Tube pass tandem type tube and shell heat exchanger based on deep sea self-flow circulation cooling system

Abstract

The invention relates to a tube pass tandem type tube and shell heat exchanger based on a deep sea self-flow circulation cooling system. The tube pass tandem type tube and shell heat exchanger comprises a shell body, heat exchange tubes, baffle plates and tube plates. The tube plates are mounted at the two ends of the shell body separately, the multiple baffle plates are arranged in the shell body in the radial direction, mounting holes are formed in the tube plates and the baffle plates, and the multiple heat exchange tubes penetrate through the mounting holes of the baffle plates and are connected with the tube plates at the two ends of the shell body separately. The tube pass tandem type tube and shell heat exchanger further comprises water collecting chambers. The water collecting chambers are arranged on the outer sides of any tube plates. The water collecting chambers, the shell body, the heat exchange tubes, the baffle plates and the tube plates are combined to form sub heat exchangers, the adjacent sub heat exchangers are connected in series through barrel body connecting devices, and tube passes between the adjacent sub heat exchangers are connected into a whole. Sea water directly flows through the tube passes, so that the resistance loss of the sea water along the passes is reduced, the critical flow velocity point of self-flow circulation is reduced, and the self-flow circulation capacity is improved. The sub heat exchangers are connected in series through the barrel body connecting devices, and therefore the heat exchange function and the sealing reliability of the sub heat exchangers can be guaranteed.

Description

technical field [0001] The invention relates to the field, in particular to a tube-side serial shell-and-tube heat exchanger used in a deep-sea artesian circulation cooling system. Background technique [0002] As the core heat exchange component of the deep sea artesian circulation cooling system, the heat exchanger is different from the conventional land heat exchanger. Arranging the heat exchanger outboard is beneficial to its heat exchange and will inevitably make the heat exchanger withstand high seawater pressure. [0003] The application of the self-flowing circulation system puts forward higher requirements on the seawater side resistance loss of the heat exchanger. While meeting the heat exchange requirements, the heat exchanger must be designed with low seawater flow resistance in the tube side. The traditional heat exchanger is a single structure, and the heat exchange tube or pressure shell may leak under high pressure. As deep-sea equipment, the environment us...

AI Technical Summary

Problems solved by technology

In order to meet the requirements of backup and safety, the existing solution is to connect two independent heat exchangers in series or in parallel, but there are multiple tube boxes in both forms, which increases the resistance loss of seawater in the tube side

And subject to the limited side space, the parallel connection requires two sets of piping systems, which will take up too much space outside the side

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