EP2073228B1 - Kompakte, robuste Steuerung für elektrische Mittel- und Hochspannungsgeräte - Google Patents

Kompakte, robuste Steuerung für elektrische Mittel- und Hochspannungsgeräte Download PDF

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Publication number
EP2073228B1
EP2073228B1 EP08171622A EP08171622A EP2073228B1 EP 2073228 B1 EP2073228 B1 EP 2073228B1 EP 08171622 A EP08171622 A EP 08171622A EP 08171622 A EP08171622 A EP 08171622A EP 2073228 B1 EP2073228 B1 EP 2073228B1
Authority
EP
European Patent Office
Prior art keywords
switch
closing
lever
opening
locking means
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.)
Active
Application number
EP08171622A
Other languages
English (en)
French (fr)
Other versions
EP2073228A1 (de
Inventor
Ernst Suter
Xavier Allaire
Philippe Manin
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.)
GE Grid Switzerland GmbH
Original Assignee
Areva T&D 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 Areva T&D AG filed Critical Areva T&D AG
Publication of EP2073228A1 publication Critical patent/EP2073228A1/de
Application granted granted Critical
Publication of EP2073228B1 publication Critical patent/EP2073228B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3073—Indication of the charge on the spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3078—Power arrangements internal to the switch for operating the driving mechanism using spring motor using an inertia element, e.g. a flywheel, to controll the energy released by the spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3031—Means for locking the spring in a charged state
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors

Definitions

  • the present invention relates to mechanical controls for medium and high voltage electrical equipment.
  • Such mechanical controls are known for example from the document EP 0 651 409 and document EP 1 178 505 .
  • These commands comprise several levers able to be rotated by means of an energy stored in springs, to cause the opening and closing of a switch.
  • a lever is provided for transmitting a closing force of the switch, a lever for transmitting an opening force of the switch, a lever for acting directly on the switch, a lever for locking the switch in the closed position and a lever allowing a damping of the command during a closing operation of the switch.
  • This command has a very large footprint, a high realization complexity, and their cost is high.
  • control is connected to the switch, so that the control and the switch are biased by additional transverse stresses that may reduce the life of the switch or control.
  • an opening and closing switch control having a platen, rotatably mounted on a mounting plate by means of a main shaft, means for opening and closing the switch, and means for locking the switch in the closed position, the plate, the means for opening and closing the switch and the means for locking the switch in the closed position being substantially in the same plane, the switch being connected to the main shaft.
  • the number of parts is reduced, the order is more compact and the cost is reduced.
  • a portion of the forces is transmitted by the plate and applies in the plane of the plate, not the tree, the constraints on the shaft are reduced.
  • the closing means of the switch comprise a cam cooperating with the plate to tilt and cause the closing of the switch.
  • This cam is integral in rotation with a drive wheel, this wheel being driven by a spring fixed on the one hand to the wheel and on the other hand to the mounting plate so that the spring overlaps the plate. The order is then made even more compact.
  • the control therefore uses a lever plate to perform different functions, which reduces the dimensions, including the depth of control.
  • This allows to have the closing spring in a plane parallel to that of the lever, the closing spring is then superimposed on the lever.
  • the grouping of several levers in a single plate and the particular arrangement of the closing spring makes it possible to obtain particularly compact control.
  • the storage of the mechanical energy of opening and the systems for maintaining and releasing the opening energy are carried out in a same plane.
  • the main shaft comprises for example a lever connected in rotation to the main shaft and connected to the movable contact.
  • the force transmission means may comprise a cam secured to rotate on a closing shaft parallel to the main shaft, intended to come into contact with a second zone of the plate to apply a tilting force to the plate fixed to the main shaft in a first direction of rotation to cause the closing of the switch, said cam being rotatably connected to a drive disk adapted to be rotated by elastic energy storage means comprising a closing spring, said closing spring being disposed in a second plane substantially parallel to the first plane, said closing spring being rotatably mounted by a first end on the first mounting plate and a second end on the drive disc.
  • the control may also include means for loading the closing spring, said means comprising means for rotating the drive disc in the same direction as that of the rotation caused by the release of energy stored in the closing spring.
  • the means for charging the closing spring comprise, for example a gear train, driven by an electric motor, a pinion meshing teeth of the periphery of the drive disc.
  • control advantageously comprises opening locking means adapted to exert a force of immobilization on the drive disk in a loaded state of the closing spring.
  • the drive disk, the pinion meshing with the drive disk and the opening locking means are advantageously arranged substantially in the same third plane, parallel to the first plane. This reduces the depth of the order.
  • the closing spring overlaps the plate, which reduces the size of the control.
  • the opening actuator comprises, for example an opening spring adapted to drive the plate in a second direction of rotation opposite to the first direction of rotation, to cause the opening of said switch, the opening spring being mounted on the same face of the first mounting plate as the plate, the closing spring being disposed on another face of the first mounting plate, the opening spring having a first end rotatably mounted on the first mounting plate of the same side than that of the first end closing spring relative to the plate, and a second end rotatably mounted on the plate.
  • the closing spring crosses the opening spring, which makes the control even more compact.
  • the closing shaft is preferably opposite the opening spring with respect to an axis substantially parallel to the axis of the opening spring and secant with the main shaft.
  • the closing spring and the opening spring are coil springs working in tension.
  • the axis of the opening spring forms an angle of approximately 45 ° with respect to a horizontal direction, which makes it possible to position the control horizontally or vertically.
  • the control may comprise means for damping the rotation of the plate under the action of the opening spring.
  • these damping means are arranged inside the opening spring, which reduces the space requirement.
  • the closing locking means cooperate with an operating lever rotatably mounted on the plate.
  • the control can then include stop means for stopping the means for loading the closing spring when the required load of the closing spring is reached, said stop means comprising a wheel integral in rotation with the drive disk, said wheel having a step at its perimeter, said recess being adapted to cooperate with a mechanism for deactivating the loading means, said recess being oriented angularly with respect to the drive disk to correspond to a rotation of the drive disk corresponding to the required load.
  • the deactivation means form, for example a switch capable of interrupting the power supply of said motor.
  • the control may comprise means for isolating the means for loading the closing spring of the drive disc as soon as the drive disc has reached a top dead center corresponding to the required load of the closing spring, these means being formed by means of least one tooth of the drive disc radially retractable.
  • the locking means in closing and opening are, for example arranged on one side of the closing spring opposite to that containing the main shaft.
  • control comprises manual actuation means capable of alternately releasing the opening locking means and the closing locking means to allow the closing and opening of the switch respectively, which makes it possible to have a unique device for both unlocking in closing and opening the order, to reduce the size and cost.
  • the manual actuation means may comprise a lever rotatably mounted on the first mounting plate, disposed between the closing locking means and the opening locking means.
  • the lever may be able to be actuated at a first end and intended to come into contact with one end with a lever of the opening locking means and with another end with a lever locking means closing to tilt said levers and allow the release of the closing energy and the opening energy respectively.
  • said lever may comprise a first portion and a second portion, the first portion carrying a second end adapted to cooperate with the lever, adapted to deactivate the opening locking means, and the second portion having a radial projection. adapted to cooperate with the lever, adapted to deactivate the closing locking means.
  • the closing locking means and the opening locking means are, for example, mounted on either side of the first mounting plate.
  • the gear train of the means for loading the closing spring are advantageously arranged on an opposite side of the closing spring with respect to the main shaft, closer to the closing shaft than the manual actuating means.
  • the control also advantageously comprises switch state indicator means, said status indicator means being arranged on the same side of the closing spring as the main tree.
  • Said state indicator means comprise, for example, position indicator electrical switches, a visual position indicator and means for locking a lever, opening locking means, position indicator electrical switches, visual indicator position and the locking means being connected to the plate by connecting rods.
  • the control preferably comprises a second mounting plate parallel to the first mounting plate, the plate being disposed in a space between the plates, and in which the main shaft projects from one side of at least one of the plates. mounting, outside the space between the two plates.
  • the plate is distributed in at least two parallel planes, the plate can then comprise several levers mechanically assembled in a fixed manner.
  • the present invention also relates to medium and high voltage electrical equipment comprising a switch provided with a movable contact in translation and a fixed pole, and a control according to the present invention.
  • the switch may comprise a shaft rotatable about its axis and a lever integral in rotation with the shaft, the lever being connected to the movable contact in translation, so that a rotation of the shaft about its axis causes a displacement in translation of the contact mobile, and wherein the main shaft and the switch shaft are coaxial and rotationally secured.
  • a lever is secured in rotation of the main shaft at its projection of one of the mounting plates, said lever being connected to the movable contact.
  • the electrical equipment according to the invention comprises a connecting rod system for connecting the lever to the movable contact in translation of the switch.
  • the lever is for example connected to the movable contact in translation by a movable part in translation.
  • the lever comprises an oblong slot in which is intended to be mounted with play an end of an element rigidly connected to the mobile pole in translation of the switch, or the lever comprises a toothed angular sector for engaging a toothed portion rigidly connected to the pole mobile in translation of the switch.
  • the height of the control is defined as the dimension in the vertical direction on the Figure 1A , the width, the dimension in the horizontal direction and the thickness the dimension along an axis perpendicular to the plane of the sheet of the Figure 1A .
  • FIG. 1A an exemplary embodiment of a mechanical control C of a switch, in particular a circuit breaker according to the present invention, can be seen.
  • This command comprises two mounting plates 2, only one of which is visible on the Figure 1A , between which is rotated a plate 4 by means of a main shaft 6, the plate 4 is disposed substantially parallel to the mounting plates 2.
  • the main shaft 6 is rotatably mounted between the two parallel mounting plates 2 by means of bearings.
  • the main shaft 6 is rotatably mounted between the two parallel mounting plates 2 by means of bearings.
  • the plate 4 is intended to transmit forces between different actuators and a switch (not shown).
  • the main shaft 6 passes through the plate 4 substantially in a central portion thereof and is secured in rotation thereto by means of splines in the example shown.
  • Other types of connection between the shaft 6 and the plate 4 are possible, for example by the use of hexagonal profiles, since no torque is transmitted to the shaft 6.
  • the main shaft 6 is intended to be connected to a switch, more particularly to a movable contact of the switch, to cause an opening or closing of the switch.
  • the plate 4 has substantially the shape of a pentagon having five sides 10.1, 10.2, 10.3, 10.4, 10.5, two sides 10.1 and 10.2 of which form a concave angle 12.1 (FIG. Figure 2A ).
  • Each of the vertices 12.1, 12.2, 12.4 and 12.5 is connected to means able to exert or receive a force on or platinum.
  • the top 12.4 is intended to receive a force exerted by a rotary actuator causing the tilting of the plate in the closing direction of the switch, hereinafter referred to as closing actuator 100.
  • a roller 16 rotatably mounted at the top 12.4 is advantageously provided and is intended to come into contact with a rotary cam which will be described below, to reduce the frictional forces.
  • the top 12.5 comprises an operating lever 20 intended to cooperate with locking means in the closed position 200 of the plate 4.
  • the top 12.1 is connected to indicator means 300 of different positions taken by the switch.
  • the top 12.2 is connected to an actuator intended to cause the plate to tilt in a direction of opening of the switch, hereinafter referred to as the opening actuator 400.
  • the vertex 12.3 is, meanwhile, connected to any command in the example shown.
  • the rotation of the main shaft 6 is converted into translation of the moving contact of the switch.
  • the main shaft 6 has an end 6.1 projecting from the mounting plate 2 on which is fixed in rotation a lever 15 transmitting the force to the switch.
  • the free end of the lever 15 can be connected to the moving contact by a connecting rod system, a rotation of the main shaft 6 about its axis causing a translation of the movable contact.
  • the main shaft 6 is coaxial with a control shaft of the switch. This example will be described in detail later
  • the vertices 12.2, 12.4 and 12.5 are substantially at the same distance from the main shaft 6. But other embodiments are possible to obtain specific transmission ratios.
  • the vertices 12.2 and 12.4 are substantially symmetrical with respect to the main shaft 6.
  • a judicious choice of the angles makes it possible in particular to avoid collisions between the different functional units (plate, springs, ratchet, cam) and to influence the reports of transmissions.
  • the top 12.1 is advantageously concave, to avoid collisions between the plate and the opening spring.
  • the plate 4 comprises two parallel plates 4.1, 4.2 visible on the Figure 2B fixed in rotation to the main shaft 6, these plates 4.1, 4.2 being for example 20 mm apart.
  • the plane of the plate designates, in the case of a plate formed by a sheet metal plate, the plane containing the plate, and in the case where the plate is formed by several plates, for example two parallel plates 4.1, 4.2 as in the example shown, any plane located between the two plates, parallel thereto.
  • the plate can then be made in such a way that it is actually contained in several parallel planes arranged close to each other. Indeed, it can be provided that the plate is made by stamping a sheet, or molding a metal alloy, or even by welding or screwing several levers, in order to achieve a plate formed of a set of different levers contained in several parallel planes, for example 20 mm apart.
  • This particular configuration in several close superimposed planes does not cause significant stress on the main shaft 6, so it is not necessary to provide a large diameter shaft to withstand significant mechanical stresses.
  • the control according to the invention always offers great compactness in height and width.
  • the plane of the plate designates all plane located in this interval 20 mm and parallel to the two plates 4.1, 4.2.
  • the closing actuator 100 shown in isolation is visible on the Figures 3A and 3B .
  • the closing actuator 100 comprises a cam 102 rotatably mounted on the mounting plate 2 by a shaft 104, called a closing shaft, by means of bearings 103.
  • the closing cam 102 is parallel to the mounting plate 2 and has substantially the shape of a crescent rotatably fixed on the shaft 104 at a point 105 connecting a portion of greater curvature 106 of the cam 102 and a part of smaller curvature 108.
  • the closure cam 102 is intended to come into contact with the roller 16 carried by the plate 4, on the contact zone defined between the tip 105 and the tip 110 on the side of the zone of the greatest curvature 106.
  • the contact between the contact zone 106 and the roller 16 causes tilting of the plate 4 in a direction of closure of the contactor, in the example shown, this corresponds to a rotation in the counterclockwise direction of the plate 4 around the main shaft 104.
  • the actuator 100 comprises drive means 112, formed by elastic means, in the example shown a coil spring 114, said closing spring.
  • the spring 114 is mounted by a first end 114.1 free to rotate on the mounting plate 2 and a second end 114.2 on a drive disc 116 integral in rotation with the closing cam 102, also free to rotate.
  • the drive disc 116 is fixedly rotatably mounted on the shaft 104.
  • the closing spring 114 works in tension.
  • the spring 114 more precisely its longitudinal axis is disposed in a plane parallel to that of the plate 4 and overlaps it. Indeed, the first end 114.1 fixed to the mounting plate 2 is located below the plate 4, and the second end 114.2 attached to the drive disc 116 is located above the plate. Thus the plane containing the axis of the closing spring 114 is superimposed on that of the plate 2. Thus, we obtain a control whose transverse dimensions are reduced, including its height and width. In addition, the use of a single plate combining several functions is made possible, as will be explained in the following description, to reduce the thickness of the command.
  • the disposition of the closing spring 114 is such that the spring passes the side of the main shaft 6 and does not interfere with it.
  • the drive disk 116 is disposed above the plate 4 in the representation of the control.
  • the closing spring 114 is arranged to be positioned substantially along a diameter of the drive disk 116, its first end 114.1 being fixed to the mounting plate 2, opposite the drive disk 116 relative to the plate 4.
  • the closing spring 114 extends substantially over the entire height of the control in the representation of the Figure 1A .
  • the closing spring 114 is intended to store elastic energy which, when it is released, drives the driving disk 116 in a clockwise rotation around the shaft 104, as well as the closing cam 102. .
  • the closing spring 114 is thus disposed in the control, so that the release of the elastic energy causes the rotation of the drive disk 116 in a clockwise direction causing the closing of the switch.
  • the loading of the closing spring 114 is carried out by clockwise rotation of the driving disc 116 around the shaft 104 by means of a rotary electric motor 118 which drives a gear train 120, one of which meshes with toothed perimeter 116.1 of the drive disk 116.
  • the electric motor 118 and the gear train 120 are arranged on one side of the drive disk 116 opposite the force transmission rod with respect to the plate 4.
  • the motor 118 drives the drive disk via the gear 120 which reduces the rotation of the motor 118.
  • the gear comprises a freewheel coupling device (not shown), an exemplary embodiment of which is known from FIG. document EP 1 408 522 allowing the drive disk 116 to rotate rapidly during a switch operation without driving the motor.
  • the drive disk 116 further includes a retractable section (not shown) which decouples the motor 118 and the drive disk 116 as soon as the drive disk 116 has passed the top dead center position of the closing spring. 114.
  • the top dead center is the full load position of the closing spring 114.
  • the retractable section is for example known from the document EP 1 369 886 .
  • the disconnector is closed driven by the closing spring 114 via the drive disk 116, the closing cam 102 and the plate 4.
  • the driving disk 116 rotates until the inertia of it is stored in the closing spring 114.
  • the motor 118 is activated earlier.
  • the freewheeling coupling device couples the drive disk and the motor as soon as the rotational speed of the drive disk has decreased to the reduced rotational speed of the motor 118.
  • the motor drives the drive disk. drive 116 to the top dead center of the closing spring 114. Beyond this top dead center, the closing spring 114 drives the drive disc 116 until it is stopped by the opening lock 600 The motor and the gear are then decoupled from the wheel 116 by the retractable section.
  • the engine 118 is stopped by the switch 124, switched by the lever 126, whose position is controlled by the shape of the disc 130.
  • This example of driving in rotation of the drive disk 116 is in no way limiting and any other drive means may be suitable.
  • the spring 114, the motor 118 and the gearset 120 may be replaced by a hydraulic or pneumatic system or by an electric motor connected to the actuator 100.
  • the actuator 100 also comprises means 122 for switching off or energizing the motor and for controlling the load of the closing spring 114.
  • These means 122 comprise a switch 124 capable of interrupting the power supply of the motor when the required load of the closing spring 114 is reached.
  • the switch 124 is connected to a lever 126 by a transmission bar 128, the lever 126 being rotated when the required load is reached.
  • the lever 126 is rotatably mounted on the mounting plate 2 and is intended to come into contact with an angular zone 130.1 of a control wheel 130 which is coaxial with the drive disc 116 and integral in rotation therewith.
  • the angular zone 130.1 forms a recess on the outer periphery of the control wheel 130 radially inwards.
  • the lever 126 can then occupy two positions, a first position in which a free end 126.1 of the lever is in contact with the circular periphery of the control wheel 130 (shown in dashed line on the Figure 1A ) and a second position in which the free end 126.1 of the lever enters the recess 130.1 (shown in solid line on the Figure 1A ).
  • the lever 126 is resiliently biased into contact with the control wheel 130 by a torsion spring 132.
  • the control wheel is advantageously sized to form a mass of inertia.
  • a visual indicator 134 of the spring load is also provided in the form of a disc rotatably connected to the lever 126, this disc is visible from the outside.
  • the disc 134 has visual cues corresponding to the loaded / unloaded position of the spring 114.
  • the closure actuator 100 has the advantage of being safe and robust.
  • the means for loading the spring 114 combines the means for loading the spring 114, the mass of inertia which makes it possible to control the time and the closing speed of the contactor, the control means of the electric motor for the loading of the closing spring 114 and the control a visual indicator of the load of the closing spring 114.
  • the opening actuator 400 comprises means for storing elastic energy, these means are formed by a helical spring 402, called an opening spring, rotatably mounted by a first end 402.1 on the mounting plate 2 and by a second end 402.2 on the plate 2 at the angle 12.2.
  • the opening spring 402 works in tension.
  • the damping means 500 are provided inside the helical spring 402, and also fixed to the plate 4 at the angle 12.2.
  • damping means 500 or brake are intended to damp the movement of the plate when the opening spring 402 causes the tilting of the plate 4 in a direction of opening of the contactor.
  • Such means are well known to those skilled in the art and for example the document EP 1 130 610 , and will not be described in detail.
  • the first end 402.1 of the opening spring 402 is fixed on lower possible on the mounting plate 2 away from the plate 4, opposite the opening cam 102 relative to the plate 4.
  • the opening spring / brake 402 is advantageously inclined at an angle of approximately 45 ° with respect to the vertical direction upwards and to the right of the Figure 1A .
  • the plate 4 When the elastic energy stored by the opening spring 402 is released, the plate 4 is driven in a clockwise direction, causing an opening of the contactor.
  • the opening spring 402 is a tension spring, which is loaded during a closing phase of the switch by tilting the plate 4 in the counterclockwise direction. This tilting causes a tension force at the second end 402.2 of the opening spring 402.
  • the distance between the axis of the main shaft 6 and the axis of the closing shaft 104 is equal to the maximum diameter of the cam, the radius of the main shaft 6 with a tolerance of + 30% of the maximum radius of the cam.
  • closing locking means 200 which act on the plate 4 at the angle 12.5 and the opening locking means 600 which act directly on the drive disc 116.
  • the locking means 200 and 600 are interposed between the opening spring 402 and the means for loading the closing spring 114.
  • the locking means 200 are intended to immobilize the plate 4 in a closed position of the contactor against the force of the opening spring 402, which tends to tilt the plate 4 in a direction of opening of the contactor .
  • the closing locking means 200 are such that they make it possible to immobilize the plate 4 subjected to a large torque by transforming it into a lower torque.
  • the closing locking means 200 are arranged between the two mounting plates 2, since they cooperate directly with the lever 20 integral with the plate 4.
  • the closing locking means 200 comprise a system of levers, in series, supported by one end on the operating lever 20 rotatably mounted on the plate 4 at the angle 12.5.
  • the locking means 200 comprise a first lever 202, rotatably mounted on the mounting plate 2, intended to come into contact with an end 202.1 with an end 20.1 of the operating lever 20.
  • the opening spring 402 applies a force at the plate 4 in the clockwise direction, the plate 4 then transmits to the operating lever 20 a force which it transmits to the first lever 202, the direction of application of which does not pass through the axis of rotation of the first lever 202, a torque M1 is then generated.
  • the locking means 200 comprise a second lever 204 rotatably mounted on the mounting plate 2, to which the first lever 202 applies a force by an end 202.2 on one end 204.1, in a direction not passing through the axis of rotation of the second lever 204, a torque M2 is then generated.
  • the torque to which the second lever 204 is subjected and which tends to rotate it clockwise is taken up by a puck 210 held stationary, forming a mechanical stop and able to be moved by electrical control means 212.
  • the locking means also comprise a third lever 206 rotatably mounted on the mounting plate, intended to cooperate directly with the puck 210 for manual unlocking by a lever which will be described later.
  • the electrical control means 212 comprise at least one electromagnet 214 capable of moving the puck 210 in order to release the second lever 204 in rotation in a clockwise direction, which releases in rotation the first lever 202, which releases the operating lever 20 and therefore the plate 4; it then switches in the clockwise causing the opening of the contactor.
  • Torsion spring type return means are also provided on each of the levers 202, 204, 206 and on the pallet 210 to return them to the locking position.
  • Rollers are advantageously provided on the levers at the ends intended to come into contact to reduce friction.
  • the operating lever 20 carried by the plate 4 is also biased into position by a spring 24. Thus, when the plate 4 can resume its initial position during a closing step and be locked in position by the locking means in closing 200.
  • the electrical control means 212 are actuated when the need to open the contactor is detected.
  • the manual opening means will be described later.
  • the closing locking means 200 are arranged below the electric motor 118 and the drive wheel 116, laterally with respect to the plate 4.
  • Opening locking means 600 are also provided.
  • Figures 4A and 4C intended to immobilize the drive disk 116 against the force of the closing spring 114, which tends to tilt the plate 4 in a closing direction of the contactor. These are arranged in the example shown above the closing locking means 200.
  • the opening locking means 600 comprise, in a manner similar to the closing locking means 200, a system of levers ensuring the recovery of the torque exerted by the closing spring 114 on the drive disc 116 by a puck (not visible) immobilized by electrical control means with respect to the mounting plate 2.
  • the opening locking means 600 are mounted on the mounting plate 2 on the opposite side to that on which the closing locking means 200 are fixed.
  • the lever system comprises a first lever 604 for receiving a force from the drive disk 116, the first lever 604 being in contact by one end 604.1 with a roller 117 pivotable on the radially outer periphery of the drive disk 116 .
  • the force exerted by the closing spring 114 tends to rotate the drive disk 116, this force is applied to the first lever 604 in a direction not passing through its axis of rotation, a torque is then generated. This pair tends to rotate the first lever 604.
  • the pair is taken up by a puck held stationary, forming a mechanical stop and able to be moved by an electrical control means 612.
  • the opening locking means 600 also comprise a second lever 606 rotatably mounted on the mounting plate, intended to cooperate directly with the puck 610 for manual unlocking by a lever which will be described later.
  • the electrical control means 612 comprise at least one electromagnet 614 able to move the puck in order to release in rotation a first lever 604, which releases the disk drive 116, which then drives the plate 4 in the counterclockwise direction causing the closing of the contactor.
  • Torsion spring type return means are also provided on each of the levers 604, 606 to return them to the locking position.
  • a roller is also advantageously provided on the lever at the ends intended to come into contact, to reduce friction.
  • the opening locking means 600 are arranged between the electric motor 118 and the closing locking means 200.
  • the opening locking means 600 are arranged to be able to act on the drive disk 116 and are located in an orbital position with respect to the axis of rotation of the drive disk 116, which provides certain freedom to position the locking means.
  • the plate is connected at its angle 12.1 to the indicator means 300 of different positions taken by the switch.
  • the indicator means 300 comprise electrical position indicator switches 302 (only one is shown on the Figure 1A for the sake of clarity) arranged below the plate 4, a visual position indicator 308 in the form of a disc disposed between the switches 302 and the opening spring 402, and opening locking means locking.
  • the switches 302 are controlled by the plate 4 by means of a connecting rod 304.
  • Several switches 302, for example four are provided and controlled jointly by means of a bar connecting the four switches, this bar being itself connected to the connection bar 304.
  • the visual indicator 308 is in the form of a disk adapted to be rotated by a connecting rod 312 fixed free to rotate on the disk and on the plate 4. Thus a tilting of the plate 4 causes an angular displacement of the disk .
  • the indicator 300 comprises a rod 314 controlling the movement of the locking lever in opening 604 by the locking lever 315.
  • the lever 604 is blocked and can not release a closing maneuver if the switch is not completely in position d 'opening.
  • Manual actuation means 700, locking means 200, 600 are also provided.
  • These manual actuating means 700 are, particularly advantageously, unique for the two locking means 200, 600. These comprise a lever 702 shown in full line in the rest position.
  • lever 702 An embodiment of the lever 702 is shown from above on the figure 4E , the locking means in closing and opening are omitted for the sake of clarity.
  • the lever 702 is rotatably mounted between the mounting plates 2 and between the two locking means 200, 600.
  • the lever 702 has a first portion 703 intended to be on the outside of the mounting plates 2 and a second portion 704 intended to be inside the two mounting plates 2.
  • the first portion 703 extends parallel to the mounting plate 2 and has a first end 705 of manual operation and a second end 706 to cooperate with the opening locking means 600, to unlock manually.
  • the first end 705 is extended by the second portion 704, which extends substantially along the axis of rotation of the lever 702 and has a U-shaped radial projection 707 intended to cooperate with the closing locking means 200 , to unlock them manually.
  • the shape of the lever 702 makes it possible to interact on the two planes corresponding to the locking system in closing and opening.
  • the plate 4, the cam 102, the opening spring 402 with the integrated damping means 500 and the closing locking means 200 are arranged in the same plane and are arranged so as not to interfere with each other. with each other when moving.
  • control is very compact and very robust, and has a reduced number of parts.
  • FIG. 6A and 6B an exemplary embodiment of an apparatus comprising means for actuating the contactor allowing them to be mounted below the contactor and not on the side, as is customary in the apparatus of the state of the art, can be seen .
  • These operating means can advantageously be associated with the control according to the present invention.
  • the actuating means 800 comprise an intermediate bar 802 connected in rotationally movable manner at a first end 802.1 to a bar insulating 804 guided in translation along a Y axis by an insulating support column 806.
  • An upper end of the insulating rod 804 is connected to a pole of the contactor (not shown), and a displacement in translation of the insulating rod 804 causes displacement of the pole relative to another pole of the contactor, in a direction of approach or distance of the two poles and thus in a direction of closing or opening of the contactor.
  • guide sleeves 808 are also provided at an upper end 806.1 and at a lower end 806.2 of the column 806.
  • the intermediate bar 802 is rotatably mounted, a second end 802.2 opposite the first end 802.1, on a lever 810 which is mounted fixed in rotation on a control shaft 812.
  • the system formed by the intermediate bar 802 and the lever 810 forms a system of rods transforming a rotational movement of the shaft into a translation movement of the insulating rod.
  • the actuating means 800 are particularly adapted to the control C according to the present invention shown on the Figures 1A to 5 , the shaft 812 is the shaft 6, the lever 810 is formed by the lever 15 and the intermediate bar 802 is mounted free to rotate on the lever 15.
  • actuating means 800 make it possible to achieve a seal only at the lower part 814 of the apparatus and not on all the apparatus.
  • the actuating means 800 have the advantage of having few moving parts, these being also of reduced size.
  • the maneuvering means are then very compact and consume little energy.
  • the present operating means make it possible to avoid buckling of the insulating rod, which is caused by the compressive stresses applied by the devices of the state of the art. Indeed, the rotational movement of the shaft 812 is transformed in a simple manner in linear motion to be transmitted to the insulating rod 804.
  • an insulating rod 904 is mounted slidable in an insulating support column 906 and is guided by sleeves 908 at the lower and upper ends of the column 906.
  • the operating means 900 comprise a lever 902 fixedly mounted by a first end 902.1 rotated on a shaft 912 and a second end 902.2 movable in rotation on a lower end of the insulating rod 904.
  • the mounting of the lever 902 on the insulating rod is performed with clearance by means of an oblong slot 910 to avoid transverse stresses of the insulating rod 904.
  • the lever 902 is shown in two positions, a position 1 ', in which the contactor is open and a position II', in which the contactor is closed.
  • the operating means 900 have the advantage of having few moving parts, these being also of reduced size.
  • the maneuvering means are then very compact and consume little energy.
  • the operating means 900 also have the advantage of less stressing the insulating rod in compression.
  • the actuating means 900 are also particularly suitable for the control C according to the present invention shown in FIGS. Figures 1A to 5 , the shaft 912 is the main shaft 6, the lever 902 is formed by the lever 15 provided with an oblong slot at the free end 15.1 of the lever 15. On the Figure 6A control C is placed to the left of the operating means 900.
  • an insulating rod 1004 is mounted fit sliding in an insulating support column 1006 and is guided by sleeves 1010 at the lower and upper ends of the column 1006.
  • the actuating means comprise a lever 100 mounted rotatably by a first end 1002.1 on a shaft 1012.
  • the lever 1002 comprises a toothed angular sector 1002.3 meshing with a lower end 1004.1 the insulating rod 1004 provided with a corresponding toothing 1004.2.
  • a stop 1014 is provided at the lower end of the insulating rod 1004 in order to prevent the toothed sector from becoming more engaged with the toothed portion of the insulating rod.
  • the operating means 1000 have the advantage of having few moving parts, these being also of reduced size.
  • the maneuvering means are then very compact and consume little energy.
  • the operating means 900 also have the advantage of less stressing the insulating rod in compression.
  • the operating means 1000 are also particularly adapted to the control C according to the present invention shown in the Figures 1A to 5 , the shaft 1012 is the main shaft 6, the lever 1002 is formed by the lever 15 whose contour comprises a toothed sector. On the Figure 6A the control C is placed to the left of the operating means 1000.
  • the toothed sector can advantageously be made directly on the lever 15.
  • the movement is guided in the disconnector by a rotary shaft 1102 constructed in the insulating support column of the disconnector as shown schematically on the figure 9 .
  • the shaft 1102 crosses substantially perpendicularly a wall of the column 1103 in a sealed manner and is rotatable about its axis.
  • the shaft 1102 is provided with two levers 1104, 1106 at each of its ends.
  • the lever 1104 is mounted in the column 1103 and is mechanically connected to the insulating rod 1108.
  • the lever 1106, called the external lever is arranged outside the column and is mechanically connected to a force transmission rod. connected to the lever 15.
  • the outer lever 1106 converts the translation of the rod 14 into a rotational movement of the shaft 1102.
  • the inner lever 1104 transforms the rotation of the shaft 1102 into a translation of the insulating rod 1108.
  • sealing is more easily achieved, since it is performed on a rotary shaft and not on a sliding rod.
  • the main shaft 6 is coaxial with the shaft 1102 and is rotationally secured to it, for example by means of a sleeve.
  • a rotation of the main shaft causes a rotation of the shaft 1102, and a sliding of the moving contact.
  • the switch is assumed to be in the closed position with the loaded springs 402 and 114 in the position shown on the figure 1 .
  • the electrical control means 212 are activated causing the movement of the puck 210, the closing locking means 200 are then deactivated, releasing the plate 4 which switches clockwise under the action of the opening spring 402.
  • the electrical control means 612 When a close command is given, the electrical control means 612 are activated, causing the movement of the puck and the pivoting release of the lever 604.
  • the driving disc 116 can then rotate under the action of the closing spring 114 , driving with it the closing cam 102.
  • the closing cam 102 then comes into contact with the plate 4 at the top 12.4, causing it to tilt in the counterclockwise direction.
  • the main shaft 6 is rotated, causing rotation of the lever 15 which moves up the rod 14, closing the switch.
  • Counterclockwise tilting also causes loading of the opening spring 402, which is then ready for a new opening phase.
  • the closing locking means 200 are also active again.
  • the loading of the closing spring 114 then takes place.
  • the rotational inertia of the drive disk 116 is used to partially load the closing spring 114.
  • the free wheel becomes blocking and the motor 118 rotates the drive disk 116 completing the tensioning of the closing spring until the top dead center of the closing spring 114 is exceeded.
  • the indicator 134 informs the load of the closing spring 114 the motor 118 is stopped by switching the switch 124 and the closing spring 114 continues the rotation of the driving disk 116.
  • the locking in opening is then carried out automatically, when the roller 117 reaches the support on the locking system in opening 600.
  • the electrical control means 212 When an opening command is given, the electrical control means 212 are activated, causing the movement of the puck 210 and the pivotal release of the lever 204, then of the lever 202.
  • the plate 4 can then turn clockwise under the action of the opening spring 402, driving with it the main shaft 6 and the lever 15 (example shown in FIG. figure 9 ), the transmission rod of force 14 is then moved downwards, causing the opening of the switch.
  • the opening and closing of the switch can also be manually controlled by operating the lever 702 as previously described.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electromagnets (AREA)

Claims (21)

  1. Steuerung für einen Kommutator/(Um-) Schalter einer elektrischen Apparatur für mittlere oder hohe Spannungen, die Steuerung umfassend: eine Platine (6), die auf einer Hauptwelle befestigt ist, die drehbeweglich auf wenigstens einer ersten Montageplatte (2) angeordnet ist, wobei diese Hauptwelle (6) rechtwinklig zu der ersten Montageplatte und die Platine rechtwinklig zu der Hauptwelle (6) gerichtet sind, die Steuerung des weiteren umfassend:
    - einen Drehantrieb (100) zum Schließen des Kommutator/(Um-) Schalters mit einem Mittel zur Kraftübertragung (102),
    - einen Stellantrieb (400) zum Öffnen des Kommutators/Schalters,
    - Mittel (200) zur Verriegelung des Kommutators/Schalters in der Schließstellung, die auf die Platine (4) eine Kraft zur Verriegelung der Platine (4) in einem Schließzustand des Kommutator/Schalters ausüben können,
    dadurch gekennzeichnet, daß die Hauptwelle (6) mit dem Kommutator/Schalter verbunden ist, dessen Öffnung und Schließung durch eine Drehung der Hauptwelle (6) hervorgerufen wird, wobei die Hauptwelle (6) durch eine Verschwenkung der genannten Platine (4) verdreht werden kann, daß die genannte Platine mit dem Stellantrieb (400) für die Schließung verbunden ist und der Drehantrieb (100) zur Schließung mit der Platine in Berührungskontakt gelangen kann, um sie zu einer Verschwenkung im Sinne einer Schließung des Kommutator/Schalters zu veranlassen, und wobei die Verriegelungsmittel für die Schließstellung in Berührungskontakt mit der Platine gelangen können, um den Kommutator/Schalter geschlossen zu halten;
    - wobei die Platine, der Öffnungsstellantrieb (400), die Mittel (100) zur Kraftübertragung an den Schließ-Stellantrieb und die Mittel zur Verriegelung im Schließzustand (200) so angeordnet sind, daß die durch den Öffnungs-Stellantrieb (400), die Kraftübertragungsmittel des Schließantriebs (100) und die Mittel zur Verriegelung im Schließzustand (200) ausgeübten Kräfte im wesentlichen in einer als erste Ebene bezeichneten Ebene der Platine liegen.
  2. Steuerung nach Anspruch 1, bei welcher das Kraft-Übertragungsmittel (102) einen drehstarr auf einer zur Hauptwelle (6) parallelen Schließwelle (104) gelagerten Nocken umfasst, der bestimmungsgemäß mit einer zweiten Zone der Platine in Kontakt gelangt, um auf die auf der Hauptwelle (6) befestigte Platine eine Schwenkkraft in einem ersten Drehsinn auszuüben und die Schließung des Kommutator/Schalters hervorzurufen, wobei der genannte Nocken (102) drehstarr mit einer Mitnahmescheibe (116) verbunden ist, die zur Drehung von Mitteln (114) zur Speicherung elastischer Energie mitgenommen wird, welche eine Schließfeder (114) umfassen, wobei die genannte Schließfeder in einer zur ersten Ebene im wesentlichen parallelen Ebene angeordnet ist und mit einem ersten Ende auf der ersten Montageebene (2) und mit einem zweiten Ende auf der Mitnahmescheibe (116) drehbeweglich gelagert ist.
  3. Steuerung nach Anspruch 2, welche Mittel zur Verriegelung im Öffnungszustand (600) umfaßt, die im Betätigungszustand der Schließfeder (112) eine Immobilisierungswirkung auf die Mitnahmescheibe (116) ausüben können.
  4. Steuerung nach dem vorhergehenden Anspruch, unfassend Mittel zur Beaufschlagung der Schließfeder, wobei die Mittel zur Beaufschlagung der Schließfeder einen von einem Elektromotor angetriebenen Ritzelsatz (120) umfassen, von dem ein Ritzel mit Zähnen am Umfang der Mitnahmescheibe in Eingriff steht, und bei welcher die Mitnahmescheibe, das mit der Mitnahnmescheibe kämmende Ritzel und die Mittel zur Verriegelung im Öffnungszustand (600) im wesentlichen in einer zur ersten Ebene parallelen dritten Ebene angeordnet sind.
  5. Steuerung nach einem der Ansprüche 2 bis 4, bei welcher die Schließfeder (114) in Überlappung bezüglich der Platine (4) steht.
  6. Steuerung nach einem der Ansprüche 2 bis 5, bei welcher der Öffnungsstellantrieb (400) eine Öffnungsfeder (402) umfaßt, welche die Platine (4) in einem zweiten, zum ersten Drehsinn entgegengesetzten Drehsinn antreiben kann, um das Öffnen des Kommutators/Schalters zu veranlassen, wobei die Öffnungsfeder (402) auf derselben Seite der Montageplatte (2) wie die Platine (4) angeordnet ist, die Schließfeder (114) auf einer anderen Seite der ersten Montageplatte (2) angeordnet ist, die Öffnungsfeder mit einem ersten Ende drehbeweglich auf der ersten Montageplatte auf derselbe Seite wie das erste Ende der Schließfeder bezüglich der Platine angeordnet ist und mit einem zweiten Ende drehbeweglich auf der Platine montiert ist,
  7. Steuerung nach Anspruch 6, bei welcher die Schließfeder (114) die Öffnungsfeder (402) kreuzt.
  8. Steuerung nach Anspruch 6 oder 7, bei welcher sich die Schließwelle (104) entgegengesetzt zur Öffnungsfeder (402) bezüglich einer zur Achse der Öffnungsfeder (402) im wesentlichen parallelen und mit der Hauptwelle (6) schneidenden Achse befindet.
  9. Steuerung nach einem der Ansprüche 2 bis 8, bei welcher die Mittel zur Verriegelung in der Schließstellung (200) mit einem drehbeweglich auf der Platine (4) angeordneten Betätigungshebel (20) zusammenwirken.
  10. Steuerung nach einem der Ansprüche 2 bis 9 in Verbindung mit Anspruch 3, welche Handbetätigungsmittel (700) aufweist, die alternativ die Mittel zur Verriegelung in der Öffnungsstellung (600) und die Mittel zur Verriegelung in der Schließstellung (200) freisetzen bzw. auslösen können, um die Schließung bzw. die Öffnung des Kommutators/Schalters zu gestatten, und bei welcher die genannten Handbetätigungsmittel (700)
    einen drehbeweglich montierten Hebel (702) auf der ersten Montageplatte (2) umfassen, der zwischen den Mitteln zur Verriegelung in der Schießstellung und den Mitteln zur Verriegelung in der Öffnungsstellung angeordnet ist.
  11. Steuerung nach dem vorhergehenden Anspruch, bei welcher der Hebel im Bereich eines ersten Endes (705) betätigt werden kann und bestimmungsgemäß an einem Ende in Berührungskontakt mit einem Hebel (606) der Mittel zur Verriegelung im Öffnungszustand (600) und an einem anderen Ende in Berührungskontakt mit einem Hebel (206) der Mittel zur Verriegelung im Schließzustand (200) gelangt, um diese Hebel zu verschwenken und die Freisetzung bzw. Auslösung der Schließenergie bzw. der Öffnungsenergie zu veranlassen.
  12. Steuerung nach dem vorhergehenden Anspruch, bei welcher der genannte Hebel (702) einen ersten. Teil (703) und einen zweiten Teil (704) umfaßt, von welchen der erste Teil ein zweites Ende (706) trägt, das mit dem Hebel (606) zusammenwirken kann, der die Mittel zur Verriegelung im Öffnungszustand (600) deaktivieren kann, und von welchen der zweite Teil einen radialen Vorsprung bzw. eine Auskragung (707) umfasst, die mit dem Hebel (206) zusammenwirken kann, welcher die Mittel zur Verriegelung im Schließzustand (200) deaktivieren kann.
  13. Steuerung nach einem der vorhergehenden Ansprüche in Verbindung mit Anspruch 3, bei welche die Mittel zur Verriegelung im Schließzustand (200) und die Mittel zur Verriegelung im Öffnungszustand (600) beidseits der ersten Montageplatte (2) angeordnet sind.
  14. Steuerung nach einem der vorhergehenden Ansprüche, bei welcher die Platine (4) auf wenigstens zwei parallele Ebenen aufgeteilt ist.
  15. Elektrische Apparatur bzw. Gerätschaft für muittlere und hohe Spannungen, welche einen Kommutator/Schalter, der mit einem translatorisch beweglichen Kontakt und mit einem festen Kontakt versehen ist, sowie eine Steuerung gemäß einem der hervorgehenden Ansprüche umfaßt.
  16. Apparatur bzw. Gerätschaft nach dem vorhergehenden Anspruch, bei welcher der Kommutator/Schalter eine um ihre Achse drehbewegliche Welle und einen drehstarr mit der Welle verbundenen Hebel umfaßt, wobei der Hebel mit dem translatorisch beweglichen Kontakt so verbunden ist, daß eine Drehung der Welle um ihre Achse eine translatorische Verschiebung des beweglichen Kontakts hervorruft, und wobei die Hauptwelle (6) und die Kommutator/Schalter - Welle koaxial und drehstarr miteinander verbunden sind.
  17. Apparatur bzw. Gerätschaft nach Anspruch 15, bei welcher ein Hebel mit der Hauptwelle (6) auf dem Niveau bzw. im Bereich ihres Vorsprungs über eine der Montageplatten drehstarr verbunden ist, wobei der Hebel mit dem beweglichen Kontakt verbunden ist.
  18. Elektrische Apparatur bzw. Gerätschaft nach Anspruch 17, welche ein Pleuelsystem (800) zur Verbindung des Hebels (15) mit dem translatorisch beweglichen Kontakt des Kommutators/Schalters umfaßt.
  19. Apparatur bzw. Gerätschaft nach Anspruch 17, bei welcher der Hebel (15) mit dem translatorisch beweglichen Kontakt über ein translatorisch bewegliches Teil (802) verbunden ist.
  20. Elektrische Apparatur bzw. Gerätschaft nach Anspruch 17, bei welcher der Hebel (15) eine längliche Ausnehmung (910) aufweist, die dazu bestimmt ist, mit Spiel ein Ende eines starr mit dem translatorisch beweglichen Pol des Kommutators/Schalters verbundenen Elements aufzunehmen.
  21. Elektrische Apparatur bzw. Gerätschaft nach Anspruch 17, bei welcher der Hebel (15) ein Zahnsegment (1002) aufweist, das zum Eingriff mit einem starr mit dem translatorisch beweglichen Pol des Kommutators/Schalters verbundenen gezahnten Teils bestimmt ist.
EP08171622A 2007-12-17 2008-12-15 Kompakte, robuste Steuerung für elektrische Mittel- und Hochspannungsgeräte Active EP2073228B1 (de)

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FR0759902A FR2925210B1 (fr) 2007-12-17 2007-12-17 Commande compacte pour appareillage electrique moyennes et hautes tensions

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EP2073228B1 true EP2073228B1 (de) 2010-12-22

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US (1) US7671292B2 (de)
EP (1) EP2073228B1 (de)
CN (1) CN101465220B (de)
AT (1) ATE492897T1 (de)
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FR (1) FR2925210B1 (de)

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Publication number Publication date
US20090173611A1 (en) 2009-07-09
CN101465220A (zh) 2009-06-24
FR2925210B1 (fr) 2010-01-15
EP2073228A1 (de) 2009-06-24
DE602008004071D1 (de) 2011-02-03
CN101465220B (zh) 2013-10-16
US7671292B2 (en) 2010-03-02
FR2925210A1 (fr) 2009-06-19
ATE492897T1 (de) 2011-01-15

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