离心泵安装高度汽蚀余量及消防水池设置深度

Installation height NPSH of centrifugal pump and setting depth of fire pond

讨论了离心泵汽蚀余量与允许安装高度的能量关系,说明了用汽蚀余量不大于6.00 m来控制车载消防泵取水井水深的规范条文,将导致消防处水池无法设置,当把车载泵的必须汽蚀余量限定为不大于3.00 m时,消防水池可设在地下一层和室外,10.33 m与水泵吸上高度之差不等于汽蚀余量。

The paper discusses about the energy relationship between NPSH of centrifugal pump and allowed installation height,explains specifications that controlling the water level of fire pump by using NPSH that is small than 6.00 m will bring to the result that the fire fighting pond could not be set.The fire fighting pond could be set in underground and outdoor when the NPSH is small than 3.00 m,the difference between 10.33 m and allowed inhalation height is not equal to the NPSH.