Reverse flow combustor allowing wider range of stable running

A backflow combustor and stable working technology, which is applied in the direction of combustors, continuous combustors, combustion methods, etc., can solve problems such as the deterioration of the temperature distribution at the outlet of the combustor, and the narrow stable working range, so as to broaden the stable working range and widen the fuel Effect of flow rate range and widening working range

Active Publication Date: 2015-06-03
BEIHANG UNIV
View PDF12 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional single oil circuit design narrows the stable working range of the combustion chamber, and the design without mixing holes may deteriorate the outlet temperature distribution quality of the combustion chamber

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reverse flow combustor allowing wider range of stable running
  • Reverse flow combustor allowing wider range of stable running
  • Reverse flow combustor allowing wider range of stable running

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] figure 1 It is a detailed structural diagram of a recirculation combustion chamber that can expand the stable working range involved in the present invention. Combustion chamber casing 1 includes flame tube 3 to form a single-ring cavity structure. The flame tube 3 is composed of a head end wall 4 , a head atomizing device 5 , a flame tube outer wall 6 , a flame tube inner wall 7 and a large elbow wall 8 . The air enters into the annular chamber of the combustion chamber through the diffuser 2 and then enters the interior of the flame tube 3 through the head atomizing device 5 , the main combustion hole 9 , the mixing hole 10 and the cooling structure 11 . The fuel is atomized through the head atomizing device 5, fully mixed with the swirling air, and then enters the inside of the flame tube 3 for combustion, and then passes through t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a reverse flow combustor allowing a wider range of stable running. The reverse flow combustor comprises a diffuser, a combustor casing, a flame cylinder head end wall, a flame cylinder outer wall, a flame cylinder inner wall, a large elbow and a head atomizer. Air enters the combustor through the diffuser; part of the air enters a flame cylinder through the head atomizer; another part of the air enters through a main combustion hole of the flame cylinder and a mixing hole thereof, the remaining enters from a cooling structure. The air and fuel fully mix and combust in the flame cylinder. After passing by two 180-degree turns, the air leaves the combustor. The head atomizer performs atomizing in a mixed mode of pressure centrifugal atomizing and pre-swirling prior to pre-film air atomizing; the fuel is fed through a main oil circuit and an auxiliary oil circuit; the main combustion hole arranged in the outer wall of the flame cylinder and the mixing hole thereof are provided with a hood, jets are avoided flowing to the head, and inner and outer jets are ensured being symmetrical. The range of stable running of the reverse flow combustor can be expanded, and uniformity of fuel gas temperature of an outlet is guaranteed.

Description

technical field [0001] The invention relates to the technical field of an aero-engine recirculation combustion chamber, in particular to a recirculation combustion chamber capable of widening the stable working range. Background technique [0002] The continuous development of aero-engines requires that the combustion chamber, one of the components, needs to work in a wider range of operating conditions. With the continuous improvement of engine power and thrust, the combustion chamber needs to work reliably with a high fuel-air ratio under high operating conditions, and must also ensure stable operation with a very low fuel-air ratio under low operating conditions. A high oil-gas ratio means that the gas temperature in the combustion chamber rises. In order to ensure the reliability of the engine, the outlet temperature field must be more uniform. Stable operation under low working conditions and low oil-gas ratio requires the existence of an oil-rich area in the combustio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/52F23R3/38
Inventor 杨谦林宇震张弛于博文梁志鹏
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap