泵效率
渣漿泵效率是指有效功率Pe與軸功率P之比，又稱為泵的總效率，用來衡量泵工作的經(jīng)濟性,用η來表示。η越高，說明泵的損失越小。
η=Pe/P
除上述工作參數(shù)外,還有汽蝕余量、比轉速等，這些參數(shù)將在后面的章節(jié)中介紹。
為方便用戶使用,泵制造廠家提供兩種性能資料。一是泵樣本 ,樣本中除了泵的結構、尺寸外，主要提供一套各性能參數(shù)間關系的性能曲線，以便用戶全面了解泵的性質(zhì)。二是在每臺泵的機殼上都有一塊銘牌 ，銘牌上列有該泵的基本性能參數(shù)。如IS65-50-125型單級單吸懸臂式離心泵的銘牌為渣漿泵
銘牌上泵的型號IS65- 50- 125，其中IS表示國際標準離心式泵;65表示進口直徑為65mm;50表示出口直徑為50mm;125表示葉輪名義直徑為125mm。
The efficiency of slurry pump refers to the ratio of the effective power PE to the shaft power P, also known as the total efficiency of the pump, which is used to measure the economy of the pump operation, expressed by η. The higher η, the smaller the loss of the pump.
ETA =Pe/P
In addition to the above working parameters, there are NPSH, specific speed, etc. these parameters will be introduced in later chapters.
For the convenience of users, the pump manufacturer provides two kinds of performance data. One is the pump sample. In addition to the structure and size of the pump, the sample mainly provides a set of performance curves of the relationship between performance parameters, so that users can fully understand the properties of the pump. Second, there is a nameplate on the casing of each pump, on which the basic performance parameters of the pump are listed. For example, the nameplate of is65-50-125 single stage single suction cantilever centrifugal pump is slurry pump
The model is65-50-125 of the pump on the nameplate, wherein is refers to the international standard centrifugal pump; 65 refers to the inlet diameter of 65mm; 50 refers to the outlet diameter of 50mm; 125 refers to the nominal diameter of the impeller of 125mm.
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