EP2158466A1 - Dispositif pour équilibrer des rotors - Google Patents

Dispositif pour équilibrer des rotors

Info

Publication number
EP2158466A1
EP2158466A1 EP08749230A EP08749230A EP2158466A1 EP 2158466 A1 EP2158466 A1 EP 2158466A1 EP 08749230 A EP08749230 A EP 08749230A EP 08749230 A EP08749230 A EP 08749230A EP 2158466 A1 EP2158466 A1 EP 2158466A1
Authority
EP
European Patent Office
Prior art keywords
balancing
ring
rings
yoke
balancing rings
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Withdrawn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
EP08749230A
Other languages
German (de)
English (en)
Inventor
Georg Fischer
Dirk Neumeuer
Axel RÜCKERT
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.)
Hofmann Mess- und Auswuchttechnik & Co KG GmbH
Original Assignee
Hofmann Mess- und Auswuchttechnik & Co KG GmbH
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 Hofmann Mess- und Auswuchttechnik & Co KG GmbH filed Critical Hofmann Mess- und Auswuchttechnik & Co KG GmbH
Publication of EP2158466A1 publication Critical patent/EP2158466A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/30—Compensating imbalance
    • G01M1/36—Compensating imbalance by adjusting position of masses built-in the body to be tested
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/1005—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass
    • F16F7/1011—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass by electromagnetic means

Definitions

  • the invention relates to a device for balancing rotors fixed on a rotating shaft rotors arranged with a measuring device to determine an unbalance vector in size and direction, and at least two over its circumference an uneven mass distribution having Auswuchttringe that are circumferentially mounted with the rotor and be rotatable by means of stationary actuators contactless in the circumferential direction, each having at least one coil for generating an electromagnetic field, which form with the balancing rings a working type of eddy current brake system, the balancing rings are adjustable for the purpose of mass balance.
  • a balancing machine in which the adjustment of imbalance masses or Auswuchtringen during operation is feasible.
  • This device is used for balancing a rotor fixedly arranged on a rotating shaft with two balancing rings having a non-uniform mass distribution over their circumference, which are mounted axially adjacent to one another with the rotor and are rotatable contactlessly in the circumferential direction by means of adjusting means.
  • the balancing rings form the rotor of electric motors that are as long as adjustable by associated, acting as field windings magnetic coils until the necessary mass balance is done.
  • the magnetic coils are arranged stationarily on a stationary part or housing of the balancing unit. The magnetic coils are located radially outside of the balancing rings in the housing. In this device, the balancing rings can be adjusted while the machine is running, so that occurring imbalances can be compensated again even when the machine is running.
  • an electromagnetically actuated compensation device of the above-mentioned type which operates on the principle of an electric motor.
  • the device comprises a plurality of magnetic circuits arranged on the circumference of balancing rings, which are formed in part by the balancing rings and partly by pole plates and a control unit with which the magnetic flux through the circuits can be selectively interrupted, so that the balancing rings in a desired manner
  • the known device comprises a device for measuring the imbalance, a plurality of movable balancing rings, each having a plurality of circumferentially arranged magnets which generate a corresponding number of magnetic fields a plurality of pole plates which are stationary with respect to the balancing rings and which separate the cooperating balancing rings, wherein a plurality of pole plates receive the plurality of magnetic fields, and a control unit direction for generating an electromagnetic field, which selectively interrupts the magnetic fields of the permanent magnets to move the Auswuchtring.
  • a device for unbalance compensation in a tool or balancing machine with a drive spindle, a workpiece holder and a balancing unit in which two counterweight rotors are adjustably mounted, wherein an unbalance vector of vibration sensors on the oscillation amplitude and the phase angle of the Unbalance generated vibration and an adaptive control loop, the balancing unit is controlled such that the unbalance vector is compensated by the balancing unit or brought to a minimum.
  • This device comprises a position determining unit in the adaptive control circuit, by which the actual position of the counterweight rotors is detected after the compensation, and an arithmetic unit in the adaptive control loop, with which from the position of the counterweight rotors the unbalance magnitude and the unbalance angle position of an unbalance vector is calculated ,
  • a method for balancing a rotary body with a balancing apparatus having an adjusting unit for adjusting compensation masses is also known, in which the compensation masses are brought into their zero positions in which the imbalance vectors generated by them cancel each other out.
  • the then existing unbalance vector V1 is then measured according to size and direction.
  • At least one of the compensation masses is displaced by an arbitrary angle or its distance from the axis of rotation is adjusted, whereby an additional unbalance is generated with a calibration unbalance vector V2. The angle of the adjustment or the adjustment of the distance is detected.
  • the existing total imbalance vector V3 is measured in magnitude and direction, and from the imbalance vector V1 and the total imbalance vector V3, the calibration imbalance vector V2 is calculated, with the balancer and rotary body system calibrated. Finally, the compensation masses are moved in such a way that the unbalance vector V1 is compensated.
  • the present invention seeks to provide a device for unbalance compensation, in which the balancing rings during acceleration or deceleration of the rotor are kept safe, but also safe with the rotor running with the least possible control effort can be adjusted.
  • a device of the type mentioned characterized in that the balancing rings rotatably on a yoke connected to the rotor non-magnetic material are arranged in which at least one permanent magnet device is embedded, which cooperates with a profiling on the Auswuchtringen and forms discrete, stable holding positions. Due to the interaction of the permanent magnet device in the yoke with the profilings in the balancing rings, a secure mounting of the balancing rings during accelerations or decelerations of the rotor can be ensured.
  • the device is characterized in that the yoke has a radial yoke ring which is arranged between the Auswuchtringen net.
  • each balancing ring could be assigned its own yoke ring.
  • the device is characterized marked, are provided on the radial yoke ring side extending in the axial direction of the rotor lugs on which the balancing rings are mounted on pivot bearings.
  • the device is characterized in that the balancing rings are mounted by means of flat cage needle bearings on the yoke.
  • Flat cage needle roller bearings as rolling bearings with a particularly low design are particularly advantageous when the balancing device has to be made very small, for example, when the rotor to be balanced has a small design.
  • the device is characterized in that the balancing rings are mounted by means of thin-ring bearings on the yoke.
  • Thin-section bearings are high-precision ball bearings with axial guidance. They are particularly advantageous when relatively large rotors are to be balanced with a compact balancing system.
  • the device is characterized in that the permanent magnet means comprises individual permanent magnets on the yoke, which are distributed over the circumference of the yoke. Each of the permanent magnets then interacts with a profiling on the respective balancing rings, so that, for example, at 360 permanent magnets 360 distributed on the circumference of the yoke, stable holding positions are generated, which are each separated by an angular degree.
  • the device is characterized in that the permanent magnet means comprises a ring magnet on the yoke, which is axially magnetized.
  • the permanent magnet means comprises a ring magnet on the yoke, which is axially magnetized.
  • the device is characterized in that the profiling of the balancing rings have the permanent magnet opposite recesses or holes in the balancing rings.
  • the profiles that serve to form the magnetic circuits can be made in a simple manner from recesses or holes in the balancing rings, so that there is no special processing required.
  • the device is characterized in that the adjusting device is designed as a ring surrounding the rotors.
  • the actuator is designed as a ring surrounding the rotors.
  • the device is characterized in that the adjusting device is designed as a ring segment partially surrounding the rotors.
  • the actuator is formed a ring element partially surrounding the rotors, then material and machining is saved.
  • the device is characterized in that the adjusting devices consist of two magnetically conductive ring parts, each on Inner circumference Polana have that protrude alternately under the opposite ring member to form alternating poles in the assembled state, and that each adjusting device has an annular coil which is arranged between the ring parts.
  • the ring parts Through the coil and the Polan engines the ring parts the magnetic fields are generated in a simple manner, which realize together with the profiling of the balancing rings, the eddy current brake.
  • the device is characterized in that the adjusting device comprises U-shaped magnets with over the inner circumference of the adjusting device alternating poles, and that the magnets are associated with electrical coils, by the electromagnetic field of the actuating device on and off is.
  • This embodiment of the adjusting device is particularly advantageous in balancing devices which are required for balancing heavy machinery rotors with high imbalance forces, for example for turbines and generators, because the stator can then be subdivided into segments which are connected to the rotor in question (turbine or generator). can be attached without having to remove the rotor from its installed state, for example in a power plant.
  • the invention also relates to an adaptive system for imbalance compensation in a tool or balancing machine having a drive spindle, a workpiece holder and a balancing unit, an unbalance vector of vibration sensors being measured via the oscillation amplitude and the phase angle of the oscillation generated by the imbalance and via an adaptive control loop the balancing unit is controlled such that the unbalanced vector is compensated or brought to a minimum by the balancing unit, characterized in that the balancing unit is a device of the type described above.
  • the adaptive system in which the balancing device of the type described above is integrated is particularly advantageous for balancing rotors while they are rotatably driven, that is, the rotor can be balanced without stopping it.
  • the system is characterized by a position-determining unit in the adaptive control loop, by which the actual position of the balancing rings is to be determined.
  • a position determining unit in the adaptive control loop, by which the actual position of the balancing rings is to be determined.
  • the actual position of the balancing rings can also be determined by recording the history of the adjustment of the balancing rings, a position determining unit is advantageous because the recording of a history is not required here.
  • a position-determining unit is more accurate, as well as unintentional adjustments of the balancing rings can be detected.
  • the system is characterized in that the position-determining unit at least one magnet on the rotor and responsive to the magnet sensor in the adjusting device and a reluctance of the Auswucht- ring changing, locally defined device and a Having the reluctance of Auswuchttringes responsive sensor in the actuator.
  • the system is characterized by an arithmetic unit in the adaptive control loop, with which from the position of the counterweight rotors the adjustment of the balancing rings required to compensate for the unbalance vector is calculated.
  • the method can be carried out in an advantageous manner, which is described in the above-mentioned DE 19743578 A1, so that instead of a trial and error method, a targeted adjustment of the balancing rings is possible.
  • the system is characterized in that several balancing units are arranged according to the balancing planes at several balancing planes.
  • the balancing device according to the invention can advantageously be used not only for balancing rotors in a balancing plane but also for balancing rotors in a plurality of balancing planes in which the balancing device according to the invention is arranged at suitable locations along the axis of the rotor.
  • Fig. 1 shows a system for imbalance compensation in a tool or balancing machine
  • Fig. 2 shows an enlarged detail of the balancing unit 4 of Fig. 1;
  • Fig. 3 is a sectional view taken along the line IH-III of Fig. 2;
  • Fig. 4 is a sectional view through an actuator and the associated balancing ring perpendicular to the section in Fig. 3;
  • Fig. 5 shows a side view of a balancing ring
  • Fig. 6 shows a side view of the yoke
  • Fig. 7 is a schematic representation of an adjusting device and a balancing ring, wherein the Actuator comprises magnets;
  • Fig. 8 shows a schematic representation of the electromagnetic field lines of the eddy current brake between the adjusting device and the balancing ring
  • Fig. 9 is a schematic view showing the magnetic retention of the balancing rings on the yoke
  • Fig. 10 is an exploded view of the actuator according to an embodiment of the invention.
  • Fig. 11 shows an actuator having U-magnets
  • Fig. 12 is an exploded view showing a balancing device with thin-ring bearings
  • Fig. 13 shows an exploded view of the balancing device comprising flat cage needle roller bearings
  • Fig. 14 shows an exploded view of a divisible balancing device comprising flat cage needle roller bearings.
  • FIG. 1 schematically shows a system comprising a drive spindle 2 and a balancing unit 4.
  • the balancing unit has an actuating unit 6 with adjusting devices 6a and 6b and a balancing ring unit 8 with balancing rings 8a and 8b.
  • the drive spindle 2 is rotatably mounted on two bearings 10, 12.
  • a position sensor unit 14 with a plurality of individual sensors (not shown) serves to detect the phase angle associated with the imbalance vector via the rotational speed and the rotational position of the spindle 2.
  • a vibration sensor 16 serves to measure the vibration amplitude and phase of the unbalance vector.
  • the output signals of the position sensor unit 14 and the vibration sensor 16 are the output variables for the determination of the imbalance and the manipulated variables for the adjustment of the balancing rings.
  • the position sensor 14 and the vibration sensor 16 are connected via lines 18, 20 to an adaptive control system 22 in which, from the measurement results at the sensors 14, 16, influencing numbers and the unbalance compensation or balancing ring adjustment, i. Actuating variables for the adjustment of the balancing rings in the balancing unit calculated and delivered via a line directly to coils in the adjusting devices 6a and 6b, which are part of the balancing unit 4.
  • the adaptive control system 22 includes a computer capable of detecting the desired transmission characteristics and providing corresponding control signals via the line 24 and a power amplifier 26 to the coils in the balancing unit 4.
  • the adaptive control system 22 can proceed for this purpose by the method of DE 19743578 A1.
  • FIG. 2 shows a detailed representation of the balancing unit 4 with an adjusting unit 6, which comprises the adjusting devices 6a and 6b and two balancing rings 30a, 30b which are respectively mounted via bearings 32a, 32b on shoulders 34, 36 of a yoke ring 38.
  • the yoke ring 38 is mounted on the spindle 2 via the lugs 34, 36.
  • the adjusting devices 6a, 6b each have a coil 40a, 40b which cooperate with housing parts of magnetically conductive material (as described below) electromagnets for realizing the eddy current brake.
  • FIG. 3 is a sectional view taken along the line III-III of FIG. 2 showing permanent magnets 42, 44 in the yoke ring 38, each having opposite polarities along the circumference of the yoke ring 38, that is, NS, SN, NS, etc. as can be seen from FIG.
  • the balancing rings 30a, 30b have through holes 46, 48, between which webs 50, 52 are provided on the balancing rings 30a, 30b. Due to the interaction of the permanent magnets 42, 44 with the webs 50 and 52, the balancing rings 30a, 30b are held on the yoke 38, the magnetic field lines being indicated by the dashed line 54.
  • Figure 4 shows a schematic side view of the actuator 6a and the balancing ring 30a of Figure 3.
  • the position of the permanent magnets 42, 44 in the yoke ring (not shown) with respect to the holes 46 of the balancing ring are shown schematically.
  • the coil 40a is provided, which generate electromagnetic fields by Polan instruments 56, 58, as indicated by the dashed line 60, for example, and thus form an eddy current brake with the Auswuchtring 30a when switching on the coil 40a.
  • FIG. 5 is a side view of the balancing ring 30a with the bores 46, and the balancing ring 30a is to be supported via the bearing 32a on the lateral projection 34 (FIG. 2) of the yoke ring 38.
  • 6 is a side view of the yoke ring 38 with the permanent magnets 42, 54 and the lateral projection 34.
  • 2N permanent magnets are provided on the yoke ring 38
  • N holes are provided on the balance ring 32a to form the magnetic circuits shown in FIG.
  • Figures 7 and 8 show schematically the operation of the eddy current brake in the balancing device according to the invention.
  • Shown schematically in Figure 7 is a side view of a balancing ring 64 and actuator 66 having U-shaped electromagnets, such as electromagnet 68, having a south pole 68a (S) and north pole 68b (N), with south pole 68a and north pole 68b a coil 69a or 69b is provided in each case, so that the coil is a wound to the other coil.
  • electromagnet 68 having a south pole 68a (S) and north pole 68b (N)
  • south pole 68a and north pole 68b a coil 69a or 69b is provided in each case, so that the coil is a wound to the other coil.
  • Such balancing rings a radial eddy current brake is realized.
  • the eddy current brake is based on the fact that in an electrically conductive material, which is located in a magnetic field and moves, a charge balance takes place, the so-called eddy current. On a current flowing through the conductor in the magnetic field acts a force that counteracts the movement of the moving material. To utilize this effect, there are alternating radial magnetic poles N and S around the circumference of the balancing ring 64, which, with the control of coils, generate eddy currents in the balancing ring 64, as shown in FIG. 8, in which the adjusting means 66 and Balancing ring 64 are shown schematically.
  • the field lines 70 of the eddy current brakes are also shown schematically and are generated by the E- lektromagneten 68.
  • FIG. 9 is an equivalent view of a magnetic circuit which holds the balancing rings 30a, 30b on the yoke ring 38.
  • the magnets 42, 44 are each arranged with opposite polarization and cooperate with the respective webs 50 and 52, respectively, to form the magnetic circuits shown in electromagnetic equivalency.
  • the balancing ring is adjusted by the eddy current brake only against the direction of rotation of the rotor to be balanced.
  • a pulse of certain strength and pulse duration is generated in the coil of the adjusting device, whereby a tangential force and thus a moment is exerted on the balancing ring in the balancing ring.
  • the balancing ring is adjusted against the direction of rotation of the rotor by pulling the balancing ring from a stable holding position to the cross-bordered point between two holding positions and then landing in the next stable holding position if at this moment the eddy current brake is switched off.
  • the switching on and off of the eddy current brake is required to adjust the balancing rings.
  • FIG. 10 is an exploded view of an actuator 6, as shown schematically in FIGS. 2 and 4.
  • the actuating unit 6 has a first actuating device 6a and a second actuating device 6b.
  • the adjusting device 6a has two yoke ring parts 70, 72 and a coil 74.
  • the two magnetically conductive yoke ring parts 70, 72 each have on their inner circumference Polan accounts 76, 78, in the Assembled state alternately project under the opposite yoke ring member 70 and 72 to form alternating poles, as can be seen also from Figure 4.
  • the toroid 74 is disposed between the yoke ring members 70, 72.
  • the adjusting device 6b is constructed analogously to the adjusting device 6a, so that a renewed description is unnecessary. Between the adjusting devices 6a and 6b, an intermediate ring (not shown) is provided, on which a sensor arrangement 82 is provided, which has a sensor corresponding to the sensor 14 in Figure 1. The operation of the sensor will be described below.
  • FIG 11 is an embodiment of the actuator 6 in which the eddy current brake is realized by individual U-magnets 84, 86 arranged in the actuator 6a and 6b, respectively.
  • the U-magnets 84, 86 are driven by coils 88, 90, which are respectively connected circumferentially in series in each actuator 6a and 6b, respectively, to turn on or off the eddy current brake.
  • FIG. 12 is an exploded view of the arrangement consisting of the yoke ring 38 and the expulsion rings 30a, 30b, wherein the balancing rings 30a, 30b are mounted on the lateral projections 34, 36 of the yoke ring 38 via the thin-ring bearings 32a, 32b, as well as in FIG 2 is shown.
  • the assembly is completed by a terminating ring 94a or 94b on both sides of the unit.
  • FIG. 12 also shows the position determination unit for the adaptive control loop, by means of which the actual position of the balancing rings is to be determined.
  • the position determining unit includes a magnet 96 in the end ring 94b and a sensor 96 responsive to the magnet 96 in the holder 82 of the actuator 6, and a reluctance of the balancing ring 30b changing locally defined means such as a notch 98 and one the reluctance of the Auswucht- rings 30b responsive sensor in the sensor assembly 82 of the actuator 6 on.
  • the balancing ring 30a has a corresponding notch (not shown) which also cooperates with a sensor in the sensor assembly 82 in the actuator.
  • FIG. 13 is an exploded view of an assembly having the balancing rings 30a, 30b and end rings 100a and 100b, respectively.
  • the balancing rings 30a, 30b are mounted in this case on Flachhanfig- needle roller bearings 102a and 102b on the lugs 36 and 38 of the yoke ring 38.
  • a sliding ring 104a or 104b is inserted between the yoke ring 36 and the balancing rings 32a and 32b respectively, by which the distance between the Balancing rings 32a, 32b determined by the yoke ring 38 and the storage of the balancing rings 30a, 30b opposite the yoke ring 38 is completed.
  • the position-determining device which has a magnet 106 on the end ring 100b and a notch 108 on the balancing ring 30b and a notch 110 on the balancing ring 30a.
  • FIG. 14 is an exploded view of a balancing device having an actuator 118 and a balancing unit 120 having balancing rings 122, 124.
  • the balancing rings 122, 124 are mounted in this case via flat cage needle roller bearings 130 and 132 on the lugs 134 and 136 of the yoke ring 138.
  • a spacer for example a split sliding ring (not shown), is inserted, by which the distance of the balancing rings 122, 124 from the yoke ring 138 is determined.
  • a spacer for example a split sliding ring (not shown)
  • both the setting unit 118 and the balancing unit 120 are divided and consist of setting unit halves 118a, 118b, balancing ring halves 122a, 122b; 124a, 124b and yoke ring halves 38a, 38b, and the needle bearings 130, 132 are needle bearing strips inserted as such between the balancing rings and the ears of the yoke ring 138.
  • the balancing device is thus divisible and configured assembled to ring components.
  • the adjusting unit 118 is otherwise constructed like the setting unit in FIG. 11, and the balancing unit 120 is otherwise constructed like that from FIG.
  • Actuator halves 118a, 118b, balancing ring halves 122a, 122b; 124a, 124b and yoke ring halves 38a, 38b can be placed on the rotor to be balanced and then joined there, for example by screw connections.
  • the system of actuator and balancing unit can also be installed on rotors, which should not be removed from their machine environment for the purpose of installing the balancing device. This applies, for example, to generator turbines, in which the installation and removal of a turbine would mean a too long time and thus shutdown of the turbine.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un dispositif pour équilibrer des rotors disposés fixement sur un arbre rotatif, avec un dispositif de mesure, pour déterminer un vecteur de déséquilibre en fonction de la taille et de la direction, ainsi qu'au moins deux bagues d'équilibrage (30a, 30b) présentant une distribution de masse irrégulière sur leur périphérie. Les deux bagues d'équilibrage sont montées à rotation avec le rotor et peuvent tourner sans contact dans la direction périphérique au moyen de dispositifs de commande stationnaires (6a, 6b) qui présentent chacun au moins une bobine pour produire un champ électromagnétique. Les dispositifs de commande produisent avec les bagues d'équilibrage (30a, 30b) un système fonctionnant comme un frein à courant parasite, et les bagues d'équilibrage (30a, 30b) peuvent être réglées pour équilibrer les masses. L'invention est caractérisée en ce que les bagues d'équilibrage (30a, 30b) sont disposées de manière à pouvoir tourner sur une culasse connectée au rotor, et constituée de matériau non magnétique, dans laquelle au moins un système d'aimant permanent est incorporé. Ce dernier coopère avec un profilage sur les bagues d'équilibrage (30a, 30b) et forme des positions de retenue discrètes et stables.
EP08749230A 2007-06-21 2008-04-29 Dispositif pour équilibrer des rotors Withdrawn EP2158466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007028728A DE102007028728A1 (de) 2007-06-21 2007-06-21 Vorrichtung zum Auswuchten von Rotoren
PCT/EP2008/003476 WO2008154983A1 (fr) 2007-06-21 2008-04-29 Dispositif pour équilibrer des rotors

Publications (1)

Publication Number Publication Date
EP2158466A1 true EP2158466A1 (fr) 2010-03-03

Family

ID=39689393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08749230A Withdrawn EP2158466A1 (fr) 2007-06-21 2008-04-29 Dispositif pour équilibrer des rotors

Country Status (3)

Country Link
EP (1) EP2158466A1 (fr)
DE (1) DE102007028728A1 (fr)
WO (1) WO2008154983A1 (fr)

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US10030961B2 (en) 2015-11-27 2018-07-24 General Electric Company Gap measuring device

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