GB786486A - Improvements in or relating to nut and screw mechanisms - Google Patents

Improvements in or relating to nut and screw mechanisms

Info

Publication number
GB786486A
GB786486A GB13669/54A GB1366954A GB786486A GB 786486 A GB786486 A GB 786486A GB 13669/54 A GB13669/54 A GB 13669/54A GB 1366954 A GB1366954 A GB 1366954A GB 786486 A GB786486 A GB 786486A
Authority
GB
United Kingdom
Prior art keywords
nut
screw
magnet
drive
stop
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
GB13669/54A
Inventor
John Alexander Forbes Glass
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB13669/54A priority Critical patent/GB786486A/en
Priority to US507525A priority patent/US2841026A/en
Priority to FR1161179D priority patent/FR1161179A/en
Priority to NL211299A priority patent/NL99908C/xx
Priority to BE551683A priority patent/BE551683A/xx
Priority to GB30853/56A priority patent/GB821655A/en
Publication of GB786486A publication Critical patent/GB786486A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
    • G21C19/22—Arrangements for obtaining access to the interior of a pressure vessel whilst the reactor is operating
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Transmission Devices (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

786,486. Screw-and-nut gearing. UNITED KINGDON ATOMIC ENERGY AUTHORITY. May 9, 1955 [May 11, 1954], No. 13669/54. Class 80 (3). [Also in Groups XXXV and XL (a)] Screw - and - nut mechanism, particularly adapted for controlling the position of a fissile element 10 in a nuclear reactor core 11, comprises a nut member 17 which is attached by tubular part 18 to a tube 15 working in a guide 16 and supporting the element 10 by a rod 12 on an arm 14 secured to tube 15. Co-operating with the nut 17 by a ball-bearing thread such as described in Specification 707,017 is a hollow screw member 19 which has a relatively rotatable head 21 thereon. This screw member is adapted to be rotated through a slidable splined connection by a shaft 23 driven through a magnetic clutch 24. In Fig. 1, the nut 17 is in its lowest position against a stop 30, corresponding to the fully withdrawn position of the reactor element 10, and the screw 19 is screwed down into the nut. On rotating the screw in one direction it is screwed out of nut 17 until it engages with its head 21 a stop constituted by a magnet 26, Fig. 2, the clutch 24 allowing the drive to slip. The nut is still left in its lower position, but if the drive of shaft 23 is reversed it is raised by the screw until it also engages the magnet 26, Fig. 3, which position corresponds to the full insertion of the element 10. By again reversing the drive the nut is screwed down. The arrangement provides an emergency control to withdraw the element 10 quickly by de-energization of the magnet 26 which allows the nut to fall with the screw from any position it may be in on to the stop 30.
GB13669/54A 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms Expired GB786486A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB13669/54A GB786486A (en) 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms
US507525A US2841026A (en) 1954-05-11 1955-05-11 Nut screw mechanisms
FR1161179D FR1161179A (en) 1954-05-11 1956-10-08 Nut and screw mechanisms
NL211299A NL99908C (en) 1954-05-11 1956-10-10
BE551683A BE551683A (en) 1954-05-11 1956-10-10
GB30853/56A GB821655A (en) 1954-05-11 1956-10-10 Improvements in or relating to nuclear reactors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13669/54A GB786486A (en) 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms

Publications (1)

Publication Number Publication Date
GB786486A true GB786486A (en) 1957-11-20

Family

ID=10027257

Family Applications (2)

Application Number Title Priority Date Filing Date
GB13669/54A Expired GB786486A (en) 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms
GB30853/56A Expired GB821655A (en) 1954-05-11 1956-10-10 Improvements in or relating to nuclear reactors

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB30853/56A Expired GB821655A (en) 1954-05-11 1956-10-10 Improvements in or relating to nuclear reactors

Country Status (4)

Country Link
BE (1) BE551683A (en)
FR (1) FR1161179A (en)
GB (2) GB786486A (en)
NL (1) NL99908C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053104A (en) * 1959-08-06 1962-09-11 Creusot Forges Ateliers Device for producing regulated rectilinear movements
DE1142423B (en) * 1958-09-08 1963-01-17 Nuclear Power Plant Company Lt Safety device in nuclear reactors
DE1154883B (en) * 1959-07-09 1963-09-26 Havilland Engine Co Ltd Actuating device for a control rod of a nuclear reactor
DE1181333B (en) * 1960-02-05 1964-11-12 Commissariat Energie Atomique Actuating device for control and safety rods in nuclear reactors
DE1184865B (en) * 1959-08-06 1965-01-07 Soc D Forges Et Ateliers Du Cr Device for generating linear controlled movements
CN102117668A (en) * 2009-12-31 2011-07-06 中国核动力研究设计院 Reactor core unloading tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL124296C (en) * 1961-04-10 1900-01-01

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142423B (en) * 1958-09-08 1963-01-17 Nuclear Power Plant Company Lt Safety device in nuclear reactors
DE1154883B (en) * 1959-07-09 1963-09-26 Havilland Engine Co Ltd Actuating device for a control rod of a nuclear reactor
US3053104A (en) * 1959-08-06 1962-09-11 Creusot Forges Ateliers Device for producing regulated rectilinear movements
DE1184865B (en) * 1959-08-06 1965-01-07 Soc D Forges Et Ateliers Du Cr Device for generating linear controlled movements
DE1181333B (en) * 1960-02-05 1964-11-12 Commissariat Energie Atomique Actuating device for control and safety rods in nuclear reactors
CN102117668A (en) * 2009-12-31 2011-07-06 中国核动力研究设计院 Reactor core unloading tool
CN102117668B (en) * 2009-12-31 2014-08-27 中国核动力研究设计院 Reactor core unloading tool

Also Published As

Publication number Publication date
NL211299A (en) 1961-07-17
GB821655A (en) 1959-10-14
BE551683A (en) 1956-10-31
FR1161179A (en) 1958-08-22
NL99908C (en) 1961-12-15

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