A method to determine low noise fan volute structure is provided.

提供了一种确定低噪声离心通风机蜗壳结构的方法。

Pump Volute-shaped shell made many, it is also called the volute.

泵壳多做成蜗壳形，故又称蜗壳。

Pump volute - shaped shell made many, it is also called the volute.

泵壳多做成蜗壳形，故又称蜗壳。

It is found that vane diffuser restrains the influence of the volute on the 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。

The complex internal flow has made volute to be one of the component costing most loss.

蜗壳内部的流动现象十分复杂，是损失最大的元件之一。

According to the experimental data, detailed analysis is made about the flow in the volute.

根据实验结果，从各个角度对该蜗壳内流体流动参数进行了分析。

And evaluation extreme value method is used to obtain the volute width at the minimum noise.

并用求极值方法得出噪声最小的蜗壳宽度。

Centrifugal and mixed flow pumps pressurized water chamber is a common spiral-shaped, called the volute.

离心泵和混流泵常见的压水室是螺旋形的，称为涡壳。

Using software PRO-E to build the model of the impeller, diffuser with blade, entering air elbow, volute.

用PRO - E软件对进气弯管，带分流叶片的叶轮及有叶片扩压器进行了实体建模。

Technology of step tongue volute is introduced and applied to a centrifugal fan for discharging lampblack.

介绍了阶梯蜗舌技术，并将其应用于一种排油烟的离心风机。

The impeller and volute is the primary hydrodynamic parts, which influence the no clogging of sewage pump.

叶轮和压水室是影响污水泵无堵塞性的主要水力部件。

The embedding part includes volute socket ring, tail water taper pipe, tail water ell, pit liner and so on.

埋入部分包括蜗壳座环、尾水锥管、尾水肘管、机坑里衬等。

Mixture was separated at the volute tongue export stripping along the short tube into the separation chamber.

混合物在蜗壳出口被隔舌剥离，沿短管进入分离室。

The discharge pipe flange is bolted to the support plate to prevent piping strain transmission to the pump volute.

排水管法兰通过螺栓连接到支撑板上，以防止管道张力传递到泵蜗壳上。

The volute suction shall contain a replaceable 400 Series stainless steel wear ring to match the impeller wear ring.

蜗形吸入室应该包含一个能够与叶轮抗磨环匹配的可替换400系列不锈钢抗磨环。

Abstract: The effect of different volute openness on aerodynamic characteristic of a centrifugal fan is investigated.

摘要 ：研究不同蜗壳开度对离心风机气动性能的影响。

The distribution of velocity and solid particles and the information of axial vortex in the impeller and volute are discovered.

得出了渣浆泵叶轮与蜗壳内的速度分布、固相浓度分布以及漩涡结构等流场信息。

Volute spring series win outstanding new products special awards in 2002 China General Machine Components Industry Association.

涡卷弹簧系列荣获2002年中国机械通用零部件行业优秀新产品特等奖；

A calculation method of the off-design of variable cross section in pulse turbine with vaneless volute is introduced in the paper.

介绍了变截面无叶蜗壳脉冲涡轮的变工况计算方法。

The optimization design method, which considers the impeller and volute casing as a whole and the effects of viscosity, is proposed.

提出将叶轮、蜗壳作一体的并考虑粘度的油泵水力优化方法。

Two kinds of methods for verifying the precision of LDV when used in measuring velocity fields of the centrifugal volute are introduced.

介绍了利用激光多普勒测速仪（LDV）测量离心泵蜗壳流道内部速度场时的速度与流量两种校核方法。

The unit shall be field convertible to a portable pump by means of removal of the guide bracket from the pump volute, without modification.

这种泵设备应该能够在现场转换成轻便泵，不需要进行改型，只要通过拆卸泵涡壳上的导轨支架就可以做到。

The results clearly document that the curves of vertical and main velocity in the middle area of the volute are parabolic at all running speeds.

结果表明，蜗室中间的主流速度在不同转速下均呈抛物线型分布；

Concrete volute chamber is a kind of spatial structure of complex shape, so calculation and analysis of concrete volute chamber is very difficult.

混凝土蜗壳是形状复杂的空间结构，对蜗壳进行计算分析是比较困难的。

The asymmetry of overall flow field caused by the interaction between impeller and volute is proved by different flow atlas of the specific section.

通过特定截面的不同流动图谱，证实了蜗壳、叶轮相互作用引起的整机流场的不对称性。

The rotary motion of a profiled impeller in combination with a shaped pump housing or volute applies centrifugal force to discharge fluids from the pump.

成型叶轮的旋转运动以及成型的泵壳或蜗壳产生离心力从泵中排出流体。