Anticorrosion coating device suitable for multi-variable-diameter stainless steel straight pipe

Abstract

The invention discloses an anticorrosion coating device suitable for a multi-variable-diameter stainless steel straight pipe, belongs to the field of anticorrosion of pipe inner walls, and relates toan anticorrosion coating device suitable for the multi-variable-diameter stainless steel straight pipe which comprises an inner rod. The left end of the inner rod is fixedly connected with a tractionrod, the end, away from the inner rod, of the traction rod is connected with traction equipment, the outer side of the inner rod is provided with a fixed ring, a movable ring and an elastic bag body,the fixed ring is located between the movable ring and the traction rod, the fixed ring is fixedly connected with the outer end of the inner rod, the movable ring is in sliding connection with the outer end of the inner rod, and the left end and the right end of the elastic bag body are fixedly connected with the outer end of the fixed ring and the outer end of the movable ring correspondingly. According to the diameter changes of the inner wall of the pipe, the elastic bag body is forced to deform for keeping the internal gas pressure intensity unchanged, the outer ring diameter and length ofthe elastic bag body are changed correspondingly, therefore, the coating layer is kept in the state of being in fit with the inner wall of the pipe, and anticorrosion coating for the inner wall of the multi-variable-diameter pipe is achieved.

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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