Device for descaling and derusting for pipeline and coating to form anti-corrosion coat and application method

Abstract

The invention relates to a device for descaling and derusting for a pipeline and coating to form an anti-corrosion coat and an application method. The device for descaling and derusting for the pipeline and coating to form the anti-corrosion coat comprises a cleaning device and a pipeline coating device, wherein the cleaning device is formed by connecting an air compressor, an oil-removing and water-filtering device, a gas storage tank and a jet generation pipe in series in turn; the jet generation pipe is connected with a dry ice storage bin and an abrasive material storage bin; the pipeline coating device is formed by connecting a high pressure fan, a heating device and a resin coating material atomization device in series in turn; the other end of the resin coating material atomization device is connected with the gas storage tank; the heating device and the resin coating material atomization device are connected on the jet generation pipe through the pipeline; and the jet generation pipe is connected with a cleaned pipeline. The device has the advantages of short descaling and wall-retaining time, low energy consumption, high construction speed, high efficiency and no pollution.

Description

Technical field: [0001] The invention relates to a pipeline descaling and descaling and anti-corrosion coating device and application method, which belongs to the technology of descaling, descaling and anti-corrosion of pipelines of various calibers, and is suitable for water supply pipes, heat supply pipes, boiler pipes, oil pipelines, Pneumatic conveying pipeline. Background technique: [0002] At present, domestic water supply pipes, heat supply pipes, boiler pipes, oil pipes, and pneumatic conveying pipes are mostly made of galvanized steel pipes. After a long period of use, due to the intermittent retention of the conveying fluid in the pipes, impurities in the medium settle in the pipes to form pipe scale. There are a large amount of inorganic salts and microbial metabolites in the pipe scale, which produce complex electrochemical and biochemical reactions on the inner wall of the pipe, resulting in a large amount of rust and scale mixture between the pipe scale and th...

AI Technical Summary

Problems solved by technology

[0002] At present, domestic water supply pipes, heat supply pipes, boiler pipes, oil pipes, and pneumatic conveying pipes are mostly made of galvanized steel pipes. After a long period of use, due to the intermittent retention of the conveying fluid in the pipes, impurities in the medium settle in the pipes to form pipe scale. There are a large amount of inorganic salts and microbial metabolites in the pipe scale, which produce complex electrochemical and biochemical reactions on the inner wall of the pipe, resulting in a large amount of rust and scale mixture between the pipe scale and the inner wall of the pipe, thereby reducing the inner diameter of the pipe. It not only affects the flow rate of the fluid in the pipeline, but also affects the quality of the fluid in the pipeline, and even causes major losses due to leakage

At present, the following methods are generally used in the world for rust removal, scale removal and inner wall anti-corrosion treatment of the inner wall of the pipeline: 1. Mechanical scraping method, generally used for large-diameter pipelines, using mechanical tools to scrape off the scale on the inner wall of the pipeline, and rinse with water After cleaning, the cement mortar retaining wall is used for treatment, but the cement mortar retaining wall increases the friction force of fluid transportation, thereby reducing the head of the fluid

2 Vibration method, the pipeline is vibrated by various methods to make the scaling in the pipeline fall off but the rust removal is not complete

For example: the mechanical scraping method is difficult to deal with when the pipeline changes diameters and bends; the essence of the airflow method is the sandblasting method, which consumes a lot of compressed air and consumes a lot of power during construction, which is very weary on the pipeline, especially for the pipeline. The impact at the bend can easily break through the pipeline; the vibration method is difficult to implement for buried pipelines; it is difficult to control the amount of chemical reagents in chemical cleaning, which is prone to pollution and requires a large amount of clean water to flush the pipeline

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