WO2021240672A1 - 負荷時タップ切換器のタップ選択器の切換機構 - Google Patents

負荷時タップ切換器のタップ選択器の切換機構 Download PDF

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Publication number
WO2021240672A1
WO2021240672A1 PCT/JP2020/020841 JP2020020841W WO2021240672A1 WO 2021240672 A1 WO2021240672 A1 WO 2021240672A1 JP 2020020841 W JP2020020841 W JP 2020020841W WO 2021240672 A1 WO2021240672 A1 WO 2021240672A1
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WO
WIPO (PCT)
Prior art keywords
fixed
contact
movable
tap
switching mechanism
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.)
Ceased
Application number
PCT/JP2020/020841
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English (en)
French (fr)
Japanese (ja)
Inventor
真一郎 阿部
直紀 江口
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.)
Toshiba Corp
Toshiba Energy Systems and Solutions Corp
Original Assignee
Toshiba Corp
Toshiba Energy Systems and Solutions Corp
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 Toshiba Corp, Toshiba Energy Systems and Solutions Corp filed Critical Toshiba Corp
Priority to PCT/JP2020/020841 priority Critical patent/WO2021240672A1/ja
Priority to JP2022527343A priority patent/JP7279264B2/ja
Publication of WO2021240672A1 publication Critical patent/WO2021240672A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current

Definitions

  • An embodiment of the present invention relates to a switching mechanism of a tap selector of a tap changer under load.
  • the load tap changer is a device that switches taps during transformer operation (during load).
  • the load tap changer includes a tap selector and a switching switch.
  • the tap selector selects the tap to operate in the transformer tap winding.
  • the switching switch switches the circuit to the selected tap.
  • the tap selector has a movable contact that can be moved towards a fixed contact. When selecting the tap to operate, connect the movable contact to the fixed contact. When connecting a movable contact to a fixed contact, if the vertical height of the fixed contact does not match, adjust the vertical height of the fixed contact with a spacer or the like. Therefore, it is required to reduce the adjustment process of the tap selector.
  • An object to be solved by the present invention is to provide a tap changer switching mechanism of a load tap changer that can reduce the adjustment process of the tap selector.
  • the switching mechanism of the tap selector of the load tap changer of the embodiment has a fixed portion, a movable portion, an urging member, and a guide.
  • the fixed portion has a fixed contact.
  • the fixed portion has an annular shape.
  • the movable portion has a movable contact that can be connected to the fixed contact.
  • the movable portion can move in the circumferential direction of the fixed portion.
  • the urging member urges the movable portion toward the fixed portion.
  • the guide is provided on the fixed portion. The guide guides the movable portion between a connection position where the movable contact contacts the fixed contact and a non-connection position where the movable contact does not contact the fixed contact.
  • the perspective view of the tap changer under load of embodiment The perspective view of the tap selector of an embodiment. Another perspective view of the tap selector of the embodiment. The perspective view which shows a part of the tap selector of an embodiment. Explanatory drawing of arrangement of fixed contact and movable contact of embodiment.
  • the perspective view of the main fixing unit of an embodiment The perspective view which shows a part of the main fixing unit of an embodiment.
  • FIG. 1 is a perspective view of the load tap changer 1 of the embodiment.
  • the load tap changer 1 is a device that adjusts the voltage by changing the turns ratio (transformation ratio) of the transformer in the operating state.
  • the load tap changer 1 includes a tap selector 2, a drive mechanism 3, a deceleration mechanism 4, a switching switch 5, and an oil tank 6.
  • the tap selector 2 selects a tap to be operated in the transformer tap winding.
  • the drive mechanism 3 drives the tap selector 2 by a drive force transmitted from an electric operating device (not shown) via a drive shaft 7.
  • the deceleration mechanism 4 decelerates the rotation speed of the rotational operation transmitted from the electric operating device (not shown) to the drive shaft 7.
  • the switching switch 5 switches the circuit to the selected tap.
  • the switching switch 5 is arranged inside the oil tank 6 and is immersed in insulating oil.
  • the switching switch 5 includes a plurality of tap terminals (not shown). The plurality of tap terminals are connected to the tap selector 2 by wiring 8.
  • the tap selector 2 includes a plurality of switching devices 20 and 30 (switching mechanism) for switching contacts.
  • the plurality of switchers 20 and 30 include a main switcher 20 and a sub switcher 30 connected to the main switcher 20 via a geneva driver 16.
  • the plurality of columns 12 include a main column 13 that supports the main switch 20 and a sub-post 14 that supports the sub-switch 30.
  • the Geneva driver 16 is provided between the upper plate 10 and the sub switch 30.
  • the Geneva driver 16 is rotated by the rotational operation of the drive mechanism 3.
  • a geneva gear 17 that rotates in conjunction with the rotation of the geneva driver 16 is provided between the upper plate 10 and the main switch 20.
  • the generator gear 17 is arranged concentrically with the central axis C of the main switch 20 (the central axis C of the column body 19).
  • FIG. 3 is another perspective view of the tap selector of the embodiment.
  • the tap selector 2 includes a current collector ring 18 and a prism 19 that supports the current collector ring 18.
  • the current collector ring 18 is formed in an annular shape when viewed from above.
  • a plurality of current collector rings 18 (for example, six in the present embodiment) are provided at intervals in the vertical direction.
  • the prism 19 extends in the vertical direction.
  • the prism 19 is formed in a cylindrical shape. Six current collecting rings 18 are connected to the outer peripheral surface of the prism 19 at substantially the same interval in the vertical direction.
  • the main switch 20 includes a main fixed unit 21 (fixed portion) and a main movable unit 22 (movable portion) that can be moved with respect to the main fixed unit 21.
  • the number of main fixing units 21 is the same as that of the current collector rings 18 (for example, six in this embodiment).
  • the number of main fixed units 21 corresponding to the three phases of the U phase, the V phase, and the W phase (for example, in the present embodiment, two for each phase, for a total of six) is provided.
  • the plurality of main fixing units 21 are fixed to the main support columns 13 at substantially the same interval in the vertical direction.
  • the number of main movable units 22 is the same as that of the main fixed units 21 (for example, six in this embodiment).
  • the main movable unit 22 slides the surface of the current collector ring 18 and the surface of the main fixing unit 21 to open (disconnect) or close (connect) the contacts.
  • the sub-switching device 30 includes a sub-fixed unit 31 and a sub-movable unit 32 that can be moved with respect to the sub-fixed unit 31.
  • the number of sub-fixed units 31 corresponding to the three phases of the U phase, the V phase, and the W phase (for example, in the present embodiment, one for each phase, a total of three) is provided.
  • the plurality of sub-fixing units 31 are fixed to the sub-struts 14 at substantially the same interval in the vertical direction.
  • the number of sub-movable units 32 is the same as that of the sub-fixed units 31 (for example, three in this embodiment).
  • the main fixing unit 21 has an annular shape concentric with the central axis C of the main switch 20 (central axis C of the prism body 19).
  • axial direction the direction along the central axis C of the main switch 20
  • circumferential direction the direction orthogonal to the axial direction
  • the direction around the central axis C is referred to as "circumferential direction”.
  • the axial direction is a direction orthogonal to the horizontal direction (vertical direction).
  • the plurality of recesses 44 and 45 include a contact recess 44 in which the fixed contact 41 is provided and a non-contact recess 45 in which the fixed contact 41 is not provided.
  • the contact recess 44 is recessed so that the fixed contact 41 can be fitted and attached.
  • the length of the contact recess 44 is larger than the length of the non-contact recess 45.
  • the contact recesses 44 and the non-contact recesses 45 are alternately arranged in the circumferential direction of the fixing plate 40.
  • a plurality of contact recesses 44 and non-contact recesses 45 (for example, six in this embodiment) are arranged. With the plurality of fixed contacts 41 attached to the plurality of contact recesses 44, the plurality of fixed contacts 41 adjacent to each other in the circumferential direction have the same height (height in the axial direction).
  • the fixing plate 40 is provided with a through hole 46 (opening) that opens in the vertical direction (thickness direction of the fixing plate 40).
  • the through hole 46 is connected to the radial central portion of the contact recess 44 on the inner side in the radial direction.
  • the through hole 46 is open so that the inner insertion portion 51 (bending portion) can be hooked (see FIG. 7).
  • the contact recess 44 formed on the upper surface of the fixing plate 40 is formed on the "upper contact recess 44A”
  • the contact recess 44 formed on the lower surface of the fixing plate 40 is formed on the “lower contact recess 44B”
  • the upper surface of the fixing plate 40 is formed.
  • the non-contact recess 45 formed therein is referred to as an “upper non-contact recess 45A”
  • the non-contact recess 45 formed on the lower surface of the fixing plate 40 is referred to as a “lower non-contact recess 45B”.
  • the upper contact recess 44A overlaps the lower contact recess 44B as a whole when viewed from the axial direction (when viewed from the thickness direction of the fixing plate 40).
  • the upper non-contact recess 45A generally overlaps with the lower non-contact recess 45B when viewed from the axial direction.
  • the main column 13 is provided with an insertion hole 13a for inserting the protrusion 47 of the fixing plate 40.
  • the insertion hole 13a is open so that the protrusion 47 can be inserted.
  • a plurality of insertion holes 13a (for example, six in the present embodiment) are arranged at substantially the same interval in the vertical direction.
  • the main fixing unit 21 is attached to the main support column 13 by inserting the protrusion 47 of the fixing plate 40 into the insertion hole 13a of the main column 13.
  • the upper fixed contact 41A and the lower fixed contact 41B have the same shape as each other. That is, the fixing contacts 41A and 41B provided on both sides of the fixing plate 40 in the axial direction have the same shape as each other.
  • the lower fixed contact 41B has a shape in which the upper fixed contact 41A is inverted in the vertical direction. Since the lower fixed contact 41B has the same configuration as the upper fixed contact 41A, detailed description thereof will be omitted.
  • the fixed contact body 50 is arranged in the contact recess 44 of the fixed plate 40.
  • the fixed contact body 50 extends in the circumferential direction of the fixed plate 40 when viewed from the axial direction.
  • the upper surface of the fixed contact main body 50 of the upper fixed contact 41A is arranged on the same surface as the upper surface of the fixing plate 40 with the upper fixed contact 41A attached to the upper contact recess 44A.
  • the lower surface of the fixed contact main body 50 of the lower fixed contact 41B is arranged on the same surface as the lower surface of the fixed plate 40 with the lower fixed contact 41B attached to the lower contact recess 44B.
  • the inner insertion portion 51 bends from the circumferential center portion (a part of the fixed contact) on the radial inner side of the fixed contact main body 50 and extends inward in the axial direction.
  • the inner insertion portion 51 is inserted into the through hole 46 of the fixing plate 40.
  • the inner insertion portion 51 is hooked on the through hole 46 of the fixing plate 40 so as not to be movable in the circumferential direction and the radial direction.
  • the inner insertion portion 51 of the upper fixed contact 41A is inserted from above into the through hole 46 of the fixing plate 40.
  • the inner insertion portion 51 of the lower fixing contact 41B is inserted from below into the through hole 46 of the fixing plate 40.
  • the outer connecting portion 53 extends horizontally from the radial outer end of the outer inclined portion 52 toward the radial outer side.
  • the outer connecting portion 53 has an insertion hole 53a that opens in the axial direction so that the bolt 54 can be inserted (see FIG. 5).
  • the insertion hole 53 is coaxially opened at the outer connection portions 53 of the upper fixed contact 41A and the lower fixed contact 41B.
  • the fixed contact 41 is attached to the fixed plate 40 by the following procedure.
  • the fixed contact main bodies 50 of the upper fixed contact 41A and the lower fixed contact 41B are respectively fitted and arranged in the upper contact recess 44A and the lower contact recess 44B, respectively.
  • the inner insertion portions 51 of the upper fixed contact 41A and the lower fixed contact 41B are inserted into the through holes 46 of the fixing plate 40.
  • a bolt 54 is inserted into the insertion hole 53a of each outer connection portion 53 of the upper fixed contact 41A and the lower fixed contact 41B into the nut 55. Screw in.
  • connection position means a position where the outer contact 62 of the main movable unit 22 is in contact with the fixed contact main body 50.
  • connection position is the position on the contact recess 44 (on the fixed contact body 50) of the fixed plate 40.
  • the non-connection position means a position where the outer contact 62 of the main movable unit 22 does not contact the fixed contact body 50.
  • the non-connection position is a position on the non-contact recess 45 of the fixing plate 40.
  • the guide 42 extends in the circumferential direction so that the outer contact 62 of the main movable unit 22 can be connected to any of the plurality of fixed contacts 41.
  • the guide 42 provided on the upper surface of the fixing plate 40 is referred to as an “upper guide 42A”
  • the guide 42 provided on the lower surface of the fixing plate 40 is referred to as a “lower guide 42B” (see FIG. 5).
  • the upper guide 42A and the lower guide 42B have the same shape as each other.
  • the lower guide 42B has a shape in which the upper guide 42A is inverted in the vertical direction. Since the lower guide 42B has the same configuration as the upper guide 42A, detailed description thereof will be omitted.
  • the upper guide 42A includes a connection holding surface 57, a non-connection holding surface 58, and an inclined surface 59.
  • the connection holding surface 57 is a surface that holds the outer contact 62 of the main movable unit 22 at the connection position.
  • the connection holding surface 57 is formed in the vicinity of the bottom surface of the groove recessed inward in the axial direction from the outer surface in the axial direction of the fixing plate 40 (see FIG. 5).
  • the connection holding surface 57 is arranged radially inside the contact recess 44 of the fixing plate 40.
  • the connection holding surface 57 extends in the horizontal direction. In the circumferential direction of the fixing plate 40, the length of the connection holding surface 57 is smaller than the length of the contact recess 44.
  • the non-connection holding surface 58 is a surface that separates from the connection holding surface 57 in the axial direction of the fixed plate 40 and holds the outer contact 62 of the main movable unit 22 in the non-connection position.
  • the non-connection holding surface 58 is formed on the upper surface of the overhanging portion that projects outward in the axial direction from the outer surface in the axial direction of the fixing plate 40.
  • the non-connection holding surface 58 is arranged radially inside the non-contact recess 45 of the fixing plate 40.
  • the non-connection holding surface 58 is separated from the connection holding surface 57 in the circumferential direction of the fixing plate 40.
  • the non-connection holding surface 58 extends horizontally above the connection holding surface 57. In the circumferential direction of the fixing plate 40, the length of the non-connection holding surface 58 is larger than the length of the non-contact recess 45.
  • the inclined surface 59 is connected to the connection holding surface 57 and the non-connection holding surface 58.
  • the inclined surface 59 extends in a direction inclined with respect to the horizontal direction. Specifically, the inclined surface 59 is linearly inclined so as to be separated in the axial direction of the fixed plate 40 from the outer end of the connection holding surface 57 toward the outer end of the non-connection holding surface 58 in the circumferential direction of the fixed plate 40. doing.
  • the main movable unit 22 can move in the circumferential direction of the main fixed unit 21 (direction of arrow V1 in FIG. 4).
  • a pair of main movable units 22 are provided so as to sandwich the main fixed unit 21 from both sides in the axial direction.
  • a pair of main movable units 22 is provided for each main fixed unit 21.
  • the main movable unit 22 located above the main fixed unit 21 will be referred to as an “upper main movable unit 22A”
  • the main movable unit 22 located below the main fixed unit 21 will be referred to as a “lower main movable unit 22B”.
  • the upper main movable unit 22A and the lower main movable unit 22B have the same shape as each other.
  • the lower main movable unit 22B is an inverted upper main movable unit 22A in the vertical direction. Since the lower main movable unit 22B has the same configuration as the upper main movable unit 22A, detailed description thereof will be omitted.
  • the upper main movable unit 22A includes a movable plate 60, an inner contact 61, an outer contact 62 (movable contact), a roller 63, a shaft 64, and a sliding member 65.
  • the movable plate 60, the inner contact 61, and the outer contact 62 are integrally formed of the same member (for example, a metal such as copper).
  • the movable plate 60 extends in the radial direction so as to straddle the current collector ring 18 and the fixed plate 40 (see FIG. 4).
  • the movable plate 60 is formed in a crank shape from the inner contact 61 toward the outer contact 62.
  • the movable plate 60 includes an inner connecting portion 70, an outer connecting portion 71, and an inclined connecting portion 72.
  • a part of the inner connecting portion 70 overlaps with the current collecting ring 18 when viewed from the axial direction.
  • the inner connecting portion 70 extends in the horizontal direction.
  • the outer connecting portion 71 is arranged radially outside the inner connecting portion 70. A part of the outer connecting portion 71 overlaps with the fixing plate 40 when viewed from the axial direction.
  • the outer connecting portion 71 extends horizontally outside the inner connecting portion 70 in the axial direction.
  • the inclined connecting portion 72 connects the inner connecting portion 70 and the outer connecting portion 71.
  • the inclined connecting portion 72 extends in a direction inclined with respect to the horizontal direction. Specifically, the inclined connecting portion 72 is inclined so as to be separated in the axial direction of the movable plate 60 from the outer end of the inner connecting portion 70 toward the inner end of the outer connecting portion 71 in the radial direction of the movable plate 60. ..
  • the inner contact 61 is provided on the radial inner portion of the movable plate 60.
  • the inner contact 61 is provided on the inner surface of the inner connecting portion 70 in the axial direction.
  • the inner contact 61 projects in a curved shape from the inner connecting portion 70 toward the inside in the axial direction.
  • the inner contact 61 is in contact with the axial outer surface of the current collector ring 18.
  • the outer contact 62 is arranged radially outside the movable plate 60 with respect to the inner contact 61.
  • the outer contact 62 is provided on the radial outer side of the movable plate 60.
  • the outer contact 62 is provided on the inner surface of the outer connecting portion 71 in the axial direction.
  • the outer contact 62 projects in a curved shape from the outer connecting portion 71 toward the inside in the axial direction.
  • the outer contact 62 can be connected to the fixed contact 41. In FIG. 5, the outer contact 62 is in contact with the axial outer surface of the fixed contact body 50.
  • the movable plate 60 has a bolt hole 74 and a roller hole 75.
  • the bolt hole 74 and the roller hole 75 open the outer connecting portion 71 of the movable plate 60 in the axial direction.
  • the bolt hole 74 is arranged in the radial inner portion of the outer connecting portion 71.
  • the bolt hole 74 is arranged between the current collector ring 18 and the fixing plate 40 when viewed from the axial direction (see FIG. 5).
  • the bolt hole 74 is formed in a circular shape when viewed from the axial direction.
  • the roller hole 75 is arranged between the bolt hole 74 of the outer connecting portion 71 and the outer contact 62.
  • the roller hole 75 overlaps with the guide 42 when viewed from the axial direction (see FIG. 5).
  • the roller hole 75 is formed in a rectangular shape when viewed from the axial direction.
  • the movable plate 60 has a groove 76 that is recessed so that the shaft 64 can be attached.
  • the groove 76 is recessed from the axial inner surface of the outer connecting portion 71 of the movable plate 60 toward the axial outer side.
  • the groove 76 extends radially.
  • the groove 76 is connected to the roller hole 75.
  • a pair of grooves 76 are provided on both sides of the roller holes 75 in the radial direction.
  • the movable plate 60 is provided with a pair of reinforcing portions 77 for reinforcing the formed portion of the groove 76 in the outer connecting portion 71 (see FIG. 5).
  • the movable plate 60 has a recess 78 that is recessed so that the sliding member 65 can be attached.
  • the recess 78 is recessed from the outer side in the circumferential direction of the movable plate 60 toward the inner side in the circumferential direction.
  • the recesses 78 are provided on both sides of the movable plate 60 in the circumferential direction.
  • the recess 78 is continuously provided over the portion of the inner connecting portion 70 near the inclined connecting portion 72, the inclined connecting portion 72, and the portion of the outer connecting portion 71 near the inclined connecting portion 72.
  • the roller 63 is provided on the upper main movable unit 22A.
  • the roller 63 faces the guide 42 in the axial direction (see FIG. 5).
  • the roller 63 is rotatable around a shaft 64 (a shaft along the radial direction of the fixing plate 40).
  • the roller 63 is attached to the shaft 64 via a bearing 67.
  • the shaft 64 rotatably supports the roller 63 around the shaft 64.
  • the length of the shaft 64 is larger than the length of the roller 63.
  • the portion of the shaft 64 that protrudes from the roller 63 is fitted into the roller hole 75 of the outer connecting portion 71.
  • the shaft 64 may be attached to the roller hole 75 of the outer connecting portion 71 by hitting and crushing the periphery of the roller hole 75 with a hammer or the like while the shaft 64 is fitted in the roller hole 75.
  • the sliding member 65 is provided between the main movable unit 22 and the holding member 90 (see FIG. 4).
  • the sliding member 65 is attached to the recess 78 of the movable plate 60 of the main movable unit 22.
  • the sliding member 65 has a shape along the recess 78 of the movable plate 60.
  • the sliding member 65 extends over the portion of the inner connecting portion 70 near the inclined connecting portion 72, the inclined connecting portion 72, and the portion of the outer connecting portion 71 near the inclined connecting portion 72 in the recess 78.
  • the sliding member 65 has a U-shaped cross section that sandwiches the movable plate 60 from both sides in the axial direction.
  • the sliding member 65 is fixed to the recess 78 of the movable plate 60 by press fitting.
  • the sliding member 65 is made of a material having a coefficient of friction smaller than that of the movable plate 60 of the main movable unit 22.
  • the sliding member 65 may be made of a resin such as fiber-reinforced plastics (FRP).
  • the main switch 20 includes an urging member 80 that urges the main movable unit 22 toward the main fixed unit 21.
  • the urging member 80 is a compression coil spring.
  • the urging member 80 is provided on the upper main movable unit 22A.
  • the urging member 80 is not provided on the lower main movable unit 22B.
  • the urging member 80 is arranged on the bolt hole 74 of the movable plate 60 of the upper main movable unit 22A (see FIG. 5).
  • the inner diameter of the coil of the urging member 80 is larger than the diameter of the bolt hole 74 of the movable plate 60.
  • the urging member 80 constantly urges each of the upper main movable unit 22A and the lower main movable unit 22B toward the inside in the axial direction.
  • the urging member 80 is attached to the main movable unit 22 by bolts 81.
  • the urging member 80 arranged on the bolt hole 74 of the movable plate 60 of the upper main movable unit 22A, the movable plates of the upper main movable unit 22A and the lower main movable unit 22B are arranged from above the urging member 80.
  • a bolt 81 is inserted into each bolt hole 74 of 60 and screwed into a nut 82.
  • the main switch 20 includes a holding member 90 that movably holds the main movable unit 22 in the axial direction (arrow V2 direction in FIG. 4) of the main fixed unit 21.
  • the holding member 90 extends in the vertical direction.
  • the upper end of the holding member 90 is fixed to the lower surface of the Geneva gear 17 (see FIG. 2).
  • the holding member 90 rotates integrally with the generator gear 17.
  • the main movable unit 22 rotates integrally with the generator gear 17 via the holding member 90.
  • a pair of holding members 90 are provided with the main movable unit 22 interposed therebetween.
  • the pair of holding members 90 are arranged on both sides of the main movable unit 22 in the circumferential direction.
  • the holding member 90 is arranged in the vicinity of the inclined connecting portion 72 (see FIG. 8) of the movable plate 60 of the main movable unit 22.
  • Each of the upper main movable unit 22A and the lower main movable unit 22B is movable in the axial direction by being held by the pair of holding members 90.
  • the switching mechanism 20 of the tap selector 2 of the load tap changer 1 of the present embodiment includes a fixed unit 21, a movable unit 22, an urging member 80, and a guide 42.
  • the fixed unit 21 has a fixed contact 41.
  • the fixed unit 21 has an annular shape.
  • the movable unit 22 has a movable contact 62 that can be connected to the fixed contact 41.
  • the movable unit 22 is movable in the circumferential direction of the fixed unit 21.
  • the urging member 80 urges the movable unit 22 toward the fixed unit 21.
  • the guide 42 is provided in the fixed unit 21.
  • the guide 42 guides the movable unit 22 between a connection position where the movable contact 62 is in contact with the fixed contact 41 and a non-connection position where the movable contact 62 is not in contact with the fixed contact 41. According to this configuration, the movable contact 62 is guided between the connected position and the non-connected position, so that the contact can be opened or closed. Therefore, when connecting the movable contact 62 to the fixed contact 41, it is not necessary to adjust the vertical height of the fixed contact 41 with a spacer or the like. Therefore, the adjustment process of the tap selector 2 can be reduced.
  • the fixed contacts 41 are provided on both sides of the fixed unit 21 in the axial direction.
  • the fixed contacts 41 are provided on both sides of the fixed unit 21 in the axial direction.
  • a plurality of fixed contacts 41 are provided at intervals in the circumferential direction.
  • the guide 42 extends in the circumferential direction so that the movable contact 62 can be connected to any of the plurality of fixed contacts 41. According to this configuration, when the movable contact 62 is connected to any of the plurality of fixed contacts 41, it is not necessary to adjust the vertical height of the fixed contacts 41 with a spacer or the like. Therefore, the adjustment process of the tap selector 2 can be reduced.
  • the guide 42 includes a connection holding surface 57, a non-connection holding surface 58, and an inclined surface 59.
  • the connection holding surface 57 is a surface that holds the movable contact 62 at the connection position.
  • the non-connection holding surface 58 is a surface that separates from the connection holding surface 57 in the axial direction of the fixed unit 21 and holds the movable contact 62 at the non-connection position.
  • the inclined surface 59 is connected to the connection holding surface 57 and the non-connection holding surface 58.
  • the inclined surface 59 is a surface that is inclined so as to be separated from the fixed unit 21 in the axial direction from the connection holding surface 57 toward the non-connection holding surface 58 in the circumferential direction.
  • the guide 42 can open or close the contact while changing the height of the movable contact 62 in the axial direction. Therefore, the contact can be smoothly opened or closed by moving the movable unit 22 in the circumferential direction. Therefore, it is not necessary to smoothly process the surface of the fixed contact 41 by machining. Therefore, the material cost of the tap selector 2 can be reduced.
  • the switching mechanism 20 includes a holding member 90 that holds the movable unit 22 so as to be movable in the axial direction of the fixed unit 21. According to this configuration, when the movable contact 62 is connected to the fixed contact 41, it is not necessary to adjust the vertical height of the fixed contact 41 with a spacer or the like. Therefore, the adjustment process of the tap selector 2 can be reduced.
  • a pair of holding members 90 are provided with the movable unit 22 interposed therebetween. According to this configuration, the movable unit 22 can be moved more stably in the axial direction as compared with the case where only one holding member 90 is provided on the side of the movable unit 22.
  • the switching mechanism 20 is provided between the movable unit 22 and the holding member 90, and includes a sliding member 65 made of a material having a friction coefficient smaller than that of the movable unit 22. According to this configuration, the slidability between the movable unit 22 and the holding member 90 is improved. Therefore, the movable unit 22 can be moved more smoothly in the axial direction.
  • the switching mechanism 20 is provided in the movable unit 22 and includes a roller 63 that faces the guide 42 in the axial direction of the fixed unit 21 and can rotate around an axis along the radial direction of the fixed unit 21. According to this configuration, the slidability between the movable unit 22 and the guide 42 is improved. Therefore, the movable unit 22 can be moved more smoothly in the circumferential direction.
  • the switching mechanism 20 includes a shaft 64 that rotatably supports the roller 63 around a shaft.
  • the movable unit 22 has a groove 76 that is recessed so that the shaft 64 can be attached. According to this configuration, since the shaft 64 is attached to the groove 76 of the movable unit 22, it is not necessary to separately provide a member for attaching the shaft 64. Therefore, the configuration can be simplified and the cost can be reduced.
  • the fixed contacts 41 are provided on both sides of the fixed unit 21 in the axial direction.
  • the installation position of the fixed contact 41 is not limited to this.
  • the fixed contact 41 may be provided on only one side in the axial direction of the fixed unit 21.
  • a pair of movable contacts 62 are provided so as to sandwich the fixing unit 21 from both sides in the axial direction.
  • the installation position of the movable contact 62 is not limited to this.
  • the movable contact 62 may be provided only on one side in the axial direction of the fixed unit 21.
  • a plurality of fixed contacts 41 are provided at intervals in the circumferential direction.
  • the number of fixed contacts 41 installed is not limited to this.
  • only one fixed contact 41 may be provided in the circumferential direction of the fixed unit 21.
  • the number of fixed contacts 41 installed can be changed according to the required specifications.
  • the guide 42 is formed in an annular shape concentric with the fixing plate 40 when viewed from the axial direction.
  • the shape of the guide 42 is not limited to this.
  • the guide 42 may be formed in an arc shape (only a part of the inner circumference of the fixing plate 40) when viewed from the axial direction.
  • the shape of the guide 42 can be changed according to the required specifications.
  • the guide 42 includes a connection holding surface 57, a non-connection holding surface 58, and an inclined surface 59.
  • the configuration of the guide 42 is not limited to this.
  • the guide 42 may not have an inclined surface 59. That is, the connection holding surface 57 of the guide 42 may be adjacent to the non-connection holding surface 58.
  • the inclined surface 59 is linearly inclined so as to be separated from the fixed unit 21 in the axial direction from the connection holding surface 57 toward the non-connection holding surface 58 in the circumferential direction.
  • the shape of the inclined surface 59 is not limited to this.
  • the inclined surface 59 may be inclined while being curved so as to be separated from the fixed unit 21 in the axial direction from the connection holding surface 57 toward the non-connection holding surface 58 in the circumferential direction.
  • a pair of holding members 90 are provided with the movable unit 22 interposed therebetween.
  • the number of holding members 90 installed is not limited to this.
  • only one holding member 90 may be provided on the side of the movable unit 22.
  • the number of holding members 90 installed can be changed according to the required specifications.
  • the switching mechanism 20 includes a sliding member 65 between the movable unit 22 and the holding member 90.
  • the configuration of the switching mechanism 20 is not limited to this.
  • the switching mechanism 20 may not include the sliding member 65. That is, the movable unit 22 may be in direct contact with the holding member 90.
  • the switching mechanism 20 includes a roller 63 provided on the movable unit 22.
  • the configuration of the switching mechanism 20 is not limited to this.
  • the switching mechanism 20 does not have to include the roller 63. That is, the movable unit 22 may be in direct contact with the guide 42.
  • the movable unit 22 has a groove 76 that is recessed so that the shaft 64 can be attached.
  • the configuration of the movable unit 22 is not limited to this.
  • the movable unit 122 may include a fastening member 190 to which the shaft 64 is connected.
  • the movable unit 122 may have a female screw 191 that is recessed so that the fastening member 190 can be attached.
  • the shaft end of the shaft 64 may be connected to the bolt head 190a of the fastening member 190.
  • the shaft 64 is attached to the female screw 191 of the movable unit 122 via the fastening member 190, it is not necessary to hit the circumference of the roller hole 75 with a hammer or the like to crush it. Therefore, the man-hours for mounting the shaft 64 can be reduced.
  • the guide 42 guides the movable unit 22 between the connection position where the movable contact 62 is in contact with the fixed contact 41 and the non-connection position where the movable contact 62 is not in contact with the fixed contact 41. do.
  • the movable contact 62 is guided between the connected position and the non-connected position, so that the contact can be opened or closed. Therefore, when connecting the movable contact 62 to the fixed contact 41, it is not necessary to adjust the vertical height of the fixed contact 41 with a spacer or the like. Therefore, the adjustment process of the tap selector 2 can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
PCT/JP2020/020841 2020-05-27 2020-05-27 負荷時タップ切換器のタップ選択器の切換機構 Ceased WO2021240672A1 (ja)

Priority Applications (2)

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PCT/JP2020/020841 WO2021240672A1 (ja) 2020-05-27 2020-05-27 負荷時タップ切換器のタップ選択器の切換機構
JP2022527343A JP7279264B2 (ja) 2020-05-27 2020-05-27 負荷時タップ切換器のタップ選択器の切換機構

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023162285A1 (ja) * 2022-02-22 2023-08-31 株式会社東芝 タップ選択器のタップ切換機構
JP2024077790A (ja) * 2022-11-29 2024-06-10 株式会社東芝 タップ選択器の可動接点駆動機構

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263620A (ja) * 1986-05-12 1987-11-16 Toshiba Corp 負荷時タツプ切換器
JPH07192939A (ja) * 1993-12-27 1995-07-28 Takaoka Electric Mfg Co Ltd 負荷時タップ切換器
JP2007115919A (ja) * 2005-10-20 2007-05-10 Tajima Seisakusho:Kk タップ選択器
JP2013506276A (ja) * 2009-09-26 2013-02-21 マシイネンフアブリーク・ラインハウゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 真空スイッチを有する負荷時タップ切換器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263620A (ja) * 1986-05-12 1987-11-16 Toshiba Corp 負荷時タツプ切換器
JPH07192939A (ja) * 1993-12-27 1995-07-28 Takaoka Electric Mfg Co Ltd 負荷時タップ切換器
JP2007115919A (ja) * 2005-10-20 2007-05-10 Tajima Seisakusho:Kk タップ選択器
JP2013506276A (ja) * 2009-09-26 2013-02-21 マシイネンフアブリーク・ラインハウゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 真空スイッチを有する負荷時タップ切換器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023162285A1 (ja) * 2022-02-22 2023-08-31 株式会社東芝 タップ選択器のタップ切換機構
JP2023122169A (ja) * 2022-02-22 2023-09-01 株式会社東芝 タップ選択器のタップ切換機構
JP7721460B2 (ja) 2022-02-22 2025-08-13 株式会社東芝 タップ選択器のタップ切換機構
JP2024077790A (ja) * 2022-11-29 2024-06-10 株式会社東芝 タップ選択器の可動接点駆動機構
JP7785656B2 (ja) 2022-11-29 2025-12-15 株式会社東芝 タップ選択器の可動接点駆動機構

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