EP3440684A1 - Élément de couplage pour un appareil de commutation électrique comportant un élément à masse d'impulsion - Google Patents

Élément de couplage pour un appareil de commutation électrique comportant un élément à masse d'impulsion

Info

Publication number
EP3440684A1
EP3440684A1 EP17714668.5A EP17714668A EP3440684A1 EP 3440684 A1 EP3440684 A1 EP 3440684A1 EP 17714668 A EP17714668 A EP 17714668A EP 3440684 A1 EP3440684 A1 EP 3440684A1
Authority
EP
European Patent Office
Prior art keywords
coupling member
member according
winding body
push rod
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17714668.5A
Other languages
German (de)
English (en)
Other versions
EP3440684B1 (fr
Inventor
Georg Bachmaier
Gerit Ebelsberger
Matthias Gerlich
Sylvio Kosse
Wolfgang Zöls
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3440684A1 publication Critical patent/EP3440684A1/fr
Application granted granted Critical
Publication of EP3440684B1 publication Critical patent/EP3440684B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • the object is achieved in a coupling element for an electrical switching device with the features of patent ⁇ claim 1.
  • the inventive coupling element for elekt ⁇ cal switching device has two switching contacts, a first switching contact and a second switching contact for opening and closing an electrical contact.
  • the first switching contact is connected to a push rod, which is mounted translationally movable and which is in direct connection with an actuator. This actuator causes a
  • the He ⁇ invention is characterized in that a pulse mass element is seen ⁇ before, which is coupled by a spring element with the coupling ⁇ member.
  • the advantage of the invention is that the energy which is introduced when closing the two contacts, and which is necessary for applying a pressing force of the first switching contact to the second switching contact in order to establish a secure connection of the contacts, not in a bouncing between the both contacts is discharged. Rather, the excess energy is transferred by impulse transmission in the pulse ground element.
  • the spring element likewise provided here does not necessarily have to be configured in the form of a conventional spring, but it can also be a very rigid connection between the push rod and the
  • the couplers ⁇ lung membered acting analog of a Newtonian pendulum, in which a plurality of balls are movably supported by ropes and from directly touching it.
  • An outer sphere that, with a certain amount of kinetic energy, touches the remaining one
  • Balls are beaten, resulting in a transfer of momentum over the other touching balls, with the last ball in the row with the same almost lossless transmitted pulse oscillates to the outside. This physical phenomenon is technically used at this point in the coupling element to control the energy or momentum of the
  • the pulse mass element is arranged centrally on the push rod with respect to this translationally movable.
  • the spring element is arranged concentrically to the push rod in the form of a spiral spring. In this way, the pulse that occurs when closing the contacts, particularly favorable transferred to the pulse ground element. It is again particularly advantageous if on the push rod also a stop member is arranged concentrically to this, the spring ⁇ element is arranged in the form of a pressure-loaded coil spring between the stop member and the pulse ground element.
  • the actuator is in the form of a Rota ⁇ tion body and the push rod is in the form ei ⁇ nes rod-shaped winding body. In the process, this winding body extends through the rotary body.
  • the rotary body comprises two sides, one of which faces the one end of the winding body and the other the other end of the winding body, wherein the Rotationskör ⁇ is rotatably supported with respect to the winding body. Both sides of the rotating body are connected with at least one chord, for example, designed in the form of a Be ⁇ les, a wire rope or aramid fiber, the re ⁇ rum is disposed to another end of the winding body.
  • the actuator leads to a particularly pressure-free movement of the push rod or the winding body, so that even by this measure bouncing when opening and especially during
  • the Rotati ⁇ ons stresses is coupled to at least two springs in such a way that in both directions of rotation always a force acts on the rotating body, wherein a lock is provided, the end of the translational movement of the winding body, the rotating body locked.
  • the actuator described above in the form of a rotational body can also be moved by an electric drive.
  • biased springs acting as a resonator and opposing directions biasing the rotating body are used as the drive. In this way, a minimum of energy in the rotational and translational movements is lost, which can be re-introduced into the system after a variety of switching operations by a retightening of the springs.
  • a freewheel is provided, which is coupled to the rotary body and which allows only one direction of rotation of the rotary body.
  • This freewheel is configured for example in the form of a corresponding Ku ⁇ gellagers, which is rotatable only in one direction, and it serves that despite acting spring forces on the rotary body in an end position of the winding body in principle lent upon triggering of a corresponding signal only one direction of movement Rotation body and thus only one direction of movement of the winding body is possible.
  • two freewheels are present, one of which is activated and in the end positions of the bobbin there is a switchover of the activation between the two freewheels.
  • the lock which locks the rotary body in the position in which there is an end position of the translatory movement of the winding body, is preferably released by a corresponding actuator.
  • the actuator can respond to an appropriate signal, for example a Steuersig ⁇ nal, which calls for opening or closing of the switch contact on ⁇ .
  • an on ⁇ pressing force of the first contact to the second contact is in the end position of the wound body, in which the contacts are closed, by the spring force acting on the rotation body, out ⁇ exerts.
  • the first switching contact with an offset is applied to force, by means of which the desired contact ⁇ force of the electrodes can be determined.
  • the momentum mass element is connected to the rotation body in such a way that it is rotationally fixed with respect to the rotation body, that is, it is forcibly controlled along with it in the rotational movements, wherein the momentum mass element along the
  • translational movement direction of the winding body with respect to the rotational body is designed to be movable.
  • the pulse introduced into the pulse ground element can be picked up by a movement thereof.
  • FIG. 1 is a schematic representation of a coupling member with two contacts, a push rod, an actuator and a pulse mass element
  • Fig. 2 is a coupling member with a rotary body and a
  • Fig. 3 is a coupling member analogous to FIG. 2 with half-opened
  • Fig. 4 is a coupling member analogous to Figures 2 and 3 with ge ⁇ closed contacts.
  • the coupling member 2 comprises an actuator 15, which bring about a push rod 9 comprises a first contact 4 on a second contact 6 by a translational movement on ⁇ can.
  • the movement of the push rod 9 is shown by the opposite arrows.
  • the actuator 15 can be configured in any desired manner, for example hydraulically or by an electric drive. A preferred embodiment of the actuator 15 will be explained using the examples of FIGS. 2 to 4.
  • ⁇ tend, introduced a pulse, which in turn leads in a conventional system to a bouncing between the contacts 4 and 6 in a closing operation.
  • the bouncing is minimized according to the coupling member 2 of Figure 1 by a pulse ⁇ mass element 3 by the pulse ground element 3, the pulse, which arises when closing the contacts 4 and 6, receives.
  • a spring element 5 is shown schematically. represents, which initiates the pulse in the pulse ground element 3.
  • the spring element 5 can in this case be made very stiff, which is why this spring is here to be regarded only as sche ⁇ matically at this point.
  • the arrow F K illustrates the contact force acting on the push rod 9 and on the con ⁇ tact 4 and thus also in a closed state of the contacts 4 and 6 on the contact 6.
  • FIGS. 1 to 3 show a variant of a coupling element 2 according to the invention.
  • the coupling element 2 actuates a contact system consisting of the disk-shaped switching contacts 4 and 6, the switching contact 4 being moved relative to the switching contact 6 for this purpose.
  • a circuit is concluded and a current flow via the below-explained electrically conductive rod-shaped bobbin 8 and the contact system of the switching contacts 4 and 6 causes.
  • This current flow can be interrupted again 4 and 6, by opening the contact system via the off ⁇ each other moving the two switching contacts.
  • the switching contact 4 is attached to a lower end of the bobbin 8, which is hereinafter also be ⁇ as a winding rod.
  • the winding body 3 is linear, ie
  • a rotary body 10 is rotatably supported, i. the rotating body can rotate on the winding body.
  • the rotary body 8 has a bore through which the rod-shaped winding body 8 protrudes.
  • a bearing 13 is provided between the winding body 8 and the rotational body 10, so that the rotation of the rotational body 10 proceeds as smoothly as possible and with little loss.
  • the rotary body 8 comprises in this example two spaced-apart disks or sides 11 and 12. Between these two sides 11 and 12 of the rotary body is schematically illustrated in this embodiment, the bearing 13, which is intended to illustrate that the rotary body 10 is rotatably mounted on the winding body 8.
  • a position of the coupling member 2 is provided ⁇ , wherein the contacts 4 and 6 are opened in their marglich mögli ⁇ chen distance from each other. This distance is referred to the end position E with respect to the position of the contact 4.
  • FIG. 2 shows a middle position between the end position E and the end position E illustrated in FIG. 3, in which the contacts 4 and 6 are closed and a flow of current can take place via the contacts.
  • the rotary body 10 with - in this example - two springs 18 is coupled.
  • the springs 18 are designed for tensile loading and are fixed at one end to the rotary body 10 and fixed with another end to a fixed point 24 outside of the coupling member 2.
  • a lock 20 seen ⁇ before which in turn is in communication with an actuator 22.
  • the lock 20 is shown very schematically in this example by a rod, the lock 20 may be configured in ⁇ example, in the form of two intermeshing sprockets, which is not shown here for better clarity hal ⁇ ber explicitly.
  • the coupling member comprises tendons 16 and 16 which are between the rotary body 10 and the winding body 8, preferably provided with a certain bias, are attached.
  • the tendons 16 are each accommodated on the winding body 8 at ⁇ and fasten ⁇ saturated with a second attachment point far out as possible on the disks 11 and 12 respectively at the upper and the lower sides 11 and 12 of the rotating body 10 degrees.
  • Tendons here are generally flexible structures, such as ropes, wire ropes or aramid fibers. stood on the one hand have a high modulus of elasticity in order to achieve the strongest possible bias between the bobbin 8 and the rotating body 10.
  • the tendons 16 .lamda Are wound around the winding body by several revolutions in the lower region between the side 12 of the rotational body 10 and the switching contact 4.
  • the tendons 16 in the position of the end position E according to FIG. 1 are not twisted. If one opens the lock 20, for example, caused ⁇ by a signal which is forwarded to the actuator 22, the bias of the springs 18 and 18 are the total configured so that there is a resonator, generates a rotational movement of the rotating body, by the tendons 16 ⁇ roll in the lower region of the bobbin 8 and in turn to the tendons 16 in the upper Be ⁇ rich, above the rotation body 10, turn on the bobbin. This position is shown in FIG.
  • the springs 18 and 18 are also substantially in an equilibrium position ⁇ , wherein also here a bias of the springs 18 and 18 ⁇ is present.
  • This equilibrium ⁇ weight position according to Figure 2 is overcome due to the effect of the two springs as a resonator and is shown in Figure 3, the position of the end position ⁇ ⁇ , in which the two switching contacts 4 and 6 are closed.
  • the translational or linear movement of the bobbin 8 can be carried out in both directions.
  • the closing process described here can be described reversibly starting from FIG. 3 via the position of FIG. 2 back to FIG. 1, wherein a translatory movement of the wound body 8 along its longitudinal axis 14 in the direction of the end position E is completed.
  • the rotational movement of the rotary body 10 is designed in the manner ⁇ that the rotational body in each case performs a rotation of about 90 ° in each direction in an opening and a closing operation.
  • the switching time ie the time it takes the coupling member to move from the end position ⁇ ⁇ in the end position E and vice versa, by the stiffness ⁇ speed of the springs used 18 and by the inertia, ie the mass of the rotating body 10, the also acts as a flywheel, depending.
  • the angular velocity ⁇ of the rotational body 10 is directly proportional to the root of the ratio of spring stiffness, ie the spring constant K and the mass m of the rotational body 10, by way of example from ⁇ expressed by the equation ⁇ ⁇ (K / m) ° ' 5 ,
  • the energy of the rotation body is adjusted so that the desired ⁇ , ie the desired angle speed and the desired switching time for the respec ⁇ gene switching operation results, with about 95% of the total energy of the system is included in the switching process. Due to the very low-loss operating described switching system or coupling element is lost in an exemplary switching operation about 1.5 J in the system of energy. In a conventional switching operation with a conventional drive is lost at the same power and at a comparable size of the coupling element, the 20- to 30-fold of energy per switching operation. This means that this energy is lost when hitting the two switching contacts 4 and 6, which leads to this energy that
  • This bouncing process is extremely undesirable when switching the high-voltage system, since it can not provide uniform and rapid contact build-up.
  • this bouncing process is reduced to a minimum.
  • the system of the coupling member 2 such low loss scarf ⁇ tet, it is possible to realize a plurality of switching operations at a corresponding bias of the springs 18 and 18 ⁇ .
  • the system is preferably in the way is ⁇ sets that as many switching operations are performed, as would usually occur between two already taking place maintenance intervals of the switchgear.
  • biasing the springs 18 and 18 ⁇ by over-rotation of the rotating body 8 (flywheel) take place.
  • Can pull on ⁇ operate as if the mecha ⁇ American pm or by means of an electric motor, for example manually.
  • two freewheels are arranged whose function consists in a rotational movement of the rotating body 10 only allow in one direction, namely in the direction which is the only desired direction with respect to the respective end position E or ⁇ ⁇ .
  • These freewheels which are not explicitly shown here, work hand in hand with the locking device 20, so that when the respective catch 20 is placed, for example, in the end position E only in the freewheel, the translational movement due to the corresponding rotation along the axis 14 of the winding body 8 in the direction of the lower end position, ie the closed end position E permits.
  • a stop member provided ⁇ see 26 on which the coil spring which acts on pressure is applied.
  • the stop member 26 is fixedly connected to the push rod 9 and transmits at a plot of force, F K the resulting pulse via the coil spring 7 to the pulse mass element 3.
  • the pulse mass member 3 is re ⁇ rum connected to the rotary body. 8
  • Form of the pulse mass element 3 is located on the side 11 of the rotating body 8, it is connected to him so that in a rotational movement R this is performed by the pulse ground element 3 with.
  • the pulse ground element 3 is rotatably coupled to the rotary body 8. In the direction of the axis 14, ie in the direction of the translational movement of the winding body or the push rod, however, a limited possibility of movement between the pulse mass ⁇ element 3 and the rotary body 8 is given.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un élément de couplage (2) pour un appareil de commutation électrique, l'élément de couplage (2) comprenant un premier contact de commutation (4) servant à ouvrir et à fermer un contact électrique comportant un deuxième contact de commutation (6), le premier contact de commutation (4) étant raccordé à une tige de poussée (9) qui est montée de manière à effectuer une translation et qui est en liaison fonctionnelle avec un actionneur (15) provoquant un mouvement de translation de la tige de poussée (9). L'invention est caractérisée en ce qu'un élément à masse d'impulsion (3) est couplé à l'élément de couplage (2) par l'intermédiaire d'un élément ressort (5).
EP17714668.5A 2016-05-13 2017-03-22 Élément de couplage pour un commutateur électrique avec un élément de la masse d'impulsion Active EP3440684B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016208270.1A DE102016208270A1 (de) 2016-05-13 2016-05-13 Kopplungsglied für ein elektrisches Schaltgerät mit Impulsmasseelement
PCT/EP2017/056818 WO2017194236A1 (fr) 2016-05-13 2017-03-22 Élément de couplage pour un appareil de commutation électrique comportant un élément à masse d'impulsion

Publications (2)

Publication Number Publication Date
EP3440684A1 true EP3440684A1 (fr) 2019-02-13
EP3440684B1 EP3440684B1 (fr) 2022-10-26

Family

ID=58461280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17714668.5A Active EP3440684B1 (fr) 2016-05-13 2017-03-22 Élément de couplage pour un commutateur électrique avec un élément de la masse d'impulsion

Country Status (7)

Country Link
US (1) US10720285B2 (fr)
EP (1) EP3440684B1 (fr)
KR (1) KR102107357B1 (fr)
CN (1) CN109313994B (fr)
CA (1) CA3023796C (fr)
DE (1) DE102016208270A1 (fr)
WO (1) WO2017194236A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016208270A1 (de) 2016-05-13 2017-11-16 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät mit Impulsmasseelement
DE102018212953A1 (de) * 2018-08-02 2020-02-06 Siemens Aktiengesellschaft Schließkontaktsystem
CN110556265A (zh) * 2019-09-06 2019-12-10 华东交通大学 一种适用于容性负载投切的真空灭弧室的旋转触头结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378622B (de) * 1983-04-25 1985-09-10 Naimer H L Elektrisches schaltgeraet
JP3441360B2 (ja) * 1997-03-25 2003-09-02 株式会社東芝 しゃ断器の操作装置
JP2000268683A (ja) * 1999-01-14 2000-09-29 Toshiba Corp 開閉器の操作装置
DE10009499C1 (de) * 2000-02-29 2001-09-27 Siemens Ag Hilfsbaugruppe für ein elektromechanisches Schaltgerät und hiermit korrespondierendes elektromechanisches Schaltgerät
DE102006012431B4 (de) * 2006-03-17 2008-07-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Aktor
EP2312606B1 (fr) 2009-10-14 2013-02-27 ABB Technology AG Actionneur magnétique bistable pour un disjoncteur de tension moyenne
US8680956B2 (en) 2009-10-29 2014-03-25 Mitsubishi Electric Corporation Electromagnet device and switch device using electromagnet device
DE102014102875B4 (de) * 2014-03-05 2016-05-25 Maschinenfabrik Reinhausen Gmbh Betätigungsvorrichtung zum Betätigen einer Vakuumschaltröhre, Schaltvorrichtung mit einer solchen Betätigungsvorrichtung sowie Laststufenschalter mit einer solchen Schaltvorrichtung
DE102014219772A1 (de) * 2014-09-30 2016-03-31 Siemens Aktiengesellschaft Vakuumschaltröhre
CN104299813A (zh) * 2014-10-28 2015-01-21 大全集团有限公司 一种电磁斥力机构开断器
DE102016208270A1 (de) 2016-05-13 2017-11-16 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät mit Impulsmasseelement

Also Published As

Publication number Publication date
KR20190006541A (ko) 2019-01-18
CN109313994A (zh) 2019-02-05
CA3023796A1 (fr) 2017-11-16
US20190148088A1 (en) 2019-05-16
WO2017194236A1 (fr) 2017-11-16
DE102016208270A1 (de) 2017-11-16
EP3440684B1 (fr) 2022-10-26
US10720285B2 (en) 2020-07-21
KR102107357B1 (ko) 2020-05-07
CN109313994B (zh) 2020-04-03
CA3023796C (fr) 2021-04-13

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