METHOD AND APPARATUS FOR SEALING PIPELINE

A spherical member (10) is advanced by pressure along the interior of a pipeline (12) to seat against a restraining member (14) forming a pressure-tight seal. The advancing pressure may then be increased within the pipeline to monitor for leaks in the upstream section of the pipeline. The spherical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	AARON ELZO PIERCE, WYNN PATTERSON RICKEY
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A spherical member (10) is advanced by pressure along the interior of a pipeline (12) to seat against a restraining member (14) forming a pressure-tight seal. The advancing pressure may then be increased within the pipeline to monitor for leaks in the upstream section of the pipeline. The spherical member (10) is easily retrieved by back pressuring the downstream section of the pipeline (12) thereby dislodging the spherical member from the restraining member (14).