JPH07122160A - Disconnector - Google Patents
DisconnectorInfo
- Publication number
- JPH07122160A JPH07122160A JP26285193A JP26285193A JPH07122160A JP H07122160 A JPH07122160 A JP H07122160A JP 26285193 A JP26285193 A JP 26285193A JP 26285193 A JP26285193 A JP 26285193A JP H07122160 A JPH07122160 A JP H07122160A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- temperature sensor
- conductor
- light
- blade
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
- H01H2011/0068—Testing or measuring non-electrical properties of switches, e.g. contact velocity measuring the temperature of the switch or parts thereof
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、通電部導体の接触部
分の接触抵抗による異常過熱を検出するようにした断路
器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disconnector for detecting abnormal overheat due to contact resistance of a contact portion of a conductor of a current-carrying part.
【０００２】[0002]
【従来の技術】電力機器としての断路器は多頻度の開閉
動作により接触子片とブレードとの接触不良を生じ易
い。そして、通電部導体には高電圧が印加されて大電流
が流れるために、その導体の接触部分が異常に過熱する
ことがある。このため、導体の異常過熱を検出するため
に導体にサーモラベルを貼ってサーモラベルの色の変化
を遠方から観察したり、サーモカメラ、赤外線温度計を
用いている。2. Description of the Related Art A disconnector as a power device is apt to cause a contact failure between a contact piece and a blade due to frequent opening and closing operations. Then, since a high voltage is applied to the current-carrying conductor and a large current flows, the contact portion of the conductor may abnormally overheat. Therefore, in order to detect abnormal overheating of the conductor, a thermolabel is attached to the conductor to observe the color change of the thermolabel from a distance, and a thermo camera or an infrared thermometer is used.
【０００３】[0003]
【発明が解決しようとする課題】ところが、サーモラベ
ルは安価であるけれども色の変化を検出する方法を検討
しないと常時監視できない問題があるとともに耐久性に
劣る問題もある。However, although thermolabels are inexpensive, there are problems that they cannot be constantly monitored unless a method for detecting a color change is considered and that they are inferior in durability.
【０００４】また、サーモカメラは高価であって、セン
サ部分の長期安定性に問題があり、赤外線温度計は測定
距離が数メートルになると温度測定範囲が広くなり温度
測定感度が低下する。Further, the thermo camera is expensive, and there is a problem in the long-term stability of the sensor portion, and the infrared thermometer has a wide temperature measuring range and a low temperature measuring sensitivity when the measuring distance becomes several meters.
【０００５】更に、測定対象物の表面状況により設定時
に測定温度の校正を行う必要がある。Further, it is necessary to calibrate the measurement temperature at the time of setting depending on the surface condition of the object to be measured.
【０００６】そこで本発明は、斯かる課題を解決した断
路器を提供することを目的とする。[0006] Therefore, an object of the present invention is to provide a disconnector which solves the above problems.
【０００７】[0007]
【課題を解決するための手段】斯る目的を達成するため
の本発明の構成は、一方の導体に接続された接触子片を
設け、他方の導体に接続されるとともに基端部が回動自
在に支持されかつ先端部が接触子片に接離自在なブレー
ドを設けた断路器において、設定温度以上になると光路
を遮断する温度センサをブレードの先端近傍に固定する
一方、温度センサへ送るための光を発する発光部と温度
センサから送られてきた光を受光する受光部とからなる
光電スイッチを設け、光電スイッチと温度センサとを一
対の光ファイバで接続し、光電スイッチを表示手段に接
続したことを特徴とする。The structure of the present invention for achieving the above object is to provide a contact piece connected to one conductor, connect the other piece to the other conductor, and rotate the base end portion. In a disconnector equipped with a blade that is freely supported and whose tip can be brought into and out of contact with a contact piece, a temperature sensor that shuts off the optical path when the temperature exceeds a set temperature is fixed near the tip of the blade while sending to the temperature sensor. A photoelectric switch consisting of a light emitting part that emits light and a light receiving part that receives the light sent from the temperature sensor is provided, the photoelectric switch and the temperature sensor are connected by a pair of optical fibers, and the photoelectric switch is connected to the display means. It is characterized by having done.
【０００８】[0008]
【作用】ブレードと接触子片とにわたって電気が流れる
と、両者間での接触抵抗によって発熱する。温度が低い
と温度センサ内での光の遮断作用はなく、発光部からの
光は温度センサを介して受光部へ至り、表示手段は作用
しない。温度が上昇すると温度センサ内で光が遮断され
る。このため、発光部からの光が受光部まで届かず、こ
のために表示手段が作用して過熱状態であることが表示
される。When electricity flows between the blade and the contact piece, heat is generated due to the contact resistance between them. When the temperature is low, there is no light blocking function in the temperature sensor, light from the light emitting section reaches the light receiving section through the temperature sensor, and the display means does not work. When the temperature rises, the light is blocked in the temperature sensor. For this reason, the light from the light emitting unit does not reach the light receiving unit, and the display unit is operated for this reason, and it is displayed that the state is overheated.
【０００９】[0009]
【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.
【００１０】本発明による断路器の構成を、図１に示
す。図のように、ベース１の一端に円柱形の固定碍子２
を介して一方の導体を接続するための接続導体片３ａが
取り付けられ、図２に示すように接続導体片３ａには３
対の接触子片４が取り付けられる。接触子片４は以下の
ように構成される。図３に示すように接触子片４の一端
が接続導体片３ａに固着されるとともに他端が開くよう
に曲げられ、中間部に挿通した軸５の両端にバネ受け６
が取り付けられてバネ受け６と接触子片４との間に夫々
バネ７が介装される。The construction of the disconnector according to the invention is shown in FIG. As shown in the figure, a cylindrical fixed insulator 2 is attached to one end of the base 1.
A connecting conductor piece 3a for connecting one of the conductors is attached through the connecting conductor piece 3a, and as shown in FIG.
A pair of contact pieces 4 is attached. The contact piece 4 is configured as follows. As shown in FIG. 3, one end of the contact piece 4 is fixed to the connecting conductor piece 3a and the other end is bent so that the other end is opened.
Are attached, and springs 7 are respectively interposed between the spring receiver 6 and the contact piece 4.
【００１１】ベース１の他端には略円柱形の回転碍子８
が回転自在に設けられ、回転碍子８の先端には回転碍子
８に対する半径方向へ伸びるパイプ状のブレード９の基
端部が結合され、ブレード９を回転碍子８を中心として
回転させることによりブレード９の先端が３対の接触子
片４の間へはいり込むようになっている。そして、ブレ
ード９の基端部には他方の導体を接続するための接続導
体片３ｂが結合されている。回転碍子８は図示しない駆
動手段に連動直結されている。At the other end of the base 1, a substantially cylindrical rotary insulator 8 is provided.
Is rotatably provided, and a base end portion of a pipe-shaped blade 9 extending in a radial direction with respect to the rotary insulator 8 is coupled to a tip end of the rotary insulator 8, and the blade 9 is rotated by rotating the blade 9 around the rotary insulator 8. The tips of the two are inserted into between the three pairs of contact pieces 4. A connecting conductor piece 3b for connecting the other conductor is coupled to the base end of the blade 9. The rotary insulator 8 is directly connected to a driving means (not shown).
【００１２】ブレード９の内部であって先端の近傍に
は、図２，図３に示すように温度センサ１０が固着され
ている。温度センサの構造を図４〜図６に示す。１１は
両端に第一，第二の凹部１２，１３が穿設された円柱状
の感温磁性体であり、この感温磁性体１１は耐腐食性が
あるＭn−Ｚn系のソフトフェライトから構成されてい
る。感温磁性体１１の第一の凹部１２には円柱状の第一
の永久磁石１４が例えば図示の磁極の向きにして嵌め込
まれて接着される。１５は感温磁性体１１の底面に接着
される感温磁性状の底蓋である。A temperature sensor 10 is fixed inside the blade 9 in the vicinity of the tip, as shown in FIGS. The structure of the temperature sensor is shown in FIGS. 11 First across a second cylindrical temperature-sensitive magnetic substance recesses 12, 13 are drilled in, M n -Z n type soft ferrite of the temperature-sensitive magnetic substance 11 have a corrosion resistance It consists of In the first recess 12 of the temperature-sensitive magnetic body 11, a cylindrical first permanent magnet 14 is fitted and adhered, for example, in the direction of the magnetic pole shown. Reference numeral 15 denotes a temperature-sensitive magnetic bottom cover that is adhered to the bottom surface of the temperature-sensitive magnetic body 11.
【００１３】また、感温磁性体１１の第二の凹部１３に
は非磁性材料からなるパイプ１６が嵌合されている。パ
イプ１６の内部には第二の永久磁石１７が遊嵌されてお
り、第二の永久磁石１７の下部の磁極が図示のように、
第一の永久磁石１４の上部の磁極と同磁性となるように
設定されている。第二の永久磁石１７を非磁性材料で囲
ったのは第二の凹部１３内での感温磁性体１１との滑り
よくするためである。これは、永久磁石を感温磁性体に
直接に接触させると残留磁束の影響で滑りが悪くなるの
でこれを防止したものである。ここで、永久磁石として
は耐腐食性の高いフェライト系永久磁石が使用される。
１８は感温磁性体１１の上部端面に接着される非磁性状
の上蓋である。A pipe 16 made of a non-magnetic material is fitted in the second recess 13 of the temperature-sensitive magnetic body 11. A second permanent magnet 17 is loosely fitted inside the pipe 16, and the magnetic pole under the second permanent magnet 17 is as shown in the figure.
It is set to have the same magnetism as the upper magnetic pole of the first permanent magnet 14. The reason why the second permanent magnet 17 is surrounded by the non-magnetic material is to make the temperature-sensitive magnetic body 11 slide well in the second recess 13. This is because when the permanent magnet is brought into direct contact with the temperature-sensitive magnetic body, slippage becomes worse due to the influence of the residual magnetic flux, and this is prevented. Here, a ferrite permanent magnet having high corrosion resistance is used as the permanent magnet.
Reference numeral 18 denotes a non-magnetic upper lid that is adhered to the upper end surface of the temperature-sensitive magnetic body 11.
【００１４】一方、断路器から離れたところには発光部
と受光部とからなる光電スイッチを収容した判定器２１
が設けられ、受光部が警報器２２に接続される。判定器
２１の内部には発光ダイオードが設けられており、光フ
ァイバ１９ｂから届く光の光量を常時調べて規定の光量
以下になると劣化したことを判定するようになってい
る。そして、一端が発光部に接続された光ファイバ１９
ａと一端が受光部に接続された光ファイバ１９ｂとが束
ねられて光ファイバ群１９を構成し、光ファイバ群１９
の他端はブレード９及び回転碍子８内に挿通させたあと
上蓋１８を貫通させてその外周部が上蓋１８に接着され
ている。図５に示すように、光ファイバ１９ａと光ファ
イバ１９ｂとの間には遮光壁１９ｃが設けられている。
２０は反射板で、この反射板２０は第二の影響磁石１７
の上面の反射効率が悪いときに接着するものである。図
４（ｂ）は第二の永久磁石１７の上面と光ファイバ１９
ａ，１９ｂの端面との距離に対する反射光量の特性曲線
図である。On the other hand, a judging device 21 which accommodates a photoelectric switch composed of a light emitting portion and a light receiving portion at a position apart from the disconnector.
Is provided, and the light receiving unit is connected to the alarm device 22. A light emitting diode is provided inside the determination device 21, and the light amount of the light reaching from the optical fiber 19b is constantly checked to determine that the light amount has deteriorated when the light amount is equal to or less than a specified light amount. The optical fiber 19 having one end connected to the light emitting unit
a and an optical fiber 19b whose one end is connected to the light receiving portion are bundled to form an optical fiber group 19, and the optical fiber group 19
The other end is inserted into the blade 9 and the rotary insulator 8 and then penetrated through the upper lid 18, and the outer peripheral portion thereof is adhered to the upper lid 18. As shown in FIG. 5, a light shielding wall 19c is provided between the optical fiber 19a and the optical fiber 19b.
20 is a reflector, which is the second influence magnet 17
It adheres when the reflection efficiency of the upper surface of is poor. FIG. 4B shows the upper surface of the second permanent magnet 17 and the optical fiber 19.
It is a characteristic curve figure of the amount of reflected light with respect to the distance with the end surface of a, 19b.
【００１５】次に、斯かる断路器の作用を説明する。図
３に示す接触子片４とブレード９との間の接触抵抗によ
って発熱すると、その熱はブレード９を介して温度セン
サ１０へ伝わり、感温磁性体１１の温度が上昇する。感
温磁性体１１が動作温度（キュリー温度）以下のときに
は、感温磁性体１１は強磁性体状態となるので第一の永
久磁石１４と第二の永久磁石１７との間に磁気反発力は
生じず、第二の永久磁石１７は図４の位置を維持する。
このため、発光部から光ファイバ１９ａへはいった光は
反射板２０で反射して光ファイバ１９ｂへはいり、受光
部へ届く。そして、受光部へ光が届くので警報器は動作
しない。キュリー温度以上になると感温磁性体１１は常
磁性体状態になるため、第一の永久磁石１４との間の磁
気反発力で第二の永久磁石１７は図４中の上方へ移動
し、反射板２０で反射する光ファイバ１９ａからの光が
光ファイバ１９ｂへ届かなくなる。このため、警報器２
２が警報を発する。Next, the operation of the disconnector will be described. When heat is generated by the contact resistance between the contact piece 4 and the blade 9 shown in FIG. 3, the heat is transmitted to the temperature sensor 10 via the blade 9, and the temperature of the temperature-sensitive magnetic body 11 rises. When the temperature-sensitive magnetic body 11 is lower than the operating temperature (Curie temperature), the temperature-sensitive magnetic body 11 is in a ferromagnetic state, so that the magnetic repulsive force is generated between the first permanent magnet 14 and the second permanent magnet 17. No occurrence occurs and the second permanent magnet 17 maintains the position of FIG.
Therefore, the light that has entered the optical fiber 19a from the light emitting portion is reflected by the reflecting plate 20, enters the optical fiber 19b, and reaches the light receiving portion. Then, since the light reaches the light receiving portion, the alarm device does not operate. When the temperature exceeds the Curie temperature, the temperature-sensitive magnetic body 11 becomes a paramagnetic state, so the magnetic repulsive force between the temperature-sensitive magnetic body 11 and the first permanent magnet 14 causes the second permanent magnet 17 to move upward in FIG. Light from the optical fiber 19a reflected by the plate 20 does not reach the optical fiber 19b. Therefore, the alarm device 2
2 gives an alarm.
【００１６】温度センサ１０はブレード９の中に収容し
ていることから、異常な過熱を感度良く検出できる。そ
して、回転碍子８の中に光ファイバ群１９を挿通してい
ることから、外観上は温度センサのない断路器と同じで
あって、また碍子の外部耐電圧特性に影響を及ばさな
い。Since the temperature sensor 10 is housed in the blade 9, abnormal overheat can be detected with high sensitivity. Since the optical fiber group 19 is inserted into the rotary insulator 8, the external appearance is the same as a disconnector without a temperature sensor, and does not affect the external withstand voltage characteristics of the insulator.
【００１７】なお本実施例では温度センサとして永久磁
石を組み合わせることによって光を遮断する構成のもの
を使用したが、斯かる構成の温度センサに限定するもの
ではない。また、表示手段としては警報器に限定される
ものではない。In the present embodiment, a temperature sensor having a structure in which light is blocked by combining a permanent magnet is used, but the temperature sensor is not limited to such a structure. Further, the display means is not limited to the alarm device.
【００１８】[0018]
【発明の効果】以上の説明からわかるように、本発明に
よる断路器によれば温度センサと光電スイッチを一対の
光ファイバを介して接続し、光電スイッチと表示手段と
を接続したので、断路器の過熱の監視を断路器から離れ
た場所で遠方監視できる。また、光電スイッチとして最
近では汎用センサとして使用されている光ファイバ式光
電スイッチのアンプ部が使用できるので、コスト安とな
る。更に、劣化する部品を用いないので、サーモラベル
のように定期的に交換する必要がなく耐久性がある。As can be seen from the above description, according to the disconnector of the present invention, the temperature sensor and the photoelectric switch are connected via a pair of optical fibers, and the photoelectric switch and the display means are connected. Remote monitoring of overheating can be performed away from the disconnector. Further, since the amplifier section of the optical fiber type photoelectric switch which has recently been used as a general-purpose sensor as the photoelectric switch can be used, the cost is reduced. Further, since no deteriorated parts are used, it does not need to be replaced regularly like a thermo label, and is durable.
【図１】本発明による断路器の実施例を示す斜視図。FIG. 1 is a perspective view showing an embodiment of a disconnector according to the present invention.
【図２】本発明による断路器の要部を示す平面図。FIG. 2 is a plan view showing a main part of a disconnector according to the present invention.
【図３】本発明による断路器の要部を示す正面図。FIG. 3 is a front view showing a main part of the disconnector according to the present invention.
【図４】（ａ）は温度センサの断面図、（ｂ）は第二の
永久磁石の位置と反射板２０による反射光量との関係を
示すグラフ。4A is a cross-sectional view of the temperature sensor, and FIG. 4B is a graph showing the relationship between the position of the second permanent magnet and the amount of light reflected by the reflection plate 20.
【図５】図４（ａ）のＡ矢視図。FIG. 5 is a view on arrow A in FIG.
【図６】温度センサの組み立て図。FIG. 6 is an assembly diagram of a temperature sensor.
４…接触子片 ９…ブレード １０…温度センサ １９…光ファイバ群 １９ａ…光ファイバ １９ｂ…光ファイバ ２１…判定器 ２２…警報器 4 ... Contact piece 9 ... Blade 10 ... Temperature sensor 19 ... Optical fiber group 19a ... Optical fiber 19b ... Optical fiber 21 ... Judgment device 22 ... Alarm device
Claims (1)
け、他方の導体に接続されるとともに基端部が回動自在
に支持されかつ先端部が接触子片に接離自在なブレード
を設けた断路器において、 設定温度以上になると光路を遮断する温度センサをブレ
ードの先端近傍に固定する一方、温度センサへ送るため
の光を発する発光部と温度センサから送られてきた光を
受光する受光部とからなる光電スイッチを設け、光電ス
イッチと温度センサとを一対の光ファイバで接続し、光
電スイッチを表示手段に接続したことを特徴とする断路
器。1. A blade which is provided with a contact piece connected to one conductor and which is connected to the other conductor and whose base end is rotatably supported and whose tip is in contact with and separated from the contact piece. In the disconnector provided, the temperature sensor that shuts off the optical path when the temperature exceeds the set temperature is fixed near the tip of the blade, while the light emitting part that emits light for sending to the temperature sensor and the light sent from the temperature sensor are received. A disconnector which is provided with a photoelectric switch composed of a light receiving section, the photoelectric switch and a temperature sensor are connected by a pair of optical fibers, and the photoelectric switch is connected to a display means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26285193A JPH07122160A (en) | 1993-10-21 | 1993-10-21 | Disconnector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26285193A JPH07122160A (en) | 1993-10-21 | 1993-10-21 | Disconnector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07122160A true JPH07122160A (en) | 1995-05-12 |
Family
ID=17381510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26285193A Pending JPH07122160A (en) | 1993-10-21 | 1993-10-21 | Disconnector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07122160A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465196A (en) * | 2014-12-03 | 2015-03-25 | 国网河南省电力公司鹤壁供电公司 | Disconnecting switch shunting bridge |
| CN105161337A (en) * | 2015-08-31 | 2015-12-16 | 国网河南省电力公司南阳供电公司 | Heating emergency processing device and method for handheld part of GW4/GW7 isolation switch |
| CN106531528A (en) * | 2016-11-25 | 2017-03-22 | 河南众联云科工程技术有限公司 | Record disconnecting switch for number of times of closing and opening |
| CN107546061A (en) * | 2016-09-27 | 2018-01-05 | 河南众联云科工程技术有限公司 | A kind of disconnecting switch safety monitoring method |
| CN108461345A (en) * | 2018-04-26 | 2018-08-28 | 广东电网有限责任公司 | Disconnecting link state monitoring apparatus and chopper switch |
| CN109559929A (en) * | 2018-11-23 | 2019-04-02 | 国网山东省电力公司日照供电公司 | A kind of disconnecting link state collecting device |
-
1993
- 1993-10-21 JP JP26285193A patent/JPH07122160A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465196A (en) * | 2014-12-03 | 2015-03-25 | 国网河南省电力公司鹤壁供电公司 | Disconnecting switch shunting bridge |
| CN105161337A (en) * | 2015-08-31 | 2015-12-16 | 国网河南省电力公司南阳供电公司 | Heating emergency processing device and method for handheld part of GW4/GW7 isolation switch |
| CN107546061A (en) * | 2016-09-27 | 2018-01-05 | 河南众联云科工程技术有限公司 | A kind of disconnecting switch safety monitoring method |
| CN106531528A (en) * | 2016-11-25 | 2017-03-22 | 河南众联云科工程技术有限公司 | Record disconnecting switch for number of times of closing and opening |
| CN106531528B (en) * | 2016-11-25 | 2020-04-14 | 河南众联云科工程技术有限公司 | Isolating switch with function of recording opening and closing times |
| CN108461345A (en) * | 2018-04-26 | 2018-08-28 | 广东电网有限责任公司 | Disconnecting link state monitoring apparatus and chopper switch |
| CN109559929A (en) * | 2018-11-23 | 2019-04-02 | 国网山东省电力公司日照供电公司 | A kind of disconnecting link state collecting device |
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