Heat dissipation device of wind driven generator

Abstract

The invention discloses a heat dissipation device of a wind driven generator, which relates to the technical field of wind power generation and comprises a first barrel fixedly connected to the bottom of a case of the wind driven generator, a liftable second barrel is rotatably connected to the outer side surface of the first barrel, and an air pipe is fixedly connected to the top of the inner side surface of the second barrel. The air pipe penetrates through the top of the first barrel and extends into the first barrel, the end, located on the first barrel, of the air pipe is fixedly connected with a piston plate attached to the inner side face of the first barrel, and an air outlet is formed in the middle of the piston plate. According to the wind driven generator, through cooperative arrangement of the first barrel, the second barrel and the piston plate, the effect of preventing dust from entering the wind driven generator is better when hot air in the wind driven generator is exhausted.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and more particularly to a heat dissipation device for a wind power generator. Background Art

[0002] With the growing global demand for renewable energy, wind power generation has become one of the important clean energy sources. As the core component of the wind power generation system, the operation stability and efficiency of the wind turbine generator (WTG) directly affect the performance of the entire wind power system. During the operation of the wind turbine generator, the internal temperature of the generator will rise due to mechanical friction, resistance loss caused by current passing through the winding, and other reasons. Excessive temperature will not only reduce the efficiency of the generator, but also accelerate the aging of the insulation material and shorten the service life of the generator. Therefore, effective heat dissipation technology is crucial to ensure the long-term stable operation of the wind turbine.

[0003] At present, the common method in the market is to introduce external cold air into the generator through a fan, take away the heat and then discharge it. This heat dissipation method is simple and low-cost, but it is easy to cause dust and moisture accumulation in high humidity or dusty environments, affecting the heat dissipation effect.

[0004] Therefore, it is necessary to propose a wind turbine heat dissipation device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the fan has a poor heat dissipation effect when dissipating heat for a wind turbine.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A heat dissipation device for a wind turbine generator, comprising a first cylinder body fixedly connected to the bottom of a wind turbine generator case, a second cylinder body that can be raised and lowered is rotatably connected to the outer side of the first cylinder body, an air duct is fixedly connected to the top of the inner side of the second cylinder body, the air duct passes through the top of the first cylinder body and extends into the first cylinder body, and a piston plate that fits the inner side of the first cylinder body is fixedly connected to the end of the air duct located in the first cylinder body, and an air outlet hole is opened in the middle of the piston plate; A second one-way air inlet valve is provided at the upper end of the second cylinder, a first one-way air inlet valve is provided at the outer side surface of the first cylinder close to the bottom of the wind turbine chassis, the first one-way air inlet valve is connected to an air duct, an end of the air duct away from the first one-way air inlet valve is located at the top of the inner side surface of the first cylinder, and a third one-way air inlet valve is provided on the outside of the air duct.

[0007] Furthermore, an exhaust column which can rotate with the rotation of the second cylinder is arranged at the bottom of the inner side of the first cylinder, and air guide holes are symmetrically opened on one side of the exhaust column, an air outlet is opened in the middle of the exhaust column, and the air outlet end of the air guide hole in the exhaust column is located at the air outlet.

[0008] Furthermore, a cylindrical groove is formed at the upper end of the exhaust column, and a pressing rod inserted into the cylindrical groove is fixedly connected to the lower end of the piston plate.

[0009] Furthermore, the bottom of the wind turbine box is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to a connecting plate, the middle part of the connecting plate is rotatably connected to a connecting rod, and the lower end of the connecting rod is fixedly connected to the upper end surface of the second cylinder; A motor is fixedly connected to the bottom of the wind turbine box, the output shaft of the motor is fixedly connected to a mounting shaft, the outer side of the mounting shaft is fixedly connected to a gear, the outer side of the second cylinder is fixedly connected to a gear ring, and the gear ring is always meshed with the gear.

[0010] Furthermore, a locking mechanism is provided at the upper end of the exhaust column. When the electric push rod is retracted to the lower limit position, the locking mechanism is locked into the piston plate. When the electric push rod is extended to the upper limit position, the locking mechanism is unlocked from the piston plate.

[0011] Furthermore, the locking mechanism includes a locking assembly and an unlocking assembly, the locking assembly includes a square block fixedly connected to the upper end of the exhaust column, a right-angled trapezoidal block symmetrically elastically slidably connected to the upper end of the square block, the acute angle of the right-angled trapezoidal block is located at the lower end, and a plug-in groove corresponding to the square block is formed through the piston plate, and sliding grooves for plugging the right-angled trapezoidal block are connected on both sides of the plug-in groove; The unlocking assembly includes a lower pressure plate slidably connected to the upper end of the piston plate and an extrusion rod fixedly connected to the lower end of the lower pressure plate. The extrusion rod is slidably connected in the sliding groove, and the extrusion rod slides downward to drive the right-angled trapezoidal block to move into the square block.

[0012] Furthermore, a cavity is symmetrically opened at the upper end of the square block, a second spring is arranged in the cavity, and two ends of the second spring are respectively connected to the right-angle trapezoidal block and the inner wall of the cavity.

[0013] Furthermore, the end angle of the lower end of the extrusion rod toward the plug-in slot is set to a first inclined surface parallel to the hypotenuse of the right-angled trapezoidal block, the upper end of the piston plate between the sliding slot and the plug-in slot is set to a second inclined surface staggered with the first inclined surface, and the acute angle of the right-angled trapezoidal block is a chamfer.

[0014] Furthermore, a sunken groove is formed in the square block at the upper end of the right-angled trapezoidal block, and a protrusion is fixedly connected to one side of the extrusion rod facing the plug-in groove, and the protrusion can move downward along the sunken groove and squeeze the right-angled trapezoidal block to move.

[0015] Furthermore, a partition is fixedly connected to the middle of the plug-in slot, a third spring is fixedly connected to the upper end of the partition, and the upper end of the third spring is fixedly connected to the lower end of the lower pressure plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves better effect of preventing dust from entering when discharging hot air in the wind turbine generator through the coordinated arrangement of the first cylinder, the second cylinder, a plurality of one-way air inlet valves and the piston plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 It is a first cross-sectional schematic diagram of the structure of the present invention; Figure 3 is a second cross-sectional schematic diagram of the structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram at point A in the middle.

[0018] Figure numerals: 1, bottom of wind turbine box; 2, first cylinder; 3, first one-way air inlet valve; 4, air duct; 5, second cylinder; 6, gear ring; 7, second one-way air inlet valve; 8, air duct; 9, third one-way air inlet valve; 10, piston plate; 11, air outlet; 12, lower pressure rod; 13, exhaust column; 14, wind shield; 15, air guide hole; 16, air outlet; 17, cylindrical groove; 18, first limit groove; 19, top plate; 20, first spring; 21, electric push rod; 22. Connecting plate; 23. Connecting rod; 24. Stabilizing rod; 25. Motor; 26. Mounting shaft; 27. Gear; 28. Square block; 29. ​​Cavity; 30. Second spring; 31. Right-angle trapezoidal block; 32. Chamfer; 33. Insertion slot; 34. Sliding slot; 35. Lower pressure plate; 36. Extrusion rod; 37. First inclined plane; 38. Protrusion; 39. Limiting block; 40. Second limiting slot; 41. Partition; 42. Third spring; 43. Second inclined plane; 44. Indented slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-4 , a heat dissipation device for a wind turbine generator, used for discharging hot air inside the wind turbine generator, and not easy to cause external dust to enter, specifically comprising a first cylinder 2 fixedly connected to the bottom 1 of the wind turbine case, the first cylinder 2 is fixed to the bottom 1 of the wind turbine case by bolts, the outer side of the first cylinder 2 is rotatably connected to a liftable second cylinder 5, the top of the inner side of the second cylinder 5 is fixedly connected to an air duct 8, the air duct 8 passes through the top of the first cylinder 2 and extends into the first cylinder 2, and the end of the air duct 8 located in the first cylinder 2 is fixedly connected to a piston plate 10 that fits the inner side of the first cylinder 2, and an air outlet 11 is opened in the middle of the piston plate 10, which is connected to the end of the air duct 8 for exhaust; A second one-way air intake valve 7 is provided at the upper end of the second cylinder 5, and a first one-way air intake valve 3 is provided on the outer side surface of the first cylinder 2 close to the bottom 1 of the wind turbine chassis. The first one-way air intake valve 3 is connected to an air duct 4, and one end of the air duct 4 away from the first one-way air intake valve 3 is located at the top of the inner side surface of the first cylinder 2. In addition, the positions of the first one-way air intake valve 3 and the air duct 4 can also be replaced, so that the first one-way air intake valve 3 is located at the top of the inner side surface of the first cylinder 2. A plurality of third one-way air intake valves 9 are provided on the outside of the air duct 8. When the air duct 8 moves up and down, it is ensured that there are third one-way air intake valves 9 between the second cylinder 5 and the first cylinder 2, and between the first cylinder 2 and the piston plate 10.

[0021] Specific, combined Figure 1 and Figure 2 As shown, an exhaust column 13 is provided at the bottom of the inner side of the first cylinder 2 and can rotate with the rotation of the second cylinder 5. The upper end of the exhaust column 13 can be hung on the lower end of the first cylinder 2 to avoid separation from the first cylinder 2. A wind guide hole 15 is symmetrically opened on one side of the exhaust column 13. The wind guide hole 15 is set to be inclined downward, that is, the gas enters from the high end and exits from the low end. Figure 1 As shown, the position pointed by 15 is the high end. Figure 2 As shown, the position pointed by 15 is the low end, an air outlet 16 is provided in the middle of the exhaust column 13, and the lower end of the air guide hole 15 in the exhaust column 13 is located at the lower end of the air outlet 16, thereby increasing the flow rate at the lower end of the air outlet 16 to promote the discharge of gas.

[0022] In addition, in order to prevent external gas from affecting the discharge of gas in the air outlet 16, a wind shield 14 is fixedly connected to the lower end of the exhaust column 13 located on one side of the air guide hole 15 to ensure that the gas in the air outlet 16 can only be affected by the gas flowing out of the air guide hole 15.

[0023] Specific, combined Figure 2As shown in the figure, a cylindrical groove 17 is opened at the upper end of the exhaust column 13. The lower end of the piston plate 10 is fixedly connected with a pressing rod 12 inserted into the cylindrical groove 17. The pressing rod 12 is always located in the cylindrical groove 17 to prevent the exhaust column 13 from rotating under the action of external force and changing the position of the air guiding hole 15. In order to prevent the pressing rod 12 from driving the exhaust column 13 to move upward when the pressing rod 12 moves upward, first limiting grooves 18 communicating with the cylindrical groove 17 are opened on both sides of the cylindrical groove 17. A top plate 19 is slidably connected in the cylindrical groove 17 and the first limiting grooves 18. The cross-sections of the cylindrical groove 17, the first limiting grooves 18 as a whole and the top plate 19 are all in the shape of a Chinese character 'zhong'. The lower end of the top plate 19 is fixedly connected with a first spring 20. The lower end of the first spring 20 is fixedly connected to the lower end inner wall of the cylindrical groove 17. The exhaust column 13 is pressed against the lower end of the first cylinder 2 by the resilience of the first spring 20.

[0024] Specifically, in combination with Figure 1 and Figure 2 As shown in the figure, an electric push rod 21 is fixedly connected to the bottom of the wind turbine casing 1. The output end of the electric push rod 21 is fixedly connected with a connecting plate 22. The middle part of the connecting plate 22 is rotatably connected with a connecting rod 23. The lower end of the connecting rod 23 is fixedly connected to the upper end face of the second cylinder 5, so as to achieve the effect of driving up and down movement. A motor 25 is fixedly connected to the bottom of the wind turbine casing 1. The motor 25 is a servo motor, and the rotation angle of the exhaust column 13 can be accurately controlled by controlling the number of rotation turns of the motor 25. The output shaft of the motor 25 is fixedly connected with a mounting shaft 26. A gear 27 is fixedly connected to the outer side of the mounting shaft 26. A toothed ring 6 is fixedly connected to the outer side of the second cylinder 5. The toothed ring 6 is always engaged with the gear 27, that is, as the electric push rod 21 expands and contracts, the toothed ring 6 can move up and down along the gear 27 to avoid the two from disengaging, so as to achieve the effect of driving the second cylinder 5 to rotate. A stabilizing rod 24 is fixedly connected to the outer side of the fixed end of the electric push rod 21. The middle part of the outer side of the mounting shaft 26 is rotatably connected to the end of the stabilizing rod 24 far from the electric push rod 21.

[0025] Specifically, in combination with Figure 2-4 As shown in the figure, in order to realize the storage of the exhaust column 13 and reduce the entry of dust, a locking mechanism is arranged at the upper end of the exhaust column 13. When the electric push rod 21 contracts to the lower limit position, the locking mechanism locks into the piston plate 10. When the electric push rod 21 extends to the upper limit position, the locking mechanism unlocks from the piston plate 10.

[0026] Specifically, in combination with Figure 2-4As shown, the locking mechanism includes a locking component and an unlocking component, the locking component includes a square block 28 fixedly connected to the edge of the outer peripheral surface of the upper end of the exhaust column 13, and a right-angled trapezoidal block 31 symmetrically elastically slidably connected to the upper end of the square block 28, the acute angle of the right-angled trapezoidal block 31 is located at the lower end, and the inclined surface and the acute angle of the right-angled trapezoidal block 31 are opposite to each other, and a plug-in groove 33 with the same size and corresponding position as the square block 28 is opened on the edge of the outer peripheral surface of the piston plate 10, and sliding grooves 34 for plugging the right-angled trapezoidal block 31 are connected on both sides of the plug-in groove 33; The unlocking assembly includes a lower pressure plate 35 slidably connected to the upper end of the piston plate 10 and an extrusion rod 36 fixedly connected to the lower end of the lower pressure plate 35. The extrusion rod 36 is slidably connected in the sliding groove 34. The extrusion rod 36 slides downward to fit the inclined surface of the right-angled trapezoidal block 31. Continuing to slide downward can drive the right-angled trapezoidal block 31 to move into the square block 28.

[0027] In order to prevent the lower pressure plate 35 from detaching from the plug-in slot 33, a limiting block 39 is fixedly connected to the side of the extrusion rod 36 away from the plug-in slot 33, and a second limiting slot 40 connected to the sliding slot 34 is opened on the piston plate 10. The limiting block 39 is slidably connected in the second limiting slot 40, that is, it is used to limit the up and down movement distance of the lower pressure plate 35.

[0028] Specific, combined Figure 4 As shown, a cavity 29 is symmetrically opened at the upper end of the square block 28, and a second spring 30 is arranged in the cavity 29. The two ends of the second spring 30 are respectively connected to the right-angled trapezoidal block 31 and the square block 28. When the right-angled trapezoidal block 31 is subjected to an external force, the right-angled trapezoidal block 31 will be squeezed, so that the right-angled trapezoidal block 31 compresses the second spring 30, thereby causing the right-angled trapezoidal block 31 to move into the cavity 29; Specific, combined Figure 4 As shown, in order to facilitate the extrusion of the right-angled trapezoidal block 31 and prevent the right-angled trapezoidal block 31 from being stuck on the piston plate 10 between the plug-in slot 33 and the sliding slot 34, the end angle of the lower end of the extrusion rod 36 facing the plug-in slot 33 is set to a first inclined surface 37 parallel to the hypotenuse of the right-angled trapezoidal block 31, and the upper end of the piston plate 10 between the sliding slot 34 and the plug-in slot 33 is set to a second inclined surface 43 staggered with the first inclined surface 37, and the acute angle of the right-angled trapezoidal block 31 is a chamfer 32, that is, when the acute angle of the right-angled trapezoidal block 31 is away from the end of the plug-in slot 33 and is flush with the piston plate 10 between the sliding slot 34 and the plug-in slot 33, it will slowly fit the second inclined surface 43 under the action of the chamfer 32.

[0029] The square block 28 at the upper end of the right-angled trapezoidal block 31 is provided with an indented groove 44, and the extrusion rod 36 is fixedly connected with a protrusion 38 on one side facing the insertion groove 33. The protrusion 38 can move downward along the indented groove 44 and squeeze the right-angled trapezoidal block 31 to move. The protrusion 38 squeezes the inclined surface of the right-angled trapezoidal block 31 again, thereby driving the chamfer 32 to disengage from the second inclined surface 43 and move into the square block 28, thereby unlocking the square block 28.

[0030] Specific, combined Figure 4 As shown, a partition 41 is fixedly connected to the middle of the plug-in slot 33, a third spring 42 is fixedly connected to the upper end of the partition 41, and the upper end of the third spring 42 is fixedly connected to the lower end of the lower pressure plate 35. The setting of the third spring 42 facilitates the automatic resetting of the lower pressure plate 35.

[0031] All the above-mentioned gas passage locations are provided with seals.

[0032] Working principle: The telescopic position of the electric push rod 21 includes an upper limit position, an exhaust position and a lower limit position. When exhausting, first adjust the position of the air guide hole 15 to match the wind direction, and start the control motor 25 to drive the installation shaft 26 and the gear 27 to rotate, and the gear 27 drives the gear ring 6 to rotate, and the gear ring 6 drives the second cylinder 5, the air duct 8 and the piston plate 10 to rotate, and then the piston plate 10 drives the exhaust column 13 to rotate, so that the wind passes through the air guide hole 15 and gathers at the lower end of the air outlet 16, thereby promoting the flow rate of the wind coming out of the air outlet 16; The wind comes out of the air outlet 16 including the following actions: by controlling the electric push rod 21 to extend and retract, the connecting plate 22 moves up and down. When the electric push rod 21 contracts, the second cylinder 5 will squeeze the gas between the second cylinder 5 and the upper end of the first cylinder 2, so that the gas enters the air duct 8 through the third one-way air inlet valve 9 and is discharged from the air outlet 16. At the same time, negative pressure is formed between the upper end of the piston plate 10 and the upper end of the first cylinder 2, which will drive the gas in the wind turbine to enter the air duct 4 through the first one-way air inlet valve 3, and then enter between the upper end of the piston plate 10 and the upper end of the first cylinder 2; When the electric push rod 21 is extended, negative pressure is formed between the second cylinder 5 and the upper end of the first cylinder 2, and the gas in the wind turbine enters between the second cylinder 5 and the upper end of the first cylinder 2 through the second one-way air inlet valve 7. At this time, the gas between the upper end of the piston plate 10 and the upper end of the first cylinder 2 will be compressed, enter the air duct 8 through the third one-way air inlet valve 9, and then be discharged through the air outlet 11; When the electric push rod 21 is extended, under the action of the elastic force of the first spring 20, the first spring 20 will press against the lower end of the exhaust column 13, thereby preventing it from being moved upward by the push rod 12; When the electric push rod 21 shrinks from the exhaust position to the lower limit position, the square block 28 will be inserted into the insertion groove 33. With the extrusion of the piston plate 10, the right-angled trapezoidal block 31 will be squeezed into the cavity 29. When the electric push rod 21 shrinks to the lower limit position, the lower end of the partition plate 41 fits the upper end of the square block 28. The right-angled trapezoidal block 31 moves into the sliding groove 34 under the action of the second spring 30, completing the locking between the piston plate 10 and the exhaust column 13, so that the electric push rod 21 can drive the square block 28 to move into the insertion groove 33 when it is extended; When the electric push rod 21 extends from the exhaust position to the upper limit position, the upper end of the lower pressure plate 35 will be squeezed by the upper end of the first cylinder 2, so that the lower pressure plate 35 squeezes the third spring 42, thereby driving the squeezing rod 36 to slide along the sliding groove 34, so that it fits the inclined surface of the right-angled trapezoidal block 31, thereby squeezing the right-angled trapezoidal block 31 into the cavity 29, and the chamfer 32 will begin to fit with the second inclined surface 43. As the squeezing rod 36 moves downward, the protrusion 38 will slide along the sunken groove 44 and fit the inclined surface of the right-angled trapezoidal block 31, thereby squeezing the right-angled trapezoidal block 31, so that the right-angled trapezoidal block 31 moves completely to the middle, and at this time, under the action of the rebound force of the first spring 20, the exhaust column 13 will be driven to move downward, thereby causing the square block 28 to disengage from the plug-in slot 33, completing the unlocking between the piston plate 10 and the exhaust column 13.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A heat dissipation device for a wind turbine, characterized in that: It comprises a first cylinder body fixedly connected to the bottom of the wind turbine box, the outer side of the first cylinder body is rotatably connected to the second cylinder body that can be raised and lowered, the top of the inner side of the second cylinder body is fixedly connected to an air duct, the air duct passes through the top of the first cylinder body and extends into the first cylinder body, and the end of the air duct located in the first cylinder body is fixedly connected to a piston plate that fits the inner side of the first cylinder body, and the middle of the piston plate is provided with an air outlet hole; A second one-way air inlet valve is provided at the upper end of the second cylinder, a first one-way air inlet valve is provided at the outer side surface of the first cylinder close to the bottom of the wind turbine chassis, the first one-way air inlet valve is connected to an air duct, an end of the air duct away from the first one-way air inlet valve is located at the top of the inner side surface of the first cylinder, and a third one-way air inlet valve is provided on the outside of the air duct.

2. A wind turbine heat sink according to claim 1, characterized in that: An exhaust column is arranged at the bottom inner side of the first cylinder and can rotate along with the rotation of the second cylinder. Air guide holes are symmetrically provided on one side of the exhaust column. An air outlet is provided in the middle of the exhaust column. The air outlet end of the air guide hole in the exhaust column is located at the air outlet.

3. A heat dissipation device for a wind turbine generator according to claim 2, characterized in that: A cylindrical groove is formed at the upper end of the exhaust column, and a pressing rod inserted into the cylindrical groove is fixedly connected to the lower end of the piston plate.

4. A heat dissipation device for a wind turbine generator according to claim 3, characterized in that: The bottom of the wind turbine box is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a connecting plate, the middle part of the connecting plate is rotatably connected with a connecting rod, and the lower end of the connecting rod is fixedly connected to the upper end surface of the second cylinder; A motor is fixedly connected to the bottom of the wind turbine box, the output shaft of the motor is fixedly connected to a mounting shaft, the outer side of the mounting shaft is fixedly connected to a gear, the outer side of the second cylinder is fixedly connected to a gear ring, and the gear ring is always meshed with the gear.

5. A heat dissipation device for a wind turbine generator according to claim 4, characterized in that: A locking mechanism is provided at the upper end of the exhaust column. When the electric push rod is retracted to the lower limit position, the locking mechanism is locked into the piston plate. When the electric push rod is extended to the upper limit position, the locking mechanism is unlocked from the piston plate.

6. A heat dissipation device for a wind turbine generator according to claim 5, characterized in that: The locking mechanism includes a locking assembly and an unlocking assembly, wherein the locking assembly includes a square block fixedly connected to the upper end of the exhaust column, and a right-angled trapezoidal block symmetrically elastically slidably connected to the upper end of the square block, wherein the acute angle of the right-angled trapezoidal block is located at the lower end, and a plug-in groove corresponding to the square block is formed through the piston plate, and sliding grooves for plugging the right-angled trapezoidal block are connected on both sides of the plug-in groove; The unlocking assembly includes a lower pressure plate slidably connected to the upper end of the piston plate and an extrusion rod fixedly connected to the lower end of the lower pressure plate. The extrusion rod is slidably connected in the sliding groove, and the extrusion rod slides downward to drive the right-angled trapezoidal block to move into the square block.

7. A heat dissipation device for a wind turbine generator according to claim 6, characterized in that: A cavity is symmetrically opened at the upper end of the square block, a second spring is arranged in the cavity, and two ends of the second spring are respectively connected to the right-angle trapezoidal block and the inner wall of the cavity.

8. A heat dissipation device for a wind turbine generator according to claim 7, characterized in that: The end angle of the lower end of the extrusion rod toward the plug-in slot is set as a first inclined surface parallel to the hypotenuse of the right-angled trapezoidal block, the upper end of the piston plate between the sliding slot and the plug-in slot is set as a second inclined surface staggered with the first inclined surface, and the acute angle of the right-angled trapezoidal block is a chamfer.

9. A heat dissipation device for a wind turbine generator according to claim 8, characterized in that: The square block at the upper end of the right-angled trapezoidal block is provided with an indented groove, and a protrusion is fixedly connected to one side of the extrusion rod facing the plug-in groove. The protrusion can move downward along the indented groove and squeeze the right-angled trapezoidal block to move.

10. A heat dissipation device for a wind turbine generator according to claim 9, characterized in that: A partition is fixedly connected to the middle of the plug-in slot, a third spring is fixedly connected to the upper end of the partition, and the upper end of the third spring is fixedly connected to the lower end of the lower pressure plate.

Images