WO2022208691A1 - リード線 - Google Patents

リード線 Download PDF

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Publication number
WO2022208691A1
WO2022208691A1 PCT/JP2021/013673 JP2021013673W WO2022208691A1 WO 2022208691 A1 WO2022208691 A1 WO 2022208691A1 JP 2021013673 W JP2021013673 W JP 2021013673W WO 2022208691 A1 WO2022208691 A1 WO 2022208691A1
Authority
WO
WIPO (PCT)
Prior art keywords
lead wire
flexible member
conductor
lead
insulating paper
Prior art date
Application number
PCT/JP2021/013673
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
啓介 鈴木
隆彦 石倉
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2021/013673 priority Critical patent/WO2022208691A1/ja
Priority to JP2021550262A priority patent/JP7284282B2/ja
Publication of WO2022208691A1 publication Critical patent/WO2022208691A1/ja

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables

Definitions

  • This disclosure relates to lead wires.
  • a lead wire is described in Japanese Utility Model Laid-Open No. 59-3507 (Patent Document 1).
  • the lead wire described in Patent Document 1 has a plurality of copper wires and insulating paper. Each of the plurality of copper strands extends along the extending direction of the lead wire. An insulating paper is wound around the plurality of copper strands. As a result, the plurality of copper strands are bundled and the insulation of the plurality of copper strands is ensured.
  • the present disclosure is made in view of the problems of the prior art as described above. More specifically, the present disclosure provides a lead wire capable of suppressing deterioration in dielectric strength when bending is applied.
  • the lead wire of the present disclosure bundles the plurality of conductor strands by covering the plurality of conductor strands extending along the extension direction of the lead wire and the plurality of conductor strands by covering the periphery of the plurality of conductor strands. It comprises a flexible member and insulating paper surrounding the flexible member.
  • the lead wire of the present disclosure it is possible to suppress a decrease in dielectric strength when bending is applied.
  • FIG. 1 is a perspective view of a lead wire 100;
  • FIG. 2 is a perspective view of the lead wire 100 with insulation paper 30 omitted.
  • FIG. 2 is a cross-sectional view of lead wire 100.
  • FIG. 3 is a partially enlarged view of FIG. 2;
  • FIG. It is a perspective view of lead wire 200A.
  • It is a sectional view of lead wire 200A.
  • FIG. 4 is a cross-sectional view of the lead wire 200A when bending is applied;
  • FIG. 10 is a perspective view of a lead wire 200B; It is a sectional view of lead wire 200B.
  • 3 is a cross-sectional view of lead wire 300.
  • FIG. 4 is a cross-sectional view of lead wire 400.
  • FIG. 3 is a perspective view of a lead wire 500 with insulating paper 30 omitted.
  • FIG. 5 is a cross-sectional view of lead wire 500.
  • FIG. 3 is a perspective view of a lead wire 500
  • Embodiment 1 A lead wire according to Embodiment 1 (hereinafter, the lead wire according to Embodiment 1 is referred to as “lead wire 100”) will be described.
  • FIG. 1 is a perspective view of the lead wire 100.
  • FIG. FIG. 2 is a perspective view of the lead wire 100 with the insulating paper 30 omitted.
  • FIG. 3 is a cross-sectional view of the lead wire 100. As shown in FIG. FIG. 3 shows a cross section of the lead wire 100 orthogonal to the extending direction of the lead wire 100.
  • FIG. 4 is a partially enlarged view of FIG. 2; As shown in FIGS. 1 to 4, lead wire 100 includes a plurality of conductor wires 10, flexible member 20, and insulating paper 30.
  • FIG. 1 is a perspective view of the lead wire 100.
  • FIG. FIG. 2 is a perspective view of the lead wire 100 with the insulating paper 30 omitted.
  • FIG. 3 is a cross-sectional view of the lead wire 100. As shown in FIG. FIG. 3 shows a cross section of the lead wire 100 orthogonal to the extending direction of the lead wire 100.
  • FIG. 4 is a partially enlarged view of FIG. 2
  • the lead wire 100 is used, for example, to connect coils of an oil-filled transformer or to connect a coil of an oil-filled transformer and a bushing. That is, the lead wire 100 is used while being impregnated with oil.
  • the conductor wire 10 extends along the extending direction of the lead wire 100 .
  • the conductor wire 10 has, for example, a circular shape in a cross-sectional view perpendicular to the extending direction of the lead wire 100 .
  • the conductor wire 10 is made of a conductive material.
  • a conductive material is, for example, a metal material.
  • a specific example of the metal material forming the conductor wire 10 is copper or a copper alloy.
  • the flexible member 20 is a member made of a flexible (elastic) material.
  • the flexible member 20 is arranged around the plurality of conductor strands 10 . Thereby, the plurality of conductor strands 10 are bundled by the flexible member 20 .
  • the flexible member 20 is a sheet-like member. More specifically, the flexible member 20 is strip-shaped with a length greater than its width.
  • the flexible member 20 is wound around the plurality of conductor wires 10, for example. More specifically, the flexible member 20 is wound such that the winding position of the flexible member 20 shifts along the extending direction of the lead wire 100 for each turn. From another point of view, the flexible member 20 is spirally wound around the plurality of conductor strands 10 .
  • a portion of the flexible member 20 is called a first portion 21 .
  • Another portion of the flexible member 20 is referred to as a second portion 22 .
  • the first portion 21 and the second portion 22 are adjacent to each other in the extending direction of the lead wire 100 while the flexible member 20 is wound around the plurality of conductor wires 10 .
  • the flexible member 20 is preferably wound around the plurality of conductor wires 10 so that there is a space between the first portion 21 and the second portion 22 in the extending direction of the lead wire 100 .
  • the flexible member 20 is wound around the plurality of conductor strands 10 so that the first portion 21 and the second portion 22 do not overlap each other in the extending direction of the lead wire 100. It is preferable that However, the flexible member 20 may be wound around the plurality of conductor wires 10 so that the first portion 21 and the second portion 22 partially overlap each other in the extending direction of the lead wire 100 .
  • the flexible member 20 is made of rubber, for example. However, the material forming the flexible member 20 is not limited to this.
  • the insulating paper 30 covers the periphery of the flexible member 20 . More specifically, the insulating paper 30 is strip-shaped, and is wound around the flexible member 20 so that the position where the insulating paper 30 is wound is shifted along the extending direction of the lead wire 100 for each turn. It is The insulating paper 30 is, for example, crepe paper. The insulating paper 30 may be kraft paper. By covering the periphery of the flexible member 20 with the insulating paper 30, insulation for the plurality of conductor wires 10 is ensured.
  • FIG. 5 is a perspective view of the lead wire 200A.
  • FIG. 6 is a cross-sectional view of lead wire 200A.
  • FIG. 6 shows a cross section of the lead wire 200A orthogonal to the extending direction of the lead wire 200A.
  • the lead wire 200A has a plurality of conductor wires 10 and insulating paper 30.
  • Insulating paper 30 is wound around a plurality of conductor wires 10 in lead wire 200A. That is, in the lead wire 200 ⁇ /b>A, the plurality of conductor wires 10 are bundled by the insulating paper 30 wound around the plurality of conductor wires 10 .
  • FIG. 7 is a cross-sectional view of the lead wire 200A when bending is applied.
  • the binding force for the plurality of conductor wires 10 is low. Therefore, as shown in FIG. 7, in the lead wire 200A, a part of the plurality of conductor strands 10 protrudes from the rest of the plurality of conductor strands 10 when bending is applied. Since an electric field is concentrated on the projecting portion, the dielectric strength of the lead wire 200A is lowered when the lead wire 200A is bent.
  • FIG. 8 is a perspective view of the lead wire 200B.
  • FIG. 9 is a cross-sectional view of lead wire 200B.
  • FIG. 9 shows a cross section of the lead wire 200B orthogonal to the extending direction of the lead wire 200B.
  • the lead wire 200B has a plurality of conductor wires 10, insulating paper 30, and insulating paper 40.
  • a plurality of conductor wires 10 are bundled by winding insulating paper 40 around the plurality of conductor wires 10 .
  • a high tension is applied to the insulating paper 40 when it is wound around the plurality of conductor strands 10 .
  • the insulating paper 40 is covered with the insulating paper 30 .
  • the insulating paper 40 is wound around the plurality of conductor wires 10 with high tension, so the binding force for the plurality of conductor wires 10 is high. Therefore, in the lead wire 200B, it is difficult for some of the plurality of conductor strands 10 to protrude from the remaining portions of the plurality of conductor strands 10 when bending is applied. However, in the lead wire 200B, the insulating paper 40 is wound around the plurality of conductor wires 10 with high tension, so that the insulating paper 40 is likely to break when bending is applied. When the insulating paper 40 breaks, the dielectric strength of the lead wire 200B is lowered.
  • the dielectric strength of both the lead wire 200A and the lead wire 200B is lowered when bending is applied.
  • the binding force for the plurality of conductor wires 10 is high. Therefore, in the lead wire 100, it is difficult for a part of the plurality of conductor strands 10 to protrude from the rest of the plurality of conductor strands 10 when bending is applied. In addition, when the lead wire 100 is bent, the flexible member 20 is deformable so as to follow the bending of the lead wire 100, so the flexible member 20 is less likely to break. Therefore, according to the lead wire 100, compared with the lead wire 200A and the lead wire 200B, it is possible to suppress a decrease in dielectric strength when bending is applied.
  • the oil is It easily permeates to the periphery of the conductor wire 10 through the gap between the first portion 21 and the second portion 22 .
  • the conductor strands 10 are easily cooled, and the diameter of the conductor strands 10 is increased and the number of the plurality of conductor strands 10 is increased in order to reduce the electrical resistance value and the heat generation amount. It is no longer necessary to
  • Embodiment 2 A lead wire according to Embodiment 2 (hereinafter, the lead wire according to Embodiment 2 is referred to as “lead wire 300”) will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
  • FIG. 10 is a cross-sectional view of the lead wire 300.
  • FIG. FIG. 10 shows a cross section of lead wire 300 perpendicular to the extending direction of lead wire 300 .
  • lead wire 300 has a plurality of conductor wires 10 , flexible member 20 and insulating paper 30 .
  • the flexible member 20 is wound around the plurality of conductor strands 10 .
  • the configuration of lead wire 300 is common to the configuration of lead wire 100 .
  • the flexible member 20 is mesh-like. That is, in the lead wire 300 , the flexible member 20 is formed with a plurality of through holes 23 passing through the flexible member 20 along the thickness direction. In this regard, the configuration of lead 300 differs from that of lead 100 .
  • the flexible member 20 has a mesh shape (through holes 23 are formed in the flexible member 20). Therefore, in the lead wire 300 , oil easily permeates to the periphery of the conductor wire 10 through the through hole 23 . As a result, in the lead wire 300, the conductor strand 10 is easily cooled, and in order to reduce the electrical resistance value and the heat generation amount, the diameter of the conductor strand 10 is increased and the number of the plurality of conductor strands 10 is increased. It is no longer necessary to
  • Embodiment 3 A lead wire according to Embodiment 3 (hereinafter, the lead wire according to Embodiment 3 is referred to as “lead wire 400”) will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
  • FIG. 11 is a cross-sectional view of the lead wire 400.
  • FIG. FIG. 11 shows a cross section of lead wire 400 perpendicular to the extending direction of lead wire 400 .
  • lead wire 400 has a plurality of conductor wires 10 , flexible member 20 and insulating paper 30 .
  • the flexible member 20 is wound around the plurality of conductor strands 10 .
  • the configuration of lead wire 400 is common to the configuration of lead wire 100 .
  • the lead wire 400 further has a plurality of conductive particles 50.
  • a plurality of conductive particles 50 are disposed within the flexible member 20 .
  • the conductive particles 50 are, for example, powder or filler made of metal material. In these respects, the configuration of lead 400 differs from that of lead 100 .
  • the lead wire 400 since the conductive particles 50 are arranged inside the flexible member 20 , the flexible member 20 covering the plurality of conductor wires 10 is imparted with conductivity. As a result, according to the lead wire 400 , the plurality of conductor wires 10 and the flexible member 20 are electrically connected, so that the electric field on the surface of the conductor wires 10 can be alleviated.
  • Embodiment 4 A lead wire according to Embodiment 4 (hereinafter, the lead wire according to Embodiment 4 is referred to as "lead wire 500") will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
  • FIG. 12 is a perspective view of the lead wire 500 with the insulating paper 30 omitted. In FIG. 12, illustration of the through hole 23 is omitted.
  • FIG. 13 is a cross-sectional view of lead wire 500 .
  • FIG. 13 shows a cross section of lead wire 500 perpendicular to the extending direction of lead wire 500 .
  • the lead wire 500 has a plurality of conductor wires 10, flexible members 20, and insulating paper 30.
  • the flexible member 20 surrounds the plurality of conductor strands 10 .
  • the configuration of lead 500 is common to the configuration of lead 100 .
  • the flexible member 20 is a tubular member extending along the extending direction of the lead wire 500 .
  • the plurality of conductor strands 10 are bundled by being arranged inside the flexible member 20 .
  • the flexible member 20 is formed with a plurality of through holes 23 passing through the flexible member 20 along the thickness direction. In these respects, the configuration of lead 500 differs from that of lead 100 .
  • the binding force for the plurality of conductor wires 10 is high.
  • the flexible member 20 is deformable so as to follow the bending of the lead wire 500, so the flexible member 20 is unlikely to break. Therefore, according to the lead wire 500, similarly to the lead wire 100, it is possible to suppress a decrease in dielectric strength when bending is applied.

Landscapes

  • Insulated Conductors (AREA)
  • Coils Of Transformers For General Uses (AREA)
PCT/JP2021/013673 2021-03-30 2021-03-30 リード線 WO2022208691A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2021/013673 WO2022208691A1 (ja) 2021-03-30 2021-03-30 リード線
JP2021550262A JP7284282B2 (ja) 2021-03-30 2021-03-30 リード線

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/013673 WO2022208691A1 (ja) 2021-03-30 2021-03-30 リード線

Publications (1)

Publication Number Publication Date
WO2022208691A1 true WO2022208691A1 (ja) 2022-10-06

Family

ID=83458407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/013673 WO2022208691A1 (ja) 2021-03-30 2021-03-30 リード線

Country Status (2)

Country Link
JP (1) JP7284282B2 (enrdf_load_stackoverflow)
WO (1) WO2022208691A1 (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123905Y1 (enrdf_load_stackoverflow) * 1974-03-27 1976-06-18
JPS5819423U (ja) * 1981-07-31 1983-02-05 日本電信電話株式会社 耐クリ−プ同軸ケ−ブル
JPS58173115U (ja) * 1982-05-14 1983-11-19 古河電気工業株式会社 転位電線
JP2010108843A (ja) * 2008-10-31 2010-05-13 Hitachi Cable Ltd 絶縁被覆電線

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126778Y2 (enrdf_load_stackoverflow) * 1971-04-21 1976-07-07
JPS5542308U (enrdf_load_stackoverflow) * 1978-09-11 1980-03-18
JPS61142603A (ja) * 1984-12-15 1986-06-30 株式会社フジクラ 電気絶縁油及びそれを用いた電力ケ−ブル
JPH0565017U (ja) * 1992-02-06 1993-08-27 昭和電線電纜株式会社 水冷ケーブルの導体引入治具
JP6901946B2 (ja) * 2017-09-25 2021-07-14 矢崎総業株式会社 電線の止水接続構造および電線の止水接続方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123905Y1 (enrdf_load_stackoverflow) * 1974-03-27 1976-06-18
JPS5819423U (ja) * 1981-07-31 1983-02-05 日本電信電話株式会社 耐クリ−プ同軸ケ−ブル
JPS58173115U (ja) * 1982-05-14 1983-11-19 古河電気工業株式会社 転位電線
JP2010108843A (ja) * 2008-10-31 2010-05-13 Hitachi Cable Ltd 絶縁被覆電線

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JPWO2022208691A1 (enrdf_load_stackoverflow) 2022-10-06
JP7284282B2 (ja) 2023-05-30

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