JPS5575516A - Controlling method check valve - Google Patents
Controlling method check valveInfo
- Publication number
- JPS5575516A JPS5575516A JP14905178A JP14905178A JPS5575516A JP S5575516 A JPS5575516 A JP S5575516A JP 14905178 A JP14905178 A JP 14905178A JP 14905178 A JP14905178 A JP 14905178A JP S5575516 A JPS5575516 A JP S5575516A
- Authority
- JP
- Japan
- Prior art keywords
- check valve
- steam pressure
- pressure
- valve
- difference
- 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
- Check Valves (AREA)
Abstract
PURPOSE: To prevent chattering of a check valve, by detecting the difference between primary steam pressure and secondary steam pressure, and controlling the check valve forcibly on the basis of the pressure difference.
CONSTITUTION: When the primary steam pressure 22 of check valve 21 becomes higher than the secondary steam pressure 23 more than a predetermined level, the pressure difference is detected by detector 24 for detecting the differential pressure on the opposite sides of check valve 21 and transmitted to interlocking means 25. By the interlocking means 25, electromagnetic valve 26 for opening and closing the check valve 21 is energized and speed controller 28 also used for opening and closing the check valve 21 is turned on simultaneously so as to supply compressed air from damper valve 27 of turbine relay to air cylinder 29 of check valve 21. Check valve 21 is opened or closed gradually since compressed-air flow is limited appropriately by the speed controller 28.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14905178A JPS5575516A (en) | 1978-12-04 | 1978-12-04 | Controlling method check valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14905178A JPS5575516A (en) | 1978-12-04 | 1978-12-04 | Controlling method check valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5575516A true JPS5575516A (en) | 1980-06-06 |
Family
ID=15466571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14905178A Pending JPS5575516A (en) | 1978-12-04 | 1978-12-04 | Controlling method check valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5575516A (en) |
-
1978
- 1978-12-04 JP JP14905178A patent/JPS5575516A/en active Pending
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