MULTI- DOUBLE BLOCK AND BLEED SYSTEM FOR AN ORIFICE FITTING

A system and method for providing a multi-double block and bleed configuration in an orifice fitting to provide an additional barrier of protection between the pressurized flow stream and the environment outside the flowmeter. The multi-double block and bleed system includes a first pair of blocking...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LOGA, Thomas Henry, SYRNYK, Peter, SCHWARZ, Darren, BLANKENSHIP, Jerry, STOKES, Jon, SZUCS, Ferenc, CARTER, Anthony E
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MECHANICAL ENGINEERING METERING BY VOLUME PHYSICS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING TESTING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A system and method for providing a multi-double block and bleed configuration in an orifice fitting to provide an additional barrier of protection between the pressurized flow stream and the environment outside the flowmeter. The multi-double block and bleed system includes a first pair of blocking valves located below a second pair of blocking valves. The multi-double block and bleed system further includes a first vent valve positioned between blocking valves of the first pair blocking valves, a second vent valve positioned between blocking valves of the second pair of blocking valves, and a third vent valve positioned between the first and second pairs of blocking valves. The pairs of blocking valves and the vent valves are arranged to provide double block and bleed during all phases of orifice plate installation and removal.