BLADE WITH CONSTANT CROSS SECTION, FORMING METHOD THEREOF, AND HORIZONTAL AXIS WIND TURBINE IMPELLER COMPRISED OF THE SAME

摘要

Disclosed in the present invention are a fiber reinforced resin matrix composite blade with a constant cross section, a forming method thereof and a wind turbine impeller comprised of the blade, wherein the blade is mainly comprised of resin, fiber and core material, and can be a combined structure of multiple blade fragments (1). Each of the blade fragments has a constant cross section with a special chord length, and the chord lengths of various blade fragments are different with each other. The blade is fixed on a hub (8) of the impeller by means of a tensioned-cable structure, so as to form the impeller with fixed or variable pitch. The blade formed by pultrusion has very high quality stability and a high-precision exterior geometrical profile. The impeller with a large diameter, which is needed in a horizontal axis wind turbine, can be realized with the blade above, so that the impeller can have high aerodynamic profile precision, small stress deformation deflection and large sweeping area of a long blade, so as to realize an ideal wind catching effect.