JPS6479502A - Level controller for drain tank of feedwater heater - Google Patents
Level controller for drain tank of feedwater heaterInfo
- Publication number
- JPS6479502A JPS6479502A JP23459387A JP23459387A JPS6479502A JP S6479502 A JPS6479502 A JP S6479502A JP 23459387 A JP23459387 A JP 23459387A JP 23459387 A JP23459387 A JP 23459387A JP S6479502 A JPS6479502 A JP S6479502A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- level adjusting
- adjusting valve
- normal water
- drain 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 Non-Electrical Variables (AREA)
Abstract
PURPOSE: To suppress fluctuation of the water level of a high-pressure drain tank, by adding a signal, where a deviation signal between the drain flow command signal of each other water level adjusting valve and its real drain flow command signal is added to the drain flow command signal outputted to each water level adjusting valve, as a control signal to the water level adjusting valve. CONSTITUTION: In case that abnormality occurs in either of normal water level adjusting valves 12a and 12b, for example, in the normal water level adjusting valve 12a and it operates in close direction, a normal water level adjusting valve drain flow signal e1 deceases, the deviation signal f1 of the drain flow of the ordinary water level adjusting valve increases. Accordingly, the drain flow command signal of the normal water level adjusting valve 12b increases by that amount, and that water level adjusting valve 12 is actuated in open direction. That is, the normal water level adjusting valve 12b on normality side works to compensate the operation of the normal water level adjusting valve 12a on abnormality side. Conversely, in case that the normal water level adjusting valve 12a on abnormality side operates in open side, the normal water level adjusting valve 12b on abnormality side operates for compensation in close direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23459387A JPS6479502A (en) | 1987-09-18 | 1987-09-18 | Level controller for drain tank of feedwater heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23459387A JPS6479502A (en) | 1987-09-18 | 1987-09-18 | Level controller for drain tank of feedwater heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6479502A true JPS6479502A (en) | 1989-03-24 |
Family
ID=16973458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23459387A Pending JPS6479502A (en) | 1987-09-18 | 1987-09-18 | Level controller for drain tank of feedwater heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6479502A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA009439B1 (en) * | 2005-01-19 | 2007-12-28 | Арузе Корп. | Gaming machine |
-
1987
- 1987-09-18 JP JP23459387A patent/JPS6479502A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA009439B1 (en) * | 2005-01-19 | 2007-12-28 | Арузе Корп. | Gaming machine |
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