JPS5681286A - Control system for number of pumps or others - Google Patents

Control system for number of pumps or others

Info

Publication number
JPS5681286A
JPS5681286A JP15845979A JP15845979A JPS5681286A JP S5681286 A JPS5681286 A JP S5681286A JP 15845979 A JP15845979 A JP 15845979A JP 15845979 A JP15845979 A JP 15845979A JP S5681286 A JPS5681286 A JP S5681286A
Authority
JP
Japan
Prior art keywords
pumps
power consumption
head
pump
reduced
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
JP15845979A
Other languages
Japanese (ja)
Inventor
Kenichi Kurotani
Makoto Kakehi
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP15845979A priority Critical patent/JPS5681286A/en
Publication of JPS5681286A publication Critical patent/JPS5681286A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To reduce the power consumption for pumps by detecting the head and the total discharge of pumps and selecting such a number of pumps to be operated as consuming the least amount of power.
CONSTITUTION: A computing element 7 calculates the power consumption on the basis of a head H for operating pumps computed by a computing element 5 on the basic formula (head on discharge side) - (head on suction side) and also total discharge of all pumps Q detected by a discharge detector 6, and compares it with those power consumption with one additional and reduced number of pump respectively, before transmitting an operating pump number command N. Provided that P is the power consumption calculated on the basis of the number of pumps presently in operation, power consumption P' with one additional pump possessing the same head and discharge, and power consumption P" with one reduced pump are calculated. When P'<P, one pump is added, and when P"<P, one pump is reduced. Thus, the power consumption can be reduced by increasing or reducing the number of pumps so that a proper flow rate may be established in accordance with the head of pumps.
COPYRIGHT: (C)1981,JPO&Japio
JP15845979A 1979-12-06 1979-12-06 Control system for number of pumps or others Pending JPS5681286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15845979A JPS5681286A (en) 1979-12-06 1979-12-06 Control system for number of pumps or others

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15845979A JPS5681286A (en) 1979-12-06 1979-12-06 Control system for number of pumps or others

Publications (1)

Publication Number Publication Date
JPS5681286A true JPS5681286A (en) 1981-07-03

Family

ID=15672197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15845979A Pending JPS5681286A (en) 1979-12-06 1979-12-06 Control system for number of pumps or others

Country Status (1)

Country Link
JP (1) JPS5681286A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60263771A (en) * 1984-06-13 1985-12-27 Toyota Motor Corp Operation control device for plural pumps
JPS63167086A (en) * 1986-12-27 1988-07-11 Fuji Electric Co Ltd Monitoring control device for highly effective operation of distribution pump unit
JP2015194156A (en) * 2014-03-27 2015-11-05 株式会社荏原製作所 Method for controlling the number of operated pumps and pump device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60263771A (en) * 1984-06-13 1985-12-27 Toyota Motor Corp Operation control device for plural pumps
JPS63167086A (en) * 1986-12-27 1988-07-11 Fuji Electric Co Ltd Monitoring control device for highly effective operation of distribution pump unit
JP2015194156A (en) * 2014-03-27 2015-11-05 株式会社荏原製作所 Method for controlling the number of operated pumps and pump device

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