ES331675A1 - A system for braking a moving mass - Google Patents

A system for braking a moving mass

Info

Publication number
ES331675A1
ES331675A1 ES331675A ES331675A ES331675A1 ES 331675 A1 ES331675 A1 ES 331675A1 ES 331675 A ES331675 A ES 331675A ES 331675 A ES331675 A ES 331675A ES 331675 A1 ES331675 A1 ES 331675A1
Authority
ES
Spain
Prior art keywords
control rod
braking
mass
rod
sectors
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
ES331675A
Other languages
Spanish (es)
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of ES331675A1 publication Critical patent/ES331675A1/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
    • G21C7/20—Disposition of shock-absorbing devices ; Braking 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)
  • Braking Arrangements (AREA)
  • Vibration Dampers (AREA)

Abstract

A system for braking a movable mass 1 comprises a guide element 2 and a braking part 6, rubbing members 10 for engaging the braking part, first resilient means 12 to urge the rubbing members into contact with the braking part and second resilient means 14 by which the rubbing members are coupled to the mass, the second resilient means, upon relative movement of the mass and the rubbing members induced by engagement of the latter with the braking part, being compressed to provide a further loading of the rubbing members on to the braking part. As shown the moving mass comprises e.g. a cylindrical control rod 1 movable at high speed in a nuclear reactor core 3, and the guide element comprises a rigid rod 2 which is secured to a stationary structure 3 and which has an upper zone 4, which allows unimpeded movement of the control rod 1, a wider lower braking zone 6, and a frusto-conical transition zone 7. The brake is housed in a easing 8 carried by the lower end of the control rod and includes braking elements in the form of cylindrical sectors 10 disposed around the rod 2. The sectors 10 are connected, adjacent their upper ends, by circlips 12, a stack 14 of ring springs 18, 19 with coacting conical surfaces being interposed between shoulders 16 on the lower ends of the sectors 10 and the base 15 of the control rod 1. The rings 18 are continuous, the rings 19 being split at 20. When the control rod 1 falls the brake sectors 10 pass freely over the upper zone 4 of the rod 2 to impinge upon the transition zone 7 and slow down the control rod 1. The momentum of the control rod 1 then imposes an axial compression force upon the stack of springs 18, 19, the rings 19 being radially contracted to force the sectors 10 into heavy clamping engagement with the lower zone 6, of the rod 2 so that the control rod is stopped rapidly. It is stated that braking forces, varying between 1 ton and 4 tons, or even more, have proved possible. The system could also be used with a mass driven, e.g. by an explosive charge, along a horizontal passage. In a modification the system may be used to brake a solid cylindrical mass in a hollow cylindrical guide element.
ES331675A 1965-09-28 1966-09-28 A system for braking a moving mass Expired ES331675A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR33008A FR1459145A (en) 1965-09-28 1965-09-28 Braking device

Publications (1)

Publication Number Publication Date
ES331675A1 true ES331675A1 (en) 1969-08-16

Family

ID=8589272

Family Applications (1)

Application Number Title Priority Date Filing Date
ES331675A Expired ES331675A1 (en) 1965-09-28 1966-09-28 A system for braking a moving mass

Country Status (8)

Country Link
BE (1) BE686541A (en)
CH (1) CH462967A (en)
DE (1) DE1286651B (en)
ES (1) ES331675A1 (en)
FR (1) FR1459145A (en)
GB (1) GB1140753A (en)
LU (1) LU52047A1 (en)
NL (1) NL6612613A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210768C2 (en) * 1982-03-24 1990-07-12 Bopp & Reuther Gmbh, 6800 Mannheim Safety valve with a friction device to suppress valve vibrations
GB2166381A (en) * 1984-11-02 1986-05-08 Tecnedil Srl Pneumatic hammer damping device
FR3041102B1 (en) 2015-09-10 2017-09-08 Schneider Electric Ind Sas DEVICE FOR CONTROLLING AN ELECTRICAL CONDUCTOR AND ELECTRICAL INSTALLATION COMPRISING SUCH A DEVICE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876867A (en) * 1946-11-21 1959-03-10 Thomas J O'donnell Brake device

Also Published As

Publication number Publication date
NL6612613A (en) 1967-03-29
FR1459145A (en) 1966-04-29
GB1140753A (en) 1969-01-22
LU52047A1 (en) 1966-11-27
DE1286651B (en) 1969-01-09
CH462967A (en) 1968-09-30
BE686541A (en) 1967-02-15

Similar Documents

Publication Publication Date Title
GB932439A (en) Improvements in devices for forming a resilient connection between two parts of structures
FR2317545A1 (en) DEVICE FOR VARIING THE DIAMETER OF A CYLINDER
ES453399A1 (en) Three-position actuator and apparatus incorporating same
ES331675A1 (en) A system for braking a moving mass
GB1202431A (en) Apparatus for compressing materials
GB1096459A (en) Cramping device
GB1443302A (en) Shield for a prestressed nuclear reactor pressure vessel
GB873891A (en) Coiler for metal strip with segmented drum
FR2252760A5 (en)
GB978443A (en) Braking device for falling objects
GB959652A (en) Vibratory grinding mill
GB1354051A (en) Control rod drive system
GB731515A (en) Improvements in the manufacture of non-cylindrical hollow rounded pre-stressed concrete elements such as aircraft elements
GB1358481A (en) Container incorporating a removable closure
GB1290058A (en)
SU1523371A1 (en) Arrangement for compacting pulverulent materials
SU692619A1 (en) Safety device for hydration cone crusher
GB921699A (en) Restraining means
GB855511A (en) Coiling drums
SU148012A1 (en) Disc Briquette Press
SU199798A1 (en)
SU817113A1 (en) Washing machine
ES392998A1 (en) Vertically and circularly displaceable support
SU808146A1 (en) Electromagnetic mill
GB1496234A (en) Honing tools for bores