Low-wind-speed wind driven generator

Abstract

The utility model discloses a low-wind-speed wind driven generator which comprises a tower installed in a low-wind-speed area, a cabin is rotationally installed on the outer surface of the tower, a blade power generation end is rotationally installed at one end of the cabin, and a wind direction detection steering mechanism is fixedly installed at the other end in the cabin. The wind direction detection end of the wind direction detection steering mechanism penetrates from the cabin to the outer surface and is located at the rear end of the blade power generation end of the cabin. Through the design of the wind direction detection steering mechanism, the wind direction detection steering mechanism can drive the blade power generation end of the cabin to face the front face of the wind direction, the blade power generation end can capture the maximum wind energy, when the blades face the wind direction, airflow can pass through the blades more smoothly, turbulent flow and aerodynamic noise are reduced, and the wind power generation efficiency is improved. And by automatically adjusting the orientation of the blades of the cabin, wind in different directions and at different speeds can be more fully utilized, and the overall benefit of the whole wind power plant is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a low wind speed wind power generator. Background Art

[0002] Wind turbines are devices that convert wind energy into electrical energy. They are mainly composed of blades, generators, mechanical parts and electrical parts. According to the different rotating axes, wind turbines are mainly divided into two categories: horizontal axis wind turbines and vertical axis wind turbines. At present, horizontal axis wind turbines occupy the mainstream position in the market.

[0003] For example, the patent with national authorized patent announcement number CN212202364U discloses a low wind speed wind turbine, including a base, a supporting tube fixedly arranged at the center of the upper end surface of the base, an extension rod movably arranged in the supporting tube, and an adjusting device arranged above the extension rod, the adjusting device including a placing plate and an adjusting plate arranged below the placing plate, a motor is fixedly installed on one side of the adjusting plate, the motor is connected with a threaded shaft through a motor shaft, a first gear is fixedly installed on the end of the threaded shaft away from the motor, a round rod extending into the adjusting plate is fixedly installed in the center of the side of the placing plate facing the adjusting plate, a second gear meshing with the first gear is fixedly installed on the end of the round rod away from the placing plate, the upper end surface of the extension rod is fixedly connected to the lower end surface of the adjusting plate, the low wind speed wind turbine has a reasonable structure, is convenient for adjusting the direction of the fan blades, and is convenient for deicing the shaft in a low temperature environment to avoid affecting the working efficiency of the generator, and has strong practicality.

[0004] However, the above-mentioned low wind speed wind turbine, during the process of generating electricity through wind rotation, cannot rotate the blades of the wind turbine according to the wind direction to rotate them to face the wind direction to capture the maximum wind energy, which will greatly reduce the efficiency of converting wind energy into electrical energy, resulting in reduced power generation, and the blades that are not facing the wind direction will be affected by uneven wind force, increasing mechanical stress. This uneven stress will accelerate the wear of the blades, towers and other structural components, and shorten the service life of the equipment. Utility Model Content

[0005] The utility model aims to provide a low wind speed wind turbine to solve the problem in the background art that the blades of the wind turbine cannot be rotated according to the wind direction to rotate directly opposite to the wind direction to capture the maximum wind energy.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A low wind speed wind turbine comprises: a tower installed in a low wind speed area, a cabin rotatably installed on the outer surface of the tower, a blade power generation end rotatably installed on one end of the cabin, a wind direction detection and steering mechanism fixedly installed on the other end of the cabin, the wind direction detection end of the wind direction detection and steering mechanism extending from the cabin to the outer surface and located at the rear end of the blade power generation end of the cabin.

[0008] Preferably, a sleeve is fixedly mounted on the lower end of the outer surface of the nacelle, a slip ring is fixedly mounted inside the sleeve, the nacelle is rotatably mounted in an annular groove through the slip ring inside the sleeve, and the annular groove is provided on the outer surface of the tower.

[0009] Preferably, the wind direction detection and steering mechanism includes a wind speed and direction sensor, which is fixedly mounted on the outer surface of the cabin, and the signal transmitting end of the wind speed and direction sensor is connected to the signal receiving end of the controller, which is fixedly mounted in the cabin, and the control output end of the controller is electrically connected to the electrical control end of four groups of reduction motors, which are fixedly mounted in the cabin.

[0010] Preferably, a gear column is fixedly installed at one end of the output shaft of the reduction motor, and the gear column passes through the output shaft of the reduction motor to be located in the shroud, and the shroud is fixedly installed on the upper surface of the tower and is sleeved therein, and the gear column is meshed with the gear ring disk, and the gear ring disk is fixedly installed in the shroud.

[0011] Preferably, the blade power generation end in the nacelle can control the reduction motor to drive the slip ring to rotate in the ring groove to be opposite to the wind direction through the wind speed and direction sensor.

[0012] Preferably, the models of the wind speed and direction sensor and controller are NRG Systems#P and SymphoniePRO respectively.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Through the design of the nacelle, tower, slip ring, annular groove and wind direction detection and steering mechanism, during the process of wind power generation, the wind direction will blow on the wind direction detection end of the wind direction detection and steering mechanism, which can make the wind direction detection and steering mechanism mesh with the gear ring disk on the upper surface of the tower for transmission, and can make the wind direction detection and steering mechanism drive the slip ring of the nacelle to rotate in the annular groove opened on the outer surface of the tower, and can make the wind direction detection and steering mechanism drive the blade power generation end of the nacelle to face the front of the wind direction, so that the blade power generation end can capture the maximum wind energy and effectively convert it into electrical energy, so that it can significantly improve the power generation efficiency of the wind turbine, reduce mechanical stress, make the blades evenly stressed, reduce the wear and failure risks of components, and extend the service life of the equipment.

[0015] 2. Through the design of wind speed and direction sensors, controllers, reduction motors and gear columns, during the process of wind power generation, the wind direction will blow on the surface of the wind speed and direction sensors, and the wind speed and direction sensors will rotate with the wind, indicating the current wind direction, and sending the rotation angle signal to the controller, and the controller will determine the direction of the wind according to the data of the wind speed and direction sensors, and the controller will control the four groups of reduction motors through the electronic control end to drive the gear columns to rotate, and the gear columns will mesh and transmit on the outer surface of the gear ring disk, so that the reduction motor can drive the nacelle's slip ring to rotate in the ring groove opened on the outer surface of the tower, and can drive the nacelle's blade power generation end to face the wind direction, so that the blade power generation end can capture the maximum wind energy, and when the blades are facing the wind direction, the airflow will pass through the blades more smoothly, reducing turbulence and aerodynamic noise, which helps to reduce the impact on the surrounding environment, and by automatically adjusting the direction of the nacelle blades, more full use can be made of winds of different directions and speeds, thereby improving the overall efficiency of the entire wind farm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic structural diagram of the gear ring disk and the ring groove of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the sleeve and the slip ring of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the wind direction detection and steering mechanism of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the reduction motor and the gear column of the utility model.

[0021] In the figure: 1, cabin; 101, sleeve; 102, slip ring; 2, tower; 201, ring groove; 202, shroud; 203, gear ring disk; 3, wind direction detection and steering mechanism; 301, wind speed and direction sensor; 302, controller; 303, reduction motor; 304, gear column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5, the utility model provides a technical solution:

[0024] like Figure 1-Figure 3 As shown, a low wind speed wind turbine comprises: a tower 2 installed in a low wind speed area, a cabin 1 is rotatably installed on the outer surface of the tower 2, a blade power generation end is rotatably installed at one end of the cabin 1, and a wind direction detection and steering mechanism 3 is fixedly installed at the other end of the cabin 1, and the wind direction detection end of the wind direction detection and steering mechanism 3 passes through the cabin 1 to the outer surface and is located at the rear end of the blade power generation end of the cabin 1.

[0025] A sleeve 101 is fixedly installed at the lower end of the outer surface of the nacelle 1 , and a slip ring 102 is fixedly installed in the sleeve 101 . The nacelle 1 is rotatably installed in an annular groove 201 through the slip ring 102 in the sleeve 101 . The annular groove 201 is opened on the outer surface of the tower 2 .

[0026] Through the design of the nacelle 1, the tower 2, the slip ring 102, the annular groove 201 and the wind direction detection and steering mechanism 3, during the process of wind power generation, the wind direction will blow on the wind direction detection end of the wind direction detection and steering mechanism 3, so that the wind direction detection and steering mechanism 3 can be meshed and transmitted with the gear ring disk 203 on the upper surface of the tower 2, and the wind direction detection and steering mechanism 3 can drive the slip ring 102 of the nacelle 1 to rotate in the annular groove 201 opened on the outer surface of the tower 2, so that the wind direction detection and steering mechanism 3 can drive the blade power generation end of the nacelle 1 to face the front of the wind direction, so that the blade power generation end can capture the maximum wind energy and effectively convert it into electrical energy, so that it can significantly improve the power generation efficiency of the wind turbine, reduce mechanical stress, make the blades evenly stressed, reduce the wear and failure risks of components, and extend the service life of the equipment.

[0027] like Figure 4-Figure 5 As shown, the wind direction detection and steering mechanism 3 includes a wind speed and direction sensor 301, which is fixedly mounted on the outer surface of the cabin 1. The signal transmitting end of the wind speed and direction sensor 301 is connected to the signal receiving end of the controller 302, which is fixedly mounted in the cabin 1. The control output end of the controller 302 is electrically connected to the electrical control end of four groups of reduction motors 303, which are fixedly mounted in the cabin 1.

[0028] A gear column 304 is fixedly installed at one end of the output shaft of the reduction motor 303. The gear column 304 passes through the output shaft of the reduction motor 303 and is located inside the shroud 202. The shroud 202 is fixedly installed on the upper surface of the tower 2 and is sleeved by the sleeve 101. The gear column 304 is meshed with the gear ring disk 203, and the gear ring disk 203 is fixedly installed in the shroud 202.

[0029] The blade power generation end in the nacelle 1 can control the reduction motor 303 through the wind speed and direction sensor 301 to drive the slip ring 102 to rotate in the ring groove 201 to be opposite to the wind direction.

[0030] The models of the wind speed and direction sensor 301 and the controller 302 are NRG Systems #200P and SymphoniePRO respectively.

[0031] Through the design of the wind speed and direction sensor 301, the controller 302, the reduction motor 303 and the gear column 304, during the process of wind power generation, the wind direction will blow on the surface of the wind speed and direction sensor 301, and the wind speed and direction sensor 301 will rotate with the wind, indicating the current wind direction, and sending the rotation angle signal to the controller 302, and the controller 302 will determine the wind direction according to the data of the wind speed and direction sensor 301, and the controller 302 will control the four groups of reduction motors 303 through the electronic control end to drive the gear column 304 to rotate, and the gear column 304 will rotate. The outer surface of the gear ring disk 203 is meshed with each other for transmission, so that the reduction motor 303 can drive the slip ring 102 of the nacelle 1 to rotate in the ring groove 201 opened on the outer surface of the tower 2, and can drive the blade power generation end of the nacelle 1 to face the wind direction, so that the blade power generation end can capture the maximum wind energy, and when the blade is facing the wind direction, the airflow through the blade will be smoother, reducing turbulence and aerodynamic noise, which helps to reduce the impact on the surrounding environment, and by automatically adjusting the direction of the blades of the nacelle 1, it is possible to make better use of winds of different directions and speeds, thereby improving the overall efficiency of the entire wind farm.

[0032] The working steps of this scheme are summarized and sorted out according to the above technical scheme: when in use, the wind direction will blow on the surface of the wind speed and direction sensor 301, and the wind speed and direction sensor 301 will rotate with the wind, indicating the current wind direction, and sending the rotation angle signal to the controller 302, and the controller 302 will determine the direction of the wind according to the data of the wind speed and direction sensor 301, and the controller 302 will control the four groups of reduction motors 303 through the electronic control end to drive the gear column 304 to rotate, and the gear column 304 will mesh and transmit on the outer surface of the gear ring disk 203, so that the reduction motor 303 can drive the slip ring 102 of the cabin 1 to rotate in the annular groove 201 opened on the outer surface of the tower 2, and can drive the blade power generation end of the cabin 1 to face the front of the wind direction, so that the blade power generation end can capture the maximum wind energy.

[0033] In summary: it can drive the blade power generation end of the nacelle 1 to face the wind direction, so that the blade power generation end can capture the maximum wind energy, and when the blade is facing the wind direction, the airflow will pass through the blade more smoothly, reducing turbulence and aerodynamic noise, and by automatically adjusting the direction of the blades of the nacelle 1, it can make more full use of winds of different directions and speeds, thereby improving the overall efficiency of the entire wind farm.

[0034] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A low wind speed wind turbine, characterized in that: include: A tower (2) is installed in a low wind speed area, wherein a nacelle (1) is rotatably installed on the outer surface of the tower (2), a blade power generation end is rotatably installed on one end of the nacelle (1), and a wind direction detection and steering mechanism (3) is fixedly installed on the other end of the nacelle (1), wherein the wind direction detection end of the wind direction detection and steering mechanism (3) passes through the nacelle (1) to the outer surface and is located at the rear end of the blade power generation end of the nacelle (1).

2. A low wind speed wind turbine according to claim 1, characterized in that: A sleeve (101) is fixedly mounted on the lower end of the outer surface of the nacelle (1), a slip ring (102) is fixedly mounted inside the sleeve (101), and the nacelle (1) is rotatably mounted in an annular groove (201) through the slip ring (102) inside the sleeve (101), and the annular groove (201) is provided on the outer surface of the tower (2).

3. A low wind speed wind turbine according to claim 1, characterized in that: The wind direction detection and steering mechanism (3) comprises a wind speed and direction sensor (301), the wind speed and direction sensor (301) being fixedly mounted on the outer surface of the cabin (1), a signal transmitting end of the wind speed and direction sensor (301) being connected to a signal receiving end of a controller (302), the controller (302) being fixedly mounted in the cabin (1), a control output end of the controller (302) being electrically connected to an electric control end of four groups of reduction motors (303), and the reduction motors (303) being fixedly mounted in the cabin (1).

4. A low wind speed wind turbine according to claim 3, characterized in that: A gear column (304) is fixedly mounted on one end of the output shaft of the reduction motor (303); the gear column (304) passes through the output shaft of the reduction motor (303) and is located inside the shroud (202); the shroud (202) is fixedly mounted on the upper surface of the tower (2) and is sleeved by the sleeve (101); the gear column (304) is meshed with the gear ring disk (203); and the gear ring disk (203) is fixedly mounted inside the shroud (202).

5. A low wind speed wind turbine according to claim 3 or 4, characterized in that: The blade power generation end in the nacelle (1) can control the reduction motor (303) through the wind speed and direction sensor (301) to drive the slip ring (102) to rotate in the ring groove (201) to the direction opposite to the wind direction.

6. A low wind speed wind turbine according to claim 3, characterized in that: The models of the wind speed and direction sensor (301) and the controller (302) are NRG Systems #200P and SymphoniePRO respectively.

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