扬程

因此在轴向力计算时，可认为平衡腔内压力p不变，且平衡腔内压力p为水泵相应工况下的扬程的5～10%。

Therefore , we could think that the pressure P in balance cavity is not change and its value is lift 's 5-10 % in corresponding working condition .

在矿山开采疏干排水21年时，洪阳水源地的11号井、14号井和补2B井均报废，7号井需更换大扬程水泵方能继续使用。

After 21 years of mining the No.11 well , No.14 well and No.2B well were scrapped , the NO.7 well needs replacing lift pump to use .

能够在全扬程内使用，而保证电机不会过载。

It can be operated within full head , with no overload of motor .

基于CFD的高扬程森林消防泵的内部流场模拟

Simulation for Inner Fluid Field of High-lift Forest-fire-extinguishing Pump Based on CFD

一种高扬程排污泵的CFD设计

CFD Design of a Highlevel Drainage Pump

最后通过CFD计算结果与实测结果的比较也充分证明了极大扬程设计法在提高扬程和效率上的优越性。

At last , the advantage of head maximum approach in raising head and efficiency can be fully proved by the comparison of CFD and testing .

低扬程双向流道泵站是我国独创的泵站型式，为深入了解其流道内流场特性，首次运用基于壁面律的RNGkε的湍流模型对流道进行数值模拟。

The RNG k - ε turbulent model with wall-function law is firstly applied to simulate the flow of the reversible two-way passages pumping station .

低比转速离心泵具有流量小、扬程高的特点，广泛应用于工农业生产各领域。由于低比转速离心泵要求有很高的扬程，因此就相应具有很大的外径D2。

Low specific speed pump has the features of low-flow rate and high head , which is widely used in the field of agriculture , industry and life .

二阶多项式回归数学模型能很好的拟合具有抛物线规律的离心泵流量扬程性能曲线，并经残差分析和F检验证明了模型的有效性。

The second order polynomial regression model can well coincide with the flow capacity-lift head property curve , which shapes as parabola , of centrifugal pump . Based on the result of residue error analysis and F test , the validity of this model has been proved .

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。

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 .

计算结果表明，在这些几何参数中，叶轮出口直径D2对扬程影响最大，叶片出口角2β影响最小，进口直径D1，叶轮出口宽度b2，叶片数Z和叶片长度比R依次地处于它们之间。

The calculating result showed that impeller outlet diameter D2 effects on the head largest of these parameters , vane outlet angle β 2 smallest , inlet diameter D1 , outlet width b2 , vane number Z and vane length ratio R were between them successively .

在改进QJ型深井离心泵结构的基础上，研究提出了一种SJB型新结构深井离心泵及其特殊的水力设计方法，即叶轮的极大扬程设计法和扭曲反导叶法。

A new-type deep well pump SJB was developed by improving the structure of QJ . Based on the research on SJB , a new hydraulic design-impeller head maximum approach and twisted return guide vane method were proposed .

高扬程多级泵站系统老化多指标综合评价

Multi-index evaluation of system aging for multi-grade and high-lift pumping station

大起重量高扬程起重机的钢丝绳干涉

Interference of rope branches of large capacity and high lift crane

低扬程泵站活页式快速闸门断流技术改造措施

Cut-off flow technique with loose-leaf rapid-drop gate at low-head pumping stations

高扬程水泵站初扬水充水系统的设计

Design of the pre-filling water system for high lift pump stations

皮托管泵在小流量超高扬程领域的应用及前景总压梳状管，梳状皮托管

Application of Pitot Pump in Low Flow and Ultra-high Head Situation

大型低扬程水泵机组结构分析比较研究

Analysis and Comparisons of Structures of Large Low Head Pump Units

采用双头螺杆泵，增大了泵的排量和扬程，可实现大泵深抽。

Applying twin-head screw pump to increase the displacement and lift .

低扬程水泵装置起动过渡过程分析

Analysis on Transient Process in Low-Head Pumping Installation during Starting Period

大型低扬程轴流泵的述评

Review on the Large Axial - Flow Pumps with Low Head

离心泵扬程较高，但出水量不大，适用于。

High lift pump , but water is not applicable to .

多级提水灌溉系统的临界经济扬程分析

Analysis of Critical Economic Lift for Multilevel Water Pumping Irrigation System

低扬程提水灌区喷灌节能措施的探讨

Measures to Save Energy for Sprinkler Irrigation in the Low-lift Plain

压差测量仪在水泵扬程测试中的应用

Application of the pressure difference meter to testing the pump lift

影响螺旋离心泵扬程的因素分析

Analysis of influencing factors on the head of screw centrifugal pump

离心泵流量-扬程曲线拟合法探讨

A Discussion On The Flow - Lift Curve Fitting Of Centrifugal Pumps

矿用水泵扬程的测量方法研究

Study of Method about How to Measure Mineral Pump Lift

试论高扬程大流量泵的节能

On the Energy Saving of the High-head and Large - discharge Pump

解决高扬程大启闭力启闭机最佳方案

Optimum solution to the high delivery lift and lifting power headstock gear