UHV Converter Transformer Vibration Isolation Limiting Device

Abstract

The invention discloses an earthquake-isolation limiting device for an ultra-high-voltage converter transformer. The earthquake-isolation limiting device comprises an upper connecting plate and a lower connecting plate which are parallel up and down; four limiting washers are arranged between the upper connecting plate and the lower connecting plate; the four limiting washers are sequentially connected through a thin rubber layer, a steel plate, a rubber layer and a steel sealing plate from left to right and vulcanized into an integrated structure under the high temperature and pressure; upper and lower ends of the limiting washers are connected with the upper connecting plate and the lower connecting plate respectively; and the limiting washers are arranged around the upper connecting plate and the lower connecting plate and arranged symmetrically relative to the connecting line of the central points of the upper connecting plate and the lower connecting plate. By means of the earthquake-isolation limiting device, the stability is guaranteed, simultaneously, the horizontal stiffness is small, the earthquake-isolation damping effect can be improved, the soft limiting function is provided, and the safety of the earthquake-isolation limiting device under the action of earthquakes can be guaranteed. The earthquake-isolation limiting device is low in construction cost, simple in construction and provided with good social benefits.

Description

technical field [0001] The invention relates to the field of anti-shock, anti-shock, and shock-isolation technologies for buildings, structures, and equipment, and specifically refers to a shock-isolation limiting device for UHV converter transformers. Background technique [0002] The converter transformer is the core electrical equipment in the DC transmission project. The converter transformer has the characteristics of large volume and high quality, and the porcelain bushing is long. Earthquake force and displacement, causing damage to the converter transformer, threatening the operation safety of the converter transformer, directly causing major economic losses, and more importantly, causing indirect major economic losses and casualties, such as affecting earthquake relief after the earthquake work and produce secondary disasters. Through the investigation of many major earthquake disasters at home and abroad, there have been many substation main transformers overturni...

AI Technical Summary

Problems solved by technology

The traditional anti-seismic method is to increase the strength and rigidity of the equipment to resist the earthquake. Under the earthquake, this method may be damaged under the fortification intensity, but it will inevitably cause the converter transformer body to be damaged under the fortification intensity. Faults caused by overturning, sliding, distance changes between the fuel tank and the body, fire or bushing damage, and at the same time, due to the relatively large acceleration, it is easy to cause the fire of the converter transformer

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