EP2202411A2 - Dispositif et procédé pour une installation transportant du liquide - Google Patents

Dispositif et procédé pour une installation transportant du liquide Download PDF

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Publication number
EP2202411A2
EP2202411A2 EP09015231A EP09015231A EP2202411A2 EP 2202411 A2 EP2202411 A2 EP 2202411A2 EP 09015231 A EP09015231 A EP 09015231A EP 09015231 A EP09015231 A EP 09015231A EP 2202411 A2 EP2202411 A2 EP 2202411A2
Authority
EP
European Patent Office
Prior art keywords
electrical
liquid
switch
request
pumps
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.)
Withdrawn
Application number
EP09015231A
Other languages
German (de)
English (en)
Other versions
EP2202411A3 (fr
Inventor
Horst Schreyer
Fred Brückmann
Oliver Fischer
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 AG
Original Assignee
KSB AG
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 AG filed Critical KSB AG
Publication of EP2202411A2 publication Critical patent/EP2202411A2/fr
Publication of EP2202411A3 publication Critical patent/EP2202411A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a control, regulating and / or monitoring device for a, in particular pump and / or valve actuators having, liquid-carrying system, wherein the device is connected to an electrical network, and a method for their operation.
  • the invention further relates to a system for conveying liquids with at least one driven by an electric motor centrifugal pump and at least one control, regulating and / or monitoring device.
  • Such devices find use in systems for fluid delivery with at least one driven by an electric motor centrifugal pump, wherein the device controls a conveying operation of the centrifugal pump, controls and / or monitored.
  • sewage lifting plants use electronic devices to turn on or off one or more pumps arranged in a liquid container depending on the height of a liquid level in the liquid container.
  • a pumping operation takes place only for a short time in order to convey away a quantity of liquid dependent on a filling volume of a liquid container.
  • Such sewage lifting systems and their control devices are, for example, by the DE 199 13 530 A1 or the DE 10 2007 008 692 A1 known.
  • Such a device has a considerable energy consumption as a result of its constant operational readiness.
  • a sewage pump powered by an electrical grid or other AC source is known with a float switch.
  • a charger supplies an accumulator, which provides the power supply to the pump in case of failure of the AC voltage source.
  • the pump is disconnected from the mains by an accessory and instead a control circuit is connected to the accumulator.
  • the control circuit tests whether the float switch is closed and in this case supplies the pump from the accumulator and via a power converter. When the float switch is open, the control circuit switches off the converter.
  • the control circuit ensures the electrical supply of the pump in case of power failure and allows an energy-saving use of such emergency power supply.
  • this solution is only suitable for simple applications in which a float switch connects or disconnects a pump directly to an electrical supply network.
  • the invention is based on the problem to provide a control, regulating and / or monitoring device of the type mentioned, which allows energy-saving operation of a liquid-carrying system.
  • a switching means embodied as a network separator switches the device as a function of a requirement of the system, in particular a conveyor request, and places it in an electrical rest state or in an electrically active state.
  • the invention is based on the recognition that a generic device is permanently electrically active under regular operating and plant conditions in most applications. In this case, it has a considerable energy consumption, which represents a multiple of energy, for example, in a domestic sewage lifting plant or a pumping station, as it is necessary for the actual pumping operation. This is not necessary in relation to the actual switching frequency or from the plant view.
  • the device is only placed in an electrically active state, if required by the system conditions.
  • a device according to the invention is predominantly operated in an electrical rest state when a pumping operation is not required due to the system. If, on the other hand, a change in a container filling occurs due to a liquid feed, the switching means switches the device to an electrical supply source and brings about the electrically active state. In this one or more pumps are turned on and off again by the device as needed. After completion of a plant-required control, regulation and / or monitoring task, the switching means separates the device from the electrical supply source. The device returns to the energy-saving electrical state of rest, whereby the energy consumption is significantly reduced.
  • one or more power supplies provide the device electrically.
  • This can be, for example Transformers or switching power supplies.
  • a control for a single or multiple pump system has a so-called control transformer for switching relays for on and / or off operations.
  • Such a control transformer will be provided simultaneously for the supply of the electronic part of the device.
  • the control transformer is designed for the required switching power for switching the devices connected to a device drives, such as pump motors, etc., and constantly requires a considerable energy consumption. This is substantially reduced by a demand-only switching of the control transformer to the electrical network.
  • multiple separate power supplies may be used to power different parts of the device.
  • a sufficiently high-power supply supplies a part of the device, which switches the relays for switching on and / or off in an electrically active state.
  • a smaller, low power adapter can power an electronic part of the device. This power supply is advantageous for supplying the device at rest or energy saving operation.
  • the switching means includes one or more separating elements and / or acts on them, whereby the device and / or one or more power supply units are separable from the mains supply.
  • the complete device and / or one or more power supplies can be disconnected from the mains supply.
  • circuit parts are placed in an electrical rest state or an energy-saving state.
  • parts of a device can be operated in an electrical rest state.
  • the device has means for maintaining a limited functionality during an electrical rest condition.
  • the functionality of a device in an electrical rest state remains partially preserved.
  • the device in an electrical rest state for example, continues to be able to take over the supply of connected sensors and their signal evaluation.
  • the device may control the switching means to restore the device to an electrically active state.
  • the device may include a functioning in an electrical state of rest of the device functioning to maintain a limited functionality.
  • the functionality of such an auxiliary device as part of the device remains wholly or partially in an electrical state of rest of the device.
  • the auxiliary device in an electrical state of rest of the device take over important functions such as system functions, the supply of connected sensors and their signal evaluation.
  • such an auxiliary device may control the switching means to restore the device to an electrically active state.
  • Such an auxiliary device may have an auxiliary processor which controls the switching means as a function of digital and / or analogue input signals, of predefined conditions and / or on the basis of other criteria.
  • an energy store can supply the device electrically.
  • a device can be completely or partially supplied with the energy storage.
  • an auxiliary device which functions in the electrical rest state of the device can be supplied by an energy store.
  • the energy store may be a rechargeable energy store. It has proven to be expedient if a charging part charges the energy store in an electrically active state of the device, wherein the charging part can be integrated in the device. The device is in the electrically active state, so it is connected to the electrical supply source and charging of the energy storage is possible. It is envisaged that the device will be charged monitored the energy storage and / or that the device is placed in an electrically active state, if necessary, to load the energy storage.
  • a separate power supply can provide the means for maintaining a limited functionality.
  • a smaller sized power supply is sufficient.
  • the device switches via the switching means an electrical device part, which requires a higher energy consumption, whenever possible from the network. This results in a lower energy consumption of a device according to the invention.
  • the switching means may be a means for detecting a request of the system.
  • the switching means may be a means for detecting a conveying requirement. The switching means itself is thus able to detect a system request and to put the device in an electrically active state or in an electrical rest state.
  • the device for a system for conveying liquids with a liquid container switches on or off one or more pumps, has connections for one or more sensors for detecting one or more liquid levels, in particular switch-on and switch-off levels, the pumps and / or the device turns one or more pumps on or off depending on the level of the fluid level in a fluid container.
  • the device is suitable for sewage lifting plants and pumping stations.
  • a requirement of the installation in particular a conveyor requirement, can be recorded in various ways.
  • systems for conveying liquids out of a liquid container in addition to the use of level sensors, for example, pressure monitoring or a method with air bubbling are possible.
  • a liquid level switch is advantageously used.
  • a liquid level switch for example, a float switch, is also able to put the device and / or a part of the device as a switching means in an electrical rest state or in an electrically active state.
  • Certain embodiments of such a switch can switch commonly used, electrical supply voltages directly. As a result, a device in the electrical rest state can be completely de-energized or disconnected from an electrical supply source.
  • the system for conveying liquids comprises a liquid container with one or more pumps and one or more sensors for detecting one or more liquid levels, in particular switch-on and switch-off levels, of the pumps, wherein the device has one or more pumps in dependence of the height of the liquid level in the container turns on or off.
  • the means for detecting a funding requirement may be a liquid level switch.
  • the device In a method for operating a control, regulating and / or monitoring device for a, in particular pump and / or valve actuators having, liquid-carrying system, wherein the device is connected to an electrical network, the device is a function of a request of the system , in particular a funding request, by a designed as a power disconnect switching means switched and placed in an electrical state of rest or in an electrically active state.
  • the device can be powered by one or more power supplies.
  • the device and / or one or more power supplies are separated by one or more disconnecting elements from the mains supply or an electrical supply source.
  • the device is supplied by several power supplies.
  • a means for maintaining a limited functionality of the device can be supplied by a separate power supply.
  • a request of the system, in particular a conveyor requirement is detected by the switching means.
  • the method is useful in a device which turns on or off one or more pumps for a fluid delivery system with a fluid container and has ports for one or more sensors for detecting one or more fluid levels, in particular turn-on and turn-off levels, of the pumps and / or one or more pumps depending on the height of the liquid level in a liquid container on or off.
  • a request of the system is suitably detected by a liquid level switch.
  • the FIG. 1 shows a schematic representation of a control, regulation and / or monitoring device 1 for a liquid-carrying system 2, here a sewage lifting system, with a liquid container 3, in which a provided with a drive 4, an electric motor, centrifugal pump 5 is arranged for conveying liquid.
  • the device 1 is suitable to control the centrifugal pump 5 with drive 4 as a function of a liquid level 6 in the liquid container 3.
  • the device or control device 1 has a connection 7 for a sensor for detecting a liquid level, in this case a float switch 8, for detecting switch-on and switch-off levels of the centrifugal pump 5.
  • the device 1 switches in dependence on a height of the liquid level 6 in the liquid container 3, the pump 5 on or off.
  • the device 1 has a power supply 9, which is connected via a line 10 to an electrical network or an electrical supply source 11.
  • the power supply or the control transformer 9 is suitable in addition to a supply of an electronic part of the control device 1 for switching relays or contactors for switching on and / or off the pump 5.
  • the control transformer 9 is therefore designed for the required switching power for switching the device 4 connected to the drive 4 and the power requirement of the electronic circuit part of the device. Therefore, it has a considerable energy consumption over its useful life.
  • the device 1 can be separated from the mains supply 11 by a separating element 12 arranged between the electrical network 11 and the control transformer 9. As a result, the device 1 can be put into an electrical rest state. This happens depending on a requirement of the system.
  • the liquid level switch or float switch 8 To detect a request of the system is used in the illustrated embodiment, the liquid level switch or float switch 8.
  • the float meets his in a sewage lifting plant usual function as a switch which detects a certain liquid level and whose signal is used by the control device 1 for switching on or off the pump 5.
  • the float switch 8 includes and / or acts on the separating element 12 and thus simultaneously serves as switching means which separates the device 1 from the network 11.
  • the float switch 8 drops corresponding to the liquid level 6 and thus separates the device 1 from the network 11 via the separating element 12.
  • the device 1 becomes complete in this case disconnected from the network 11.
  • the power pack 9 consumes no electrical energy, resulting in the desired energy savings.
  • the control device 1 has an energy store 13 in the form of a battery, whereby the electronic part of the control is safeguarded in order to obtain all adjustment parameters and system functions during an electrical rest state of the device 1.
  • the float switch 8 When liquid in the container 3 and an associated funding requirement of the system also increases the float switch 8 and turns on. About the separator 12, the device 1 is switched back to the network 11 and the device 1 can control a switching on and off of the pump 5. After a certain time, the container liquid level 3 drops again and the device 1 is put back into the electrical rest state.
  • the FIG. 2 shows a further device 1 according to the invention, which is used for example as a controller for a multi-pump arrangement in a pumping station.
  • the device 1 has a plurality of connections 18 for controlling pumps and a plurality of connections 19 for digital or analog input and output variables of the device 1.
  • the device 1 is connected to an electrical network 11 and is supplied by this electrically.
  • the device 1 consists of a main device 21 and an auxiliary device 22.
  • the main device 21 includes a power supply unit 9, for example a transformer, which is connected via the line 10 and a separating element 12 to the electrical network 11.
  • the main device or main controller 21 includes all that is required for controlling the multi-pumping arrangement Components, ie electrical circuits for switching on and off the pumps and an electronic control unit for processing a variety of control functions.
  • the auxiliary device 22 serves to maintain a limited functionality during an electrical rest state of the device 1.
  • the device 1 consists in this embodiment of a main device 21 and an auxiliary device 22. Equally well, the device 1 may be constructed differently and / or be equipped with other means for maintaining a functionality during an electrical rest state.
  • a switching means 28 is integrated, which includes a separator 12 and / or acts on this circuitry.
  • the device 1 or the power supply unit 9 can be separated from the mains supply 11.
  • the main device 21 is disconnected from the network 11.
  • the auxiliary device 22 is powered by a trained as an accumulator energy storage 13.
  • the device 1 remains in the idle state by the auxiliary device 22 at least partially functional.
  • the energy storage device 13 is charged by a charging part 24 integrated in the device 1 when the device 1 is in an electrically active state.
  • the main device and auxiliary device can be supplied by separate power supply units. In an electrical state of rest of the device then the main device is disconnected from the network and the auxiliary device is powered by a separate, smaller-sized power supply.
  • auxiliary device 22 By an electrical supply of the auxiliary device 22 in the electrical rest state ensures that all adjustment parameters and required functions of the located in an electrical rest state device 1 or the main device 21 are maintained.
  • the functionality of the auxiliary device 22 as part of the device 1 remains wholly or partially preserved in the electrical state of rest of the device 1.
  • the auxiliary device 22 in an electrical state of rest of the device 1 important functions, such as system functions, the supply of connected sensors and their signal analysis take over.
  • An important function of the auxiliary device 22 is that it controls the switching means 28 to the Main device 21 to put back into an electrically active state.
  • the auxiliary device 22 may include an auxiliary processor that controls the switching means 28 in response to digital and / or analog input signals from sensors or devices connected to the terminals 19.
  • the auxiliary device 22 may control the switching means 28 based on previously defined conditions and / or on other criteria.
  • the reclosing conditions can be predetermined by the main device 21 to the auxiliary device 22.
  • control, regulation and / or monitoring devices listed.
  • comparable devices such as devices for measured value acquisition and / or transmission or diagnostic devices nevertheless use the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Conveyors (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP09015231A 2008-12-23 2009-12-09 Dispositif et procédé pour une installation transportant du liquide Withdrawn EP2202411A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008063019A DE102008063019A1 (de) 2008-12-23 2008-12-23 Einrichtung und Verfahren für eine flüssigkeitsführende Anlage

Publications (2)

Publication Number Publication Date
EP2202411A2 true EP2202411A2 (fr) 2010-06-30
EP2202411A3 EP2202411A3 (fr) 2010-08-04

Family

ID=41460468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015231A Withdrawn EP2202411A3 (fr) 2008-12-23 2009-12-09 Dispositif et procédé pour une installation transportant du liquide

Country Status (2)

Country Link
EP (1) EP2202411A3 (fr)
DE (1) DE102008063019A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022010A1 (fr) * 2013-08-12 2015-02-19 Alfred Kärcher Gmbh & Co. Kg Système de pompage de liquide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0840014A1 (fr) 1996-10-31 1998-05-06 Ksb S.A. Installation de pompage à circuit permettant de ménager une source d'énergie de secours
US6039067A (en) 1998-10-16 2000-03-21 Houlihan; John A. Selectable control energy and water conservation system
DE19913530A1 (de) 1999-03-25 2000-09-28 Ksb Ag Niveauabhängige Steuerung von Pumpen
DE102007008692A1 (de) 2007-02-20 2008-08-21 Ksb Aktiengesellschaft Niveauabhängige Steuerung von Pumpen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US792734A (en) * 1905-01-03 1905-06-20 Herman A Schultz Automatic electric switch.
US6341944B1 (en) * 1999-06-15 2002-01-29 General Electric Company Motor start and float switch assembly
US6904926B2 (en) * 2002-07-10 2005-06-14 Southwest Water Resources, L.L.C. Systems and methods for collecting and distributing gray water
US20060275136A1 (en) * 2005-02-09 2006-12-07 Simple Liu Activation device for sump pumps

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0840014A1 (fr) 1996-10-31 1998-05-06 Ksb S.A. Installation de pompage à circuit permettant de ménager une source d'énergie de secours
US6039067A (en) 1998-10-16 2000-03-21 Houlihan; John A. Selectable control energy and water conservation system
DE19913530A1 (de) 1999-03-25 2000-09-28 Ksb Ag Niveauabhängige Steuerung von Pumpen
DE102007008692A1 (de) 2007-02-20 2008-08-21 Ksb Aktiengesellschaft Niveauabhängige Steuerung von Pumpen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022010A1 (fr) * 2013-08-12 2015-02-19 Alfred Kärcher Gmbh & Co. Kg Système de pompage de liquide

Also Published As

Publication number Publication date
EP2202411A3 (fr) 2010-08-04
DE102008063019A1 (de) 2010-07-01

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