Ellipsoidal corrugated heat transmission sheet structure for air/gas preheater

Abstract

The invention relates to an ellipsoidal corrugated heat transmission sheet structure. Corrugation of a heat transmission sheet corrugated section consists of semi-ellipsoidal curved surfaces arrayed in a matrix manner; long axes of the semi-ellipsoidal curved surfaces are in the same direction as the long side of a heat transmission sheet; and middle axes of the semi-ellipsoidal curved surfaces are in the same direction as the broad side of the heat transmission sheet. The structure has the following advantages that: 1) the corrugation of the heat transmission sheet consists of the semi-ellipsoidal curved surfaces, and is provided with a larger heat transmission surface, so that a coefficient of heat transmission is increased; 2) the semi-ellipsoidal curved corrugation has higher strength and rigidity according to a shell theory, and does not deform easily; and 3) the structure is simple, is formed by one-time stamping; and the production cost is lowered. With the adoption of the structure, a heat transmission area is increased; the strength and the rigidity are improved; the flow channel resistance is reduced simultaneously; the new balance between the reduced flow resistance and a good heat transmission effect is achieved; and a significant progress is obtained.

Description

technical field [0001] The present invention relates to a general part of heat exchange and heat transfer equipment, more particularly to an ellipsoidal corrugated heat transfer plate structure for an air / gas preheater. [0002] Background technique [0003] The fully welded plate air / gas preheater is used in the blast furnace ironmaking industry, which can significantly increase the blast temperature of the hot blast stove. The corrugated plate as its heat transfer element directly affects the heat transfer effect of the preheater. Due to the high temperature of the waste heat of the hot blast stove flue gas, the large amount of flue gas, and the required small pressure drop, the traditional heat transfer element is not suitable for Working under this kind of working condition, the heat transfer effect is poor, and it needs to be improved urgently. Contents of the invention [0004] The object of the present invention is to provide an ellipsoidal corrugated heat transfe...

AI Technical Summary

Problems solved by technology

The corrugated plate as its heat transfer element directly affects the heat transfer effect of the preheater. Due to the high temperature of the waste heat of the flue gas of the hot blast stove, the large amount of flue gas, and the small required pressure drop, the traditional heat transfer element is not suitable for Working under this working condition, the heat transfer effect is poor, and needs to be improved urgently

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