JPS56146086A - Controller for number of pump - Google Patents
Controller for number of pumpInfo
- Publication number
- JPS56146086A JPS56146086A JP4796280A JP4796280A JPS56146086A JP S56146086 A JPS56146086 A JP S56146086A JP 4796280 A JP4796280 A JP 4796280A JP 4796280 A JP4796280 A JP 4796280A JP S56146086 A JPS56146086 A JP S56146086A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- computing element
- operated
- time
- pump
- 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)
- Flow Control (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
PURPOSE: To control flow rate minutely by controlling flow rate in a controlling range corresponding to the flow rate of a pump operated at that time when the flow rate of the pump operated at that time is less than the rated flow rate of pumps.
CONSTITUTION: Detecting value by means of a water-level detector 13 of a settling basin 5 is transmitted to the first computing element 1, compared with a water- level command and transmitted to the second computing element 2. Flow rate discharged from pumps 6, 7 is detected by means of flow rate detectors 8, 9, and transmitted to the third computing element 3. The amount of discharge as a target and the arithmetic value of the amount of discharge from the third computing element 3 are compared by means of the second computing element 2, and the proper controlling signals of the pumps 6, 7 are output. Detected values Q1, Q2 are multiplied by the fixed coefficients of multiplication G3WG5 by means of the third computing element 3, and the output signals Q' are output through each switch A, B, C. The switch A is closed during the time when only the pump 6 is operated, the switch B is closed during the time when only the pump 7 is operated and the switch C is closed during the time when the pumps 6, 7 are operated.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4796280A JPS56146086A (en) | 1980-04-14 | 1980-04-14 | Controller for number of pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4796280A JPS56146086A (en) | 1980-04-14 | 1980-04-14 | Controller for number of pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56146086A true JPS56146086A (en) | 1981-11-13 |
Family
ID=12789960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4796280A Pending JPS56146086A (en) | 1980-04-14 | 1980-04-14 | Controller for number of pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56146086A (en) |
-
1980
- 1980-04-14 JP JP4796280A patent/JPS56146086A/en active Pending
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