Bunsen burner capable of realizing multi-flame forms

A Bunsen burner and shape technology, applied in the field of laboratory equipment, can solve the problems of reducing the flame temperature, affecting the effect of combustion teaching experiment demonstration, not considering the improvement of the lamp tube and quantitative control of the gas, etc., so as to improve the flame temperature and enrich the teaching demonstration. Function, improve the effect of teaching demonstration experiment

Inactive Publication Date: 2005-09-28
TSINGHUA UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing domestic and foreign technical schemes, the flame shape of the Bunsen burner is single, and its technical schemes are more focused on the design of lamp body materials, lamp holders and gas-supporting dampers, without considering the improvement of lamp tubes and quantitative control of gas The technical measures, which make the flame can only inhale the combustion-supporting gas by entrainment, cannot quantitatively control the flow rate, which greatly affects the demonstration effect of the combustion teaching experiment, cannot better stimulate students' interest in thermal science, and affects the quality of teaching
On the other hand, due to the inability to ensure that the fuel and the oxidizing gas are mixed according to the equivalent ratio Φ, the flame temperature decreases, which affects the heating effect

Method used

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  • Bunsen burner capable of realizing multi-flame forms
  • Bunsen burner capable of realizing multi-flame forms
  • Bunsen burner capable of realizing multi-flame forms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: select the inner diameter d of the inner tube of the lamp to be 4 mm, the wall thickness to be 1 mm, and select the gap δ to be 1 mm, so that the inner diameter of the outer tube of the lamp is 8 mm; the length of the inner tube is selected to be 120 mm, and the length of the outer tube is selected to be 40 mm , then the height of the outer tube will be lower than the height of the inner tube, and the height difference Δl is -60 mm (the height difference of the concentric thread of the lamp holder Bunsen is 20 mm). Methane gas is used as the fuel gas, air is used as the supporting gas, the flow rate of methane is adjusted to 1L / min, and the flow rate of air is 3L / min to obtain a recommended diffusion flame.

Embodiment 2

[0019] Embodiment 2: The inner diameter of the inner tube of the lamp is selected to be 6 mm, the wall thickness is 2 mm, and the gap is selected to be 5 mm, so that the inner diameter of the outer tube of the lamp is 20 mm. The length of the inner tube is 220 mm, and the length of the outer tube is 200 mm (the height difference between the concentric threads of the lamp holder is 20 mm), so the inner and outer tubes are of the same height. Adjust the flow of methane to 0.1L / min and the flow of air to 7L / min to obtain a "comet" flame.

Embodiment 3

[0020] Embodiment 3: The inner diameter of the inner tube of the lamp is selected to be 10 mm, the wall thickness is 3 mm, and the gap is selected to be 10 mm, so that the inner diameter of the outer tube of the lamp is 36 mm. If the length of the inner pipe is 150 mm and the length of the outer pipe is 930 mm, then the outer pipe is higher than the inner pipe, and the height difference Δl is 800 mm. Adjust the flow rate of methane to 5 L / min and the flow rate of air to 40 L / min to obtain incomplete premixing flame.

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Abstract

The Bunsen burner capable of realizing several kinds of flame forms is one kind of gas burner. The Bunsen burner includes seat, burner pipe, fuel gas inlet pipe and combustion-supporting gas inlet pipe. The burner pipe is one concentric pipe comprising inner pipe of 2-50 mm inner diameter and outer pipe, the interval between the inner pipe and the outer pipe is 1-100 mm, and the length difference between the inner pipe and the outer pipe is -200 mm to +1000 mm. By means of selecting the different lengths and diameters of both the inner pipe and the outer pipe, the present invention can obtain various flames in different forms and this perfects further the teaching demonstration and heat science research one Bunsen burner.

Description

technical field [0001] The invention relates to a gas lamp, in particular to a Bunsen burner used for teaching demonstration experiments and heating samples, and belongs to the technical field of laboratory equipment. Background technique [0002] In thermal science majors and laboratories of various colleges and universities, Bunsen burners are used for teaching demonstration experiments and heating samples. Because its temperature is higher than the flame of alcohol lamp and its structure is simple, it is widely used. At present, the commonly used Bunsen burner only achieves qualitative control through valve adjustment for fuel gas and supporting gas, and cannot accurately match the combustion volume. In order to make the gas burn better, the disclosed technical solution is to add a replaceable Combustion sheet, in order to regulate the intake air volume of supporting gas, as the utility model that the patent No. is 88210014. There are many similar products in foreign co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/04F23D14/56
Inventor 王宇姚强
Owner TSINGHUA UNIV
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