海水泵使用两个月即发生叶轮叶片断裂事故。
The impeller vane of sea water pump was fractured just after two months.
本文介绍了混流泵叶轮叶片一种准三元设计法。
This paper introduces a quasi 3-d design method for the blade of the impeller of the mixed-flow pump.
某公司立空压机一级叶轮叶片在使用过程中断裂。
Primary impeller blades of vertical air compressor were broken down in the course of use.
提出了直纹面叶轮叶片非等距轮廓线的生成方法。
It introduces a new kind of generating method of non-equidistant curves.
对叶轮叶片振动特性进行研究，模态分析是一种十分有效的方法。
Modal analysis is a very effective method for the study of vibration characteristic of impeller blade.
这种泵的叶轮叶片可以自动调节来适应转速、流体粘度和不同压力。
This pump impeller blades can be adjusted automatically to adapt to speed, fluid viscosity and pressure.
为提高整体叶轮叶片数控加工的效率和质量，提出了一种分片侧铣加工法。
To improve the efficiency and quality for numerical control of machining of integral impellers, a new method, i. e. flank milling on divided pieces, was put forward.
研究分析了不同的切削速度及进给量对叶轮叶片加工的表面粗糙度的影响。
The influence of different cutting speed and feed rate on the roughness of vane's finished surface was investigated and analyzed.
作为水力模型库的应用验证，进行了叶轮叶片的相似换算设计，获得了令人满意的设计结果。
To testify the application of the hydraulic model library, doing the design of the similar transformation of the impeller blade, and attaining the satisfied result.
对基于逆向工程的叶轮叶片曲面的数控加工进行了系统的实验研究，证明了所提方法的可行性。
Experimental research on NC machining of impeller blade's surface based on reverse engineering is carried out systematically, which proves the feasibility of the method given above.
以变矩器叶轮叶片芯模具为实例 ，就逆工程技术在模具快速设计与制造方面的应用做了初步的探讨。
Taking the impeller vane core mould of a moment changer for example, its application to rapid design and manufacturing of moulds is studied.
轴向旋涡流动是离心叶轮叶片之间一种特殊的相对流动，其流动规律是离心叶轮正反问题研究的重要基础。
Relative eddy is a special relative flow within centrifugal blade passage, which is of prime importance in flow study of pumps.
每年大修时，叶轮叶片有汽蚀破坏麻点，每次大修都要焊补和打磨叶片，而且维护人员劳动强度大、工作环境差。
Annual overhaul, the impeller blades have cavitation pitting damage, each must overhaul welding and grinding blades, but also labor-intensive maintenance personnel and poor working environment.
将流程泵叶轮叶片和压水室的隔舌看作旋涡发生体，在不同运行工况下在叶片后缘以及隔舌两侧串联发生的卡门涡街的发射频率是不同的。
The emission frequency of the Karman vortex street occurred in series from the blades and tongue is varing with the running condition.
前盖板上的副叶片可以减少叶轮进口的旋涡损失和颗粒对密封环的磨损。
Former deputy leaves on the cover can reduce the imports of the vortex impeller and particle loss of the wear and tear on the seal ring.
该型叶轮的泵兼具有容积泵和离心泵的作用，悬浮性颗粒在叶片中流过时，不撞击泵内任何部位，故无损性好。
The type of the pump impeller and pump and centrifugal pump with a volume effect of particles suspended in mid-stream leaf out of date, do not hit any part of the pump, it is good non-destructive.
叶轮：严重汽蚀(特别是主叶片)、过度腐蚀、磨损、破损时，要求更换叶轮。
Impeller: Sure to change impeller if it has serious cavitations (main vanes in particular), over corrosion, wear and tear and breakage.
该计算结果为建立少叶片半开式叶轮纸浆泵的设计方法提供了理论依据。
This calculation result provides design basis for the establishment of stock pump with semi-open and fewer blades impeller.
发现了叶片扩压器对遏制蜗壳对叶轮内流场的影响有明显的作用。
It is found that vane diffuser restrains the influence of the volute on the impeller.
且在长期运行中情况比较稳定，采用该型式叶轮的泵轴向力较小，且可以在前后盖板上设置副叶片。
And the situation in the long-term stable operation, use the type of impeller shaft to the edge of the smaller, and can be set up before and after the Vice-leaf cover.
采用离心压气机计算机辅助集成设计系统，设计了两个不同子午形面和叶片角的离心压气机叶轮。
Two centrifugal compressor impellers with different meridional shape and blade Angle were designed using computer-aided integrated design systems.
研究结果可为优化叶轮与叶片扩压器的匹配提供有益参考。
The perdicted results also can provide useful information for the matching between the impeller and vane diffuser in design.
文中对具有分流叶片的叶轮势流场计算作出了数值处理。
The numerical treatments are made for the calculation of the potential flow field in a impeller with splitter blades.
讨论了改变叶片数目，增加叶片厚度，调整分流叶片周向位置以及增加间隙高度等对离心叶轮流量、压比和效率等总体性能的影响。
The influence of blade number, blade thickness, location of splitter blades and tip clearance on mass flow, pressure ratio and efficiency is showed.
得到了叶片数对离心油泵叶轮切割定律的影响规律性。
The influence of the number of blades on the affinity law of impeller trim for the centrifugal oil pump is obtained.
所以，预报颤振发生几率，避免叶片颤振的研究工作在叶轮机械气动弹性力学学科中占有越来越突出的地位。
Therefore, in the research of turbomachinery aeroelastics, it is more and more important to predict blade flutter and to avoid blade flutter.
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。
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.
在相同叶轮出口速度下，叶片扩压器比无叶扩压器中气流速度下降迅速，叶轮出口处平均流场趋于均匀。
Under the same impeller outlet speed, the flow speed of blade diffuser is faster than the vaneless one. The average flow field at impeller outlet trends to uniform.
在相同叶轮出口速度下，叶片扩压器比无叶扩压器中气流速度下降迅速，叶轮出口处平均流场趋于均匀。
Under the same impeller outlet speed, the flow speed of blade diffuser is faster than the vaneless one. The average flow field at impeller outlet trends to uniform.
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