The Analysis And Research Of Radial Plunger Pump Lubrication And Seal Structure

Oilfield water injection is one of the common means of developing oil fields, it is to improve the high yield of oil recovery and oil field has played a positive role. Most of the oil injection pump is a centrifugal pump, but when the oil field water pressure is high, the flow requirement is not too great when using the centrifugal pump will cause energy consumption to increase. The radial piston pumps rely on the advantages of high pressure, high efficiency, to get a better application. The radial piston pumps also there are aspects of the sealing and lubrication affect the efficiency of the pump, reliability, longevity.This paper first discusses the scope of application of the commonly used types of pumps, the performance characteristics of several types of pumps to make the contrast, the radial piston pump in oil field water, then the structure of the domestic and international typical positive displacement pumpanalysis, by analyzing their strengths and weaknesses as well as oil field water requirements needed by the pump to determine the overall layout of design essentials radial piston pumps, radial piston pumps piston slipper valveThe key components design and analysis.Status sealing and lubrication conditions directly affect the life of the radial piston pump, the paper first introduces the common types of seals and seal materials in a sealed structure, using the oil-water separator three sealing structure, the sealing ismodular seal, the seal is filled by a polytetrafluoroethylene (PTFE) the combination of material ladder rubber O-ring seals and a GB circle is formed, the sealing means has a good seal, safe and reliable, long life,The anti-extrusion superior performance. As a result of the structure, plunger, valves and other parts of the oil-water separator water lubrication, the friction of the most serious slipper is used by introducing high pressure oil to the oil lubrication lubrication methods slipper is also used hydrostatic bearing structure, this structure is better able to alleviate the serious problem slipper friction and Wear, and the critical friction pair materials selected. Subsequent Slipper hydrostatic bearing performance, including the thickness of the film, bearing stiffness, bearing leakage flow and bearing power loss, and through the combination of computer simulation, select the optimal radius ratio coefficient and pressure drop coefficient, so that slipper hydrostatic bearing performance.Finally, the two main technical parameters of the radial piston pump, pressure and flow, and drive motor selection, calculation and analysis, to determine the selection of the model Y315L1-8Y series three-phase asynchronousmotor. The last brief description of the hydraulic system of the high pressure oil supply system is a way of recycling oil, and gives a hydraulic schematic diagram, combined with the hydraulic-related knowledge, select the CBF-E10, gear pumps.