Title:
過流量阻止弁及び過流量阻止弁点検装置
Document Type and Number:
Japanese Patent JP7010771
Kind Code:
B2
Abstract:
To provide an excess flow prevention valve which enables operation inspection of the excess flow prevention valve to be carried out in a short time without needing waste water treatment of a plant regardless of the time, and to provide an excess flow prevention valve inspection device.SOLUTION: A permanent magnet poppet valve 4 and a permanent magnet 8 are disposed in a hollow valve shaft 5 of an excess flow prevention valve 100. A direct current power source 9 is driven by a drive part 15 based on an instruction of an instruction part 16, and the permanent magnet poppet valve 4 is moved by an operation testing coil 10 to move a valve body 2. A detector 11 detects movement of the valve body 2 to enable operation inspection of the excessive flow prevention valve 100 to be performed.SELECTED DRAWING: Figure 1
Inventors:
Koki Ogawa
Yoki Tasaka
Yoki Tasaka
Application Number:
JP2018114312A
Publication Date:
January 26, 2022
Filing Date:
June 15, 2018
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
F16K17/30; F16K31/08; F16K51/00; G01M13/00
Domestic Patent References:
| JP56076775U | ||||
| JP8247899A | ||||
| JP63135679A |
Attorney, Agent or Firm:
Kaichi International Patent Office
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