A wind turbine blade pneumatic deicing system and its working method
A technology for wind turbines and working methods, applied in wind power generation, wind turbines, machines/engines, etc., can solve problems such as failure to consider the additional power consumption of the blower and the comprehensive utilization of the overall energy of the blower, so as to improve the power generation efficiency and save energy. , the effect of improving the efficiency of the unit
Active Publication Date: 2022-03-08
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology
However, it still fails to consider the optimization of the extra power consumption brought by the weight of the blower and the comprehensive utilization of the overall energy of the fan
Method used
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[0035] The present invention will be described in further detail below in conjunction with accompanying drawing, and its content is explanation of the present invention rather than limitation:
[0036] Such as figure 1 , is the wind turbine blade pneumatic deicing system of the present invention, including cooling pipeline 21, generator cooling main circuit 5, main circuit heat exchanger 6, generator cooling bypass 8, bypass heat exchanger 9 and deicing pipe Road 22.
[0037]The inlet and outlet of the cooling pipeline 21 are all located outside the fan cabin 1, the cooling pipeline 21 is provided with a cooling pipeline fan 7, and the cooling pipeline 21 and the generator cooling main circuit 5 are exchanged in the main circuit heat exchanger 6. heat; generator internal air passage 3 and generator cooling main road 5, generator internal air passage 3 and generator cooling bypass 8 constitute two circulation loops respectively, generator internal air passage 3 is provided wit...
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The invention discloses an aerodynamic deicing system for wind turbine blades and a working method thereof, belonging to the technical field of wind power generation. Set up a generator cooling bypass next to the generator cooling circuit. When the blades freeze, a part of the internal circulating air of the generator enters the bypass heat exchanger to exchange heat with the deicing airflow. The deicing air flow passes through the heat exchanger to absorb part of the heat from the circulating air in the generator, and then is sent to the blades to heat the blades to prevent icing. The control system adjusts the opening of the control valve according to the temperature measured by the blade temperature sensor, and adjusts the flow rate of the internal circulating gas entering the cooling bypass. When the bypass is turned on and the flow rate of the main road decreases, the output of the fan in the cooling pipeline is reduced to save the energy consumption of the whole machine. Targeted control strategies have been refined for the operating environment of wind turbines, making full use of energy, realizing the cascade utilization of wind turbine energy, reducing the overall energy consumption of the system, and improving the power generation efficiency of the whole machine.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a wind turbine blade pneumatic deicing system and a working method thereof. Background technique [0002] With the development of wind power generation in China, many wind farms are located in areas prone to freezing, which has a certain impact on the application of wind power generation. Fans operating in high-humidity areas, when the ambient temperature drops to about 0°C, and when the water droplets in the humid air hit the surface of the blade shell (the surface temperature of the blade shell is not greater than the ambient temperature), latent heat will be released and icing will occur . Once the blade surface is frozen, on the one hand, it will affect the aerodynamic performance of the blade and reduce the power generation efficiency of the unit (20% to 50% of the power generation loss will be caused when the ice is severe), and at the same time, ...
Claims
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IPC IPC(8): F03D80/40F03D7/02F03D17/00
CPCF03D80/40F03D7/02F03D17/00Y02E10/72
Inventor 许扬陈浩李林川蔡安民林伟荣焦冲
Owner HUANENG CLEAN ENERGY RES INST