它具有扬程高、流量小的特点。
介绍了用压差测量仪测试水泵扬程的方法。
It is described how to measure the pump lift with pressure difference meter.
流量不足或扬程太低。
料浆的循环靠大流量、低扬程的轴流泵推动。
The circulation of materials is pushed by a big flow and low-lift axial flow pump.
适用于清洁的或污染的、大流量、低扬程的液体。
These pumps are suitable for clean or polluted, large quantities and low heads.
反之，已知流量、扬程和效率，也可求出轴功率。
Instead, the known flow, head and efficiency, shaft power can also be obtained.
用户确认泵出口去丁醇处理装置的最大扬程是合适的。
Ctc maximum head is suitable for pump discharge to butanol handling facility.
输送水时，叶轮切割后，泵的扬程、轴功率、效率都下降。
When pumping water, the head, shaft power and efficiency of the pump decrease with the reducing in impeller diameter.
水温越高，在局部的真空下水更容易煮沸，因此减少了扬程。
The higher the water temperature , the more likely it is to boil when exposed to a partial vacuum , thus reducing suction lift.
低比转速泵几何参数对扬程的影响，应当侧重于综合影响的研究。
The influences of geometrical parameters on low specific pump head should be emphasized on comprehensive influence.
论述了离心泵转速提高对流量、扬程、功率、汽蚀余量等参数的影响。
The paper discusses the effect of rotation rate on property parameters such as flow volume, delivery lift, power and cavitation etc.
具有全扬程泵的特点，能够在全扬程范围内工作而保证电机不会过载。
It has full head feature. It can operate within the full head scope with assurance that the motor will not be overload.
数值结果表明，间隙增加，扬程下降，特别是越在小流量工况下越明显。
The numerical result shows increasing the tip clearance will reduce hydrostatic head, especially at small flow rate.
介绍了如何通过计算消防水泵的扬程、流量和功率来选择消防水泵的型号。
The paper introduces how to choose fire water pumps through calculation of stroke, flow and power of fire water pumps.
水力部分：采用优秀水力模型设计，使水泵流量、扬程、效率三者更为合理。
Waterpower part: adopting the perfect waterpower model design to make the runoff, lift and efficiency of the pump more reasonably.
本文介绍了国内关于经济扬程现有的几种计算方法，并分别进行了分析评价。
Some useful methods provailed in our country are presented here for calculating the economical head in pumping irrigation.
在效率合格的情况下，井用潜水泵的叶轮扬程和流量偏高时会产生无功损耗。
When submersible pumps for wells have qualified efficiency, the high head and flow of impellers will generate reactive power loss.
低扬程泵装置有多种型式，竖井式贯流泵装置是一种较新的低扬程泵装置型式。
Low head pump system has several types, among which pit tubular pump system is a new one.
在直线压缩机的应用设计中，油泵的扬程对泵油量的影响非常小，可以忽略不计。
In linear compressor design. The delivery lift has little influence on oil flow rate, so it can be ignored.
在计算泵提供给气体的扬程时给出了三种算法，并对实例计算结果进行了分析比较。
About the calculation on the discharge head provided to gas by pump, the paper presents three kinds of calculation methods, analyzes and compares the case calculation results.
计算了泵的扬程、轴功率和效率，并与试验进行了对比，验证了计算方法的可行性。
By comparing the calculated water head, shaft power and efficiency with the experimental results, the method was proved to he feasible.
研究表明，流量、扬程、轴功率和效率切割指数具体数值都与普通清水离心泵不同。
The results show that the values of the flow rate, head, shaft power and efficiency trim exponents differ from existing trim exponents for normal centrifugal water pumps.
多级离心泵主要用于高扬程的应用环境，应用于深井、高层住宅的供水、消防供水等。
Multi-stage centrifugal pump is mainly used for high head applications environment, use deep, high-rise residential water supply, fire water supply.
介绍了离心式水泵扬程和流量确定方法，并对扬程调整改造中的节能技术进行了探讨。
The paper introduces the method to determine the stroke and flow of centrifugal pump, and discusses the saving-energy technology in the process of stroke regulation.
在正常流量以上，当速度分布相当稳定时，压力和总扬程可由速度分布推得，并具有较高精度。
At normal delivery and above, when velocity distributions are fairly steady, the pressure and total head generated may be derived from the velocity distributions with reasonable accuracy.
从性能上讲，该型式叶轮效率高和普通闭式叶轮相差不大，但用该型式叶轮泵扬程曲线较为陡降。
From the performance perspective, the type of impeller and the general efficiency closed impeller or less the same, but the type of impeller pump head curve dropped more.
叶片型线的选择应满足边界层不分离条件及由欧拉方程——泵的基本方程所确定的理论扬程条件。
The choice of vane curve should satisfy the conditions of boundary layer non-separation and theoretical distance head by Eular equation-the basic equation of pumps.
轴流泵叶片水力矩随流量变化的关系曲线存在一个马鞍区，并与流量-扬程曲线的马鞍区相对应。
There exists a saddle type zone in the hydraulic moment curve of axial-flow pump blades which corresponds to the saddle zone of discharge-head characteristic curve of the pump.
轴流泵叶片水力矩随流量变化的关系曲线存在一个马鞍区，并与流量-扬程曲线的马鞍区相对应。
There exists a saddle type zone in the hydraulic moment curve of axial-flow pump blades which corresponds to the saddle zone of discharge-head characteristic curve of the pump.
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