Method and apparatus for examining weld defects in vertical pipes by supersonic waves
US4096757A · kind A · utility
8Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1976 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Dec 7, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/265
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic defect detection apparatus comprising a supersonic probe, a rotary shaft for revolving the probe along the inner surface of a pipe to be examined, and a hollow shaft removably connected to the rotary shaft for vertically moving the probe. Water acting as a contact medium is circulated between the operating surface of the probe and a water tank through the rotary shaft and the hollow shaft. The apparatus is inserted into a pipe to be examined such as the control rod housing of an atomic reactor through the bottom opening of the pipe, and can be operated from a remote place for the sake of safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.