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題 名 | 核電廠再循環泵轉子動態分析=Rotordynamic Analysis for the Reactor Recirculation Pump of Nuclear Power Plant |
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作 者 | 周永樂; 林正彥; 林翰榮; 藍文察; 李芳德; | 書刊名 | 台電工程月刊 |
卷 期 | 602 1998.10[民87.10] |
頁 次 | 頁66-74 |
分類號 | 449 |
關鍵詞 | 轉子動態; 模態測試; 臨界轉速; 振型; Rotordynamics; Modal testing; Critical speed; Mode shape; |
語 文 | 中文(Chinese) |
中文摘要 | 為建立核電廠再循環泵轉軸軸裂振動特性監測,須先瞭解再循環泵於運轉時的自 然頻率及臨界轉速, 此結果有助於運轉操作及振動監測之參考, 而轉子動態分析( Rotordynamic Analysis )是建立轉軸系統的分析模型, 以獲得轉軸系統的臨界轉速( Criticl Speed )及振型( Mode Shape )之最佳工具。本文以核一廠再循環泵(中空軸) 為例, 先建立再循環泵葉輪轉子無拘束( Free-Free )的分析模型, 包括葉輪、 軸頸( Journal )及轉軸,並以模態測試驗證轉子分析模型的正確性,再建立馬達轉子的分析模型 以轉子動態分析軟體進行含聯軸器( Coupling Spacer )、 馬達轉子與軸承之整體再循環 泵的臨界轉速及振型分析。最後,再將分析結果與實際量測的泵軸振動位移頻譜相互比對, 以驗證頻譜圖中結構特性的反應頻率,結果顯示,頻譜圖中的共振丘頻率與分析結果兩者相 差約 8.8% ∼ 15.3%。 |
英文摘要 | Natural frequencies and critical speeds of the pumps under operating condition are key parameters for online monitoring of shaft crack of pumps. The rotordynamic analysis is the best way to generate numerical rotor model and to determine the critical speeds and mode shapes of the rotor system. In this paper, the reactor recirculation pump of Chinsham nuclear power plant was used as an illustration example. Natural frequencies of the rotor model of impeller-shaft with free-free boundary condition were solved by the rotordynamic analysis software, RSR (Rotordynamics-Seal Research). Experimental modal testing results were used to verify the impeller-shaft model. The motor, coupling spacer and bearing were then added to the impeller-shaft model. Critical speeds and mode shapes of the whole pump system were also determined by the RSR software. The analytical results were compared with the horizontal displacement spectrum of pump shaft measured by proximity. The results showed that difference between the measured structural dynamic characteristics of the pump and the numerical rotordynamic analysis was witin acceptable range, in this case 8.8% to 15.%. |
本系統中英文摘要資訊取自各篇刊載內容。