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Method for restraining vortex-induced vibration in hoisting process of ultrahigh fan tower

A vortex-induced vibration and wind turbine tower technology is applied in the control of wind turbines, the assembly of wind turbines, wind turbines, etc. It can solve problems such as hidden safety hazards and difficulties in installation and construction of wind turbine towers, so as to ensure stability and reduce construction costs. , to ensure the effect of disassembly

Inactive Publication Date: 2017-08-11
CHINA 22MCC GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the existence of lateral vibration of the tower, it has caused great difficulties and potential safety hazards for the subsequent installation and construction of the wind turbine tower.

Method used

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  • Method for restraining vortex-induced vibration in hoisting process of ultrahigh fan tower
  • Method for restraining vortex-induced vibration in hoisting process of ultrahigh fan tower
  • Method for restraining vortex-induced vibration in hoisting process of ultrahigh fan tower

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Embodiment Construction

[0037] The present invention is described in detail below with reference to accompanying drawing and embodiment:

[0038] attached Figure 1-3 It can be seen that a method for suppressing vortex-induced vibration in the hoisting process of an ultra-high wind turbine tower includes a tower body 1, a spiral spoiler 2 is arranged on the outer circumference of the tower body 1; the upper end of the spoiler 2 passes through the beam The tightening band 3 is fixed on the top of the tower body 1 ; the lower end of the spoiler 2 is fixed on the bottom of the tower body through the tightening band 3 .

[0039] The spoiler is composed of 3-5 triangular prisms; the triangular prisms are wound on the outer peripheral surface of the tower body.

[0040] The cross section of the triangular prism is an equilateral triangle, and the side length of the triangle is 300-400 mm.

[0041] The triangular prism is composed of short triangular columns of 500-1000 mm; the center of the short triangu...

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Abstract

The invention relates to a method for restraining vortex-induced vibration in the hoisting process of an ultrahigh fan tower. A tower body is included, and a spiral turbulator is arranged on the outer circumferential surface of the tower body. The upper end of the turbulator is fixed to the top of the tower body through a binding belt, and the lower end of the turbulator is fixed to the bottom of the tower body through a binding belt. Short triangular prisms are connected into a whole through a rope, one end of the turbulator formed by the short triangular prisms is uniformly fixed to the binding belt at the top of the tower, cable ropes are mounted, and the bottom end of the turbulator is fixed to the outer circumferential surface of the tower body. According to the method for restraining vortex-induced vibration in the hoisting process of the ultrahigh fan tower, the tower turbulator is arranged, so that the hoisting stability of the ultrahigh tower is guaranteed; an active falling device is adopted by the turbulator, so that the mounting and dismounting construction speed is high; and the turbulator is bound through the ropes, so that detachability of the turbulator is guaranteed, construction efficiency is improved, construction cost is reduced, and construction safety is guaranteed.

Description

technical field [0001] The invention relates to a construction method for hoisting an ultra-high wind turbine in the wind power industry, in particular to a method for suppressing vortex-induced vibration during the hoisting of an ultra-high wind turbine tower. Background technique [0002] The height of the supporting structure tower of wind turbines in domestic wind farms exceeds 120m. After the fifth section of the tower is installed, but before the nacelle is installed, the tower swings in an elliptical shape when viewed from above, with a maximum swing of 2.5m. The vibration of the tower in the fifth section is the most violent, and it is determined that the vibration of the tower is the lateral vibration of the tower caused by eddy current excitation (referred to as "vortex induced vibration"). [0003] Due to the existence of the lateral vibration of the tower, it has caused great difficulties and potential safety hazards to the subsequent installation and constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/20F03D80/00F03D13/10F03D7/02
CPCF03D7/0296Y02E10/72
Inventor 葛立杰
Owner CHINA 22MCC GROUP CORP
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