Multi-panel wind turbine blade with integrated root

Abstract

A wind turbine multi-panel blade with the integrated root, with an aerodynamic profile made up of at least one lower shell ( 17 ) on the pressure side and one upper shell ( 19 ) on the suction side and two prefabricated inner crossbeams ( 11, 13 ), with these lower and upper shells ( 17, 19 ) assembled with these inner crossbeams ( 11, 13 ), wherein these lower and upper shells ( 17, 19 ) and these prefabricated inner crossbeams ( 11, 13 ) including, respectively, some extensions ( 31, 33, 37, 39 ) configured so that they can be assembled making up the blade's root. The blade may also include a front shell ( 15 ) assembled with the crossbeam ( 11 ) nearest to the leading edge next to the lower and upper shells ( 17, 19 ).

1 . A wind turbine multi-panel blade with an aerodynamic profile made up of at least one lower shell ( 17 ) on the pressure side and one upper shell ( 19 ) on the suction side and two prefabricated inner crossbeams ( 11 ,  13 ), with these lower and upper shells ( 17 ,  19 ) assembled with these inner crossbeams ( 11 ,  13 ), wherein these lower and upper shells ( 17 ,  19 ) and these prefabricated inner crossbeams ( 11 ,  13 ) including, respectively, some extensions ( 31 ,  33 ,  37 ,  39 ) configured so that they can be assembled making up the blade's root. 
     
     
         2 . A wind turbine multi-panel blade with an aerodynamic profile according to  claim 1 , wherein it also having a front shell ( 15 ) assembled with the nearest crossbeam ( 11 ) to the leading edge next to the lower and upper shells ( 17 ,  19 ). 
     
     
         3 . A wind turbine blade according to  claim 1 , wherein the configuration of these extensions ( 31 ,  33 ,  37 ,  39 ) including a first area ( 31 ′,  33 ′,  37 ′,  39 ′) with which the transition section of the root of the blade and a second area ( 31 ″,  33 ″,  37 ″,  39 ″) with a circular sector shape is made to make the circular section of the root of the blade. 
     
     
         4 . A wind turbine blade according to  claim 1 , wherein these extensions ( 31 ,  33 ,  37 ,  39 ) being assembled using an adhesive bonding. 
     
     
         5 . A wind turbine blade according to  claim 1 , wherein these extensions ( 31 ,  33 ,  37 ,  39 ) being assembled using a riveted joint.