泵杆

Seepex with HQ in Germany, develops, manufactures and globally markets progressive cavity pumps, macerators and control systems.

西派克泵业有限公司总部位于德国波特鲁普，是一家专业从事单螺杆泵、破碎切割机和控制系统研发、制造和全球销售的公司。

The rules of the single progressive cavity pump pressure modeling and transfering were studied based on the theory analysis.

通过理论分析，得出了单螺杆泵压力的产生和传递规律。

The most important are as follows: Detection of type: valve stem seal leakage test and test; water valve tightness test; switch tightness test; the take-off safety valve Test; Detection Object: valve, the cut-off valve , safety valve, throttle valve, check valve, swing check valve, ball valve, regulating valve and other hollow pump body, valve body and housing, etc.; way valve connection: flange connection, threaded connection, welding connection; detection medium.

最重要的有以下几种：检测类型：阀门密封性试验及阀杆泄漏性试验；水中阀体密封性试验；开关密封性试验；安全阀的起跳值试验；检测对象：闸阀、截止阀、安全阀、节流阀、止回阀、摆动式逆止阀、球阀、调节阀和其他中空的泵体、阀体和壳体等；阀门联接方式：法兰联接、螺纹连接、焊接联接；检测介质。

A new method of predicting and diagnosing for sucker rod pumping system in deviated wells［J］.

斜井有杆泵抽油工况预测和诊断的新方法［J］。？

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。

The oscillatory mechanism of the concrete delivery pump is a slider- crank mechanism composed of piston, cylinder block and the oscillatory rod that is linked with the S tube together.

混凝土泵换向系统的动态特性是由和S管连为一体的摆杆、活塞、缸体所组成的曲柄滑块机构和液压传动系统的动态特性共同决定的。

Therefore, this method is not appropriate as a single-screw adjusting parameters means.

因此，这种方法不宜作为单螺杆泵调整参数的手段。

By right of these characteristics, the single-screw pump is especially suitable for the following working conditions

由于有这些特性，单螺杆泵特别适合下列工况的工作

By right of these characteristics, the single-screw pump is especially suitable for the following working conditions

由于有这些个特性，单螺杆泵特别合适下列工况的工作

Single-screw conveyor suitable sensitivity and vulnerability to the centrifugal force and other items damaged items

单螺杆泵适合输送敏性物品和易受离心力等破坏的物品

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。