泵杆

It's necessary to investigate the theory of the three screw pump.

所以对三螺杆泵的理论研究是非常必要的。

The thesis studies the necessity and rationality of using the technology of variable frequency drive to resolve the bottleneck in SPCP s driving system, and describes the hardware developing process of sample of the variable frequency drive .

本文主要论述了，在潜油螺杆泵采油系统中应用变频驱动技术来解决这一问题的必要性和合理性，并详述了试验样机的硬件开发过程。

Sand production at oil wells on conventional plunger pump plunger often sand, sand buried rod, tube and plunger pumps sanding situation, etc., so that premature pump failure.

在出砂油井上，常规柱塞抽油泵时常出现砂卡柱塞、砂埋抽油杆、砂磨泵筒和柱塞等现象，使抽油泵过早掉效。

An automatic dipping production line machine equipment mainly comprises a liquid pool, a thermostated container, a curing oven, a heating cabinet, an air heating cabinet, a high pressure air heater., an air cooler, a column, a motor, a gearbox, a sprocket, a guiding wheel a supporting wheel, dual chains, a chain hanging scroll, a dedicated cradle, a vibratory pump, a dead lever, a wind plate and so on.

一种自动浸渍流水线设备，主要由液体池、恒温箱、固化箱、加热箱、空气加热箱、高压热风机、冷风机、立柱、电动机、变速机、链轮、导向轮、托轮、双链条、链条挂轴、专用挂篮、振动泵、固定杆、挡风板等构成，通电后，电动机驱动变速机使链条通过导向轮的定位导向，使待浸渍防潮液的物品的浸液、除余液、固化等工序自动连续完成，挡风板控制着热量的循环利用，具备优质高效、环保节能，是物品防潮浸渍的理想自动化流水线设备。

Through this high pressure line, mud is pumped in to the standpipe and drillpipe.

通过这根高压管线，泥浆被泵入立管和钻忏杆。

Screw while having dry absorption capacity, but it must be to prevent the stem turn, so as not to scratch the surface of the work.

螺杆泵虽然具有干吸能力，但是必须防止干转，以免擦伤工作表面。

Screw pump suction stop valve should be fully open the case of start, to prevent overload or suck air.

螺杆泵应在吸排停止阀全开的情况下起动，以防过载或吸空。

Washing, cutting ring and eyes require board (disc valve pump valve is the plate with the tie bar and wear-resistant film from top to bottom) the gap is smaller, there is a large amount of water to be strictly sealed, so to clean the ball forward after the infiltration of water .

水洗，要求切割环和眼睛板(碟阀泵则是板阀与系杆和上下耐磨片)的间隙要小，需有大量的水，严格密封，做到清洗球后的水不向前渗透。

According to testing requirements of a twin-screw pump,a real-time monitor ing system is introduced.

根据双螺杆泵的性能测试要求，介绍了可进行实时监控的自动检测系统，分析了其硬件构成与软件设计的原理。

Screw pump is a new type of liquid delivery of machinery, with a simple structure, safe and reliable use of easy maintenance, a continuous uniform fluid, pressure, stability and so on.

螺杆泵是一种新型的输送液体的机械，具有结构简单、工作安全可靠，使用维修方便、出液连续均匀、压力稳定等优点。

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％。