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往复泵有效净正吸入压头

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Selected 泵, 往复泵, 压头.
  • 泵
  • 往复泵
  • 压头
  • 泵
  • 往复泵
  • 压头
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 计算依据:HG/T 20570.5-95
往复泵有效净正吸入压头
名称 单位 公式/来源 值
1 输入
2  泵吸入侧容器最低正常工作压力,P1 kPa 3200
3  泵进口条件下液体饱和蒸汽压,Pv kPa 150
4  泵进口条件下液体的相对密度,γ t/m³ 1
5  从吸入液面到泵基础顶面的垂直距离,H1 m -2.5
6  吸入容器出口至泵吸入口之间正常流量下管道摩擦压力降,ΔP1 kPa 200
7  正常流量下泵吸入管道上设备压力降之和,ΔPe1 kPa 50
8  泵流量安全系数,K / 2
9  往复泵脉冲损失系数,Kacc / 1.5
10  往复泵吸入管线加速度损失,H1acc m 4.6
11 结果
12  有效净正吸入压头,NPSHa m 1 99.93363914
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