局部应力应变法估算汽轮发电机组轴系扭转疲劳寿命  

EVALUATION FOR TURBINE-GENERATOR SHAFT TORSIONAL FATIGUE BY USING A LOCAL STRESS-STRAIN METHOD

作　　者：张学延[1] 黄秀珠[1] 孙岱霞 

机构地区：[1]电力部西安热工研究所

出　　处：《热力发电》1994年第6期12-17,23,共7页Thermal Power Generation

摘　　要：本文在借鉴国外汽轮发电机组大轴材料的扭转疲劳寿命曲线的基础上,用局部应力应变法和累积疲劳损伤准则估算了汽轮发电机组轴系扭转疲劳,并依此编制了计算程序,还应用该程序对国产某台200MW机组在发电机端部短路,非同期并列等恶劣工况下轴系某些薄弱部位进行了疲劳寿命损耗估算。Based on the torsional fatigue test results of shaft materials of large turbine-generators in abroad this paper applies alocal stress-strain mcthod to analyse torsinal fatigue life of turbine-generator and work out a corresponding computer pro-grams. A oalculation is finsihed to predict fatigue life loss in some weak positions of a 200MW turbine-generator shaft dur-ing some abnormal operating conditions, such as generator terminal short-circuit and nonsychronization.

关 键 词：汽轮发电机组 轴系扭转 疲劳寿命 

分 类 号：TM311.06[电气工程—电机]