Staged combustor with two radial rotating inflow channels

Abstract

The invention discloses a staged combustor with two radial rotating inflow channels. The combustor comprises a combustion chamber, a mixed gas inlet pipe and a fuel and air inflow mixing device, wherein the combustion chamber is arranged at a top end of the staged combustor, and the fuel and air inflow mixing device is arranged at a bottom end of the staged combustor in a communicating mode; the bottom of the combustion chamber is communicated with the fuel and air inflow mixing device through a mixed gas inlet pipe, and a fuel inlet pipe and an air inlet pipe are arranged at the bottom of the fuel and air inflow mixing device. According to the combustor, mixed staged combustion of multiple fuels can be achieved, the equivalence ratio and the mixing degree of mixed gas in a channel can be controlled at the same time, and defects in an existing combustion test bed device are overcome.

Description

technical field [0001] The invention belongs to the technical field of burners, in particular to a staged burner with two radially rotating inflow passages. Background technique [0002] In the current experimental research on turbulent combustion, especially for the research on the nature of staged combustion, the difference in the degree of gas premixing and the formation of swirling turbulent airflow have always affected the progress of the experiment. There are few forming and staged combustion test benches in related fields in China, while the cost of foreign related instruments is high and the devices are large, which cannot well meet the experimental requirements and are not universal. For example, the turbulent stratified flame burner designed by Darmstadt University studies the layering and shearing effects of the flame without adding a swirler; the PRECCINSTA burner adds a fixed swirl channel and a small hole jet, and the fuel and air rotate while Mixing, the degr...

AI Technical Summary

Problems solved by technology

There are few forming and staged combustion test bench devices in related fields in China, while the cost of foreign related instruments is high and the devices are large, which cannot well meet the experimental requirements and are not universal

For example, the turbulent stratified flame burner designed by Darmstadt University studies the layering and shearing effects of the flame without adding a swirler; the PRECCINSTA burner adds a fixed swirl channel and a small hole jet, and the fuel and air rotate while Mixed, cannot adjust the degree of premixing

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