GB1298641A - Anti-ejection latch - Google Patents

Anti-ejection latch

Info

Publication number
GB1298641A
GB1298641A GB319/71A GB31971A GB1298641A GB 1298641 A GB1298641 A GB 1298641A GB 319/71 A GB319/71 A GB 319/71A GB 31971 A GB31971 A GB 31971A GB 1298641 A GB1298641 A GB 1298641A
Authority
GB
United Kingdom
Prior art keywords
rod
solenoid
energized
latch
sleeve
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.)
Expired
Application number
GB319/71A
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.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
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
Application filed by Combustion Engineering Inc filed Critical Combustion Engineering Inc
Publication of GB1298641A publication Critical patent/GB1298641A/en
Expired legal-status Critical Current

Links

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
    • 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)
  • Load-Engaging Elements For Cranes (AREA)
  • Manipulator (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

1298641 Ratchet mechanism COMBUSTION ENG Inc 4 Jan 1971 [5 Jan 1970] 319/71 Heading F2Q [Also in Division G6] A nuclear reactor control rod anti-ejection lock for use with magnetic jacking type control rod drives has a spring-pressed pawl 60 which ratchets to allow insertion of the control rod 12 but prevents ejection or withdrawal unless a latch mechanism of the drive is in latched position. The drive comprises two axially spaced, axially movable drive members 34, 36 around the rod 12 and solenoids A, C, E selectively alternately moving the members 34, 36 in two opposite directions along or with the rod 10. Each member 34, 36 carries a latch 38, 48 and an axially movable sleeve 40, 50, selectively operated by solenoids B, D, to operate the latch to connect or disconnect the rod and respective drive member. A push-rod 80, 82 connects each sleeve 40, 50 and the pawl 60 and disables the pawl when either sleeve 40, 50 is in position to latch the control rod and a drive member. Starting from the position shown in which all the solenoids are de-energized and the control rod 12 has dropped under gravity, and in which both moving members 34, 36 and both sleeves 40, 50 are in the lower position, in order to lift the control rod the solenoid D is first energized to lift sleeve 50 and force the latch 48 inwardly to grip the rod 12, also to raise push-rod 82 and disable the pawl 60. Solenoid C is then energized to lift the lower moving member 36 and the rod 12 latched thereto. Actuation of solenoid B follows to lift sleeve 40 and force the latch 38 into gripping relation with the rod 12. Both latches are now in gripping relation. Solenoid D is then de-energized to release the latch 48 and allow sleeve 50 to drop and solenoid C is de-energized. Solenoid A is then energized to raise the upper moving member 34 together with the rod 12 and solenoid E is energized to draw the lower moving member 36 down. Solenoid D is now energized so as again to activate the latch 48 and solenoid B is then deenergized to release the latch 38 and solenoids A and E are de-energized. Solenoid C is then energized to lift the lower moving member 36 and the rod 12 and begin another cycle. The control rod 12 is thus lifted in a step-by-step motion.
GB319/71A 1970-01-05 1971-01-04 Anti-ejection latch Expired GB1298641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US000516A US3902963A (en) 1970-01-05 1970-01-05 Anti-ejection latch

Publications (1)

Publication Number Publication Date
GB1298641A true GB1298641A (en) 1972-12-06

Family

ID=21691845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB319/71A Expired GB1298641A (en) 1970-01-05 1971-01-04 Anti-ejection latch

Country Status (4)

Country Link
US (1) US3902963A (en)
DE (1) DE7100063U (en)
FR (1) FR2075928B3 (en)
GB (1) GB1298641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2416840A1 (en) * 1973-04-17 1974-11-07 Westinghouse Electric Corp DEVICE FOR THE RIGHT DRIVE OF A LONGITUDINAL COMPONENT

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432197A1 (en) * 1978-07-27 1980-02-22 Commissariat Energie Atomique DEVICE FOR CONTROLLING A CONTROL BAR OF A NUCLEAR REACTOR PROVIDED WITH EJECTION AND CAPPING SAFEGUARDS
FR2459535B1 (en) * 1979-06-18 1986-08-08 Framatome Sa CYCLIC MOVEMENT FINGER MECHANISM FOR CONTROLLING A NUCLEAR REACTOR
FR2474743B1 (en) * 1980-01-24 1986-10-31 Jeumont Schneider ELECTROMAGNETIC DEVICE OF THE SECURITY SCREW-NUT TYPE
FR2525801A1 (en) * 1982-04-26 1983-10-28 Commissariat Energie Atomique UNLOCKABLE ANTI-EJECTION DEVICE FOR NUCLEAR REACTOR CONTROL BARS
US4597934A (en) * 1983-10-06 1986-07-01 The United States Of America As Represented By The United States Department Of Energy Multi-function magnetic jack control drive mechanism
FR2575582B1 (en) * 1984-12-28 1987-03-06 Framatome Sa DEVICE AND METHOD FOR HANGING A STEERING ROD FOR A CONTROL CLUSTER IN A NUCLEAR REACTOR
FR2935832B1 (en) * 2008-09-08 2010-10-08 Areva Nc DEVICE FOR PREVENTING COMBUSTIBLE ELEMENTS, CLAMP AND HANDLING SYSTEM THEREFOR
KR101553020B1 (en) * 2014-05-30 2015-09-14 한국전력기술 주식회사 Magnetic Jack Type In-Vessel Control Element Drive Mechanism
KR101599003B1 (en) * 2014-11-13 2016-03-02 한국전력기술 주식회사 Magnetic Jack Type Control Element Drive Mechanism for Precision Position Control of the Control Element Assembly
CN106898388B (en) * 2017-03-09 2018-07-24 华北电力大学 A kind of device for preventing reactor from control rod ejection accident occurs

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3066763A (en) * 1961-05-11 1962-12-04 Jr William G Brussalis Inverted control rod lock-in device
US3158766A (en) * 1962-04-30 1964-11-24 Westinghouse Electric Corp Gripper type linear motion device
US3299302A (en) * 1964-08-20 1967-01-17 Westinghouse Electric Corp Linear motion device
US3445690A (en) * 1965-04-05 1969-05-20 Westinghouse Electric Corp Linear motion device and improved housing therefor
US3486095A (en) * 1965-05-06 1969-12-23 Westinghouse Electric Corp Cycle control for linear motion device
US3480807A (en) * 1967-04-11 1969-11-25 Westinghouse Electric Corp Linear motion devices
US3572161A (en) * 1969-07-08 1971-03-23 Combustion Eng Control rod antiejection latch
BE755670A (en) * 1969-09-05 1971-03-03 Westinghouse Electric Corp CONTROL SYSTEM FOR A LINEAR MOVEMENT DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2416840A1 (en) * 1973-04-17 1974-11-07 Westinghouse Electric Corp DEVICE FOR THE RIGHT DRIVE OF A LONGITUDINAL COMPONENT

Also Published As

Publication number Publication date
US3902963A (en) 1975-09-02
DE7100063U (en) 1971-05-27
FR2075928B3 (en) 1973-10-19
FR2075928A7 (en) 1971-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees