Online repairing device and method for inner wall of circular hole

Abstract

The invention discloses an on-line repairing device and method for the inner wall of a circular hole. The on-line repairing device is connected to a hole part to be repaired and comprises a cutter body capable of stretching into the circular hole of the hole part in a telescopic mode. The cutter body rotates around the axis of the circular hole and cuts and repairs the inner wall of the circular hole of the hole part. The repairing device has the advantages of no need of forcible entry of parts, capability of realizing on-line on-site repairing, high repairing efficiency and the like. The repairing method also has the advantages, meanwhile, the steps are simple, operation is convenient, and on-site rapid repairing can be achieved.

Description

technical field [0001] The invention relates to the technical field of component repair, in particular to an online repair device and method for the inner wall of a circular hole. Background technique [0002] The actual production equipment contains many large tanks (including pressure vessels) and large steel structural parts. These large equipment need to be connected with peripheral equipment, so there are hole parts connected with peripheral equipment. During use, these holes will Due to repeated disassembly and assembly or hinge joint wear and tear in advance, it will cause problems such as excessive clearance, seal failure and leakage, and eventually even lead to the failure of the entire large-scale equipment. Therefore, it is necessary to repair the wear or deformation of these holes to obtain good sealing performance and fit. gap. [0003] However, the existing routine maintenance method is: stop the equipment, remove the damaged parts from the equipment, and use ...

AI Technical Summary

Problems solved by technology

[0004] Since these large tanks or large steel structures are often connected with many external equipment and pipelines, usually these connections are assembled on site when the equipment is installed. Therefore, the existing problems are: 1. It takes a long time to remove the parts, which makes the device body and other devices connected to it unable to work for a long time; 2. Due to the change of shape and position after being removed for a long time, some interfaces often do not match when they are reinstalled; 3. Some connecting parts, equipment parts and even the height of the factory building directly block the part to be repaired, making hoisting difficult; 4. Because it is a large tank body and a large steel structure, it is difficult to find a large enough processing equipment nearby, and the cost is high. Long; 5. Because some large tanks are pressure vessels, they cannot be dismantled or disassembled for maintenance. Therefore, conventional maintenance methods cause huge waste to enterprises.

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