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在油田生产中,将油气混合输送到总站,再进行集中处理,是一种多快好省的方案。实现这种方案的关键问题之一,在于制造出一种混输泵。它应具有经济、可靠、耐用、制造容易、管理方便等各方面优点。由于油井情况差别很大,它还需要有很广的适用范围,对油气中不同含量的砂、蜡、水也要能够适应。我国在一九六四年以前,有的单位已试制过单螺杆泵。它的主要零件是一个螺旋形的转子,在一个橡胶衬里的螺旋定子内孔中做平面运动。这种泵最突出的特点,是它可以输送各种复杂的液体工质。但是,用它来输送气体则发生了明显的问题。由于,泵在工作中,出口压力要比进口压力高,当泵在进口处形成了一个密封腔,并装满进口状态下的气体向出口方向运动,在这过程中气体压力没有变化,当密封腔在出口端打开时,便与高压的气体相通,
In oilfield production, the oil and gas are mixed and delivered to the terminus, and then centralized treatment is a solution that is quicker and more economical. One of the key issues in implementing this solution is to create a hybrid pump. It should be economical, reliable, durable, easy to manufacture, easy to manage and other advantages. Due to the great difference in oil well conditions, it also needs a wide range of applications, and different levels of oil, sand, wax and water should be able to adapt. Before 1964 in our country, some units have tried making single-screw pumps. Its main part is a helical rotor, which performs a planar motion in the bore of a rubber-lined, helical stator. The most prominent feature of this pump is that it can transport a variety of complex liquid refrigerant. However, significant problems have occurred with gas delivery. Because, in the work of the pump, the outlet pressure is higher than the inlet pressure. When the pump forms a sealed chamber at the inlet and full of gas in the inlet state moves toward the outlet, there is no change in the gas pressure in the process. When the seal When the chamber is opened at the outlet end, it communicates with the high-pressure gas,