大功率空冷机组末三级动叶片的设计及其频率试验  

Design and Frequency Tests of Last Three Stage Bladings in Large Air-Cooled Steam Turbine

作　　者：褚玉喜[1] 陆伟[1] 刘岩[1] 

机构地区：[1]上海汽轮机有限公司,上海200240

出　　处：《热力透平》2005年第1期12-17,35,共7页Thermal Turbine

摘　　要：　介绍了大功率空冷机组末三级动叶片的设计及其动静频试验情况。通过计算和试验的对比分析,改进了次次末级动叶片的初始设计状态并确定了末三级动叶片围带的最终尺寸。试验表明,大功率空冷机组低压末三级动叶的设计是成功的,叶片能满足空冷机组的长期安全运行要求。The paper presents the design of last three stage bladings in a large air-cooled steam turbine and their dynamic and stationary frequency tests. By comparison and analysis of the calculated and tested results, initial design of L-2 blading is improved and the final dimensions of last three stage bladings are determined. The test shows that the design of LP last three stage bladings in the large air-cooled steam turbine is successful and the blades can satisfy the requirements of long and safety operation.

关 键 词：空冷机组 三级 频率试验 功率 末级动叶片 试验情况 对比分析 叶片围带 设计状态 安全运行 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程] TM621.3[电气工程—电力系统及自动化]