JPS5756690A - Parallel operation of pump - Google Patents
Parallel operation of pumpInfo
- Publication number
- JPS5756690A JPS5756690A JP13019380A JP13019380A JPS5756690A JP S5756690 A JPS5756690 A JP S5756690A JP 13019380 A JP13019380 A JP 13019380A JP 13019380 A JP13019380 A JP 13019380A JP S5756690 A JPS5756690 A JP S5756690A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- motor
- output
- flow rate
- 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)
Abstract
PURPOSE: To enable parallel operation control for a pump and a motor on the basis of flow rate loads by controlling the motor in response to a pressure signal in an output circuit of the pump, thereby eliminating a complicated piping work for equipping a flow rate relay in a piping.
CONSTITUTION: An increase of a flow rate required by a load causes a lack of a discharge from a pump 1A because a variable speed motor 2A cannot run over its maximum rotation speed. Associated with the lack, a pressure detector 7 reduces provides a reduced output with 0.5% or so of an error of a specific value preset by a pressure fixer 11. The error is amplified by an amplifier 12. When the output of the amplifier 12 exceeds a dead zone value of a deal zone element 16, a pressure regulator 17 receives the output signal. The regulator 17 provices an output whose intensity depends on said output signal to a speed control circuit 18, which makes a variable speed motor 2B run at a specific speed. The motor 2B performs parallel operation with the pump 1A to supply a load with its required amont of water. Aforementioned constitution eliminates the need for a flow rate detector and a complicated piping work.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13019380A JPS5756690A (en) | 1980-09-18 | 1980-09-18 | Parallel operation of pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13019380A JPS5756690A (en) | 1980-09-18 | 1980-09-18 | Parallel operation of pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5756690A true JPS5756690A (en) | 1982-04-05 |
JPS637272B2 JPS637272B2 (en) | 1988-02-16 |
Family
ID=15028305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13019380A Granted JPS5756690A (en) | 1980-09-18 | 1980-09-18 | Parallel operation of pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5756690A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004316832A (en) * | 2003-04-18 | 2004-11-11 | Nissan Motor Co Ltd | Hydraulic control device of continuously variable transmission |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5417441A (en) * | 1977-07-07 | 1979-02-08 | Univ Tokai | Vertical shaft type air force turbine |
-
1980
- 1980-09-18 JP JP13019380A patent/JPS5756690A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5417441A (en) * | 1977-07-07 | 1979-02-08 | Univ Tokai | Vertical shaft type air force turbine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004316832A (en) * | 2003-04-18 | 2004-11-11 | Nissan Motor Co Ltd | Hydraulic control device of continuously variable transmission |
Also Published As
Publication number | Publication date |
---|---|
JPS637272B2 (en) | 1988-02-16 |
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