Low-pollution combustion chamber and combustion control method thereof

A combustion chamber, low-polluting technology, applied in combustion methods, combustion chambers, continuous combustion chambers, etc., can solve problems such as poor fuel atomization, good premixing and preevaporation, and strong air swirl effect.
CN110657452AActive Publication Date: 2020-01-07AECC COMML AIRCRAFT ENGINE CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
AECC COMML AIRCRAFT ENGINE CO LTD
Publication Date
2020-01-07

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Abstract

The invention relates to a low-pollution combustion chamber and a combustion control method thereof. The low-pollution combustion chamber comprise a combustion chamber head, the combustion chamber head comprises a primary combustion stage and a pre-combustion stage, and the primary combustion stage comprises a primary combustion stage channel and a primary combustion stage swirler arranged in theprimary combustion stage channel. The low-pollution combustion chamber is characterized in that the primary combustion stage further comprises a pre-mold plate arranged in the primary combustion stagechannel, the pre-mold plate is divided into an outer-layer pre-mold plate and an inner-layer pre-mold plate in the radial direction, wherein the spraying point position and the spraying direction offuel oil of the primary combustion stage are arranged to control the primary combustion stage fuel oil to be sprayed into the primary combustion stage channel through a primary combustion stage fuel oil spray hole, the primary combustion stage direct-injection oil mist is partially formed, and the other part of the the primary combustion stage fuel oil is sprayed on the pre-mold plate close to theinner side of the primary combustion stage channel or sprayed on the two layers of pre-mold plates. Through cooperation of the double-layer pre-mold plate and the spraying point position and the spraying direction, and the combustible mixed gas is distributed more uniformly in a flame tube under different working conditions.
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Description

technical field

[0001] The invention relates to an aviation gas turbine combustion chamber and a combustion control method. Background technique

[0002] The main development trend of modern civil aeroengine combustors is low-pollution combustion. Combustion chambers of civil aeroengines must meet increasingly stringent aeroengine pollution emission standards. The currently adopted CAEP6 (Committee on Aviation Environmental Protection) standard has very strict regulations on pollutant emissions, especially for NOx pollution emission requirements; and the latest CAEP8 standard proposes to reduce NOx emissions by 15% on the CAEP6 emission standard, With the rapid development of the aviation industry and the continuous improvement of people's awareness of environmental protection, higher requirements will be put forward for the pollution emissions of gas turbine combustors in the future. In order to meet the increasingly stringent pollution emission standards, advanced low-po...

Claims

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