A method and apparatus for the recovery of gases from enclosures

A gas recovery method and apparatus for the recovery and storage of a gas from a gas enclosure or circuit, particularly suitable for the recovery of sulphur hexafluoride (SF6) from the arc chamber of a high voltage/current circuit breaker. A gas holding vessel (22) is connected, suitably via quick c...

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Bibliographische Detailangaben
1. Verfasser:	STOKES, ANTHONY DAVID DR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS HEATING LIGHTING MECHANICAL ENGINEERING RELAYS SELECTORS STORING OF DISTRIBUTING GASES OR LIQUIDS VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	A gas recovery method and apparatus for the recovery and storage of a gas from a gas enclosure or circuit, particularly suitable for the recovery of sulphur hexafluoride (SF6) from the arc chamber of a high voltage/current circuit breaker. A gas holding vessel (22) is connected, suitably via quick connect coupling (24) and a non-return valve (23), to the gas circuit or enclosure. Means (21) are provided to hold the vessel at a temperature below that at which the gas is transformed from vapour to liquid or solid phase. Suitably a Dewar flask and liquid nitrogen are used. The liquefied or solidified gas can be stored in the vessel until required for recharging the circuit or enclosure.