The Study Of Vibration Isolation To The Large Transformer Foundation

Transformer with all kinds of electrical equipment in substation will produce vibration while running,the vibration produce environmental vibration and noise pollution through solid (foundation,building structure) spread or airborne.Large transformer as a kind of dynamic machine, the design and construction of its foundation is an important part of engineering application.Considering the spread of the vibration’s reduction from the perspective of the transformer foundation, the foundation’s vibration isolation research under the premise of guaranteed foundation stability obviously has the actual engineering significance.The paper mainly focuses on engineering design of regular large transformers foundation, considering the environmental vibration excitation of large transformers, a more systematic research of "Transformers-Foundation-Soil" system’s vibration spreading law and suppression strategy is launched by using ANSYS finite element software.The main contents are as follows:1. Summarizes the generation mechanism and spreading law of transformer vibration, systematically elaborates the basic vibration reduction measures and the related results.2. The large transformer structure and regular foundation are briefly introduced, in accordance with commonly used engineering calculation method of dynamic machine, the paper conduct the vibration and vibration spread through soil analysis of transfer foundation,based on the semi-rigid model,the paper also conduct the numerical calculation analysis of its vibration and spread by using ANSYS software,The characteristics and law of the existing foundation’s vibration spread are analyzed based on the work above.3. Through the spring set transformer based damping isolator composed of vibration isolation foundation, finite element analysis of transformer vibration isolation foundation-foundation system, selection of different isolation design parameters for the tank surface vibration and impact isolation effect are discussed.4. Considering vibration atreducing measures based on the foundation-soil system,stratified structure on the foundation are used, the vibration isolation rubber is set up and so on, the paper anlyzed the foundation’s spread law under various isolation measures based the methods above.