Special anti-corrosion equipment for steel pipe lining of the Pearl River Delta Water Resources Allocation Project, 15038554363 large diameter steel pipe (Φ4800-6000mm×L1000-12000mm) is mainly used in the construction of water pipelines, urban sewage, and water supply networks. The steel pipes need to be used for internal and external corrosion protection. For coating spraying, the steel pipe needs to be preheated before spraying. At present, medium frequency induction heating is usually used to preheat steel pipes. The three intermediate frequency induction heating coils are staggered with each other by the staggered three mounting plates. When the steel pipe is rotated by an external drive mechanism, the intermediate frequency induction heating coils on the three mounting plates can avoid repeated heating of the same part of the steel pipe, thus avoiding resources Waste is conducive to energy saving, emission reduction and environmental protection, and at the same time, the heating speed is accelerated, and the heating efficiency is improved, which can effectively solve the problems in the background technology. Water resources allocation project large-diameter steel pipe medium frequency induction heating anti-corrosion equipment, including a roller frame base, a rotating roller is set on the support, and a steel pipe is placed between the two rotating rollers.
The steel pipe main heating equipment adopts energy-saving 800kw buffer wave intermediate frequency induction heating power supply. The heating method is the inner wall heating of the pipe. The inductor adopts a fan-shaped staggered structure. The steel pipe rotates on the roller frame and the flat car on the roller frame advances to make the inner surface of the steel pipe. The heating temperature is very uniform, and the temperature difference is ≦±1℃, which reaches the best temperature in the powder spraying area (need to match the performance of the powder product); in accordance with the forward speed and rotation speed of the steel pipe, only 6 sets of spray guns can meet the thickness of the epoxy powder Requirements: The number of coating layers is 2 and the total thickness is 0.4mm. This through-type coating method can greatly improve the uniformity of the coating. Calculated based on the coating thickness of 0.40mm, the thickness deviation is 0.06mm～0.1mm, and the total coating thickness is controlled between 0.40mm～0.50mm.
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