Curved face arch shape traverse baffle shell type heat exchanger

Abstract

The invention relates to a curved-surface bow-shaped folded-plate tube shell type heat exchanger. The invention comprises a heater exchanger tube. The heater exchanger tube is connected with tube plate, and is provided inside with a the tube bundle passing through a group of tube holes of the bow-shaped folded plate and are fixed between the tube plates in the way of being parallel to axis; the folded plate is evenly fixed by the drawbar and the distance-fixed tube along the axis parallelly; the drawbar and the distance-fixed tube are fixed on the tube plate, the outer side of which is connected with tube box; the bow-shaped folded plate is the curved-surface bow-shaped folded plate, the outer convex side of which is directed at the inlet of the shell-process fluid; a group of bow-shaped folded plate gaps is arranged in a staggered way at intervals from top to bottom horizontally or from left to right vertically in order to form the circuitous flow channel of the fluid inside the tube. The heat exchanger of the invention has the advantages of improving the flow-speed distribution of the shell-process fluid of the bow-shaped folded plate, effectively increasing the circulation area, reducing 'dead zone', obviously improving the efficiency of the heat exchange and reducing the drop of the pressure in comparison to the flat-plated type bow-shaped folded plate.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger, in particular to the improvement of the arcuate baffles of the shell-and-tube heat exchanger. Background technique [0002] Shell and tube heat exchangers have the advantages of high reliability, adaptability, design, manufacture and simple use, and are widely used in petrochemical, electric power, environmental protection and other industrial fields. Shell and tube heat exchangers are usually composed of tube boxes, tube sheets, shells, baffles, heat exchange tubes, tie rods, distance tubes, and process connections. Among them, in addition to supporting the tube bundle in the horizontal heat exchanger shell, the baffle also plays a role in making the fluid flow in a specific channel, increasing the flow velocity of the shell-side fluid, increasing the degree of turbulence, and improving the heat transfer characteristics. According to the shape of the heat exchanger baffle and the form of the f...

AI Technical Summary

Problems solved by technology

For example, the spiral baffle shell-and-tube heat exchanger disclosed in Chinese patent 200320106763.1 is composed of two or four fan-shaped flat plates spliced ​​into an approximate helical surface. Although this type of spiral baffle makes the fluid flow form the most reasonable, it is inferior to the bow-shaped baffle. Plate installation is difficult, processing costs are high, precision is difficult to guarantee, and it is not conducive to industrial standardization, and there is leakage in the spiral flow channel spliced ​​by multiple fan-shaped plates, which increases fluid resistance

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