JPS5469802A - Pump system - Google Patents
Pump systemInfo
- Publication number
- JPS5469802A JPS5469802A JP13664977A JP13664977A JPS5469802A JP S5469802 A JPS5469802 A JP S5469802A JP 13664977 A JP13664977 A JP 13664977A JP 13664977 A JP13664977 A JP 13664977A JP S5469802 A JPS5469802 A JP S5469802A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- signal
- flow rate
- detector
- discharge
- 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)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To control a pump at constant discharge pressure by providing a pressure detector and to adjust a pressure detector signal by providing a flow rate detector at the discharge side for prevention of excessive load to a variable speed drive means when the discharge flow rate exceed predetermined level.
CONSTITUTION: A variable speed electric motor 2 is driven to deliver constant discharge pressure when the pressure and the flow rate in a discharge pipe 4 corresponding to the discharge side load are within predetermined level wherein a saturation amplifier 10 compares the detected signal of a pressure detector 5 with the signal of a pressure setter 6 and sends a speed increase instruction to the variable speed electric motor 2 when the detected pressure is lower than the set pressure and sends a speed decrease instruction when the detected pressure is higher than the set pressure. An output signal of the saturation amplifier 10 which is adjusted by a signal of a flow rate detector 9 but is predominant to the flow rate detection signal is applied to an amplifier 11. The saturation amplifier 10 saturates and the flow detection signal increases when the load of the pump 1 increases.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13664977A JPS5469802A (en) | 1977-11-16 | 1977-11-16 | Pump system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13664977A JPS5469802A (en) | 1977-11-16 | 1977-11-16 | Pump system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5469802A true JPS5469802A (en) | 1979-06-05 |
Family
ID=15180253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13664977A Pending JPS5469802A (en) | 1977-11-16 | 1977-11-16 | Pump system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5469802A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2645213A1 (en) * | 1989-03-31 | 1990-10-05 | Guinard Pompes | MOTOR PUMP GROUP WITH PRESSURE AND FLOW SENSORS |
US6269872B1 (en) | 1998-10-14 | 2001-08-07 | Visteon Global Technologies, Inc. | System and method for regulating coolant flow rate to a heat exchanger |
EP1431583A3 (en) * | 2002-12-20 | 2005-07-27 | Dab Pumps S.p.A. | Device for actuating electric pumps in liquid distribution systems |
-
1977
- 1977-11-16 JP JP13664977A patent/JPS5469802A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2645213A1 (en) * | 1989-03-31 | 1990-10-05 | Guinard Pompes | MOTOR PUMP GROUP WITH PRESSURE AND FLOW SENSORS |
US6269872B1 (en) | 1998-10-14 | 2001-08-07 | Visteon Global Technologies, Inc. | System and method for regulating coolant flow rate to a heat exchanger |
EP1431583A3 (en) * | 2002-12-20 | 2005-07-27 | Dab Pumps S.p.A. | Device for actuating electric pumps in liquid distribution systems |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5469802A (en) | Pump system | |
JPS5537527A (en) | Control method for pump speed | |
JPS55125381A (en) | Water supplying method | |
JPS57115679A (en) | Adjusting device of degree of vacuum in condenser | |
JPS54132096A (en) | Water level control method | |
JPS5756690A (en) | Parallel operation of pump | |
JPS57184844A (en) | Ventilating method for parking space | |
JPS5681286A (en) | Control system for number of pumps or others | |
JPS5762983A (en) | Parallel running system of pump | |
JPS57173522A (en) | Control device of water pump in engine | |
JPS53123374A (en) | Controlling method for concentrating still | |
JPS5650720A (en) | Tension roller staightener | |
JPS5260302A (en) | Feed water control device | |
JPS57140587A (en) | Method of controlling operation of pump | |
JPS6441695A (en) | Level detecting type automatic pumping device | |
JPS57212388A (en) | Apparatus for feeding water under pressure | |
JPS5477301A (en) | Automatic on-off device of variable speed pump | |
JPS5490404A (en) | Feed water flow rate controller | |
JPS52118606A (en) | Centrifugal compressor | |
JPS5455109A (en) | Controller for signal level | |
JPS57156698A (en) | Speed controller for generator | |
JPS57142183A (en) | Controlling device for vehicle | |
JPS56124745A (en) | Speed controller for agricultural tractor or the like | |
JPS5726052A (en) | Power steering gear | |
JPS57105579A (en) | Operation control device for blower |