JP2009143458A - Conductive wire having insulating portion at prescribed portion on outer periphery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conductive wire having an insulating portion at a prescribed portion on an outer periphery capable of reducing wiring accidents by simplifying the arrangement of the conductive wires such as trolley wires and top aerial wires in a dead section, etc. <P>SOLUTION: This conductive wire having the insulating portion at the prescribed portion on the outer periphery is provided with a core member 1 formed of fibers of an insulator, a conductor 2 formed on an outer periphery of the core member 1 and an insulating member 3 formed in place of the conductor 2 at the prescribed portion of the conductor 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a conductive wire such as a trolley wire or a feeder wire including a feeder type.

  Conventionally, a high-speed sorting device such as a trolley wire or a overhead wire is configured as follows.

  A structure in which overhead lines are electrically divided to allow a pantograph to pass through is called a sorting device (section: dead section or air section). In the AC electrification section, the voltage phase is different for each substation, so a section is also required on the main line at the substation boundary.

  FIG. 7 is a schematic diagram showing such a conventional dead section.

  In this figure, 101 is a trolley wire, 102 is an FRP insulator (2 m × 4), 103 is a suspension wire, 104 is a connecting rod, 105 is a suspension, and 106 is a connecting fitting.

  The insulating main body of the FRP insulator 102 is a GFRP cloth wound around and pressed into a rectangular cross section, and is used by connecting four 2 m long pieces.

  Thus, since the phase differs for each substation in the AC electrification section, it is necessary to provide an insulation section (dead section) or the like in order to prevent a phase short circuit at the boundary. As shown in FIG. 7, the conventional line mainly uses an FRP insulator, but the current collection performance is inferior because the mass of rigidity and unit length is larger than that of a normal trolley line. Therefore, when the vehicle passes through this section at a high speed, an impact force is generated, and the pantograph and the overhead line are easily damaged.

On the other hand, the inventor of the present application has developed a conductive wire having a small overall thermal expansion coefficient as a conductive wire such as a trolley wire or a hinge wire (see Patent Documents 1 and 2 below).
JP 2006-85914 A JP 2007-118670 A

  As described above, in the conventional dead section, the FRP insulator is used, but the current collection performance is low. When the vehicle passes through this section, an impact force is generated, and the pantograph and the overhead wire are likely to be damaged. .

  In addition, since the configuration of the dead section is complicated, simplification is desired.

  In view of the above situation, the present invention simplifies and simplifies conductive wires such as trolley wires and overhead wires in dead sections and the like, and has a conductive portion having an insulating portion at a predetermined position on the outer periphery that can reduce overhead wire accidents. The purpose is to provide a line.

In order to achieve the above object, the present invention provides
[1] In a conductive wire having an insulating portion at a predetermined position on the outer periphery, a core member made of an insulating fiber, a conductor formed on the outer periphery of the core member, and a conductor at a predetermined position of the conductor. And an insulating member formed instead.

  [2] The conductive wire having an insulating portion at a predetermined location on the outer periphery according to [1], wherein the predetermined portion of the conductor formed on the outer periphery is an end portion of the conductive wire.

  [3] The conductive wire having an insulating portion at a predetermined position on the outer periphery according to the above [1], wherein the predetermined portion of the conductor formed on the outer periphery is a constant section in the middle of the conductive wire.

  [4] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to [1], [2] or [3], the core member is made of xylon or dyneema.

  [5] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to [1], [2] or [3], the conductor is made of copper or aluminum.

  [6] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to the above [1], [2] or [3], the insulating member is formed by applying an insulating resin around the core member and It consists of a FRP member having the same outer diameter as the body.

  [7] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to [1], [2] or [3], the insulating member is infiltrated with an insulating resin in the core member and expanded. It consists of a FRP member having the same outer diameter as the conductor.

  [8] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to the above [1], [2] or [3], the insulating member is electrically conductive with a glass cloth and an insulating resin around the core member. It consists of a FRP member having the same outer diameter as the body.

  [9] In the conductive wire having an insulating part at a predetermined position on the outer periphery according to [1], [2] or [3], the insulating member is made by impregnating a glass cloth with an insulating resin around the core member. The prepreg sheet is wound and cured.

  [10] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to [1], [2] or [3], the insulating member is made by impregnating a glass cloth with an insulating resin around the core member. The prepreg sheet is wound and cured after installation.

  [11] In the conductive wire having an insulating portion at a predetermined position on the outer periphery according to any one of [6] to [10], the insulating resin is an epoxy resin.

  According to the present invention, the following effects can be achieved.

  (1) It is possible to simplify and simplify the arrangement of conductive wires such as trolley wires and overhead wires in dead sections and reduce overhead wire accidents.

  (2) Since the core member is responsible for the tension of the trolley wire and the overhead wire, there is no connection and a uniform tension can be applied. Since there is no connection, it is advantageous in terms of structure and maintenance.

  (3) When a xylon or dyneema with low thermal expansion characteristics is used as the core member, since it is a low thermal expansion conductive wire, expansion of the conductive wire due to external temperature can be suppressed, and the trolley wire and the bridge wire can be relaxed. When the degree is reduced and a plurality of electric wires are arranged in parallel, a short circuit accident of those electric wires can be prevented.

  The conductive wire having an insulating portion at a predetermined position on the outer periphery of the present invention includes a core member made of an insulating fiber, a conductor formed on the outer periphery of the core member, and a conductor at a predetermined position of the conductor. And an insulating member formed instead.

  Hereinafter, embodiments of the present invention will be described in detail.

  1 is a perspective view of a conductive wire having an insulating portion at a predetermined location on the outer periphery according to a first embodiment of the present invention, FIG. 2 is a sectional view of the conductive wire, and FIG. 3 is an enlarged sectional view of FIG. 3 (a) is an enlarged cross-sectional view taken along line AA in FIG. 1, FIG. 3 (b) is an enlarged cross-sectional view taken along line BB in FIG. 1, and FIG. It is a figure which shows an apparatus.

  In these drawings, 1 is a core member made of “Zyron” which is a PBO fiber (insulator fiber) and “Dyneema” which is an ultrahigh molecular weight polyethylene fiber (insulator fiber), and 2 is an outer periphery of the core member 1. Conductor made of copper or aluminum, 3 is formed on the outer periphery of the end 4 of the conductive wire, is an insulating member in place of the conductor 2, 5 is a tensioning device, 6 is a utility pole, 7 is a retaining band, 8 Is an insulator, and 9 is a retaining member to which the insulating member 3 is connected.

As the insulating member 3,
(1) An FRP member having the same outer diameter as that of the conductor 2 by applying an insulating resin such as an epoxy resin around the core member 1 can be used.

  (2) An FRP member having the same outer diameter as that of the conductor 2 can be used by infiltrating the core member 1 with an insulating resin, for example, an epoxy resin, and expanding it.

  (3) An FRP member having the same outer diameter as the conductor using a glass cloth and an insulating resin, for example, an epoxy resin, around the core member 1 can be used.

  (4) Around the core member 1, for example, a glass cloth impregnated with a glass cloth and a prepreg sheet wound around and cured can be used.

  (5) A glass cloth impregnated with an insulating resin around the core member, wound with a prepreg sheet, and cured after installation can be used.

  As described above, the outer periphery of the end portion 4 of the composite conductive wire is configured to be insulated by the insulating member 3. Therefore, since the end portion 4 of the combined conductive wire can be easily insulated, it can be supported on the fixing portion (not shown) with a simple fixing tool. As in the prior art, for supporting the trolley wire, the end portion 4 of the composite conductive wire is simply supported by the drawing device 5 shown in FIG. 4 without using a connecting metal fitting, a connecting rod, or a suspension. Can do.

  In particular, in the air section between the different substations of the air section where two trolley wires supplied with power from different substations at the boundary of the substation of the electric railway are connected in parallel, Of the trolley wires, only one side can be energized with the pantograph, and the other can be insulated. With such a configuration, it is possible to prevent an accident in which two trolley wires having different voltages short-circuit the pantograph and cause breakage of the trolley wire due to overcurrent.

  Moreover, since this conductive wire is a low thermal expansion conductive wire, expansion of the conductive wire due to external temperature can be suppressed.

  Therefore, when it is used for a trolley wire or an overhead wire, it becomes easy to attach to the fixed part, and the sag of the trolley wire or the overhead wire is reduced, and when a plurality of electric wires are arranged in parallel, A short circuit accident of those electric wires can be prevented.

  5 is a perspective view of a conductive wire having an insulating portion at a predetermined position on the outer periphery according to a second embodiment of the present invention, FIG. 6 is a cross-sectional view of the conductive wire, and FIG. 7 is an enlarged cross-sectional view of FIG. 7 (a) is an enlarged sectional view taken along the line CC of FIG. 5, and FIG. 7 (b) is an enlarged sectional view taken along the line DD of FIG. In addition, the same thing as shown in FIG. 4 can be used for a drawing apparatus.

  In these drawings, 11 is a core member made of “Zyron” which is PBO fiber (insulator fiber) and “Dyneema” which is ultrahigh molecular weight polyethylene fiber (insulator fiber), and 12 is an outer periphery of the core member 11. A conductor 13 made of copper or aluminum is formed on the outer periphery of the intermediate portion 14 of the conductive wire, and is an insulating member that replaces the conductor 12.

  Moreover, as the insulating member 13, the thing similar to what was shown in the 1st Example can be used.

  Thus, the outer periphery of the intermediate portion 14 of the composite conductive wire is configured to be insulated by the insulating member 13. Therefore, since the intermediate portion 14 of the composite conductive wire can be easily insulated, a dead section can be formed in the middle of the conductive wire. Moreover, the configuration of the dead section is simple and can be simplified. As in the prior art, for supporting the trolley wire, it can be easily attached to the fixed portion without using a connecting metal fitting, a connecting rod, or a suspension.

  Similarly to the first embodiment, when it is used for a trolley wire or an overhead wire, it can be easily attached to the fixing portion, and the sag of the trolley wire or the overhead wire is reduced, and a plurality of electric wires are parallel. Can be prevented from being short-circuited.

  Further, it is not necessary to connect an insulating member in the middle, and since it is supported by a single core member, high tension can be maintained, accidents such as cutting can be reduced, and high reliability can be obtained.

  Therefore, when a conductive wire having an insulating portion at a predetermined position on the outer periphery of the present invention is used as a trolley wire, the current collecting performance in such an insulating section is improved, and the railway vehicle can be operated at high speed without causing damage to the pantograph and the overhead wire. Can pass through.

  In addition, high strength and non-conductive fibers are arranged as a core member, and conductive material and insulating material are arranged around it to form an integral structure, so the tension is handled by the core fiber, and the conventional trolley wire As with, it can be laid with appropriate tension applied. Further, when the conductive wire as in the second embodiment described above is used as a trolley wire, the feeding section of the substation can be obtained with a normal trolley wire structure using one trolley wire without arranging the two wires in parallel. Can be separated.

  In the above-described embodiment, the core member is xylon or dyneema, which is a low thermal expansion material. However, the present invention is not limited to this, and an insulating material such as an organic insulating material, high strength super fiber (Kevlar, Aramid, technola, etc.) may be used.

  Moreover, according to this invention, it can apply also to the feeder overhead line which flows electricity also as a feeder especially.

  In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  The conductive wire having an insulating portion at a predetermined position on the outer periphery of the present invention can simplify and simplify the arrangement of the trolley wire in the dead section, and can prevent a power supply accident by suppressing the slackness. Can be used as

It is a perspective view of the conductive wire which has an insulation part in the predetermined location of the outer periphery which shows 1st Example of this invention. It is sectional drawing of the electrically conductive wire which has an insulation part in the predetermined | prescribed location of the outer periphery which shows 1st Example of this invention. It is an expanded sectional view of FIG. It is a figure which shows the drawing apparatus of the electrically conductive wire which has an insulation part in the predetermined location of the outer periphery of this invention. It is a perspective view of the conductive wire which has an insulation part in the predetermined location of the outer periphery which shows 2nd Example of this invention. It is sectional drawing of the conductive wire which has an insulation part in the predetermined | prescribed location of the outer periphery which shows 2nd Example of this invention. It is an expanded sectional view of FIG. It is a schematic diagram which shows the conventional dead section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Core member 2,12 Conductor formed in outer periphery of core member 3 Insulation member instead of conductor formed in outer periphery of end portion of core member 4 End portion of conductive wire 13 Intermediate portion of core member Insulating member that replaces the conductor formed on the outer periphery 14 Middle part of the conductive wire

Claims (11)

(A) a core member made of an insulating fiber;
(B) a conductor formed on the outer periphery of the core member;
(C) A conductive wire having an insulating portion at a predetermined position on the outer periphery, comprising an insulating member formed in place of the conductor at a predetermined position of the conductor.   The conductive wire having an insulating portion at a predetermined portion of the outer periphery according to claim 1, wherein the predetermined portion of the conductor formed on the outer periphery is an end portion of the conductive wire, and the insulating portion is provided at the predetermined portion of the outer periphery. Conductive wire with.   The conductive wire having an insulating part at a predetermined location on the outer periphery according to claim 1, wherein the predetermined location of the conductor formed on the outer periphery is a predetermined section in the middle of the conductive wire. Conductive wire with an insulating part.   The conductive wire having an insulating portion at a predetermined position on the outer periphery according to claim 1, 2, or 3, wherein the core member is made of xylon or dyneema.   4. The conductive wire having an insulating portion at a predetermined location on the outer periphery according to claim 1, 2, or 3, wherein the conductor is made of copper or aluminum.   4. The conductive wire having an insulating portion at a predetermined location on the outer periphery according to claim 1, 2, or 3, wherein the insulating member has an outer diameter equal to that of the conductor by applying an insulating resin around the core member. A conductive wire having an insulating portion at a predetermined location on the outer periphery, characterized by comprising a member.   The conductive wire having an insulating portion at a predetermined position on the outer periphery according to claim 1, 2, or 3, wherein the insulating member is infiltrated with an insulating resin into the core member to expand to have the same outer diameter as the conductor. A conductive wire having an insulating portion at a predetermined position on the outer periphery, which is made of an FRP member.   4. The conductive wire having an insulating portion at a predetermined position on the outer periphery according to claim 1, 2 or 3, wherein the insulating member has the same outer diameter as the conductor using a glass cloth and an insulating resin around the core member. A conductive wire having an insulating portion at a predetermined location on the outer periphery, which is made of an FRP member that has been manufactured.   4. The conductive wire having an insulating portion at a predetermined location on the outer periphery according to claim 1, 2, or 3, wherein the insulating member is made by impregnating a glass cloth with an insulating resin around the core member and winding and curing the prepreg sheet. A conductive wire having an insulating portion at a predetermined location on the outer periphery, wherein   The conductive wire having an insulating portion at a predetermined location on the outer periphery according to claim 1, 2, or 3, wherein the insulating member is impregnated with a glass cloth around the core member and wound with a prepreg sheet after installation. A conductive wire having an insulating portion at a predetermined position on the outer periphery, which is cured.   The conductive wire having an insulating portion at a predetermined portion of the outer periphery according to any one of claims 6 to 10, wherein the insulating resin is an epoxy resin, and the conductive wire having an insulating portion at a predetermined portion of the outer periphery. .

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