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Internal and external cavity combined type trapped vortex combustion chamber

A combustion chamber and concave cavity technology is applied in the field of trapped vortex combustion chambers with combined configuration of inner and outer concave cavities, which can solve the problems of low combustion efficiency and pollutant emission efficiency, limited combustion reaction area and area, unfavorable grading and zonal combustion, etc. Improve combustion efficiency, increase low-speed mixing space and combustion area, and inhibit nitrogen oxides and other pollutants

Pending Publication Date: 2020-12-22
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing vortex combustors have an inward concave cavity structure, and the combustion reaction area and area are relatively limited, which is not conducive to the regulation of hierarchical and partitioned combustion, and the combustion efficiency and pollutant emission efficiency are low

Method used

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  • Internal and external cavity combined type trapped vortex combustion chamber
  • Internal and external cavity combined type trapped vortex combustion chamber
  • Internal and external cavity combined type trapped vortex combustion chamber

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Embodiment Construction

[0021] The following are preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered as the present invention. protection scope of the invention.

[0022] A trapped vortex combustor with a combination of inner and outer concave cavities, such as Figure 1 to Figure 3 As shown, the trapped vortex combustion chamber includes a diffuser 1, a combustion chamber housing 2, an oil delivery pipe 3, an igniter 4, and a flame tube 5 with a combination of inner and outer concave cavities; the combustion chamber housing 2 and the diffuser 1 connect. The oil delivery pipe 3 includes a main oil pipe 301, an annular oil pipe 302 and a thin oil pipe 303. Both the main oil pipe 301 and the thin oil pipe 303 are bendable metal pipes, which are convenient for actual assem...

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Abstract

The invention provides an internal and external cavity combined type trapped vortex combustion chamber. The trapped vortex combustion chamber comprises a diffuser, a combustion chamber shell, oil conveying pipes, an igniter and a cavity combined type flame tube. The combustion chamber shell is connected with the diffuser. The oil conveying pipes comprise a main oil pipe, an annular oil pipe and athin oil pipe. The oil conveying pipes are of a tubular structure. The main oil pipe is a bendable metal pipe. The number of the oil conveying pipes is two to six, and the oil conveying pipes are uniformly distributed and installed on the annular oil pipe in the circumferential direction. According to the internal and external cavity combined type trapped vortex combustion chamber, combustion chamber external cavities are additionally formed, the combustion reaction region and area can be increased, regulation and control over classified and partitioned combustion are better facilitated, and the combustion efficiency and pollutant emission can be improved.

Description

technical field [0001] The invention relates to the technical field of aeroengines and gas turbine combustion chambers, in particular to a trapped vortex combustion chamber with a combination of inner and outer concave cavities. Background technique [0002] The development of modern aero-engines and gas turbines has put forward higher requirements for the performance of the combustor, and one of the key issues is that the combustor should have a wider flame stability region and lower pollutant emission performance. To this end, countries around the world have successively proposed and developed a variety of high-efficiency, low-pollution combustion technologies, such as lean-oil premixed pre-evaporation technology, lean-oil direct injection technology, double-ring premixed swirl combustion technology, rich-quenching-lean technology and trapped vortex combustion technology. Among them, the dwelling vortex combustor is a new type of combustor proposed in the 1990s. Different...

Claims

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Application Information

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IPC IPC(8): F23R3/58
CPCF23R3/58
Inventor 孙海俊田乐胡晓安吴锦武徐义华向鑫
Owner NANCHANG HANGKONG UNIVERSITY
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