Abstract
The rubber bush of the stator is not only the damageable parts of the opposed biconinal cone screw high pressure seawater hydraulic pump, and the combining status between the stator and rotor has a significant impact on the performance of the new type pump, so the related research on above problems are carried out. The contact finite element equation of the shell and bush is established and the deformation and stress of the stator's space and plane's model under the force state are compared and analyzed with the finite element method, and discuss whether the plane model could replace the space model on the finite element analysis of the deformation and stress about the stator. The analysis shows that the deformation and stress of the stator's plane model and space model have much difference, so the plane model can't replace the space model on the research of the finite element analysis. http://dx.doi.org/10.5755/j01.mech.17.5.733
Highlights
Modern marine equipment technology, which is for the marine environment and the integration of the current number of general technology, is an international cutting-edge technology
Under the above load and constraints conditions, what can be seen from the Fig. 5 is that: the maximum deformation of the X direction is at the contact department of the first conjugate surface and the second conjugate surface about the bush’s intracavity, and the value is 0.961mm; the maximum deformation of the Y direction is at first conjugate surface of the bush’s intracavity, and the value is 1.084 mm; the displacement vector of the shell is zero, and the maximum displacement vector of the bush is at the middle of the first conjugate surface about the bush’s intracavity, and the value is 1.105 mm
Trough the finite element analysis of the plane model and space model with the stator about the new pump, the following conclusions can be drawn: 1. At the space model of the stator, the maximum deformation of the X direction is at the second conjugate surface of the bush’s intracavity; the maximum deformation of the Y direction is at the first conjugate surface of the bush’s intracavity, but near the second conjugate surface; the large deformation damage is caused at the contact position of the first conjugate surface and the second conjugate surface
Summary
Modern marine equipment technology, which is for the marine environment and the integration of the current number of general technology, is an international cutting-edge technology. A new type opposed biconical cone screw high-pressure seawater hydraulic pump is designed in order to meet the requirements of modern marine equipment, the requirements of equipment for deep diving operations. Some initial interference value is designed between the cone screw and the bush in order to achieve a good seal, and reduce the internal leakage of the pump, and improve the volumetric efficiency of the pump; the friction side number of the new pump is much less than the number of the existing piston, and the new pump don’t have any assignment device, so the structure of the novel pump is simple and the service life is long. The new type pump is mainly constituted by the a pair of cone screws (rotor), flexible wear-resistant bush (stator) which is equal thickness, pump body, left and right end cover, bearing, universal joint coupling, transmission shaft and seal, etc. The cone screw do fixed-point movement, by the motor, transmission shaft through the universal joint coupling to drive to meet the requirements of fixed-point movement; the bush is fixed
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