A design method of low wind pressure spoiler for steel tube lightning rod vortex vibration control

A technology of spoiler and lightning rod, which is applied to circuits, corona discharge devices, electrical components, etc., can solve the problem of not disclosing the aerodynamic shape of the steel pipe lightning rod, so as to enhance the effect of vortex vibration control, improve the service life, and reduce the damage of transverse vortex vibration. Effect

Active Publication Date: 2019-02-15
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
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Problems solved by technology

The prior art does not disclose a device for controlling the aerodynamic shape of a steel pipe lightning rod

Method used

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  • A design method of low wind pressure spoiler for steel tube lightning rod vortex vibration control
  • A design method of low wind pressure spoiler for steel tube lightning rod vortex vibration control
  • A design method of low wind pressure spoiler for steel tube lightning rod vortex vibration control

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Embodiment Construction

[0032] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0033] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides a low wind pressure spoiler design method used for steel tube lightning rod across-wind vortex vibration control. The method comprises the steps that the length and height of a spoiler are determined; a distribution algorithm of broken vortex holes in the spoiler is used to determine the radius and center coordinate of each broken vortex hole in a number of broken vortex holes; according to the radius and center coordinate of each broken vortex hole, the distribution of the broken vortex holes in the spoiler is arranged; and the spoiler is arranged on a steel tube lightning rod. According to the technical scheme provided by the invention, the basic principle of the aerodynamic shape can be changed; and by setting the broken vortex holes in the spoiler, the vortex vibration control effect of the spoiler can be enhanced, and the increased wind pressure of the spoiler can be reduced.

Description

technical field [0001] The invention relates to the field of disaster prevention and mitigation of power transmission and distribution equipment, and more specifically, to a steel pipe lightning protection device controlled based on the aerodynamic shape. Background technique [0002] Steel tube lightning rods in substations are mostly conical members supported by a single cantilever. With the increasing length of steel tube lightning rods, the slenderness ratio continues to increase, resulting in the continuous decrease of critical wind speeds for vortex-induced vibrations of the first and second orders of steel tube lightning rods. Under the condition of common wind speed in nature, the steel pipe lightning rod has cross-wind vortex induced vibration, especially the second-order vortex vibration with large amplitude and high frequency, which can form cumulative loss. In recent years, in Qinghai, Xinjiang, Gansu and other areas where there are many strong winds in the north...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T19/04
CPCH01T19/04
Inventor 王旭明杨风利马江泓李红张宏杰韩军科邢海军
Owner CHINA ELECTRIC POWER RES INST
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