A low-pollution combustion chamber

Abstract

The invention relates to a low-pollution combustion chamber. The chamber comprises a casing and a flame tube arranged in the casing, wherein the flame tube comprises a combustion part, an air inlet flow guide pipe and an exhaust part, the combustion part comprises a starting end and a closed stagnation end, the starting end of the combustion part communicates with a flow guide air outlet of the air inlet flow guide pipe, the flow guide air outlet faces the closed stagnation end, an exhaust port is further reserved between the side wall of the flow guide air outlet and the side wall of the starting end, and the exhaust part communicates with the combustion part through the exhaust port. According to the combustion chamber, the combustion part is matched with the flow guide air inlet facingthe closed stagnation end, so that fuel and air move towards the closed stagnation end after entering the flame tube, stagnation point reflux is formed, so that combustion in the flame tube contains fresh fuel and air, and contains the combusting gas as well, the oxygen content of local combustion in the flame tube can be effectively controlled, the combustion temperature can be reduced, and therefore pollution discharge can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of gas turbines, in particular to a low-pollution combustion chamber with stagnation point backflow. Background technique [0002] With the improvement of people's awareness of environmental protection, the emission standards for engine combustion chamber pollutants are becoming increasingly strict. The latest CAEP8 standard proposes to reduce NOx emissions by 15% compared with the CAEP6 emission standards. The air is fully mixed and burned to reduce NOx emissions; [0003] In the prior art, in order to fully mix the fuel and air, most combustion chambers have been improved on how to arrange the combustion chamber intake air and the way of fuel supply, but because the fuel is usually injected into the combustion chamber through the nozzle, the fuel flow rate in the combustion chamber is relatively fast, and the fuel It still cannot be fully mixed with air, and at the same time, the fuel burns in the combust...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in order to fully mix the fuel and air, most combustion chambers have been improved on how to arrange the combustion chamber intake air and the way of fuel supply, but because the fuel is usually injected into the combustion chamber through the nozzle, the fuel flow rate in the combustion chamber is relatively fast, and the fuel It still cannot be fully mixed with air, and the fuel burns in the combustion chamber for a short time, which cannot ensure sufficient fuel combustion, which also leads to more NOx and damages the environment

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