Key Basic Theoretical Research About A Type Of Opposed Biconinal Cone Screw High-press Seawater Hydraulic Pump

Modern marine equipment technology, which is for the marine environment andthe integration of the current number of general technology, is an internationalcutting-edge technology. Sea water hydraulic technology compatible with the marineenvironment becomes a common technique which adapt to marine development andthe development of modern marine equipment technology. Sea water pump is the corepower of the sea water hydraulic technology and the heart of the sea water hydraulicsystem, therefore the large number of studies are carried out aiming at the waterhydraulic pump. The study on the sea water hydraulic pump is mainly the piston typesea water hydraulic pump at present, the Critical friction pairs of the piston type seawater hydraulic pump are more, and the structure is complex, and high demands Onthe friction and wear, lubrication and seal, corrosion and pollution control technologyare proposed. In addition, whether the axial piston pump or vane pumps or gearpumps, the structure will inevitably lead to some entrap phenomenon，which causesflow pulsation and pressure fluctuation, thus affecting the performance of the pump.Therefore, a new type opposed biconical cone screw high-pressure seawater hydraulicpump is designed in order to meet the requirements of modern marine equipment,particularly the requirements of equipment for deep diving operations, and the relatedtheoretical study and simulation of the novel pump are carried, and following resultswere obtained.The surface equations of the cone screw and bush are established based on thespatial engaging theory and coordinate transformation theory;3d solid models of thecone screw and bush are established by the MATLAB/SIMULINK and Pro/E, and thekinematics analysis of the cone screw and bush is studied and motion law of the conescrew is derived.The flow equation of the opposed biconical cone screw high-pressure seawaterhydraulic pump is estalished, and simulation analysis on the flow area and flowequation of the hydraulic pump is carried out by the MATLAB, the influence law ofthe key design parameters about the hydraulic pump affecting the flow area and flowis investigated.The finite element analysis model of the stator (shell and bush of the opposedbiconical cone screw high-pressure seawater hydraulic pump) is estalished by the ANSYS, and camparative analysis of the stator space model and plane model’sdeformation and stress under the force state is carried out, and whether the planemodel of the stator can replace the space model is studied, the deformation law of thestaror when the bush’s intracavity is under the force is researched.The finite element analysis model of the cone screw and bush about the opposedbiconical cone screw high-pressure seawater hydraulic pump is estalished by theANSYS, and the deformation and stress of the cone screw and bush under the initialinterference is studied by nonlinear finite element analysis, and the deformation lawof the cone screw and bush is explored.