Device incorporating micro-porous membrane for venting gases from seal assembly of a reactor coolant pump
US4990054A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Dec 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/93
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump has a stationary seal housing with pressurized liquid and gas therein, a rotatable shaft disposed through the housing and operable for centrifugally producing rotation of the liquid within the housing, and a seal assembly disposed between the housing and rotatable shaft. The pump employs a device 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 includes a body in the form of an externally threaded plug threadably mounted into an internally threaded bore in the seal housing, a flow facilitating passageway 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 mounted to the plug across the entry opening of the passage for permitting gas flow while blocking liquid flow therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.