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Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade

A technology of wind turbines and connection methods, which is applied to wind turbine components, wind power generation, wind engines, etc., can solve the problems of blade manufacturing, processing and transportation difficulties, and achieve the effects of low cost, reliable connection and convenient construction

Inactive Publication Date: 2012-08-15
GUODIAN UNITED POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a long blade will bring great difficulties to the manufacturing, processing and transportation of the blade

Method used

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  • Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade
  • Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade
  • Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade

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Embodiment Construction

[0032] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, not to limit the present invention.

[0033] A segmented blade of a large-scale wind turbine of the present invention, the blade is made into two sections: a blade root section and a blade tip section, such as Figure 1-Figure 4 shown. A set of threaded steel 1a is pre-embedded in the blade shell of the joint of the blade tip section, and a set of threaded steel 1b is pre-embedded in the blade shell of the joint of the blade root section, and part of the length of the threaded steel 1a and 1b is exposed at the same time; each section The joint parts of the steel bars 1a and 1b are connected by lap welded structure, and the weld seam is 2; the inside of the area of ​​the lap welded structure of threaded steel 1a and 1b is p...

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Abstract

The invention discloses a sectional type blade of a large-scale wind power generator set and a connecting method for the sectional type blade. The blade is designed into two sections, a deformed steel bar is pre-embedded in a blade shell of a joint of each section, part of the length of the deformed steel bar is exposed at the same time, and the deformed steel bars at the joint ends of the two sections of the blade are required to have one-to-one correspondence lap positions; when the blade is sectionally transported to a complete machine mounting site, the two sections of the blade are adjusted to ideal opposite positions by using a fixture, and then the deformed steel bars corresponding to the two sections of the blade are lapped and welded together; and a prefabricated blade inner template and other materials which are the same as a blade base material are used for performing on-site pasting to connect the sectional blade, then the last pneumatic contour of the blade is molded by using a section of blade contour female die, and finally the process steps of curing, dismounting the female die, trimming and painting are finished. The sectional type blade is connected by adoption of a deformed steel bar lapping welded structure, the process is relatively simple, machining parts are not used, the cost is low, the connection strength is high, and the difficulty for processing, manufacturing and transporting over-long blades can be overcome.

Description

technical field [0001] The invention relates to the field of large wind turbines, in particular to a segmented blade of a large wind turbine and a connection method thereof. Background technique [0002] As the power of the horizontal axis wind turbine increases, the length of its blades will become longer and longer. At present, 6MW wind turbines have been launched, and 7MW to 12MW wind turbines are also under development. Blade lengths for these units will range from 65m to 110m. A blade of such length will bring great difficulties to the manufacture, processing and transportation of the blade. In order to solve the processing, manufacturing and transportation difficulties of these ultra-long blades, it is undoubtedly a desirable method to design the blades into segmented structures. The blades can be transported to the installation site in sections, and after the docking of the blades is completed on site, the installation with the main engine can be carried out. This...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00F03D11/04F03D13/20F03D80/00
CPCY02E10/72Y02E10/728Y02P70/50
Inventor 施文江郭靖
Owner GUODIAN UNITED POWER TECH
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