High-temperature expansion joint

• Main Author: QIU YUKUN
• Format: Patent
• Language: English
• Published: 20.05.2015
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model relates to a high-temperature expansion joint which comprises an outer corrugated pipe. The outer corrugated pipe is provided with an upper end plate and a lower end plate. A straight pipe with the upper end extending outwards by a preset length is arranged in the outer corrugated pipe. The straight pipe and the upper end plate are sealed, welded and connected. A sleeve is arranged in the outer corrugated pipe. A pressing plate is arranged on the upper end face of the sleeve. The pressing plate slides on the upper end face of the sleeve when the outer corrugated pipe horizontally moves. A hole is formed in the pressing plate. The lower end of the straight pipe is inserted into the sleeve after extending out of the hole. The straight pipe can rise and fall in the sleeve when the outer corrugated pipe perpendicularly moves. The lower end plate and a conical pipe are sealed and welded. The conical pipe is communicated with the sleeve. The inner sealed space of the outer corrugated pipe is filled with fireproof thermal insulation materials. The high-temperature expansion joint is large in expansion amount, not prone to deformation failure, resistant to high temperature and free of ash leakage and has great significance in production practice.