Apparatus for repair of high temperature and pressure conduits, method for repairing high temperature and pressure conduits, and a sealing device for repairing high temperature and pressure conduits

摘要

A conduit repair apparatus includes a carriage configured for movement within a conduit, the carriage including a carrying frame and a drive member. An expansion and brake mechanism is provided on the carriage, and includes at least one radially movable engagement member to apply a radially outwardly directed force. A mechanical force applicator mechanism is provided on the carriage and includes at least one force applicator configured to apply radially outwardly directed pressure and for rotation about an axis of rotation. A power source is connected to the force applicator mechanism to rotatably drive the force applicator about the axis of rotation, whereby the force applicator mechanism can be actuated and simultaneously rotated to thereby apply radially outwardly directed pressure uniformly to an inner wall of a repair sleeve positioned within the conduit. A method of repairing a conduit includes positioning a repair sleeve at a location within a conduit to be repaired, expanding the repair sleeve into engagement with an inner wall of the conduit by actuation of an expansion and brake mechanism exerting an internal outwardly directed radial force on the repair sleeve, further deforming the repair sleeve into sealing engagement with the inner wall of the conduit by actuation of a force application mechanism exerting a rotating internal outwardly directed radial force on the repair sleeve.