200MW机组中压转子末级叶片拉筋改进

介绍了邯郸热电厂200MW机组大修中，中压转子末级叶片组频率落入危险的共振区。为保证叶片组频率的合格，对中压转子末级叶片拉筋进行了改进，由成组焊接拉筋改成整圈松拉筋型式，使汽轮机的经济性，安全性和大修工期都得到了可靠的保证。

Improve Intermediate Pressure Rotor's Last Stage Blade Lacing Wire of 200MW Unit

This paper introduces the Handan Co generation Power plant, intermediate pressure rotor's last stage-blade frequency reach dangerous resonance area when 200MW units were overhauled .In order to ensure the qualification of batches of blades frequency, we improved intermediate pressure rotor's last stage blade and changed batches of jointing lacing wire into circles of loose lacing wire, so that make the reliable assurance of economy safety and overhaul time limit for project of steam turbine.