Strengthened heat exchange tube

Abstract

The invention provides a strengthened heat exchange tube comprising a heat exchange tube and a strap-type metal slice, wherein one surface of the strap-type metal slice is a smooth plane, and the other surface of the strap-type metal slice obtains a super hydrophobic surface by advanced manufacturing methods, such as precise rolling, chemical, electrochemical methods and the like; the super hydrophobic surface is burr bulge with a micro-nano structure; the strap-type metal slice is tightly and spirally coiled on the outer surface of the heat exchange tube; the smooth surface of the strap-type metal slice and the outer surface of the heat exchange tube are tightly laminated, and the coiled strap-type metal slice is fixed on the heat exchange tube; before the strap-type metal slice is coiled, the outer surface of the heat exchange tube is covered with heat conduction filler, and the strap-type metal slice is coiled and fixed on the heat exchange tube covered with heat conduction filler. The heat transfer tube of the invention has simple production, convenient installation, favorable adaptability and small possibility of scaling and has the effect on strengthening heat transfer.

Description

technical field [0001] The invention relates to a heat transfer tube used in equipment such as shell-and-tube heat exchangers, heat exchange reactors, and condensers. The heat transfer tube can be widely used in thermal power generation, petrochemical industry, food, pharmaceuticals, light industry, metallurgy, Shell-and-tube heat exchange equipment and reaction equipment in shipbuilding and other industries. Background technique [0002] Existing shell-and-tube heat exchangers generally use various forms of enhanced heat transfer heat transfer tubes, such as thin-walled corrugated / corrugated heat transfer tubes, which have the advantages of enhancing heat transfer by disturbance and increasing surface heat transfer. Good heat transfer enhancement effect. At the same time, due to the good extensibility and shrinkability of the tube wall, the thin-wall corrugated / corrugated heat transfer tube also has the advantages of small thermal stress, which makes it widely used in indu...

AI Technical Summary

Problems solved by technology

However, this kind of heat transfer tube is difficult to process and shape, the tube wall is thicker, and the scale on the inner wall of the tube is not easy to remove, etc., so the application field is limited.

Since the hoop reinforced thin-walled heat transfer tube is designed with obvious grooves outside the tube, it can achieve the purpose of enhancing heat transfer by disturbing the fluid outside the tube and increasing the heat transfer area to a certain extent, but the stress concentration on the edge of the groove and the bottom of the groove is obvious and wasteful. The shortcomings of the material of the groove part cannot be overcome

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