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A platform for research: civil engineering, architecture and urbanism
POSITIVE LOCK SYSTEM FOR RESTRAINED JOINTS OF DUCTILE IRON SPUN PIPES AND FITTINGS
This present invention relates to novel positive lock system for restrained joints of ductile iron spun pipes and fittings which are able to take all the thrust loads produced due to transmitting fluids pressure and provide certain angular deflections to the axis of two pipes. For ductile iron pipe to be joined, a socket (bell shape) and a spigot (plain end) sections are provided in pipes. For joining plain end is inserted in bell shape end. As the water pressure surges, the joint tends to disengage due to increasing axial loads. To take these axial loads, a circumferential chamber is provided in bell shape end and plain end is provided with a weld bead of suitable size. Axial forces generated due to water pressure is transmitted to pipe socket through welding via locking segments. Locking segments are inserted in circumferential chamber and they stays between chamber and welding bead. Circumferential chamber has suitable clearances to provide the required angular deviations at the joint.
POSITIVE LOCK SYSTEM FOR RESTRAINED JOINTS OF DUCTILE IRON SPUN PIPES AND FITTINGS
This present invention relates to novel positive lock system for restrained joints of ductile iron spun pipes and fittings which are able to take all the thrust loads produced due to transmitting fluids pressure and provide certain angular deflections to the axis of two pipes. For ductile iron pipe to be joined, a socket (bell shape) and a spigot (plain end) sections are provided in pipes. For joining plain end is inserted in bell shape end. As the water pressure surges, the joint tends to disengage due to increasing axial loads. To take these axial loads, a circumferential chamber is provided in bell shape end and plain end is provided with a weld bead of suitable size. Axial forces generated due to water pressure is transmitted to pipe socket through welding via locking segments. Locking segments are inserted in circumferential chamber and they stays between chamber and welding bead. Circumferential chamber has suitable clearances to provide the required angular deviations at the joint.
POSITIVE LOCK SYSTEM FOR RESTRAINED JOINTS OF DUCTILE IRON SPUN PIPES AND FITTINGS
FORMSCHLÜSSIGES SYSTEM FÜR ZUGFESTE VERBINDUNGEN VON GESPONNENEN KUGELGRAPHITROHREN UND -FORMSTÜCKEN
SYSTÈME DE VERROUILLAGE POSITIF POUR JOINTS RETENUS DE TUYAUX CENTRIFUGÉS ET DE RACCORDS FILETÉS EN FONTE DUCTILE
SHRIVASTAVA ANURAG (author) / RAJASEKARAN V (author) / BOSE PARTHA (author) / SUBRAMONIAN K (author)
2021-12-08
Patent
Electronic Resource
English
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