IMPROVEMENTS IN OR RELATING TO FLUID FLOW VALVE MECHANISMS

Patent · Mon Aug 01 04:00:00 EDT 1960

OSTI ID:4144588

A valve of the drain-and-fill type is designed for nuclear power stations, especially the liquid metal cooled type. The advantage of the design is that a seal of mass spectrometric tightness is pcssible without self-welding of the valve members due to the cleaning action of the liquid metal. The valve comprises a T-shaped housing with a valve port of circular cross sectional area and a hollow head 0.002 to 0.004 inch larger in diameter than the port; a lowtemperature fluid flows into the hollow space of the head. To close the valve, the hollow space coolant shrinks the head sufficiently to seat it securely in the port, and then the coolant flow is interrupted, which allows the head to return to ambient temperature and thus to effect a tight seal. To open the seal, the cooling procedure is repeated. The head and mating port preferably have a slight taper of 1 to 2 , end the valve closing mechanism is of the hydraulically actuated serve type. (D.L.C.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-024228
• OSTI ID: 4144588
• Report Number(s): GB 843317
• Country of Publication: United Kingdom
• Language: English

Related Subjects

CLEANING
CONFIGURATION
COOLING
ENGINEERING AND EQUIPMENT
FLUID FLOW
LEAKS
LIQUID METAL COOLANT
MASS SPECTROMETERS
OPERATION
PATENT
PLANNING
POWER PLANTS
QUANTITATIVE ANALYSIS
REACTORS
SEALS
SERVOMECHANISMS
VALVES