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Design method of a valveless self-actuated pulse combustion type kiln and kiln thereof

A technology of pulsating combustion and design method, applied in combustion equipment, lighting and heating equipment, etc., can solve the problems of low pulsating heat transfer efficiency, large peripheral size, small peripheral size, etc., and achieves convenient adjustment of pulsation frequency, small peripheral size, The effect of small aspect ratio

Inactive Publication Date: 2007-02-07
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the shortcomings of the existing pulsating combustion furnace, such as large aspect ratio, limited burner cavity cross-sectional area, large peripheral size, and low pulsating heat transfer efficiency, in the present invention, the furnace adopts a multi-section structure, and the smoke pipe adopts a multi-section structure. Integrated and arbitrary back-bent structure, providing a valveless self-excited pulsating combustion type industrial furnace that does not need to meet the restriction of aspect ratio of 10, small aspect ratio, small peripheral size, and high pulsating heat transfer efficiency

Method used

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  • Design method of a valveless self-actuated pulse combustion type kiln and kiln thereof
  • Design method of a valveless self-actuated pulse combustion type kiln and kiln thereof
  • Design method of a valveless self-actuated pulse combustion type kiln and kiln thereof

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Embodiment 1

[0028] refer to figure 2 , 3 , 4. A design method for a valveless self-excited pulsating combustion furnace. In this design method, the flow distance from the fan air inlet of the burner to the fuel nozzle and the flame stabilizer is 1 / 5 to 1 of the entire gas passage flow / 3; Furnace hearth 1 adopts pipelines with multiple sections of different cross-sectional areas, and the furnace passage is branched into a plurality of smoke pipe passages 2, and the smoke pipe passage 2 is a curved passage, and the sum of the areas of each cross-section of a plurality of smoke pipe passages is 20-30% of the cross-sectional area of ​​the furnace; the equivalent diameter d of the smoke pipe channel satisfies the following relationship (1):

[0029] d 1.84 · c o π · f - - - ...

Embodiment 2

[0043] refer to figure 2 , 3 , 4, a valveless self-excited pulsating combustion type industrial furnace, including a burner, a furnace 1, a smoke pipe passage 2, a front smoke box 3, a rear smoke box 4 and a chimney, and the burner extends into the In the furnace 1, the furnace 1 is connected to the smoke pipe 2, the smoke pipe 2 is connected to the front smoke box 3, and the rear smoke box 4, and the furnace 1 is connected to a plurality of smoke pipe passages 2, and the furnace 1 is composed of Composed of pipelines with multiple sections of different cross-sectional areas, the smoke pipe passage 2 is a curved passage, and the sum of the cross-sectional areas of the multiple smoke pipe passages is 20 to 30% of the cross-sectional area of ​​the furnace; the equivalent diameter of the smoke pipe passage is d satisfies the following relationship (1):

[0044] d 1.84 · c o ...

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Abstract

A design method of a valveless self-actuated pulse combustion type kiln is disclosed, wherein the flow distance away from the fan inlet of the burner to the fuel nozzle and the flame holder is 1 / 5-1 / 3 of the whole gas duct flow. The hearth adopts the tubes with different cross sectional areas. The hearth tubes are offset into a plurality of smoke tube passages, wherein the smoke tube passages are bending passages. The sum of each cross sectional area of the smoke tube passages is the 20-30% of the hearth cross sectional areas. The equivalent diameter d of the smoke tube passages satisfies the following relations (1).

Description

(1) Technical field [0001] The invention relates to a design method of an industrial furnace and a pulse combustion furnace. (2) Background technology [0002] The working principle of the pulsation boiler is realized based on the thermoacoustic conversion technology. The so-called thermoacoustic conversion technology is a method and device that can realize the mutual conversion between heat energy and sound energy under certain conditions, and its typical representative is the valveless pulsation combustion device-Rijke (Rijke) tube. [0003] A rick tube is a straight tube with openings at both ends, such as figure 1 shown. The heat source is located at the 1 / 4 tube length of the lower port, which can be an electric heating wire mesh or a flame. The air flow enters from the lower end of the pipeline shown in the figure, which can be natural ventilation or artificial ventilation. For a Rick tube, the side where the gas flows in is called the cold end, and the side where ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C99/00
Inventor 钟英杰张雪梅李华任建莉徐璋
Owner ZHEJIANG UNIV OF TECH
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