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