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Device capable of eliminating internal stress and microcracks of extruded graphite pipe

A technology of micro-cracks and internal stress, applied in the field of chemical materials, can solve the problems of short service life and micro-leakage during use of graphite tube heat exchangers, and achieve the elimination of internal stress and micro-cracks, impact resistance and anti-leakage Effects of performance improvement and service life extension

Inactive Publication Date: 2014-10-01
龚孝祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device for eliminating extrusion internal stress and micro-cracks, so as to solve technical problems such as short service life and frequent micro-leakage of graphite tube heat exchangers produced in the prior art.

Method used

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  • Device capable of eliminating internal stress and microcracks of extruded graphite pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The vacuum pump 1 is connected to the horizontal impregnation kettle 8 through the first pipeline 2, the first valve 3 and the second valve 5, the resin tank 4 is connected to the horizontal impregnation kettle 8 through the second pipeline 7 and the third valve 6, and the pressurization device 9 is connected to the horizontal impregnation tank 8 through the fourth valve 21, the fourth pipeline 27, the third pipeline 10 and the second valve 5, and the pressurizing device 9 is connected to the Horizontal heat treatment kettle 17 is connected, and heater 32 is arranged on horizontal heat treatment kettle 17.

[0022] Both ends of the horizontal impregnation kettle 8 are equipped with heads 15, which are placed on the saddle 16. The length of the horizontal impregnation kettle 8 is 5000mm, the diameter is Ф600, the thickness of the cylinder is 8mm, the first safety valve 14, the first pressure gauge 12. The first emptying valve 13 and the thermometer 11 are connected to th...

Embodiment 2

[0032] The vacuum pump 1 is connected to the horizontal impregnation kettle 8 through the first pipeline 2, the first valve 3 and the second valve 5, the resin tank 4 is connected to the horizontal impregnation kettle 8 through the second pipeline 7 and the third valve 6, and the pressurization device 9 is connected to the horizontal impregnation tank 8 through the fourth valve 21, the fourth pipeline 27, the third pipeline 10 and the second valve 5, and the pressurizing device 9 is connected to the Horizontal heat treatment kettle 17 is connected, and heater 32 is arranged on horizontal heat treatment kettle 17.

[0033] Both ends of the horizontal impregnation kettle 8 are equipped with heads 15, which are placed on the saddle 16. The length of the horizontal impregnation kettle 8 is 6000mm, the diameter is Ф800, and the thickness of the cylinder is 10mm. The first safety valve 14 and the first pressure gauge 12. The first emptying valve 13 and the thermometer 11 are connect...

Embodiment 3

[0043] The vacuum pump 1 is connected to the horizontal impregnation kettle 8 through the first pipeline 2, the first valve 3 and the second valve 5, the resin tank 4 is connected to the horizontal impregnation kettle 8 through the second pipeline 7 and the third valve 6, and the pressurization device 9 is connected to the horizontal impregnation tank 8 through the fourth valve 21, the fourth pipeline 27, the third pipeline 10 and the second valve 5, and the pressurizing device 9 is connected to the The horizontal heat treatment kettle 17 is connected, and a heater 32 is arranged on the horizontal heat treatment kettle.

[0044]Both ends of the horizontal impregnation kettle 8 are equipped with heads 15, which are placed on the saddle 16. The length of the horizontal impregnation kettle 8 is 7000 mm, the diameter is Ф1000, and the thickness of the cylinder is 14 mm. The first safety valve 14 and the first pressure gauge 12. The first emptying valve 13 and the thermometer 11 ar...

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Abstract

The invention discloses a device capable of eliminating the internal stress and microcracks of an extruded graphite pipe. According to the device, a vacuum pump (1) is connected with a horizontal immersion kettle (8) by virtue of a first pipeline (2), a first valve (3) and a second valve (5), a resin tank (4) is connected with the horizontal immersion kettle (8) by virtue of a second pipeline (7) and a third valve (6), the pressurizing device (9) is simultaneously connected with the horizontal immersion kettle (8) and a horizontal heat treatment kettle (17) and a heater (32) is arranged on the horizontal heat treatment kettle. Compared with the prior art, the device disclosed by the invention has the advantages that when the graphite pipe is produced by virtue of the device, the internal stress and microcracks of the extruded graphite pipe can be effectively eliminated and thus the service life of the extruded graphite pipe is prolonged and safety and environmental incidents caused by the contamination and leakage of materials and a circulation water system for carrying out hot exchange are avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, in particular to a device for eliminating extrusion internal stress and microcracks. Background technique [0002] In chemical production, the graphite tubes used in the existing graphite tube heat exchangers are usually extruded by a hydraulic press and then stacked in the open air for more than 6 months to eliminate internal stress. There is no graphite tube impregnation and heat treatment process. Therefore, there is no graphite tube impregnation and heat treatment device. Graphite tubes produced without graphite tube impregnation and heat treatment have the following disadvantages: 1. Long stacking time, large space occupation, and large production costs; Graphite tube heat exchangers have a short service life, causing huge parking losses and increased maintenance costs for users; 3. Microcracks generated during the extrusion process of graphite tubes cannot be eliminated, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/48C04B41/00
Inventor 龚孝祥
Owner 龚孝祥
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