JPS6224167A - Electric testing of bushings - Google Patents

Electric testing of bushings

Info

Publication number
JPS6224167A
JPS6224167A JP16481285A JP16481285A JPS6224167A JP S6224167 A JPS6224167 A JP S6224167A JP 16481285 A JP16481285 A JP 16481285A JP 16481285 A JP16481285 A JP 16481285A JP S6224167 A JPS6224167 A JP S6224167A
Authority
JP
Japan
Prior art keywords
bushing
tank
oil
gas
test
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.)
Pending
Application number
JP16481285A
Other languages
Japanese (ja)
Inventor
Fumio Kobayashi
二三夫 小林
Isao Terasawa
寺沢 功
Takihiro Mizoguchi
溝口 滝弘
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
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 NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP16481285A priority Critical patent/JPS6224167A/en
Publication of JPS6224167A publication Critical patent/JPS6224167A/en
Pending legal-status Critical Current

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  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE:To attempt simplification of construction and improvement of working efficiency, by mounting a gas tank onto a flange of a prototype bushing, sealing with gas inside of the gas tank by closing tightly the inside-oil part setting tank in vacuum, introducing the inside-olil part into oil storage tank containing insulating oil and applying a resting electric voltage between inside-oil dielectric body and flange. CONSTITUTION:On the outside of an oil storage tank 1, an inside-oil side central dielectric body 2a of a bushing 2 is screwed into a suspension metallic piece 4 and the bushing 2 is suspended. Next, a cover-plate 3a is mounted on a flange 2a of the bushing 2 through an insulating plate 13 and tha tank proper 3b is fastened to the cover-plate 3a. And, after drawing air from the gas tank 3 to vacuum, SF6 gas is introduced under pressure into the tank. Later, by operating a hoist, the bushing 2 is lowered together with the tank 3 and the tank and the inside-oil part 2b of the bushing are immersed in the oil storage tank. In this state, a testing voltage is applied through a lead wire 11. Thus, commercial frequency voltage resistance test, electrostatic capacity test, etc. can be performed for detection of individual test data by a lead wire 12.

Description

【発明の詳細な説明】 発明の目的 (産業上の利用分野) 本発明はガスー油貫通用ブッシングの電気的性能を測定
するブッシングの電気試験方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a bushing electrical test method for measuring the electrical performance of a gas-oil penetration bushing.

(従来の技術) 従来、ブッシングの電気試験方法を第3図に従って説明
すると、SF6ガス等のガスを封入し得るガスタンク3
1を上下二つのガスタンク31a。
(Prior Art) A conventional electrical test method for bushings will be explained with reference to FIG.
1 is an upper and lower gas tank 31a.

31bに分割し、上部タンク31aの蓋板に引込用ブッ
シング32を貫通固定する。一方、測定用リード線38
が接続された下部タンク31bの底板には供試用ブッシ
ング33を絶縁板36を介して貫通固定し、その後、供
試用ブッシング33の上部電極と引込用ブッシング32
の下部電極とを連結シールド34及びスプリング35に
より係合するとともに、上部タンク31aと下部タンク
31bとをボルトにより嵌合固定する。次に、前記ガス
タンク31内を真空に引いて図示しない供給口からSF
aガス等のガスを封入する。そして、供試用ブッシング
33下部に油中シールド37を取付け、絶縁油を収容し
た貯油槽lに供試用ブッシング33の油中側33aを入
れる。最後に、前記引込用ブッシング32に電圧を印加
して、供試用ブッシング33の商用周波耐電圧試験、雷
インパルス耐電圧試験、誘電正接試験、コロナ試験及び
静電容量試験等をするようになっている。
31b, and a retraction bushing 32 is fixed to the cover plate of the upper tank 31a through the upper tank 31a. On the other hand, the measurement lead wire 38
The test bushing 33 is penetrated and fixed to the bottom plate of the lower tank 31b to which the test bushing 31 is connected via the insulating plate 36, and then the upper electrode of the test bushing 33 and the lead-in bushing 32 are fixed.
The upper tank 31a and the lower tank 31b are engaged with each other by a connecting shield 34 and a spring 35, and are fitted and fixed with bolts. Next, the inside of the gas tank 31 is evacuated and SF is supplied from a supply port (not shown).
Fill with gas such as a gas. Then, the submerged oil shield 37 is attached to the lower part of the test bushing 33, and the submerged oil side 33a of the test bushing 33 is placed in the oil storage tank l containing insulating oil. Finally, a voltage is applied to the lead-in bushing 32, and the test bushing 33 is subjected to commercial frequency withstand voltage tests, lightning impulse withstand voltage tests, dielectric loss tangent tests, corona tests, capacitance tests, etc. There is.

(発明が解決しようとする問題点) ところが、従来の電気試験方法はガスタンク31内に引
込用ブッシング32の下部を収容するため、同ガスタン
ク31が二つ割となり、かつ容積が大きくなり、従って
ガスタンク31内に封入する高価なSFe等のガス量が
多くなり、試験費用が高くなる。又、引込用ブッシング
32と供試用ブッシング33の組付作業、真空引き、ガ
ス封入等の準備作業の工程数が多く面倒で、時間がかか
り、効率良く試験を実施できず、さらに、引込用ブッシ
ング32を使用していたため、装置全体が大型化し、タ
ンク等の製作費が高くなるという問題点がある。
(Problems to be Solved by the Invention) However, in the conventional electrical testing method, the lower part of the retracting bushing 32 is housed inside the gas tank 31, so the gas tank 31 is divided into two parts, and the volume becomes large. The amount of expensive gas such as SFe sealed in 31 increases, and the test cost increases. In addition, the preparatory work such as assembling the retracting bushing 32 and the test bushing 33, evacuation, gas filling, etc. is cumbersome and time consuming, making it difficult to conduct tests efficiently. 32, the overall size of the device becomes large and the manufacturing cost of tanks and the like increases.

発明の構成 (問題点を解決するための手段) 本発明は前記問題点を解決するため、供試用ブッシング
2のフランジ2dにガスタンク3を取着して同ブッシン
グ2のガス中側2cを密封するとともに、同ガスタンク
3内を真空引きしてガスを封入し、一方、絶縁油を収容
した貯油[1内に前記ブッシング2の油中側2bを入れ
、前記ブッシング2の油中側中心導体2aとフランジ2
dとの間に試験用電圧を印加するという手段を採用して
いる。
Structure of the Invention (Means for Solving Problems) In order to solve the above-mentioned problems, the present invention attaches a gas tank 3 to the flange 2d of the test bushing 2 and seals the gas inner side 2c of the bushing 2. At the same time, the inside of the gas tank 3 is evacuated and gas is sealed, while the oil side 2b of the bushing 2 is placed in the oil storage 1 containing insulating oil, and the oil side central conductor 2a of the bushing 2 is Flange 2
A method is adopted in which a test voltage is applied between d and d.

(作用) 本発明は前記手段を採用したことにより、ガスタンク3
が小型化され、そのガスタンク3内に封入されるガスの
量が少なくなるとともに、真空引きに要する時間が短縮
される。また、ガスタンク3の構造が簡素化され、供試
用ブッシング2の組付作業が容易に行なわれ、作業能率
が向上する。
(Function) The present invention employs the above means, so that the gas tank 3
is miniaturized, the amount of gas sealed in the gas tank 3 is reduced, and the time required for evacuation is shortened. Furthermore, the structure of the gas tank 3 is simplified, the test bushing 2 can be easily assembled, and work efficiency is improved.

(実施例) 以下、本発明の電気試験方法に使用される装置の一実施
例を第1.2図に従って説明する。
(Example) An example of the apparatus used in the electrical testing method of the present invention will be described below with reference to FIG. 1.2.

第1図は供試用ブッシング2を電気試験装置に装着した
状態を示す。絶縁油を収容した貯油槽l内には、中心導
体2aを有する供試用ブッシング2が起立状態に吊下さ
れている。同供試用ブッシング2は油中側2bと、ガス
中側2cと、両ブッシング油中側2b及びガス中側2c
の境界となるフランジ2dとからなっている。前記供試
用ブッシング2のフランジ2dには、SF&ガス等の絶
縁耐力の高いガスを封入し得る円筒状のガスタンク3の
気密蓋板3aが絶縁板13を介してボルトにより取付ら
れ、同蓋板3aにはタンク本体3bがボルトにより接合
固定され、ブッシングガス中側2cを密封している。ま
た、ブッシングガス中側2cの中心導体2aの突出部は
コロナ防止用のシールドSにより覆われている。
FIG. 1 shows a state in which the test bushing 2 is mounted on an electrical testing device. A test bushing 2 having a center conductor 2a is suspended in an upright state in an oil storage tank l containing insulating oil. The test bushing 2 has an oil inside side 2b, a gas inside side 2c, and both bushings have an oil inside side 2b and a gas inside side 2c.
and a flange 2d that serves as a boundary between the two. An airtight lid plate 3a of a cylindrical gas tank 3 capable of sealing gas with high dielectric strength such as SF & gas is attached to the flange 2d of the test bushing 2 with bolts via an insulating plate 13. A tank body 3b is fixedly connected to the tank body 3b by bolts, and the bushing gas inner side 2c is sealed. Further, the protrusion of the center conductor 2a on the bushing gas middle side 2c is covered with a shield S for corona prevention.

・第2図に示すように、前記供試用ブッシング2の油中
側の中心導体2aにはネジ孔4aを設けた吊下金具4が
螺合され、同吊下金具4の上端部には正面T型の係合筒
4bが立設固着されている。
- As shown in Fig. 2, a hanging fitting 4 having a screw hole 4a is screwed onto the central conductor 2a on the oil side of the test bushing 2, and the upper end of the hanging fitting 4 has a front A T-shaped engagement cylinder 4b is fixed in an upright position.

前記係合筒4bには0字金具5がビン6により連結され
、同U字金具5にワイヤ7が掛止されている。
A O-shaped metal fitting 5 is connected to the engagement tube 4b by a pin 6, and a wire 7 is hooked to the U-shaped metal fitting 5.

前記供試用ブッシング2の上端部、吊下金具4.0字金
具5及びワイヤ7の下端部の外周には二分割された有蓋
有底円筒状のコロナ防止用シールド8が取着されている
。また、ワイヤ7には円筒状をなすコロナ防止用シール
ド9が複数個取着されている。さらに、ワイヤ7の先端
には上下端にコロナ防止用シールド10a、10bを存
する絶縁碍子10が取着され、図示しないボイス1−に
より吊下されている。
A corona prevention shield 8 in the form of a cylinder with a lid and a bottom divided into two parts is attached to the outer periphery of the upper end of the test bushing 2, the hanging metal fitting 4.0-shaped metal fitting 5, and the lower end of the wire 7. Further, a plurality of cylindrical corona prevention shields 9 are attached to the wire 7. Furthermore, an insulator 10 having corona prevention shields 10a and 10b at its upper and lower ends is attached to the tip of the wire 7, and is suspended by a voice 1- (not shown).

また、絶縁碍子10下端のワイヤ7には試験電圧印加用
のリード線11が、ガスタンク3の気密蓋板3aには測
定用のリード線12が接続されている。
Further, a lead wire 11 for applying a test voltage is connected to the wire 7 at the lower end of the insulator 10, and a lead wire 12 for measurement is connected to the airtight lid plate 3a of the gas tank 3.

次に以上のように構成した電気試験装置にjリブフラン
ジの試験方法を説明する。
Next, a method of testing a J-rib flange using the electrical testing apparatus configured as described above will be explained.

まず、貯油槽1の外側において吊下金具4に対し、供試
用ブッシング2の油中側中心導体2aを喀大して同供試
用ブッシング2を吊下する。次いで同供試用ブッシング
2のフランジ2dに絶縁板13を介して蓋板3aを取着
し、同蓋板3aにタンク本体3bを接合固定する。そし
て、ガスタンク3内を真空引きした後、SF6ガス等の
ガス供給装置から図示しない供給口を介してガスタンク
3内にSF6ガスを圧入する(2〜5気圧)。その後ホ
イストを作動し゛て、供試用ブッシング2をガスタンク
3とともに、降下して、ガスタンク3及びブッシング油
中側2bを貯油槽1中に浸す。
First, the oil-submerged center conductor 2a of the test bushing 2 is expanded to suspend the test bushing 2 from the hanging fitting 4 on the outside of the oil storage tank 1. Next, the cover plate 3a is attached to the flange 2d of the test bushing 2 via the insulating plate 13, and the tank body 3b is bonded and fixed to the cover plate 3a. After the inside of the gas tank 3 is evacuated, SF6 gas is pressurized into the gas tank 3 from a gas supply device such as SF6 gas (2 to 5 atmospheres) through a supply port (not shown). Thereafter, the hoist is operated, and the test bushing 2 is lowered together with the gas tank 3, so that the gas tank 3 and the inner bushing oil side 2b are immersed in the oil storage tank 1.

この状態で、リード線11に対し、試験用電圧を印加す
る。こうして、商用周波耐電圧試験、雷インパルス耐電
圧試験、静電容量試験、誘電正接試験あるいはコロナ試
験が行なわれ、リード線12により各試験のデータが検
出される。
In this state, a test voltage is applied to the lead wire 11. In this way, a commercial frequency withstand voltage test, a lightning impulse withstand voltage test, a capacitance test, a dielectric loss tangent test, or a corona test is performed, and the data of each test is detected by the lead wire 12.

なお、試験を終了した後、ホイストを作動して貯油槽1
内から供試用ブッシング2及びガスタンク3を引き上げ
る。
In addition, after completing the test, operate the hoist to remove oil tank 1.
Pull up the test bushing 2 and gas tank 3 from inside.

この実施例においては、従来例と比して引込用ブッシン
グを使用しなくてもよいので、ガスタンク3の容積が1
/2〜1/3程度に小型化され、そのガスタンク3内に
封入される高価なSF6ガスの量が少なくなり、真空引
きに要する時間も短縮できる。また、前述したようにガ
スタンク3内への引込用ブッシングを省略で°き、ガス
タンク3を二分割しなくてもよいため、構造が簡素化さ
れ、−組付作業の工程数が減り、作業が容易に行なわれ
、作業能率が向上するばかりか、タンク等の製作費が安
価となる。
In this embodiment, unlike the conventional example, there is no need to use a retraction bushing, so the volume of the gas tank 3 is reduced to 1.
The size is reduced to about 1/2 to 1/3, the amount of expensive SF6 gas sealed in the gas tank 3 is reduced, and the time required for evacuation can also be shortened. In addition, as mentioned above, the bushing for drawing into the gas tank 3 can be omitted, and the gas tank 3 does not have to be divided into two parts, so the structure is simplified, - the number of assembly steps is reduced, and the work is simplified. Not only is it easy to perform and improves work efficiency, but the manufacturing cost of tanks and the like is also reduced.

発明の効果 以上詳述したように、本発明は従来例と比べてガスタン
クの容積を1/2〜173程度に小型化できるとともに
、そのガスタンク中に封入するガスの量を少なくでき、
真空引きに要する時間も短縮できる。また、ガスタンク
内への引込用ブッシングを省略できるため、ガスタンク
を二分割する必要がなくなり、構造を簡素化でき、タン
ク製作費9紐付作業の工程数が減り、作業を簡単、かつ
迅速に行い、作業能率を向上できるという効果がある。
Effects of the Invention As detailed above, the present invention can reduce the volume of the gas tank to about 1/2 to 173 times that of the conventional example, and can reduce the amount of gas sealed in the gas tank.
The time required for vacuuming can also be shortened. In addition, since the bushing for retracting into the gas tank can be omitted, there is no need to divide the gas tank into two, simplifying the structure, reducing the number of steps in tank manufacturing costs, and making the work easier and faster. This has the effect of improving work efficiency.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明を具体化した一実施例を示す正断面図、
第2図は同じく供試用ブッシングの吊下状態を示す分解
斜視図、第3図は従来例を示す正断面図である。 1・・・貯油槽、2・・・供試用ブッシング、2a・・
・中心導体、2b・・・ブッシング油中側、2c・・・
ブッシングガス中側、2d・・・フランジ、3・・・ガ
スタンク。
FIG. 1 is a front sectional view showing an embodiment embodying the present invention;
FIG. 2 is an exploded perspective view showing the test bushing in a suspended state, and FIG. 3 is a front sectional view showing a conventional example. 1... Oil storage tank, 2... Test bushing, 2a...
・Center conductor, 2b...Bushing oil inside, 2c...
Bushing gas middle side, 2d... flange, 3... gas tank.

Claims (1)

【特許請求の範囲】 1 供試用ブッシング(2)のフランジ(2d)にガス
タンク(3)を取着して同ブッシング(2)のガス中側
(2c)を密封するとともに、同ガスタンク(3)内を
真空引きしてガスを封入し、一方、絶縁油を収容した貯
油槽(1)内に前記ブッシング(2)の油中側(2b)
を入れ、前記ブッシング(2)の油中側中心導体(2a
)とフランジ(2d)との間に試験用電圧を印加するこ
とを特徴とするブッシングの電気試験方法。 2 前記供試用ブッシング(2)の油中側(2b)を上
にして同ブッシング(2)を吊下し、ガスタンク(3)
及びブッシング油中側(2b)を貯油槽(1)内に入れ
る特許請求の範囲第1項に記載のブッシングの電気試験
方法。
[Claims] 1. A gas tank (3) is attached to the flange (2d) of the test bushing (2), and the gas inner side (2c) of the bushing (2) is sealed, and the gas tank (3) is The interior of the bushing (2) is evacuated and gas is filled in, while the oil side (2b) of the bushing (2) is placed in the oil storage tank (1) containing insulating oil.
into the oil-inside center conductor (2a) of the bushing (2).
) and a flange (2d). 2. Suspend the test bushing (2) with the oil side (2b) facing upward, and attach it to the gas tank (3).
and the bushing oil inner side (2b) is placed in the oil storage tank (1).
JP16481285A 1985-07-24 1985-07-24 Electric testing of bushings Pending JPS6224167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16481285A JPS6224167A (en) 1985-07-24 1985-07-24 Electric testing of bushings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16481285A JPS6224167A (en) 1985-07-24 1985-07-24 Electric testing of bushings

Publications (1)

Publication Number Publication Date
JPS6224167A true JPS6224167A (en) 1987-02-02

Family

ID=15800386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16481285A Pending JPS6224167A (en) 1985-07-24 1985-07-24 Electric testing of bushings

Country Status (1)

Country Link
JP (1) JPS6224167A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719628U (en) * 1993-09-16 1995-04-07 株式会社銀星社 One way clutch bearing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815168A (en) * 1981-07-22 1983-01-28 Hitachi Ltd Testing method of bushing
JPS5828672A (en) * 1981-08-14 1983-02-19 Hitachi Ltd Bushing insulation tester

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815168A (en) * 1981-07-22 1983-01-28 Hitachi Ltd Testing method of bushing
JPS5828672A (en) * 1981-08-14 1983-02-19 Hitachi Ltd Bushing insulation tester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719628U (en) * 1993-09-16 1995-04-07 株式会社銀星社 One way clutch bearing

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