Surface pressure measurement method of wind turbine tower suitable for wind tunnel experiments
A technology for surface pressure measurement and wind tunnel experiment, which is used in measurement devices, machine/structural component testing, aerodynamic testing, etc., to achieve the effect of convenient installation and disassembly, low inertia and loss, and suppression of voltage and current spikes
Active Publication Date: 2021-08-31
YANGZHOU UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for measuring the surface pressure of the wind turbine tower suitable for wind tunnel experiments, which can accurately collect the instantaneous pressure on the surface of the wind turbine tower under various wind speeds and wind turbine speeds , to solve the technical problems of wind turbine tower surface pressure measurement in wind tunnel experiments
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[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0042] Such as Figure 1 to Figure 6 As shown, a wind turbine tower surface pressure measurement device suitable for wind tunnel experiments includes a support frame 1 and a sleeve 2, and the support frame 1 includes a base 11, a load-bearing bracket 12, and a top plate 13; one end of the load-bearing bracket 12 is connected to the The center of the base 11 is connected, and the other end is connected with the top plate 13. The height of the load-bearing bracket 12 is 40% of the height of the wind tunnel test section, and the diameter is 32mm. The base 11 is a steel plate with a length of 200 mm, a width of 200 mm, and a thickness of 5 mm. The base 11 is provided with two sets of metric M10 threaded holes at different distances from the center of the base. One set of threaded holes 111, 112, 113, and 114 are 106 mm away from the center of the base. Anoth...
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The invention discloses a method for measuring the surface pressure of a wind turbine tower suitable for wind tunnel experiments. The method comprises the following steps: installing a wind turbine and a support frame in the wind tunnel, and installing a sleeve around the support frame; Arrange pressure measuring holes in the cross-section and connect to the pressure scanning valve; install Hall sensors, rectifier bridges and DC loads; start the wind tunnel; collect the current wind speed and the surface pressure of the wind turbine tower under different speeds and static conditions; change the wind tunnel Wind speed, after the wind speed in the wind tunnel is stable, repeat the measurement until all the working conditions required to be measured are measured. The invention has low design cost and convenient installation, and has important engineering significance for the accurate prediction of the aerodynamic load of the wind turbine tower under the rotating and static state.
Description
technical field [0001] The invention relates to the fields of wind tunnel experiments and performance testing of wind turbines, in particular to a method for measuring the surface pressure of wind turbine towers suitable for wind tunnel experiments. Background technique [0002] Wind power is currently the most widely used new energy power generation method. As countries around the world pay more and more attention to energy security, ecological environment and other issues, accelerating the development of wind power has become the general consensus of the international community to promote energy transformation and development. [0003] The horizontal axis wind turbine is one of the most effective wind energy conversion devices. It is mainly composed of a hollow steel tower and soft blades. When the wind turbine is running, the rotation and flow of the blades affect the flow field around the tower, resulting in The sharp change of wind speed and the change of flow field cha...
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IPC IPC(8): G01M9/06
CPCG01M9/06
Inventor 杨华杨俊伟唐铭辉陈东阳孙振业朱卫军李迺璐
Owner YANGZHOU UNIV