基于气液双相燃料的火焰稳定器和燃烧室

By using a flame stabilizer with gas-liquid dual-phase fuel, an aerodynamic barrier is formed by the gas and liquid phase fuels, which solves the performance impact problem caused by high-pressure air extraction in the prior art and achieves high-efficiency combustion and low-loss combustion chamber performance.

CN118669822BActive Publication Date: 2026-07-17TSINGHUA UNIVERSITY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIVERSITY
Filing Date
2024-06-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing jet flame stabilizers require drawing high-pressure air from behind the engine compressor to form an aerodynamic barrier, which reduces the amount of air entering the combustion chamber for heating and turbine work, affecting the overall performance of the engine in afterburner mode.

Method used

The flame stabilizer uses gas-liquid dual-phase fuel. Gas and liquid phase fuels are sprayed out through gas jet nozzles and liquid jet nozzles. The liquid phase fuel is atomized under the kinetic energy of the high-speed gas phase fuel and forms an arched aerodynamic barrier, which stabilizes the flame and entrains high-temperature combustion gas, avoiding the introduction of high-pressure air to form a barrier.

Benefits of technology

It improves combustion efficiency, reduces flow losses in the combustion chamber, ensures the performance of the engine under afterburner conditions, and eliminates the need for large-area blunt body structures, thus reducing mechanical structure and weight.

✦ Generated by Eureka AI based on patent content.

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Abstract

本申请涉及一种基于气液双相燃料的火焰稳定器和燃烧室。火焰稳定器包括位于高速来流的流动路径上的射流机构,且射流机构的喷射方向与高速来流呈一定角度;射流机构包括气相射流喷嘴以及液相射流喷嘴;气相射流喷嘴用于喷出气相燃料以形成气相射流;液相射流喷嘴用于喷出液相燃料以形成液相射流;通过气相射流与液相射流形成气动屏障,无需从压气机后引取高压空气来形成气动屏障,保证进入燃烧室加热和涡轮做功的空气量,进而保证发动机整机加力状态的性能。同时,液相燃料经过了多次雾化,使其与气相燃料和高速来流的掺混效果较好,使得燃烧更为充分,降低燃烧室流动损失,提高燃烧效率。
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