JP5358640B2 - OF cable repair device and repair method - Google Patents

OF cable repair device and repair method Download PDF

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JP5358640B2
JP5358640B2 JP2011205481A JP2011205481A JP5358640B2 JP 5358640 B2 JP5358640 B2 JP 5358640B2 JP 2011205481 A JP2011205481 A JP 2011205481A JP 2011205481 A JP2011205481 A JP 2011205481A JP 5358640 B2 JP5358640 B2 JP 5358640B2
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cable
expansion tube
outer peripheral
peripheral surface
cover
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JP2013070458A (en
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雅規 武用
義明 伊達
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To easily repair an oil leakage location of an OF (oil-filled) cable. <P>SOLUTION: Oil leakage is suppressed by sticking an adhesive tape 2 to an oil leakage location C1; an expansion tube 3 is wound around an outer peripheral surface of an OF cable C including the adhesive tape 2 ; and a pressing cover 4 is attached so as to cover the expansion tube 3. In this state, the expansion tube 3 is expanded by injecting air into the expansion tube 3. Thereby, the expansion tube 3 is pressed by the pressing cover 4, and brought into close contact with the outer peripheral surface of the OF cable C. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

この発明は、ＯＦケーブルの漏油箇所を補修するためのＯＦケーブル補修装置および補修方法に関する。   The present invention relates to an OF cable repair device and a repair method for repairing an oil leakage point of an OF cable.

ＯＦケーブルは、絶縁用の油を所定の圧力で内部に注入、充填することで、絶縁性を高めたケーブルであり、油圧を保持している金属被覆が経年劣化によって損傷したり、第三者による工事の際に誤って損傷したりして、漏油が発生する場合がある。このような場合、漏油箇所を含めて所定長さだけＯＦケーブルを切断して、張り替える必要があるが、張り替えには多大な時間と労力とを要するため、張り替え（本補修）に先だって漏油量を極力抑えるために、初期対応として漏油箇所を補修（仮油止め処理）する必要がある。   The OF cable is a cable with improved insulation by injecting and filling insulating oil into the interior at a predetermined pressure, and the metal coating that holds the hydraulic pressure is damaged by aging, or a third party. Oil leakage may occur due to accidental damage during construction. In such a case, it is necessary to cut the OF cable by a predetermined length including the oil leakage point and replace it. However, since it takes a lot of time and labor, the leakage is required prior to the replacement (main repair). In order to suppress the amount of oil as much as possible, it is necessary to repair the oil leakage part (temporary oil stop treatment) as an initial response.

このような補修として、ＯＦケーブルの鉛被の亀裂部の外周上に、ゴム・プラスチックテープを高張力で巻回して仮止め層を設け、その上にガラス繊維テープの巻回層とエポキシ樹脂層とを積層して、油止め層を設ける技術が知られている（例えば、特許文献１参照。）。また、漏油箇所周辺の防食層を剥ぎ取り、漏油箇所を挟むように台座を周設し、この台座をまたがって銅管を装着して、銅管と台座とを鉛工によって接合する技術が知られている（例えば、特許文献２参照。）。   As such repair, a temporary fixing layer is provided by winding rubber / plastic tape with high tension on the outer periphery of the cracked portion of the lead cover of the OF cable, and a wound layer of glass fiber tape and an epoxy resin layer thereon. Is known to provide an oil stop layer (see, for example, Patent Document 1). In addition, the anti-corrosion layer around the oil leak location is peeled off, a pedestal is provided around the oil leak location, a copper pipe is mounted across the base, and the copper tube and the pedestal are joined by lead craft. (For example, refer to Patent Document 2).

実開平０２−０３７５３０号公報Japanese Utility Model Publication No. 02-037530 特開２０００−３４１８２０号公報JP 2000-341820 A

しかしながら、特許文献１の技術では、漏油を停止させるように施工するには、ゴム・プラスチックテープとガラス繊維テープとを適正な張力で、しかも、２つのテープを重ね合わせながら順次巻かなければならない。このため、作業には熟練を要し、また、最低二人の作業者を要し、しかも、長時間を要する。   However, in the technique of Patent Document 1, in order to stop the oil leakage, the rubber / plastic tape and the glass fiber tape must be wound with proper tension, and the two tapes must be wound one after the other. Don't be. For this reason, the work requires skill, requires at least two workers, and takes a long time.

同様に、特許文献２の技術においても、銅管と台座とを鉛工によって接合する、などという作業を行わなければならないため、作業には特殊技能を要し、専任の作業員などを現地に派遣する必要があり、補修完了までに長時間を要してしまう。しかも、ＯＦケーブルは、通常、管路内に配設された状態で地下に埋設などされており、作業空間・環境が限られているため、より容易な補修方法が求められている。   Similarly, in the technique of Patent Document 2, work such as joining a copper tube and a pedestal by lead works must be performed, so the work requires special skills, and full-time workers are on-site. It is necessary to dispatch, and it takes a long time to complete the repair. Moreover, the OF cable is normally buried in the basement in a state of being disposed in the pipeline, and the work space and environment are limited. Therefore, an easier repair method is required.

そこでこの発明は、ＯＦケーブルの漏油箇所を容易に補修することを可能にする、ＯＦケーブル補修装置および補修方法を提供することを目的とする。   Accordingly, an object of the present invention is to provide an OF cable repairing apparatus and a repairing method that make it possible to easily repair an oil leakage portion of an OF cable.

前記課題を解決するために、請求項１の発明は、内部に油が注入されたＯＦケーブルの外周面に形成された漏油箇所を補修するためのＯＦケーブル補修装置であって、前記漏油箇所に貼り付けられて漏油を抑える接着テープと、前記接着テープを含むＯＦケーブルの外周面に巻き付けられ、内部に気体が注入されることで膨張する膨張チューブと、前記ＯＦケーブルの外周面に巻き付けられた膨張チューブを着脱自在に覆い、気体が注入されることで膨張した膨張チューブを押圧して、前記膨張チューブを前記ＯＦケーブルの外周面に密着させる押圧カバーと、を備えることを特徴とする。   In order to solve the above-mentioned problem, the invention of claim 1 is an OF cable repair device for repairing an oil leak location formed on an outer peripheral surface of an OF cable into which oil has been injected. An adhesive tape that is attached to a portion to suppress oil leakage, an expansion tube that is wound around an outer peripheral surface of an OF cable including the adhesive tape, and expands when gas is injected therein, and an outer peripheral surface of the OF cable A press cover that covers the wound expansion tube in a detachable manner, presses the expansion tube expanded by injecting gas, and tightly contacts the expansion tube with the outer peripheral surface of the OF cable. To do.

この発明によれば、接着テープを漏油箇所に貼り付けて漏油を抑え、接着テープを含むＯＦケーブルの外周面に膨張チューブを巻き付け、膨張チューブを覆うように押圧カバーを装着する。この状態で、膨張チューブに気体を注入して膨張チューブを膨張させることで、押圧カバーが膨張チューブを押圧して、膨張チューブがＯＦケーブルの外周面に密着し、油の外部への漏出が防止・抑止される。   According to this invention, the adhesive tape is affixed to an oil leakage location to suppress oil leakage, the expansion tube is wound around the outer peripheral surface of the OF cable including the adhesive tape, and the pressure cover is attached so as to cover the expansion tube. In this state, by injecting gas into the expansion tube and expanding the expansion tube, the pressure cover presses the expansion tube, the expansion tube adheres to the outer peripheral surface of the OF cable, and leakage of oil to the outside is prevented.・ Deterred.

請求項２の発明は、請求項１に記載のＯＦケーブル補修装置において、前記膨張チューブに設けられた気体注入部を外部に露出させる露出部が、前記押圧カバーに設けられている、ことを特徴とする。   According to a second aspect of the present invention, in the OF cable repairing apparatus according to the first aspect, an exposed portion that exposes the gas injection portion provided in the expansion tube to the outside is provided in the pressing cover. And

請求項３の発明は、請求項１または２に記載のＯＦケーブル補修装置において、前記押圧カバーが筒状で、その両端部に、膨張した前記膨張チューブが前記押圧カバーから突出するのを防止する突出防止部が設けられている、ことを特徴とする。   According to a third aspect of the present invention, in the OF cable repairing device according to the first or second aspect, the pressing cover is cylindrical, and the expanded tube that has expanded is prevented from projecting from the pressing cover at both ends thereof. The protrusion prevention part is provided, It is characterized by the above-mentioned.

請求項４の発明は、内部に油が注入されたＯＦケーブルの外周面に形成された漏油箇所を補修するＯＦケーブル補修方法であって、接着テープを前記漏油箇所に貼り付けて漏油を抑え、前記接着テープを含むＯＦケーブルの外周面に膨張チューブを巻き付け、前記膨張チューブを覆うように押圧カバーを装着し、この状態で、前記膨張チューブに気体を注入して前記膨張チューブを膨張させることで、前記押圧カバーで前記膨張チューブを押圧して、前記膨張チューブを前記ＯＦケーブルの外周面に密着させる、ことを特徴とする。   The invention of claim 4 is an OF cable repairing method for repairing an oil leakage spot formed on the outer peripheral surface of the OF cable into which oil has been injected, and an adhesive tape is attached to the oil leakage spot to leak the oil. The expansion tube is wound around the outer peripheral surface of the OF cable including the adhesive tape, and a pressure cover is attached so as to cover the expansion tube. In this state, gas is injected into the expansion tube to expand the expansion tube. By doing so, the expansion tube is pressed by the pressing cover, and the expansion tube is brought into close contact with the outer peripheral surface of the OF cable.

この発明によれば、膨張チューブがＯＦケーブルの外周面に密着することで、油の外部への漏出が防止・抑止される。   According to this invention, since the expansion tube is in close contact with the outer peripheral surface of the OF cable, leakage of oil to the outside is prevented / suppressed.

請求項５の発明は、請求項４に記載のＯＦケーブル補修方法において、前記膨張チューブに気体を注入した後に、前記押圧カバーの両端部において前記膨張チューブと前記ＯＦケーブルの外周面との接触部に、充填剤を塗設する、ことを特徴とする。   According to a fifth aspect of the present invention, in the OF cable repairing method according to the fourth aspect, after injecting gas into the expansion tube, contact portions between the expansion tube and the outer peripheral surface of the OF cable at both ends of the press cover. In addition, a filler is applied.

請求項１および４の発明によれば、接着テープを漏油箇所に貼り付けて膨張チューブを巻き付け、押圧カバーを装着して、膨張チューブに気体を注入することで、油が外部へ漏出するのを防止・抑止することができる。しかも、接着テープの貼り付けや、膨張チューブの巻き付け、膨張チューブへの気体の注入などは、誰でも行える行為であり、特殊な技能や経験などを要しない。このため、ＯＦケーブルの漏油箇所を容易に補修することが可能となる。さらに、膨張チューブから気体を抜いて押圧カバーを外し、膨張チューブを取り除くだけで、本装置をＯＦケーブルから容易に取り外すことができ、しかも、本装置を何度でも使い回しすることができる。   According to the first and fourth aspects of the present invention, the oil leaks to the outside by attaching the adhesive tape to the oil leakage portion, winding the expansion tube, attaching the pressure cover, and injecting the gas into the expansion tube. Can be prevented / deterred. Moreover, any one of the operations that can be performed by the adhesive tape, the winding of the expansion tube, the injection of the gas into the expansion tube, etc. does not require special skills and experience. For this reason, it becomes possible to repair the oil leak location of the OF cable easily. Furthermore, the apparatus can be easily detached from the OF cable by simply removing the gas from the expansion tube, removing the pressure cover, and removing the expansion tube, and the apparatus can be reused over and over again.

請求項２の発明によれば、押圧カバーに設けられた露出部を介して、膨張チューブの気体注入部が外部に露出されるため、膨張チューブを押圧カバーで覆った後においても、気体注入部から膨張チューブ内に気体を容易に注入することができる。   According to invention of Claim 2, since the gas injection part of an expansion tube is exposed outside via the exposure part provided in the press cover, even after covering an expansion tube with a press cover, a gas injection part Thus, gas can be easily injected into the expansion tube.

請求項３の発明によれば、筒状の押圧カバーの両端部に突出防止部が設けられているため、気体の注入で膨張チューブが膨張しても、膨張チューブが押圧カバーから突出しない。この結果、膨張チューブが押圧カバー内で適正に膨張し、膨張チューブがＯＦケーブルの外周面に隙間なく適正に（所定圧で）密着して、油の外部への漏出をより防止・抑止することができる。   According to invention of Claim 3, since the protrusion prevention part is provided in the both ends of the cylindrical press cover, even if an expansion tube expand | swells by gas injection, an expansion tube does not protrude from a press cover. As a result, the expansion tube is properly expanded in the pressure cover, and the expansion tube is properly adhered to the outer peripheral surface of the OF cable without any gap (at a predetermined pressure), thereby further preventing and suppressing leakage of oil to the outside. Can do.

請求項５の発明によれば、押圧カバーの両端部で膨張チューブとＯＦケーブルの外周面との接触部に充填剤を塗設するため、接触部（隙間）から油が外部へ漏出するのをより防止・抑止することができる。   According to the fifth aspect of the present invention, since the filler is applied to the contact portion between the expansion tube and the outer peripheral surface of the OF cable at both ends of the press cover, oil leaks out from the contact portion (gap). It can be prevented / suppressed more.

この発明の実施の形態に係るＯＦケーブル補修装置を使用したＯＦケーブル補修方法を示す工程図であり、（ａ）は、補修開始前の状態を示し、（ｂ）は、接着テープを貼り付けた状態を示し、（ｃ）は、膨張チューブを巻き付けた状態を示し、（ｄ）は、押圧カバーを装着した状態を示し、（ｅ）は、膨張チューブを膨張させた状態を示す。It is process drawing which shows the OF cable repair method using the OF cable repair apparatus which concerns on embodiment of this invention, (a) shows the state before repair start, (b) stuck the adhesive tape The state is shown, (c) shows a state where the expansion tube is wound, (d) shows a state where the pressing cover is attached, and (e) shows a state where the expansion tube is expanded. 図１の補修装置の膨張チューブを示す正面図である。It is a front view which shows the expansion tube of the repair apparatus of FIG. 図１の補修装置の押圧カバーを示す正面図（ａ）と、その左側面（ｂ）である。It is the front view (a) which shows the press cover of the repair apparatus of FIG. 1, and the left side surface (b). 図３の押圧カバーを開いた状態を示す平面図である。It is a top view which shows the state which opened the press cover of FIG. この発明の実施の形態において、ＯＦケーブルが配設されている管路に作業窓を形成した状態を示す正面図である。In embodiment of this invention, it is a front view which shows the state which formed the work window in the pipe line by which OF cable is arrange | positioned.

以下、この発明を図示の実施の形態に基づいて説明する。   The present invention will be described below based on the illustrated embodiments.

図１は、この発明の実施の形態に係るＯＦケーブル補修装置１を使用したＯＦケーブル補修方法を示す工程図である。このＯＦケーブル補修装置１は、内部に油が注入されたＯＦケーブルＣの外周面に形成された漏油箇所Ｃ１を補修するための装置であり、主として、接着テープ２と、膨張チューブ３と、押圧カバー４とを備えている。ここで、この実施の形態では、恒久的な対策である本補修に先だって初期対応として行う仮補修に対して、本ＯＦケーブル補修方法を適用する場合について主として説明するが、漏油状態やＯＦケーブルＣの使用年数、設置環境などによっては、本補修として本ＯＦケーブル補修方法を適用してもよい。   FIG. 1 is a process diagram showing an OF cable repair method using an OF cable repair device 1 according to an embodiment of the present invention. This OF cable repair device 1 is a device for repairing an oil leakage location C1 formed on the outer peripheral surface of the OF cable C into which oil has been injected, and mainly includes an adhesive tape 2, an expansion tube 3, A pressing cover 4 is provided. Here, in this embodiment, the case where the present OF cable repair method is applied to the temporary repair that is performed as the initial countermeasure prior to the permanent repair, which is a permanent countermeasure, will be mainly described. Depending on the years of use of C, the installation environment, etc., this OF cable repair method may be applied as this repair.

接着テープ２は、漏油箇所Ｃ１に貼り付けられて漏油を抑えるテープであり、ＯＦケーブルＣの表面に密着した状態で接着して、漏油を一次的に抑えられるものであればよく、例えば、ゴム製テープやプラスチック製テープなどが挙げられる。また、接着テープ２の大きさは、漏油箇所Ｃ１からの漏油を一次的に抑えられ、かつ、後述するようにして膨張チューブ３がＯＦケーブルＣの外周面に密着した際に、漏油箇所Ｃ１からの漏油を抑えられるように設定されている。   The adhesive tape 2 is a tape that is affixed to the oil leakage location C1 and suppresses the oil leakage, and can be bonded to the surface of the OF cable C in a state of being in close contact with the oil cable, so that the oil leakage can be temporarily suppressed. For example, a rubber tape, a plastic tape, etc. are mentioned. The size of the adhesive tape 2 is such that when the expansion tube 3 comes into close contact with the outer peripheral surface of the OF cable C as described later, the oil leakage from the oil leakage location C1 is temporarily suppressed. It is set so that oil leakage from the location C1 can be suppressed.

膨張チューブ３は、接着テープ２を含むＯＦケーブルＣの外周面に巻き付けられ、内部に空気（気体）が注入されることで膨張するチューブである。すなわち、図２に示すように、両端が閉じられた長いチューブで、例えば、自転車のタイヤのチューブを直線状に延ばしたようなもので、耐ガス透過性や耐屈曲亀裂性などに優れたブルチゴムなどで構成されている。この膨張チューブ３の断面形状（直径）は、後述するようにして膨張した際に、押圧カバー４内とＯＦケーブルＣとで形成される収容空間Ｓ内に隙間なく膨張し、押圧カバー４で押圧されてＯＦケーブルＣの外周面に所定圧（油の流出を抑止・防止可能な圧力）で隙間なく密着するように、設定されている。   The expansion tube 3 is a tube that is wound around the outer peripheral surface of the OF cable C including the adhesive tape 2 and expands when air (gas) is injected therein. That is, as shown in FIG. 2, it is a long tube closed at both ends, for example, a tube of a bicycle tire that is linearly extended, and has excellent gas permeation resistance, flex crack resistance, and the like. Etc. The cross-sectional shape (diameter) of the expansion tube 3 expands without a gap in the housing space S formed by the pressure cover 4 and the OF cable C when expanded as described later, and is pressed by the pressure cover 4. Thus, the OF cable C is set so as to be in close contact with the outer peripheral surface of the OF cable C with a predetermined pressure (pressure capable of suppressing / preventing oil outflow) without a gap.

さらに、膨張チューブ３の長さ、つまり、ＯＦケーブルＣに巻き付けられる長さは、接着テープ２（漏油箇所Ｃ１）に対して十分な圧力を与えられ、かつ、接着テープ２から漏れ出た油の流出を抑止・防止できるように設定されている。また、一端部側には、内部に空気を注入するためのバルブ（気体注入部）３１が設けられている。   Furthermore, the length of the expansion tube 3, that is, the length wound around the OF cable C is sufficient pressure applied to the adhesive tape 2 (oil leakage location C 1), and the oil leaked from the adhesive tape 2. It is set so that the outflow of water can be suppressed and prevented. Moreover, the valve | bulb (gas injection | pouring part) 31 for inject | pouring air inside is provided in the one end part side.

押圧カバー４は、ＯＦケーブルＣの外周面に巻き付けられた膨張チューブ３を着脱自在に覆い、空気が注入されることで膨張した膨張チューブ３を押圧して、膨張チューブ３をＯＦケーブルＣの外周面に密着させるカバーである。具体的には、図３、４に示すように、略円筒状で、軸心を通る切断面で上カバー４１と下カバー４２とに分かれ、ヒンジ４３を介して、上カバー４１と下カバー４２とが観音開き状に開閉自在となっている。また、上カバー４１の開口端縁には、長手方向に沿って２つのフック４４が設けられ、このフック４４を下カバー４２の開口端縁に設けられた被フック部（図示せず）に係止することで、上カバー４１と下カバー４２と閉じ、係止を解除することで、上カバー４１と下カバー４２とが開くようになっている。このようにして、ＯＦケーブルＣに巻き付けられた膨張チューブ３に対して、着脱自在となっている。   The pressing cover 4 detachably covers the expansion tube 3 wound around the outer peripheral surface of the OF cable C, presses the expansion tube 3 expanded by air being injected, and the expansion tube 3 is pressed to the outer periphery of the OF cable C. It is a cover that adheres to the surface. Specifically, as shown in FIGS. 3 and 4, it is substantially cylindrical and is divided into an upper cover 41 and a lower cover 42 at a cut surface passing through the axis, and the upper cover 41 and the lower cover 42 are connected via a hinge 43. And can be opened and closed like a double door. Further, two hooks 44 are provided along the longitudinal direction at the opening edge of the upper cover 41, and the hooks 44 are engaged with hooked portions (not shown) provided at the opening edge of the lower cover 42. The upper cover 41 and the lower cover 42 are closed by stopping, and the upper cover 41 and the lower cover 42 are opened by releasing the locking. In this way, the expansion tube 3 wound around the OF cable C is detachable.

また、上カバー４１と下カバー４２との両端部には、後述するようにして膨張した膨張チューブ３が、押圧カバー４から突出するのを防止する側壁（突出防止部）４１ａ、４２ａが形成されている。この側壁４１ａ、４２ａは、上・下カバー４１、４２の側縁から軸心側に延び、上・下カバー４１、４２が閉じた際に、ＯＦケーブルＣを挿入可能な挿入孔４ａが構成されるように形成されている。すなわち、側壁４１ａ、４２ａの開放端縁（挿入孔４ａの周縁）がＯＦケーブルＣに接触した状態で、上・下カバー４１、４２が閉じることで、膨張チューブ３が押圧カバー４の両側からはみ出るのを防止するようになっている。   Further, side walls (protrusion prevention portions) 41 a and 42 a for preventing the expansion tube 3 expanded as described later from protruding from the pressing cover 4 are formed at both ends of the upper cover 41 and the lower cover 42. ing. The side walls 41a and 42a extend from the side edges of the upper and lower covers 41 and 42 to the axial center side, and an insertion hole 4a into which the OF cable C can be inserted when the upper and lower covers 41 and 42 are closed is formed. It is formed so that. That is, the expansion tube 3 protrudes from both sides of the pressing cover 4 when the upper and lower covers 41 and 42 are closed in a state where the open end edges (the peripheral edge of the insertion hole 4a) of the side walls 41a and 42a are in contact with the OF cable C. It is designed to prevent this.

このような押圧カバー４の外径は、後述する管路Ｔ（図５参照）内に押圧カバー４を挿入・配設できるように設定され、押圧カバー４の内径は、膨張した膨張チューブ３を押圧してＯＦケーブルＣの外周面に所定圧で密着させられるように、設定されている。また、押圧カバー４の長さは、全膨張チューブ３を収容し、かつ、膨張した膨張チューブ３が収容空間Ｓ内に隙間なく膨張するように、設定されている。   The outer diameter of the pressure cover 4 is set so that the pressure cover 4 can be inserted and disposed in a pipe T (see FIG. 5) described later. It is set so that it can be pressed and brought into close contact with the outer peripheral surface of the OF cable C with a predetermined pressure. The length of the press cover 4 is set so that the entire expansion tube 3 is accommodated and the expanded expansion tube 3 expands in the accommodation space S without a gap.

さらに、押圧カバー４は、膨張した膨張チューブ３を上記のように押圧するのに十分な強度、剛性を有し、かつ絶縁性を有する材料で構成されている。また、上カバー４１には、膨張チューブ３のバルブ３１を外部に露出させる露出孔（露出部）４１ｂが形成されている。すなわち、膨張チューブ３がＯＦケーブルＣに巻き付けられた状態で押圧カバー４を装着した際に、バルブ３１に対向する位置に露出孔４１ｂが形成され、図１（ｄ）に示すように、露出孔４１ｂを介してバルブ３１が押圧カバー４外に突出し、バルブ３１から空気注入ができるようになっている。   Furthermore, the pressing cover 4 is made of a material having sufficient strength and rigidity to press the expanded tube 3 as described above and having an insulating property. The upper cover 41 is formed with an exposure hole (exposed portion) 41b that exposes the valve 31 of the expansion tube 3 to the outside. That is, when the pressing cover 4 is mounted in a state where the expansion tube 3 is wound around the OF cable C, an exposure hole 41b is formed at a position facing the valve 31, and as shown in FIG. The valve 31 protrudes outside the pressing cover 4 through 41b, and air can be injected from the valve 31.

次に、このような構成のＯＦケーブル補修装置１によるＯＦケーブル補修方法などについて説明する。ここで、ＯＦケーブルＣは管路Ｔ内に配設されているものとする。   Next, an OF cable repairing method and the like by the OF cable repairing apparatus 1 having such a configuration will be described. Here, it is assumed that the OF cable C is disposed in the pipe line T.

まず、図５に示すように、ＯＦケーブルＣの漏油箇所Ｃ１周辺に対向する管路Ｔの部分を切り取り、作業窓Ｔ１を形成する。ここで、作業窓Ｔ１の大きさは、ＯＦケーブル補修装置１つまり押圧カバー４を管路Ｔ内に挿入でき、かつ配設作業（補修作業）が行える大きさとする。   First, as shown in FIG. 5, the portion of the pipe line T facing the periphery of the oil leakage point C1 of the OF cable C is cut out to form a work window T1. Here, the size of the work window T1 is set such that the OF cable repairing device 1, that is, the pressing cover 4, can be inserted into the pipe line T and the placement work (repair work) can be performed.

次に、接着ステップとして、図１（ａ）に示すＯＦケーブルＣの漏油箇所Ｃ１に対して、図１（ｂ）に示すように、接着テープ２を貼り付けて漏油を抑える。続いて、巻き付けステップとして、図１（ｃ）に示すように、接着テープ２を含むＯＦケーブルＣの外周面に膨張チューブ３を巻き付ける。この際、膨張チューブ３には、空気を注入せず、また、巻き付けた膨張チューブ３の中央部に漏油箇所Ｃ１が位置するように、膨張チューブ３を隙間なく巻き付ける。   Next, as an adhesion step, as shown in FIG. 1B, the adhesive tape 2 is applied to the oil leakage location C1 of the OF cable C shown in FIG. Subsequently, as the winding step, the expansion tube 3 is wound around the outer peripheral surface of the OF cable C including the adhesive tape 2 as shown in FIG. At this time, air is not injected into the expansion tube 3, and the expansion tube 3 is wound without a gap so that the oil leakage location C <b> 1 is located at the center of the wound expansion tube 3.

続いて、装着ステップとして、図１（ｄ）に示すように、膨張チューブ３を覆うように押圧カバー４を装着する。すなわち、上カバー４１と下カバー４２との間に膨張チューブ３が位置するようにし、かつ、バルブ３１を露出孔４１ｂに挿入させ、上・下カバー４１、４２が閉じて、フック４４を被フック部に係止する。これにより、押圧カバー４の収容空間Ｓ内に膨張チューブ３が収容され、側壁４１ａ、４２ａの開放端縁（挿入孔４ａの周縁）がＯＦケーブルＣに接触した状態となる。   Subsequently, as a mounting step, as shown in FIG. 1 (d), the pressing cover 4 is mounted so as to cover the expansion tube 3. That is, the expansion tube 3 is positioned between the upper cover 41 and the lower cover 42, the valve 31 is inserted into the exposure hole 41b, the upper and lower covers 41, 42 are closed, and the hook 44 is hooked. Lock to the part. Thereby, the expansion tube 3 is accommodated in the accommodation space S of the press cover 4, and the open end edges (peripheries of the insertion holes 4a) of the side walls 41a and 42a are in contact with the OF cable C.

この状態で、注入ステップとして、図１（ｅ）に示すように、バルブ３１から膨張チューブ３に空気を注入して膨張チューブ３を膨張させることで、押圧カバー４で膨張チューブ３を押圧して、膨張チューブ３をＯＦケーブルＣの外周面に密着させる。つまり、膨張チューブ３が膨張すると、膨張チューブ３が押圧カバー４の内周壁で押圧されながら収容空間Ｓ内に隙間なく満たされ、膨張チューブ３がＯＦケーブルＣの外周面に密着する。このとき、注入圧・充填圧を所定の圧力に設定することで、膨張チューブ３がＯＦケーブルＣの外周面に所定圧（油の流出を抑止・防止可能な圧力）で隙間なく密着する。   In this state, as an injection step, as shown in FIG. 1 (e), air is injected from the valve 31 into the expansion tube 3 to expand the expansion tube 3, thereby pressing the expansion tube 3 with the press cover 4. The expansion tube 3 is brought into close contact with the outer peripheral surface of the OF cable C. In other words, when the expansion tube 3 expands, the expansion tube 3 is pressed by the inner peripheral wall of the pressing cover 4 while filling the accommodation space S without a gap, and the expansion tube 3 comes into close contact with the outer peripheral surface of the OF cable C. At this time, by setting the injection pressure / filling pressure to a predetermined pressure, the expansion tube 3 comes into close contact with the outer peripheral surface of the OF cable C with a predetermined pressure (a pressure at which oil outflow can be suppressed / prevented) without a gap.

次に、注入を止めてバルブ３１に栓を取り付け、押圧カバー４の両側壁４１ａ、４２ａとＯＦケーブルＣの外周面との接触部に、充填剤を塗設する。つまり、挿入孔４ａの周縁とＯＦケーブルＣとの接触ラインに沿って、エポキシ樹脂などを塗り込む。このようにこの実施の形態では、側壁４１ａ、４２ａとＯＦケーブルＣとの接触部に充填剤を塗設することで、間接的に、膨張チューブ３とＯＦケーブルＣとの接触部に充填剤を塗設する、ものとしている。これに対して、両側壁４１ａ、４２ａを有しない場合や、挿入孔４ａがＯＦケーブルＣよりも大きい場合には、膨張チューブ３とＯＦケーブルＣとの接触部・隙間に直接、充填剤を塗設する。つまり、膨張チューブ３の両端部から油が外部に流出するのを、充填剤を塗設することで防止できればよい。   Next, the injection is stopped and a stopper is attached to the valve 31, and a filler is applied to the contact portion between the side walls 41 a and 42 a of the pressing cover 4 and the outer peripheral surface of the OF cable C. That is, an epoxy resin or the like is applied along the contact line between the peripheral edge of the insertion hole 4a and the OF cable C. Thus, in this embodiment, the filler is indirectly applied to the contact portion between the expansion tube 3 and the OF cable C by applying the filler to the contact portion between the side walls 41a, 42a and the OF cable C. It is supposed to be painted. On the other hand, when the side walls 41a and 42a are not provided, or when the insertion hole 4a is larger than the OF cable C, a filler is directly applied to the contact portion / gap between the expansion tube 3 and the OF cable C. Set up. That is, it is only necessary to prevent the oil from flowing out from both ends of the expansion tube 3 by coating the filler.

これにより、ＯＦケーブル補修装置１の取り付けおよび仮補修作業が終了し、その後、管路Ｔの作業窓Ｔ１に切り取った管路片などを接合して、作業窓Ｔ１を埋め戻す。一方、本補修などに際してＯＦケーブル補修装置１を取り外す場合には、作業窓Ｔ１を開けて、充填剤を除去し、バルブ３１の栓を抜いて膨張チューブ３から空気を抜き取る。次に、押圧カバー４を外し、膨張チューブ３を取り除くものである。   Thereby, the attachment of the OF cable repairing apparatus 1 and the temporary repairing work are completed, and then the work piece T1 is joined to the work window T1 of the pipe T, and the work window T1 is refilled. On the other hand, when the OF cable repairing apparatus 1 is removed during this repair or the like, the work window T1 is opened, the filler is removed, the valve 31 is unplugged, and air is extracted from the expansion tube 3. Next, the pressing cover 4 is removed, and the expansion tube 3 is removed.

以上のように、このＯＦケーブル補修装置１およびＯＦケーブル補修方法によれば、ＯＦケーブルＣに巻かれた膨張チューブ３が膨張することで、膨張チューブ３がＯＦケーブルＣの外周面に所定圧で隙間なく密着し、油の外部への漏出が防止・抑止される。しかも、押圧カバー４の両端部に側壁４１ａ、４２ａが設けられているため、膨張チューブ３が押圧カバー４から突出しない。この結果、膨張チューブ３が押圧カバー４内で適正に膨張し、膨張チューブ３がＯＦケーブルＣの外周面に隙間なく適正に（所定圧で）密着して、油の外部への漏出をより防止・抑止することができる。さらに、押圧カバー４の側壁４１ａ、４２ａとＯＦケーブルＣとの接触部に充填剤が塗設されているため、接触部（隙間）から油が外部へ漏出するのをより防止・抑止することができる。   As described above, according to the OF cable repairing apparatus 1 and the OF cable repairing method, the expansion tube 3 wound around the OF cable C is expanded, so that the expansion tube 3 is applied to the outer peripheral surface of the OF cable C at a predetermined pressure. It adheres without gaps and prevents or prevents leakage of oil to the outside. Moreover, since the side walls 41 a and 42 a are provided at both ends of the press cover 4, the expansion tube 3 does not protrude from the press cover 4. As a result, the expansion tube 3 properly expands in the pressure cover 4, and the expansion tube 3 is properly adhered to the outer peripheral surface of the OF cable C without any gap (with a predetermined pressure), thereby further preventing leakage of oil to the outside.・ Can be deterred. Furthermore, since the filler is applied to the contact portion between the side walls 41a, 42a of the press cover 4 and the OF cable C, it is possible to further prevent / suppress oil from leaking to the outside from the contact portion (gap). it can.

また、膨張チューブ３には常時空気圧がかかっているため、ＯＦケーブルＣが外気温度などによって膨張、収縮しても、これに従って膨張チューブ３も収縮、膨張し、膨張チューブ３とＯＦケーブルＣとの密着性が維持される。つまり、油の外部への漏出を常に防止・抑止することができる。   In addition, since air pressure is constantly applied to the expansion tube 3, even if the OF cable C expands and contracts due to the outside air temperature or the like, the expansion tube 3 also contracts and expands accordingly, and the expansion tube 3 and the OF cable C are connected to each other. Adhesion is maintained. That is, leakage of oil to the outside can always be prevented / suppressed.

一方、接着テープ２の貼り付けや、膨張チューブ３の巻き付け、膨張チューブ３への空気の注入などは、誰でも一人で容易に行える行為であり、特殊な技能や経験などを必要とせず、ＯＦケーブルＣの漏油箇所を適正かつ容易、迅速に補修することができる。また、このような作業には大きなスペースを要せず、管路Ｔ内で行える。このため、管路Ｔを切断して管路ＴからＯＦケーブルＣを抜き出し、大きな作業スペースを確保する必要がなく、上記のように作業窓Ｔ１を形成すればよい。この結果、補修作業後の管路Ｔの復旧も、作業窓Ｔ１を埋め戻すだけでよいため、作業が容易で、迅速に行える。   On the other hand, the application of the adhesive tape 2, the winding of the expansion tube 3, the injection of air into the expansion tube 3, etc. are actions that can be easily performed by any one person and do not require special skills or experience. The oil leakage point of the cable C can be repaired appropriately, easily and quickly. In addition, such work does not require a large space and can be performed in the pipe T. For this reason, it is not necessary to cut the pipe line T and extract the OF cable C from the pipe line T to secure a large work space, and the work window T1 may be formed as described above. As a result, the restoration of the pipe line T after the repair work can be performed easily and quickly because it is only necessary to refill the work window T1.

さらに、押圧カバー４の露出部４ｂを介してバルブ３１が外部に露出されるため、膨張チューブ３を押圧カバー４で覆った後においても、バルブ３１から膨張チューブ３内に空気を容易に注入することができる。また、膨張チューブ３から空気を抜いて押圧カバー４を外し、膨張チューブ３を取り除くだけで、本装置１をＯＦケーブルＣから容易に取り外すことができ、しかも、本装置１を何度でも使い回しすることができる。   Further, since the valve 31 is exposed to the outside through the exposed portion 4 b of the press cover 4, air is easily injected into the expansion tube 3 from the valve 31 even after the expansion tube 3 is covered with the press cover 4. be able to. Further, the apparatus 1 can be easily detached from the OF cable C by simply removing the air from the expansion tube 3 and removing the pressure cover 4 and removing the expansion tube 3, and the apparatus 1 can be used over and over again. can do.

以上、この発明の実施の形態について説明したが、具体的な構成は、上記の実施の形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても、この発明に含まれる。例えば、上記の実施の形態では、押圧カバー４を開閉自在としているが、上カバー４１と下カバー４２とを分離、接合自在な構造としてもよい。また、膨張チューブ３の断面形状を横長の偏平形（帯状）とし、膨張した際の膨張チューブ３とＯＦケーブルＣとの接触面を大きく確保するようにしてもよい。   Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the pressing cover 4 can be opened and closed, but the upper cover 41 and the lower cover 42 may be separated and joined together. Moreover, the cross-sectional shape of the expansion tube 3 may be a horizontally long flat shape (band shape), and a large contact surface between the expansion tube 3 and the OF cable C when expanded may be secured.

また、押圧カバー４が筒状で真っ直ぐ延びているが、補修対象箇所のＯＦケーブルＣの形状・曲率などに応じて、押圧カバーの軸心が湾曲したものであってもよい。あるいは、真っ直ぐで短い押圧カバーを複数継手で接続し、各押圧カバーが相互に回動することで、ＯＦケーブルＣの形状・曲率などに応じて押圧カバーを装着できるようにしてもよい。   Moreover, although the press cover 4 is cylindrical and extends straight, the axis of the press cover may be curved in accordance with the shape and curvature of the OF cable C at the repair target location. Alternatively, a straight and short pressing cover may be connected by a plurality of joints, and the pressing covers may be rotated so that the pressing cover can be mounted according to the shape and curvature of the OF cable C.

１ ＯＦケーブル補修装置
２ 接着テープ
３ 膨張チューブ
３１ バルブ（気体注入部）
４ 押圧カバー
４１ 上カバー
４１ａ 側壁（突出防止部）
４１ｂ 露出孔（露出部）
４２ 下カバー
４２ａ 側壁（突出防止部）
４４ フック
Ｃ ＯＦケーブル
Ｃ１ 漏油箇所
Ｔ 管路
Ｔ１ 作業窓
1 OF cable repair device 2 Adhesive tape 3 Expansion tube 31 Valve (gas injection part)
4 Pressing cover 41 Upper cover 41a Side wall (protrusion prevention part)
41b Exposed hole (exposed part)
42 Lower cover 42a Side wall (protrusion prevention part)
44 Hook C OF cable C1 Oil leakage point T Pipe line T1 Work window

Claims (5)

内部に油が注入されたＯＦケーブルの外周面に形成された漏油箇所を補修するためのＯＦケーブル補修装置であって、
前記漏油箇所に貼り付けられて漏油を抑える接着テープと、
前記接着テープを含むＯＦケーブルの外周面に巻き付けられ、内部に気体が注入されることで膨張する膨張チューブと、
前記ＯＦケーブルの外周面に巻き付けられた膨張チューブを着脱自在に覆い、気体が注入されることで膨張した膨張チューブを押圧して、前記膨張チューブを前記ＯＦケーブルの外周面に密着させる押圧カバーと、
を備えることを特徴とするＯＦケーブル補修装置。 An OF cable repairing device for repairing an oil leakage point formed on the outer peripheral surface of an OF cable in which oil is injected.
An adhesive tape that is affixed to the oil leakage location and suppresses oil leakage;
An expansion tube wound around the outer peripheral surface of the OF cable including the adhesive tape and inflated by injecting gas into the inside;
A pressing cover that detachably covers the expansion tube wound around the outer peripheral surface of the OF cable, presses the expansion tube expanded by injecting gas, and closely contacts the expansion tube with the outer peripheral surface of the OF cable; ,
An OF cable repairing device characterized by comprising: 前記膨張チューブに設けられた気体注入部を外部に露出させる露出部が、前記押圧カバーに設けられている、
ことを特徴とする請求項１に記載のＯＦケーブル補修装置。 An exposed portion that exposes the gas injection portion provided in the expansion tube to the outside is provided in the pressing cover.
The OF cable repair device according to claim 1. 前記押圧カバーが筒状で、その両端部に、膨張した前記膨張チューブが前記押圧カバーから突出するのを防止する突出防止部が設けられている、
ことを特徴とする請求項１または２のいずれか１項に記載のＯＦケーブル補修装置。 The press cover is cylindrical, and at both ends thereof, a protrusion preventing portion for preventing the expanded expansion tube from protruding from the press cover is provided.
The OF cable repairing apparatus according to claim 1, wherein the OF cable repairing apparatus is a repairing apparatus. 内部に油が注入されたＯＦケーブルの外周面に形成された漏油箇所を補修するＯＦケーブル補修方法であって、
接着テープを前記漏油箇所に貼り付けて漏油を抑え、
前記接着テープを含むＯＦケーブルの外周面に膨張チューブを巻き付け、
前記膨張チューブを覆うように押圧カバーを装着し、
この状態で、前記膨張チューブに気体を注入して前記膨張チューブを膨張させることで、前記押圧カバーで前記膨張チューブを押圧して、前記膨張チューブを前記ＯＦケーブルの外周面に密着させる、
ことを特徴とするＯＦケーブル補修方法。 An OF cable repair method for repairing an oil leakage spot formed on the outer peripheral surface of an OF cable in which oil is injected.
Adhesive tape is attached to the oil leakage location to suppress oil leakage,
Wrap an expansion tube around the outer peripheral surface of the OF cable including the adhesive tape,
Attach a pressure cover to cover the expansion tube,
In this state, by injecting gas into the expansion tube to expand the expansion tube, the expansion tube is pressed with the pressing cover, and the expansion tube is brought into close contact with the outer peripheral surface of the OF cable.
OF cable repair method characterized by this. 前記膨張チューブに気体を注入した後に、前記押圧カバーの両端部において前記膨張チューブと前記ＯＦケーブルの外周面との接触部に、充填剤を塗設する、
ことを特徴とする請求項４に記載のＯＦケーブル補修方法。
After injecting gas into the expansion tube, a filler is applied to the contact portion between the expansion tube and the outer peripheral surface of the OF cable at both ends of the pressing cover.
The OF cable repair method according to claim 4.
JP2011205481A 2011-09-21 2011-09-21 OF cable repair device and repair method Expired - Fee Related JP5358640B2 (en)

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