JPS5465802A - Feed water controller - Google Patents
Feed water controllerInfo
- Publication number
- JPS5465802A JPS5465802A JP13227377A JP13227377A JPS5465802A JP S5465802 A JPS5465802 A JP S5465802A JP 13227377 A JP13227377 A JP 13227377A JP 13227377 A JP13227377 A JP 13227377A JP S5465802 A JPS5465802 A JP S5465802A
- Authority
- JP
- Japan
- Prior art keywords
- feed water
- block valve
- flow rate
- rotational frequency
- trigger circuit
- 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 Positive-Displacement Pumps (AREA)
- Flow Control (AREA)
Abstract
PURPOSE: To prevent the repeated open/close operation of a clock valve and smoothly control the quantity of feed water, by providing a trigger circuit having a hysteresis as a device for applying a block valve open/close signal.
CONSTITUTION: When a rotational frequency N5 corresponding to a predetermined quantity Q1 of feed water is reached, the trigger circuit 20 generates the block valve open/close signal to entirely close the block valve 5. Therefore, a feed water pump is controlled by a feed water controller 10 to a rotational frequency N3 for the same flow rate Q1 as before the block valve 5 is closed. As for the increase in the quantity of feed water, the block valve 5 is fully opened by the signal generated by the trigger circuit 20 when a rotational frequency N2 for a predetermined flow rate Q2 higher than the flow rate Q1 corresponding to the entire closing of the block valve 5 is reached. Then, the rotational frequency of the pump is reduced from N2 to N1 by the action of the feed water controller 10 and the pump is controlled to the same flow rate Q2 as before the block valve 5 is closed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13227377A JPS5465802A (en) | 1977-11-04 | 1977-11-04 | Feed water controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13227377A JPS5465802A (en) | 1977-11-04 | 1977-11-04 | Feed water controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5465802A true JPS5465802A (en) | 1979-05-26 |
Family
ID=15077415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13227377A Pending JPS5465802A (en) | 1977-11-04 | 1977-11-04 | Feed water controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5465802A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4974664A (en) * | 1990-02-14 | 1990-12-04 | Eaton Corporation | Compensating for water pump speed variations in a tempered air system for vehicle passenger compartments |
US5085267A (en) * | 1990-06-18 | 1992-02-04 | Eaton Corporation | Compensating for water pressure variations in a tempered air system for vehicle passenger compartments |
CN104481893A (en) * | 2014-09-14 | 2015-04-01 | 西安交通大学 | Optimized water pump energy conservation control method |
-
1977
- 1977-11-04 JP JP13227377A patent/JPS5465802A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4974664A (en) * | 1990-02-14 | 1990-12-04 | Eaton Corporation | Compensating for water pump speed variations in a tempered air system for vehicle passenger compartments |
US5085267A (en) * | 1990-06-18 | 1992-02-04 | Eaton Corporation | Compensating for water pressure variations in a tempered air system for vehicle passenger compartments |
CN104481893A (en) * | 2014-09-14 | 2015-04-01 | 西安交通大学 | Optimized water pump energy conservation control method |
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