JPH0667595B2 - Pipe line lining method - Google Patents
Pipe line lining methodInfo
- Publication number
- JPH0667595B2 JPH0667595B2 JP63085379A JP8537988A JPH0667595B2 JP H0667595 B2 JPH0667595 B2 JP H0667595B2 JP 63085379 A JP63085379 A JP 63085379A JP 8537988 A JP8537988 A JP 8537988A JP H0667595 B2 JPH0667595 B2 JP H0667595B2
- Authority
- JP
- Japan
- Prior art keywords
- existing pipe
- long hose
- film tube
- tube
- hose
- 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
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Pipe Accessories (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は上・下水道、石油、その他、あらゆる既設管
状物の内部に合成樹脂管を内張りする管路の内張り方
法、特に三次元形状の既設管状物にも適用できるように
したものに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a method of lining pipes for lining synthetic resin pipes inside existing pipes, such as water / sewerage systems, petroleum, etc. The present invention relates to a tube-shaped object.
［従来の技術］ 第10図は例えば特公昭59−12911号広報に示された従来
の管路の内張り方法の実施状態を示す縦断面図、第11図
（ａ），（ｂ），（ｃ），（ｄ），（ｅ），（ｆ）は従
来方法において内張り材の折り返し部分が管路の屈曲部
分を通過する状態をそれぞれ示す説明図である。[Prior Art] FIG. 10 is a longitudinal sectional view showing an implementation state of a conventional pipe line lining method shown in, for example, Japanese Patent Publication No. 59-12911, and FIGS. 11 (a), (b), and (c). ), (D), (e), and (f) are explanatory views showing states in which the folded-back portion of the lining material passes through the bent portion of the conduit in the conventional method.
従来の管路の内張り方法は、まず内部に全長に亘って紐
状長尺物11が挿通され、扁平に折畳んだ内張り材１をそ
の先端から駆動装置９を通し、さらにスリット２を通し
て圧力容器３内へ挿入する。次いで、この内張り材１内
に接着剤７を注入し、再度先端を扁平に折畳んでスリッ
ト８を通し、口金４及び誘導管４′を通して誘導管４′
の先端へ導出する。次に、この内張り材１の先端から突
出する紐状長尺物11の先端を予め管路６に挿通されてい
る紐状長尺物12の端末に接続する。次いで、誘導管４′
の先端に内張り材１の先端を環状に固定する。然る後に
圧力容器３に設けられた圧力流体導入口17,18から流体
圧力を導入する。この状態で引き取り装置15を駆動さ
せ、次いで駆動装置９を作動させる。このようにして引
き取り装置15を作動させれば、紐状長尺物12を介して紐
状長尺物11は図中左方へ引かれ、流体圧力によりこの紐
状長尺物11に圧接せしめられた扁平状態の内張り材１も
紐状長尺物11に伴って左方へ移動する。これにより、内
張り材１は環状固定部分で反転され、ここに形成される
折り返し部分において順次反転されながら、この反転部
分は管路６内を移動する。而して反転された内張り材１
は、前記流体圧力によって管路内面に圧着され、接着剤
７を介して接着される。The conventional pipe line lining method is as follows. First, a string-like elongated object 11 is inserted through the entire length, and a flatly folded lining material 1 is passed through a drive device 9 from its tip, and further through a slit 2 to a pressure vessel. Insert into 3. Then, the adhesive 7 is injected into the lining material 1, the tip is folded again flatly, passed through the slit 8, and passed through the base 4 and the guide tube 4 ', and the guide tube 4'.
Out to the tip of. Next, the tip of the string-like elongated object 11 protruding from the tip of the lining material 1 is connected to the end of the string-like elongated object 12 which is previously inserted into the conduit 6. Then, the guide tube 4 '
The tip of the lining material 1 is annularly fixed to the tip of the. After that, the fluid pressure is introduced from the pressure fluid introduction ports 17 and 18 provided in the pressure vessel 3. In this state, the take-up device 15 is driven, and then the drive device 9 is operated. When the take-up device 15 is operated in this way, the string-shaped long object 11 is pulled to the left in the figure through the string-shaped long object 12, and is pressed against the string-shaped long object 11 by fluid pressure. The flat lining material 1 in the flat state also moves to the left along with the string-like elongated object 11. As a result, the lining material 1 is inverted at the annular fixed portion, and the inverted portion moves in the pipe line 6 while being sequentially inverted at the folded portion formed here. Then the lining material 1 which was reversed
Is pressure-bonded to the inner surface of the pipe by the fluid pressure and adhered via the adhesive 7.
次に、内張り材１の折り返し部分５が管路６の屈曲部分
6aを通過する状態を第11図に基き説明する。折り返し部
分５は管路６の直管部分6bを図中右方から進行し、屈曲
部分6aに至る（第11図ａ）。このとき、紐状長尺物11は
図面において折り返し部分５の左上方から引くことにな
るため、折り返し部分５の上部はやゝ押圧され、下部の
方がやゝ大きく膨らむ。従って反転がさらに進行する
時、折り返し部分５の下部が上部より幾分先行する形で
進行することとなり（第11図b,c）、反転不能となるこ
とはない。又、反転の進行に伴い、前記線19の方向は徐
々に変化し、常に管路６の長さ方法にほゞ直交する方向
に伸びる。Next, the folded-back portion 5 of the lining material 1 is the bent portion of the conduit 6.
The state of passing 6a will be described with reference to FIG. The folded-back portion 5 advances along the straight pipe portion 6b of the pipe line 6 from the right side in the figure to the bent portion 6a (Fig. 11a). At this time, since the string-like elongated object 11 is pulled from the upper left side of the folded-back portion 5 in the drawing, the upper portion of the folded-back portion 5 is slightly pressed, and the lower portion thereof expands slightly. Therefore, when the reversal progresses further, the lower part of the folded-back portion 5 advances somewhat ahead of the upper part (FIGS. 11B and 11C), and the reversal is not impossible. Further, as the reversal progresses, the direction of the line 19 gradually changes, and always extends in a direction substantially orthogonal to the length method of the conduit 6.
従って、反転が進行しても内張り材１は管路６の内面に
圧着した状態のまゝで進行し、空隙を生ずることはな
い。（第11図d,e）。Therefore, even if the reversal progresses, the lining material 1 proceeds in a state of being pressure-bonded to the inner surface of the pipe line 6, and no void is generated. (Fig. 11 d, e).
このように従来の方法によれば、管路６の屈曲部分6aに
おいて、内張り材１の方向が紐状長尺物11の誘導によっ
てゆるやかに変更されるため、内張り材１に局部的な歪
を生ずることがなく、又はげしいしわや空隙を生ずるこ
とがないので流体の流通を阻害するおそれがなく、又折
り返し部分５が屈曲部6aを通過する際にもトラブルを生
じることがなく、スムーズに通過し得るのである。As described above, according to the conventional method, in the bent portion 6a of the conduit 6, the direction of the lining material 1 is gently changed by the guidance of the string-shaped elongated object 11, so that the lining material 1 is locally strained. It does not occur, or it does not cause severe wrinkles or voids, so there is no risk of obstructing the flow of fluid, and there is no trouble when the folded-back part 5 passes through the bent part 6a, and it passes smoothly. You can do it.
［発明が解決しようとする課題］ 上記のような従来の管路の内張り方法では、内周面に予
め接着剤７が塗布されている内張り材１を圧力流体を利
用して屈曲部分6aを有する管路６内に反転挿入し、管路
６の内壁面に内張り材１を接着剤７で接着させるから、
管路６の内壁面を予め高級な下地処理、例えば管路６の
内壁面にエポキシ樹脂で接着させる場合Sa2 1／２程度
の下地処理をしておくことが必要となり、特別な装置や
時間がかかり、高価となりやすく、特に管路６が複雑な
三次元形状や長距離となると、スクレーパなどの研掃工
具による防錆では屈曲部、管継手段差部なども含め、不
十分となり易くドライサンドブラストなどの本格的な機
械研掃が必要となってコストが嵩むという問題点があっ
た。また、一部でも下地処理の不良部分や内壁面に残存
油膜などがあれば施工後に生じた管継手部のズレ、クラ
ックの間隙、欠損部分から浸透してきた地下水そのほか
の外圧が原因となって部分座屈を引き起こすという問題
点もあった。[Problems to be Solved by the Invention] In the conventional pipe liner lining method as described above, the lining material 1 having the adhesive 7 applied in advance to the inner peripheral surface thereof has the bent portion 6a by using pressure fluid. Since the lining material 1 is adhered to the inner wall surface of the pipe line 6 with the adhesive 7 by inserting the pipe line 6 upside down
It is necessary to pretreat the inner wall surface of the pipeline 6 with a high-grade pretreatment, for example, when bonding the inner wall surface of the pipeline 6 with an epoxy resin, a pretreatment of about Sa2 1/2 is required. It tends to be expensive and expensive, and especially when the pipe line 6 has a complicated three-dimensional shape or a long distance, rust prevention by a scraping tool such as a scraper tends to be insufficient, including bent parts and pipe joint step parts, dry sand blasting etc. However, there was a problem that the cost increased due to the need for full-scale mechanical blasting. In addition, even if there is a defective surface treatment or a residual oil film on the inner wall surface, it may be caused by displacement of the pipe joint after construction, gaps in cracks, groundwater permeated from the missing portion, or other external pressure. There was also the problem of causing buckling.
この発明はかかる問題点を解決するためになされたもの
で、三次元形状の既設管の内壁面に高級な下地処理を必
要とせず、熱硬化性樹脂の加熱硬化中、低粘稠となっ
て、既設管のズレやハズレにより生ずる、管継手部の隙
間，管体欠損部の隙間，クラックの隙間と内部劣化部
（部分的に薄い管厚）などから熱硬化性樹脂がしみだ
し、地下水によって流失し、該周囲の樹脂含浸率の低下
による反転・硬化した長尺ホースの機械的強度の低下や
地下水による硬化不良も阻止できる管路の内張り方法を
提供することを目的としている。The present invention has been made to solve the above problems, and does not require a high-grade base treatment on the inner wall surface of an existing three-dimensional shape pipe, and has low viscosity during heat curing of the thermosetting resin. , Thermosetting resin exudes from gaps in pipe joints, gaps in pipe body defects, gaps in cracks and internal deteriorated parts (partially thin pipe thickness) caused by displacement or loss of existing pipes It is an object of the present invention to provide a method for lining a pipeline that can prevent the mechanical strength of a long hose that has been washed away and has been reversed and hardened due to a decrease in the resin impregnation rate around the hose, and the failure to harden due to groundwater.
［課題を解決するための手段］ この発明に係る管路の内張り方法は既設管より長い薄膜
チューブを既設管内にその全長にわたって引き込み、そ
の薄膜チューブの圧力容器側先端を既設管外で固定する
か自由端とし、しかる後に内側に熱硬化性樹脂層を有す
る長尺ホースを圧力容器内を通過させて圧力容器の前部
に設けられた先端筒から引き出し、長尺ホースの先端を
折り返して先端筒の外周に環状に固定し、その後圧力容
器内に圧力流体を導入して長尺ホースの環状固定部分を
前進せしめて既設管中に長尺ホースの反転挿入を行い、
長尺ホースの反転が既設管の屈曲部にさしかかった時に
薄膜チューブの非挿入側端部を牽引又は断続牽引し、薄
膜チューブを緊張させた状態で長尺ホースの反転挿入を
行い、長尺ホースの圧力流体による既設管内面への押圧
力により、薄膜チューブを既設管内周面に長尺ホースと
一緒に内張りし、その後長尺ホースの熱硬化性樹脂層を
加熱して硬化させるようにしたものである。[Means for Solving the Problems] In the pipe line lining method according to the present invention, is a thin-film tube longer than an existing pipe drawn into the existing pipe over its entire length, and the tip of the thin-film tube on the pressure vessel side is fixed outside the existing pipe? Make a free end, and then pass a long hose with a thermosetting resin layer on the inside through the pressure vessel, pull it out from the tip tube provided at the front of the pressure vessel, and fold back the tip of the long hose to make the tip tube. It is fixed to the outer periphery of the long hose, and then the pressure fluid is introduced into the pressure vessel to advance the annular fixed part of the long hose to reverse the insertion of the long hose into the existing pipe,
When the reversal of the long hose reaches the bent part of the existing pipe, pull the non-insertion side end of the thin film tube or intermittently pull it, and reverse the insertion of the long hose with the thin film tube tensioned, The thin film tube is lined with the long hose on the inner peripheral surface of the existing pipe by the pressing force of the pressure fluid on the inner surface of the existing pipe, and then the thermosetting resin layer of the long hose is heated and cured. Is.
［作用］ この発明においては、既設管より長い薄膜チューブを長
尺ホースの既設管への反転・挿入前に予め既設管内にそ
の全長にわたって引き込んでおき、その薄膜チューブの
圧力容器側先端を既設管外で固定するか、自由端とし、
しかる後に圧力流体によって既設管中に内側に熱硬化性
樹脂層を有する長尺ホースの反転・挿入を行うが、長尺
ホースの反転が既設管の屈曲部にさしかかった時に薄膜
チューブの非挿入側の端部を牽引又は断続牽引し、薄膜
チューブを緊張させた状態で長尺ホースの反転挿入を行
うから、薄膜チューブ内を反転・進行してきた既設管の
屈曲部外周側の長尺ホース部分には薄膜チューブの緊張
薄膜チューブ部分の張力がそのまま伝達されて緊張方向
に作用すると共に既設管の反対側の屈曲部内周側の長尺
ホース部分には薄膜チューブの弛緩薄膜チューブ部分が
接触しているから、既設管の屈曲部の内側内周壁に押圧
させるので、長尺ホースは容易に既設管の屈曲部を通過
する。長尺ホースが屈曲部を有する既設管内に反転・挿
入されたら、長尺ホースの熱硬化性樹脂層を加熱して硬
化させると、既設管と硬化した長尺ホースとの間に薄膜
チューブが全体に介在させられるから、加熱硬化中の熱
硬化性樹脂が低粘稠となって、既設管継手部のズレやク
ラックの隙間，管体欠損部などからしみだし、地下水に
よって流失し、該周囲の樹脂含浸率の低下による反転・
硬化した長尺ホースの機械的強度の低下や地下水による
硬化不良も阻止できる。[Operation] In the present invention, the thin-film tube longer than the existing pipe is previously drawn into the existing pipe over its entire length before the long hose is inverted or inserted into the existing pipe, and the tip of the thin-film tube on the pressure vessel side is the existing pipe. Either fix it outside or leave it as a free end,
Then, using pressure fluid, the long hose with a thermosetting resin layer inside it is turned over and inserted into the existing pipe, but when the long hose turns over to the bend of the existing pipe, the non-insertion side of the thin film tube Since the long hose is reversed and inserted while pulling or intermittently pulling the end of the thin film tube, the long hose part on the outer peripheral side of the bent part of the existing pipe that has been inverted and advanced in the thin film tube Is the tension of the thin-film tube and the tension of the thin-film tube is transmitted as it is, acting in the tension direction, and the loose thin-film tube part of the thin-film tube is in contact with the long hose part on the inner peripheral side of the bent part on the opposite side of the existing pipe. Therefore, since the inner hose of the bent portion of the existing pipe is pressed, the long hose easily passes through the bent portion of the existing pipe. When the long hose is turned over and inserted into the existing pipe that has a bent portion, the thermosetting resin layer of the long hose is heated and cured, and the thin-film tube is entirely placed between the existing pipe and the cured long hose. Since the thermosetting resin during heating and hardening becomes low-viscosity, it exudes from the gaps of cracks and cracks in existing pipe joints, pipe body defects, etc., and is washed away by groundwater, and Inversion due to a decrease in resin impregnation rate
It is possible to prevent deterioration of the mechanical strength of the hardened long hose and poor curing due to groundwater.
また、反転・挿入して硬化した長尺ホースは既設管の内
壁面に薄膜チューブを介して位置し、接着することは期
待されていないから、既設管に高級な下地処理は必要と
しない。Further, since the long hose that is inverted and inserted and cured is located on the inner wall surface of the existing pipe via the thin film tube and is not expected to be bonded, the existing pipe does not require a high-grade base treatment.
［実施例］ 第１図はこの発明方法の一実施例で、長尺ホースの反転
・挿入過程を示す断面図、第２図は既設管内における薄
膜チューブの状態を示す断面図、第３図は圧力容器によ
る既設管内における長尺ホースの反転・挿入過程を示す
断面図、第４図は既設管における薄膜チューブと反転状
態の長尺ホースを示す断面図、第５図は反転した長尺ホ
ースが既設管の屈曲部分を通過する直前の状態を示す断
面図、第６図は反転した長尺ホースが既設管の屈曲部分
を通過する状態を示す断面図、第７図はこの発明方法が
実施された既設管の管継手部分を示す断面図、第８図は
同既設管の管体欠損部分を示す断面図、第９図は同既設
管のクラック部分及び内部劣化部分を示す断面図であ
る。[Embodiment] FIG. 1 is an embodiment of the method of the present invention, a sectional view showing the process of reversing and inserting a long hose, FIG. 2 is a sectional view showing a state of a thin film tube in an existing pipe, and FIG. Sectional view showing the process of reversing and inserting the long hose in the existing pipe by the pressure vessel, Fig. 4 is a cross-sectional view showing the thin film tube in the existing pipe and the long hose in the inverted state, and Fig. 5 is the reversing long hose. FIG. 6 is a sectional view showing a state immediately before passing through a bent portion of an existing pipe, FIG. 6 is a sectional view showing a state where an inverted long hose passes through a bent portion of an existing pipe, and FIG. FIG. 8 is a sectional view showing a pipe joint portion of the existing pipe, FIG. 8 is a sectional view showing a tubular body defective portion of the existing pipe, and FIG. 9 is a sectional view showing a crack portion and an internally deteriorated portion of the existing pipe.
図において、20はラミネート状のしなやかな長尺ホース
で、内側にエポキシ樹脂系、ポリエステル樹脂系、フェ
ノール樹脂系等の熱硬化性樹脂を含浸させた不織布から
なり、外側はポリエチレン、ポリウレタン、酢酸ビニル
等の合成樹脂フィルム層からなる。21は抗張力のある薄
膜チューブで、例えば厚みが1mm以下、引張強度が100kg
／5cm幅（縦方向）の両面溶着可能なポリウレタンの合
成樹脂フィルムで形成されている。この薄膜チューブ21
は上記合成樹脂フィルム以外としては補強材入りゴムシ
ート、或いはナイロン繊維などの補強材入り合成樹脂フ
ィルムであってもよい。In the figure, 20 is a laminated flexible flexible hose, which is made of a nonwoven fabric impregnated with a thermosetting resin such as epoxy resin, polyester resin, or phenol resin on the inside, and polyethylene, polyurethane, or vinyl acetate on the outside. And a synthetic resin film layer. 21 is a tensile strength thin film tube, for example, a thickness of 1 mm or less, a tensile strength of 100 kg
It is made of polyurethane synthetic resin film that can be welded on both sides with a width of / 5 cm (vertical direction). This thin film tube 21
Other than the above synthetic resin film, a rubber sheet containing a reinforcing material or a synthetic resin film containing a reinforcing material such as nylon fiber may be used.
次に、この発明方法による既設管への内張り工程を説明
する。Next, the step of lining the existing pipe according to the method of the present invention will be described.
まず、折り畳んである薄膜チューブ21を長尺ホース20の
反転・挿入に先立ち、既設管６内に自走車などを使用し
て引き込んでおく。次に、扁平に折畳まれている長尺ホ
ース20を圧力容器22の後部に設けられているスリット23
内に挿入し、内部の止水板24を通過させて圧力容器22の
先端筒22aまで送り出す。そこで、先端筒22aより長尺ホ
ース20の先端を引張り出して折り返し、先端筒22aの外
周面に鋼製バンド25で環状に固縛する。このとき、既設
管５内に引き込まれている薄膜チューブ21の圧力容器22
側の端部を先端筒22aの外周面に長尺ホース20と一緒に
鋼製バンド25で環状に固縛するか、第３図のように自由
端とする。また、薄膜チューブ21の非挿入側の端部を既
設管６外でローラ28を介してベルトコンベアなどで製作
したテンショナ29に噛み合わせて牽引させておく。First, the folded thin film tube 21 is pulled into the existing pipe 6 by using a self-propelled vehicle or the like before the long hose 20 is turned over and inserted. Next, the long hose 20 folded flat is provided with a slit 23 provided at the rear of the pressure vessel 22.
It is inserted into the inside, and the water stop plate 24 in the inside is passed through, and it is sent out to the tip cylinder 22a of the pressure vessel 22. Therefore, the tip of the long hose 20 is pulled out from the tip tube 22a and folded back, and is fixed to the outer peripheral surface of the tip tube 22a in an annular shape by a steel band 25. At this time, the pressure vessel 22 of the thin film tube 21 drawn into the existing pipe 5
The end portion on the side is fixed to the outer peripheral surface of the distal end cylinder 22a together with the long hose 20 in an annular shape with a steel band 25, or is made a free end as shown in FIG. Further, the end portion of the thin film tube 21 on the non-insertion side is engaged with the tensioner 29 manufactured by a belt conveyor or the like outside the existing tube 6 via the roller 28 and pulled.
次に、かかる準備工程が終れば、圧力容器22の水供給口
26よりポンプで圧力を加えた約1kg／cm2以下の加圧水27
を圧力容器22内に注入すると同時に長尺ホース20を手で
圧力容器22内へと送り込んでいく。そうすると、加圧水
27の圧力と重量が長尺ホース20の環状固定部分を加圧す
ることにより、長尺ホース20の反転面20a,20bが大気圧
との圧力差によって圧力容器22の先端筒22aと同軸上に
臨設している既設管６内に連続的に反転・挿入されてい
く。このとき、第４図に示すように予め既設管６内に折
り畳まれた状態で引き込まれていた薄膜チューブ21は長
尺ホース20の反転圧力によって押し広げられながら、既
設管６の内周面に押圧され、環状の薄膜チューブ21とな
って既設管６の内周面と反転された長尺ホース20との間
に固定される。このように長尺ホース20が既設管６内を
反転・挿入されていく途中、長尺ホース20が既設管６の
エルボなどの屈曲部6aに差しかかると、屈曲部6aの外周
面内が壁となって進行しにくくなるが、このとき、テン
ショナ29により、薄膜チューブ21の端部を牽引又は断続
牽引すると薄膜チューブ21は緊張させられているから、
薄膜チューブ21内を進行してきた既設管６の屈曲部外周
側6a′の長尺ホース部分20aには薄膜チューブ21の緊張
薄膜チューブ部分21aの張力がそのまま伝達されて緊張
方向に作用すると共に既設管６の反対側の屈曲部内周側
6b′の長尺ホース部分20bには薄膜チューブ21の弛緩薄
膜チューブ部分21bが接触しているから、既設管６の屈
曲部6aの内側内周壁に押圧されて、長尺ホース20は容易
に既設管６の屈曲部6aを通過する。勿論この過程中、加
圧水は緊張した薄膜チューブ21の張力に打ち勝って、長
尺ホース20が既設管６の内壁面まで膨張するような十分
な圧力でなければならない。また、薄膜チューブ21は長
尺ホース20が既設管６の屈曲部6aに差しかかったとき
に、瞬間的に緊張させられ、通過直後に弛緩状態にして
も良い。以上のような手段を屈曲部6aに差しかかる毎に
繰り返すか、反転・挿入の全時間にわたって緊張状態を
保っておくかのいずれかにより、既設管６に複数の屈曲
部6aがあっても長尺ホース20の反転・挿入が容易に可能
となる。Next, when this preparation step is completed, the water supply port of the pressure vessel 22
Pressurized water with a pressure of about 1 kg / cm 2 or less from 26 27
Is injected into the pressure container 22, and at the same time, the long hose 20 is manually fed into the pressure container 22. Then, pressurized water
The pressure and weight of 27 press the annular fixed portion of the long hose 20, so that the reversal surfaces 20a and 20b of the long hose 20 are provided coaxially with the tip cylinder 22a of the pressure container 22 due to the pressure difference from the atmospheric pressure. The pipe 6 is continuously inverted and inserted into the existing pipe 6. At this time, as shown in FIG. 4, the thin film tube 21, which was previously drawn into the existing pipe 6 in a folded state, is spread on the inner peripheral surface of the existing pipe 6 while being pushed and spread by the reverse pressure of the long hose 20. It is pressed and becomes an annular thin film tube 21 and is fixed between the inner peripheral surface of the existing pipe 6 and the inverted long hose 20. When the long hose 20 reaches the bent portion 6a such as the elbow of the existing pipe 6 while the long hose 20 is being inverted and inserted in the existing pipe 6, the inside of the outer peripheral surface of the bent portion 6a becomes a wall. However, at this time, when the end portion of the thin film tube 21 is pulled or intermittently pulled by the tensioner 29, the thin film tube 21 is tensioned,
The tension of the thin film tube portion 21a of the thin film tube 21 is transmitted as it is to the long hose portion 20a on the outer peripheral side 6a 'of the bent portion of the existing pipe 6 that has advanced in the thin film tube 21 and acts in the tension direction, and the existing pipe Inner side of bent part on the opposite side of 6
Since the relaxed thin-film tube portion 21b of the thin-film tube 21 is in contact with the long hose portion 20b of 6b ', the long hose 20 is easily pushed by the inner peripheral wall of the bent portion 6a of the existing pipe 6 and is easily installed. It passes through the bent portion 6a of the pipe 6. Of course, during this process, the pressurized water must be of sufficient pressure to overcome the tension of the tensioned thin film tube 21 and cause the long hose 20 to expand to the inner wall surface of the existing pipe 6. Further, the thin film tube 21 may be momentarily tensioned when the long hose 20 approaches the bent portion 6a of the existing pipe 6, and may be in a relaxed state immediately after passing. Even if the existing pipe 6 has a plurality of bent portions 6a, the length of the existing pipe 6 can be increased by repeating the above-mentioned means each time the bending portion 6a is reached, or by keeping the tension state for the entire time of inversion / insertion. The hose 20 can be easily inverted and inserted.
このように、予め薄膜チューブ21が挿入されている既設
管６内への長尺ホース20の反転・挿入が終了すれば、次
に、圧力容器22内の水を温水にかえて長尺ホース20を加
熱するか、他の適当な加熱手段で長尺ホース20を加熱す
ると、長尺ホースの不織布層に含浸されている熱硬化性
樹脂は硬化し、既設管６内に均一な厚さの可撓性、自立
性を有する合成樹脂管とする反転・硬化した長尺ホース
20が薄膜チューブ21を介して略密着した形で形成され
る。When the inversion / insertion of the long hose 20 into the existing pipe 6 in which the thin film tube 21 is inserted in advance is completed in this way, next, the water in the pressure vessel 22 is changed to warm water and the long hose 20 is replaced. When the long hose 20 is heated by heating the long hose 20 or other suitable heating means, the thermosetting resin impregnated in the non-woven fabric layer of the long hose is hardened, so that the existing pipe 6 can have a uniform thickness. Inverted and hardened long hose with flexible and self-supporting synthetic resin tube
The thin film 20 is formed in a close contact with the thin film tube 21.
この場合加熱硬化中、熱硬化性樹脂が低粘稠となって
も、第７図に示す既設管６のズレやハズレにより生ず
る、管継手部の隙間30,第８図に示す既設管６の管体欠
損部の隙間31,第９図に示す既設管６のクラックの隙間3
2と内部劣化部（部分的に薄い管厚）33などから熱硬化
性樹脂がしみだし、地下水によって流失して該周囲の樹
脂含浸率の低下による反転・硬化した長尺ホースの機械
的強度の低下や地下水による硬化不良も防ぐことができ
ることになる。また、既設管６内に薄膜チューブ21を介
在させて長尺ホース20を反転・挿入して硬化させている
から、従来の内張り材１の内周面に接着剤７を塗布して
おき、その後該内張り材１を管路６内に反転・挿入して
内張り材１を管路６の内壁面に接着させる方法の実施の
際に接着を十分に行うために必要であった管路６の内壁
面に対するドライサンドブラストなどの高級な下地処理
が不要となった。In this case, even if the thermosetting resin becomes low in viscosity during the heat curing, the gap 30 of the pipe joint portion caused by the displacement or loss of the existing pipe 6 shown in FIG. 7 and the existing pipe 6 shown in FIG. Gap 31 in the tube defect, Gap 3 in the existing pipe 6 shown in FIG. 9
2 and internal deteriorated part (partially thin pipe thickness) 33 exudes thermosetting resin, which is washed away by ground water and the mechanical strength of the long hose that has been reversed / hardened due to a decrease in resin impregnation rate around the ground It is possible to prevent deterioration and curing failure due to groundwater. Further, since the long hose 20 is inverted / inserted and cured by interposing the thin film tube 21 in the existing pipe 6, the adhesive 7 is applied to the inner peripheral surface of the conventional lining material 1 and then The inside of the conduit 6 which was necessary for sufficient adhesion when the method of adhering the inside lining 1 to the inner wall surface of the conduit 6 by inverting and inserting the lining 1 into the conduit 6 was performed. No need for high-quality groundwork such as dry sandblasting on the wall.
［発明の効果］ この発明は以上説明したとおり、既設管より長い薄膜チ
ューブを長尺ホースの既設管への反転・挿入前に予め既
設管内にその全長にわたって引き込んでおき、その薄膜
チューブの圧力容器側先端を既設管外で固定するか、自
由端とし、しかる後に圧力流体によって既設管中に内側
に熱硬化性樹脂層を有する長尺ホースの反転・挿入を行
うが、長尺ホースの反転が既設管の屈曲部にさしかかっ
た時に薄膜チューブの非挿入側の端部を牽引又は断続牽
引し、薄膜チューブを緊張させた状態で長尺ホースの反
転・挿入を行うから、薄膜チューブ内を反転・進行して
きた既設管の屈曲部外周側の長尺ホース部分には薄膜チ
ューブの緊張薄膜チューブ部分の張力がそのまま伝達さ
れて緊張方向に作用すると共に既設管の反対側屈曲部内
周側の長尺ホース部分には薄膜チューブの弛緩薄膜チュ
ーブ部分が接触しているから、既設管の屈曲部の内側内
周壁に押圧されて、長尺ホースは既設管の屈曲部を通過
し、複数の屈曲部を有する既設管、三次元形状の既設管
であっても連続的に長尺ホースの反転・挿入が容易に行
えるという効果がある。[Effect of the Invention] As described above, according to the present invention, a thin-film tube longer than an existing pipe is previously drawn into the existing pipe over its entire length before inversion / insertion of the long hose into the existing pipe, and the thin-film tube pressure vessel is inserted. Fix the side end outside the existing pipe or make it a free end, and then invert / insert the long hose having the thermosetting resin layer inside the existing pipe by pressure fluid, but When approaching the bent part of the existing pipe, the non-insertion side end of the thin film tube is towed or intermittently towed, and the long hose is turned over and inserted while the thin film tube is tensioned. The tension of the thin-film tube is transmitted as it is to the long hose portion on the outer peripheral side of the bent portion of the existing pipe, and the tension of the thin-film tube portion is transmitted as it is. Since the loose thin-film tube portion of the thin-film tube is in contact with the long hose portion on the side, the long hose passes through the bent portion of the existing pipe and is pressed by the inner peripheral wall of the bent portion of the existing pipe. Even if it is an existing pipe having a bent portion or an existing pipe having a three-dimensional shape, it is possible to continuously and easily invert and insert the long hose.
更に、かかる効果に合わせて長尺ホースが屈曲部を有す
る既設管内に反転・挿入されたら、長尺ホースの熱効化
性樹脂層を加熱して硬化させると、既設管と硬化した長
尺ホースとの間に薄膜チューブが全体に介在させられる
から、加熱硬化中、熱硬化性樹脂が低粘稠となっても、
既設管のズレやハズレにより生ずる、管継手部の隙間，
管体欠損部の隙間，クラックの隙間と内部列下部（部分
的に薄い管厚）などから熱硬化性樹脂がしみだし、地下
水によって流失して該周囲の樹脂含浸率の低下による反
転・硬化した長尺ホースの機械的強度の低下や地下水に
よる硬化不良も防ぐことができることになる。Furthermore, if a long hose is turned over and inserted into an existing pipe having a bent portion according to such an effect, the heat-activatable resin layer of the long hose is heated and cured, and the existing pipe and the cured long hose are cured. Since the thin film tube is entirely interposed between and, even if the thermosetting resin becomes low in viscosity during heat curing,
The gap of the pipe joint part caused by the displacement or loss of the existing pipe,
The thermosetting resin oozes out from the gaps in the tubular body defects, the crack gaps, and the lower part of the inner row (partially thin pipe thickness), and is washed away by the groundwater and inverted / cured due to a decrease in the resin impregnation rate of the surroundings. It is possible to prevent the mechanical strength of the long hose from decreasing and the curing failure due to groundwater.
更に、反転・挿入して硬化した長尺ホースは既設管の内
壁面に薄膜チューブを介して位置し、接着することは期
待されていないから、従来のように既設管に高級な下地
処理を施す必要がなくなり、手間がかからず、コストの
低減化が図れ、しかも接着不良による部分座屈もなくな
る効果もある。Furthermore, since the long hose that has been inverted / inserted and hardened is located on the inner wall surface of the existing pipe via the thin film tube, and it is not expected to be bonded, the existing pipe is subjected to high-grade base treatment as in the past. There is no need, labor is saved, cost can be reduced, and partial buckling due to poor adhesion is also eliminated.
第１図はこの発明方法の一実施例で、長尺ホースの反転
・挿入過程を示す断面図、第２図は既設管内における薄
膜チューブの状態を示す断面図、第３図は圧力容器によ
る既設管内における長尺ホースの反転・挿入過程を示す
断面図、第４図は既設管間における薄膜チューブと反転
状態の長尺ホースを示す断面図、第５図は反転した長尺
ホースが既設管の屈曲部分を通過する直前の状態を示す
断面図、第６図は反転した長尺ホースが既設管の屈曲部
分を通過する状態を示す断面図、第７図はこの発明方法
が実施された既設管の管継手部分を示す断面図、第８図
は同既設管の管体欠損部分を示す断面図、第９図は同既
設管のクラック部分及び内部劣化部分を示す断面図であ
る。 第10図は例えば従来の管路の内張り方法の実施状態を示
す縦断面図、第11図（ａ），（ｂ），（ｃ），（ｄ），
（ｅ），（ｆ）は従来方法において内張り材の折り返し
部分が管路の屈曲部分を通過する状態をそれぞれ示す説
明図である。 ６……既設管、6a……屈曲部、20……長尺ホース、21…
…薄膜チューブ、22……圧力容器、22a……先端筒、27
……加圧水。FIG. 1 is an embodiment of the method of the present invention, a cross-sectional view showing the process of reversing and inserting a long hose, FIG. 2 is a cross-sectional view showing the state of a thin film tube in an existing pipe, and FIG. Sectional view showing the inversion / insertion process of the long hose in the pipe, FIG. 4 is a cross-sectional view showing the thin film tube between the existing pipes and the long hose in the inverted state, and FIG. 5 is the inverted long hose of the existing pipe. 6 is a sectional view showing a state immediately before passing through a bent portion, FIG. 6 is a sectional view showing a state in which an inverted long hose passes through a bent portion of an existing pipe, and FIG. 7 is an existing pipe in which the method of the present invention is carried out. 8 is a sectional view showing a pipe joint portion, FIG. 8 is a sectional view showing a tubular body defective portion of the existing pipe, and FIG. 9 is a sectional view showing a crack portion and an internally deteriorated portion of the existing pipe. FIG. 10 is, for example, a longitudinal sectional view showing a state of implementation of a conventional pipe line lining method, and FIGS. 11 (a), (b), (c), (d),
(E), (f) is explanatory drawing which shows the state which the folding | returning part of a lining material passes the bending part of a pipe line in the conventional method, respectively. 6 ... Existing pipe, 6a ... Bend, 20 ... Long hose, 21 ...
… Thin film tube, 22 …… Pressure vessel, 22a …… Tip tube, 27
...... Pressurized water.
Claims (1)
その全長にわたって引き込み、その薄膜チューブの圧力
容器側先端を既設管外で固定するか自由端とし、しかる
後に内側に熱硬化性樹脂層を有する長尺ホースを圧力容
器内を通過させて圧力容器の前部に設けられた先端筒か
ら引き出し、長尺ホースの先端を折り返して先端筒の外
周に環状に固定し、その後圧力容器内に圧力流体を導入
して長尺ホースの環状固定部分を前進せしめて既設管中
に長尺ホースの反転挿入を行い、長尺ホースの反転が既
設管の屈曲部にさしかかった時に薄膜チューブの非挿入
側端部を牽引又は断続牽引し、薄膜チューブを緊張させ
た状態で長尺ホースの反転挿入を行い、長尺ホースの圧
力流体による既設管内面への押圧力により、薄膜チュー
ブを既設管内周面に長尺ホースと一緒に内張りし、その
後長尺ホースの熱硬化性樹脂層を加熱して硬化させるよ
うにしたことを特徴とする管路の内張り方法。1. A thin-film tube longer than an existing pipe is drawn into the existing pipe over its entire length, and the tip of the thin-film tube on the pressure vessel side is fixed outside the existing pipe or set as a free end, after which a thermosetting resin layer is formed inside. Pass the long hose that has passed through the pressure vessel and pull it out from the tip tube provided in the front part of the pressure vessel, fold the tip of the long hose back and fix it annularly on the outer periphery of the tip tube, and then press the inside of the pressure vessel. The fluid is introduced to advance the annular fixed part of the long hose to reverse the insertion of the long hose into the existing pipe, and when the reversal of the long hose reaches the bent part of the existing pipe, the non-insertion side of the thin film tube Pulling the end part or intermittently pulling it and inserting the long hose in reverse with the thin film tube being tensioned, and pressing the thin hose against the inner surface of the existing tube by the pressure fluid of the long hose, the thin film tube is attached to the inner peripheral surface of the existing tube. Lined with long hoses, conduits method of the lining, characterized in that as heating and curing the thermosetting resin layer of the subsequent long hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085379A JPH0667595B2 (en) | 1988-04-08 | 1988-04-08 | Pipe line lining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085379A JPH0667595B2 (en) | 1988-04-08 | 1988-04-08 | Pipe line lining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01258937A JPH01258937A (en) | 1989-10-16 |
| JPH0667595B2 true JPH0667595B2 (en) | 1994-08-31 |
Family
ID=13857095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63085379A Expired - Lifetime JPH0667595B2 (en) | 1988-04-08 | 1988-04-08 | Pipe line lining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667595B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3309326B2 (en) * | 1992-11-04 | 2002-07-29 | 東京瓦斯株式会社 | Lined pipeline and method of lining |
| JP2008201062A (en) * | 2007-02-22 | 2008-09-04 | Airec Engineering Corp | Method for remedying pipe line |
-
1988
- 1988-04-08 JP JP63085379A patent/JPH0667595B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01258937A (en) | 1989-10-16 |
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