Crc-evans Rehabilitation Systems, Inc.

Crc-evans Pipeline International, Inc.

Stanley J Rogala

Sidney A Taylor

Andrzej Stenzel

Gary N King

Kyle M Hawkins

A pipeline treating apparatus ( ) is disclosed which is used to clean the exterior of a pipeline ( ) with high pressure air with entrained abrasive. The apparatus has an improved classifier and separator to separate the abrasive grit from lighter debris which includes a classifier and separator within a manifold duct ( ) which returns the grit to a collection pan ( ) for recovery and causes the lighter airborne dust to be removed through a return duct ( ). A series of pressure relief filters ( ) reduce the air pressure within a blast chamber ( ) and resist debris escaping from the blast chamber past the triple seals ( ). The blast nozzle assemblies ( ) are attached to the nozzle oscillating frames by snap fittings ( ) which avoids threaded connections which may become contaminated by the debris.

Air abrasive blast line travel machine

A pipeline treating apparatus (350) is disclosed which includes a main frame (352) and a pair of wings (354, 356) pivotally mounted to the main frame for surrounding a pipeline to be treated. Each wing mounts at least one bracket (390, 392) for oscillating motion about a portion of the exterior of the pipeline surface. Each bracket mounts at least one nozzle (382) for treating the outer surface of the pipeline. A single drive motor on each wing can drive a pair of brackets, each bracket being oscillated a different arcuate length than the other bracket, if desired. The number of nozzles mounted on each bracket can be varied to address a specific treatment problem.

High pressure water jet cleaner and coating applicator

A pipeline treating apparatus (600) is disclosed which has a pair of pivotally mounted housing sections (604,608) and a pair of separately pivotal nozzle frames (610, 612). A nozzle plate is mounted on each of the nozzle frames and carries a plurality of nozzles (622). A drive mechanism on the nozzle frames oscillates the nozzle plate a predetermined arcuate distance around the circumference of the pipeline so that the nozzles treat the entire outer surface of the pipeline. The housing sections and nozzle frames are separately pivotal from a removal position, to allow removal of an installation of the apparatus on the pipeline, to a operational position concentric about the pipeline for performing the treating operation.

Device for surface cleaning, surface preparation and coating applications

A plug (10) is disclosed which is clamped to the end of a first pipeline section (14) being worked on by a line travel device (12). The line travel device (12) can completely perform its operation on the first pipeline section and move on to the plug. The plug is then unclamped from the first pipeline section and the plug and line travel device are moved together to the second pipeline section (16) to be worked on. The plug is clamped to the second pipeline section (16) to be worked on and the line travel device moves off the plug onto the second pipeline section to perform its operation on the entire length of the section.

Apparatus for transferring line travel device from one pipeline section

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 an 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 with entrained abrasives. The nozzles (44) can also be used to apply a coating, preferably a polyurethane coating to the pipeline. A nozzle assembly (200) can be used to mount a spray gun (204) on the apparatus. The nozzle assembly permits easy adjustment of the nozzle position in two different directions to insure a consistent spray pattern. The nozzle assembly also provides for reversal of the tip of the nozzle for cleaning.

Growing community of inventors

Katy, TX, United States of America

Stanley J Rogala