Anti-corrosion construction device for integral inner wall of penstock of hydropower station and anti-corrosion construction method for anti-corrosion construction device

Abstract

The invention discloses an anti-corrosion construction device for an integral inner wall of a penstock of a hydropower station and an anti-corrosion construction method for the anti-corrosion construction device. According to the anti-corrosion construction device, an upper operating platform and a lower operating platform are arranged in an upper elbow of an upper horizontal section of the penstock and a lower elbow of a lower horizontal section of the penstock respectively, a movable operating platform is arranged in an inclined section of the penstock, four independent guide rails located in the inclined section of the penstock are connected to the upper operating platform and the lower operating platform, matching holes of the movable operating platform are matched with the guide rails, rollers of the movable operating platform are matched with the guide rails, the movable operating platform is connected to a winch, and a constructor adopts a sand blasting derusting device and a thermal spraying ceramic spray gun to carry out derusting on the inner wall of the penstock and thermally spray an anti-corrosion wear-resistant coating on the inner wall of the penstock on the movableoperating platform. According to the anti-corrosion construction device and the anti-corrosion construction method thereof, the on-line integral construction of an anti-corrosion wear-resistant material is realized, the anti-corrosion wear-resistant material is excellent in liquid immersion corrosion resistance and high in wear resistance and erosion resistance, the long-term safe operation of thepenstock of the hydropower station is ensured, the integral internal corrosion prevention is completed at a time, coating defect repair and joint coating of an inner anti-corrosion layer are avoided,and the construction period of the internal corrosion prevention of the penstock is shortened.

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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