40MW汽轮发电机定子铁心压圈与齿压板压指间隙问题的分析与处理  

Analysis and Treatment on Gap Problems between the Stator Core Pressure Ring and Pressure Finger of the Tooth Pressure Plate of 40MW Turbine Generators

作　　者：王继明 陈少军 WANG Jiming;CHEN Shaojun(Dongfang Electric Corporation Dongfang Electric Machinery Co.,Ltd.,618000)

机构地区：[1]东方电气集团东方电机有限公司,618000

出　　处：《电机技术》2024年第4期24-27,共4页Electrical Machinery Technology

摘　　要：文章针对一台40MW汽轮发电机定子压圈与齿压板压指之间存在间隙的问题,从零部件质量、波浪度和定位筋阻滞作用方面进行分析,并逐一验证。通过大规模的数据收集、整理、分析与验证,提出支撑环合缝处焊接应力收缩是导致压圈与齿压板压指间隙问题的根本原因。为了避免后续生产时再次发生此类问题,提出了具体处理与预防措施,有效提升了发电机的制造质量。Aiming at the problem of gap between the stator pressure ring and tooth plate pressure finger of a 40 MW turbine generator,the paper analyzes and verifies each of these problems in terms of component quality,waviness and blocking effect by the positioning rib.Through large-scale data collection,collation,analysis and verification,it is concluded that the welding stress shrinkage at the joint of the support ring is the root cause of the gap between the pressure ring and the tooth pressure plate.In order to prevent the recurrence of such problems in subsequent production,specific treatment and preventive measures are put forward,which effectively improve the manufacturing quality of the generator.

关 键 词：定子铁心 压圈与压指的间隙 支撑环 焊接收缩变形 

分 类 号：TM303[电气工程—电机]