Pressure-resistance inspection apparatus for valves and its inspection method, and hydrogen gas detection unit
US11162914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/224
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a pressure-resistance inspection apparatus for valves and its inspection method, and hydrogen gas detection unit capable of detecting external leakage and specifying its position of occurrence even for valves with different sizes and shapes by performing pressure-resistance inspection with a simple structure quickly with high accuracy while preventing errors in test results, without requiring post-treatment for the valves, and also capable of mass processing by automation. Provided are a cover 2 in which a test valve 1 is accommodated in a state of being isolated from outside and a sensor 22 inside this cover 2 and capable of moving to a position close to an outer surface of the test valve 1 filled with a search gas. This sensor 22 is a gas sensor capable of detecting external leakage of the search gas from the test valve 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.