conduction pipe (2) sequentially passes through the first internal circulation pipe (71), the second internal circulation pipe (72), and the third internal circulation pipe (73), so that the coolant circulates and dissipates heat inside the corresponding first radiator (5), second radiator (9), and third radiator (10), and the cooled coolant returns to the heat conduction pipe (2) through the water supply pipe (4) connected to the bottom end of the third radiator (10); It further includes a heat storage device (12) and three heat exchangers (6) connected to the heat storage device (12); Heat exchangers (6) are respectively fixedly connected to the left sides of the first radiator (5), the second radiator (9), and the third radiator (10); the heat exchangers (6) absorb the heat in the first radiator (5), the second radiator (9), and the third radiator (10) into the heat storage device (12) respectively; The gas tank (1) is provided with a filtering mechanism (13), and the filtering mechanism (13) is used to filter the compressed air of the gas tank (1).

2. The compressed air energy storage device according to claim 1, characterized in that, It further includes a first external circulation pipe (8) and a second external circulation pipe (21); One end of the first external circulation pipe (8) is connected to the bottom of the front side of the first radiator (5), and the other end of the first external circulation pipe (8) is connected to the second radiator (9); one end of the second external circulation pipe (21) is connected to the bottom of the front side of the second radiator (9), and the other end of the second external circulation pipe (21) is connected to the third radiator (10).

3. The compressed air energy storage device according to claim 1, characterized in that, The filtering mechanism (13) includes a vibration motor (1301), a connecting rod (1302), a vibration ring (1303), an air pipe port (1304), and a cloth bag (1305); The air pipe port (1304) is integrally cylindrical and is arranged on the top surface of the gas tank (1), and the connecting rod (1302) is rotationally supported by the air pipe port (1304); The vibration motor (1301) is fixedly connected to the top surface of the gas tank (1), the output end of the vibration motor (1301) is fixedly connected to the connecting rod (1302), one end of the connecting rod (1302) is fixedly connected with a vibration ring (1303), the top of the gas tank (1) is connected with an air pipe port (1304), a cloth bag (1305) is installed inside the air pipe port (1304), filter holes (1306) are opened inside the cloth bag (1305), and the vibration ring (1303) is fixedly sleeved on the bottom end of the cloth bag (1305).

4. A compressed air energy storage device according to claim 1, characterized in that, A connecting piece (18) is fixedly connected to the right side of the gas tank (1), a pressure gauge (19) is fixedly connected to the top of the connecting piece (18), and a pressure relief port (20) is formed on the right side of the connecting piece (18).

5. The compressed air energy storage device according to claim 4, wherein The connecting piece (18) is a three-way pipe fitting.

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