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A method of fitting super-long heat exchanger tubes and shells

A heat exchanger tube and shell technology, applied in the field of heat exchanger manufacturing, can solve the problems of heat exchanger shell disintegration, difficulty in assembling, and inability to pull out, so as to ensure the quality of assembling and reduce the difficulty of assembling

Active Publication Date: 2022-02-15
HARBIN BOILER CO LTD
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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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  • A method of fitting super-long heat exchanger tubes and shells
  • A method of fitting super-long heat exchanger tubes and shells
  • A method of fitting super-long heat exchanger tubes and shells

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 method for fitting an ultra-long heat exchanger tube system and a shell, and belongs to the field of heat exchanger manufacturing. In the present invention, the heat exchanger shell is divided into two parts, the front shell and the rear shell, and each part is welded and fixed in sequence; the fixed pulley is welded symmetrically to the position of the busbar on the outer surface of the shell, and the height of the fixed pulley is the same as the center line of the shell. On a plane; 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 wire rope on the crane. Ensure that the traction force of the wire rope is on the same level as the centerline of the shell, the rear end shell is in contact with the fixed tube plate of the piping system, and then the rear end shell is connected with the fixed tube plate of the piping system; The side of the floating tube sheet is inserted, and the front shell is in contact with the rear shell and welded. In the present invention, the suit of the super-long heat exchanger is changed into the suit of two conventional heat exchanger pipe systems, which greatly reduces the difficulty of the suit and ensures the quality of the suit.

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 Patents(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 CO LTD