China Chengda Engineering Co., Ltd. has obtained a patent titled “A hot and cold wall transition connection structure for industrial furnace collectors”

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According to news from April 7, 2025, **information from the Intellectual Property Office shows that China Chengda Engineering Co., Ltd. has obtained a patent titled “A hot and cold wall transition connection structure for industrial furnace collectors,” with the approval announcement number CN 222718659 U; the application was filed in June 2024. The patent abstract indicates that this utility model discloses a cold-hot wall transition connection structure for industrial furnace collectors, belonging to the field of technology related to the connection of industrial furnace collectors. It includes several conversion tubes, double-layer collector fittings, as well as a double-wall transition structure designed to connect these conversion tubes to the double-layer collector fittings. The gap between the two walls of this transition structure is filled with a casting material that prevents overheating. This design is reasonable: the double-layer collector fittings at the bottom of the steam conversion furnace utilize a double-wall structure to create a cold-hot wall transition structure, and the gap between the two walls is filled with casting material, thereby forming a reliable transition structure that avoids the overheating problems associated with traditional designs. The high-temperature medium in this structure is completely isolated from the external environment, eliminating the problem that occurs in traditional structures, where thermal expansion leads to the detachment of the external insulation layer at the transition between the hot and cold walls, exposing the high-temperature structure directly to the air.