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Wind electricity tower spoiler

A technology for wind power towers and spoilers, which is applied in wind power generation, wind engines, machines/engines, etc. It can solve the problems of limited service life, inability to use, and difficulty in installation, so as to prevent paint damage and reduce The effect of the number of molds and long service life

Pending Publication Date: 2020-03-27
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the installation of the spoiler is in the hoisting of the tower, by winding the foam spoiler with a triangular cross-section on the upper half of the tower and connecting it in series with a rope, and "breaking up" through the added spoiler "Disturb" the airflow flowing through the tower, so that the back flow surface will not produce regular shedding vortices, but the service life of this method is limited, and it is difficult to install later; add vibration control dampers and wind turbine blades Setting the pitch angle to increase the aerodynamic damping is a passive control method. Since the frequency of the tower during the hoisting process varies with different hoisting progress, it cannot be used in hoisting; the aerodynamic damping can be increased by setting the pitch angle of the fan blades. The damping method cannot be applied when the tower is hoisted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1 to Figure 6 As shown, the wind power tower spoiler described in this embodiment is composed of a plurality of spoiler units 2, and the plurality of spoiler units 2 are connected in sequence to form a continuous helical line arranged on the wind power tower 1 on the outer wall (2 to 4 strands can be installed according to the actual situation, figure 1 is the effect of two strands), and is fixed on the outer wall of the wind power tower 1 through the spoiler unit 2 at the end, and the helical structure spoiler "breaks up" and "disturbs" the airflow flowing through the tower, so that Its back flow surface will not produce regular shedding vortices to destroy the components of the Karman vortex street, thereby preventing vortex-induced resonance during the entire life cycle of the fan. The pitch of the continuous helix is ​​2D to 5D, where D is Outer diameter of the tower tube 1, wherein the material of the spoiler unit 2 is one of glass fiber resin comp...

Embodiment 2

[0038] Such as Figure 7 As shown, the difference between the structure of this embodiment and the first embodiment is that a plurality of spoiler units 2 form a discontinuous helix and are arranged on the outer wall of the wind power tower 1, that is, each spoiler unit 2 is independently fixed on the outer wall of the wind power tower 1, and the distance between two adjacent spoiler units 2 is set.

Embodiment 3

[0040] Such as Figure 8 As shown, the structure of this embodiment is similar to Embodiment 1, the difference is that every 2 to 10 spoiler units 2 are connected into a group, and multiple groups of spoiler units 2 form a non-continuous helical row It is arranged on the outer wall of the wind power tower 1, and a distance is kept between two adjacent groups.

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Abstract

The invention discloses a wind electricity tower spoiler, which consists of a plurality of spoiler units, wherein the section of each spoiler unit is of a sealed three-edge solid structure or a three-edge thin-wall structure with an opening end; the plurality of spoiler units are connected in sequence to form one strand of continuous spiral line; in addition, the spiral line is fixed on the outerwall of the tower through the spoiler units positioned on the end parts; the bottom surface of each spoiler unit is fit to the outer wall of the tower; or the plurality of spoiler units form one strand of continuous spiral line, the continuous spiral line is arranged on the outer wall of the tower, i.e., each spoiler unit is fixed on the outer wall of the tower, and in addition, the bottom surfaceof each spoiler unit is fit to the outer wall of the tower; and two adjacent spoiler units are arranged at an interval. The spoiler can adapt to the shape follow-up technology of different external diameters of the whole tower, has a good spoiling effect and has a long service life.

Description

technical field [0001] The invention relates to the technical field of preventing vortex-induced resonance of a wind power generator, in particular to a spoiler for a wind power tower. Background technique [0002] When the airflow at a uniform velocity flows through the tower, it will generate alternating shedding vortices on the back flow surface of the tower, forming a Karman vortex street. The excitation induced by the Karman vortex street will cause vortex induced resonance in the tower, which not only affects the hoisting of the tower, but also reduces the fatigue life of the tower and threatens the safety of the tower and the wind power machine. During the hoisting of the tower, due to the occurrence of vortex-induced resonance, the swing of the tower increases, and the docking of the tower, the main engine, and the wind wheel cannot be completed smoothly, which affects the hoisting progress; In the non-operating state, due to the loss of the disturbance effect of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/00F03D13/20F03D7/04
CPCF03D80/00F03D13/20F03D7/0296Y02E10/728Y02E10/72
Inventor 张维庆王诚辉高玉涛苏联发熊沥鑫刘思成
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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