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Floating body equipment for suppressing vibration of enclosure structure

A technology of enclosure structure and floating body, which is applied in the direction of mechanical equipment, monitoring of wind turbines, installation/support configuration of wind turbines, etc., which can solve the problems of increased manufacturing costs and maintenance costs

Active Publication Date: 2019-04-26
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] The wind speed of the air flow will change. If the characteristic parameters (pitch and height) of the helix 10a (or spiral plate) are processed to change according to the change of the wind speed of the air flow, the corresponding manufacturing cost and maintenance cost will increase significantly.

Method used

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  • Floating body equipment for suppressing vibration of enclosure structure
  • Floating body equipment for suppressing vibration of enclosure structure
  • Floating body equipment for suppressing vibration of enclosure structure

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Embodiment Construction

[0105] In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0106] Please refer to Figure 4 , Figure 4 It is a schematic structural diagram of a specific embodiment of a tower surrounded by a floating body provided by the present invention; Figure 5-1 for Figure 4 Partial enlarged schematic diagram of the middle A part; Figure 5-2 for Figure 4 The top view when the middle floating body surrounds the tower; Figure 5-3 for Figure 4 The top view of the floating body; Figure 5-4 for Figure 5-3 Partial enlarged schematic diagram of the middle part I; Figure 5-5 for Figure 4 Schematic diagram of the middle floating body swinging as the wind direction changes from the upwind direction.

[0107] like Figure 4 As shown, the tower 100 is installed on the foundation foundati...

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Abstract

The invention discloses a floating body device for suppressing the vibration of an enclosure structure, which includes a floating body surrounding the enclosure structure, and an excitation device capable of stimulating the floating body to float up and down; the excitation device includes connecting the floating body to Keep it from breaking away from the tether of the enclosure. When the floating body floats up and down, it can destroy the airflow boundary layer on the outer wall of the tower and directly suppress the cause of vortex-induced vibration; in addition, the change of aerodynamic shape can make the aerodynamic coefficient C smaller (reduce the vibration amplitude in the downwind direction), and can also Reduce the amplitude A of vortex-induced resonance; the floating up and down of the floating body disturbs and destroys the upper and lower sections of the nearby flow field, thus disrupting the correlation of the upwind airflow near the floating body, and correspondingly disrupting the floating body and other The consistency of the vortex shedding frequency of the positional airflow weakens their joint action, which prevents the vibration induced by the vortex excitation of the tower.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a floating body device for suppressing vibration of an enclosure structure. Background technique [0002] Please refer to Picture 1-1 , Picture 1-1 Schematic diagram of the composition of wind power generation equipment. [0003] The foundation of the wind power generation equipment is the tower 10, which plays a bearing role for the whole machine and acts as an enclosure. A combination of concrete towers. The tower 10 carries the nacelle 30 of the wind power equipment, the generator, and the wind turbine 20 . The wind generator set composed of the tower 10, the wind turbine 20, the nacelle 30 and the generator completes the task of obtaining wind energy and converting it into electrical energy. The converted electric energy is transmitted through the power transmission cable 40 or the power transmission busbar. After the power transmission cable 40 shown in the figure is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D13/20F03D17/00F03D80/00
CPCF03D13/20F03D17/00F03D80/00Y02E10/728F05B2260/96Y02E10/72E04B1/98E04H12/00
Inventor 马盛骏
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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