JP4603312B2 - Sealing unit used for pipe rehabilitation connection method - Google Patents

Sealing unit used for pipe rehabilitation connection method Download PDF

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JP4603312B2
JP4603312B2 JP2004231225A JP2004231225A JP4603312B2 JP 4603312 B2 JP4603312 B2 JP 4603312B2 JP 2004231225 A JP2004231225 A JP 2004231225A JP 2004231225 A JP2004231225 A JP 2004231225A JP 4603312 B2 JP4603312 B2 JP 4603312B2
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pipe
rehabilitation
existing
sealing unit
manhole
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JP2006046592A (en
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孝 島貫
英也 竹西
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Sekisui Chemical Co Ltd
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Description

本発明は、例えば既設管をライニングした更生管と他の既設管とを接続する場合などに適用される管路更生接続方法に使用される封止ユニットに関する。 The present invention relates to a sealing unit used in a pipeline rehabilitation connection method applied when, for example, a rehabilitation pipe lined with an existing pipe is connected to another existing pipe.

一般に、地中に埋設されている管路が老朽化した場合には、この管路内面を樹脂製の更生管でライニングして管路を補強することが行われている。例えば下記の特許文献１には、熱可塑性樹脂製であって形状回復温度において円筒形に形状回復するように襞状に縮退させた断面形状を呈する更生管を使用した更生方法が開示されている。   Generally, when a pipe line buried in the ground is aged, the inner surface of the pipe line is lined with a resin rehabilitation pipe to reinforce the pipe line. For example, Patent Document 1 below discloses a rehabilitation method using a rehabilitation pipe made of a thermoplastic resin and exhibiting a cross-sectional shape that is degenerated into a bowl shape so as to recover a cylindrical shape at a shape recovery temperature. .

この更生方法の作業手順について以下に説明する。先ず、襞状に縮退させた断面形状の更生管の一端を閉塞金具などによって閉塞した状態で、この閉塞側から更生管をマンホールを通して既設管内に引き込む。その後、この更生管の他端を蒸気などによって加熱し、部分的に円筒形に形状回復させる。そして、この形状回復した端部に封止ユニットを装着する。この封止ユニットは、例えば、図１３に示すように、スチーム供給管ｂ及びエア供給管ｃを備えたインナコアｄと、このインナコアｄが更生管ｐの端部に装着された状態で更生管ｐの外周面に装着されてインナコアｄの抜け止めを行うリング材ｅとを備えている。このようにして更生管ｐの端部に封止ユニットａを装着した後、スチーム供給管ｂから更生管ｐの内部に蒸気を供給し、この更生管ｐの全体を加熱して円筒形に形状回復させる。更生管ｐから蒸気を抜いた後、エア供給管ｃから更生管ｐの内部に加圧エアを供給し、更生管ｐを拡径させてその外面を既設管の内面に密着させる。その後、上記閉塞金具及び封止ユニットａを更生管ｐから取り外し、更生管の端部処理を行ってライニング作業を終了する。   The work procedure of this rehabilitation method will be described below. First, in a state where one end of a rehabilitation pipe having a cross-sectional shape that has been degenerated into a bowl shape is closed with a closing metal fitting or the like, the rehabilitation pipe is drawn into the existing pipe from the closing side through a manhole. Thereafter, the other end of the rehabilitation pipe is heated with steam or the like to partially recover its shape into a cylindrical shape. Then, the sealing unit is mounted on the end portion whose shape has been recovered. For example, as shown in FIG. 13, the sealing unit includes an inner core d provided with a steam supply pipe b and an air supply pipe c, and the rehabilitation pipe p in a state where the inner core d is attached to an end of the rehabilitation pipe p. And a ring member e that prevents the inner core d from coming off. After mounting the sealing unit a on the end of the rehabilitation pipe p in this way, steam is supplied from the steam supply pipe b to the inside of the rehabilitation pipe p, and the whole rehabilitation pipe p is heated to form a cylindrical shape. Let me recover. After removing steam from the rehabilitation pipe p, pressurized air is supplied from the air supply pipe c to the inside of the rehabilitation pipe p, the diameter of the rehabilitation pipe p is increased, and the outer surface thereof is brought into close contact with the inner surface of the existing pipe. Then, the said closure metal fitting and the sealing unit a are removed from the renovation pipe p, the edge part process of a renovation pipe is performed, and a lining operation | work is complete | finished.

一方、農業用水などの管路である有圧管にあっては、管端がマンホール内で開放していると、このマンホール内の貯水量が増大した場合に、マンホールから水が溢れ出てしまう可能性がある。このため、この種の管路では、マンホール内に臨む２本の配管（上流側配管と下流側配管）の管端同士を短管状の継手部材によって接続することが行われている。   On the other hand, in the case of a pressure pipe that is a conduit for agricultural water or the like, if the pipe end is open in the manhole, the water may overflow from the manhole if the amount of water stored in the manhole increases. There is sex. For this reason, in this type of pipeline, the pipe ends of two pipes (upstream pipe and downstream pipe) facing the manhole are connected by a short tubular joint member.

このため、例えばマンホール内に臨む２本の配管のうちの一方を更生管によってライニングした場合には、この更生管の管端と更生されていない側の既設管の管端とをマンホール内で継手部材によって接続する必要がある。   For this reason, for example, when one of the two pipes facing the manhole is lined with a rehabilitation pipe, the pipe end of the rehabilitation pipe and the pipe end of the existing pipe not rehabilitated are joined in the manhole. It is necessary to connect by members.

図１４は、更生管ｐと既設管ｆとをマンホールｇ内で継手部材ｈによって接続した従来の構成を示している。この図に示すように、既設管ｆの管径は予め決まっているため、継手部材ｈの一端（既設管ｆに接続する側の図中左側端部）の内径は、この既設管ｆの外径寸法に略一致して設定されている。一方、他端側である更生管ｐに接続する側の端部（図中右側端部）にあっては、更生管ｐの仕上がり径にバラツキが生じることを考慮し、内径が予め大きく設定してある。そして、この継手部材ｈの他端側の端部内に更生管ｐの管端を挿入した状態で、この更生管ｐの外面と継手部材ｈの内面との間をモルタルｉによって埋めていた。
特開２００２−３０３３７６号公報 FIG. 14 shows a conventional configuration in which the rehabilitated pipe p and the existing pipe f are connected by a joint member h in the manhole g. As shown in this figure, since the pipe diameter of the existing pipe f is determined in advance, the inner diameter of one end of the joint member h (the left end portion in the drawing on the side connected to the existing pipe f) is outside the existing pipe f. It is set to approximately match the diameter. On the other hand, in the end portion (the right end portion in the figure) connected to the rehabilitation pipe p which is the other end side, the inner diameter is set to be large in advance in consideration of variations in the finished diameter of the rehabilitation pipe p. It is. And between the outer surface of this renovated pipe p and the inner surface of the joint member h was filled with the mortar i in the state which inserted the pipe end of the renovated pipe p in the edge part of the other end side of this joint member h.
JP 2002-303376 A

しかしながら、上述した如く更生管ｐと継手部材ｈとの間をモルタルｉによって埋める場合、モルタルｉが管路内に流れ込んでしまって（図中矢印参照）管路の有効内径を縮小させてしまう可能性がある。また、この施工後に水（圧力水）を流した場合に、モルタルｉに割れが生じて漏水が発生してしまう虞もあった。   However, when the space between the rehabilitated pipe p and the joint member h is filled with the mortar i as described above, the mortar i may flow into the pipe (see the arrow in the figure) and reduce the effective inner diameter of the pipe. There is sex. Further, when water (pressure water) is flowed after the construction, there is a possibility that the mortar i is cracked and water leakage occurs.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、更生管の管端と他の配管の管端とを接続する場合において、接続作業が容易であり且つ信頼性の高い接続状態を得ることができる管路更生接続方法に使用される封止ユニットを提供することにある。 The present invention has been made in view of such points, and the object of the present invention is to facilitate connection work and reliability when connecting the pipe end of the rehabilitation pipe and the pipe end of another pipe. An object of the present invention is to provide a sealing unit used in a pipe rehabilitation connection method capable of obtaining a high connection state.

−発明の概要−
上記の目的を達成するために講じられた本発明の解決手段は、更生管による既設管の更生作業（ライニング）時にこの更生管の内部を密封するための部材を利用し、この更生管の管端と他の配管の管端とを接続するようにしている。つまり、更生管の内部を密封するための封止ユニットを複数の構成部材で成し、この封止ユニットの一部の部材を他の部材に連結するための構成をそのまま使用して、この他の部材と継手管との連結構造が得られるようにしている。 -Summary of invention-
The solution of the present invention devised to achieve the above object uses a member for sealing the inside of the rehabilitating pipe at the time of rehabilitation work (lining) of the existing pipe by the rehabilitating pipe. The end is connected to the pipe end of another pipe. In other words, a sealing unit for sealing the inside of the rehabilitation pipe is composed of a plurality of constituent members, and a configuration for connecting a part of the sealing unit to other members is used as it is. A connection structure between the member and the joint pipe is obtained.

−解決手段−
具体的に、本発明は、既設管の内面を更生管によってライニングすると共に、この更生管の管端と他の配管の管端とを、それぞれの管路同士を連通させた状態で接続する方法を前提とする。この管路更生接続方法に対し、更生工程と配管継ぎ工程とを備えさせる。更生工程では、上記更生管の管端に装着される略円環形状の第１部材と、この更生管の管端の開口を閉塞する第２部材とを備えた封止ユニットを更生管の管端に取り付け、更生管を既設管の内部に引き込んだ状態で更生管の内部に加圧流体を導入して更生管を拡径し、既設管の内面に更生管を密着させて既設管の更生を行う。配管継ぎ工程では、上記更生工程の後、更生管の管端から第２部材のみを取り外し、更生管の管端と他の配管の管端との間に継手管を配置して、この継手管と第１部材とを連結する。 -Solution-
Specifically, the present invention is a method of lining the inner surface of an existing pipe with a rehabilitation pipe and connecting the pipe end of the rehabilitation pipe and the pipe end of another pipe in a state where the respective pipe lines are in communication with each other. Assuming A rehabilitation step and a pipe splicing step are provided for this pipe rehabilitation connection method. In the rehabilitation process, a sealing unit including a first ring-shaped first member attached to the end of the rehabilitating pipe and a second member for closing the opening of the rehabilitating pipe is connected to the rehabilitating pipe. At the end, with the rehabilitation pipe drawn into the existing pipe, introduce the pressurized fluid into the rehabilitation pipe to expand the diameter of the rehabilitation pipe, and reattach the rehabilitation pipe to the inner surface of the existing pipe. I do. In the pipe joining process, after the rehabilitation process, only the second member is removed from the pipe end of the rehabilitation pipe, and a joint pipe is disposed between the pipe end of the rehabilitation pipe and the pipe end of another pipe. And the first member are coupled.

この特定事項により、封止ユニットにおける第１部材の第２部材に対する連結構造をそのまま利用して、第１部材と継手管とを連結することが可能になる。例えば、第１部材と第２部材とが、それぞれに形成されたボルト孔によってボルト止めされている場合に、継手管にも同様のボルト孔を形成しておき、第２部材を第１部材から取り外した後に、第１部材のボルト孔と継手管のボルト孔とを位置合わせしてこれらをボルト止めする等といった構成が採用される。   By this specific matter, it becomes possible to connect the first member and the joint pipe using the connection structure of the first member to the second member in the sealing unit as it is. For example, when the first member and the second member are bolted by the bolt holes formed respectively, the same bolt hole is formed in the joint pipe, and the second member is removed from the first member. After the removal, a configuration in which the bolt hole of the first member and the bolt hole of the joint pipe are aligned and bolted, etc. is employed.

また、本発明に係る管路接続方法が適用される一形態として、マンホール内に臨む２本の（一方が更生管によって更生されている）配管同士を連結することが掲げられる。この場合の上記各工程として、詳しくは、更生工程において更生管がマンホールを通じて既設管の内部に引き込まれるようになっている。また、配管継ぎ工程では、マンホール内に継手管を導入して、この継手管の一方の管端をマンホール内に臨む非更生状態の既設管に連結し、他方の管端を更生管に装着された第１部材に連結するようにしている。   Further, as one form to which the pipe connection method according to the present invention is applied, it is listed that two pipes (one is rehabilitated by a rehabilitation pipe) facing each other in a manhole are connected. Specifically, as each of the above steps in this case, the rehabilitation pipe is drawn into the existing pipe through the manhole in the rehabilitation process. In the pipe splicing process, a joint pipe is introduced into the manhole, and one end of the joint pipe is connected to an existing pipe that is not rehabilitated facing the manhole, and the other pipe end is attached to the rehabilitation pipe. The first member is connected to the first member.

尚、上述した管路更生接続方法に使用される封止ユニットは、更生管の管端内部に嵌め込まれる略筒型形状のドラム部及び更生管の管端外側において外周側に広がるフランジ部を備えた第１部材と、外径寸法が前記フランジ部の外径寸法に略一致する円盤状であってこのフランジ部に重ね合わされることによって更生管の管端の開口を閉塞する第２部材とを備えた封止ユニットである。 The sealing units used pipe rehabilitation connection method described above, the flange portion extending on the outer peripheral side in the tube end outer drum portion and the rehabilitating pipe having a substantially tubular shape to be fitted inside the tube end of the further Namakan And a second member that has a disk shape whose outer diameter dimension substantially coincides with the outer diameter dimension of the flange portion, and that is overlapped with the flange portion to close the opening of the pipe end of the rehabilitation pipe. Is a sealing unit.

本発明では、更生管の内部を密封するための封止ユニットを利用し、この更生管の管端と他の配管の管端とを接続するようにしている。つまり、封止ユニットを構成する第２部材を第１部材から取り外した後に、この更生管の管端に残った第１部材を利用して継手管を連結するようにしている。従来では、更生管と継手との間をモルタルによって埋めていたため、モルタルが管路内に流れ込んでしまったり、モルタルが割れてしまうといった不具合があったが、本発明によれば、この不具合を解消することができ、接続作業が容易であり且つ信頼性の高い接続状態を得ることができる。   In the present invention, a sealing unit for sealing the inside of the rehabilitated pipe is used, and the pipe end of the rehabilitated pipe is connected to the pipe end of another pipe. That is, after removing the 2nd member which comprises a sealing unit from the 1st member, a joint pipe is connected using the 1st member remaining at the pipe end of this renovated pipe. Conventionally, since the gap between the rehabilitated pipe and the joint was filled with mortar, there was a problem that the mortar flowed into the pipe line or the mortar was broken, but according to the present invention, this problem is solved. Therefore, the connection operation is easy and a reliable connection state can be obtained.

以下、本発明の実施の形態を図面に基づいて説明する。本発明は、マンホール内における更生管と既設管との接続部分に本発明を適用した場合について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. This invention demonstrates the case where this invention is applied to the connection part of the renovated pipe and the existing pipe in a manhole.

（第１実施形態）
先ず、第１実施形態について説明する。本発明に係る管路接続方法について説明する前に、マンホール内に臨む２本の既設管のうちの一方に対する更生管による更生動作について説明する。 (First embodiment)
First, the first embodiment will be described. Before describing the pipe connection method according to the present invention, the rehabilitation operation by the rehabilitation pipe for one of the two existing pipes facing the manhole will be described.

図１は既設管を更生するための更生管１の更生作業前の状態を示している。この更生管１は、塩化ビニル樹脂などの熱可塑性樹脂材料よりなり、外面に長手方向に沿って延びる凹部１１を有するように変形されて断面外形面積が小さくなる襞状に縮退させた形状に成形されている。   FIG. 1 shows a state before rehabilitation work of a rehabilitation pipe 1 for rehabilitating an existing pipe. The rehabilitation pipe 1 is made of a thermoplastic resin material such as vinyl chloride resin, and is deformed so as to have a recess 11 extending along the longitudinal direction on the outer surface, and is formed into a degenerated shape having a reduced cross-sectional outer area. Has been.

また、この更生管１は、所定の形状回復温度（例えば８０℃）に加熱されることによって円筒体に形状回復する性能を有している。この場合、形状回復温度とは、圧力などの外力を作用させることなく、加熱のみで円筒形に形状回復する温度のことである。   Further, the rehabilitation pipe 1 has a performance of recovering its shape to a cylindrical body by being heated to a predetermined shape recovery temperature (for example, 80 ° C.). In this case, the shape recovery temperature is a temperature at which the shape is recovered to a cylindrical shape only by heating without applying an external force such as pressure.

この更生管１の製造方法は以下の通りである。図２に示すように、先ず、押出機２１にて熱可塑性樹脂材料の円筒体１０を押出成形し、その円筒体１０を冷却水槽２２中に通過させて冷却し、変形装置２３にて、形状回復温度の雰囲気中で外面を押し潰して、図１に示す如く外面に長手方向に沿って延びる凹部１１を形成する。その後、断面外形面積が減少するように引張装置２４にて円筒体１０を引っ張り、この円筒体１０を、トラバース部２５を経由して、ドラム２６上に巻き取る。   The manufacturing method of this rehabilitation pipe | tube 1 is as follows. As shown in FIG. 2, first, a cylindrical body 10 of a thermoplastic resin material is extruded by an extruder 21, and the cylindrical body 10 is cooled by passing it through a cooling water tank 22. The outer surface is crushed in an atmosphere of a recovery temperature, and a recess 11 extending along the longitudinal direction is formed on the outer surface as shown in FIG. Thereafter, the cylindrical body 10 is pulled by the tensioning device 24 so that the cross-sectional outer area is reduced, and the cylindrical body 10 is wound on the drum 26 via the traverse portion 25.

このようにして製造された更生管１は、既設管の更生現場に搬入されるまでの間は、外気温の影響を受けて管自身が「自然形状回復」することがないように、拘束手段を用いて拘束するか、低温保管することが好ましい。   The rehabilitating pipe 1 manufactured in this way is restrained so that the pipe itself does not “recover naturally” under the influence of the outside air temperature until it is carried into the rehabilitation site of the existing pipe. It is preferable to constrain using or to store at low temperature.

次に、既設管の更生作業について説明する。ここでは、図３に示すように、上流側マンホールＱ１（図３において左側に位置するマンホール）と下流側マンホールＱ２（図３において右側に位置するマンホール）との間に埋設されている既設管３を更生する場合について説明する。   Next, rehabilitation work for existing pipes will be described. Here, as shown in FIG. 3, the existing pipe 3 embedded between the upstream manhole Q1 (manhole located on the left side in FIG. 3) and the downstream manhole Q2 (manhole located on the right side in FIG. 3). The case of rehabilitation will be described.

上流側マンホールＱ１付近の地上には、上記ドラム２６上に巻き取られた更生管１が搬入されている。一方、下流側マンホールＱ２付近の地上には、ウィンチ５１が配設されている。又、下流側マンホールＱ２の下部には更生管１を牽引するワイヤ５４を案内するためのガイド部５２が設けられている。尚、更生管１を既設管３に挿入するのに先立って、予め、既設管３の内部を洗浄し且つ突出物を除去しておく。   The rehabilitation pipe 1 wound on the drum 26 is carried on the ground near the upstream manhole Q1. On the other hand, a winch 51 is disposed on the ground near the downstream manhole Q2. A guide portion 52 for guiding the wire 54 that pulls the rehabilitation pipe 1 is provided at the lower portion of the downstream manhole Q2. Prior to inserting the rehabilitation pipe 1 into the existing pipe 3, the inside of the existing pipe 3 is washed in advance and the protrusions are removed.

そして、更生管敷設工程として、図３に示すように、ウインチ５１から導出されるワイヤ５４の先端を、下流側マンホールＱ２の下端から既設管３内を経て上流側マンホールＱ１に導いておく。それから、ドラム２６を回転させ、更生管１の先端を上流側マンホールＱ１の下端つまり既設管３の上流側端まで導出させる。   Then, as a rehabilitation pipe laying step, as shown in FIG. 3, the tip of the wire 54 led out from the winch 51 is led from the lower end of the downstream manhole Q2 through the existing pipe 3 to the upstream manhole Q1. Then, the drum 26 is rotated, and the tip of the rehabilitation pipe 1 is led out to the lower end of the upstream manhole Q1, that is, the upstream end of the existing pipe 3.

そして、更生管１の先端に予め取り付けておいた先端具５３にワイヤ５４の先端を係止する。その後、ドラム２６から送り出された更生管１の先端を既設管３の内部に挿入した状態で、ウィンチ５１によってワイヤ５４を巻き取ることにより更生管１を牽引し、更生管１を既設管３の内部に引き込んでいく。この引き込み途中において、更生管１を切断し、この切断部分に後述する封止ユニット６を取り付けておく。   And the front-end | tip of the wire 54 is latched to the front-end | tip tool 53 previously attached to the front-end | tip of the rehabilitation pipe | tube 1. FIG. Thereafter, with the tip of the rehabilitation pipe 1 fed out from the drum 26 being inserted into the existing pipe 3, the rehabilitation pipe 1 is pulled by winding the wire 54 with the winch 51, and the rehabilitation pipe 1 is removed from the existing pipe 3. Pull inside. In the middle of this drawing, the rehabilitation pipe 1 is cut, and a sealing unit 6 described later is attached to this cut portion.

この動作により、更生管１を、上流側マンホールＱ１側から下流側マンホールＱ２側まで導いて、上流側マンホールＱ１と下流側マンホールＱ２との間を結ぶ既設管３内の全長に亘って敷設する。この際の既設管３内における更生管１の配置状態を図４（ａ）に示す。   By this operation, the rehabilitation pipe 1 is led from the upstream manhole Q1 side to the downstream manhole Q2 side and laid over the entire length of the existing pipe 3 connecting the upstream manhole Q1 and the downstream manhole Q2. The arrangement | positioning state of the renovated pipe 1 in the existing pipe 3 in this case is shown to Fig.4 (a).

その後、ライニング工程に進む。このライニング工程では、図５に示すように、上流側マンホールＱ１付近の地上に、蒸気発生・加圧器５５を配設し、下流側マンホールＱ２付近の地上に水・蒸気分離器５６を配設する。更生管１に取り付けた封止ユニット６に蒸気発生・加圧器５５から延びるホース５５ａを連結するともに、更生管１先端の先端具５３に水・蒸気分離器５６から延びるホース５６ａを連結する。   Then, it progresses to a lining process. In this lining process, as shown in FIG. 5, a steam generator / pressurizer 55 is disposed on the ground near the upstream manhole Q1, and a water / steam separator 56 is disposed on the ground near the downstream manhole Q2. . A hose 55 a extending from the steam generator / pressurizer 55 is connected to the sealing unit 6 attached to the rehabilitation pipe 1, and a hose 56 a extending from the water / steam separator 56 is connected to the tip tool 53 at the tip of the rehabilitation pipe 1.

この状態で、蒸気発生・加圧器５５より更生管１内に蒸気を連続的に供給し、その蒸気を水・蒸気分離器５６へ流下させつつ、更生管１をその内部より形状回復温度まで加熱して、略元の円筒体に形状回復させる。この際の既設管３内における更生管１の状態を図４（ｂ）に示す。   In this state, steam is continuously supplied from the steam generator / pressurizer 55 into the rehabilitation pipe 1, and the rehabilitation pipe 1 is heated from its inside to the shape recovery temperature while flowing down to the water / steam separator 56. Then, the shape is restored to a substantially original cylindrical body. The state of the renovated pipe 1 in the existing pipe 3 at this time is shown in FIG.

このようにして更生管１を円筒体に形状回復させた後、先端具５３を密閉状態にし、その更生管１の内部に蒸気発生・加圧器５５より加熱圧縮空気を送って、更生管１を、その内部より加熱加圧膨張させて既設管３の内面に密着させ（この際の既設管３内における更生管１の状態を図４（ｃ）に示す）、この加圧状態にて、冷却固定して、既設管３の内面のライニング作業を終了する。   After rehabilitating the rehabilitating tube 1 to a cylindrical body in this way, the tip 53 is sealed and heated compressed air is sent into the rehabilitating tube 1 from the steam generator / pressurizer 55 to rehabilitate the rehabilitating tube 1. Then, it is heated and pressurized from the inside to be brought into close contact with the inner surface of the existing pipe 3 (the state of the rehabilitated pipe 1 in the existing pipe 3 at this time is shown in FIG. 4 (c)). After fixing, the lining operation of the inner surface of the existing pipe 3 is completed.

次に、更生管１の端部に取り付けられる封止ユニット６について説明する。図６は、この封止ユニット６が更生管１の端部に取り付けられる際の状態を示す分解斜視図である。この図に示すように、封止ユニット６は、更生管１の管端に装着されるインナ部材６１と、このインナ部材６１に取り付けられる閉塞栓部材６２と、インナ部材６１が更生管１から抜け落ちることを防止するバンド６３を備えている。   Next, the sealing unit 6 attached to the end part of the rehabilitation pipe 1 will be described. FIG. 6 is an exploded perspective view showing a state when the sealing unit 6 is attached to the end portion of the rehabilitation pipe 1. As shown in this figure, the sealing unit 6 includes an inner member 61 attached to the pipe end of the rehabilitation pipe 1, a closing plug member 62 attached to the inner member 61, and the inner member 61 falls off the rehabilitation pipe 1. A band 63 is provided to prevent this.

上記インナ部材６１は、更生管１の管端の内径寸法に略一致する外径寸法を有する筒型形状のドラム部６１ａと、このドラム部６１ａの一端縁から外周側に広がるフランジ部６１ｂとを備えている。このフランジ部６１ｂには、周方向に所定角度間隔を存した複数箇所（本形態では８箇所）に貫通孔で成るボルト孔６１ｃ，６１ｃ，…が形成されている。   The inner member 61 includes a cylindrical drum portion 61a having an outer diameter that substantially matches the inner diameter of the tube end of the rehabilitation pipe 1, and a flange portion 61b that extends from one end edge of the drum portion 61a to the outer peripheral side. I have. The flange portion 61b is formed with bolt holes 61c, 61c,... That are through-holes at a plurality of locations (eight locations in the present embodiment) at predetermined angular intervals in the circumferential direction.

また、上記ドラム部６１ａの先端部（フランジ部６１ｂが形成されている側とは反対側の端部）には、山型に外周側に僅かに突出した返り部６１ｄが形成されており、更生管１に装着された際に容易には抜け落ちないようになっている。   Further, a return portion 61d is formed in a chevron-like shape at the front end portion (the end portion opposite to the side where the flange portion 61b is formed) of the drum portion 61a. When attached to the tube 1, it does not fall off easily.

一方、閉塞栓部材６２は、外径寸法が上記フランジ部６１ｂの外径寸法に略一致する金属製の円盤状の部材であって、その外周縁部には、このフランジ部６１ｂに重ね合わされた際に上記ボルト孔６１ｃ，６１ｃ，…の形成位置に一致する箇所に同様のボルト孔６２ａ，６２ａ，…が形成されている。このため、この閉塞栓部材６２がインナ部材６１のフランジ部６１ｂに重ね合わされ、且つそれぞれのボルト孔６１ｃ、６２ａに亘ってボルトが挿通され、このボルトにナットがねじ込まれた状態では、閉塞栓部材６２がインナ部材６１に一体的に組み付けられると共に、このインナ部材６１の開口（ドラム部６１ａの内側の空間）が閉塞栓部材６２によって閉塞されることになる。また、この閉塞栓部材６２には、上記蒸気発生・加圧器５５から延びるホース５５ａを連結するためのエルボ６２ｂ（図８参照）が取り付けられている（図６では図示省略）。   On the other hand, the closing plug member 62 is a metal disk-like member whose outer diameter dimension substantially matches the outer diameter dimension of the flange portion 61b, and is overlapped with the flange portion 61b at the outer peripheral edge portion. At the same time, similar bolt holes 62a, 62a,... Are formed at locations that coincide with the formation positions of the bolt holes 61c, 61c,. For this reason, the plug member 62 is overlapped with the flange portion 61b of the inner member 61, and bolts are inserted through the respective bolt holes 61c and 62a. 62 is integrally assembled with the inner member 61, and the opening (the space inside the drum portion 61 a) of the inner member 61 is closed by the closing plug member 62. An elbow 62b (see FIG. 8) for connecting a hose 55a extending from the steam generator / pressurizer 55 is attached to the plug member 62 (not shown in FIG. 6).

バンド６３は、インナ部材６１のドラム部６１ａが更生管１の内部に挿入された状態で、更生管１の外面側から内周側に向けて締め付けられ、これによって更生管１の内面をドラム部６１ａの返り部６１ｄに強固に係合させてインナ部材６１が更生管１から抜け落ちることを防止するものである。   The band 63 is tightened from the outer surface side to the inner peripheral side of the rehabilitation tube 1 in a state where the drum portion 61a of the inner member 61 is inserted into the rehabilitation tube 1, whereby the inner surface of the rehabilitation tube 1 is connected to the drum portion. The inner member 61 is prevented from falling off the rehabilitation pipe 1 by being firmly engaged with the return portion 61d of 61a.

つまり、この封止ユニット６を更生管１の端部に装着する場合には、先ず、インナ部材６１のドラム部６１ａを更生管１の内部に挿入し、バンド６３を更生管１の外面側から内周側に向けて締め付けることによってインナ部材６１を更生管１に取り付ける。その後、閉塞栓部材６２をインナ部材６１のフランジ部６１ｂに重ね合わせてそれぞれのボルト孔６１ｃ、６２ａに亘ってボルトを挿通し、このボルトにナットをねじ込むことによって閉塞栓部材６２をインナ部材６１に一体的に組み付ける。これによって、封止ユニット６が更生管１の端部に装着されることになる。尚、閉塞栓部材６２をインナ部材６１に組み付けた後に、インナ部材６１を更生管１の内部に挿入して取り付けるようにしてもよい。   That is, when the sealing unit 6 is attached to the end portion of the rehabilitation pipe 1, first, the drum portion 61 a of the inner member 61 is inserted into the rehabilitation pipe 1, and the band 63 is inserted from the outer surface side of the rehabilitation pipe 1. The inner member 61 is attached to the rehabilitation pipe 1 by tightening toward the inner peripheral side. Thereafter, the closing plug member 62 is overlapped with the flange portion 61b of the inner member 61, a bolt is inserted through each of the bolt holes 61c and 62a, and a nut is screwed into the bolt to thereby connect the closing plug member 62 to the inner member 61. Assemble as one. As a result, the sealing unit 6 is attached to the end portion of the rehabilitation pipe 1. Note that the inner member 61 may be inserted into the rehabilitation pipe 1 and attached after the closing plug member 62 is assembled to the inner member 61.

次に、更生後の更生管１と、マンホールＱ１内に臨む既設管７とを接続するための継手管８について説明する。図７は、この継手管８を示す斜視図である。この図に示すように、継手管８は、その軸線方向の中央部分が上記既設管７の内径寸法と略一致する内径寸法を有する直管部８１を備えている。そして、この直管部８１よりも既設管接続側は、テーパ部８２を介し、既設管７の外径寸法に略一致する内径寸法を有する既設管接続部８３を備えている。一方、直管部８１よりも更生管接続側は、上記インナ部材６１のフランジ部６１ｂの形状に略一致するフランジ８４が形成されており、このフランジ８４には、上記フランジ部６１ｂが重ね合わされた際に上記ボルト孔６１ｃ，６１ｃ，…の形成位置に一致する箇所に同様のボルト孔８４ａ，８４ａ，…が形成されている。   Next, the joint pipe 8 for connecting the rehabilitated pipe 1 after the rehabilitation and the existing pipe 7 facing the manhole Q1 will be described. FIG. 7 is a perspective view showing the joint pipe 8. As shown in this figure, the joint pipe 8 includes a straight pipe portion 81 having an inner diameter dimension substantially equal to the inner diameter dimension of the existing pipe 7 at the central portion in the axial direction. The existing pipe connection side of the straight pipe portion 81 is provided with an existing pipe connection portion 83 having an inner diameter dimension that substantially matches the outer diameter dimension of the existing pipe 7 via the taper portion 82. On the other hand, a flange 84 that substantially matches the shape of the flange portion 61b of the inner member 61 is formed on the rehabilitation pipe connection side with respect to the straight pipe portion 81, and the flange portion 61b is superimposed on the flange 84. At the same time, similar bolt holes 84a, 84a,... Are formed at locations corresponding to the formation positions of the bolt holes 61c, 61c,.

次に、マンホールＱ１内において更生管１と既設管７とを接続する作業について説明する。上記更生作業で説明したように、更生管１を既設管３の内部に引き込んでいく途中において、更生管１を切断し、この切断部分に封止ユニット６を取り付ける。この更生管１に封止ユニット６を取り付けた後の引き込み状態を図８に示す。尚、更生管１を既設管３内の所定位置まで引き込んだ後に、この更生管１の端部に封止ユニット６を取り付けるようにしてもよい。   Next, the operation | work which connects the renovated pipe 1 and the existing pipe 7 in the manhole Q1 is demonstrated. As explained in the rehabilitation work, the rehabilitation pipe 1 is cut in the middle of drawing the rehabilitation pipe 1 into the existing pipe 3, and the sealing unit 6 is attached to the cut portion. FIG. 8 shows the retracted state after the sealing unit 6 is attached to the rehabilitation pipe 1. In addition, after drawing the rehabilitation pipe 1 to a predetermined position in the existing pipe 3, the sealing unit 6 may be attached to the end of the rehabilitation pipe 1.

所定位置まで更生管１を引き込んだ後、上述した如く、上記蒸気発生・加圧器５５より、ホース５５ａ、封止ユニット６を経て更生管１内に蒸気を連続的に供給する。これにより、更生管１を円筒体に形状回復させる。その後、更生管１内に加熱圧縮空気を送って、更生管１を既設管３の内面に密着させる。この状態を図９に示している。   After the rehabilitation pipe 1 is drawn to a predetermined position, steam is continuously supplied from the steam generator / pressurizer 55 into the rehabilitation pipe 1 through the hose 55a and the sealing unit 6 as described above. Thereby, the shape of the rehabilitation pipe | tube 1 is recovered to a cylindrical body. Thereafter, heated compressed air is sent into the rehabilitation pipe 1 so that the rehabilitation pipe 1 is in close contact with the inner surface of the existing pipe 3. This state is shown in FIG.

以上の動作によって更生管１によるライニング動作が完了した後、図１０に示すように、インナ部材６１に閉塞栓部材６２を締結していたボルトＢを取り外して、閉塞栓部材６２をインナ部材６１から離脱させ、この閉塞栓部材６２のみを地上に引き上げる。この状態では、更生管１の端部に取り付けられているインナ部材６１の開口部と既設管７とがマンホールＱ１の内部空間を介して対向している。   After the lining operation by the rehabilitation pipe 1 is completed by the above operation, as shown in FIG. 10, the bolt B that has fastened the closing plug member 62 to the inner member 61 is removed, and the closing plug member 62 is removed from the inner member 61. Detach and lift only the plug member 62 to the ground. In this state, the opening of the inner member 61 attached to the end of the rehabilitation pipe 1 and the existing pipe 7 are opposed to each other through the internal space of the manhole Q1.

その後、継手管８の装着作業に移る。この作業では、先ず、継手管８の既設管接続部８３の内部に既設管７の先端部が入り込むように、継手管８と既設管７とを接合する。そして、図１１に示すように、継手管８のフランジ８４とインナ部材６１のフランジ部６１ｂとを重ね合わせ、且つ両部材８４，６１ｂの各ボルト孔８４ａ，６１ｃの位置を一致させる。そして、これら各ボルト孔８４ａ，６１ｃにボルトＢが挿通され、このボルトＢにナットＮをねじ込むことによって継手管８とインナ部材６１とを一体的に組み付ける。これにより、マンホールＱ１内において、継手管８を介して更生管１と既設管７とが管路同士を連通させた状態で接続されることになり、マンホールＱ１から水が溢れ出ない構成を構築することができる。   Thereafter, the mounting operation of the joint pipe 8 is started. In this operation, first, the joint pipe 8 and the existing pipe 7 are joined such that the tip of the existing pipe 7 enters the existing pipe connection portion 83 of the joint pipe 8. Then, as shown in FIG. 11, the flange 84 of the joint pipe 8 and the flange portion 61b of the inner member 61 are overlapped, and the positions of the bolt holes 84a and 61c of both the members 84 and 61b are matched. Then, the bolt B is inserted into each of the bolt holes 84a and 61c, and the nut N is screwed into the bolt B so that the joint pipe 8 and the inner member 61 are assembled together. As a result, in the manhole Q1, the rehabilitation pipe 1 and the existing pipe 7 are connected through the joint pipe 8 in a state where the pipes are in communication with each other, and a configuration in which water does not overflow from the manhole Q1 is constructed. can do.

以上のように本形態では、封止ユニット６にインナ部材６１及び閉塞栓部材６２を備えさせ、閉塞栓部材６２をインナ部材６１から取り外した後に、更生管１の管端に残ったインナ部材６１を利用して継手管８を連結するようにしている。従来では、更生管と継手との間をモルタルによって埋めていたため、モルタルが管路内に流れ込んでしまったり、モルタルが割れてしまうといった不具合があったが、本形態によれば、この不具合を解消することができ、接続作業が容易であり且つ信頼性の高い接続状態を得ることができる。   As described above, in this embodiment, the sealing unit 6 includes the inner member 61 and the blocking plug member 62, and after removing the blocking plug member 62 from the inner member 61, the inner member 61 remaining at the pipe end of the rehabilitation pipe 1. The joint pipe 8 is connected using the above. Conventionally, since the gap between the rehabilitated pipe and the joint was filled with mortar, there was a problem that the mortar flowed into the pipe line or the mortar was broken, but according to this form, this problem is solved. Therefore, the connection operation is easy and a reliable connection state can be obtained.

（第２実施形態）
次に、第２実施形態について説明する。本形態は、既設管７及び継手管８の形状が上述した第１実施形態のものと異なっている。その他の構成は上述した第１実施形態と同様であるので、ここでは既設管７及び継手管８の形状についてのみ説明する。 (Second Embodiment)
Next, a second embodiment will be described. In this embodiment, the shapes of the existing pipe 7 and the joint pipe 8 are different from those of the first embodiment described above. Since other configurations are the same as those of the first embodiment described above, only the shapes of the existing pipe 7 and the joint pipe 8 will be described here.

図１２は、本形態に係る更生管１と既設管７との接続状態を示している。この図に示すように、本形態に係る既設管７は、開口端縁部にフランジ７１が一体形成されている。これに対応するべく、継手管８の既設管接続側の端部には、上記既設管７のフランジ７１と同様のフランジ７２が形成されている。そして、これら既設管７及び継手管８の各フランジ７１，８４には、互いに位置合わせされたボルト孔が形成されており、これら各ボルト孔にボルトＢが挿通され、このボルトＢにナットＮをねじ込むことによって既設管７と継手管８とが一体的に組み付けられている。   FIG. 12 shows a connection state between the rehabilitation pipe 1 and the existing pipe 7 according to this embodiment. As shown in this figure, the existing pipe 7 according to this embodiment has a flange 71 integrally formed at the opening edge. To cope with this, a flange 72 similar to the flange 71 of the existing pipe 7 is formed at the end of the joint pipe 8 on the existing pipe connection side. The flanges 71 and 84 of the existing pipe 7 and the joint pipe 8 are formed with bolt holes that are aligned with each other. Bolts B are inserted into the bolt holes, and nuts N are inserted into the bolts B. The existing pipe 7 and the joint pipe 8 are integrally assembled by screwing.

尚、継手管８とインナ部材６１との接続形態は上述した第１実施形態のものと同一であるのでここでの説明は省略する。   In addition, since the connection form of the joint pipe 8 and the inner member 61 is the same as that of the first embodiment described above, description thereof is omitted here.

−その他の実施形態−
以上説明した各実施形態は、マンホールＱ１内で、更生管１と非更生状態の既設管７とを接続する際に本発明を適用した場合について説明した。本発明はこれに限らず、マンホール以外の箇所での配管同士を接続する場合や、更生管同士を接続する場合にも適用可能である。 -Other embodiments-
Each embodiment described above demonstrated the case where this invention was applied when connecting the rehabilitation pipe | tube 1 and the existing pipe | tube 7 of a non-rehabilitation state within the manhole Q1. The present invention is not limited to this, and can also be applied to the case of connecting pipes in places other than manholes or the case of connecting rehabilitated pipes.

更生作業前の更生管の一部を示す斜視図である。It is a perspective view which shows a part of rehabilitation pipe | tube before rehabilitation work. 更生管の製造工程を説明するための模式図である。It is a schematic diagram for demonstrating the manufacturing process of a rehabilitation pipe | tube. 更生管を既設管の内部に引き込む更生管敷設工程を説明するための模式図である。It is a schematic diagram for demonstrating the rehabilitation pipe | laying process of drawing a rehabilitation pipe | tube inside the existing pipe | tube. （ａ）は埋設管内に更生管を引き込んだ状態を示す断面図であり、（ｂ）は更生管を加熱して形状回復させた状態を示す断面図であり、（ｃ）は更生管を加圧膨張させて埋設本管の内面に密着させた状態を示す断面図である。(A) is a cross-sectional view showing a state in which the rehabilitation pipe is drawn into the buried pipe, (b) is a cross-sectional view showing a state in which the rehabilitation pipe is heated and its shape is restored, and (c) is a state in which the rehabilitation pipe is added. It is sectional drawing which shows the state expanded by pressure and closely_contact | adhered to the inner surface of the embedding main pipe. 更生管を既設管内にライニングするライニング工程を説明するための模式図である。It is a schematic diagram for demonstrating the lining process which lines a rehabilitation pipe | tube in an existing pipe | tube. 封止ユニットが更生管の端部に取り付けられる際の状態を示す分解斜視図である。It is a disassembled perspective view which shows the state at the time of a sealing unit being attached to the edge part of a renovated pipe. 第１実施形態に係る継手管を示す斜視図である。It is a perspective view showing a joint pipe concerning a 1st embodiment. 更生管に封止ユニットを取り付けた状態での引き込み状態を示すマンホール及びその周辺の断面図である。It is sectional drawing of the manhole which shows the drawing-in state in the state which attached the sealing unit to the rehabilitation pipe | tube, and its periphery. 更生管の拡径工程後の状態を示すマンホール及びその周辺の断面図である。It is sectional drawing of the manhole which shows the state after the diameter expansion process of a rehabilitation pipe | tube, and its periphery. 閉塞栓部材をインナ部材から離脱する際の状態を示すマンホール及びその周辺の断面図である。It is sectional drawing of the manhole which shows the state at the time of removing | separating an obstruction | occlusion stopper member from an inner member, and its periphery. 継手管によって更生管と既設管とが接続された状態を示すマンホール及びその周辺の断面図である。It is sectional drawing of the manhole and its periphery which show the state where the renovated pipe and the existing pipe were connected by the joint pipe. 第２実施形態おける図１１に相当する図である。It is a figure equivalent to FIG. 11 in 2nd Embodiment. 従来例において更生管に封止ユニットが装着された状態を示す斜視図である。It is a perspective view which shows the state by which the sealing unit was mounted | worn with the rehabilitation pipe | tube in the prior art example. 従来例における図１１に相当する図である。It is a figure equivalent to FIG. 11 in a prior art example.

１ 更生管
３，７ 既設管
６ 封止ユニット
６１ インナ部材（第１部材）
６１ａ ドラム部
６１ｂ フランジ部
６２ 閉塞栓部材（第２部材）
８ 継手管 1 Rehabilitation pipes 3 and 7 Existing pipe 6 Sealing unit 61 Inner member (first member)
61a Drum part 61b Flange part 62 Blocking plug member (second member)
8 Joint pipe

Claims (1)

更生管の管端に装着される略円環形状の第１部材と、この更生管の管端の開口を閉塞する第２部材とを備えた封止ユニットを更生管の管端に取り付け、更生管を既設管の内部に引き込んだ状態で更生管の内部に加圧流体を導入して更生管を拡径し、既設管の内面に更生管を密着させて既設管の更生を行う更生工程と、この更生工程の後、更生管の管端から第２部材のみを取り外し、更生管の管端と他の配管の管端との間に継手管を配置して、この継手管と第１部材とを連結する配管継ぎ工程とを備えている管路更生接続方法に使用される封止ユニットであって、
上記更生管の管端内部に嵌め込まれる略筒型形状のドラム部及び更生管の管端外側において外周側に広がるフランジ部を備えた第１部材と、円盤状であってこのフランジ部に重ね合わされることによって更生管の管端の開口を閉塞する第２部材とを備えていることを特徴とする封止ユニット。 A sealing unit including a first ring-shaped first member attached to the pipe end of the rehabilitation pipe and a second member closing the opening of the pipe end of the rehabilitation pipe is attached to the pipe end of the rehabilitation pipe. A rehabilitation process in which a pressurized fluid is introduced into the rehabilitation pipe while the pipe is pulled into the existing pipe to expand the diameter of the rehabilitation pipe, and the rehabilitation pipe is reattached to the inner surface of the existing pipe. After the rehabilitation step, only the second member is removed from the pipe end of the rehabilitation pipe, and a joint pipe is disposed between the pipe end of the rehabilitation pipe and the pipe end of the other pipe, and the joint pipe and the first member. A sealing unit used in a pipe rehabilitation connecting method comprising a pipe splicing process for connecting
A substantially cylindrical drum portion fitted inside the pipe end of the rehabilitated pipe and a first member provided with a flange part spreading outward on the outer side of the pipe end of the rehabilitated pipe, and a disc-like member that is superimposed on the flange part. And a second member that closes the opening of the tube end of the rehabilitated tube.
JP2004231225A 2004-08-06 2004-08-06 Sealing unit used for pipe rehabilitation connection method Expired - Fee Related JP4603312B2 (en)

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JP5745918B2 (en) * 2011-04-21 2015-07-08 タキロンエンジニアリング株式会社 Lid for pipe lining material and method for attaching / detaching the same
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KR101291614B1 (en) 2013-04-10 2013-08-01 임채균 Sealing device for sealing end portions of pipeline repaired with a lining layer
JP6445773B2 (en) * 2014-03-27 2018-12-26 積水化学工業株式会社 Pipe connection method
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JP6465757B2 (en) * 2015-06-12 2019-02-06 積水化学工業株式会社 Pipe connection structure and pipe connection method in a manhole
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JP2003181923A (en) * 2001-12-13 2003-07-03 Sekisui Chem Co Ltd Method for lining existing pipeline with inner tube and auxiliary appliance for applying inner tube

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