JPS562495A - Controller for pump operation - Google Patents
Controller for pump operationInfo
- Publication number
- JPS562495A JPS562495A JP7819579A JP7819579A JPS562495A JP S562495 A JPS562495 A JP S562495A JP 7819579 A JP7819579 A JP 7819579A JP 7819579 A JP7819579 A JP 7819579A JP S562495 A JPS562495 A JP S562495A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- sound
- cavitation
- pressure level
- pumps
- 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 operate pumps in a safety area without generating cavitation by detecting the change of the sound-pressure level in cavitation sound-waves for controlling the number of pumps on the basis of a previously-set sound-pressure level at the limit of causing cavitation damage.
CONSTITUTION: For example, when a sound-pressure level signal from a sensor 3a indicates a higher level than a sound-pressure set in a function generator 5 during the operation of a single pump 2a, the pump is judged to be operating within the cavitation area. At this stage, a command to start a pump 2b is issued from a comparison computing element 6 via a cable 7a for reducing the actual discharge of the pump 2a, and the pump 2b is additionally started for making a safety operation. Conversely, for example, at the intermission of the pump 2b during the parallel operation of the pumps 2a and 2b, when the sound-pressure level is confirmed to be out of the cavitation area, the operation of the pump 2a is continued even if the actual discharge of the pump 2a is increased.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7819579A JPS562495A (en) | 1979-06-22 | 1979-06-22 | Controller for pump operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7819579A JPS562495A (en) | 1979-06-22 | 1979-06-22 | Controller for pump operation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS562495A true JPS562495A (en) | 1981-01-12 |
Family
ID=13655214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7819579A Pending JPS562495A (en) | 1979-06-22 | 1979-06-22 | Controller for pump operation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562495A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2694824A1 (en) * | 1992-08-11 | 1994-02-18 | Inst Francais Du Petrole | Device for regulating and distributing a multiphase fluid. |
-
1979
- 1979-06-22 JP JP7819579A patent/JPS562495A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2694824A1 (en) * | 1992-08-11 | 1994-02-18 | Inst Francais Du Petrole | Device for regulating and distributing a multiphase fluid. |
US5375618A (en) * | 1992-08-11 | 1994-12-27 | Institut Francais Du Petrole | Multiphase fluid regulating and distributing device |
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