Vacuum pumping micro-leak repair method

Abstract

The invention relates to a method for repairing slight leakage by vacuumizing; the method is characterized in that one surface of the article to be repaired is vacuumized and the opposite surface thereof is coated by colorant; whether slight leakage occurs to the article or not is checked; after the position where the slight leakage occurs is determined, the opposite surface of the position of the article is coated by liquid colloid and vacuumized so as to lead the liquid colloid to be sucked into the slight leaked position; and after the liquid colloid is naturally solidified, the repairing of on the slight leakage is completed. The method overcomes the shortages that the detection is inaccurate and the detection time is long when magnifier detection, light penetration detection, kerosene permeability detection, X-ray detection and the like which are normally used in the prior art are carried out, can quickly and exactly penetrate the colloid into the micro-crack inside the leaked position, has dual-layer protection effect, greatly improves the repairing effect and prolongs the service life.

Description

technical field [0001] The invention relates to the technique of repairing microleakage, in particular to a method for repairing microleakage by vacuuming. Background technique [0002] In order to prevent oil tanks, gas cylinders, pipelines, etc. from leaking during the storage and transportation of liquids and gases, which will cause fires, pollute the environment, poison lives and other accidents, it is necessary to test and repair oil tanks, gas cylinders, pipelines, pressure vessels, etc. Be safe. [0003] So far, the methods for detecting microleakage include magnifying glass detection, light transmission detection, kerosene penetration detection and X-ray detection, etc. Among them, magnifying glass detection and light transmission detection can only detect linear microleakage, but cannot detect non-linear microleakage; kerosene Although penetrant testing and X-ray testing can detect non-linear micro leaks, they take a long time and have low sensitivity. The methods...

AI Technical Summary

Problems solved by technology

[0003] So far, the methods for detecting microleakage include magnifying glass detection, light transmission detection, kerosene penetration detection and X-ray detection, etc. Among them, magnifying glass detection and light transmission detection can only detect linear microleakage, but cannot detect non-linear microleakage; kerosene Penetration testing and X-ray testing can detect non-linear micro-leakage, but the time is long and the sensitivity is low

The methods for repairing micro-leakage include glue application and repair welding, etc. Among them, glue application can only form a layer of glue film on the surface of the object, which cannot penetrate into the fine parts inside the object. Once the surface is aged or collided, it is easy to fall off, and repair welding Repairing microleakage not only affects the quality of the weld, but also easily causes cracks in other parts of the weld

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