Pipe testing apparatus
US6430990B1 · kind B1 · utility
Assignees
Inventor
Key dates
| Filing date | Nov 10, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Nov 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for forming a test chamber within a tubular and internally pressure testing the tubular with a test gas. The apparatus is comprised of a generally cylindrical tester body having first and second spaced-apart sealing assemblies that are expandable against the inner wall of the tubular by a piston assembly so as to form a test chamber defined by the inner wall of the tubular and the expanded seal assemblies. The pistons of the first sealing assembly are gas actuated pistons acting in cooperation with the seals of the first sealing assembly in response to a gas under pressure. The pistons of the second sealing assembly are fluid actuated pistons acting in cooperation with the seals of the second sealing assembly in response to a fluid under pressure. The pressure of the gas and the pressure of the fluid used to actuate the first and second pistons are controlled independently of each other. The gas used to activate the first set of pistons is directed to the test chamber to serve as a test gas. The apparatus includes a sleeve container for retaining gas escaping from the test chamber to the exterior of the tubular. The sleeve container is provided with a gas detector for …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.