EP1963680A1 - Appareil de regulation de la vitesse de rotation avec refroidissement par fluide - Google Patents

Appareil de regulation de la vitesse de rotation avec refroidissement par fluide

Info

Publication number
EP1963680A1
EP1963680A1 EP06829680A EP06829680A EP1963680A1 EP 1963680 A1 EP1963680 A1 EP 1963680A1 EP 06829680 A EP06829680 A EP 06829680A EP 06829680 A EP06829680 A EP 06829680A EP 1963680 A1 EP1963680 A1 EP 1963680A1
Authority
EP
European Patent Office
Prior art keywords
control device
speed control
pipe section
flow
speed
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Withdrawn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
EP06829680A
Other languages
German (de)
English (en)
Inventor
Marjan Silovic
Horst RÖDDIGER
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 EP1963680A1 publication Critical patent/EP1963680A1/fr
Withdrawn legal-status Critical Current

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
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0686—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit

Definitions

  • the invention relates to a speed control device in fluid-cooled design for connection to a drive motor, in particular a motor of a pump unit for conveying fluids, wherein the speed control device encloses a conveying fluid leading line.
  • speed control devices for speed control of pump units, in particular of centrifugal pump units, speed control devices of various types, such as frequency and voltage regulator known. These are electrically connected to the drive motor of a centrifugal pump.
  • a pump unit for conveying liquids or gases whose speed is variable by a special voltage regulator, is arranged in or on the unit and forms a structural unit with this.
  • the voltage regulator is miniaturized and cooled by direct contact with the fluid. If the voltage regulator is arranged in the pump unit, then its surface is at least partially to be arranged in the flow path of the pumped fluid.
  • the complex miniaturization is due to the limited space of the motor or the pump.
  • the design of the voltage regulator must be subordinate to the given space and therefore excludes the use of standard components. Furthermore, the location of the voltage regulator is linked to the place of use of the pump.
  • the voltage regulator is cooled by the surrounding fluid.
  • a delivery line is closed by the miniaturized voltage regulator. ben, whereby a further special construction is required.
  • This solution causes the additional disadvantage that a corresponding overlap of the voltage regulator by the fluid must be present, which is not always guaranteed.
  • Hydrovar Watercooled from ITT Industries, INC. known.
  • the Hydrovar Watercooled special housing has several parallel piping connections on the underside and a pipe connection arranged at right angles, which is connected to the delivery line of a system as required. This has the disadvantage of additional flow deflection and a very poor flow coefficient, which severely worsens the overall efficiency of the system.
  • the invention is based on the problem of providing a pump-cooled speed control device for pumps for arrangement at any point within flow-guiding systems.
  • the solution provides that the speed control device is attached to a pipe leading into the conveying fluid while maintaining a predetermined flow path pipe section by means of a one- or multi-part mounting bridge with heat transfer to the conveying fluid.
  • the speed control device is thus easy and trouble-free integrated into the flow-leading system.
  • This offers the advantage that the dimensional dimensions and structural designs of the flow-guiding components are determined solely by fluidic requirements of the system and / or by system requirements.
  • the speed control device is attached to a piece of pipe, for example a FF piece with standardized flange dimensions, which is installed in a conventional system design. Plant-planned and predetermined flow paths are thus maintained and do not have to be modified due to specified installation conditions of the speed control device. This makes it easier, even retrofitting the speed controller in systems possible.
  • the pipe section can be easily adapted to the respective conditions of use and has no influence on the design of the speed control device. This offers the advantage of being able to use already existing devices of an existing product range, such as frequency converters, which are designed for a wall-mountable and motor-mountable arrangement.
  • the speed controller is independent of the plant conditions in its design.
  • the speed control device, the pipe section and the mounting bridge are designed as a mounting unit.
  • a plant engineer only has to establish the connections of the speed control unit with the mains supply and with the motor.
  • the speed control device can be arranged at any point within a flow-leading system. It can be arranged on a straight pipe section, a diffuser piece, a manifold piece or another piece of equipment.
  • the location of the speed control device is thus flexible and independent of the location of the pump.
  • the pipe section may be located near the pump, but not necessarily.
  • the choice of the installation location may depend on other criteria. If in a system the opportunity of installing a speed control device through a piece of pipe proves favorable only at certain points, this can be done in a simple manner at this point.
  • Such pieces of pipe of different shapes have standardized dimensions.
  • the installation lengths of the pipe sections correspond approximately to one of the outer dimensions of the speed control device or are made smaller. This length can be selected depending on the installation position of the speed control unit. This achieves a flexible and space-saving construction of flow paths.
  • the pipe section consists of materials resistant to the conveying fluid and / or has coatings.
  • Another embodiment provides that sensors for detecting pressure values, temperature values, flow values, speed values and / or vibration values are connected to the speed control device and these are fastened to the pipe section and / or the mounting bridge.
  • the sensors generate measured values that are used in algorithms of the speed control device in order to shape its control behavior and / or perform diagnostic functions. For example, it is possible to increase the flow rate based on the measured flow velocity values regulate.
  • the pipe section is simply installed at the desired measuring point.
  • Additional embodiments of the invention provide that in the interior of the pipe section of the cross-section changing contours or internals are included. Furthermore, the interior of the pipe section may have a suitable influencing of the flow profile for a flow determination according to the differential pressure method.
  • An advantageous embodiment of the pipe section as a diffuser piece.
  • Such diffuser pieces are provided in the centrifugal pump technology at the discharge nozzle of the pump, in order to slow down their high-speed on the pressure side for subsequent system components and thereby reduce the pipe losses of a system. In their replacement by the pipe section, this has on the inside a suitable flow determination by the differential pressure design of the flow path. An additional influence on the flow path within a system is not given.
  • the pipe section may be formed as a Venturi tube or a V-cone flowmeter.
  • Such a pipe section with its sensors completely replaces a flow meter that is often additionally required in fluidic systems.
  • the flow can be determined by means of two pressure sensors and a tube suitable as a flowmeter.
  • important system parameters are available, which serve as the basis of the control response of the speed control unit. Particularly advantageous are in In this context, the short signal paths between sensors and the speed control unit.
  • the speed control device is arranged in systems in inaccessible places, it has proven to be advantageous to operate the speed control device by a remote control. Likewise, it is advantageous if a wired or wireless data exchange takes place between the speed control device and other electronic system components.
  • the speed control device is encapsulated liquid-tight or that the speed control device has longitudinally liquid-tight potted cable entries. As a result, a particularly protected against external influences execution is achieved. This allows applications for floodable and / or explosion proof designs are necessary.
  • the mounting bridge is provided with a flat connection surface for the attachment of the speed control device and with a curved connection surface for attachment to the pipe section.
  • connection surface of the attachment bridge has, according to a further embodiment, raster-shaped openings of the same and / or different shape
  • the openings are formed as round or oval openings or slots in order to achieve by the shape of a variety of mounting options.
  • a mounting grid allows the attachment of speed control devices of different sizes on only one mounting bridge.
  • the mounting bridge is an integral part of the pipe section or that the pipe section is formed as a one-piece or multi-part molded piece with one or more flat connection surfaces.
  • 1 is a view of a mounted on a piece of pipe speed control device
  • Fig. 4 is a speed control device in liquid-tight encapsulated design
  • Fig. 5 is a section through a pipe piece mounted thereon speed control device.
  • Fig. 1 shows an installation unit consisting of a pipe section 1 and a speed control device 2 attached thereto, for example in the form of a frequency converter.
  • the pipe section 1 is a standard part with two connection flanges 3 and 4, which is also known as a so-called FF piece.
  • the pipe section 1 has standardized dimensions and its installation length corresponds to the space requirement of the speed control device 2.
  • a mounting bridge 5 is heat-transmitting to the pipe section 1 and consists wholly or partly of a good heat-conducting material, such as aluminum.
  • the mounting bridge 5 is cup-shaped. It is held by using screwing means and an opposite shell element 5.1 on the pipe section 1.
  • Mounting bridge 5 and shell element 5.1 are on both sides of the pipe section 1 and close it between them.
  • the mounting bridge 5 has on the side facing away from the pipe 1 side a connection surface 6 with mounting options for the speed control device 2.
  • the attachment of the speed control device 2 is carried out in a conventional manner, for example via screw.
  • connections for a mains supply 7 and for a motor winding 8 can be recognized on the speed control device 2.
  • a resulting heat loss of the speed control device 2 transmits the heat-conducting mounting bridge 5 to the pipe section 1 and to a befindliches in the pipe section 1 conveying fluid.
  • the cooling capacity of the pipe section 1 is dependent on the temperature of the conveying fluid and its flow velocity. It is shown as a straight piece of pipe with connection flanges.
  • a curved pipe section is possible.
  • a mounting bridge is used in a design adapted to the curved pipe section, which has a suitable connection surface for mounting a frequency converter. Frequency converters of an existing product series which are designed for wall or motor mounting can be used as speed controller 2.
  • Fig. 2 shows an example of a speed control device 2 in a system.
  • a designed according to FIG. 1 speed control device 2 is mounted on a differently shaped pipe section 9.
  • the pipe section 9 with the speed control device 2 is fastened via a connection flange 10 to a pressure-side connection flange 11 of an immediately adjacent pump 12.
  • the pump 12 is driven by a motor 14 via a drive shaft 13.
  • a diffuser piece is arranged as a pipe piece 9, which is provided in the interior with a contour 15 which changes the cross section.
  • the diffuser piece is provided on the discharge nozzle of the pump 12.
  • the interior of the pipe section 9 has a suitable influence on the flow course for a flow determination according to the differential pressure method. An additional influence on the flow is not given.
  • pressure sensors 16 and 17 are shown on connection flanges 10 and 18. They are connected to lines 19 and 20 with the speed control device 2. By processing the signals supplied by the sensors 16, 17 with the speed control device 2, the function of a flow meter is additionally obtained.
  • one of the many other known methods for determining a flow is applicable, such as a magnetic-inductive flow measurement.
  • separately arranged measuring devices are superfluous.
  • the pressure sensors 16 and 17 and their associated measuring points are integrated here in the connection flanges 10, 18. With appropriate pressure transmission, the sensors can also be arranged outside of the pipe section 9.
  • the flow through the pipe section 9 can be determined. Since the pipe section 9 is arranged here directly on the pressure side of the pump 12, a flow rectifier - not shown here - can be arranged to increase the accuracy of measurement at the pipe section inlet. Alternatively, the flow rectifier can also be arranged as a separate built-in part between pump 12 and pipe section 9.
  • a flow can be determined in the speed control device 2.
  • the operating point of the pump 12 can be determined. This information is utilized in the speed control device 2 and its control algorithms and serves as the basis for the control behavior of the speed control device 2.
  • an I st flow can be easily adapted.
  • FIG. 3 shows a speed control device 2 mounted remotely from a pump in a flow-guiding system.
  • the pipe section 9 is designed as an effective flow meter.
  • the pipe section 9 in the interior of a cross-section changing, here thin drawn contour 15, but in a typical for Venturi tubes course.
  • special internals as known for example in so-called V-cone flow meters, may be arranged.
  • the flow at the installation point of the pipe section 9 is measured.
  • the measurement of the pressure takes place via pressure measuring points with pressure sensors 21 and 22 shown by way of example.
  • pressure sensors 21 and 22 shown by way of example.
  • Several pressure tapping points can also be connected via an annular chamber.
  • a pressure sensor 22 is mounted in the mounting bridge 5 here.
  • the sensors can be mounted on both sides of the mounting bridge 5 in the pipe section 9.
  • An adjustment and / or operation of the speed control device 2 can be done by a remote control when positioning it in inaccessible locations.
  • Fig. 4 shows a speed control device 23 in liquid-tight encapsulated design.
  • the fastening bridge can be formed as an integral part of the pipe piece 24.
  • a separate, easy to produce, plate-shaped, heat-transferring mounting bracket 25 may be arranged.
  • the plate-shaped mounting bridge 25 is arranged only on a partial surface of the pipe section 24.
  • the pipe section 24 in the central region has a polygonal, here hexagonal outer contour to which the speed control device 23 is attached using the plate-shaped mounting bridge 25.
  • the speed control device 23 is encapsulated by a surrounding housing 26 liquid-tight. About it attached cable connections 27 and 28, here longitudinally liquid sealed, takes place a connection with a mains supply and with a motor.
  • a terminal board 29 is used to connect the lines to the speed control device 23.
  • a part of the housing 26 as a sealing arranged, an accessibility in the housing interior enabling Sachedeckel 30 is formed. For reasons of better visibility, the housing 26 has been partially drawn open.
  • a different shape of a mounting bracket 31 is shown for attachment of a speed control device 32.
  • the speed control device 32 can be a frequency converter from an already existing product range, which can also be used here, for example, by eliminating cooling fins during production.
  • the mounting bridge 31 has a flat connection surface 33 for fastening the speed control device 32 and a curved connection surface 34 for attachment to the pipe section 1 with a delivery fluid 35 guided therein.
  • the connection surface 34 is adapted to the pipe section 1.
  • the connection surface 33 is adapted to the speed control devices to be fastened.
  • the connection surface 33 has - not visible here - grid-shaped openings of different shape for the implementation of fasteners. Thus, different sizes of speed devices can be attached to only one mounting bridge.
  • a mounting bracket 31 is shown in one piece.
  • multi-part mounting bridges can be used, which consist of a part for attachment to the pipe section 1 and a part for the attachment of the speed control device 32.
  • connection between the mounting bridges 5, 25, 31 and the pipe sections 1, 9, 24 takes place by known means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un appareil de régulation de la vitesse de rotation avec refroidissement par fluide, destiné à être relié à un moteur d'entraînement et en particulier au moteur d'un groupe motopompe destiné à transporter des fluides. L'appareil de régulation de la vitesse de rotation entoure un conduit qui guide le fluide de transport. L'appareil (2, 23, 32) de régulation de la vitesse de rotation est monté sur une pièce tubulaire (1, 9, 24) qui peut être montée dans le conduit qui guide le fluide (35) de transport en respectant un parcours d'écoulement prédéterminé. Des ponts de fixation (5, 25, 31) en une ou plusieurs pièces assurent le transfert de chaleur vers le fluide (35) de transport.
EP06829680A 2005-12-20 2006-12-16 Appareil de regulation de la vitesse de rotation avec refroidissement par fluide Withdrawn EP1963680A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005060887A DE102005060887A1 (de) 2005-12-20 2005-12-20 Drehzahlregelgerät in fluidgekühlter Ausführung
PCT/EP2006/012156 WO2007071352A1 (fr) 2005-12-20 2006-12-16 Appareil de regulation de la vitesse de rotation avec refroidissement par fluide

Publications (1)

Publication Number Publication Date
EP1963680A1 true EP1963680A1 (fr) 2008-09-03

Family

ID=37888054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06829680A Withdrawn EP1963680A1 (fr) 2005-12-20 2006-12-16 Appareil de regulation de la vitesse de rotation avec refroidissement par fluide

Country Status (3)

Country Link
EP (1) EP1963680A1 (fr)
DE (1) DE102005060887A1 (fr)
WO (1) WO2007071352A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466632A (en) * 2008-12-01 2010-07-07 Electronica Products Ltd Cooling the motor control electronics of a water pump by using the flowing water.
ITUB20154767A1 (it) * 2015-11-03 2017-05-03 Mac 3 S P A Sistema di raffreddamento per inverter
US10907901B2 (en) 2018-12-03 2021-02-02 Balboa Water Group, Llc Cooling device and system for bathing installation pump electrical drive
CN112114538B (zh) * 2020-09-10 2022-05-27 中信重工开诚智能装备有限公司 一种新型防爆变频器水冷散热装置及控制方法

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Publication number Priority date Publication date Assignee Title
DE3115714A1 (de) * 1981-04-18 1982-11-04 Flux-Geräte GmbH, 7000 Stuttgart Fasspumpe mit elektrischem antriebsmotor
DE3642726A1 (de) * 1986-12-13 1988-06-23 Grundfos Int Drehzahlgeregeltes pumpenaggregat
NL9102016A (nl) * 1991-12-02 1993-07-01 Indolec B V Digitaal stuurbare ventilator met communicatiefaciliteiten.
JPH06280707A (ja) * 1993-03-24 1994-10-04 Aisan Ind Co Ltd 電動式燃料ポンプ
EP0645875B2 (fr) * 1993-09-08 2001-01-03 Siemens Aktiengesellschaft Groupe moto-pompe, en particulier dispositif d'antiblocage de frein pour véhicules automobiles
US5863185A (en) * 1994-10-05 1999-01-26 Franklin Electric Co. Liquid pumping system with cooled control module
DE19639098A1 (de) * 1996-09-24 1998-03-26 Wilo Gmbh Motorpumpe mit gekühltem Frequenzumformer
KR20010041509A (ko) * 1998-03-04 2001-05-25 마에다 시게루 유체기계의 성능조정장치
DE19943577A1 (de) * 1999-09-13 2001-03-15 Wilo Gmbh Pumpengehäuse mit integrierter Elektronik

Non-Patent Citations (1)

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Title
See references of WO2007071352A1 *

Also Published As

Publication number Publication date
WO2007071352A1 (fr) 2007-06-28
DE102005060887A1 (de) 2007-06-28

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