タービン発電機水素シール部を要因としたラビング振動抑制技術

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タイトル別名
  • Rubbing-Caused Rotor Vibration Restraint Technology at Hydrogen Seal Portion of Turbine Generator
  • タービン ハツデンキ スイソ シールブ オ ヨウイン ト シタ ラビング シンドウ ヨクセイ ギジュツ

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抄録

The casing of a large scale turbine generator is filled with hydrogen gas as a coolant. To prevent the hydrogen gas from leak, hydrogen-tight enclosures and seal rings are located at both ends of the casing. In some conditions, the gap between the seal ring and rotor shaft might be reduced to cause a rub. The rub sometimes cause a significant vibration. In order to solve the problem, we tried to make a guideline to evaluate the posibility of rubbing vibration occurrence by using each effective parameter with setting some assumption and confirming the consistency between analysis result and actual phenomena.

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