Efficient spiral fin heat exchange device

Abstract

The invention discloses an efficient spiral fin heat exchange device. The efficient spiral fin heat exchange device comprises a sealed shell, a spiral fin heat exchanger which is axially vertical to an air inlet, and an air outlet formed in the side, opposite to the air inlet, of the shell, wherein the air inlet connected with a boiler smoke pipeline is formed in one side of the shell; the spiral fin heat exchanger comprises a water inlet tank and a water outlet tank which are respectively connected with a water inlet pipe and a water outlet pipe; a plurality of spiral fin heat exchange tubes are arranged between the water inlet tank and the water outlet tank; the two ends of the spiral fin heat exchange tubes are respectively connected with the water inlet tank and the water outlet tank through roller bearings; the length of the spiral fin heat exchange tubes is larger than the width of the air inlet; the spiral fin heat exchange tubes comprise dynamic heat exchange tube sections opposite to the air inlet and exhaust heat exchange tube sections positioned on one side of the air inlet; and the air outlet is opposite to the exhaust heat exchange tube sections. According to the efficient spiral fin heat exchange device, the spiral fin heat exchanger can ensure that spiral fins are in full contact with boiler smoke for heat exchange, flue gas is promoted to form a turbulent current, and the heat exchange area is relatively enlarged, so that the heat exchange efficiency is improved.

Description

technical field [0001] The invention belongs to the field of boiler flue gas heat exchange, and relates to a heat exchanger, in particular to a high-efficiency spiral fin heat exchange device. Background technique [0002] In the current existing heat exchange equipment, spiral finned tubes are widely used because they have greatly improved the effect of expanding the heating surface and enhancing heat transfer compared with traditional finned tubes. However, because the fins are integrated in the base tube In general, the fins and the base tube are fixed, so the part of the fins that are not facing the front of the boiler flue gas cannot fully contact with the boiler flue gas, and the surface of the fins is smooth, and when the air passes through, the fins are easy to A boundary layer is formed, and the heat exchange efficiency between the air in the boundary layer and the fins is very low. It can be seen that the heat transfer efficiency of the spiral finned tube still ne...

AI Technical Summary

Problems solved by technology

[0002] In the current existing heat exchange equipment, spiral finned tubes are widely used because they have greatly improved the effect of expanding the heating surface and enhancing heat transfer compared with traditional finned tubes. However, because the fins are integrated in the base tube In general, the fins and the base tube are fixed, so the part of the fins that are not facing the front of the boiler flue gas cannot fully contact with the boiler flue gas, and the surface of the fins is smooth, and when the air passes through, the fins are easy to A boundary layer is formed, and the heat transfer efficiency between the air in the boundary layer and the fins is very low

It can be seen that the heat transfer efficiency of spiral finned tubes still needs to be improved.

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