Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Structure for inhibiting water flow cavitation of outlet structure

A technology for releasing water structures and water flow. It is applied in construction, water conservancy engineering, marine engineering and other directions, and can solve problems such as failure to prevent the formation of cavitation.

Active Publication Date: 2013-09-11
POWERCHINA ZHONGNAN ENG
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water flow aeration can effectively block the development and collapse of cavitation, but it cannot prevent the formation of cavitation, which is a passive defense measure

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
  • Structure for inhibiting water flow cavitation of outlet structure
  • Structure for inhibiting water flow cavitation of outlet structure
  • Structure for inhibiting water flow cavitation of outlet structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] see Figure 1 to Figure 3 The structure for suppressing cavitation of water flow in a drainage structure includes a communication pipe 1 embedded in the drainage structure 5; the inlet end 3 of the communication pipe 1 is externally connected to a pressurizing device 4; the connection pipe 1 The outlet end 2 communicates with the flow wall 6 of the drainage structure 5, and the outlet end 2 of the connecting pipe 1 is a multi-orifice or a single orifice of a shower head type.

[0018] The discharge structure 5 is provided with a discharge gate 8 , and the pressurization device 4 is linked with the opening and closing system of the discharge gate 8 .

[0019] The pressurizing equipment 4 is an air compressor, and the displacement of the air compressor is 6m 3 / min, working pressure 0.8MPa.

[0020] The connecting pipe 1 is a steel pipe with a diameter of 200 mm.

[0021] The area of ​​the water flow low pressure zone 7 is 10m 2 , open 5 orifices with a diameter of 20...

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 relates to a structure for inhibiting water flow cavitation of an outlet structure. The structure comprises communicating pipes buried in the outlet structure, an inlet end of each communicating pipe is externally connected with a pressurizing device, an outlet end of each communicating pipe is communicated with an overflowing wall surface of the outlet structure, and the outlet end of each communicating pipe is a shower head type porous orifice or single-pore orifice. Air or water is injected to a low-pressure area of the overflowing wall surface by the aid of the pressurizing devices, energy compensation is performed on water flow in the low-pressure area, internal pressure of the water flow is increased, flowing state of vortex water flow is improved and separated, cavitation number of the water flow is increased, formation of cavitation bubbles is inhibited, and cavitation of water flow is prevented from the source. The structure is applicable to corrosion prevention of high-velocity water flow outlet structures of hydraulic and hydro-power engineering.

Description

technical field [0001] The invention relates to a structure for suppressing cavitation of water flow in a drainage structure, in particular to a structure for suppressing cavitation of water flow by means of energy compensation. The invention is suitable for anti-corrosion of high-speed water discharge structures in water conservancy and hydropower projects. Background technique [0002] The phenomenon of water cavitation was first discovered in 1895 in the thrust study of ship propellers. Water cavitation is divided into three stages, namely: the formation, development and collapse of cavitation. [0003] The high-speed flowing water body is blocked by the wall surface, and the energy of the boundary layer is greatly lost. The water particles are forced to flow to the outside of the wall surface, forming a boundary layer separation vortex, forming a low-pressure area of ​​water flow. When the pressure is lower than the vaporization pressure of water, it dissolves in the wat...

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): E02B8/06
Inventor 戴晓兵
Owner POWERCHINA ZHONGNAN ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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