Backflow elastic striking type self-cleaning flue gas heat exchange tube

Abstract

The invention discloses a backflow elastic striking type self-cleaning flue gas heat exchange tube, and belongs to the field of heat exchange tubes. According to the heat exchange tube, flue gas passes through the space between a heat exchange tube body and a backflow inner tube, so that the flue gas flows in an annular mode, on one hand, the heat exchange area between the flue gas and an external medium is enlarged through the heat exchange tube body, and the heat exchange efficiency is greatly improved; and on the other hand, before flue gas flows out of the heat exchange tube body, part of the flue gas is guided into the backflow inner tube through a backflow introducer, the flue gas gradually flows back along the backflow inner tube, and finally the flue gas is guided into the heat exchange tube body again by a double-cone extractor and is converged with the introduced flue gas, so that the flue gas is jointly guided by the double-cone extractor and the backflow introducer, part of flue gas continuously flows back in the space between the heat exchange tube body and the backflow inner tube, a magnetic ball is driven to do loop movement, the inner wall of the heat exchange tube body is continuously impacted, cleaning of the inner wall of the heat exchange tube body is achieved, and the influence of impurity accumulation on the heat exchange effect of the heat exchange tube body is effectively reduced.

Description

technical field [0001] The invention relates to the field of heat exchange tubes, and more specifically relates to a backflow bounce type self-cleaning flue gas heat exchange tube. Background technique [0002] Due to the shortage of energy sources, with the further development of energy-saving work. A variety of new, energy-saving and advanced furnace types are becoming more and more perfect, and the use of high-quality insulation materials such as new refractory fibers has significantly reduced the heat dissipation loss of the furnace. The advanced combustion device is used to strengthen the combustion, reduce the amount of incomplete combustion, and the air-fuel ratio tends to be reasonable. However, the technology of reducing heat loss from flue gas and recovering flue gas waste heat is still not progressing fast. In order to further improve the thermal efficiency of the kiln and achieve the goal of saving energy and reducing consumption, recovering flue gas waste heat ...

AI Technical Summary

Problems solved by technology

[0004] Since the heat exchange tube is used to exchange heat between two media, it shows that it has high thermal conductivity, but because the flue gas contains impurities such as particles, dust, and waste residue, these impurities will be lost in the exchange after a long time of use. Gradually adhere and accumulate on the inner wall of the heat pipe, thereby affecting the thermal conductivity of the heat exchange tube and reducing the heat exchange effect of the heat exchange tube

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