Film evaporation type flame stabilizer and combustion chamber

A flame stabilizer, evaporative technology, applied in combustion chambers, continuous combustion chambers, combustion methods, etc., can solve the problems of lean fuel ignition and flame stabilization capability difficult to meet the working requirements of wide flight envelopes, and achieve improved ignition performance and Flame stabilization capability, increased gas phase fuel concentration, and the effect of widening operating range

Active Publication Date: 2020-12-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to solve the problem that the concave cavity flame stabilizer which plays the role of on-duty ignition in the existing concave cavity/support plate flame stabilizer is easily affected by the radial support plate flame stabilizer, which leads to the lean ignition and flame stabilization ability of the flame stabilizer It is difficult to meet the

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
  • Film evaporation type flame stabilizer and combustion chamber
  • Film evaporation type flame stabilizer and combustion chamber
  • Film evaporation type flame stabilizer and combustion chamber

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027]Example 1: Such asfigure 1 As shown, the direction of X in the figure is the axial direction described in this embodiment, and is also the front-to-rear direction, and the direction in which the Z-axis in the figure extends is the radial direction described in this embodiment, which is also a top-down direction. , The Y-axis in the figure is the horizontal direction described in this embodiment, and it is also a left-to-right direction. The horizontal direction in this embodiment is a direction parallel to the plane formed by the XY axis. The vertical direction of is the direction parallel to the plane formed by the ZY axis.

[0028]Such asfigure 1 withfigure 2 As shown, the thin-film evaporative flame stabilizer of the present invention includes a cavity flame stabilizer 1 and a horizontally extending first splitter plate 2 arranged at the front end of the cavity flame stabilizer 1. The cavity flame stabilizer 1 includes a vertical upward extension The front edge plate 11 of the...

Example Embodiment

[0033]Example 2: Such asFigure 6 As shown, the thin-film evaporative flame stabilizer of embodiment 1 is applied to a rectangular combustion chamber, the ignition nozzle 7 of the combustion chamber opens on the main board 12, and the trailing edge of the liquid film covering plate 4 preferably does not exceed the opening of the ignition nozzle 7 position. The cavity flame stabilizer 1, the first splitter plate 2 and the second splitter plate 8 are fixedly connected to the side walls of the rectangular combustion chamber 9 through two side surfaces; the upper end surface of the supporting plate flame stabilizer 3 is fixedly connected to the front splitter plate 4, supporting The lower end surface of the plate flame stabilizer 3 is fixedly connected to the lower wall surface of the rectangular combustion chamber 9. The supporting plate flame stabilizer 3 is a thin-walled hollow piece, the outer shell 32 forms a triangular bluff body structure, and the ignition nozzle 7 is welded or me...

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

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a film evaporation type flame stabilizer and a combustion chamber. The film evaporation type flame stabilizer comprises a concave cavity flame stabilizer and a first splitter plate which is arranged at the front end of the concave cavity flame stabilizer and extends horizontally. The concave cavity flame stabilizer comprises a front edge plate extending vertically, a main plate extending backwards horizontally along the upper end face of the front edge plate and a rear edge plate arranged at the tail end of the main plate and extending downwards obliquely, and a supporting plate flame stabilizer is fixed to the lower wall face of the first splitter plate. A plurality of liquid film covering plates extending horizontally are fixed to the lower end of the front edge plate. According to the film evaporation type flame stabilizer and the combustion chamber, the damage of the radial supporting plate flame stabilizer to the flow field of the concave cavity flame stabilizer is weakened in a manner of partially shielding a concave cavity by the film covering plates, and the gas-phase fuel oil concentration in an on-duty area is increased in a film evaporation oil supply manner, so that the working range of the conventional concave cavity/supporting plate flame stabilizer is widened.

Description

technical field [0001] The invention relates to a turbofan engine afterburner combustion chamber, a sub-combustion ramjet engine combustion chamber and a turbofan / ramjet combined cycle engine multi-mode combustion chamber, in particular to a thin-film evaporation flame stabilizer and a combustion chamber. Background technique [0002] Turbine-based combined cycle (TBCC) as an air-breathing engine has the advantages of wide flight range, conventional take-off and landing, and reusability, and is considered to be the most promising hypersonic vehicle power at this stage. device. Due to the large variation of the bypass ratio in the whole working range, the low temperature of the incoming flow inside the TBCC combustion chamber and the excessive local flow velocity bring difficulties to the ignition and flame stability inside the multi-mode combustion chamber. [0003] With the increase of the airflow velocity in the modern high-performance afterburner chamber, in order to ens...

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
IPC IPC(8): F23R3/18
CPCF23R3/18
Inventor 范育新缪俊杰赵世龙吴伟秋刘琛姜凯琳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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