JPS5756693A - Flow rate control method for pump - Google Patents

Flow rate control method for pump

Info

Publication number
JPS5756693A
JPS5756693A JP12848780A JP12848780A JPS5756693A JP S5756693 A JPS5756693 A JP S5756693A JP 12848780 A JP12848780 A JP 12848780A JP 12848780 A JP12848780 A JP 12848780A JP S5756693 A JPS5756693 A JP S5756693A
Authority
JP
Japan
Prior art keywords
pump
flow rate
discharge
water level
well
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
JP12848780A
Other languages
Japanese (ja)
Inventor
Toshihiko Ishizaki
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
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12848780A priority Critical patent/JPS5756693A/en
Publication of JPS5756693A publication Critical patent/JPS5756693A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make it possible to control a discharge flow rate place where a flow meter can not be easily installed by controlling the speed of a pump so that the pump characteristics stored in an arithmetic control unit and the pump characteristics computed from a line resistance curve as well as actual pump head may reach a target flow rate.
CONSTITUTION: The signals detected from a water level detector 3 for a suction well 2 a water level detector 5 for a discharge well 4, a pressure detector 6 for a pump 1, and a rotary speed detector 8 are transferred to an arithmetic control unit 7. The discharge flow rate of the pump is computed from the pump characteristics and the line resistance curve stored in the arithmetic control unit 7 and the suction well water level, the discharge well water level, the pump discharge pressure and the pump rpm entered. The number of revolution of the pump is controlled so that the discharge flow rate of the pump may attain a target flow rate. This construction makes it possible to control the discharge flow rate of the pump without a flow meter, performing a stabilized flow control even when a flow meter can not be installed.
COPYRIGHT: (C)1982,JPO&Japio
JP12848780A 1980-09-18 1980-09-18 Flow rate control method for pump Pending JPS5756693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12848780A JPS5756693A (en) 1980-09-18 1980-09-18 Flow rate control method for pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12848780A JPS5756693A (en) 1980-09-18 1980-09-18 Flow rate control method for pump

Publications (1)

Publication Number Publication Date
JPS5756693A true JPS5756693A (en) 1982-04-05

Family

ID=14985958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12848780A Pending JPS5756693A (en) 1980-09-18 1980-09-18 Flow rate control method for pump

Country Status (1)

Country Link
JP (1) JPS5756693A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911416A (en) * 1982-07-13 1984-01-21 Toyo Electric Mfg Co Ltd Water supply pressure reducing valve device
JPS5992907U (en) * 1982-12-11 1984-06-23 三相電機株式会社 Constant pressure pump device
JPH062218U (en) * 1992-06-10 1994-01-14 株式会社サンコウ電子研究所 Pinhole detector
US5509788A (en) * 1993-09-27 1996-04-23 Diversey Corporation Flow-metered pumping with load compensation system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911416A (en) * 1982-07-13 1984-01-21 Toyo Electric Mfg Co Ltd Water supply pressure reducing valve device
JPS5992907U (en) * 1982-12-11 1984-06-23 三相電機株式会社 Constant pressure pump device
JPH062218U (en) * 1992-06-10 1994-01-14 株式会社サンコウ電子研究所 Pinhole detector
US5509788A (en) * 1993-09-27 1996-04-23 Diversey Corporation Flow-metered pumping with load compensation system and method

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