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Shock isolation device for electrical equipment

A technology for electrical equipment and shock isolation, which is applied in the field of power grid disaster reduction, can solve problems such as small vertical stiffness, electrical equipment falling off the platform, and shock isolator breaking, so as to improve seismic performance, prevent electrical equipment from being damaged, and dissipate earthquakes energy effect

Pending Publication Date: 2019-04-12
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Due to the small vertical stiffness of conventional rubber isolators, when subjected to vertical earthquake action, if the vertical earthquake action is greater than gravity, the isolator may be broken, causing electrical equipment to fall off the platform;
[0005] (2) Existing limit devices for horizontal shock isolators can only limit single-horizontal displacement, and multiple limit devices need to be installed in different horizontal directions to ensure the limit of each horizontal displacement, which is poor in economy

Method used

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  • Shock isolation device for electrical equipment
  • Shock isolation device for electrical equipment

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Embodiment 2

[0087] The seismic isolation device described in this embodiment is aimed at a 110kV main transformer in a Class II site with a design basic seismic acceleration of 0.4g. Eight seismic isolation devices are arranged for a single transformer, and the maximum horizontal displacement is 0.1m.

[0088] In this embodiment, the movable plate is made of Q235 steel, and it is viewed as a ring structure when viewed from above. Wherein the outer diameter of the upper disc is 300mm, and the outer diameter of the lower disc is 200mm.

[0089] The lower bottom surface 2 of the carrier in this embodiment is made of Q235 steel, the bottom is a 700mm×700mm square steel plate with a thickness of 20mm, and 4 round holes are opened at the 4 corners of the square plate for installing anchor bolts. There are two ring-shaped structures on the square plate, the inner ring is used to limit the displacement of the ball, and the outer ring is used to connect with the movable disc through a spring.

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Abstract

The invention relates to a shock isolation device for electrical equipment. The shock isolation device is arranged between a base and the electrical equipment; the device comprises a load-bearing element, a rolling element and a movable contactor; the load-bearing element is of a hollow tubular structure with a bottom surface and is fixedly connected with the base; the rolling element is rolled inthe load-bearing element; and the movable contactor is arranged on the rolling element, and the electrical equipment is fixedly connected on the movable contactor. The shock isolation device providedby the invention is simple in structure and convenient to install, and can dissipate the earthquake energy, improve the anti-seismic performance of the electrical equipment, and ensure the normal operation of the electrical equipment under the action of earthquake.

Description

technical field [0001] The invention relates to a shock isolation device in the technical field of power grid disaster reduction, in particular to a shock isolation device for electrical equipment. Background technique [0002] As an important part of lifeline engineering, people pay more and more attention to the anti-seismic ability of power equipment. The transformer-type electrical equipment in the substation mainly includes transformers, high-voltage shunt reactors, etc. The equipment is large in size and relatively low in the center of gravity. It is directly connected to the foundation, and its natural vibration frequency is at the preeminent frequency of earthquake motion, so it is highly vulnerable to earthquakes. [0003] At present, rubber damping shock-isolation devices are mainly used in electrical equipment, which mainly have the following problems: [0004] (1) Due to the small vertical stiffness of conventional rubber isolators, when subjected to vertical ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/08
CPCF16F15/08
Inventor 孙宇晗程永锋卢智成王晓宁邱宁高坡张谦林森孟宪政
Owner CHINA ELECTRIC POWER RES INST
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