Vertical axis wind driven generator with shutter impeller

Abstract

The invention discloses a vertical axis wind driven generator of a shutter impeller. The generator impeller is mainly composed of a main shaft, a frame, blades, a magnetoelectric control system and a lifting force plate. The main shaft is composed of a hollow square tube and a flange plate and is connected with a fan tower through a transmission shaft. Each frame comprises a cantilever, a fixing plate, a bearing seat and a supporting rod and is used for supporting and fixing the blades. The blade has a hollow fish-shaped section, and the angle can be automatically adjusted under the action of wind power. The magnetoelectric control system can protect the equipment in strong wind, and the lifting plate can assist the impeller in rotating. During working, the blades in the wind catching area are limited by wind power and structures to be perpendicular to the wind direction, the blades in the wind sheltering area are parallel to the wind direction, and efficient wind catching and resistance avoiding are achieved. In addition, all parts of the impeller are made of different materials, the main shaft and the frame are made of aluminum alloy sections, other components are made of common steel, the blades are made of light basalt materials, and cost and manufacturing convenience are both considered while the performance is guaranteed. The invention effectively solves the problems of low power generation efficiency, poor stability and the like caused by design defects of an impeller or a blade of an existing vertical-axis wind turbine, has remarkable technical advantages, and belongs to the technical field of wind power and wind power.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly to a vertical-axis wind turbine with a louver impeller. The generator mainly consists of components such as a main shaft, a frame, blades, and a magnetoelectric control system. Its blades can automatically adjust the angle under the action of wind force to achieve efficient wind capture and wind resistance avoidance. Background Art

[0002] With the continuous growth of the global demand for clean energy, wind power generation, as an important form of renewable energy utilization, has attracted much attention. Vertical-axis wind turbines have shown broad application prospects in fields such as distributed power generation and power supply in remote areas due to their advantages of simple structure, no need for a wind-facing device, low noise, and convenient installation and maintenance.

[0003] However, there are many deficiencies in the existing vertical-axis wind turbines in terms of impeller or blade design. Traditional impellers or blades usually have a fixed shape and angle. No matter how their shape and angle are set, under the push of wind force, the blades on one side of the main shaft are in the wind-capturing state, while the other side is in the upwind state, generating wind resistance and offsetting part of the torsional moment. In addition, the aerodynamic performance of fixed impellers or blades is poor under different wind conditions, making it difficult to achieve efficient utilization of wind energy. In summary, the problems existing in the design of the impellers or blades of the existing vertical-axis wind turbines limit their power generation efficiency and stability under different wind conditions, and there is an urgent need for a new type of impeller or blade structure to solve these problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertical-axis wind turbine with a louver-type impeller and blades. The generator consists of a main shaft, a frame, blades, and a magnetoelectric control system. When facing the wind, in the wind-capturing area on one side of the main shaft, the blades can automatically be perpendicular to the wind direction without the control of the electrical system, thus effectively capturing the wind; in the wind-sheltering area on the other side of the main shaft, the blades can also automatically be parallel to the wind direction without the control of the electrical system to eliminate wind resistance. The present invention aims to solve the problems that the impellers or blades of the existing vertical-axis wind turbines cannot be flexibly adjusted according to the wind direction, resulting in limited wind-capturing ability, low main shaft torque, and low power generation efficiency.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] 1. Main Shaft: The main shaft is composed of a hollow square tube and a flange. The flange is fixed at the lower part of the hollow square tube and is used for flange connection with the transmission shaft, and the transmission shaft is connected to the combined bearing at the upper part of the wind turbine tower barrel.

[0007] 2. Frame (4 sets): Each frame consists of cantilever (2 pieces), fixed plate, bearing seat (4 pieces) and support rod (2 pieces). The upper and lower cantilever are square tubes, and 4 bearing seats are provided under the upper cantilever and on the lower cantilever. The fixed plates on the inner side of the upper and lower cantilever are installed on the outer tube wall of the main shaft. The support rod (2 pieces) is used to connect the inner and outer sides of the corresponding upper and lower cantilever, and at the same time, it plays a role in limiting the rotation of the blade.

[0008] 3. Blade: The blade cross section is hollow fish-shaped, with a rotating shaft running through the upper and lower ends of the fish head, and bearings installed on the upper and lower ends of the blade. The four blade units are installed between the upper and lower cantilevers of the frame.

[0009] 4. Magnetoelectric control structure: The inner support rod can slide up and down in the slide grooves of the upper and lower frames, and the middle part is connected to the magnetic round rod, the magnetic round rod extends into the solenoid, and the solenoid is installed on the wall of the impeller main shaft tube.

[0010] 5. Lifting plate: A lifting plate is provided on the upper part of each upper cantilever. In the wind-catching area, the lifting plate opens upward with the wind, forming an angle with the wind direction; in the wind-sheltered area, the lifting plate opens downward with the wind, parallel to the wind direction.

[0011] Under the action of wind, the blades rotate naturally around the rotation axis. In the wind-catching area on one side of the main shaft, the outer blades rotate naturally inward, but are blocked by the adjacent blades, and the innermost blades are blocked by the inner support rod, so that multiple blades are then perpendicular to the wind direction. In the wind-sheltered area on the other side, multiple blades are unobstructed and parallel to the wind direction. This unique design allows the blades to obtain the best windward angle and the maximum wind-receiving area in real time, generating the maximum torque on the impeller main shaft, thereby improving the power generation efficiency.

[0012] The lift plate generates lift on the impeller, reducing the pressure on the impeller bearing and making it easier for the impeller to rotate. In strong winds or typhoons, the wind speed sensor adjusts the solenoid current through the controller, which can control the magnetic round rod to extend into the solenoid, pull the inner support rod to move inward along the upper and lower cantilever slides, and break away from the obstruction of the innermost blades. Each blade swings with the wind and is parallel to the wind direction, eliminating the torque on the main shaft, thereby effectively protecting the equipment from damage and greatly extending the service life of the equipment.

[0013] The vertical axis wind turbine with shutter impeller of the present invention has a main shaft and a frame made of aluminum alloy profiles, other components made of ordinary steel, and blades made of hollow basalt. The overall structure is simple, easy to process and manufacture, and other parts of the wind turbine are similar to the prior art, which is easy for technicians in the wind power industry to understand and implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : is a schematic diagram of the overall structure of the present invention. In the figure, 1 is the main shaft, 2 is the blade, 3 is the lift plate, and 4 is the cantilever frame.

[0015] Figure 2 : This is a schematic diagram of part B of the present invention, i.e., the lift plate. In the figure, 1 is the main shaft, 2 is the cantilever, 3 is the clamping plate, 4 is the lift plate, and 5 is the blade.

[0016] Figure 3 : This is a schematic diagram of part C of the present invention, i.e., the magnetoelectric control system. In the figure, 1 is the magnetic round rod, 2 is the solenoid, and 3 is the inner support rod.

[0017] Figure 4 : This is a schematic diagram of the A-A cross-section of the present invention. In the figure, 1 is the wind-catching state, 2 is the state of gradually leaving the wind, 3 is the windward state, and 4 is the state of gradually facing the wind.

[0018] Figure 5 : This is a schematic diagram of part D of the present invention, i.e., the blade facing the wind. In the figure, 1 is the lower cantilever, 2 is the blade (end face), 3 is the inner support rod, and 4 is the magnetoelectric control system. Detailed implementation manner

[0019] 1. Manufacturing of the main shaft: Select a metal square tube and a metal plate, process them according to the design requirements, and then weld the two together to form the main shaft.

[0020] 2. Manufacturing of the frame: Use section steel, steel plates, and round steel rods respectively to process and manufacture the cantilever, fixed plate, bearing seat, and support rod. Weld the bearing seat to the corresponding position of the cantilever, and weld the magnetic round rod to the middle of the inner support rod.

[0021] 3. Manufacturing of the blade: Embed the round steel rod in the hollow basalt, and use a mold to process the blade so that the round steel rod penetrates through the upper and lower end faces of the blade.

[0022] 4. Installation of the blade: Install the bearing at the corresponding position of the upper and lower cantilevers, then install the blade rotating shaft in the bearings of the bearing seats of the upper and lower cantilevers, and then use the support rod to connect and fix the upper and lower cantilevers.

[0023] 5. Installation of the frame: Install the fixed plate of the frame cantilever at the corresponding position of the main shaft pipe wall. Pay attention to the installation direction of the upper and lower cantilevers. After installation, manually rotate each blade to ensure that the blade can rotate easily.

[0024] 6. Installation of the magnetoelectric control system: Insert the magnetoelectric round rod into the solenoid, and install the solenoid at the corresponding position of the main shaft.

Claims

1. A vertical axis wind turbine with a louvered impeller, wherein the impeller comprises: Spindle: It is composed of a hollow square tube and a flange, wherein the flange is fixed at the lower part of the hollow square tube and is used to be connected with the transmission shaft flange, and the transmission shaft is connected with the combined bearing at the upper part of the wind turbine tower; Frame: There are 4 groups, each frame consists of 2 cantilevers, a fixed plate, 4 bearing seats and 2 support rods; the upper and lower cantilevers are square tubes, and 4 bearing seats are respectively arranged under the upper cantilever and on the lower cantilever. The fixed plates on the inner sides of the upper and lower cantilever are installed on the outer tube wall of the main shaft. The 2 support rods connect the inner and outer sides of the corresponding upper and lower cantilevers and play a limiting role in the rotation of the blades; Blades: The cross-section is hollow fish-shaped, and a rotating shaft is provided through the upper and lower ends of the fish head. Bearings are installed on the upper and lower end surfaces of the blades, and 4 blade units are installed between the upper and lower cantilevers of the frame; Magnetoelectric control structure: The inner support rod can slide up and down in the slide grooves of the upper and lower frames, and the middle part is connected to the magnetic round rod, the magnetic round rod extends into the solenoid, and the solenoid is installed on the tube wall of the impeller main shaft; Lift plate: It is arranged on the upper part of each upper cantilever. In the wind catching area, the lift plate opens upward with the wind to form an angle with the wind direction. In the wind shelter area, the lift plate moves downward with the wind and is parallel to the wind direction.

2. The vertical axis wind turbine with a shutter impeller according to claim 1, wherein the impeller is characterized by: Under the action of wind, the blades located in the wind-catching area on one side of the main shaft, the blades on the outer side naturally rotate inwards, and are blocked by the adjacent blades and the inner support rods, so that multiple blades are perpendicular to the wind direction; The blades located in the wind shelter area on the other side of the main axis are unobstructed and parallel to the wind direction.

3. According to the vertical axis wind turbine with shutter impeller as described in claim 1, its impeller is characterized in that: under strong wind or typhoon conditions, the wind speed sensor adjusts the solenoid current through the controller, controls the magnetic round rod to extend into the solenoid, pulls the inner support rod to move inward along the upper and lower cantilever slide grooves, and breaks away from the obstruction of the innermost blade, so that each blade swings with the wind and is parallel to the wind direction.

4. The vertical axis wind turbine with a shutter impeller according to claim 1, wherein the impeller is characterized in that the main shaft and the frame are made of aluminum alloy profiles, the other components are made of ordinary steel, and the blades are made of hollow basalt.

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