JPH0558385B2 - - Google Patents
Info
- Publication number
- JPH0558385B2 JPH0558385B2 JP62310397A JP31039787A JPH0558385B2 JP H0558385 B2 JPH0558385 B2 JP H0558385B2 JP 62310397 A JP62310397 A JP 62310397A JP 31039787 A JP31039787 A JP 31039787A JP H0558385 B2 JPH0558385 B2 JP H0558385B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- lining
- pipe
- hard
- pressurized fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- -1 polyethylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は管内面の硬質チユーブライニング工法
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hard tube lining method for the inner surface of a tube.
従来の技術及びその問題点
従来管内面のライニング工法として、管内に軟
質チユーブを加圧流体を利用して反転挿入しつつ
管内面に圧着し内張りするようなチユーブライニ
ング工法が提案され、老朽化した既設管の再生又
は補修を目的とする管内ライニングに普及しつつ
ある。このような従来の反転内張り工法は、チユ
ーブが軟質であるため、チユーブを管内面に接着
するための接着剤の適用が必要となり、接着剤を
予め管又はチユーブ側に塗布するなど、操作が複
雑となるばかりでなく、もし一部にでも接着不良
個所が生ずると、この不良個所が地下水などの浸
入により周囲に波及して行き、施工の信頼性に欠
ける難点があつた。Conventional technology and its problems As a conventional method for lining the inner surface of a pipe, a tube lining method has been proposed in which a soft tube is reversely inserted into the pipe using pressurized fluid and then crimped and lined on the inner surface of the pipe, but this method has become obsolete. It is becoming popular as pipe lining for the purpose of regenerating or repairing existing pipes. In this conventional inversion lining method, since the tube is soft, it is necessary to apply adhesive to bond the tube to the inner surface of the tube, and the operation is complicated, such as applying adhesive to the tube or tube side in advance. Not only that, but if there was a defect in the adhesion in even one part, this defective area would spread to the surrounding area due to the infiltration of underground water, etc., resulting in a lack of reliability in construction.
本発明はこのような従来の問題点を一層するこ
とを目的としてなされたものである。 The present invention has been made for the purpose of further alleviating these conventional problems.
問題点を解決するための手段
本発明は、管内にライニングチユーブを加圧流
体を利用して反転挿入しつつ管内面に圧着して行
くチユーブライニング工法において、ライニング
チユーブとして硬質プラスチツク製のライニング
チユーブを、内側からは、上記チユーブの全長に
亘つて予め挿入されている多孔管より供給される
加熱流体により、また外側からはチユーブ反転用
に用いられる加圧流体に与えられた熱により、そ
れぞれ加熱して軟化し、この加熱軟化状態を保持
しつつ上記チユーブを加圧流体の作用で常法通り
管内に反転挿入しつつ内張りして行くことを特徴
とする管内面の硬質チユーブライニング工法に係
る。Means for Solving the Problems The present invention uses a hard plastic lining tube as a lining tube in a tube lining method in which a lining tube is reversely inserted into a tube using pressurized fluid and crimped onto the inner surface of the tube. , from the inside by a heating fluid supplied from a perforated pipe inserted in advance over the entire length of the tube, and from the outside by heat given to a pressurized fluid used for inverting the tube. This relates to a hard tube lining method for the inner surface of a tube, which is characterized in that the tube is softened by heating, and while the tube is maintained in the softened state by heating, the tube is inverted and inserted into the tube in a conventional manner by the action of a pressurized fluid and lined.
実施例
以下に本発明の一実施例を添附図面にもとづき
説明すると次の通りである。Embodiment An embodiment of the present invention will be described below based on the accompanying drawings.
本発明工法の実施に際しては、内面ライニング
を施すべき管１の始端と終端に、上記管１と同径
の端末管２，３が適宜の接続手段を適用して脱着
自在に接続される。 When carrying out the construction method of the present invention, terminal pipes 2 and 3 having the same diameter as the pipe 1 are removably connected to the starting and ending ends of the pipe 1 to be internally lined using appropriate connecting means.
始端側の端末管２の始端管口には、内面ライニ
ング用の硬質チユーブ４のコイル４ａを回転自在
に内蔵する密閉ケーシング５が、チユーブ引出し
用のダクト５ｂの出口端に於て、接続されてい
る。終端側の端末管３の終端側は、管板３ａによ
り閉塞されている。 A sealed casing 5 rotatably containing a coil 4a of a hard tube 4 for inner lining is connected to the starting end port of the terminal pipe 2 on the starting end side at the outlet end of a duct 5b for drawing out the tube. There is. The terminal end side of the terminal tube 3 on the terminal end side is closed by a tube plate 3a.
上記硬質チユーブ４は、塩化ビニル樹脂、ポリ
エチレン、ポリプロピレンなどのような熱可塑性
硬質プラスチツクから断面円形に成形されたもの
を、半径方向に押し潰し扁平状となし、この扁平
状の状態で中空回転軸４ｂ上に巻取つたものであ
る。硬質チユーブ４は、円形断面を基準にして、
管１の内径（直径）の40〜99％、特に55〜70％程
度に相当する外径（直径）を有していることが好
ましい。上記チユーブ４の外径が管１の内径の90
％を越えると管内への反転挿入が困難となり、ま
た40％以下では、反転挿入後に行われる拡管時に
偏肉を生ずる虞れがああるので、好ましくない。
上記チユーブ４は、拡管後に於ても保形性を保持
できるような肉厚を有していることが必要であ
り、例えば管の口径が300mmφの場合に於て、１
〜10mm程度の範囲内から外径、拡管率及び材質な
どに応じ、適宜選択決定される。 The hard tube 4 is made of thermoplastic hard plastic such as vinyl chloride resin, polyethylene, polypropylene, etc. and is molded to have a circular cross section.It is crushed in the radial direction to form a flat shape, and in this flat state, a hollow rotating shaft is formed. 4b. The hard tube 4 has a circular cross section as a reference,
It is preferable that the outer diameter (diameter) corresponds to about 40 to 99%, particularly about 55 to 70%, of the inner diameter (diameter) of the tube 1. The outer diameter of tube 4 is 90% the inner diameter of tube 1.
If it exceeds 40%, it becomes difficult to reversely insert the tube into the pipe, and if it is less than 40%, there is a risk of uneven thickness during tube expansion after the reversely inserted, which is not preferable.
The tube 4 needs to have a wall thickness that can maintain its shape even after expansion. For example, when the tube diameter is 300 mmφ,
Appropriate selection is made within the range of ~10 mm depending on the outer diameter, tube expansion rate, material, etc.
上記チユーブ４内には、予めその全長に亘り加
熱流体、例えばスチーム供給用の可撓性多孔管６
が挿入されている。 Inside the tube 4, a flexible porous pipe 6 for supplying a heating fluid, such as steam, is preliminarily installed along its entire length.
is inserted.
多孔管６の基端側には、中空回転軸４ｂに形成
の通孔４b1、上記軸４ｂ内、同軸４ｂの軸端に備
付けのスイベル７及び該スイベル７に付設のスチ
ーム導管８を介して第１ボイラ９に接続されてい
る（第２図参照）。一方多孔管６の先端側にはロ
ープ１０が接続され、該ロープ１０は管１内を通
り、更に終端側の端末管３の管板３ａをフリーに
貫通し、管１外設置の気密ドラム１１（第３図参
照）に巻取られている。上記管板３ａと気密ドラ
ム１１間の気密性を保持するために、之等管板３
ａとドラム１１の引込みダクト１１ａ間に、第３
図に示されるように、上記ロープ１０ひいては多
孔管６の周囲を囲繞するようにシール用筒体１２
が設けられている。 On the proximal end side of the porous tube 6, there is a through hole 4b 1 formed in the hollow rotating shaft 4b, a swivel 7 provided inside the shaft 4b and the end of the coaxial 4b, and a steam conduit 8 attached to the swivel 7. It is connected to the first boiler 9 (see Fig. 2). On the other hand, a rope 10 is connected to the tip side of the porous pipe 6, and the rope 10 passes through the inside of the pipe 1, and further freely passes through the tube plate 3a of the terminal pipe 3 on the terminal end side. (See Figure 3). In order to maintain airtightness between the tube plate 3a and the airtight drum 11, the tube plate 3a is
a and the lead-in duct 11a of the drum 11, the third
As shown in the figure, a sealing cylinder 12 is attached so as to surround the rope 10 and the perforated pipe 6.
is provided.
上記気密ケーシング５には、チユーブ反転挿入
用の加圧流体例えば圧縮空気の供給口５ａが設け
られ、該供給口５ａは空気導入管１３を介してコ
ンプレツサ１４に接続されている。上記空気導入
管１３の途中は、スチーム導管１５を介して第２
ボイラ１６に接続されている。 The airtight casing 5 is provided with a supply port 5a for pressurized fluid, such as compressed air, for reverse insertion of the tube, and the supply port 5a is connected to a compressor 14 via an air introduction pipe 13. The middle of the air introduction pipe 13 is connected to a second pipe via a steam pipe 15.
It is connected to the boiler 16.
施工に際しては、硬質チユーブ４を気密ケーシ
ング５のダクト５ｂより引出し、その先端部を管
１の始端管口に固定した状態で、第１ボイラ９よ
りスチームを導管８、スイベル７、中空回転軸４
ｂ及びその通孔４b1を順次経て多孔管６内に供給
すると、スチームは第４図に矢符で示されるよう
に多孔管６より硬質チユーブ内に噴出し、該チユ
ーブ４を内面側から加熱する。更に第２ボイラ１
６からスチームを導管１５，１３を通じて気密ケ
ーシング５内に供給すると、スチームは硬質チユ
ーブ４を外面側から加熱する。 During construction, the hard tube 4 is pulled out from the duct 5b of the airtight casing 5, and with its tip fixed to the starting end of the tube 1, steam is supplied from the first boiler 9 to the conduit 8, the swivel 7, and the hollow rotating shaft 4.
When steam is supplied into the perforated tube 6 through the perforated tube 4b and its through hole 4b1 sequentially, the steam is ejected from the perforated tube 6 into the hard tube as shown by the arrow in FIG. 4, heating the tube 4 from the inner surface. do. Furthermore, the second boiler 1
When steam is supplied from 6 into the airtight casing 5 through conduits 15 and 13, the steam heats the hard tube 4 from the outside surface side.
硬質チユーブ４は塩化ビニル樹脂、ポリエチレ
ン、ポリプロピレンなどのような熱可塑性樹脂製
であり、80℃程度の軟化点を有しているので、ス
チームにより内外よりの加熱で軟化し、軟質チユ
ーブ様の状態となる。而してこのような軟化状態
を保持しつつコンプレツサ１４より導管１３を通
じて気密ケーシング５内に圧縮空気を供給し、該
ケーシング５内を加圧状態、例えば0.2〜５Kg／
cm2（ゲージ圧）程度に維持すると、軟化状態にな
る硬質チユーブ４は軟質チユーブの場合と同様
に、流体圧を受けて管１の始端からその内部に反
転挿入されて行くと共に拡管されて管１内面に圧
着内張りされて行き、内面ライニング４′を形成
して行く。 The hard tube 4 is made of thermoplastic resin such as vinyl chloride resin, polyethylene, polypropylene, etc., and has a softening point of about 80°C, so it softens when heated from the inside and outside by steam, and becomes a soft tube-like state. becomes. While maintaining this softened state, compressed air is supplied from the compressor 14 through the conduit 13 into the airtight casing 5, and the inside of the casing 5 is pressurized, for example, 0.2 to 5 kg/
When maintained at about cm 2 (gauge pressure), the hard tube 4, which becomes soft, becomes inverted and inserted into the tube 1 from the starting end under the fluid pressure, as in the case of a soft tube, and is expanded and expanded. 1, the inner surface is crimply lined to form an inner lining 4'.
ロープ１０及びこれに後続する多孔管６は、内
面ライニングの進行につれ、管外設置の気密ドラ
ム１１の巻取り軸１１ａに巻取られて行く。 As the inner lining progresses, the rope 10 and the porous tube 6 following it are wound around the winding shaft 11a of the airtight drum 11 installed outside the tube.
第２図に示されるように、多孔管６は硬質チユ
ーブ４の反転内張りが進行するにつれ、該チユー
ブ４内より引出されて行き、反転内張りが管１の
全長の略々1/2に至つた後は、始端側の端末管３
の管板３ａより外部に引出されて行く。管１外に
於ける多孔管６よりのスチームの噴出は危険であ
り、またスチームの消費ロスともなるので、第３
図に示されるように、管板３ａと気密ドラム１１
間にシール用筒体１２を設け、該筒体１２内を通
過させるようにすることが好ましい。 As shown in FIG. 2, as the inverted lining of the hard tube 4 progresses, the porous tube 6 is pulled out from inside the tube 4 until the inverted lining reaches approximately 1/2 of the total length of the tube 1. After that, the terminal pipe 3 on the starting end side
is pulled out from the tube plate 3a. The ejection of steam from the perforated pipe 6 outside the pipe 1 is dangerous and also results in a loss of steam consumption.
As shown in the figure, the tube sheet 3a and the airtight drum 11
It is preferable to provide a sealing cylinder 12 between them and allow the seal to pass through the cylinder 12.
管１内への硬質チユーブ４の反転挿入による内
張りを終えた後は、スチームの供給を停止し、冷
却固化を計ることにより、硬質チユーブ４からな
る内面ライニング４′が得られる。この内面ライ
ニング４′は硬質であるので、接着剤の適用なし
に内面ライニング状態を保持する。管１の内面に
凹凸があるような場合は、管１を内面ライニング
４′との間に凹凸にもとづく隙間を生ずる虞れが
あるので、このような隙間をなくするために、チ
ユーブ４の内面に、予め隙間充填用の、例えば粘
着剤、接着剤等よりなる充填層（図示せず）を形
成しておくことができる。 After lining the tube 1 by inverting and inserting the hard tube 4 into the tube 1, the supply of steam is stopped and the inner lining 4' made of the hard tube 4 is obtained by cooling and solidifying. Since this inner lining 4' is hard, it retains its inner lining condition without the application of adhesive. If the inner surface of the tube 1 is uneven, there is a risk of creating a gap between the tube 1 and the inner lining 4' due to the unevenness. A filling layer (not shown) made of, for example, a pressure-sensitive adhesive or an adhesive can be formed in advance to fill the gap.
効 果
本発明工法に於ては、内張り用のチユーブとし
て硬質のものを用いているので、接着剤を省略で
き、操作の簡潔化と併せてチユーブライニングに
よる施工の信頼性を向上できる特徴を有する。Effects In the construction method of the present invention, since a hard material is used as the tube for lining, the adhesive can be omitted, which has the feature of simplifying the operation and improving the reliability of construction by tube lining. .
第１図は本発明工法の開始時の状況を概略的に
示す説明図、第２図は同終了時の状況を概略的に
示す説明図、第３図は管外設置の気密ドラムの作
動状況を示す説明図、第４図は第１図のＩ〜Ｉ線
に沿う断面図である。
図に於て、１は管、２，３は端末管、４は硬質
チユーブ、５は気密ケーシング、６は多孔管であ
る。
Figure 1 is an explanatory diagram schematically showing the situation at the start of the method of the present invention, Figure 2 is an explanatory diagram schematically showing the situation at the end of the method, and Figure 3 is the operating status of the airtight drum installed outside the pipe. FIG. 4 is a sectional view taken along line I-I in FIG. 1. In the figure, 1 is a tube, 2 and 3 are terminal tubes, 4 is a hard tube, 5 is an airtight casing, and 6 is a perforated tube.
Claims (1)
して反転挿入しつつ管内面に圧着して行くチユー
ブライニング工法において、ライニングチユーブ
として硬質プラスチツク製のライニングチユーブ
を、内側からは、上記チユーブの全長に亘つて予
め挿入されている多孔管より供給される加熱流体
により、また外側からはチユーブ反転用に用いら
れる加圧流体に与えられた熱により、それぞれ加
熱して軟化し、この加熱軟化状態を保持しつつ上
記チユーブを加圧流体の作用で常法通り管内に反
転挿入しつつ内張りして行くことを特徴とする管
内面の硬質チユーブライニング工法。1 In the tube lining method, in which a lining tube is reversely inserted into a pipe using pressurized fluid and crimped onto the inner surface of the pipe, a hard plastic lining tube is inserted from the inside over the entire length of the tube. The tube is heated and softened by the heating fluid supplied from the perforated tube inserted in advance, and by the heat applied from the outside to the pressurized fluid used for reversing the tube, and this heated and softened state is maintained. A hard tube lining method for the inner surface of a tube, characterized in that the tube is reversely inserted into the tube and lined by the action of pressurized fluid in a conventional manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62310397A JPH01150522A (en) | 1987-12-07 | 1987-12-07 | Rigid tube lining of inner surface of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62310397A JPH01150522A (en) | 1987-12-07 | 1987-12-07 | Rigid tube lining of inner surface of pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01150522A JPH01150522A (en) | 1989-06-13 |
| JPH0558385B2 true JPH0558385B2 (en) | 1993-08-26 |
Family
ID=18004769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62310397A Granted JPH01150522A (en) | 1987-12-07 | 1987-12-07 | Rigid tube lining of inner surface of pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01150522A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0392330A (en) * | 1989-09-06 | 1991-04-17 | Japan Steel & Tube Constr Co Ltd | Lining material for reversal lining and preparation thereof |
-
1987
- 1987-12-07 JP JP62310397A patent/JPH01150522A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01150522A (en) | 1989-06-13 |
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