Anti-corrosion heat exchanger

Abstract

The invention discloses an anti-corrosion heat exchanger, belongs to the field of heat exchangers, and aims to solve the problems that when a heat exchange tube of the anti-corrosion heat exchanger works normally, high-temperature fluid can cause local corrosion to a lining tube at the moment, the local structural strength of the lining tube is reduced, at the moment, under the action of contraction net individuals, the corroded part is torn off from the lining tube, and the corrosion resistance of the lining tube is reduced. Meanwhile, due to the fact that the compensation pad can automatically fill the defects, wrap and protect the torn position of the lining pipe and slow down further diffusion of corrosion, the corrosion falling objects move along with the high-temperature fluid, fall into the shell under the adsorption effect of the magnetic piston and push the magnetic piston to move downwards, and the corrosion falling objects are prevented from falling off. Therefore, the influence of the corrosion of the inner wall of the heat exchange tube on the work of the heat exchange tube can be reduced, and the overall work of the heat exchanger is easy to maintain.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to an anti-corrosion heat exchanger. Background technique [0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used . [0003] Shell-and-tube heat exchangers are mainly composed of shells, tube bundles, tube sheets, and heads. The shells are mostly circular, and parallel tube bundles or spiral tubes are installed inside. board. Two fluids that exchange heat in the shell-and-tube heat exchanger, one flows in the tube, and its stroke is called the tube side; the other flows outside the tube, and its stroke is called the shell side. The wall of the tube bundle i...

AI Technical Summary

Problems solved by technology

[0004] During the use of the heat exchanger, because the tube bundle will be washed by high-temperature fluid for a long time, it is very easy to cause corrosion on the inner wall of the tube bundle. Once the inner wall of the tube bundle is corroded, its fluffy state will easily cause rapid expansion of corrosion, and then cause the entire tube bundle to corrode. The damage affects the normal use of the heat exchanger. Due to its poor thermal conductivity, some corroded oxides also cause a large amount of heat accumulation in the heat exchanger tube bundle, which greatly reduces the working efficiency of the heat exchanger.

Images