JP2017010668A - Method for manufacturing polymer insulation tube, and polymer insulation tube - Google Patents

Method for manufacturing polymer insulation tube, and polymer insulation tube Download PDF

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JP2017010668A
JP2017010668A JP2015122589A JP2015122589A JP2017010668A JP 2017010668 A JP2017010668 A JP 2017010668A JP 2015122589 A JP2015122589 A JP 2015122589A JP 2015122589 A JP2015122589 A JP 2015122589A JP 2017010668 A JP2017010668 A JP 2017010668A
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polymer
soot tube
insulation tube
soot
main body
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貴久 田渕
Takahisa Tabuchi
貴久 田渕
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Viscas Corp
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Abstract

PROBLEM TO BE SOLVED: To provide, in a polymer insulation tube with deteriorated insulation property due to the outside environment, a method for manufacturing a polymer insulation tube in which the sheath can easily be replaced as well as the good insulation characteristics can be maintained.SOLUTION: The method for manufacturing a polymer insulation tube 1 in which the surface of an insulation tube main body 11 is covered with a sheathing member 12 made of macromolecule, includes: a step of preparing a macromolecule-made cylindrical body having an inner diameter not larger than the outer diameter R11 of the insulation tube main body 1, as the sheathing member 12; a step of expanding the inner diameter of said prepared sheathing member 12 to an inner diameter R12 not smaller than the outer diameter of the insulation tube main body; a step of inserting the diameter-expanded sheathing member 12 into the insulation tube main body 11; and a step of diameter-shrinking said inserted sheathing member 12 to mount it to the surface of the insulation tube main body 11.SELECTED DRAWING: Figure 2

Description

本発明は、電力ケーブルの気中終端接続箱などに用いられるポリマー碍管を製造するポリマー碍管の製造方法、及びポリマー碍管に関する。   TECHNICAL FIELD The present invention relates to a method for producing a polymer pipe for producing a polymer pipe used for an air terminal junction box of a power cable, and the like.

電力ケーブルなどの気中終端接続箱には、磁器製の碍管以外に、高分子製の外被を有するポリマー碍管が用いられている。ポリマー碍管は、例えば強化プラスチック（ＦＲＰ）の芯（碍管本体）の外周を、高分子製の外被（例えばゴム製外被）で覆った二重構造となっている。上記構成のポリマー碍管を製造する工程としては、ゴム材をモールド成型または注型成型して、成型したゴム製外被を熱収縮して、ゴム製外被を碍管本体に装着する手法が従来から用いられている。   In addition to porcelain soot pipes, polymer soot pipes having a polymer jacket are used in air end connection boxes such as power cables. The polymer soot tube has, for example, a double structure in which the outer periphery of the core (the soot tube body) of reinforced plastic (FRP) is covered with a polymer sheath (for example, a rubber sheath). As a process for producing the polymer pipe having the above-described structure, there has conventionally been a method in which a rubber material is molded or cast-molded, the molded rubber outer shell is thermally contracted, and the rubber outer jacket is attached to the main pipe body. It is used.

ポリマー碍管は、磁器碍管と比較して、軽量、耐内圧性、耐汚損性などの有利点をもつが、磁器碍管にはない問題がある。つまり、ポリマー碍管は、高分子製の外被が鳥類に啄まれて損傷して電気特性（絶縁特性）が低下するといった問題がある。また、短期的に金属粉や鳥の糞など、重度の汚損により絶縁特性が低下してしまう、といった問題もある。   The polymer soot tube has advantages such as light weight, internal pressure resistance, and fouling resistance as compared with the porcelain soot tube, but there are problems that the porcelain soot tube does not have. That is, the polymer rod has a problem that the polymer outer sheath is bitten and damaged by birds and the electrical characteristics (insulation characteristics) are deteriorated. In addition, there is a problem that insulation characteristics deteriorate due to severe fouling such as metal powder and bird droppings in the short term.

これらの問題に対して、たとえば、特許文献１には、鳥害対策として、碍管端部に、鳥類が外被を啄むこと防止する突起部を設けたことが記載されている。また、特許文献２には、碍管本体とその周囲に装着される外側カバーとの二重構造からなる碍管について、カバーが損傷ないし汚損された場合に、碍管本体に対してカバーを回転して除去し、新たなカバーに交換する手法が記載されている。   With respect to these problems, for example, Patent Document 1 describes that, as a measure against bird damage, a protrusion that prevents birds from biting the jacket is provided at the end of the tub tube. Further, Patent Document 2 discloses that a double pipe structure consisting of a double pipe body and an outer cover attached to the periphery of the double pipe body is removed by rotating the cover with respect to the double pipe body when the cover is damaged or soiled. A method of replacing the cover with a new one is described.

特開２０１２−２２１８２３号公報JP 2012-221823 A 特開２０００−２４３１６２号公報JP 2000-243162 A

しかしながら、上記特許文献１に記載された碍管では、碍管全体のサイズが大きいと、突起部を避けて鳥類が啄んでしまう虞がある。   However, in the tub tube described in Patent Document 1, if the size of the entire tub tube is large, there is a risk that birds will crawl avoiding the protrusions.

また、外被の絶縁特性は、そのヒダ形状によって高圧部から接地部までの表面漏洩距離を確保することで実現される。特許文献２に記載の碍管では、外被に相当するカバーを回転させることで交換できるようにするため、カバーが螺旋形状となっているが、上述した外被の絶縁特性に鑑みると、次のような問題点がある。   Further, the insulation characteristic of the outer cover is realized by ensuring the surface leakage distance from the high-pressure part to the grounding part by its fold shape. In the soot tube described in Patent Document 2, the cover has a spiral shape so that it can be exchanged by rotating the cover corresponding to the outer cover. There are some problems.

つまり、独立したリング形状の外被と比較すると、特許文献２に記載されたような、カバーが螺旋形状の外被では、螺旋形状の最短距離を伝わることから、フラッシュオーバーが発生し易い、という問題がある。ここで、フラッシュオーバーとは、気体中で高圧ないし接地間に放電路が形成されることであって、碍管においては外被の絶縁性能が低下して放電してしまうことをいう。また、特許文献２に記載された碍管において、フラッシュオーバーを防止するために螺旋形状の表面漏洩距離を大きくすると、碍管本体を必要以上に大きな径のものに変更しなければならない、という問題がある。さらに、特許文献２に記載された碍管では、外被を樽型形状などの複雑な形状にすることができないため、カバーが啄まれると碍管本体まで容易に貫通して、碍管本体の外傷が発生しカバーを交換しても絶縁特性を維持できない、という問題がある。   In other words, compared to an independent ring-shaped jacket, the cover having a spiral shape as described in Patent Document 2 is transmitted through the shortest distance of the spiral shape, so that flashover is likely to occur. There's a problem. Here, the flashover means that a discharge path is formed between high pressure or ground in the gas, and in the soot tube, the insulation performance of the jacket is lowered and discharge occurs. Further, in the soot tube described in Patent Document 2, there is a problem that if the surface leakage distance of the spiral shape is increased in order to prevent flashover, the soot tube body must be changed to a diameter larger than necessary. . Furthermore, in the soot tube described in Patent Document 2, since the outer cover cannot be formed into a complicated shape such as a barrel shape, when the cover is rubbed, it easily penetrates to the soot tube body, and the soot tube body is not damaged. There is a problem that the insulation characteristics cannot be maintained even if the cover is replaced.

本発明の目的は、上述した課題に鑑みてなされたものであり、外部環境に起因して絶縁特性が低下したポリマー碍管において、外被を容易に交換でき、かつ良好な絶縁特性を維持可能なポリマー碍管の製造方法、及びポリマー碍管を提供することを目的とする。   The object of the present invention has been made in view of the above-mentioned problems, and in a polymer soot tube whose insulation characteristics have been lowered due to the external environment, the jacket can be easily replaced and good insulation characteristics can be maintained. It is an object of the present invention to provide a method for producing a polymer soot tube and a polymer soot tube.

本発明に係るポリマー碍管の製造方法は、碍管本体の表面が、高分子製の外被材に覆われたポリマー碍管の製造方法において、内径が前記碍管本体の外径以下である高分子製筒体を、前記外被材として準備するステップと、前記準備した外被材の内径を、前記碍管本体の外径以上に拡径するステップと、前記拡径した外被材を前記碍管本体に挿入するステップと、前記挿入した前記外被材を縮径して前記碍管本体の表面に装着するステップと、を有することを特徴とする。   The method for producing a polymer pipe according to the present invention is a method for producing a polymer pipe in which the surface of the pipe body is covered with a polymer jacket material, the inner diameter of which is equal to or less than the outer diameter of the pipe body. Preparing a body as the jacket material, expanding the inner diameter of the prepared jacket material to be greater than or equal to the outer diameter of the soot tube body, and inserting the expanded sheath material into the soot tube body And a step of reducing the diameter of the inserted jacket material and mounting it on the surface of the soot tube main body.

本発明によれば、外被材を拡径した状態で碍管本体に挿入して装着することから、樽型形状などの複雑な形状であっても、碍管本体と外被材とを隙間無く容易に装着することができる。また、本発明によれば、例えば、所定間隔をあけて笠部が形成された外被など、独立したリング形状を有する外被を用いることができることから、外被表面を螺旋形状とした場合などに比べて、良好な絶縁特性を実現することができる。   According to the present invention, since the jacket material is inserted into the pipe main body with the diameter expanded, the pipe main body and the jacket material can be easily connected to each other even in a complicated shape such as a barrel shape. Can be attached to. In addition, according to the present invention, for example, a jacket having an independent ring shape, such as a jacket having a cap portion formed at a predetermined interval, can be used. Compared to the above, it is possible to achieve better insulation characteristics.

つまり、本発明によれば、鳥害などの外部環境に起因して絶縁特性が低下したポリマー碍管において、外被を容易に交換でき、かつ当該外被の交換により良好な絶縁特性を維持可能なポリマー碍管を製造することができる。   In other words, according to the present invention, in a polymer soot tube whose insulation characteristics have deteriorated due to an external environment such as bird damage, the jacket can be easily replaced, and good insulation characteristics can be maintained by replacing the jacket. A polymer soot can be manufactured.

本発明の好ましい態様に係るポリマー碍管の製造方法は、前記外被材を装着した碍管本体について、前記外被材との隙間を、粘ちょう性絶縁体でシールするステップを、さらに有することを特徴とする。   The method for producing a polymer pipe according to a preferred embodiment of the present invention further comprises a step of sealing a gap between the cover material with the cover material with a viscous insulator with respect to the pipe body mounted with the cover material. And

本態様によれば、碍管本体と外被材との隙間を、粘ちょう性絶縁体でシールすることにより、当該隙間からの水の浸入を防止し、経年劣化をより十全に防ぐことができる。   According to this aspect, by sealing the gap between the tub tube main body and the jacket material with a viscous insulator, water can be prevented from entering through the gap, and deterioration over time can be more fully prevented. .

また、本発明は、上記ポリマー碍管の製造方法により製造されるポリマー碍管としても捉えることが可能である。   Moreover, this invention can also be grasped | ascertained as a polymer soot pipe manufactured by the manufacturing method of the said polymer soot pipe.

本発明によれば、外部環境に起因して絶縁特性が低下したポリマー碍管において、外被を容易に交換でき、かつ良好な絶縁特性を維持可能なポリマー碍管を製造することができる。   ADVANTAGE OF THE INVENTION According to this invention, the polymer pipe | tube which can replace | exchange a jacket easily and can maintain a favorable insulation characteristic can be manufactured in the polymer pipe | tube pipe | tube with which the insulation characteristic fell due to the external environment.

ポリマー碍管を断面視した図である。It is the figure which looked at the polymer soot pipe in cross section. 本実施形態に係るポリマー碍管の製造方法について説明するための図である。It is a figure for demonstrating the manufacturing method of the polymer soot pipe concerning this embodiment. ポリマー碍管における外被材を交換する工程について説明するための図である。It is a figure for demonstrating the process of replacing | exchanging the jacket material in a polymer soot pipe. 樽型形状のポリマー碍管に外被材を取り付ける工程について説明するための図である。It is a figure for demonstrating the process of attaching a jacket material to a barrel-shaped polymer container pipe. 比較例に係るポリマー碍管について説明するための図である。It is a figure for demonstrating the polymer soot pipe concerning a comparative example.

本発明を実施するための形態（以下、本実施形態という。）について具体例を示して説明する。本実施形態は、電力ケーブルの気中終端接続箱などに用いられるポリマー碍管を製造するポリマー碍管の製造方法に関する。   A mode for carrying out the present invention (hereinafter referred to as the present embodiment) will be described with a specific example. The present embodiment relates to a method for manufacturing a polymer soot tube that manufactures a polymer soot tube used in an air terminal junction box or the like of a power cable.

まず、製造方法の具体的な説明に先立ち、ポリマー碍管の構成について、図１を参照して説明する。図１は、ポリマー碍管１の断面視した図である。   First, prior to specific description of the manufacturing method, the configuration of the polymer soot tube will be described with reference to FIG. FIG. 1 is a cross-sectional view of a polymer soot tube 1.

ポリマー碍管１は、図１に示すように、ＦＲＰなどの絶縁性の樹脂からなる碍管本体１１と、碍管本体１１の表面を覆う外被材１２と、碍管本体１１の両端、つまり高圧端１ａと接地端１ｂとにそれぞれ固定されている金属製のフランジ金具１３ａ、１３ｂと、を備える。   As shown in FIG. 1, the polymer soot tube 1 is composed of a soot tube body 11 made of an insulating resin such as FRP, an outer covering material 12 covering the surface of the soot tube body 11, both ends of the soot tube body 11, that is, the high-pressure end 1a. Metal flange fittings 13a and 13b fixed to the grounding end 1b, respectively.

外被材１２は、常温で収縮可能なゴムなどの樹脂材料によって形成されている。また、外被材１２は、高圧端１ａから接地端１ｂまでの表面漏洩距離を確保するため、高圧端１ａから接地端１ｂに亘って所定間隔おきに、独立したリング形状のリング部２１が複数設けられている。つまり、リング部２１は、外被材１２の一部をなしている。   The jacket material 12 is formed of a resin material such as rubber that can shrink at room temperature. In addition, in order to ensure a surface leakage distance from the high-voltage end 1a to the grounding end 1b, the jacket material 12 includes a plurality of independent ring-shaped ring portions 21 at predetermined intervals from the high-pressure end 1a to the grounding end 1b. Is provided. That is, the ring portion 21 forms a part of the jacket material 12.

フランジ金具１３ａ、１３ｂは、それぞれ碍管本体１１の端部と、外被材１２の端部とを覆うように固定されている。また、後述するようにフランジ金具１３ａ、１３ｂの端部と、外被材１２の端部との隙間は、粘ちょう性絶縁体でシールされている。   The flange fittings 13a and 13b are fixed so as to cover the end portion of the soot tube main body 11 and the end portion of the jacket material 12, respectively. Further, as will be described later, the gaps between the end portions of the flange fittings 13a and 13b and the end portion of the jacket material 12 are sealed with a viscous insulator.

上記のような構成のポリマー碍管１については、例えば、リング部２１が鳥に啄まれたり、金属粉や糞が堆積するなど、外部環境に起因して絶縁特性が低下しうる。そこで、本実施形態に係るポリマー碍管の製造方法では、上記の外部環境に起因して絶縁特性が低下したポリマー碍管において、外被材を容易に交換でき、かつ良好な絶縁特性を維持可能なポリマー碍管を製造するために用いられる。以下では、当該製造方法について説明する。   With respect to the polymer rod 1 having the above-described configuration, for example, the insulating characteristics may be deteriorated due to the external environment, such as the ring portion 21 being bitten by a bird or the accumulation of metal powder or feces. Therefore, in the method of manufacturing a polymer soot tube according to this embodiment, in the polymer soot tube whose insulation characteristics have been deteriorated due to the external environment described above, a polymer capable of easily replacing the jacket material and maintaining good insulation properties Used to manufacture the soot tube. Below, the said manufacturing method is demonstrated.

まず、外被材１２として、内径が碍管本体１１の外径Ｒ１１以下の高分子製（ゴム製）の筒体を準備する。そして、準備した外被材１２を、図２（Ａ）に示すように、碍管本体１１の外径Ｒ１１以上の内径Ｒ１２に拡径した状態で、拡径した外被材１２の内側表面に、紐部材を螺旋状にすることで構成されるスパイラルコア３０を取り付けて固定する。続いて、スパイラルコア３０により拡径した状態を維持された外被材１２を、図２（Ａ）の矢印Ｉの方向に移動させて、碍管本体１１に挿入する。   First, a cylindrical body made of a polymer (made of rubber) having an inner diameter equal to or smaller than the outer diameter R11 of the tub tube main body 11 is prepared as the jacket material 12. Then, as shown in FIG. 2 (A), the prepared jacket material 12 is expanded to an inner diameter R12 equal to or greater than the outer diameter R11 of the soot tube body 11, and on the inner surface of the expanded jacket material 12, A spiral core 30 configured by spiraling the string member is attached and fixed. Subsequently, the outer covering material 12 maintained in the expanded state by the spiral core 30 is moved in the direction of arrow I in FIG.

続いて、図２（Ｂ）に示すように、碍管本体１１の表面上で、外被材１２からスパイラルコア３０を引き抜くことで外被材１２を常温収縮させる、言い換えれば、外被材１２を縮径して碍管本体１１の表面に装着する。   Subsequently, as shown in FIG. 2 (B), the sheath material 12 is contracted at room temperature by pulling out the spiral core 30 from the sheath material 12 on the surface of the soot tube body 11, in other words, the sheath material 12 is The diameter is reduced and attached to the surface of the soot tube main body 11.

さらに、図２（Ｃ）に示すように、外被材１２を装着した碍管本体１１について、外被材１２との隙間を、粘ちょう性絶縁体３５でシールすることで、当該隙間を密閉する。以上のように、図２を用いて説明した製造方法により、ポリマー碍管１を製造することができる。   Furthermore, as shown in FIG. 2 (C), the gap between the outer tube main body 11 to which the outer jacket material 12 is attached is sealed with a viscous insulator 35 to seal the gap. . As described above, the polymer soot tube 1 can be manufactured by the manufacturing method described with reference to FIG.

次に、以上のように製造されたポリマー碍管１は、例えば図３を用いて説明するように、容易に新品の外被材１２に交換することができる。まず、図３（Ａ）に示すように、外的要因により汚損ないし損傷された外被材１２ａを、カッターなどで切り裂いて、碍管本体１１から除去する。続いて、図３（Ｂ）に示すように、新品の外被材１２ｂを碍管本体１１に取り付ける。つまり、図３（Ｂ）に示すように、スパイラルコア３０により拡径した状態を維持された新品の外被材１２ｂを、図３（Ａ）の矢印の方向に移動させて、碍管本体１１に挿入することで、ポリマー碍管１の絶縁特性を回復させることができる。   Next, the polymer soot tube 1 manufactured as described above can be easily replaced with a new jacket material 12 as described with reference to FIG. First, as shown in FIG. 3 (A), the jacket material 12a that is soiled or damaged by an external factor is cut off by a cutter or the like and removed from the tub tube body 11. Subsequently, as shown in FIG. 3B, a new jacket material 12 b is attached to the tub tube body 11. That is, as shown in FIG. 3 (B), the new jacket material 12b maintained in the expanded state by the spiral core 30 is moved in the direction of the arrow in FIG. By inserting, the insulating characteristics of the polymer soot tube 1 can be recovered.

上記図２及び図３を用いて説明した製造方法では、拡径した外被材１２を碍管本体１１に挿入して装着することから、例えば、図４（Ａ）に示すような樽型形状などの複雑な形状の碍管本体１１Ｂに対しても、隙間無く装着することができる。比較例として、図４（Ｂ）に示すように、スパイラルコア３０で拡径されていない外被材４０では、樽型形状の碍管本体１１Ｂに取り付けようとしても、碍管本体１１Ｂの中腹部分１１Ｂ１で外被材４０が引っかかってしまい、挿入することができない。このような比較例を考慮すれば、上記図２及び図３を用いて説明した製造方法では、複雑な形状の碍管本体１１Ｂに対しても、隙間無く外被材１２を装着することができることは明らかである。   In the manufacturing method described with reference to FIGS. 2 and 3 above, since the outer cover material 12 having an enlarged diameter is inserted and attached to the tub tube main body 11, for example, a barrel shape as shown in FIG. It can be mounted without any gap even on the complicatedly shaped soot tube body 11B. As a comparative example, as shown in FIG. 4 (B), in the jacket material 40 that is not expanded in diameter by the spiral core 30, even if it is intended to be attached to the barrel-shaped tub tube body 11B, the middle part 11B1 of the tub tube body 11B The jacket material 40 is caught and cannot be inserted. In consideration of such a comparative example, in the manufacturing method described with reference to FIGS. 2 and 3, it is possible to attach the outer covering material 12 without any gap to the complicatedly shaped tub tube body 11B. it is obvious.

また、上記図２及び図３に示す製造方法では、独立したリング形状のリング部２１を有する外被材１２を用いることができることから、例えば図５に示すように、外被表面を螺旋形状としたポリマー碍管５０に比べて、良好な絶縁特性を実現することができる。比較例に係るポリマー碍管５０は、特許文献２（特開２０００−２４３１６２号公報）に記載されるような碍管本体５１と外被材５２との表面が螺旋形状となっている。このような螺旋形状とすることで、外被材５２を回転させながら碍管本体５１に着脱することができる。しかしながら、このような螺旋形状を採用すると、外被材５１に、独立したリング部を形成して、図５の実線Ｌ１で示すように、高圧端から接地端に亘る表面漏洩距離を長くしようとしても、実際の表面漏洩距離が図５の破線Ｌ２で示す螺旋形状の表面に沿った経路となり、フラッシュオーバーしやすい。ここで、フラッシュオーバーとは、気体中で高圧ないし接地間に放電路が形成されることであって、碍管においては外被の絶縁性能が低下して放電してしまうことをいう。一方、本実施形態の製造方法で製造されるポリマー碍管１は、碍管本体１１および外被材１２について螺旋形状としなくても容易に着脱可能であるため、独立したリング形状（リング部２１）を有する外被材１２によって、表面漏洩距離を十分に長く確保することができ、良好な絶縁特性を実現することができる。   Further, in the manufacturing method shown in FIG. 2 and FIG. 3, since the jacket material 12 having the independent ring-shaped ring portion 21 can be used, for example, as shown in FIG. As compared with the polymer soot tube 50, good insulating characteristics can be realized. As for the polymer soot pipe 50 which concerns on a comparative example, the surface of the soot pipe main body 51 and the jacket material 52 which are described in patent document 2 (Unexamined-Japanese-Patent No. 2000-243162) has a spiral shape. By setting it as such a spiral shape, the outer covering material 52 can be attached to and detached from the soot tube main body 51 while rotating. However, when such a spiral shape is adopted, an independent ring portion is formed in the jacket material 51 to increase the surface leakage distance from the high-voltage end to the ground contact end as shown by the solid line L1 in FIG. However, the actual surface leakage distance becomes a path along the spiral surface indicated by the broken line L2 in FIG. Here, the flashover means that a discharge path is formed between high pressure or ground in the gas, and in the soot tube, the insulation performance of the jacket is lowered and discharge occurs. On the other hand, the polymer soot tube 1 manufactured by the manufacturing method of the present embodiment can be easily attached / detached without having a spiral shape with respect to the soot tube body 11 and the jacket material 12, so that an independent ring shape (ring portion 21) is formed. The outer cover material 12 can ensure a sufficiently long surface leakage distance and realize good insulating characteristics.

つまり、本実施形態が適用された製造方法によれば、鳥害などの外部環境に起因して絶縁特性が低下したポリマー碍管において、外被を容易に交換でき、かつ良好な絶縁特性を維持可能なポリマー碍管を製造することができる。   In other words, according to the manufacturing method to which the present embodiment is applied, the outer casing can be easily replaced and the good insulating characteristics can be maintained in the polymer pipe whose insulating characteristics have deteriorated due to the external environment such as bird damage. Can be produced.

さらに好ましくは、碍管本体と外被材との隙間を、粘ちょう性絶縁体３５でシールすることにより、当該隙間からの水の浸入によって碍管本体と外被材との隙間で放電したり、浸水によって碍管本体が経年劣化したりすることを防止することができる。粘ちょう性絶縁体としては特定の部材に限定するものではないが、例えばアラルダイト（チバガイギー社製）のようなエポキシ系接着剤を用いることができる。   More preferably, the gap between the main tube body and the jacket material is sealed with a viscous insulator 35, so that water is discharged from the gap and the gap between the main tube body and the jacket material is immersed in water. Therefore, it is possible to prevent the tubule body from being deteriorated over time. The viscous insulator is not limited to a specific member, but for example, an epoxy adhesive such as Araldite (manufactured by Ciba Geigy) can be used.

１ ポリマー碍管
１１、１１Ｂ 碍管本体
１２、１２ａ、１２ｂ 外被材 1 Polymer soot tube 11, 11B Soot tube body 12, 12a, 12b Jacket material

Claims (3)

碍管本体の表面が、高分子製の外被材に覆われたポリマー碍管の製造方法において、
内径が前記碍管本体の外径以下である高分子製筒体を、前記外被材として準備するステップと、
前記準備した外被材の内径を、前記碍管本体の外径以上に拡径するステップと、
前記拡径した外被材を前記碍管本体に挿入するステップと、
前記挿入した前記外被材を縮径して前記碍管本体の表面に装着するステップと、を有することを特徴とするポリマー碍管の製造方法。 In the method for producing a polymer soot tube in which the surface of the soot tube body is covered with a polymer jacket material,
Preparing a polymer cylinder having an inner diameter equal to or less than the outer diameter of the soot tube body as the jacket material;
Expanding the inner diameter of the prepared jacket material to be greater than or equal to the outer diameter of the soot tube body; and
Inserting the expanded outer covering material into the soot tube body;
And a step of reducing the diameter of the inserted outer jacket material and mounting it on the surface of the soot tube main body. 前記外被材を装着した碍管本体について、前記外被材との隙間を、粘ちょう性絶縁体でシールするステップを、さらに有することを特徴とする請求項１記載のポリマー碍管の製造方法。   The method for producing a polymer soot tube according to claim 1, further comprising the step of sealing the gap between the sheath material with the sheath material with a viscous insulator. 碍管本体と、
内径が前記碍管本体の外径以下である高分子製筒体の外被材と、を備え、
前記外被材は、前記碍管本体の外径以上に拡径されて前記碍管本体に挿入された状態で、前記外被材の内径が縮径されることで前記碍管本体の表面に装着されたことを特徴とするポリマー碍管。 碍 pipe body,
An outer shell material of a polymer cylinder having an inner diameter equal to or less than the outer diameter of the soot tube main body,
The sheath material is attached to the surface of the soot tube body by reducing the inner diameter of the sheath material in a state where the sheath material is expanded beyond the outer diameter of the soot tube body and inserted into the soot tube body. A polymer soot tube characterized by that.
JP2015122589A 2015-06-18 2015-06-18 Method for manufacturing polymer insulation tube, and polymer insulation tube Pending JP2017010668A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02148627A (en) * 1988-11-30 1990-06-07 Meidensha Corp Bushing
JPH0729435A (en) * 1993-07-16 1995-01-31 Nitto Denko Corp Polymer composite insulator and its manufacture
JP2001084854A (en) * 1999-09-06 2001-03-30 Three M Innovative Properties Co Polymer insulator and its manufacture
JP2002532823A (en) * 1998-12-04 2002-10-02 シーメンス アクチエンゲゼルシヤフト Hollow insulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02148627A (en) * 1988-11-30 1990-06-07 Meidensha Corp Bushing
JPH0729435A (en) * 1993-07-16 1995-01-31 Nitto Denko Corp Polymer composite insulator and its manufacture
JP2002532823A (en) * 1998-12-04 2002-10-02 シーメンス アクチエンゲゼルシヤフト Hollow insulator
JP2001084854A (en) * 1999-09-06 2001-03-30 Three M Innovative Properties Co Polymer insulator and its manufacture

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