A porous expansion device

Abstract

The invention discloses a porous expanded connection device for expanded connection of multiple heat exchange pipes. The porous expanded connection device comprises an expanded connection unit comprising multiple expansion heads, and a power device for driving the expanded connection unit to expand the heat exchange pipes. The porous mode can be interpreted as one row of holes at a time, multiple rows of holes at a time, one standard array unit at a time, multiple standard array units at a time, a single pipe plate surface at a time or two pipe plate surfaces at a time. When the porous expanded connection device is used, the expansion heads in the expanded connection unit are pushed into the heat exchange pipes by the power device, and the expanded connection work is carried out by the expansion heads, so that the heat exchange pipes are subjected to expanded connection at the same time. Therefore, the production efficiency is improved, the expanded connection quality is stabilized and the expanded points cannot be locally loosened.

Description

technical field [0001] The invention relates to the technical field of manufacturing shell-and-tube heat exchangers, in particular to a porous expansion joint device. Background technique [0002] Shell and tube heat exchangers can also be called shell and tube heat exchangers, and can also be called shell and tube heat exchangers. It is a partitioned wall heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. This kind of heat exchanger has a relatively simple structure, reliable operation, and can be used under high temperature and high pressure. It is the most widely used type at present. [0003] The shell-and-tube heat exchanger has at least one tube plate surface, and multiple heat exchange tubes are arranged on each tube plate surface. The heat exchange tubes on each tube plate surface are specifically divided into multiple standard arrangement units. Each standard The arrangement unit has multiple rows of heat excha...

AI Technical Summary

Problems solved by technology

[0004] During the manufacturing process of the shell-and-tube heat exchanger, the heat exchange tubes in the shell-and-tube heat exchanger need to be expanded. Now most of them are single-person, single-equipment, and single-hole cycle expansion. The expansion efficiency is low, and the single-point expansion When the hole bridge distance is small and the thickness of the tube sheet is thin, the adjacent tube sheet holes will have an impact, which will cause local loosening of the expanded heat exchange tubes

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