Title:
蒸気弁装置
Document Type and Number:
Japanese Patent JP5683895
Kind Code:
B2
Abstract:
In one embodiment, a steam valve apparatus includes: a steam valve (200) passing or blocking a steam to a turbo machine; a piston (202) operated by a hydraulic liquid to open or close the steam valve; a hydraulic cylinder including an internal space sectioned into a first chamber (204) and a second chamber (205) by the piston, the first chamber being on a close side of the steam valve, and the second chamber being on an open side of the steam valve; a first passage (pl9) to supply the hydraulic liquid to the first chamber (204); a second passage (pl7) connecting the first chamber and the second chamber; a third passage (pl8) to drain the hydraulic liquid from the second chamber; an electromagnetic valve (521,522) switched between a first state and a second state based on an input of a signal; a first cartridge valve (29,30) opening the first passage when the electromagnetic valve is in the first state and closing the first passage when the electromagnetic valve is in the second state; and a second cartridge valve (525,526) closing the first passage when the electromagnetic valve is in the first state and opening the first passage when the electromagnetic valve is in the second state.
Inventors:
進藤 蔵
Application Number:
JP2010231582A
Publication Date:
March 11, 2015
Filing Date:
October 14, 2010
Export Citation:
Assignee:
株式会社東芝
International Classes:
F01D21/00; F01D17/10; F15B20/00
Attorney, Agent or Firm:
Toshio Shikamata
Hiroshi Shimura
Hiroshi Shimura