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SEGMENTED WIND ROTOR BLADE FOR WIND TURBINE GENERATOR SYSTEM AND ASSEMBLYING METHOD THEREOF

  • US 20120213642A1
  • Filed: 10/25/2010
  • Published: 08/23/2012
  • Est. Priority Date: 01/11/2010
  • Status: Abandoned Application
First Claim
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1. A segmented wind rotor blade for wind turbine generator system, characterized in that, it comprises an blade root section close to a side of a hub and a plurality of radial blades, wherein the blade root section and each radial blade are connected end to end via main girders connecting one by one which embedded into the both of the blade root section and each radial blade;

  • the end of the main girder in the blade root section far away from the hub is a connecting section of the main girder, in which the connecting section is hollow and the inner wall of the connecting section is formed along the spanwise of the wind rotor blade with inner grooves;

    the end of the main girder in the radial blade close to the hub is a leading connecting section extending beyond the end face of the radial blade, wherein the outer perimeter of the leading connecting section is formed along the spanwise of the wind rotor blade with outer dentation;

    the end of the main girder in radial blade far away from the hub is a trailing connecting section, the end face of which is flushed with the end face of the radial blade, wherein the trailing connecting section is hollow and the inner wall of the trailing connecting section is formed along the spanwise of the wind rotor blade with inner grooves;

    the leading connecting section of the main girder in the radial blade is inserted into the trailing connecting section of the main girder in the adjacent radial blade, so that the outer dentation of the leading connecting section are engaged with the inner grooves of the trailing connecting section, and the leading connecting section of the main girder in the radial blade adjacent to the blade root section is inserted into the connecting section of the main girder in the blade root section, so that the outer dentation of the leading connecting section are engaged with the inner grooves of the connecting section of the main girder in the blade root section;

    a flange disc is embedded at the leading connecting section of each radial blade and securely connected to the main girder of the radial blade, wherein a plurality of bolts are embedded at the end faces of the connecting section of the main girder in the blade root section and the trailing connecting section of the main girder in each radial blade and the flange disc is securely connected to the bolts via nuts; and

    an external shell is provided at the joint between the blade root section and each radial blade.

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