タービン発電機用ブラシのブラシ圧力加圧機構の振動伝達特性解析  [in Japanese] Mechanical Vibration Transfer Function Analysis for Turbine Generator Brush Pressuize Mechanism  [in Japanese]

近年,国内における火力・原子力発電所の電力供給はおよそ8割を占め,それらは蒸気タービン駆動のタービン発電機によるものである.しかし,いくつかのプラントで摺動機構におけるコレクタリング表面にゴーストマークと呼ばれる白濁した傷痕が生じる事例がある.本研究では,機械的特性に着眼し加振器を使用した加振応答試験を行い,タービン発電機の摺動機構における機械的特性について検証を行った.本報告では,バネ圧力増加試験および防振ゴム効果特性試験,ブラシ弾性特性試験について試みた結果を報告する.

The power supply of thermal power and the nuclear plant that can be put within the country accounts for about 80 percent, and they are the one with the turbine generator of the steam turbine drive. However, it is confirmed that the streak called a ghost mark occurred on the sliding surface of collector ring. In this research, it aimed at a mechanical characteristic, the excitation response examination that used the excitation machine was done, and a mechanical characteristic of the sliding mechanism of the turbine generator was verified. In this report, it is discussed that effect of the increasing spring pressure, the using vibration reduction rubber and the brush elasticity.