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

Combined type method for designing variable-camber low-specific-speed centrifugal pump impeller

A centrifugal pump impeller, low specific speed technology, applied in the direction of non-variable-capacity pumps, pumps, pump components, etc., can solve the problem of head reduction, impeller turbulence and vortex, pump unit vibration intensity and operation instability increase and other problems, to achieve the effect of increasing head, improving hydraulic performance and conveying capacity, and increasing head and operable flow range.

Active Publication Date: 2014-08-20
JIANGSU YAMEI PUMP IND GRP
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the flow rate of conventional low specific speed centrifugal pumps increases, the head will gradually decrease, and the internal flow field of the impeller will easily produce more obvious turbulent flow and vortex, and the vibration intensity and operation instability of the pump unit will increase, which cannot continue Stable operation and water supply at the flow point

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
  • Combined type method for designing variable-camber low-specific-speed centrifugal pump impeller
  • Combined type method for designing variable-camber low-specific-speed centrifugal pump impeller
  • Combined type method for designing variable-camber low-specific-speed centrifugal pump impeller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] figure 1 and figure 2 Together determine the impeller shape and geometry for this embodiment. This is a compound variable curvature low specific speed centrifugal pump impeller with a closed structure. The radial size and structure of the impeller front cover (4) and impeller rear cover (6) are straight, and the axial section through the flow channel is relatively small. Wide enough to allow solid particles of a certain size to pass through. The splitter blades (8) and the forward curved blades (9) are distributed on the outer edge of the impeller, both adopt the straight blade type, and the splitter blades (8) are evenly distributed between the backward curved blades (3), and the blade inclination angles are α 1 and alpha 2 . The present invention determines impeller outer diameter (1) D and impeller inlet diameter (2) D through the following relations j , the width of the impeller outlet (5)b, the inner diameter of the forward curved blade (7)D f , splitter bla...

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 provides a combined type method for designing a variable-camber low-specific-speed centrifugal pump impeller. The impeller is suitable for the fields such as pipe pressurization, high-lift water supply and municipal engineering. The design formula of main physical dimension parameters, including the impeller outer diameter D, the impeller inlet diameter Dj, the impeller outlet width b, the front bending blade inner diameter Db, the splitter blade slant angle alpha1, the front bending blade slant angle alpha2 and the blade wrapped angle phi, of the impeller is given. By means of the combined type method for designing the variable-camber low-specific-speed centrifugal pump impeller, flowing inside the impeller can be improved, and the lift and the stability of the impeller on large-flow working condition points can be improved.

Description

technical field [0001] The patent of the present invention relates to a design method of a composite centrifugal pump impeller, specifically, a design method of a composite variable curvature low specific speed closed centrifugal pump impeller suitable for pressurization and water supply and other occasions. Background technique [0002] As a type of centrifugal pump with a wide range of uses, low specific speed centrifugal pumps are widely used in pipeline pressurization, high-lift water supply, lawn spraying, cleaning and solar energy systems, etc., with small flow, high lift and easy installation. features. When the flow rate of a conventional low specific speed centrifugal pump increases, the head will gradually decrease, and the internal flow field of the impeller will easily produce more obvious turbulent flow and vortex, and the vibration intensity and operation instability of the pump unit will increase, which cannot continue Stable operation and water supply under ...

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
IPC IPC(8): F04D29/22
Inventor 欧鸣雄邱白晶付强
Owner JIANGSU YAMEI PUMP IND GRP
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