Control rod for a nuclear reactor

Patent · Mon Jan 01 04:00:00 EST 1979

OSTI ID:863318

Roman, Walter G ^[1]

---

1. Pittsburgh, PA

A control rod assembly for a nuclear reactor is disclosed having a remotely disengageable coupling between the control rod and the control rod drive shaft. The coupling is actuated by first lowering then raising the drive shaft. The described motion causes axial repositioning of a pin in a grooved rotatable cylinder, each being attached to different parts of the drive shaft which are axially movable relative to each other. In one embodiment, the relative axial motion of the parts of the drive shaft is used either to couple or to uncouple the connection by forcing resilient members attached to the drive shaft into or out of shouldered engagement, respectively, with an indentation formed in the control rod.

• DOE Contract Number: E(11-1)-2395
• Assignee: Westinghouse Electric Corp. (Pittsburgh, PA)
• Patent Number(s): US 4147589
• OSTI ID: 863318
• Country of Publication: United States
• Language: English

Related Subjects

/376/976/
actuated
assembly
attached
axial
axially
axially movable
causes
connection
control
control rod
couple
coupling
cylinder
described
disclosed
disengageable
drive
drive shaft
embodiment
engagement
forcing
formed
grooved
indentation
lowering
motion
movable
movable relative
nuclear
nuclear reactor
raising
reactor
relative
remotely
remotely disengageable
repositioning
resilient
respectively
rod
rod assembly
rod drive
rotatable
rotatable cylinder
shaft
shouldered
uncouple