A small wind turbine

Abstract

The present invention discloses a small wind turbine generator, which relates to the field of wind turbine generators. The small wind turbine generator comprises a conversion mechanism, wherein the conversion mechanism comprises a nacelle, a sealing disk is provided on the top of the nacelle, a secondary shaft is fixedly mounted in the center of the top of the sealing disk, the conversion mechanism is used to convert mechanical energy into electrical energy, an adjustment mechanism is provided on the top of the secondary shaft, and three energy supply mechanisms are provided on the outer ring of the adjustment mechanism, the energy supply mechanism comprises a mounting assembly and a buffer assembly, the mounting assembly comprises a hard blade frame, blades are provided inside the hard blade frame, the hard blade frame and the blades are both inclined, and a blade shaft is fixedly mounted in the center of the front and rear ends of the blades. The present invention can reduce the windward surface of the blades and the hard blade frame, reduce the wind pressure on the blades and the hard blade frame, reduce the output power, release excess wind pressure, and thus protect the small wind turbine generator from damage.

Description

Technical Field

[0001] The present invention relates to the field of wind turbines, and in particular to a small wind turbine. Background Art

[0002] Wind power generation has been widely used as a clean and sustainable way to obtain energy. However, due to the complex wind conditions in the operating environment and the market acceptance cost, small wind turbines are difficult to use sophisticated and expensive mechanical systems. Therefore, small wind turbines currently have the problems of high failure rate and short service life. The most prominent problem is that in a strong wind environment, the blades of the wind turbine are easily subjected to excessive wind pressure, causing damage to the equipment. Although there are many technical applications for adjusting blades and reducing wind pressure, such as inertial pitch control and eccentric swing head, the inertial pitch control technology has a complex structure, poor durability, and the overall application failure rate of small wind turbines is still very high. In order to solve this problem, the present invention proposes a new small wind turbine capable of automatic pitch control. Summary of the Invention

[0003] The main purpose of the present invention is to provide a small wind turbine that can effectively solve the technical problems raised by the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A small wind turbine generator includes a conversion mechanism, the conversion mechanism including a nacelle, a sealing disk disposed on the top of the nacelle, a secondary shaft fixedly mounted in the center of the top of the sealing disk, the conversion mechanism for converting mechanical energy into electrical energy, an adjustment mechanism disposed on the top of the secondary shaft, and three energy supply mechanisms disposed on the outer ring of the adjustment mechanism;

[0006] The energy supply mechanism includes a carrying component and a buffer component. The carrying component includes a hard paddle frame, and a paddle blade is arranged inside the hard paddle frame. The hard paddle frame and the paddle blade are both inclined. The front and rear ends of the blades are fixedly installed with a paddle shaft in the center. The blades are movably connected to the hard paddle frame through the paddle shaft. Four linkage parts are fixedly installed through the front and back sides of the blades. The buffer component passes through the front and back sides of the blades and is close to the front and rear ends. The buffer component includes an adapter frame, and a limiting slide is fixedly installed at the front end of the adapter frame. Four springs are arranged inside the limiting slide, and one end of the spring is fixedly connected to the linkage part. The energy supply mechanism is used to convert wind energy into mechanical energy, and the adjustment mechanism is used to adjust the angle of the hard paddle frame, reduce the windward surface of the energy supply mechanism, and reduce the wind pressure on the energy supply mechanism.

[0007] Specifically, the spring shares the force on the blades while cushioning the blades' rotation, preventing the blades from collapsing due to wind pressure when the wind is strong. When the wind increases further, the adjustment mechanism drives the angle of the hard blade frame and blades to rotate to a horizontal state, completing the second level of adjustment, further reducing the windward surface of the energy supply mechanism, lowering the wind pressure on the energy supply mechanism, reducing the output power, and releasing excess wind pressure, thereby protecting the small wind turbine from damage.

[0008] As a further solution of the present invention, the mounting assembly also includes a guide frame fixedly installed on the outer periphery of the hard paddle frame. The cross-section of the guide frame is an isosceles triangle, and a number of air holes are opened through the front and back sides of the hard paddle frame. The adapter frame is bolted to the hard paddle frame by bolts.

[0009] Specifically, the impact of wind pressure on the hard paddle frame is reduced to avoid damage to the hard paddle frame due to excessive wind pressure.

[0010] As a further solution of the present invention, the adjustment mechanism includes a chassis, an adjustment motor is installed inside the chassis, a disc gear is fixedly installed at the end of the adjustment motor output shaft, three bevel gears are meshed and connected at the bottom of the disc gear, and an adapter is fixedly installed on the outside of the bevel gear.

[0011] Specifically, it is convenient to drive the three adapters to rotate synchronously.

[0012] As a further solution of the present invention, a buffer gasket is provided on the top of the regulating motor, and a cover is provided on the top of the chassis, and the cover is bolted to the chassis by bolts.

[0013] Specifically, the vibration amplitude of the regulating motor during operation is reduced, and at the same time, the cover is easily disassembled to perform maintenance on the regulating motor.

[0014] As a further solution of the present invention, a gear box is provided at the bottom of the chassis, and the gear box is bolted to the chassis by bolts. Three shaft tubes are fixedly installed through the side of the gear box, and the angle between the three shaft tubes is 120°. The adapter is rotatably connected to the shaft tube through a bearing, and the gear box is bolted to the secondary shaft by bolts.

[0015] Specifically, it is convenient to inspect and repair the disc gear and the bevel gear.

[0016] As a further solution of the present invention, the adapter is bolted to the hard paddle frame via bolts, and the end of the adapter is clamped to the adapter frame.

[0017] Specifically, it is convenient to replace a damaged hard paddle frame, and the adapter is limited by the adapter frame to share the pressure on the bolts connected to the adapter.

[0018] As a further solution of the present invention, the conversion mechanism also includes bead grooves opened on the top of the cabin and the bottom of the sealing disk, a number of balls are arranged between the upper and lower bead grooves, and a main shaft is fixedly installed in the center of the bottom of the sealing disk.

[0019] Specifically, the pressure on the sealing disk is shared, and the friction force on the sealing disk during rotation is reduced by using the balls and the ball grooves.

[0020] As a further solution of the present invention, the conversion mechanism further comprises a sealing ring fixedly mounted on the outer ring of the nacelle near the top end, and a dynamic seal is provided on the inner ring of the sealing ring near the top end.

[0021] Specifically, prevent moisture and dust from entering the space between the sealing disk and the cabin, thereby contaminating and corroding the ball bearings and the main shaft.

[0022] As a further solution of the present invention, a generator, a gearbox, a transformer and a control system are installed inside the nacelle, and the shaft of the generator is connected to the main shaft through the gearbox.

[0023] Specifically, the generated electric energy is transformed by a transformer and then enters the transmission line.

[0024] As a further solution of the present invention, a column is fixedly installed at the bottom of the cabin, and side brackets are fixedly installed on both sides of the column. A wind direction sensor is fixedly installed on the top of one of the side brackets, and a wind speed sensor is fixedly installed on the top of the other side bracket.

[0025] Specifically, it is convenient to complete the second-level regulation, reduce the windward surface of the energy supply mechanism, reduce the wind pressure on the energy supply mechanism, reduce the output power, release the excess wind pressure, and thus protect the small wind turbine from damage.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention provides a buffer assembly in the energy supply mechanism. When the wind is strong, the wind pressure acts on the blades, causing the blades to rotate around the rotating shaft, performing the first-level adjustment. Two springs are compressed and cooperate with the linkage to support the blades, while the other two springs are stretched and cooperate with the linkage to pull the blades. The springs share the force on the blades while also providing a buffer for the blades' rotation, thus preventing the blades from being damaged by the wind pressure when the wind is strong.

[0028] 2. The present invention provides an adjustment mechanism in conjunction with the energy supply mechanism. When the wind force increases further, the control system starts the adjustment motor in the adjustment mechanism. After the adjustment motor starts, it drives the disc gear to rotate, and the rotation of the disc gear drives the three bevel gears to rotate synchronously, thereby driving the adapter to rotate, adjusting the angle of the hard propeller frame and the blades, so that the hard propeller frame and the blades rotate to a horizontal state, completing the second-level adjustment, further reducing the windward surface of the energy supply mechanism, reducing the wind pressure on the energy supply mechanism, reducing the output power, releasing excess wind pressure, and thus protecting the small wind turbine from damage;

[0029] 3. The present invention sets a conversion mechanism. When the sealing disk rotates around the main shaft, the sealing disk is supported by the balls to share the pressure on the sealing disk. At the same time, the balls are used in conjunction with the ball grooves to reduce the friction during the rotation of the sealing disk. The connection between the sealing disk and the cabin is sealed by the sealing ring and the dynamic seal to prevent water vapor and dust from entering the space between the sealing disk and the cabin, which will contaminate and corrode the balls and the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a small wind turbine according to the present invention;

[0031] Figure 2 This is a front view of the overall structure of a small wind turbine according to the present invention;

[0032] Figure 3 This is a schematic structural diagram of an energy supply mechanism in a small wind turbine according to the present invention;

[0033] Figure 4 This is a schematic structural diagram of a blade and its components in a small wind turbine according to the present invention;

[0034] Figure 5 A small wind turbine according to the present invention Figure 4 A magnified view of area A in ;

[0035] Figure 6 This is a structural schematic diagram of a buffer assembly in a small wind turbine according to the present invention;

[0036] Figure 7 This is a schematic diagram of the internal structure of a limiting sliding tube in a small wind turbine according to the present invention;

[0037] Figure 8 This is a structural exploded view of a conversion mechanism in a small wind turbine according to the present invention;

[0038] Figure 9 This is a cross-sectional view of the connection between the chassis and the sealing disk in a small wind turbine of the present invention;

[0039] Figure 10This is a schematic structural diagram of an adjustment mechanism in a small wind turbine according to the present invention;

[0040] Figure 11 This is a structural breakdown diagram of an adjustment mechanism in a small wind turbine according to the present invention.

[0041] In the picture:

[0042] 1. Conversion mechanism; 101. Nacelle; 102. Sealing ring; 103. Dynamic seal; 104. Sealing disk; 105. Countershaft; 106. Ball groove; 107. Ball; 108. Main shaft;

[0043] 2. Adjustment mechanism; 201. Chassis; 202. Cover; 203. Gearbox; 204. Shaft tube; 205. Adapter; 206. Adjustment motor; 207. Disc gear; 208. Bevel gear; 209. Buffer gasket;

[0044] 3. Energy supply mechanism;

[0045] 31. Mounting components; 3101. Hard propeller frame; 3102. Propeller blades; 3103. Air holes; 3104. Air guide frame; 3105. Propeller shaft; 3106. Linkage components;

[0046] 32. Buffer assembly; 3201. Adapter frame; 3202. Limiting slide tube; 3203. Spring;

[0047] 4. Column; 5. Side bracket; 6. Wind direction sensor; 7. Wind speed sensor. DETAILED DESCRIPTION

[0048] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0049] like Figures 1-11 As shown, a small wind turbine includes a conversion mechanism 1, which includes a nacelle 101. A sealing disk 104 is provided on the top of the nacelle 101. A secondary shaft 105 is fixedly mounted in the center of the top of the sealing disk 104. The conversion mechanism 1 is used to convert mechanical energy into electrical energy. An adjustment mechanism 2 is provided on the top of the secondary shaft 105. Three energy supply mechanisms 3 are provided on the outer ring of the adjustment mechanism 2.

[0050] The energy supply mechanism 3 includes a carrying component 31 and a buffer component 32. The carrying component 31 includes a hard paddle frame 3101. The hard paddle frame 3101 is provided with a blade 3102. The hard paddle frame 3101 and the blade 3102 are both tilted. The front and rear ends of the blade 3102 are fixedly installed with a paddle shaft 3105. The blade 3102 is movably connected to the hard paddle frame 3101 through the paddle shaft 3105. Four linkage members 3106 are fixedly installed on the front and back sides of the blade 3102. The buffer component 32 is provided through The buffer assembly 32 passes through the front and back sides of the blade 3102 and is close to the front and rear ends. It includes an adapter frame 3201, and a limiting slide tube 3202 is fixedly installed at the front end of the adapter frame 3201. Four springs 3203 are arranged inside the limiting slide tube 3202. One end of the spring 3203 is fixedly connected to the linkage part 3106. The energy supply mechanism 3 is used to convert wind energy into mechanical energy, and the adjustment mechanism 2 is used to adjust the angle of the hard blade frame 3101, reduce the windward surface of the energy supply mechanism 3, and reduce the wind pressure on the energy supply mechanism 3.

[0051] Specifically, after the small wind turbine is running, when the wind blows through the hard blade frame 3101 and the blade 3102, the hard blade frame 3101 and the blade 3102 are rotated by the wind, and then the wind energy is converted into mechanical energy, and then the mechanical energy is converted into electrical energy through the conversion mechanism 1. When the wind is strong, the wind pressure acts on the blade 3102, causing the blade 3102 to rotate around the rotating shaft, and the first level of adjustment is performed, wherein two springs 3203 are compressed and cooperate with the linkage 3106 to support the blade 3102, and the other two springs 3203 are stretched and cooperate with the linkage 3106 to pull the blade 3102. 02. While the spring 3203 shares the force on the blade 3102, the blade 3102 can also be buffered due to its rotation, so as to avoid the blade 3102 from being damaged by the wind pressure when the wind is strong. When the wind force increases further, the adjustment mechanism 2 drives the angle of the hard blade frame 3101 and the blade 3102 to rotate to a horizontal state, completing the second level of adjustment, further reducing the windward surface of the energy supply mechanism 3, reducing the wind pressure on the energy supply mechanism 3, reducing the output power, releasing excess wind pressure, and thus protecting the small wind turbine from damage.

[0052] The mounting component 31 also includes a guide frame 3104 fixedly installed on the outer periphery of the hard paddle frame 3101. The cross-section of the guide frame 3104 is an isosceles triangle, and several air holes 3103 are opened through the front and back sides of the hard paddle frame 3101. The adapter frame 3201 is bolted to the hard paddle frame 3101 by bolts.

[0053] Specifically, when the hard paddle frame 3101 rotates to a horizontal state, the wind direction is divided and guided by the guide frame 3104, thereby reducing the impact of wind pressure on the hard paddle frame 3101 and preventing the hard paddle frame 3101 from being damaged by excessive wind pressure.

[0054] The adjustment mechanism 2 includes a chassis 201, an adjustment motor 206 is installed inside the chassis 201, a disc gear 207 is fixedly installed at the end of the output shaft of the adjustment motor 206, three bevel gears 208 are meshed and connected at the bottom of the disc gear 207, and an adapter 205 is fixedly installed outside the bevel gear 208.

[0055] Specifically, when the adjustment motor 206 is started, it drives the disc gear 207 to rotate, and the rotation of the disc gear 207 drives the three bevel gears 208 to rotate synchronously, and then drives the adapter 205 to rotate, so as to drive the three adapters 205 to rotate synchronously.

[0056] A buffer gasket 209 is provided on the top of the regulating motor 206 , and a cover 202 is provided on the top of the chassis 201 . The cover 202 is bolted to the chassis 201 by bolts.

[0057] Specifically, the regulating motor 206 is fixed by the cover 202 in conjunction with the buffer gasket 209. When the regulating motor 206 is started, the buffer gasket 209 provides a buffer to reduce the vibration amplitude of the regulating motor 206 during operation. At the same time, it is convenient to remove the cover 202 and inspect the regulating motor 206.

[0058] A gear box 203 is provided at the bottom of the chassis 201, and the gear box 203 is bolted to the chassis 201 by bolts. Three shaft tubes 204 are fixedly installed through the side of the gear box 203, and the angle between the three shaft tubes 204 is 120°. The adapter 205 is rotatably connected to the shaft tube 204 through a bearing, and the gear box 203 is bolted to the secondary shaft 105 by bolts.

[0059] Specifically, the gear box 203 is provided to protect the disc gear 207 and the bevel gear 208 , and at the same time, the gear box 203 is easy to disassemble and the disc gear 207 and the bevel gear 208 are easy to repair.

[0060] The adapter 205 is bolted to the hard paddle frame 3101 by bolts, and the end of the adapter 205 is snap-fitted to the adapter frame 3201 .

[0061] Specifically, by providing the adapter 205, it is convenient to connect the mounting assembly 31 and the buffer assembly 32 together, and at the same time it is convenient to disassemble the hard paddle frame 3101, and to replace the damaged hard paddle frame 3101. The adapter 205 is limited by the adapter frame 3201 to share the pressure on the bolts connected to the adapter 205.

[0062] The conversion mechanism 1 also includes bead grooves 106 opened at the top of the cabin 101 and the bottom of the sealing disk 104. A plurality of balls 107 are arranged between the upper and lower bead grooves 106. A main shaft 108 is fixedly installed in the center of the bottom of the sealing disk 104.

[0063] Specifically, when the closing disk 104 rotates around the main shaft 108, the closing disk 104 is supported by the balls 107 to share the pressure on the closing disk 104. At the same time, the balls 107 cooperate with the ball grooves 106 to reduce the friction force on the closing disk 104 during rotation.

[0064] The conversion mechanism 1 further includes a sealing ring 102 fixedly mounted on the outer ring of the nacelle 101 near the top end, and a dynamic seal 103 is provided on the inner ring of the sealing ring 102 near the top end.

[0065] Specifically, the connection between the sealing disk 104 and the cabin 101 is sealed by the sealing ring 102 in cooperation with the dynamic seal 103 to prevent moisture and dust from entering the space between the sealing disk 104 and the cabin 101 and contaminating and corroding the ball 107 and the main shaft 108.

[0066] A generator, a gearbox, a transformer and a control system are installed inside the nacelle 101. The generator shaft is connected to the main shaft 108 through the gearbox. The control system is disclosed in the patent document with publication number CN102734066A and is therefore prior art.

[0067] Specifically, the closing disk 104 rotates to drive the main shaft 108 to rotate, and then drives the generator to rotate and generate electricity after the speed is changed through the gearbox. The generated electricity is then transformed by the transformer and enters the transmission line.

[0068] A column 4 is fixedly installed at the bottom of the cabin 101, and side brackets 5 are fixedly installed on both sides of the column 4. A wind direction sensor 6 is fixedly installed on the top of one of the side brackets 5, and a wind speed sensor 7 is fixedly installed on the top of the other side bracket 5. The model of the wind direction sensor 6 is FST200-202, and the model of the wind speed sensor 7 is FST200-201.

[0069] Specifically, the wind pressure is monitored by the wind direction sensor 6 in conjunction with the wind speed sensor 7. When the wind pressure is too high, the regulating motor 206 in the regulating mechanism 2 is started by the control system to complete the second-level regulation, reduce the windward surface of the energy supply mechanism 3, reduce the wind pressure on the energy supply mechanism 3, reduce the output power, and release excess wind pressure, thereby protecting the small wind turbine from damage.

[0070] How it works

[0071] After the small wind turbine is in operation, when the wind blows through the hard blade frame 3101 and the blades 3102, the hard blade frame 3101 and the blades 3102 are rotated by the wind, and then the wind energy is converted into mechanical energy. After the closing disk 104 rotates, it drives the main shaft 108 to rotate, and then drives the generator to rotate and generate electricity after the gearbox changes speed. The generated electricity is then transformed by the transformer and enters the transmission line. When the wind is strong, the wind pressure acts on the blades 3102, causing the blades 3102 to rotate around the rotating shaft, and the first level of adjustment is performed. Two springs 3203 are compressed and cooperate with the linkage 3106 to support the blades 3102, and the other two springs 3203 are stretched and cooperate with the linkage 3106 to pull the blades 3102. While the springs 3203 share the force on the blades 3102, the blades 3102 can also be adjusted. 02 is buffered by rotation to prevent the blades 3102 from being damaged by wind pressure when the wind is strong. The wind pressure is monitored by the wind direction sensor 6 in conjunction with the wind speed sensor 7. When the wind increases further, the regulating motor 206 in the regulating mechanism 2 is started by the control system. When the regulating motor 206 is started, it drives the disc gear 207 to rotate, and then the rotation of the disc gear 207 drives the three bevel gears 208 to rotate synchronously, and then drives the adapter 205 to rotate, adjust the angle of the hard blade frame 3101 and the blade 3102, and rotate the hard blade frame 3101 and the blade 3102 to a horizontal state, completing the second level of adjustment, further reducing the windward surface of the energy supply mechanism 3, reducing the wind pressure on the energy supply mechanism 3, reducing the output power, releasing excess wind pressure, and thus protecting the small wind turbine from damage.

[0072] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A small wind turbine generator, comprising a conversion mechanism (1), the conversion mechanism (1) comprising a nacelle (101), a sealing disc (104) being provided on the top of the nacelle (101), a secondary shaft (105) being fixedly mounted in the center of the top of the sealing disc (104), the conversion mechanism (1) being used to convert mechanical energy into electrical energy, and characterized in that: An adjustment mechanism (2) is provided on the top of the secondary shaft (105), and three energy supply mechanisms (3) are provided on the outer ring of the adjustment mechanism (2); The energy supply mechanism (3) includes a carrying component (31) and a buffer component (32), the carrying component (31) includes a hard paddle frame (3101), a paddle blade (3102) is arranged inside the hard paddle frame (3101), the hard paddle frame (3101) and the paddle blade (3102) are both inclined, a paddle shaft (3105) is fixedly installed at the front and rear ends of the paddle blade (3102), the paddle blade (3102) is movably connected to the hard paddle frame (3101) through the paddle shaft (3105), and four linkages are fixedly installed on the front and back sides of the paddle blade (3102). The buffer assembly (32) passes through the front and back sides of the blade (3102) and is located near the front and rear ends. The buffer assembly (32) includes an adapter frame (3201). A limiting slide tube (3202) is fixedly installed at the front end of the adapter frame (3201). Four springs (3203) are provided inside the limiting slide tube (3202). One end of the spring (3203) is fixedly connected to the linkage member (3106). The energy supply mechanism (3) is used to convert wind energy into mechanical energy. The adjustment mechanism (2) is used to adjust the angle of the hard blade frame (3101). When the wind blows through the hard blade frame (3101), the hard blade frame (3101) is rotated. When the hard paddle frame (3101) and the paddle blade (3102) are in contact with each other, the hard paddle frame (3101) and the paddle blade (3102) are rotated by the wind, thereby converting the wind energy into mechanical energy, and then converting the mechanical energy into electrical energy through the conversion mechanism (1). When the wind is strong, the wind pressure acts on the paddle blade (3102), causing the paddle blade (3102) to rotate around the rotating shaft, and performing the first-level adjustment, wherein two springs (3203) are compressed and cooperate with the linkage (3106) to support the paddle blade (3102), and the other two springs (3203) are stretched and cooperate with the linkage (3106) to support the paddle blade (3102). ) pulls the blade (3102), and while sharing the force of the blade (3102) through the spring (3203), the blade (3102) can be buffered due to rotation, so as to avoid the blade (3102) being affected by the wind pressure and breaking when the wind force is strong. When the wind force increases further, the angle of the hard blade frame (3101) and the blade (3102) is driven by the adjustment mechanism (2), so that the hard blade frame (3101) and the blade (3102) are rotated to a horizontal state, completing the second-level adjustment, reducing the windward surface of the energy supply mechanism (3), and reducing the wind pressure on the energy supply mechanism (3).

2. A small wind turbine according to claim 1, characterized in that: The mounting assembly (31) further includes a guide frame (3104) fixedly mounted on the outer periphery of the hard paddle frame (3101); the cross section of the guide frame (3104) is arranged in the form of an isosceles triangle; a plurality of air holes (3103) are provided on the front and back sides of the hard paddle frame (3101); and the adapter frame (3201) is bolted to the hard paddle frame (3101) by bolts.

3. A small wind turbine according to claim 1, characterized in that: The regulating mechanism (2) comprises a chassis (201), an regulating motor (206) is installed inside the chassis (201), a disc gear (207) is fixedly installed at the end of the output shaft of the regulating motor (206), three bevel gears (208) are meshedly connected at the bottom of the disc gear (207), and an adapter (205) is fixedly installed outside the bevel gear (208).

4. A small wind turbine according to claim 3, characterized in that: A buffer gasket (209) is provided on the top of the regulating motor (206), and a cover (202) is provided on the top of the chassis (201), and the cover (202) is bolted to the chassis (201) via bolts.

5. A small wind turbine according to claim 4, characterized in that: A gear box (203) is provided at the bottom of the chassis (201), and the gear box (203) is bolted to the chassis (201) by bolts. Three shaft tubes (204) are fixedly installed through the side of the gear box (203), and the angle between the three shaft tubes (204) is 120 degrees. The adapter (205) is rotatably connected to the shaft tube (204) through a bearing, and the gear box (203) is bolted to the secondary shaft (105) by bolts.

6. A small wind turbine according to claim 5, characterized in that: The adapter (205) is bolted to the hard paddle frame (3101) via bolts, and the end of the adapter (205) is snap-connected to the adapter frame (3201).

7. A small wind turbine according to claim 3, characterized in that: The conversion mechanism (1) further comprises a bead groove (106) provided at the top of the cabin (101) and the bottom of the sealing disk (104), a plurality of balls (107) being provided between the upper and lower bead grooves (106), and a main shaft (108) being fixedly mounted at the center of the bottom of the sealing disk (104).

8. A small wind turbine according to claim 7, characterized in that: The conversion mechanism (1) further comprises a sealing ring (102) fixedly mounted on the outer ring of the cabin (101) near the top end, and a dynamic seal (103) is provided on the inner ring of the sealing ring (102) near the top end.

9. A small wind turbine according to claim 8, characterized in that: A generator, a gearbox, a transformer and a control system are installed inside the nacelle (101), and the generator shaft is connected to the main shaft (108) through the gearbox.

10. The small wind turbine according to claim 1, characterized in that: A column (4) is fixedly mounted on the bottom of the cabin (101), and side brackets (5) are fixedly mounted on both sides of the column (4), a wind direction sensor (6) is fixedly mounted on the top of one of the side brackets (5), and a wind speed sensor (7) is fixedly mounted on the top of the other side bracket (5).

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