JP2007170528A - Branch pipe repairing method - Google Patents

Branch pipe repairing method Download PDF

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JP2007170528A
JP2007170528A JP2005368357A JP2005368357A JP2007170528A JP 2007170528 A JP2007170528 A JP 2007170528A JP 2005368357 A JP2005368357 A JP 2005368357A JP 2005368357 A JP2005368357 A JP 2005368357A JP 2007170528 A JP2007170528 A JP 2007170528A
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pipe
branch pipe
branch
water stop
attached
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JP4879576B2 (en
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Kenzo Hashimoto
憲三 橋本
Takefumi Ishii
猛文 石井
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Cosmo Koki Co Ltd
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Cosmo Koki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a branch pipe repairing method for repairing an abnormal-condition branch pipe branching from an existing pipe in the state of an uninterrupted flow in the existing pipe to restore it into the original condition. <P>SOLUTION: The method comprises a step of mounting a sealing member 1 having an on-off valve 5 in the existing pipe P with water tightness, a step of using a drilling device 13 mounted on the sealing member 1 for drilling an insertion hole in the existing pipe P via the on-off valve 5, a step of using an inserting/discharging means mounted on the sealing member 1 in place of the drilling device 13 for inserting a water stop member through the insertion hole into the existing pipe P to close a branch port and stop a flow from the existing pipe P to the side of the branch pipe, a step of newly connecting the branch pipe to the branch port after removing the branch pipe in a water stopped condition from the existing pipe P, and a step of closing the insertion hole after using the inserting/discharging means for discharging the water stop member from the existing pipe P. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、腐食等により管厚が薄くなって強度が不足したり、漏水しているなどの異常が発生している既設管より枝分かれした分岐管を、前記既設管に対して不断流状態で異常状態を直して、もとのようにする分岐管の修復方法に関する。   In the present invention, a branch pipe branched from an existing pipe in which an abnormality such as a pipe thickness is reduced due to corrosion or the like and strength is insufficient, or water leaks, is maintained in an undisturbed state with respect to the existing pipe. The present invention relates to a method for repairing a branch pipe that corrects an abnormal state and restores the original state.

従来、流体管等の既設管より枝分かれした分岐管に対しフランジ等を介して連結される例えば空気弁や補修弁等の管接続部材を前記既設管に対し不断流状態で交換する場合には、密閉ケースによって分岐管を管接続部材を含めて外部から覆い、分岐管のフランジの接離を密閉ケースの外から操作するとともに、管接続部材を交換するために密閉ケース内を仕切る開閉機構が用いられていた(特許文献1参照)。   Conventionally, when exchanging a pipe connecting member such as an air valve or a repair valve connected to a branch pipe branched from an existing pipe such as a fluid pipe through a flange or the like in an uninterrupted state with respect to the existing pipe, Covers the branch pipe including the pipe connection member from the outside with a sealed case, operates the flange of the branch pipe from the outside of the sealed case, and uses an opening / closing mechanism that partitions the inside of the sealed case to replace the pipe connection member (See Patent Document 1).

特許第3492391号公報(第3、4頁、図1)Japanese Patent No. 3492391 (3rd, 4th page, FIG. 1)

しかしながら、この特許文献1に記載のものは、分岐管に取り付けられた管接続部材を交換するものであって、分岐管自体が腐食等により管厚が薄くなって強度が不足したり、漏水しているなどの異常が発生している場合には分岐管を修復することができないという問題があった。   However, the one described in Patent Document 1 replaces the pipe connecting member attached to the branch pipe, and the branch pipe itself becomes thin due to corrosion or the like, resulting in insufficient strength or water leakage. There has been a problem that the branch pipe cannot be repaired when an abnormality such as that occurs.

本発明は、上記問題点を解決するためになされたもので、既設管より枝分かれした分岐管を、前記既設管に対して不断流状態で異常状態を直して、もとのようにする分岐管の修復方法を提供することを目的としている。   The present invention has been made in order to solve the above-mentioned problems, and a branch pipe branched from an existing pipe is corrected to an original state in an undisturbed state with respect to the existing pipe, and the original branch pipe is restored. It aims to provide a repair method.

上記課題を解決するために、本発明の請求項1に記載の分岐管の修復方法は、既設管より枝分かれした分岐管を、前記既設管に対して不断流状態で修復する分岐管の修復方法であって、
前記既設管に開閉弁を有する密閉部材を水密に取り付ける工程と、前記密閉部材に取り付けた穿孔装置により、前記開閉弁を介して前記既設管に挿入口を穿孔する工程と、前記穿孔装置に替えて前記密閉部材に取り付けた挿排出手段により、前記挿入口より止水部材を既設管内に挿入して分岐口を閉塞し、既設管から分岐管側への流れを止める工程と、止水された状態の前記分岐管を既設管より除去した後、分岐口に新たに分岐管を接続する工程と、前記止水部材を前記挿排出手段により前記既設管より排出した後、前記挿入口を閉塞する工程と、からなることを特徴としている。
この特徴によれば、既設管に挿入口を穿孔し、その挿入口より止水部材を既設管内に挿入して分岐口を閉塞することにより分岐管の止水が行われるので、既設管に対して不断流状態で不具合のある分岐管を除去して、新しい分岐管を接続することができるので、既設管に対して不断流状態で分岐管の修復作業を行うことができる。
In order to solve the above-mentioned problem, the branch pipe repair method according to claim 1 of the present invention is a branch pipe repair method in which a branch pipe branched from an existing pipe is repaired in an uninterrupted state with respect to the existing pipe. Because
A step of attaching a sealing member having an opening / closing valve to the existing pipe in a watertight manner, a step of punching an insertion port in the existing pipe through the opening / closing valve by a punching device attached to the sealing member, and a replacement of the punching device And inserting and discharging means attached to the sealing member to insert the water-stopping member into the existing pipe from the insertion port to close the branch port and stop the flow from the existing pipe to the branch pipe side, After removing the branch pipe in the state from the existing pipe, a step of newly connecting the branch pipe to the branch opening, and after discharging the water stop member from the existing pipe by the insertion / extraction means, the insertion opening is closed. And a process.
According to this feature, the branch pipe is water-stopped by drilling an insertion port in the existing pipe, inserting a water stop member into the existing pipe from the insertion port, and closing the branch port. Since the branch pipe having a fault in the uninterrupted flow state can be removed and a new branch pipe can be connected, the repair work of the branch pipe can be performed in the uninterrupted state with respect to the existing pipe.

本発明の請求項2に記載の分岐管の修復方法は、請求項1に記載の分岐管の修復方法であって、前記挿入口は、既設管の分岐管における分岐口に対向する位置に穿孔することを特徴としている。
この特徴によれば、挿入口が分岐管の分岐口の対向位置に穿孔されるので、挿排出手段により止水部材を略まっすぐに挿入口より挿入するだけで分岐口の止水所定位置に移動させることができ、止水部材の挿排出の手段が簡易になり、また、その装置も単純な構造にすることができる。
The branch pipe repair method according to claim 2 of the present invention is the branch pipe repair method according to claim 1, wherein the insertion port is drilled at a position facing the branch port in the branch pipe of the existing pipe. It is characterized by doing.
According to this feature, since the insertion port is drilled at a position opposite to the branch port of the branch pipe, the water stop member can be moved to the predetermined water stop position of the branch port simply by inserting the water stop member through the insertion port substantially straight from the insertion port. The means for inserting and discharging the water-stopping member can be simplified, and the device can also have a simple structure.

本発明の請求項3に記載の分岐管の修復方法は、請求項1または2に記載の分岐管の修復方法であって、前記挿排出手段は、前記開閉弁に水密に取り付けた挿排出フランジと、前記止水部材を挿排出する作動装置と、該作動装置を支持する支柱とで構成されていることを特徴としている。
この特徴によれば、支柱に作動装置を支持させて、その作動装置により挿排出フランジを取り付けた開閉弁を介して止水部材を挿排出するので、不断水で安定して確実に止水部材を駆動できる。
The branch pipe repair method according to claim 3 of the present invention is the branch pipe repair method according to claim 1 or 2, wherein the insertion and discharge means is an insertion and discharge flange attached to the on-off valve in a watertight manner. And an actuating device for inserting and discharging the water stop member, and a support column for supporting the actuating device.
According to this feature, the water stop member is inserted and discharged through the on-off valve that supports the operating device on the support column and the insertion and discharge flange is attached by the operating device. Can be driven.

本発明の請求項4に記載の分岐管の修復方法は、請求項3に記載の分岐管の修復方法であって、前記作動装置は、止水部材が一方の端部に装着されるシャフトと、前記シャフトの他方の端部を固定支持する固定部材と、ハンドルの回転で前記固定部材を進退移動する螺合部材とで構成されていることを特徴としている。
この特徴によれば、ハンドルを回転させるだけで止水部材を駆動できるので熟練を要することなく止水部材を挿排出して分岐管の修復作業を行うことができる。
The branch pipe repair method according to claim 4 of the present invention is the branch pipe repair method according to claim 3, wherein the actuating device includes a shaft on which a water stop member is attached to one end. The fixing member includes a fixing member that fixes and supports the other end of the shaft, and a screwing member that moves the fixing member forward and backward as the handle rotates.
According to this feature, since the water stop member can be driven only by rotating the handle, the water stop member can be inserted and discharged without requiring skill, and the branch pipe can be repaired.

本発明の請求項5に記載の分岐管の修復方法は、請求項1ないし4に記載の分岐管の修復方法であって、前記止水部材は、前記分岐管における分岐口の少なくとも流体管内周面に当接して密着する止水体と、前記止水体を押圧する反力を受ける支持体とで構成されていることを特徴としている。
この特徴によれば、止水部材を既設管内に挿入し、止水体を分岐口の流体管内面に密着させて支持体によりその状態を保持することができるので、流体管から分岐管側への流れを確実に止水し分岐口を閉塞して分岐管を止水常態とすることができる。
The branch pipe repair method according to claim 5 of the present invention is the branch pipe repair method according to any one of claims 1 to 4, wherein the water stop member is at least an inner periphery of a fluid pipe of a branch port in the branch pipe. It is characterized by comprising a water-stopping body that comes into contact with and in close contact with a surface, and a support body that receives a reaction force that presses the water-stopping body.
According to this feature, the water stop member can be inserted into the existing pipe and the water stop body can be brought into close contact with the inner surface of the fluid pipe of the branch port, and the state can be maintained by the support body. The flow can be reliably stopped, the branch port can be blocked, and the branch pipe can be in a normal water stop state.

本発明の請求項6に記載の分岐管の修復方法は、請求項1ないし5に記載の分岐管の修復方法であって、前記挿排出手段により前記止水部材を排出した後に、密着栓体で前記挿入口を閉塞し、該密着栓体を水密に覆う保護部材を既設管に取り付けることを特徴としている。
この特徴によれば、密着栓体で挿入口を閉塞し、更に保護部材で密着栓体を水密に覆うので、挿入口の止水が2重に行われて水密に対する安全性が向上し、また、密着栓体を外部の影響から守ることができる。
A branch pipe repairing method according to claim 6 of the present invention is the branch pipe repairing method according to any one of claims 1 to 5, wherein after the water-stopping member is discharged by the inserting and discharging means, a close-contact plug body is provided. The insertion port is closed, and a protective member that covers the close-contact plug body in a water-tight manner is attached to the existing pipe.
According to this feature, the insertion port is closed with the close-in plug, and the close-in plug is covered with the protective member in a water-tight manner. It is possible to protect the contact plug from external influences.

本発明の実施例を以下に説明する。   Examples of the present invention will be described below.

図1〜図20は、本発明の一実施形態を示すもので、図1は本発明に係る分岐管に空気弁が取り付けられている状態を示す説明図、図2は本発明に係る分岐管の修復方法における最初の工程であって、密閉部材を流体管に取り付けた状態を示す説明図、図3は穿孔装置を密閉部材に設置し、流体管を穿孔する工程の説明図、図4は挿排出装置を取り付る工程の説明図、図5は挿排出装置により挿入口から止水部材を挿入し分岐管を止水する工程の説明図、図6は止水状態の分岐管を取り外し、新しく補修弁を介した空気弁を取り付けられる新たに分岐管を取り付ける工程の説明図、図7は流体管に新たな分岐管を取り付け、更に補修弁を介して空気弁を取り付けた状態の説明図、図8は止水部材に替えて密着栓体を取り付ける工程の説明図、図9は密着栓体を挿入口に設置して閉鎖する工程の説明図、図9は仮固定部材を取り付ける工程の説明図、図10は密着栓体を仮溶接して抜け出しを防止する工程の説明図、図11は、流体管より密閉部材および挿排出装置を取り外す工程の説明図、図12は保護部材を流体管に固定する工程の説明図、図13は保護部材内に充填材を充填した最終工程の説明図、図14(a)は密着栓体の側面図、(b)は(a)のC−C矢視図、(c)は(a)のD−D断面図、図15は仮固定部材を取り付ける工程の説明図、図16は仮固定部材により密着栓体の抜け出しを防止して密閉部材を取り外す工程の説明図、図17は保護部材をシャフトに挿通し、シャフトで密着栓体の抜け出しを防止する工程の説明図、図18は仮固定部材を取り外したのちに保護部材を流体管に固定にする工程の説明図、図19は挿排出装置を取り外し、キャップを設置した最終工程の説明図、図20(a)は別の挿排出装置のE−E断面図、(b)は(a)の底面図である。   1 to 20 show an embodiment of the present invention. FIG. 1 is an explanatory view showing a state in which an air valve is attached to a branch pipe according to the present invention, and FIG. 2 is a branch pipe according to the present invention. FIG. 3 is an explanatory view showing a state in which the sealing member is attached to the fluid pipe, FIG. 3 is an explanatory view of a process of drilling the fluid pipe by installing the punching device on the sealing member, and FIG. FIG. 5 is an explanatory diagram of the process of attaching the insertion / ejection device, FIG. 5 is an explanatory diagram of the process of inserting the water stop member from the insertion port by the insertion / ejection device to stop the branch pipe, and FIG. 6 is the removal of the water stop state branch pipe FIG. 7 is an explanatory diagram of a process for attaching a new branch pipe to which a new air valve can be attached via a repair valve. FIG. 7 is a diagram illustrating a state in which a new branch pipe is attached to a fluid pipe and an air valve is further attached via a repair valve. FIG. 8 is an explanatory view of a process of attaching a close-fitting plug instead of the water-stopping member, 9 is an explanatory view of a process for installing and closing the close-fitting plug body at the insertion port, FIG. 9 is an explanatory view of a process for attaching the temporary fixing member, and FIG. 10 is an explanatory view of a process for temporarily welding the close-fitting plug body to prevent it from coming out. FIG. 11 is an explanatory view of a process of removing the sealing member and the insertion / ejection device from the fluid pipe, FIG. 12 is an explanatory view of a process of fixing the protective member to the fluid pipe, and FIG. 13 is a filler filled in the protective member. 14A is a side view of the close-contact plug body, FIG. 14B is a cross-sectional view taken along the line CC of FIG. 15A, FIG. 14C is a cross-sectional view taken along line DD of FIG. Is an explanatory diagram of the process of attaching the temporary fixing member, FIG. 16 is an explanatory diagram of the process of removing the sealing member by preventing the sticking plug from coming off by the temporary fixing member, and FIG. Explanatory drawing of the process of preventing the stopper from coming out, FIG. 18 shows the temporary fixing member removed. FIG. 19 is an explanatory view of the final process in which the insertion / ejection device is removed and a cap is installed, and FIG. 20 (a) is a cross-sectional view taken along line EE of another insertion / ejection device. FIG. 4B is a bottom view of FIG.

図1に示すように、流体管Pの管内を流れる水道水中の空気を排出するために、あるいは管内が負圧にならないように流体管Pの所定箇所毎には空気弁AVが設けられており、空気弁AVは、流体管Pから枝分かれし分岐状に設けられた分岐管Bの上端にフランジを介して取り付けられている。分岐管Bは流体管Pが大口径になると、人孔の上部に空気弁用フランジふたとして設けられることもある。   As shown in FIG. 1, an air valve AV is provided at each predetermined position of the fluid pipe P in order to discharge air in the tap water flowing through the pipe of the fluid pipe P, or so that the inside of the pipe does not become negative pressure. The air valve AV is attached to the upper end of a branch pipe B branched from the fluid pipe P via a flange. When the fluid pipe P has a large diameter, the branch pipe B may be provided as an air valve flange lid at the upper part of the human hole.

通常は、空気弁AVの修理、調整時に分岐管Bからの流れを開閉操作する補修弁Vが、流体管Pの分岐管Bに設けたフランジに取り付けられて、補修弁Vの上端にフランジを介して空気弁AVが取り付けられている(図13参照)。   Normally, a repair valve V that opens and closes the flow from the branch pipe B during repair and adjustment of the air valve AV is attached to a flange provided on the branch pipe B of the fluid pipe P, and a flange is provided at the upper end of the repair valve V. An air valve AV is attached via the air valve (see FIG. 13).

図1のように補修弁Vが設けられていない空気弁AVや、あるいは補修弁Vが設けられていてもその補修弁Vが故障等によって止水不良となった空気弁等の交換もさることながら、その空気弁AVが取り付けられている分岐管Bが腐食などにより管厚が薄くなったり、あるいは漏水したりしていて、この分岐管Bを修復する必要がある場合が多々あり本工法の分岐管の修復方法が採用される。   As shown in FIG. 1, the air valve AV not provided with the repair valve V, or the air valve or the like in which the repair valve V has been stopped due to failure or the like even if the repair valve V is provided may be replaced. However, there are many cases where the branch pipe B to which the air valve AV is attached is thinned or leaked due to corrosion or the like, and it is necessary to repair the branch pipe B. A branch pipe repair method is adopted.

以下、流体管Pより枝分かれし空気弁AV等が取り付けられている分岐管Bの修復をを不断流で行う方法を説明する。   Hereinafter, a method of repairing the branch pipe B branched from the fluid pipe P and attached with the air valve AV and the like in a continuous flow will be described.

まず、図2に示すように、流体管Pの外周面を清掃した後、分岐管Bの対向位置に開閉弁5が配置されるように流体管Pに水密に密閉部材1を取り付ける。密閉部材1を取り付けた後、開閉弁5にフランジ蓋を設置し水圧試験を行い水密性の確認を行う。   First, as shown in FIG. 2, after the outer peripheral surface of the fluid pipe P is cleaned, the sealing member 1 is attached to the fluid pipe P in a watertight manner so that the on-off valve 5 is disposed at a position facing the branch pipe B. After the sealing member 1 is attached, a flange lid is installed on the on-off valve 5 and a water pressure test is performed to confirm water tightness.

密閉部材1は、流体管Pの外周に水密に装着され、流体管Pの管軸の略直角方向を向いた分岐管部2aの先端に設けた分岐フランジ2bに開閉弁5を取り付けた分岐部材2と、互いに対向して設けられた分岐部材2のフランジ部2cとフランジ部3bとを締結部材4で締結して取り付けるバンド部材3とで構成されている。   The sealing member 1 is attached to the outer periphery of the fluid pipe P in a water-tight manner, and is a branching member in which an opening / closing valve 5 is attached to a branch flange 2b provided at the tip of the branch pipe portion 2a facing the direction substantially perpendicular to the pipe axis of the fluid pipe P. 2 and a band member 3 to which a flange portion 2c and a flange portion 3b of a branching member 2 provided opposite to each other are fastened by a fastening member 4 and attached.

分岐部材2の分岐管部2aの内周面に分岐フランジ2bが摺動可能に差し込まれ、その流体管P側に設けられた止水パッキンを管外周面に押し付けて止水している。分岐管部2aと分岐フランジ2bとにまたがって設けられ相対移動および固定する調整ボルトが設けられている。分岐部材2とバンド部材3が流体管Pに取り付けられた後でも調整ボルトを作動させることにより止水パッキンを流体管Pに押圧することができる。   The branch flange 2b is slidably inserted into the inner peripheral surface of the branch pipe portion 2a of the branch member 2, and the water stop packing provided on the fluid pipe P side is pressed against the outer peripheral surface of the pipe to stop the water. An adjustment bolt that is provided across the branch pipe portion 2a and the branch flange 2b and that is relatively moved and fixed is provided. Even after the branch member 2 and the band member 3 are attached to the fluid pipe P, the water stop packing can be pressed against the fluid pipe P by operating the adjusting bolt.

バンド部材3は、分岐管Bを跨いで所定の間隔をあけて設けられ、流体管Pの外周に沿って略半周に亘って形成されるバンド部3aと、流体管Pの管軸に略平行で流体管Pの両側に設けられたフランジ部3bとよりなり、管頂部分で分割されボルト・ナットで一体となり、バンド部3a、3aに間隔があいているので空気弁AVの上方よりかぶせるようにして流体管Pに取り付けることができる。   The band member 3 is provided at a predetermined interval across the branch pipe B, and is substantially parallel to the band portion 3a formed over the outer circumference of the fluid pipe P over a substantially half circumference and the pipe axis of the fluid pipe P. And the flange portions 3b provided on both sides of the fluid pipe P, divided at the top of the pipe and integrated with bolts and nuts, and the band portions 3a and 3a are spaced apart so that they are covered from above the air valve AV. And can be attached to the fluid pipe P.

分岐フランジ2bに取り付けられる開閉弁5は、弁軸を回動することにより弁体5aが移動し通路を開閉する仕切弁であり、弁体5aを閉の状態にしたときには、流体管Pに水密に取り付けられた分岐部材2の分岐管部2aの内部に密閉空間を形成する。   The on-off valve 5 attached to the branch flange 2b is a gate valve that opens and closes the passage by moving the valve body by rotating the valve shaft. When the valve body 5a is closed, the fluid pipe P is watertight. A closed space is formed inside the branch pipe portion 2a of the branch member 2 attached to the.

次に、図3に示すように、知られている穿孔機13(穿孔装置)を開閉弁5に取り付け、開閉弁5の弁体5aを開状態とし、円筒形のホールソーカッター13aを図示しない油圧モーターなどで回転駆動し、かつ、ハンドル13bの回転操作による送り作用で流体管Pの周壁に後述する止水部材8よりも大きな径の挿入口14を穿孔する。穿孔終了後、ハンドル13bの逆回転操作によりホールソーカッター13aは切片を回収しながら穿孔機13側に引き戻され、開閉弁5の弁体5aを閉状態とした後に穿孔機13を開閉弁5より取り外す。   Next, as shown in FIG. 3, a known perforator 13 (perforation device) is attached to the on-off valve 5, the valve body 5a of the on-off valve 5 is opened, and the cylindrical hole saw cutter 13a is not shown in the hydraulic pressure. An insertion port 14 having a diameter larger than that of the water stop member 8 described later is drilled in the peripheral wall of the fluid pipe P by a rotation operation by a motor or the like and by a feeding action by a rotation operation of the handle 13b. After completion of drilling, the hole saw cutter 13a is pulled back to the punching machine 13 side while collecting the section by reverse rotation operation of the handle 13b, and after closing the valve body 5a of the on-off valve 5, the punching machine 13 is removed from the on-off valve 5. .

分岐管Bの対向位置に配置された開閉弁5に取り付けられた穿孔機13により穿孔された挿入口14は、分岐管Bの対向位置に設けられる。   An insertion port 14 pierced by a piercing machine 13 attached to the on-off valve 5 disposed at a position facing the branch pipe B is provided at a position facing the branch pipe B.

次いで図4に示すように、挿排出手段である挿排出装置6を穿孔機13に替えて設置する。挿排出装置6は、主として開閉弁5に取り付ける挿排出フランジ7と、分岐管Bを閉鎖する止水体8aを有する止水部材8と、シャフト9に取り付けられた止水部材8を挿排出する作動装置10と、この作動装置10を支持する支柱11、11と、支柱11、11を所定の間隔を空けて流体管Pに取り付ける挟着具12、12とから構成されている。   Next, as shown in FIG. 4, the insertion / ejection device 6 as an insertion / ejection means is installed in place of the punch 13. The insertion / extraction device 6 mainly inserts / discharges the insertion / extraction flange 7 attached to the on-off valve 5, the water stop member 8 having the water stop body 8a for closing the branch pipe B, and the water stop member 8 attached to the shaft 9. The apparatus 10 is comprised from the support | pillars 11 and 11 which support this actuator 10, and the clamping tools 12 and 12 which attach the support | pillars 11 and 11 to the fluid pipe P at predetermined intervals.

挿排出フランジ7は、開閉弁5に水密に取り付けられるフランジが形成され、略中央にシャフト9が水密に貫通し、止水部材8を収容することができる凹状の収容部が形成されている。   The insertion / ejection flange 7 is formed with a flange that is attached to the on-off valve 5 in a watertight manner, and a shaft 9 penetrates in a watertight manner at a substantially central portion, and a concave accommodating portion that can accommodate the water stop member 8 is formed.

止水部材8は、分岐管Bの流体管Pとの接続部の分岐口BEに当接して止水する円錐形に形成された弾性体よりなる止水体8aと、シャフト9に着脱自在に取り付けられ、止水体8aを分岐口BEに押し付けたときの反力を受ける支持体8cとよりなり、止水部材8の外径は、分岐管Bの内径よりも大きく、かつ、挿入口14よりも小さく設定される。   The water stop member 8 is detachably attached to a shaft 9 and a water stop body 8a made of an elastic body formed in a conical shape for stopping water by contacting a branch port BE of a connection portion of the branch pipe B with the fluid pipe P. And a support 8c that receives a reaction force when the waterstop 8a is pressed against the branch port BE. The outer diameter of the waterstop member 8 is larger than the inner diameter of the branch pipe B and is larger than that of the insertion port 14. Set small.

密閉部材1の両側の流体管P外周に着脱自在に装着された挟着具12、12の鞍部にボルトにより着脱自在に取り付けられた一対の支柱11、11は中空の円筒形をしており、作動装置10のガイド部10aの両端部に取り付けられている。   A pair of struts 11 and 11 detachably attached by bolts to the flanges of the clamps 12 and 12 detachably attached to the outer periphery of the fluid pipe P on both sides of the sealing member 1 have a hollow cylindrical shape. The actuator 10 is attached to both ends of the guide portion 10a.

作動装置10は、中央部にハンドル10bが設けられ、ハンドル10bを回転することにより両端部に設けた進退部材を作動させて送りネジ10cを支柱11内に進退させる機構を内蔵したガイド部10aと、略中央にシャフト9が固定され、両端に送りネジ10c、10cが固定された固定部材10dとよりなる。(図5参照)   The actuating device 10 is provided with a handle 10b at the center, and a guide 10a having a built-in mechanism for operating the advance / retreat member provided at both ends by rotating the handle 10b to advance and retract the feed screw 10c into the support column 11. The shaft 9 is fixed substantially at the center, and the fixing member 10d is fixed to both ends with feed screws 10c and 10c. (See Figure 5)

ガイド部10aのハンドル10bを回転すると、進退機構により送りネジ10cが支柱11に対して進退し、固定部材10dに固定されたシャフト9も流体管Pに対して進退する。   When the handle 10b of the guide portion 10a is rotated, the feed screw 10c advances and retreats with respect to the column 11 by the advance and retreat mechanism, and the shaft 9 fixed to the fixing member 10d also advances and retreats with respect to the fluid pipe P.

挿排出装置6を設置した後、図5に示すように、開閉弁5の弁体5aを開状態として、ガイド部10aのハンドル10bを正回動して止水部材8を分岐管Bの方向に送り出し、所定の送り出しが終了した時点でハンドル10bの回動を終了する。送り出された止水部材8は、穿孔機13によって開けられた挿入口14より流体管P内に入り込み、挿入口14に対向した分岐管Bの分岐口BEに当接し、止水体8aが密着して流体管Pから分岐管Bへの流れを遮断する。止水体8aが円錐形に形成されているので、自動的に分岐口BEに対し芯あわせが行われ分岐口BEの形状に倣って密着させることができ止水効果を高める。止水体8aは先端が切り落とされた円錐台形でも同じ作用をする。   After installing the insertion / ejection device 6, as shown in FIG. 5, the valve body 5 a of the on-off valve 5 is opened, the handle 10 b of the guide portion 10 a is rotated forward, and the water stop member 8 is moved in the direction of the branch pipe B. When the predetermined delivery is finished, the rotation of the handle 10b is finished. The sent water stop member 8 enters the fluid pipe P from the insertion port 14 opened by the punching machine 13, contacts the branch port BE of the branch pipe B facing the insertion port 14, and the water stop body 8a is in close contact therewith. Thus, the flow from the fluid pipe P to the branch pipe B is interrupted. Since the waterstop 8a is formed in a conical shape, the centering is automatically performed with respect to the branch port BE and can be brought into close contact with the shape of the branch port BE, thereby enhancing the water stop effect. The waterstop 8a has the same effect even in a truncated cone shape with the tip cut off.

止水部材8を所定位置まで送った後、空気弁AVより分岐管B側への止水が完了しているか確認し、止水が十分でない場合には、更にハンドル10bを正回動して止水部材8を分岐Bの方向に更に送り、止水体8aの圧着を強めて止水する。   After the water stop member 8 is sent to a predetermined position, it is confirmed whether the water stop from the air valve AV to the branch pipe B is completed. If the water stop is not sufficient, the handle 10b is further rotated forward. The water-stopping member 8 is further fed in the direction of the branch B, and the water-stopping body 8a is strengthened in pressure bonding to stop the water.

止水部材8を送り出して止水する前に、分岐管Bの基の分岐口BEの周辺のさびを落とす作業を行うと止水性が向上する。   If the operation of removing the rust around the branch port BE of the branch pipe B is performed before the water stop member 8 is sent out to stop the water, the water stoppage is improved.

分岐管B側の止水が確認できた後、図6に示すように、分岐管Bが止水部材8により閉鎖された状態になっているので、分岐管Bの根元をグラインダー等により切断し流体管Pより分離し撤去する。撤去後切断面をきれいに研磨し、切断面やその周囲に防錆材等を塗布する。   After the water stop on the side of the branch pipe B has been confirmed, as shown in FIG. 6, the branch pipe B is closed by the water stop member 8, so the root of the branch pipe B is cut with a grinder or the like. Separate from the fluid pipe P and remove. After removal, the cut surface is cleanly polished, and a rust preventive material is applied to the cut surface and its surroundings.

次に、新たな分岐管NBを分岐芯を合わせて設置し溶接して流体管Pに取り付ける。分岐管NBは、上部にフランジが形成され下端に所定の直径を有し、流体管Pの外周にあわせて形成された補強部NBaがリブNBbを伴って取り付けらた短管となっている。流体管Pに分岐管NBを取り付ける溶接は、補強部NBaの周端部で行われるため、溶接部分と止水部材8aとに距離があることと、内部の流体により熱が奪われることにより、溶接による熱は止水部材8aの止水性能に影響することがない。   Next, a new branch pipe NB is installed with the branch cores aligned, welded, and attached to the fluid pipe P. The branch pipe NB is a short pipe in which a flange is formed at an upper portion and a predetermined diameter is provided at a lower end, and a reinforcing portion NBa formed along the outer periphery of the fluid pipe P is attached with a rib NBb. Since the welding for attaching the branch pipe NB to the fluid pipe P is performed at the peripheral end of the reinforcing part NBa, there is a distance between the welded part and the water stop member 8a, and heat is taken away by the internal fluid. The heat generated by welding does not affect the water stop performance of the water stop member 8a.

分岐管NBの取り付けが終了したら、図7に示すように、分岐管NBのフランジに補修弁Vおよび空気弁AVを取り付ける。補修弁Vおよび空気弁AVは、分岐管NBを溶接取り付けする前に設置してあってもよい。   When the attachment of the branch pipe NB is completed, the repair valve V and the air valve AV are attached to the flange of the branch pipe NB as shown in FIG. The repair valve V and the air valve AV may be installed before the branch pipe NB is attached by welding.

分岐管NBに補修弁Vおよび空気弁AVを取り付けた後、ガイド部10aのハンドル10bを逆回転させて止水部材8を流体管P内から後退させ、開閉弁5の弁体5aよりも後方まで戻し、流体管P内から止水部材8を回収して開閉弁5の弁体5aを閉状態とする。   After the repair valve V and the air valve AV are attached to the branch pipe NB, the handle 10b of the guide portion 10a is reversely rotated to retract the water stop member 8 from the fluid pipe P, and the rear side of the valve body 5a of the on-off valve 5 The water stop member 8 is recovered from the fluid pipe P, and the valve body 5a of the on-off valve 5 is closed.

次に、図8に示すように、挿排出フランジ7を開閉弁5より取り外し、シャフト9に止水部材8に替えて密着栓体15を取り付け、再び挿排出フランジ7を開閉弁5に取り付ける。   Next, as shown in FIG. 8, the insertion / ejection flange 7 is removed from the opening / closing valve 5, a close-fitting plug 15 is attached to the shaft 9 instead of the water stop member 8, and the insertion / ejection flange 7 is attached to the opening / closing valve 5 again.

密着栓体15は図14に示すように、押圧体15bと支持体15cにて挟圧されて挿入口14に密着して止水する弾性体よりなる止水体15aと、シャフト9に着脱自在に取り付けられ、押圧体15bの移動により止水体15aを挟圧するときの反力を受ける支持体15cと、回転することにより押圧体15bに固定されたネジ軸15eに沿って押圧体15bを移動させる回転体15dとより構成される。   As shown in FIG. 14, the close-fitting plug 15 is detachably attached to the water-stopping body 15 a made of an elastic body that is pinched by the pressing body 15 b and the support body 15 c and is in close contact with the insertion port 14 to stop water, and the shaft 9. A support 15c that is attached and receives a reaction force when the waterstop 15a is pinched by the movement of the pressing body 15b, and a rotation that moves the pressing body 15b along the screw shaft 15e fixed to the pressing body 15b by rotating. It is comprised from the body 15d.

ネジ軸15eは両側面に面取りを施され押圧体15bに固定されおり、止水体15a、支持体15cの中央に設けられた貫通孔に回転不能に挿通してその先端に回転体15dがねじ込まれている。   The screw shaft 15e is chamfered on both sides and fixed to the pressing body 15b. The screw shaft 15e is non-rotatably inserted into a through hole provided in the center of the water stop body 15a and the support body 15c, and the rotating body 15d is screwed into the tip thereof. ing.

止水体15a、押圧体15bは流体管Pの径に倣った円弧状に湾曲している。   The water stop body 15a and the pressing body 15b are curved in an arc shape that follows the diameter of the fluid pipe P.

また、支持体15cには、流体管Pの外周に当接して過度の挿入を防ぐ突起部15fが膨出形成され、シャフト9の端部に設けられたフランジにボルトで取り付けるネジ孔15gが螺設されている。   In addition, the support 15c bulges to form a protrusion 15f that abuts the outer periphery of the fluid pipe P to prevent excessive insertion, and a screw hole 15g that is attached to a flange provided at the end of the shaft 9 with a bolt is screwed. It is installed.

このように構成された密着栓体15を、シャフト9の内部に設けられ、シャフト9の固定部材10d側の端部に形成された角頭部10fを回転させると同調して回転するスピンドル10eの一方の端部に形成された係合部を回転体15dに嵌合させるとともに、シャフト9の端部のフランジにボルトによって着脱自在に固定し、挿排出フランジ7を開閉弁に取り付ける。   The close-contact plug 15 configured in this way is provided inside the shaft 9 and is rotated in synchronism with rotation of the angular head 10f formed at the end of the shaft 9 on the fixing member 10d side. The engaging portion formed at one end is fitted to the rotating body 15d, and is detachably fixed to the flange at the end of the shaft 9 by a bolt, and the insertion / ejection flange 7 is attached to the on-off valve.

その後、図9に示すように、開閉弁5の弁体5aを開状態とし、ガイド部10aのハンドル10bを正回転し、密着栓体15を挿入口14の方向に送り出し、密着栓体15に設けられた突起部15fが流体管Pの外周面に当接し所定位置に到達したら、角頭部10fを回転させると、スピンドル10eが回転すると共に回転体15dも回動し、押圧体15bが支持体15c方向に移動して止水体15aを挟圧し、止水体15aは膨出し挿入口14に密着して止水する。止水体15aは、挿入口14の切断面に密着するので、切断面に錆びが発生するのを防ぐことができる。   After that, as shown in FIG. 9, the valve body 5 a of the on-off valve 5 is opened, the handle 10 b of the guide portion 10 a is rotated forward, the close-contact plug 15 is sent in the direction of the insertion port 14, and the close-contact plug 15 is When the provided projection 15f comes into contact with the outer peripheral surface of the fluid pipe P and reaches a predetermined position, when the corner head 10f is rotated, the spindle 10e rotates and the rotating body 15d also rotates, and the pressing body 15b is supported. The water stop body 15a is clamped by moving in the direction of the body 15c, and the water stop body 15a bulges and comes into close contact with the insertion port 14 to stop water. Since the waterstop 15a is in close contact with the cut surface of the insertion port 14, it is possible to prevent rust from being generated on the cut surface.

次いで、図10に示すように、シャフト9により密着栓体15を押さえてその抜け出しを防止した状態で密閉部材1の締結部材4を取り外し、分岐部材2とバンド部材3を分離する。   Next, as shown in FIG. 10, the fastening member 4 of the sealing member 1 is removed in a state in which the close-off plug 15 is pressed by the shaft 9 to prevent it from coming off, and the branch member 2 and the band member 3 are separated.

その後、バンド部材3は流体管Pより取り外し、分岐部材2、開閉弁5は挿排出装置6に支持した状態で流体管Pより引き離して密着栓体15の周囲に作業空間を確保した後、密着栓体15と流体管P外周面とを部分的に溶接して仮止めを行う。   Thereafter, the band member 3 is removed from the fluid pipe P, and the branching member 2 and the on-off valve 5 are separated from the fluid pipe P in a state of being supported by the insertion / extraction device 6 to secure a working space around the tight plug 15 The stopper 15 and the outer peripheral surface of the fluid pipe P are partially welded and temporarily fixed.

次いで、図11に示すように、流体管Pよりシャフト9、支柱11、11、挟着具12、12、挿排出装置6を取り外す。密着栓体15は、挿入口14を閉塞し、溶接で固定されているので抜け出すことがない。   Next, as shown in FIG. 11, the shaft 9, the struts 11 and 11, the sandwiching tools 12 and 12, and the insertion / extraction device 6 are removed from the fluid pipe P. The close-fitting plug body 15 closes the insertion port 14 and is fixed by welding so that it does not come out.

次いで、図12に示すように、密着栓体15を覆う保護部材17を流体管P外周面に溶接して水密に取り付ける。保護部材17は、密着栓体15を外周から覆うキャップ部17aと流体管Pの外周面に沿った補強部17bと、密着栓体15に当接して抜け出しを防止する保持部材17cとよりなる。保持部材17cは、保護部材17が取り付けられた後、外部より操作し内面に突出させて密着栓体15に当接させる。   Next, as shown in FIG. 12, a protective member 17 covering the close-fitting plug 15 is welded to the outer peripheral surface of the fluid pipe P and attached in a watertight manner. The protective member 17 includes a cap portion 17a that covers the close-contact plug body 15 from the outer periphery, a reinforcing portion 17b that extends along the outer peripheral surface of the fluid pipe P, and a holding member 17c that contacts the close-contact plug body 15 and prevents the plug member 15 from coming out. After the protective member 17 is attached, the holding member 17c is operated from the outside, protrudes to the inner surface, and makes contact with the contact plug 15.

最後に図13に示すように、保護部材17に内部に図示していない2つのソケットの一方より充填材を注入し内部が充填された後2個のソケットを閉塞する。保護部材17が水密に設置されることにより挿入口14が二重に水密に閉鎖され、分岐管Bの修復作業が終了する。   Finally, as shown in FIG. 13, a filler is injected into the protective member 17 from one of two sockets (not shown) to fill the inside, and then the two sockets are closed. By installing the protective member 17 in a watertight manner, the insertion port 14 is double watertightly closed, and the repairing operation of the branch pipe B is completed.

従って、上記のような分岐管の修復方法によれば、分岐管Bや空気弁AVの上方や周囲に従来の密閉ケースのような装置を立設することなく、穿孔機13により流体管Pに挿入口14を設け、その挿入口14より止水部材8を流体管P内に挿入して分岐管Bを止水することができるので、分岐管Bや空気弁AVの上方や周囲に作業スペースがなくとも管接続部材の脱着を不断水で行うことができる。既設管に挿入口を穿孔し、その挿入口より止水部材を既設管内に挿入して分岐口を閉塞することにより分岐管の止水が行われるので、既設管に対して不断流状態で不具合のある分岐管を除去して、新しい分岐管を接続することができるので、既設管に対して不断流状態で分岐管の修復作業を行うことができる。   Therefore, according to the method for repairing the branch pipe as described above, the perforator 13 can be used to connect the fluid pipe P to the fluid pipe P without installing a device such as a conventional sealed case above or around the branch pipe B or the air valve AV. Since the insertion port 14 is provided and the water stop member 8 can be inserted into the fluid pipe P from the insertion port 14 to stop the branch pipe B, the work space is provided above and around the branch pipe B and the air valve AV. Even if there is no, the attachment / detachment of the pipe connecting member can be performed with continuous water. Since the branch pipe is water-stopped by drilling an insertion port in the existing pipe, inserting a water-stopping member into the existing pipe from the insertion port, and closing the branch port, there is a problem with the existing pipe in an uninterrupted flow state. Since the existing branch pipe can be removed and a new branch pipe can be connected, the repair work of the branch pipe can be performed in an uninterrupted state with respect to the existing pipe.

また、挿入口14が分岐管Bの分岐口BEの対向位置に穿孔されるので、挿排出装置6により止水部材8を略まっすぐに挿入口14より挿入するだけで分岐口BEを止水するための所定位置に送ることができるので、止水部材8の挿排出の手段が簡単になり、挿排出装置6の構造も単純にすることができる。   Moreover, since the insertion port 14 is pierced in the position opposite to the branch port BE of the branch pipe B, the branch port BE is stopped by simply inserting the water stop member 8 from the insertion port 14 by the insertion / ejection device 6. Therefore, the means for inserting and discharging the water-stopping member 8 can be simplified, and the structure of the inserting and discharging device 6 can be simplified.

そして、支柱11、11に作動装置10を支持させて、その作動装置10により挿排出フランジ7を取り付けた開閉弁5を介して止水部材8を挿排出するので、不断水で安定して確実に止水部材8を駆動できる。   And since the operation apparatus 10 is supported by the support | pillars 11 and 11, and the water stop member 8 is inserted / discharged via the on-off valve 5 which attached the insertion / extraction flange 7 by the operation apparatus 10, it is reliably and reliably with indefinite water. The water stop member 8 can be driven.

更に、ハンドル10bを回転させるだけで止水部材8を駆動できるので熟練を要することなく止水部材8を挿排出して分岐管Bの修復作業を行うことができる。   Furthermore, since the water stop member 8 can be driven only by rotating the handle 10b, the water stop member 8 can be inserted and discharged without requiring skill, and the branch pipe B can be repaired.

また、密着栓体15で挿入口14を閉塞し、更に保護部材17で密着栓体15を水密に覆うので、挿入口14の止水が2重に行われて水密に対する安全性が向上し、また、密着栓体15を外部の影響から守ることができる。   Moreover, since the insertion port 14 is closed with the close-contact plug 15 and the close-contact plug 15 is covered with the protective member 17 in a water-tight manner, the water-tightness of the insertion port 14 is doubled and the safety against water-tightness is improved. Further, the close-contact plug 15 can be protected from external influences.

前記実施例においては、密着栓体は、流体管に溶接で固定された後に保護部材が取り付けられたが、以下に説明するように密着栓体を仮固定部材で一時的に固定して密閉部材を取り外して保護部材を取り付けてもよい。   In the above embodiment, the contact plug is fixed to the fluid pipe by welding, and then the protective member is attached. However, as described below, the contact plug is temporarily fixed by the temporary fixing member and the sealing member is fixed. May be removed and a protective member attached.

実施例の図10で示した、シャフト9により密着栓体15を押さえてその抜け出しを防止した状態で密閉部材1の締結部材4を取り外し、分岐部材2とバンド部材3を分離した後、図15に示すように、両端部に後述する保護部材のバンド部材18eのフランジ部18fと締結可能なフランジ部16aを形成した半割円筒状の仮固定部材16を密着栓体15に抜け出し防止に当接させると共にバンド部材18eと締結部材4で締結し設置する。   After the fastening member 4 of the sealing member 1 is removed and the branch member 2 and the band member 3 are separated in a state in which the close-off plug 15 is pressed by the shaft 9 and prevented from coming off as shown in FIG. As shown in FIG. 2, the half-cylindrical temporary fixing member 16 having a flange portion 16a that can be fastened with a flange portion 18f of a band member 18e, which will be described later, at both ends is brought into contact with the close-fitting plug body 15 to prevent it from coming out. The band member 18e and the fastening member 4 are fastened and installed.

このとき、密閉部材1のバンド部材3は撤去し、バンド部材3から分離された分岐部材2、開閉弁5は挿排出装置6に支持された状態となり、密着栓体15は仮固定部材16で押圧保持されて挿入口14の封水状態が維持される。   At this time, the band member 3 of the sealing member 1 is removed, and the branch member 2 and the on-off valve 5 separated from the band member 3 are supported by the insertion / ejection device 6, and the close-fitting plug 15 is a temporary fixing member 16. The sealed state of the insertion port 14 is maintained by being pressed and held.

次に、図16に示すように、仮固定部材16により抜け出しが防止された密着栓体15よりシャフト9を取り外して、ハンドル10bを逆回転させシャフト9を後退させた後、開閉弁5と挿排出フランジ7との接続を解除し、分岐部材2および開閉弁5を撤去する。   Next, as shown in FIG. 16, the shaft 9 is removed from the close-fitting plug body 15 that has been prevented from being pulled out by the temporary fixing member 16, the handle 10 b is rotated reversely, the shaft 9 is moved backward, and then inserted into the on-off valve 5. The connection with the discharge flange 7 is released, and the branch member 2 and the on-off valve 5 are removed.

次いで、図17に示すように、密着栓体15を仮固定部材16により押圧保持した状態で、後述する保護部材18を挿通保持したシャフト9の先端を、作動装置10のハンドル10bを正回転させて送り出し、密着栓体15に当接させてシャフト9により再び押圧保持する。   Next, as shown in FIG. 17, in the state where the tightly plugged member 15 is pressed and held by the temporary fixing member 16, the handle 10 b of the actuator 10 is rotated in the forward direction at the tip of the shaft 9 through which the protective member 18 described later is inserted and held. Then, it is brought into contact with the close-fitting plug body 15 and pressed and held again by the shaft 9.

保護部材18は、半割管形に形成され、バンド部材18eのフランジ部18fに対応するフランジ部18bが設けられており、密着栓体15の外面に当接する押さえ部18cが形成されるとともに、シャフト9を挿通するための挿通口を形成したボス18dが設けられている。   The protective member 18 is formed in a half pipe shape, provided with a flange portion 18b corresponding to the flange portion 18f of the band member 18e, and formed with a pressing portion 18c that contacts the outer surface of the close-fitting plug body 15, A boss 18d having an insertion opening for inserting the shaft 9 is provided.

次いで、図18に示すように、締結部材4をはずして仮固定部材16とバンド部材18eを分離して仮固定部材16を撤去し、シャフト9に挿通保持されている保護部材18を移動させて流体管P外周の片側に当接した状態で、この保護部材18のフランジ部18bとバンド部材18eとが流体管P外周に確実に本固定される。この場合必ずしもバンド部材18eを使用するとは限らず、密閉部材のバンド部材3を使用してもよい。   Next, as shown in FIG. 18, the fastening member 4 is removed, the temporary fixing member 16 and the band member 18e are separated, the temporary fixing member 16 is removed, and the protective member 18 inserted and held in the shaft 9 is moved. The flange portion 18b and the band member 18e of the protective member 18 are securely fixed to the outer periphery of the fluid pipe P in a state where they are in contact with one side of the outer periphery of the fluid pipe P. In this case, the band member 18e is not necessarily used, and the band member 3 as a sealing member may be used.

保護部材18を流体管P外周に水密に取り付けた後、シャフト9、支柱11、11、挟着具12、12、挿排出装置6が取り外され、最後に図19に示すように、保護部材18のボス18d内周にキャップ18aを水密に螺着することで挿入口14が二重に水密に閉鎖され、分岐管Bが分岐管NBに修復交換されて作業が終了する。   After the protective member 18 is attached to the outer periphery of the fluid pipe P in a watertight manner, the shaft 9, the columns 11 and 11, the sandwiching tools 12 and 12, and the insertion / ejection device 6 are removed. Finally, as shown in FIG. The cap 18a is screwed into the inner periphery of the boss 18d in a watertight manner, whereby the insertion port 14 is double watertightly closed, the branch pipe B is repaired and replaced with the branch pipe NB, and the operation is completed.

上記のような修復方法をとれば、流体管Bに溶接することなく保護部材を取り付けることができる。   If the repair method as described above is taken, the protective member can be attached without welding to the fluid pipe B.

また、前記実施例においては、分岐口BEを塞ぐ止水部材8を挿排出する挿排出装置6を使用して、挿入口14を塞ぐ密着栓体15を設置していたが、それぞれ別の装置を用いてもよく、図20に示すような挿排出装置6′で止水部材8を挿排出し、密着栓体15の設置を前記挿排出装置6で行うこともできる。   Moreover, in the said Example, although the close-contact plug 15 which plugs the insertion port 14 was installed using the insertion / extraction apparatus 6 which inserts / discharges the water stop member 8 which plugs the branch port BE, it is each another apparatus. The water stop member 8 can be inserted and discharged with an insertion / extraction device 6 ′ as shown in FIG. 20, and the contact plug 15 can be installed with the insertion / extraction device 6.

挿排出装置6′は、挿排出装置6同様に開閉弁5に取り付ける挿排出フランジ7′と、分岐管Bを閉鎖する止水体8aを有する止水部材8′と、シャフト9′に取り付けられた止水部材8′を挿排出する作動装置10′と、この作動装置10を支持する支柱11′、11′とから構成されている。   The insertion / ejection device 6 ′ is attached to the shaft 9 ′, an insertion / ejection flange 7 ′ attached to the on-off valve 5 as in the insertion / ejection device 6, a water stop member 8 ′ having a water stop body 8 a for closing the branch pipe B, and the like. It comprises an actuating device 10 ′ for inserting and discharging the water stop member 8 ′ and struts 11 ′ and 11 ′ for supporting the actuating device 10.

挿排出フランジ7′は、開閉弁5に水密に取り付けられるフランジが形成され、略中央にシャフト9′が水密に貫通し、止水部材8′を収容することができる凹状の収容部が形成されている。   The insertion / discharge flange 7 ′ is formed with a flange that is watertightly attached to the on-off valve 5, and a shaft 9 ′ penetrates in a watertight manner substantially at the center to form a concave accommodating portion that can accommodate the water stop member 8 ′. ing.

止水部材8′は、分岐管Bの流体管Pとの接続部の分岐口BEの流体管P内周面に当接して止水する弾性体よりなる止水体8aと、シャフト9′に着脱自在に取り付けられ、止水体8aを分岐口BEに押し付けたときの反力を受ける支持体8cと、円錐台に形成され先端中央に設けられた案内部8bとよりなり、止水部材8′の外径は、分岐管Bの内径よりも大きく、かつ、挿入口14よりも小さく設定される。   The water stop member 8 ′ is attached to and detached from the shaft 9 ′ and a water stop body 8 a made of an elastic body that stops water by contacting the inner peripheral surface of the fluid pipe P of the branch port BE of the connection portion of the branch pipe B with the fluid pipe P. A support 8c that is freely attached and receives a reaction force when the waterstop 8a is pressed against the branch port BE, and a guide portion 8b that is formed in a truncated cone and provided at the center of the tip, The outer diameter is set larger than the inner diameter of the branch pipe B and smaller than the insertion port 14.

作動装置10′は、端部に着脱自在にハンドル10′bが設けられ、ハンドル10bを回転することにより回動する送りネジ10′cと、送りネジ10′cを回転可能に支持するガイド部10′aと、略中央にシャフト9が固定され、送りネジ10′cが螺合された固定部材10′dとよりなる。   The actuating device 10 'is provided with a handle 10'b that is detachable at the end, a feed screw 10'c that rotates by rotating the handle 10b, and a guide portion that rotatably supports the feed screw 10'c. 10'a and a fixing member 10'd to which a shaft 9 is fixed substantially at the center and a feed screw 10'c is screwed.

挿排出フランジ7′の中央には、水密に摺動可能なシャフト9′が設けられ、その周囲に固定された一対の支柱11′、11′と回転自在に設けられた送りネジ10′cが略平行に等間隔に立設されている。支柱11′、11′の端部に固定された円盤状のガイド部10′aが、送りネジ10′cの端部を突出させて回転自在に支持している。   In the center of the insertion / ejection flange 7 ′, a water-slidable shaft 9 ′ is provided, and a pair of support pillars 11 ′ and 11 ′ fixed around the shaft 9 ′ and a feed screw 10′c rotatably provided. It is erected substantially equidistantly in parallel. A disc-shaped guide portion 10'a fixed to the end portions of the support columns 11 'and 11' projects the end portion of the feed screw 10'c so as to be rotatably supported.

略中央にシャフト9′を固定した固定部材10′dが、一対の支柱11′、11′に摺動可能に貫通され、また、送りネジ10′cに螺合して取り付けられている。   A fixing member 10'd having a shaft 9 'fixed substantially at the center is slidably inserted into the pair of support posts 11', 11 'and is screwed onto the feed screw 10'c.

シャフト9′は、二重構造に形成され円筒状をなし、流体管P側端部に止水部材8′が固定され、他端部は、二重構造の外筒部が固定部材10′dに固定されている。   The shaft 9 ′ is formed in a double structure and has a cylindrical shape. The water stop member 8 ′ is fixed to the end portion on the fluid pipe P side, and the outer cylinder portion of the double structure is fixed to the fixing member 10 ′ d at the other end portion. It is fixed to.

シャフト9′の内軸は、外筒部に対して回転自在に設けられており、先端にスクレーパーを取り付けて、流体管P内に挿入した後に管内壁に接触させた状態で回転させ、錆び等を取り除くことができるようになっている。   The inner shaft of the shaft 9 'is rotatably provided with respect to the outer cylinder portion, and is attached with a scraper at the tip, inserted into the fluid pipe P, rotated in a state of contacting the pipe inner wall, rust, etc. Can be removed.

送りネジ10′cの端部に取り付けたハンドル10′bを回動すると、送りネジ10′cに螺合している固定部材10′dが支柱11′、11′によって回転不能とされているので支柱11′、11′に案内、支持されながら前後に移動し、固定部材10′dに固定されているシャフト9′も挿排出フランジ7′、開閉弁5を介して流体管Pに挿排出移動し、止水部材8′も挿排出される。   When the handle 10'b attached to the end of the feed screw 10'c is rotated, the fixing member 10'd screwed to the feed screw 10'c is made non-rotatable by the support posts 11 ', 11'. Therefore, the shaft 9 'is moved back and forth while being guided and supported by the columns 11' and 11 ', and the shaft 9' fixed to the fixing member 10'd is also inserted into and discharged from the fluid pipe P through the insertion / discharge flange 7 'and the on-off valve 5. The water stop member 8 'is also inserted and discharged.

挿排出装置は挿入ストロークが流体管Pの管径分長く必要なので挿入口閉塞用の工具と別に設けたほうが工具類は経済的になる。   Since the insertion / ejection device requires an insertion stroke longer than the diameter of the fluid pipe P, it is more economical to provide tools separately from the tool for closing the insertion port.

以上、本発明の実施例を図面により説明してきたが、本発明の具体的な構成はこれに限定されるものではない。   While the embodiments of the present invention have been described with reference to the drawings, the specific configuration of the present invention is not limited to this.

例えば、実施例での、密着栓体は分岐部材とバンド部材を締結部材で着脱自在に設置されているが、分岐部材を溶接して固定してもよい。この場合は、分岐部材のフランジ部に蓋をして保護部材に替えることができる。   For example, in the embodiment, the close-contact plug body has the branching member and the band member detachably installed with the fastening member, but the branching member may be fixed by welding. In this case, the flange portion of the branch member can be covered with a protective member.

また、密着栓体は分岐部材とバンド部材の3分割であったが、2分割、4分割であってもよい。   Moreover, although the close-contact plug body is divided into three parts of the branch member and the band member, it may be divided into two parts and four parts.

本発明に係る分岐管に空気弁が取り付けられている状態を示す説明図。Explanatory drawing which shows the state by which the air valve is attached to the branch pipe which concerns on this invention. 本発明に係る分岐管の修復方法における最初の工程であって、密閉部材を流体管に取り付けた状態を示す説明図。Explanatory drawing which is the first process in the repair method of the branch pipe which concerns on this invention, Comprising: The state which attached the sealing member to the fluid pipe | tube. 穿孔装置を密閉部材に設置し、流体管を穿孔する工程の説明図。Explanatory drawing of the process of installing a perforation apparatus in a sealing member and perforating a fluid pipe. 挿排出装置を取り付る工程の説明図。Explanatory drawing of the process which attaches an insertion / extraction apparatus. 挿排出装置により挿入口から止水部材を挿入し分岐管を止水する工程の説明図。Explanatory drawing of the process which inserts a water stop member from an insertion port with an insertion / extraction apparatus, and water-stops a branch pipe. 止水状態の分岐管を取り外し、新しく補修弁を介した空気弁を取り付けられる新たな分岐管を取り付ける工程の説明図。Explanatory drawing of the process of removing the water stop state branch pipe and attaching the new branch pipe which can be newly attached with the air valve via the repair valve. 流体管に新たな分岐管を取り付け、更に補修弁を介して空気弁を取り付けた状態の説明図。Explanatory drawing of the state which attached the new branch pipe to the fluid pipe | tube, and also attached the air valve via the repair valve. 止水部材に替えて密着栓体を取り付ける工程の説明図。Explanatory drawing of the process which replaces with a water stop member and attaches a contact plug. 密着栓体を挿入口に設置して閉鎖する工程の説明図。Explanatory drawing of the process which installs and closes a close-contact plug body in an insertion port. 密着栓体を仮溶接して抜け出しを防止しする工程の説明図。Explanatory drawing of the process of preventing the coming-out by temporarily welding the close-contact plug. 流体管より密閉部材および挿排出装置を取り外す工程の説明図。Explanatory drawing of the process of removing a sealing member and an insertion / extraction apparatus from a fluid pipe | tube. 保護部材を流体管に固定にする工程の説明図。Explanatory drawing of the process of fixing a protection member to a fluid pipe | tube. 保護部材に充填材を充填した最終工程の説明図。Explanatory drawing of the final process which filled the protective material with the filler. (a)は密着栓体の側面図、(b)は(a)のC−C矢視図、(c)は(a)のD−D断面図である。(A) is a side view of a close-contact plug body, (b) is a CC arrow view of (a), and (c) is a DD cross-sectional view of (a). 仮固定部材を取り付ける工程の説明図。Explanatory drawing of the process of attaching a temporary fixing member. 仮固定部材により密着栓体の抜け出しを防止して密閉部材を取り外す工程の説明図。Explanatory drawing of the process which prevents the adhesion | attachment plug body from pulling out with a temporary fixing member, and removes a sealing member. 保護部材をシャフトに挿通し、シャフトで密着栓体の抜け出しを防止する工程の説明図。Explanatory drawing of the process which inserts a protection member in a shaft and prevents the sticking plug body from coming out with the shaft. 仮固定部材を取り外したのちに保護部材を流体管に固定にする工程の説明図。Explanatory drawing of the process of fixing a protection member to a fluid pipe | tube after removing a temporary fixing member. 挿排出装置を取り外し、キャップを設置した最終工程の説明図。Explanatory drawing of the last process which removed the insertion / extraction apparatus and installed the cap. (a)は別の挿排出装置のE−E断面図、(b)は(a)の底面図である。(A) is EE sectional drawing of another insertion / extraction apparatus, (b) is a bottom view of (a).

符号の説明Explanation of symbols

1 密閉部材
2 分岐部材
2a 分岐管部
2b 分岐フランジ
2c フランジ部
3 バンド部材
3a バンド部
3b フランジ部
4 締結部材
5 開閉弁
5a 弁体
6、6′ 挿排出装置(挿排出手段)
7、7′ 挿排出フランジ
8、8′ 止水部材
8a 止水体
8b 案内部
8c 支持体
9、9′ シャフト
10、10′ 作動装置
10a ガイド部
10b ハンドル
10c 送りネジ(螺合部材)
10d 固定部材
10e スピンドル
10f 角頭部
11、11′ 支柱
12 挟着具
13 穿孔機(穿孔装置)
13a ホールソーカッター
13b ハンドル
14 挿入口
15 密着栓体
15a 止水体
15b 押圧体
15c 支持体
15d 回転体
15e ネジ軸
15f 突起部
15g ネジ孔
16 仮固定部材
16a フランジ部
17 保護部材
17a キャップ部
17b 補強部
17c 保持部材
18 保護部材
18a キャップ
18b フランジ部
18c 押さえ部
18d ボス
18e バンド部材
18f フランジ部
P 流体管(既設管)
B 分岐管
NB 分岐管
NBa 補強部
NBb リブ
BE 分岐口
AV 空気弁
V 補修弁

DESCRIPTION OF SYMBOLS 1 Sealing member 2 Branch member 2a Branch pipe part 2b Branch flange 2c Flange part 3 Band member 3a Band part 3b Flange part 4 Fastening member 5 On-off valve 5a Valve body 6, 6 'Insertion / extraction device (insertion / extraction means)
7, 7 'Insertion / ejection flange 8, 8' Water stop member 8a Water stop body 8b Guide portion 8c Support body 9, 9 'Shaft 10, 10' Actuator 10a Guide portion 10b Handle 10c Feed screw (screwing member)
10d Fixing member 10e Spindle 10f Square head 11, 11 'Post 12 Clamping tool 13 Drilling machine (drilling device)
13a Hole saw cutter 13b Handle 14 Insertion port 15 Close plug 15a Water stop 15b Press 15c Support 15d Rotating body 15e Screw shaft 15f Projection 15g Screw hole 16 Temporary fixing member 16a Flange 17 Protective member 17a Cap 17b Reinforcement 17c Holding member 18 Protective member 18a Cap 18b Flange portion 18c Holding portion 18d Boss 18e Band member 18f Flange portion P Fluid pipe (existing pipe)
B Branch pipe NB Branch pipe NBa Reinforcement part NBb Rib BE Branch port AV Air valve V Repair valve

Claims (6)

既設管より枝分かれした分岐管を、前記既設管に対して不断流状態で修復する分岐管の修復方法であって、
前記既設管に開閉弁を有する密閉部材を水密に取り付ける工程と、前記密閉部材に取り付けた穿孔装置により、前記開閉弁を介して前記既設管に挿入口を穿孔する工程と、前記穿孔装置に替えて前記密閉部材に取り付けた挿排出手段により、前記挿入口より止水部材を既設管内に挿入して分岐口を閉塞し、既設管から分岐管側への流れを止める工程と、止水された状態の前記分岐管を既設管より除去した後、分岐口に新たに分岐管を接続する工程と、前記止水部材を前記挿排出手段により前記既設管より排出した後、前記挿入口を閉塞する工程と、からなることを特徴とする分岐管の修復方法。
A branch pipe repairing method for repairing a branch pipe branched from an existing pipe in an uninterrupted state with respect to the existing pipe,
A step of attaching a sealing member having an opening / closing valve to the existing pipe in a watertight manner, a step of punching an insertion port in the existing pipe through the opening / closing valve by a punching device attached to the sealing member, and a replacement of the punching device. And inserting and discharging means attached to the sealing member to insert the water-stopping member into the existing pipe from the insertion port to close the branch port and stop the flow from the existing pipe to the branch pipe side, After removing the branch pipe in the state from the existing pipe, a step of newly connecting the branch pipe to the branch opening, and after discharging the water stop member from the existing pipe by the insertion / extraction means, the insertion opening is closed. And a branch pipe repairing method comprising the steps of:
前記挿入口は、既設管の分岐管における分岐口に対向する位置に穿孔する請求項1に記載の分岐管の修復方法。   The method of repairing a branch pipe according to claim 1, wherein the insertion opening is drilled at a position facing the branch opening in the branch pipe of the existing pipe. 前記挿排出手段は、前記開閉弁に水密に取り付けた挿排出フランジと、前記止水部材を挿排出する作動装置と、該作動装置を支持する支柱とで構成されている請求項1または2に記載の分岐管の修復方法。   The said insertion / extraction means is comprised by the insertion / extraction flange attached to the said on-off valve watertightly, the operating device which inserts / discharges the said water stop member, and the support | pillar which supports this operating device. The method for repairing a branch pipe as described. 前記作動装置は、止水部材が一方の端部に装着されるシャフトと、前記シャフトの他方の端部を固定支持する固定部材と、ハンドルの回転で前記固定部材を進退移動する螺合部材とで構成されている請求項3に記載の分岐管の修復方法。   The actuating device includes a shaft on which a water stop member is mounted at one end, a fixing member that fixes and supports the other end of the shaft, and a screwing member that moves the fixing member forward and backward by rotation of a handle. The repair method of the branch pipe of Claim 3 comprised by these. 前記止水部材は、前記分岐管における分岐口の少なくとも流体管内周面に当接して密着する止水体と、前記止水体を押圧する反力を受ける支持体とで構成されている請求項1ないし4に記載の分岐管の修復方法。   The said water stop member is comprised by the water stop body which contact | abuts and adhere | attaches at least the fluid pipe inner peripheral surface of the branch port in the said branch pipe, and the support body which receives the reaction force which presses the said water stop body. 5. The method for repairing a branch pipe according to 4. 前記挿排出手段により前記止水部材を排出した後に、密着栓体で前記挿入口を閉塞し、該密着栓体を水密に覆う保護部材を既設管に取り付ける請求項1ないし5に記載の分岐管の修復方法。
The branch pipe according to any one of claims 1 to 5, wherein after the water-stopping member is discharged by the insertion / discharge means, the insertion port is closed with a close plug and a protective member that covers the close plug is attached to an existing pipe. Repair method.
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Cited By (4)

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JP2013190087A (en) * 2012-03-15 2013-09-26 Cosmo Koki Co Ltd Branch opening communicating method
JP2013245759A (en) * 2012-05-25 2013-12-09 Cosmo Koki Co Ltd Method of removing pipe connection member
JP2021071141A (en) * 2019-10-29 2021-05-06 アロン化成株式会社 Branch pipe connection member, branch pipe connection structure, and branch pipe connection method
TWI827444B (en) * 2023-01-13 2023-12-21 幻象冷氣空調工程有限公司 Intubation equipment and methods

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CN105020532A (en) * 2015-08-06 2015-11-04 海宁艾可炫照明电器有限公司 Novel on-line working device

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JP2013190087A (en) * 2012-03-15 2013-09-26 Cosmo Koki Co Ltd Branch opening communicating method
JP2013245759A (en) * 2012-05-25 2013-12-09 Cosmo Koki Co Ltd Method of removing pipe connection member
JP2021071141A (en) * 2019-10-29 2021-05-06 アロン化成株式会社 Branch pipe connection member, branch pipe connection structure, and branch pipe connection method
JP7355603B2 (en) 2019-10-29 2023-10-03 アロン化成株式会社 Branch pipe connection member, branch pipe connection structure, and branch pipe connection method
TWI827444B (en) * 2023-01-13 2023-12-21 幻象冷氣空調工程有限公司 Intubation equipment and methods

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