skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: REACTOR CONTROL MECHANISM

Abstract

A quick-releasing mechanism is described which may be used to rapidiy drop a device supported from beneath during normal use, such as a safety rod in a nuclear reactor. In accordance with this invention an electrical control signal, such as may be provided by radiation detection or other alarm condition sensing devices, is delivered to an electromagnetic solenoid, the armature of which is coupled to an actuating mechanism. The solenoid is energized when the mechanism is in its upper or cocked position. In such position, the mechanism engages a plurality of retaining balls, forcing them outward into engagement with a shoulder or recess in a corresponding section of a tubular extension on the upheld device. When the control signal to the solenoid suddenly ceases, the armature drops out, allowing the actuating mechanism to move slightly but rapidly under the force of a compressed spring. The weight of the device will urge the balls inward against a beveled portion of the actuating mechanism and away from the engaging section on the tubular extension, thus allowing the upheld device to fall freely under the influence of gravity.

Inventors:
; ;
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4226200
Patent Number(s):
2885893
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-023130
NSA Number:
NSA-13-023130
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
REACTORS; COILS; CONTROL; CONTROL ELEMENTS; DETECTION; ELECTRICITY; ELECTROMAGNETIC FIELDS; GRAVITATION; MACHINE PARTS; MECHANICAL STRUCTURES; MECHANICS; MOTION; RADIATIONS; RODS; SAFETY; SHUTDOWN; SIGNALS; SPRINGS; VELOCITY; WEIGHT

Citation Formats

Lane, J.A., Engberg, R.E., and Welch, J.M. REACTOR CONTROL MECHANISM. United States: N. p., 1959. Web.
Lane, J.A., Engberg, R.E., & Welch, J.M. REACTOR CONTROL MECHANISM. United States.
Lane, J.A., Engberg, R.E., and Welch, J.M. Tue . "REACTOR CONTROL MECHANISM". United States.
@article{osti_4226200,
title = {REACTOR CONTROL MECHANISM},
author = {Lane, J.A. and Engberg, R.E. and Welch, J.M.},
abstractNote = {A quick-releasing mechanism is described which may be used to rapidiy drop a device supported from beneath during normal use, such as a safety rod in a nuclear reactor. In accordance with this invention an electrical control signal, such as may be provided by radiation detection or other alarm condition sensing devices, is delivered to an electromagnetic solenoid, the armature of which is coupled to an actuating mechanism. The solenoid is energized when the mechanism is in its upper or cocked position. In such position, the mechanism engages a plurality of retaining balls, forcing them outward into engagement with a shoulder or recess in a corresponding section of a tubular extension on the upheld device. When the control signal to the solenoid suddenly ceases, the armature drops out, allowing the actuating mechanism to move slightly but rapidly under the force of a compressed spring. The weight of the device will urge the balls inward against a beveled portion of the actuating mechanism and away from the engaging section on the tubular extension, thus allowing the upheld device to fall freely under the influence of gravity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {5}
}