• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An earthing switch having a fixed earth contact (16), a moving earth contact (18) and a phase contact, said fixed (16), movable (18) and phase earth contacts being substantially aligned along a longitudinal axis (Y), the movable contact (18) being able to move along the longitudinal axis (Y) in order to come into contact with the phase contact, the fixed contact (16) being fixed to the enclosure (6) of an electrical apparatus, the movable contact (18) being in electrical contact with the fixed contact (16), the movable contact (18) being slidably mounted in a housing (24) of the fixed axis contact longitudinal axis (Y) open at one end opposite the phase contact, the wall of said housing (24) having at least one longitudinally extending lateral lumen for mechanically linking the movable contact (18) and a transmission system connected to a mechanism actuating.
    公开号:CH705205B1
    申请号:CH02097/12
    申请日:2011-04-28
    公开日:2016-09-30
    发明作者:Treier Lukas
    申请人:Alstom Technology Ltd；
    IPC主号:
    专利说明:

    Technical field and prior art
    The present invention relates primarily to ground disconnectors used in electrical equipment in a sealed metal casing ("gas-insulated switchgear" in English denomination), including three-phase electrical equipment single envelope.
    The electrical equipment under sealed enclosure are generally provided with earthing switches to ground the conductor or conductors in the metal enclosure, thus ensuring the safety of operators during maintenance and inspection of various parts of the equipment.
    Such earthing switches are for example known from EP 0 196 240. They comprise a movable element axially between a closed position of grounding and an open position.
    The movable element comprises a first end connected to a linear actuator and a second free end intended to penetrate into a contact electrically connected to a conductive bar.
    The moving contact passes right through a socket-shaped contact and slides therein.
    In general, the earthing switches of the state of the art have a large axial size. Indeed, it is necessary to provide sufficient space to accommodate the movable contact which extends axially and the transmission means of the movement delivered by an external drive mechanism.
    JP 2008-140 587 discloses an electrical apparatus with a sliding tubular movable contact about a rod-shaped contact connected to the ground, the actuating mechanism is linear. It is therefore very bulky.
    It is therefore an object of the present invention to provide a new earthing switch architecture.
    It is also an object of the present invention to provide electrical equipment with increased compactness.
    Presentation of the invention
    The stated purpose is achieved by an earthing switch comprising a movable element adapted to slide in a fixed part connected to the ground, and a phase contact connected to a conductive bar, the fixed part having a lateral opening to allow to secure the movable part to an axial displacement device.
    The invention provides a very good guidance.
    Particularly advantageously, the axial displacement means of the movable contact comprise at least one integral lever in motion of a rotary shaft and a rod connected laterally to the movable part.
    The rotary shaft associated with the new architecture of the earthing switch provides a very large compactness since it is possible to arrange the displacement means and the earthing switch one next to the other.
    On the contrary, in the electrical equipment of the state of the art, the displacement means are offset with respect to the disconnector along the sliding axis of the movable portion of the earthing switch.
    The present invention thus relates to an earthing switch comprising at least one fixed earth contact, a moving earth contact and a phase contact, said fixed, mobile and phase earth contacts being substantially aligned along the ground. a longitudinal axis, the moving earth contact being able to move along the longitudinal axis in order to come closer in order to come into contact with or move away from the phase contact, the fixed earth contact being intended to be fixed to the casing of a metal-enclosed electrical apparatus filled with a dielectric gas under pressure and to be connected to earth, the moving earth contact being in electrical contact with the fixed earth contact, the moving earth contact being slidable in the fixed earth contact along the longitudinal axis, said fixed earth contact having a longitudinal axis housing open at one end opposite the act of phase, in which is mounted the moving earth contact, the wall of said housing having at least two longitudinally extending slots and being diametrically opposed to allow the establishment of a lateral mechanical connection between the moving earth contact and a transmission system connected to an actuating mechanism for actuating the earthing switch. The mechanical connection between the movable earth contact and the transmission system is achieved by means of a sleeve of dielectric material slidably mounted around the fixed earth contact. The socket ensures good guidance and good electrical insulation. The socket electrically isolates the earth contact of the transmission system.
    The movable earth contact may comprise at a longitudinal end opposite to that intended to come into contact with the phase contact, a transverse bore traversed by an axis solidarisant the moving earth contact and the sleeve, said axis passing through the two lights.
    The fixed earth contact may comprise a solid rod portion for passing through the casing and a hollow stem end delimiting the housing.
    The disconnector according to the present invention comprises for example two perforated plates, parallel to each other and perpendicular to the longitudinal axis connected by two parallel side plates, the fixed ground contact passing through the two plates, the sleeve having a median annular projection. delimiting two end portions of reduced section, the annular projection of the sleeve being immobilized between the two plates, the transmission system being intended to be articulated on the side plates.
    The earthing switch is suitable for three-phase electrical equipment comprising three sets of fixed earth contacts, mobile and phase.
    The disconnector according to the invention advantageously comprises a spreader which movable earth contacts are integral in motion. Each bushing may comprise a median annular projection delimiting two end portions of reduced section, and the crossbar comprises for each movable earth contact, two parallel drilled trays perpendicular to the longitudinal axis, the three pairs of trays being connected by two plates parallel transverse, the fixed earth contacts passing through the two plates and the annular projection of the sleeve being immobilized between the two plates, the transmission means being intended to be articulated on the side plates.
    The end of the fixed earth contact in contact with the movable earth contact comprises for example a tulip shaped contact element, and the phase contact is also shaped tulip.
    The earth contact (s) is or are advantageously mounted on a cover intended to be fixed in a sealed manner on the envelope.
    The present invention also relates to an electrical apparatus in a metal casing filled with a dielectric gas under pressure comprising an earthing switch according to the present invention, at least one electrical conductor on which is mounted the phase contact, and a transmission system of a movement connected to an actuating mechanism disposed outside the casing. The conductor extends for example along an axis orthogonal to the longitudinal axis of alignment of the fixed and movable earth contacts and the phase contact.
    The fixed earth contact is preferably electrically isolated from the transmission system, for example by the bushing.
    In an exemplary embodiment, the transmission system comprises a drive shaft passing through the casing and connected to the actuating mechanism, said drive shaft being intended to be rotated about its axis, a lever integral in rotation with the drive shaft and a rod articulated in rotation on the lever and on the moving earth contact via an axis.
    The drive shaft is advantageously orthogonal to the longitudinal axis of the fixed earth contact and, particularly advantageously, the shortest distance in an open contact position between the axis of rotation of the drive shaft. drive and an axis perpendicular to the longitudinal axis, orthogonal to the axis of rotation of the drive shaft and passing through the axis through which the rod is articulated in rotation on the moving earth contact is not more than 0.5 times the distance between the axis of rotation of the drive shaft and the point of attachment of the lever to the connecting rod.
    The present invention also relates to a three-phase electrical apparatus and comprising three electrical conductors and wherein the disconnector is an earthing switch according to the present invention.
    The three movable ground contacts are preferably integral in motion along the longitudinal axis. For example, the three movable contacts are mounted in a rudder, the connecting rod of the transmission system being articulated on said rudder.
    The electrical equipment according to the present invention may comprise a second lever integral in rotation with a coupling shaft parallel to the drive shaft, a second link articulated between the second lever and a side plate, and a linkage coupling between the drive shaft and the coupling shaft.
    Very advantageously, the drive shaft is disposed between a first contact assembly and a second contact assembly and the coupling shaft is disposed between the second contact assembly and a third contact assembly.
    The coupling linkage may be formed by a first coupling lever rotatably connected to the drive shaft and a second coupling lever rotatably connected to the coupling shaft and a coupling bar rotatably articulated on the first and second coupling levers.
    Brief description of the drawings
    The present invention will be better understood with the aid of the description which follows and the attached drawings in which:<tb> Fig. 1A <SEP> is a longitudinal sectional view of a portion of electrical equipment according to the present invention on which an earth-earthing switch according to the present invention can be seen,<tb> fig. 1B <SEP> is a longitudinal sectional view of an alternative embodiment of the phase contact part of the electrical equipment of FIG. 1A,<tb> fig. 1C <SEP> is a longitudinal sectional view of another alternative embodiment of the phase contact part of the electrical equipment of FIG. 1A,<tb> fig. 2A <SEP> is a perspective view of the earthing switch of FIG. 1A,<tb> fig. 2B <SEP> is a detail view of FIG. 2A,<tb> figs. 3A and 3B <SEP> are front views of an earthing switch for a three-phase apparatus in the open position and in the closed position respectively,<tb> fig. 4 <SEP> is a perspective view of a detail of the arrangement of FIGS. 3A and 3B,<tb> fig. 5 <SEP> is a detail view of an alternative embodiment in the case of single-phase electrical equipment.
    Detailed presentation of particular embodiments
    The present invention applies to both single-phase earthing switches and three-phase earthing switches.
    The following description relates to a three-phase earthing switch, and more generally on a three-phase electrical equipment.
    In FIGS. 1A and 2A, one can see part of an electrical apparatus 2 according to the present invention at an earthing switch 4 according to the present invention.
    In FIG. 1A, the three-phase earthing switch 4 is seen in profile, only one contact is seen, however, this one has three, as can be seen in FIGS. 3A and 3B.
    The electrical equipment 2 comprises a sealed envelope 6 filled with a dielectric gas under pressure, for example sulfur hexafluoride (SF6). The electrical equipment 2 comprises, housed in the casing 6, three current conductors 8, for example high voltage, only one of which is visible in FIG. 1A.
    The current conductor 8 extends along an axis X along which the current flows and has a side contact 10 for enabling the conductor 8 to be grounded, this contact 10 is called a phase contact.
    The contact 10 is oriented along an axis Y, orthogonal to the axis X. In the example shown, the contact 10 comprises a housing 12 electrically connected to the conductor 8 and a contact element 14 in the shape of a tulip for receive the end of a contact element of the earthing switch 4.
    The tulip shape is in no way limiting.
    The earthing switch according to the present invention comprises three substantially similar assemblies E1, E2, E3 each associated with an electrical conductor 8.
    Only the set E1 will be described in detail.
    The envelope 6 may be tubular, the conductors being parallel to the axis of the envelope 6.
    In the example shown, the envelope 6 has a boss 7 lateral in which are housed the three sets E1, E3 and E3 of the earthing switch.
    The boss 7 is made by molding and attached to the tubular portion of the casing, the latter comprises for example an annular flange sealingly secured by screw-nut assemblies and sealing means such as a flat gasket (not shown) on a flange of the tubular portion.
    In a particularly advantageous manner, all the elements of the earthing switch according to the present invention are mounted on the boss 7, which makes it possible to mount the earthing switch easily on the casing 6 and also to disassemble it easily.
    The disconnector is therefore previously produced in the form of a subset.
    Indeed, only a static seal between the boss flange 7 and that of the tubular portion is made during the final assembly.
    The assembly E1 comprises a fixed earth contact 16 integral with the casing 6 and a moving earth contact 18 with respect to the fixed earth contact 16 and for electrically connecting the fixed earth contact 16 to the electrical conductor 8. .
    The fixed earth contact 16 has an elongated shape and seals the envelope 6 through an opening 20.
    Pressurized gas seals are provided at the passage of the casing by the moving earth contact 16.
    The fixed earth contact 16 has a longitudinal first end 16.1 located outside the casing 6 and a second longitudinal end 16.2 located inside the casing 6.
    The first longitudinal end 16.1 is connected to the ground, putting the fixed earth contact 16 and the moving earth contact 18 to the ground.
    The envelope 6 is also connected to the ground.
    The second longitudinal end 16.2 has a housing 24 of Y axis. Therefore, the axis of the housing 24 and the axis of the contact element 14 are aligned. The housing 24 is provided with a peripheral wall 25.
    The moving earth contact 18 has an elongate shape, such as a rod slidably mounted in the housing 24 along the Y axis. The inside diameter of the housing 24 and the outside diameter of the movable contact 18 are chosen from so that the movable contact 18 does not come into contact with the housing 24. For example, the inside diameter of the housing 24 is 1 mm to 4 mm larger than the diameter of the movable contact 18.
    The electrical contact between the fixed contact 16 and the movable contact 18 is obtained by a tapered contact 16.3 which is fixed to the open end of the housing 24 of the fixed contact 16. The movable contact 18 is then guided by this contact 16.3 and mainly by a guide sleeve 34 which will be described later.
    For example, the section of the moving earth contact 18 is circular and the housing 24 has a circular section.
    In the example shown, the moving earth contact 18 has a first longitudinal end 18.1 intended to penetrate into the contact element 14 of the phase contact 10.
    The second longitudinal end 18.2 of the moving earth contact 18 is mechanically connected to an axial displacement device 26 of the moving earth contact 18 along the Y axis, visible in FIGS. 3A and 3B.
    In FIG. 1B, we can see a variant of the contact 14, it is mounted inside a hole machined in the conductor 8.
    In FIG. 1C, we can see another variant in which the axis of the conductor 8 is aligned with the Y axis of the earth contact. The tulip-shaped contact 14 is received in a phase contact 10 similar to the phase contact 10 which is housed in a passage 15.1 passing through an electrical insulating plate 15 and is connected to the conductor 8 disposed on the other side of the insulating plate 15 with respect to the earth contact. The insulating plate 15 is, in turn, fixed on the casing 6 by means of rods 17.
    The mechanical connection between the movable ground contact 18 and the displacement device 26 is lateral. For this, the partition 25 of the housing 24 comprises at least one longitudinal slot 28 through which the moving earth contact is mechanically connected to the displacement device.
    In the example shown and advantageously, the partition 25 of the housing 24 comprises two diametrically opposed longitudinal slots 28 and the second longitudinal end 18.2 of the moving earth contact 18 has a through bore 30 orthogonal to the Y axis, in which is mounted an axis 32 connected to the displacement device 26.
    This connection provides a balanced mechanical connection.
    The displacement device 26 is then disposed on the side of the assemblies E1, E2 and between the earth contacts as can be seen in FIGS. 3A and 3B. The longitudinal congestion of the earthing switch is then reduced, since the displacement device is in the boss 7. The distance between the fixed earth contacts 16 is given by the phase distance, which is fixed by the holding voltage of electrical equipment. At the position of the earth contacts, the voltage is reduced, so there is a free space between them. According to the invention, this free space is used to house the displacement device 26 and in particular the shafts 36 and 51 which will be described later.
    The mechanical connection between the axis 32 and the displacement device 26 is obtained, in the example shown, by means of an electrical insulating sleeve 34 surrounding the fixed earth contact 16 and around which it slides. The sleeve 34 advantageously has an inside diameter substantially equal to the outside diameter of the fixed earth contact 16 at the housing. The sleeve 34 is for example made of PET (polyethylene terephthalate), epoxy resin, or PTFE (Polytetrafluoroethylene) to ensure good guidance and good electrical insulation. Advantageously, the sleeve 34 electrically isolates the earth contact of the displacement device 26.
    Means are provided to prevent displacement of the axis 32 along its axis and ensure good maintenance of the moving earth contact 18 in the fixed earth contact 16. For this, the pin 32 is immobilized in the transverse bore 30 of the moving earth contact and in the socket 34.
    In FIG. 2B, one can see in detail an embodiment of the axis 32 in the sleeve 34. The axis 32 is formed by two pins 32.1, 32.2 each provided at one of their ends with a thread. The two pins pass through the bushing 34 on either side of the moving earth contact 18 and are screwed into a transverse bore formed in the second end 18.2 of the moving earth contact 18. The diameter of the pins 32.1, 32.2 allows the sliding of the axis 32 in the lights 28.
    Advantageously, the pins are each provided with a shoulder 33.1, 33.2 transversely fixing the fixed earth contact 16 in the housing 24. The movable ground contact 18 is then centered in the housing 24 guided by the sleeve 34 .
    The sleeve 34, besides the fact that it transmits the displacement in moving earth contact 18, electrically isolates the displacement device 26 from the movable ground contact 18 and the fixed earth contact 16. Moreover, it ensures a longitudinal guidance of the moving earth contact 18.
    In the example shown, the displacement device 26 is of the rod type transmitting a rotational movement provided by a drive shaft 36 in a translational movement along the Y axis of the moving earth contact. The drive shaft 36 passes through the casing 6 and is mechanically connected to an actuating mechanism (not shown) located outside the casing 6.
    The actuating mechanism can be of any type, it may be a spring mechanism, a hydraulic or electric servo. A spring actuating mechanism is for example described in EP 0 895 260 which is included by reference.
    The displacement device 26 comprises a lever 38 integral in rotation with the drive shaft 36 and a connecting rod 40 articulated in rotation on the moving earth contact and on the lever 38.
    Particularly advantageously, the shortest distance d in an open contact position between the axis of rotation of the drive shaft 36 and an axis X1 perpendicular to the longitudinal axis Y, orthogonal to the axis of rotation of the drive shaft 3 and passing through the axis of the spindle 32 is at most equal to 0.5 times the distance between the axis of rotation of the drive shaft 36 and the point of attachment lever 38 to the rod 40. This arrangement reduces the size of the displacement device.
    Advantageously and as can be seen in FIGS. 3A and 3B, a single displacement device 26 is used to move the three movable earth contacts 18, via a transversal bar 42 mechanically connecting the three movable earth contacts 18 and which the three movable earth contacts are secured in displacement .
    The spreader bar 42 extends substantially perpendicularly with respect to the Y axis and makes the three moving earth contacts 18 integral in movement. The link 40 is articulated in rotation on the spreader bar 42 which transmits the movement to the earth contacts mobile 18.
    In FIG. 4, one can see in detail an embodiment of the lifter 42.
    In the example shown, the lifter 42 defines three housings 46, one of which is visible in FIG. 4, crossed by the fixed earth contacts 16 and receiving the sockets 34 which are fixed in the housing 46.
    The housings 46 are delimited by two transverse plates 44 substantially parallel on either side of the three sets and two trays 45 each provided with a passage 47 for the passage of the fixed earth contact 16 crimped on the transverse plates 44.
    Advantageously and as shown, the bushings 34 comprise on their outer peripheral surface a central annular projection 48 delimiting at each longitudinal end sections of reduced diameter 50.
    The projection 50 is then received between the two plates 45, only the two sections of reduced diameter 50 through the holes 47. The sleeve 34 is then immobilized axially in the housing 46 in a simple and robust manner. In addition, thanks to this assembly, the transmission of the effort is carried out with a low surface pressure.
    Advantageously, the lateral edges of the trays 45 of the housing 46 are folded to make the lifter 42 more rigid.
    In the example shown, the transverse plates 44 are openwork which reduces the mass of the assembly.
    Advantageously and as shown in FIGS. 3A and 3B, the displacement device 26 comprises two sets of lever and connecting rod in order to have a balanced and uniform displacement of the three movable ground contacts 18.
    Advantageously, the displacement device 26 comprises a drive shaft 36 and a coupling shaft 51, the latter forming only an axis of rotation for the second lever 38 and the second connecting rod 40.
    A linkage 52 is provided between the two sets to couple their actuation and transmit the rotation of the drive shaft to the assembly 38 and 40.
    The linkage 52 comprises a coupling bar 54 at a first end of which a coupling lever 56 integral in rotation with the drive shaft 36 is articulated in rotation, and at the second end of which a coupling lever 58 integral in rotation with the coupling shaft 51 is articulated in rotation.
    The connecting rods 40 and 40 are articulated on the spreader bar 42 between the housings 46 of the bushings 34 so as to have a balanced action of the connecting rods 40, 40 on the spreader bar 42.
    This embodiment has the advantage of having only one shaft passing through the casing 6, which simplifies manufacturing, especially at the seals, and reduces the cost.
    It is understood that a three-phase earthing switch comprising a displacement device for each of the movable earth contacts is not beyond the scope of the present invention.
    One could also provide to have two actuators for the three movable earth contacts, each device comprising a drive shaft, a lever and a connecting rod, each connecting rod being articulated on the spreader.
    In FIG. 5, we can see another example of assembly between the displacement device and the fixed ground contact particularly suitable for single-phase electrical equipment. In this example, the rod 40 is hinged to one of the side plates 44, substantially at the longitudinal axis Y of the fixed earth contact.
    We will now explain the operation of the earthing switch according to the present invention.
    In normal operation of the electrical equipment, the electrical conductors are not connected to the earth. The earthing switch is in the position of fig. 3A.
    When it is desired to intervene on the apparatus, the power supply is cut off, the current no longer circulates in the conductors.
    For security purposes, it is desired to connect the conductors 8 to the ground.
    For this, it activates the actuating mechanism, it rotates the drive shaft 36 in the counterclockwise direction which pivots the lever 38 also in the counterclockwise direction, the rod 40 is then also driven downwards. Simultaneously, the coupling lever 56 is also counterclockwise moving the coupling bar 54 to the right, which pivots the coupling lever 58 counterclockwise about the coupling shaft 51, the lever 38 is then driven counterclockwise and the rod 40 moves down.
    The two connecting rods 40, 40 being articulated on the spreader bar 42, it is driven downwards, the three moving earth contacts 18 then move axially along the Y axis in contact with the phase contacts. . The actuation mechanism is activated until the free ends of the moving earth contacts 18 enter the phase contacts, as shown in FIG. 3B. The earthing switch is then closed and the conductors 8 are grounded.
    An electrical conductor path is established from the phase contact 10 via the tulip-shaped contact 14, the moving earth contact 18, the tulip-shaped contact 16.3 of the fixed earth contact 16 at the first contact end 16.1. fixed earth which is connected to a ground bar (not shown).
    The tapered contact 16.3 forms a mechanical guide for the moving earth contact 18. The moving earth contact 18 is also guided by the bushing 34 sliding around the fixed contact 16. At this guidance, forces lateral sides are applied by the displacement device 26.
    The guide surface of the tapered contact 16.3 is in mechanical contact with the outer surface of the moving earth contact 18. The guide surface of the sleeve 34, for its part, cooperates with the outer surface of the contact of Fixed ground 16. Thus, in case of abrasion due to the socket 34, the electrical contact between the moving earth contact 18 and the tulip-shaped contact is not degraded.
    To open the earthing switch, activate the actuating mechanism in the opposite direction, to move the drive shaft 36 in the clockwise direction. The levers 38, 38 then pivot in the clockwise direction causing upward movement of the connecting rods 40, 40 and therefore of the crossbar 42, separating the free ends of the moving earth contacts 18 of the phase contacts. The actuation mechanism is activated until the earthing switch resumes its rest position (Figure 3A).
    The earthing switch according to the present invention is particularly compact compared to those of the state of the art. Indeed, the lateral projection on the envelope of the electrical equipment is reduced because of the lateral connection and the structure particularly transmission means between the actuating mechanism and the movable contacts.
    In addition, all the elements constituting the earthing switch is integral with the lateral boss, which allows a simplified assembly of the entire earthing switch, and also a simplified disassembly thereof.
    In addition, the realization of seals is simplified, since it limits the areas where such a seal is necessary. In addition, mounting in a single subassembly of the earthing switch requires to realize in the final assembly that the seal between the boss flange and the flange of the tubular part of the apparatus, which is a static seal.
    With the present invention, the portion of the moving earth contact intended to come into contact with the phase contact is not used for its axial guidance, which avoids the risk of wear that could degrade the electrical contact.
    In addition, the movable earth contact or contacts are guided over the entire length of the housing or the fixed earth contacts, the guidance thus obtained is very accurate.
    In addition, this earthing switch is easily adaptable to other geometric configurations of the electrical equipment.
    Moreover, the displacement device is particularly compact, especially in the direction of movement of the moving parts. The required volume of insulating gas is reduced. Furthermore, the implementation of a spreader with two sets of lever and connecting rod ensures a homogeneous and stable movement of the three moving earth contacts, limiting the risk of biasing.
    In addition, the fact of having a displacement of the movable ground contact or contacts transverse relative to the boss, the travel of the moving earth contact, the length of the fixed earth contact and the length of the phase contact are not not limited by the diameter of the boss flange.
    It is understood that one could provide to secure the fixed earth contact to the displacement device by making only one longitudinal lumen in the fixed earth contact.
    In addition in the case of an earthing switch for three-phase switchgear, the lifter may have only a transverse plate on which the housing would be fixed.
    In the case of a single-phase electrical equipment, the earthing switch is similar to that described in the case of a three-phase switchgear, in particular concerning the connection between the bushing and the moving earth contact, the earth contact. mobile and the sleeve can be traversed by an axis, and regarding the connection between the sleeve and the connecting rod, the sleeve can be immobilized between two horizontal plates, themselves connected by a transverse plate on which is articulated a connecting rod.
    权利要求:
    Claims (17)
    [1]
    1. Earthing disconnector comprising at least one fixed earth contact (16), a moving earth contact (18) and a phase contact (10), said fixed (16), movable (18) and phase earth contacts being substantially aligned along a longitudinal axis (Y), the moving earth contact (18) being movable along the longitudinal axis (Y) to approach to contact the contact of phase or away from it, the fixed earth contact (16) being intended to be fixed to the casing (6) of a metal-enclosed electrical equipment filled with a dielectric gas under pressure and to be connected to earth, the moving earth contact (18) being in electrical contact with the fixed earth contact (16), the movable earth contact (18) being slidable in the fixed earth contact (16) along the longitudinal axis (Y), said fixed earth contact (16) having a housing (24) of longitudinal axis (Y) open at one end opposite the phase contact, in which the movable ground contact (18) is mounted, the wall (25) of said housing (24) having two longitudinally extending slots (28) being diametrically opposed to enable establishing a lateral mechanical connection between the movable earth contact (18) and a transmission system connected to an actuating mechanism for actuating the earthing switch, said mechanical connection being made via a sleeve of dielectric material (34) slidably mounted around the fixed earth contact (16).
    [2]
    2. Earthing switch according to claim 1, wherein the movable earth contact (18) comprises at a longitudinal end opposite to that intended to come into contact with the phase contact, a transverse bore (30) traversed by an axis ( 32) solidarisant the moving earth contact (18) and the sleeve (34), said axis (32) passing through the two slots (28).
    [3]
    The earthing switch according to claim 1 or 2, wherein the fixed earth contact (16) has a solid rod portion for passing through the casing and a hollow stem end defining the housing (24).
    [4]
    4. Earthing switch according to one of claims 1 to 3, comprising two plates (45) drilled parallel to each other and perpendicular to the longitudinal axis (Y) connected by two parallel side plates, the fixed earth contact (18). through the two plates (45), the sleeve (34) having a median annular projection defining two end portions of reduced section, the annular projection of the sleeve (34) being immobilized between the two plates (45), the system of transmission being intended to be articulated on the side plates (44).
    [5]
    5. Earthing switch according to one of claims 1 to 4 for three-phase electrical equipment comprising three sets (E1, E2, E3) of fixed earth contacts (16), mobile (18) and phase.
    [6]
    The earthing switch according to one of claims 1 to 5, wherein the end of the fixed earth contact (16) in contact with the moving earth contact (18) comprises a tulip shaped contact element, and the phase contact is also shaped like a tulip.
    [7]
    7. Earthing switch according to one of claims 1 to 6, wherein the fixed earth contact (s) (16) is or is previously mounted on a cover (7) intended to be fixed in a sealed manner on the envelope (6).
    [8]
    8. Metal-enclosed electrical equipment filled with a dielectric gas under pressure comprising an earthing switch according to one of claims 1 to 7, at least one electrical conductor (8) on which the phase contact is mounted and a control system. transmission of a movement connected to an actuating mechanism disposed outside the casing (6).
    [9]
    9. Electrical apparatus according to claim 8, wherein the conductor (8) extends along an axis (X) orthogonal to the longitudinal axis (Y) of the fixed earth contact for aligning the fixed earth contacts. (16) and mobile (18) and phase contact.
    [10]
    10. Electrical apparatus according to one of claims 8 or 9, wherein the fixed earth contact (16) is electrically isolated from the transmission system, for example by the sleeve (34).
    [11]
    Electrical equipment according to one of claims 8 to 10, wherein the transmission system comprises a drive shaft (36) passing through the casing (6) and connected to the actuating mechanism, said drive shaft ( 36) being intended to be rotated about its axis, a lever (38) rotatably connected to the drive shaft (36) and a link (40) rotatably articulated on the lever (38) and on the moving earth contact (18) via an axis (32).
    [12]
    Electrical apparatus according to claim 11, wherein the drive shaft (36) is orthogonal to the longitudinal axis of the fixed earth contact (16) and the shortest distance (d) in an open contact position between the axis of rotation of the drive shaft (36) and an axis (X1) perpendicular to the longitudinal axis (Y) of the fixed earth contact, orthogonal to the axis of rotation of the drive shaft (36) and passing through the axis (32) through which the rod (40) is articulated in rotation on the moving earth contact (18) is at most equal to 0.5 times the distance between the axis rotation of the drive shaft (36) and the point of attachment of the lever (38) to the connecting rod (40).
    [13]
    13. Electrical equipment according to one of claims 8 to 12, said apparatus being three-phase and having three electrical conductors (8), the earthing switch being an earthing switch according to one of claims 5 to 7.
    [14]
    The three-phase electrical apparatus according to claim 13, wherein the three movable earth contacts (18) are integral in motion along the longitudinal axis (Y) of the fixed earth contact.
    [15]
    15. Electrical apparatus according to one of claims 13 or 14 and claim 11, wherein the three movable contacts are mounted in a crossbar, the connecting rod (40) of the transmission system being articulated on said crossbar (42).
    [16]
    16. Electrical equipment according to one of claims 9 to 15 and according to claim 11, comprising a second lever (38) integral in rotation with a coupling shaft (51) parallel to the drive shaft (36). a second link (40) articulated between the second lever (38) and a side plate (44), and a coupling linkage (52) between the drive shaft (36) and the coupling shaft ( 51).
    [17]
    Electrical apparatus according to claim 16, wherein the coupling linkage (52) is formed by a first coupling lever (56) rotatably connected to the drive shaft (36) and a second coupling lever (58). ) rotatably connected to the coupling shaft (51) and a coupling bar (54) articulated in rotation on the first and second coupling levers (56, 58).
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1652278B1|2010-05-26|Three-position ground switch
    EP1946348B1|2009-12-30|Ground disconnect switch and method for making same
    EP2178099B1|2011-10-05|High- or medium-voltage electrical switching apparatus with two switches comprising driving means shared with the mobile contacts of the switches
    EP1128509A1|2001-08-29|Three-position switch with an axially movable switching element
    EP1139368B1|2009-03-11|Electrical multiphase interrupting device with a driving mechanism and switching modules
    WO2010043604A1|2010-04-22|Electric switching apparatus provided with two switches, such as a busbar sectionalising switch and an earthing switch, and including a driving means common to the mobile contacts of the switches
    EP0094858A1|1983-11-23|Operating device for the poles of a high-voltage multi-pole circuit breaker
    EP2513934B1|2015-04-22|Gasinsulated metalenclosed hv or mv switchgear comprising a rotary drive shaft that drives a mobile contact with improved assembly thereof, application to three phase gis
    EP1507274B1|2006-10-04|Earthing switch
    EP2144261B1|2014-06-11|Cut-off device for separating or connecting two parts of an electric circuit, including a voltage transformer
    EP2575155B1|2019-09-04|Medium-voltage electric distribution apparatus
    CH705205B1|2016-09-30|earthing switch to compact.
    EP2178100B1|2011-11-30|Electrical switching apparatus equipped with two switches, such as a busbar section isolator and an earthing switch and comprising driving means shared with the mobile contacts of the switches
    EP1111748A1|2001-06-27|Interconnection system between medium or high voltage switchgear cubicles
    FR2959616A1|2011-11-04|Three-phase pressurized gas-insulated metal-enclosed switchgear, has displacement device comprising lever rotatably connected to drive shaft, and connecting rod rotatably articulated on lever and mobile grounding contact of earthing switch
    FR2920251A1|2009-02-27|Current interrupting device for e.g. contactor, has sheath extended by cylindrical part defining transmission part, and strips fitted in groove formed in cylindrical part extending sheath irrespective of position in movement of control part
    CH705209B1|2016-03-15|Bushing for electric metal-enclosed switchgear and disconnector assembly for grounding to improved mechanical retention.
    FR2662300A1|1991-11-22|Circuit breaker
    FR3029681A1|2016-06-10|HIGH VOLTAGE CIRCUIT BREAKER WITH DEPORTEE CONTROL WITH REDUCED INERTIA
    WO2014191498A1|2014-12-04|Improved sectioning device and electrical substation with gas insulation comprising such a device
    FR2850494A1|2004-07-30|Current interruption for overhead power lines, uses offset planes for two end phases and center phase bushings entering and leaving interrupter to shorten interrupter unit
    FR2563662A1|1985-10-31|Electrical connector which can be automatically unplugged
    FR2551262A1|1985-03-01|HF COAX SWITCH
    同族专利:
    公开号 | 公开日
    WO2011135034A1|2011-11-03|
    CN102959668B|2016-10-12|
    FR2959592A1|2011-11-04|
    CN102959668A|2013-03-06|
    FR2959592B1|2012-11-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE670154C|1936-01-15|1939-01-12|Aeg|Circuit breaker in the manner of a sliding disconnector|
    JPH0134487Y2|1981-05-27|1989-10-20|
    JPS58196511U|1982-06-22|1983-12-27|
    JPS61141733U|1985-02-22|1986-09-02|
    JPS62107611A|1985-11-01|1987-05-19|Mitsubishi Electric Corp|Grounding switch of collective three-phase gas insulated switchgear|
    JPS62107611U|1985-12-26|1987-07-09|
    JPH0833135A|1994-07-20|1996-02-02|Meidensha Corp|Gas insulated switchgear|
    FR2766960B1|1997-07-31|1999-09-24|Gec Alsthom T & D Ag|QUICK CONTROL DEVICE FOR A HIGH VOLTAGE CONNECTION APPARATUS, IN PARTICULAR AN EARTH ISOLATOR|
    CN200990482Y|2006-09-29|2007-12-12|希捷爱斯（上海）电气有限公司|Direct acting three-station switch|
    JP4869043B2|2006-11-30|2012-02-01|三菱電機株式会社|Ground switch|
    CN201425917Y|2009-06-04|2010-03-17|北京清畅电力技术股份有限公司|Vacuum fixed sealing switch|CN104835674B|2015-04-30|2017-12-22|国家电网公司|A kind of operating mechanism and the Direct Action Type earthed switch using the operating mechanism|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR1053265A|FR2959592B1|2010-04-28|2010-04-28|GROUND DISCONNECT WITH REDUCED SIZE|
    PCT/EP2011/056760|WO2011135034A1|2010-04-28|2011-04-28|Compact ground isolator|
    [返回顶部]