WO2021106065A1 - Changeur de prises en charge - Google Patents

Changeur de prises en charge Download PDF

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Publication number
WO2021106065A1
WO2021106065A1 PCT/JP2019/046122 JP2019046122W WO2021106065A1 WO 2021106065 A1 WO2021106065 A1 WO 2021106065A1 JP 2019046122 W JP2019046122 W JP 2019046122W WO 2021106065 A1 WO2021106065 A1 WO 2021106065A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil tank
shaft
tap
gear
tank
Prior art date
Application number
PCT/JP2019/046122
Other languages
English (en)
Japanese (ja)
Inventor
真一郎 阿部
江口　直紀
Original Assignee
株式会社東芝
東芝エネルギーシステムズ株式会社
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 株式会社東芝, 東芝エネルギーシステムズ株式会社 filed Critical 株式会社東芝
Priority to JP2021560794A priority Critical patent/JP7095185B2/ja
Priority to PCT/JP2019/046122 priority patent/WO2021106065A1/fr
Publication of WO2021106065A1 publication Critical patent/WO2021106065A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • 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
    • 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 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 switching switch is housed in an oil tank together with insulating oil.
  • the oil tank is provided with an oil tank lid that closes an opening that serves as an outlet for a switching switch.
  • the problem to be solved by the present invention is to provide a tap changer at load that can reduce the maintenance man-hours of the switching switch.
  • FIG. 4 is a cross-sectional view taken along the line VV of FIG.
  • FIG. 1 is a schematic view of a transformer of the embodiment.
  • the transformer 1 includes a transformer main body (not shown), a tank 2 for accommodating the transformer main body together with insulating oil, and a load tap switching device 3 fixed to the tank 2.
  • the transformer body has an iron core and windings mounted on the iron core.
  • the tank 2 includes a top plate 5 extending in the horizontal direction.
  • the top plate 5 is formed with an opening 5a into which the tap changer 3 under load is inserted from above.
  • the load tap changer 3 closes the opening 5a of the top plate 5 with a part of the tap changer 3 arranged in the tank 2.
  • an electric operation mechanism (not shown) as a drive source for applying power to the load tap changer 3 is arranged.
  • the electric operating mechanism includes a motor.
  • the electric operation mechanism rotates a relay shaft (not shown) connected to the load tap changer 3 to transmit power to the load tap changer 3.
  • FIG. 2 is a perspective view showing a part of the load tap changer of the embodiment.
  • the load tap changer 3 includes a tap selector 10 that selects a tap of the winding of the transformer body, and a switching switch 11 that instantly switches the circuit to the selected tap.
  • An oil tank 12 for accommodating the switching switch 11 together with the insulating oil in the tank 2 is provided.
  • the tap selector 10 is arranged in the tank 2.
  • the switching switch 11 is arranged on the top plate 5 side with respect to the tap selector 10.
  • the oil tank 12 blocks communication between the inside of the tank 2 and the inside of the oil tank 12.
  • the oil tank 12 completely isolates the switching switch 11 from the transformer main body.
  • the oil tank 12 supports the tap selector 10 from above.
  • FIG. 3 is a cross-sectional view showing a part of the load tap changer of the embodiment.
  • the oil tank 12 includes an oil tank main body 20, an oil tank lid 25, and a flange 27.
  • the oil tank body 20 includes a bottom wall portion 21 located at the lower end portion and a peripheral wall portion 22 extending upward from the outer peripheral portion of the bottom wall portion 21.
  • the bottom wall portion 21 is arranged in the tank 2.
  • the bottom wall portion 21 is arranged between the tap selector 10 and the switching switch 11.
  • the bottom wall portion 21 is formed in a circular shape when viewed from above.
  • a transmission shaft 16 penetrates the bottom wall portion 21.
  • the transmission shaft 16 extends in the vertical direction.
  • the transmission shaft 16 is rotatably supported by the bottom wall portion 21.
  • the transmission shaft 16 transmits the power for operating the switching switch 11 from the outside of the oil tank 12 into the oil tank 12 (details will be described later).
  • the peripheral wall portion 22 is formed in a substantially cylindrical shape as a whole.
  • the peripheral wall portion 22 surrounds the switching switch 11 from the outside in the horizontal direction.
  • An oil tank opening 23 through which the switching switch 11 can pass in the vertical direction is formed at the upper end of the oil tank main body 20.
  • the oil tank lid 25 closes the oil tank opening 23.
  • the oil tank lid 25 is formed in a circular shape concentric with the oil tank main body 20 when viewed from above.
  • the oil tank lid 25 is fastened to the upper end of the oil tank main body 20 from above.
  • the outer peripheral portion of the oil tank lid 25 is in close contact with the upper end portion of the peripheral wall portion 22 of the oil tank main body 20 over the entire circumference.
  • the flange 27 projects from the upper part of the oil tank body 20 and extends around the entire circumference of the oil tank body 20.
  • the flange 27 extends in the horizontal direction.
  • the flange 27 is joined to the top plate 5 of the tank 2.
  • the flange 27 is fastened to the top plate 5 from above.
  • the flange 27 overlaps the entire inner peripheral edge of the opening 5a of the top plate 5 when viewed from above.
  • the flange 27 is in close contact with the periphery of the opening 5a over the entire circumference in a state where the oil tank body 20 is inserted into the opening 5a of the top plate 5 from above.
  • the flange 27 closes between the opening 5a of the top plate 5 and the oil tank body 20.
  • the outer peripheral edge of the flange 27 is formed so as to surround the entire tap selector 10 when viewed from above.
  • the flange 27 includes a widening portion 28.
  • the widening portion 28 projects more from the oil tank body 20 than the portion of the flange 27 other than the widening portion 28.
  • the widening portion 28 is formed with a through hole 29 into which a gear mechanism 13 (relay portion), which will be described later, is inserted.
  • the through hole 29 penetrates the flange 27 in the vertical direction.
  • the entire through hole 29 is formed inside the opening 5a of the top plate 5 of the tank 2 when viewed from above.
  • the oil tank 12 is mainly formed by combining the oil tank main portion 31, the oil tank head 32, and the head lid 33 as parts.
  • the oil tank main portion 31 includes a portion extending from the vertical intermediate portion to the lower end portion of the oil tank main body 20. The entire oil tank main portion 31 is arranged in the tank 2.
  • the oil tank main portion 31 is formed in a cylindrical shape that opens upward.
  • the oil tank head 32 includes an upper portion of the oil tank body 20 and a flange 27.
  • the oil tank head 32 is formed in a cylindrical shape as a whole.
  • the lower end of the oil tank head 32 is densely inserted inside the upper end of the oil tank main portion 31.
  • a flange 27 is arranged at an intermediate portion in the vertical direction of the oil tank head 32.
  • the head lid 33 is an oil tank lid 25. The head lid 33 closes the opening at the upper end of the oil tank head 32 from above.
  • the load tap changer 3 includes a gear mechanism 13.
  • the gear mechanism 13 is arranged in the widening portion 28 of the flange 27.
  • the gear mechanism 13 is arranged between the oil tank main body 20 and the inner peripheral edge of the opening 5a of the tank 2 when viewed from above.
  • a relay shaft that is rotated by the power of the electric operation mechanism is connected to the gear mechanism 13 outside the tank 2.
  • the gear mechanism 13 introduces the power of the electric operation mechanism from the outside of the tank 2 into the tank 2.
  • FIG. 4 is a perspective view showing the gear mechanism of the embodiment.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG.
  • the gear mechanism 13 includes a reduction mechanism 40 (driving unit), a shaft 45, a tap instruction mechanism 50, and a casing 60.
  • the power of the electric operation mechanism is input to the speed reduction mechanism 40.
  • the speed mechanism 40 transmits the power of the electric operation mechanism to the shaft 45.
  • the shaft 45 is connected to a drive shaft 14 described later in the tank 2.
  • the tap instruction mechanism 50 displays a number corresponding to the position of the tap selected by the tap selector 10.
  • the tap instruction mechanism 50 is connected to the shaft 45 and operates based on the rotation of the shaft 45.
  • the casing 60 holds the shaft 45 and houses the deceleration mechanism 40 and the tap instruction mechanism 50.
  • the casing 60 includes a holding portion 61 that rotatably holds the shaft 45, a first accommodating portion 67 that accommodates the deceleration mechanism 40, and a second accommodating portion that accommodates the tap instruction mechanism 50. 71 and.
  • the holding portion 61 is formed in a cylindrical shape extending in the vertical direction.
  • the holding portion 61 is inserted into the through hole 29 (see FIG. 3) of the flange 27.
  • the holding portion 61 and the through hole 29 are tightly closed.
  • the lower end of the holding portion 61 faces the inside of the tank 2.
  • a shaft 45 is inserted inside the holding portion 61.
  • a lower bearing 62A and an upper bearing 62B are mounted inside the holding portion 61.
  • the lower bearing 62A and the upper bearing 62B rotatably support the shaft 45 with respect to the holding portion 61.
  • the lower bearing 62A is arranged in a counterbore 63 formed on the lower end surface of the holding portion 61.
  • the upper bearing 62B is arranged in a counterbore 64 formed on the upper end surface of the holding portion 61.
  • the holding portion 61 holds the oil seal 65.
  • the oil seal 65 seals between the inner peripheral surface of the holding portion 61 and the outer peripheral surface of the shaft 45.
  • the oil seal 65 blocks communication between the upper end opening and the lower end opening of the holding portion 61.
  • the oil seal 65 prevents the insulating oil in the tank 2 from passing through the inside of the holding portion 61.
  • a pair of oil seals 65 are arranged one above the other.
  • the oil seal 65 is arranged between the lower bearing 62A and the upper bearing 62B.
  • the first accommodating portion 67 is arranged outside the tank 2.
  • the first accommodating portion 67 includes a wheel accommodating portion 68 accommodating the worm wheel 42 of the deceleration mechanism 40, and a worm accommodating portion 69 accommodating the worm 41 of the deceleration mechanism 40.
  • the wheel accommodating portion 68 is arranged above the holding portion 61.
  • the wheel accommodating portion 68 is connected to the holding portion 61.
  • the wheel accommodating portion 68 is formed in a bottomed tubular shape and is arranged coaxially with the holding portion 61.
  • the upper end of the holding portion 61 is open on the inner bottom surface of the wheel accommodating portion 68.
  • the worm accommodating portion 69 is horizontally adjacent to the wheel accommodating portion 68.
  • the worm accommodating portion 69 is formed in a horizontal tubular shape extending in one direction (see FIG. 4).
  • the internal space of the worm accommodating portion 69 is open to the internal space of the wheel accommodating portion 68.
  • the oil seal 65 regulates the entry of insulating oil into the tank 2 into the first accommodating portion 67.
  • the second accommodating portion 71 is arranged outside the tank 2.
  • the second accommodating portion 71 is arranged above the first accommodating portion 67.
  • the second accommodating portion 71 includes a main body 72 that opens upward, and a lid 73 that closes the upper opening of the main body 72.
  • the main body 72 is connected to the wheel accommodating portion 68.
  • the main body 72 is formed in a bottomed tubular shape and is arranged coaxially with the wheel accommodating portion 68.
  • the inner diameter of the main body 72 is larger than the inner diameter of the wheel accommodating portion 68.
  • the upper end of the wheel accommodating portion 68 is open on the inner bottom surface of the main body 72.
  • the lid 73 is formed of a metal material in a disk shape (see FIG. 4).
  • the lid 73 is formed so as to be removable from the main body 72.
  • the lid 73 is fastened to the main body 72 from above.
  • the shaft 45 extends in the vertical direction.
  • the shaft 45 is inserted through the holding portion 61 of the casing 60.
  • the shaft 45 projects from the holding portion 61 into the tank 2.
  • the shaft 45 projects upward from the holding portion 61.
  • a recess 46 into which the lower end of the first gear shaft 52A, which will be described later, is inserted is formed on the upper end surface of the shaft 45.
  • An engaging convex portion 47 that engages with the drive shaft 14 is formed at the lower end portion of the shaft 45.
  • the engaging protrusion 47 projects downward and extends so as to be orthogonal to the central axis of the shaft 45.
  • the deceleration mechanism 40 decelerates the rotation of the relay shaft and transmits it to the shaft 45.
  • the speed reduction mechanism 40 changes the direction of the rotation axis and transmits the rotation of the relay shaft to the shaft 45.
  • the speed reduction mechanism 40 includes a worm 41 to which a relay shaft is connected and a worm wheel 42 that meshes with the worm 41.
  • the worm 41 is housed in the worm housing section 69 of the first housing section 67 with one end protruding outside the casing 60 (see also FIG. 4).
  • the worm 41 extends in the horizontal direction.
  • the worm 41 is rotatably held by the worm accommodating portion 69. One end of the worm 41 is connected to the relay shaft outside the casing 60.
  • the worm 41 rotates based on the rotation of the relay shaft.
  • the worm wheel 42 is rotatably provided about an axis extending in the vertical direction.
  • a shaft hole through which the shaft 45 is inserted is formed in the center of the worm wheel 42.
  • the worm wheel 42 is fixed to the shaft 45.
  • the shaft 45 rotates integrally with the worm wheel 42.
  • FIGS. 6 and 7 are perspective views showing a part of the gear mechanism of the embodiment.
  • FIG. 6 shows a state in which the lid 73 is removed from the gear mechanism 13 shown in FIG.
  • FIG. 7 shows a state in which the upper plate 55, which will be described later, is removed from the gear mechanism 13 shown in FIG.
  • the tap instruction mechanism 50 rotatably supports a plurality of gears 51, a plurality of gear shafts 52 in which each gear 51 is assembled one by one, and a plurality of gear shafts 52.
  • a gear case 53 is provided.
  • the tap instruction mechanism 50 can be incorporated from above inside the main body 72 of the second accommodating portion 71 of the casing 60 in a state where each component is integrally combined and unitized.
  • the gear case 53 includes a lower plate 54 located below the plurality of gears 51, an upper plate 55 located above the plurality of gears 51, and a lower plate 54 and an upper plate 55. It is provided with a plurality of columns 56 intervening between the columns.
  • the lower plate 54 is formed in a disk shape.
  • the lower plate 54 is formed to have a diameter larger than that of the upper end opening of the wheel accommodating portion 68.
  • the outer peripheral portion of the lower plate 54 is placed on the inner bottom surface of the main body 72 of the second accommodating portion 71 from above around the upper end opening of the wheel accommodating portion 68.
  • the outer peripheral portion of the lower plate 54 is fastened to the bottom portion of the main body 72 of the second accommodating portion 71.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

Un changeur de prises en charge selon un mode de réalisation de la présente invention comprend : un sélecteur de prises ; un commutateur de changement ; un corps de réservoir d'huile ; un couvercle de réservoir d'huile ; une bride ; une partie relais ; et un arbre d'entraînement. Le corps de réservoir d'huile comporte un réservoir dans lequel est contenu le commutateur de changement. Le corps de réservoir d'huile est formé avec une ouverture de réservoir d'huile à travers laquelle le commutateur de changement peut être passé. Le couvercle de réservoir d'huile ferme l'ouverture de réservoir d'huile du corps de réservoir d'huile. La bride s'étend à partir du corps de réservoir d'huile. La bride est reliée au réservoir. La bride ferme un espace entre l'ouverture du réservoir et le corps de réservoir d'huile. La partie relais est disposée sur la bride. La partie relais introduit la force d'entraînement d'une source d'entraînement disposée à l'extérieur du réservoir dans le réservoir. La partie d'arbre est disposée dans le réservoir. L'arbre d'entraînement transmet la force d'entraînement introduite dans le réservoir par la partie relais au sélecteur de prises et au commutateur de changement.
PCT/JP2019/046122 2019-11-26 2019-11-26 Changeur de prises en charge WO2021106065A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021560794A JP7095185B2 (ja) 2019-11-26 2019-11-26 負荷時タップ切換器
PCT/JP2019/046122 WO2021106065A1 (fr) 2019-11-26 2019-11-26 Changeur de prises en charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/046122 WO2021106065A1 (fr) 2019-11-26 2019-11-26 Changeur de prises en charge

Publications (1)

Publication Number Publication Date
WO2021106065A1 true WO2021106065A1 (fr) 2021-06-03

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PCT/JP2019/046122 WO2021106065A1 (fr) 2019-11-26 2019-11-26 Changeur de prises en charge

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JP (1) JP7095185B2 (fr)
WO (1) WO2021106065A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023084751A1 (fr) * 2021-11-12 2023-05-19 株式会社東芝 Changeur de prises en charge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008091393A (ja) * 2006-09-29 2008-04-17 Toshiba Corp 負荷時タップ切換器
JP2015106582A (ja) * 2013-11-28 2015-06-08 株式会社東芝 負荷時タップ切換器
JP2015192054A (ja) * 2014-03-28 2015-11-02 株式会社ダイヘン 負荷時タップ切換装置の切換開閉器用真空バルブの異常検出方法
JP2016524349A (ja) * 2013-07-16 2016-08-12 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 負荷時タップ切換器
JP2017515308A (ja) * 2014-05-08 2017-06-08 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 位置表示器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008091393A (ja) * 2006-09-29 2008-04-17 Toshiba Corp 負荷時タップ切換器
JP2016524349A (ja) * 2013-07-16 2016-08-12 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 負荷時タップ切換器
JP2015106582A (ja) * 2013-11-28 2015-06-08 株式会社東芝 負荷時タップ切換器
JP2015192054A (ja) * 2014-03-28 2015-11-02 株式会社ダイヘン 負荷時タップ切換装置の切換開閉器用真空バルブの異常検出方法
JP2017515308A (ja) * 2014-05-08 2017-06-08 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 位置表示器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023084751A1 (fr) * 2021-11-12 2023-05-19 株式会社東芝 Changeur de prises en charge

Also Published As

Publication number Publication date
JP7095185B2 (ja) 2022-07-04
JPWO2021106065A1 (fr) 2021-06-03

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