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A staged combustion chamber with high-temperature jet ignition and self-stabilizing flame

A combustion chamber, self-stabilizing technology, applied in the combustion chamber, continuous combustion chamber, combustion method and other directions, can solve the problem of less application of the grading combustion chamber, achieve good atomization and evaporation effect, improve stable working ability, and widen stable working boundary Effect

Active Publication Date: 2017-12-08
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of staged combustion chamber is less

Method used

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  • A staged combustion chamber with high-temperature jet ignition and self-stabilizing flame
  • A staged combustion chamber with high-temperature jet ignition and self-stabilizing flame
  • A staged combustion chamber with high-temperature jet ignition and self-stabilizing flame

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] like figure 1As shown, the present invention realizes a staged combustor with high-temperature jet ignition and self-stabilizing flame, including main combustion stage flow channel 4, pre-combustion stage flow channel 7, fuel pipeline 6, combustion zone 26, main combustion stage direct injection nozzle 13, The pre-combustion level self-stabilizing flame nozzle 15 and the electric spark igniter 20; the main combustion level direct jet nozzle 13 is composed of the oil collecting chamber 11 and the injection hole 12; the pre-combustion level self-stabilizing flame nozzle 15 is composed of the premixing chamber 16, the The nozzle 17 and the self-stabilizing flame baffle 21 are composed; the air enters the inlet 1 of the combustion chamber and then splits into the main combustion stage flow channel 4 and the pre-combustion stage flow channe...

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Abstract

The invention discloses a staged combustor of a high-temperature jet flow ignition self-stabilization flame. A primary combustion stage direct jet type nozzle is composed of an oil inlet, an oil collecting cavity and a jet hole. A pre-combustion stage self-stabilization flame nozzle comprises an air collecting chamber, a straight slit type jet opening, a self-stabilization flame baffle and other structures. After entering a combustor inlet, air is divided to enter a primary combustion stage runner and a pre-combustion stage pre-mixing channel. Liquid fuel oil is transversely jetted into the primary combustion stage runner by the primary combustion stage direct jet type nozzle to be mixed with air flow. Methane / air pre-mixed gas is obliquely and upwards jetted into a rear step combustion area by the pre-combustion stage self-stabilization flame nozzle, and high-temperature jet flow ignition is carried out on the liquid fuel oil, so that the flame is stabilized. An electric spark igniter is located on the jet track of the methane / air pre-mixed gas, and pre-combustion stage ignition is started. The staged combustor is simple in structure and reliable in work, and the liquid fuel oil can be combusted stably and efficiently under the work condition of a wider range.

Description

technical field [0001] The invention relates to a staged combustion chamber, in particular to a staged combustion chamber with a high-temperature jet ignited self-stabilizing flame. Background technique [0002] The problem of global environmental pollution is becoming more and more severe, and higher requirements are put forward for the design of low-pollution combustors of aero-engines. One of the important solutions is staged combustors. This combustion mode can match the different power requirements of the engine by changing the distribution ratio of fuel and air, so that it can burn at the most suitable fuel-air ratio, thereby reducing pollutant emissions to the greatest extent. [0003] At present, the staged combustion chamber and the main combustion stage nozzle mainly use air atomizing nozzles, which use swirling air to atomize fuel. However, from the perspective of the development trend of low-emission combustion technology, direct horizontal injection of fuel jets...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/36
CPCF23R3/36
Inventor 林宇震程忆晗张弛赵永胜
Owner BEIHANG UNIV
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