Anti-corrosion construction device and anti-corrosion construction method for the integral inner wall of penstock steel pipes in hydropower stations

Abstract

The invention discloses an anti-corrosion construction device and an anti-corrosion construction method for the integral inner wall of pressure steel pipes in hydropower stations. Upper and lower operating platforms are installed in the upper and lower bends of pressure steel pipes in upper and lower horizontal sections, and pressure steel pipes in inclined sections are equipped with The mobile operation platform, the upper and lower operation platforms are connected with four independent guide rails located in the pressure steel pipe of the inclined section. To connect, the construction personnel use the sandblasting derusting device and the thermal spraying ceramic spray gun to derust the inner wall of the pressure steel pipe and thermally spray the anti-corrosion and wear-resistant coating on the mobile operation platform. In the present invention, the construction of anti-corrosion and wear-resistant materials is done online as a whole. The anti-corrosion and wear-resistant materials have excellent liquid immersion and corrosion resistance, high wear resistance and erosion resistance, and ensure the long-term safe operation of penstock steel pipes in hydropower stations. The repair of the anti-corrosion layer can shorten the construction period of the anti-corrosion in the penstock.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion construction of the inner wall of the pressure steel pipe of a hydropower station, in particular to an anti-corrosion construction device and an anti-corrosion construction method for the integral inner wall of a pressure steel pipe of a hydropower station. Background technique [0002] my country has a vast territory and abundant hydropower resources. As a clean and renewable energy source, hydropower has significant environmental benefits and its development potential is huge. With the adjustment of the national economic structure, the adjustment of the energy structure, especially the implementation of the strategy of energy conservation and emission reduction, the vigorous development of hydropower and clean energy is the only way for China's energy structure adjustment, and hydropower resources have been actively developed and developed as energy strategies and energy security. field. ...

AI Technical Summary

Problems solved by technology

[0005] At present, most of the anticorrosion of the inner wall of the pressure steel pipe of the hydropower station is painted with anticorrosion paint, which is difficult to withstand the long-term erosion and corrosion of the water flow, resulting in premature damage to the anticorrosion layer

Due to the long pressure steel pipe, especially the high slope and slope of the inclined pipe section, it is more difficult to erect the overall anti-corrosion inner wall scaffolding. Due to the inclined design of the inclined pipe section of the penstock steel pipe, when the inner anti-corrosion scaffold is erected, the scaffold pole must be welded to the pipeline. The lower side of the inner wall can play the role of supporting the scaffolding. When the scaffolding is removed after the internal anticorrosion is completed, it will take a lot of time to repair the anticorrosion layer at the welding point, so that the construction period of the internal anticorrosion will be delayed several times.

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