REPAIR OF ROTOR SHAFT NECK AFTER BURN-OUT OF BEARING SHOE ON TURBO-GENERATOR SET DUE TO OIL CUT-OFF

QIAN Yu1; ZHENG Huili2 1.North China Electric Power University

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REPAIR OF ROTOR SHAFT NECK AFTER BURN-OUT OF BEARING SHOE ON TURBO-GENERATOR SET DUE TO OIL CUT-OFF

Thermal Power Generation Vol. 39, Issue 11, Pages: 57-59(2010)

更新时间：2025-09-28

- REPAIR OF ROTOR SHAFT NECK AFTER BURN-OUT OF BEARING SHOE ON TURBO-GENERATOR SET DUE TO OIL CUT-OFF
- 作者机构：
  
  1. 华北电力大学能源与动力工程学院
  2. 河南豫联能源集团有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM311
- Published：2010
- 稿件说明：
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QIAN Yu1, ZHENG Huili2 1.North China Electric Power University. REPAIR OF ROTOR SHAFT NECK AFTER BURN-OUT OF BEARING SHOE ON TURBO-GENERATOR SET DUE TO OIL CUT-OFF[J]. Thermal Power Generation, 2010, 39(11): 57-59.
DOI：

QIAN Yu1, ZHENG Huili2 1.North China Electric Power University. REPAIR OF ROTOR SHAFT NECK AFTER BURN-OUT OF BEARING SHOE ON TURBO-GENERATOR SET DUE TO OIL CUT-OFF[J]. Thermal Power Generation, 2010, 39(11): 57-59. DOI：

摘要

某发电公司的N300-16.7/537/537-8型亚临界双缸两排汽汽轮机组轴振超标导致机组跳闸后

因误操作引起断油轴瓦烧损

轴颈出现裂纹

高、中、低压隔板及叶顶汽封均有较严重的磨损和油系统污染。对此

采取了对转子轴颈去应力回火车削去除裂纹、更换损坏部件、彻底清理油系统等措施

修复后机组振动及瓦温情况良好。

Abstract

After unit trip resulting from shaft vibration exceeding set standard on N300-16.7/537/537-8 type subcritical turbine unit with two cylinders and two exhaust steam outlets

leading to burn-out of bearing shoe due to oil cut-off as a result of misoperation

thereby cracks appeared on the shaft neck

serious abrasion occurred on diaphgrams of HP

MP and LP

and on steam seal at the top of blades

resulting in polution of oil system.For this

the shaft neck has been tempered for eliminating stress

and being turned for abolishing the cracks

the damaged parts being replaced

and the oil system being thoroughly cleaned.After repair

the vibration of unit and the temperature of bearing shoe become good.

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