JPS54142601A - Method of starting pumps and adjusting their speeds - Google Patents
Method of starting pumps and adjusting their speedsInfo
- Publication number
- JPS54142601A JPS54142601A JP4979978A JP4979978A JPS54142601A JP S54142601 A JPS54142601 A JP S54142601A JP 4979978 A JP4979978 A JP 4979978A JP 4979978 A JP4979978 A JP 4979978A JP S54142601 A JPS54142601 A JP S54142601A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- revolutions
- follow
- speeds
- characteristic
- 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)
Abstract
PURPOSE: To reduce fluctuations in the quantity of pumped water flow by adjusting the speeds of a follow-up pump and an operating pump and by specifying the opening operation of the discharge valve of the follow-up pump.
CONSTITUTION: The adjustment of the speeds of the follow-up pump and the operating pump and the opening operation of the valve of the follow-up pump are performed after the no discharge pump head reached the number of revolutions showing characteristics exceeding the pressure on the discharge side. By this, the change in the quantity of pumped water flow, ΔQ0, which is the distance between the intersection of the single operation characteristic 14 at the number of revolutions 100% and the pipe passage characteristic 17, and the intersection of the parallel operation characteristic for one pump at the number of revolutions 100% and another pump at the number of revolutions y% and the pipe passage characteristic 17. As a result, undesirable phenomena, such as pressure fluctuation and the like, can be reduced, and at the same time, ΔT0 which is the control time required until the number of revolutions of the operating pump, 11, and the number of revolutions of the follow-up pump, 12, become equal, is shortened.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4979978A JPS54142601A (en) | 1978-04-28 | 1978-04-28 | Method of starting pumps and adjusting their speeds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4979978A JPS54142601A (en) | 1978-04-28 | 1978-04-28 | Method of starting pumps and adjusting their speeds |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54142601A true JPS54142601A (en) | 1979-11-07 |
Family
ID=12841183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4979978A Pending JPS54142601A (en) | 1978-04-28 | 1978-04-28 | Method of starting pumps and adjusting their speeds |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54142601A (en) |
-
1978
- 1978-04-28 JP JP4979978A patent/JPS54142601A/en active Pending
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