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Patent Searching and Data


Title:
GAS SUPPLY SYSTEM AND GAS SHUTOFF METHOD
Document Type and Number:
WIPO Patent Application WO/2019/070053
Kind Code:
A1
Abstract:
The purpose of the present invention is to prevent a failure from occurring at a gas supply destination due to stoppage of gas supply by a water seal valve, and to ensure safety. This gas supply system is provided with: a water seal valve (1) that includes a valve element (3) that rotates about a rotating shaft (24) and covers an opening (4c) of a pipeline, and a valve element balance weight (7) connected to the valve element (3), the water seal valve shutting off circulation of fuel gas in a state where the valve element (3) covers the opening (4c); and a stopper mechanism (20) for retaining support of the valve element (3) and the valve element balance weight (7) in a state where the valve element (3) does not cover the opening (4c). The stopper mechanism (20) is provided with: an air cylinder (11) that is driven by compressed air and supports the valve element (3) and the valve element balance weight (7) when compressed air is discharge, and releases the support of the valve element (3) and the valve element balance weight (7) when compressed air is supplied; and a compressed air system for supplying/discharging compressed air to/from the air cylinder (11).

Inventors:
KASAI Jun (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
Application Number:
JP2018/037364
Publication Date:
April 11, 2019
Filing Date:
October 05, 2018
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD. (3-1 Minatomirai 3-chome, Nishi-ku Yokohama-sh, Kanagawa 01, 〒2208401, JP)
International Classes:
F22B37/42; F16K5/04; F16K31/46; F23K5/00
Foreign References:
JPS55127756U1980-09-09
JP2006097706A2006-04-13
JP2000334253A2000-12-05
JPH0452672U1992-05-06
JPS5623762U1981-03-03
JP2002162000A2002-06-07
JP2002071039A2002-03-08
JP2010159796A2010-07-22
JPH09242918A1997-09-16
JPS50141730A1975-11-14
JP2018048717A2018-03-29
Attorney, Agent or Firm:
FUJITA, Takaharu (37F The Landmark Tower Yokohama, 2-2-1 Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 37, 〒2208137, JP)
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