KR20230152142A - wind generator - Google Patents

Abstract

This technical solution is relevant to the wind power industry and consists in converting the kinetic energy of wind motion into rotational energy of the blade system and subsequently converting this energy into electric power. The wind power generator includes at least one support frame configured to be fixed between at least three radially located structures, a rotating shaft functionally connected to the generator and installed to rotate freely, and blades attached to the rotating shaft, and additionally a system It further comprises a rigidly mounted fixed vertical axis to which a support frame is attached, where a rotation axis is mounted to be rotatable about the vertical axis.
The surface area of one blade of the blade system is 20-1000 square meters. In a preferred embodiment the vertical axis is hollow and includes holes configured for communication lines to pass through.

Description

wind generator

The present invention relates to the wind power industry and is adapted to convert the kinetic energy of wind into mechanical energy of rotation of a blade system and subsequently convert the mechanical energy into electrical energy.

The 'wind power station' is a technical solution known in the prior art. It comprises a housing and a working shaft mounted within the housing that can freely rotate about a vertical axis, the wind wheel being formed as a flattened cone and blades fixed along the generatrix of the cone. (blade). The housing includes a bracket stand and a base. Registration (patent) for Russian Federation utility model No.155147, IPC F03D 3/06, F03D 11/00 was announced on September 20, 2016.

Common features of the known solution and the claimed solution (in the above utility model) are listed below:

- A frame exists;

- there is a freely rotatable rotating shaft functionally connected to the power generator;

- There is a blade system fixed to the rotation axis.

The unique features of the known and claimed solutions (in the utility model above) are listed below:

- configured to be fixed between the three radially located structures of the frame;

- there is a rigidly mounted fixed vertical axis to which the support frame will be attached;

- The rotation axis is installed so that it can rotate freely on the upper vertical axis.

The disadvantage of the above-mentioned solution is the low output power of the wind generator due to the proposed housing design; Shaft and windmill mounting options may not provide sufficient rigidity and stability to utilize blade systems with large surface area blades.

The technical solution 'wind power generator' is known in the prior art, and the closest prior art to the solution of the present invention is Russian Federation Patent No. 2673280, IPC F03D 3/00, F03D 9/34 were selected.

The common features of the known solution and the claimed solution (in the above patent) are listed below:

- there is a frame configured to be fixed between the three radially located structures;

- there is a freely rotatable rotating shaft functionally connected to the generator;

- There are blades fixed on the rotation axis.

Distinctive features of the known solution and the claimed solution (in the above patent) are listed below:

- there is a rigidly mounted fixed vertical axis to which the support frame is attached;

- The rotation axis is installed so that it can freely rotate around the upper vertical axis.

In known solutions, it is necessary to build a bulky frame to provide rigidity and stability to the blades, which have a large surface area. In order to ensure that the potential wind energy is most efficient and close to almost constant operation with very small fluctuations, it is necessary to build structures with a height of tens or even hundreds of meters, which increases the material consumption of wind generator structures. Under these conditions, the frame must have sufficient rigidity and stability to support the load imposed by the wind stream.

The aim of the claimed solution is to overcome the shortcomings of known solutions and create a wind power generator with high efficiency and reliability.

The advantage of the present invention is to improve the rigidity and stability of wind turbines.

An advantage of the present invention is that it has at least one support frame configured to be mounted between at least three radially positioned structures, a shaft operatively connected to the generator and installed to rotate freely, and blades attached to the shaft. This is achieved by a wind generator, wherein the wind generator further includes a rigidly mounted fixed vertical axis to which a support frame is attached, and the rotation axis is installed so as to rotate about the upper vertical axis. The surface area of one blade of the blade system is selected in the range of 5-1000 square meters. The blades of the blade system may be configured in different shapes, for example in the shape of a sail. Preferably the vertical axis of rotation is hollow and includes holes configured to pass communication lines therethrough.

By placing the support frame between three radially positioned structures, fixing it to a rigidly mounted stationary vertical axis, and configuring the rotation axis to freely rotate about the upper vertical axis, the rigidity of the entire structure, The stability and reliability are improved, making it possible to implement blade systems with larger parameters, for example blades with a surface area of 5 to 1000 meters. This reduces the vibration load applied to the wind generator and improves its efficiency and output.

In addition, by placing the support frame between at least three radially located streamlined structures, it is located at a height where the wind flow cannot permanently act due to the air corridor formed by the three radially located structures. However, a stronger wind flow from any direction impacts the blade system, further increasing the efficiency of the wind generator.

A wind power station, which is installed to freely rotate around a fixed axis, uses a generator (power station) to convert the rotation caused by the kinetic energy of the wind acting on the blades of the blade system into electrical energy. is structurally connected to the generator by any means known from the prior art to transfer the mechanical rotational energy of the elements of the generator. The generator may be connected directly to the rotating shaft or indirectly using a known rotation transfer mechanism. The rotating shaft may be fixed directly to the fixed shaft or may be fixed on the frame by known means, for example by bearings.

To better understand the inventive solution, radially located structures are structures located radially with respect to a fixed vertical axis around which the axis of rotation rotates, and all of these structures are positioned relative to the axis of rotation. It should be mentioned that it is not limited to a single embodiment located at the same distance from. These structures may be located at different distances and at different angular distances from the rotation axis of the shaft, for example, to better accommodate the prevailing winds of the selected area.

Calculations and mathematical models have shown that the optimal height of the tower (building) is 5 to 800 m, while the first blade system should be located at 5-15 m. The blade systems can be positioned one over another on the (vertical) axis. In this installation the parameters and number of blades must be calculated separately for any given height of the tower. For example, larger blades may be used at lower heights to better accommodate weaker winds, and the surface area of the blades shrinks as height increases.

In embodiments where the blade system rotates about a vertical axis, this structure of the blade system will accommodate the kinetic energy of the wind equally well regardless of changes in wind direction, thereby increasing the efficiency and reliability of the wind generator. The support frame fixed to the fixed axis will receive less load from the wind flow, so the overall structure will have greater rigidity and stability.

In addition, wind power generators may be equipped with air fairing plates that improve wind power generator efficiency by changing the direction of air flow to the blades. The air baffle plate can be fixed to the frame.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
Figure 1 shows a top view.
Figure 2 shows a transverse side view,
1 and 2 the following legend applies to the positions: 1 - support frame, 2 - shaft, 3 - blade system, 4 - fairing, 5 - Stationary vertical axis.

The inventive solution should be used as follows:

The three structures must be erected by any known means, in special cases these structures may be three multi-story towers shaped so that wind currents can flow smoothly around them. The structures can be positioned at equal or different distances to each other in such a way that some space for the wind generator is formed between them. Between the structures, vertical axes, for example made of reinforced concrete, are erected and rigidly installed. This fixed axis (axis) 5 is hollow and may include output communication means, for example an electric cable connecting the rotating shaft of the generator and other equipment. The support frame 1 must then be fixedly attached to the framework of the structures and to the fixed axis 5 at a pre-calculated height, for example an 80-story tower, where the lower blade system can be installed at a height of 8 meters. there is. The rotating axis 2 can then be rotated around the fixed axis 5 in such a way that its mass is supported simultaneously on the fixed axis 5 or on the frame 1 or on both the fixed axis 5 and the frame 1. It must be installed. The rotating shaft is then functionally connected to the generator. The blade system 3 is then positioned on the rotation axis 2. The number and parameters of blades are calculated according to the local wind characteristics of the region, energy demand, and height of the structure. The air corridor formed by the three structures strengthens the air flow in any wind direction. When these flows come in contact with the streamlined members, they are guided to the central part where the blade system (2) is located, absorbing the kinetic energy of the wind. It is transferred to the movement of the rotating shaft (2) and the generator, where the rotational energy is converted into electrical energy. According to mathematical calculations, this wind turbine, which has a system of 7-8 blades positioned one over another on a rotating axis fixed to the frame between the 80-story towers, can power three 80-story towers with each blade system producing at least 7.8 MW. can meet their energy needs. An electrical storage device may be additionally connected to the generator. The wind generator may further be equipped with an air fairing that can change the direction of the incoming air flow relative to the blades.

Industrial applications.

The inventive solution converts the kinetic energy of the wind into the mechanical energy of blade system rotation and then into electrical energy, and can provide a stable electricity supply to consumers in any field of technology using renewable energy sources. This energy source is environmentally friendly because it places minimal strain on the environment and is safe for humans.

The provided drawings and structural description do not limit the possible design options or limit the scope of the present technology in any way. Other configurations are possible within the scope of the claims.

1 - support frame
2 - rotation axis (shaft)
3 - Blade system
4 - Air fairing
5 - stationary vertical axis.

Claims (4)

A wind power generator including at least one support frame installed between at least three radially located structures, a rotating shaft functionally connected to the generator and installed to freely rotate, and blades attached to the rotating shaft, wherein the wind power A wind power generator, characterized in that it further includes a fixed vertical axis on which the generator is firmly mounted, to which the support frame is attached, and the rotation axis is installed to rotate around the vertical axis. According to paragraph 1,
Wind power generator, characterized in that one blade of the blade system has a surface area of 5-1000 square meters. According to paragraph 1,
A wind power generator, characterized in that the vertical rotation axis is hollow. According to paragraphs 1 and 3,
Wind power generator, characterized in that the vertical axis of rotation is hollow and includes holes for communication lines.