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.
它使水泵扬程不确定，而是沿管路特性曲线移动(参见图3)。
It pumps lift the uncertainty, but along the pipeline characteristics of mobile (see Figure 3).
本文首先根据供水系统的管阻特性曲线和水泵扬程特性曲线，分析了恒压供水的原理；
This paper explained the principle of constant-pressure water supply on the basis of characteristic curve of pipeline resistance and water pump head.
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.
所提出的方法，不仅能得出一个优化的干管管网，而且还能确定出所需水泵扬程及流量，并确定水泵型号。
By using this method presented in this paper, not only the optimum design of main pipe net was given, but the water head and flow and pump type were decided.
通过对无压锅炉与有压锅炉供热系统水压图的分析和比较，发现二者的主要区别在于循环水泵的扬程不同，即循环能耗不同。
Through the analysis and comparison of water pressure chart of press boiler and no-press boiler, it is found that their main difference is circulating pump delivery, namely different consumption.
水泵精选意大利、台湾大流量高扬程水泵，使用安全超静，省电耐用。机体外壳用静电粉体涂料烤漆，美观大方。
Pump selection Italy, Taiwan, high flow high head pumps, the use of security ultra-quiet, energy-saving durable electrostatic powder coating with the body shell paint, nice.
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.
此外，有部分用户还随意水泵进、出管的管径，这些对扬程也有一定的影响。
In addition, some users can pump into the pipe diameter, which head will have an appreciable effect.
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.
根据低扬程水泵装置的研究方法可以多样化的观念，提出了将泵站进水流道模型从水泵装置模型中分离出来单独进行水力损失测试的新方法。
Based on the theory of variety for researching a low head pump system, a new method to separate inlet conduit from pump system was put forward for measuring its hydraulic loss.
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.
应用上述模型，可进行机压管道式喷灌系统配水干管管网的优化计算，可确定水泵最优扬程及干管各管段尺寸最优值，以使干管管网系统年费用值达最小。
With the model, the design of sprinkler pipeline network can be optimized, the optimal lift head and pipe size were determined, and the annual operational cost was minimized.
介绍了扬程特性、管阻特性和水泵效率的相对值近似表达式。
The paper introduces the approximate formula for the head curve of pump, the pipe resistance curve of system and the efficiency of pump with relative value.
本实用新型的优点是既能 满足水泵流量-扬程曲线平坦，又能保证泵的效率。
The utility model has the advantage that the utility model not only satisfies the pump flow, namely that the head curve is smooth, but also ensures the efficiency of the pump.
这是一款轻便、自吸式、中等扬程的水泵、配有特大的毛发收集器；
This is portable pump with strong suction and medium head doss, equiped with extraordinary hair collector;
在一定转速下，以流量为变量，也就是如果改变水泵的流量，则水泵的扬程、功率和效率等都随之而变化。
Under a certain speed in order to flow variables that is if the change of the flow pump the pump head power and efficiency of all subsequent changes.
因此，研究水泵流量尤其是低扬程大流量泵站的水泵流量测量是十分有意义的。
The pump discharge of Jiangdu second pump station of the South-North Water Project was made and the uncertainty of the measurement results was analyzed.
指出集中空调冷却水系统为开式系统，一般不适用功率三次方定律，静压头应为冷却塔塔体扬程，并提出了冷却水泵变速时轴功率的计算公式；
Points out that the cubic law of pump power is not valid for the cooling water system of central air conditioning for it is an open system. The static head should be the lift in a cooling tower.
指出集中空调冷却水系统为开式系统，一般不适用功率三次方定律，静压头应为冷却塔塔体扬程，并提出了冷却水泵变速时轴功率的计算公式；
Points out that the cubic law of pump power is not valid for the cooling water system of central air conditioning for it is an open system. The static head should be the lift in a cooling tower.
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