Over-pressure limiting arrangement for a cryogen vessel
US9523467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2013 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Nov 17, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1692
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An over-pressure limiting arrangement for a cryogen vessel includes an access neck providing access into the cryogen vessel, a tubular structure extending through the access neck, a turret outer assembly joined leak-tight to the cryogen vessel and defining an interior volume that is separated from the atmosphere by a protective valve or burst disc, enclosing an upper extremity of the access neck and the tubular structure. An egress path defines a route for cryogen gas to escape from the turret outer assembly, and a pressure-responsive quench valve seals the egress path and opens when a differential pressure between the interior of the turret outer assembly and the interior of the egress path exceeds a predetermined value. An auxiliary burst disc, or a valve, is attached to the tubular structure within the turret outer assembly, with an inner surface thereof exposed to the interior of the tubular structure and an outer surface thereof exposed to the interior of the turret outer assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.