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US 2019/0338858 A1Published application
High pressure detachable/retractable stopper plug
AssigneeOperations Technology Development, Nfp
InventorsJeffery W. MAINZER, James E. Huebler, Jim Diehl
Life of this patent
Estimating the term…
Abstract
A system for stopping flow in a pipe with a plug positioned in the pipe to allow for repairs of the pipe. The plug comprises a body with an inflatable or compressible member, and a cap and connector valve on the body. An inflation line with a coupling connects to the valve for blocking off and sealing a damaged area of the pipe. An inflation line is used to deposit and retrieve the plug within the pipe before and after a repair is made.
Claims20
A method for stopping flow in a pipe comprising:
- providing a plug including a body with an inflatable member, a cap on a first end of the body and an inflation connector valve on an opposite second end of the body;
- connecting an inflation line with a coupling to the connector valve on the plug;
- positioning the plug in the pipe with the inflation line;
- inflating the inflatable member with the inflation line to seal the pipe;
- detaching the inflation line from the plug;
- and
- retrieving the plug by reconnecting the inflation line to the plug, and deflating the inflatable member, and removing the plug from the pipe with the inflation line.
4 more elements
A system for stopping flow in a pipe comprising:
- a plug positioned in the pipe, wherein the plug comprises a piston with a compressible member and a connector;
- an insertion line with a coupling for connecting to the connector on the plug;
- and
- wherein the plug is positioned in the pipe with the insertion line;
- wherein the compressible member collapses increasing a diameter of the compressible member thereby sealing the pipe and the insertion line detaches from the plug and is removed from the pipe;
- and
- wherein the plug is retrieved by reconnecting the insertion line to the plug, the compressible member extends reducing the outside diameter of the compressible member unsealing the pipe, and the plug is removed from the pipe with the insertion line.
4 more elements
Dependencies are inferred from the claim text.