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Title: ELECTROMAGNETIC RELEASE MECHANISM

Abstract

An electromagnetic release mechanism is offered that may be used, for example, for supporting a safety rod for a nuclear reactor. The release mechanism is designed to have a large excess holding force and a rapid, uniform, and dependable release. The fast release is accomplished by providing the electromagnet with slotttd polts separated by an insulating potting resin, and by constructing the poles with a ferro-nickel alloy. The combination of these two features materially reduces the eddy current power density whenever the magnetic field changes during a release operation. In addition to these features, the design of the armature is such as to provide ready entrance of fluid into any void that might tend to form during release of the armature. This also improves the release time for the mechanism. The large holding force for the mechanism is accomplished by providing a small, selected, uniform air gap between the inner pole piece and the armature.

Inventors:
Issue Date:
OSTI Identifier:
4098692
Patent Number(s):
2952802
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
NSA Number:
NSA-15-008319
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-61
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; CONTROL ELEMENTS; EDDY CURRENTS; ELECTROMAGNETIC FIELDS; GEOMETRY; IRON ALLOYS; NICKEL ALLOYS; REACTORS; RESEARCH REACTORS; RODS; TRANSPORT

Citation Formats

Michelson, C. ELECTROMAGNETIC RELEASE MECHANISM. United States: N. p., 1960. Web.
Michelson, C. ELECTROMAGNETIC RELEASE MECHANISM. United States.
Michelson, C. Tue . "ELECTROMAGNETIC RELEASE MECHANISM". United States.
@article{osti_4098692,
title = {ELECTROMAGNETIC RELEASE MECHANISM},
author = {Michelson, C},
abstractNote = {An electromagnetic release mechanism is offered that may be used, for example, for supporting a safety rod for a nuclear reactor. The release mechanism is designed to have a large excess holding force and a rapid, uniform, and dependable release. The fast release is accomplished by providing the electromagnet with slotttd polts separated by an insulating potting resin, and by constructing the poles with a ferro-nickel alloy. The combination of these two features materially reduces the eddy current power density whenever the magnetic field changes during a release operation. In addition to these features, the design of the armature is such as to provide ready entrance of fluid into any void that might tend to form during release of the armature. This also improves the release time for the mechanism. The large holding force for the mechanism is accomplished by providing a small, selected, uniform air gap between the inner pole piece and the armature.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {9}
}