High pressure water jet cleaner and coating applicator
AssigneeCRC-Evans Pipeline International, Inc.
InventorsSidney A. Taylor, Stanely J. Rogala
Life of this patent
Estimating the term…
Abstract
An automated pipeline rehabilitation apparatus (10) is disclosed. The apparatus employs a centering assembly (24) with pivoting arms (26, 28) which can pivot between an operating position and a installation/removal position to allow the unit to be removed from a pipeline. Arcuate rings (38, 40) are mounted on the arms. Spray nozzles (44) are mounted on the arcuate rings for reciprocating arcuate motion along the rings to treat the pipeline. The nozzles (44) can be used to clean the pipeline and prepare the outer surface of the pipeline with high pressure water jets in training abrasives. The nozzles (44) can also be used to apply a coating, preferably a polyurethane coating to the pipeline.
Claims9
An apparatus for treating a pipeline, comprising:
- a centering assembly mounted on the pipeline for movement along the pipeline, said centering assembly having a frame member and at least one arm pivotally mounted to the frame member for movement between a first operating position and a second installation position;
- a nozzle carriage assembly mounted on the arm and defining at least one arcuate ring, the arcuate ring being concentric to the center axis of the pipeline when the arm is in the first operating position and spaced from the pipeline when the arm is in the second installation position to allow the apparatus to be installed and removed from the pipeline;
- and
- at least one spray nozzle mounted on the arcuate ring.
Dependencies are inferred from the claim text.