GB2568611A - Moveable isolated rod couplings for use in a nuclear reactor control rod drive - Google Patents

Moveable isolated rod couplings for use in a nuclear reactor control rod drive Download PDF

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Publication number
GB2568611A
GB2568611A GB1900821.8A GB201900821A GB2568611A GB 2568611 A GB2568611 A GB 2568611A GB 201900821 A GB201900821 A GB 201900821A GB 2568611 A GB2568611 A GB 2568611A
Authority
GB
United Kingdom
Prior art keywords
control rod
isolation barrier
overtravel
control element
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1900821.8A
Other versions
GB201900821D0 (en
GB2568611B (en
Inventor
A Morgan Kenneth
L Major David
M Brown Randy
Alan Deaver Gerald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GE Hitachi Nuclear Energy Americas LLC
Original Assignee
GE Hitachi Nuclear Energy Americas LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US15/644,908 external-priority patent/US10872703B2/en
Application filed by GE Hitachi Nuclear Energy Americas LLC filed Critical GE Hitachi Nuclear Energy Americas LLC
Publication of GB201900821D0 publication Critical patent/GB201900821D0/en
Publication of GB2568611A publication Critical patent/GB2568611A/en
Application granted granted Critical
Publication of GB2568611B publication Critical patent/GB2568611B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/12—Means for moving control elements to desired position
    • G21C7/14—Mechanical drive arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • 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
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Transmission Devices (AREA)
  • Surgical Instruments (AREA)

Abstract

Control rod drives include linearly-moveable control elements inside an isolation barrier. Control rod drives move the control element through secured magnetic elements subject to magnetic fields. Induction coils may generate magnetic fields and be moveable across a full stroke length of the control element in the reactor. A motor may spin a linear screw to move the induction coils on a vertical travel nut. A control rod assembly may house the magnetic elements and directly, removably join to the control element. The control rod assembly may lock with magnetic overtravel latches inside the isolation barrier to maintain an overtravel position. Overtravel release coils outside the isolation barrier may release the latches to leave the overtravel position. Operation includes moving the induction coils with a linear screw to drive the control element to desired insertion points, including full insertion by gravity following de-energization. No direct connection may penetrate the isolation barrier.

Description

(54) Title of the Invention: Moveable isolated rod couplings for use in a nuclear reactor control rod drive Abstract Title: Moveable isolated rod couplings for use in a nuclear reactor control rod drive (57) Control rod drives include linearly-moveable control elements inside an isolation barrier. Control rod drives move the control element through secured magnetic elements subject to magnetic fields. Induction coils may generate magnetic fields and be moveable across a full stroke length of the control element in the reactor. A motor may spin a linear screw to move the induction coils on a vertical travel nut. A control rod assembly may house the magnetic elements and directly, removably join to the control element. The control rod assembly may lock with magnetic overtravel latches inside the isolation barrier to maintain an overtravel position. Overtravel release coils outside the isolation barrier may release the latches to leave the overtravel position. Operation includes moving the induction coils with a linear screw to drive the control element to desired insertion points, including full insertion by gravity following deenergization. No direct connection may penetrate the isolation barrier.

Claims (1)

  1. Control rod drives include linearly-moveable control elements inside an isolation barrier. Control rod drives move the control element through secured magnetic elements subject to magnetic fields. Induction coils may generate magnetic fields and be moveable across a full stroke length of the control element in the reactor. A motor may spin a linear screw to move the induction coils on a vertical travel nut. A control rod assembly may house the magnetic elements and directly, removably join to the control element. The control rod assembly may lock with magnetic overtravel latches inside the isolation barrier to maintain an overtravel position. Overtravel release coils outside the isolation barrier may release the latches to leave the overtravel position. Operation includes moving the induction coils with a linear screw to drive the control element to desired insertion points, including full insertion by gravity following deenergization. No direct connection may penetrate the isolation barrier.
GB1900821.8A 2016-07-13 2017-07-13 Moveable isolated rod couplings for use in a nuclear reactor control rod drive Active GB2568611B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201662361628P 2016-07-13 2016-07-13
US15/644,908 US10872703B2 (en) 2016-07-13 2017-07-10 Moveable isolated rod couplings for use in a nuclear reactor control rod drive
PCT/US2017/042023 WO2018013872A2 (en) 2016-07-13 2017-07-13 Moveable isolated rod couplings for use in a nuclear reactor control rod drive

Publications (3)

Publication Number Publication Date
GB201900821D0 GB201900821D0 (en) 2019-03-13
GB2568611A true GB2568611A (en) 2019-05-22
GB2568611B GB2568611B (en) 2022-03-09

Family

ID=60953377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1900821.8A Active GB2568611B (en) 2016-07-13 2017-07-13 Moveable isolated rod couplings for use in a nuclear reactor control rod drive

Country Status (4)

Country Link
JP (1) JP6895510B2 (en)
CA (2) CA3155316C (en)
GB (1) GB2568611B (en)
WO (1) WO2018013872A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112582086A (en) * 2020-12-11 2021-03-30 中广核研究院有限公司 Control rod driving mechanism with safety protection function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168192A (en) * 1981-04-09 1982-10-16 Nippon Kokan Kk Movable coil type control rod drive mechanism of reactor
JPS61215992A (en) * 1985-03-22 1986-09-25 日本鋼管株式会社 Method of controlling movable coil type control-rod drive

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941653A (en) 1968-03-08 1976-03-02 Westinghouse Electric Corporation Control rod drive shaft latch
US3992255A (en) 1974-01-18 1976-11-16 Westinghouse Electric Corporation Control rod drive mechanism for a nuclear reactor
UST942002I4 (en) 1974-02-19 1976-01-06
US3933581A (en) 1974-06-04 1976-01-20 The United States Of America As Represented By The United States Energy Research And Development Administration Control rod drive for reactor shutdown
BE838037A (en) 1975-02-11 1976-05-14 PRESSURE TANK NUCLEAR REACTOR ADJUSTMENT BAR CONTROL
US4044622A (en) 1975-02-18 1977-08-30 Matthews John C Anti-ejection system for control rod drives
JPS51116393A (en) 1975-04-04 1976-10-13 Hitachi Ltd A control rod driving mechanism
FR2459535B1 (en) 1979-06-18 1986-08-08 Framatome Sa CYCLIC MOVEMENT FINGER MECHANISM FOR CONTROLLING A NUCLEAR REACTOR
FR2461334A1 (en) 1979-07-11 1981-01-30 Framatome Sa PINION AND RACK MECHANISM FOR DISPLACING A NEUTRON ABSORBING ASSEMBLY IN A NUCLEAR REACTOR
US4288898A (en) 1979-10-22 1981-09-15 The Babcock & Wilcox Company Control rod drive mechanism closure device
US4423002A (en) 1979-12-19 1983-12-27 Framatome Apparatus for controlling a nuclear reactor by vertical displacement of a unit absorbing neutrons
US4518559A (en) 1982-07-08 1985-05-21 General Electric Company Control of nuclear reactors
US4484093A (en) 1982-12-08 1984-11-20 The United States Of America As Represented By The United States Department Of Energy Linear motion device and method for inserting and withdrawing control rods
US5276719A (en) 1991-08-14 1994-01-04 Siemens Aktiengesellschaft Hydraulic control rod drive for a nuclear reactor
US5307384A (en) * 1992-12-16 1994-04-26 Westinghouse Electric Corp. Segmented coil assembly for control rod drive
US5428873A (en) 1993-04-29 1995-07-04 Bw/Ip International, Inc. Ball Latch mechanism
US5517536A (en) 1994-08-24 1996-05-14 General Electric Company Magnetic coupling device for control rod drive
US5778034A (en) 1995-12-26 1998-07-07 Kabushiki Kaisha Toshiba Control rod drive mechanism
EP2002198B1 (en) 2006-03-30 2013-04-24 Raytheon Company Methods and apparatus for integrated locked thruster mechanism
US20080123795A1 (en) 2006-11-28 2008-05-29 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Controllable long term operation of a nuclear reactor
JP5171498B2 (en) 2008-09-12 2013-03-27 株式会社東芝 Control rod drive mechanism
US8811562B2 (en) 2010-03-12 2014-08-19 Babcock & Wilcox Nuclear Operations Group, Inc. Control rod drive mechanism for nuclear reactor
JP5537225B2 (en) 2010-03-31 2014-07-02 日立Ｇｅニュークリア・エナジー株式会社 Improved control rod drive mechanism handling device and method of handling the device
US9336910B2 (en) 2010-10-07 2016-05-10 Bwxt Nuclear Energy, Inc. Control rod/control rod drive mechanism couplings
JP6184346B2 (en) 2014-03-07 2017-08-23 日立Ｇｅニュークリア・エナジー株式会社 Control rod drive mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168192A (en) * 1981-04-09 1982-10-16 Nippon Kokan Kk Movable coil type control rod drive mechanism of reactor
JPS61215992A (en) * 1985-03-22 1986-09-25 日本鋼管株式会社 Method of controlling movable coil type control-rod drive

Also Published As

Publication number Publication date
CA3029845C (en) 2022-08-09
CA3029845A1 (en) 2018-01-18
WO2018013872A3 (en) 2018-02-22
GB201900821D0 (en) 2019-03-13
GB2568611B (en) 2022-03-09
CA3155316A1 (en) 2018-01-18
WO2018013872A2 (en) 2018-01-18
JP2019534990A (en) 2019-12-05
CA3155316C (en) 2023-10-03
JP6895510B2 (en) 2021-06-30

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