Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pumpjetpropulsor hydraulic model with front stators circumferentially and asymmetrically arranged and design method thereof

A technology of symmetrical arrangement and hydraulic model, which is applied in instrumentation, calculation, special data processing applications, etc., to achieve the effect of easy expansion and promotion of popularization and application.

Active Publication Date: 2015-12-02
NAVAL UNIV OF ENG PLA
View PDF3 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above two patent schemes, the blade profile and pitch angle have not changed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pumpjetpropulsor hydraulic model with front stators circumferentially and asymmetrically arranged and design method thereof
  • Pumpjetpropulsor hydraulic model with front stators circumferentially and asymmetrically arranged and design method thereof
  • Pumpjetpropulsor hydraulic model with front stators circumferentially and asymmetrically arranged and design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] pass below Figure 1 to Figure 7 And the way of enumerating some optional embodiments of the present invention, the technical solution of the present invention (including the preferred technical solution) is described in further detail, and any technical feature and any technical solution in this embodiment do not limit the protection scope of the present invention .

[0050] The flow chart of the hydraulic model design method of the pump-jet thruster designed by the present invention is as follows: Figure 7 as shown,

[0051] Step S1, performing type selection and design of the hydraulic parameters of the pump fluid channel according to the design requirements;

[0052] When selecting and designing, according to the theory of ship water jet propulsion, the five parameters of pump jet cascade channel head, flow rate, outlet area, specific speed and suction specific speed parameters are determined according to the rapidity requirements.

[0053] Step S2, determine th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pumpjetpropulsor hydraulic model with front stators circumferentially and asymmetrically arranged and a design method thereof. The pumpjetpropulsor hydraulic model comprises stator blades, a stator hub, impeller blades, an impeller hub and a guide tube. The stator blades are circumferentially and asymmetrically arranged on the stator hub, and blade tips of the stator blades are fixed to the inner wall face of the guide tube. The axis of the stator hub, the axis of the impeller hub and the axis of the guide tube coincide. The impeller blades have the characteristics of large side skewing and tail longitudinal inclination. The pitch angles of the stator blades are changed according to the sine rule on the basis of the pitch angles of reference pumpjet stator blades, and the change quantity of the pitch angles is related to the circumferential angle positions of the stator blades, impeller turning directions and amplitude coefficients. According to the pumpjetpropulsor hydraulic model with front stators circumferentially and asymmetrically arranged and the design method thereof, the amplitude of pumpjet pulsation thrust coefficients can be reduced, pumpjet radiation noise is lowered, and the pulsation thrust coefficients of the pumpjet with the front stators circumferentially and asymmetrically arranged are reduced by 3.4% compared with a reference pumpjet under the same design condition. The technical measure is also suitable for noise optimization design of shaftless driving type integration motor pumpjet hydraulic models.

Description

technical field [0001] The invention relates to the technical field of ship propellers, in particular to a pump-jet propulsor which has the characteristics of low noise and high critical speed and can be used to propel underwater submersibles. Background technique [0002] Pumpjet propulsion (Pumpjet, referred to as pumpjet) has been widely used in low-noise submarine propulsion due to its remarkable characteristics of low radiation noise and high critical speed. Set stator pump spray. At present, the United States, the United Kingdom, France and Russia have all applied pump-jet propulsion technology to nuclear submarine propulsion. The main reason why pump-jet propulsion submarines have not been seen in service in China is the lack of excellent pump-jet hydraulic models. The specific meaning of excellence is: low radiation noise, moderate propulsion efficiency, high critical speed (that is, strong cavitation resistance) (a design method for a hydraulic model of a shaftless...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02T90/00
Inventor 杨琼方王永生
Owner NAVAL UNIV OF ENG PLA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com