JPS55163348A - Multistage hydraulic shock absorber - Google Patents

Multistage hydraulic shock absorber

Info

Publication number
JPS55163348A
JPS55163348A JP6890379A JP6890379A JPS55163348A JP S55163348 A JPS55163348 A JP S55163348A JP 6890379 A JP6890379 A JP 6890379A JP 6890379 A JP6890379 A JP 6890379A JP S55163348 A JPS55163348 A JP S55163348A
Authority
JP
Japan
Prior art keywords
shock absorber
cylinder
pool
orifices
sucked
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.)
Pending
Application number
JP6890379A
Other languages
Japanese (ja)
Inventor
Keizo Wase
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6890379A priority Critical patent/JPS55163348A/en
Publication of JPS55163348A publication Critical patent/JPS55163348A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/07—Storage racks; Storage pools
    • 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PURPOSE:To prevent clad and other elements, deposited on the bottom of a fuel storage pool at an atomic power plant, from sucked into a cylinder of a multistage hydraulic shock absorber set in the pool at the time of resetting, by setting a one- way valve in the cylinder. CONSTITUTION:A multistage hydrualic shock absorber provides shock absorbing effect in the following mechanism: when a cask is suspended above an upper plate 8 at the device in a state of extension, upper and center cylinder 6a, 6b are alowly dropped against springs 16, 16 and liquid in hollow sections 23, 24 is discharged outside through orifices 18, 19. A one-way valve 25 is set to the upper portion in the upper cylinder 6a. As both cylinders 6a, 6b of the shock absorber are reset upward, the one-way vlave 25 is opened to let in water and prevents clad and other elements deposited on the pool bottom from being sucked into the cylinders through the orifices 18, 19, which improves reliability of the shock absorber.
JP6890379A 1979-06-04 1979-06-04 Multistage hydraulic shock absorber Pending JPS55163348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6890379A JPS55163348A (en) 1979-06-04 1979-06-04 Multistage hydraulic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6890379A JPS55163348A (en) 1979-06-04 1979-06-04 Multistage hydraulic shock absorber

Publications (1)

Publication Number Publication Date
JPS55163348A true JPS55163348A (en) 1980-12-19

Family

ID=13387068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6890379A Pending JPS55163348A (en) 1979-06-04 1979-06-04 Multistage hydraulic shock absorber

Country Status (1)

Country Link
JP (1) JPS55163348A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858384U (en) * 1981-10-15 1983-04-20 株式会社東芝 Electronic equipment panel equipment
US5390903A (en) * 1993-09-03 1995-02-21 Connell Limited Partnership Variable force die spring assembly
BE1011152A3 (en) * 1997-05-13 1999-05-04 Belgonucleaire Sa Assembly grouping device
WO2000002206A3 (en) * 1998-06-30 2000-04-13 Siemens Ag Storage rack for fuel elements

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858384U (en) * 1981-10-15 1983-04-20 株式会社東芝 Electronic equipment panel equipment
US5390903A (en) * 1993-09-03 1995-02-21 Connell Limited Partnership Variable force die spring assembly
BE1011152A3 (en) * 1997-05-13 1999-05-04 Belgonucleaire Sa Assembly grouping device
WO2000002206A3 (en) * 1998-06-30 2000-04-13 Siemens Ag Storage rack for fuel elements

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