EP3208819B1 - Elektrische schaltanordnung - Google Patents

Elektrische schaltanordnung Download PDF

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Publication number
EP3208819B1
EP3208819B1 EP17151563.8A EP17151563A EP3208819B1 EP 3208819 B1 EP3208819 B1 EP 3208819B1 EP 17151563 A EP17151563 A EP 17151563A EP 3208819 B1 EP3208819 B1 EP 3208819B1
Authority
EP
European Patent Office
Prior art keywords
arrangement according
housing
switching arrangement
electrical switching
locking
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
EP17151563.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3208819A1 (de
Inventor
Chen-Xiang Chao
Markus Sulitze
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 Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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 Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP3208819A1 publication Critical patent/EP3208819A1/de
Application granted granted Critical
Publication of EP3208819B1 publication Critical patent/EP3208819B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/285—Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • 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
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing

Definitions

  • An electrical circuit arrangement is for example from the patent DE 103 17 735 B3 famous.
  • There an electrical switching arrangement is described which has a first and a second switching contact piece.
  • the switching contact pieces can be moved relative to one another, a kinematic chain being used to couple a movement to one of the switching contact pieces.
  • the kinematic chain there has an electrically insulating handle, via which a movement can be transmitted to one of the switching contact pieces with the interposition of a cylindrical plate.
  • a bolt is provided as the locking element, which bolt completely penetrates the cylindrical plate and, depending on the position of the cylindrical plate, can be brought into engagement with stationary recesses.
  • the locking pin there can be inserted into the cylindrical plate in a switched-on position as well as in a switched-off position, which also enables the relative position of the first and second switch contact pieces to be secured in a switched-on position or a switched-off position. To move the switch contact piece, the locking pin must be completely removed from the cylindrical plate.
  • the known electrical switching arrangement has a robust locking device to two relative positions between the first and to secure the second switch contact piece.
  • actuation or operation of the locking device has proven to be relatively difficult, since operation of the electrically insulating handle and removal or insertion of the locking bolt there must be coordinated independently by the respective operator. Accordingly, situations arise during switching of the known electrical switching arrangement in which a certain switching position of the switching contact pieces is to be secured relative to one another, but the time of securing depends on a coordination of the operation of the handle and the locking bolt.
  • only two predetermined relative positions of the switching contact pieces can be secured by means of the locking device.
  • From the DE 41 42 548 A1 shows a drive for a circuit breaker.
  • the disconnector has a blocking disk which is attached to a drive shaft, it being possible to block it in an on or off position.
  • the object of the invention is thus to configure an electrical switching arrangement of the type mentioned at the outset in such a way that simplified and safer operation of the locking device is made possible.
  • this object is achieved in an electrical switching arrangement of the type mentioned in that the locking element, when one and the same switching state of the switching contact pieces is present, secures the relative position of the switching contact pieces in the switched-on state and / or in the switched-off state of the switching contact pieces, securing at least one machine element of the kinematic chain that is to be blocked locks in different positions.
  • An electrical switching arrangement is used to switch a current path.
  • switching contact pieces that can be moved relative to one another are used, for example.
  • at least one of the switching contact pieces is connected to a kinematic chain.
  • the kinematic chain connects at least one of the switching contact pieces to a drive device in order to generate a movement.
  • the drive device can be part of the kinematic chain.
  • An electrical switching arrangement can, for example, be a disconnector, such as can be used, for example, in a discharge current path of a surge arrester.
  • a leakage current path has a variable impedance Control element with, in particular, non-linear characteristics.
  • the discharge current path connects a phase conductor to be protected with earth potential, it being possible for the discharge current path to be switched through or interrupted as a function of a voltage drop across the variable-impedance control element.
  • the phase conductor can be protected by the surge arrester.
  • the phase conductor or its electrical insulation can be protected from damage by overvoltages.
  • Phase conductors can, for example, be part of high-voltage devices such as B. transformers, switchgear, etc. If a limit voltage is exceeded, the electrical insulation of the phase conductor may breakdown or be overstressed. Especially in the case of non-self-healing isolations, such as B. solid insulation, this can lead to irreparable damage to the electrical insulation.
  • variable-impedance control element can have a rated voltage.
  • the rated voltage of the variable-impedance control element can be designed to correspond to the limit voltage of the phase conductor, so that if the limit voltage on the phase conductor is exceeded, the variable-impedance control element has a low-impedance behavior, whereas if the limit voltage is undershot, the variable-impedance control element has a high-impedance behavior.
  • a voltage limitation which can be achieved by a surge arrester arrangement, can in particular protect electrical insulation of the phase conductor.
  • a varistor for example, can be used as a variable-impedance control element.
  • a varistor is a non-linear resistor that changes its impedance as a function of an applied voltage.
  • Varistors can be implemented as semiconductors, for example, as required. It can be provided that metal oxides are used to form a varistor can be used. In particular, zinc oxide varistors have proven to be powerful.
  • To increase the load capacity for example, several blocks of zinc oxide elements can be clamped together so that the dielectric strength of the varistor is increased.
  • impedance-variable control elements for example several columns of zinc oxide elements stacked on top of one another, can be connected electrically in parallel.
  • an electrical circuit arrangement in the leakage current path i. H. are preferably used in series with a variable-impedance control element.
  • the leakage current path can be galvanically interrupted by means of the switching arrangement, so that the protective effect of the variable-impedance control element is canceled.
  • the electrical switching arrangement can be positioned at the high-voltage end or at the earth end of the discharge current path.
  • the switching state of the switching arrangement can preferably be secured in defined switching positions of the switching contact pieces that can be moved relative to one another. For example, it can be provided that when the switching contact pieces are switched off, the relative position of the switching contact pieces is secured. It can also be provided that, in the switched-on state, the switching contact pieces which can be moved relative to one another the position of the switch contact pieces is secured.
  • a locking device to be used should be dimensioned in such a way that a drive force to be transmitted via the kinematic chain can be absorbed by the locking device, so that a reliable blocking of a movement is ensured or a transmission of a force via the kinematic chain is prevented
  • a locking element of the locking device can be moved into a movement path of a machine element of the kinematic chain, so that a movement of the machine element is blocked, for example, by striking a locking shoulder against the locking element and the machine element or the kinematic chain is fixed.
  • the blocking device is now designed in such a way that the blocking element can block different positions of the machine element to be blocked when one and the same switching state is present, it is possible to deviate from the fact that only a single position of the kinematic chain can be fixed.
  • a movement of the kinematic chain can be blocked in smaller increments, since multiple engagement of the blocking element on the machine element is possible.
  • the switching contact pieces can remain almost at rest relative to one another and maintain their switching state despite a movement of the machine element.
  • a spindle drive is part of the kinematic chain, with a rotation of a machine element driving the spindle and consequently an axial displacement of a nut seated on the spindle.
  • the spindle drive can already block the reaction of movements emanating from the switching contact pieces, so that the blocking device is already decoupled from forces which could emanate from the switching contact pieces.
  • the locking device essentially serves to prevent a the switching contact pieces acting drive movement, which would be transmitted via the kinematic chain.
  • the locking element could engage in a recess in the machine element, wherein the machine element can have several locking shoulders which can be brought into engagement with the locking element in succession depending on the position of the machine element. This enables the machine element to be locked in a form-fitting manner via the locking element.
  • a locking shoulder it can be provided that the machine element has a recess into which the locking element can engage, so that the movement of the machine element is blocked.
  • a locking shoulder can be designed in such a way that it rises from a surface as an elevation (e.g. protruding edge). It can be provided that, depending on the design of the locking shoulder, a locking device locks with a play, which allows easy locking and unlocking of the locking element. Furthermore, the locking device can also be designed in such a way that locking takes place only in one direction, with a movement of the machine element being permitted when the direction is reversed. It can also be provided that the locking device is designed in such a way that there is a complete blocking of any movement of the machine element and consequently the kinematic chain in the case of a locking locking device.
  • a further advantageous embodiment can provide that the locking element engages a rotatably mounted machine element.
  • a rotatably mounted machine element has the advantage that the machine element rests in a pivot bearing, whereby one (possibly several) locking shoulder (s), which can interact with a locking element, can be moved past the locking element several times by rotation.
  • This makes it possible to provide several locking shoulders on the locking element and thus to secure the machine element in different relative positions.
  • a rotation of the machine element for example, depending on the position and the number of locking shoulders to be provided, a play in motion can be permitted in the locked state.
  • a coarse or finer definition of different positions of the machine element can be made.
  • a further advantageous embodiment can provide that the locking element is actuated by means of a tool, in particular a key.
  • the tool By using a tool, it is possible to control the expenditure of force which has to be applied to operate the locking device.
  • the tool can be used to increase or reduce the force.
  • the use of a tool can be used to ensure that only personnel in possession of the tool can actuate the locking device and, consequently, also actuate the electrical switching arrangement.
  • the tool can be designed, for example, in the form of a key, so that there is increased security when operating the electrical switching arrangement or the locking device.
  • it is also advantageous to accommodate the locking device in an area protected from the weather, for example, so that the locking device only needs to be accessed by means of the tool. This allows in one housing necessary openings for operating the locking device are kept small, for example, in order to only allow accessibility by means of the tool. This also improves the security against manipulation of the locking device.
  • a further advantageous embodiment can provide that the locking device is accessible on the shell side in an essentially rotationally symmetrical drive housing.
  • a rotationally symmetrical drive housing has the advantage that it can be easily manufactured. Furthermore, protrusion-free structures are created on the shell side, so that mechanical damage to the drive housing is made more difficult.
  • the drive housing can accommodate, for example, a transmission that is part of the kinematic chain. For example, movements can be initiated on the drive housing in order to set the kinematic chain in motion.
  • a crank can be provided on the drive housing, which enables a manual coupling of a movement to the kinematic chain, with a gear of the kinematic chain, for example, being arranged within the drive housing, which enables a reduction and / or translation of the movement.
  • Positioning an access to the locking device on the jacket side has the advantage that, for example, the movement can be coupled in at the front, for example by means of a crank.
  • the rotary movement can preferably be coupled approximately centrally into an essentially rotationally symmetrical drive housing.
  • a jacket-side access is advantageous in order to avoid overlapping movements.
  • a drive movement can be reliably introduced into the kinematic chain on the front side, and the locking device can be actuated on the casing side if necessary.
  • a tool holder for receiving the tool for actuating the locking device can be used on the shell side.
  • a lock for a tool in the form of a key can be arranged on the casing side in the drive housing.
  • a shell-side operating surface in the drive housing is covered by a protective cap that is to be arranged as required.
  • the tool in order to operate the locking device, is to be placed on the jacket side of an essentially rotationally symmetrical drive housing.
  • a tool can be inserted on the jacket side into a rotationally symmetrical drive housing.
  • a perpendicular application of the tool relative to the axis of rotation of the drive housing can be provided.
  • the locking element can be moved from the radial direction with respect to an axis of rotation of the machine element.
  • a radial direction with respect to an axis of rotation of a machine element is favorable because a locking element and a locking shoulder can now engage in one another in the circumferential direction of the machine element.
  • the machine element can preferably be aligned with its axis of rotation in alignment with an axis of rotation of a rotationally symmetrical drive housing. In this case, a shell-side alignment of the operating axis or the attachment direction of a tool can be achieved in a simple manner.
  • the machine element is a shaft.
  • a shaft is a rotatably mountable machine element which has an axis of rotation.
  • a shaft can rotate around the axis of rotation rotate, so that a locking element can interact with the shaft in particular from a radial direction with respect to the axis of rotation of the shaft.
  • the shaft can have at least one corresponding locking shoulder.
  • a locking shoulder can be formed by a recess in the shaft or by a locking shoulder on the shaft (e.g. profiled shaft).
  • the shaft can, for example, be designed in sections as a spindle, polygon, cranked, etc.
  • a further advantageous embodiment can provide that the shaft is mounted on a first and a second axially spaced bearing point, the locking element engaging between the two bearing points.
  • a storage on a shaft at two bearing points enables a safe guidance of the shaft and a backlash-free rotation of the same.
  • the locking element can engage between the bearing points.
  • the bearing points serve as axial stops in order to secure the shaft in its position.
  • Ball bearings for example, can be used as bearing points, which can take over an axial locking of the movability of the shaft.
  • a further advantageous embodiment can provide that the locking element engages in a recess in the machine element.
  • a recess in the machine element makes it possible to form a locking shoulder on the shaft or on the machine element, with which the locking element can interact and develop its locking effect.
  • a recess can bring about a change in the cross section of the machine element or the shaft.
  • the shaft can have a multi-surface structure, for example a square or hexagonal structure, in sections, so that there are several on the circumference of the shaft Shoulders are formed with which the locking element can interact.
  • the shaft can also have a blind hole-like recess in which the locking element can engage.
  • locking can thus take place by means of a locking element with a greater or lesser degree of play.
  • a recess designed to complement the locking element should be made in the machine element. If several recesses are provided on the machine element, the axes in the locking shoulder should be oriented essentially radially or tangentially or at right angles to the axis of rotation of the machine element.
  • a further advantageous embodiment can provide that the shaft has a cross-sectional reinforcement in the area where the locking element engages.
  • a cross-sectional reinforcement provides the possibility of making recesses, for example blind hole-like recesses, in the machine element, with sufficient mechanical stability of the machine element, for example the shaft, also being provided in the area of the locking shoulders due to the cross-sectional reinforcement.
  • this cross-sectional reinforcement can also serve to limit the axial displaceability of the machine element, in particular a shaft.
  • bearing points for the shaft or the machine element can be located flanking the connection or the cross-sectional reinforcement, the bearing points, for example, allowing a rotary movement of the machine element, but preventing an axial movement.
  • a further advantageous embodiment can provide that the locking device is arranged on a housing of a switchgear.
  • a switchgear housing is used to mechanically delimit the switchgear.
  • the switchgear has a switching arrangement which, in particular, has switching contact pieces that can be moved relative to one another.
  • the switching arrangement should be arranged at least partially within the housing.
  • the housing surrounds and limits the switching arrangement.
  • the switching arrangement can be arranged in a discharge current path with a surge arrester.
  • a variable-impedance control element can be arranged at least partially within the housing. Consequently, a discharge current path can also be arranged at least partially within the housing.
  • the housing itself can, if necessary, be designed to be electrically conductive or electrically insulating and, for its part, have different types of electrical potentials.
  • the locking device can be mounted, for example, on a drive housing, the drive housing being attached to the housing of the switchgear.
  • the drive housing can be flanged to the housing of the switchgear. This is advantageous in order to be able to carry out repairs easily and inexpensively.
  • a further advantageous embodiment can provide that the housing is a pressure vessel.
  • a pressure vessel is a container that can hermetically enclose a medium, with the medium being able to be placed under negative or positive pressure within the housing.
  • An electrically insulating fluid which is an electrical one, can preferably be arranged in the pressure vessel Insulation of electrically conductive sections located within the pressure vessel takes over.
  • the switching contact pieces can be electrically isolated by the electrically insulating fluid.
  • the electrically insulating fluid can wash around the switching contact pieces.
  • Fluorine compounds such as sulfur hexafluoride, fluoroketones and fluorine nitriles have proven particularly useful as electrically insulating fluids. However, other fluids such as carbon dioxide, nitrogen, purified air, etc. can also be used.
  • the fluids can preferably be in a gaseous state within the pressure vessel. However, it can also be provided that the fluid is arranged in the liquid state or partly in gaseous form and partly in liquid form within the housing.
  • the formation of a fluid-tight housing, but not necessarily pressure-tight housing, furthermore has the advantage that at least one fluid can be enclosed without the fear of undesired volatilization of the same.
  • a further advantageous embodiment can provide that a surge arrester, in particular with a separating device, is arranged at least partially in the housing.
  • a surge arrester arrangement has a surge arrester.
  • a surge arrester for example, a non-linear variable impedance control element, such as. B. a varistor can be used.
  • the surge arrester is part of a discharge current path, which extends in particular between a phase conductor to be protected to a ground potential.
  • a separating device can be arranged in the discharge current path.
  • the isolating device can also be referred to as an electrical circuit arrangement which has a first and a second switching contact piece that can be moved relative to one another.
  • the Figure 1 shows an electrical circuit arrangement in section.
  • the electrical switching arrangement has a housing 1.
  • the housing 1 is designed essentially as a hollow cylinder and has an essentially circular cross section.
  • the housing 1 extends coaxially to an axis 2.
  • the housing 1 has a metal base body which carries ground potential.
  • a front end of the base body of the housing 1 is formed by an electrically insulating disk insulator 3.
  • the housing 1 itself is designed as a fluid-tight housing 1 so that the interior of the housing 1 can be filled with an electrically insulating fluid, the housing 1 preventing unintentional volatilization of the filled fluid. Electrically conductive sections of the housing 1 have ground potential.
  • the interior of the housing 1 accommodates a surge arrester 4, essentially in alignment in the direction of the axis 2.
  • the surge arrester 4 serves as a variable-impedance control element, which has a variable impedance behavior as a function of an electrical voltage across it.
  • the surge arrester 4 is a non-linear impedance element.
  • the surge arrester 4 can advantageously be based on metal oxides, be composed in particular of zinc oxides. For example, several metal oxide blocks stacked one on top of the other can be electrically contacted with one another and connected to form a mechanically stable association.
  • the surge arrester 4 is part of a discharge current path which carries an end 5 on the high voltage side, for example high voltage potential.
  • phase conductor which is in the Figure 1 is not shown, electrically conductively contacted via a phase conductor section with the high-voltage end 5 of the surge arrester 4.
  • the phase conductor section crosses the pane insulator 3 in a fluid-tight manner.
  • the surge arrester 4 is held mechanically relative to the housing 1.
  • the surge arrester 4 has an earth-side end 6 facing away from the high-voltage end 5.
  • a first switching contact piece 7 and a second switching contact piece 8 are arranged in the discharge current path.
  • the two switching contact pieces 7, 8 are part of a switching arrangement and can be moved relative to one another.
  • the first switching contact piece 4 is designed in the form of a socket and, in turn, is in permanent contact with the earth-side end 6 of the surge arrester 4.
  • the second switching contact piece 8 is movably supported and is designed in the shape of a bolt, the cross section of the second switching contact piece 8 being shaped to complement the socket opening of the first switching contact piece 7.
  • the second switching contact piece 8 is permanently subjected to earth potential and, in the event of a galvanic contact with the first switching contact piece 7, serves to transfer a ground potential to the first switching contact piece 7 and to the earth-side end 6 of the surge arrester 4.
  • the second switching contact piece 8 can be moved in a sliding socket 9 stored.
  • the sliding bush 9 is in turn mounted on the housing 1, in particular on the section of the housing 1 which carries earth potential, so that the sliding bush 9 can be easily subjected to earth potential.
  • the second switching contact piece 8 is also subjected to ground potential via an electrical contact with the sliding bush 9. It is provided that the second switching contact piece 8 is mounted displaceably along the axis 2.
  • a further embodiment can provide that the switching contact pieces 7, 8, which are movable relative to one another, are arranged on the high-voltage end 5 of the surge arrester. Regardless of a position of the switching contact pieces 7, 8, an electrical series connection should be provided between the surge arrester 4 and the switching contact pieces 7, 8 which can be moved relative to one another in the course of the discharge current path.
  • a drive arrangement 10 is arranged on the housing 1.
  • the drive arrangement 10 can be part of a kinematic chain by means of which a movement that is generated outside the housing 1 is implemented and transmitted through a wall of the housing 1 to at least one of the two switching contact pieces 7, 8.
  • the kinematic chain is preferably to be guided through the housing 1 in such a way that the fluid-tightness of the wall that is passed is maintained.
  • the kinematic chain has a drive crank 11, by means of which a rotation can be carried out manually. The rotation of the drive crank 11 is transmitted to a first spindle 12, which in turn is connected to a shaft 13.
  • the shaft 13 is provided to penetrate a wall of the housing 1 and to enable a fluid-tight movement of the kinematic chain.
  • the shaft 13 is connected to a second spindle 14 on the inside of the housing 1.
  • the second spindle 14 is encompassed by a thread of the second contact piece 8.
  • the second contact piece 8 is mounted so as to be axially displaceable and is guided in a manner secured against rotation, so that a rotation of the second spindle leads to an axial movement of the second switching contact piece 8.
  • the drive arrangement 10 has a drive housing 15.
  • the drive assembly 10 shown is enlarged in FIG Figure 2 pictured.
  • the drive arrangement 10 has a basic frame 16 which is designed essentially as a hollow cylinder.
  • a first front end of the basic frame 16 is provided with an annular flange, via which the basic frame 16 is flanged to the housing 1.
  • the first front end of the basic structure 16 is furthermore partially closed with a retracted annular shoulder 17.
  • the annular shoulder 17 delimits a recess that has a smaller diameter than the cross section of the basic structure 16.
  • a bearing and sealing package 18 for the shaft 13 is pressed against a contact shoulder 19 of the housing 1 via the recess of reduced diameter.
  • the bearing and sealing package 18 has axially spaced apart ball bearings 20, between which two radial seals 21 are arranged.
  • the bearing and sealing package 18 is held and pressed in between the contact shoulder 19 in the transverse wall of the housing 1 and the drawn-in annular shoulder 17, so that the position of the shaft 13 is axially secured.
  • the shaft 13 is sealed against the transverse wall of the housing 1 via the radial seals 21, so that the shaft 13 can be rotated in a sealed manner.
  • the fluid tightness of the crossed wall of the housing 1 is retained.
  • the end of the shaft 13 is connected to the first spindle 12 and the second spindle 14 via couplings 22.
  • a rotary movement of the spindles 12, 14 can be transmitted over the shaft 13 via the couplings 22.
  • a movable switch position indicator is seated on a thread turn of the first spindle 12 and depicts the switching states ⁇ and I of the switching contact pieces 7, 8.
  • the positions ⁇ and I of the switch position indicator can be optically detected via recesses on the basic frame 16.
  • the drive housing 15 is connected to the basic framework 16 at a second end of the basic framework 16, which faces away from the housing 1.
  • threaded bores are made on the front side in the tubular element of the basic frame 16, through which a bottom section of the pot-shaped drive housing 15 is screwed.
  • a pipe socket-like indentation 23 is provided in the bottom section.
  • the pipe socket-like retraction 23 serves to support the second spindle 14, so that the second spindle 14 is supported on the one hand by the bearing and sealing package 18 of the shaft 13 and the coupling 22 connected in between and on the other hand on the pipe socket-like retraction 23.
  • ball bearings 20 are in turn inserted into the pipe socket-like recess 23, which in turn are positioned axially spaced from one another.
  • the first spindle 12 acts as a shaft.
  • the first spindle 12 / shaft has an enlarged cross-section.
  • the cross-sectional enlargement is designed in such a way that, on the one hand, there is axial contact for the ball bearings 20; on the other hand, the cross-sectional enlargement provides the possibility of radially aligned recesses 24 in the first spindle 12 / shaft or in the enlarged cross-section of the spindle 12 / shaft bring in.
  • the dimensioning of the cross-sectional enlargement and the radial immersion depth of the radially aligned recesses 24 is selected such that the weakening of the cross section by the radially aligned recesses 24 takes place in such a way that a constant cross-section of the first spindle 12 / shaft is maintained in the axial direction of the axis 2.
  • the spindle 12 / shaft is kept free of threads in the area of the mounting of the spindle 12 / shaft, so that a backlash-free rotary mounting of the first spindle 12 / shaft is also possible the pipe socket-like retraction 23 is possible.
  • a multi-piece design can also be provided, the spindle 12 via a coupling, for example with a separate shaft, which has one of the Figure 2 has a substantially corresponding cross section, is connected in order to achieve a bearing on the pipe socket-like recess 23.
  • the radially aligned recesses 24 provide locking shoulders on the first spindle 12 / shaft.
  • the first spindle 12 / shaft is able to block a movement of the kinematic chain.
  • a blocking device 25 is provided in order to block a movement.
  • the locking device 25 passes through aligned openings which are introduced on the jacket side into the pot-shaped drive housing 15, the essentially hollow-cylindrical basic structure 16 and the pipe socket-like recess 23.
  • the respective recesses are arranged essentially in alignment, so that they extend in alignment essentially in the radial direction with respect to the axis 2.
  • the cross-sections of the individual recesses in the drive housing 15 in the basic frame 16 as well as the neck-like recess 23 can vary.
  • the locking device 25 has a locking element 26 which is essentially bolt-shaped. At its end facing the radially aligned recesses 24, the locking element 26 has a shape that is complementary to the cross section of the radially aligned recesses 24.
  • the radially oriented recesses 24 can have a circular cross section, and accordingly the locking element 26 can have a shape-complementary circular cross section at its end facing the radially oriented recesses 24.
  • the locking element 26 is supported in a spring-loaded manner on the pipe socket-like recess 23.
  • a spring 27 is mounted in a cross-sectional widening of the recess of the pipe socket-like indentation 23, which serves to guide the locking element 26.
  • a force effect the spring 27 on the locking element 26 is aligned in such a way that the locking element 26 is pressed away from the radially aligned recesses 24.
  • the locking device 25 has a guide sleeve 28.
  • the guide sleeve 28 is fixedly inserted into the recesses of the drive housing 15 or of the basic frame 16, so that the locking element 26 can slide in the guide sleeve 28.
  • the direction of movement or displacement direction of the locking element 26 is oriented essentially radially to the axis 2.
  • a tool holder 29 is provided at the end of the bolt of the locking element 26 which faces away from the radially aligned recesses 24.
  • the tool holder 29 can, for example, have a shape coding into which a corresponding tool can be inserted.
  • the tool holder 29 can be designed in the manner of a polygonal recess of a tumbler or the like, so that the locking element 26 can only be actuated via the tool holder 29 with a tool to be placed or inserted in a complementary shape.
  • Triangular keys, square keys, tumbler keys, profile keys, etc. have proven to be a tool, for example.
  • An axial displacement of the locking element 26 can preferably be superimposed by an at least partial rotation thereof. A rotation can be forced, for example, by a link 32 in which a scanning element 31 is guided. By means of the link 32, the locking element 26 can be positively guided and the position can be secured.
  • the protective cap 30 can, for example, be made of an insulating material and enable an elastomeric overstretching of the locking device 25. However, it can it can also be provided that a correspondingly more complexly structured flap-like overvoltage acts as a protective cap 30.
  • the configuration and guidance of the locking element 26 of the locking device 25 will now be described by way of example.
  • the Figure 3 shows a section through the locking device 25,
  • the Figure 4 shows a partial cutout of the locking device 25.
  • the locking element 26 is shown in its locking position, the locking element 26 engaging in one of the radially aligned recesses 24 and blocking a rotation of the drive crank 11 via the locking shoulders of the radially aligned recess 24.
  • the locking element 26 Radial to the displacement axis of the locking element 26, the locking element 26 is equipped with a bolt 31, which functions as a sensing element.
  • the bolt 31 protrudes into a link 32 and is positively guided in the link 32.
  • the link 32 has an essentially U-shaped course, so that an end position of the locking element 26 is defined on each of the free legs of the U-profile.
  • the free legs run essentially transversely to the axis of movement of the locking element 26.
  • alternative configurations of the connecting link can also be provided which enable the locking element 26 to be fixed, preferably via the bolt 31.
  • a plurality of radially aligned recesses 24 are positioned on the spindle 12 / shaft in the area of the enlarged diameter.
  • the maximum increment of a drive lever 11 is variable, which is necessary up to a possible blocking or possible retraction of the locking element 26 into a radially aligned recess 24.
  • a locking device 25 When a locking device 25 is positioned at least partially within a drive housing 15, it is advantageous that parts that can be moved relative to one another, such as the locking element 26 and the spring 27, are mounted in a protected area of the drive housing 15. Only a small area of the locking device 25 is visible on the casing side on the drive housing 15. By using a protective cap 30, its soiling and the soiling of sections located in the interior of the drive housing 15 can be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP17151563.8A 2016-02-16 2017-01-16 Elektrische schaltanordnung Active EP3208819B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016202330.6A DE102016202330A1 (de) 2016-02-16 2016-02-16 Elektrische Schaltanordnung

Publications (2)

Publication Number Publication Date
EP3208819A1 EP3208819A1 (de) 2017-08-23
EP3208819B1 true EP3208819B1 (de) 2021-07-28

Family

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EP17151563.8A Active EP3208819B1 (de) 2016-02-16 2017-01-16 Elektrische schaltanordnung

Country Status (5)

Country Link
EP (1) EP3208819B1 (ko)
JP (1) JP6393790B2 (ko)
KR (2) KR102125048B1 (ko)
CN (1) CN107086138B (ko)
DE (1) DE102016202330A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016202329A1 (de) * 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Überspannungsableiteranordnung
DE102017011039A1 (de) * 2017-11-29 2019-05-29 Iie Gmbh & Co. Kg Vorrichtung zum Schalten eines mit hoher Spannung aus einer Spannungsquelle betriebenen elektrischen Vebraucherkreises
DE102018215754A1 (de) * 2018-09-17 2020-03-19 Siemens Aktiengesellschaft Überspannungsableiter und Verfahren zum Wechseln einer Antriebsanordnung eines Überspannungsableiters
DE102019209747B3 (de) 2019-07-03 2020-10-08 Ellenberger & Poensgen Gmbh Schutzschalter
DE102019209745B4 (de) * 2019-07-03 2021-02-11 Ellenberger & Poensgen Gmbh Elektrisches Schaltsystem und Schutzschalter
CN111509490B (zh) * 2020-03-20 2021-04-09 嘉兴市平安电气工程有限公司 一种具有自锁功能的电气开关
CN113451980A (zh) * 2021-08-16 2021-09-28 西门子能源国际公司 避雷器
CN117497364B (zh) * 2024-01-02 2024-03-22 威士敦电力科技(无锡)有限公司 一种高压断路器机械合闸闭锁装置

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GB805310A (en) * 1956-03-20 1958-12-03 Brush Electrical Eng Operating handle interlock for electric oil-switch
FR1281315A (fr) * 1960-11-28 1962-01-12 Dispositif de sécurité automatique pour interrupteur, sectionneur et autres appareils électriques, ou non
DE1143901B (de) * 1961-01-24 1963-02-21 Daimler Benz Ag Elektrischer Handschalter mit Schluesselverriegelung, insbesondere fuer Foerderanlagen
DE1151048B (de) * 1961-09-07 1963-07-04 Continental Elektro Ind Ag Mit Schluessel betaetigbares Vorsatzgeraet, insbesondere fuer elektrische Tastschalter
FR1482991A (fr) * 1966-04-20 1967-06-02 Telemecanique Electrique Commutateur à verrouillage
JPS5995531U (ja) * 1982-05-21 1984-06-28 三菱電機株式会社 回動軸の施錠装置
JP2550259Y2 (ja) * 1990-10-17 1997-10-08 株式会社明電舎 断路器の操作装置
DE4142548C2 (de) * 1991-12-21 1997-07-03 Abb Energie Ag Antrieb für einen Trennschalter, insbesondere für einen Fahrleitungsschalter
JP2000078714A (ja) * 1998-09-01 2000-03-14 Fuji Electric Co Ltd ガス絶縁開閉装置の簡易断路器
DE10317735B3 (de) * 2003-04-11 2004-11-18 Siemens Ag Erdungsschalter mit einem bewegbaren Kontaktstück
SG176346A1 (en) * 2010-06-04 2011-12-29 Schneider Electric South East Asia Hq Pte Ltd A switching device
EP2690314B1 (de) * 2012-07-27 2017-03-01 Siemens Aktiengesellschaft Spindelantrieb
JP6066768B2 (ja) * 2013-02-28 2017-01-25 三菱電機株式会社 避雷器およびこの避雷器を内蔵したガス絶縁開閉装置

Also Published As

Publication number Publication date
JP6393790B2 (ja) 2018-09-19
JP2017147226A (ja) 2017-08-24
KR102125048B1 (ko) 2020-06-19
KR20190034176A (ko) 2019-04-01
DE102016202330A1 (de) 2017-08-17
CN107086138A (zh) 2017-08-22
CN107086138B (zh) 2020-01-17
KR20170096602A (ko) 2017-08-24
EP3208819A1 (de) 2017-08-23

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