Small wind driven generator

Abstract

The invention discloses a small wind driven generator, and relates to the field of wind driven generators, the small wind driven generator comprises a conversion mechanism, the conversion mechanism comprises a cabin, a sealing disc is arranged at the top of the cabin, an auxiliary shaft is fixedly installed in the middle of the top of the sealing disc, and the conversion mechanism is used for converting mechanical energy into electric energy; an adjusting mechanism is arranged at the top of the auxiliary shaft, three energy supply mechanisms are arranged on the outer ring of the adjusting mechanism, each energy supply mechanism comprises a carrying assembly and a buffering assembly, each carrying assembly comprises a hard paddle frame, paddles are arranged in the hard paddle frames, and the hard paddle frames and the paddles are obliquely arranged; paddle shafts are fixedly installed in the middles of the front ends and the rear ends of the paddles. According to the invention, the windward sides of the blades and the hard blade frame can be reduced, the wind pressure on the blades and the hard blade frame is reduced, the output power is reduced, and the redundant wind pressure is released, so that the small-sized wind driven generator is protected from being damaged.

Description

Technical Field

[0001] The 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 of small wind turbines and the cost of market acceptance, it is difficult to use sophisticated and expensive mechanical systems. Therefore, small wind turbines currently generally have high failure rates and short service lives. The most prominent problem is that in a windy environment, the blades of a 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 generator which 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 comprises a conversion mechanism, the conversion mechanism comprises a nacelle, a sealing plate is arranged on the top of the nacelle, a secondary shaft is fixedly mounted in the center of the top of the sealing plate, the conversion mechanism is used to convert mechanical energy into electrical energy, an adjustment mechanism is arranged on the top of the secondary shaft, and three energy supply mechanisms are arranged 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 paddle blades are arranged inside the hard paddle frame. The hard paddle frame and the paddle blades are both inclined. Paddle shafts are fixedly installed at the front and rear ends of the blades. The blades are movably connected to the hard paddle frame through the paddle shafts. 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 tube is fixedly installed at the front end of the adapter frame. Four springs are arranged inside the limiting slide tube, 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. 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 buffering the blades due to rotation, thereby preventing the blades from being damaged by wind pressure when the wind is strong. When the wind further increases, the adjustment mechanism drives the angle of the hard blade frame and the blades to rotate to a horizontal state, completing the second level of 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.

[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. A plurality 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 prevent the hard paddle frame from being damaged by 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 output shaft of the adjustment motor, three bevel gears are meshed and connected at the bottom of the disc gear, and an adapter is fixedly installed outside 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 arranged on the top of the regulating motor, and a cover is arranged 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, it is convenient to disassemble the cover and inspect 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 overhaul 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 by 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 plurality 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 balls are used in conjunction with the ball grooves to reduce the friction force on the sealing disk during its rotation.

[0020] As a further solution of the present invention, the conversion mechanism also includes 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 water vapor and dust from entering the space between the sealing disk and the cabin to contaminate and corrode 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 sets a buffer component in the energy supply mechanism. When the wind force is strong, the wind pressure acts on the blades, causing the blades to rotate around the rotating shaft, and performs the first-level adjustment. Two springs are compressed and cooperate with the linkage to support the blades, and the other two springs are stretched and cooperate with the linkage to pull the blades. While the springs share the force on the blades, the blades can be buffered due to rotation, so as to avoid the blades being damaged by the wind pressure when the wind force is strong.

[0028] 2. The present invention sets an adjustment mechanism to cooperate with the energy supply mechanism. When the wind force further increases, the control system starts the adjustment motor in the adjustment mechanism. When the adjustment motor starts, it drives the disc gear to rotate, and then 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 blade frame and the blade, so that the hard blade frame and the blade 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 the 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 ball bearings to share the pressure on the sealing disk. At the same time, the friction force on the sealing disk during the rotation process is reduced by the ball bearings and the ball grooves. 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, thereby contaminating and corroding the ball bearings 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 generator according to the present invention;

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

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

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

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

[0035] Figure 6 It is a structural schematic diagram of a buffer component in a small wind turbine generator of the present invention;

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

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

[0038] Fig. 9 A cross-sectional view of the connection between a casing and a sealing disk in a small wind turbine of the present invention;

[0039] Fig.10It is a structural schematic diagram of an adjusting mechanism in a small wind turbine generator of the present invention;

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

[0041] In the figure:

[0042] 1. conversion mechanism; 101. cabin; 102. sealing ring; 103. dynamic seal; 104. sealing disk; 105. secondary shaft; 106. ball groove; 107. ball; 108. main shaft;

[0043] 2. Adjustment mechanism; 201. Chassis; 202. Cover; 203. Gear box; 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 paddle frame; 3102. Paddle blades; 3103. Wind holes; 3104. Flow guide frame; 3105. Paddle shaft; 3106. Linkage parts;

[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 easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0049] like Figure 1-Figure 11 As shown, a small wind turbine generator comprises a conversion mechanism 1, the conversion mechanism 1 comprises a nacelle 101, a sealing plate 104 is arranged on the top of the nacelle 101, a secondary shaft 105 is fixedly installed in the center of the top of the sealing plate 104, the conversion mechanism 1 is used to convert mechanical energy into electrical energy, an adjustment mechanism 2 is arranged on the top of the secondary shaft 105, and three energy supply mechanisms 3 are arranged 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. 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. Four linkage members 3106 are fixedly installed on the front and back sides of the paddle blade 3102. The buffer component 32 is installed 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. 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 force, 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 force 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 be buffered due to its rotation, so as to avoid the blade 3102 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 the 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. A number of 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 cooperation 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 disassemble 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 the gear box 203 is convenient to disassemble and to inspect and repair the disc gear 207 and the bevel gear 208 .

[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 it is also 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 on 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 , and 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 the rotation process.

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

[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 water vapor 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 shaft of the generator is connected to the main shaft 108 through the gearbox. The patent document with publication number CN102734066A discloses the control system, so it is a prior art.

[0067] Specifically, the sealing disk 104 rotates to drive the main shaft 108 to rotate, and then drives the generator to rotate and generate electricity after the gearbox changes speed. The generated electric energy 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 direction sensor 6 cooperates with the wind speed sensor 7 to monitor the wind pressure. When the wind pressure is too high, the control system starts the regulating motor 206 in the regulating mechanism 2 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, release the excess wind pressure, and thus protect 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 force, 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 electric energy is then transformed by the transformer and enters the transmission line. When the wind force 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 be made to rotate. 02 is buffered by the rotation to avoid the blade 3102 from being damaged by the wind pressure when the wind is strong. The wind pressure is monitored by the wind direction sensor 6 and the wind speed sensor 7. When the wind increases further, the adjusting motor 206 in the adjusting mechanism 2 is started by the control system. When the adjusting motor 206 is started, the disk gear 207 is driven to rotate, and the three bevel gears 208 are driven to rotate synchronously through the rotation of the disk gear 207, thereby driving the adapter 205 to rotate, adjusting the angles of the hard blade frame 3101 and the blade 3102, so that the hard blade frame 3101 and the blade 3102 are rotated to a horizontal state, completing the second-level 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 the excess wind pressure, and thus protecting the small wind turbine from damage.

[0072] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached 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 plate (104) being arranged on the top of the nacelle (101), a secondary shaft (105) being fixedly mounted in the center of the top of the sealing plate (104), the conversion mechanism (1) being used for converting mechanical energy into electrical energy, and characterized in that: The top of the secondary shaft (105) is provided with an adjustment mechanism (2), and the outer ring of the adjustment mechanism (2) is provided with three energy supply mechanisms (3); The energy supply mechanism (3) comprises a carrying component (31) and a buffer component (32), wherein the carrying component (31) comprises a hard paddle frame (3101), wherein a paddle blade (3102) is arranged inside the hard paddle frame (3101), wherein the hard paddle frame (3101) and the paddle blade (3102) are both arranged in an inclined manner, wherein a paddle shaft (3105) is fixedly installed at the center of the front and rear ends of the paddle blade (3102), wherein the paddle blade (3102) is movably connected to the hard paddle frame (3101) via the paddle shaft (3105), wherein four linkage members (3106) are fixedly installed on the front and rear sides of the paddle blade (3102), and wherein the buffer component (32) penetrates through the front and back sides of the blade (3102) and is located close to 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 arranged inside the limiting slide tube (3202), one end of the spring (3203) is fixedly connected to the linkage (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).

2. A small wind turbine according to claim 1, characterized in that: The mounting assembly (31) further comprises 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 shape of an isosceles triangle; a plurality of air holes (3103) are provided through 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 adjustment mechanism (2) comprises 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 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 arranged on the top of the regulating motor (206), a cover (202) is arranged 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 arranged 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 nacelle (101) and the bottom of the sealing plate (104), a plurality of rolling balls (107) being arranged between the upper and lower bead grooves (106), and a main shaft (108) being fixedly mounted in the center of the bottom of the sealing plate (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 nacelle (101) near the top end, and a dynamic seal (103) is arranged 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 shaft of the generator is connected to the main shaft (108) through the gearbox.

10. A 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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