Welded plate type heat exchanger

Abstract

The invention discloses a welded plate type heat exchanger. The welded plate type heat exchanger comprises a plate bundle core, a shell wrapping the plate bundle core and a fluid inlet and outlet connecting pipe arranged on the shell. The plate bundle core is round, the shell is a combined cylinder body coaxial with the plate bundle core, and the combined cylinder body is composed of a top plate, a bottom plate, a plurality of stand columns and a plurality of cover plates with the same radian. The upper ends and the lower ends of the stand columns are detachably connected with the top plate and the bottom plate to form a combined cylinder body framework after the stand columns are symmetrically placed. The upper and lower ends of the multiple cover plates with the same radian are detachably connected with the top plate and the bottom plate, and the left and right side edges of the cover plates are detachably connected with the stand columns to form a pressure-bearing sealed cavity wrapping the plate bundle core. Compared with the prior art, the welded plate type heat exchanger is better in temperature resistance and pressure resistance, and the plate bundle core is easy to clean, overhaul and replace; and meanwhile, the pressure-bearing shell of the heat exchanger is formed by using relatively few materials, and the novel welded plate type heat exchanger has good application and popularization prospects.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a welded plate heat exchanger. Background technique [0002] The plate heat exchanger has high heat exchange efficiency, compact and light structure, and a small footprint. Under the same pressure loss, its heat transfer coefficient is 3-5 times higher than that of the tube heat exchanger, and the floor space is less than that of the tube heat exchanger. One-third of the device, the heat recovery rate can be as high as more than 90%, which is an ideal equipment for heat exchange. Many different types of plate heat exchangers are widely used in oil refining, chemical industry, and water treatment. Among them, the welded plate heat exchanger developed to adapt to high temperature and high pressure and facilitate regular cleaning and maintenance will further expand the plate heat exchanger. field of application. [0003] Some types of plate heat exchangers now have...

AI Technical Summary

Problems solved by technology

However, the pressure bearing performance of the box-shaped envelope is weaker than that of the cylindrical sealed shell. In the application, the four flat cover plates are relatively thick, accounting for more than 60% of the weight of the entire heat exchanger, which greatly increases the heat transfer. The total weight and overall cost of the device, reducing the economical

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