Heat dissipation device of wind driven generator

Abstract

The invention belongs to the technical field of wind power generation, and particularly relates to a wind driven generator heat dissipation device which comprises a main body mechanism which comprises a rod body and a cabin body arranged at the end of the rod body. The power generation box is arranged on the cabin body, and the power generation box is used for providing power for the whole device; a heat dissipation liquid guide pipe, a heat dissipation cover, a flow guide impeller, a driving impeller, a heat exchange pipe, a heat dissipation impeller and a rotating shaft are arranged, when heat is generated in the working process of the power generation box, the heat dissipation liquid guide pipe, the heat dissipation cover, the flow guide impeller, the driving impeller, the heat exchange pipe, the heat dissipation impeller and the rotating shaft are arranged, the heat dissipation cover is welded to the left end of the top of the cabin body in a sealed mode, and a fixing frame is arranged at the right end of the top of the heat dissipation cover. The heat exchange pipes can adsorb heat generated by the power generation box to achieve the water-cooling cooling capacity, cooling liquid in the heat exchange pipes can expand after being heated, the heat generated by the power generation box is used for driving cooling water to flow for heat dissipation, and the heat dissipation requirement in the equipment working process is met.

Description

Technical Field

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

[0002] With the rapid development of clean energy in recent years, the annual growth rate of global renewable energy utilization has reached 25%. The utilization of renewable energy is becoming more and more common, with the power industry as the leading development carrier. As a safe and clean renewable energy, wind energy is increasingly valued by people. The principle of wind power generation is to use wind power to drive the fan impeller to rotate, and then increase the rotation speed through the transmission mechanism, and drive the stator and rotor to rotate to drive the generator to generate electricity. For the current wind power generation technology, according to different wind turbine manufacturing processes, when the wind speed reaches a breeze speed of about 3m / s (the degree of breeze), it can start to generate electricity, thereby generating power generation benefits.

[0003] A wind turbine is a device that converts the kinetic energy of wind into electrical energy. It is mainly composed of a wind rotor and a generator. The wind rotor rotates under the action of wind, converting the kinetic energy of wind into mechanical energy, which in turn drives the generator to generate electricity. Wind turbines also include components such as a rectifier, a tower, a speed limit safety mechanism, and an energy storage device. Wind power generation is environmentally friendly and renewable, and is a clean and pollution-free energy source.

[0004] At present, during the long-term operation of a wind turbine, due to the space limitation in the generator cabin, insufficient heat dissipation may occur, resulting in heat accumulation. When the temperature continues to rise beyond a certain range, it will have an adverse effect on various electrical equipment in the wind turbine, causing a fault alarm. Therefore, we propose a wind turbine heat dissipation device and a wind turbine generator set. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the fact that the existing generator compartment is subject to space limitations and is prone to the problem of insufficient heat dissipation leading to heat accumulation, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide a heat dissipation device for a wind turbine.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a main body mechanism, comprising a rod body and a cabin body arranged at the end of the rod body; a generator box, the generator box is arranged on the cabin body, and the generator box is used to provide power for the entire device; a heat dissipation cover is sealed and welded at the left end of the top of the cabin body, a fixing frame is arranged at the right end of the top of the heat dissipation cover, a fixing cover is arranged at the lower end of the left side of the fixing frame, a lower rotating disk is movably connected to the lower end of the inner cavity of the fixing cover, a first rotating shaft that passes through the bottom of the fixing cover is fixedly connected to the bottom of the lower rotating disk, a guide impeller located in the heat dissipation cover is arranged at the lower end of the outer surface of the first rotating shaft, a liquid passing seat is connected to the upper end of the left side of the heat dissipation cover, a heat dissipation liquid guide pipe is connected to the lower end of the right side of the heat dissipation cover, and a fixed shell is connected to the bottom of the heat dissipation liquid guide pipe, and a fixed shell is connected to the middle end of the fixed shell through a bearing. The left and right ends of the outer surface of the rotating shaft are both equipped with heat dissipation impellers, and the outer surface of the generator box is wound with a rear heat exchange tube.

[0009] As a preferred solution of the wind turbine heat dissipation device of the present invention, a cabin is fixedly installed on the top of the rod body, a generator box is fixedly installed on the left end of the inner cavity of the cabin, and a main rotating impeller is fixedly connected to the output end of the generator box.

[0010] As a preferred solution of the heat dissipation device for a wind turbine generator of the present invention, the fixed shell is a hollow cylindrical structure.

[0011] As a preferred solution of the wind turbine heat sink of the present invention, the heat exchange tube is made of metal copper, and the longitudinal section of the heat exchange tube is rectangular.

[0012] As a preferred solution of the wind turbine heat dissipation device described in the present invention, the left end of the heat exchange tube passes through the top of the cabin and is connected to the bottom of the liquid-passing seat, and the right end of the heat exchange tube is connected to the middle end of the bottom of the fixed shell.

[0013] As a preferred solution of the wind turbine heat dissipation device described in the present invention, the upper end of the fixed frame is movably connected to a rotating rod through a bearing, an auxiliary rotating impeller is fixedly installed on the left end of the rotating rod, and a second gear is fixedly connected to the right end of the rotating rod.

[0014] As a preferred solution of the wind turbine heat dissipation device described in the present invention, the upper end of the inner cavity of the fixed cover is movably connected with an upper rotating disk, the front and rear ends of the bottom of the upper rotating disk are provided with connecting slots, the front and rear ends of the top of the lower rotating disk are provided with grooves corresponding to the connecting slots, the bottom of the inner side of the groove is fixedly connected with a spring, and the top of the spring is fixedly connected with a movable block that slides in the groove.

[0015] As a preferred solution of the heat dissipation device for a wind turbine generator of the present invention, the longitudinal section of the connecting slot is a right triangle, and the connecting slot and the upper end of the movable block are matched.

[0016] As a preferred solution of the wind turbine heat dissipation device described in the present invention, the top of the upper rotating disk is fixedly connected to a second rotating shaft that passes through the top of the fixed cover, and the upper end of the second rotating shaft is fixedly connected to a first gear that meshes with the second gear.

[0017] As a preferred solution of the heat dissipation device for a wind turbine generator of the present invention, wherein: the first rotating shaft is used to drive the guide impeller to rotate, and the guide impeller is used to drive the rotating disk to rotate.

[0018] Beneficial effects of the present invention: Through the arrangement of the heat dissipation liquid guide pipe, the heat dissipation cover, the guide impeller, the driving impeller, the heat exchange pipe, the heat dissipation impeller and the rotating shaft, when the heat is generated during the operation of the power generation box, the heat exchange pipe can absorb the heat generated by the power generation box to achieve the ability of water cooling, and the cooling liquid in the heat exchange pipe will expand after being heated, and the expanded cooling liquid can enter the liquid passing seat through the left end of the heat exchange pipe, and then, after entering the heat dissipation cover, the expanded liquid in the liquid passing seat can drive the guide impeller and the first rotating shaft to rotate, and because the rotating guide impeller can mix and disperse the cooling liquid that expands after entering, in the process of the mixed and dispersed cooling liquid flowing through the heat dissipation liquid guide pipe, it can The cooling liquid is dissipated, and the cooling liquid after the heat dissipation will enter a contraction state from a collision state, and then negative pressure will be generated in the flow process, further providing flow power for the expanded cooling liquid, and when the contracted cooling liquid enters the fixed shell, it can impact the driving impeller, and then the rotating driving impeller can drive the heat dissipation impeller to rotate, and then the generator box can be cooled by air inside the cabin, and then the cooling water entering the fixed shell can flow back to the right end of the heat exchange tube again, so as to realize the recycling of the cooling water without affecting the normal operation of the wind power generation equipment, and use the heat generated by the generator box to drive the flow and heat dissipation of the cooling water to ensure the heat dissipation needs of the equipment during operation.

[0019] Through the arrangement of the fixed frame, the rotating rod, the auxiliary rotating impeller, the second rotating shaft, the second gear, the second gear, the spring, the groove, the connecting slot, the movable block, the second rotating shaft and the first gear, when the auxiliary rotating impeller is affected by external wind force, the mechanical driving capacity can be increased, and the rotating guide impeller can accelerate the flow speed of the cooling water body, thereby improving the water-cooling and air-cooling efficiency of the device. If in a windless state, when the guide impeller drives the lower rotating disk to rotate, the movable block can retract into the groove as the lower rotating disk rotates and frequently compress the spring. At this time, the upper end of the movable block cannot be connected with the connecting slot, and then in a windless state, the guide impeller will not drive the second rotating shaft to rotate, thereby avoiding the power consumption of the cooling water body driven by thermal expansion and contraction, which is beneficial to people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 The figure is a schematic diagram of the overall structure of the heat dissipation device for a wind turbine generator according to the present invention.

[0022] Figure 2 The schematic diagram of the matching structure of the cabin and the rotating impeller of the wind turbine heat dissipation device of the present invention is shown in FIG. Figure 1 .

[0023] Figure 3 The schematic diagram of the matching structure of the cabin and the rotating impeller of the wind turbine heat dissipation device of the present invention is shown in FIG. Figure 2 .

[0024] Figure 4 It is a schematic diagram of the matching structure of the heat exchange tube and the fixed shell of the wind turbine heat dissipation device of the present invention.

[0025] Figure 5 It is a schematic diagram of the matching structure of the guide impeller and the second rotating shaft of the heat dissipation device of the wind turbine generator of the present invention.

[0026] Figure 6 It is a schematic diagram of the matching structure of the fixing frame and the second rotating shaft of the heat dissipation device of the wind turbine generator of the present invention.

[0027] Figure 7 It is a schematic diagram of the matching structure of the lower rotating disk and the upper rotating disk of the heat dissipation device of the wind turbine generator of the present invention.

[0028] Figure 8 The exploded structural diagram of the lower rotating disk and the upper rotating disk of the heat dissipation device of the wind turbine generator of the present invention.

[0029] In the figure: 100, main body; 101, rod body; 102, cabin body; 103, heat dissipation cover; 104, fixed frame; 105, fixed cover; 106, lower rotating disk; 107, first rotating shaft; 108, guide vane; 109, liquid passing seat; 110, heat dissipation liquid guide pipe; 112, rotating shaft; 113, heat dissipation impeller; 114, driving impeller; 115, heat exchange tube; 116, fixed shell; 117, main rotating impeller; 118, rotating rod; 119, auxiliary rotating impeller; 120, spring; 121, groove; 122, movable block; 123, upper rotating disk; 124, second rotating shaft; 200, generator box. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1, reference Figure 1 to Figure 2, which is the first embodiment of the present invention, provides a heat dissipation device for a wind turbine generator, including a main body 100, including a rod body 101 and a cabin body 102 arranged at the end of the rod body 101; a generator box 200, the generator box 200 is arranged on the cabin body 102, and the generator box 200 is used to provide power for the entire device; a heat dissipation cover 103 is sealed and welded at the left end of the top of the cabin body 102, a fixing frame 104 is arranged at the right end of the top of the heat dissipation cover 103, a fixing cover 105 is arranged at the lower end of the left side of the fixing frame 104, the lower end of the inner cavity of the fixing cover 105 is movably connected to a lower rotating disk 106, and the bottom of the lower rotating disk 106 is fixedly connected to a bottom of the fixing cover 105. The first rotating shaft 107 is provided at the lower end of the outer surface of the first rotating shaft 107. The guide impeller 108 located in the heat dissipation cover 103 is provided. The upper end of the left side of the heat dissipation cover 103 is connected with a liquid passing seat 109. The lower end of the right side of the heat dissipation cover 103 is connected with a heat dissipation liquid guide pipe 110. The bottom of the heat dissipation liquid guide pipe 110 is connected with a fixed shell 116. The middle end of the fixed shell 116 is movably connected with a rotating shaft 112 through a bearing. Heat dissipation impellers 113 are installed on the left and right ends of the outer surface of the rotating shaft 112. The outer surface of the rotating shaft 112 located in the fixed shell 116 is provided with a driving impeller 114. The outer surface of the power generation box 200 is wound with a rear heat exchange tube 115.

[0035] Specifically, the cabin 102 is fixedly installed on the top of the rod body 101 , the generator box 200 is fixedly installed on the left end of the inner cavity of the cabin 102 , and the output end of the generator box 200 is fixedly connected to the main rotating impeller 117 .

[0036] The fixed shell 116 is a hollow cylindrical structure.

[0037] Furthermore, the heat exchange tube 115 is made of metal copper, and the longitudinal section of the heat exchange tube 115 is rectangular.

[0038] It should be noted that, through the arrangement of the heat dissipation liquid guide pipe 110, the heat dissipation cover 103, the guide impeller 108, the driving impeller 114, the heat exchange tube 115, the heat dissipation impeller 113 and the rotating shaft 112, when the main rotating impeller 117 drives the generator box 200 to work, the ability of wind power generation can be realized. When the generator box 200 generates heat during operation, the heat exchange tube 115 can absorb the heat generated by the generator box 200 to achieve the ability of water cooling. The cooling liquid in the heat exchange tube 115 will expand after being heated, and the expanded cooling liquid can enter the liquid passing seat 109 through the left end of the heat exchange tube 115 (a one-way valve is arranged at the right end of the heat exchange tube 115). Then, after entering the heat dissipation cover 103, the expanded liquid in the liquid passing seat 109 can drive the guide impeller 108 and the first rotating shaft 107 to rotate. In addition, the rotating guide impeller 108 can absorb the expanded cooling liquid after entering. The liquids are mixed and dispersed. In the process of the mixed and dispersed cooling liquid flowing through the heat dissipation liquid guide tube 110, the cooling liquid can dissipate heat. The cooling liquid after dissipation will enter a contraction state from a collision state, and negative pressure will be generated in the flow process, further providing flow power for the expanded cooling liquid. When the contracted cooling liquid enters the fixed shell 116, it can impact the driving impeller 114, and the rotating driving impeller 114 can drive the heat dissipation impeller 113 to rotate, and then the generator box 200 can be cooled by air inside the cabin 102. Then, the cooling water entering the fixed shell 116 can flow back to the right end of the heat exchange tube 115 again, so as to realize the recycling of the cooling water without affecting the normal operation of the wind power generation equipment. The heat generated by the generator box 200 is used to drive the flow and heat dissipation of the cooling water, thereby ensuring the heat dissipation requirements of the equipment during operation.

[0039] Example 2, reference Figures 1 to 8 This embodiment is different from the first embodiment in that the left end of the heat exchange tube 115 passes through the top of the cabin 102 and is connected to the bottom of the liquid passing seat 109, and the right end of the heat exchange tube 115 is connected to the middle end of the bottom of the fixed shell 116.

[0040] Specifically, the upper end of the fixed frame 104 is movably connected to a rotating rod 118 via a bearing, the left end of the rotating rod 118 is fixedly mounted with an auxiliary rotating impeller 119, and the right end of the rotating rod 118 is fixedly connected with a second gear.

[0041] Furthermore, an upper rotating disk 123 is movably connected to the upper end of the inner cavity of the fixed cover 105, and connecting slots are provided at the front and rear ends of the bottom of the upper rotating disk 123, and grooves 121 corresponding to the connecting slots are provided at the front and rear ends of the top of the lower rotating disk 106, and a spring 120 is fixedly connected to the bottom of the inner side of the groove 121, and a movable block 122 that slides in the groove 121 is fixedly connected to the top of the spring 120.

[0042] Furthermore, the longitudinal section of the connecting slot is a right triangle, and the connecting slot and the upper end of the movable block 122 are matched.

[0043] Furthermore, a second rotating shaft 124 penetrating the top of the fixed cover 105 is fixedly connected to the top of the upper rotating disk 123 , and a first gear meshing with the second gear is fixedly connected to the upper end of the second rotating shaft 124 .

[0044] Furthermore, the first rotating shaft 107 is used to drive the guide vane 108 to rotate, and the guide vane 108 is used to drive the rotating disk to rotate.

[0045] It should be noted that, through the arrangement of the fixing frame 104, the rotating rod 118, the auxiliary rotating impeller 119, the second rotating shaft 124, the second gear, the second gear, the spring 120, the groove 121, the connecting slot, the movable block 122, the second rotating shaft 124 and the first gear, when the auxiliary rotating impeller 119 is affected by external wind force, it can drive the rotating rod 118 and the second gear to rotate, and when the second gear rotates, it can drive the second rotating shaft 124 and the upper rotating disk 123 to rotate under the cooperation of the meshing first gear. At this time, under the influence of the tensioning force of the spring 120, the upper end of the movable block 122 can be driven to engage with the inner side of the connecting slot, and then when the upper rotating disk 123 rotates, it can drive the lower rotating disk 106 and the first rotating shaft 107 to rotate through the engaging state at this time. When the first rotating shaft 107 rotates, it can drive the guide impeller 108 to rotate, and then under the influence of the cooling water body driven by thermal expansion and contraction, the ability of mechanical driving can be increased, and the rotating guide impeller 108 can accelerate the flow speed of the cooling water body, thereby improving the water-cooling and air-cooling efficiency of the device. If in a windless state, when the guide impeller 108 drives the lower rotating disk 106 to rotate, the movable block 122 can be retracted into the groove 121 as the lower rotating disk 106 rotates, and the spring 120 is frequently compressed. At this time, the upper end of the movable block 122 cannot be connected with the connecting slot, and then in a windless state, the guide impeller 108 will not drive the second rotating shaft 124 to rotate, thereby avoiding the power consumption of the cooling water body driven by thermal expansion and contraction, which is beneficial to people's use.

[0046] The rest of the structure is the same as that of Example 1.

[0047] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0048] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0049] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A heat dissipation device for a wind turbine, characterized in that: include, The main body mechanism (100) comprises a rod body (101) and a cabin body (102) arranged at the end of the rod body (101); A power generation box (200), the power generation box (200) being arranged on the cabin (102), and the power generation box (200) being used to provide power for the entire device; A heat dissipation cover (103) is sealed and welded to the left end of the top of the cabin (102); a fixing frame (104) is provided at the right end of the top of the heat dissipation cover (103); a fixing cover (105) is provided at the lower end of the left side of the fixing frame (104); a lower rotating disk (106) is movably connected to the lower end of the inner cavity of the fixing cover (105); a first rotating shaft (107) penetrating the bottom of the fixing cover (105) is fixedly connected to the bottom of the lower rotating disk (106); a guide impeller (108) located in the heat dissipation cover (103) is provided at the lower end of the outer surface of the first rotating shaft (107); and the heat dissipation cover (105) is provided with a plurality of guide impellers (108) disposed in the heat dissipation cover (103). 03) is connected to a liquid passing seat (109) at the upper end on the left side, and a heat dissipation liquid guide pipe (110) is connected to the lower end on the right side of the heat dissipation cover (103). The bottom of the heat dissipation liquid guide pipe (110) is connected to a fixed shell (116). The middle end of the fixed shell (116) is movably connected to a rotating shaft (112) through a bearing. Heat dissipation impellers (113) are installed on both left and right ends of the outer surface of the rotating shaft (112). A driving impeller (114) is provided on the outer surface of the rotating shaft (112) located in the fixed shell (116). A heat exchange tube (115) is wound around the outer surface of the power generation box (200).

2. The heat dissipation device for a wind turbine generator according to claim 1, characterized in that: A cabin (102) is fixedly mounted on the top of the rod body (101), a generator box (200) is fixedly mounted on the left end of the inner cavity of the cabin (102), and a main rotating impeller (117) is fixedly connected to the output end of the generator box (200).

3. The heat dissipation device for a wind turbine generator according to claim 2, characterized in that: The fixed shell (116) is a hollow cylindrical structure.

4. The heat dissipation device for a wind turbine generator according to claim 3, characterized in that: The heat exchange tube (115) is made of metal copper, and the longitudinal section of the heat exchange tube (115) is rectangular.

5. The heat dissipation device for a wind turbine generator according to claim 4, characterized in that: The left end of the heat exchange tube (115) passes through the top of the cabin (102) and is connected to the bottom of the liquid-passing seat (109), and the right end of the heat exchange tube (115) is connected to the middle end of the bottom of the fixed shell (116).

6. The heat dissipation device for a wind turbine generator according to claim 5, characterized in that: The upper end of the fixed frame (104) is movably connected to a rotating rod (118) via a bearing, an auxiliary rotating impeller (119) is fixedly mounted on the left end of the rotating rod (118), and a second gear is fixedly connected to the right end of the rotating rod (118).

7. The heat dissipation device for a wind turbine generator according to claim 6, characterized in that: An upper rotating disk (123) is movably connected to the upper end of the inner cavity of the fixed cover (105); connection slots are provided at both the front and rear ends of the bottom of the upper rotating disk (123); grooves (121) corresponding to the connection slots are provided at both the front and rear ends of the top of the lower rotating disk (106); a spring (120) is fixedly connected to the bottom of the inner side of the groove (121); and a movable block (122) that slides in the groove (121) is fixedly connected to the top of the spring (120).

8. The heat dissipation device for a wind turbine generator according to claim 7, characterized in that: The longitudinal section of the connecting slot is a right triangle, and the connecting slot and the upper end of the movable block (122) are matched.

9. The heat dissipation device for a wind turbine generator according to claim 8, characterized in that: The top of the upper rotating disk (123) is fixedly connected to a second rotating shaft (124) that passes through the top of the fixed cover (105); the upper end of the second rotating shaft (124) is fixedly connected to a first gear that meshes with a second gear.

10. The heat dissipation device for a wind turbine generator according to claim 9, characterized in that: The first rotating shaft (107) is used to drive the guide vane (108) to rotate, and the guide vane (108) is used to drive the rotating disk to rotate.

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