JPS56113863A - Main steam control valve - Google Patents
Main steam control valveInfo
- Publication number
- JPS56113863A JPS56113863A JP1598780A JP1598780A JPS56113863A JP S56113863 A JPS56113863 A JP S56113863A JP 1598780 A JP1598780 A JP 1598780A JP 1598780 A JP1598780 A JP 1598780A JP S56113863 A JPS56113863 A JP S56113863A
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- fringe
- spherical
- convex part
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Turbines (AREA)
- Lift Valve (AREA)
Abstract
PURPOSE: To form stable flow of steam to make vibrations of a valve body extremely small by forming a convex part at a spherical fringe of the valve body and a concave part on a back flow side and preventing separation of a boundary layer which adheres to the spherical fringe.
CONSTITUTION: A concave part 13 is made on a back flow side of a convex part 12 which is formed at spherical fringe of a valve body 1. At this time, a cutting angle θ of the concave part is designed to satisfy a condition 120°≤θ≤150°. As the result, a general flow line (a) along the spherical fringe of the valve body 1 is interrupted at the convex part 12, and the flow line (a) goes toward almost the center of an outlet chamber 11 from a surface of the convex part 12 of which curvature is (r). By such constitution, separation of a boundary layer which adheres to the spherical fringe of the valve body 1 can be almost perfectly prevented even when a pressure difference at an inlet and an outlet of the valve body 1 and a flow speed are small, so that stable flow range can be obtained and vibrations of the valve body 1 can be minimum.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1598780A JPS56113863A (en) | 1980-02-14 | 1980-02-14 | Main steam control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1598780A JPS56113863A (en) | 1980-02-14 | 1980-02-14 | Main steam control valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56113863A true JPS56113863A (en) | 1981-09-08 |
Family
ID=11904008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1598780A Pending JPS56113863A (en) | 1980-02-14 | 1980-02-14 | Main steam control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56113863A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006063957A (en) * | 2004-08-30 | 2006-03-09 | Toshiba Corp | Steam valve device |
JP2015081568A (en) * | 2013-10-23 | 2015-04-27 | 株式会社東芝 | Steam valve device |
-
1980
- 1980-02-14 JP JP1598780A patent/JPS56113863A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006063957A (en) * | 2004-08-30 | 2006-03-09 | Toshiba Corp | Steam valve device |
JP2015081568A (en) * | 2013-10-23 | 2015-04-27 | 株式会社東芝 | Steam valve device |
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