JPH0736326U

JPH0736326U - 2-layer see-through cable with linear color band

Info

Publication number: JPH0736326U
Application number: JP7188693U
Authority: JP
Inventors: 通隆安東; 信隆安東; 献一後藤
Original assignee: Nishi Nippon Electric Wire and Cable Co Ltd
Current assignee: Nishi Nippon Electric Wire and Cable Co Ltd
Priority date: 1993-12-10
Filing date: 1993-12-10
Publication date: 1995-07-04

Abstract

(57)【要約】【目的】シ−スを色違いの２層構造にし、ケ−ブルシ−
スの磨耗による損傷を目視で容易に検出できるようにす
る。【構成】遮蔽層を有する電力ケ−ブルにおいて、遮蔽層
の上に、黒色以外の有色シ−スを一部が、その上に許容
磨耗限界厚さに施す黒色シ−スの直線状色帯になるよう
に施す。なお、有色シ−スと黒色シ−スの２層を同時に
押出し一体化している。 (57) [Abstract] [Purpose] The sheath has a two-layer structure with different colors, and the cable sheath
Make it easy to visually detect damage due to abrasion. [Structure] In a power cable having a shielding layer, a part of a colored sheet other than black is provided on the shielding layer, and a linear color band of a black sheet is applied on the shielding layer to an allowable wear limit thickness. So that It should be noted that two layers of a colored sheet and a black sheet are simultaneously extruded and integrated.

Description

[Detailed description of the device]

【０００１】[0001]

[Industrial applications]

この考案は、無停電工事の際に、例えば６ＫＶ架空絶縁配電線路等から、活線下で、バイパス回路に電力を送るリ−ド線として使用される比較的長尺な電力ケ−ブルに係るもので、詳しくはケ−ブルシ−スに生じた磨耗や亀裂等の損傷を目視で容易に検出できるように考案したケ−ブルシ−スの構造に関するものである。 The present invention relates to a relatively long power cable used as a lead wire for sending power to a bypass circuit under a live line from, for example, a 6KV overhead insulated distribution line during uninterruptible construction. Specifically, it relates to the structure of a cable case devised so that damages such as wear and cracks generated in the cable case can be easily detected visually.

【０００２】[0002]

[Prior art]

従来、この種ケ−ブルは、可撓導体の上に架橋ポリエチレンやエチレンプロピレン等の絶縁体が施され、その上に銅編組遮蔽層が施され、その上にビニルやゴム等から成る単色、通常は黒色のシ−スが施されていた。無停電工事は、その性格上、可及的に工事時間を短縮し、迅速に工事を終了するよう要求され、工事中におけるケ−ブルの取扱いも比較的にラフで、ケ−ブルシ−スの磨耗がひどく、普通、半年毎にシ−ス損傷等の検査を行なっていた。検査は、リ−ルに巻かれたケ−ブルを空のリ−ルに巻き戻しながら、熟練した検査員が目視で、損傷箇所を検出するというやり方で行なわれていた。しかし、シ−スの色が単色、普通は黒であったので、傷があっても、見る角度が不適正であると、シ−スの色に吸い込まれ、見落としてしまうという欠点や、傷の深さが定量的に決めにくいという欠点があった。 Conventionally, this type of cable has a flexible conductor covered with an insulating material such as cross-linked polyethylene or ethylene propylene, a copper braided shielding layer formed on top of it, and a single color made of vinyl or rubber. Usually, a black sheath was applied. Due to its nature, uninterruptible construction is required to shorten the construction time as much as possible and to finish the construction promptly, and the handling of the cables during the construction is relatively rough, and the cable sheath It was worn out badly, and normally, inspections were made every six months for damage to the sheath. The inspection was performed by a trained inspector visually detecting the damaged area while rewinding the cable wound on the reel into an empty reel. However, the color of the sheath was a single color, usually black, so even if there are scratches, if the viewing angle is incorrect, it will be sucked into the color of the sheath and will be overlooked. There was a drawback that it was difficult to quantitatively determine the depth of the scratch.

【０００３】[0003]

[Problems to be solved by the device]

この考案は、従来の技術で述べた欠点を解決するためになされたもので、シ −スの損傷及び程度が、目視で容易に精度よく検出できる電力ケ−ブルの提供を目的とするものである。 This invention has been made to solve the drawbacks described in the prior art, and its purpose is to provide an electric power cable in which the damage and the degree of the sheath can be detected easily and accurately by visual inspection. is there.

【０００４】[0004]

[Means for Solving the Problems]

遮蔽層を有する高圧ケ−ブルにおいて、遮蔽層の上に、黒色以外の有色シ− スを一部が、その上に許容磨耗限界厚さに施す黒色シ−スの直線状の色帯になるように施すのである。 In a high-voltage cable with a shielding layer, a part of a colored sheet other than black is formed on the shielding layer to form a linear color band of a black sheet on which the allowable wear limit thickness is applied. It is done like this.

【０００５】[0005]

[Action]

最外層の黒色シ−スの厚さは、シ−スの許容磨耗限界値で、この黒色シ−スが磨耗し、下層の有色シ−スが露出すると、このケ−ブルは使用できない状態になり、シ−スの修理が必要であることが一義的に分かる。有色シ−スの露出箇所は、目視によって容易に検出できるので、損傷箇所を見逃すことはない。。また、直線状の色帯は黒色シ−スが使用限界まで磨耗しても消えることがないので、現場において、作業者が色別を見誤って、誤接続する等のトラブルを防止できる。 The thickness of the black outermost layer is the allowable wear limit of the sheet.If this black sheet wears out and the colored layer of the lower layer is exposed, this cable becomes unusable. It is obvious that the case needs to be repaired. The exposed area of the colored sheet can be easily detected visually, so you will not miss the damaged area. . In addition, since the linear color band does not disappear even when the black sheath wears to the limit of use, it is possible to prevent troubles such as an operator mistakenly distinguishing the colors and making an incorrect connection in the field.

【０００６】[0006]

【Example】

この考案の実施の一例を示す図面について説明するに、遮蔽層を有する高圧ケ−ブルにおいて、遮蔽層１の上に、黒色以外の、例えば赤、白、黄等の有色シ −ス２を一部が、その上に許容磨耗限界厚さに施す黒色シ−ス３の直線状の色帯４になるように施こす。黒色シ−ス３の厚さは、シ−スの許容磨耗限界値で、この厚さに、有色シ−ス２の厚さを加算した値が略規格値になる。直線状の色帯４を含む有色シ−ス２と黒色シ−ス３の二層は、同時に押出され一体化している。有色シ−ス２は磨耗に対する危険マ−カ−の役目を果たしている。 Referring to the drawings showing an example of the embodiment of the present invention, in a high-voltage cable having a shielding layer, a colored sheet 2 other than black, such as red, white, or yellow, is provided on the shielding layer 1. The part is applied so as to form a linear color band 4 of a black sheath 3 on which the allowable wear limit thickness is applied. The thickness of the black sheet 3 is the allowable wear limit value of the sheet, and the value obtained by adding the thickness of the colored sheet 2 to this value is a substantially standard value. The two layers of the colored sheet 2 and the black sheet 3 including the linear color band 4 are simultaneously extruded and integrated. The colored sheath 2 serves as a dangerous marker against wear.

【０００７】なお、有色シ−ス２と黒色シ−ス３の材質は同じで、ビニルやエチレンプロピレンゴム等が使用される。黒色シ−ス３は、配合されたカ−ボンブラックが紫外線を吸収するので、耐候性に優れ、また、直線状の色帯４は、ケ−ブルを識別する役目を果たし、現場での誤接続等を防止する。直線状の色帯４は、黒色シ −スが使用限界まで磨耗しても消滅しない。The colored sheet 2 and the black sheet 3 are made of the same material, and vinyl, ethylene propylene rubber or the like is used. The black sheath 3 has excellent weather resistance because the blended carbon black absorbs ultraviolet rays, and the linear color band 4 plays a role of distinguishing the cable, so Prevent incorrect connection. The linear color band 4 does not disappear even when the black sheath wears to the limit of use.

【０００８】[0008]

【effect】

この考案は上述のように構成されているので、次のような効果を呈する。 Since the present invention is configured as described above, it has the following effects.

【０００９】目視で、シ−ス損傷箇所を、容易に精度よく検出でき、しかも良否の判定が一義的にできるので、検査する人によるばらつきがない。[0009] Since it is possible to easily and accurately detect the damaged portion of the sheath by visual inspection, and further, it is possible to unequivocally determine the quality, so that there is no variation among persons inspecting.

【００１０】直線状の色帯は、黒色シ−スが使用限界まで磨耗しても消滅しない。The linear color band does not disappear even when the black sheath is worn to the limit of use.

【００１１】ケ−ブルは耐候性に優れている。The cable has excellent weather resistance.

【００１２】シ−ス磨耗限界で、シ−ス損傷箇所を検出できるので、損傷が絶縁体まで波及するおそれがなく、絶縁体破壊等の重大な事故を未然に防止できる。等の効果を有し、その工業的利用価値は高い。Since the damage point of the sheath can be detected by the wear limit of the sheath, there is no possibility that the damage spreads to the insulator, and a serious accident such as destruction of the insulator can be prevented in advance. And so on, and its industrial utility value is high.

[Brief description of drawings]

【図１】考案の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the invention.

[Explanation of symbols]

１遮蔽層２黒色以外の有色シ−ス半導電性テ−プ巻層３黒色シ−ス４直線状の色帯５絶縁体６導体 1 Shielding Layer 2 Colored Case Other than Black Semi-Conductive Tape Winding Layer 3 Black Case 4 Linear Color Band 5 Insulator 6 Conductor

Claims

[Scope of utility model registration request]

1. A high-voltage cable having a shielding layer, in which a part of a colored sheet (2) other than black is applied on the shielding layer (1) so as to have an allowable abrasion limit thickness. Seeds (3)
A two-layer sheath with a linear color band characterized by being applied so as to have a linear color band (4).