Unlock instant, AI-driven research and patent intelligence for your innovation.

A combustion chamber structure

A combustion chamber, gas technology, applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc., can solve the difficulty in meeting the requirements of flow resistance and flame stability, increased friction loss between air flow and cylinder wall, and the structural length of the combustion chamber Increase and other problems, to achieve the effect of improving mixing uniformity, improving flame stability, and shortening the length

Active Publication Date: 2021-07-16
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition of high-speed incoming flow, the friction loss between the air flow and the wall of the cylinder increases significantly. The use of the traditional full-cone structure will lead to an increase in the structural length of the combustion chamber and an increase in friction loss. In the related art, the large groove width stabilizer structure It is difficult to meet the requirements of the new generation afterburner for flow resistance and flame stability

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
  • A combustion chamber structure
  • A combustion chamber structure
  • A combustion chamber structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0032] figure 1 A schematic structural diagram of a combustion chamber structure provided by an embodiment of the present disclosure is schematically shown. refer to figure 1 , combined with Figure 2-Figure 5 ,right figure 1 The structure shown is described in detail.

[0033] The combustion chamber structure in the embodiment of the present disclosure is applied in the afterburner of a turbojet engine with a wide speed range and high thrust-to-weight ratio, and the combustion chamber structure is located behind the low-pressure turbine. The combustion chamber structure includes a truncated cone 1 , a diffuser 2 , a flame tube 3 , a guide ring 4 , a lobe mixer 5 and a casing 7 .

[0034] The truncated cone 1 is ...

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

A combustion chamber structure. The combustion chamber structure includes: a truncated cone (1); a diffuser (2), sleeved outside the truncated cone (1), including an inner profile (21) and an outer profile (22); a flame tube (3) , to connect the tail end of the outer profile (22); the guide ring (4), located in the diffuser (2), has a high-temperature gas between the inner profile (21), and the outer profile (22) ) into pure air; the lobe mixer (5) is evenly distributed along its circumferential direction with a plurality of double-lobe structures (51), and each double-lobe structure (51) is defined by the radial height and width It consists of two different lobes, which are set in the diffuser (2), the front end is connected to the tail end of the guide ring (4), and the rear end is flush with the tail end of the truncated cone (1), which is used for high-temperature gas and The pure air is mixed and forms a flowing vortex (6) in the flame tube (3) behind it, so that the high-temperature gas burns stably in the flowing vortex (6). Improved blend uniformity and flame stability.

Description

technical field [0001] The invention relates to the field of power plant combustion, in particular to a combustion chamber structure. Background technique [0002] The ratio of the external flow rate to the internal flow rate of the turbojet engine with a wide speed range and high thrust-to-weight ratio is increased from a small bypass ratio of 1 to a large bypass ratio of more than 20. The range of airflow parameters at the inlet of the afterburner increases, and the non-uniformity increases, which brings great challenges to the mixing design of the airflow and the combustion organization. Under complex high-speed, multi-duct air intake conditions, the mixing uniformity of the airflow is the primary problem faced in the design. [0003] Under high flow conditions, special devices must be used in the combustion chamber to stabilize the flame. In related technologies, for example, a swirl structure is used to stabilize the flame, or a flame stabilizer with a blunt body stru...

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 Patents(China)
IPC IPC(8): F23R3/18F23R3/28
CPCF23R3/18F23R3/286
Inventor 邓爱明赵庆军胡斌赵巍项效镕隋秀明
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI