Smart vortex generator device for wind turbine blade surface
A wind turbine blade and vortex generator technology, which is applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problems of neglecting three-dimensional features, poor separation airflow performance, and surge resistance, etc., to improve the blade flow field, The effect of improving the utilization rate of wind energy
Inactive Publication Date: 2019-06-14
HOHAI UNIV
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Problems solved by technology
[0007] The purpose of the present invention is to address the deficiencies of the above-mentioned background technology, and provide an intelligent vortex generator device for the surface of a wind turbine blade. Through several rotatable vortex generator groups, each vortex generator group is always facing the local area. The purpose of the flow direction, and then realize the purpose that the vortex generator device can well adapt to the flow on the blade surface, and solve the problem that the existing wind turbine vortex generator ignores the three-dimensional characteristics of the gas flow on the surface of the wind turbine blade and the fixed installation of the vortex generator Technical issues with poor performance of separated airflow and surge in drag due to oblique flow on the blade surface
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[0023] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.
[0024] Symmetrical vortex generators such as figure 1 As shown, it consists of two symmetrically arranged vortex generator blades 1, and generally has a flared structure. When the flow direction of the local fluid is consistent with the symmetry line 2 of the vortex generator group, the local fluid is facing the vortex generator and generates a vortex behind it to achieve the purpose of flow control. At this time, the symmetrical vortex generator group is in the best working state.
[0025] Airfoil surface vortex generators such as figure 2 As shown, the parallel flow streamlines on the airfoil surface of the wind turbine blade 4 have no span-wise component velocity. Under this condition, the local fluid is facing the vortex generator group 3, and the vortex generator exerts the maximum performance, producing the maximum lift force and the minimum...
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The invention discloses an intelligent eddy flow generator device for the wind turbine blade surface and belongs to the technical field of wind turbines. The intelligent eddy flow generator device comprises at least one eddy flow generator set, a control box, at least one rotating shaft and at least one spring piece, the control box is arranged inside the wind turbine blade material and is in rigid connection with the incident flow surface of a wind turbine blade, all the rotating shafts are installed on the control box, each eddy flow generator set is arranged on one rotating shaft in a sleeving manner, one end of each spring piece is fixedly connected with one rotating shaft, the other end of each spring piece is fixed to the control box, the elastic force coefficient of each spring piece is the linear coefficient of the rotating speed of the wind turbine blade and the centrifugal deflecting force of the eddy flow generator set arranged on the rotating shaft in a sleeving manner which is connected with the corresponding spring piece, and the elastic force coefficient of all the spring pieces is increased along extension of the wind turbine blade spanwise position. By means of theintelligent eddy flow generator device for the wind turbine blade surface, the maximum improvement effect of blade flow field can be achieved under any working conditions and a state of least resistance is maintained, and then the wind energy utilization rate of the wind turbine blade is improved.
Description
technical field [0001] The invention discloses an intelligent vortex generator device used on the surface of wind turbine blades, belongs to the technical field of wind turbines, and in particular relates to the field of optimized design of wind turbine blades. Background technique [0002] Wind energy is an important renewable energy, and many countries have increased the development and utilization of wind energy. At present, in my country's energy structure, the share of wind power only ranks third after thermal power and hydropower. The share of wind power exceeds that of nuclear power and will still maintain a rapid development trend in the next few decades. The rapid development of wind power is not only reflected in the huge increase in annual newly installed capacity, but also in the gradual increase in the capacity of a single wind turbine generator set. At present, the maximum single unit capacity of wind turbine generator sets reaches 8MW, and the blade length ex...
Claims
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IPC IPC(8): F03D1/06F03D7/04
CPCF03D1/0675F03D7/0204Y02E10/72
Inventor 赵振宙汪瑞欣许波峰郑源钱思悦苏德程吴昊
Owner HOHAI UNIV