Energy storage fan and method of using the same

Abstract

The present invention relates to the field of wind turbine energy storage technology, and more specifically, to an energy storage wind turbine and a method of using the same, including a wind turbine tower and a wind wheel assembly installed on the top of the wind turbine tower, wherein the wind turbine tower includes a tower body and a lower water cavity, an active cavity and an upper water cavity arranged in sequence from bottom to top in the tower body; a cooling assembly is provided near the middle of the outer wall of the tower body, and the cooling assembly includes a rotating ring structure, a counterweight structure arranged in the active cavity, two auxiliary wind turbine structures arranged on the left and right sides of the rotating ring structure, and a cooling structure for connecting the lower water cavity and the upper water cavity. By providing a cooling assembly, the energy storage wind turbine can cool down the speed-increasing gearbox when encountering strong winds, so as to avoid excessive rotation speed and damage to the internal parts of the speed-increasing gearbox. At the same time, the kinetic energy of the auxiliary wind turbine can be converted into the gravitational potential energy of the counterweight block for storage.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind turbine energy storage, and specifically relates to an energy storage wind turbine and a method for using the same. Background Art

[0002] With the development of social economy, the utilization of clean energy is becoming more and more important, among which the utilization of wind energy accounts for a large proportion. Energy storage wind turbine is a device that converts wind energy into electrical energy for storage.

[0003] For example, the invention patent with authorization announcement number CN118214214A discloses a medium-voltage DC energy storage wind power generation system and array in the field of wind power generation technology, including: a wind terminal, which is used to convert wind energy into mechanical energy; a DC-excited reluctance flywheel generator, which is connected to the wind terminal and is used to convert the mechanical energy into electromagnetic energy and output constant-voltage DC power; a medium-voltage DC energy storage station, which is connected to the DC-excited reluctance flywheel generator for charging and / or discharging; an inverter unit, which is simultaneously connected to the medium-voltage DC energy storage station and the DC-excited reluctance flywheel generator, and is used to convert the connected DC power into AC power output, and the inverter unit preferentially connects to the DC power output by the DC-excited reluctance flywheel generator; the medium-voltage DC energy storage power generation system creatively iterates the medium-sized wind energy system and cooperates with the energy storage DC energy storage network.

[0004] Combining the above cases and actual conditions, we found the following problem: When the energy storage fan encounters strong winds, the fan speed is extremely fast. The fast-rotating fan will drive the planetary gears inside the speed-increasing gearbox to rotate rapidly, causing the temperature of the internal gear parts to increase rapidly. It is difficult to directly cool down the interior of the cabin in the existing technology, resulting in the need to frequently check and replace the internal parts of the gearbox. Summary of the invention

[0005] The object of the present invention is to provide an energy storage fan and a method of using the same to solve the above-mentioned problems in the prior art.

[0006] To achieve the above object, the present invention provides an energy storage wind turbine, comprising a wind turbine tower and a wind rotor assembly installed on the top of the wind turbine tower, wherein the wind rotor assembly comprises a nacelle, a main wind turbine arranged in the middle of the front outer wall of the nacelle, a speed increasing gearbox arranged at the front side of the nacelle, a generator arranged at the rear side of the nacelle, and a yaw system arranged between the top of the wind turbine tower and the bottom of the nacelle, wherein the wind turbine tower comprises a tower body and a lower water cavity, an active cavity, and an upper water cavity arranged in the tower body from bottom to top in sequence;

[0007] A cooling component is provided near the middle of the outer wall of the tower body, and the cooling component includes a rotating ring structure, a counterweight structure arranged in the movable cavity, two auxiliary fan structures arranged on the left and right sides of the rotating ring structure, and a cooling structure for connecting the lower water cavity and the upper water cavity;

[0008] The counterweight structure includes a counterweight block, two sliding rods symmetrically arranged on the upper and lower sides of the counterweight block, and two pistons fixed to the outer ends of the corresponding sliding rods. The radius of the counterweight block is the same as the inner radius of the active cavity. The outer ends of the upper and lower sliding rods respectively pass through the corresponding side cavity walls of the active cavity and extend into the upper water cavity and the lower water cavity respectively. The size of the piston is adapted to the inner diameter of the upper water cavity and the lower water cavity.

[0009] The cooling structure comprises an outer tube, an inner tube and a spiral tube for connecting the outer tube and the inner tube, and the spiral tube is wound around the outer wall of the speed increasing gear box.

[0010] In the technical solution of the present invention, the upper water chamber is filled with cooling water, one end of the outer tube is connected to the spiral tube, and the other end is connected to the bottom wall of the lower water chamber, one end of the inner tube is connected to the top wall of the upper water chamber, and the other end passes upward through the yaw system to connect to the spiral tube, the upper half of the outer tube is arranged outside the tower body, and the outer tube and the inner tube are both metal bellows.

[0011] In the technical solution of the present invention, a buffer structure is symmetrically provided on the upper and lower inner walls of the active cavity, and the buffer structure includes a pad, a plurality of regularly arranged buffer rods and a fixed sleeve corresponding to the buffer rods one by one, and the fixed sleeve is fixed on the upper and lower side walls of the corresponding active cavity, one end of the buffer rod extends into the corresponding fixed sleeve, and the other end is fixed to the corresponding pad, and a spring for buffering is provided in the fixed sleeve.

[0012] In the technical solution of the present invention, the auxiliary fan structure includes a cross bar whose inner end is fixed to the outer wall of the rotating ring structure and an auxiliary fan arranged at the outer end of the cross bar, and the auxiliary fan is in the same direction as the main fan.

[0013] In the technical solution of the present invention, rope grooves are symmetrically arranged on the side walls of the movable cavity, a movable barrel groove is arranged between the cavity wall of the movable cavity and the outer wall of the tower body, and embedding grooves are symmetrically arranged on the lower part of the outer wall of the movable barrel groove.

[0014] In the technical solution of the present invention, the swivel structure includes a swivel and two limit blocks symmetrically fixed on the inner wall of the swivel, the inner side of the limit block passes through the embedded groove on the corresponding side and can rotate, and a connecting rod is provided on the rear side of the upper end surface of the swivel, the upper end of the connecting rod is fixed to the rear of the bottom surface of the cabin, and the lower end is fixed to the upper end surface of the swivel.

[0015] In the technical solution of the present invention, a cable structure is symmetrically arranged in the movable cylinder groove, and the cable structure includes a mounting cylinder, two fixed pulleys arranged in the mounting cylinder, and a steel cable for pulling the counterweight block.

[0016] In the technical solution of the present invention, the two fixed pulleys are respectively arranged at the upper and lower ends of the mounting cylinder, one end of the steel cable is fixed to the counterweight block, and the other end passes through the rope groove on the corresponding side, the wall of the mounting cylinder and from the upper side of the upper fixed pulley, from the inside of the lower fixed pulley, out from the outside, and through the corresponding side block, the swivel ring wall and the cross bar until it is fixed to the side wall of the rotating shaft of the auxiliary fan.

[0017] In the technical solution of the present invention, a clamping block is provided in the middle of the upper and lower outer walls of the installation cylinder, and a clamping groove corresponding to the position and size of the clamping block is provided on the upper and lower groove walls of the movable cylinder groove.

[0018] On the other hand, the present invention also provides a method for using an energy storage wind turbine, comprising the following steps:

[0019] S1. When in use, the main fan is driven by wind to rotate, and the speed is increased by the speed increasing gearbox to drive the generator rotor to rotate to generate electricity and store energy;

[0020] S2. When the direction of the main fan needs to be adjusted, the yaw motor inside the yaw system is started to drive the nacelle to rotate so that the main fan faces the wind again;

[0021] S3. When the nacelle rotates, the connecting rod will drive the swivel to rotate synchronously and drive the crossbar to rotate, thereby causing the auxiliary fan to rotate synchronously with the main fan to adjust the headwind;

[0022] S4. When the wind is too strong, the auxiliary fan will be blown and rotate, which will then roll up the steel cable and pull up the counterweight block under the transmission of the fixed pulley. The upward moving counterweight block drives the upper piston to push the cooling water in the upper water chamber through the upper sliding rod, so that the cooling water continuously flows from the inner tube to the outer tube and finally enters the lower water chamber. The cooling water can cool the speed increasing gearbox through the spiral tube;

[0023] S5. As the counterweight is continuously pulled up, the kinetic energy of the auxiliary fan is converted into the gravitational potential energy of the counterweight. As the wind force gradually weakens, the counterweight will slowly fall down and drive the lower piston downward through the lower sliding rod to press the cooling water in the lower water chamber back into the upper water chamber.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. In the present invention, by setting a cooling component, when the wind force is too strong, the auxiliary fan will be blown and rotate, and then the steel cable will be rolled up, and the counterweight block will be pulled up under the transmission of the fixed pulley. The upwardly moved counterweight block drives the upper piston to push up the cooling water in the upper water chamber through the upper sliding rod, so that the cooling water continuously flows from the inner tube to the outer tube and finally enters the lower water chamber. The cooling water can cool the speed-increasing gearbox through the spiral tube, thereby extending the service life.

[0026] 2. In the present invention, at the same time, as the counterweight is continuously pulled up, the kinetic energy of the auxiliary fan's rotation is converted into the gravitational potential energy of the counterweight for storage. As the wind force gradually weakens, the counterweight will slowly fall down, and the gravitational potential energy during the falling process can be converted into electrical energy for storage through existing technology.

[0027] 3. In the present invention, a swivel structure is provided. When the yaw system adjusts the direction of the main fan, the swivel can rotate synchronously with the main fan through the connecting rod transmission, thereby driving the auxiliary fan to rotate synchronously, so that the auxiliary fan and the main fan always maintain the same direction, avoiding the situation where the auxiliary fan and the main fan have inconsistent directions when encountering strong winds, resulting in the auxiliary fan being unable to receive the same wind force as the main fan, and thus being unable to pull up the counterweight block for cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the interior of the cabin of the present invention;

[0030] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the interior of the wind turbine tower in the present invention;

[0032] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 It is a schematic diagram of the auxiliary fan structure in the present invention;

[0034] Figure 7 It is a schematic diagram of the counterweight structure in the present invention;

[0035] Figure 8 It is a cross-sectional view of the counterweight structure in the present invention;

[0036] Fig. 9 It is a schematic diagram of the cable structure in the present invention;

[0037] Fig.10 It is a schematic diagram of the rotating ring structure in the present invention;

[0038] Fig.11 It is a schematic diagram of the buffer structure in the present invention;

[0039] Description of reference numerals:

[0040] 1. Wind turbine tower; 11. Tower body; 12. Lower water chamber; 13. Active chamber; 131. Rope groove; 132. Active tube groove; 133. Clamping groove; 134. Embedding groove; 14. Upper water chamber; 15. Buffer structure; 151. Pad; 152. Buffer rod; 153. Fixed sleeve; 154. Spring;

[0041] 2. Wind rotor assembly; 21. Nacelle; 22. Main fan; 23. Yaw system; 24. Speed ​​increasing gearbox; 25. Generator;

[0042] 3. Cooling assembly; 31. Rotating ring structure; 311. Rotating ring; 312. Limiting block; 32. Auxiliary fan structure; 321. Cross bar; 322. Auxiliary fan; 33. Cooling structure; 331. Outer tube; 332. Spiral tube; 333. Inner tube; 34. Counterweight structure; 341. Counterweight block; 342. Sliding rod; 343. Piston; 35. Connecting rod; 36. Cable structure; 361. Mounting cylinder; 362. Fixed pulley; 363. Steel cable; 364. Block. DETAILED DESCRIPTION

[0043] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0044] Unless explicitly stated otherwise, throughout the specification, the term “comprise” or variations thereof such as “include” or “comprising” will be understood as including the stated elements or components but not excluding other elements or components.

[0045] Reference Figure 1-Figure 11 As shown, this embodiment provides a technical solution:

[0046] A wind turbine with energy storage comprises a wind turbine tower 1 and a wind rotor assembly 2 installed on the top of the wind turbine tower 1, wherein the wind rotor assembly 2 comprises a nacelle 21, a main wind turbine 22 arranged in the middle of the front outer wall of the nacelle 21, a speed increasing gearbox 24 arranged in the front side of the nacelle 21, a generator 25 arranged in the rear side of the nacelle 21, and a yaw system 23 arranged between the top of the wind turbine tower 1 and the bottom of the nacelle 21, wherein the yaw system 23 generally comprises a wind direction sensor, a yaw motor, a transmission device and a reducer, and when the wind direction sensor detects that the wind direction is inconsistent with the direction of the main wind turbine 22, the yaw motor is started to drive the entire nacelle 21 to rotate through the transmission device, and the rotation range is generally within 30 degrees, so that the main wind turbine 22 faces the direction of the wind, which is the existing technology of wind turbine energy storage and will not be described in detail here;

[0047] The wind turbine tower 1 includes a tower body 11 and a lower water chamber 12, an active chamber 13 and an upper water chamber 14 arranged in sequence from bottom to top in the tower body 11. By arranging the upper water chamber 14 and the lower water chamber 12, cooling water can flow, and when the wind force is too strong, the speed increasing gear box 24 can be effectively cooled to avoid damage to the speed increasing gear box 24.

[0048] A cooling assembly 3 is provided at the middle of the outer wall of the tower body 11. The cooling assembly 3 includes a rotating ring structure 31, a counterweight structure 34 arranged in the active cavity 13, two auxiliary fan structures 32 arranged on the left and right sides of the rotating ring structure 31, and a cooling structure 33 for connecting the lower water cavity 12 and the upper water cavity 14. The counterweight structure 34 can not only drive the cooling water to flow, but also convert the kinetic energy of the auxiliary fan 322 into the gravitational potential energy storage of the counterweight block 341 while rising. The counterweight block 341 releases the energy when it falls, and the energy can be converted into electrical energy storage through the existing technology;

[0049] The counterweight structure 34 includes a counterweight block 341, two sliding rods 342 symmetrically arranged on the upper and lower sides of the counterweight block 341, and two pistons 343 fixed on the outer ends of the corresponding sliding rods 342. The radius of the counterweight block 341 is the same as the inner radius of the active chamber 13. The outer ends of the upper and lower sliding rods 342 respectively pass through the corresponding side cavity walls of the active chamber 13 and extend into the upper water cavity 14 and the lower water cavity 12 respectively. The size of the piston 343 is adapted to the inner diameter size of the upper water cavity 14 and the lower water cavity 12. When the wind force is too strong, the counterweight block 341 will be pulled up, and then the upper piston 343 will be driven to move up through the upper sliding rod 342, pushing the cooling water in the upper water cavity 14 to move up, enter the spiral tube 332 through the inner tube 333, and then flow into the lower water cavity 12 from the outer tube 331. During the rising process, the cooling water continuously flows through the spiral tube 332, which can effectively cool the speed increasing gearbox 24.

[0050] The cooling structure 33 includes an outer tube 331, an inner tube 333 and a spiral tube 332 for connecting the outer tube 331 and the inner tube 333. The spiral tube 332 is wound around the outer wall of the speed increasing gearbox 24. The outer tube 331 and the inner tube 333 are arranged to connect the lower water chamber 12 and the upper water chamber 14.

[0051] Among them, Figure 1-Figure 4 As shown, the upper water chamber 14 is filled with cooling water, one end of the outer tube 331 is connected to the spiral tube 332, and the other end is connected to the bottom wall of the lower water chamber 12, one end of the inner tube 333 is connected to the top wall of the upper water chamber 14, and the other end passes upward through the yaw system 23 and is connected to the spiral tube 332, so that the cooling water can flow between the upper water chamber 14 and the lower water chamber 12;

[0052] Furthermore, the upper part of the outer tube 331 is arranged outside the tower body 11. When the cooling water passes through this part, it can be cooled to a certain extent under the action of external wind. The outer tube 331 and the inner tube 333 are both metal bellows. The metal bellows have a certain elasticity. When the yaw motor drives the entire cabin 21 to rotate through the transmission device, the outer tube 331 and the inner tube 333 can be expanded and contracted to a certain extent to avoid direct damage to the outer tube 331 and the inner tube 333 during rotation.

[0053] In addition, if Figure 4 and Fig.11 As shown, a buffer structure 15 is symmetrically provided on the upper and lower inner walls of the active cavity 13. The buffer structure 15 includes a pad 151, a plurality of regularly arranged buffer rods 152 and a fixed sleeve 153 corresponding to the buffer rods 152. The fixed sleeve 153 is fixed on the upper and lower side walls of the corresponding active cavity 13. One end of the buffer rod 152 extends into the corresponding fixed sleeve 153 and the other end is fixed to the corresponding pad 151. A spring 154 for buffering is provided in the fixed sleeve 153. By providing the pad 151, the counterweight 341 can be prevented from directly hitting the upper and lower inner walls of the active cavity 13, thereby extending the service life of the active cavity 13.

[0054] In addition, if Figure 6 The auxiliary fan structure 32 shown includes a cross bar 321 whose inner end is fixed to the outer wall of the rotating ring structure 31 and an auxiliary fan 322 arranged at the outer end of the cross bar 321. The auxiliary fan 322 is in the same direction as the main fan 22, and the auxiliary fan 322 is smaller than the main fan 22. Since the auxiliary fan 322 and the counterweight block 341 are connected by a steel cable 363, when the wind force is normal, the main fan 22 rotates, and the auxiliary fan 322 does not rotate due to the traction of the counterweight block 341. When the wind force is too strong, the auxiliary fan 322 rotates and pulls the counterweight block 341.

[0055] Furthermore, if Figure 5 As shown, rope grooves 131 are symmetrically arranged on the side wall of the movable cavity 13, for the steel cable 363 to pass through the rope grooves 131 to connect to the counterweight 341. At the same time, when the cabin 21 and the swivel structure 31 rotate, the rope grooves 131 facilitate the synchronous rotation of the steel cable 363 to avoid the situation where the steel cable 363 cannot move synchronously, resulting in the counterweight 341 being directly pulled up during rotation. A movable barrel groove 132 is arranged between the cavity wall of the movable cavity 13 and the outer wall of the tower body 11. The mounting barrel 361 is conveniently arranged in the movable barrel groove 132. At the same time, the mounting barrel 361 can rotate together with the cabin 21 in the movable barrel groove 132. The outer wall of the mounting barrel 361 is symmetrically arranged with embedded grooves 134 near the lower part.

[0056] In addition, if Fig.10As shown, the swivel structure 31 includes a swivel 311 and two limit blocks 312 symmetrically fixed on the inner wall of the swivel 311. The inner side of the limit block 312 passes through the corresponding side embedded groove 134 and can rotate. A connecting rod 35 is provided on the rear side of the upper end surface of the swivel 311. The upper end of the connecting rod 35 is fixed to the rear of the bottom surface of the cabin 21, and the lower end is fixed to the upper end surface of the swivel 311. The swivel 311 can be installed through the limit block 312 and the embedded groove 134 without affecting the rotation of the swivel 311.

[0057] Furthermore, if Figure 6-Figure 9 A cable structure 36 is symmetrically arranged in the movable cylinder groove 132, and the cable structure 36 includes a mounting cylinder 361, two fixed pulleys 362 arranged in the mounting cylinder 361, and a steel cable 363 for pulling the counterweight 341. The two fixed pulleys 362 are respectively arranged at the upper and lower ends of the mounting cylinder 361. One end of the steel cable 363 is fixed to the counterweight 341, and the other end passes through the corresponding side rope groove 131, the cylinder wall of the mounting cylinder 361, and passes through the upper side of the upper fixed pulley 362, passes through the inner side of the lower fixed pulley 362, passes out from the outer side, and passes through the corresponding side limit block 312, the ring wall of the rotating ring 311 and the cross bar 321 until it is fixed to the side wall of the rotating shaft of the auxiliary fan 322. When the auxiliary fan 322 rotates, the steel cable 363 will be rolled up, and then the counterweight 341 can be pulled up under the transmission of the two fixed pulleys 362.

[0058] Specifically, a block 364 is provided in the middle of the upper and lower outer walls of the mounting cylinder 361, and a slot 133 corresponding to the position and size of the block 364 is provided on the upper and lower groove walls of the movable cylinder groove 132. By setting the slot 133 and the block 364, the mounting cylinder 361 can only maintain a vertical state during the rotation process, thereby avoiding deflection and causing damage to the entire cable structure 36.

[0059] The method for using the energy storage fan in the present invention comprises the following steps:

[0060] S1. When in use, under the action of wind, the main fan 22 is driven to rotate, and the speed is increased by the speed increasing gear box 24, which drives the rotor of the generator 25 to rotate to generate electricity and store energy;

[0061] S2. When the direction of the main fan 22 needs to be adjusted, the yaw motor inside the yaw system 23 is started to drive the nacelle 21 to rotate so that the main fan 22 faces the wind again;

[0062] S3. When the nacelle 21 rotates, the connecting rod 35 drives the rotating ring 311 to rotate synchronously and drives the cross bar 321 to rotate, thereby causing the auxiliary fan 322 to rotate synchronously with the main fan 22 to adjust the headwind;

[0063] S4. When the wind is too strong, the auxiliary fan 322 will be blown to rotate, and then the steel cable 363 will be rolled up, and the counterweight block 341 will be pulled up under the transmission of the fixed pulley 362. The upwardly moved counterweight block 341 drives the upper piston 343 to push the cooling water in the upper water chamber 14 through the upper sliding rod 342, so that the cooling water continuously flows from the inner tube 333 to the outer tube 331 and finally enters the lower water chamber 12. The cooling water can cool the speed increasing gear box 24 through the spiral tube 332;

[0064] S5. As the counterweight 341 is continuously pulled up, the kinetic energy of the rotation of the auxiliary fan 322 is converted into the gravitational potential energy storage of the counterweight 341. As the wind force gradually weakens, the counterweight 341 will slowly fall down and drive the lower piston 343 downward through the lower sliding rod 342 to press the cooling water in the lower water chamber 12 back into the upper water chamber 14.

[0065] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. An energy storage wind turbine, comprising a wind turbine tower (1) and a wind rotor assembly (2) mounted on the top of the wind turbine tower (1), the wind rotor assembly (2) comprising a nacelle (21), a main wind turbine (22) arranged in the middle of the front outer wall of the nacelle (21), a speed increasing gearbox (24) arranged on the front side of the nacelle (21), a generator (25) arranged on the rear side of the nacelle (21), and a yaw system (23) arranged between the top of the wind turbine tower (1) and the bottom of the nacelle (21), characterized in that: The wind turbine tower (1) comprises a tower body (11) and a lower water chamber (12), a movable chamber (13) and an upper water chamber (14) which are arranged in sequence from bottom to top in the tower body (11); A cooling component (3) is provided at the middle of the outer wall of the tower body (11), the cooling component (3) comprising a rotating ring structure (31), a counterweight structure (34) arranged in the movable cavity (13), two auxiliary fan structures (32) arranged on the left and right sides of the rotating ring structure (31), and a cooling structure (33) for connecting the lower water cavity (12) and the upper water cavity (14); The counterweight structure (34) comprises a counterweight block (341), two sliding rods (342) symmetrically arranged on the upper and lower sides of the counterweight block (341), and two pistons (343) fixed to the outer ends of the corresponding sliding rods (342); the radius of the counterweight block (341) is the same as the inner radius of the active cavity (13); the outer ends of the upper and lower sliding rods (342) respectively pass through the corresponding side cavity walls of the active cavity (13) and extend into the upper water cavity (14) and the lower water cavity (12); the size of the piston (343) is adapted to the inner diameter of the upper water cavity (14) and the lower water cavity (12); The cooling structure (33) comprises an outer tube (331), an inner tube (333), and a spiral tube (332) for connecting the outer tube (331) and the inner tube (333), wherein the spiral tube (332) is wound around the outer wall of the speed increasing gear box (24); rope grooves (131) are symmetrically provided on the side wall of the movable cavity (13), a movable tube groove (132) is provided between the cavity wall of the movable cavity (13) and the outer wall of the tower body (11), and embedded grooves (134) are symmetrically provided on the lower part of the outer wall of the movable tube groove (132); The swivel structure (31) comprises a swivel (311) and two limit blocks (312) symmetrically fixed on the inner wall of the swivel (311); the inner sides of the limit blocks (312) pass through the corresponding embedded grooves (134) and are rotatable; a connecting rod (35) is provided on the rear side of the upper end surface of the swivel (311); the upper end of the connecting rod (35) is fixed to the rear of the bottom surface of the cabin (21), and the lower end is fixed to the upper end surface of the swivel (311); A cable structure (36) is symmetrically disposed in the movable cylinder groove (132), and the cable structure (36) comprises a mounting cylinder (361), two fixed pulleys (362) disposed in the mounting cylinder (361), and a steel cable (363) for pulling the counterweight block (341).

2. The energy storage fan according to claim 1, characterized in that: The upper water chamber (14) is filled with cooling water; one end of the outer tube (331) is in communication with the spiral tube (332), and the other end is in communication with the bottom wall of the lower water chamber (12); one end of the inner tube (333) is in communication with the top wall of the upper water chamber (14), and the other end passes upward through the yaw system (23) and is in communication with the spiral tube (332); the upper half of the outer tube (331) is arranged outside the tower body (11); and the outer tube (331) and the inner tube (333) are both metal bellows.

3. The energy storage fan according to claim 2, characterized in that: The upper and lower inner walls of the movable cavity (13) are symmetrically provided with a buffer structure (15), the buffer structure (15) comprising a pad (151), a plurality of regularly arranged buffer rods (152), and a fixed sleeve (153) corresponding to the buffer rods (152), the fixed sleeve (153) being fixed to the upper and lower side walls of the corresponding movable cavity (13), one end of the buffer rod (152) extending into the corresponding fixed sleeve (153), and the other end being fixed to the corresponding pad (151), and a spring (154) for buffering is provided in the fixed sleeve (153).

4. The energy storage fan according to claim 3, characterized in that: The auxiliary fan structure (32) comprises a cross bar (321) whose inner end is fixed to the outer wall of the rotating ring structure (31), and an auxiliary fan (322) arranged at the outer end of the cross bar (321), wherein the auxiliary fan (322) and the main fan (22) are oriented in the same direction.

5. The energy storage fan according to claim 4, characterized in that: The two fixed pulleys (362) are respectively arranged at the upper and lower ends of the installation tube (361); one end of the steel cable (363) is fixed to the counterweight (341), and the other end sequentially passes through the rope groove (131) on the corresponding side, the wall of the installation tube (361), and passes through the upper side of the upper fixed pulley (362), passes through the inner side of the lower fixed pulley (362), passes out from the outer side, and passes through the corresponding side limit block (312), the ring wall of the rotating ring (311) and the cross bar (321) until it is fixed to the side wall of the rotating shaft of the auxiliary fan (322).

6. The energy storage fan according to claim 5, characterized in that: A clamping block (364) is provided in the middle of the upper and lower outer walls of the installation cylinder (361), and a clamping groove (133) corresponding to the position and size of the clamping block (364) is provided on the upper and lower groove walls of the movable cylinder groove (132).

7. A method for using an energy storage fan, using the energy storage fan according to claim 6, characterized in that: The following steps are involved: S1. When in use, the main fan (22) is driven to rotate by the wind, and the speed is increased by the speed increasing gearbox (24) to drive the rotor of the generator (25) to rotate to generate electricity and store energy; S2. When the direction of the main fan (22) needs to be adjusted, the yaw motor inside the yaw system (23) is started to drive the nacelle (21) to rotate, so that the main fan (22) faces the wind again; S3. When the cabin (21) rotates, the connecting rod (35) drives the rotating ring (311) to rotate synchronously, thereby driving the cross rod (321) to rotate, thereby causing the auxiliary fan (322) to rotate synchronously with the main fan (22) to adjust the headwind; S4. When the wind force is too strong, the auxiliary fan (322) will be blown to rotate, and then the steel cable (363) will be rolled up, and the counterweight (341) will be pulled up under the transmission of the fixed pulley (362). The upwardly moving counterweight (341) drives the upper piston (343) to push the cooling water in the upper water chamber (14) through the upper sliding rod (342), so that the cooling water continuously flows from the inner tube (333) to the outer tube (331) and finally enters the lower water chamber (12). The cooling water can cool the speed increasing gear box (24) by passing through the spiral tube (332); S5. As the counterweight (341) is continuously pulled up, the kinetic energy of the rotation of the auxiliary fan (322) is converted into the gravitational potential energy of the counterweight (341) for storage. As the wind force gradually weakens, the counterweight (341) slowly falls down and drives the lower piston (343) to move downward via the lower sliding rod (342), thereby pressing the cooling water in the lower water chamber (12) back into the upper water chamber (14).

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