EP0947702B1 - Submersible motorpump set with signals generator - Google Patents

Submersible motorpump set with signals generator

Info

Publication number
EP0947702B1
EP0947702B1 EP98403010A EP98403010A EP0947702B1 EP 0947702 B1 EP0947702 B1 EP 0947702B1 EP 98403010 A EP98403010 A EP 98403010A EP 98403010 A EP98403010 A EP 98403010A EP 0947702 B1 EP0947702 B1 EP 0947702B1
Authority
EP
European Patent Office
Prior art keywords
motor
control device
liquid
detector
level
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
EP98403010A
Other languages
German (de)
French (fr)
Other versions
EP0947702A1 (en
Inventor
Jacques Berthon
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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9524827&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0947702(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KSB SAS filed Critical KSB SAS
Publication of EP0947702A1 publication Critical patent/EP0947702A1/en
Application granted granted Critical
Publication of EP0947702B1 publication Critical patent/EP0947702B1/en
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
    • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
    • 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

  • Cascade control of lift pumps is achieved by means of level sensors placed in the sump and connected to an electrical box.
  • the order is made through electronic or electromechanical circuits that manage information in from level sensors and internal pump controls.
  • the Lifting unit start-up and shutdown orders pass through the supply wires for pump motors.
  • the electrical control box is generally installed near the sump or in a separate room.
  • the electrical cables are connected to the pump via waterproof wall bushings or connectors (waterproof or overmolded).
  • the present invention overcomes the drawbacks mentioned above by a submersible pump unit, which does not require for its assembly that a simple electrical connection operation without therefore that a experienced electrician has to intervene and has to make adjustments and read a connection diagram for an electrical box that is difficult to understand at all other than him, while having good automatic operation of a cascade of pumps.
  • a submersible motor pump group having the characteristics of the preamble of claim 1 is known for example from the disclosure DE 295 08 802 U.
  • the submersible motor pump group according to the invention is defined in claim 1.
  • the device control is supplied with electric current via a cable power supply and includes a signal generator, which according to a indication provided by the level detector, sends, via the power cable, a signal outside the control device, preference likely to be received by another following pump group the invention when this other group is connected to the power cable.
  • the control device of the first pump can thus, by carrier current, give instructions to the control device of the second pump, make it known that it is working or not working or that it is in good condition, and reciprocally receive the same information from the control device of the second pump and each control device can control its pump accordingly.
  • the detector is fixed to the control device by the sealing means which consist of resin, the same mass of which also coats the level detector which can be capacimetric type. It can also be a radio frequency detector.
  • Two groups 1, 2 motor pumps are immersed in a tank C submersibles.
  • the two groups are identical.
  • Each group includes a motor 3 driving an impeller 4.
  • the motor is surrounded by an envelope 5 impervious to the liquid to be conveyed contained in the tank C.
  • On the lateral face of the casing 5 is fixed a control device 6 which is embedded in liquid tight resin to be transported.
  • This device 6 is integrated by being coated in the same resin with a capacitance level detector 7.
  • the electrical control device 6 which consists of a circuit board printed is connected by a cable 8 to a power supply network 9 electric.
  • the pump set comprises a discharge pipe 10 and a suction port 11.
  • the pump unit 1 is connected by cable 8 and the network 9, as well as by a cable 12, to the other pump unit 2.
  • the detector 7 is connected by a conductor 13 to a signal generator 14.
  • the signal generator 14 is capable of sending signals via cable 8, network 9 and, cable 12 to group 2.
  • generator 14 it is possible to use the integrated circuit TDA 5051 A available from the company Philips Semiconductors .
  • the control device 6 is connected by a conductor 15 to the motor 3.

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)
  • Motor Or Generator Frames (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Tires In General (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The motor/pump group, includes a motor (3) driving an impeller (4), a liquid sealed motor casing (5) and an electrical control unit (6) designed to control the motor as a function of the liquid level in a volume (C) in which the motor/pump group is placed. Liquid level is detected by a sensor (7). The control unit is sealed to prevent ingress of liquid and is fitted to the motor casing. The unit is supplied with electrical current via a cable (8), and it includes a signal generator (14), which, on receipt of a signal from the sensor, sends through the cable to another similar motor group.

Description

Le contrôle de cascade de pompes de relevage (de 2 à "n" pompes), est réalisé par l'intermédiaire de capteurs de niveau placés dans le puisard et reliés à un coffret électrique. La commande est réalisée par l'intermédiaire de circuits électroniques ou électromécaniques qui gèrent les informations en provenance des capteurs de niveau et des contrôles internes des pompes. Les ordres de mise en service et d'arrêt des groupes de relevage passent par les fils d'alimentation des moteurs de pompe. Le coffret électrique de commande est en général installé à proximité du puisard ou dans un local séparé. Le raccordement des câbles électriques à la pompe se réalise par l'intermédiaire de traversées de paroi étanches ou de connecteurs (étanches ou surmoulés).Cascade control of lift pumps (from 2 to "n" pumps), is achieved by means of level sensors placed in the sump and connected to an electrical box. The order is made through electronic or electromechanical circuits that manage information in from level sensors and internal pump controls. The Lifting unit start-up and shutdown orders pass through the supply wires for pump motors. The electrical control box is generally installed near the sump or in a separate room. The electrical cables are connected to the pump via waterproof wall bushings or connectors (waterproof or overmolded).

Tous les composants capteurs, pompes de relevage, coffret de commande étant séparés, leurs raccordements entre eux doivent être réalisés par un électricien avec le respect des normes d'installation et de sécurité.All sensor components, lift pumps, control being separated, their connections between them must be carried out by an electrician with respect for installation and safety standards.

La complexité des installations se traduit souvent par des difficultés de fonctionnement des dispositifs et une maintenance délicate.The complexity of the installations often results in difficulties of device operation and delicate maintenance.

La présente invention pallie les inconvénients mentionnés ci-dessus par un groupe motopompe submersible, qui ne nécessite pour son montage qu'une simple opération de branchement électrique sans donc qu'un électricien averti ait à intervenir et ait à procéder à des réglages et à la lecture d'un schéma de raccordement d'un coffret électrique peu intelligible à tout autre que lui, tout en ayant une bonne automaticité de fonctionnement d'une cascade de pompes.The present invention overcomes the drawbacks mentioned above by a submersible pump unit, which does not require for its assembly that a simple electrical connection operation without therefore that a experienced electrician has to intervene and has to make adjustments and read a connection diagram for an electrical box that is difficult to understand at all other than him, while having good automatic operation of a cascade of pumps.

Un groupe motopompe submersible ayant les caractéristiques du préambule de la revendication 1 est connu par example de la divulgation DE 295 08 802 U.A submersible motor pump group having the characteristics of the preamble of claim 1 is known for example from the disclosure DE 295 08 802 U.

Le groupe motopompe submersible suivant l'invention est défini à la revendication 1.The submersible motor pump group according to the invention is defined in claim 1.

On ne cherche plus comme on le faisait jusqu'ici à commander le moteur à l'aide d'un coffret ou armoire électrique qui n'avait pas besoin d'être étanche, parce qu'il était placé à distance du moteur et donc en dehors du liquide à véhiculer et qui pouvait s'adapter à de nombreux types de moteur pourvu qu'un électricien veuille bien se charger du travail de réglage et de montage. Bien au contraire, le dispositif de commande est maintenant affecté au moteur mais, grâce au fait que le dispositif de commande est fixé de fabrication sur l'enveloppe du moteur, on peut régler le dispositif de commande en usine et se contenter, puisqu'il a déjà été réglé en usine, de le brancher sans avoir à effectuer de réglage. Le montage est simplifié à l'extrême. De plus, comme le dispositif de commande est maintenant à proximité immédiate du détecteur de niveau, les liaisons entre eux sont très simplifiées, ce qui contribue beaucoup à diminuer la complexité de l'ensemble. Le dispositif de commande est alimenté en courant électrique par l'intermédiaire d'un câble d'alimentation et comporte un générateur de signaux, qui en fonction d'une indication fournie par le détecteur de niveau, envoie, par l'intermédiaire du câble d'alimentation, un signal à l'extérieur du dispositif de commande, de préférence susceptible d'être reçu par un autre groupe motopompe suivant l'invention lorsque cet autre groupe est raccordé au câble d'alimentation. Le dispositif de commande de la première pompe peut ainsi, par courant porteur, donner des instructions au dispositif de commande de la deuxième pompe, lui faire savoir qu'il fonctionne ou qu'il ne fonctionne pas ou qu'il est en bon état, et recevoir réciproquement les mêmes informations du dispositif de commande de la seconde pompe et chaque dispositif de commande peut commander sa pompe en conséquence.We are no longer looking to order the motor using an electrical box or cabinet which did not need to be waterproof, because it was placed away from the engine and therefore outside the liquid to be transported and which could adapt to many types of engine provided that an electrician is willing to do the work of adjusting and mounting. On the contrary, the control device is now affected to the engine but, thanks to the fact that the control device is fixed manufacturing on the motor casing, you can adjust the control device in the factory and be satisfied, since it has already been adjusted in the factory, to connect it without having to make any adjustments. The assembly is simplified to the extreme. Of plus, as the control device is now in close proximity of the level detector, the connections between them are very simplified, which contributes greatly to reducing the complexity of the whole. The device control is supplied with electric current via a cable power supply and includes a signal generator, which according to a indication provided by the level detector, sends, via the power cable, a signal outside the control device, preference likely to be received by another following pump group the invention when this other group is connected to the power cable. The control device of the first pump can thus, by carrier current, give instructions to the control device of the second pump, make it known that it is working or not working or that it is in good condition, and reciprocally receive the same information from the control device of the second pump and each control device can control its pump accordingly.

Suivant un mode de réalisation avantageux, le détecteur est fixé au dispositif de commande par les moyens d'étanchéité qui sont constitués de résine, dont la même masse enrobe aussi le détecteur de niveau qui peut être de type capacimétrique. Ce peut être aussi un détecteur à radio fréquence.According to an advantageous embodiment, the detector is fixed to the control device by the sealing means which consist of resin, the same mass of which also coats the level detector which can be capacimetric type. It can also be a radio frequency detector.

La figure unique du dessin annexé illustre l'invention.The single figure of the accompanying drawing illustrates the invention.

Dans une cuve C sont immergés deux groupes 1, 2 motopompes submersibles. Les deux groupes sont identiques. Chaque groupe comprend un moteur 3 entraínant un impulseur 4. Le moteur est entouré d'une enveloppe 5 étanche au liquide à véhiculer contenu dans la cuve C. Sur la face latérale de l'enveloppe 5 est fixé un dispositif 6 de commande qui est enrobé dans de la résine étanche au liquide à véhiculer. A ce dispositif 6 est intégré en étant enrobé dans la même résine un détecteur 7 capacimètrique de niveau. Le dispositif 6 électrique de commande qui est constitué par une carte à circuit imprimé est relié par un câble 8 à un réseau 9 d'alimentation en courant électrique. Le groupe motopompe comporte une tubulure 10 de refoulement et un orifice 11 d'aspiration.Two groups 1, 2 motor pumps are immersed in a tank C submersibles. The two groups are identical. Each group includes a motor 3 driving an impeller 4. The motor is surrounded by an envelope 5 impervious to the liquid to be conveyed contained in the tank C. On the lateral face of the casing 5 is fixed a control device 6 which is embedded in liquid tight resin to be transported. This device 6 is integrated by being coated in the same resin with a capacitance level detector 7. The electrical control device 6 which consists of a circuit board printed is connected by a cable 8 to a power supply network 9 electric. The pump set comprises a discharge pipe 10 and a suction port 11.

Le groupe motopompe 1 est relié par le câble 8 et le réseau 9, ainsi que par un câble 12, à l'autre groupe motopompe 2.
Dans le dispositif 6 de commande, le détecteur 7 est relié par un conducteur 13 à un générateur 14 de signaux. Le générateur 14 de signaux est susceptible d'envoyer des signaux par le câble 8, le réseau 9 et, le câble 12 au groupe 2. Comme générateur 14, on peut utiliser le circuit intégré TDA 5051 A disponible chez la société Philips Semi-conducteurs.The pump unit 1 is connected by cable 8 and the network 9, as well as by a cable 12, to the other pump unit 2.
In the control device 6, the detector 7 is connected by a conductor 13 to a signal generator 14. The signal generator 14 is capable of sending signals via cable 8, network 9 and, cable 12 to group 2. As generator 14, it is possible to use the integrated circuit TDA 5051 A available from the company Philips Semiconductors .

Le dispositif 6 de commande est relié par un conducteur 15 au moteur 3.The control device 6 is connected by a conductor 15 to the motor 3.

Pour monter les deux groupes 1,2 en cascade, il suffit de brancher les câbles 8 et 12 sur le réseau 9.To cascade the two groups 1,2, simply connect the cables 8 and 12 on the network 9.

Bien entendu, on peut prévoir un nombre de groupes plus grand que deux.Of course, we can provide for a larger number of groups than of them.

Claims (5)

  1. Submersible motor pump unit, comprising a motor (3) driving an impeller (4), a leaktight casing (5) impervious to the liquid to be conveyed for the motor (3) and an electrical device (6) intended to control the motor (3) as a function of the level of the liquid in a tank (C) in which the unit is located, which level is detected by a level detector (7), the control device (6) being furnished with leaktightness means protecting it against any contact with the liquid in the tank and being fixed to the casing (5) of the motor (3) and is supplied with electrical current by way of a supply cable (8), characterized in that the control device (6) comprises a signals generator (14) which, as a function of an indication provided by the level detector (7) linked to the signals generator (14) by an electrical conductor (13), sends out, by way of the supply cable (8), a signal from the control device, capable of being received by another identical motor pump unit connected to the supply cable (8).
  2. Unit according to Claim 1, characterized in that the detector (7) is fixed to the control device (6) furnished with the leaktightness means.
  3. Unit according to Claim 1 or 2, characterized in that the detector (7) is fixed to the control device (6) by the leaktightness means.
  4. Unit according to Claim 1, 2 or 3, characterized in that the leaktightness means consist of resin in which the control device (6) is enveloped.
  5. Unit according to one of Claims 1 to 4, characterized in that the level detector is enveloped at least in part in the same resin.
EP98403010A 1998-04-03 1998-12-02 Submersible motorpump set with signals generator Expired - Lifetime EP0947702B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804165 1998-04-03
FR9804165A FR2777047B1 (en) 1998-04-03 1998-04-03 SUBMERSIBLE MOTOR PUMP WITH CONTROL DEVICE FIXED ON THE MOTOR HOUSING

Publications (2)

Publication Number Publication Date
EP0947702A1 EP0947702A1 (en) 1999-10-06
EP0947702B1 true EP0947702B1 (en) 2003-10-08

Family

ID=9524827

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98403010A Expired - Lifetime EP0947702B1 (en) 1998-04-03 1998-12-02 Submersible motorpump set with signals generator
EP99400093A Revoked EP0947703B1 (en) 1998-04-03 1999-01-15 Submersible motorpump unit with control system mounted on the motor housing

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP99400093A Revoked EP0947703B1 (en) 1998-04-03 1999-01-15 Submersible motorpump unit with control system mounted on the motor housing

Country Status (7)

Country Link
EP (2) EP0947702B1 (en)
AT (2) ATE251719T1 (en)
DE (2) DE69818797T2 (en)
DK (2) DK0947702T3 (en)
ES (2) ES2203910T3 (en)
FR (1) FR2777047B1 (en)
PT (2) PT947702E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824601B1 (en) * 2001-05-09 2003-08-08 Ksb Sa MOTOR PUMP GROUP WITH TIMING OF THE POWER ON OF THE MOTOR

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021788A (en) * 1957-05-02 1962-02-20 American Crucible Products Com Submersible pump
US4171186A (en) * 1977-08-12 1979-10-16 Hydronix, Inc. Submerged pump control
JPH078877Y2 (en) * 1989-03-07 1995-03-06 株式会社荏原製作所 Submersible pump controller
GB2248948A (en) * 1990-10-19 1992-04-22 Stephen Groves Electron 10 pump activator
US5324171A (en) * 1993-05-14 1994-06-28 Liberty Pumps Pump assembly including a hermetically sealed switch capsule for housing a magnetically actuated switch
US5449274A (en) * 1994-03-24 1995-09-12 Metropolitan Pump Company Sump system having timed switching of plural pumps
DE29508802U1 (en) * 1995-05-27 1996-09-26 Hanning & Kahl GmbH & Co., 33813 Oerlinghausen Submersible or slurp pump
DE19654892C2 (en) * 1996-05-02 1999-07-15 Hanning & Kahl Gmbh & Co Submersible pump

Also Published As

Publication number Publication date
EP0947702A1 (en) 1999-10-06
PT947703E (en) 2006-08-31
PT947702E (en) 2004-02-27
DE69930889D1 (en) 2006-05-24
FR2777047A1 (en) 1999-10-08
EP0947703B1 (en) 2006-04-19
EP0947703A1 (en) 1999-10-06
FR2777047B1 (en) 2000-06-02
DE69930889T2 (en) 2006-11-23
DK0947702T3 (en) 2004-01-19
ES2203910T3 (en) 2004-04-16
ES2262294T3 (en) 2006-11-16
DE69818797D1 (en) 2003-11-13
ATE323834T1 (en) 2006-05-15
DE69818797T2 (en) 2004-05-06
DK0947703T3 (en) 2006-08-21
ATE251719T1 (en) 2003-10-15

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