FR2087100A1 - Anti backlash ball nut for nuclear fuel rod positioning screws - Google Patents

Anti backlash ball nut for nuclear fuel rod positioning screws

Info

Publication number
FR2087100A1
FR2087100A1 FR7016305A FR7016305A FR2087100A1 FR 2087100 A1 FR2087100 A1 FR 2087100A1 FR 7016305 A FR7016305 A FR 7016305A FR 7016305 A FR7016305 A FR 7016305A FR 2087100 A1 FR2087100 A1 FR 2087100A1
Authority
FR
France
Prior art keywords
nuclear fuel
fuel rod
rod positioning
ball nut
positioning screws
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.)
Withdrawn
Application number
FR7016305A
Other languages
French (fr)
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
Priority to FR7016305A priority Critical patent/FR2087100A1/en
Priority to DE19712122284 priority patent/DE2122284C/en
Publication of FR2087100A1 publication Critical patent/FR2087100A1/en
Withdrawn legal-status Critical Current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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/002—Elastic or yielding linear bearings or bearing supports
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
    • 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)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Transmission Devices (AREA)

Abstract

The nut for use on lead screws in nuclear fuel rod positioning or radioactivity mapping machine traverses, consists of two sets each of two ball races and two outer guide tubes arranged coaxial with the axis of the lead screw and symmetrically about a plane perp. to that axis. Each guide tube has a tapered longitudinal slit and one is fixed to the housing both axially and radially whilst the other is fixed axially but free to rotate with the lead screw. The prevention of backlash increases setting accuracy.
FR7016305A 1970-05-05 1970-05-05 Anti backlash ball nut for nuclear fuel rod positioning screws Withdrawn FR2087100A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7016305A FR2087100A1 (en) 1970-05-05 1970-05-05 Anti backlash ball nut for nuclear fuel rod positioning screws
DE19712122284 DE2122284C (en) 1970-05-05 1971-05-05 Guide device in a test facility for cylindrical rods with a helical guide rib, e.g. nuclear reactor fuel rods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7016305A FR2087100A1 (en) 1970-05-05 1970-05-05 Anti backlash ball nut for nuclear fuel rod positioning screws

Publications (1)

Publication Number Publication Date
FR2087100A1 true FR2087100A1 (en) 1971-12-31

Family

ID=9055071

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7016305A Withdrawn FR2087100A1 (en) 1970-05-05 1970-05-05 Anti backlash ball nut for nuclear fuel rod positioning screws

Country Status (1)

Country Link
FR (1) FR2087100A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416685A1 (en) * 1978-02-08 1979-09-07 Holmgren Ortoped GUIDING DEVICE WITH SCREW AND NUT ANTIFRICTION ASSEMBLY, AND PROSTHESIS EQUIPPED WITH SUCH A DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416685A1 (en) * 1978-02-08 1979-09-07 Holmgren Ortoped GUIDING DEVICE WITH SCREW AND NUT ANTIFRICTION ASSEMBLY, AND PROSTHESIS EQUIPPED WITH SUCH A DEVICE

Also Published As

Publication number Publication date
DE2122284A1 (en) 1971-11-18
DE2122284B2 (en) 1973-01-25

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Legal Events

Date Code Title Description
ST Notification of lapse