JPS5647691A - Device to control flow rate through pump in flow - Google Patents
Device to control flow rate through pump in flowInfo
- Publication number
- JPS5647691A JPS5647691A JP12367079A JP12367079A JPS5647691A JP S5647691 A JPS5647691 A JP S5647691A JP 12367079 A JP12367079 A JP 12367079A JP 12367079 A JP12367079 A JP 12367079A JP S5647691 A JPS5647691 A JP S5647691A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- flow rate
- electromagnetic valve
- pass
- pressure
- 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.)
- Granted
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Flow Control (AREA)
Abstract
PURPOSE: To achieve smooth flow rate control when starting a pump, by controlling a by-pass valve provided in a by-pass pipe line with a flow rate buffer mechanism which imparts an opening signal by a differential pressure mechanism and based on the ON signal from a pump.
CONSTITUTION: A by-pass valve 11 interposed in a by-pass pipe line is controlled by a differential pressure control mechanism consisting of a pressure difference set-up device 12 and a pressure regulator 13 and a flow rate buffer mechanism consisting of electromagnetic valves 15 and 19, a high selector 16, a choking mechanism 20 and a pressure set-up device 18. When ON signal from a pump is received in the control system, a-c of the electromagnetic valve 15 and a-b of the electromagnetic valve 19 are opened, and the signals from the pressure set-up device 18 are issued forcibly during a timer is activated and the by-pass valve 11 opens by a prescribed angle. When the timer is turned off, a-b of the electromagnetic valve 15 and a-c of the electromagnetic valve 19 are opened, and a bias signal becomes gradually smaller by the choking mechanism 20. Therefore smooth flow rate control can be made during the start-up of the pump.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12367079A JPS5647691A (en) | 1979-09-26 | 1979-09-26 | Device to control flow rate through pump in flow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12367079A JPS5647691A (en) | 1979-09-26 | 1979-09-26 | Device to control flow rate through pump in flow |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5647691A true JPS5647691A (en) | 1981-04-30 |
JPS63631B2 JPS63631B2 (en) | 1988-01-07 |
Family
ID=14866383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12367079A Granted JPS5647691A (en) | 1979-09-26 | 1979-09-26 | Device to control flow rate through pump in flow |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647691A (en) |
-
1979
- 1979-09-26 JP JP12367079A patent/JPS5647691A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS63631B2 (en) | 1988-01-07 |
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