JPH0235241B2 - - Google Patents
Info
- Publication number
- JPH0235241B2 JPH0235241B2 JP54131898A JP13189879A JPH0235241B2 JP H0235241 B2 JPH0235241 B2 JP H0235241B2 JP 54131898 A JP54131898 A JP 54131898A JP 13189879 A JP13189879 A JP 13189879A JP H0235241 B2 JPH0235241 B2 JP H0235241B2
- Authority
- JP
- Japan
- Prior art keywords
- steel core
- stranded wire
- steel
- magnetic sensor
- aluminum stranded
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 56
- 239000010959 steel Substances 0.000 claims description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005389 magnetism Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
【発明の詳細な説明】
本発明は、鋼芯アルミニウム撚線の撚線接続部
内の鋼芯接続部の位置を検出する方法及び装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for detecting the position of a steel core connection within a stranded connection of a steel core aluminum strand.
鋼芯アルミニウム撚線の接続部は鋼芯を鋼スリ
ーブによつて圧縮接続して形成された鋼芯接続部
とアルミニウム撚線をアルミニウムスリーブによ
つて圧縮接続して形成された撚線接続部とから成
つている。この接続部の構成上、鋼芯接続部を形
成した後この鋼芯接続部を覆うようにして撚線接
続部が形成される。この場合、鋼芯接続部が撚線
接続部の中央にないと、所定の強度を得ることが
できないで断線事故、電流容量の低下等の事故が
発生するので鋼芯接続部の位置を正確に検出する
ことが要求される。 The steel core aluminum stranded wire connection part is formed by compression connection of the steel core with a steel sleeve, and the stranded wire connection part formed by compression connection of the aluminum stranded wire with an aluminum sleeve. It consists of Due to the structure of this connection part, after forming the steel core connection part, the stranded wire connection part is formed to cover the steel core connection part. In this case, if the steel core connection part is not in the center of the stranded wire connection part, it will not be possible to obtain the required strength and accidents such as wire breakage and reduction in current capacity will occur, so please be sure to position the steel core connection part accurately. detection is required.
従来技術では撚線接続部のアルミニウムスリー
ブを挾むように磁針計と永久磁石を配置し磁針計
がアルミニウムスリーブに対し水平になるように
設定してこの磁針計と永久磁石とをアルミニウム
スリーブに沿つて移動していた。この従来方法で
は、鋼芯と鋼スリーブとでは磁性容量が異なるの
で鋼スリーブの端で磁気的変化が表われ、従つ
て、磁針計の移動方向を反転することによつて磁
針計で鋼スリーブ、即ち鋼芯接続部の位置が検出
される。しかし、この従来技術では、磁針計をア
ルミニウムスリーブに水平に設定しなければなら
ない上に装置が大型で重いので架空送電線上での
作業性が悪く、また鋼スリーブの両端を検出する
場合磁針計を反転させなければならないので１回
の測定時間が長くなる欠点があつた。 In the conventional technology, a magnetic needle meter and a permanent magnet are arranged so as to sandwich the aluminum sleeve of the twisted wire connection part, the magnetic needle meter is set to be parallel to the aluminum sleeve, and the magnetic needle meter and permanent magnet are moved along the aluminum sleeve. Was. In this conventional method, the steel core and the steel sleeve have different magnetic capacitances, so a magnetic change appears at the end of the steel sleeve. That is, the position of the steel core connection is detected. However, with this conventional technology, the magnetic needle meter must be set horizontally on the aluminum sleeve, and the device is large and heavy, making it difficult to work on overhead power lines.Also, when detecting both ends of the steel sleeve, the magnetic needle meter is not used. Since it has to be reversed, it has the disadvantage that it takes a long time for one measurement.
本発明の目的は、装置を小型軽量化し、且つ高
感度で作業性のよい鋼芯アルミニウム撚線の鋼芯
接続部検出方法及び装置を提供することにある。 An object of the present invention is to provide a method and device for detecting a steel core connection portion of a steel core aluminum stranded wire, which is small in size and lightweight, and has high sensitivity and good workability.
本発明の実施例を図面を参照して詳細にのべる
と、第１図及び第２図は本発明の方法を実施する
装置を系統的に示す。鋼芯アルミニウム撚線１の
接続部８は鋼芯２，２を鋼スリーブ３で圧縮接続
して形成された鋼芯接続部４とアルミニウム撚線
５，５をアルミニウムスリーブ６で圧縮接続して
形成された撚線接続部７とから成つている。本発
明の装置１０は、撚線接続部７に沿つて移動すべ
き磁気センサー１２、例えばホール素子と、鋼芯
２の残留磁気よりも磁気が大きく磁気センサー１
２に密着させて残留磁気を無視するようにしたバ
イアス用永久磁石１４とを含む検出部１６を備え
ている。このように検出部１６が磁気センサー１
２と永久磁石１４とから成つていると、この検出
部が第１図の実線で示すように撚線接続部７上に
あると、永久磁石１４によつて鋼芯２の微少残留
磁気からの影響をなくし、且つ検出部１６の移動
方向（矢印方向）の距離感度が向上する。第１図
において撚線接続部７の外径と鋼芯２の外径との
間の寸法をｌとし、撚線接続部７の外径と鋼芯接
続部４の外径との間の寸法をl′とすると、撚線接
続部７の外面から磁性体である鋼芯２と鋼スリー
ブ３までの距離の差△ｌはｌ−l′であり、磁気セ
ンサー１２はこの△ｌを磁気的に検出する。 Embodiments of the invention will be described in detail with reference to the drawings, in which FIGS. 1 and 2 systematically show an apparatus for carrying out the method of the invention. The connection part 8 of the steel core aluminum stranded wire 1 is formed by compression connection of the steel core connection part 4 and the aluminum stranded wires 5, 5, which are formed by compression connection of the steel cores 2, 2 with a steel sleeve 3, with an aluminum sleeve 6. It consists of a stranded wire connection section 7. The device 10 of the invention comprises a magnetic sensor 12, for example a Hall element, to be moved along the stranded wire connection 7 and a magnetic sensor 12, for example a Hall element, whose magnetism is greater than the residual magnetism of the steel core 2.
The detection unit 16 includes a bias permanent magnet 14 that is brought into close contact with the magnet 2 to ignore residual magnetism. In this way, the detection unit 16 is connected to the magnetic sensor 1.
2 and a permanent magnet 14, and when this detection part is located on the stranded wire connection part 7 as shown by the solid line in FIG. This eliminates the influence and improves the distance sensitivity in the moving direction (arrow direction) of the detection unit 16. In FIG. 1, the dimension between the outer diameter of the stranded wire connection part 7 and the outer diameter of the steel core 2 is 1, and the dimension between the outer diameter of the stranded wire connection part 7 and the outer diameter of the steel core connection part 4 is 1. is l', then the difference △l in the distance from the outer surface of the stranded wire connection part 7 to the magnetic steel core 2 and steel sleeve 3 is l-l', and the magnetic sensor 12 magnetically detects this △l. to be detected.
本発明の装置１０は、更に、磁気センサー１２
に接続された磁気−電気変換器１８とこの磁気−
電気変換器１８に接続された指示計２０とこの指
示計を零調整する零調整器２２とを含む測定部２
４を備えている。尚、符号２６は磁気センサー１
２と変換器１８との電源、２８は零調整器２２の
電源である。また、変換器１８と指示計２０との
間には感度調整器３０が設けられている。磁気−
電気変換器１８は、例えば、磁気−直流電圧変換
回路であり、指示計２０は電流計であり、また零
調整器２２及び感度調整器３０は可変抵抗器から
成つている。零調整器２２は検出部１６が撚線接
続部７の鋼芯接続部４がないところにある時指示
計２０が零を指示するように調整される。 The device 10 of the invention further includes a magnetic sensor 12.
A magnetic-to-electrical converter 18 connected to
Measuring section 2 including an indicator 20 connected to an electric converter 18 and a zero adjuster 22 for adjusting the indicator to zero
It is equipped with 4. In addition, the code 26 is the magnetic sensor 1
2 is a power supply for the converter 18, and 28 is a power supply for the zero regulator 22. Further, a sensitivity adjuster 30 is provided between the converter 18 and the indicator 20. Magnetism
The electric converter 18 is, for example, a magnetic-DC voltage conversion circuit, the indicator 20 is an ammeter, and the zero regulator 22 and sensitivity regulator 30 are comprised of variable resistors. The zero adjuster 22 is adjusted so that the indicator 20 indicates zero when the detection part 16 is located at a position where the steel core connection part 4 of the twisted wire connection part 7 is not present.
次に、上記装置によつて本発明の方法を実施す
る状態をのべると、検出部１６を第１図の実線で
示すように撚線接続部７の端部に位置させ零調整
器２２によつて指示計２０の指示を零に調整す
る。この状態で検出部１６を第１図の矢印方向に
移動すると、指示計２０は鋼芯接続部４、即ち鋼
スリーブ３の端部で距離△ｌを磁気的に検出し、
変換器１８によつて直流電圧に変換され、指示計
２０は０〜100％の範囲で急激に変化する。そし
て、指示計２０の振れが50％を越える点が鋼スリ
ーブ３の端部とすると、±５mm以内の精度でこの
鋼スリーブの端部を検出することができる。指示
計２０の振れは鋼スリーブ３の中心では100％振
れるので検出部１６の一方向の移動で鋼スリーブ
３の両端と中心とが検出される。距離△ｌは鋼芯
アルミニウム撚線の寸法によつて異なるが、この
距離△ｌによる変換器１８の出力は撚線の寸法毎
に予め知ることができるので指示計２０の感度を
感度調整器３０を調整することによつて種々の寸
法の撚線に適用することができる。 Next, the state in which the method of the present invention is carried out using the above-mentioned apparatus is described. The detection section 16 is positioned at the end of the twisted wire connection section 7 as shown by the solid line in FIG. Then adjust the indicator 20 to zero. When the detection part 16 is moved in the direction of the arrow in FIG. 1 in this state, the indicator 20 magnetically detects the distance Δl at the steel core connection part 4, that is, the end of the steel sleeve 3.
It is converted into a DC voltage by the converter 18, and the indicator 20 changes rapidly in the range of 0 to 100%. If the end of the steel sleeve 3 is the point where the deflection of the indicator 20 exceeds 50%, the end of the steel sleeve can be detected with an accuracy of within ±5 mm. Since the deflection of the indicator 20 is 100% at the center of the steel sleeve 3, both ends and the center of the steel sleeve 3 can be detected by moving the detection section 16 in one direction. The distance Δl varies depending on the dimensions of the steel-core aluminum stranded wire, but since the output of the converter 18 based on this distance Δl can be known in advance for each stranded wire dimension, the sensitivity of the indicator 20 can be adjusted using the sensitivity adjuster 30. It can be applied to strands of various sizes by adjusting.
第３図は種々の寸法の撚線について△ｌによる
変換器１８の出力電圧Ｖを示す。撚線の寸法ｄは
断面積（mm2）で示してある。この図から断面積
1520mm2の撚線で約100ｍｖ、断面積160mm2の撚線で
約850ｍｖの出力が得られる。 FIG. 3 shows the output voltage V of the converter 18 as a function of Δl for stranded wires of various dimensions. The dimensions d of the strands are given in cross-sectional area (mm 2 ). From this figure, the cross-sectional area
A stranded wire of 1520 mm 2 produces an output of approximately 100 mv, and a stranded wire of 160 mm 2 cross-sectional area produces an output of approximately 850 mv.
本発明によれば、上記のように、磁気センサー
とバイアス用永久磁石とから成る検出部を撚線接
続部上を移動するだけでよいので小型軽量で片手
で作業ができるから作業性が良く、また指示計の
感度を調整するのみで種々の寸法の撚線について
測定することができ、更に指示計を零調整して検
出するので精度よく確実に鋼芯接続部の位置を検
出することができる。また、バイアス用永久磁石
は鋼芯接続部の残留磁気より大きな磁気を有する
ので、鋼芯接続部の残留磁気に影響されることな
く鋼心接続部の位置を精度よく、しかも簡単に検
出し得る。 According to the present invention, as described above, the detection section consisting of the magnetic sensor and the permanent magnet for bias only needs to be moved over the twisted wire connection section, so it is small and lightweight and can be operated with one hand, resulting in good workability. In addition, stranded wires of various sizes can be measured by simply adjusting the sensitivity of the indicator, and since the indicator is zero-adjusted for detection, the position of the steel core connection can be detected accurately and reliably. . In addition, since the bias permanent magnet has a magnetism greater than the residual magnetism of the steel core connection, it is possible to accurately and easily detect the position of the steel core connection without being affected by the residual magnetism of the steel core connection. .
第１図は本発明の方法を実施する状態を示す概
略図、第２図は本発明の装置の概略系統図、第３
図は撚線寸法と出力電圧との関係を示す線図であ
る。
１……鋼芯アルミニウム撚線、２……鋼芯、３
……鋼スリーブ、４……鋼芯接続部、６……アル
ミニウムスリーブ、７……撚線接続部、１０……
検出装置、１２……磁気センサー、１４……バイ
アス用永久磁石、１６……検出部、１８……磁気
−電気変換器、２０……指示計、２２……零調整
器。
FIG. 1 is a schematic diagram showing the state in which the method of the present invention is carried out, FIG. 2 is a schematic system diagram of the apparatus of the present invention, and FIG.
The figure is a diagram showing the relationship between twisted wire dimensions and output voltage. 1... Steel core aluminum stranded wire, 2... Steel core, 3
... Steel sleeve, 4 ... Steel core connection part, 6 ... Aluminum sleeve, 7 ... Twisted wire connection part, 10 ...
Detection device, 12...Magnetic sensor, 14...Permanent magnet for bias, 16...Detection unit, 18...Magnetic-electrical converter, 20...Indicator, 22...Zero adjuster.
Claims (1)
気よりも大きな磁気を有するバイアス用永久磁石
を磁気センサーに密着させて前記鋼芯アルミニウ
ム撚線の撚線接続部に沿つて移動させ、前記鋼芯
アルミニウム撚線の撚線接続部の端では前記磁気
センサーに磁気−電気変換器を介して接続された
指示計を零調整し、前記磁気センサーの移動で前
記磁気センサーが前記鋼芯アルミニウム撚線の鋼
芯接続部で感応することによつて生じる前記指示
計の振れから前記鋼芯アルミニウム撚線の撚線接
続部内の鋼芯接続部の位置を検出することを特徴
とする鋼芯アルミニウム撚線の鋼芯接続部検出方
法。 ２ 鋼芯アルミニウム撚線の撚線接続部に沿つて
移動すべき磁気センサーと前記鋼芯アルミニウム
撚線の鋼芯の残留磁気よりも磁気が大きく前記磁
気センサーに密着させて前記残留磁気を無視する
ようにしたバイアス用永久磁石とを含む検出部
と、前記検出部の磁気センサーに接続された磁気
−電気変換器と該磁気−電気変換器に接続された
指示計と該指示計の指示を零調整する零調整器と
を含む測定部とから成る鋼芯アルミニウム撚線の
鋼芯接続部検出装置。 ３ 前記磁気−電気変換器は磁気−直流電圧変換
回路である特許請求の範囲第２項に記載の鋼芯ア
ルミニウム撚線の鋼芯接続部検出装置。 ４ 前記零調整器は、可変抵抗器である特許請求
の範囲第２項又は第３項に記載の鋼芯アルミニウ
ム撚線の鋼芯接続部検出装置。[Scope of Claims] 1. A bias permanent magnet having magnetism larger than the residual magnetism of the steel core connection portion of the steel core aluminum stranded wire is brought into close contact with the magnetic sensor, and is placed along the strand connection portion of the steel core aluminum stranded wire. and zero-adjust an indicator connected to the magnetic sensor via a magneto-electrical converter at the end of the stranded wire connection of the steel-core aluminum stranded wire, and the movement of the magnetic sensor causes the magnetic sensor to The position of the steel core connection part in the stranded wire connection part of the steel core aluminum stranded wire is detected from the deflection of the indicator caused by sensing at the steel core connection part of the steel core aluminum stranded wire. A method for detecting steel core connections in steel core aluminum stranded wires. 2. A magnetic sensor to be moved along the stranded wire connection portion of the steel-core aluminum stranded wire and a magnetic sensor whose magnetism is larger than the residual magnetism of the steel core of the steel-core aluminum stranded wire, and which are brought into close contact with the magnetic sensor to ignore the residual magnetism. a detecting section including a permanent magnet for bias, a magneto-electrical converter connected to a magnetic sensor of the detecting section, an indicator connected to the magneto-electrical converter, and a zero indication of the indicator; A steel core connection detection device for a steel core aluminum stranded wire, comprising a zero adjuster for adjustment and a measuring section including a measuring section. 3. The device for detecting a steel core connection portion of a steel core aluminum stranded wire according to claim 2, wherein the magneto-electrical converter is a magneto-DC voltage conversion circuit. 4. The steel core connection portion detection device for steel core aluminum stranded wire according to claim 2 or 3, wherein the zero adjuster is a variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13189879A JPS5655801A (en) | 1979-10-15 | 1979-10-15 | Method and device for detecting joint of steel wire core of aluminum cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13189879A JPS5655801A (en) | 1979-10-15 | 1979-10-15 | Method and device for detecting joint of steel wire core of aluminum cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5655801A JPS5655801A (en) | 1981-05-16 |
| JPH0235241B2 true JPH0235241B2 (en) | 1990-08-09 |
Family
ID=15068732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13189879A Granted JPS5655801A (en) | 1979-10-15 | 1979-10-15 | Method and device for detecting joint of steel wire core of aluminum cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5655801A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58142203A (en) * | 1982-02-19 | 1983-08-24 | Res Dev Corp Of Japan | Magnetic body detecting device |
| JPS6319504A (en) * | 1986-07-11 | 1988-01-27 | Mitsubishi Nuclear Fuel Co Ltd | Plenum length measuring instrument for nuclear fuel rod |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4856450A (en) * | 1971-11-16 | 1973-08-08 | ||
| JPS5223684A (en) * | 1975-08-15 | 1977-02-22 | Kaihatsu Denki Kk | Detector for inspection of wiring joint and sleeve |
-
1979
- 1979-10-15 JP JP13189879A patent/JPS5655801A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4856450A (en) * | 1971-11-16 | 1973-08-08 | ||
| JPS5223684A (en) * | 1975-08-15 | 1977-02-22 | Kaihatsu Denki Kk | Detector for inspection of wiring joint and sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5655801A (en) | 1981-05-16 |
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