Pipe cleaning apparatus for oil or gas pipelines

Details Pipe cleaning apparatus for oil or gas pipelines Pipe cleaning apparatus for oil or gas pipelines

1997-07-17

2000-06-06

Chin, Randall E.

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

1510405, B08B 904

Patent

active

060702850

ABSTRACT:
The invention shows pipe cleaning apparatuses for oil and gas pipelines in which a shield with a cleaning apparatus is moved forward by a liquid flow in the pipeline. The shield forms one or more apertures in the pipeline for a passing liquid flow in order to build up a predetermined pressure and is provided at its rear end with a braking apparatus which prevents undesirably large speeds of advance in that at least one clamping element adheres momentarily to the pipe wall and moves relative to the braking apparatus. This movement is kinematically transmitted to a hydraulic displacer which produces a secondary liquid flow that is braked via at least one throttle point and thus determines the speed between the shield and the pipe wall.

REFERENCES:
patent: 4388871 (1983-06-01), Braithwaite
patent: 4494584 (1985-01-01), Rognoni
patent: 4920600 (1990-05-01), Reinhart
patent: 5617604 (1997-04-01), Erich

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