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Flange-free connection mode and implementation method for barrel-type tower frame of large size wind turbine

A wind turbine, flangeless technology, used in wind turbine components, wind turbine assembly, wind power generation, etc., can solve the problem of high cost, achieve the effect of reliable strength, simple connection method, and save the procurement process

Active Publication Date: 2013-12-04
GUODIAN UNITED POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the flange of the tower needs large-scale ring forging equipment to manufacture the blank, and then it can be delivered by machining, and the cost is relatively high

Method used

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  • Flange-free connection mode and implementation method for barrel-type tower frame of large size wind turbine
  • Flange-free connection mode and implementation method for barrel-type tower frame of large size wind turbine
  • Flange-free connection mode and implementation method for barrel-type tower frame of large size wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0046] The implementation method of the flangeless connection mode of a large-scale wind turbine tubular tower of the present invention comprises the following steps:

[0047] (1) Factory manufacturing stage:

[0048]①Manufacture of the blank of the upper connecting section: according to the drawing, carry out blanking, tailor welding, coiling, re-tailoring and other processes, complete the manufacturing of the blank of the upper connecting section, including the ring-shaped rib plate of the upper section, and complete the shaping process of the blank;

[0049] ②Turning: complete the turning of the upper connection section according to the drawings, including the inner fit cone, the lower end surface, the upper transition cone and the upper welding groove;

[0050] ③ Drilling: complete the drilling process of the upper ring-shaped stiffener plate;

[0051] ④Complete the manufacturing and processing of the lower connection section according to the same process as above;

[00...

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Abstract

The invention discloses a flange-free connection mode and an implementation method for a barrel-type tower frame of a large size wind turbine. The barrel-type tower frame comprises an upper section tower barrel and a lower section tower barrel, an upper section connecting segment is welded at the lower end of the upper section tower barrel, a lower section connecting segment is welded at the upper end of the lower section tower barrel, the upper and lower section connecting segments comprise two matched conical surfaces with an equal conical degree, and the two matched conical surfaces are tightly sleeved together and are connected by bolts and nuts through at least one ring of hinged holes. Compared with conventional connection modes of large size tower barrels, according to the flange-free connection mode, a pair of large flanges is omitted, the manufacturing cost of the tower barrels is lowered, the connection mode is simple, and the strength is reliable.

Description

technical field [0001] The invention relates to the field of large-scale wind turbines, in particular to a flangeless connection method and an implementation method for a cylindrical tower of a large-scale wind turbine. Background technique [0002] At present, the cylindrical structure of the cylindrical tower of the large-scale wind turbine is the most common structural form of the tower. Cylindrical towers are usually divided into sections for easy transportation. The towers of each section are transported to the installation site separately and then connected on site. Usually, a large flange is welded at the connection end of each section of the tower, and the flanges are connected with bolts at the installation site. Usually, the flange of the tower needs large-scale ring forging equipment to manufacture the blank, and then it can be delivered for use after machining, and the cost is relatively high. Contents of the invention [0003] The purpose of the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/04F03D13/10
CPCY02E10/722Y02E10/72Y02E10/728Y02P70/50
Inventor 施文江郭靖
Owner GUODIAN UNITED POWER TECH
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