Crc-evans Rehabilitation Systems, Inc.

Andrzej Stenzel

Sidney A Taylor

Stanley J Rogala

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.

Growing community of inventors

Houston, TX, United States of America

Andrzej Stenzel