JPS5697108A - Control method of number of set of pump - Google Patents

Control method of number of set of pump

Info

Publication number
JPS5697108A
JPS5697108A JP5280A JP5280A JPS5697108A JP S5697108 A JPS5697108 A JP S5697108A JP 5280 A JP5280 A JP 5280A JP 5280 A JP5280 A JP 5280A JP S5697108 A JPS5697108 A JP S5697108A
Authority
JP
Japan
Prior art keywords
water level
command
pumps
given value
water
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
Application number
JP5280A
Other languages
Japanese (ja)
Inventor
Tokuo Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP528079A priority Critical patent/JPS5916898B2/en
Priority claimed from JP528079A external-priority patent/JPS5916898B2/en
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Publication of JPS5697108A publication Critical patent/JPS5697108A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Flow Control (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE: To reduce the frequency of on/off, by sampling the water level with one period, calculating the water level and its change rate, and driving pumps only when the rate exceeds a given value.
CONSTITUTION: Water delivered to a pump 1 is fed to a reservoir 3 with pumps P1WPn and water is supplied to users. The water level signal from a water level meter 4 is operated 5, an on/off admitting command is produced and the number of operating sets is controlled 6 with the water level. In this case, when the variance in water level is gradual, no operator 5 makes output, and only when the change rate of the water level exceeds a given value, the command in increase/decrease is permitted, and if the water level changes gradually toward the same direction, interruption is made when the water level exceeds a given value and the command for increase/decrease of the number of sets is permitted. Thus, the frequency of on/off of pumps can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
JP5280A 1979-01-20 1980-01-07 Control method of number of set of pump Pending JPS5697108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP528079A JPS5916898B2 (en) 1980-01-07 1979-01-20 Automatic assembly method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP528079A JPS5916898B2 (en) 1980-01-07 1979-01-20 Automatic assembly method

Publications (1)

Publication Number Publication Date
JPS5697108A true JPS5697108A (en) 1981-08-05

Family

ID=11606818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5280A Pending JPS5697108A (en) 1979-01-20 1980-01-07 Control method of number of set of pump

Country Status (1)

Country Link
JP (1) JPS5697108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127185U (en) * 1982-02-23 1983-08-29 株式会社明電舎 Pump operation number control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127185U (en) * 1982-02-23 1983-08-29 株式会社明電舎 Pump operation number control device

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