Liquid-metal dip seal with pneumatic spring
Patent
·
OSTI ID:862840
- Pleasant Hills, PA
An improved liquid-metal dip seal for sealing the annulus between rotating plugs in the reactor vessel head of a liquid-metal fast-breeder nuclear reactor has two legs of differing widths communicating under a seal blade; the wide leg is also in communication with cover gas of the reactor and the narrow leg is also in communication with an isolated plug annulus above the seal. The annulus contains inert gas which acts as a pneumatic spring. Upon increasing cover gas pressure which depresses the level in the wide leg and greatly increases the level in the narrow leg, the pneumatic spring is compressed, and resists further level changes, thus preventing radioactive cover gas from bubbling through the seal.
- DOE Contract Number:
- E(11-1)-2395
- Assignee:
- United States Energy Research and Development Administration (Washington, DC)
- Patent Number(s):
- US 4026763
- OSTI ID:
- 862840
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/376/137/976/
annulus
blade
breeder nuclear
bubbling
changes
communicating
communication
compressed
contains
cover
cover gas
depresses
differing
dip
dip seal
fast-breeder
fast-breeder nuclear
gas
gas pressure
greatly
greatly increase
head
improved
improved liquid
increases
increasing
inert
inert gas
isolated
leg
legs
level
liquid-metal
liquid-metal dip
liquid-metal fast-breeder
metal fast
narrow
nuclear
nuclear reactor
plug
plugs
pneumatic
pneumatic spring
pressure
preventing
radioactive
reactor
reactor vessel
resists
rotating
rotating plug
rotating plugs
seal
sealing
spring
vessel
vessel head
wide
widths
annulus
blade
breeder nuclear
bubbling
changes
communicating
communication
compressed
contains
cover
cover gas
depresses
differing
dip
dip seal
fast-breeder
fast-breeder nuclear
gas
gas pressure
greatly
greatly increase
head
improved
improved liquid
increases
increasing
inert
inert gas
isolated
leg
legs
level
liquid-metal
liquid-metal dip
liquid-metal fast-breeder
metal fast
narrow
nuclear
nuclear reactor
plug
plugs
pneumatic
pneumatic spring
pressure
preventing
radioactive
reactor
reactor vessel
resists
rotating
rotating plug
rotating plugs
seal
sealing
spring
vessel
vessel head
wide
widths