Grill bearing baffler of shell-and-tube heat exchanger

Abstract

The present invention discloses a shell-and-tube heat exchanger grille support baffle device. It includes heat exchange tube and heat exchanger shell body, also includes grille and limited ring. The described grille is one which is formed from two gralled plates which are staggered at 90deg. and alternatively arranged and has four curved fasteners and eight supporting points. The described heat exchange tube is fastened and supported by said grille, so that the strength and rigidity of the heat exchange tube can be greatly raised, and the heat exchange efficiency of the heat exchanger also is raised.

Description

Technical field [0001] The invention relates to heat exchange equipment technology, in particular to a shell-and-tube heat exchanger grid supporting baffle device. Background technique [0002] Shell-and-tube heat exchangers are heat exchange equipment widely used in chemical, petrochemical, refrigeration, power, metallurgy, pharmaceutical and other industries. In order to improve the heat exchange efficiency of the equipment, people have conducted extensive and in-depth research on heat exchange tubes. A variety of high-efficiency heat exchange tubes have been commercialized. They are widely used in phase change heat transfer enhancement, non-phase change heat transfer enhancement, gas, Heat exchange processes such as liquid and solid three-phase flow. As a kind of heat exchange equipment, it is not enough to solve the efficiency of heat exchange tubes. Therefore, there is research on heat transfer enhancement in the shell side. The shell side support and baffle devices are suit...

AI Technical Summary

Problems solved by technology

[0004] In my country's metallurgical industry, the annual output of the electric zinc acid production system exceeds 100kt. The shell side DN of the heat exchanger of the production system conversion heat exchange equipment is usually more than 2 meters. The process gas contains a large amount of dust and other impurities, and there is acid at low temperature. Water precipitation and dust contact to form acid mud, which causes dust and scale on the support baffle plate of the transfer heat exchanger, accelerates the corrosion of the heat exchange tube and reduces the heat transfer efficiency

The shell-side support structure of baffle rods avoids and reduces the extent of shell-side fouling and fouling, and realizes the pure countercurrent operation of a single shell side. It has the characteristics of high heat transfer efficiency and small fluid resistance, but with the output of production equipment Increase, under the standard tube spacing, with the increase of the shell diameter, the rigidity and strength of the baffle rod are obviously reduced, especially in the horizontal shell-and-tube heat exchanger, the load-bearing is a fatal weakness and a hidden danger in transportation

If the wire diameter of the baffle rods is increased, it will inevitably lead to an increase in the shell diameter of the heat exchanger and an increase in equipment costs. A single heat exchange tube in a single-row baffle rod device has only two supporting points, and two adjacent units only have two supporting points. The four fulcrums inevitably have tube vibration in large-diameter shell-and-tube heat exchangers, especially in horizontal heat exchangers, which may cause resonance, which seriously affects the long-term operation of the heat exchanger and the service life of the equipment

Images