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V -type cone flame holder for rotor engine

A technology of rotary engine and flame stabilizer, which is applied in the direction of combustion method, combustion chamber, combustion equipment, etc., to achieve the effect of strong fire stability, simple structure and easy flame

Inactive Publication Date: 2008-12-31
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Ramgen still uses gaseous fuel with a higher flame propagation rate. If liquid fuel is used, such as aviation kerosene, it will have a greater impact on its combustion performance.

Method used

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  • V -type cone flame holder for rotor engine
  • V -type cone flame holder for rotor engine
  • V -type cone flame holder for rotor engine

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Experimental program
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Effect test

Embodiment Construction

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

[0027] Install V-cone flame holders on rotary engines such as figure 1 As shown; on the rotary engine, the casing 12 inside the combustion chamber rotates together with the rotor, and the rotation angular velocity is ω, while the casing 11 outside the combustion chamber can rotate with the rotor due to the different structural design of the rotary engine, or it can be stationary The main flow 1 of the combustion chamber flows into the combustion chamber at a certain relative speed, and the relative Mach number of the air flow in the current typical ram rotor engine is above 0.2; when flowing through the V-shaped cone 13 in the V-shaped cone flame stabilizer 7, The flow air flow 2 on the outer wall of the V-shaped cone forms a recirculation zone due to viscosity at the trailing edge of the V-shaped cone 13. This low-speed recirculation zone is...

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Abstract

The invention discloses a V-shaped cone flame holder used for the rotor engine. The V-shaped cone flame holder is characterized in that the V-shaped cone flame holder comprises a supporting frame and a V-shaped cone, wherein, the V-shaped cone is connected and fixed with a V-shaped cone connecting seat on the supporting frame through a thread way and is positioned at the high position of a combustion passage; the supporting frame adopts a hollow structure, the feeding fuel enters the oil fuel passage in the middle of the supporting frame through the lower end opening of the supporting frame and is atomized to from nozzle oil mist through a centrifugal nozzle installed at the rear end of the supporting frame, and the nozzle oil mist is ignited to form the high temperature flame of the pre-combustion stage flame holder; when the whole device is rotated along the rotor engine, the high temperature flame of the pre-combustion stage flame holder is caused to float from the high position to the low position area of the internal radius from the high position by utilizing the characteristic of the high centrifugal force field on the high-speed rotor, the main combustion stage in the low position area is ignited, thus to enhance the combustion efficiency and guarantee the stability of the combustion. The V-shaped cone flame holder can provide stable high position fire source for the combustion system of the motor engine and guarantee the whole combustion system to be provided with wide and stable operating range and high efficient combustion.

Description

technical field [0001] The invention relates to a flame stabilizing device for an engine, in particular to a V-shaped cone flame stabilizing device for a pre-combustion level flame stabilizing device for a rotary engine. Background technique [0002] Foreign countries have developed a new concept engine-ramjet rotor engine integrating ramjet engine technology and gas turbine engine technology. This kind of engine can be divided into two categories: one type of ram rotor engine uses ram rotor to compress air, followed by combustion chamber and turbine for combustion and work; the other type is to realize gas compression, combustion and expansion work on one rotor . Ramgen Corporation of the United States has conducted research and operational tests on both types of ram rotor engines, and its main purpose is to apply ram rotor engines to provide power for industrial gas turbines, and both use gaseous fuels. [0003] Especially the second type of ramjet rotor engine, which is...

Claims

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Application Information

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IPC IPC(8): F23R3/20F23R3/22
Inventor 安帅郭新华张弛林宇震
Owner BEIHANG UNIV
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