Earthquake proof performance analysis method of dry type transformer for nuclear power

Abstract

The invention relates to an earthquake proof performance analysis method of a dry type transformer for nuclear power, comprising the following steps of: preliminarily designing a structure, determining a computation model, analyzing an electromagnetic field, statically analyzing the structure, determining earthquake action input conditions, calculating the strength of the computation model, estimating earthquake proof performances, correcting a weak link and carrying out earthquake proof verification tests. When the error between a measured value of the dry type transformer obtained in the earthquake proof verification test and a theoretical calculated value thereof is in the allowable range, the product design is put on stream. The invention more truly simulates movement conditions of the dry type transformer for nuclear power under the action of random earthquake motion, the structural design of the dry type transformer can satisfy the intensity requirement for earthquake proof requirement response spectrums, the intensity calibration can be carried out by using a virtual prototype, and the earthquake proof test frequency of an object prototype can be reduced. The invention can be applied to the earthquake proof design calculation of all models of dry type transformers for nuclear power and has the characteristics of high development efficiency, low development cost and wide application range.

Description

technical field [0001] The invention relates to an analysis method for anti-seismic performance, in particular to an analysis method for anti-seismic performance of a dry-type transformer used in nuclear power. Background technique [0002] Nuclear power equipment is different from general civilian industrial products, especially equipment related to nuclear safety. Its performance and reliability directly affect the safety and economy of nuclear power plant operation. Therefore, the design of nuclear power equipment needs to go through strict design verification, and nuclear power equipment needs to be certified through trial prototypes. Design institutes and manufacturers that design and manufacture nuclear-grade products need to obtain design and manufacturing licenses in accordance with the requirements of the national nuclear regulatory authority. Only then can they engage in the design and manufacture of nuclear-grade products. [0003] Dry-type transformers for nucle...

AI Technical Summary

Problems solved by technology

However, the effect of electromagnetic force is not considered, and the result of not considering the effect of electromagnetic force for dry-type transformers is that the calculated stress values ​​of some components, such as pull plates and nails, are too small, which affects the performance of dry-type transformers for nuclear power. safety

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