Flow guide and wind gathering type wind turbine with auxiliary wind plates
By introducing conical guide devices and auxiliary wind deflectors into wind turbines, the problem of low wind energy utilization at the blade root has been solved, achieving efficient conversion of wind energy and improved power generation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-04-10
AI Technical Summary
Existing wind turbines suffer from significant wind resource waste in the area near the hub center, especially with insufficient wind energy conversion efficiency at the blade roots, which affects overall power generation capacity.
The wind turbine adopts a wind-gathering type with auxiliary wind deflector. The wind is guided to the wind-receiving chord of the blades by a conical wind deflector device, and an auxiliary wind deflector is installed on the chassis to help the blades rotate quickly to the windward side, thereby improving the wind energy utilization rate.
It significantly improves wind power generation efficiency by effectively transferring wind energy to the wind-receiving section through the flow guide device, thereby increasing the wind speed of the blades and the wind energy utilization rate.
Smart Images
Figure CN224107364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a wind turbine with an auxiliary wind deflector and wind concentrating function, belonging to the field of wind turbine technology. Background Technology
[0002] Wind energy, as an environmentally friendly and renewable energy source, has played an increasingly important role in my country's energy system in recent years. However, a common pain point in the wind power industry is the waste of wind resources near the hub. The root cause of this problem lies in the low efficiency of wind energy utilization, especially the insufficient wind energy conversion efficiency at the blade root, which directly affects the overall power generation capacity.
[0003] Therefore, optimized design for wind turbines in terms of energy transfer and recovery is particularly important. This not only helps improve the efficiency of wind power generation, but also has profound significance for promoting the sustainable development of the wind energy industry.
[0004] A downwind-guided wind turbine, filed on the same day as this application, was found during testing to have blades that were not easily oriented toward the oncoming wind direction, resulting in a waste of some wind power. Utility Model Content
[0005] This invention overcomes the shortcomings of existing technologies and provides a wind turbine with an auxiliary wind deflector, which helps the blades find the windward side more quickly and greatly improves the utilization rate of wind power.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a wind turbine with an auxiliary wind deflector, comprising a wind turbine body, wherein the blades of the wind turbine body include a blade root portion and a wind-receiving chord portion, the blade root portion and the wind-receiving chord portion are integrally formed, the blade root portion is used to connect to the hub of the wind turbine body, the wind-receiving chord portion is used to capture wind, and the chord length of the wind-receiving chord portion gradually decreases from the starting position to the blade tip, the conical wind deflector is fixedly installed on one side of the casing of the wind turbine body, the small end of the conical wind deflector is set facing the windward side, the large end of the conical wind deflector projects to completely cover the blade root portion, the blades of the wind turbine body are set facing the conical wind deflector through pitch control, and an auxiliary wind deflector is vertically installed on the casing, the lateral extension direction of the auxiliary wind deflector is facing the windward side.
[0007] Furthermore, the central axis of the conical guide device coincides with the rotational central axis of the wind turbine blades.
[0008] Furthermore, the conical flow guide device may be an integral conical shell or a conical skeleton covered shell.
[0009] Furthermore, the included angle of the small end of the conical flow guide device is 10° to 150°.
[0010] Further, the conical flow guide device is an arc-shaped cone.
[0011] The utility model has the beneficial effect compared with prior art: the utility model carries out the flow diversion of the wind that flows through the surface of conical flow guide device, and the work of the wind string part is improved, and the efficiency of wind power generation is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] The utility model will be further described below in combination with the drawings.
[0013] Figure 1 It is the three-dimensional structure schematic of the utility model Figure 1 .
[0014] Figure 2 It is the three-dimensional structure schematic of the utility model Figure 2 .
[0015] Figure 3 It is the three-dimensional structure schematic of the utility model Figure 3 .
[0016] In the drawing: 1 is wind turbine body, 2 is blade root part, 3 is wind string part, 4 is conical flow guide device, 5 is machine case, 6 is auxiliary wind plate. DETAILED DESCRIPTION
[0017] The utility model will be further described below in combination with the drawings.
[0018] Example one
[0019] As Figure 1 , Figure 2 and Figure 3The utility model discloses a kind of flow guide wind concentrating type wind turbines with auxiliary wind plates, including wind turbine body 1, the blade of wind turbine body 1 includes blade root portion 2 and wind-receiving chord portion 3, the blade root portion 2 and wind-receiving chord portion 3 are integrally formed, the blade root portion 2 is used to be connected with the hub of wind turbine body 1, the wind-receiving chord portion 3 is used to catch wind, and the wind-receiving chord portion 3 gradually decreases from starting position to blade tip chord length, the conical flow guide device 4 is fixedly arranged at the one side of the machine box 5 of wind turbine body 1, the small end of the conical flow guide device 4 is arranged towards windward face, the large end of the conical flow guide device 4 projects and completely covers the blade root portion 2, the blade of wind turbine body 1 is arranged towards the conical flow guide device 4 by variable pitch windward face, auxiliary wind plate 6 is vertically arranged on the machine box 5, the transverse extension direction of auxiliary wind plate 6 is towards windward face, in the process of finding wind, oblique wind blows on auxiliary wind plate 6, auxiliary wind plate 6 will assist blade to rotate to windward face quickly, the central axis of the conical flow guide device 4 coincides with the blade rotation central axis of wind turbine body 1, the conical flow guide device 4 is either integrated conical shell, or conical skeleton membrane shell, the included angle of the small end of the conical flow guide device 4 is 90 °.
[0020] Example two
[0021] The conical flow guide device 4 in the embodiment is arc-shaped cone, and the remaining features are the same as those in example one.
[0022] The above example one and example two are for 19.8-meter-long wing-shaped blades. In traditional design, due to the connection between the blade root and the hub, the wind energy utilization coefficient cannot be designed at the optimal position. Ideally, the chord length of the blade should gradually increase from the blade tip to the blade root. However, in order to meet the structural strength requirements, the chord length is forced to decrease, resulting in a significant reduction in wind energy utilization rate in the blade root area. The optimal wind energy utilization coefficient is located at a position 4500 mm away from the blade root. In this embodiment, flow guiding measures are implemented at a position about 5000 mm away from the blade root to optimize airflow guidance and improve wind energy utilization efficiency.
[0023] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.
Claims
1. A wind turbine with an auxiliary wind deflector, comprising a turbine body (1), wherein the blades of the turbine body (1) include a blade root portion (2) and a wind-receiving chord portion (3), the blade root portion (2) and the wind-receiving chord portion (3) being integrally formed, the blade root portion (2) being connected to the hub of the turbine body (1), the wind-receiving chord portion (3) being used to capture wind, and the chord length of the wind-receiving chord portion (3) gradually decreasing from the initial position to the blade tip, characterized in that, The conical flow guide device (4) is fixed on one side of the machine box (5) of the wind turbine body (1), the small end of the conical flow guide device (4) is arranged towards the windward surface, the projection of the large end of the conical flow guide device (4) completely covers the blade root part (2), the blade of the wind turbine body (1) is arranged towards the conical flow guide device (4) through variable pitch windward surface, the auxiliary wind plate (6) is vertically arranged on the machine box (5), and the transverse extension direction of the auxiliary wind plate (6) is towards the windward surface. The conical flow guide device (4) is an integrated conical shell or a conical framework film shell.
2. The flow guiding and wind concentrating wind turbine with auxiliary wind plates according to claim 1, characterized in that, The central axis of the conical flow guide device (4) coincides with the central axis of rotation of the blade of the wind turbine body (1).
3. The flow guiding and wind concentrating wind turbine with auxiliary wind plates according to claim 1, characterized in that, The included angle of the small end of the conical flow guide device (4) is 10°-150°.
4. The flow guiding and wind concentrating wind turbine with auxiliary wind plates according to claim 1, characterized in that, The conical flow guide device (4) is an arc-shaped cone.