Rectangular tube bundle heat exchanger adopting swirl plate support and its intensified heat-conduction method

Abstract

The invention discloses a rectangle tube bundle heat-exchanger supported by the vortex sheet and a strengthening heat-transfer method. The heat-exchanger comprises the following parts: a barrel body, a plurality of rectangle tube bundles, a tube plate, an up and down sub, a shell pass of the heat-exchanger, an in-out interface of the shell pass, wherein the tube inside of the rectangle tube bundle is equipped with the vortex sheets at uniform interval along the axial and transverse, the direction of the vortex sheet central line and the direction of the rectangle tube bundle central line is same, the rotating direction of the adjacent vortex sheet is different, the intertube in the rectangle tube bundle is equipped with the vortex sheets at uniform interval along the axial and transverse. The strengthening heat-transfer method improves the flowing speed of the heat-transfer boundary layer in dependence on the helical flow and the self vortex, which strengthens the convective heat transfer of the fluid. The vortex sheet provides the effective support and fixation function at the plate spacing for the rectangle tube bundle, which strengthens the heat-transfer of the rectangle tube bundle. The heat-changer can be used widely in the industry air heat-transfer.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a rectangular tube bundle heat exchanger supported by swirl fins. The invention also relates to a method for enhancing heat transfer of the heat exchanger. Background technique [0002] There are various types of shell-and-tube heat exchangers widely used in industry, such as the traditional shell-and-tube heat exchanger with bow-shaped baffles supporting ordinary smooth tube bundles, and the one with hollow ring screens and swirl screens to support scaling tube bundles. Enhanced heat transfer shell-and-tube heat exchangers (Chinese patents: ZL200420015378.0 and ZL200420088741.1), etc. There are also a variety of plate heat exchangers, such as flat plate heat exchangers and corrugated plate heat exchangers. [0003] The advantages of shell and tube heat exchangers are good mechanical sealing and high pressure bearing capacity. The seal between the cold and hot flow channels on the tube side a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing heat exchanger technology that the metal material consumption of the shell-and-tube heat exchanger is relatively large, while the plate heat exchanger is easy to leak, and the operating energy consumption is high, and to provide a heat exchanger suitable for high temperature, Low density, huge volume flow flue gas heat exchange between flue gas and rectangular tube bundle heat exchanger supported by swirl fins

Images