Precast steel sheathed steel directly buried expansion bend for steam pipeline

• Main Authors: ZENG JINBO, HUANG SHENGLONG
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2012
• 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 precast steel sheathed steel directly buried expansion bend for a steam pipeline. The bend comprises a working bend and an outer protecting bend sheathed outside the working bend, wherein the working bend and the outer protecting bend have the same circle center; big and small eccentric heads are respectively arranged at the two ends of the outer protecting bend; and the curvature radius of the working bend is smaller than that of the outer protecting bend. The bend has the following beneficial effects that: by additionally arranging the big and small eccentric heads at the two ends of the outer protecting steel pipe, the working steel pipe has an expansion space and heat losses are prevented.