Leakage inspection method and apparatus
US6212942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1998 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Oct 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leakage inspection method and apparatus having a pressure wave generating means, including an air supply source, a regulator, and a solenoid valve. A pressure wave of a fluid is applied to a normal flow path of an measurement object by the pressure wave generating means to detect internal leakage by measuring, by means of a microphone, a difference between the transfer time during which the pressure wave passes through the normal flow path and the transfer time during which the pressure wave passes through the leakage flow path. Accordingly, the internal leakage of the fluid, flowing in the leakage flow path bypassing the normal flow path of an equipment having a partition and the normal flow path separated by the partition, is detected, if any.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.