Refrigeration – Storage of solidified or liquified gas – With sorbing or mixing
Patent
1979-03-28
1981-06-23
Yudkoff, Norman
Refrigeration
Storage of solidified or liquified gas
With sorbing or mixing
200148E, 62 12, 62 45, F25J 308
Patent
active
042748518
ABSTRACT:
A gas recovery method and apparatus for the recovery and storage of a gas from a gas enclosure or circuit particularly for the recovery of sulphur hexafluoride (SF.sub.6) from the arc chamber of a high voltage/current circuit breaker. A gas bottle is connected via quick connect coupling and a non-return valve to the gas circuit or enclosure. The gas bottle is immersed in a liquid nitrogen environment in a Dewar flask thereby generating a self pumping action as the sulphur hexafluoride liquifies (or solidifies) within the gas bottle due to the temperature of the liquid nitrogen (-196.degree. C.) being well below the phase change temperature of the sulphur hexafluoride over the range of encountered vapor pressures. When the gas has been recovered, it is stored in the gas bottle which is returned to ambient temperature by removal from the liquid nitrogen and/or by immersion in a heated bath. The gas bottle is reconnected to the gas circuit when recharging of the circuit with the recovered SF.sub.6 is required.
REFERENCES:
patent: 3362174 (1968-01-01), Carbonell et al.
patent: 3661542 (1972-05-01), Collins
patent: 3793499 (1974-02-01), Wagner et al.
patent: 4127163 (1978-11-01), Reti
The University of Sydney
Yudkoff Norman
LandOfFree
Gas recovery of sulphur hexafluoride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas recovery of sulphur hexafluoride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas recovery of sulphur hexafluoride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2206135