关键词: 抽水蓄能电站, 高强钢板, 压力钢管, 整体卷制

Abstract: To accelerate the manufacturing progress of penstock in pumped- storage power station, through testing and demonstration, two high-strength steel plates with a length of 8 meters for one sec⁃ tion of steel pipe with a diameter of 5 meters were replaced by one steel plate with a length of 16 meters. During the manufacturing process, quality control in plate blanking, groove preparation, rolling, assem ⁃ bly and rounding, and welding was strengthened to expand the scope of the integral rolling of high strength steel penstock. Reducing the processing and welding of one longitudinal joint in integral rolling is beneficial to ensure the manufacture quality, save the labor and material, shorten the construction pe ⁃ riod, and alleviate the production pressure of construction peak period.

Key words: pumped-storage power station, high-strength steel plate, penstock, integral rolling