水泵扬程

然后以能耗最小为目标函数，在包括可调性在内的若干约束条件下，得到各支路管径和水泵扬程。

Then , considering the least energy consume as a target function , we can gained all branch pip-diameter and pump head under some restrict conditions .

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

矿用水泵扬程的测量方法研究

Study of Method about How to Measure Mineral Pump Lift

小区供热锅炉房循环水泵扬程的计算

Calculation of Delivery Lift of Circulation Pump in Regional Heating Boiler Plant

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 .

泵站参数输入及水泵扬程计算模块确定泵站设计流量、特征扬程；

In detail , design capacity and character head of pumping station are determined in the module of calculation of parameters .

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 .

采用数值计算的方法，对带分流叶片低比速离心泵内流场进行详细分析，从内部流动规律角度探讨了分流叶片提高水泵扬程和效率的机理。

The head and efficiency of axial flow pump are calculated and compared with experimental data . Numerical simulation was adopted to analysis the inner flow condition of centrifugal impeller with splitter blades , which explored the principle of improving pump lift head and efficiency .

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。

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 .

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 .

电排站水泵运行扬程提高，改变了现有电排站设计运行工况，通过对水文典型年资料的分析，对电排站工程规模进行复核，提出了管理运行调度的合理模式。

By analysis the typical hydrologic year , the paper recheck the pump engineering scale , and put forward a reasonable pattern on pump management .

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 .

并应用连续方程和水泵势扬程方程式，求出了间隙泄漏量是其间隙几何参数及泵扬程的函数关系式。并将该装置应用于工程实践。

Applying continuous equation and pump 's potential head equation to conclude that the leakage flow rate was a function of gap geometric parameter and pump head , the device was applied to engineering practice .

由计算出来的结果可以看出，环状管网能够改善湿式自动喷水灭火系统的水力条件，减小系统的设计流量与水头损失，降低消防水泵的扬程。

According to the calculation results , circular pipe network could improve the hydraulic conditions , reduce the designed flux and water head loss , and debase the lift of fire protection water pump of wet automatic sprinkler systems .

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 . They always connected water with their attitude .

提高离心水泵效率、扬程和流量的一种方法

A way to improving the efficiency lift flow of an eccentric pump

中央空调水系统并联冷冻水泵流量和扬程的选取及分析

Selection and the analysis of the flow and lifts of parallel frozen water pump for the central air condition water system

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 .

只有调整相关的性能参数，即水泵的出水扬程，才能保证水泵的工况点处在高效工作区，电机的输出功率与负载处于合理的匹配范围内。

In order to ensure the working point being in high efficiency working area , the only way is to adjust correlative performance parameters .

高精度压差测量仪具有很高的测量精度和线性度，通过所测压差可以准确地计算出水泵的实际扬程。

The high-precision pressure test meter has the very high measuring accuracy and the linearity . Through measured the differential pressure may calculate the mineral water pump accurately actual lifting .

摘要水泵流量、扬程和功率分别与其转速的一次方、二次方和三次方成正比。

A water pump ′ s flow rate , lifting capacity and power are respectively in direct proportion to the first , second and third power of its rotating speed .

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 .

其次，着重探讨了分布式测控系统的构成和水泵流量、扬程、轴功率、转速以及电机定子绕组电阻的测试原理与测量方法；

Secondly , emphasize researching composing of the distributed measurement and control system , the theory of testing and methods of measurement about the water-pump flux , pressure , axial power , rotate speed , and the electromotor coil resistance .

分析了某公司新水系统存在的问题，提出了通过自动跟踪压力变化，自动调整电机转速，来改变水泵的运行扬程，使水泵保持在经济扬程上运行的改造方案。

This thesis analysed the existing problems in the new water supplying system of a company , put forward the transfomation plan which changed operational lift pumps to keep water pumps operating in economic lift through tracking pressure changes automatically .

重点介绍了大气冷凝器的上水泵使用低扬程、大流量泵的工艺，以及正常开车时，在不开启喷射泵的情况下，通过旁路管可以排出不凝气等技改措施。

The process is emphatically introduced about using the low-lift and large-flow pumps as the water charging pumps of the barometric condensers , as well as the technic improvement measures by discharging incondensable gas through by-pass pipes during normal running without operating ejector vacuum pumps .

如水泵再与实际扬程合理匹配，其效率可达到22.29%。

If the pump is selected more reasonably to fit the practical lift of the pumping station , the efficiency can ever be raised to 22.29 % .

分析结果表明，二次泵系统具有较好的水力稳定性，水泵调速采用远端定压差控制时，水泵扬程与负荷分布有关。

The results show that the hydrodynamic stability of a secondary pumping system is preferable and that the head required for variable pump control is relative to the load distribution when applying far-end constant pressure difference control .

这说明，造成水泵实测流量大于设计流量的主要原因是所选水泵的扬程过大。

This shows that , the main reason , measured flow greater than design flow is that the head of the selected pump is too large .

提出基于可靠度的水泵配套电机功率备用系数的计算方法，计算本工程三种水泵扬程和两种清污条件的源头泵站和非源头泵站电机功率备用系数。

A method for calculating the reasonable spare coefficient of motor capacity based on reliability theory is proposed .