Deformation Analysis of Stator of Opposed Biconinal Cone Screw Seawater Hydraulic Pump

Abstract

Metal cone of the screw rotor and stator rubber bushings are the two main components of the opposed biconinal cone screw hydraulic pump for the seawater. The stator rubber bushing is not only a damageable element, but also the key component deciding the service life and efficiency of the pump. Up to date, none effective method has been found for testing the deformation and enforced state of the stators rubber under the real working condition. For the general conventional screw stator with uniform internal pressure at both ends of the stator bushing enforced and deformed almost the same, as to other case when the cone screw pump stator has rubbers with different cross-sectional size and thickness at its different end, the enforcing and deforming state at different end varies differently. The stator of the opposed biconinal cone screw hydraulic pump is studied in this paper for the case when the stator is uniformly enforced, using finite element analyzing software ANSYS-Workbench , this study concluded the stress, the strain and inner-figure deformation of the screw hydraulic pump stator, the stator rubber and the stator steel thimble. Besides, the characteristics and rules of opposed biconinal cone screw hydraulic pump deformation are summarized as well.

The structure optimisation of hydraulic mechanical screw pump

“…The curvature of a curve is the amount that indicates the degree of curve bending, generally expressed in K. For straight lines, K = 0. For a circular arc, its curvature can be measured by the reciprocal of its radius (Tu et al, 2014).…”

“…And a combination curve of C e and k at C ka (k = 2) + 2, using k = 2 of C ka min as a reference. The size of the overall curvature has a great effect on the sealing performance and service life of the screw-bushing pair (Tu et al, 2014). Therefore, the maximum allowable value of C ka must be limited.…”

Tool profile design for the mold for machining the bush of cone screw seawater hydraulic pump

“…The results of the paper would be helpful as the design guidance for the tools selection, thus laying a foundation for the future study on processing the bush of OBCSHP-SHP. 21…”