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A Venturi and test bench technology, applied in laboratory benches/lab benches, chemical analysis using combustion, etc., can solve problems such as explosion concentration, safety accidents, insufficient mixing, etc., and achieve the effect of low energy consumption
Pending Publication Date: 2020-02-11
XI AN JIAOTONG UNIV +1
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The gas premixed by the three-way pipe is not uniform enough. The direct combustion of the premixed gas may cause the mixed gas to not be fully combusted due to improper gas mixing ratio and insufficient mixing, which will affect the flame stability during the combustion process, and may even cause partial mixed gas. Reaching the explosive concentration limit causes a safety accident
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0031] The invention is a Venturi premixed swirl combustion test bench, which includes a nitrogen cylinder a1, a methane cylinder b2, an oxygen cylinder c3, a nitrogen cylinder d4, a valve a5, a valve b6, a valve c7, a valve d8, a flow rate Meter a9, flow meter b10, flow meter c11, flow meter d12, connecting pipe a13, connecting pipe b14, venturi pipe a15, venturi pipe b16, connecting pipe c17, connecting pipe d18, connecting pipe e19, connecting pipe f20, three Through pipe a21, tee pipe b22, connecting pipe g23, elbow a24, connecting pipe h25, elbow b26, elbow c27, connecting pipe outside the swirl frame a28, connecting pipe i29, elbow d30, ...
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Abstract
The invention discloses a venture premixed swirl combustion experiment table. The experiment table comprises a nitrogen gas cylinder, a methane gas cylinder, an oxygen gas cylinder, valves, flow meters, connecting pipes, venturi tubes, three-way pipes, elbows, a swirl frame outer connecting pipe, a swirl combustor, an igniter and an experiment table body; the swirl combustor comprises a combustionchamber, a combustor front cover, a middle swirl frame, a combustor rear cover, a screw and a nut; the combustion chamber comprises a combustion chamber front section, a combustion chamber rear section, a flue, the igniter, an observation hole and a safety valve. Methane and nitrogen are evenly mixed through the venturi tube, oxygen and nitrogen are evenly mixed through the venturi tube, and thena mixture tangentially enters the swirl combustor to be fully combusted. By adjusting the opening degrees of the valves of different gas cylinders, the flow of gases can be adjusted, and the mixing ratio of the gases is changed. According to the invention, gases with different mixing ratios can be uniformly mixed.
Description
technical field [0001] The invention relates to gas premixed combustion, in particular to a Venturi premixed swirl combustion test bench. Background technique [0002] The Venturi tube has many advantages such as simple structure, stability and durability, and has broad application prospects in various practical fields such as production and life, such as measuring flow rate and realizing gas mixing. The gas premixed by the three-way pipe is not uniform enough. The direct combustion of the premixed gas may cause the mixed gas to not be fully combusted due to improper gas mixing ratio and insufficient mixing, which will affect the flame stability during the combustion process, and may even cause partial mixed gas. Reaching the limit of explosive concentration will cause a safety accident. Therefore, a Venturi premixed swirl combustion test bench has become one of the technical keys in this field. Contents of the invention [0003] The technical problem mainly solved by th...
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