The Research & Design Of Four-location Oil Field Screw Pump Of Rubber Stator Injection-vulcanization Unit And Three-dimensional Dynamic Simulation

Oil field screw pump is widely used in the oil field now. And the equipmentand method of its key part—rubber stator can not meet the demand of high quality,high effiency, low consume and low cost. For the disadvantage and shortage, thefour-location oil field screw pump rubber stator injection-vulcanization unit is newlydesigned. The effiency and production quality are greatly improved, with thetraditional two steps method and force-feeding method replaced by the one stepinjection technology.1. The four-location moving device of rubber stator injection-vulcanization isfirst designed. The traditional unit has only one location, so it can not make the mostuse of its ability for the long leave-unused period. The developed four-locationmoving device is easy and of good utilities; it can let one injection machine injectseveral molds, so it can increase the production efficiency and reduce the productioncost greatly.2. The helical meshed feeding supercharging device is designed, and thenecessary higher production and high injection pressure are obtained. The helicalmoving compression device is designed, this device directly act in the direction ofthe axis of the screw. So this increase the centre aligning capability, eliminate theeccentric moment, increase the operational reliability of the equipment, and lengthenthe operating life of the whole machine. 3. The electric injection device is newly designed. Plastication and injection isdone with one step. Compared to traditional hydraulic injection method andhydraulic force-feeding method, the new design is simple and compact in structure;it can save energy, maintained easily and made cheaply; it can produce incivilization for it improves the working environment.4. The advanced digital sensing technology is used. It can check the headpressure, compression force and axial force. Then the information quantifying ofrubber and digital operation of compression device are realized, making theequipment work safely; and automation and stability of the production quality canbe realized easily.5. The three-dimensional model of the injection-vulcanization unit is done withCAD, and are used as the physical model to CAE. The three-dimensional FEAanalyses of screw, stationary board and nut of compression screw pair are done withCAE technology. The FEA analysis of stationary board with rib is contrasted to thatwithout rib.6. The integral vulcanization and die system is designed, changing the traditionalconfiguration and structure, for the traditional one's mould is separated to thevulcanization equipment.7. The injection device is dynamically simulated with three-dimensionalsoftware 3dmax. The link relations between parts are indicated withthree-dimensional explosion effect. This can prove that the design accords tooperational demand, installation and disassembly dimension.The one step injection technology is used in the four-location oil field screwpump rubber stator injection-vulcanization unit. It solves the injection problem ofthe large volume product. The compactability is good because of the high injectionpressure. So the operating life of the rubber stator is greatly lengthened. The unit canbe used in rubber production of the stator, but also its working principle can beapplied in the production of rubber product; it has wide future of application and itwill produce obvious social and economic benefit.