Device incorporating microporous membrane for venting gases from seal assembly of a reactor coolant pump

A pump (14) has a stationary seal housing (32) with pressurized liquid and gas therein, a rotatable shaft (34) disposed through the housing and operable for centrifugally producing rotation of the liquid within the housing, and a seal assembly (38, 40, 42) disposed between the housing and rotatable...

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Bibliographische Detailangaben
1. Verfasser:	JANOCKO, DAVID JEFFREY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CYLINDERS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR POWER PLANT PHYSICS PISTONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SEALINGS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A pump (14) has a stationary seal housing (32) with pressurized liquid and gas therein, a rotatable shaft (34) disposed through the housing and operable for centrifugally producing rotation of the liquid within the housing, and a seal assembly (38, 40, 42) disposed between the housing and rotatable shaft. The pump employs a device (92) for venting from the housing to the exterior thereof the gas released from the liquid in the housing, such as by a drop in the pressure thereof, while blocking escape of the liquid therefrom. The venting device (92) includes a body (94) in the form of an externally threaded plug threadably mounted into an internally threaded bore (104) in the seal housing, a flow facilitating passageway (96) defined through the plug, extending between, and having respective entry and exit openings at, the respective inner and outer sides of the plug for providing communication between the interior and exterior of the seal housing, and a micro-porous membrane (98) mounted to the plug across the entry opening of the passage for permitting gas flow while blocking liquid flow therethrough.