VALVE OPENING/CLOSING CONTROL DEVICE AND GAS SUPPLY FACILITY EQUIPMENT

Japanese Patent JP2016070642

A

PROBLEM TO BE SOLVED: To reduce possibility of a valve opening operation by a remote control under a situation that the valve should be kept in a closed state.SOLUTION: A valve opening/closing control device includes a remote operation command receiving portion 4 for receiving an operation command transmitted from a remote command center, a local signal receiving portion 5 for receiving a local signal output from a local device 3 in occurrence of abnormality, a closing operation portion 6 for keeping a valve 2 in a closed state when a valve closing operation command is received from the remote operation command portion 4, or the local signal is received from the local signal receiving portion 5, an opening operation portion 7 for keeping the valve 2 in an opened state when a valve opening command is received from the remote operation command receiving portion 4, and an opening operation propriety determining portion 8 for invalidating the valve opening operation by the valve opening operation command when the lapse of time from the valve closing operation based on the local signal is an opening operation invalidation time or less.SELECTED DRAWING: Figure 1

AMANO YUUKI
NORITO YUKI

JP2014203599A

May 09, 2016

October 02, 2014

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AZBIL CORP
TOKYO GAS CO LTD

F23K5/00; F16K17/36

JP2004205333A	2004-07-22
JP2002156259A	2002-05-31
JP2001116200A	2001-04-27
JPH10188191A	1998-07-21
JP2001243581A	2001-09-07
JP2005188925A	2005-07-14
JP2008107140A	2008-05-08
JP2006107140A	2006-04-20
JPH08136293A	1996-05-31

US20120090702A1

2012-04-19

Masaki Yamakawa
Shigeki Yamakawa

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