Swirler structure for rotary sliding arc ignition

Abstract

The invention discloses a swirler structure for rotary sliding arc ignition. The swirler structure is connected with a flame tube and a cartridge receiver of a turbine engine and is used for executing ignition operation on the flame tube of the turbine engine, and the swirler structure comprises a swirler main body, a nozzle and an ignition device. The swirler main body is arranged at the air inlet end of the flame tube, and the air inlet end of the flame tube communicates with the cartridge receiver through the swirler main body; and the nozzle is arranged at the tail end of the swirler body and used for supplying fuel oil to the flame tube. The ignition device arranged in a main combustion area of a combustion chamber in a traditional turbine engine swirler is redesigned, and the ignition device is installed at the position of the swirler main body, so that the ignition device is prevented from being directly arranged in the main combustion area, the influence of the ignition device on a flow field of the main combustion area is reduced, and ablation of an ignition plug is relieved.

Description

technical field [0001] The invention belongs to the technical field of turbine engines, in particular to a swirl structure for rotating sliding arc ignition. Background technique [0002] At present, the conventional ignition technology scheme of the turbine engine combustion chamber is shown in the figure, and the ignition system is composed of a conventional vortex B and an electric nozzle A. Among them, the functions of the vortex are: first, to generate a high-speed rotating jet at the head of the flame tube to form a low-pressure recirculation zone to stabilize the flame; second, to provide fresh air required for fuel combustion, and to control the main combustion zone to have a suitable oil-gas ratio; The third is to improve fuel atomization and gas mixture formation. The ignition device adopts the electric nozzle A, and uses the high temperature generated by the instantaneous discharge to ignite the mixed gas to realize the ignition of the combustion chamber. [000...

AI Technical Summary

Problems solved by technology

[0004] Although the above ignition schemes are mature and widely used, and generally perform well, the ignition device of the existing scheme is arranged in the main combustion area, which will affect the flow field of the combustion chamber on the one hand, and on the other hand, the ignition process is easily affected by the nearby airflow. The influence of the flow field has high requirements on the aerodynamic design, and the ignition probability is relatively low

In addition, affected by the high temperature in the main combustion area, the ignition device is also prone to ablation and carbon deposition, so it needs to be checked and replaced frequently

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