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Title: High temperature control rod assembly

Abstract

A high temperature nuclear control rod assembly comprises a plurality of substantially cylindrical segments flexibly joined together in succession by ball joints. The segments are made of a high temperature graphite or carbon-carbon composite. The segment includes a hollow cylindrical sleeve which has an opening for receiving neutron-absorbing material in the form of pellets or compacted rings. The sleeve has a threaded sleeve bore and outer threaded surface. A cylindrical support post has a threaded shaft at one end which is threadably engaged with the sleeve bore to rigidly couple the support post to the sleeve. The other end of the post is formed with a ball portion. A hollow cylindrical collar has an inner threaded surface engageable with the outer threaded surface of the sleeve to rigidly couple the collar to the sleeve. the collar also has a socket portion which cooperates with the ball portion to flexibly connect segments together to form a ball and socket-type joint. In another embodiment, the segment comprises a support member which has a threaded shaft portion and a ball surface portion. The threaded shaft portion is engageable with an inner threaded surface of a ring for rigidly coupling the support member tomore » the ring. The ring in turn has an outer surface at one end which is threadably engageably with a hollow cylindrical sleeve. The other end of the sleeve is formed with a socket portion for engagement with a ball portion of the support member. In yet another embodiment, a secondary rod is slidably inserted in a hollow channel through the center of the segment to provide additional strength. A method for controlling a nuclear reactor utilizing the control rod assembly is also included.« less

Inventors:
 [1]
  1. (Solana Beach, CA)
Publication Date:
Research Org.:
GENERAL ATOMICS
OSTI Identifier:
868100
Patent Number(s):
US 5075072
Assignee:
General Atomic (San Diego, CA) OSTI
DOE Contract Number:
AC03-88SF17367
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
temperature; control; rod; assembly; nuclear; comprises; plurality; substantially; cylindrical; segments; flexibly; joined; succession; ball; joints; graphite; carbon-carbon; composite; segment; hollow; sleeve; receiving; neutron-absorbing; material; form; pellets; compacted; rings; threaded; bore; outer; surface; support; post; shaft; threadably; engaged; rigidly; couple; formed; portion; collar; inner; engageable; socket; cooperates; connect; socket-type; joint; embodiment; coupling; engageably; engagement; secondary; slidably; inserted; channel; center; provide; additional; strength; method; controlling; reactor; utilizing; included; threaded surface; neutron-absorbing material; temperature control; hollow cylindrical; rod assembly; assembly comprises; provide additional; surface portion; absorbing material; control rod; nuclear reactor; outer surface; carbon composite; substantially cylindrical; reactor utilizing; threadably engaged; segment comprises; shaft portion; cylindrical sleeve; nuclear control; hollow channel; temperature nuclear; temperature graphite; threadably engage; sorbing material; ball joint; carbon-carbon composite; /376/

Citation Formats

Vollman, Russell E. High temperature control rod assembly. United States: N. p., 1991. Web.
Vollman, Russell E. High temperature control rod assembly. United States.
Vollman, Russell E. Tue . "High temperature control rod assembly". United States. doi:. https://www.osti.gov/servlets/purl/868100.
@article{osti_868100,
title = {High temperature control rod assembly},
author = {Vollman, Russell E.},
abstractNote = {A high temperature nuclear control rod assembly comprises a plurality of substantially cylindrical segments flexibly joined together in succession by ball joints. The segments are made of a high temperature graphite or carbon-carbon composite. The segment includes a hollow cylindrical sleeve which has an opening for receiving neutron-absorbing material in the form of pellets or compacted rings. The sleeve has a threaded sleeve bore and outer threaded surface. A cylindrical support post has a threaded shaft at one end which is threadably engaged with the sleeve bore to rigidly couple the support post to the sleeve. The other end of the post is formed with a ball portion. A hollow cylindrical collar has an inner threaded surface engageable with the outer threaded surface of the sleeve to rigidly couple the collar to the sleeve. the collar also has a socket portion which cooperates with the ball portion to flexibly connect segments together to form a ball and socket-type joint. In another embodiment, the segment comprises a support member which has a threaded shaft portion and a ball surface portion. The threaded shaft portion is engageable with an inner threaded surface of a ring for rigidly coupling the support member to the ring. The ring in turn has an outer surface at one end which is threadably engageably with a hollow cylindrical sleeve. The other end of the sleeve is formed with a socket portion for engagement with a ball portion of the support member. In yet another embodiment, a secondary rod is slidably inserted in a hollow channel through the center of the segment to provide additional strength. A method for controlling a nuclear reactor utilizing the control rod assembly is also included.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}

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