EP2483564A1 - Kreiselpumpenaggregat mit schaltvorrichtung - Google Patents
Kreiselpumpenaggregat mit schaltvorrichtungInfo
- Publication number
- EP2483564A1 EP2483564A1 EP10760992A EP10760992A EP2483564A1 EP 2483564 A1 EP2483564 A1 EP 2483564A1 EP 10760992 A EP10760992 A EP 10760992A EP 10760992 A EP10760992 A EP 10760992A EP 2483564 A1 EP2483564 A1 EP 2483564A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching device
- connection
- drive motor
- voltage network
- microcomputer
- 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.)
- Granted
Links
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
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
-
- 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
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- 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
Definitions
- the invention relates to a arranged on a centrifugal pump assembly switching device, wherein the switching device with at least one controlled by a microcomputer switching means switches a drive motor and is provided with a connection for a first voltage network and a connection for a second voltage network, wherein the microcomputer integrated into the switching device is, the switching device is provided with at least one signal input and the microcomputer is connected to the signal input, wherein the switching device the current flow for a arranged on the switching device drive motor port and / or the drive motor such that the drive motor connection and / or the drive motor with the connection for the first voltage network and / or with the connection for the second voltage network is connectable.
- the invention further relates to a centrifugal pump assembly with such a switching device and a method for operating a centrifugal pump assembly.
- WO 2007/1 18706 A1 discloses a switching device arranged on a centrifugal pump assembly and an arrangement of parallel-operated centrifugal pump assemblies with a plurality of such switching devices. Such arrangements of centrifugal pump units can be found in a variety of piping systems in which a certain discharge pressure is to be maintained.
- the microcomputer is integrated into the switching device, the switching device provided with at least one signal input and terminals for at least one serial bus system, the microcomputer connected to the signal input and the terminals of the bus system and in the drive motor and / or the switching device means for passing signals are present.
- the switching device is provided with a connection for a second voltage network, and the switching means switches the current flow for a drive motor connection arranged on the switching device and / or the drive motor such that the drive motor connection and / or the drive motor are connected to the connection for the first voltage network and / or or connectable to the connection for the second voltage network.
- the use of the switching device described in WO 2007/1 18706 A1 in a multiple pump arrangement, for example a double pump arrangement in which each pump is to be operated optionally with a first voltage or with a second voltage requires a switching device per centrifugal pump unit. For some, in practice encountered common standard configurations, such as a double pump arrangement, this seems too complex.
- the invention is based on the problem of developing a cost-effective switching device for a centrifugal pump assembly, which allows for certain multi-pump arrangements, especially in a double pump arrangement, a speed-stable or variable speed operation of the centrifugal pump units with low wiring costs and supports a fail-safe operation of the centrifugal pump assembly.
- the switching device has at least one further connection for a further drive motor and at least one additional switching means which switches the current flow for the further drive motor connection and / or for the at least one further drive motor such that the further drive motor connection and / or or the further drive motor can be connected to the connection for the first voltage network and / or to the connection for the second voltage network.
- the drive motor connections and / or the drive motors can be individually connected to one of the voltage networks, depending on the system requirements.
- the switching device can be mounted on a drive motor and / or a centrifugal pump of a centrifugal pump assembly. According to the invention, a switching device can not only drive the drive motor to which the switching device is attached.
- centrifugal pump assembly switching device is net, switch between two voltage networks, but a switch can also be made for other connectable to the switching device drive motors.
- a mounted on a centrifugal pump assembly switching device is thus able to control a complete multi-pump assembly. Since the switching device is provided with a connection for a second voltage network, the centrifugal pump units of a centrifugal pump arrangement provided with such a switching device can be connected to different voltage networks.
- the arrangement of the switching device to the drive motor saves cabinet space and through the integrated microcomputer, the dependence on a central, higher-level control is prevented. This improves the reliability of such a centrifugal pump assembly.
- the switching device has means for conducting the first voltage network and a connection for the electrical supply of a device for generating the second voltage network.
- an electrical supply of an external device, which serves to generate the second voltage network provided directly from the switching device.
- a frequency converter connected to the switching device can be supplied electrically directly from the switching device.
- a separately available supply branch for the device for generating the second voltage network is eliminated. It suffices a mains supply to the switching device.
- the switching means switches the drive motor between different voltage networks or between voltage networks with fixed and variable frequency.
- the function of the centrifugal pump units is ensured even in the event of a power grid failure. It has proven to be advantageous to connect the connection of the switching device for a second voltage network with a frequency converter, wherein the frequency converter via the connection for the electrical supply of the device for generating the second voltage is electrically supplied with two switching means to switch a drive motor between the voltage networks and to connect the microcomputer, preferably by means of one or more control lines or a bus system to the frequency converter.
- a switching means which may also act like a toggle switch, only an immediate switching is possible.
- a connection or disconnection request for a centrifugal pump assembly or a switching request between different voltage networks can be transmitted via a signal line or a bus system from a frequency converter to the switching device of the centrifugal pump arrangement. This allows the construction of a multi-pump arrangement with temporary assignment of the frequency converter voltage to individual drive motors, which are thereby speed-controlled switched on or off, at the same time short connection line lengths.
- An embodiment provided for a double pump arrangement in particular a twin pump arrangement, provides that two drive motors are connected to the switching device and four switching means switch the drive motors between the voltage networks. To a switching device thereby two drive motors can be connected. Depending on the system requirements, the drive motors can be individually connected to the fixed frequency voltage or to the frequency converter voltage. In a corresponding manner switching devices for further multi-pump arrangements are provided according to the invention.
- the switching device has means for detecting and / or storing motor current, motor voltage and / or power factor. tor Liebe. By recording and / or monitoring performance data, additional engine monitoring is possible.
- the switching device comprises means for monitoring and / or diagnostic functions. This means that different pump and / or drive-related variables can be recorded, determined and monitored. In particular, a monitoring of the voltage amplitudes of the frequency converter voltage is provided, whereby a malfunction of the frequency converter is detected. The purpose of this is provided in the switching device provided pulse width modulation monitoring module. Its signal indicates the absence of one or more voltage phases and is evaluated by the microcomputer, whereby additional motor protection is achieved.
- the switching device can have operating / input means and / or display / output means. Examples of operating / input means are input keys, dip switches, signal inputs, as examples of display / output means display, color LED multi's, called signal and relay outputs.
- a synchronization unit determines the respective phase and frequency positions between two fixed and / or variable frequency voltage networks, and if the phase and frequency positions are equal, a synchronization signal flows to a microcomputer and switches over a centrifugal pump unit. This allows a switch from one voltage network to another voltage network, whereby the formation of undesired pressure surges or pulsations in the pipeline system is avoided.
- the switching device may comprise means for controlling a frequency converter.
- a switching device control start, stop and / or the frequency of a frequency converter.
- a centrifugal pump arrangement is equipped with at least two centrifugal pump units, each consisting of pump and motor, with a switching device according to the invention.
- the switching device is connected to the drive motors, special about each located on a drive motor terminal box, electrically connected.
- the switching device is arranged on one of the drive motors.
- the motor-mounted switching device can be attached by means of a holding device to the drive motor.
- the switching device is formed as part of one of the drive motors.
- One embodiment relates to a centrifugal pump arrangement with a frequency converter connected to the switching device, in particular arranged on the switching device and / or on a drive motor.
- a double pump arrangement with two centrifugal pump units with a switching device to which two drive motors are connected and four switching means to switch the drive motors between the voltage networks, wherein the switching device on one of the two drive motors and the frequency converter to the switching device and / or the other of the two drive motors is arranged.
- a special double pump arrangement is in particular a twin pump arrangement, in which the pumps have a common pump housing with a common suction and / or discharge nozzle, in the context of the invention.
- centrifugal pump arrangements with each other and / or with other centrifugal pump arrangements.
- a plurality of switching devices can be used, each of which switches at least two centrifugal pump units to the voltage networks.
- a combination with centrifugal pump units which are equipped with another switching device that switches one or more centrifugal pump units, is provided.
- a combination is provided with centrifugal pump units which are equipped with a switching device according to WO 2007/1 18706 A1, which can perform switching operations for each one centrifugal pump unit, are equipped.
- These single pump switching devices are each capable of switching the fixed frequency voltage network or the variable frequency voltage network to the drive motors to which they are arranged.
- a bus system connects the switching devices in an advantageous manner, whereby the microcomputer are in operative connection with each other.
- one of the switching devices is configured as a priority switching device.
- the centrifugal pump units can be arranged in a flexible manner to a multi-pump system, such as to a pressure booster, in which the pumps - controlled by the priority switching device - if necessary, switched on or off.
- a multi-pump system such as to a pressure booster
- the double pump switching device can be designed as a priority switching device and control the other switching devices.
- An advantageous method for operating a centrifugal pump arrangement provides that the microcomputer evaluates one or more input signals and controls the connection or disconnection of the centrifugal pump units.
- the microcomputer of the switching device can control the activation and deactivation of the centrifugal pump units.
- the microcomputer can also control the change from a voltage network connected to a drive motor to another voltage network.
- the drive motor connections and / or the drive motors are individually connected to one of the voltage networks depending on the system requirements.
- the microcomputer with signals of a device for generating the second voltage network controls the operation of one or more centrifugal pump units. This can be, for example, a request signal for another centrifugal pump unit, a signal or an alarm signal.
- the microcomputer controls a device for generating the second voltage network, in particular a frequency converter. It is envisaged that the microcomputer controls the device for generating the second voltage network or the frequency converter with a start or stop signal.
- the switching device performs pump and / or drive-relevant monitoring and / or diagnostic functions.
- the microcomputer is capable of acquiring, processing and storing measured values.
- centrifugal pump assembly As a basis for monitoring and / or diagnosing a centrifugal pump assembly histograms are provided with cumulative over the life of a centrifugal pump unit performance and / or flow values. As a result of the invention, relevant data of several centrifugal pump units are available at any time and directly at a centrifugal pump arrangement.
- An advantageous method provides that the output voltage of the device for generating the second voltage, in particular the frequency converter, is monitored.
- a pulse width modulation monitoring is performed.
- the microcomputer evaluates a result of this monitoring, which is present, for example, in the form of a binary pulse width modulation signal, and takes it into account when controlling the switching means. This avoids, for example, that a drive motor is operated with a frequency converter voltage with a missing phase.
- one of the switching devices may be configured as a priority switching device.
- the microcomputer of a switching device can control the connection and disconnection of further centrifugal pump units and / or request their connection or disconnection via the bus system.
- the microcomputer preferably uses a synchronization signal to switch the drive motors between different voltage networks at the same phase and frequency positions of the voltage networks. Switchover-related voltage differences, current peaks and resulting pressure surges in the pipeline system are thereby prevented. A switchover of the drive motors to another voltage network can take place in such a way that in the switching device the voltage network connected to a drive motor is disconnected only after the other voltage supply has been connected.
- FIG. 1 shows a double pump arrangement with two centrifugal pump units, one
- Fig. 2 is a double pump arrangement with an alternative arrangement of
- Fig. 3 is a schematic diagram of a switching device
- Fig. 4 shows the circuit construction of a switching device.
- 1 shows a double pump arrangement 1 with two centrifugal pump units 2, 3 consisting of centrifugal pumps 4, 5 and drive motors 6, 7.
- the drive motors 6, 7 are equipped with terminal boxes 8, 9.
- On the drive motor 6, a switching device 10 is arranged or attached.
- the switching device 10 has a connection 12 for a first voltage network and a connection 13 for a second voltage network.
- the terminals 12 and 13 are designed for the connection of multi-phase voltage networks, in particular three-phase voltage networks, multipole, in particular three-pole.
- Correspondingly designed lines 14 and 15 are connected to the connections 12 and 13 for connection to the voltage networks.
- the switching device 10 has a microcomputer and switching means which switch such that the drive motor 6 can be connected to the connection 12 for the first voltage network and / or to the connection 13 for the second voltage network.
- the switching device 10 has for this purpose a connection 16. Via a line 17 connected thereto and to the terminal box 8, the switching device 10 is electrically connected to the drive motor 6.
- the switching device 10 has a further connection 18 for a further drive motor 7, which is connected by means of a connected to the terminal box 9 line 19 with the switching device 10.
- additional switching means this is able to switch the current flow for the further drive motor 7 such that the further drive motor 7 to the terminal 12 for the first voltage network and / or to the terminal 13 for the second voltage network is connectable.
- a frequency converter 20 is arranged or attached.
- the frequency converter 20 is electrically supplied from the switching device 10.
- the frequency converter 20 generates a second voltage network with a variable frequency.
- the output voltage of the frequency converter 20 is guided by means of a terminal 24 and a line 15 to the terminal 13 of the switching device 10.
- the switching device 10 receives a switching signal or else a continuous input signal via a signal input, which is not illustrated here, at the switching device 10. whereby the microcomputer integrated in the switching device 10 receives a switching request of a system.
- This may be, for example, a pressure switch which signals an overshoot or undershoot of a specific pressure value of a pressure booster system.
- the signal input is suitable both for a switching signal and for a continuous input signal. This is realized by a corresponding input circuit within the switching device 10.
- the input assignment can be parameterized by an operating means and / or can be selected by dip-switches.
- the switching device 10 has further signal inputs and / or outputs, for example for communication with the frequency converter 20th
- FIG. 2 shows a double pump arrangement 1 with the centrifugal pump units 2, 3 of FIG. 1 with the pumps 4, 5 and the drive motors 6, 7.
- the drive motors 6, 7 are connected to the terminal boxes 8 and 9, respectively and the terminals 16 and 18 connected lines 17 and 19 connected to the arranged on the drive motor 6 switching device 10 is connected.
- the switching device 10 in turn has a terminal 12 for a first, multi-phase voltage network and a terminal 13 for a second, multi-phase voltage network.
- Correspondingly designed lines 14 and 15 are connected to the connections 12 and 13 for connection to the voltage networks.
- the frequency converter 20 is arranged on the drive motor 7.
- the output voltage of the frequency converter 20 is guided by means of connection 24 to the frequency converter 20 and the line 15 to the terminal 13 of the switching device 10.
- the frequency converter 20 is electrically supplied by means of line 23, which is connected to terminal 21 of the switching device 10 and to terminal 22 of the frequency converter 20.
- FIGS. 1 and 2 are also used in a twin-pump arrangement in which two centrifugal pumps share a common pump. pen housing having a common suction and / or discharge nozzle.
- the switching device 10 is arranged, fastened or mounted on one of the drive motors. According to the invention, the switching device can also be formed as part of one of the drive motors. It is understood that according to the invention, instead of a frequency converter, another speed control device or another device for generating a second voltage network, such as a network backup system, can be used.
- FIG. 3 shows a schematic circuit diagram of a switching device 10. For reasons of clarity, multiphase lines are bundled therein and shown as a line. In a corresponding manner multipole switching means are shown simplified. Via terminal 12, the switching device 10 is connected to a polyphase, here three-phase voltage network fixed frequency. At the switching device 10, two drive motors 6 and 7 are connected to terminals 16 and 18. Via terminals 13 and 21, the switching device 10 is connected to a frequency converter 20 having terminals 22 and 24. In each case two located in the switching device 10 and separately switchable switching means 31, 33 and 32, 34 switch the current flow to the drive motors 6 and 7 such that either the voltage of the first voltage network or the voltage of the frequency converter 20 to the drive motor 6 and 7 is present.
- the switching means 31 and 33 are the drive motor 6, the switching means 32 and 34 associated with the drive motor 7. Instead of the four switchable switching means 31, 32, 33, 34 per drive motor 6, 7 and a switching means in the manner of a changeover switch can be used.
- the switching means 31 connects in its closed state via a line 35 the connection 12 for the voltage network fixed frequency with the drive motor terminal 16 and thus leads the fixed frequency voltage to the drive motor 6.
- the switching means 33 connects in the closed state via a line 37th the connection 13 for the second voltage network with the drive motor terminal 16. In this way, the voltage of variable frequency, ie the output voltage of the frequency converter 20, with the drive motor 6 connectable bar.
- the drive motor 6 is selectively connectable to one of the two voltages.
- the switching means 32 in the closed state connects, via a line 36, the terminal 12 for the voltage network of fixed frequency to the second
- the output voltage of the frequency converter 20 is guided via the switching means 34 to the further drive motor 7 by the closed switching means 34, the terminal 13 via the line 38 to the terminal 18 Ver. binds.
- the drive motor 7 is selectively connectable to one of the two voltages.
- switching means 31 32 mechanical contactors or semiconductor contactors can be used. However, other components and combinations thereof used in motor branches are also possible, including arrangements with motor-protective circuit-breakers, overload relays and / or contactor combinations for star-delta starting or soft-starters.
- switching means 33, 34 are preferably mechanical contactors are used.
- the switching means 31, 32, 33, 34 are controlled by a microcomputer integrated in the switching device 10. This is done by means indicated by arrows control lines.
- Each of the drive motors 6, 7 is thus, if necessary, connectable to the voltage network of fixed frequency or to the voltage network of variable frequency.
- the switching device 10 has means for passing the fixed frequency voltage. Via a line 39, this voltage is fed to the terminal 21.
- the terminal 21 is used for the electrical supply of the frequency converter 20 from the switching device 10 out. This saves a separate supply line, otherwise available on the installation side. 4 shows a somewhat more detailed circuit design of a switching device 10. For reasons of clarity, the multiphase lines are bundled here and simplified, the switching means.
- the switching device 10 has a microcomputer 40.
- the microcomputer 40 is electrically powered by a power supply.
- a signal input 46 is connected to the microcomputer 40.
- the signal input 46 serves to connect a means for signaling a switching request.
- a pressure switch may be connected, which is a switching signal at undershooting or exceeding a certain pressure value its installation location, for example in a pressure booster, supplies.
- the four switching means 31, 32, 33, 34 are connected to the microcomputer and are controlled by this.
- a switching request such as a pump start request, is transmitted to the microcomputer 40.
- the microcomputer 40 of the switching device 10 controls the connection and disconnection of the drive motors 6 and 7 of the centrifugal pump units by connecting the drive motors 6 and 7 with the voltage networks or separates them.
- the microcomputer 40 may also control the change from a voltage network connected to a drive motor to another voltage network.
- the microcomputer 40 drives the frequency converter 20 by means of a communication line 47.
- the switching device 10 is thus able to control the frequency converter 20 by means of a start or stop command. Via the communication line 47, a ready and / or alarm signal is fed from the frequency converter 20 to the microcomputer 40.
- the frequency converter 20 can request the connection of a further centrifugal pump unit in the microcomputer 40 as a function of system conditions.
- the switching device has a connection 50 for connecting the communication line 47.
- the communication line 47 may be a plurality of control lines or a bus system.
- the switching device 10 contains a means 51 for detecting the output voltage of the frequency converter 20.
- the means 51 may be a pulse width modulation detector which constantly monitors the amplitudes of the three voltage phases and the microcomputer 40 a binary signal corresponding to a good or Error condition, provides. With the pulse width modulation detector 51, for example, a phase failure at the output 13 of the frequency converter 20 can be detected.
- the switching device 10 has a display and control unit 53, which is connected to the microcomputer 40.
- the display and control unit 53 10 different engine operating modes of the drive motors 6 and 7 are adjustable to the switching device.
- the display and operating unit 53 has for this per drive motor 6, 7 an input Stem on.
- the set engine operating modes are converted by the microcomputer 40 by controlling the switching means 31, 32, 33, 34 in corresponding switching operations.
- display devices per drive motor are used as LEDs.
- Three different colors and / or flashing frequencies of the display means indicate the various operating states of the drive motors 6 and 7, such as "motor off", "motor on frequency converter", or "motor on mains".
- switching delay times and / or different pump change modes can be selected, and the choice of operating mode can also be set in the microcomputer 40 by means of corresponding program parameters.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009043556A DE102009043556B3 (de) | 2009-09-30 | 2009-09-30 | Kreiselpumpenaggregat mit Schaltvorrichtung |
PCT/EP2010/064337 WO2011039166A1 (de) | 2009-09-30 | 2010-09-28 | Kreiselpumpenaggregat mit schaltvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2483564A1 true EP2483564A1 (de) | 2012-08-08 |
EP2483564B1 EP2483564B1 (de) | 2016-11-16 |
Family
ID=43123174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10760992.7A Not-in-force EP2483564B1 (de) | 2009-09-30 | 2010-09-28 | Kreiselpumpenaggregat mit schaltvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2483564B1 (de) |
BR (1) | BR112012006426A8 (de) |
DE (1) | DE102009043556B3 (de) |
WO (1) | WO2011039166A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6581806B2 (ja) * | 2015-05-18 | 2019-09-25 | 株式会社川本製作所 | ポンプユニット、給水装置 |
DE102016119207B4 (de) * | 2016-10-10 | 2020-03-12 | Nolta Gmbh | Pumpensteuerungseinrichtung, Pumpeinrichtung, Abwasseraufbereitungsanlage und ein Verfahren zum Betrieb von wenigstens zwei Pumpen |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2756916C2 (de) * | 1977-12-21 | 1985-09-26 | Danfoss A/S, Nordborg | Vorrichtung zur Einrichtung der Fördermenge einer Wasserwerk-Pumpenanordnung |
US5522707A (en) * | 1994-11-16 | 1996-06-04 | Metropolitan Industries, Inc. | Variable frequency drive system for fluid delivery system |
DE19511170A1 (de) * | 1995-03-28 | 1996-10-02 | Wilo Gmbh | Doppelpumpe mit übergeordneter Steuerung |
DE19742799B4 (de) * | 1997-09-27 | 2006-10-05 | Ksb Ag | Automatische Anpassung des Stellbereiches eines Druckregelkreises in Mehrpumpenanlagen |
DE10331578B4 (de) * | 2003-07-11 | 2006-01-12 | Spechtenhauser Pumpen Gmbh | Abwasserpumpensystem mit mehreren Kanalradpumpenaggregaten |
US7514815B2 (en) * | 2004-09-28 | 2009-04-07 | American Power Conversion Corporation | System and method for allocating power to loads |
JP4431519B2 (ja) * | 2005-04-11 | 2010-03-17 | 日立Geニュークリア・エナジー株式会社 | 原子炉冷却材の再循環ポンプ電源装置 |
DE102006018025A1 (de) * | 2006-04-19 | 2007-10-25 | Ksb Aktiengesellschaft | Kreiselpumpenaggregat mit Schaltvorrichtung |
-
2009
- 2009-09-30 DE DE102009043556A patent/DE102009043556B3/de active Active
-
2010
- 2010-09-28 BR BR112012006426A patent/BR112012006426A8/pt not_active Application Discontinuation
- 2010-09-28 EP EP10760992.7A patent/EP2483564B1/de not_active Not-in-force
- 2010-09-28 WO PCT/EP2010/064337 patent/WO2011039166A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011039166A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011039166A1 (de) | 2011-04-07 |
BR112012006426A8 (pt) | 2018-07-31 |
DE102009043556B3 (de) | 2010-12-23 |
EP2483564B1 (de) | 2016-11-16 |
BR112012006426A2 (pt) | 2016-04-19 |
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Legal Events
Date | Code | Title | Description |
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