One-time forming device for corrosion preventing of interior of steel pipeline

Abstract

The invention discloses a one-time forming device for corrosion preventing of the interior of a steel pipeline. The one-time forming device comprises a coating mechanism and a traction mechanism. The coating mechanism comprises a charging pipe, a coating and extruding ball and a painting limiting ball, and the coating and extruding ball and the painting limiting ball are arranged in the charging pipe and connected. A charging cavity is formed between the coating and extruding ball and the painting limiting ball. The charging pipe is connected to one end of a coated pipeline and is consistent to the coated pipeline in inner diameter. The traction mechanism penetrates the other port of the coated pipeline through a traction rope till the traction mechanism is connected with the painting limiting ball. The coating mechanism further comprises an even coating device arranged in the charging pipe, and the even coating device is a rotating brushwork device connected to the coating and extruding ball. The one-time forming device is short in construction period, the technology is easy to achieve, cost is low, and the defects that according to an original corrosion preventing technology, repaired mouths are excessive, and the overall corrosion preventing effect of the pipeline is hard to guarantee are avoided. The service life of the pipeline is prolonged, the construction efficiency is improved, and economic and social benefits are obvious.

Description

technical field [0001] The invention relates to oil and natural gas ground technology, in particular to a one-time anti-corrosion forming device for steel pipelines. Background technique [0002] In the process of oil field development, the medium transported by pipelines in many blocks contains various corrosive substances, and some blocks even contain highly corrosive acidic substances, resulting in serious corrosion inside the pipeline, affecting the service life of the pipeline, causing oil wells to stop production, and the environment pollution, personal injury, etc. Internal anticorrosion of pipelines is an effective way to solve the current corrosion and aging of pipelines. [0003] In the past, the internal anti-corrosion of pipelines in the Hekou Oil Production Plant usually used the method of prefabrication in the factory and on-site repairing. This method is difficult to construct, slow in progress, and high in cost. It is difficult to guarantee the quality of an...

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Problems solved by technology

[0003] In the past, the internal anti-corrosion of the pipelines in the Hekou Oil Production Plant usually used the method of prefabrication in the factory and on-site repairing. This method is difficult to construct, slow in progress, and high in cost. It is difficult to guarantee the anti-corrosion quality of the welding joints.

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