JPS5629084A - Operation control of pump - Google Patents

Operation control of pump

Info

Publication number
JPS5629084A
JPS5629084A JP9727179A JP9727179A JPS5629084A JP S5629084 A JPS5629084 A JP S5629084A JP 9727179 A JP9727179 A JP 9727179A JP 9727179 A JP9727179 A JP 9727179A JP S5629084 A JPS5629084 A JP S5629084A
Authority
JP
Japan
Prior art keywords
flow
velocity
settled
pump
difference
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
JP9727179A
Other languages
Japanese (ja)
Inventor
Saburo Maru
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9727179A priority Critical patent/JPS5629084A/en
Publication of JPS5629084A publication Critical patent/JPS5629084A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent generation of beat phenomena and operation without conveying water by making arranged velocity controls giving a settled velocity difference to each pump in a pump system to be required to provide flow controls in response to consuming rate for water works system or another.
CONSTITUTION: Since flow rate to be conveyed is preset in a flow controller 10 differential signals are sought out between the set flow signals and flow signals conveyed through a flow meter 9, and the differential signals are supplied to an arranged velocity controller 11 and a unit number controller 12 which control so that two pumps 8a, 8b in other words motors 13a, 13b can be rotated by a settled velocity difference. Thus, arranged velocity control is done by giving a settled velocity difference. Thus, arranged velocity control is done by giving a settled velocuty difference to the pumps 8a, 8b, with prevention of jarring beat phenomena, by reason that the velocity difference between the pumps has flow characteristic curve of each pump set to almost the same, flow distribution is equalized with possibility of preventing operation without conveying water.
COPYRIGHT: (C)1981,JPO&Japio
JP9727179A 1979-08-01 1979-08-01 Operation control of pump Pending JPS5629084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9727179A JPS5629084A (en) 1979-08-01 1979-08-01 Operation control of pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9727179A JPS5629084A (en) 1979-08-01 1979-08-01 Operation control of pump

Publications (1)

Publication Number Publication Date
JPS5629084A true JPS5629084A (en) 1981-03-23

Family

ID=14187857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9727179A Pending JPS5629084A (en) 1979-08-01 1979-08-01 Operation control of pump

Country Status (1)

Country Link
JP (1) JPS5629084A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178585A (en) * 1985-02-01 1986-08-11 Daikin Ind Ltd Air conditioner
JP2010145013A (en) * 2008-12-18 2010-07-01 Takagi Ind Co Ltd Heat source machine and method for controlling the same
JP2014036886A (en) * 2013-10-25 2014-02-27 Terumo Corp Electronic sphygmomanometer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178585A (en) * 1985-02-01 1986-08-11 Daikin Ind Ltd Air conditioner
JP2010145013A (en) * 2008-12-18 2010-07-01 Takagi Ind Co Ltd Heat source machine and method for controlling the same
JP2014036886A (en) * 2013-10-25 2014-02-27 Terumo Corp Electronic sphygmomanometer

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