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Annular metal foam straight hole nozzle of high-speed jetting device

A technology of high-speed jet flow and metal foam, which is applied in the direction of injection devices and liquid injection devices, and can solve the problems of improving the jet performance of jet devices with metal foam

Inactive Publication Date: 2014-12-24
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the metal foam is not used to improve the jet performance of the jet device in the existing jet technology, the present invention further provides an annular metal foam straight-hole nozzle of the high-speed jet device

Method used

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  • Annular metal foam straight hole nozzle of high-speed jetting device
  • Annular metal foam straight hole nozzle of high-speed jetting device

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specific Embodiment approach

[0021] Specific implementation: combination figure 1 with figure 2 To illustrate, the annular metal foam straight-hole nozzle of a high-speed jet device of this embodiment includes a fixed shaft 1, a mixing chamber 2, a jet tube 4, and a nozzle sleeve 6, wherein a nozzle sleeve is fixed outside the mixing chamber 2 and the jet tube 4 6. The fixed shaft 1 is located in the mixing cavity 2. The mixing cavity 2 is enclosed by the surrounding mixing cavity wall 3, and the nozzle sleeve 6 is provided with jet holes 8; the annular metal foam straight hole nozzle of the high-speed jet device also includes The metal foam layer 5, the outer diameter of the metal foam layer 5 is the same as the inner diameter of the jet tube 4, the metal foam layer 5 is installed on the inner wall of the jet tube 4, the metal foam layer 5 is provided with a hollow area 7, the mixing cavity 2 and the jet tube 4 The connecting section is in the shape of a truncated cone with a tapered cross-sectional area...

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Abstract

The invention provides an annular metal foam straight hole nozzle of a high-speed jetting device, and belongs to the field of high-speed impact of a fluid technology. The problem that there is no metal foam used for improving the jetting performance of the jetting device in an existing jetting technology is solved. A nozzle cage is fixedly arranged on the outer side of a mixing cavity and a jet pipe of an annular metal foam straight hole nozzle of the high-speed jetting device, a fixing shaft is placed in the mixing cavity, the mixing cavity is defined by a surrounding mixing cavity wall, and a jetting hole is formed in the nozzle cage. The outer edge diameter of the metal foam layer is equal to the inner diameter of the jet pipe, the metal foam layer is mounted on the inner wall of the jet pipe, a hollow area is arranged on the metal foam layer, and the connecting section of the mixing cavity and the jet pipe is in a boss shape with the cross section area gradually contracting. The fixing shaft, the mixing cavity, the jet pipe, the metal foam layer, the hollow area, the nozzle cage and the jetting hole formed in the nozzle cage are all coaxially arranged. The annular metal foam straight hole nozzle of the high-speed jetting device widens the jetting speed range of the jetting device, and effectively improves the jetting capacity of the nozzle.

Description

Technical field [0001] The invention relates to a metal foam nozzle, in particular to a ring-shaped metal foam straight hole nozzle of a high-speed jet device, belonging to the field of high-speed impingement jet flow of jet flow technology. Background technique [0002] When the fluid is flowing, its dynamic pressure energy can generate kinetic energy. If the fluid flows at high speed, there is a low pressure area around the stream, so the low pressure area around the stream will sweep the material near the low pressure area and move forward together along the flow direction. This is the basic principle of the impinging jet, and the jet tube is formed The basic device of the stream. Therefore, jet has a large number of applications in actual industry and production processes, such as jet pumps, high-pressure water guns, jet aircraft, jet holes in oil and gas resources, turbine blade cooling, surface engineering, electronic device cooling, material heat treatment, fire protectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B7/04
CPCB05B7/04
Inventor 徐会金赵长颖徐治国
Owner SHANGHAI JIAO TONG UNIV
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