High-efficiency shell-and-tube heat exchanger and manufacturing method thereof

Abstract

The invention discloses an efficient shell tube type heat exchanger and a manufacturing method of the heat exchanger. Gaseous refrigerants of an upper layer heat exchange tube surface of the heat exchanger are cooled to liquid, and the liquid is dropped and poured to a lower layer heat exchange tube surface level by level from the upper layer heat exchange tube surface, and then dropped and poured to a dropping and pouring prevention partition plate, it is ensured that a lower layer heat exchange tube cannot be dropped and poured by liquid-state refrigerants of an upper layer heat exchange tube, the contact area of the lower layer heat exchange tube and the gaseous refrigerants is increased, heat resistance is reduced, and the heat exchange effect is improved; the refrigerants are located outside a heat exchange tube to flow, cooling water is located in the heat exchange tube to flow, but, the flowing direction of the cooling water is reverse, backward flowing of two strands of fluid of the refrigerants and the cooling water can be achieved, the surface heat exchange coefficient of the heat exchange tube is improved, the heat exchange effect is improved, and the heat exchange performance of the reverse flow shell type heat exchanger is greatly improved. Compared with a traditional shell tube type heat exchanger, the phenomenon that the liquid-state refrigerants of the surface of the heat exchange tube are dropped and poured to the position between tube layers, and heat exchange is affected is avoided, the reverse flow heat exchange of two kinds of heat exchange fluid of a shell side and a tube side is achieved, the heat exchange coefficient is higher, the heat exchange temperature difference is more uniform, materials are saved, and meanwhile, the energy efficiency ratio is improved.

Description

technical field [0001] The invention relates to the technical field of shell-and-tube heat exchangers, in particular to a high-efficiency shell-and-tube heat exchanger and a manufacturing method thereof. Background technique [0002] At present, in the refrigeration equipment of air conditioners or chillers, shell-and-tube heat exchangers are often applied. The refrigerant is passed into the shell side, and the cooling water is passed into the tube side. The high-temperature and high-pressure refrigerant gas enters the heat exchanger and fills the heat exchanger. In the inner space of the shell, the cooling water flows in the heat exchange tube through the tube side, and the two fluids transfer heat through the tube wall of the heat exchange tube to perform heat exchange. heat process. [0003] However, there are many heat exchange tubes inside the traditional shell and tube heat exchanger, and the gas refrigerant on the surface of the upper heat exchange tube is cooled int...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high-efficiency shell-and-tube heat exchanger and its manufacturing method, aiming to solve the problems of poor overall heat exchange efficiency, large thermal area, and waste of heat exchange tubes and heat exchanger materials in traditional shell-and-tube heat exchangers. question

Images