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Two-stage integral swirler and flame tube head structure

A flame tube head and swirl device technology is applied in the field of gas turbine engine combustion chamber, which can solve the problems of not meeting the requirements of the concentration field in the main combustion area, poor atomization performance of the flame tube head structure, etc., and achieve good ignition and flameout performance. , Improve the airflow structure and fuel concentration distribution, the effect of circumferential uniformity

Active Publication Date: 2021-07-20
AECC HUNAN AVIATION POWERPLANT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The two-stage integral vortex device provided by the present invention solves the technical problems that the existing flame tube head structure has poor atomization performance and cannot meet the requirements of the high-temperature rise combustion chamber for the concentration field of the main combustion zone

Method used

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  • Two-stage integral swirler and flame tube head structure
  • Two-stage integral swirler and flame tube head structure
  • Two-stage integral swirler and flame tube head structure

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Embodiment Construction

[0030] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.

[0031] figure 1 It is a schematic diagram of a cross-sectional front view of a fuel atomization device in the prior art; figure 2 It is a schematic diagram of the three-dimensional structure of the two-stage integral vortex device of the preferred embodiment of the present invention; image 3 It is a cross-sectional view of a two-stage integral vortex device in a preferred embodiment of the present invention;

[0032] Figure 4 yes image 3 Schematic diagram of the cross-sectional structure in the direction of A-A; Figure 5 yes image 3 Schematic diagram of the sectional structure in the middle B-B direction; Image 6 It is a structural schematic diagram of the head structure of the flame cylinder in a preferred embodiment of the present invention; Fig...

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Abstract

The invention discloses a two-stage integral swirler and a flame tube head structure. The two-stage integral swirler is arranged into an inner cavity between a fuel oil nozzle and a flame tube head ring, the inner cavity is used for shearing and atomizing fuel oil sprayed by the fuel oil nozzle and conveying the fuel oil into the flame tube head ring, the two-stage integral swirler is cylindrical and is provided with an inner channel distributed along the axis in the middle of the two-stage integral swirler, the two-stage integral swirler is provided with a beveled hole and a curved flow channel which respectively communicate with the inner channel, the beveled hole is arranged close to the input end of the two-stage integral swirler, the curved flow channel is arranged on one side, far away from the input end, of the beveled hole, air flow outside the beveled hole is introduced into the inner channel through the beveled hole, first rotating air flow is formed in the inner channel, and air flow outside the curved-surface flow channel is introduced into the inner channel through the curved-surface flow channel, and second rotating air flow is formed in the inner channel. The two-stage integral swirler can meet the requirement of a high-temperature-rise combustion chamber for the concentration field of a main combustion area.

Description

technical field [0001] The invention relates to the technical field of gas turbine engine combustors, in particular to a two-stage integral swirler. In addition, the invention also relates to a flame tube head structure. Background technique [0002] The fuel atomization device is an important part of the combustion chamber of a gas turbine engine. Each turbine power machine has at least one nozzle to provide fuel, and forms an oil mist field combustion under the action of the fuel atomization device. The fuel atomization device has good working performance The damage directly affects the ignition and extinguishment performance, combustion performance and pollution emission performance of the combustion chamber. [0003] figure 1 It is a fuel atomization device currently being used. The fuel atomization device is composed of a nozzle and a stabilizer. The stabilizer and the flame tube are fixed by welding. The stabilizer is a bowl-shaped blunt body structure. The air passi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28F23R3/30F23R3/12F23R3/42
CPCF23R3/286F23R3/30F23R3/12F23R3/425
Inventor 王帅杨浩沈荻刘逸博李炜彭畅新王梅娟林志勇尹美芝
Owner AECC HUNAN AVIATION POWERPLANT RES INST
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