npsh

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

离心泵安装高度汽蚀余量及消防水池设置深度

Relationship Between the Pressure Decreasing and NPSH

试分析水泵压力降与汽蚀余量的关系

Discussion on NPSH problems in selecting filter press feed pump

压滤机入料泵选型中汽蚀余量问题的探讨

" NPSH for centrifugal , mixed flow and axial pumps "

GB/T13006-1991离心泵、混流泵和轴流泵汽蚀余量

Computing Method on NPSH of Vane Pump

叶片泵汽蚀余量的计算方法

The change of the contents of nonprotein sulfhydryl ( npsh ) in mice 's tissues when hypoxia

缺氧时小鼠组织中非蛋白质巯基（NPSH）含量的变化

In addition , this paper provides the calculating method of the maxium dynamic NPSH ( Net Positive Suction Head ) for the suction of feed pump .

在此基础上，进一步提供了更为正确的给水泵最大动态汽蚀余量△h（max）的计算方法。

The results show that ( 1 ) With the outlet diameter of injection pipe increases , NPSH of centrifugal pump at first decreases and then increases , head and efficiency decline .

研究结果表明：（1）随着喷射管出口直径的增大，离心泵汽蚀余量值呈现先减小后增大的趋势，扬程和效率都有所下降，最佳喷射管出口直径为3mm。

A exponential polynomial fitting on cavitation curve of a pump is set up to calculate NPSH more reasonably and to make a computer deal with the test data of a pump cavitation more accurately and reliably .

提出了一种水泵汽蚀试验数据的拟会方法，较为合理地确定临界汽蚀余量，使得用计算机处理汽蚀试验数据更为准确、可信。

The valid range of the spraying angle is10 °~ 30 ° . ( 3 ) With the injection pipe increases , NPSH of centrifugal pump at first decreases and then increases , head and efficiency decline .

随着喷管数量的增多，离心泵汽蚀余量值呈现先减小后增大的趋势，扬程和效率逐渐下降，最佳喷射管个数为8。

In order to make suggestions for engineers and researchers who work in pump industry to calculate NPSH , the causation of cavitation occurred in a slurry pump theoretically is analyzed . The relationship between NPSH and inlet geometry parameters of impeller is analyzed .

从理论上分析了泵内产生汽蚀的原因，在对离心式渣浆泵与普通离心泵汽蚀特性比较的基础上，分析了渣浆泵汽蚀余量与叶轮入口几何参数关系；

The arithmetic formulae were analyzed and deduced , including lift of pump , shaft power , output power , efficient of pump , NPSH , installing height and the max installing height . Based on the characteristic parameters from the pump examination a pump characteristic curve was processed .

分析推导了水泵扬程、轴功率、输出功率、泵的效率、实际汽蚀余量、安装高度和最大安装高度的计算公式，选用实验水泵检测其性能参数，绘制了水泵的实际性能曲线。

Method Mice were exposed to gaseous PFIB for 5 minutes in a flow-past whole-body exposure system . The changes of total sulfhydryls ( TSH ), non protein sulfhydryl ( NPSH ) and protein sulfhydryl ( PSH ) in the lung tissues were assayed by Ellman 's reagent method .

方法采用动态吸入PFIB周身暴露装置染毒小鼠，Ellman试剂法检测PFIB染毒前后小鼠肺组织内巯基（总巯基、蛋白巯基和非蛋白巯基）的含量变化。