Breeze vibration suppression device of power transmission tower

A technology for vibration suppression and transmission towers, applied to towers, building types, buildings, etc., can solve problems such as inability to completely suppress vortex-induced wind vibration

Pending Publication Date: 2021-03-05
EAST INNER MONGOLIA ELECTRIC POWER COMPANY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem existing in the prior art that traditional prevention and control measures cannot completely suppress the occurrence of vortex-induced wind vibrations for long and thin steel pipe members that are prone to generate breeze vortices, the present invention provides a breeze vibration suppression device for transmission towers

Method used

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  • Breeze vibration suppression device of power transmission tower
  • Breeze vibration suppression device of power transmission tower
  • Breeze vibration suppression device of power transmission tower

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a transmission tower breeze vibration suppression device, the front view is as follows figure 1 As shown, it includes: a sleeve 2; the sleeve 2 is a hollow cylindrical structure, fixedly sleeved on the steel pipe of the transmission tower, and a plurality of holes 4 are arranged along the axial direction of the sleeve 2.

[0033] The sleeve 2 includes:

[0034] At least two curved cylinders;

[0035] All the arc cylinders are combined along the cylinder sides to form a cylinder structure.

[0036] There are two arc cylinders.

[0037] Also includes a plurality of bolts 5;

[0038] Screw holes are provided on each arc-shaped cylindrical surface, and the cylindrical structure is formed by combining bolts 5 .

[0039] The diameter of the cylindrical structure is equal to the diameter of the steel pipe of the transmission tower, and the cylindrical structure is fixed on the steel pipe of the transmission tower by tightening the bolts 5 .

[004...

Embodiment 2

[0052] This embodiment provides a transmission tower breeze vibration suppression device, the device is installed on the steel pipe of the transmission tower, and the device is installed on the steel pipe rod 1, the front view is as follows figure 1 shown, including:

[0053] The sleeve 2 and the spoiler 3 are provided with circular openings, and the circular openings play the role of breaking the vortex, which can not only enhance the wind vibration control effect, but also reduce the wind resistance of the cylindrical sleeve itself;

[0054] The spoiler strip 3 is evenly installed on the outside of the sleeve 2 along the axis of the sleeve 2 .

[0055] The sleeve 2 is made of anti-aging metal material, including:

[0056] Two semi-cylindrical surfaces and bolt 5;

[0057] The radius of the semicircle of the semi-cylindrical surface is equal to the radius of the steel pipe of the transmission tower;

[0058] The semi-cylindrical surface is butt-mounted to the outer side of...

Embodiment 3

[0069] This embodiment provides a breeze vibration suppression device for a power transmission tower, which is composed of a cylindrical sleeve and a spoiler, the cylindrical sleeve surrounds the steel pipe rod, and the spoiler is externally connected to the cylindrical sleeve.

[0070] The cylindrical sleeve consists of 2 semi-cylindrical surfaces connected by 4 bolts at both ends. The cylindrical sleeve has built-in grooves every 90°, and a spoiler is inserted into each groove. The height of the spoiler is 10cm, and it is made of PVC material. In the area between each groove of the cylindrical sleeve, 4 columns of Φ2cm round holes are evenly distributed.

[0071] Such as image 3 According to the slenderness ratio and wind vibration conditions of the steel pipe rod shown, 5 to 7 devices of the present invention are installed at equal intervals.

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Abstract

The invention discloses a breeze vibration suppression device for a power transmission tower. The breeze vibration suppression device comprises a sleeve (2), wherein the sleeve (2) is of a hollow cylindrical structure and fixedly connected to a power transmission tower steel pipe in a sleeving mode, and a plurality of holes (4) are formed in the axis direction of the sleeve (2). According to the scheme, the sleeve (2) can transversely block vortexes formed by breeze airflow on the power transmission steel pipe and restrain breeze vibration of a steel pipe rod piece, and the holes in the sleeve(2) have the effect of broken vortexes and restrain vortexes formed by the breeze airflow on the power transmission tower steel pipe.

Description

technical field [0001] The invention relates to the field of disaster prevention and mitigation of transmission lines, in particular to a device for suppressing wind vibration of transmission towers. Background technique [0002] A large number of steel pipe towers are used in UHV power transmission projects, which are composed of many steel pipe components. When the wind flows through the steel pipe member, the vortices fall off alternately from both sides of the cylinder, and each pair of vortices has lift forces that are opposite to each other, and together form a pulsating lift force perpendicular to the flow direction. At the same time, the generation and release of the vortex also produces a pulsating drag force on the column along the flow direction. When the wind speed is appropriate, vortex-induced vibration will occur, which will affect the safety of the structure. The critical onset wind speed of a cylinder is related to its slenderness ratio. A cylinder with a ...

Claims

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Application Information

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IPC IPC(8): E04H12/00E04H12/08E04H9/14
CPCE04H12/00E04H12/08E04H9/14
Inventor 张国力黄国郭金刚祝永坤李博杨风利张宏杰邵帅
Owner EAST INNER MONGOLIA ELECTRIC POWER COMPANY
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