Vertical axis wind turbine impeller with shell type blades

Abstract

The invention discloses a vertical axis wind turbine impeller with shell type blades. The impeller is mainly composed of an impeller main shaft, a cantilever frame, shell blades, a bidirectional supporting rod, a magnetoelectric component and a mounted bearing. And the impeller main shaft is formed by welding a hollow square tube and a seat plate with an opening. The cantilever frames are located on the two sides of the main shaft, are composed of hollow square pipes, fixing plates and V-shaped flow guide plates and are used for supporting and fixing other components. The shell blade is like a shell, is composed of an inner piece and an outer piece, can be freely opened and closed along with wind and is installed between the upper and lower cantilever frames. The bidirectional supporting rod is connected with the inner and outer shell blades and acts along with blade state change to ensure synchronous opening and closing of the inner and outer blades. The magnetoelectric component comprises a spiral pipe coil and a magnetic push-pull rod and can generate induced current when the blades act. During working, shell blades on one side of the impeller spindle are automatically opened in a wind catching area, the other side of the impeller spindle is automatically closed in a wind sheltering area, the states are exchanged along with rotation of the spindle, the V-shaped guide plate is matched with wind catching, and the wind energy utilization rate is effectively increased. And in strong wind, the system automatically controls the blades to close so as to protect the equipment. The main shaft and the frame are made of light aluminum alloy sections, the shell blades are made of light basalt materials, other parts are made of common metal materials and standard parts, and the wind driven generator has the advantages of being high in wind energy utilization rate, low in starting wind speed, simple in structure, easy to maintain and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly to a vertical-axis wind turbine impeller with shell-shaped blades composed of an impeller main shaft, a cantilever frame, shell-shaped blades, magnetoelectric components, etc. Background Art

[0002] In the field of wind power generation, the impellers of traditional vertical-axis wind turbines generally adopt a fixed-blade structure. Although this structure is relatively simple, it has many obvious defects. Firstly, the wind energy utilization rate is low. Since the fixed blades cannot automatically adjust the angle according to the changes in wind direction and wind speed, a large wind resistance will be generated in the sheltered area, greatly limiting the effective utilization of wind energy. Secondly, the starting wind speed is high. In a low-wind-speed environment, it is difficult for the fixed blades to start, which seriously narrows the applicable range of the wind turbine. Moreover, the noise is large. The fixed blades will generate a large amount of noise during high-speed rotation, causing adverse effects on the surrounding environment. To sum up, the existing traditional vertical-axis wind turbine impellers have significant deficiencies in wind energy utilization efficiency, starting performance, and noise control, and there is an urgent need for a new type of impeller structure to improve these problems. Summary of the Invention

[0003] The core object of the present invention is to provide a vertical-axis wind turbine impeller with shell-shaped blades to effectively solve the prominent problems such as low wind energy utilization rate, high starting wind speed, and large noise in the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] 1. Overall structure: A vertical-axis wind turbine impeller with shell-shaped blades mainly includes an impeller main shaft, a cantilever frame, shell-shaped blades, a bidirectional support rod, a magnetoelectric component, and a pedestal bearing. Among them, cantilever frames are installed on both sides of the impeller main shaft, the shell-shaped blades are installed between the upper and lower cantilever frames, the bidirectional support rod is installed on two opposite shell-shaped blades, the magnetoelectric component passes through the middle of the shell and is installed between the upper and lower cantilevers on both sides and inside the V-shaped flow deflector, and the pedestal bearing is installed at the corresponding position outside the upper and lower cantilevers.

[0006] 2. Impeller main shaft: The impeller main shaft is composed of a hollow square tube and a seat plate. An opening is provided in the middle of the seat plate and welded to the lower end of the square tube.

[0007] 3. Cantilever frame: The cantilever frame is composed of two hollow square tubes, two fixing plates, and a V-shaped flow deflector. The two fixing plates are respectively welded to the inner ends of the two hollow square tubes for installation on the main shaft pipe wall. An opening is provided in the middle of the V-shaped flow deflector and vertically installed at the corresponding position outside the upper and lower square tubes to connect the upper and lower square tubes. The magnetic push rod of the magnetoelectric component extends into the solenoid, the solenoid is installed inside the flow deflector, and the support rods on both sides of the magnetoelectric component are hinged to the inner and outer shell-shaped blades.

[0008] 4. Shell blades: The shell blades are concave-convex plates, shaped like shells, and are composed of two inner and outer sheets. Both the upper and lower parts of the two sheets are provided with rotating shafts, which are respectively installed in the pedestal bearings corresponding to the upper and lower cantilevers. The middle parts of both sheets are provided with hinged rings, and both sheets of the blades can be freely opened or closed by the wind.

[0009] 5. Bi-directional support rods: The outer ends of the bi-directional support rods are respectively hinged to the corresponding rings of the inner and outer shell blades, and the overall structure is similar to an umbrella. When the shell blades open, the bi-directional support rods open outwards; when the shell blades close, the bi-directional support rods contract inwards, so as to ensure the synchronous movement of the inner and outer blades.

[0010] 6. Magnetoelectric components: The magnetoelectric components are composed of a solenoid and a magnetic push rod. The solenoid is installed inside the V-shaped deflector, the magnetic push rod extends into the solenoid, passes through the V-shaped deflector and extends to the outside, and the support rods at both ends of the magnetoelectric mechanism are hinged to the inner and outer shell blades. When the shell blades are automatically opened or closed by the wind, the support rods can drive the magnetic push rod to reciprocate in the solenoid.

[0011] Working principle

[0012] When the wind blows towards the impeller, the shell blades on one side of the impeller main shaft are in the wind-catching state and automatically open under the action of the wind, thereby increasing the windward area; the shell blades on the other side are in the wind-sheltering area state and automatically close under the action of the wind, effectively reducing the wind resistance. As the impeller main shaft rotates, the states of the shell blades on both sides will continue to be interchanged. During the continuous transformation of the outward expansion and inward contraction of the bi-directional support rods, the magnetic push rod can be driven to reciprocate in the solenoid, thereby generating an induced current. At the same time, the V-shaped air deflector can catch the wind, and the combined action of various factors effectively improves the wind energy utilization rate. Once encountering strong winds or typhoons, the wind speed sensor will send a signal, and the controller will immediately control the magnetic push rod to extend outwards through the solenoid, drive the bi-directional support rods to contract inwards, and prompt the shell blades on both sides to close, thereby protecting the equipment from damage.

[0013] The impeller main shaft and the cantilever frame of the present invention are both made of lightweight aluminum alloy profiles, the shell blades are made of lightweight basalt materials, the bi-directional support rods and the magnetoelectric components are both made of ordinary metal materials, and the pedestal bearings are purchased standard parts. The principle of the present invention is novel and clear, the structure is simple and reasonable, and it is easy for those skilled in the field of wind power generation to understand and implement.

[0014] Beneficial effects

[0015] The present invention has the following remarkable beneficial effects: 1. High wind energy utilization rate: The shell blades can open and close freely according to the wind speed and automatically adjust the angle. The magnetic push rod reciprocates in the solenoid to generate current. The deflector has a wind-catching effect and can further increase the windward area, thus maximizing the utilization of wind energy. 2. Low starting wind speed: The shell blades on both sides of the main shaft are in opposite directions, one side catching the wind and the other side avoiding the wind. They can automatically open at low wind speeds, with a low starting wind speed and a wide application range. 3. Equipment protection: In case of strong winds or typhoons, the controller immediately controls the magnetic push rod to extend outward through the solenoid, driving the bidirectional support rod to contract inward, prompting the shell blades on both sides to close, thereby protecting the equipment from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 : is the front view structural schematic diagram of the present invention; 1 is the impeller main shaft, 2 is the shell blade, 3 is the magnetoelectric component, 4 is the bidirectional support rod, 5 is the cantilever frame, and 6 is the air deflector.

[0018] Figure 2 : is the top view structural schematic diagram of the present invention; 1 is the open state of the shell, and 2 is the closed state of the shell.

[0019] Figure 3 : is the enlarged schematic diagram of the open state of the shell of the present invention; 1 is the inner shell piece, 2 is the magnetoelectric component, 3 is the outer shell piece, 4 is the air deflector, and 5 is the cantilever frame.

[0020] Figure 4 : is the enlarged schematic diagram of the closed state of the shell of the present invention; 1 is the outer shell piece, 2 is the magnetoelectric mechanism, 3 is the air deflector, 4 is the cantilever frame, and 5 is the inner shell piece. DETAILED DESCRIPTION OF THE INVENTION

[0021] As Figure 1 shown, cantilever frames 5 are installed on both sides of the impeller main shaft 1. The shell blades 2 are installed in the upper and lower cantilever frames 5. The bidirectional support rod 4 is installed on two opposite shell blades 2. The magnetoelectric component 3 passes through the air deflector 6 and is installed in the middle of the inside and outside.

[0022] When the shell blades 2 open, the bidirectional support rod 4 opens outward; when the shell blades 2 close, the bidirectional support rod 4 contracts inward. The magnetoelectric component 3 is connected to the inner and outer pieces. When the shell blades 2 automatically open with the wind, the bidirectional support rod 4 will push and pull the inner and outer blades to open and close in a chain reaction, and the magnetoelectric component 3 will act accordingly to generate current.

[0023] As Figure 3As shown in the figure, when the wind blows towards the impeller and the shell blades 1 and 3 are in the wind-catching area, they will automatically open under the action of the wind force. The double-direction support rods will open outwards. The V-shaped wind guide plate 4 has the function of catching the wind, increasing the windward area and improving the wind energy utilization rate. At the same time, the magnetoelectric mechanism 2 will also open accordingly, and its magnetic push rod extends into the solenoid to generate an electric current.

[0024] As Figure 4 shown in the figure, on the other side, the shell blades 1 and 5 are in the wind-sheltering area and will automatically close under the action of the wind force. The double-direction support rods 4 will contract inwards, reducing the wind resistance. At the same time, it drives the magnetic push rod of the magnetoelectric mechanism 2 to be removed from the solenoid, generating an electric current. The inner shell piece is slightly larger than the outer shell piece, which is convenient for catching the wind. With the push of the wind force, the wind-catching or wind-sheltering states of the shell blades on both sides of the main shaft will continuously interchange, thus realizing the continuous rotation of the impeller.

Claims

1. A vertical axis wind turbine impeller with shell-shaped blades, characterized in that: It includes: the impeller main shaft: composed of a hollow square tube and a seat plate, the middle of the seat plate is opened and welded to the lower end of the square tube; the cantilever frame: arranged on both sides of the impeller main shaft, each group is composed of a hollow square tube, a fixed plate and a V-shaped guide plate, the fixed plates are respectively welded to the inner end of the hollow square tube and installed on the main shaft tube wall, the V-shaped guide plate has a hole in the middle and is vertically installed at the corresponding position outside the upper and lower tubes to connect the upper and lower tubes; the shell blade: is an arc-shaped plate and consists of two inner and outer pieces, both of which have rotating shafts on the upper and lower cantilevers, and are respectively installed on the belts corresponding to the upper and lower cantilevers. The seat bearing has a hinged ring in the middle, which is hinged to the two-way support rod. It can be opened or closed freely with the wind, and the inner and outer blades move synchronously; magnetoelectric mechanism: composed of a solenoid and a magnetic push-pull rod, the push-pull rod extends into the solenoid, and the outer ends of the support rod are hinged to the rings corresponding to the inner and outer shell blades respectively, and the solenoid is installed on the inner side of the V-shaped wind guide plate; as the shell blades open and close, the magnetic push-pull rod reciprocates in the solenoid to generate current; seat bearing: installed at the corresponding position outside the upper and lower cantilever, used to support the shell blade rotating shaft.

2. The vertical axis wind turbine impeller with shell-shaped blades according to claim 1, characterized in that: Under the action of wind, the shell blades on one side of the impeller main shaft automatically open when they are in the wind-catching state, and the shell blades on the other side in the wind-sheltered state automatically close. As the impeller main shaft rotates, the wind-catching and wind-sheltered states of the shell blades on both sides continuously alternate.

3. The vertical axis wind turbine impeller with shell-shaped blades according to claim 1, characterized in that: The bidirectional support rod opens outward when the shell blades open, and contracts inward when they are closed, and at the same time drives the magnetic push-pull rod to reciprocate in the solenoid.

4. The vertical axis wind turbine impeller with shell-shaped blades according to claim 1, characterized in that: When encountering strong winds or typhoons, the wind speed sensor sends a signal, and the controller controls the magnetic push-pull rod to retract inward through the solenoid, driving the two-way support rod to retract inward, causing the shell blades on both sides to close.

5. The vertical axis wind turbine impeller with shell-shaped blades according to claim 1, characterized in that: The impeller main shaft and cantilever frame are made of lightweight aluminum alloy profiles, the shell blades are made of lightweight basalt materials, the two-way support rods and magnetoelectric components are made of ordinary metal materials, and the seat bearings are purchased standard parts.

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