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Can be seen from the diagram, claw-type rotor pump chamber is divided into suction chamber and exhaust chamber in two parts.

由图可见，泵腔被爪型转子分隔成吸气腔和排气腔两部分。

The first pump chamber for the suction level, the inspiratory volume larger than the back three to form inter-stage compression.

第一级泵腔为吸气级，其吸气容积比后面三级要大，形成级间压缩。

With the use of RNG turbulent model in the CFD software Fluent, the inner flow of double suction centrifugal pump with semi-spiral suction chamber was calculated.

在CFD软件Fluent中采用考虑了旋转与曲率影响的RNG湍流模型，对具有半螺旋形吸水室的单级双吸离心泵进行了全流道数值模拟计算。

The pumps with different structural parameters are simulated numerically using k-ε model and wall functions. The results showed that the number of nozzles, the nozzle angle and the nozzle-to-throat clearance have a great influence on the performance of jet pump, and the turbulent kinetic energy is greater in suction chamber and in inlet of throat.

采用k-ε湍流模型和壁面函数法对不同参数下的多喷嘴射流泵进行了数值模拟，模拟结果表明，喷嘴数和喷嘴角度及喉嘴距对射流泵工作性能影响较大；在吸入室及喉管入口处湍动能较大。

By using simulation-analysis software CFD,STAR-CD,a three-dimensional simulation analysis was conducted of the semi-volute suction chamber of a gas-oil multiphase pump for flow fields at different void fractions.

利用CFD模拟分析软件———STAR-CD，对油气混输泵半螺旋形吸入室在不同含气率下的流场进行了三维模拟分析。

In order to design the rod string and analyze failure mechanism, the dynamics analysis on rod string of surface driving screw pump must be conducted.

地面驱动螺杆泵抽油杆柱动力学分析是杆柱设计、失效机理分析的关键技术。

In order to design the rod string and analyze failure mechanism,the dynamics analysis on rod string of surface driving screw pump must be conducted.

1· 大庆石油学院机械科学与工程学院黑龙江大庆 163318；2·大庆油田有限责任公司黑龙江大庆 163113

Pumping speed and the length of stroke have greater effect on the loads applied on polished rod, rod string and pump plunger.

4，冲程次数和冲程长度对悬点、杆柱及泵上的载荷影响较大。

This model can be used to calculate and predict the change in torque of rod string loca ted at screw pump and any locations in wellbore according to the change in torqu e of polished rod measured on the surface, vice versa.

利用该模型，可以根据在地面测试的光杆扭矩变化规律计算出井筒中任意部位及螺杆泵处抽油杆扭矩的变化情况，也可根据螺杆泵处抽油杆扭矩变化来预测光杆扭矩的变化。

Partial abrasion of rod string in screw pump well which is surface driven is the main reason that restricts its application, but the prevention method used presently cant solve the problem radically.

地面驱动螺杆泵井抽油杆的偏磨是制约螺杆泵应用的主要原因，目前采用的防治方法不能从根本上解决该问题。

The Porsche Owner: But it's my car!

可，这是我的车呀。

LOX_83}{Oh, another bunch of wackos.

{LOX_83}{呃，又一群怪人。