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Title:
VALVE, METHOD FOR DIAGNOSING ABNORMALITY OF VALVE, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/106960
Kind Code:
A1
Abstract:
[Problem] To make it possible to correctly and simply diagnose operation abnormalities in a valve. [Solution] A valve (V1) with which it is possible to detect operation abnormalities has: a magnet (M1) attached near a pressing adapter (52) of a stem (53) that slides in accordance with the opening and closing motion of the valve (V1); and a magnetic sensor (M2) attached to a surface facing the stem (53), the surface being the inner side of the pressing adapter (52) that presses the peripheral edge of a diaphragm (51), the magnetic sensor (M2) detecting changes in the distance from the magnet (M1). Furthermore, an abnormality determination means compares the change detected by the magnetic sensor (M2) in the distance between the magnet (M1) and the magnetic sensor (M2) during abnormality diagnosis, with the change in distance between the magnet (M1) and the magnetic sensor (M2) during normal operation as measured in advance, and determines the presence of abnormalities.

Inventors:
TANNO Ryutaro (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
AIKAWA Kenji (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
HARADA Akihiro (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
SUZUKI Yuya (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
MATSUDA Takahiro (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
KOMEHANA Katsunori (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
OCHIISHI Masahiko (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
SHINOHARA Tsutomu (2-3-2 Itachibori, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
Application Number:
JP2018/037417
Publication Date:
June 06, 2019
Filing Date:
October 05, 2018
Export Citation:
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Assignee:
FUJIKIN INCORPORATED (2-3-2, Itachibori Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
International Classes:
F16K37/00; F16K7/12
Foreign References:
JP2008208977A2008-09-11
JPS63173577U1988-11-10
Attorney, Agent or Firm:
KASUKAWA Toshio (Modmarche-shibuyasakuragaoka 4th FL, 10-4 Sakuragaoka-cho, Shibuya-k, Tokyo 31, 〒1500031, JP)
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