Method for designing water-spraying boost pump hydraulic model for efficient and large-power-density ship

Abstract

The invention discloses a method for designing a water-spraying boost pump hydraulic model for an efficient and large-power-density ship. The method comprises the following steps that type selection design of water-spraying boost pump hydraulic parameters is conducted, two-dimensional axial face projective geometry is determined, three-dimensional geometrical shapes of an impeller and guide blades are obtained according to a parameterized ternary reversal design method, a three-dimensional geometrical shape of a shrinkage nozzle is obtained through circumferential rotation, the three-dimensional geometrical shapes of the impeller, the guide blades and the shrinkage nozzle are combined to obtain the water-spraying boost pump hydraulic model. The method has the outstanding advantages that the design period is short, the design quality is high, and the water-spraying boost pump hydraulic model which has the advantages of being high in efficiency, compact and large in power density can be rapidly and reliably designed. The geometrical shapes of the impeller and the blades are obtained according to the parameterized ternary reversal design method, so that on the condition that the water-spraying boost pump hydraulic model is kept compact, the efficiency is improved, cavitation is restrained, and the power density is increased in the researching and developing process of a high-speed ship water-spraying boost pump.

Description

technical field [0001] The invention relates to the technical field of high-speed ship propellers, in particular to a design method for a hydraulic model of a water-jet propulsion pump used to propel a high-speed surface ship, which has the characteristics of high efficiency, excellent anti-cavitation performance, compact diameter and high power density. Background technique [0002] Ship water jet propulsion is a propulsion method different from propeller propulsion. It was born in 1661, a patent applied by the British Thomas Toogood and James Hayes, 19 years earlier than the British Hooke invented the propeller ([1]Roy S M .The Evolution of the Modern Waterjet Marine Propulsion Unit (the evolution of the modern waterjet propulsion unit). Proceedings of the International Conference of Waterjet Propulsion1, RINA, London, 1994.). After a long period of improvement and application, water jet propulsion has been widely used in high-speed and high-performance ships of navies all...

AI Technical Summary

Problems solved by technology

It can be seen that the design and development of the hydraulic model of the high-efficiency, compact, and high-power-density marine waterjet propulsion pump is still very weak

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