Tube bundle sleeving method of two folding coiled tube high-pressure heater

Abstract

The invention relates to the technical field of manufacturing of pressure containers, and discloses a tube bundle sleeving method of a two folding coiled tube high-pressure heater. The method comprises the following steps that S1, a shell of the heater is divided into a shell a and a shell b according to positions corresponding to a header end and a tube bundle end of a coiled tube in a sleeving arrangement mode; S2, the shell a is sleeved from the outer end of the header end to the middle of the header end, and the position of the shell a is fixed; S3, the shell a and the header end are connected into an assembly; S4, the assembly formed through connection in the step S3 serves as a fulcrum, the shell b is sleeved from the outer end of the tube bundle end to the middle of the tube bundleend, and a circular seam is formed between the shell a and the shell b; and S5, assembling and welding the circular seam between the shell a and the shell b. The shell of the heater is divided into the shell a and the shell b corresponding to the header end and the tube bundle end respectively, and the shell a and the shell b are sleeved with the tube bundle from the outer ends correspondingly andthen welded to the tube bundle, so that the problem that pre-welded parts such as angle steel and steel plates inside the shell of the heater interfere with the tube bundle and a header in the coiledtube bundle sleeving process is solved.

Description

technical field [0001] The invention relates to the technical field of pressure vessel manufacturing, in particular to a tube bundle fitting method for a two-fold serpentine tube high-pressure heater. Background technique [0002] The serpentine tube header high-pressure heater for a pressure vessel manufactured by our company has a two-fold structure. The two headers are located at the same end, and one of the headers is located at the eccentric position of the heater shell. In the manufacturing process of conventional heat exchangers, the shell and the tube bundle are generally assembled and welded into components separately, and then integrated as a whole. As for the two-fold serpentine tube header-type high-pressure heater, this overall package method has the following problems: because the inside of the heater shell is welded with pre-welded parts such as angle steel and steel plate, and the side of the header is welded with a cladding For example, when using the conve...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: the present invention provides a tube bundle fitting method for a two-fold serpentine tube high-pressure heater. Interference between angle steel, steel plate and other pre-welded parts inside the medium heater shell and tube bundles and headers

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