Ice wind tunnel experiment system and method for horizontal axis wind turbine using natural low temperature airflow

Abstract

The ice wind tunnel experiment system and method of the horizontal axis wind machine using natural low temperature airflow belong to the wind energy utilization experiment technology; on the rear part of the conventional opening jet type wind tunnel using the natural low temperature ice wind tunnel experiment system, a mixing section connected to each other is installed in sequence, Diffusion section, experimental section, turning section and discharge section, the inlet end of the conventional open jet type wind tunnel and the outlet end of the discharge section communicate with the outdoor atmosphere, the spray device is installed in the mixing section, and the deflector is installed in the turning section. In the experimental section, the experimental blade section on the horizontal axis wind turbine test bench is arranged in the experimental section. During the experiment, the natural low-temperature airflow is used to pass through the experimental system, and the technical parameters obtained through adjustment and measurement are used to calculate the horizontal axis. The icing situation of the blades of the axial wind turbine; the invention does not need refrigeration during the experiment, saves energy consumption, reduces the cost of the experiment, has strong applicability, and the experiment effect is real and reliable.

Description

technical field [0001] The invention belongs to the experimental technology of wind energy utilization, and mainly relates to an ice wind tunnel experimental system and an experimental method of a horizontal axis wind turbine using natural low-temperature air flow. Background technique [0002] After years of development, my country has become a big wind power country. Horizontal axis wind turbines are the mainstream products for wind energy utilization at this stage, and they are widely distributed in inland and coastal areas. This requires wind turbines to be able to work in some areas with extreme climatic conditions. Among them, the icing phenomenon of the wind turbine caused by the low temperature and humid environment will directly affect the normal operation of the wind turbine, reduce the efficiency of wind power generation, affect the power transmission, and even cause damage to the unit. [0003] Therefore, studying the icing mechanism of wind turbines, developing ...

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Problems solved by technology

[0005] At present, my country's ice wind tunnels mainly serve the aerospace field, with complex structures, high costs, and high operating costs. At the same time, there are many parameters affecting the icing of horizontal axis wind turbines and a large amount of testing. Up to now, they have not been really used for wind turbines. Ice Wind Tunnel for Icing Research

At the same time, the size of large wind turbines is too large to conduct full-scale experiments in ice wind tunnels, and the icing results of small wind turbines cannot be directly used on large wind turbines due to the large size difference

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