頁籤選單縮合
題 名 | A Review on Determination of the Minimum Flow for Centrifugal Pumps |
---|---|
作 者 | Yu,Ching-fu; | 書刊名 | 能源季刊 |
卷 期 | 29:3 1999.07[民88.07] |
頁 次 | 頁114-134 |
分類號 | 446.74 |
關鍵詞 | 最佳效率點; 離心泵; 最佳連續穩定流; 最佳連續熱流; 吸入端迴流; 端出端迴流; 零流量下所需動力; BEP; Best efficiency point; Centrifugal pump; Minimum continuous stable flow; Minimum continuous thermal flow; Suction recirculation; Discharge recirculation; Power at shut-off; |
語 文 | 英文(English) |
中文摘要 | 一般而言,離心泵所需遲轉點因工業情況而異;在泵的應用上,如何決定 運轉點在最低流旺以上就扮演一個重要的地位。不同泵浦製造廠有不同的經驗方法來決定自 己產品離心泵的最低流量。本篇報告就最近決定離心泵最低流量各種不同方法作一回顧,並 且以一些實際例子代入不同方法作計算。藉此給多泵浦使用者得知何處為危險運轉點,如何 避開泵浦受損,進而減低泵浦維修費用。結果顯示不同方法決定最低流量的基本原則相類似 。泵浦形狀和泵浦系統條件為決定最低流量的主要二個因素。最低連續熱流不同於最低連續 穩定流。主要導致泵浦噪音和振動損壞的因素 -- 吸入端迴流和輸出端迴流,二者和最低流 量具有密切的關係。因此強烈建議泵浦使用者在最佳效率點運轉泵浦,如果無法達到最佳效 率點時,至少也要在最低流量以上作運轉。 |
英文摘要 | Since the required operation point of centrifugal pumps generally varies with the industrial situation, determination of the operation point above the minimum flow for the centrifugal pumps subsequently play an important role in the pump application. Different pump manufacturers have different empirical methods to determine the minimum flow for their centrifugal pumps. This report presents a review of recent methods to determine the minimum flow for centrifugal pumps and does some practical examples in order give references to the pumps users where are the risk operating points, the way to prevent the damages of pumps, and subsequently to reduce the cost of pump maintenance. The results show that the basic rules to determine the minimum flow are similar in different methods. Both geometries of pumps and the pumping system's conditions are the main factors to determine the minimum flow. The minumum continuous thermal flow is different from the minimum continuous stable flow. The suction recirculation and the discharge recirculation, which are one of the amin factors to cause noise and vibration damage of pumps, have an intimate relationship with the minumum flow. It strongly recommends the pump users to run their pumps at the BEP (Best Efficiency Point); or to run the pumps aboe the minumum flow at least if unable to reach the BEP. |
本系統中英文摘要資訊取自各篇刊載內容。