IT1263338B - Smorzatore di vibrazioni per smorzare la vibrazione di un elemento tubolare - Google Patents

Smorzatore di vibrazioni per smorzare la vibrazione di un elemento tubolare

Info

Publication number
IT1263338B
IT1263338B ITPD930058A ITPD930058A IT1263338B IT 1263338 B IT1263338 B IT 1263338B IT PD930058 A ITPD930058 A IT PD930058A IT PD930058 A ITPD930058 A IT PD930058A IT 1263338 B IT1263338 B IT 1263338B
Authority
IT
Italy
Prior art keywords
tube
instrumentation tube
vibration
instrumentation
sleeve
Prior art date
Application number
ITPD930058A
Other languages
English (en)
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ITPD930058A0 publication Critical patent/ITPD930058A0/it
Publication of ITPD930058A1 publication Critical patent/ITPD930058A1/it
Application granted granted Critical
Publication of IT1263338B publication Critical patent/IT1263338B/it

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • F16F7/116—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on metal springs
    • 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)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mechanical Engineering (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

Smorzatore di vibrazioni per smorzare la vibrazione di un elemento tubolare, come ad esempio un tubo di strumentazione (170) del tipo presente tipicamente in contenitori e recipienti sotto pressione (20) di reattori nucleari. Il tubo di strumentazione è ricevuto in un altro elemento tubolare, come ad esempio un tubo a manicotto di guida (270). Lo smorzatore di vibrazioni comprende un manicotto anulare (320) che è fissabile alla superficie interna (280) del tubo a manicotto e che è dimensionato per circondare un tubo di strumentazione. Depressioni (370) sono fissate alla parete interna (330) del manicotto per supportare radialmente il tubo di strumentazione. La parete del manicotto ha un elemento elastico flessibile (380) disposto di fronte alle concavità per sollecitare il tubo della strumentazione in attestatura con le concavità. La vibrazione indotta dal flusso nel tubo di strumentazione farà sì che esso si muova annullando il contatto con le concavità ed impegni inoltre l'elemento elastico, che si fletterà di una quantità predeterminata ed eserciterà una forza di reazione sul tubo di strumentazione per il limitare il suo movimento. La forza reattiva esercitata sul tubo di strumentazione sarà sufficiente a farlo ritornare alla sua posizione assiale originale all'interno del tubo. In questo modo, la vibrazione del tubo di strumentazione è smorzata in modo tale che le misurazioni dei valori fisici del nocciolo sono accurate e che il tubo di strumentazione non subirà usura contro la superficie interna del tubo a manicotto di guida.
ITPD930058A 1992-03-18 1993-03-17 Smorzatore di vibrazioni per smorzare la vibrazione di un elemento tubolare IT1263338B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/853,556 US5357547A (en) 1992-03-18 1992-03-18 Vibration dampener for dampening vibration of a tubular member

Publications (3)

Publication Number Publication Date
ITPD930058A0 ITPD930058A0 (it) 1993-03-17
ITPD930058A1 ITPD930058A1 (it) 1994-09-17
IT1263338B true IT1263338B (it) 1996-08-05

Family

ID=25316344

Family Applications (1)

Application Number Title Priority Date Filing Date
ITPD930058A IT1263338B (it) 1992-03-18 1993-03-17 Smorzatore di vibrazioni per smorzare la vibrazione di un elemento tubolare

Country Status (6)

Country Link
US (1) US5357547A (it)
JP (1) JPH0643286A (it)
KR (1) KR930020480A (it)
CN (1) CN1078822A (it)
GB (1) GB2265686B (it)
IT (1) IT1263338B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734943B1 (fr) * 1995-05-30 1997-08-22 Framatome Sa Grappe de commande pour un reacteur nucleaire
US6526116B1 (en) * 1997-07-02 2003-02-25 Westinghouse Electric Company Llc Nuclear fuel assembly with hydraulically balanced mixing vanes
US7551705B2 (en) * 2003-12-11 2009-06-23 Areva Np, Inc. Fuel assembly top nozzle repair sleeve and method for repairing a fuel assembly
JP4898318B2 (ja) * 2005-06-29 2012-03-14 三菱重工業株式会社 炉内計装案内管支持装置
US7589447B2 (en) * 2006-12-05 2009-09-15 Honeywell International Inc. High speed aerospace generator resilient mount
JP4599410B2 (ja) 2007-02-28 2010-12-15 三菱重工業株式会社 計装案内管流動振動抑制構造
US7995701B2 (en) 2008-05-21 2011-08-09 Westinghouse Electric Company Llc Nuclear core component hold-down assembly
US10438709B2 (en) * 2015-12-31 2019-10-08 Westinghouse Electric Company Llc Measurement apparatus for determining compressive loading that will be applied to a fuel rod of a pressurized water reactor
KR101716837B1 (ko) * 2016-01-25 2017-03-15 한국전력기술 주식회사 중소형 원자로압력용기 케이블 관통관 밀봉장치
US11817226B2 (en) * 2021-11-10 2023-11-14 Westinghouse Electric Company Llc Bottom nozzle with protective insert

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784494A (en) * 1954-08-25 1957-10-09 Hardinge Brothers Inc Improvements in feed chucks for automatic screw machines and the like
US4504437A (en) * 1982-05-26 1985-03-12 Westinghouse Electric Corp. Seismic restraint means for a nuclear radiation detector mounted in a tubular thimble
US4702881A (en) * 1985-04-02 1987-10-27 Westinghouse Electric Corp. Nuclear reactor spacer grid
US4716004A (en) * 1986-02-06 1987-12-29 Westinghouse Electric Corp. Thimble guide extender
US4778647A (en) * 1986-02-14 1988-10-18 Westinghouse Electric Corp. Vibration-damping extender for a thimble guide
FR2597650B1 (fr) * 1986-04-22 1988-07-22 Fragema Framatome & Cogema Procede de chemisage de tube d'instrumentation d'assemblage combustible nucleaire et assemblage a tube chemise
FR2608307B1 (fr) * 1986-12-12 1990-07-27 Electricite De France Colonne d'instrumentation du coeur d'un reacteur nucleaire a eau pressurisee
JPS63181895U (it) * 1987-05-13 1988-11-24
US4839135A (en) * 1987-08-21 1989-06-13 Westinghouse Electric Corp. Anti-vibration flux thimble
US4990304A (en) * 1989-01-27 1991-02-05 Westinghouse Electric Corp. Instrumentation tube features for reduction of coolant flow-induced vibration of flux thimble tube

Also Published As

Publication number Publication date
US5357547A (en) 1994-10-18
ITPD930058A1 (it) 1994-09-17
GB2265686B (en) 1995-05-03
CN1078822A (zh) 1993-11-24
KR930020480A (ko) 1993-10-19
GB9305146D0 (en) 1993-04-28
JPH0643286A (ja) 1994-02-18
ITPD930058A0 (it) 1993-03-17
GB2265686A (en) 1993-10-06

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960329