JPH0261126B2 - - Google Patents
Info
- Publication number
- JPH0261126B2 JPH0261126B2 JP57103854A JP10385482A JPH0261126B2 JP H0261126 B2 JPH0261126 B2 JP H0261126B2 JP 57103854 A JP57103854 A JP 57103854A JP 10385482 A JP10385482 A JP 10385482A JP H0261126 B2 JPH0261126 B2 JP H0261126B2
- Authority
- JP
- Japan
- Prior art keywords
- switching
- switch
- tap
- cylindrical structure
- insulating cylinder
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 10
- 238000007689 inspection Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、負荷をかけたままの状態でタツプの
切り換えをすることができる負荷時タツプ切換器
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an on-load tap changer that can change taps while a load is applied.
近年、変圧器の超高圧化、大容量化に伴い変圧
器自体が大型化し、輸送上の寸法制限等に対する
問題が表面化している。そこで、幅方向の寸法に
対しては、単相変圧器３台を使用して三相器を構
成することにより、１台当りの幅寸法を小さくす
る方法等が採用されている。これに対して、高さ
方向の寸法を小さくするためには、変圧器の巻線
部分そのものの高さを低く押える必要があるばか
りでなく、負荷時タツプ切換器の高さをも低くす
ることが必要である。
In recent years, transformers themselves have become larger as the voltage and capacity of transformers have increased, and problems such as dimensional restrictions for transportation have surfaced. Therefore, with respect to the dimension in the width direction, a method is adopted in which the width dimension of each transformer is reduced by constructing a three-phase transformer using three single-phase transformers. On the other hand, in order to reduce the height dimension, it is not only necessary to reduce the height of the transformer winding itself, but also to reduce the height of the on-load tap changer. is necessary.
負荷時タツプ切換器には従来から一般的に使用
されてきた油中でタツプの切り換えを行なう油入
式と、近年普及してきた気中において切り換えが
できる真空バルブを使用した方式とがある。この
真空バルブを使用した負荷時タツプ切換器は、電
流開閉部分に真空バルブを使用しているため、接
点部分の摩耗がほとんど無視でき、保守点検が容
易であつて点検回数を少なくすることができるば
かりでなく、最近のガス絶縁変圧器のような防災
変圧器に対して、火花源とならないところから必
要とされ、普及が著しい。 There are two types of on-load tap changers: an oil-immersed type that switches the taps in oil, which has been commonly used in the past, and a type that uses a vacuum valve, which has become popular in recent years, and which can change the taps in air. This on-load tap changer using a vacuum valve uses a vacuum valve in the current switching part, so wear on the contact part can be almost ignored, making maintenance and inspection easy and reducing the number of inspections. In addition, they are needed for disaster prevention transformers such as recent gas-insulated transformers, since they do not become a source of sparks, and are becoming increasingly popular.
これらいずれの負荷時タツプ切換器において
も、フロアスペースを小さくする等のため、タツ
プ切換部と切換開閉部とは上下方向に直列的に配
設されているのが普通である。その一例を第１図
に示す。 In any of these on-load tap changers, the tap change section and the switching opening/closing section are usually arranged in series in the vertical direction in order to reduce the floor space. An example is shown in FIG.
変圧器本体１０内に収納してあるタツプ切換器
１２は、複数の固定接触子が外面に設けてあり、
この固定接触子１４に図示しない巻線のタツプと
接続してある接続リード線１６が結合されてい
る。そして、タツプ選択器１２の側方には、極性
または転位切換器１８が設けてある。このタツプ
切換器１２、と極性または転位切換器１８の上方
には、接続金具２０を介して切換開閉器２２が設
けられている。また、変圧器本体１０の上部には
駆動機構２４が取付けられていて、伝動軸２６を
介して図示しない駆動装置から伝達された駆動力
により、切換開閉器２２を駆動すると共に、絶縁
操作軸２８を介してタツプ選択器１２及び極性ま
たは転位切換器１８を操作できるようになつてい
る。 A tap changer 12 housed within the transformer body 10 has a plurality of fixed contacts provided on its outer surface.
A connecting lead wire 16 connected to a tap of a winding (not shown) is coupled to the fixed contact 14. A polarity or shift switch 18 is provided on the side of the tap selector 12. A switching switch 22 is provided above the tap switch 12 and the polarity or shift switch 18 via a connecting fitting 20. Further, a drive mechanism 24 is attached to the upper part of the transformer body 10, and drives the switching switch 22 by driving force transmitted from a drive device (not shown) via a transmission shaft 26, and also drives an insulated operating shaft 28. A tap selector 12 and a polarity or shift switch 18 can be operated via the switch.
このような構造の負荷時タツプ切換器において
は、切換開閉器２２が接続金具２０を介してタツ
プ切換器１２と極性または転位相換器１８との上
方に配置されているため、絶縁上の寸法を考慮す
ると負荷時タツプ切換器の高さをある程度以上高
くせざるを得ないという欠点があつた。そのた
め、変圧器の巻線の高さを低くすることができた
としても、負荷時タツプ切換器の高さが高いため
背丈の低い変圧器を製作することが困難であつ
た。
In the on-load tap changer having such a structure, the changeover switch 22 is disposed above the tap changer 12 and the polarity or inversion phase changer 18 via the connection fitting 20, so that the insulation dimension is In consideration of this, there was a drawback that the height of the tap changer had to be increased to a certain extent during load. Therefore, even if the height of the transformer winding could be reduced, the height of the on-load tap changer was high, making it difficult to manufacture a short transformer.
そこで、このような背丈の低い変圧器を可能と
するため、タツプ選択器の中心軸に同心的に２重
の絶縁筒を配置し、同じ電位にある切換開閉器お
よびタツプ選択器を一平面内に配置したタツプ切
換器が知られている（特開昭55−132020号公報）。
しかし、この従来タツプ切換器は、内部の保守点
検等については配慮されていない。すなわち、タ
ツプ選択器部分は構造的に複雑であり、変圧器内
の絶縁媒体中に置かれているため、接触子の噛み
合い等の不具合が生じた場合には変圧器内の絶縁
媒体を全て抜き、タツプリードを外した後に、負
荷時タツプ切換器全体を吊り上げる等、多大な手
間と費用を必要とし、点検、保守が困難であつ
た。 Therefore, in order to make such a short transformer possible, a double insulating cylinder is placed concentrically around the central axis of the tap selector, and the switching switch and tap selector, which are at the same potential, are placed in one plane. A tap changer is known (Japanese Unexamined Patent Publication No. 132020/1983).
However, this conventional tap changer does not take into consideration internal maintenance and inspection. In other words, the tap selector part is structurally complex and is placed in the insulating medium inside the transformer, so if a problem such as contact engagement occurs, all the insulating medium inside the transformer must be removed. However, after removing the tap leads, lifting the entire tap changer under load requires a great deal of effort and expense, making inspection and maintenance difficult.
本発明は、変圧器の小型化を図るとともに、分
解、組立を容易にして保守、点検の容易化を可能
とする負荷時タツプ切換器を提供することを目的
とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide an on-load tap changer that can reduce the size of a transformer, and that can be easily disassembled and assembled to facilitate maintenance and inspection.
上記問題点は、切換開閉器５１，５２，５４と
タツプ選択器６０〜６６，７２〜８４他と極性ま
たは転位切換器１００〜１０６他とを円筒状の外
部絶縁筒７４内に収納してなり、前記切換開閉器
５１，５２，５４は前記外部絶縁筒内に同心的に
配置された円筒状構造体３４内に設けられ、中心
の操作軸３２，４０の回転により電路の切換を行
うものとされてなり、前記タツプ選択器は、前記
切換開閉器に接続され前記円筒状構造体の外周部
に設けられた複数の集電接触子６０，６２，６
４，６６と、該各集電接触子に対向させて前記外
部絶縁筒の内周部に設けられた複数の固定接触子
７６，７８，８２，８４と、前記切換開閉器の操
作軸にそれぞれ同軸に設けられた第１と第２の回
転軸９２Ａ，９２Ｂと、該各回転軸にそれぞれ支
持された第１と第２の操作腕９４，９６と、該各
操作腕の回転により前記集電接触子と該集電接触
子に対向する固定接触子とを接続・開離可能に該
各操作腕に取付られた第１と第２の可動接触子７
２，８０とを含んでなり、前記極性または転位切
換器は、前記円筒状構造体の上方の前記外部絶縁
筒の内周部に設けられた切換固定接触子１００，
１０２…と、前記操作軸３２，４０と同軸に設け
られた第３の回転軸１１６に取付られた切換操作
腕１０４と、該切換操作腕の先端に取付られ該切
換操作腕の回転により前記切換固定接触子と接
続・開離可能に設けられた切換可動接触子１０６
とを含んでなり、前記操作軸と前記第１と第２と
第３の回転軸とを前記外部絶縁筒の頂部に着脱可
能に設けられた上部金具１１４に軸支されるとと
もに、該上部金具に前記各軸を回転駆動する回転
駆動装置と前記円筒状構造体とを支持させてなる
負荷時タツプ切換器とすることによつて解決され
る。
The above problem is solved by housing the switching switches 51, 52, 54, tap selectors 60-66, 72-84, etc., polarity or shift switching devices 100-106, etc. in a cylindrical external insulating tube 74. , the switching switches 51, 52, 54 are provided in a cylindrical structure 34 that is arranged concentrically within the external insulating cylinder, and switch the electric circuit by rotating the central operating shafts 32, 40. The tap selector includes a plurality of current collecting contacts 60, 62, 6 connected to the switching switch and provided on the outer periphery of the cylindrical structure.
4, 66, a plurality of fixed contacts 76, 78, 82, 84 provided on the inner periphery of the external insulating cylinder to face each of the current collector contacts, and a plurality of fixed contacts 76, 78, 82, 84 provided on the operating shaft of the switching switch, respectively. First and second rotating shafts 92A and 92B coaxially provided, first and second operating arms 94 and 96 respectively supported by the respective rotating shafts, and the current collection due to the rotation of each operating arm. first and second movable contacts 7 attached to each operating arm so as to be able to connect and disconnect the contact and a fixed contact facing the current collecting contact;
2, 80, and the polarity or dislocation switch includes a switching fixed contact 100 provided on the inner circumference of the external insulating cylinder above the cylindrical structure,
102..., a switching operation arm 104 attached to a third rotating shaft 116 provided coaxially with the operating shafts 32, 40, and a switching operation arm 104 attached to the tip of the switching operation arm and rotating the switching operation arm. A switching movable contact 106 that can be connected to and separated from a fixed contact.
The operating shaft and the first, second, and third rotating shafts are pivotally supported by an upper metal fitting 114 that is removably provided at the top of the external insulating cylinder, and the upper metal fitting The problem is solved by providing a load tap changer which supports a rotary drive device for rotationally driving each of the shafts and the cylindrical structure.
上記本発明の構成によれば、円筒状構造体内に
設けられた切換開閉器は、中心の操作軸を回転す
ることにより電路の開閉を行う。円筒状構造体の
外周部に設けた集電接触子と円筒状構造体の外側
に配置された外部絶縁筒に設けた固定接触子とを
タツプ選択器で接続・開離するが、この接続・開
離は、接続中のタツプを回転して切換える操作腕
を回転させる回転軸と、次に接続するタツプを回
転して接続する操作腕を回転させる回転軸とによ
つて行なわれ、この両回転軸は前記円筒状構造体
の上部において切換開閉器の操作腕の周囲に同軸
的に、それぞれの回転軸を交互に回転駆動する構
造（例えば、円筒を所定のすき間を設けてふたつ
割りとしたような構造）であるので、タツプ選択
器の構造および両回転軸の回転駆動装置がコンパ
クトな形状となる。
According to the configuration of the present invention, the switching switch provided within the cylindrical structure opens and closes the electric circuit by rotating the central operation shaft. The current collecting contact provided on the outer periphery of the cylindrical structure and the fixed contact provided on the external insulating cylinder placed outside the cylindrical structure are connected/disconnected using a tap selector. Disconnection is performed by a rotating shaft that rotates the operating arm that rotates the connected tap to switch, and a rotating shaft that rotates the operating arm that rotates the next tap to connect. The shaft is arranged coaxially around the operating arm of the switching switch in the upper part of the cylindrical structure, and has a structure in which each rotary shaft is alternately driven to rotate (for example, a cylinder is divided into two with a predetermined gap). Since the tap selector has a compact structure, the structure of the tap selector and the rotation drive device for both rotating shafts can be made compact.
また、極性または転位切換器は、タツプ選択器
の回転軸と同心状にその外側に回転軸が設けら
れ、この回転軸に取付けた切換操作腕の先端に設
けた切換可動接触子と前記外部絶縁筒に設けた固
定接触子が回転軸の回転により接続・開離する。 In addition, the polarity or shift switch has a rotating shaft concentrically and externally provided with the rotating shaft of the tap selector, and a switching movable contact provided at the tip of a switching arm attached to the rotating shaft and the external insulator. Fixed contacts provided on the cylinder are connected and separated by rotation of the rotating shaft.
回転駆動装置は、円筒状構造体の頂部に設けら
れ、切換開閉器の操作軸とタツプ選択器の回転軸
と極性または転位切換器の回転軸を回転駆動す
る。 The rotational drive device is provided at the top of the cylindrical structure and rotationally drives the operating shaft of the switching switch, the rotating shaft of the tap selector, and the rotating shaft of the polarity or shift switch.
そして、切換開閉器、タツプ選択器、極性また
は転位切換器は外部絶縁筒に内蔵されている。こ
のような構成のため切換開閉器、円筒状構造体、
タツプ選択器、極性または転位切換器、回転駆動
装置からなる外部絶縁筒内蔵物の小形化およびこ
れらを一体として外部に吊出し、吊込める構造が
実現できる。 The switching switch, tap selector, polarity or shift switch is built into the external insulating tube. Due to this configuration, a switching switch, a cylindrical structure,
It is possible to downsize the built-in external insulating cylinder consisting of a tap selector, a polarity or shift switch, and a rotary drive device, and to realize a structure in which these can be hung and hung outside as a whole.
〔実施例〕
本発明の負荷時タツプ切換器の好ましい実施例
を添付図面に従つて説明する。[Embodiment] A preferred embodiment of the on-load tap changer of the present invention will be described with reference to the accompanying drawings.
第２図は本発明に係る負荷時タツプ切換器の実
施例の縦断面図であり、第３図は第２図の−
線に沿う断面図、第４図は第２図の−線に沿
う断面図である。図に示した負荷時タツプ切換器
は、真空バルブを使用した３相器用の１相部分を
示したものである。第２図に示すように下部金具
３０の中央に枢支してある操作軸３２は、上端部
が内部絶縁筒３４に固定したブラケツト３６のボ
ス部貫通し、絶縁操作軸３８を介して切換開閉器
駆動軸４０と結合しており、切換開閉器駆動軸４
０と一体的に回転するようになつている。操作軸
３２は上端付近に固定した駆動腕４２には、内部
絶縁筒３４に固定した扇形フレームカイド金具４
４に沿つて移動する扇形フレーム４６が枢支され
ている。ブラケツト３６のボス部には、真空バル
ブ操作レバー４８が取付けられており、真空バル
ブ操作レバー４８の先端付近には、扇形フレーム
４６と接触する接点部５０が設けられている。ま
た第３図に示すように、内部絶縁筒３４の内部に
は３個の真空バルブ５１（VS1），５２（VS2），
５４（VS3）が固定されており、その内の１つの
真空バルブ５２には第２図に示すようにリード線
５６を介して支持金具５７により内部絶縁筒に固
定した限流抵抗５８（Ｒ）が直列に接続されてい
る。 FIG. 2 is a longitudinal cross-sectional view of an embodiment of the on-load tap changer according to the present invention, and FIG. 3 is a -
FIG. 4 is a sectional view taken along the - line in FIG. 2. The on-load tap changer shown in the figure shows a one-phase part of a three-phase switch using a vacuum valve. As shown in FIG. 2, the operating shaft 32, which is pivotally supported at the center of the lower metal fitting 30, has an upper end that passes through the boss portion of a bracket 36 fixed to the internal insulating cylinder 34, and is switched to open and close via the insulating operating shaft 38. The switch drive shaft 40 is connected to the switching switch drive shaft 40.
It is designed to rotate integrally with 0. The drive arm 42 fixed near the upper end of the operating shaft 32 has a fan-shaped frame guide fitting 4 fixed to the internal insulating cylinder 34.
A fan-shaped frame 46 that moves along the 4 is pivotally supported. A vacuum valve operating lever 48 is attached to the boss portion of the bracket 36, and a contact portion 50 that contacts the fan-shaped frame 46 is provided near the tip of the vacuum valve operating lever 48. Furthermore, as shown in FIG. 3, three vacuum valves 51 (VS 1 ), 52 (VS 2 ),
54 (VS 3 ) is fixed, and one of the vacuum valves 52 has a current limiting resistor 58 (R ) are connected in series.
なお、内部絶縁筒３４にはタツプ選択器の一部
を成す集電接触子６０，６２，…と集電接触子６
４，６６，…等がそれぞれ内部絶縁筒３４を貫通
して周方向に固定されている。そして集電接触子
６０，６２，…は、内部絶縁筒３４の内部におい
て集電リング６８により結合されており、集電接
触子６４，６６，…は集電リング７０により結合
されている。また、これら集電リング６８，７０
は、それぞれリード線を介して前記した真空バル
ブに結合されている。集電接触子６０，６２，…
は、可動接触子７２を介して内部絶縁筒３４の周
囲に設けてある外部絶縁筒７４に固定した複数の
固定接触子７６，７８，…と接続できるようにな
つている。さらに、集電接触子６４，６６，…
は、同じく可動接触子８０をして固定接触子８
２，８４，…と接続できるようになつている。 In addition, the internal insulating cylinder 34 includes current collecting contacts 60, 62, . . . which form part of the tap selector, and current collecting contacts 6.
4, 66, . . . , etc., are fixed in the circumferential direction through the inner insulating cylinder 34, respectively. The current collecting contacts 60, 62, . . . are connected by a current collecting ring 68 inside the internal insulating cylinder 34, and the current collecting contacts 64, 66, . In addition, these current collecting rings 68, 70
are connected to the vacuum valves described above via lead wires, respectively. Current collector contacts 60, 62,...
can be connected to a plurality of fixed contacts 76, 78, . . . fixed to an external insulating cylinder 74 provided around the internal insulating cylinder 34 via a movable contact 72. Furthermore, current collector contacts 64, 66,...
Similarly, the movable contact 80 is replaced with the fixed contact 8.
2, 84, etc. can be connected.
可動接触子７２，８０は、それぞれ第２図に示
すように両端部が内方へ折曲した一対の金属板か
らなつており、これら金属板は押圧ばね８６によ
り相互に接近するように付勢され、集電接触子と
固定接触子を挟むようになつている。この可動接
触子７２，８０はそれぞれ絶縁操作板８８，９０
に固定されている。絶縁操作板８８，９０は、上
端がそれぞれ駆動軸９２Ａ，９２Ｂに固定した操
作腕９４，９６の先端部に固定されており、下端
が回転板９７Ａ，９７Ｂに固定され、駆動軸９２
Ａ，９２Ｂの回転により可動接触子７２，８０を
それぞれ内部絶縁筒３４の内周に回転するように
なつている。駆動軸９２Ａ，９２Ｂと回転板９７
Ａ，９７Ｂは、それぞれ半円又は半円より小さい
円弧状断面に形成されている。なお、固定接触子
７６，７８，８２，８４，…は、それぞれ図示し
ない巻線タツプにリード線９８を介して接続され
ている。 The movable contacts 72 and 80 each consist of a pair of metal plates with both ends bent inward, as shown in FIG. 2, and these metal plates are biased toward each other by a pressure spring 86. It is designed to sandwich the current collector contact and fixed contact. These movable contacts 72 and 80 are connected to insulated operation plates 88 and 90, respectively.
is fixed. The insulated operation plates 88 and 90 have upper ends fixed to the tips of operation arms 94 and 96 fixed to the drive shafts 92A and 92B, respectively, and lower ends fixed to the rotary plates 97A and 97B, and are fixed to the drive shafts 92A and 92B.
The movable contacts 72 and 80 are rotated to the inner periphery of the internal insulating cylinder 34 by the rotation of the movable contacts A and 92B, respectively. Drive shafts 92A, 92B and rotating plate 97
A and 97B are each formed into a semicircle or an arcuate cross section smaller than a semicircle. The fixed contacts 76, 78, 82, 84, . . . are each connected to a winding tap (not shown) via a lead wire 98.
外部絶縁筒７４の上部には極性または転位切換
器の固定接触子１００，１０２，…が固定されて
いる。この固定接触子１００，１０２，…の切り
換えは、切換操作腕１０４に固定した切換可動接
触子１０６により行なわれる。即ち、図示しない
駆動装置の回転によりタツプ選択駆動軸１０８が
回転すると、駆動レバー１１０、回転板１１２を
介して上部金具１１４に軸支してある切換駆動軸
１１６が回転し、切換操作腕１０４が切換駆動軸
１１６と一体的に回転して極性または転位切換器
の切り換えが行なわれる。 Fixed contacts 100, 102, . . . of a polarity or dislocation switch are fixed to the upper part of the external insulating cylinder 74. Switching between the fixed contacts 100, 102, . . . is performed by a movable switching contact 106 fixed to a switching arm 104. That is, when the tap selection drive shaft 108 rotates due to the rotation of a drive device (not shown), the switching drive shaft 116, which is pivotally supported on the upper metal fitting 114 via the drive lever 110 and the rotary plate 112, rotates, and the switching operation arm 104 rotates. It rotates integrally with the switching drive shaft 116 to switch the polarity or shift switch.
極性または転位切換器は、第４図に示すように
１相当り３個の固定接触子ｎ，ｏ，ｐが配置され
ており、中央の固定接触子ｏを共通にして固定接
触子ｏの両端にある固定接触子ｎまたはｐを所定
のタイミングにより、選択するようになつてい
る。 As shown in Fig. 4, the polarity or shift switch has three fixed contacts n, o, and p arranged in one position, with the central fixed contact o in common, and both ends of the fixed contact o. The fixed contact n or p located at is selected at a predetermined timing.
なお、タツプ選択駆動軸１０８の回転は、送り
歯車１１８、従歯車１２０Ａ，Ｂを介して駆動軸
９２Ａ，Ｂを回転するようになつており、可動接
触子７２，８０を内部絶縁筒３４の周囲に回転さ
せる。この駆動軸９２Ａ，９２Ｂを回転して可動
接触子７２，８０を回転させる操作手順は、第５
図と第６図を用いて後述するように周知の操作で
ある。そして、それら可動接触子７２と８０を順
次回転させる機構は、公知の技術により送り歯車
１１８と従歯車１２０Ａ，Ｂを用いて容易に実現
することができることから、詳細な説明は省略す
る。また、切換開閉器駆動軸４０を軸支している
符号１２２は、軸カバーである。 Note that the tap selection drive shaft 108 rotates the drive shafts 92A, B via the feed gear 118 and the follower gears 120A, B, and moves the movable contacts 72, 80 around the internal insulating tube 34. Rotate it. The operation procedure of rotating the drive shafts 92A, 92B to rotate the movable contacts 72, 80 is as follows.
This is a well-known operation, as will be described later with reference to FIG. Since the mechanism for sequentially rotating the movable contacts 72 and 80 can be easily realized using the feed gear 118 and the follower gears 120A and 120B using known technology, detailed explanation will be omitted. Further, the reference numeral 122 which pivotally supports the switching switch drive shaft 40 is a shaft cover.
このような構造を有する負荷時タツプ切換器
は、タツプ切換器の部分を切換開閉器の周囲に同
軸的に配置したことにより、径方向の寸法を従来
とほぼ同程度に納めることができ、高さを大幅に
小さくすることができる。そして、上部金具１１
４を取り外すことにより切換開閉器、タツプ切換
器及び極性または転位切換器の部分を一度に吊り
上げることができ、従来保守が困難であつたタツ
プ切換器部分等を容易に点検保守することができ
る。 The on-load tap changer with this structure has the tap changer part coaxially arranged around the changeover switch, so the radial dimension can be kept to about the same level as conventional ones, and the height is can be significantly reduced. And the upper metal fitting 11
By removing 4, the switching switch, tap switch, and polarity or shift switch can be lifted all at once, making it possible to easily inspect and maintain the tap switch, etc., which have been difficult to maintain in the past.
前記実施例の負荷時タツプ切換器のタツプ切換
操作は従来と同様であり、切換シーケンスの一例
を第５図に示し、第５図に対応するタツプの切換
状態を第６図ａ〜第６図ｅに示す。 The tap switching operation of the on-load tap switching device of the above embodiment is the same as the conventional one, and an example of the switching sequence is shown in FIG. 5, and the switching states of the taps corresponding to FIG. 5 are shown in FIGS. 6a to 6. Shown in e.
第５図のTS1及びTS2はタツプ切換器の可動接
触子７２，８０を示すもので、斜線の部分は可動
接触子がタツプ巻線TWのタツプと接続している
ことを示している。また第５図のVS1，VS2，
VS3は、前記した真空バルブを示すもので、斜線
の部分は該当する真空バルブに電流が流れている
ことを示している。 TS 1 and TS 2 in FIG. 5 show the movable contacts 72, 80 of the tap changer, and the shaded areas indicate that the movable contacts are connected to the taps of the tap winding TW. Also, VS 1 , VS 2 ,
VS 3 indicates the vacuum valve described above, and the shaded area indicates that current is flowing through the corresponding vacuum valve.
第５図に示したａの時点においては、第６図に
示すようにTS1がタツプT1と接続しており、TS2
がタツプT2と接続し、電流はVS1を流れている。
そして、第５図矢印にて示した時点においてTS2
は、タツプT2からT3に切り換えられる。即ち、
第２図においてタツプ選択駆動軸１０８が必要角
度回転すると、前記したように可動接触子７２，
８０のいずれか一方が１タツプ部分の角度だけ内
部絶縁筒３４の周囲に回転し、次のタツプ位置に
おいて停止する。その後、図示しない早切り駆動
機構により切換開閉器駆動軸４０が急速に所定の
角度だけ回転し絶縁操作軸３８、扇形フレーム４
６、及び真空バルブ操作レバー４８等を介して真
空バルブが早切り操作される。この時の電流の流
れは、第５図及び第６図ｂ〜ｅに示す通りであ
る。また、前記したように同に所定のタイミング
において極性または転位切換器の切り換えが行な
われる。そして、第６図ｅに示した状態に至つた
時にタツプの切換操作が終了する。 At point a shown in FIG. 5, TS 1 is connected to tap T 1 as shown in FIG. 6, and TS 2
is connected to tap T 2 and current is flowing through VS 1 .
Then, at the time indicated by the arrow in Figure 5, TS 2
is switched from tap T 2 to T 3 . That is,
In FIG. 2, when the tap selection drive shaft 108 rotates by the required angle, the movable contact 72,
Either one of the taps 80 rotates around the internal insulating tube 34 by the angle of one tap and stops at the next tap position. Thereafter, the switching switch drive shaft 40 is rapidly rotated by a predetermined angle by a quick-cut drive mechanism (not shown), and the insulating operation shaft 38 and the fan-shaped frame 4 are rotated rapidly by a predetermined angle.
6, the vacuum valve operating lever 48, etc., the vacuum valve is quickly turned off. The current flow at this time is as shown in FIGS. 5 and 6 b to e. Furthermore, as described above, the polarity or shift switch is switched at the same predetermined timing. Then, when the state shown in FIG. 6e is reached, the tap switching operation is completed.
前記実施例においては真空バルブを用いた負荷
時タツプ切換時について説明したが、従来の油入
式の負荷時タツプ切換器についても同様に適用す
ることができる。 In the embodiment described above, the load tap changer using a vacuum valve has been described, but the present invention can be similarly applied to a conventional oil-filled load tap changer.
以上説明したように本発明によれば、タツプ切
換部分を切換開閉器の周囲に同軸的に配設し、こ
れらの上方に駆動機構部分及び極性または転位切
換器部分を設けたことにより高さの低い変圧器を
製作することができることに加えて、切換開閉
器、タツプ切換器、極性切換器又は転位切換器お
よび駆動機構を前記外部絶縁筒に着脱可能に取付
けられた上部金具に一体に連結されているので、
上部金具を取外すだけで上記各機器を同時に一体
的に吊り上げることができ、従来保守が困難であ
つたタツプ切換器部分を容易に点検保守すること
ができる。
As explained above, according to the present invention, the tap switching section is disposed coaxially around the switching switch, and the drive mechanism section and the polarity or shift switching section are provided above these, so that the height can be reduced. In addition to being able to fabricate a low transformer, a switching switch, a tap changer, a polarity changer or a shift changer, and a drive mechanism can be integrally connected to an upper fitting that is removably attached to the external insulating tube. Because
By simply removing the upper metal fitting, all of the above-mentioned devices can be lifted up simultaneously, and the tap changer section, which has been difficult to maintain in the past, can be easily inspected and maintained.
第１図は従来の負荷時タツプ切換器の概略を示
す説明図、第２図は本発明に係る負荷時タツプ切
換器の縦断面図、第３図は第２図の−線に沿
う断面図、第４図は第２図の−線に沿う断面
図、第５図はタツプ切換シーケンスの一例を示す
図、第６図ａ〜第６図ｅは第５図のシーケンスに
対応するタツプの切換状態を示す図である。
１２……タツプ切換器、１４，７６，７８，８
２，８４，１００，１０２……固定接触子、１８
……極性または転位切換器、２２……切換開閉
器、４０……切換開閉駆動軸、４６……扇形フレ
ーム、４８……真空バルブ操作レバー、５１，５
２，５４……真空バルブ、５８……限流抵抗、６
０，６２，６４，６６……集電接触子、７２，８
０……可動接触子、９２Ａ，９２Ｂ……駆動軸、
１０６……切換可動接触子、１１０……駆動レバ
ー、１１２……回転板、１１６……切換駆動軸、
１１８……送り歯車、１２０Ａ，Ｂ……従歯車。
Fig. 1 is an explanatory diagram schematically showing a conventional tap changer on load, Fig. 2 is a longitudinal sectional view of the tap changer on load according to the present invention, and Fig. 3 is a sectional view taken along the - line in Fig. 2. , FIG. 4 is a sectional view taken along the - line in FIG. 2, FIG. 5 is a diagram showing an example of a tap switching sequence, and FIGS. 6a to 6e are tap switching corresponding to the sequence in FIG. 5. It is a figure showing a state. 12...Tap changer, 14, 76, 78, 8
2, 84, 100, 102... Fixed contact, 18
... Polarity or shift switch, 22 ... Switching switch, 40 ... Switching opening/closing drive shaft, 46 ... Fan-shaped frame, 48 ... Vacuum valve operation lever, 51, 5
2, 54... Vacuum valve, 58... Current limiting resistor, 6
0,62,64,66...Current contact, 72,8
0...Movable contactor, 92A, 92B...Drive shaft,
106... Switching movable contact, 110... Drive lever, 112... Rotating plate, 116... Switching drive shaft,
118...Feed gear, 120A, B...Follow gear.
Claims (1)
切換器とを円筒状の外部絶縁筒内に収納してな
り、 前記切換開閉器は前記外部絶縁筒内に同心的に
配置された円筒状構造体内に設けられ、該円筒状
構造体の中心軸に一致させて設けられた操作軸の
回転により電路の切換が行われる構成とされ、 前記タツプ選択器は、前記切換開閉器に接続さ
れ前記円筒状構造体の外周部に設けられた複数の
集電接触子と、該各集電接触子に対向させて前記
外部絶縁筒の内周部に設けられた複数の固定接触
子と、前記切換開閉器の操作軸にそれぞれ同軸に
設けられた第１と第２の回転軸と、該各回転軸に
それぞれ支持された第１と第２の操作腕と、該各
操作腕の回転により前記集電接触子と該集電接触
子に対向する固定接触子とを接続・開離可能に該
各操作腕に取付られた第１と第２の可動接触子と
を含んでなり、 前記極性または転位切換器は、前記円筒状構造
体の上方の前記外部絶縁筒の内周部に設けられた
切換固定接触子と、前記操作軸と同軸に設けられ
た第３の回転軸に取付られた切換操作腕と、該切
換操作腕の先端に取付られ該切換操作腕の回転に
より前記切換固定接触子と接続・開離可能に設け
られた切換可動接触子とを含んでなり、 前記操作軸と前記第１と第２と第３の回転軸と
を前記外部絶縁筒の頂部に着脱可能に設けられた
上部金具に軸支させるとともに、該上部金具に前
記各軸を回転駆動する回転駆動装置と前記円筒状
構造体とを支持させてなる負荷時タツプ切換器。[Claims] 1. A switching switch, a tap selector, and a polarity or shift switch are housed in a cylindrical external insulating cylinder, and the switching switch is arranged concentrically within the external insulating cylinder. The tap selector is provided in a cylindrical structure in which the electrical circuit is switched by rotation of an operating shaft provided in alignment with the central axis of the cylindrical structure, and the tap selector is connected to the switching switch. a plurality of current collecting contacts connected to the cylindrical structure and provided on the outer periphery of the cylindrical structure; and a plurality of fixed contacts provided on the inner periphery of the external insulating cylinder facing each of the current collecting contacts. , first and second rotating shafts provided coaxially with the operating shaft of the switching switch, first and second operating arms respectively supported by the respective rotating shafts, and each of the operating arms. comprising first and second movable contacts attached to each of the operating arms such that the current collecting contact and a fixed contact facing the current collecting contact can be connected/disconnected by rotation; The polarity or dislocation switch is attached to a switching fixed contact provided on the inner periphery of the external insulating cylinder above the cylindrical structure and a third rotating shaft provided coaxially with the operating shaft. a switching operation arm, and a switching movable contact attached to the tip of the switching operation arm so that it can be connected to and disconnected from the switching fixed contact by rotation of the switching operation arm, a rotational drive for pivotally supporting the shaft and the first, second, and third rotating shafts on an upper metal fitting removably provided at the top of the external insulating cylinder, and rotating each of the shafts on the upper metal fitting; A load tap changer comprising a device and the cylindrical structure supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10385482A JPS58222506A (en) | 1982-06-18 | 1982-06-18 | On-load tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10385482A JPS58222506A (en) | 1982-06-18 | 1982-06-18 | On-load tap changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58222506A JPS58222506A (en) | 1983-12-24 |
| JPH0261126B2 true JPH0261126B2 (en) | 1990-12-19 |
Family
ID=14365024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10385482A Granted JPS58222506A (en) | 1982-06-18 | 1982-06-18 | On-load tap changer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58222506A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267619U (en) * | 1988-11-09 | 1990-05-22 | ||
| ITVI20040307A1 (en) * | 2004-12-27 | 2005-03-27 | Comem Spa | SWITCH WITHOUT VOLTAGE WITH MANEUVER FOR ELECTRIC TRANSFORMERS |
| KR100803086B1 (en) | 2006-10-31 | 2008-02-18 | 한국전력공사 | On load tap changing transformer for out operation |
| JP6282547B2 (en) * | 2014-07-15 | 2018-02-21 | 株式会社東芝 | Load tap changer |
| CN106935425B (en) * | 2017-03-24 | 2018-09-07 | 西安森宝电气工程有限公司 | A kind of and mating polarity switch of load ratio bridging switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55132020A (en) * | 1979-03-30 | 1980-10-14 | Mitsubishi Electric Corp | On-load tap changer |
-
1982
- 1982-06-18 JP JP10385482A patent/JPS58222506A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55132020A (en) * | 1979-03-30 | 1980-10-14 | Mitsubishi Electric Corp | On-load tap changer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58222506A (en) | 1983-12-24 |
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