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A Design Method for Anti-seismic Reinforcement and Vibration and Noise Reduction of Large Transformer

A technology of vibration reduction and noise reduction, design method, applied in transformer/inductor noise damping, transformer/reactor installation/support/suspension, inductance/transformer/magnet manufacturing, etc. Problems such as the working performance of the transformer and the weak parts of the box against earthquakes can achieve the effects of reduced amplitude, simple structure, and suppression of noise pollution.

Inactive Publication Date: 2018-07-27
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned anti-seismic transformation and foundation isolation, the rubber isolation bearing will change the basic dynamic characteristics of the normal operation of the transformer, amplify the vibration of the transformer itself and the structural noise, and then affect the normal performance of the transformer. Displacement, causing equipment coupling and damage
Reinforce the transformer box with section steel and steel plate to increase the rigidity of the transformer box is limited, and the welding connection between the transformer box and the stiffener ribs is likely to become the weak part of the box for earthquake resistance

Method used

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  • A Design Method for Anti-seismic Reinforcement and Vibration and Noise Reduction of Large Transformer

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Embodiment 1

[0044] A design method for anti-seismic strengthening and vibration reduction and noise reduction of a large transformer, comprising the following steps: according to the external shape and size of the transformer box 1 without anti-seismic reinforcement and the characteristics of vibration and noise of the transformer to be obtained, the transformer box 1 is based on The cube box is composed of the top cover plate and the bottom plate arranged at the upper and lower ends, and the side plates arranged on the four sides. The top cover plate, the bottom plate and the side plates are all sealed and spliced ​​by plates, and the plates are welded to the space frame 3 Transformer box body 1 is provided with parts such as transformer radiator 4, bushing 6, and the space frame 3 that is designed as the stressed skeleton of large-scale transformer, its side wall is grid shape, and space frame 3 is made up of transverse frame parts 31, The longitudinal frame part 32 and the vertical fram...

Embodiment 2

[0048] A design method for anti-seismic strengthening and vibration reduction and noise reduction of a large transformer, comprising the following steps: according to the shape and size of the transformer box 1 without anti-seismic reinforcement and the desired characteristics of vibration and noise of the transformer, the transformer box 1 is set in the The top cover plate and bottom plate at the upper and lower ends, and the side plates arranged on the four sides constitute a cubic box. The top cover plate, bottom plate and side plates are all sealed and spliced ​​by plates, and the plates are welded to the space frame 3. The design As the space frame 3 of the stressed skeleton of a large transformer, its side wall is grid-shaped, and the space frame 3 is connected into a space by a transverse frame part 31, a longitudinal frame part 32 and a vertical frame part 33. The frame part 32 and the vertical frame part 33 are all rectangular frame structures made of rectangular steel...

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Abstract

The invention relates to a seismic reinforcement and vibration and noise reduction design method for a large transformer. The method comprises the following steps: designing a space frame (3) as a stress skeleton of a transformer box body (1) according to the shape and dimension of the transformer box body (1) free of seismic reinforcement and wanted frequencies and amplitudes of vibration and nose of the transformer, and then fixing the transformer box body (1) on the space frame (3); installing other components of the transformer in the transformer box body (1) or on the space frame (3) or the transformer box body (1); and finally obtaining the large transformer subjected to seismic reinforcement and vibration and noise reduction. Compared with the prior art, the design method has the advantages that the seismic capacity of the transformer is effectively improved; the structure is simple; the stress is clear; and the vibration and the noise of the transformer can be reduced.

Description

technical field [0001] The invention relates to a design method for strengthening and transforming a large transformer, in particular to a design method for anti-seismic reinforcement and vibration reduction and noise reduction of a large transformer. Background technique [0002] With the development of my country's power transmission and transformation projects in the direction of high voltage, ultra-high voltage and ultra-high voltage, a large number of key transformation equipment - large (ie high voltage, ultra-high voltage and ultra-high voltage) power transformers and Converter transformer. These large transformers have large volume and quality, high cost, and a large number of bushings are installed on the transformers. In previous earthquakes, due to the power amplification of the transformer box, the transformer bushings were seriously damaged, resulting in the shutdown of substations and large-scale power outages in the power grid. In addition, when a large trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/06H01F27/33H01F41/00
CPCH01F27/06H01F27/33H01F41/00
Inventor 谢强马国梁
Owner TONGJI UNIV