Heat exchanger

Abstract

The invention discloses a heat exchanger. The heat exchanger comprises a U-shaped pipe shell type heat exchange part and a steam pocket. The steam pocket is arranged above the U-shaped pipe shell type heat exchange part and provide with a steam outlet and a liquid phase inlet. The U-shaped pipe shell type heat exchange part comprises a U-shaped outer pipe and a U-shaped heat exchange pipe arranged in the U-shaped outer pipe in a sleeved mode. The steam pocket communicates with the U-shaped outer pipe through ascending pipes and descending pipes. The heat exchanger has the advantages of being simple in structure, low in manufacturing cost and high in heat exchange efficiency and anti-interference capacity.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a shell-and-tube heat exchanger with a U-shaped shell. Background technique [0002] Heat exchanger is a general-purpose equipment widely used in chemical industry, petrochemical industry, energy power, medicine, metallurgy, refrigeration, light industry and other industries. As a traditional standard heat exchange equipment, shell and tube heat exchangers are widely used in many industrial sectors, especially in chemical, petroleum, energy, electric power and other industries. They are easy to manufacture, low in production cost, Wide range of material selection, easy cleaning, strong adaptability, reliable operation and so on. However, for the working conditions with large heat transfer temperature difference, especially the traditional U-shaped tube heat exchanger, because the tube sheet is in contact with the inlet and outlet fluid at the same time, part of the same side of the tube she...

AI Technical Summary

Problems solved by technology

However, for the working conditions with large heat transfer temperature difference, especially the traditional U-shaped tube heat exchanger, because the tube sheet is in contact with the inlet and outlet fluids at the same time, part of the same side of the tube sheet is in contact with high-temperature medium, and part of it is in contact with low-temperature medium. The stress of the tube sheet is relatively large, and the design of the tube sheet is complicated

[0003] The traditional heat exchanger adopts a kettle-type structure. The liquid generally enters the shell side from the liquid phase inlet at the bottom of the shell, and flows out from the steam outlet at the top of the shell. Since the liquid evaporates on the shell side, a large space is required for liquid evaporation, so the shell It is often designed as a cylinder with a large volume, which results in a large volume of heat exchanger and many consumables, and due to the large space, the flow rate of the liquid phase in the shell side is slow, resulting in poor heat transfer effect and increasing material costs to a certain extent , resulting in waste of resources and other issues

Images