Wind power generation device and wind power generation system

Abstract

The invention discloses a wind power generation device and a wind power generation system, and belongs to the field of wind power generation. A wind power generation device comprises a cabin and further comprises a power generation part arranged in the cabin, wind power can drive the power generation part to rotate, and the power generation part is used for converting wind energy into mechanical energy and then converting the mechanical energy into electric energy; the rotating speed sensing unit is arranged on the power generation part and used for sensing the rotating speed of the power generation part; the angle adjusting unit is arranged on the power generation part, electrically connected with the rotation sensing unit and used for adjusting the coincidence size between the power generation part and the wind direction; the loss reduction unit is arranged in the cabin, and when the power generation part rotates to the threshold speed, the rotating speed induction unit can drive the loss reduction unit to rotate and is used for adding lubricating oil to the power generation part and accelerating air circulation in the cabin; the problems that the wind energy utilization rate is low, the safety and reliability of the whole machine structure are poor, and the service life of equipment is short can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power generation device and a wind power generation system. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind energy is a clean, pollution-free renewable energy source. Generally, the kinetic energy of wind is converted into mechanical energy, and then the mechanical energy is converted into electrical energy. Using wind power for power generation is very environmentally friendly, and the wind energy reserves are huge, so it is increasingly valued by countries around the world.

[0003] At present, when wind power generation devices collect wind power, it is difficult to control the size of the wind. When the wind is small, the utilization rate of wind energy is low; when the wind is strong, the rotation speed of the blades is fast, which can easily cause vibration of the blades, gearbox, and generator set, seriously affecting the safety and reliability of the entire machine structure. In addition, too fast rotation speed will accelerate the wear of internal parts, increase heat, and affect the service life of the equipment. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of low wind energy utilization, poor safety and reliability of the whole machine structure, and short equipment service life in the prior art, and to propose a wind power generation device and a wind power generation system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A wind power generation device includes a nacelle, and also includes: a power generation unit arranged in the nacelle, wind force can drive the power generation unit to rotate, and is used to convert wind energy into mechanical energy, and then convert the mechanical energy into electrical energy; a rotation speed sensing unit arranged on the power generation unit, and is used to sense the rotation speed of the power generation unit; an angle adjustment unit arranged on the power generation unit, the angle adjustment unit is electrically connected to the rotation sensing unit, and is used to adjust the size of overlap between the power generation unit and the wind direction; a loss reduction unit arranged in the nacelle, when the power generation unit rotates to a threshold speed, the rotation speed sensing unit can drive the loss reduction unit to rotate, and is used to add lubricating oil to the power generation unit and accelerate air circulation in the nacelle.

[0007] In order to facilitate the conversion of wind energy into mechanical energy and then into mechanical energy into electrical energy, preferably, the power generation unit includes a rotating shaft rotatably connected to the nacelle, the end of the rotating shaft extends to the outside of the nacelle, and the end of the rotating shaft is fixedly connected to an impeller seat, a plurality of groups of rotating blocks are rotatably connected to the impeller seat, blades are fixedly connected to the rotating blocks, a gearbox connected to the rotating shaft is fixedly connected to the interior of the nacelle, a generator set connected to the gearbox is fixedly connected to the interior of the nacelle, and an electrical box electrically connected to the generator set is fixedly connected to the interior of the nacelle.

[0008] In order to facilitate sensing the size of wind force, the speed sensing unit further includes a driving wheel rotatably connected to the rotating shaft, a mounting wheel is fixedly connected to the side of the rotating shaft close to the driving wheel, an inner ratchet is provided on the side of the driving wheel close to the mounting wheel, multiple groups of pawls are rotatably connected to the mounting wheel, a counterweight is fixedly connected to the pawl, a spring is fixedly connected between the pawl and the mounting wheel, and a positioning sensor and an adjustment switch are respectively provided on both sides of the mounting wheel close to the pawl, wherein the bending direction of the pawl is the same as the rotation direction of the rotating shaft, the inner ratchet matches the pawl, the positioning sensor is located on the side of the pawl away from the bending direction, and the adjustment switch is located on the side of the pawl close to the bending direction.

[0009] In order to facilitate the rotation of the driving bevel gear, further, it also includes a driven wheel rotatably connected to the side of the cabin close to the driving wheel, and a belt is sleeved between the driven wheel and the driving wheel.

[0010] In order to facilitate the adjustment of the angle of the blades, the angle adjustment unit further includes a driving motor fixedly connected to the impeller seat, the output end of the driving motor is fixedly connected to the end gear, and the end of the rotating block close to the driving motor is fixedly connected to the adjusting gear meshing with the end gear, wherein the driving motor is electrically connected to the positioning sensor, the adjusting switch and the electrical box, the electrical box is used to supply power to the driving motor, and the positioning sensor and the adjusting switch are used to control the rotation and rotation direction of the driving motor.

[0011] In order to reduce the wear of parts such as the rotating shaft when the speed is too fast, the loss reduction unit further includes an oil storage tank and an adjusting cylinder fixedly connected in the cabin, the adjusting cylinder is located at the bottom of the cabin, the oil storage tank is located above the adjusting cylinder, and the oil storage tank is in the shape of an open ring, the opening of the oil storage tank is close to the adjusting cylinder, the interior of the oil storage tank is symmetrically slidably connected with a movable sealing plate, and a plurality of groups of nozzles are symmetrically arranged on the upper side of the inner side of the oil storage tank, and a recovery component connected to the adjusting cylinder is fixedly connected between the opening of the oil storage tank and the adjusting cylinder, a one-way valve is arranged inside the recovery component, and the nozzle is close to the connection between the rotating shaft and the cabin and the connection between the rotating shaft and the gearbox.

[0012] In order to facilitate the recovery of lubricating oil and accelerate the flow of air in the cabin, it further includes a driving bevel gear rotatably connected to the adjusting cylinder, the driving bevel gear is connected to the shaft end of the driven wheel, the adjusting cylinder is internally rotatably connected with a two-way reciprocating screw, the two-way reciprocating screw is fixedly connected with a driven bevel gear meshing with the driving bevel gear, the two-way reciprocating screw is symmetrically provided with a piston plate, the two-way reciprocating screw is symmetrically provided with an oil drain port connected to the oil storage tank on the side of the adjusting cylinder close to the recovery part, the first exhaust port and the second exhaust port are symmetrically provided on the side of the adjusting cylinder away from the recovery part, and an air inlet is symmetrically provided between the adjusting cylinder and the cabin, wherein the oil drain port, the air inlet and the first exhaust port are all provided with a one-way valve, the second exhaust port is provided with a pressure relief valve, the first exhaust port is connected with a side of the oil storage tank close to the movable sealing plate, and the piston plate is tightly fitted to the inner wall of the adjusting cylinder.

[0013] In order to ensure normal air flow in the cabin and achieve heat dissipation of internal equipment, it further includes a plurality of vents opened on the cabin, the interior of the vents is fixedly connected with a filter, and the vents are located below the cabin.

[0014] In order to facilitate the inspection and adjustment of the overall angle of the equipment, it further includes a base rotatably connected to the bottom of the cabin, an inspection hole is opened between the base and the cabin, and a driving device is arranged on the side of the cabin close to the base. The driving device is electrically connected to the electrical box, and the driving device can drive the cabin and the base to rotate relative to each other.

[0015] A wind power generation system of a wind power generation device comprises a weather vane, which is fixedly connected to a side of a nacelle away from an impeller seat, and further comprises: a weather vane sensing unit and a direction control unit, wherein the weather vane sensing unit is arranged on the weather vane, and the direction control unit comprises a driving device at the bottom of the nacelle, the driving device is electrically connected to the weather vane sensing unit, and is used to control the rotation direction and rotation angle of the driving device, and adjust the orientation of the blades to make them opposite to the wind direction; a cooling acceleration unit, wherein the cooling acceleration unit comprises a partial loss reduction unit and a vent, and is used to accelerate the air flow in the nacelle, and accelerate the heat dissipation of a gearbox and a generator set, wherein the speed sensing unit is used to sense the rotation speed of the blades and the rotating shaft, and when the rotation speed reaches a threshold value, the loss reduction unit is driven to rotate, and lubricating oil is sprayed to the connection between the rotating shaft and the nacelle and the connection between the rotating shaft and the gearbox, wherein the rotation sensing unit can drive the angle adjustment unit to rotate in different directions, and is used to adjust the relative angle between the blades and the impeller seat, and improve the utilization rate of wind power while ensuring the normal operation of the equipment.

[0016] Compared with the prior art, the present invention provides a wind power generation device and a wind power generation system, which have the following beneficial effects:

[0017] 1. The wind power generation device can sense the rotation speed of the blades through the rotation speed sensing unit, and control the rotation direction of the angle adjustment unit according to the rotation speed of the blades to adjust the overlap area between the blades and the wind direction. When the rotation speed is too fast, while ensuring the stability of wind power generation, the vibration of the whole machine structure can be avoided, thereby improving its safety and reliability. When the rotation speed is too slow, the overlap area between the blades and the wind direction is increased to a certain extent, thereby improving the utilization rate of wind energy.

[0018] 2. For this wind power generation device, when the blade speed is too fast, the speed sensing unit can drive the loss reduction unit to rotate. On the one hand, it can spray lubricating oil to the connection between the shaft and the nacelle and the shaft and the gearbox to reduce the wear of the equipment and further improve the safety and reliability of the equipment operation. On the other hand, it can cool the connection to ensure the stability of the equipment operation. It can also recycle excess lubricating oil to reduce the waste of lubricating oil and prevent the lubricating oil from polluting the equipment.

[0019] 3. The wind power generation device can draw external air into the cabin through the loss reduction unit to increase the pressure in the cabin, and then discharge the gas in the cabin through the vents, thereby accelerating the flow of air in the cabin and improving the heat dissipation effect of the equipment when rotating at high speed, which is beneficial to the normal operation of the equipment.

[0020] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can overcome the problems of low wind energy utilization rate, poor safety and reliability of the whole machine structure, and short equipment service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a wind power generation device proposed by the present invention.

[0022] Figure 2 This is a schematic diagram of the main structure of a wind power generation device proposed by the present invention.

[0023] Figure 3 A partial structural diagram of a wind power generation device proposed by the present invention Figure 1 .

[0024] Figure 4 A partial structural diagram of a wind power generation device proposed by the present invention Figure 2 .

[0025] Figure 5 The figure is a schematic cross-sectional structure diagram of a driving wheel in a wind power generation device proposed by the present invention.

[0026] Figure 6This is a schematic cross-sectional structure diagram of an oil storage tank and a regulating cylinder in a wind power generation device proposed by the present invention.

[0027] Figure 7 The present invention is a schematic diagram of a partial cross-sectional structure of an impeller seat in a wind power generation device proposed by the present invention.

[0028] Figure 8 A wind power generation device proposed by the present invention Figure 2 Schematic diagram of the structure of part A.

[0029] Fig. 9 A wind power generation device proposed by the present invention Figure 6 Schematic diagram of the structure of part B.

[0030] Fig.10 A system block diagram of a wind power generation system of a wind power generation device proposed by the present invention.

[0031] In the figure: 1, cabin; 2, base; 3, weather vane; 4, shaft; 5, impeller seat; 6, rotating block; 7, blades; 8, inspection hole; 9, gearbox; 10, generator set; 11, electrical box; 12, vent; 13, filter; 14, speed sensing unit; 141, drive wheel; 142, mounting wheel; 143, inner ratchet; 144, ratchet; 145, counterweight; 146, spring; 147, positioning sensor; 1 48. Adjustment switch; 15. Driven wheel; 16. Belt; 17. Oil storage tank; 18. Adjustment cylinder; 19. Movable sealing plate; 20. Nozzle; 21. Recovery part; 22. Driving bevel gear; 23. Bidirectional reciprocating screw; 24. Driven bevel gear; 25. Piston plate; 26. Oil drain port; 27. Air inlet; 28. First exhaust port; 29. ​​Second exhaust port; 30. Driving motor; 31. End gear; 32. Adjustment gear. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Embodiment 1:

[0035] Reference Figure 1-Figure 9 A wind power generation device includes a nacelle 1, and also includes: a power generation unit arranged in the nacelle 1, the wind can drive the power generation unit to rotate, and is used to convert wind energy into mechanical energy, and then convert the mechanical energy into electrical energy; a speed sensing unit 14 arranged on the power generation unit, and is used to sense the rotation speed of the power generation unit; an angle adjustment unit arranged on the power generation unit, the angle adjustment unit is electrically connected to the rotation sensing unit, and is used to adjust the size of the overlap between the power generation unit and the wind direction; a loss reduction unit arranged in the nacelle 1, when the power generation unit rotates to a threshold speed, the speed sensing unit 14 can drive the loss reduction unit to rotate, and is used to add lubricating oil to the power generation unit and accelerate the air circulation in the nacelle 1.

[0036] Reference Figure 1 , Figure 3 and Figure 4 The power generation part includes a rotating shaft 4 rotatably connected to the nacelle 1, the end of the rotating shaft 4 extends to the outside of the nacelle 1, and the end of the rotating shaft 4 is fixedly connected to an impeller seat 5, and a plurality of rotating blocks 6 are rotatably connected to the impeller seat 5, and blades 7 are fixedly connected to the rotating blocks 6. A gearbox 9 connected to the rotating shaft 4 is fixedly connected inside the nacelle 1, a generator set 10 connected to the gearbox 9 is fixedly connected inside the nacelle 1, and an electrical box 11 electrically connected to the generator set 10 is fixedly connected inside the nacelle 1.

[0037] The blades 7 drive the shaft 4 to rotate under the action of wind force, and after passing through the gearbox 9, stably drive the generator set 10 to rotate, thereby realizing the conversion of wind force into electricity, and realizing the storage and transmission of electricity through the electrical box 11. Among them, the specific structure of the gearbox 9 and the electrical box 11 can refer to the technical solutions in the prior art, and the technicians in this field can know it, so it will not be elaborated here. It needs to be explained that in order to ensure the stable rotation of the blades 7, the surface of the blades 7 is usually inclined to improve the fluidity of the wind on its surface. The number of blades 7 is not limited here, and the best is three to four groups.

[0038] Reference Figure 2 , Figure 5 and Figure 8The speed sensing unit 14 includes a driving wheel 141 rotatably connected to the rotating shaft 4, a mounting wheel 142 is fixedly connected to one side of the rotating shaft 4 close to the driving wheel 141, an inner ratchet 143 is provided on one side of the driving wheel 141 close to the mounting wheel 142, a plurality of groups of ratchet pawls 144 are rotatably connected to the mounting wheel 142, a counterweight 145 is fixedly connected to the ratchet pawl 144, a spring 146 is fixedly connected between the ratchet pawl 144 and the mounting wheel 142, and the mounting wheel 142 is divided into two sides close to the ratchet pawl 144. A positioning sensor 147 and an adjustment switch 148 are separately provided, wherein the bending direction of the pawl 144 is the same as the rotation direction of the rotating shaft 4, the inner ratchet 143 matches the pawl 144, the positioning sensor 147 is located on the side of the pawl 144 away from the bending direction, and the adjustment switch 148 is located on the side of the pawl 144 close to the bending direction. It also includes a driven wheel 15 rotatably connected to the side of the cabin 1 close to the driving wheel 141, and a belt 16 is sleeved between the driven wheel 15 and the driving wheel 141.

[0039] When the rotation speed of the shaft 4 is within the normal range (i.e. the wind force is in a stable or slightly fluctuating state), the centrifugal force applied to the pawl 144 is small, and under the action of the spring 146, the pawl 144 is sufficient to be disengaged from the regulating switch 148, but at this time the pawl 144 will not contact the inner ratchet 143, and the driving wheel 141 will not rotate; when the rotation speed of the shaft 4 is relatively high, the centrifugal force applied to the pawl 144 is large, causing it to contact the inner ratchet 143, thereby driving the driving wheel 141 to rotate. During this process, the positioning sensing member 147 can prevent the pawl 144 from disengaging from the inner ratchet 143 in the reverse direction, and at the same time start the driving motor 30 to rotate forward. When the rotation speed of the shaft 4 is relatively low, under the action of the spring 146, the pawl 144 contacts the regulating switch 148, controlling the driving motor 30 to rotate in the reverse direction, thereby adjusting the relative angle between the blade 7 and the wind direction, while ensuring the utilization rate of wind energy, avoiding vibration of the entire machine.

[0040] Reference Figure 1 and Figure 7 The angle adjustment unit includes a driving motor 30 fixedly connected to the impeller seat 5, and an end gear 31 is fixedly connected to the output end of the driving motor 30. An adjusting gear 32 meshing with the end gear 31 is fixedly connected to the end of the rotating block 6 close to the driving motor 30, wherein the driving motor 30 is electrically connected to the positioning sensor 147, the adjusting switch 148 and the electrical box 11. The electrical box 11 is used to supply energy to the driving motor 30, and the positioning sensor 147 and the adjusting switch 148 are used to control the rotation and rotation direction of the driving motor 30.

[0041] Reference Figure 6The loss reduction unit includes an oil storage tank 17 and an adjusting cylinder 18 fixedly connected to the cabin 1. The adjusting cylinder 18 is located at the bottom of the cabin 1, and the oil storage tank 17 is located above the adjusting cylinder 18. The oil storage tank 17 is in an open ring shape, and the opening of the oil storage tank 17 is close to the adjusting cylinder 18. The interior of the oil storage tank 17 is symmetrically and slidably connected with a movable sealing plate 19, and a plurality of groups of nozzles 20 are symmetrically arranged above the inner side of the oil storage tank 17. A recovery component 21 connected to the adjusting cylinder 18 is fixedly connected between the opening of the oil storage tank 17 and the adjusting cylinder 18, and a one-way valve is arranged inside the recovery component 21. The nozzle 20 is close to the connection between the rotating shaft 4 and the cabin 1 and the connection between the rotating shaft 4 and the gearbox 9.

[0042] It should be explained that the one-way valve is a conventional means in the prior art and is therefore not described in detail. By adjusting the air pressure between the movable sealing plate 19 and the oil storage tank 17, the stable lubricating oil inside can be sprayed from the nozzle 20 to the connection between the rotating shaft 4 and the cabin 1 and the rotating shaft 4 and the gearbox 9, thereby achieving the effect of reducing the wear of the rotating shaft 4. In addition, the excess lubricating oil can also be recovered through the recovery component 21.

[0043] Reference Figure 6 and Fig. 9 , and also includes a driving bevel gear 22 rotatably connected in the adjusting cylinder 18, the driving bevel gear 22 is connected to the shaft end of the driven wheel 15, the adjusting cylinder 18 is internally rotatably connected with a bidirectional reciprocating screw 23, the bidirectional reciprocating screw 23 is fixedly connected with a driven bevel gear 24 meshing with the driving bevel gear 22, the bidirectional reciprocating screw 23 is symmetrically provided with a piston plate 25, the side of the adjusting cylinder 18 close to the recovery member 21 is symmetrically provided with an oil discharge port 26 connected to the oil storage tank 17, and the side of the adjusting cylinder 18 away from the recovery member 21 is symmetrically provided with a first exhaust port 28 and a second exhaust port 29, an air inlet 27 is symmetrically provided between the regulating cylinder 18 and the cabin 1, wherein the oil discharge port 26, the air inlet 27 and the first exhaust port 28 are all provided with a one-way valve, the second exhaust port 29 is provided with a pressure relief valve, the first exhaust port 28 is connected to the side of the oil storage tank 17 close to the movable sealing plate 19, the piston plate 25 is tightly fitted to the inner wall of the regulating cylinder 18, and also includes a plurality of ventilation ports 12 opened on the cabin 1, the interior of the ventilation ports 12 is fixedly connected with a filter screen 13, and the ventilation ports 12 are located below the cabin 1.

[0044] When the rotation speed of the rotating shaft 4 is too fast, the bidirectional reciprocating screw 23 is driven to rotate by driving the bevel gear 22 and the driven bevel gear 24, and the piston plates 25 on both sides are driven to move back and forth, which can not only realize the recovery of excess lubricating oil, but also increase the pressure between the movable sealing plate 19 and the oil storage tank 17, realize the self-spraying of the lubricating oil, and at the same time draw the external gas into the cabin 1 to accelerate the flow of gas in the cabin 1. It should be explained that a protrusion matching the bidirectional reciprocating screw 23 is provided on the piston plate 25, and a sealed connection method is adopted between the piston plate 25 and the bidirectional reciprocating screw 23. This is a conventional method in the prior art, so it will not be elaborated.

[0045] Reference Figure 3-Figure 4 , and also includes a base 2 rotatably connected to the bottom of the cabin 1, an inspection hole 8 is opened between the base 2 and the cabin 1, and a driving device is provided on the side of the cabin 1 close to the base 2. The driving device is electrically connected to the electrical box 11, and the driving device can drive the cabin 1 and the base 2 to rotate relative to each other.

[0046] The base 2 is usually fixed on a tower, and the cabin 1 can be entered through a climbing ladder in the tower to facilitate maintenance of equipment in the cabin 1.

[0047] In the present invention, when wind power generation is carried out, the cabin 1 is fixed on the tower as a whole, and the flow of wind drives the blades 7 and the rotating shaft 4 to rotate. If the rotation speed is fast, the centrifugal force on the pawl 144 is large, and it will contact with the inner ratchet 143, driving the driving wheel 141 to rotate, and driving the driving bevel gear 22 to rotate through the belt 16 and the driven wheel 15, and then driving the two-way reciprocating screw 23 to rotate. Through the compression of the space on both sides by the piston plate 25, the outside air is added to the space between the movable sealing plate 19 and the oil storage tank 17, so that the lubricating oil inside is sprayed to the connection between the rotating shaft 4 and the cabin 1 and the rotating shaft 4 and the gearbox 9 through the nozzle 20, thereby reducing the wear of the rotating shaft 4 and ensuring the stability of the equipment operation. At the same time, it can also have the effect of cooling the rotating shaft 4 and prolonging the service life of the rotating shaft 4; at the same time, part of the outside air can be discharged into the cabin 1, so that the air in the cabin 1 is discharged through the vent 12, thereby improving the heat dissipation effect of the equipment inside the cabin 1;

[0048] In addition, the contact between the pawl 144 and the positioning sensor 147 can also start the drive motor 30, drive the end gear 31 to rotate in the forward direction, and drive the adjusting gear 32 to rotate, thereby adjusting the angle of the blade 7, reducing the impact of strong winds on the blade 7, and avoiding vibration of the entire machine, thereby ensuring the stability of the equipment operation and extending the service life of the equipment; when the speed of the shaft 4 is low (that is, the wind force is small), the drive motor 30 is controlled to rotate in the opposite direction through the adjustment switch 148, increasing the contact area between the wind and the blade 7, thereby accelerating the rotation speed of the blade 7 and the shaft 4, thereby achieving the effect of improving the utilization rate of wind energy.

[0049] Embodiment 2:

[0050] Reference Fig.10 A wind power generation system of a wind power generation device includes a weather vane 3, which is fixedly connected to a side of a nacelle 1 away from an impeller seat 5, and also includes: a weather vane sensing unit and a direction control unit, the weather vane sensing unit is arranged on the weather vane 3, the direction control unit includes a driving device at the bottom of the nacelle 1, the driving device and the weather vane sensing unit are electrically connected, and is used to control the rotation direction and rotation angle of the driving device, and adjust the direction of the blade 7 to make it opposite to the wind direction; a cooling acceleration unit, the cooling acceleration unit includes a partial loss reduction unit and a vent 12, which is used to accelerate the air flow in the nacelle 1 and accelerate the heat dissipation of a gearbox 9 and a generator set 10, a speed sensing unit 14 is used to sense the rotation speed of the blade 7 and the shaft 4, when the rotation speed reaches a threshold, it will drive the loss reduction unit to rotate, and spray lubricating oil to the connection between the shaft 4 and the nacelle 1 and the connection between the shaft 4 and the gearbox 9, wherein the rotation sensing unit can drive the angle adjustment unit to rotate in different directions, and is used to adjust the relative angle between the blade 7 and the impeller seat 5, while ensuring the normal operation of the equipment, improving the utilization rate of wind power.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind power generation device, comprising a nacelle (1), characterized in that: Also includes: A power generation unit is arranged in the nacelle (1), and wind power can drive the power generation unit to rotate, so as to convert wind energy into mechanical energy, and then convert the mechanical energy into electrical energy; A rotation speed sensing unit (14) disposed on the power generation part, used for sensing the rotation speed of the power generation part; An angle adjustment unit is provided on the power generation part, the angle adjustment unit is electrically connected to the rotation sensing unit, and is used to adjust the overlap size between the power generation part and the wind direction; A loss reduction unit is arranged in the cabin (1); when the power generation unit rotates to a threshold speed, the rotation speed sensing unit (14) can drive the loss reduction unit to rotate, so as to add lubricating oil to the power generation unit and accelerate the air circulation in the cabin (1).

2. A wind power generation device according to claim 1, characterized in that: The power generation unit comprises a rotating shaft (4) rotatably connected to the nacelle (1), the end of the rotating shaft (4) extending to the outside of the nacelle (1), and the end of the rotating shaft (4) is fixedly connected to an impeller seat (5), a plurality of rotating blocks (6) are rotatably connected to the impeller seat (5), and blades (7) are fixedly connected to the rotating blocks (6), the interior of the nacelle (1) is fixedly connected to a gearbox (9) connected to the rotating shaft (4), the interior of the nacelle (1) is fixedly connected to a generator set (10) connected to the gearbox (9), and the interior of the nacelle (1) is fixedly connected to an electrical box (11) electrically connected to the generator set (10).

3. A wind power generation device according to claim 2, characterized in that: The rotation speed sensing unit (14) comprises a driving wheel (141) rotatably connected to a rotating shaft (4); a mounting wheel (142) is fixedly connected to one side of the rotating shaft (4) close to the driving wheel (141); an inner ratchet (143) is arranged on one side of the driving wheel (141) close to the mounting wheel (142); a plurality of groups of ratchets (144) are rotatably connected to the mounting wheel (142); a counterweight (145) is fixedly connected to the ratchets (144); a spring (146) is fixedly connected between the ratchets (144) and the mounting wheel (142); and positioning sensing components (147) and an adjustment switch (148) are respectively arranged on both sides of the mounting wheel (142) close to the ratchets (144). The bending direction of the pawl (144) is the same as the rotation direction of the rotating shaft (4), the inner ratchet (143) matches the pawl (144), the positioning sensor (147) is located on the side of the pawl (144) away from the bending direction, and the adjustment switch (148) is located on the side of the pawl (144) close to the bending direction.

4. A wind power generation device according to claim 3, characterized in that: It also comprises a driven wheel (15) rotatably connected to a side of the cabin (1) close to the driving wheel (141), and a belt (16) is sleeved between the driven wheel (15) and the driving wheel (141).

5. A wind power generation device according to claim 3, characterized in that: The angle adjustment unit comprises a drive motor (30) fixedly connected to the impeller seat (5), an output end of the drive motor (30) being fixedly connected to an end face gear (31), and an end of the rotating block (6) close to the drive motor (30) being fixedly connected to an adjustment gear (32) meshing with the end face gear (31). The drive motor (30) is electrically connected to the positioning sensor (147), the regulating switch (148) and the electrical box (11); the electrical box (11) is used to supply energy to the drive motor (30); and the positioning sensor (147) and the regulating switch (148) are used to control the rotation and rotation direction of the drive motor (30).

6. A wind power generation device according to claim 4, characterized in that: The loss reduction unit comprises an oil storage tank (17) and an adjusting cylinder (18) fixedly connected in the cabin (1); the adjusting cylinder (18) is located at the bottom of the cabin (1); the oil storage tank (17) is located above the adjusting cylinder (18); and the oil storage tank (17) is in an open ring shape; the opening of the oil storage tank (17) is close to the adjusting cylinder (18); the interior of the oil storage tank (17) is symmetrically slidably connected with a movable sealing plate (19); a plurality of groups of nozzles (20) are symmetrically arranged above the inner side of the oil storage tank (17); a recovery component (21) connected to the adjusting cylinder (18) is fixedly connected between the opening of the oil storage tank (17) and the adjusting cylinder (18); a one-way valve is arranged inside the recovery component (21); and the nozzle (20) is close to the connection between the rotating shaft (4) and the cabin (1) and the connection between the rotating shaft (4) and the gearbox (9).

7. A wind power generation device according to claim 6, characterized in that: The invention also comprises a driving bevel gear (22) rotatably connected to the adjusting cylinder (18), wherein the driving bevel gear (22) is connected to the shaft end of the driven wheel (15), the adjusting cylinder (18) is internally rotatably connected to a bidirectional reciprocating screw (23), the bidirectional reciprocating screw (23) is fixedly connected to a driven bevel gear (24) meshing with the driving bevel gear (22), the bidirectional reciprocating screw (23) is symmetrically provided with a piston plate (25), the side of the adjusting cylinder (18) close to the recovery member (21) is symmetrically provided with an oil discharge port (26) connected to the oil storage tank (17), the side of the adjusting cylinder (18) far from the recovery member (21) is symmetrically provided with a first exhaust port (28) and a second exhaust port (29), and an air inlet (27) is symmetrically provided between the adjusting cylinder (18) and the cabin (1), The oil discharge port (26), the air inlet (27) and the first exhaust port (28) are each provided with a one-way valve, the second exhaust port (29) is provided with a pressure relief valve, the first exhaust port (28) is connected to a side of the oil storage tank (17) close to the movable sealing plate (19), and the piston plate (25) is tightly fitted to the inner wall of the regulating cylinder (18).

8. A wind power generation device according to claim 1, characterized in that: It also comprises a plurality of groups of ventilation holes (12) opened on the cabin (1), wherein a filter screen (13) is fixedly connected to the interior of the ventilation holes (12), and the ventilation holes (12) are located below the cabin (1).

9. A wind power generation device according to claim 2, characterized in that: It also includes a base (2) rotatably connected to the bottom of the cabin (1), an inspection hole (8) is provided between the base (2) and the cabin (1), a driving device is provided on a side of the cabin (1) close to the base (2), the driving device is electrically connected to the electrical box (11), and the driving device can drive the cabin (1) and the base (2) to rotate relative to each other.

10. A wind power generation system comprising the wind power generation device according to any one of claims 1 to 9, characterized in that: The invention comprises a weather vane (3), wherein the weather vane (3) is fixedly connected to a side of the nacelle (1) away from the impeller seat (5), and further comprises: A wind vane sensing unit and a direction control unit, wherein the wind vane sensing unit is arranged on the wind vane (3), and the direction control unit comprises a driving device at the bottom of the nacelle (1), wherein the driving device is electrically connected to the wind vane sensing unit and is used to control the rotation direction and rotation angle of the driving device and adjust the orientation of the blade (7) so that it is opposite to the wind direction; A cooling acceleration unit, the cooling acceleration unit comprising a partial loss reduction unit and a vent (12), used to accelerate the air flow in the cabin (1), accelerate the heat dissipation of the gearbox (9) and the generator set (10), the rotation speed sensing unit (14) is used to sense the rotation speed of the blade (7) and the shaft (4), when the rotation speed reaches a threshold value, it will drive the loss reduction unit to rotate, and spray lubricating oil to the connection between the shaft (4) and the cabin (1) and the connection between the shaft (4) and the gearbox (9), The rotation sensing unit can drive the angle adjustment unit to rotate in different directions, so as to adjust the relative angle between the blade (7) and the impeller seat (5), thereby improving the utilization rate of wind power while ensuring the normal operation of the equipment.

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