叶轮

This paper presents the dynamic controlling method of stream lines on axial plane projection of the hydraulic model and square grid of the blade drawing of the pump impeller. The ideas and methods of the application of Bezier curve in impeller CAD are analyzed in detail.

提出采用Bezier曲线解决水泵叶轮水力模型轴面投影流线及叶片绘型的方格网流线的动态调控方法，详尽地分析了在叶轮CAD中应用Bezier曲线的具体思路与方法。

To overcome the inconvenience of traditional centrifugal pump impeller design, the quartic Bezier curve is used to design the meridional plane and blade profile.

针对传统离心泵叶轮设计步骤繁琐的不足，提出了采用4次Bezier曲线来设计叶轮的轴面流线及叶片型线的方法。

By adopting surface molding to obtain solving region and then carrying out numerical calculation and analysis of flow field in centrifugal pump, accurate remodification information is obtained and optimized impellers which have excellent fluid dynamics capacity is schemed out.

采用曲面造型得到计算区域，通过对离心泵叶轮内部流场的数值计算与分析，为离心泵优化设计提供准确的修改意见，设计出水力性能优异的叶轮。

A numerical control method of 4-axis side milling to generate the ruled surface such as the vane wheel was presented.

最后，通过数控实验验证了该方法的可行性，并结合了径流式叶轮机械轴—径型叶轮抛物面叶片的成型设计计算方法，使设计计算和加工计算更方便，加工效率更高。

Research on the Basic Kinematics-Geometry Theory and Tool Positioning Strategy for 5-axis NC Machining;2. The paper introduces the construction features of undevelopable ruled surface integral impeller and two 5-Axis numerical control mill machining methods of vane shape which are "line contact" and "point contact".

文章介绍了不可展直纹面型整体叶轮的结构特点及五坐标数控铣削加工叶片型面"线接触"和"点接触"两种方式，分析了采用侧铣加工产生误差的原因，对加工中的不同工步及精加工薄叶片的特殊处理进行了分析，并提出了相应的解决方案，对整体叶轮的数控加工有一定的现实意义和实用价值。

Pump rotor consists of first and second stage impeller, shaft sleeve, lock bolt, spacer sleeve, sleeve coupling , shaft-sleeve nut, pump coupling and main shaft.

泵的转子部件由首级叶轮、次级叶轮、轴套、锁紧螺栓、间隔套、挡套、套筒联轴器、轴套螺母、泵联轴器、主轴等组成。

In this thesis, study is on the basis of N-S equation and standard turbulent flow mould. Numerical simulation is given to turbulent flow inside impeller of LB50-160 type centrifugal pump.

本文基于N-S方程和标准k-ε紊流模型，对LB50-160型离心泵设计流量下叶轮内流场三维紊流进行了数值计算，获得了叶轮内流场的速度、压力分布，捕捉到了一些重要的流动现象。

Guangzhou Pump , Grundfos NSBasic, is a single-stage impeller and the two-stage impeller of the small end of the stomach pump , it has a cast iron pump , composite materials or cast ...

广州易泵贸易有限公司，格兰富NSBasic，是单级叶轮与双级叶轮的小型端胃泵，它具有的铸铁泵，复合材料或铸。。。

The backside of impeller:due to special design of backside impeller,the pressure on the stuffing box is minimum.

叶轮背部：由于叶轮背面的特殊设计，将填料箱上的残余压力减到最小。

Since the infant CPB needn't high flow rate, the 12mm pitch wheel with higher anti-resistance ability is more suitable in this study;(3) The axial flow pump with 12mm pitch wheel was used in animal experiment.

考虑幼婴儿体外循环中对流量的要求不高，因此抗阻能力较高的螺距12mm的叶轮更适合本设计的要求；（3）在动物实验中选用12mm螺距的叶轮安装在轴流泵中。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。