Underwater compressed air energy storage system

Abstract

The utility model provides an underwater compressed air energy storage system, which comprises a shell, an air inlet, an air outlet, an energy storage device, an energy storage device, an energy storage device and an energy storage device, and is characterized in that the shell is provided with an air inlet and an air outlet; the air storage tank is arranged at the air output port; the vortex gas collection device is arranged in the shell and is provided with a power receiving end; the drainage transmission device is arranged on the outer side of the shell and connected with the shell; wherein the power output end of the drainage transmission device is in transmission connection with the power receiving end so as to drive the vortex gas collection device to rotate. The underwater compressed air energy storage system solves the technical problems that in the prior art, an underwater compressed air energy storage system depends on external electric power to drive a compressor to compress external air into an underwater air storage tank, and when the system is deployed in a remote area or an area with a complex terrain, the situation that the electric power is not stable, and consequently the compressor cannot operate is prone to occurring.

Description

Technical Field

[0001] This utility model relates to the field of underwater compressed air energy storage technology, and more specifically, to an underwater compressed air energy storage system. Background Technology

[0002] With the acceleration of the global energy transition, the application of renewable energy is growing rapidly. However, renewable energy is characterized by intermittency and volatility. For example, wind power generation depends on wind speed, and photovoltaic power generation depends on sunlight intensity. This results in poor power supply stability, making it difficult to directly meet the power system's demand for a continuous and reliable power supply. As a key technology for balancing energy supply and demand and improving the stability and reliability of the energy system, energy storage systems are becoming increasingly important.

[0003] Underwater compressed air energy storage systems have become a research hotspot due to their unique advantages. By placing the energy storage system underwater, the pressure characteristics of water can be utilized, eliminating the need to build large-scale ground-based gas storage facilities. Furthermore, the relatively stable underwater environment helps to reduce the impact of external factors on the gas storage.

[0004] However, the related technologies have at least two problems: the underwater compressed air energy storage system relies on external power to drive the compressor to compress outside air into the underwater storage tank. When deployed in remote or complex terrain areas, unstable power may occur, causing the compressor to fail to operate. Utility Model Content

[0005] The technical problem solved by this utility model is that underwater compressed air energy storage systems in related technologies rely on external power to drive a compressor to compress outside air into an underwater air storage tank. When deployed in remote or complex terrain areas, unstable power can easily cause the compressor to fail to operate.

[0006] To address the aforementioned problems, this utility model provides an underwater compressed air energy storage system, comprising: a shell with an air inlet and an air outlet, the air inlet being connected to the outside; an air storage tank located at the air outlet; a vortex air collection device located inside the shell and having a power receiving end; and a flow transmission device located on the outside of the shell and connected to the shell; wherein the power output end of the flow transmission device is connected to the power receiving end to drive the vortex air collection device to rotate.

[0007] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: Compared with the use of electric power to drive the compressor in related technologies, this application sets the diversion transmission device as the power source, converts the potential energy of water flow into the rotational kinetic energy of the diversion transmission device, so that the diversion transmission device rotates relative to the shell, and moves synchronously with the vortex gas collection device set in the shell, so as to absorb the outside air into the shell, and then enter the gas storage tank through the air outlet. The water flow drives the vortex gas collection device, reducing the dependence of the energy storage system on external power.

[0008] In one embodiment of this utility model, the flow transmission device includes: a first drive unit disposed on the side of the housing away from the gas storage tank; a second drive unit disposed in the first drive unit and connected to the first drive unit; wherein, the power output end is located in the second drive unit.

[0009] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the first driving unit is used to convert the potential energy of water flow into the kinetic energy to drive the second driving unit, which in turn drives the vortex gas collection device to work.

[0010] In one embodiment of this utility model, the first driving part includes: a connecting shaft connected to the housing; and at least two guiding fan blades disposed on the connecting shaft and spaced apart along the axial direction of the connecting shaft.

[0011] Compared with existing technologies, the technical effects achieved by this solution are as follows: the connecting shaft ensures that the diversion fan blades can rotate stably in the water flow, providing support and a rotation axis for the diversion fan blades; the spaced diversion fan blades increase the contact area with the water flow, enabling them to capture water flow energy more extensively.

[0012] In one embodiment of this utility model, a mounting through hole is provided along the length direction of the connecting shaft; the second driving part includes: a connecting seat, which is disposed in the mounting through hole; and a screw rod, which is disposed on the side of the connecting seat near the housing.

[0013] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the setting of the screw rod ensures that the power can be transmitted from the diversion transmission device to the vortex gas collection device, and can further enhance the conversion of potential energy in the water; and water resources can be introduced into the connecting shaft to cool down the subsequent vortex gas collection device.

[0014] In one embodiment of this utility model, a first hollowed-out part is provided on the side of the connecting shaft away from the housing; the second driving part further includes a second hollowed-out part, which is disposed on the connecting seat; the first hollowed-out part and the second hollowed-out part are arranged alternately to form a filter structure.

[0015] Compared with existing technologies, the technical effect achieved by this technical solution is as follows: By combining the working mode of the screw rod, a first hollow part and a second hollow part are respectively set on the connecting shaft and the connecting seat to form a filter structure, so as to ensure that the water flow can enter the connecting shaft normally and prevent impurities in the water from entering.

[0016] In one embodiment of this utility model, the housing is provided with an installation position on the side near the flow transmission device; the vortex gas collection device includes: a first vortex disk, provided at the installation position; and a second vortex disk, provided on the side of the first vortex disk away from the installation position; wherein, the power receiving end is located on the side of the first vortex disk near the second drive unit.

[0017] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the first vortex disk rotates relative to the second vortex disk, generating suction force on the outside air, so that the outside air enters the shell through the air inlet.

[0018] In one embodiment of this utility model, a guide tube is provided inside the shell; a flow guide port is provided on the side of the first drive unit near the shell; and a clearance port is provided on both the first vortex disk and the second vortex disk corresponding to the guide tube; wherein, the second drive unit drives the water flow to enter the guide tube through the flow guide port.

[0019] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting up guide pipes, flow guides and avoidance ports, the guiding efficiency of water flow is improved, and the first and second vortex disks are cooled by the guide pipes.

[0020] In one embodiment of this utility model, a first scroll plate and a second scroll plate are assembled to form a first diameter; the outer diameter of the guide tube is defined as a second diameter; the second diameter is smaller than the first diameter.

[0021] Compared with the existing technology, the technical effect achieved by adopting this technical solution is that the second diameter being smaller than the first diameter can prevent the first vortex disk from squeezing the guide tube during operation.

[0022] In one embodiment of this utility model, the shell is further provided with a working chamber and an emergency chamber; the vortex gas collection device is located in the working chamber; the emergency chamber is connected to both the working chamber and the gas storage tank.

[0023] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the working chamber stores the air absorbed by the vortex air collection device, and the emergency chamber is set up to prevent excessive pressure in the working chamber.

[0024] In one embodiment of this utility model, it further includes a counterweight, which is disposed on the side of the flow transmission device away from the housing.

[0025] Compared with existing technologies, the technical effects achieved by this solution are as follows: the presence of the counterweight increases the overall weight of the flow transmission device, making its center of gravity lower and more stable, effectively resisting the impact of water flow and torque. Under different water flow conditions, the counterweight enables the flow transmission device to maintain a relatively stable position and angle, reducing the possibility of swaying or displacement.

[0026] By adopting the technical solution of this utility model, the following technical effects can be achieved:

[0027] (1) This application sets the diversion transmission device as the power source, converts the potential energy of the water flow into the rotational kinetic energy of the diversion transmission device, so that the diversion transmission device rotates relative to the shell, so that it moves synchronously with the vortex gas collection device set in the shell, so as to absorb the outside air into the shell, and then enter the gas storage tank through the air outlet. The water flow drives the vortex gas collection device, reducing the dependence of the energy storage system on external power.

[0028] (2) In combination with the working mode of the screw rod, the first hollow part and the second hollow part are respectively set on the connecting shaft and the connecting seat to form a filter structure, so as to ensure that the water flow can enter the connecting shaft normally and prevent the entry of impurities in the water;

[0029] (3) This application improves the guiding efficiency of water flow by setting up a guide pipe, a guide port and an avoidance port, and cools the first vortex plate and the second vortex plate by setting up a guide pipe. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the structure of an underwater compressed air energy storage system provided for an embodiment of this utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the internal structure of the underwater compressed air energy storage system shown in the figure;

[0033] Figure 3 for Figure 2 A schematic diagram showing the fit between the housing and the drainage transmission device;

[0034] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0035] Figure 5for Figure 2 A schematic diagram of the vortex gas collection device shown in the figure;

[0036] Figure 6 for Figure 3 The diagram shows the structure of the second drive unit.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Underwater compressed air energy storage system; 10. Shell; 11. Air inlet; 12. Air outlet; 13. Guide pipe; 15. Air inlet channel; 16. First backstop; 17. Second backstop; 18. Connecting pipeline; 20. Air tank; 21. Working chamber; 22. Emergency chamber; 30. Vortex air collection device; 301. Power receiving end; 31. First vortex disk; 32. Second vortex disk; 33. Clearance opening; 34. First diameter; 40. Flow transmission device; 41. First drive unit; 411. Connecting shaft; 412. Flow fan blade; 413. Mounting through hole; 414. First hollow part; 415. Flow guide port; 42. Second drive unit; 421. Connecting seat; 422. Helical rod; 423. Second hollow part. Detailed Implementation

[0039] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a link, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0042] See Figure 1 , Figure 1 A schematic diagram of an underwater compressed air energy storage system provided for an embodiment of this utility model; combined with Figures 2 to 6Specifically, the underwater compressed air energy storage system 100 includes: a shell 10, an air tank 20, a vortex air collection device 30, and a flow transmission device 40. The shell 10 is provided with an air inlet 11 and an air outlet 12, with the air inlet 11 connected to the outside. The air tank 20 is located at the air outlet 12. The vortex air collection device 30 is located inside the shell 10 and is provided with a power receiving end 301. The flow transmission device 40 is located on the outside of the shell 10 and is connected to the shell 10. The power output end of the flow transmission device 40 is connected to the power receiving end 301 to drive the vortex air collection device 30 to rotate.

[0043] Based on actual usage, the underwater compressed air energy storage system 100 is placed in deep water. Due to the flow characteristics of water, the diversion transmission device 40 will rotate relative to the shell. Therefore, the potential energy of the water flow can be converted into the kinetic energy of the diversion transmission device 40 rotating relative to the shell 10. The vortex air collecting device 30 is connected to the diversion transmission device 40. The diversion transmission device 40 further drives the vortex air collecting device 30 to work, forming an internal and external pressure difference. This allows outside air to enter the shell 10 through the air inlet 11, be compressed, and then enter the air storage tank 20 through the air outlet 12, thereby realizing the compression and collection of outside air.

[0044] For further information, please refer to [link / reference]. Figure 3 The flow transmission device 40 includes: a first drive part 41 and a second drive part 42. The first drive part 41 is located on the side of the housing 10 away from the gas storage tank 20. The second drive part 42 is located in the first drive part 41 and is connected to the first drive part 41. The power output end is located in the second drive part 42.

[0045] Specifically, the first drive unit 41 directly contacts the water to convert the water's potential energy. The first drive unit 41 drives the second drive unit 42 to move, and the second drive unit 42 then drives the vortex gas collection device 30 to collect the gas.

[0046] Furthermore, the first drive unit 41 includes: a connecting shaft 411 and at least two flow guide fan blades 412. The connecting shaft 411 is connected to the housing 10. The flow guide fan blades 412 are disposed on the connecting shaft 411 and are spaced apart along the axial direction of the connecting shaft 411.

[0047] For further information, please refer to [link / reference]. Figure 6 A mounting through hole 413 is provided along the length direction of the connecting shaft 411; the second driving part 42 includes: a connecting seat 421 and a screw rod 422, the connecting seat 421 is provided in the mounting through hole 413; the screw rod 422 is provided on the side of the connecting seat 421 near the housing 10.

[0048] For further information, please refer to [link / reference]. Figure 4The connecting shaft 411 has a first hollow part 414 on the side opposite to the housing 10; the second driving part 42 also includes a second hollow part 423, which is disposed on the connecting seat 421; the first hollow part 414 and the second hollow part 423 are arranged alternately to form a filter structure.

[0049] In a specific example, when the underwater compressed air energy storage system 100 is in a non-operating state, the first hollow part 414 and the second hollow part 423 form a blockage on the connecting shaft 411 to prevent water and debris in the water from entering the connecting shaft 411. When the underwater compressed air energy storage system 100 is in an operating state, the guide fan blade 412 on the connecting shaft 411 will rotate with the water flow. At this time, the second hollow part 423 on the connecting seat 421 is misaligned relative to the first hollow part 414 on the connecting shaft 411, so that the water flow enters the connecting shaft 411 through the mounting through hole 413, further driving the screw rod 422 to rotate.

[0050] For further information, please refer to [link / reference]. Figure 2 and Figure 5 The housing 10 has an installation position on the side near the flow transmission device 40; the vortex gas collection device 30 includes: a first vortex disk 31, which is located at the installation position; and a second vortex disk 32, which is located on the side of the first vortex disk 31 away from the installation position; wherein, the power receiving end 301 is located on the side of the first vortex disk 31 near the second drive unit 42.

[0051] In practical use, when power is transmitted to the first scroll plate 31, the first scroll plate 31 moves relative to the second scroll plate 32 to achieve air collection, so that the air pressure in the housing 10 is lower than the outside air pressure. At this time, outside air enters the housing 10 through the air inlet 11 and is then compressed into the air storage tank 20 through the air outlet 12.

[0052] Furthermore, a guide pipe 13 is provided inside the housing 10; a flow guide port 415 is provided on the side of the first drive unit 41 near the housing 10; the first vortex disk 31 and the second vortex disk 32 are both provided with clearance ports 33 corresponding to the guide pipe 13; wherein, the second drive unit 42 drives the water flow from the flow guide port 415 into the guide pipe 13 to achieve cooling of the first vortex disk 31 and the second vortex disk 32.

[0053] For further information, please refer to [link / reference]. Figure 5 The first scroll plate 31 and the second scroll plate 32 are assembled to form the first diameter 34; the outer diameter of the guide tube 13 is defined as the second diameter; the second diameter is smaller than the first diameter 34.

[0054] Preferably, the first scroll disk 31 and the second scroll disk 32 are assembled to form the first aperture 34, which is the smallest aperture.

[0055] In light of actual working conditions, due to the structure of the first scroll plate 31 and the second scroll plate 32, the diameter formed by the centers of the two scroll plates 31 and 32 will change as the first scroll plate 31 moves relative to the second scroll plate 32. Therefore, when the diameter of the guide tube 13 is always smaller than the minimum diameter formed by the first scroll plate 31 and the second scroll plate 32, the situation of the first scroll plate 31 squeezing the guide tube 13 or interfering with its movement during operation is avoided.

[0056] Furthermore, the housing 10 is also provided with a working chamber 21 and an emergency chamber 22; the vortex gas collection device 30 is located in the working chamber 21; the emergency chamber 22 is connected to both the working chamber 21 and the gas storage tank 20; wherein, the working chamber 21 stores the air absorbed by the vortex gas collection device 30, and the emergency chamber 22 is provided to prevent the pressure inside the working chamber 21 from being too high.

[0057] Preferably, the emergency chamber 22 is located above the housing 10, and the working chamber 21 is located below the housing 10.

[0058] Furthermore, the underwater compressed air energy storage system 100 also includes a counterweight, which is located on the side of the flow transmission device 40 away from the housing 10.

[0059] Furthermore, the underwater compressed air energy storage system 100 also includes: an air inlet channel 15 and a connecting pipe 18, wherein the air inlet 11 is connected to the outside through the air inlet channel 15; the connecting pipe 18 is located between the air outlet 12 and the air storage tank 20, and connects the air outlet 12 and the air storage tank 20.

[0060] For further information, please refer to [link / reference]. Figure 2 The underwater compressed air energy storage system 100 further includes: a first backstop 16, which is disposed in the working chamber 21 to block the air inlet 11 to prevent the air in the working chamber 21 from flowing back to the outside; and a second backstop 17, which is disposed in the connecting pipe 18 corresponding to the air outlet 12 to prevent the gas in the air tank 20 from flowing back to the working chamber 21 through the connecting pipe.

[0061] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An underwater compressed air energy storage system, characterized in that, include: The housing (10) is provided with an air inlet (11) and an air outlet (12), wherein the air inlet (11) is connected to the outside. An air storage tank (20) is located at the air outlet (12); A vortex gas collection device (30) is provided inside the housing (10) and is provided with a power receiving end (301). A drainage transmission device (40) is located on the outside of the housing (10) and connected to the housing (10); The power output end of the diversion transmission device (40) is connected to the power receiving end (301) to drive the vortex gas collection device (30) to rotate.

2. The underwater compressed air energy storage system according to claim 1, characterized in that, The drainage transmission device (40) includes: The first drive unit (41) is provided on the side of the housing (10) away from the gas storage tank (20); The second drive unit (42) is disposed in the first drive unit (41) and connected to the first drive unit (41); The power output end is located in the second drive unit (42).

3. The underwater compressed air energy storage system according to claim 2, characterized in that, The first drive unit (41) includes: A connecting shaft (411) is connected to the housing (10); At least two flow guide fan blades (412) are provided on the connecting shaft (411) and spaced apart along the axial direction of the connecting shaft (411).

4. The underwater compressed air energy storage system according to claim 3, characterized in that, A mounting through hole (413) is provided along the length direction of the connecting shaft (411); The second drive unit (42) includes: A connecting seat (421) is disposed in the mounting through hole (413); A helical rod (422) is located on the side of the connecting seat (421) near the housing (10).

5. The underwater compressed air energy storage system according to claim 4, characterized in that, The connecting shaft (411) has a first hollow part (414) on the side opposite to the housing (10). The second drive unit (42) further includes: The second hollowed-out part (423) is disposed on the connecting seat (421); The first hollowed-out part (414) and the second hollowed-out part (423) are arranged alternately to form a filter structure.

6. The underwater compressed air energy storage system according to any one of claims 2 to 5, characterized in that, The housing (10) has a mounting position on the side near the flow transmission device (40); The vortex gas collecting device (30) includes: The first scroll plate (31) is located at the mounting position; The second scroll plate (32) is located on the side of the first scroll plate (31) away from the mounting position; The power receiving end (301) is located on the side of the first scroll disk (31) near the second drive unit (42).

7. The underwater compressed air energy storage system according to claim 5, characterized in that, The housing (10) is provided with a guide tube (13); The first drive unit (41) has a flow guide (415) on the side near the housing (10). The first vortex disk (31) and the second vortex disk (32) are both provided with clearance openings (33) corresponding to the guide pipe (13); The second drive unit (42) drives the water flow from the guide port (415) into the guide pipe (13).

8. The underwater compressed air energy storage system according to claim 7, characterized in that, The first scroll disk (31) and the second scroll disk (32) are assembled to form the first aperture (34). The outer diameter of the guide tube (13) is defined as the second diameter; The second diameter is smaller than the first diameter (34).

9. The underwater compressed air energy storage system according to claim 1, characterized in that, The housing (10) is also provided with a working chamber (21) and an emergency chamber (22); The vortex gas collecting device (30) is located in the working chamber (21). The emergency chamber (22) is connected to both the working chamber (21) and the gas storage tank (20).

10. The underwater compressed air energy storage system according to claim 1, characterized in that, include: A counterweight is provided on the side of the flow transmission device (40) away from the housing (10).

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