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Title: NUT SCREW MECHANISMS

Abstract

A reactor control mechanism is described wherein the control is achieved by the partial or total withdrawal of the fissile material which is in the form of a fuel rod. The fuel rod is designed to be raised and lowered from the reactor core area by means of two concentric ball nut and screw assemblies that may telescope one within the other. These screw mechanisms are connected through a magnetic clutch to a speed reduction gear and an accurately controllable prime motive source. With the clutch energized, the fuel rod may be moved into the reactor core area, and fine adjustments may be made through the reduction gearing. However, in the event of a power failure or an emergency signal, the magnetic clutch will become deenergized, and the fuel rod will drop out of the core area by the force of gravity, thus shutting down the operation of the reactor.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4301462
Patent Number(s):
2841026
Assignee:
U.S. Atomic energy Commission DTIE; NSA-13-000977
NSA Number:
NSA-13-000977
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PATENTS; CONFIGURATION; CONTROL SYSTEMS; ENERGY; FISSIONABLE MATERIALS; FUEL ELEMENTS; MACHINE PARTS; MECHANICAL STRUCTURES; MOTORS; REACTOR CORE; REACTORS; RODS; SHUTDOWN; SIGNALS

Citation Formats

Glass, J.A.F. NUT SCREW MECHANISMS. United States: N. p., 1958. Web.
Glass, J.A.F. NUT SCREW MECHANISMS. United States.
Glass, J.A.F. Tue . "NUT SCREW MECHANISMS". United States.
@article{osti_4301462,
title = {NUT SCREW MECHANISMS},
author = {Glass, J.A.F.},
abstractNote = {A reactor control mechanism is described wherein the control is achieved by the partial or total withdrawal of the fissile material which is in the form of a fuel rod. The fuel rod is designed to be raised and lowered from the reactor core area by means of two concentric ball nut and screw assemblies that may telescope one within the other. These screw mechanisms are connected through a magnetic clutch to a speed reduction gear and an accurately controllable prime motive source. With the clutch energized, the fuel rod may be moved into the reactor core area, and fine adjustments may be made through the reduction gearing. However, in the event of a power failure or an emergency signal, the magnetic clutch will become deenergized, and the fuel rod will drop out of the core area by the force of gravity, thus shutting down the operation of the reactor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {7}
}