Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1033/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :21/03/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : STEAM VALVE DEVICE AND STEAM TURBINE PLANT
(51) International classification :F16K (71)Name of Applicant :
(31) Priority Document No
:2011- 1)KABUSHIKI KAISHA TOSHIBA
068654 Address of Applicant :1-1 Shibaura 1-chome Minato-ku
(32) Priority Date :25/03/2011 Tokyo Japan
(33) Name of priority country :Japan (72)Name of Inventor :
(86) International Application No
Filing Date
:NA
:NA
1)TAKEMARU Ryuhei
2)SHINDO Osamu
(87) International Publication No : NA 3)ENDO Toshihiko
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
In the embodiment a steam valve device has a steam regulating valve and an intermediate flow path connecting the main steam
stop valve and the steam regulating valve The main steam stop valve and the steam regulating valve respectively have: casings
where flow paths are formed between horizontal inlet ports and outlet ports opened downward and valve seats are arranged in the
flow paths; valve elements movable up and down in the casings; and valve rods for driving the valve elements. The valve rods
extend upward and they are pulled off upward in a direction to outside of the casings when opening the flow paths. The
intermediate flow path changes the flow direction of main steam flowing out of the outlet port of the main steam stop valve from
downward direction to horizontal direction to guide the main steam.
No. of Pages : 39 No. of Claims : 8
The Patent Office Journal 21/06/2013 13677