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Venturi apparatus for strengthening liquid-membrane crushing effect

A Venturi tube and strengthening liquid technology, which is applied in the direction of combustion method, combustion chamber, combustion equipment, etc., can solve the problem of the influence of the fuel atomization of the Venturi tube structure, which is rarely studied.

Inactive Publication Date: 2015-06-03
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on fuel atomization in gas turbine combustors mainly focuses on the research on compound injection methods, but there are few studies on the influence of venturi structure on fuel atomization.
It is rare to see articles or patents about opening holes or adding bosses on the inner wall surface at the outlet of the venturi tube

Method used

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  • Venturi apparatus for strengthening liquid-membrane crushing effect
  • Venturi apparatus for strengthening liquid-membrane crushing effect
  • Venturi apparatus for strengthening liquid-membrane crushing effect

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Embodiment Construction

[0024] The present invention will be further described now in conjunction with accompanying drawing:

[0025] combine figure 1 , figure 2 , image 3 The present invention provides a new venturi tube for enhancing atomization effect, a swirler composed of the venturi tube and a gas turbine combustor formed by the swirler. figure 1 3D view of the two-stage cyclone, figure 2 , image 3 Indicates the approximate location of the venturi opening area. Figure 4 , Figure 5 Indicates two arrangements, fork row and straight row. Image 6 Shown is a Venturi tube in boss mode. When the high-speed liquid film flows through the opening or boss area of ​​the venturi tube, the complete liquid film will be disturbed. Reasonable arrangement of the hole or boss position can promote efficient atomization of droplets and make the droplet size more uniform , to improve the atomization effect.

[0026] The rear part of the traditional venturi tube is smooth. After the fuel forms a liqui...

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Abstract

The invention provides a Venturi apparatus for strengthening liquid-membrane crushing effect. Multiple rows of bosses or holes for turbulent flow are arranged in the area between a Venturi throat and a Venturi outlet and feature in disturbing flowing of the a liquid membrane and strengthening atomization effect. When the liquid membrane flows through the area at a high speed, the complete liquid membrane is disturbed, and liquid drops are atomized effectively and efficiently by reasonably arranging the holes or the bosses in position according to different dual-stage swirlers. The Venturi apparatus has the advantages that the atomization effect can be strengthened by slight improvement on the basis of a traditional Venturi, and practical value is achieved.

Description

technical field [0001] The invention belongs to the field of gas turbine engines, and relates to a venturi tube for high-efficiency fuel atomization, a flame cylinder and a gas turbine combustion chamber composed of the venturi tube. Background technique [0002] The development of modern aero-engines requires the combustion chamber to have the characteristics of high temperature rise and low emission. It is well known that liquid fuel burns in air, first evaporates into fuel vapor, and then burns. So how fast you burn depends somewhat on how fast your fuel evaporates. In order to increase the combustion rate of fuel, it is necessary to increase the evaporation rate of fuel. And the very important way to increase the fuel evaporation rate is to use spray technology to turn the fuel into very fine mist droplets to increase its evaporation area. High temperature rise and low emission have higher requirements for fuel atomization. [0003] Regarding the atomization of fuel,...

Claims

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Application Information

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IPC IPC(8): F23R3/38
Inventor 张群杨省喆孙顺利闫东博徐昕歆
Owner NORTHWESTERN POLYTECHNICAL UNIV
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