EP0903498B1 - Groupe electropompe submersible et procede pour le faire fonctionner - Google Patents

Groupe electropompe submersible et procede pour le faire fonctionner Download PDF

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Publication number
EP0903498B1
EP0903498B1 EP98402135A EP98402135A EP0903498B1 EP 0903498 B1 EP0903498 B1 EP 0903498B1 EP 98402135 A EP98402135 A EP 98402135A EP 98402135 A EP98402135 A EP 98402135A EP 0903498 B1 EP0903498 B1 EP 0903498B1
Authority
EP
European Patent Office
Prior art keywords
pump
effluent
level
sensor
control circuit
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.)
Expired - Lifetime
Application number
EP98402135A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0903498A1 (fr
Inventor
Louis Symoens
Jacques Berthon
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.)
KSB SAS
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
Publication of EP0903498A1 publication Critical patent/EP0903498A1/fr
Application granted granted Critical
Publication of EP0903498B1 publication Critical patent/EP0903498B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D15/0209—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/025—Stopping, starting, unloading or idling control by means of floats

Definitions

  • a submersible electric pump group which includes a pump driven by an electric motor controlled by a circuit ordered. Motor is energized as soon as a high level sensor detects the presence of the effluent.
  • the invention relates to a submersible electric pump group of the type mentioned above, in which one can dispense with having a sensor in low level to prevent defusing the pump, while having a very small amount of residual effluent in the receptacle.
  • An electric pump unit according to the invention is defined in claim 1 and improved in claim 2.
  • the submersible electric pump group according to the invention is capable of to recognize the volume it must repress before stopping so as not to be defused.
  • the group When the group is to be put for the first time in a receptacle, we operate it, which determines the level of defusing in the receptacle.
  • the means of determination of a subsequent period of operation determine a new period, called subsequent duration of operation shorter than the initial duration, in so that, on the one hand, we are sure that there will be no more defusing, and that, on the other hand, we can make this later duration very close of the initial duration, so that the residual quantity of effluent remaining in the receptacle can be lowered to a very small value.
  • FIG. 1 represents a submersible electric pump group according to the invention which comprises a pump 1 having a suction opening 2 and a discharge pipe 3 outside a tank C, in which the group is intended to be placed to raise the effluent it contains.
  • the pump 1 is driven by an electric motor 4 controlled by a circuit 5 control in the form of a printed circuit board.
  • a sensor 6 of level which detects a high NH level in tank C, from which the group starts up and pushes back the effluent contained in tank C by the tubing 3.
  • FIG. 1 also shows a low NB level, at which wants the control circuit 5 to stop pump 1 and an ND level of defusing, symbolically represented in Figure 1 by the reference 7 but which in fact can be obtained by a sensor of a variation of the cosine ⁇ or of the intensity of motor 4 when the pump is about to prime.
  • the control circuit shown in Figure 2 comprises from the sensor 6 a conductor 8 leading to an entrance to a door 9 AND.
  • the second input of the AND gate is connected to the sensor 7 by a conductor 10.
  • the output of door 9 is connected by a conductor 11 to a junction point 12.
  • a conductor 13 leads to an entrance of a carries 14 OR, while another conductor 15 leads to a clock 16, which is connected by a conductor 17 to means 18 for determining of a later operating time shorter than the measured time by the clock 16.
  • Said means are connected by a conductor 19 to the input a door 20 AND the other input of which is connected by a conductor 21 and by via a junction point 22 to the sensor 6.
  • the junction point 22 is connected by a conductor 23 to an input of the means 18.
  • the output of the door 20 AND is connected by a conductor 24 to an input of door 14 OR the output of which is connected by a conductor 25 to a door 26 AND.
  • the other entry of door 26 AND is connected by a
  • the output of door 26 AND is connected by a conductor 28 to a relay 29 of power which controls by a driver 30 the motor 4 of the pump 1.
  • sensor 6 When we put the pump group 1, 4 for the first time in a tank C and when the level of effluent in the tank reaches the NH level, sensor 6 detects this level. It sends by driver 8, the door 9 AND, driver 11, point 12, driver 13, door 14 OR, conductor 25, AND gate, AND gate 26, conductor 28, relay 29 and conductor 30, a change of state signal which causes motor 4 to be switched on energized and drives the pump 1. Effluent is discharged outside the tank C via the delivery pipe 3. The level of effluent in tank C drops below the NH level.
  • the sensor 7 sends a signal from the conductor 10 change of state which arrives by the door 9 AND, by the driver 11, by the point 12 and by the driver 15 to the clock 16 which stops counting the operating time.
  • This duration is transmitted by the driver 17 to means 18 which determine a later operating time less longer than the original duration.
  • the signal corresponding to this subsequent duration is transmitted by conductor 19 to gate 20 AND and by conductor 24 to gate 14 OR, then through conductor 25 and through AND gate and conductor 28 to the power relay 29, which by the driver 30 operates the motor 4 and therefore the pump 1 during the subsequent operating time, this time being calculated from the moment the effluent contained in the tank reaches again the NH level as noted by sensor 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Secondary Cells (AREA)
  • Inert Electrodes (AREA)
  • Cell Separators (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP98402135A 1997-09-17 1998-08-28 Groupe electropompe submersible et procede pour le faire fonctionner Expired - Lifetime EP0903498B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711566 1997-09-17
FR9711566A FR2768467B1 (fr) 1997-09-17 1997-09-17 Groupe electropompe submersible reconnaissant son volume de fonctionnement et procede pour faire fonctionner ce groupe electropompe submersible

Publications (2)

Publication Number Publication Date
EP0903498A1 EP0903498A1 (fr) 1999-03-24
EP0903498B1 true EP0903498B1 (fr) 2003-06-04

Family

ID=9511168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402135A Expired - Lifetime EP0903498B1 (fr) 1997-09-17 1998-08-28 Groupe electropompe submersible et procede pour le faire fonctionner

Country Status (7)

Country Link
EP (1) EP0903498B1 (pt)
AT (1) ATE242428T1 (pt)
DE (1) DE69815238T2 (pt)
DK (1) DK0903498T3 (pt)
ES (1) ES2195289T3 (pt)
FR (1) FR2768467B1 (pt)
PT (1) PT903498E (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11162496B2 (en) 2016-11-11 2021-11-02 Wayne/Scott Fetzer Company Pump with external electrical components and related methods

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE420788B (sv) * 1978-11-20 1981-10-26 Elfi Innovationer Sett och anordning for att styra igangsettningen av en intermittent arbetande pump
JPH0674794B2 (ja) * 1985-05-09 1994-09-21 株式会社日立製作所 給水ポンプ運転制御装置
JPH0278776A (ja) * 1988-09-16 1990-03-19 Touka Seiki:Kk 液面検出型自動揚水装置
JPH07103865B2 (ja) * 1990-11-15 1995-11-08 株式会社荏原製作所 汚水・汚物ポンプの運転停止方法

Also Published As

Publication number Publication date
PT903498E (pt) 2003-09-30
DK0903498T3 (da) 2003-09-22
DE69815238T2 (de) 2004-04-22
FR2768467A1 (fr) 1999-03-19
FR2768467B1 (fr) 2004-11-12
EP0903498A1 (fr) 1999-03-24
DE69815238D1 (de) 2003-07-10
ES2195289T3 (es) 2003-12-01
ATE242428T1 (de) 2003-06-15

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