A combustor with double swirling inflow channels can be used for the study of multi-fuel blending combustion phenomena

Abstract

The invention discloses a combustor which is provided with double rotation inflow channels and capable of being used for a multi-fuel mixing combustion phenomenon research. The combustor comprises a visualization square combustion chamber, a fuel full premixing and rotating flow generation device and a fuel and air inflow mixing device. The whole combustor is arranged in a vertical mode. When the combustor works, air and fuel enter the combustor through an air inlet pipe and are premixed in a pipeline; full premixing of the fuel and the air can be facilitated through a metal hole plate embedded in the pipeline; then the premixed mixture forms stable rotating airflow through a double-layer whirlcone; and finally, the rotating airflow enters the square combustion chamber and is ignited, so that a stable combustion flame is formed. According to the combustor which is provided with the double rotation inflow channels and capable of being used for the multi-fuel mixing combustion phenomenon research, the double-layer structure design is adopted; an inner-layer structure and an outer-layer structure are very similar; single-layer or double-layer flame experiments can be designed according to the actual requirements; mixing combustion experiments with two kinds of different fuel can be conducted at the same time; the combustor can be well used cooperatively with other measuring and detecting instruments; and the combustor is capable of reaching excellent premixing and rotating flow effects, novel in design, easy to process and reliable in work.

Description

technical field [0001] The invention relates to a burner, in particular to a burner with double rotating inflow passages which can be used for research on multi-fuel mixed combustion phenomena. Background technique [0002] In the current experimental research, especially the research on the properties of premixed flames, the problems of complete gas premixing and the formation of rotating turbulent airflow have always plagued the experiment. There is less mature experience in related fields in China, which has also caused problems in related fields. There is a lack of forming combustion test bench devices, and 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 ...

AI Technical Summary

Problems solved by technology

[0002] In the current experimental research, especially the research on the properties of premixed flames, the problems of complete gas premixing and the formation of rotating turbulent airflow have always plagued the experiment. There is less mature experience in related fields in China, which has also caused problems in related fields. There is a lack of forming combustion test bench devices, and the cost of foreign related instruments is high, and the devices are large, which cannot well meet the experimental requirements and are not universal

Therefore, it is a solution to build a visual test bench through domestic mature 3D printing technology and perfect machining technology.

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