A method for sealing a liquid leak in a pipe. The method may include wrapping a circumference of the pipe with a gasket material at a location of the leak to create an annular cavity between the gasket material and the pipe. The method may also include allowing the leaking liquid to exit from the annular cavity. The method may further include securing the gasket material to the pipe. The method may also include injecting an expandable grout into the annular cavity between the pipe and the gasket material. The method may further include allowing the grout to expand upon contact with the leaking liquid to create a seal around the leak. The method may also include adhering a reinforcement material to the gasket material and the pipe to reinforce the gasket material and the pipe at the location of the leak.

A device for preparation of composite for on-site pipeline reinforcement includes: a temperature control stirring unit, an infiltration unit, and a vacuum unit communicated in sequence, the infiltration unit includes a spindle, reinforced fiber cloth, a flow-guiding net, and a vacuum bag film sleeved outside them, the spindle is stopped by two baffles, an adhesive feeding joint and an adhesive discharging joint are disposed at two ends of the spindle, respectively, the adhesive feeding joint and the adhesive discharging joint each includes an inner joint and an outer joint, sealing discs disposed at a junction between the inner joint and the outer joint, an outer wall of the inner joint and an outer side of the baffle are covered by a flow-leading net, and the flow-guiding net covered on the outer side of the baffle extends from an edge of the baffle into the adhesive storing compartment of the baffle.

A device for preparation of a composite for on-site pipeline reinforcement includes: a temperature control stirring unit, an infiltration unit, and a vacuum unit, which are communicated in sequence, the infiltration unit includes a spindle, reinforced fiber cloth, a flow-guiding net, and a vacuum bag film sleeved outside the spindle, the reinforced fiber cloth and the flow-guiding net, the spindle is stopped by two baffles, an adhesive feeding joint and an adhesive discharging joint are disposed at two ends of the spindle, respectively, each of the adhesive feeding joint and the adhesive discharging joint includes an inner joint and an outer joint, an outer wall of the inner joint and an outer side of the baffle are covered by a flow-leading net, and the flow-guiding net covered on the outer side of the baffle extends from an edge of the baffle into the adhesive storing compartment of the baffle.

A device for winding a reinforcing strip onto a repair length on either side of a portion to be repaired of a pipe, including: a carriage bearing a reel holder and a reel, means for rotating the carriage around the pipe and for translating same along the longitudinal axis of the pipe so that the strip is wound around the pipe in the form of a helix, means for reversing the direction of translation movement of the carriage so that, at each change of direction, the carriage moves in a direction opposite to the previous one and a layer of reinforcing strip is wound around the pipe, overlapping the previous layer. The means for translating the carriage include a conveying chain and the reversing means are actuated automatically without the intervention of an operator.

A machine configured to repair a pipeline extending along a longitudinal axis determined in a body of water, the machine comprising: a frame configured to be clamped to the pipeline; an applicator configured to apply material along an outer surface of the pipeline and comprising a support body shaped as an open ring and configured to be arranged about the pipeline; and an actuating assembly, which is supported by the frame, is arranged between the frame and the applicator, has a distal end configured to support the applicator in a cantilevered fashion and in a rotatable manner, and is configured to displace the applicator along the longitudinal axis and/or to rotate the applicator about the longitudinal axis.

A system (10) for reinforcing a pipeline (90) or pressure vessel includes a dispenser (12), a quantity of fabric (14), and a resin (16). The dispenser (12) has a first end (39), a second end (32), and a slot (46) formed in a wall (48), and is pressurizable via a fluid input (74) to a pressurized state. The dispenser (12) has a seal (56) configured to permit the quantity of fabric (14) to pass through the slot (46) and retain pressure within the dispenser (12). The dispenser (12) is configured to dispense the quantity of fabric (14) through the slot (46). The quantity of fabric (14) has a first width (24).

A in-service repair method combing externally bonded pre-stressed FRP and polymer grouting for PCCP with broken wire, includes excavating PCCP, supporting the PCCP, treating outer wall of PCCP, bonded an external of the PCCP with pre-stressed FRP for repairing, laying grouting pipe, backfilling and grouting for densing. First of all, excavating a PCCP pipeline to be repaired and supporting the PCCP pipeline with a supporting device, smoothing the outer wall of the PCCP pipeline at a broken wire position and applying primer, and winding the FRP around a damaged portion of the PCCP pipeline, pre-stressing the FRP by applying a pre-stressing device and applying dipping glue to the FRP after tension to stick the FRP on the pipe wall, then laying a grouting pipe, backfilling the pipeline repaired, and finally injecting polymer into the soil after backfilling and compacting the soil by the grouting pipe pre-buried.

Fluid leak repair kits are described comprising a putty, self-amalgamating tape, and a composite material for use in encompassing the self-amalgamating tape. The composite material comprises a flexible sheet or tape and a matrix component for binding the flexible sheet or tape. The matrix component comprises a resin or water-activated matrix component which, when cured, forms an outer shell.

A method of repairing a flexible pipe within a carrier pipe. The method then increases a first area of a first hole in the carrier pipe. The method then bends a first layer of the flexible pipe around a second hole in the first layer. The method then patches a third hole in a second layer of the flexible pipe.

A composite system for the reinforcement of physical structures includes a plurality of unidirectional fibers arranged with respective longitudinal axes generally parallel to each other over a substantial portion of a length of each unidirectional fiber. The plurality of unidirectional fibers are non-mechanically connected. A resinous material adheres the plurality of unidirectional fibers to each other such that each one of the plurality of unidirectional fiber is adhered to at least one adjacent one of the plurality of unidirectional fibers along a substantial portion of the length of the adjacent one of the plurality unidirectional fibers.