Heat exchanger and heat exchange enhancement method

Abstract

The invention relates to the technical field of heat exchange, and discloses a heat exchanger and a heat exchange enhancement method. The heat exchanger comprises a shell side cylinder, tube plates, a tube bundle and baffling grating plates, wherein the tube plates, the tube bundle and the baffling grating plates are installed in the shell side cylinder. The tube bundle penetrates through the baffling grating plates and is fixedly connected with the tube plates at the two ends of the tube bundle, the sections of tubes of the tube bundle are of a polygonal structure, the edges of the tubes of the polygonal structure are chamfered, the baffling grating plates and the tube plates are respectively provided with installation holes and fixing holes, the installation holes and the fixing holes are matched with the tubes in shape, the baffling grating plates are arranged in parallel in the tube side direction, and arch-shaped gratings of the adjacent baffling grating plates are distributed in a staggered mode. When fluid in a shell side flows through the gratings of the baffling grating plates, Karman vortexes are formed, and resistance of the fluid is little during spin flowing, so that flowing speed of a boundary layer is increased, convective heat transfer of the fluid is effectively enhanced, cleaning dead corners do not exist on inner walls of the tubes, and the tubes are easy to clean. Gaps among the tubes of the tube bundle are similar to rectangles, the Venturi effect is achieved, and the heat exchange effect is greatly improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a heat exchanger and a method for enhancing heat exchange. Background technique [0002] Petrochemical, pharmaceutical and other industries are vigorously developing large-capacity, high-performance heat transfer equipment, and have special requirements for the size and weight of heat transfer equipment. Especially in the pharmaceutical industry, there is a need for miniaturized heat exchanger equipment that is easy to clean and clean, conforms to industry standards, has a small volume, and has a large heat transfer area per unit volume, so as to meet the product quality management, clean production and environmental protection requirements of the pharmaceutical industry. At present, heat exchangers suitable for petrochemical, pharmaceutical and other industries generally include shell-and-tube heat exchangers and plate heat exchangers. [0003] Shell-and-tube heat exchang...

AI Technical Summary

Problems solved by technology

The width of this rectangular tube bundle is different, the width and thickness of a single rectangular tube are not equal, and it is filled with swirl sheets, there are dead corners, cleaning is difficult, large-scale manufacturing and installation are complicated, and it is not suitable for use under pressure-resistant conditions.

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