An anti-corrosion coating device suitable for stainless steel straight pipes with multiple variable diameters

Abstract

The invention discloses an anti-corrosion coating device suitable for stainless steel straight pipes with multiple variable diameters, which belongs to the field of pipe inner wall anti-corrosion. An anti-corrosion coating device suitable for stainless steel straight pipes with multiple variable diameters includes an inner rod and the left end of the inner rod A traction rod is fixedly connected, and the end of the traction rod away from the inner rod is connected to the traction equipment. The outer side of the inner rod is provided with a fixed ring, a moving ring and an elastic capsule. The fixed ring is located between the moving ring and the draw rod. The fixed ring and the inner rod The outer end of the inner rod is fixedly connected, the moving ring is slidingly connected to the outer end of the inner rod, and the left and right ends of the elastic capsule are respectively fixedly connected to the outer ends of the fixed ring and the moving ring. In order to keep the internal gas pressure constant, the capsule deforms accordingly, so that the diameter and length of the outer ring of the elastic capsule change accordingly, so that the coating layer remains in a state of bonding with the inner wall of the pipe, and realizes the changeable Anti-corrosion coating on the inner wall of diameter pipes.

Description

technical field [0001] The invention relates to the field of anti-corrosion of the inner wall of pipes, and more specifically relates to an anti-corrosion coating device suitable for stainless steel straight pipes with multiple variable diameters. Background technique [0002] Pipe anticorrosion refers to the chemical reaction of steel pipes in use and transportation due to the influence of the use environment and the transmission medium, resulting in corrosion. Corrosion will cause great damage to metal pipes, because no matter how good the external coating is and how advanced the external anti-corrosion technology is, if the internal anti-corrosion is not carried out, it will cause corrosion and be scrapped prematurely. However, internal corrosion is concealed, and its existence is often ignored by people. At the same time, due to the particularity of the conveying medium, the internal corrosion of the pipe is very serious, even far exceeding the external corrosion. Stat...

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Problems solved by technology

[0004] However, for pipes with multiple variable diameters, since the diameter of the pipes is not a fixed value and is in an irregular state of change, the above spraying methods are difficult to apply to pipes with multiple variable diameters. It is a big problem in the existing technology

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