EP3309810B1 - Agencement de commutation - Google Patents

Agencement de commutation Download PDF

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Publication number
EP3309810B1
EP3309810B1 EP17191726.3A EP17191726A EP3309810B1 EP 3309810 B1 EP3309810 B1 EP 3309810B1 EP 17191726 A EP17191726 A EP 17191726A EP 3309810 B1 EP3309810 B1 EP 3309810B1
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EP
European Patent Office
Prior art keywords
switching
switching contact
piston
cylinder
contact pieces
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
EP17191726.3A
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German (de)
English (en)
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EP3309810A1 (fr
EP3309810C0 (fr
Inventor
Christian Dengler
Sascha FRÖBEL
Markus Schmidtke
Andreas Groiss
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
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Publication of EP3309810A1 publication Critical patent/EP3309810A1/fr
Application granted granted Critical
Publication of EP3309810B1 publication Critical patent/EP3309810B1/fr
Publication of EP3309810C0 publication Critical patent/EP3309810C0/fr
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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the invention relates to a switching arrangement having a blowing device and a contact set with a first switching contact having a first and a second switching contact piece, a switching path extending at least at times between the switching contact pieces of the first switching contact and with a second switching contact having a first and a second switching contact piece, wherein a switching path extends at least temporarily between the switching contact pieces of the second switching contact and a blowing volume of the blowing device serves both the first and the second switching contact, the plurality of switching contacts being arranged electrically insulated from one another, so that electrical potentials/currents that deviate from one another can be switched in the switching contacts and the blowing device has a volume-displacing piston-cylinder arrangement, wherein at least one switching contact piece, in particular switching contact pieces of the first and second switching contacts, is/are arranged on the piston-cylinder arrangement.
  • Such a switching arrangement is, for example, from the Patent Application Publication US 2016/0049269 A1 known.
  • a switching arrangement is described there, which has a contact set with a first and a second switching contact piece.
  • the two switching contact pieces of the contact set are movable relative to one another, so that a switching path extends at least temporarily between the switching contact pieces.
  • One of the switching contact pieces is designed to be hollow in sections, so that a blowing device can be formed using this switching contact piece. Due to the use of the first switching contact piece, the volume available for blowing the switching path is limited by the dimension of the switching contact piece. Especially when mastering more powerful ones Switching operations can cause the known blowing device to reach its performance limits.
  • the document DE 563 461 An electrical switch can be removed that has a double interruption. When compressed air is supplied, the bridge-like double interruption is actuated using compressed air. From the US 3,214,553 shows a gas pressure switch which uses a high-pressure gas volume to actuate a double interruption. The disclosure document DE 28 01 401 A1 A compressed gas switch can be removed, which provides air flow to a switching point during a movement. Furthermore, from the US patent US 2,979,591 a circuit breaker is known, which flows through a double interruption using a pump device. The Patent Specification GB 519.113A Switching devices with switching arrangements according to the preamble of claim 1 can be found, which have a piston-cylinder arrangement for supplying flow to a switching point.
  • a housing of the respective switching device is used as a cylinder, within which a piston crossing the housing is movably arranged.
  • DE 1156473 which also discloses a switching arrangement according to the preamble of claim 1 1, it is known to arrange a piston-cylinder arrangement within a housing of a switching device, whereby switching and flow to a switching point can be carried out by a joint movement of a piston of the piston-cylinder arrangement with contact arms.
  • the object of the invention is therefore to provide a switching arrangement of the type mentioned at the outset, which also masters powerful switching operations.
  • the object is achieved in a switching arrangement of the type mentioned at the outset in that a cylinder of the piston-cylinder arrangement is part of a kinematic chain for causing a relative movement of the switching contact pieces.
  • a switching arrangement with a set of contacts is intended to interrupt a switching path or to bridge a switching path.
  • the contact set can have at least a first switching contact and a second switching contact.
  • Each of the switching contacts has a first and second switching contact piece.
  • a switching path can extend at least temporarily between the switching contact pieces of a switching contact.
  • the impedance of the switching path can be changed to switch the switching arrangement on or off.
  • the switching path can, for example, be mechanically bridged or its impedance can be changed in some other way.
  • the switching path can also be bridged using an arc. In a simple case, a relative movement of the switching contact pieces of the respective switching contact can be provided to bridge the switching path.
  • At least one of the switching contact pieces can be arranged to be movable, whereas the other switching contact piece of the respective switching contact can be arranged to be stationary.
  • both the first and the second switching contact piece are designed to be movable or drivable, so that a movement is coupled into both the first switching contact piece and the second switching contact piece to trigger a switching process.
  • the multiple switching contacts of a contact set are arranged in an electrically insulated manner from one another. This makes it possible to switch electrical potentials/currents that differ from one another in the switching contacts.
  • Various types of devices can be used as a switching arrangement. For example, circuit breakers and earthing switches can function as a switching arrangement. However, it can also be provided that load switches or circuit breakers serve as a switching arrangement.
  • the switching contact pieces of the respective switching contact have combined arcing and main contacts are. This makes it possible to structure the switching contact pieces in a simple manner. If necessary, sections of the switching contact pieces can be equipped with a erosion-resistant material. This allows low-mass and low-impedance switching contact pieces to be formed.
  • a switching contact piece can, for example, be designed in the form of a socket or a bolt.
  • a bolt-shaped switching contact piece can also be essentially tubular, for example.
  • a blowing device makes it possible to blow the switching path with a fluid flow during a switching operation, i.e. while bridging a switching path and/or while producing a switching path, and to remove any contaminants located in the switching path.
  • the blowing device can preferably drive a gaseous fluid. However, it can also be provided that the blowing device drives a liquid fluid. Fluorine-containing fluids are particularly suitable for flowing through the contact sets.
  • blowing device can be designed differently from the switching contact pieces, so that the power of the blowing device can be adjusted without having to intervene in the structure of a contact piece. From the blowing device, a fluid flow can be sent to the contact set, in particular into the area of the switching path, by means of a blow-out channel. be directed.
  • a central arrangement of the blowing device can be provided, whereby a fluid flowing out of the blowing device can be directed into the area of the switching contacts via a blow-out channel.
  • the switching arrangement can preferably comprise a contact set which has a first, a second and a third switching contact.
  • known three-phase electrical energy transmission systems can also be connected to a switching arrangement according to the invention.
  • the switching contact pieces of the respective switching contacts of the contact set can each be constructed in the same way. This results in cost advantages in terms of design and production.
  • a blowing volume of the blowing device can be easily adjusted in volume due to the separation of the switching function and the blowing function.
  • the blowing volume can hold a compressed fluid or compress the fluid so that the fluid can flow out of the blowing device in the direction of the contact set due to a pressure difference. It can be provided that a fluid flow is divided among several switching contacts.
  • the blowing device has a volume-displacing piston-cylinder arrangement, with at least one switching contact piece, in particular switching contact pieces of the first and second switching contacts, being/are arranged on the piston-cylinder arrangement.
  • a volume-displacing piston-cylinder arrangement has the advantage that a pressure difference can be repeatedly generated in the piston-cylinder arrangement, so that a fluid flow can be generated in a simple manner.
  • a pressure difference can be created by a relative movement of a piston to a surrounding cylinder.
  • the relative movement of a piston and a cylinder of the piston-cylinder arrangement can be synchronized with a switching process (e.g. a switching movement) of the contact set, so that a differential pressure of a fluid only occurs as needed Piston-cylinder arrangement is created. This prevents excess pressure fluid from being retained over longer periods of time.
  • At least one of the switching contact pieces in particular functionally identical switching contact pieces of the first and second switching contact, can be arranged on the blowing device.
  • the switching contact pieces can be arranged on the piston or on the cylinder or on the piston and the cylinder, in particular supported by them.
  • a further advantageous embodiment can provide that at least one switching contact piece is attached to a wall of the piston-cylinder arrangement, in particular inserted into a wall of the piston-cylinder arrangement.
  • a wall in/on which a switching contact piece is inserted/attached can preferably limit the blowing volume of the piston-cylinder arrangement.
  • the switching contact piece inserted/attached to the wall is positioned close to the blowing volume, so that a flowing fluid can be transported from the blowing volume to the switching contact pieces over short distances.
  • the switching contact piece can be at least partially supported by the piston-cylinder arrangement, in particular by a wall.
  • At least one switching contact piece passes through a wall of the piston-cylinder arrangement.
  • a switching contact piece can pass through a wall of the piston-cylinder arrangement. This makes it possible for the switching contact piece to be accessible both within the blowing volume (volume displacement range) and outside the piston-cylinder arrangement. This means both inside the piston-cylinder arrangement and outside the piston-cylinder arrangement an electrical potential of the switching contact piece can be tapped. Furthermore, the switching contact piece can stabilize the piston-cylinder arrangement. For example, the switching contact piece can be used to support, guide, etc. the piston-cylinder arrangement.
  • a blow-out channel extends at least partially through a switching contact piece.
  • a blow-out channel serves to guide a fluid which is to be directed in the direction of a switching path of a contact set. If you now use the switching contact piece to at least partially form the blow-out channel, it is possible to direct the fluid emerging from the blow-out channel or to be transferred via the blow-out channel into the immediate vicinity of the switching path and thus to carry out efficient blowing of the switching path. For example, it is possible to cool the switching path or to clear the switching path of foreign substances such as combustion products, etc. and to promote dielectric solidification of the switching path.
  • the switching contact pieces can, for example, be designed like a hollow cylinder, with the hollow cylindrical channel serving as a blow-out channel to guide the fluid.
  • the switching contact pieces can advantageously have a mouth opening of the blowing channel within the blowing volume (volume displacement range) of the blowing device and/or have a mouth opening in the area of the switching path.
  • a mouth opening of the blowing channel within the blowing volume (volume displacement range) of the blowing device and/or have a mouth opening in the area of the switching path.
  • short paths for a fluid to be conveyed through a switching contact piece can be realized and efficient blowing of the switching path can take place.
  • a further advantage of delimiting a blow-out channel at least partially by a switching contact piece is that the switching contact piece can be cooled via a fluid located in the blow-out channel. This makes it possible to conduct heat out of the switching contact pieces in an improved manner.
  • a further advantageous embodiment can provide that at least a section of a wall of the piston-cylinder arrangement has an electrically insulating effect.
  • An electrically insulated design of at least sections of the piston-cylinder arrangement makes it possible to position the blowing device in the vicinity of a switching path and thereby maintain the dielectric strength of the switching path.
  • the electrically insulating section of a wall can be used to support a switching contact piece.
  • the piston-cylinder arrangement can also serve to space several switching contact pieces apart from one another in an electrically insulated manner and thus support positioning or alignment of the contact set.
  • a piston or a cylinder, in particular a cylinder base of the piston-cylinder arrangement can be made at least in sections from electrically insulating material.
  • cast cylinders or cast pistons which are made from electrically insulating material using the casting process, have proven to be advantageous.
  • electrically insulating sections of the piston-cylinder assembly can be formed by casting resins or the like.
  • a cylinder of the piston-cylinder arrangement is part of a kinematic chain for causing a relative movement of the switching contact pieces.
  • a relative movement of the switching contact pieces it is possible to switch the switching arrangement on or off.
  • a cylinder of a piston-cylinder arrangement is now used in the blowing device to form a kinematic chain, ie to transmit drive energy from a drive device to a switching contact piece, a compact switching arrangement can be formed.
  • at least of sections of a wall of the piston-cylinder arrangement In this way, a potential separation of the contact set of the switching arrangement can be established compared to a drive device for the switching arrangement.
  • the piston-cylinder arrangement into a kinematic chain, it can be ensured that synchronous movement of the contact set and the piston-cylinder arrangement is carried out during a switching operation.
  • a further advantageous embodiment can provide that the piston-cylinder arrangement has a substantially rectangular cross section.
  • a rectangular cross section has the advantage that a flat piston-cylinder arrangement can be formed, with the switching contact pieces of a contact set being able to be arranged distributed in the rectangular cross section. This can ensure that the switching contact pieces of the contact set are sufficiently spaced apart from one another.
  • the switching contact pieces of a contact set can be aligned on a line and spaced apart.
  • the line can extend parallel to a body edge of the essentially rectangular cross section.
  • the switching contact pieces can be aligned essentially perpendicular to the rectangular cross section.
  • the rectangular cross section is preferably defined in that the piston surface is rectangular.
  • a compression volume volume displacement area, blowing volume
  • the cylinder base can preferably have a rectangular cross section.
  • a further advantageous embodiment can provide that the piston-cylinder arrangement is at least partially supported on a damping device.
  • shocks can occur in the system depending on the speed of a relative movement.
  • a damping device can be assigned to the piston and/or the cylinder.
  • a damping device can act as a stop in an end position of a movement.
  • the piston is mounted in a stationary manner, with the mobility of the cylinder relative to the piston being limited by a damping device. This means that when the piston and cylinder move relative to one another, the force effect can be dampened when there is a force effect between the piston and cylinder.
  • a force effect can occur, for example, when the piston and cylinder strike or even when an impulse is transmitted between the piston and cylinder when a fluid is compressed in the piston-cylinder arrangement.
  • a support function through the damping device can also only be present temporarily.
  • a damping device can support the piston and/or the cylinder in rest positions (e.g. an end position).
  • both the moving and stationary parts of the piston-cylinder arrangement are supported via a damping device, possibly a common damping device.
  • a further advantageous embodiment can provide that the switching contacts are surrounded by an electrically insulating fluid which is enclosed within an encapsulation housing.
  • An encapsulating housing has a fluid receiving space within which an electrically insulating fluid can be enclosed.
  • the fluid receiving space is through the encapsulation housing is hermetically sealed, so that volatilization of the electrically insulating fluid is counteracted.
  • the switching contacts of the switching arrangement can then be arranged within the electrically insulating fluid, i.e. surrounded by the electrically insulating fluid. It is therefore possible to surround the switching contacts or the contact set with an electrically insulating fluid.
  • the encapsulation housing can be designed as a pressure container, so that the electrically insulating fluid in the fluid receiving space has an overpressure or a negative pressure compared to the surroundings.
  • drive energy for moving a switching contact piece is transmitted through the encapsulation housing into the interior of the encapsulation housing.
  • a movement generated outside the encapsulation housing can be transmitted into the interior of the encapsulation housing via the kinematic chain.
  • a sealed passage of the kinematic chain through a wall of the encapsulation housing can be provided.
  • a fluid-tight entry or passage of a shaft of the kinematic chain can be provided by means of shaft seals.
  • the drive energy is transmitted through the encapsulation housing into the interior, for example by means of electric or magnetic fields, so that energy is available there to carry out a switching operation.
  • Figures 1 , 2 , 3 and 4 a first embodiment variant of a switching arrangement is shown.
  • Figures 1, 2 and 3 each show sectional views.
  • the Figure 4 shows a perspective view with partial cutouts.
  • the first embodiment variant of a switching arrangement has a contact set 1.
  • the contact set 1 has a first switching contact 2, a second switching contact 3 and a third switching contact 4 (see also Figures 2 , 3 and 4 ).
  • Each of the switching contacts has a first switching contact piece 3a, 3b, 3c and a second switching contact piece 4a, 4b, 4c.
  • the first switching contact pieces 3a, 3b, 3c and the second switching contact pieces 4a, 4b, 4c of the first switching contact 2, the second switching contact 3 and the third switching contact 4 are each constructed in the same way.
  • the first switching contact pieces 3a, 3b, 3c are bolt-shaped, with the second switching contact pieces 4a, 4b, 4c being socket-shaped.
  • the second switching contact pieces 4a, 4b, 4c are mounted in a stationary manner, with the socket openings of the second switching contact pieces 4a, 4b, 4c being shaped in a shape complementary to the circumference of the respectively assigned first switching contact pieces 3a, 3b, 3c.
  • the second switching contact pieces 4a, 4b, 4c each have elastically resilient contact fingers to form the socket opening.
  • the first contact pieces 3a, 3b, 3c are mounted movably.
  • the first switching contact pieces 3a, 3b, 3c are designed to be linearly displaceable, with bolt longitudinal axes of the first switching contact pieces 3a, 3b, 3c being aligned essentially parallel to a displacement axis 5.
  • the first switching contact pieces 3a, 3b, 3c are coupled to a kinematic chain for movement.
  • the kinematic chain serves to transmit a movement from a drive device (not shown) to the first switching contact pieces 3a, 3b, 3c in order to effect a displacement of the switching contact pieces 3a, 3b, 3c along the displacement axis 5.
  • the kinematic chain has a drive shaft 6 for this purpose.
  • the drive shaft 6 is mounted on an encapsulation housing 7, which accommodates the contact set 1 in its interior (fluid receiving space).
  • the encapsulation housing 7 has, for example, electrically conductive sections and electrically insulating zones in sections, in order, for example, to guide connecting lines 8 for electrically contacting the first and second switching contact pieces 3a, 3b, 3c, 4a, 4b, 4c through the encapsulation housing 7. It is provided that the drive shaft 6 also passes through a wall of the encapsulation housing 7.
  • the drive shaft 6 is rotatably mounted and in the encapsulation housing 7 via a radial shaft seal sealed fluid-tight.
  • a crank arm 9 is arranged in an angle-rigid manner on the drive shaft 6 in the fluid receiving space.
  • the crank arm 9 transmits a rotary movement to a cylinder 10, which is mounted displaceably along the displacement axis 5.
  • the cylinder 10 is mounted on a guide element 11, so that the cylinder 10 can be guided linearly along the guide element 11.
  • the guide element 11 is essentially circular-cylindrical, with the cylinder axis being aligned longitudinally or parallel to the displacement axis 5.
  • the guide element 11 is mounted in a stationary manner on the encapsulation housing 7 at the end.
  • To guide the cylinder 10, the cylinder 10 has a guide sleeve 12.
  • the guide element 11 passes through the guide sleeve 12 of the cylinder 10.
  • a piston 13 is arranged surrounded by the cylinder 10.
  • the piston 13 is shaped to complement the cross section of the cylinder 10 and lies sealingly against the cylinder 10 on the inside wall.
  • the piston 13 slidably supports the cylinder 10 so that it can be axially displaced.
  • a damping device 14 is arranged on the guide element 11.
  • the damping device 14 serves as a stop which limits movement of the cylinder 10 during a switch-on process.
  • the guide sleeve 12/the cylinder 10 can strike the damping device 14.
  • the damping device 10 is encompassed by the cylinder 10.
  • a further damping device 15 is arranged, which offers a stop for the cylinder 10, in particular for the guide sleeve 12 of the cylinder 10, so that a striking of the guide sleeve 12 on the further damping device 15 is dampened by the further damping device 15 during a switch-off process.
  • the cylinder 10 On the front side, the cylinder 10 is closed by a cylinder base 16 at the end facing away from the guide sleeve 12.
  • the cylinder base 16 carries the first switching contact pieces 3a, 3b, 3c.
  • the first switching contact pieces 3a, 3b, 3c protrude through the cylinder base 16 in the direction of the displacement axis 5.
  • the first switching contact pieces 3a, 3b, 3c each have a collar 17, which lies on a side of the cylinder base 16 facing away from a volume displacement region (blow volume) 18 of the piston-cylinder arrangement 10, 13. With a connecting lug 19 in between, the collars 17 press against the cylinder base 16.
  • the ends of the first switching contact pieces 3a, 3b, 3c facing away from the second switching contact pieces 4a, 4b, 4c protrude into the volume displacement region 18.
  • the positions of the first switching contact pieces 3a, 3b, 3c are each secured with a nut 20.
  • Connection lines 8 are electrically contacted with the connection lugs 19, so that an electrical connection of the first switching contact pieces 3a, 3b, 3c via the connection lines 8 is possible.
  • the connecting lines 8 on the first switching contact pieces 3a, 3b, 3c can be designed to be flexibly deformable.
  • the connecting lines 8 of the second switching contact pieces 4a, 4b, 4c can carry ground potential, so that the switching arrangement can be used as a grounding switch.
  • the cylinder 10 with its guide sleeve 12 and the cylinder base 16 can each be made of electrically insulating material. This makes it possible to achieve electrical insulation of the drive shaft 6 or the crank arm 9 from the first switching contact pieces 3a, 3b, 3c.
  • the piston 13 also has an electrically insulating effect.
  • the volume displacement area 18 is also electrically insulating Fluid filled.
  • a blow-out channel 21 enables the fluid to communicate within the volume displacement region 18 and outside the volume displacement region 18.
  • the blow-out channel 18 extends along the longitudinal axis of the switching contact pieces 3a, 3b, 3c, i.e. along the displacement axis 5 through the first switching contact pieces 3a, 3b, 3c.
  • a switch-on movement can be initiated by rotating the drive shaft 6 counterclockwise, the first switching contact pieces 3a, 3b, 3c being brought closer to the second switching contact pieces 4a, 4b, 4c and finally being inserted into the second switching contact pieces 4a, 4b, 4c.
  • the damping device 14 dampens impulses that can occur during a switch-on process.
  • the cylinder 10 together with the guide sleeve 12 and the cylinder base 16 are part of the kinematic chain, which transmits a driving force to cause a relative movement of the switching contact pieces 3a, 3b, 3c, 4a, 4b, 4c of the switching contacts 2, 3, 4 of the contact set 1 is used.
  • the first switching contact pieces 3a, 3b, 3c are arranged on the cylinder 10 or on the cylinder base 16 of the cylinder 10 and are supported by it.
  • the Figure 2 shows a top view of the first embodiment variant as shown in the Figure 1 known, with an off state as in the Figure 1 shown, taken.
  • the switching contacts 2, 3, 4 with theirs each first switching contact pieces 3a, 3b, 3c and second switching contact pieces 4a, 4b, 4c.
  • the switching contacts 2, 3, 4 are arranged essentially in a plane, with the displacement axis 5 lying in the plane or arranged parallel to the plane (cf. Figures 1 and 4 ).
  • the cylinder 10 or the piston 13 has a substantially rectangular cross section, so that a relatively flat arrangement of a switching arrangement can be formed (cf. Fig. 4 ).
  • the fluid located there is driven via the blow-out channels 21 of the first switching contact pieces 3a, 3b, 3c in the direction of the stationary second switching contact pieces 4a, 4b, 4c.
  • a fluid flow flows through the isolating paths of the respective switching contacts 2, 3, 4, so that contaminants located in the area of the switching path are flushed out.
  • the switching path is cooled by the inflowing fluid, which is particularly advantageous if a switching arc occurs. This allows the switching arc to be blown and cooled, which encourages the switching arc to go out.
  • the guide sleeve 12 detaches from the damping device 14, with the guide sleeve 12 approaching the further damping device 15.
  • the guide sleeve 12 approaches the further damping device 15 and strikes against it, with the further damping device 15 dampening and limiting the movement of the cylinder 10.
  • the Figure 4 shows the ones from the Figures 1 and 2 known switch-off position of the contact set 1.
  • a perspective view has now been chosen in order to make the rectangular cross section of the piston 13 or the cylinder 10 (the cylinder base 16) stand out more clearly.
  • the rectangular cross section of the piston 13 also creates a substantially cuboid volume displacement region 18. Only in the area of the cylinder base 16 is a projection of this essentially cuboid volume displacement area 18 selected in order to enable simplified assembly.
  • the first embodiment variant of a switching arrangement shown is in the Figures 5 and 6 each shown in a perspective view of a second embodiment variant and a third embodiment variant of a switching arrangement.
  • the elements that have the same effect in the figures are provided with the same reference numbers.
  • the second and third embodiment variants differ from the first embodiment variant in how fluid emerging from a volume displacement region 18 is guided.
  • a cylinder 10a is selected, which has a substantially circular cross section.
  • the cylinder 10a with a piston 13a of complementary shape is arranged in a support frame 22, the support frame 22 serving to support the first switching contact pieces 3a, 3b, 3c.
  • the first switching contact pieces 3a, 3b, 3c and the second switching contact pieces 4a, 4b, 4c are also in the second and third embodiment variants according to Figures 5 and 6 with the switching contact pieces 3a, 3b, 3c, 4a, 4b, 4c of the Identical to the first embodiment variant.
  • the support frame 22 is provided in order to transmit a movement from the drive shaft 6 to the first switching contact pieces 3a, 3b, 3c.
  • the support frame 22 is designed to be electrically insulating.
  • the support frame 22 has an end plate 22a, to which the first switching contact pieces 3a, 3b, 3c are attached.
  • the first switching contact pieces 3b of the second switching contact 3 opens, analogously to the first embodiment variant, in a volume displacement region 18.
  • the blow-out channels 21 of the first switching contact pieces 3a are , 3c of the first and third switching contacts 2, 4 are closed in a fluid-tight manner on their ends facing away from the respective second switching contact piece 4a, 4c.
  • the first switching contact piece 3b of the second switching contact is arranged opening into a volume displacement region 18 in a manner analogous to the first embodiment variant.
  • Channels 23 are arranged in the end plate 22a, which on the one hand open into the volume displacement region 18.
  • the channels 23 are designed in such a way that lateral surfaces of the first switching contact pieces 3a, 3c of the first and third switching contacts 2, 4 lie in the channels 23. Jacket-side openings are made in these lateral surfaces in order to connect the respective blow-out channel 21, which is located inside the first switching contact pieces 3a, 3b, 3c of the first or third switching contact, to the volume displacement region 18 via the channels 23.
  • communication of the volume displacement area 18 of the second embodiment variant of a switching arrangement can now take place in an analogous manner via the blow-out channels 21 of the first switching contact pieces 3a, 3b, 3c, as described for the first exemplary embodiment of a switching arrangement.
  • the Figure 6 shows a modification of the one from the Figure 5 known second embodiment variant of a switching arrangement.
  • the ones in the Figure 6 shown third embodiment variant The switching arrangement differs in the connection of the blow-out channels 21 of the first switching contact pieces 3a, 3c of the first and third switching contacts 2, 4.
  • the mouth openings of the blow-out channels 21 of the first switching contact pieces 3a, 3c and third switching contacts 2, 4, which are of the second switching contact pieces 4a , 4b, 4c are each connected via a piping 24 to the volume displacement region 18 of a cylinder 10a with a circular cross section.
  • openings are made on the jacket side in a cylinder wall of the cylinder 10a, into which the pipes 24 open.
  • the piping 24 takes over the function of the channels 23, as in the second embodiment of a switching arrangement Figure 5 known.
  • a function analogous to the description of the first embodiment variant is also provided.

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

Claims (9)

  1. Agencement de commutation comportant un dispositif d'insufflation et un ensemble (1) de contact ayant un premier contact (2, 3, 4) de commutation ayant une première et une deuxième pièces (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation, dans lequel entre les pièces (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation du premier contact (2, 3, 4) de commutation s'étend au moins de temps à autre un espace de coupure et ayant un deuxième contact (2, 3, 4) de commutation, ayant une première et une deuxième pièces (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation, dans lequel entre les pièces (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation du deuxième contact (2, 3, 4) s'étend au moins de temps à autre un espace de coupure et un volume d'insufflation du dispositif d'insufflation manœuvre tant le premier qu'également le deuxième contact (2, 3, 4) de commutation, dans lequel les plusieurs contacts (2, 3, 4) de commutation sont montés en étant isolés électriquement les uns par rapport aux autres de manière à avoir des potentiels/courants électriques différents les uns des autres dans les contacts (2, 3, 4) de commutation et le dispositif d'insufflation a un agencement (10, 10a, 13, 13a) piston-cylindre déplaçant un volume, dans lequel au moins une pièce (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation, en particulier des pièces (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation du premier et du deuxième contact (2, 3, 4) de commutation, est/sont montées sur l'agencement (10, 10a, 13, 13a) de piston-cylindre,
    caractérisé en ce que
    un cylindre (10, 10a) de l'agencement (10, 10a, 13, 13a) de piston-cylindre est une partie d'une chaine cinématique donnant un mouvement relatif des pièces (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation.
  2. Montage de commutation suivant la revendication 1,
    caractérisé en ce que
    Au moins une pièce (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation est mise sur une paroi de l'agencement (10, 10a, 13, 13a) de piston-cylindre, en particulier en étant insérée dans une paroi de l'agencement (10, 10a, 13, 13a) de piston-cylindre.
  3. Montage de commutation suivant la revendication 1 ou 2,
    caractérisé en ce que
    au moins une pièce (3a, 3b, 3c, 4a, 4b, 4c) de contact de commutation traverse une paroi de l'agencement (10, 10a, 13, 13a) de piston-cylindre.
  4. Montage de commutation suivant l'une des revendications 1 à 3,
    caractérisé en ce que
    un conduit (21) d'insufflation s'étend au moins en partie dans une pièce (3a, 3b, 3c) de contact de commutation.
  5. Montage de commutation suivant l'une des revendications 1 à 4,
    caractérisé en ce que
    au moins une partie d'une paroi de l'agencement (10, 10a, 13, 13a) de piston-cylindre a un effet d'isolation électrique.
  6. Montage de commutation suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    l'agencement (10, 10a, 13, 13a) de piston-cylindre a une section transversale sensiblement rectangulaire.
  7. Montage de commutation suivant l'une des revendications 1 à 6,
    caractérisé en ce que
    l'agencement (10, 10a, 13, 13a) de piston-cylindre s'appuie au moins en partie sur un dispositif (14, 15) d'amortissement.
  8. Montage de commutation suivant l'une des revendications 1 à 7,
    caractérisé en ce que
    les contacts (2, 3, 4) de commutation sont entourés d'un fluide isolant électriquement, qui est enfermé dans un boîtier (7) de blindage.
  9. Montage de commutation suivant la revendication 8,
    caractérisé en ce que
    une énergie d'entrainement d'une pièce (3, 3a, 3b, 4a, 4b, 4c) de contact de commutation est transmise à travers le boîtier (7) de blindage.
EP17191726.3A 2016-10-12 2017-09-19 Agencement de commutation Active EP3309810B1 (fr)

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DE102016219812.2A DE102016219812A1 (de) 2016-10-12 2016-10-12 Schaltanordnung

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Publication number Priority date Publication date Assignee Title
DE102019206807A1 (de) * 2019-05-10 2020-11-12 Siemens Aktiengesellschaft Mittelspannungs-Lasttrennschalter
DE102019212109A1 (de) * 2019-08-13 2021-02-18 Siemens Aktiengesellschaft Elektrische Schalteinrichtung
DE102020203029A1 (de) 2020-03-10 2021-09-16 Siemens Aktiengesellschaft Elektrische Schaltanordnung

Citations (2)

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Publication number Priority date Publication date Assignee Title
GB519113A (en) * 1938-07-15 1940-03-18 George Ethelbert Whitehead Improvements in electrical switches and circuit breakers of the gas blast type
DE1156473B (de) * 1959-07-01 1963-10-31 Westinghouse Electric Corp Elektrischer Leistungsschalter

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DE563461C (de) * 1932-11-05 Voigt & Haeffner Akt Ges Schalter mit Loeschung des Lichtbogens durch stroemende Pressluft
US2979591A (en) * 1958-09-19 1961-04-11 Westinghouse Electric Corp Circuit interrupters
DE1168996B (de) * 1961-03-27 1964-04-30 Westinghouse Electric Corp Druckgasschalter mit Filter
US3214553A (en) * 1964-07-09 1965-10-26 Westinghouse Electric Corp Gas-blast circuit interrupters with closed recirculating system having gas filtering means
DE1951201U (de) * 1966-07-30 1966-12-08 Siemens Ag Druckluftabtrieb fuer elektrische schaltgeraete.
CH618287A5 (en) * 1977-07-26 1980-07-15 Sprecher & Schuh Ag Gas-blast circuit breaker
DE102013205945A1 (de) 2013-04-04 2014-10-09 Siemens Aktiengesellschaft Trennschalteinrichtung
DE102014216171A1 (de) * 2014-08-14 2016-03-03 Siemens Aktiengesellschaft Elektrische Schalteinrichtung

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
GB519113A (en) * 1938-07-15 1940-03-18 George Ethelbert Whitehead Improvements in electrical switches and circuit breakers of the gas blast type
DE1156473B (de) * 1959-07-01 1963-10-31 Westinghouse Electric Corp Elektrischer Leistungsschalter

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DE102016219812A1 (de) 2018-04-12
EP3309810C0 (fr) 2023-11-01

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