Spinning flow high efficiency heat exchange pipe and its producing method

Abstract

The present invention relates to a kind of heat exchange pipe for shell-and-tube heat exchanger and its making process. The high efficiency heat exchange pipe has inward spherical lobes on the high smoothness inner wall. The making process of the high efficiency heat exchange pipe includes the following steps: molding steel plate with high smoothness surfaces to form spherical lobes, cutting into required sizes, and welding the steel stripe into pipe. The spherical lobes distributing in the inner surface of the pipe can produce strong flow swirling and spoiling effect on the heat exchange medium to strengthen heat exchange efficiency and avoid scaling.

Description

technical field [0001] The invention relates to a heat exchanger element used in a heat transfer process, especially a heat exchange tube for a tube-and-tube heat exchanger, and a method for manufacturing the heat exchange tube. Background technique [0002] The shell and tube heat exchanger is a common heat exchange device. Its basic structure is to arrange multiple heat exchange tubes in the box or in the shell. In order to improve the heat exchange efficiency of the tubular heat exchanger, in the prior art, pipes such as corrugated pipes are used instead of straight-walled heat exchange pipes. Although the use of this type of heat exchange tube can improve the heat exchange efficiency, it is difficult to make the surface of the inner and outer walls have a high degree of smoothness, especially the smoothness of the inner and outer walls of the tube is required to reach 2B surface, which is very difficult to manufacture. In addition, this type of heat exchange tube is pr...

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Problems solved by technology

Although the use of this type of heat exchange tube can improve the heat exchange efficiency, it is difficult to make the surface of the inner and outer walls have a high degree of smoothness, especially the smoothness of the inner and outer walls of the tube is required to reach 2B surface, which is very difficult to manufacture

In addition, this type of heat exchange tube is prone to fouling on the inner wall during use.

When the heat exchange medium is a high-viscosity medium, medium retention will also be formed in the corrugations of the bellows, which will further reduce the heat exchange efficiency of the device

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