动力机器框架式基础的隔振研究

朱 彤;陈春雷

振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 121-124.

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PDF(1300 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 121-124.
论文

动力机器框架式基础的隔振研究

  • 朱 彤;陈春雷
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STUDY ON VIBRATION FOR FRAME FOUNDATION IN POWER PLANT

  • ZHU Tong;CHEN Chun-Lei
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摘要

针对辽宁某热电厂大型汽轮机发电机组框架式基础的局部振动问题,通过在基础局部引入弹簧阻尼器隔振元件,导出了隔振基础的动力方程。并建立有限元模型,计算框架基础振动在频域内的响应,同时将隔振基础控制点的分析结果与非隔振基础的动力分析结果进行比较,结合算例分析表明:采用弹簧阻尼隔振元件对汽轮发电机组框架式基础进行隔振控制是正确和可行的。

Abstract

In this paper,the local vibration problem of the space frame foundation of power plant in the LiaoNing is studied.Spring-damper components are added to the local of the frame foundation,the equations of motion for helical-spring foundation is derived. A FEM model is established and the structure’s frequency domain vibration response is obtained by the dynamic calculation of the FEM model.Meantime,the dynamic response results of the isolated frame foundation are compared with those of the non-isolated frame foundations.The numerical examples indicate that it’s a good way to control vibration by adding spring-damper components to the frame foundation in power plant,and also validate the correctness and feasibility of this method.

关键词

振动控制 / 隔振分析 / 框架式基础 / 弹簧阻尼元件 / 有限元模型

Key words

vibration control / vibration-isolation analysis / frame foundation / spring–damper components / The FEM model

引用本文

导出引用
朱 彤;陈春雷. 动力机器框架式基础的隔振研究[J]. 振动与冲击, 2010, 29(2): 121-124
ZHU Tong;CHEN Chun-Lei. STUDY ON VIBRATION FOR FRAME FOUNDATION IN POWER PLANT[J]. Journal of Vibration and Shock, 2010, 29(2): 121-124

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