Liquid Bunsen burner

Abstract

The invention discloses a liquid Bunsen burner which comprises a nozzle, a mixing tube and a lamp holder. The nozzle, the mixing tube and the lamp holder are sequentially connected. The nozzle comprises an inner air tube, a liquid tube and an outer air tube, wherein the inner air tube, the liquid tube and the outer air tube are coaxially installed, the inner air tube is located on an inner ring and used for spraying air or combustion-supporting gas, the liquid tube is located on a middle ring and used for spraying liquid, and the outer air tube is located on an outer ring and used for spraying air. The mixing tube is a U-shaped tube and is gradually expanded from one end to the other end. The lamp holder is a conical tube with the bottom diameter equal to the diameter of the mixing tube. A burner port for burning liquid is formed in an opening of the conical tube of the lamp holder. According to the liquid Bunsen burner, stabilized atomization of liquid fuel is achieved under the situation that the pressure of the liquid fuel and the pressure of feeding air are slightly higher than atmospheric pressure, the cost of the design of the whole liquid Bunsen burner is small compared with other experimental facilities, the amount of the required fuel for the experiment is only about 10 ml, the experimental expense is reduced, and the flame propagation velocity is conveniently measured.

Description

technical field [0001] The invention relates to the field of burning appliances, in particular to a liquid Bunsen burner. Background technique [0002] The flame propagation velocity refers to the propulsion speed of the flame front along its normal direction relative to the direction of the unburned material. The flame propagation velocity characterizes the moving speed of the flame front in the combustion process in space, and is one of the important data for studying flame stability. Methods for measuring flame propagation velocity include Bunsen burner method, cylindrical tube method, constant volume sphere method, soap bubble method, opposed flame method and plane flame burner method, etc. Among them, the Bunsen burner flame is the most common flame in the laboratory. The Bunsen burner has a simple structure and is easy to operate. It is an important basic experimental bench in thermal science experiments. Existing Bunsen burners are all gas Bunsen burners. Fuel gas is...

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Problems solved by technology

[0003] At present, there is no Bunsen burner that uses liquid as fuel, and its difficulties mainly focus on the evaporation of liquid fuel under the condition of small flow rate and the pulsation phenomenon caused by the strong instability of the mixing process with air on the flame stability, etc., so that it cannot be obtained. stable laminar flame

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