JPS55153878A - Pump device - Google Patents
Pump deviceInfo
- Publication number
- JPS55153878A JPS55153878A JP6040479A JP6040479A JPS55153878A JP S55153878 A JPS55153878 A JP S55153878A JP 6040479 A JP6040479 A JP 6040479A JP 6040479 A JP6040479 A JP 6040479A JP S55153878 A JPS55153878 A JP S55153878A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- detecting means
- pump
- flow
- calculated
- 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-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To avoid wasteful operation of the pump by the method wherein a flow detecting means and a pressure detecting means are provided on a water supply pipe, and the pump is operated when the pressure signal from the pressure detecting means is smaller than the signal from the flow detecting means.
CONSTITUTION: Flow detecting means 9 and pressure detecting means 10 are provided to water supply pipe 3. The flow signal detected by the flow detecting means 9 is calculated by a pipe path pressure calculating means 11 having a pipe path loss pressure calculator 12, hydrostatic pressure setter 13, ejection pressure setter 14 and adder 15. Here, the pressure value which must be maintained in order to obtain the pressure required for the ejection side is calculated, and the result of calculation is compared with the pressure signal detected by the pressure detecting means 10 by a comparator 17. When the pressure signal is smaller than the result of the calculated, value, pump 4 is operated. By this way, it is possible to detect the range in which water can be supplied by the natural flow of water without moving the pump 4, thus wasteful operation of the pump is avoided.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6040479A JPS55153878A (en) | 1979-05-18 | 1979-05-18 | Pump device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6040479A JPS55153878A (en) | 1979-05-18 | 1979-05-18 | Pump device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55153878A true JPS55153878A (en) | 1980-12-01 |
Family
ID=13141193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6040479A Pending JPS55153878A (en) | 1979-05-18 | 1979-05-18 | Pump device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55153878A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006057623A (en) * | 2004-07-20 | 2006-03-02 | Ebara Corp | Water supply system |
-
1979
- 1979-05-18 JP JP6040479A patent/JPS55153878A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006057623A (en) * | 2004-07-20 | 2006-03-02 | Ebara Corp | Water supply system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5350863A (en) | Demand quantity estimating apparatus for flow rate pressure controlling in piping network | |
JPS55153878A (en) | Pump device | |
JPS54153301A (en) | Automatic water supply method | |
JPS5726089A (en) | Method of controlling rigid sail for ship | |
JPS5756699A (en) | Diffused with vane | |
JPS5537527A (en) | Control method for pump speed | |
JPS5253189A (en) | Controller, in hydraulic unit | |
JPS5587879A (en) | Accelerating method for pump | |
JPS55162000A (en) | Method of operating multistage steam ejector | |
JPS5591784A (en) | Method and device for changing number of running pump | |
JPS5477803A (en) | Turbine bypass control system | |
JPS536912A (en) | Air supplying and water level regulating apparatus in pressure water tank | |
JPS5776282A (en) | Hydraulc unit | |
JPS52138708A (en) | Electrical well pump apparatus | |
JPS5462472A (en) | Control method for several pumps | |
JPS52100610A (en) | Air feed and water level control apparatus of pressure water tank | |
JPS54149903A (en) | Water supply flow control of pumps | |
JPS535411A (en) | Jet pump | |
JPS557911A (en) | Water-filling detecting method for pump | |
JPS5677586A (en) | Controlling method for pump | |
JPS5464284A (en) | Flow controller | |
JPS53122120A (en) | Pump automatic operation device | |
JPS5316144A (en) | Operation control for pump water turbine | |
JPS5330002A (en) | Pump running method | |
JPS52149185A (en) | Method of water supply for ultrasonic flaw detection |