Title:
GAS PRESSURE REGULATING VALVE
Document Type and Number:
WIPO Patent Application WO/2012/017668
Kind Code:
A1
Abstract:
Provided is a gas pressure regulating valve capable of, even under the environment of high-pressure fuel gas, more accurately regulating the secondary pressure thereof to a target pressure and preventing fuel gas leakage into the atmosphere. An electromagnetic pressure regulating valve (1) is an in-tank type and regulates the secondary pressure (p2) to a target pressure by regulating the degree of opening of a valve passage (46) by moving a valve element (17) by an electromagnetic proportional solenoid (31). Both sides of a bearing member (20) which slidably supports the valve element (17) are sealed by a diaphragm seal (21) and a low-pressure seal member (22). The diaphragm seal (21) receives the secondary pressure (p2) from a pressure return chamber (25) to thereby move the valve element (17) to a closed position. In the valve element (17), a back-pressure chamber (27) leading to a primary port (41) is formed by a seal rod (26) inserted therein. A connecting passage (30) leading to a secondary port (12b) is formed at the side of the seal rod (26), and a space between the connecting passage (30) and the back-pressure chamber (27) is sealed by a high-pressure seal member (29).
Inventors:
NOMICHI, Kaoru (())
野道 薫 (())
SUZUKI, Yutaka (())
野道 薫 (())
SUZUKI, Yutaka (())
Application Number:
JP2011/004439
Publication Date:
February 09, 2012
Filing Date:
August 04, 2011
Export Citation:
Assignee:
KAWASAKI JUKOGYO KABUSHIKI KAISHA (1-1 Higashikawasaki-cho 3-chome, Chuo-ku Kobe-sh, Hyogo 70, 〒6508670, JP)
川崎重工業株式会社 (〒70 兵庫県神戸市中央区東川崎町３丁目１番１号 Hyogo, 〒6508670, JP)
NOMICHI, Kaoru (())
野道 薫 (())
川崎重工業株式会社 (〒70 兵庫県神戸市中央区東川崎町３丁目１番１号 Hyogo, 〒6508670, JP)
NOMICHI, Kaoru (())
野道 薫 (())
International Classes:
F16K31/06; F02M21/02; H01M8/04
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (3rd Fl, Bo-eki Bldg.,123-1 Higashimachi, Chuo-ku,,Kobe-sh, Hyogo 31, 〒6500031, JP)
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Claims:
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