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Title:
PRESSURE TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2015078944
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure transmission device capable of ensuring suppression of generation of air bubbles in a pressure introduction path, and thereby maintaining pressure transmission characteristics for a long period of time.SOLUTION: A pressure transmission device 1 includes: tubular pressure introduction paths 11 and 11'; an encapsulated liquid L filled in the pressure introduction paths 11 and 11'; pressure-reception diaphragms 13 and 13' provided in a state of closing one of openings of the pressure introduction path 11 or 11', and receiving pressures of measurement fluids Fh and Fl, respectively; a pressure sensor 15 provided at the other opening of each of the pressure introduction paths 11 and 11' in a state of being exposed to the encapsulated liquid L; and a hydrogen-transmission prevention layer 21 provided in each of the pressure-reception diaphragms 13 and 13'. The pressure transmission device 1 further includes a hydrogen storage material provided in each of the pressure introduction paths 11 and 11'.

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Inventors:
KUWANA RYO
ARITA SETSUO
BABA ATSUSHI
FUSHIMI ATSUSHI
NIIMA DAISUKE
HANAMI HIDEKI
HARA ISAO
ITO TAKASHI
Application Number:
JP2013217138A
Publication Date:
April 23, 2015
Filing Date:
October 18, 2013
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
G01L13/02; G01L19/06
Domestic Patent References:
JP2004361159A2004-12-24
JPH09113394A1997-05-02
JP2004361159A2004-12-24
JPH09113394A1997-05-02
JPH04311542A1992-11-04
JP2008075697A2008-04-03
Foreign References:
CN202938959U2013-05-15
CN202938959U2013-05-15
Attorney, Agent or Firm:
Shinto International Patent Office