Universal compressed air energy storage flexible storage tank device

Abstract

The universal compressed air energy storage flexible storage tank device comprises a support, a storage tank body is fixedly connected to the middle of the inner side of the support, an air inlet is formed in one end of the outer side of the storage tank body in a penetrating mode, and an exhaust port is formed in the other end of the outer side of the storage tank body in a penetrating mode; the pressure plate is pushed to move upwards through internal overpressure of the storage tank, linear displacement is automatically converted into the rotating opening degree of the valve plate of the pressure relief valve through a linkage mechanism among the gear, the belt wheel and the bevel gear, intelligent pressure relief without external power is achieved, the eccentric involute tooth-shaped gear is adopted, the pressure relief valve has the nonlinear opening characteristic of slow first and fast second, and the pressure relief valve is more stable in pressure relief. Misoperation caused by slight fluctuation of pressure is avoided, quick response at high pressure is ensured, transmission reliability is improved by matching with a polyurethane anti-skid coating belt, vibration is suppressed by a double-spring nested buffer structure, and adaptability, reliability and safety in the pressure relief process are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage systems, and in particular to a universal compressed air energy storage flexible storage tank device. Background Art

[0002] Compressed air energy storage (CAES) flexible tanks are soft containers used to store high-pressure air, typically made of high-strength flexible composite materials (such as rubber-coated fabric). They replace traditional rigid tanks to store energy in CAES systems. During charging, a compressor pressurizes air into a flexible airbag, causing it to expand. During discharge, the compressed air within the airbag is released, driving a generator to generate electricity. Advantages include low cost, foldable transportability, flexible installation (underground, underwater, or in abandoned mines), and adaptability to various terrains, making them particularly suitable for large-scale energy storage projects. Existing compressed air storage tanks generally rely on electronic sensors and externally powered pressure relief valves for overpressure protection, which have significant defects: electronic sensors are prone to failure or accuracy drift in high temperature, high humidity or corrosive environments, resulting in false alarms or missed alarms; external solenoid valves require continuous power supply and lose their protection function in the event of a circuit failure; traditional pressure relief valves are mostly pop-open structures, which will instantly open and release pressure at the slightest pressure increase, causing energy waste and a sudden drop in system pressure; mechanical linkage mechanisms lack a buffer design, and frequent pressure fluctuations can easily lead to wear or jamming of transmission components; ordinary rubber transmission parts are prone to slipping in humid environments, affecting the reliability of the pressure relief response Summary of the Invention

[0003] (1) Technical problems solved In response to the shortcomings of the existing technology, the present invention provides a universal compressed air energy storage flexible storage tank device, which solves the problem that existing compressed air storage tanks generally rely on electronic sensors and external power-driven pressure relief valves to achieve overpressure protection, which has significant defects.

[0004] (2) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a universal compressed air energy storage flexible storage tank device, comprising a bracket, a storage tank body is fixedly connected to the inner middle portion of the bracket, an air inlet is provided through one end of the outer side of the storage tank body, an exhaust port is provided through the other end of the outer side of the storage tank body, a pressure relief pipe is provided through one end of the storage tank body away from the air inlet and exhaust port, a fixed block is fixedly connected to the inner top of the storage tank body, a movable rod is slidably connected to the interior of the fixed block, and a pressure plate is fixedly connected to the bottom of the movable rod; The pressure plate is consistent in size with the internal cavity of the storage tank body. A fixing bracket is installed through the upper end of the pressure relief pipe of the storage tank body. The outer bottom of the fixing bracket is fixedly connected to a support bracket. One end of the upper end of the pressure plate is fixedly connected to a rack. The rack is arranged inside the fixing bracket. The fixing bracket is rotatably connected to a rotating shaft 1 inside. A gear 1 is fixedly connected to the rotating shaft 1, and the gear 1 and the rack are meshed with each other. The fixing bracket is rotatably connected to the adjusting rod at one end near the outer side of the storage tank body, a pressure relief valve is installed in the middle of the pressure relief pipe, the bottom of the adjusting rod passes through the pressure relief valve and is fixedly connected to the valve plate inwardly, the adjusting rod is located on the inner side of the fixing bracket and is fixedly connected to bevel gear 2, the end of the fixing bracket near bevel gear 2 is rotatably connected to rotating shaft 3, one end of the rotating shaft 3 is fixedly connected to bevel gear 1, and the bevel gear 1 and bevel gear 2 are meshed with each other.

[0005] Preferably, one end of the first rotating shaft is fixedly connected to the second pulley, and the other inner end of the fixing frame is rotatably connected to the second rotating shaft.

[0006] Preferably, a pulley 1 is fixedly connected to the rotating shaft 2, and a belt is sleeved on the pulley 1 and the pulley 2.

[0007] Preferably, the rotating shaft 2 is also fixedly connected to a gear 3, and one end of the rotating shaft 3 close to the gear 3 is fixedly connected to the gear 2, and the gear 2 and the gear 3 are meshed with each other.

[0008] Preferably, the outer end of the rack is fixedly connected to a wedge block, and the wedge block is slidably connected to the inside of the fixing frame.

[0009] Preferably, the other inner end of the storage tank body is fixedly connected to a connecting block, the other upper end of the pressure plate is fixedly connected to a sliding rod 1, and the sliding rod 1 is slidably connected to the inside of the connecting block.

[0010] Preferably, a spring is fixedly connected to the inner top of the fixed block, the other end of the spring is fixedly connected to a connecting plate, the top of the movable rod passes through the fixed block and is fixedly connected to the connecting plate inward, the two inner ends of the fixed block are fixedly connected to a sliding rod 2, and the connecting plate is slidably connected to the sliding rod 2.

[0011] Preferably, a sealing ring is fixedly connected to the outer end of the valve plate, and the outer ring of the sealing ring contacts the inner cavity of the pressure relief valve. A water outlet is provided through the bottom of the storage tank body, and a solenoid valve is installed inside the water outlet.

[0012] (3) Beneficial effects The present invention provides a universal compressed air energy storage flexible storage tank device. It has the following beneficial effects: 1. The present invention utilizes the overpressure inside the storage tank to push the pressure plate upward. Through the linkage mechanism between gears, pulleys and bevel gears, the linear displacement is automatically converted into the rotational opening of the pressure relief valve plate, realizing intelligent pressure relief without external power. The use of eccentric involute toothed gears makes the pressure relief valve exhibit a nonlinear opening characteristic of "slow first, then fast", which not only avoids false operation due to slight pressure fluctuations but also ensures rapid response under high pressure. The polyurethane anti-slip coated belt improves transmission reliability, and the double-spring nested buffer structure suppresses vibration, which significantly improves the adaptability, reliability and safety of the pressure relief process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a universal compressed air energy storage flexible storage tank device proposed by the present invention; Figure 2 This is a cross-sectional view of a universal compressed air energy storage flexible storage tank device proposed by the present invention; Figure 3 This is a rear view of a universal compressed air energy storage flexible storage tank device proposed by the present invention; Figure 4 This is a schematic diagram of a rack assembly of a universal compressed air energy storage flexible storage tank device proposed in the present invention; Figure 5 This is an internal cross-sectional view of a fixing frame of a universal compressed air energy storage flexible storage tank device proposed by the present invention; Figure 6 This is a schematic diagram of the valve plate structure of a universal compressed air energy storage flexible storage tank device proposed in the present invention; Figure 7 This is a schematic diagram of the interior of a fixed block of a universal compressed air energy storage flexible storage tank device proposed in the present invention.

[0014] Among them, 1. Storage tank body; 2. Exhaust port; 3. Bracket; 4. Water outlet; 5. Solenoid valve; 6. Fixed block; 7. Air inlet; 8. Pressure plate; 9. Movable rod; 10. Fixed frame; 11. Support frame; 12. Adjusting rod; 13. Pressure relief pipe; 14. Pressure relief valve; 15. Connecting block; 16. Slide bar 1; 17. Rack; 18. Wedge block; 19. Gear 1; 20. Rotating shaft 1; 21. Bevel gear 1; 22. Bevel gear 2; 23. Rotating shaft 2; 24. Rotating shaft 3; 25. Gear 2; 26. Gear 3; 27. Pulley 1; 28. Belt; 29. ​​Pulley 2; 30. Valve plate; 31. Sealing ring; 32. Slide bar 2; 33. Connecting plate; 34. Spring. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example: like Figure 1-7 As shown, the embodiment of the present invention provides a universal compressed air energy storage flexible storage tank device, including a bracket 3, a storage tank body 1 is fixedly connected to the inner middle part of the bracket 3, an air inlet 7 is provided through one end of the outer side of the storage tank body 1, an exhaust port 2 is provided through the other end of the outer side of the storage tank body 1, a pressure relief pipe 13 is provided through one end of the storage tank body 1 away from the air inlet 7 and the exhaust port 2, a fixing block 6 is fixedly connected to the inner top of the storage tank body 1, a movable rod 9 is slidably connected to the inside of the fixing block 6, a pressure plate 8 is fixedly connected to the bottom of the movable rod 9, a one-way valve is installed inside the air inlet 7, and a solenoid valve is installed inside the exhaust port 2 to control the air intake and exhaust of the device. Secondly, the pressure plate 8 can provide real-time feedback on the air pressure inside the storage tank body 1; The pressure plate 8 is consistent in size with the internal cavity of the tank body 1. The tank body 1 is located at the upper end of the pressure relief pipe 13 and is penetrated by a fixing frame 10. The outer bottom of the fixing frame 10 is fixedly connected to a support frame 11. The upper end of the pressure plate 8 is fixedly connected to a rack 17. The rack 17 is set inside the fixing frame 10. The interior of the fixing frame 10 is rotatably connected to a rotating shaft 20. A gear 19 is fixedly connected to the rotating shaft 20. The gear 19 and the rack 17 are engaged with each other. The fixing frame 10 is rotatably connected to the adjusting rod 12 at one end outside the tank body 1. A pressure relief valve 14 is installed in the middle of the pressure relief pipe 13. The bottom of the adjusting rod 12 passes through the pressure relief valve 14 and is fixedly connected inwardly. The valve plate 30 is connected, and the adjusting rod 12 is located on the inner side of the fixed frame 10 and is fixedly connected to the bevel gear 22. The end of the fixed frame 10 near the bevel gear 22 is rotatably connected to the rotating shaft 3 24. One end of the rotating shaft 3 24 is fixedly connected to the bevel gear 1 21. The bevel gear 1 21 and the bevel gear 2 22 are meshed with each other. One end of the rotating shaft 1 20 is fixedly connected to the pulley 2 29. The other end of the inner side of the fixed frame 10 is rotatably connected to the rotating shaft 23. The rotating shaft 23 is fixedly connected to the pulley 1 27. The pulley 1 27 and the pulley 2 29 are provided with a belt 28. The rotating shaft 23 is also fixedly connected to the gear 3 26. The rotating shaft 3 24 is close to the gear 3 26. The end is fixedly connected with gear 25, and gear 25 and gear 3 26 are meshed with each other. When the air pressure inside the storage tank body 1 is too high, the air pressure will gradually generate pressure on the pressure plate 8 at the top, and the pressure plate 8 can buffer the air under the action of the spring 34 and the connecting plate 33. Secondly, the pressure plate 8 will gradually move upward as the internal air pressure increases, and will simultaneously drive the rack 17 to move upward, and can drive gear 19 to rotate under the meshing action. Under the transmission of gear 19, the rotation of shaft 1 20 and pulley 2 29 can be realized. Similarly, under the transmission action of belt 28, pulley 1 27 and shaft 2 23 can be driven to rotate. The gear 25 and the shaft 24 are meshed together, thereby driving the bevel gear 22 to rotate. Finally, the adjusting rod 12 and the bevel gear 1 21 are rotated under the meshing action of the bevel gear 22. Finally, the rotation of the adjusting rod 12 can drive the valve plate 30 inside the pressure relief valve 14 to gradually rotate, thereby gradually opening the pressure relief pipe 13 and discharging the internal gas components to the outside, thereby achieving the effect of automatic pressure relief according to the internal pressure. The inner side of the belt 28 is pre-coated with a polyurethane anti-slip coating to replace the ordinary rubber belt to improve the transmission efficiency in a humid environment. The outer end of the rack 17 is fixedly connected to a wedge block 18, and the wedge block 18 is slidably connected to the inside of the fixed frame 10. By setting the wedge block 18, the rack 17 can be restricted to ensure that the rack 17 can slide stably inside the fixed frame 10. Secondly, the outer ends of the rack 17 correspond to the openings of the fixed frame 10, and can also be restricted to ensure stable sliding. A group of short-stroke high-rigidity springs are nested inside the spring 34. The initial pressure is absorbed by the outer spring. At high pressure, the double springs work together to suppress vibration. Secondly, the gear 19 is designed to be an eccentric involute tooth profile, so that the valve plate 30 rotates at a small angle when the rack 17 is initially displaced, and the same displacement in the later stage corresponds to a larger opening, realizing a "slow first, then fast" discharge characteristic; The other end of the inner side of the storage tank body 1 is fixedly connected to a connecting block 15, and the other end above the pressure plate 8 is fixedly connected to a sliding rod 16. The sliding rod 16 is slidably connected to the inside of the connecting block 15. By setting the sliding rod 16, the connecting block 15 can be restricted to ensure the stability of the pressure plate 8 when sliding under pressure. In order to ensure the sealing effect of the pressure plate 8, a sealing ring is also installed at the outer end of the pressure plate 8 to improve its sealing effect. During subsequent installation, an exhaust port is also opened on the top of the storage tank body 1 to discharge the compressed air entering the upper cavity of the pressure plate 8. The top of the inner side of the fixed block 6 is fixedly connected with a spring 34, and the other end of the spring 34 is fixedly connected with a connecting plate 33. The top of the movable rod 9 passes through the fixed block 6 and is fixedly connected to the connecting plate 33 inwardly. The two ends of the inner side of the fixed block 6 are fixedly connected with a second sliding rod 32, and the connecting plate 33 is slidably connected to the second sliding rod 32. By arranging the spring 35 and the connecting plate 33, the pressure plate 8 can have a certain buffering effect to buffer the compressed air inside. The outer end of the valve plate 30 is fixedly connected to a sealing ring 31, and the outer ring of the sealing ring 31 is in contact with the inner cavity of the pressure relief valve 14. A water outlet 4 is provided through the bottom of the storage tank body 1, and an electromagnetic valve 5 is installed inside the water outlet 4. The sealing effect of the valve plate 30 is improved by providing the sealing ring 31. Secondly, the water outlet 4 at the bottom can discharge moisture in the air.

[0017] Working principle: When in use, the air inlet 7 and the exhaust port 2 are connected to the external pipeline, and a solenoid valve is installed inside the exhaust port 2, and a one-way valve is installed inside the air inlet 7 to allow air to enter the interior of the storage tank body 1 to realize the storage of compressed air. When the air pressure inside the storage tank body 1 is too high, the air pressure will gradually generate pressure on the pressure plate 8 at the top, and the pressure plate 8 can buffer the air under the action of the spring 34 and the connecting plate 33. Secondly, the pressure plate 8 will gradually move upward as the internal air pressure increases, and will simultaneously drive the rack 17 to move upward, and can drive the gear 19 to rotate under the meshing action, and can realize the rotation of the rotating shaft 20 and the pulley 2 29 under the transmission of the gear 19. Similarly, under the transmission action of the belt 28, the pulley 1 27 and the rotating shaft 2 23 can be driven to rotate, and then the rotating shaft 2 23 can drive the gear 3 26 to rotate, and drive the gear 2 25 and the rotating shaft 3 24 to rotate under the meshing action, thereby driving the bevel gear 2 22 to rotate, and finally, under the meshing action of the bevel gear 2 22, the adjusting rod 12 and the bevel gear 1 21 are rotated. Finally, the rotation of the adjusting rod 12 can drive the valve plate 30 inside the pressure relief valve 14 to gradually rotate, so that the pressure relief pipe 13 gradually opens, and the internal gas components are discharged to the outside, thereby achieving the effect of automatic pressure relief according to the internal pressure, so as to ensure that the pressure inside the entire storage tank body 1 is even, and avoid dangerous situations caused by excessive pressure.

[0018] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A universal compressed air energy storage flexible storage tank device, comprising a bracket (3), characterized in that: The middle part of the inner side of the bracket (3) is fixedly connected to the storage tank body (1), an air inlet (7) is provided through one end of the outer side of the storage tank body (1), an exhaust port (2) is provided through the other end of the outer side of the storage tank body (1), a pressure relief pipe (13) is provided through one end of the storage tank body (1) away from the air inlet (7) and the exhaust port (2), a fixed block (6) is fixedly connected to the inner top of the storage tank body (1), a movable rod (9) is slidably connected to the inside of the fixed block (6), and a pressure plate (8) is fixedly connected to the bottom of the movable rod (9); The pressure plate (8) is consistent in size with the internal cavity of the storage tank body (1); a fixing frame (10) is installed on the upper end of the pressure relief pipe (13) of the storage tank body (1); the outer bottom of the fixing frame (10) is fixedly connected to a support frame (11); the upper end of the pressure plate (8) is fixedly connected to a rack (17); the rack (17) is set inside the fixing frame (10); the fixing frame (10) is rotatably connected to a rotating shaft (20) inside, and a gear (19) is fixedly connected to the rotating shaft (20); the gear (19) and the rack (17) are meshed with each other; The fixing frame (10) is rotatably connected to the regulating rod (12) at one end near the outside of the storage tank body (1), a pressure relief valve (14) is installed in the middle of the pressure relief pipe (13), the bottom of the regulating rod (12) passes through the pressure relief valve (14) and is fixedly connected to the valve plate (30) inwardly, the regulating rod (12) is located on the inner side of the fixing frame (10) and is fixedly connected to the bevel gear 2 (22), the end of the fixing frame (10) near the bevel gear 2 (22) is rotatably connected to the rotating shaft 3 (24), one end of the rotating shaft 3 (24) is fixedly connected to the bevel gear 1 (21), and the bevel gear 1 (21) and the bevel gear 2 (22) are meshed with each other.

2. A universal compressed air energy storage flexible storage tank device according to claim 1, characterized in that: One end of the rotating shaft 1 (20) is fixedly connected to the pulley 2 (29), and the other end inside the fixed frame (10) is rotatably connected to the rotating shaft 2 (23).

3. A universal compressed air energy storage flexible storage tank device according to claim 2, characterized in that: The second rotating shaft (23) is fixedly connected to a pulley one (27), and a belt (28) is sleeved on the pulley one (27) and the pulley two (29).

4. A universal compressed air energy storage flexible storage tank device according to claim 2, characterized in that: The rotating shaft 2 (23) is also fixedly connected to the gear 3 (26), and the rotating shaft 3 (24) is fixedly connected to the gear 2 (25) at one end close to the gear 3 (26), and the gear 2 (25) and the gear 3 (26) are meshed with each other.

5. The universal compressed air energy storage flexible storage tank device according to claim 1, characterized in that: The outer end of the rack (17) is fixedly connected to a wedge block (18), and the wedge block (18) is slidably connected to the interior of the fixing frame (10).

6. A universal compressed air energy storage flexible storage tank device according to claim 1, characterized in that: The other inner end of the storage tank body (1) is fixedly connected to a connecting block (15), and the other upper end of the pressure plate (8) is fixedly connected to a sliding rod (16), and the sliding rod (16) is slidably connected to the inside of the connecting block (15).

7. The universal compressed air energy storage flexible storage tank device according to claim 1, characterized in that: The inner top of the fixed block (6) is fixedly connected to a spring (34), and the other end of the spring (34) is fixedly connected to a connecting plate (33). The top of the movable rod (9) passes through the fixed block (6) and is fixedly connected to the connecting plate (33) inwardly. The inner two ends of the fixed block (6) are fixedly connected to a second sliding rod (32), and the connecting plate (33) is slidably connected to the second sliding rod (32).

8. The universal compressed air energy storage flexible storage tank device according to claim 1, characterized in that: The outer end of the valve plate (30) is fixedly connected to a sealing ring (31), and the outer ring of the sealing ring (31) contacts the inner cavity of the pressure relief valve (14). A water outlet (4) is provided through the bottom of the storage tank body (1), and a solenoid valve (5) is installed inside the water outlet (4).

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