EP0903497B1 - Abwassertauchpumpe - Google Patents

Abwassertauchpumpe Download PDF

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Publication number
EP0903497B1
EP0903497B1 EP98402134A EP98402134A EP0903497B1 EP 0903497 B1 EP0903497 B1 EP 0903497B1 EP 98402134 A EP98402134 A EP 98402134A EP 98402134 A EP98402134 A EP 98402134A EP 0903497 B1 EP0903497 B1 EP 0903497B1
Authority
EP
European Patent Office
Prior art keywords
level
pump
effluent
control circuit
detector
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
EP98402134A
Other languages
English (en)
French (fr)
Other versions
EP0903497A1 (de
Inventor
Nicolas Markovits
Louis Symoens
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
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Filing date
Publication date
Application filed by KSB SAS filed Critical KSB SAS
Publication of EP0903497A1 publication Critical patent/EP0903497A1/de
Application granted granted Critical
Publication of EP0903497B1 publication Critical patent/EP0903497B1/de
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

  • JP 04 183991A describes an electric pump group having three level detectors mounted on the receptacle, two of them triggering each a timer. The pump stops at the end of the period of time which expires first. Often there is a lot of effluent in the receptacle.
  • This Japanese document plans to use a pump that does not prime and aims to prevent the liquid residue in the pump when the pump is running empty receptacle is too agitated and heated and produces foam which harms the good subsequent operation of the pump.
  • US 4 311438A provides for measuring the operating time of the pump motor from its last start-up and control the stop time starting at the end of this operating time in function of the previous operating time by increasing the duration when the operating times decrease. It often happens that the receptacle is also not well emptied.
  • the invention overcomes these drawbacks with an electric pump group submersible which allows to obtain an effluent residue in the receptacle also as small as possible, while using static sensors not requiring maintenance.
  • the invention therefore relates to a submersible electric pump group intended for lifting effluent contained in a receptacle, comprising a pump driven by an electric motor controlled by a circuit ordered.
  • a first effluent level detector in the receptacle is preferably mounted on the pump first level and sends a first change signal to the control circuit as soon as the effluent reaches the first level.
  • a second detector level of the effluent in the receptacle is preferably mounted on the pump at a second level lower than the first and sends to the control circuit a second state change signal as soon as the effluent has reached a level lower than the second level.
  • the control circuit includes means to determine the period of time between the dispatch of the first signal and the second signal and intended to calculate, from this lapse of time, the time remaining from the sending of the second signal for stop the engine.
  • a pump priming sensor is provided intended to send to the control circuit, as soon as the defusing of the pump starts, priority override signal.
  • a level sensor 6 is mounted at a higher NH level on the casing of the electric pump.
  • a second level sensor 8 is mounted at an intermediate NM level on the casing 7. The two sensors are connected by conductors to control circuit 3, which takes the form of a printed circuit board.
  • the control circuit shown in Figure 2 includes a conductor 9 connecting the sensor 6 to an AND gate 10 as well as a conductor 28 connecting the sensor 8 to the AND gate 10.
  • the AND gate 10 is connected by a conductor 11 to a time counter 12, which measures the time which flows between the passage of the effluent from the NH level to the NM level and which calculates, from this duration, the duration that remains to elapse for the level of effluent in tank C reaches a level NB (figure 1) just above the level at which the pump is primed.
  • the counter 12 is connected by a conductor 13 to an OR gate 14. It is connected by a conductor 15 to a clock 16, which is connected by a conductor 17 at OR gate 14.
  • the output of OR gate 14 is connected by a conductor 18 to an AND gate 19.
  • a defusing sensor 20, which can preferably be a motor intensity or cosine capteur sensor of the motor 2 is connected by a conductor 21 to the AND gate 19.
  • the door output AND 19 is connected by a conductor 22 to a power relay 23 which supplies motor 2 via a conductor 24.
  • the sensor 8 is connected by a conductor 25 to a NAND gate 26 the output of which is connected by a conductor 27 to the clock 16.
  • the sensor 6 sends by driver 9, door 10, driver 11, counter 12, conductor 13, door 14, conductor 18, door 19 and conductor 22, a change of state signal to the power relay 23, which sets in motion, by driver 24, motor 2.
  • Pump 1 operates and discharges the effluent through the delivery pipe 5.
  • the level in the tank C decreases.
  • the sensor 8 detects it. He sends, by the door 10 and by the conductor 11, a state change signal at the counter 12, which calculates the time that has elapsed since the start of the the pump 2.
  • the counter 12 calculates the time which remains to elapse so that, under the conditions in which the lifting is carried out, the level in the tank C reaches NB level and transmits this information by the driver 15 to the clock 16.
  • the sensor 8 sends at the same time, via the conductor 25, information at the NAND gate 26 and, by the driver 27, at the clock 16.
  • the clock 16 thus determines the remaining time during which the pump 1 must operate and sends a corresponding signal by the conductor 17, the gate 14, conductor 18, gate 19 and conductors 22 to relay 23 of power. This ceases to supply the motor 2 of the pump 1, as soon as this duration has elapsed.
  • the senor 20 If the sensor 20 detects a defusing, it sends, by the conductor 21, door 19 and driver 22, a priority order over all the others, which switches relay 23 off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Claims (3)

  1. Tauchpumpe, die dazu bestimmt ist, Abwasser, das sich in einem Auffang (C) befindet, hochzupumpen, und eine Pumpe (1) beinhaltet, die durch einen elektrischen Motor (2) angetrieben wird, der durch einen Steuerschaltkreis (3) gesteuert wird, der folgendes beinhaltet:
    einen ersten Detektor (6) des Abwasserpegels im Auffang (C), der dazu bestimmt ist, ein erstes Signal der Zustandsveränderung an den Steuerschaltkreis (3) zu senden, sobald das Abwasser einen ersten Pegel (NH) erreicht,
    einen zweiten Detektor (8) des Abwasserpegels im Auffang (C), der dazu bestimmt ist, ein zweites Signal der Zustandsveränderung an den Steuerschaltkreis zu senden, sobald das Abwasser einen Pegel hat, der niedriger liegt als ein zweiter Pegel (NM), der niedriger liegt als der erste (NH),
       dadurch gekennzeichnet, dass
    der Steuerschaltkreis (3) Mittel (12) beinhaltet, die dazu bestimmt sind, die verstrichene Zeit zwischen dem Aussenden des ersten Signals und des zweiten Signals zu bestimmen und aufgrund dieses Zeitablaufs die verbleibende Zeit zu berechnen ab dem Aussenden des zweiten Signals, um den Motor (2) anzuhalten.
  2. Tauchpumpe gemäß Anspruch 1,
    gekennzeichnet durch einen Leerlaufsensor (20) der Pumpe (1), der dazu bestimmt ist, an den Steuerschaltkreis (3) ein vorrangiges Leerlaufsignal zu senden, sobald der Leerlauf der Pumpe (1) beginnt.
  3. Tauchpumpe gemäß Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die zwei Detektoren (6 und 8) auf der Pumpe (1) angebracht sind.
EP98402134A 1997-09-17 1998-08-28 Abwassertauchpumpe Expired - Lifetime EP0903497B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711567A FR2768468A1 (fr) 1997-09-17 1997-09-17 Groupe electropompe submersible permettant un relevage d'effluent en laissant aussi peu de residu que possible
FR9711567 1997-09-17

Publications (2)

Publication Number Publication Date
EP0903497A1 EP0903497A1 (de) 1999-03-24
EP0903497B1 true EP0903497B1 (de) 2003-03-26

Family

ID=9511169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402134A Expired - Lifetime EP0903497B1 (de) 1997-09-17 1998-08-28 Abwassertauchpumpe

Country Status (7)

Country Link
EP (1) EP0903497B1 (de)
AT (1) ATE235656T1 (de)
DE (1) DE69812515T2 (de)
DK (1) DK0903497T3 (de)
ES (1) ES2190573T3 (de)
FR (1) FR2768468A1 (de)
PT (1) PT903497E (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817923B1 (fr) 2000-12-12 2003-03-21 Pompes Salmson Sa Dispositif de pompage pour le relevage de liquide et procede de commande

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
JPS5810187A (ja) * 1981-07-10 1983-01-20 Ebara Corp 給水ポンプ能力判定装置
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
JPH07305693A (ja) * 1994-05-12 1995-11-21 Hitachi Ltd 水中ポンプの制御装置

Also Published As

Publication number Publication date
DK0903497T3 (da) 2003-07-14
EP0903497A1 (de) 1999-03-24
PT903497E (pt) 2003-07-31
DE69812515D1 (de) 2003-04-30
ES2190573T3 (es) 2003-08-01
FR2768468A1 (fr) 1999-03-19
ATE235656T1 (de) 2003-04-15
DE69812515T2 (de) 2003-11-06

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