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A three-stage stratified partially premixed combustor for preheating and pre-evaporating main fuel oil

A technology of main combustion stage and combustion chamber, which is applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc., to achieve the effects of improving combustion stability, good atomization quality, and improving blending quality

Active Publication Date: 2018-11-06
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to improve the oil-gas mixing quality at the head of the combustion chamber and further reduce the pollutant discharge of the combustion chamber

Method used

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  • A three-stage stratified partially premixed combustor for preheating and pre-evaporating main fuel oil
  • A three-stage stratified partially premixed combustor for preheating and pre-evaporating main fuel oil
  • A three-stage stratified partially premixed combustor for preheating and pre-evaporating main fuel oil

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0044] It should be noted that implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "backward", "left", "right", "top", "bottom", etc., are only for reference The orientation of the graph. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0045] Such as figure 1 As shown, the three-stage layered partly premixed combustion chamber for preheating and pre-evaporating the main combustion grade fuel oil of the present invention includes a diffuser 1, a casing 2 outside the combustion chamber, a casing 3 inside the combustion chamber, an o...

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Abstract

The invention relates to a three-stage layering portion premixing combustion chamber by using a main combustion stage fuel oil pre-heating pre-evaporating technology. A head oil gas mixer includes a pre-combustion stage layer, an inner main combustion stage layer and an outer main combustion stage layer; and a corresponding head combustion zone is divided into a pre-combustion zone, an inner main combustion zone and an outer main combustion zone. Fuel oil injected into a main combustion stage inner cyclone air channel via a main combustion stage inner fuel oil injection hole absorbs heat and rapidly evaporates on an outer surface of a pre-combustion stage convergence expansion segment, and enters the inner main combustion zone to be mixed and combusted in the gaseous form. Accordingly, pollutant emission of a staged combustion chamber can be reduced further by using the main combustion stage fuel oil pre-heating pre-evaporating technology and the head three-stage layering zoning combustion technology.

Description

technical field [0001] The invention relates to the technical field of aero-engine combustors, in particular to a partial premixed combustor which utilizes a three-stage stratified combustion technology for preheating and pre-evaporating main combustion grade fuel to reduce pollutant emissions. Background technique [0002] At present, the main technical way to develop low-pollution combustors of aero-engines is to enhance the mixing degree of air and fuel in the combustion chamber. The fuel-lean premixed or partially premixed combustion mode completes the combustion; the lean-fuel multi-point injection combustor increases the number of fuel nozzles at the head of the combustion chamber and increases the contact area between fuel and air, thereby improving the quality of fuel and air mixing and reducing NOx emissions. [0003] Fuel and air staging is the primary way to improve the quality of the fuel-air mixture in the combustion chamber. TAPS combustor is the most represe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/14F23R3/30F23R3/34F23R3/38
CPCF23R3/14F23R3/30F23R3/34F23R3/38
Inventor 杨金虎刘存喜刘富强穆勇徐纲
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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