Apparatus for optically checking the inner profile of a tube or bore
US4967092A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | May 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/303
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is provided for optically checking the inner profile of a tube or a bore, especially the tubes of steam generators in nuclear power stations, the apparatus includes a probe which is positioned within and is movable longitudinally within the tube or bore and is connected to an external power supply and analysis system. The probe includes a source of light, a mechanism for causing the light to illuminate the wall of the tube or bore along a line corresponding to the intersection of the wall with a cross-sectional plane, and a mechanism for forming an image of this line on a photo-sensitive sensor, so that variations in the inner profile of the tube or bore can be determined from deviations of the image from a theoretical image corresponding to the typical profile of the tube or bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.