ANTI-ICING AND DEICING METHOD AND DEVICE FOR HIGH-POWER WIND TURBINE BLADES

摘要

A modular gas-heat anti-icing method and device for high-power wind turbine blades. A modular heating system (5) is arranged on the root part of a blade (6), a ventilating duct (19) is paved in the blade (6), a wind deflector (21) is arranged at the end of the ventilating duct (19), and the wind deflector (21) divides the leading edge of the blade into two parts, so that the hot air in the ventilating duct (19) is led to the blade tip and then circulates into the root part of the blade via the rear edge of the blade, making the hot air circulate inside the blade (6) and forming a "blade root to blade tip to blade root" closed loop. The purpose of mainly heating the leading edge of the blade is achieved, so it is ensured that the whole blade will not ice by preventing the leading edge of the blade from icing. Said method and device enable the anti-icing and deicing function of high-power wind turbine blades, increase the generating efficiency of the wind turbine in winter, reduce the overall load and the overall running risk, and can be applied to a wind wheel of a running wind turbine.