JPS54130703A - Feed-water controller - Google Patents
Feed-water controllerInfo
- Publication number
- JPS54130703A JPS54130703A JP3774878A JP3774878A JPS54130703A JP S54130703 A JPS54130703 A JP S54130703A JP 3774878 A JP3774878 A JP 3774878A JP 3774878 A JP3774878 A JP 3774878A JP S54130703 A JPS54130703 A JP S54130703A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- adjusting valve
- feedwater
- feed water
- revolution
- 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
Abstract
PURPOSE: To safely operate a feed water pump in a voltage transformation shape, by automatically changing over the control of said pump and adjusting valves by automatically discriminating the modes of a safety operation range and a critical speed range when feeding water by means of the feed water pump that the safety operation speed range is limited.
CONSTITUTION: When a command signal of the speed of revolution becomes not more than limit value, a first feedwater adjusting valve 61 is operated in the circumferential direction by means of a feedwater adjusting valve control portion 15 while a second feedwater adjusting valve 62 interlocked with said valve 61 is perfectly closed. If the capacity of the adjusting valve 61 is selected not less than a flow rate discharged from a feed water pump 4 in the speed limit at that time, the variation of a feed water flow rate due to the opening and closing of the adjusting valve 62 approximately becomes extinct. When the command signal of the speed of revolution is not more than limit value, the speed of the revolution of a feedwater turbine becomes constant, and the adjusting valve 61 is controlled. When the signal returns not less than limit value, the adjusting valves 61, 62 are perfectly opened and shifts to the control of the speed of the pump, and smoothly changed over.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3774878A JPS54130703A (en) | 1978-03-31 | 1978-03-31 | Feed-water controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3774878A JPS54130703A (en) | 1978-03-31 | 1978-03-31 | Feed-water controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54130703A true JPS54130703A (en) | 1979-10-11 |
Family
ID=12506090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3774878A Pending JPS54130703A (en) | 1978-03-31 | 1978-03-31 | Feed-water controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54130703A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5946404A (en) * | 1982-09-10 | 1984-03-15 | 株式会社東芝 | Feedwater controller |
-
1978
- 1978-03-31 JP JP3774878A patent/JPS54130703A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5946404A (en) * | 1982-09-10 | 1984-03-15 | 株式会社東芝 | Feedwater controller |
JPH0229922B2 (en) * | 1982-09-10 | 1990-07-03 | Tokyo Shibaura Electric Co |
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