JP2015033259A - Gas leak repair method of communication line - Google Patents

Gas leak repair method of communication line Download PDF

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JP2015033259A
JP2015033259A JP2013162452A JP2013162452A JP2015033259A JP 2015033259 A JP2015033259 A JP 2015033259A JP 2013162452 A JP2013162452 A JP 2013162452A JP 2013162452 A JP2013162452 A JP 2013162452A JP 2015033259 A JP2015033259 A JP 2015033259A
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gas
communication line
gas valve
gas leak
valve
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政徳 山中
Masanori Yamanaka
政徳 山中
久比古 生川
Hisahiko Ubukawa
久比古 生川
大杉　哲也
Tetsuya Osugi
哲也 大杉
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Nippon Tsushin Denzai KK
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Abstract

PROBLEM TO BE SOLVED: To provide a gas leak repair method of communication line capable of reliably repairing a gas leak point in a short time, without stopping a gas flow in a cable jacket of the communication line.SOLUTION: A gas leak repair method of communication line includes a step for bringing a gas valve 5 having a base 5a provided with a through hole 5b into a state that the ventilation can be made, and arranging the base 5a at a gas leak point of a communication line 1, a step for fixing the base 5a tightly to the communication line 1 with a gas leak sealing member 8 while keeping the state that the ventilation can be made with the gas valve 5, and a step for bringing the gas valve 5 into a state that the ventilation cannot be made by closing it, following to the step for fixing the base 5a tightly.

Description

本発明は、通信用線路のガス漏れ補修方法に関する。   The present invention relates to a gas leakage repair method for communication lines.

光通信ケーブルなどの通信用線路は、乾燥空気、窒素等のガスを加圧封入することによって保守されているものがある。特許文献１には、ケーブル外被に傷ができた箇所を見つけるための技術として、地下に布設される通信ケーブル内に加圧した乾燥ガスを連続供給しつつ、ケーブル内の心線を利用してケーブルの電気特性をモニタし、電気特性の異常値を検出した後、高圧のガスを送出してケーブル内への水の浸入を阻止することが開示されている。非特許文献１には、通信ケーブルのガス漏れ箇所に直接補修テープを巻き付ける技術が開示されている。   Some communication lines such as optical communication cables are maintained by pressurizing and sealing a gas such as dry air or nitrogen. In Patent Document 1, as a technique for finding a spot where a cable jacket has been damaged, a pressurized dry gas is continuously supplied into a communication cable installed underground, and a core wire in the cable is used. It is disclosed that after monitoring the electrical characteristics of the cable and detecting an abnormal value of the electrical characteristics, a high-pressure gas is sent to prevent water from entering the cable. Non-Patent Document 1 discloses a technique for winding a repair tape directly around a gas leak point of a communication cable.

特開昭６３−１９８５２０号公報JP-A 63-198520

３M通信工事製品カタログ ３４頁 ３Ｍ“アーマーキャスト”ガス漏洩補修テープ 住友スリーエム株式会社通信マーケット事業部発行 ２０１２年４月3M Communication Construction Product Catalog 34 pages 3M “Armorcast” Gas Leakage Repair Tape Published by Sumitomo 3M Limited Communication Market Division April 2012

従来、通信用線路のケーブル外被に傷がつくなどしてガス漏れ箇所が生じた場合、ケーブル外被内部に通流しているガスを停止させずに、例えば非特許文献１に記載されているようなガス漏洩補修テープを使用して補修作業を行っていた。このガス漏洩補修テープを使用した補修作業では、噴出するガスに抗して直接ガス漏洩補修テープを多重に巻き付ける作業を行うので、作業が難しく適切な補修ができない虞がある。また、ガス漏洩補修テープが硬化するまで時間がかかり、作業時間が長くなる虞もある。   Conventionally, for example, Non-Patent Document 1 describes a case where a gas leak location occurs due to damage to the cable jacket of a communication line, without stopping the gas flowing through the cable jacket. The repair work was done using such a gas leak repair tape. In the repair work using this gas leak repair tape, the work of winding the gas leak repair tapes in multiple layers against the jetted gas is performed, so that the work is difficult and proper repair may not be possible. Moreover, it takes time until the gas leakage repair tape is cured, and there is a possibility that the working time becomes longer.

そこで、本発明の目的は、通信用線路のケーブル外被内部に通流しているガスを停止させずに、確実にガス漏れ箇所を補修し、この補修作業を短時間で行うことができる通信用線路のガス漏れ補修方法を提供することにある。   Therefore, an object of the present invention is for communication that can repair a gas leak point reliably without stopping the gas flowing inside the cable jacket of the communication line, and can perform this repair work in a short time. An object of the present invention is to provide a gas leak repair method for a railway.

上記課題を解決することのできる本発明の通信用線路のガス漏れ補修方法は、貫通孔を設けたベース部を有するガスバルブを通気可能な状態とし、通信用線路のガス漏れ箇所に前記ベース部を配置する工程と、
前記ガスバルブを通気可能な状態としたまま、前記通信用線路に前記ベース部をガス漏れ封止部材で密着固定する工程と、
前記密着固定する工程の後、前記ガスバルブを閉じて通気不可能な状態とする工程と、
を有する。 In the communication line gas leak repairing method of the present invention that can solve the above-mentioned problem, the gas valve having a base part provided with a through hole is made to be in a state in which ventilation is possible, and the base part is placed at the gas leak point of the communication line. Arranging, and
A step of closely fixing the base portion to the communication line with a gas leak sealing member while keeping the gas valve in a ventable state;
After the step of tightly fixing, the step of closing the gas valve and making it impossible to vent;
Have

本発明によれば、通信用線路のガス漏れ箇所を内部に通流しているガスを停止させずに、確実にガス漏れ箇所を補修し、この補修作業を短時間で行うことができる。   According to the present invention, it is possible to reliably repair a gas leak location without stopping the gas flowing through the gas leak location of the communication line, and to perform this repair work in a short time.

本発明の第１の実施形態に係る通信用線路のガス漏れ補修方法の補修前の説明図であり、ガス漏れ箇所とガス漏れ補修用の各部材を示す斜視図である。It is explanatory drawing before the repair of the gas leak repair method of the communication line which concerns on the 1st Embodiment of this invention, and is a perspective view which shows each member for a gas leak location and gas leak repair. ガスバルブとキャップの斜視図である。It is a perspective view of a gas valve and a cap. 本発明の第１の実施形態に係る通信用線路のガス漏れ補修方法の補修中の説明図であり、パッチを密着固定した状態の斜視図である。It is explanatory drawing under repair of the gas leak repair method of the communication line which concerns on the 1st Embodiment of this invention, and is a perspective view of the state which fixed the patch closely. 本発明の第１の実施形態に係る通信用線路のガス漏れ補修方法の補修後の説明図であり、ガスバルブにキャップを閉めた状態の斜視図である。It is explanatory drawing after the repair of the gas leak repair method of the communication line which concerns on the 1st Embodiment of this invention, and is a perspective view of the state which closed the cap to the gas valve. 本発明の第２の実施形態に係る通信用線路のガス漏れ補修方法の補修前の説明図であり、ガス漏れ箇所とガス漏れ補修用の各部材を示す斜視図である。It is explanatory drawing before the repair of the gas leak repair method of the communication line which concerns on the 2nd Embodiment of this invention, and is a perspective view which shows each member for a gas leak location and gas leak repair. 熱収縮シートをガスバルブへ巻き付ける工程の説明図であり、（ａ）は巻き付ける前の図、（ｂ）は巻き付ける途中の図である。It is explanatory drawing of the process of winding a heat-shrink sheet | seat around a gas valve, (a) is a figure before winding, (b) is a figure in the middle of winding. 本発明の第２の実施形態に係る通信用線路のガス漏れ補修方法の補修後の説明図であり、熱収縮シートを密着固定し、ガスバルブにキャップを閉めた状態の斜視図である。It is explanatory drawing after the repair of the gas leak repair method of the communication line which concerns on the 2nd Embodiment of this invention, and is a perspective view of the state which fixed the heat shrink sheet | seat tightly and closed the cap to the gas valve.

［本願発明の実施形態の説明］
本願発明の実施形態に係る通信用線路のガス漏れ補修方法は、
（１） 貫通孔を設けたベース部を有するガスバルブを通気可能な状態とし、通信用線路のガス漏れ箇所に前記ベース部を配置する工程と、
前記ガスバルブを通気可能な状態としたまま、前記通信用線路に前記ベース部をガス漏れ封止部材で密着固定する工程と、
前記密着固定する工程の後、前記ガスバルブを閉じて通気不可能な状態とする工程と、
を有する。
このように、ガスバルブを通信用線路のガス漏れ箇所に配置し、漏れているガスをガスバルブ内に通気させながら補修を行う。これにより、ガス漏れ封止部材を通信用線路に密着固定させるときに、噴出するガスに抗して作業を行う必要が無く、作業が容易にできる。また、ガス漏れ封止部材と通信用線路との間に噴出するガスの圧力がほとんど加わらないため、確実かつ短時間で密着固定ができる。
従って、通信用線路のガス漏れ箇所をケーブル外被等の内部に通流しているガスを停止させずに、確実にガス漏れ箇所を補修し、この補修作業を短時間で行うことができる。 [Description of Embodiment of Present Invention]
A gas leak repair method for a communication line according to an embodiment of the present invention is as follows.
(1) A step of placing a gas valve having a base portion provided with a through hole in a breathable state and disposing the base portion at a gas leak location of a communication line;
A step of closely fixing the base portion to the communication line with a gas leak sealing member while keeping the gas valve in a ventable state;
After the step of tightly fixing, the step of closing the gas valve and making it impossible to vent;
Have
In this way, the gas valve is arranged at the gas leak location of the communication line, and repair is performed while the leaking gas is vented into the gas valve. Thereby, when the gas leak sealing member is fixedly fixed to the communication line, it is not necessary to work against the gas to be ejected, and the work can be facilitated. In addition, since the pressure of the gas ejected between the gas leakage sealing member and the communication line is hardly applied, the contact and fixation can be performed reliably and in a short time.
Therefore, the gas leaking portion of the communication line can be reliably repaired without stopping the gas flowing through the cable jacket or the like, and this repair work can be performed in a short time.

（２） 前記ベース部を配置する工程の前に、予め前記ガス漏れ封止部材を前記ガスバルブに取り付けておく。
予めガス漏れ封止部材をガスバルブに取り付けておくことにより、補修現場における作業工程を少なくすることができ、作業時間を短縮できる。 (2) Prior to the step of arranging the base portion, the gas leak sealing member is attached to the gas valve in advance.
By attaching the gas leakage sealing member to the gas valve in advance, the work process at the repair site can be reduced, and the work time can be shortened.

（３） 前記ガスバルブの取付穴を有するパッチを前記ガス漏れ封止部材として用い、前記パッチの取付穴に前記ガスバルブを通すように取り付けて、前記通信用線路に前記ベース部を前記パッチで接着して密着固定する。
ガス漏れ封止部材としてパッチという簡単な部材を用いるので、従来の多重に巻きつけるガス漏洩補修テープに比べて部材の量が少なく、コストを抑えることができる。 (3) A patch having a mounting hole for the gas valve is used as the gas leakage sealing member, the gas valve is attached to the mounting hole of the patch, and the base portion is bonded to the communication line with the patch. And fix tightly.
Since a simple member called a patch is used as the gas leakage sealing member, the amount of the member is smaller than that of a conventional gas leakage repair tape wound in multiple layers, and the cost can be reduced.

（４） 前記ガスバルブの取付穴を有する熱収縮シートを前記ガス漏れ封止部材として用い、前記熱収縮シートの取付穴に前記ガスバルブを通すように取り付けて、前記熱収縮シートを加熱して収縮させ、前記通信用線路に前記ベース部を密着固定する。
ガス漏れ封止部材として熱収縮シートを用いるので、加熱すればすぐに収縮し、短時間で通信用線路に密着固定できる。また、従来の多重に巻きつけるガス漏洩補修テープに比べて部材の量が少なく、コストを抑えることができる。 (4) Using a heat shrink sheet having a gas valve attachment hole as the gas leakage sealing member, attaching the gas valve through the heat shrink sheet attachment hole, and heating and shrinking the heat shrink sheet. The base portion is closely fixed to the communication line.
Since a heat-shrinkable sheet is used as the gas leakage sealing member, the heat-shrinkable sheet shrinks as soon as it is heated and can be tightly fixed to the communication line in a short time. In addition, the amount of members is smaller than that of a conventional gas leakage repair tape wound in multiple layers, and the cost can be reduced.

［本願発明の実施形態の詳細］
本発明の実施形態に係る通信用線路のガス漏れ補修方法を、以下に図面を参照しつつ説明する。
なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 [Details of the embodiment of the present invention]
A communication line gas leakage repair method according to an embodiment of the present invention will be described below with reference to the drawings.
In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.

［第１の実施形態］
本発明の第１の実施形態に係る通信用線路のガス漏れ補修方法を説明する。第１の実施形態は、ガス漏れ封止部材としてパッチを使用する例である。 [First Embodiment]
A gas leakage repair method for a communication line according to the first embodiment of the present invention will be described. 1st Embodiment is an example which uses a patch as a gas leak sealing member.

（通信用線路および第１の実施形態のガス漏れ補修用の各部材）
光通信ケーブルなどの通信用線路は、乾燥空気、窒素等のガスを加圧封入することによって保守されているものがある。このような通信用線路において、ケーブル外被に傷がつくなどしてガス漏れ箇所が生じ場合がある。ガス漏れ箇所は、特にケーブル接続部の近傍で発生するケースが多い。このため図１では、通信用線路１におけるケーブル接続部とその近傍を図示している。 (Communication line and each member for gas leak repair of the first embodiment)
Some communication lines such as optical communication cables are maintained by pressurizing and sealing a gas such as dry air or nitrogen. In such a communication line, there may be a case where a gas leakage portion is generated due to damage to the cable jacket. There are many cases where gas leaks occur particularly in the vicinity of the cable connection portion. For this reason, in FIG. 1, the cable connection part in the communication track | line 1 and its vicinity are shown in figure.

図１には、通信用線路１のケーブル接続部とその近傍である、通信ケーブル２と、補助鉛管３と、主鉛管４とが示されている。通信用線路１では、主鉛管４の中に通信ケーブル２同士の接続部が設けられている。また、主鉛管４から通信ケーブル２を導出する部分を保護するための補助鉛管３が設けられている。
また、図１には説明のために、通信用線路１に対するガス漏れ補修用の各部材として、ガスバルブ５と、キャップ６と、Ｏリング７と、パッチ８とが示されている。 In FIG. 1, a communication cable 2, an auxiliary lead pipe 3, and a main lead pipe 4, which are in the vicinity of the cable connection portion of the communication line 1, are shown. In the communication line 1, a connection portion between the communication cables 2 is provided in the main lead pipe 4. In addition, an auxiliary lead pipe 3 is provided for protecting a portion where the communication cable 2 is led out from the main lead pipe 4.
For the sake of explanation, FIG. 1 shows a gas valve 5, a cap 6, an O-ring 7, and a patch 8 as members for repairing gas leakage with respect to the communication line 1.

上記ガス漏れ補修用の各部材のうちのガスバルブ５は、図２に示すように、ベース部５ａと、貫通孔５ｂと、弁部５ｃと、螺合部５ｄとを有している。
次に、このガスバルブ５の各部について説明する。ベース部５ａは、通信用線路１の通信ケーブル２、補助鉛管３などのガス漏れ箇所にその底面を当接して配置可能なように構成されている。貫通孔５ｂは、ベース部５ａの底面から、弁部５ｃ、螺合部５ｄを貫通している。弁部５ｃは、ベース部５ａ側から螺合部５ｄ側へ通気可能で、逆方向には通気不可能な弁として機能する。螺合部５ｄは、キャップ６と螺合可能に構成されている。
ベース部５ａの底面には、ベース部５ａを通信用線路１上に固定するための接着剤または両面テープが設けられていてもよい。
なお、ガスバルブ５およびキャップ６は、例えば樹脂成型品を使用することで軽量且つ安価に製作できる。 As shown in FIG. 2, the gas valve 5 among the members for repairing gas leakage has a base portion 5a, a through hole 5b, a valve portion 5c, and a screwing portion 5d.
Next, each part of the gas valve 5 will be described. The base portion 5a is configured so that the bottom surface of the base portion 5a can be disposed in contact with a gas leak location such as the communication cable 2 and the auxiliary lead pipe 3 of the communication line 1. The through hole 5b penetrates the valve portion 5c and the screwing portion 5d from the bottom surface of the base portion 5a. The valve part 5c functions as a valve that can vent from the base part 5a side to the screwing part 5d side and cannot vent in the reverse direction. The screwing portion 5d is configured to be screwable with the cap 6.
An adhesive or a double-sided tape for fixing the base portion 5a on the communication line 1 may be provided on the bottom surface of the base portion 5a.
The gas valve 5 and the cap 6 can be manufactured at a low cost and at a low cost by using, for example, a resin molded product.

図１に示すＯリング７は、例えばゴム製のパッキンなどであり、キャップ６の底面（ガスバルブ５に当接する側の面）６ａとガスバルブ５との間に嵌め込み、キャップ６をガスバルブ５に螺合する際の密封部材として用いる。
パッチ８は、ガス漏れ封止部材の一例であり、片面に接着剤層を有していてもよい。また、パッチ８は、ガスバルブ５の弁部５ｃおよび螺合部５ｄを貫通可能な取付穴８ａを有している。なお、パッチ８は、柔軟性があり接着性が良い材質のものが望ましく、例えばプラスチックシートなどがよい。 The O-ring 7 shown in FIG. 1 is, for example, rubber packing, and is fitted between the bottom surface (the surface that contacts the gas valve 5) 6 a of the cap 6 and the gas valve 5, and the cap 6 is screwed to the gas valve 5. Used as a sealing member when
The patch 8 is an example of a gas leakage sealing member, and may have an adhesive layer on one side. The patch 8 has a mounting hole 8a that can penetrate the valve portion 5c and the screwing portion 5d of the gas valve 5. The patch 8 is preferably made of a material having flexibility and good adhesiveness, such as a plastic sheet.

（第１の実施形態のガス漏れ補修方法）
次に、第１の実施形態のガス漏れ補修方法について、図１から図４を参照しつつ詳細に説明する。
図１の通信用線路１のガス漏れが発生していると思われる部分に石鹸水を塗布するなどして、ガス漏れ箇所の正確な位置を特定する。位置が特定できたら、ガス漏れ箇所の周辺の汚れを除去する。
図１および図２に示すように、ガスバルブ５は、予めキャップ６を外し、通気可能な状態にしておく。パッチ８が接着剤層を有していない場合には、パッチ８の裏面（通信用線路１に貼り付ける側の面）に接着剤を塗布する。その後、取付穴８ａにガスバルブ５の弁部５ｃおよび螺合部５ｄを通すように取り付けて、パッチ８をベース部５ａに貼り付ける。 (Gas leak repair method of the first embodiment)
Next, the gas leak repair method of the first embodiment will be described in detail with reference to FIGS.
The exact position of the gas leaking part is specified by applying soapy water to the part where the gas leaking of the communication line 1 in FIG. Once the position is identified, remove the dirt around the gas leak.
As shown in FIGS. 1 and 2, the gas valve 5 is previously in a state in which the cap 6 is removed to allow ventilation. If the patch 8 does not have an adhesive layer, the adhesive is applied to the back surface of the patch 8 (the surface to be attached to the communication line 1). Then, it attaches so that the valve part 5c and the screwing part 5d of the gas valve 5 may pass through the attachment hole 8a, and the patch 8 is affixed on the base part 5a.

次に、図３に示すように、パッチ８を貼り付けたガスバルブ５を、ベース部５ａの底面が通信用線路１のガス漏れ箇所（図３の例では、補助鉛管３から通信ケーブル２が露出する接合部分）に当接するように配置する。
なお、ベース部５ａの底面に接着剤を塗布しておけばベース部５ａを通信用線路１上に仮固定できる。
そして、接着剤が塗布されたパッチ８の底面を通信用線路１のガス漏れ箇所の周囲に密着させて固定する。なお、この状態では、ガスバルブ５は通気可能であり、貫通孔５ｂからガスが漏れ続ける。 Next, as shown in FIG. 3, the bottom of the base part 5a is connected to the gas valve 5 to which the patch 8 is attached. The communication cable 2 is exposed from the auxiliary lead pipe 3 in the communication line 1 in the bottom surface of the communication line 1 as shown in FIG. To be in contact with the joining portion).
The base portion 5a can be temporarily fixed on the communication line 1 by applying an adhesive to the bottom surface of the base portion 5a.
Then, the bottom surface of the patch 8 to which the adhesive is applied is brought into close contact with the periphery of the gas leakage portion of the communication line 1 and fixed. In this state, the gas valve 5 can be ventilated, and gas continues to leak from the through hole 5b.

パッチ８に塗布した接着剤が硬化し、パッチ８と通信用線路１との接着が完了したら、図４に示すように、Ｏリング７を嵌め込んだキャップ６をガスバルブ５の螺合部５ｄにねじ込む。これにより、ガスバルブ５が閉じて通気不可能な状態となり、貫通孔５ｂからのガス漏れが止まる。
最後に、ガス漏れ箇所の周辺に石鹸水を塗布するなどして、ガス漏れが無いことを確認する。 When the adhesive applied to the patch 8 is cured and the bonding between the patch 8 and the communication line 1 is completed, the cap 6 fitted with the O-ring 7 is attached to the screwing portion 5d of the gas valve 5 as shown in FIG. Screw in. As a result, the gas valve 5 is closed and cannot be vented, and gas leakage from the through hole 5b is stopped.
Finally, check that there is no gas leak by applying soapy water around the gas leak point.

第１の実施形態に係るガス漏れ補修方法によれば、ガスバルブ５を通信用線路１のガス漏れ箇所に配置し、漏れているガスをガスバルブ５内に通気させながら補修を行う。このため、パッチ８を通信用線路１に密着固定させるときに、噴出するガスに抗して作業を行う必要が無く作業が容易にできる。そして、パッチ８に塗布した接着剤が硬化して密着固定が完了するまでの間、パッチ８の接着面に噴出するガスの圧力がほとんど加わらないため、確実かつ短時間で密着固定ができる。   According to the gas leak repair method according to the first embodiment, the gas valve 5 is disposed at the gas leak point of the communication line 1 and repair is performed while the leaking gas is vented into the gas valve 5. For this reason, when the patch 8 is tightly fixed to the communication line 1, it is not necessary to work against the gas to be ejected, and the work can be facilitated. Then, until the adhesive applied to the patch 8 is cured and the contact fixing is completed, the pressure of the gas ejected to the adhesive surface of the patch 8 is hardly applied, so that the contact fixing can be performed reliably and in a short time.

また、予めパッチ８をガスバルブ５に取り付けておくことにより、補修現場における作業工程を少なくすることができ、作業時間を短縮できる。そして、ガス漏れ封止部材としてパッチ８という簡単な部材を用いるので、従来の多重に巻きつけるガス漏洩補修テープに比べて部材の量が少なく、コストを抑えることができる。
以上のように、第１の実施形態に係るガス漏れ補修方法によれば、通信用線路１のガス漏れ箇所を通信ケーブル２の外被内部に通流しているガスを停止させずに、確実にガス漏れ箇所を補修し、この補修作業を短時間で行うことができる。
なお、上記第１の実施形態では、パッチ８を予めガスバルブ５に取り付けているが、先にガスバルブ５を通信用線路１に配置して、その後にパッチ８をガスバルブ５に通して接着してもよい。 Further, by attaching the patch 8 to the gas valve 5 in advance, the work process at the repair site can be reduced and the work time can be shortened. And since the simple member called the patch 8 is used as a gas leak sealing member, compared with the conventional gas leak repair tape wound in multiple, the amount of members is small and it can hold down cost.
As described above, according to the gas leakage repair method according to the first embodiment, the gas flowing through the outer portion of the communication cable 2 through the gas leakage portion of the communication line 1 is reliably stopped without stopping. The gas leak point can be repaired and this repair work can be performed in a short time.
In the first embodiment, the patch 8 is attached to the gas valve 5 in advance. However, the gas valve 5 may be disposed on the communication line 1 first, and then the patch 8 may be passed through the gas valve 5 and bonded. Good.

［第２の実施形態］
次に、本発明の第２の実施形態に係る通信用線路のガス漏れ補修方法を説明する。第２の実施形態は、ガス漏れ封止部材として熱収縮シートを使用する例である。なお、第１の実施形態と共通する部分は、同じ符号を付けてその詳細な説明は省略する。 [Second Embodiment]
Next, a method for repairing a gas leak in a communication line according to the second embodiment of the present invention will be described. 2nd Embodiment is an example which uses a heat-shrink sheet | seat as a gas leak sealing member. In addition, the same code | symbol is attached | subjected to the part which is common in 1st Embodiment, and the detailed description is abbreviate | omitted.

（通信用線路および第２の実施形態のガス漏れ補修部材）
図５には、第１の実施形態と同様に、通信用線路１のケーブル接続部とその近傍の構成として、通信ケーブル２と、補助鉛管３と、鉛管４とが示されている。
また、図５には説明のために、通信用線路１に対するガス漏れ補修用の各部材として、ガスバルブ５と、キャップ６と、Ｏリング７と、熱収縮シート９とが示されている。 (Communication line and gas leakage repair member of the second embodiment)
As in the first embodiment, FIG. 5 shows a communication cable 2, an auxiliary lead tube 3, and a lead tube 4 as the configuration of the cable connection portion of the communication line 1 and the vicinity thereof.
For the sake of explanation, FIG. 5 shows a gas valve 5, a cap 6, an O-ring 7, and a heat-shrink sheet 9 as members for repairing gas leakage with respect to the communication line 1.

熱収縮シート９は、ガス漏れ封止部材の一例であり、ガスバルブ５の弁部５ｃおよび螺合部５ｄを貫通可能な取付穴９ａ，９ｂを有している。
なお、第２の実施形態では、ガス漏れ封止部材として熱収縮シート９を使用するので、ガスバルブ５およびキャップ６は、例えば金属など耐熱性のある材質のものであることが望ましい。
なお、熱収縮シート９は、通信用線路１に巻き付ける長手方向のみ収縮することが望ましい。 The heat-shrink sheet 9 is an example of a gas leakage sealing member, and has mounting holes 9 a and 9 b that can penetrate the valve portion 5 c and the screwing portion 5 d of the gas valve 5.
In the second embodiment, since the heat shrinkable sheet 9 is used as the gas leakage sealing member, it is desirable that the gas valve 5 and the cap 6 are made of a heat resistant material such as metal.
The heat shrinkable sheet 9 is desirably shrunk only in the longitudinal direction wound around the communication line 1.

（第２の実施形態のガス漏れ補修方法）
次に、第２の実施形態のガス漏れ補修方法について、図５から図７を参照しつつ詳細に説明する。
図５の通信用線路１のガス漏れが発生していると思われる部分に石鹸水を塗布するなどして、ガス漏れ箇所の正確な位置を特定する。位置が特定できたら、ガス漏れ箇所の周辺の汚れを除去する。
図５に示すように、ガスバルブ５は、予めキャップ６を外した状態にしておく。そして、ガスバルブ５のベース部５ａの底面には、通信用線路１に仮固定できるように両面テープを貼り付けておく。または、接着剤を塗布しておく。 (Gas leakage repair method of the second embodiment)
Next, the gas leak repair method of the second embodiment will be described in detail with reference to FIGS.
The exact position of the gas leaking part is specified by applying soapy water to the part where the gas leaking of the communication line 1 in FIG. Once the position is identified, remove the dirt around the gas leak.
As shown in FIG. 5, the gas valve 5 is in a state where the cap 6 is removed in advance. Then, a double-sided tape is attached to the bottom surface of the base portion 5 a of the gas valve 5 so as to be temporarily fixed to the communication line 1. Alternatively, an adhesive is applied.

次に、図６の（ａ）に示すように、ガスバルブ５を通信用線路１のガス漏れ箇所（図５の例では、補助鉛管３から通信ケーブル２が露出する接合部分）に、ベース部５ａの底面が当接するように配置する。このとき、ベース部５ａの底面には両面テープが貼られている（または、接着剤が塗布されている）ので、仮固定される。
そして、熱収縮シート９の一方の取付穴９ａに、ガスバルブ５の螺合部５ｄおよび弁部５ｃを通すように取り付ける。そして、図６の（ａ）の矢印Ａで示すように、通信用線路１に熱収縮シート９を巻き付ける。このように、熱収縮シート９を巻き付けるとき、Ｂ方向から見た平面図が、図６の（ｂ）である。
図６の（ｂ）に示すように、熱収縮シート９の一方の取付穴９ａをガスバルブ５に取り付けて、通信用線路１の補助鉛管３から通信ケーブル２が露出する部分に巻き付ける。そして、矢印Ｃで示すように、熱収縮シート９の他方の取付穴９ｂもガスバルブ５の螺合部５ｄおよび弁部５ｃを通すように取り付ける。このようにして、取付穴９ａ，９ｂからガスバルブ５が突出した状態で、通信用線路１に熱収縮シート９が巻き付けられる。この状態では、ガスバルブ５は通気可能であり、貫通孔５ｂからガスが漏れ続ける。 Next, as shown in FIG. 6 (a), the gas valve 5 is connected to the base portion 5a at the gas leak point of the communication line 1 (in the example of FIG. 5, the joint portion where the communication cable 2 is exposed from the auxiliary lead pipe 3). It arrange | positions so that the bottom face may contact | abut. At this time, since a double-sided tape is affixed to the bottom surface of the base portion 5a (or an adhesive is applied), it is temporarily fixed.
And it attaches so that the screwing part 5d and valve | bulb part 5c of the gas valve 5 may be passed through one attachment hole 9a of the heat shrink sheet | seat 9. As shown in FIG. Then, as indicated by an arrow A in FIG. 6A, the heat shrinkable sheet 9 is wound around the communication line 1. Thus, when winding the heat shrinkable sheet 9, the top view seen from the B direction is (b) of FIG.
As shown in FIG. 6B, one attachment hole 9 a of the heat shrinkable sheet 9 is attached to the gas valve 5, and is wound around the portion where the communication cable 2 is exposed from the auxiliary lead pipe 3 of the communication line 1. And as shown by the arrow C, the other attachment hole 9b of the heat contraction sheet | seat 9 is also attached so that the screwing part 5d of the gas valve 5 and the valve part 5c may pass. In this manner, the heat-shrinkable sheet 9 is wound around the communication line 1 with the gas valve 5 protruding from the mounting holes 9a and 9b. In this state, the gas valve 5 can be ventilated, and gas continues to leak from the through hole 5b.

次に、ヒートガン等を使用して、熱収縮シート９を均一に加熱して収縮させる。この熱収縮シート９の収縮により、熱収縮シート９が通信用線路１に対して密着し、通信用線路１にベース部５ａが密着固定される。熱収縮が完了したら、図７に示すように、Ｏリング７を嵌め込んだキャップ６をガスバルブ５の螺合部５ｄにねじ込む。これにより、ガスバルブ５が閉じて通気不可能な状態となり、貫通孔５ｂからのガス漏れが止まる。
最後に、ガス漏れ箇所の周辺に石鹸水を塗布するなどして、ガス漏れが無いことを確認する。 Next, using a heat gun or the like, the heat shrinkable sheet 9 is uniformly heated and shrunk. Due to the shrinkage of the heat shrinkable sheet 9, the heat shrinkable sheet 9 comes into close contact with the communication line 1, and the base portion 5 a is tightly fixed to the communication line 1. When the heat shrinkage is completed, the cap 6 into which the O-ring 7 is fitted is screwed into the screwing portion 5d of the gas valve 5 as shown in FIG. As a result, the gas valve 5 is closed and cannot be vented, and gas leakage from the through hole 5b is stopped.
Finally, check that there is no gas leak by applying soapy water around the gas leak point.

第２の実施形態に係るガス漏れ補修方法によれば、ガスバルブ５を通信用線路１のガス漏れ箇所に配置し、漏れているガスをガスバルブ５内に通気させながら補修を行う。このため、熱収縮シート９を通信用線路１に密着固定させるときに、噴出するガスに抗して作業を行う必要が無く作業が容易になる。そして、加熱中の熱収縮シート９と通信用線路１との間に噴出するガスの圧力がほとんど加わらないため、熱収縮がスムーズに行われる。また、熱収縮の作業は、接着剤の硬化に比べて、密着固定をより短時間で行うことができる。   According to the gas leak repair method according to the second embodiment, the gas valve 5 is disposed at the gas leak location of the communication line 1, and repair is performed while allowing the leaking gas to pass through the gas valve 5. For this reason, when the heat-shrinkable sheet 9 is tightly fixed to the communication line 1, it is not necessary to work against the gas to be ejected, and the work is facilitated. And since the pressure of the gas ejected between the heat contraction sheet 9 during heating and the communication line 1 is hardly applied, the heat contraction is performed smoothly. Further, the heat shrinking work can be performed in a shorter time as compared with the curing of the adhesive.

また、熱収縮シート９を、補助鉛管３から通信ケーブル２が露出する接合部分を一周するように巻きつけるので、この接合部分全体が熱収縮シート９で覆われる、これにより、この接合部分の他の箇所からのガス漏れを予防することもできる。
また、熱収縮シート９は、従来の多重に巻きつけるガス漏洩補修テープに比べて部材の量が少なく、コストを抑えることができる。
以上のように、第２の実施形態に係るガス漏れ補修方法によれば、通信用線路のガス漏れ箇所をケーブル外被内部に通流しているガスを停止させずに、確実にガス漏れ箇所を補修し、この補修作業を短時間で行うことができる。 Further, since the heat-shrinkable sheet 9 is wound around the joining portion where the communication cable 2 is exposed from the auxiliary lead pipe 3, the whole joining portion is covered with the heat-shrinking sheet 9. It is also possible to prevent gas leakage from the point.
Further, the heat shrinkable sheet 9 has a smaller amount of members than the conventional gas leakage repair tape wound in multiple layers, and can reduce the cost.
As described above, according to the gas leakage repair method according to the second embodiment, the gas leakage point of the communication line can be surely detected without stopping the gas flowing through the cable jacket. Repairs can be performed in a short time.

１ 通信用線路
２ 通信ケーブル
３ 補助鉛管
４ 主鉛管
５ ガスバルブ
５ａ ベース部
５ｂ 貫通孔
５ｃ 弁部
５ｄ 螺合部
６ キャップ
６ａ 底面
７ Ｏリング
８ パッチ
９ 熱収縮シート
９ａ、９ｂ 取付穴 DESCRIPTION OF SYMBOLS 1 Communication line 2 Communication cable 3 Auxiliary lead pipe 4 Main lead pipe 5 Gas valve 5a Base part 5b Through hole 5c Valve part 5d Screw part 6 Cap 6a Bottom face 7 O-ring 8 Patch 9 Heat shrink sheet 9a, 9b Mounting hole

Claims (4)

貫通孔を設けたベース部を有するガスバルブを通気可能な状態とし、通信用線路のガス漏れ箇所に前記ベース部を配置する工程と、
前記ガスバルブを通気可能な状態としたまま、前記通信用線路に前記ベース部をガス漏れ封止部材で密着固定する工程と、
前記密着固定する工程の後、前記ガスバルブを閉じて通気不可能な状態とする工程と、
を有する、通信用線路のガス漏れ補修方法。 A gas valve having a base portion provided with a through hole is made to be able to vent, and the base portion is disposed at a gas leak point of the communication line;
A step of closely fixing the base portion to the communication line with a gas leak sealing member while keeping the gas valve in a ventable state;
After the step of tightly fixing, the step of closing the gas valve and making it impossible to vent;
A gas leak repair method for communication lines. 前記ベース部を配置する工程の前に、予め前記ガス漏れ封止部材を前記ガスバルブに取り付けておく、請求項１に記載の通信用線路のガス漏れ補修方法。   The communication line gas leakage repair method according to claim 1, wherein the gas leakage sealing member is attached to the gas valve in advance before the step of arranging the base portion. 前記ガスバルブの取付穴を有するパッチを前記ガス漏れ封止部材として用い、前記パッチの取付穴に前記ガスバルブを通すように取り付けて、前記通信用線路に前記ベース部を前記パッチで接着して密着固定する、請求項１または請求項２に記載の通信用線路のガス漏れ補修方法。   A patch having a gas valve mounting hole is used as the gas leakage sealing member, and the gas valve is mounted to pass through the patch mounting hole, and the base portion is adhered and fixed to the communication line by the patch. The method for repairing a gas leak in a communication line according to claim 1 or 2. 前記ガスバルブの取付穴を有する熱収縮シートを前記ガス漏れ封止部材として用い、前記熱収縮シートの取付穴に前記ガスバルブを通すように取り付けて、前記熱収縮シートを加熱して収縮させ、前記通信用線路に前記ベース部を密着固定する、請求項１または請求項２に記載の通信用線路のガス漏れ補修方法。   Using the heat shrink sheet having the gas valve mounting hole as the gas leakage sealing member, the heat shrink sheet is attached to the heat shrink sheet so that the gas valve passes through the heat shrink sheet, the heat shrink sheet is heated and contracted, and the communication The method for repairing a gas leak in a communication line according to claim 1 or 2, wherein the base portion is closely fixed to the work line.
JP2013162452A 2013-08-05 2013-08-05 Gas leak repair method of communication line Pending JP2015033259A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016158415A (en) * 2015-02-25 2016-09-01 株式会社カンドー Method for fitting pressure measurement valve to lead tube for communication cable
JP2017089878A (en) * 2015-11-09 2017-05-25 株式会社コスモマテリアル Gas leakage part repairing method
JP2018011486A (en) * 2016-07-15 2018-01-18 スリーエム イノベイティブ プロパティズ カンパニー Member for repairing closure, heating member, sealing member, and a method for repairing closure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016158415A (en) * 2015-02-25 2016-09-01 株式会社カンドー Method for fitting pressure measurement valve to lead tube for communication cable
JP2017089878A (en) * 2015-11-09 2017-05-25 株式会社コスモマテリアル Gas leakage part repairing method
JP2018011486A (en) * 2016-07-15 2018-01-18 スリーエム イノベイティブ プロパティズ カンパニー Member for repairing closure, heating member, sealing member, and a method for repairing closure

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