EP0605771B1 - Dispositif pour la mise en marche et l'arrêt d'une motopompe submersible - Google Patents

Dispositif pour la mise en marche et l'arrêt d'une motopompe submersible Download PDF

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Publication number
EP0605771B1
EP0605771B1 EP93118187A EP93118187A EP0605771B1 EP 0605771 B1 EP0605771 B1 EP 0605771B1 EP 93118187 A EP93118187 A EP 93118187A EP 93118187 A EP93118187 A EP 93118187A EP 0605771 B1 EP0605771 B1 EP 0605771B1
Authority
EP
European Patent Office
Prior art keywords
switching
pressure
pump
level
submersible
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
EP93118187A
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German (de)
English (en)
Other versions
EP0605771A1 (fr
Inventor
Werner Arnswald
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.)
Wilo GmbH
Original Assignee
Wilo GmbH
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Filing date
Publication date
Application filed by Wilo GmbH filed Critical Wilo GmbH
Publication of EP0605771A1 publication Critical patent/EP0605771A1/fr
Application granted granted Critical
Publication of EP0605771B1 publication Critical patent/EP0605771B1/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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • 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

Definitions

  • the invention relates to a device for switching a submersible pump on and off by a pressure sensor which measures the level of the liquid in the chamber surrounding the submersible pump by the liquid pressure in the chamber and which is fastened in or on the outside of the motor or pump housing.
  • a pressure sensor is known from US 41 41 025, which uses the different pressure sensitivity of two semiconducting materials.
  • the two semiconductor layers are alternately sandwiched one on top of the other.
  • the disadvantage of this sensor is the high design effort and the associated costs.
  • the object of the invention is to improve a device of the type mentioned in such a way that it has high accuracy and small dimensions with great immunity to interference and simple construction.
  • the pressure sensor has a pressure-sensitive ohmic resistor and that the resistor has a conductor network with two equally spaced non-contacting conductors, the distance of which is bridged by semiconductor polymer film, which reduces the resistance when pressure is applied in the normal direction .
  • the sensor of the device is a pressure-sensitive resistor of a few square centimeters in size can be attached to the pump exterior as a component that is not susceptible to faults, for example by gluing. Since it is an ohmic resistor, the two electrical outgoing lines do not require a sheath, as is common for protection against electrical and magnetic interference in electronic components.
  • This switchgear has two knobs, one of which can be used to change the distance between the switch-on and switch-off levels, and the second can be used to move a fixed distance between the two levels together.
  • the transducer is neither susceptible to electrical and magnetic interference, nor to contamination, nor to additives and foam in the wastewater, allows the level to be changed remotely and thus the pumps to be switched on and off.
  • the switching levels customary for submersible pumps can be recorded and processed as a signal: switch-on level, switch-off level and alarm level. If there are other levels to be measured, these can also be measured using the sensor attached to the outside of the pump. The total cost is exceptionally low.
  • the resistor has a conductor network with two conductors which are guided at the same distance from one another and are not touching, the spacing of which is bridged by a semiconductor polymer film which reduces the resistance when the pressure is applied in the normal direction.
  • a structurally simple electrical connection is then reached when the two cables of the resistor are led into the interior of the pump or motor housing and run from there through a cable, in particular the motor connection cable to a switching device.
  • the switching device should have two controllers, the first of which determines the switch-on and switch-off level and the second shifts the switch-on and switch-off level at a constant distance, so that particularly simple regulation or control can be achieved.
  • An embodiment of the invention is shown in a side view.
  • the pump has a pump housing 1 that forms a pump chamber in which a rotor runs.
  • the rotor is driven by an electric motor 2, the motor housing 3 of which is attached to the pump housing.
  • the housing and the interior are sealed against the ingress of liquid and in particular the cables 4 emerging at the top of the rotor are also provided with seals.
  • a pressure sensor 5 is fastened to the outside of the motor housing 3, in particular by gluing.
  • the two electrical lines of the pressure sensor 5 lead into the interior of the motor housing 3 and from there into the cable 4 to an externally arranged switching device 6 which has two rotary knobs 7, 8.
  • the distance between the switch-on and switch-off levels can be changed by means of the rotary knob 7 and the distance between the two levels is shifted by the rotary knob 8.
  • another type of adjustment in particular push buttons, can also be provided.
  • the pressure sensor 5 is a membrane switch with two Polymer films. A conductive pattern in the form of interlocking electrodes is applied to one of the two polymer films. A semiconductor polymer is applied to this conductor pattern. If pressure is applied to this sensor in the normal direction, the resistance decreases so that the distance between the two conductors becomes more permeable to current.
  • the two conductor networks which do not touch one another can intermesh like a comb, so that there is a relatively large distance range between the two conductors, i.e. with a constant distance, the distance range is relatively long.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Measuring Fluid Pressure (AREA)
  • Motor Or Generator Frames (AREA)

Claims (3)

  1. Dispositif pour la mise en marche et l'arrêt d'une motopompe submersible par un capteur de pression (5) qui mesure la hauteur du niveau de liquide dans la chambre entourant la motopompe submersible par la pression de liquide dans la chambre et qui est fixé dans ou au côté extérieur du carter du moteur ou de la pompe,
    caractérisé en ce que le capteur de pression (5) présente une résistance ohmique sensible à la pression et en ce que la résistance présente un réseau de conducteurs avec deux conducteurs guidés côte à côte à la même distance, ne se touchant pas, dont l'intervalle est ponté par une feuille de polymère semiconducteur qui diminue la résistance pour une pression appliquée en direction normale.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que les deux câbles de la résistance sont guidés à l'intérieur du carter (3) de la pompe ou du moteur et s'étendent de là jusqu'à un appareil de coupure (6) par un câble (4), en particulier le câble de raccordement du moteur.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que l'appareil de coupure (6) présente deux régulateurs (7, 8) dont le premier (7) détermine le niveau de mise en marche et d'arrêt et le second (8) décale le niveau de mise en marche et d'arrêt d'un intervalle constant.
EP93118187A 1992-12-30 1993-11-10 Dispositif pour la mise en marche et l'arrêt d'une motopompe submersible Expired - Lifetime EP0605771B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4244417A DE4244417A1 (de) 1992-12-30 1992-12-30 Vorrichtung zum Ein- und Ausschalten einer Tauchmotorpumpe
DE4244417 1992-12-30

Publications (2)

Publication Number Publication Date
EP0605771A1 EP0605771A1 (fr) 1994-07-13
EP0605771B1 true EP0605771B1 (fr) 1996-03-27

Family

ID=6476756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93118187A Expired - Lifetime EP0605771B1 (fr) 1992-12-30 1993-11-10 Dispositif pour la mise en marche et l'arrêt d'une motopompe submersible

Country Status (4)

Country Link
US (1) US5466127A (fr)
EP (1) EP0605771B1 (fr)
DE (2) DE4244417A1 (fr)
ES (1) ES2085095T3 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634522A (en) * 1996-05-31 1997-06-03 Hershberger; Michael D. Liquid level detection for artificial lift system control
US5833437A (en) * 1996-07-02 1998-11-10 Shurflo Pump Manufacturing Co. Bilge pump
FR2756020B1 (fr) * 1996-11-19 1999-01-08 Ksb Sa Pompe a dispositif fixe de mise en marche
DE10039117C2 (de) * 2000-08-07 2003-04-30 Comet Pumpen Systemtechnik Gmb Tauchpumpenanordnung
US6364620B1 (en) * 2000-08-29 2002-04-02 Zoeller Company Submersible pump containing two levels of moisture sensors
DE10118525B4 (de) * 2001-04-14 2005-03-17 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Vorrichtung zum Absaugen von Kühlschmierstoff aus einem Sammelbecken
US6715994B2 (en) 2001-11-12 2004-04-06 Shurflo Pump Manufacturing Co., Inc. Bilge pump
US7748965B2 (en) 2005-10-17 2010-07-06 Itt Manufacturing Enterprises, Inc. Livewell/baitwell pump featuring rotating transom pickup tube
US20090129938A1 (en) * 2007-11-15 2009-05-21 Nigro Scott A Device mounting apparatus for a fluid control system
US20100098555A1 (en) * 2008-10-17 2010-04-22 Wen Hua He Submersible Water Pump Device
WO2011022483A1 (fr) * 2009-08-18 2011-02-24 Itt Manufacturing Enterprises, Inc. Pompe submersible encapsulée
RU2513812C2 (ru) * 2009-10-21 2014-04-20 Шлюмбергер Текнолоджи Б.В. Система, способ и считываемый компьютером носитель для вычисления расходов скважин, создаваемых электропогружными насосами
US8727737B2 (en) 2010-10-22 2014-05-20 Grundfos Pumps Corporation Submersible pump system
US9121270B2 (en) 2011-05-26 2015-09-01 Grundfos Pumps Corporation Pump system
EP2746477B1 (fr) * 2012-12-20 2019-10-16 Grundfos Holding A/S Procédé pour faire fonctionner une station de pompage des eaux usées
ES2682035T3 (es) * 2013-03-19 2018-09-18 Flow Control Llc. Bomba de bajo perfil apta para su montaje en diversas configuraciones
US11613985B2 (en) 2013-11-13 2023-03-28 Sensia Llc Well alarms and event detection
BR112016024949A2 (pt) 2014-04-25 2017-08-15 Schlumberger Technology Bv sistema de bomba de submersão elétrica, método, e um ou mais meios de armazenamento legível por computador
US10876393B2 (en) 2014-05-23 2020-12-29 Sensia Llc Submersible electrical system assessment
US10871058B2 (en) 2018-04-24 2020-12-22 Guy Morrison, III Processes and systems for injecting a fluid into a wellbore
US11041349B2 (en) 2018-10-11 2021-06-22 Schlumberger Technology Corporation Automatic shift detection for oil and gas production system
US11205896B2 (en) 2018-11-21 2021-12-21 Black & Decker Inc. Solar power system
EP3875765A1 (fr) * 2020-03-02 2021-09-08 Husqvarna Ab Pompe submersible avec capteurs tactiles

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DE1231033B (de) * 1963-09-13 1966-12-22 Siemens Ag Druckempfindliches Halbleiterbauelement mit drei Zonen abwechselnd entgegengesetztenLeitungstyps und einem Stempel auf einer Zone
US3280751A (en) * 1964-03-23 1966-10-25 F E Myers & Bro Co Sump pump
US3329023A (en) * 1964-08-03 1967-07-04 Schaevitz Bytrex Inc Semiconductor strain gage transducers
US3318249A (en) * 1965-08-05 1967-05-09 Loeser Robert Submersible drive apparatus
US3753196A (en) * 1971-10-05 1973-08-14 Kulite Semiconductor Products Transducers employing integral protective coatings and supports
US3992130A (en) * 1972-12-15 1976-11-16 Jacuzzi Bros. Incorporated Sump pump system and pressure responsive switch assembly therefor
US3975115A (en) * 1975-02-07 1976-08-17 Hydrodyne Development Company Pump control system
DE2517769A1 (de) * 1975-04-18 1976-10-28 Stephen Hanson Lampen Spannungsteiler
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GB2097964A (en) * 1981-04-09 1982-11-10 Patscentre Benelux Sa Nv Improvements in the control of liquid level
US4581613A (en) * 1982-05-10 1986-04-08 Hughes Tool Company Submersible pump telemetry system
US4477230A (en) * 1982-09-30 1984-10-16 Hughes Tool Company Continuous pressure and temperature readout for submersible pumps
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FR2551804B1 (fr) * 1983-09-12 1988-02-05 Inst Francais Du Petrole Dispositif utilisable notamment pour le pompage d'un fluide tres visqueux et/ou contenant une proportion notable de gaz, particulierement pour la production de petrole
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DE3624950A1 (de) * 1986-07-23 1988-01-28 Klein Schanzlin & Becker Ag Schaltvorrichtung fuer tauchmotorpumpen
JPH01217231A (ja) * 1988-02-26 1989-08-30 Fujikura Ltd 半導体圧力センサ
US4992030A (en) * 1989-05-02 1991-02-12 Hasslen Iii John S Sump draining apparatus
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JPH073374B2 (ja) * 1989-11-22 1995-01-18 工業技術院長 圧覚センサ

Also Published As

Publication number Publication date
US5466127A (en) 1995-11-14
DE4244417A1 (de) 1994-07-07
ES2085095T3 (es) 1996-05-16
EP0605771A1 (fr) 1994-07-13
DE59302051D1 (de) 1996-05-02

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