a flame stabilizer

Abstract

The invention discloses a flame stabilizer which can be used for an aero-engine afterburner and the like, comprising a jet device installed in a mainstream channel, wherein the jet device is providedwith injection ports, and the shape of the injection port is in a slot shape; alternatively, the shape of the injection port is a circular hole shape, the plurality of circular hole-shaped injection ports are divided into at least two groups, each group of circular hole-shaped injection ports is distributed perpendicular to the direction of the main flow direction, and the adjacent two groups of circular hole-shaped injection ports are staggered. The flame stabilizer sprays continuous jet at a certain angle in the mainstream through the jet device, and the jet forms an aerodynamic barrier in the mainstream, and then forms a return zone after the aerodynamic barrier. The return zone can effectively stabilize the flame, so the flame stabilizer is also called a jet flame stabilizer. The flamestabilizer has the advantages of high temperature resistance and deformation resistance, high combustion efficiency, low pressure loss, weak infrared radiation, continuous, effective and stable aerodynamic barrier, large return zone, good flame stabilization effect and wide combustion stabilization boundary.

Description

technical field [0001] The invention relates to combustion equipment, in particular to a flame stabilizer. Background technique [0002] The flame stabilizer of the traditional aero turbine engine afterburner generally adopts a bluff body flame stabilizer, such as a V-shaped blunt body flame stabilizer. Then, on the basis of the V-shaped blunt body flame stabilizer, a suction flame stabilizer, an evaporative flame stabilizer, a double V-shaped flame stabilizer and a dune vortex flame stabilizer were developed. The flame stabilizer achieves the effect of stabilizing the flame by creating a recirculation zone in the incoming flow to reduce the incoming flow velocity, enhance the mixing of oil and gas, and recirculate the high-temperature combustion products to continuously ignite the unburned combustible mixture in the incoming flow. The wall temperature of the existing flame stabilizer is uneven, which is prone to structural deformation; and the combustion efficiency is low,...

AI Technical Summary

Problems solved by technology

The wall temperature of the existing flame stabilizer is uneven, which is prone to structural deformation; and the combustion efficiency is low, the flame is long, resulting in a large length of the combustion chamber; the pressure loss is large in the non-afterburner state; the infrared radiation is strong; while the existing aerodynamic flame stabilizer Due to the use of discrete hole-shaped injection ports for fluid injection, a continuous, effective and stable aerodynamic barrier cannot be formed, resulting in a small recirculation zone of the flame stabilizer, poor flame stabilization effect, and narrow combustion stability boundary

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