A flame stabilizer for a recirculation combustor

Abstract

The invention belongs to the technical field of turbine engines, and in particular relates to a flame stabilizer for a recirculation combustion chamber. The cross section of the aerodynamic stabilizing part of the stabilizer is a semicircular arc tube, which has the characteristics of a strong flame stabilizing vortex system and strong flame stabilizing ability; The lower part of the stabilizer adopts an arc-shaped section, which is beneficial to reduce the obstruction of other jet holes and reduce the total pressure loss. The interior of the flame stabilizer is designed as a cavity, which can not only effectively cool the wall of the flame stabilizer, but also supply low-velocity air to a specific area of ​​the combustion chamber to stabilize the flame. The solution of the present invention realizes efficient and stable operation of the combustion chamber through a simple structure, can significantly expand the boundary of fuel-lean flameout, improve combustion efficiency, and reduce production costs at the same time. Tests have proved that jet holes using this cooling method can ensure that the wall life of the jet hole part of the combustion chamber is as long as 300h under the condition that the combustion room rises above 800K and the cooling air is higher than 500K.

Description

Technical field [0001] The invention belongs to the technical field of turbine engines, and particularly relates to a flame stabilizer used for a reflux combustion chamber. Background technique [0002] In the main combustion chamber of the turbine engine, due to the large inlet flow rate and relatively small oil and gas conditions, it is easy to cause the engine to stall due to unstable combustion. In this case, large-scale improvement of the combustion chamber is likely to waste manpower and material resources, and at the same time increase the development cost of the combustion chamber. Summary of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is: how to improve the combustion chamber under small working conditions and high inlet flow rate by locally improving the main combustion zone at the head of the combustion chamber without changing the main structure of the combustion chamber Flame stability...

AI Technical Summary

Problems solved by technology

[0002] In the main combustion chamber of the turbine engine, under the conditions of high inlet flow rate and relatively small oil and gas, it is easy to cause the engine to stall due to unstable combustion

In this case, it is easy to waste manpower and material resources if the combustion chamber is greatly improved, and at the same time increase the research and development costs of the combustion chamber

Images