Protective layer with ice removing and ice preventing functions for blade leading edge of wind driven generator

Abstract

The invention provides a protective layer with ice removing and ice preventing functions for the blade leading edge of a wind driven generator. The protective layer is prepared by compounding epoxy modified polyurethane resins and carbon fiber sheets, wherein the epoxy modified polyurethane resins have the characteristics that the shore A hardness is over 90; the viscosity (25DEG C) is 500-4000mPa.s; the glass transition temperature (tg) is equal to or below minus 30DEG C; the surface density of the carbon fiber sheets is 200-600g / m<2>. The protective layer disclosed by the invention can be quickly and integrally formed, and the protective layer can apply wear resisting protection and anti-corrosion protection to the blade leading edge; besides, the protective layer can also realize ice removing and ice preventing effects.

Description

Technical field [0001] The invention belongs to the technical field of wind power generation, and specifically relates to a protective layer with deicing and anti-icing functions, and its application on wind turbine blades. Background technique [0002] Wind turbine blades are one of the main components of wind turbines. The state of wind turbine blades directly affects the power generation efficiency of wind turbines. The leading edge of wind power blades has been exposed to wind friction for a long time, as well as the impact of sand, salt spray and rain, which is the most prone to wear on wind power blades; at the same time, the leading edge of the blade tip is relatively thin, and the linear velocity of the blade tip Very large, so the abrasion of this part is the most serious. [0003] After the leading edge of the wind power blade is abraded, the aerodynamic shape of the wind power blade will be affected; in addition, if the leading edge of the blade is not repaired in time,...

AI Technical Summary

Problems solved by technology

In terms of comprehensive effects, the first two solutions have achieved certain results, but neither of them has been widely used; the deicing of heating and heat-conducting particles is still in the laboratory stage; the carbon fiber layer is laid on the leading edge of the blade, and the temperature of the leading edge of the blade is increased by heating the carbon fiber. It is one of the current research hotspots to achieve the deicing effect by raising the height, but on the one hand, due to the long-term harsh and changeable external working environment and repeated heating temperature changes of the blade, the stability of the carbon fiber layer at the leading edge of the blade is not reliable. The degree is not high, on the other hand it does not solve the problem of blade leading edge wear protection at the same time

Images