Heating device of radiant tube
A radiant tube heating and radiant tube technology, applied in the field of radiant tube heating, can solve the problems of low thermal efficiency and limited heat exchange area, and achieve the effects of increasing heat exchange area, reducing flame temperature, and increasing reflux
Active Publication Date: 2013-01-02
MCC CAPITAL ENGINEERING & RESEARCH +1
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- Application Information
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Problems solved by technology
However, due to the existing single-ended casing type, P type, double P type and other radiant tube heating devices using self-preheating integrated burners or single preheater burners, the heat exchange area is limited due to structural form and space constraints. Many technical problems such as low thermal efficiency
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[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0029] Please refer to figure 1 , figure 2 , are respectively the structural schematic diagram and the figure 1 Schematic diagram of the cross-sectional structure in the direction of A-A. As shown in the figure, the radiant tube heating device proposed by the present invention includes a double-A type radiant tube 1, two heat exchangers 2 and a burner 3. The double-A type radiant tube 1 consists of a first side tube 11 and a second side tube 12. , the middle pipe 13, the two back smoke pipes 14 and the installation pipeline are connected. Specifically, the first side pipe 11, the second side pipe 12, and the middle pipe 13 are in the shape of straight pipes, and the two back pipes 14 are in the shape of continuous arcs. The f...
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The invention discloses a heating device of a radiant tube. The heating device comprises a double-A-type radiant tuber, a heat exchanger and a nozzle, wherein the double-A-type radiant tube comprises an intermediate tube, a first side tube and a second side tube; the first side tube and the intermediate tube form an enclosed first flue gas circulation channel; the second side tube and the intermediate tube form a second flue gas circulation channel; an intermediate mounting pipeline, a first mounting pipeline and a second mounting pipeline extend outwards at the same side of the radiant tube;the heat exchanger comprises a first heat exchanger and a second heat exchanger; and the nozzle is fixedly arranged in the intermediate mounting pipeline, and the first heat exchanger and the second heat exchanger are respectively communicated with the nozzle through an air conduit. According to the invention, the temperatue distribution of the radiant tube is uniform, the flame temperature is reduced, and the NOx emission is reduced; the heat exchange area is increased, the air preheating temperature can be improved effectively, the smoke discharge temperature can be lowered, and the thermalefficiency is increased; and the service life of the radiant tube is prolonged, and the temperature uniformity of the radiant tube is improved.
Description
technical field [0001] The invention belongs to the technical field of radiant tube heating, and in particular relates to a double-A type radiant tube heating device for a protective atmosphere furnace, which is applicable to various radiant tube heating furnaces and heat treatment furnaces. Background technique [0002] In the field of industrial furnaces such as heating furnaces and heat treatment furnaces, radiant tube heating devices are used in protective atmosphere furnaces and provide heat sources. The main technical indicators of the radiant tube heating device are temperature uniformity and thermal efficiency. At present, the traditional radiant tube heating devices have U-shaped and W-shaped radiant tubes. The combustion gas is mixed and burned in the U-shaped or W-shaped tubes, and the heat is transferred to the tubes through convection and radiation heat transfer to achieve the purpose of heat transfer. . However, this type of radiant tube heating device has te...
Claims
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IPC IPC(8): F23D14/12F23D14/58F23D14/66
CPCY02E20/34
Inventor 刘长春吴启明江华
Owner MCC CAPITAL ENGINEERING & RESEARCH