To ensure the impeller head and flow ratings, shaft power should be reduced, to reduce energy consumption, and improve impeller efficiency so as to save energy.
为保证叶轮的扬程和流量，必须降低轴功率，减少能耗，提高叶轮的效率，才能达到节能减耗的效果。
The intermediate demister shapes air flow swirl generated by impeller rotation to get bigger particle and improve the arresting efficiency of the next filter screen.
中间除雾装置将叶轮旋转而成的气流旋涡整形，使得粒子进一步变大，从而提高下一个滤网的捕集效率。
CAD method for improving design quality and efficiency of centrifugal pump impeller is provided.
本文为提高离心泵叶轮的设计质量及效率提供了一个新的方法。
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.
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。
Abstract: the cylindrical milling method of divided area was proposed to improve the quality and efficiency of integrated impeller.
文摘：为提高整体叶轮的加工质量和效率，提出了分段侧铣的方法。
The experiments on different types of impeller are done by changing the clearance of wear-ring to prove that the clearance has no influence on the pump efficiency under various types of impeller.
通过改变叶轮口环间隙的大小对不同叶片型式的低比转速离心泵进行试验，证明口环间隙对低比转速离心泵效率的影响与泵叶轮的叶片的型式无关。
It is discussed to change the cross structure of baffle to improve the power characteristic of the impeller and the mixing efficiency of the agitating system.
探讨通过挡板截面结构的变化，改善叶轮的动力特性，提高搅拌体系的混合效率。
When pumping water, the head, shaft power and efficiency of the pump decrease with the reducing in impeller diameter.
输送水时，叶轮切割后，泵的扬程、轴功率、效率都下降。
The design efficiency of impeller can be largely enhanced by developing a parameterized design software for the impeller.
开发叶轮参数设计软件能大大提高叶轮的设计效率。
From the performance perspective, the lower the efficiency of the impeller, the impeller is only equivalent to an ordinary closed around 70%, a relatively flat head curve.
从性能上讲，该叶轮效率较低，仅相当于普通闭式叶轮的70%左右，扬程曲线比较平坦。
Effect of impeller of different blade profile on the highest pressure point, optimum operating point, shape of pressure curve and efficiency of the fan were analyzed.
分析了不同叶片型线叶轮对风机的最高压力点、最佳工况点、压力曲线形状及效率的影响，同时探讨了风机不同叶片型线的工程实用价值。
Major reasons that cause dynamic balance troubles of induced draft fan impeller are analyzed. Contermeasures to different cases are put forward and have had good efficiency in practice.
分析了引风机叶轮产生不平衡的主要原因，针对不同情况提出了相应的对策。这些对策在实践中取得了良好效果。
But it has smaller volume than displacement compressor at the same mass flow rate; and higher pressure ratio and efficiency than impeller compressor.
且尺寸体积远小于同流量的容积式压缩机，稳定性和压比也比同流量的条件下的叶轮式压气机有所提高。
The development and the application of a high efficiency impeller have been introduced in this paper.
本文介绍了一种适合于大型化的高效轴流式搅拌器的开发及工业应用。
The application of NC technology in impeller machining field can greatly improve the production efficiency and decrease the cost.
将数控技术应用到罗茨鼓风机加工行业，可显著提高加工效率，降低企业成本。
The axial-flow impeller had such characterizes as higher mass transfer efficiency, lower agitation power consumption and better mixing effect.
因轴流式搅拌桨具有传质效率高、搅拌功率低、混合效果好等优点，所以广泛应用于化工生产过程中。
The design of impeller meridional shape influences directly efficiency of centrifugal pumps.
叶轮轴面图设计的好坏直接影响离心泵的效率。
A new method of nc programming for impeller blade is introduced. It was proved that the method was very useful and credible by machining. The method improved the roughness and machining efficiency.
文章提出一种螺旋桨叶型数控加工编程新方法，通过实际加工证明其实用可靠，而且大大提高了表面加工质量和加工效率。
A new method of nc programming for impeller blade is introduced. It was proved that the method was very useful and credible by machining. The method improved the roughness and machining efficiency.
文章提出一种螺旋桨叶型数控加工编程新方法，通过实际加工证明其实用可靠，而且大大提高了表面加工质量和加工效率。
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