Pipe shell type heat-exchanger

Abstract

It relates to a tubular shell heat exchanger that comprises the shell, baffle plate connected inside of the shell, and the heat exchanging pipe, features in the plate of the baffle plate with holes, surrounding of the baffle plate having flange folds, with improved heat exchanging effect, improved baffle plate effect, ensuring the performance of the product and reduced in product design cost.

Description

Technical field: [0001] The invention relates to a shell-and-tube heat exchanger, which belongs to the technical field of heat exchangers. Background technique: [0002] In the current shell-and-tube heat exchanger, in order to increase the flow rate of the fluid in the space outside the heat exchange tube, to improve its heat supply and improve the heat transfer effect of the shell-and-tube heat exchanger, it is necessary to install multiple folded pieces at intervals in the cylinder. Flow plate, in the manufacturing process, the cylinder, heat exchange tube, baffle diameter or aperture can not be idealized only one size, there are manufacturing errors, there is a certain difference between the minimum diameter and the maximum diameter, and in order to realize The baffles can be installed into the cylinder, and the heat exchange tubes can pass through the tube sheet and each baffle smoothly. Usually, the baffles are slightly smaller than the minimum inner diameter of the cy...

AI Technical Summary

Problems solved by technology

[0002] In the current shell-and-tube heat exchanger, in order to increase the flow rate of the fluid in the space outside the heat exchange tube, to improve its heat supply and improve the heat transfer effect of the shell-and-tube heat exchanger, it is necessary to install multiple folded pieces at intervals in the cylinder. Flow plate, in the manufacturing process, the cylinder, heat exchange tube, baffle diameter or aperture can not be idealized only one size, there are manufacturing errors, there is a certain difference between the minimum diameter and the maximum diameter, and in order to realize The baffles can be installed into the cylinder, and the heat exchange tubes can pass through the tube sheet and each baffle smoothly. Usually, the baffles are slightly smaller than the minimum inner diameter of the cylinder, and the hole ratio of the baffles is changed. The maximum outer diameter of the heat pipe is slightly larger. Therefore, there must be gaps between the commonly used baffles and the heat exchange tubes, and between the cylinder body, resulting in an excessively large gap between the baffle tube holes and the heat exchange tubes and baffles. Excessive gap between the plate and the shell will cause a large amount of leakage, which will affect the baffle effect, heat transfer effect and product performance

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