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混流式水轮机轴向动荷载识别
引用本文:王海军,练继建,杨敏,王日宣.混流式水轮机轴向动荷载识别[J].振动与冲击,2007,26(4):123-125.
作者姓名:王海军  练继建  杨敏  王日宣
作者单位:天津大学,建筑工程学院,天津,300072
基金项目:高等学校博士学科点专项科研项目;教育部跨世纪优秀人才培养计划
摘    要:水轮机轴向动荷载是机组总轴向力的主要组成部分,其特性直接影响水电站厂房设计和安全经济运行。合理对其进行评估具有重要的意义。文中以一水电站厂房结构和机组联合现场振动测试数据为基础,将厂房结构和机组视为一耦联体系,采用改进遗传算法和有限元技术编写程序,对水轮机轴向动荷载进行识别。识别结果比较理想。该方法简单有效,具有较强的实用性。

关 键 词:水电站  轴向动荷载  识别技术  遗传算法  有限元
修稿时间:09 5 2006 12:00AM

IDENTIFICATION OF AXIAL DYNAMIC LOAD OF A FRANCIS TURBINE
WANG Hai-jun,LIAN Ji-jian,YANG Min,WANG Ri-xuan.IDENTIFICATION OF AXIAL DYNAMIC LOAD OF A FRANCIS TURBINE[J].Journal of Vibration and Shock,2007,26(4):123-125.
Authors:WANG Hai-jun  LIAN Ji-jian  YANG Min  WANG Ri-xuan
Abstract:The axial dynamic load of a Francis turbine is the main component of the total axial loads of the corresponding hydropower generating unit.It can directly influence on the design and its safely and economically operating of a hydropower station.That it is reasonablly evaluated is very important.Based on the data obtained from one powerhouse structure and dynamic field test for a generating unit,considering the structure and the unit as a coupled system,a program is developed with the modified genetic algorithm(MGA) and finite element method(FEM) to identify the axial dynamic load of a francis turbine.The identification results from typical examples show that the proposed program is simple,effective and applicable.
Keywords:hydropower station  axial dynamic load  identification technique  genetic algorithm  finite element method
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