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.
实例计算表明，采用该方法可以较好地拟合水泵效率特性曲线。
It is proved with the example that the new method works well for water pump efficiency characteristic curve fitting.
同时进行了进口端面密封设计、推力轴承设计以及对水泵效率影响的讨论。
Other design methods were also presented, such as the face seal at inlet, axial thrust bearing, and its effect to pump efficiency was also discussed.
系统的节能效果还受变频器效率、电机效率、水泵效率及负荷分布的影响；
The energy-saving effects are influenced by the efficiency of transducer, motor, pump and distribution of load;
结果水泵有效功率和输入功率均随着电机频率的下降而不断降低，同时水泵效率也随着频率下降而降低。
The results show that available power and power input of water pump continuously decline with motor frequency reducing, and pump efficiency also decrease at the same time.
进水流道水力设计优化可有效地改善进水流道出口流态，确保水泵有良好的进水条件，大幅度提高水泵装置效率。
The optimal hydraulic design can effectively improve the outlet flow pattern of suction box to ensure better flow conditions for pump and raise the efficiency of pumping system substantially.
大容量水泵，水冷机油冷却器和双圆环型散热器风扇确保最佳发动机的冷却效率。
Large-capacity water pump, liquid-cooled oil cooler and twin ring-type radiator fans ensure optimal engine cooling efficiency.
莫尔制冰机专用水泵应用在制冰机领域上，有更好的性能、更高的效率、更低的能耗、更安静的运转、更长的使用寿命。
Morrill ice machine pumps application in ice machine special field, have better performance and higher efficiency, lower energy consumption, the more quiet operation, longer service life.
某些水泵使用1000小时左右即出现严重的空蚀，船舶螺旋桨在使用一段时间后也因空蚀而效率大大降低。
Some pumps used for 1000 hours, the ship propeller in the use of time is also greatly reduced because of the efficiency of air piping.
国外先进的水泵机组，效率可超过90%。
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.
水泵吸水池设计的合理与否，会直接影响到泵站的运行效率和安全。
The design of the pump sump has a directly effect on the running efficiency and security performance of the pump system.
提高小型提水风力机的效率，减少系统的维护量，增加风力机安装位置与水泵安装位置之间的自由度是推广利用风能提水的一项重要工作。
It is an important task to increase efficiency of systems and installation freedom between wind turbine and water pump and reduce maintenance for wind pumping systems.
泵站进水池中的旋涡直接影响进水池流态及水泵运行效率。
Vortices in the vicinity of pump intakes influence the pump performance with loss of efficiency and vibration.
提高供水系统的效率并保证水泵电机的安全运行。
And efficiency of water supplying system will be improved and safety operation of electric pump can be guaranteed.
锅炉给水泵是电站的一个重要辅机，其运行的安全可靠性比它的效率更重要。
The feed-water pump for boilers is an important auxilliary equipment in power plant, it's safety and reliability in operation are more important than it's efficiency.
解决了利用水泵难以获取到稳定高压的难题，并提高了检测效率。
The difficult problem of a steady high-pressure can't arrive through the water pressure pump have been solved ingeniously, and the efficiency of the testing also have been enhanced...
如何根据东线工程泵站的特点，优化进出水流道的水力设计、提高水泵装置的效率，是东线工程泵站建设中一项极其重要的工作。
How to optimum design and to increase the efficiency of the pump system based on the characteristics is an extremely important work for the Project.
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.
利用最优化原理与方法结合变频调速技术实现注水泵站效率优化控制，以满足油田生产节能降耗的需要。
The optimization theory and method combined with variable frequency speed regulation technology is applied in this paper to realize efficiency optimization in water injection pumping stations.
试验研究表明，改进后的前池水流流态明显改善，水泵运行效率得到提高，并有效减少了前池的泥沙淤积。
The test shows the flow in the modified forebay is remarkably improved, the efficiency of the pump raised and the sludge deposit reduced.
供水泵站设计中采取节能措施，是提高城市供水生产企业生产效率，节能降耗的主要途径之一。
In the design of water supply pump station, energy-saving measures are the main way to raise the efficiency of city water supply enterprises.
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.
注水系统效率由电机平均运行效率、注水泵平均运行效率和管网运行平均效率组成。
Waterflood system efficiencies are made up with the average operation efficiency of motors, water injection pumps and pipe networks.
取水泵站装置效率低、能耗大的主要原因是水泵选型和组合运行调度不合理。
Unreasonable selection of pump type and improper combination operation are the main causes of low efficiency and energy consuming of intake pumping station equipment.
井下水泵房排水系统担负着整个矿井积水排除的任务，其安全可靠性直接影响矿井生产的效率和安全。
Pumping collected water from mining area is the job of drainage system in pumping house under mine, which has closely relations to mining security and efficiency.
井下水泵房排水系统担负着整个矿井积水排除的任务，其安全可靠性直接影响矿井生产的效率和安全。
Pumping collected water from mining area is the job of drainage system in pumping house under mine, which has closely relations to mining security and efficiency.
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