Supersonic gas collision type heating device and heating method
A heating device, supersonic technology, applied in the direction of heating device, other non-combustion heat generation, etc., can solve problems such as no, and achieve the effect of high temperature, fast heating speed, and not easy to damage
Inactive Publication Date: 2015-04-29
XI AN JIAOTONG UNIV
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[0016] Such as figure 1 , figure 2 As shown, a colliding gas heating device includes two oppositely arranged variable cross-section (circular) inlet airflow channels 1 and 8 that shrink first and expand later, and two outlet airflow channels that are perpendicular to the direction of the inlet airflow channel. Channels 5, 6 (rectangular cross-section), air flow channels 1, 8, 5, 6 are made of pipe 2, the cross-sectional area of the outlet air flow channel is 6 times the maximum cross-sectional area of the inlet air flow channel, all pipes are well sealed and the inner wall is equipped with The heat insulation layer 7, the junction of the inlet airflow channel and the outlet airflow channel is a collision area 3, and a heat transfer part 4 with good thermal conductivity is located in the center of the collision area. The heat transfer component is fixed on the outer wall of the pipeline running through the center of the collision zone by the flange 9 and the bolt 10 .
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The invention discloses a supersonic gas collision type heating device and heating method. The heating device comprises two sections of variable cross-section inlet gas flow channels and two sections of outlet gas flow channels, wherein the variable cross-section inlet gas flow channels are opposite and are contracted and then expanded, and the variable cross-section inlet gas flow channels and the outlet gas flow channels are formed by heat insulation pipelines, the outlet gas flow channels are perpendicular to the inlet gas flow channels, and the cross section area of the outlet gas flow channels is larger than that of the inlet gas flow channels. A gas collision area is formed at the connecting position of the outlet gas flow channels and the inlet gas flow channels, and a heat conducting part with good heat conductivity is arranged at the center of the gas collision area. Compressed air is fed into the two sections of inlet gas flow channels in the opposite directions, air flow is accelerated in the inlet gas flow channels to reach supersonic speed, then collide in the gas collision area, so that the gas flows out through the outlet gas flow channels in the opposite directions after the gas temperature is fast increased, and heat is conducted by the heat conducting part in the collision area to a periphery connected with the heat conducting part to heat a medium to be heated. The supersonic gas collision type heating device and heating method have the advantages of a simple structure, low manufacturing cost, high heating speed, energy saving, efficiency, cleanliness, sanitation and the like.
Description
technical field [0001] The invention relates to a gas collision heating device and a heating method, in particular to a supersonic gas collision heating device and a heating method. Background technique [0002] High-temperature gas is widely used in industrial sites such as metallurgy and steelmaking industries. Conventional gas heating (such as combustion, electric heating, etc.) uses heat conduction, convection, and heat radiation to first transfer heat to the gas near the surface of the heating element, and then gradually raise the temperature of the gas through convective heat exchange. To make the gas as a whole reach the required temperature, a certain heat transfer time is required. When heating with temperature difference heating, in order to increase the heating rate, it is necessary to increase the external temperature and increase the temperature gradient, which also increases the heat loss. [0003] And the heating method of the opposite collision of the high-...
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IPC IPC(8): F24J3/00
Inventor 高铁瑜李军刘立军李国君徐勋朱江楠
Owner XI AN JIAOTONG UNIV