Design And Calculation On Single Screw Booster Pump For Waterflooding On The Ground

It is designed for single screw pumps which are being developed fast with its increasing application in the field of oil extraction industry, to be used for booster waterflooding .With the advantages of simple structure, uniform flow, stable pressure, long life time parts and low cost, single screw pumps provide us a new idea to meet the requirement of high pressure, increase the efficiency for pump system and reduce the energy expenditure and cost of waterflooding.There are two single screw pumps symmetrically, which are designed to counterbalance the axial direction force without the thrust bearings. And the flow is two times of either.The water inflows from the middle with a lower pressure, and outflows to both sides with a higher pressure. So it is necessary to mount the kind of universal couplings, which can sustain the pressure. With the ball oriented in the centre, the lobe type couplings is believed to be the right choice.It is the double helix single screw pump, which has various advantages compared with the single helix single screw pump. The curtate hypocycloid is chosen to be the original flank profile of stator, and the conjugate tooth profiles to be the flank profile of the rotor. For the purpose to increase the working life firstly and develop the function secondly, some key parameters are analyzed and calculated.Furthermore, the flexishaft and the seal have also be designed, and so is the reducer.