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Sleeving method for super-long heat exchanger pipe system and shell

A heat exchanger tube and shell technology, which is applied in the field of heat exchanger manufacturing, can solve the problems of disintegration of the heat exchanger shell, difficulty in fitting, and jamming, and achieves the effect of reducing the difficulty of fitting and ensuring the quality of fitting.

Active Publication Date: 2020-11-24
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only suitable for conventional heat exchangers with a pipe length of ≤16m. It is difficult to assemble a heat exchanger with a pipe length of more than 16m. Often, it cannot be inserted, pulled out, stuck, and even causes the heat exchanger to be damaged. Risk of shell disintegration

Method used

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  • Sleeving method for super-long heat exchanger pipe system and shell
  • Sleeving method for super-long heat exchanger pipe system and shell
  • Sleeving method for super-long heat exchanger pipe system and shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one: if Figure 1-6 As shown, a method for fitting an ultra-long heat exchanger tube system and a shell involved in this embodiment, the specific steps are:

[0023] Step 1: The whole heat exchanger shell is divided into two parts, the front shell and the rear shell, and each part is welded and fixed in sequence;

[0024] Step 2: Weld the fixed pulley symmetrically at the position of the busbar on the outer surface of the shell, and the height of the fixed pulley is on the same plane as the center line of the shell;

[0025] Step 3: Insert the rear shell from the floating tube plate side of the piping system, and the fixed pulley on the outside of the rear shell is connected to the lug plate on the fixed tube plate of the piping system through the steel wire rope on the crane. The traction force is on the same level as the center line of the shell, the rear end shell is in contact with the fixed tube sheet of the piping system, and then the rear end shell is...

Embodiment 2

[0031] Embodiment two: if figure 2 As shown, this embodiment involves a method of fitting an ultra-long heat exchanger tube system and a shell, and the bypass baffle plate of the tube system is used as a slideway.

[0032] Divide the super-long shell into two sections, and use the bypass baffle of the piping system as a slideway. With the help of fixed pulleys and multiple cranes, the two large sections of shell are sequentially fitted with the piping system. Avoiding the jamming situation caused by the length of a suit being too long, and ensuring the manufacturing quality.

Embodiment 3

[0033] Embodiment three: as Figure 5-6 As shown in the example, in a method for fitting an ultra-long heat exchanger tube system and a shell according to this embodiment, the inner cone of the floating tube sheet is provided with a support pulley near the flange.

[0034] A support pulley is provided at the position where the inner cone of the floating tube sheet is close to the flange. During the assembly process, the floating tube sheet and the shell are guaranteed to have rolling friction, reducing resistance and avoiding the risk of insufficient output of the tractor.

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Abstract

The invention provides a sleeving method for a super-long heat exchanger pipe system and a shell, and belongs to the field of heat exchanger manufacturing. The whole heat exchanger shell is divided into a front end shell body and a rear end shell body, and all the parts are sequentially welded and fixed; fixed pulleys are symmetrically welded to the generatrix position of the outer surface of theshell, and the heights of the fixed pulleys and the center line of the shell are on the same plane; the rear end shell body is sleeved from the floating pipe plate side of the pipe system, the fixed pulley on the outer side of the rear end shell body is connected with a lug plate on a fixing pipe plate of the pipe system through a steel wire rope on a crane, it is guaranteed that the traction force of the steel wire rope and the center line of the shell are located on the same horizontal plane in the sleeving process, the rear end shell body makes contact with the fixing pipe plate of the pipesystem, and the rear end shell body is connected with the fixed pipe plate of the pipe system; and the front end shell body is sleeved from the floating pipe plate side of the pipe system, and the front end shell body and the rear end shell body are in contact and are welded. According to the sleeving method for the super-long heat exchanger pipe system and the shell, sleeving of the super-long heat exchanger is changed into sleeving of two conventional heat exchanger pipe systems, the sleeving difficulty is greatly reduced, and the sleeving quality is guaranteed.

Description

technical field [0001] The invention relates to a method for fitting an ultra-long heat exchanger pipe system and a casing, and belongs to the field of heat exchanger manufacturing. Background technique [0002] In the manufacturing process of petrochemical container heat exchanger products, the process of piping and shell fitting is the key difficulty in the manufacture of heat exchangers. At present, the assembly of heat exchanger tube system and shell adopts the way of integral package. This method is only suitable for conventional heat exchangers with pipe lengths ≤ 16m. For heat exchangers with pipe lengths greater than 16m, it is difficult to assemble the heat exchanger as a whole. Often, it cannot be inserted, pulled out, stuck, and even causes the heat exchanger to be damaged. Risk of housing disintegration. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems in the prior art, and further provide a meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F9/26B21D53/06
CPCF28F9/264B21D53/06
Inventor 王新红张怡斌王立昆窦炳程
Owner HARBIN BOILER