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Method for repairing tube plate of graphite heat exchanger

A technology of graphite heat exchanger and tube sheet, which is applied in the direction of heat exchanger shell, heat exchange equipment, lighting and heating equipment, etc. It can solve the problems of long heat treatment cycle and inconvenient heat treatment at the bonding place, and achieve fast time, The effect of high repair strength and improved work efficiency

Inactive Publication Date: 2012-12-05
NANTONG SANXIN CARBON GRAPHITE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In traditional tube-and-tube graphite heat exchangers, graphite tube cracks or tube sheet damage are all repaired by bonding: in this method, it is inconvenient to conduct heat treatment at the joint after bonding, and even if heat treatment can be performed, the heat treatment cycle is relatively short. long

Method used

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0011] A method for repairing graphite heat exchanger tube sheets, comprising the following steps:

[0012] 1. Ream the hole at the position of the original tube plate hole, make threads in the tube plate hole where the hole has been reamed, and set a boss at the bottom of the tube plate hole;

[0013] 2. Put a graphite nylon gasket around the above boss;

[0014] 3. Manufacture screws that match the threads in the tube plate holes;

[0015] 4. Screw the screw into the tube plate hole and press the graphite nylon gasket to seal

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Abstract

The invention discloses a method for repairing a tube plate of a graphite heat exchanger. An original tube plate hole is enlarged, threads are formed in the tube plate hole which is enlarged, a boss is arranged at the bottom of the tube plate hole, a graphite nylon gasket is sleeved at the periphery of the boss, a screw which is matched with the threads in the tube plate hole is processed, and the screw is screwed into the tube plate hole and compresses the graphite nylon gasket for sealing. Compared with the conventional adhesion repair method, the method for repairing the tube plate of the graphite heat exchanger by using thread plug holes is high in strength and short in time, and facilitates production quick recovery of equipment, so working efficiency is improved.

Description

technical field [0001] The invention relates to a graphite heat exchanger, in particular to a repair method for a graphite heat exchanger tube plate. Background technique [0002] In traditional tube-and-tube graphite heat exchangers, graphite tube cracks or tube sheet damage are all repaired by bonding: in this method, it is inconvenient to conduct heat treatment at the joint after bonding, and even if heat treatment can be performed, the heat treatment cycle is relatively short. long. According to the national standard, the cement bonding of graphite must be heat-treated, otherwise the bonding strength will not meet the requirements. Contents of the invention [0003] Purpose of the invention: In order to solve the deficiencies of the prior art, the present invention provides a repairing method for graphite heat exchanger tube sheets with high repair strength, which is beneficial to quickly restore the equipment to production. [0004] Technical solution: a method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F9/013
Inventor 唐正勇黄晓东陆艺曹蓉蓉
Owner NANTONG SANXIN CARBON GRAPHITE EQUIP