DK1256723T3 - Motor pump unit whose shutdown is controlled by flow analysis - Google Patents

Motor pump unit whose shutdown is controlled by flow analysis

Info

Publication number
DK1256723T3
DK1256723T3 DK02290925T DK02290925T DK1256723T3 DK 1256723 T3 DK1256723 T3 DK 1256723T3 DK 02290925 T DK02290925 T DK 02290925T DK 02290925 T DK02290925 T DK 02290925T DK 1256723 T3 DK1256723 T3 DK 1256723T3
Authority
DK
Denmark
Prior art keywords
phase
motor
current
measuring
pump
Prior art date
Application number
DK02290925T
Other languages
Danish (da)
Inventor
Pascal Vinzio
Louis Symoens
Jacques Berthon
Original Assignee
Ksb Sas
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 Ksb Sas filed Critical Ksb Sas
Application granted granted Critical
Publication of DK1256723T3 publication Critical patent/DK1256723T3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
    • F04D15/0254—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump the condition being speed or load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F04D15/0236—Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Electric Motors In General (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Flow Control (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Amplifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The motor pump includes a high liquid level sensor (6) connected to an input of a microprocessor (8) and out of phase measuring system for measuring so as to send a start signal to the motor or pump only when the sensors detects a high liquid level. An out of phase stability monitoring unit includes a system for measuring the current level and includes an intermediate liquid level sensor (7) which detects a level between high and low corresponding to motor voltage cutoff. The immersed motor/pump unit includes a pump (2) and AC motor (1) having at least a working phase and a microprocessor integrated in one of the inputs to which a supply voltage is applied and to another input from which is sent a signal representing the current absorbed in the motor phase. The microprocessor includes a system for measuring the phase difference between voltage and current. The microprocessor includes: (a) A system for continuous monitoring of the phase difference stability after it has settled at a constant value; (b) Memory for storing out of phase values, and; (c) Supply voltage cutoff switches which interrupt the supply voltage to the motor when, after out of phase is stabilized, the out of phase value, during a set time period, reaches a value greater than the stabilized value and the signal representing the absorbed current is the current passing only through the working phase.
DK02290925T 2001-05-09 2002-04-12 Motor pump unit whose shutdown is controlled by flow analysis DK1256723T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0106106A FR2824600B1 (en) 2001-05-09 2001-05-09 MOTOR PUMP GROUP WHICH SHUT DOWN BY CURRENT ANALYSIS
EP02290925A EP1256723B1 (en) 2001-05-09 2002-04-12 Motor pump unit controlled by electric current analysis

Publications (1)

Publication Number Publication Date
DK1256723T3 true DK1256723T3 (en) 2005-10-17

Family

ID=8863069

Family Applications (1)

Application Number Title Priority Date Filing Date
DK02290925T DK1256723T3 (en) 2001-05-09 2002-04-12 Motor pump unit whose shutdown is controlled by flow analysis

Country Status (7)

Country Link
EP (1) EP1256723B1 (en)
AT (1) ATE299243T1 (en)
DE (1) DE60204923T2 (en)
DK (1) DK1256723T3 (en)
ES (1) ES2246005T3 (en)
FR (1) FR2824600B1 (en)
PT (1) PT1256723E (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860271B1 (en) * 2003-09-30 2008-05-02 Realisations Electroniques Eur DEVICE FOR PROTECTING IMMERED PUMPS
FR2896048B1 (en) * 2006-01-11 2008-07-04 Realisations Electroniques Eur METHOD AND DETECTION SYSTEM FOR AN ELECTRICAL DEVICE
FR2951267B1 (en) * 2009-10-14 2011-10-28 Peugeot Citroen Automobiles Sa DEVICE FOR DETECTING THE LEVEL OF LIQUID IN A RESERVOIR
DE102009053322B4 (en) 2009-11-17 2019-10-17 Endo-Technik Wolfgang Griesat Gmbh Device for controlling the flow of a peristaltic pump
CN203962360U (en) * 2014-07-11 2014-11-26 君禾泵业股份有限公司 The automatic control of pump electronic water level switch
CN104481891B (en) * 2014-11-27 2019-01-15 浙江富士精工科技有限公司 Air-conditioning drainage pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473338A (en) * 1980-09-15 1984-09-25 Garmong Victor H Controlled well pump and method of analyzing well production
US5015151A (en) * 1989-08-21 1991-05-14 Shell Oil Company Motor controller for electrical submersible pumps
US5833437A (en) * 1996-07-02 1998-11-10 Shurflo Pump Manufacturing Co. Bilge pump

Also Published As

Publication number Publication date
EP1256723B1 (en) 2005-07-06
ATE299243T1 (en) 2005-07-15
FR2824600B1 (en) 2004-02-20
DE60204923D1 (en) 2005-08-11
ES2246005T3 (en) 2006-02-01
FR2824600A1 (en) 2002-11-15
DE60204923T2 (en) 2006-05-24
PT1256723E (en) 2005-11-30
EP1256723A1 (en) 2002-11-13

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