JPH0263722A - Method for lining pipeline - Google Patents
Method for lining pipelineInfo
- Publication number
- JPH0263722A JPH0263722A JP21789988A JP21789988A JPH0263722A JP H0263722 A JPH0263722 A JP H0263722A JP 21789988 A JP21789988 A JP 21789988A JP 21789988 A JP21789988 A JP 21789988A JP H0263722 A JPH0263722 A JP H0263722A
- Authority
- JP
- Japan
- Prior art keywords
- lining material
- pipe
- lining
- pipeline
- pressure
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 87
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims abstract description 21
- 238000007689 inspection Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ガス導管、水道管、電力線や通信線等の敷設
管路等の、主として地中に埋設された管路に対し、補修
、補強等の目的で内張すするための方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is useful for repairing, reinforcing, etc. mainly underground pipelines, such as gas pipes, water pipes, power lines, communication lines, etc. This invention relates to a method for lining for the purpose of.
従来の技術
近年、前述のような管路について、該管路の補修又は補
強の目的で、管路の内面に柔軟な筒状の内張り材を貼付
けて内張すすることが行われている。そしてこの内張り
をするための方法として、予め内張り材内に接着剤を塗
布しておき、この内張りを流体圧力で内外面を反転しな
がら管路内に挿通すると共に、前記流体圧力で管路内面
に圧着し、次いで前記接着剤を硬化させ、管路と内張り
材とを接着する工法があり、近年特に注目されている。BACKGROUND OF THE INVENTION In recent years, for the purpose of repairing or reinforcing the above-mentioned conduit, flexible cylindrical lining material has been attached to the inner surface of the conduit to line the conduit. As a method for lining this lining, adhesive is applied to the lining material in advance, and the lining is inserted into the pipe while inverting the inner and outer surfaces using fluid pressure. There is a method that has attracted particular attention in recent years, in which the pipe line and the lining material are bonded by pressure bonding, and then the adhesive is cured.
この工法は、管路の両端部分のみを露出させるだけで、
長尺の管路について短時間で施工が可能であり、また管
路に屈曲部分があっても施工できる等多くの長所を有し
ているものであって、極めて優れた工法である。This construction method only exposes both ends of the pipe,
It is an extremely excellent construction method as it has many advantages such as being able to construct long pipes in a short time and also being able to work even if the pipe has bent parts.
またこめ工法においては、内張すされた内張り材に傷が
あると、その傷から内部の流体が滲出して漏出しなり、
また内張り材を管路から剥がしてその内張り材が管路を
閉塞する原因となるので、内張り材を管路に接着した後
にその内張すされた内張り材内に圧縮空気を封入し、相
当の時間に互って内張り材内の圧力低下を測定して漏気
検査をし、当該検査で漏気がないことを確認して内張り
工事の完了としていた。In addition, in the Kome construction method, if there is a scratch in the lining material, the internal fluid may seep out from the scratch and leak.
In addition, since the lining material may be peeled off from the pipe and cause the lining to block the pipe, compressed air is sealed in the lining after the lining is adhered to the pipe, and a considerable amount of air is Air leak tests were carried out by measuring the pressure drop within the lining material over time, and once it was confirmed that there were no air leaks, the lining work was completed.
発明が解決しようとする問題点
しかしながらこの方法によれば、接着剤を硬化させて内
張り材と管路とを接着した後に漏気検査を行っていたの
で、内張り材に傷があった場合においても、その周囲の
接着剤が硬化しているため、圧縮空気が漏気経路を形成
するに至らず、圧縮空気が見掛は上漏気しないために漏
気検査に合格することがある。しかしながらこのような
状態では、検査時には漏気しなくとも、長期間使用して
いるうちに接着剤が劣化して内部の流木が内張り材と管
路との間に滲込み、内張り材を剥がして管路を閉塞して
しまう恐れがある。すなわち漏気検査の信頼性が乏しい
のである。Problems to be Solved by the Invention However, according to this method, the air leakage test was performed after the adhesive was cured and the lining material and the pipe line were bonded together, so even if the lining material was damaged, the leakage test was performed. , because the adhesive around it has hardened, the compressed air does not form an air leak path, and the air leakage test may be passed because the compressed air does not appear to leak. However, under these conditions, even if there is no air leakage at the time of inspection, the adhesive deteriorates over a long period of use and the driftwood inside seeps between the lining material and the pipe, causing the lining material to peel off. There is a risk of clogging the duct. In other words, the reliability of the air leakage test is poor.
また漏気検査によって傷が発見された場合においては内
張り材を管路から剥がして再度側の内張り材で内張すし
直さなければならないのであるが、前記方法では内張り
材は管路に強固に接着されてしまっているので、これを
剥がすのは極めて困難である。In addition, if a flaw is found during an air leakage test, the lining material must be removed from the pipe and relined with a side lining material, but with the method described above, the lining material is firmly adhered to the pipe. It is extremely difficult to remove it as it has been removed.
本発明はかかる事情に鑑みなされたものであって、内張
り材を管路に挿通した後、接着剤を硬化させるに先立っ
て漏気検査を行い、内張り材に傷があるときには確実に
それを検出することができると共に、容易に内張り材を
剥がして内張すし直すことのできる方法を提供すること
を目的とするものである。The present invention has been developed in view of the above circumstances, and after the lining material is inserted into the pipe and before the adhesive is cured, an air leakage test is performed to ensure that any damage to the lining material is detected. It is an object of the present invention to provide a method in which the lining material can be easily peeled off and re-lined.
問題点を解決する手段
而して本発明は、管路の一端部において内面に反応硬化
型接着剤を塗布した柔軟な筒状の内張り材の一端を環状
に固定し、当該内張り材の管状固定部の後部に流体圧力
を作用させ、そこに形成される折返し部分において内張
り材を内側が外側となるように裏返しながら当該折返し
部分を管路の前記一端から他端にまで進行せしめ且つ裏
返された内張り材を前記流体圧力により管路内面に圧接
せしめ、然る後前記流体圧力を維持しつつ管路の後端部
を閉塞し、内張り材内に裏返し時の流体圧力よりも高圧
の圧縮空気を封入して漏気の有無を検査し、内張り材か
らの漏気が無いことを確認した後前記反応硬化型接着剤
を硬化させて内張り材を管路内面に接着することを特徴
とするものである。As a means to solve the problem, the present invention fixes one end of a flexible cylindrical lining material coated with a reaction-curing adhesive on the inner surface in an annular shape at one end of the pipe, and fixes the lining material in the tubular shape. Applying fluid pressure to the rear part of the pipe, and turning over the lining material at the folded part formed there so that the inside becomes the outside, the folded part is advanced from the one end to the other end of the conduit, and the folded part is turned over. The lining material is brought into contact with the inner surface of the pipe by the fluid pressure, and then the rear end of the pipe is closed while maintaining the fluid pressure, and compressed air with a higher pressure than the fluid pressure at the time of turning the lining material is introduced into the lining material. The pipe is sealed and inspected for air leakage, and after confirming that there is no air leakage from the lining material, the reaction curing adhesive is cured to bond the lining material to the inner surface of the pipe. be.
実施例 以下本発明の実施例を図面に従って説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
図面は、本発明の内張り方法の工程を示すものである０
図面において１は管路であって、該管路１の一端部に内
張り装置２が設けられている。内張り装置２において３
は圧力容器であって、該圧力容器３内には、内面に反応
硬化型接着剤を塗布した内張り材４を巻回したリール５
が回転自在に軸支されている。The drawings show the steps of the lining method of the present invention.
In the drawings, reference numeral 1 denotes a conduit, and a lining device 2 is provided at one end of the conduit 1. 3 in lining device 2
is a pressure vessel, and inside the pressure vessel 3 is a reel 5 wound with a lining material 4 whose inner surface is coated with a reaction-curing adhesive.
is rotatably supported.
圧力容器３の前下部には内張り材吐出口６が形成されて
いる。７は内張り材取付は金具であって、その先端部に
内張り材４を環状に固定しており、後端部には揺動自在
のシャッター８が取付けられており、後端には、前記圧
力容器３の内張り材吐出口６に着脱自在に取付けられる
接続金具９を有している。A lining material discharge port 6 is formed in the front lower part of the pressure vessel 3 . Reference numeral 7 denotes a metal fitting for attaching the lining material, and the lining material 4 is fixed annularly at the tip thereof.A swingable shutter 8 is attached to the rear end. It has a connecting fitting 9 that is detachably attached to the lining material discharge port 6 of the container 3.
また１０及び１１は、圧力容ａ３及び内張り材取付は金
具７に圧力流体を送入する圧力流木送入口であり、１２
は内張り材取付は金具７に取付けられた圧力ゲージであ
る。Further, 10 and 11 are pressure driftwood inlet ports for supplying pressure fluid to the pressure volume a3 and the fitting 7 for attaching the lining material, and 12
is a pressure gauge attached to the metal fitting 7.
第３図における１３は前記内張り材取付は金具７の接続
金具９の後端を閉塞する盲蓋であって、接続金具９の後
端に着脱自在に取付けることができるようになっている
。また第４図における１４は、前記内張り材取付は金具
７の接続金具９の後端に着脱自在に取付けられた鏡板で
あって、該錘板１４には、漏出管取付は金具１５と空気
送入口１６とが設けられている。１７は管路１の先端を
閉塞する先端金具である。Reference numeral 13 in FIG. 3 denotes a blind cover that closes the rear end of the connecting fitting 9 of the fitting 7, and can be detachably attached to the rear end of the connecting fitting 9. Reference numeral 14 in FIG. 4 is a head plate detachably attached to the rear end of the connecting fitting 9 of the fitting 7 for attaching the lining material, and the weight plate 14 includes a fitting 15 for attaching the leakage pipe and an air supply plate for attaching the leakage pipe. An entrance 16 is provided. Reference numeral 17 denotes a tip fitting that closes the tip of the conduit 1.
而して本発明においては、先ず管路１に内張り材取付は
金具−７、接続金具９及び圧力容器３を順次結合し、内
張り材取付は金具７のシャッター８を開いておき、圧力
容器３内の内張り材４の端末を内張り材吐出口６から引
出して内張り材取付は金具７内を通し、該内張り材取付
は金具７の先端部に環状に固定する。この状態が第１図
に示されている。In the present invention, first, to attach the lining material to the pipe line 1, the fitting 7, the connecting fitting 9, and the pressure vessel 3 are sequentially connected, and to attach the lining material, the shutter 8 of the fitting 7 is opened, and the pressure vessel 3 is attached. The end of the inner lining material 4 is pulled out from the lining material discharge port 6, the lining material is attached through the inside of the metal fitting 7, and the lining material is attached to the tip of the metal fitting 7 in an annular shape. This state is shown in FIG.
この状態で圧力流体送入口１０から圧力流体を送入し、
内張り材４の環状固定部分の後部を加圧する。これによ
り当該環状固定部分の内張り材４に折返し部分１８が形
成され、当該折返し部分１８において内張り材４が内側
が外側となるように裏返されながら、その折返し部分１
８が管路１内を進行する。In this state, pressure fluid is fed from the pressure fluid inlet 10,
The rear part of the annular fixed part of the lining material 4 is pressurized. As a result, a folded part 18 is formed in the lining material 4 of the annular fixed part, and while the lining material 4 is turned over at the folded part 18 so that the inside becomes the outside, the folded part 1
8 advances within the conduit 1.
そして裏返された内張り材４は、前記流体圧力により管
路１内面に圧接し、接着剤を介して管路１の内面に接着
する。内張り材４の裏返しの進行に伴って圧力容器３内
に収容された内張り材４が内張り材吐出口６から引出さ
れ、内張り材取付は金具７内を通・す、さらに裏返され
た内張り材４内を通って折返し部分１８に供給され、順
次裏返される。The turned-over lining material 4 is brought into pressure contact with the inner surface of the pipe line 1 by the fluid pressure, and is adhered to the inner surface of the pipe line 1 via an adhesive. As the lining material 4 is turned over, the lining material 4 housed in the pressure vessel 3 is pulled out from the lining material discharge port 6, and the lining material is attached by passing it through the metal fitting 7. The paper is supplied to the folded portion 18 through the inside, and is sequentially turned inside out.
内張り材４がその全長に互ってリール５から引出された
ならば、それに続いて内張り材４の自由端に結合された
漏気管１９が引出される。漏気管は柔軟な管であって、
全周に互って多数の微細な漏気孔が形成されている。Once the lining material 4 has been withdrawn from the reel 5 over its entire length, the leakage pipe 19 connected to the free end of the lining material 4 is subsequently withdrawn. The leak pipe is a flexible pipe,
A large number of fine air leak holes are formed around the entire circumference.
内張り材４がその全長に互って裏返されると、第２図に
示すように折返し部分１８が先端金具１７に到達すると
共に、裏返された内張り材４の全長に互ってその中に漏
気管１９が挿通された状態となる。When the lining material 4 is turned over over its entire length, the folded portion 18 reaches the tip fitting 17 as shown in FIG. The trachea 19 is now inserted.
次に第３図に示すように、内張り材取付は金具７の圧力
流体送入口１１から圧力流体を送入して内張り材４内の
流体圧力を維持しつつ、シャンター８を閉じ、接続金具
９の後端から圧力容器３を取外し、そこに盲蓋１３を取
付けて接続金具９後端を閉塞し、内張り材４内を密閉す
る。漏気管１つの自由端部は折畳んで、接続金具９内に
収容しておく。Next, as shown in FIG. 3, to attach the lining material, pressurized fluid is supplied from the pressure fluid inlet 11 of the metal fitting 7 to maintain the fluid pressure inside the lining material 4, the shunter 8 is closed, and the connecting fitting 9 is closed. The pressure vessel 3 is removed from the rear end, and a blind lid 13 is attached thereto to close the rear end of the connection fitting 9 and seal the inside of the lining material 4. The free end of one of the leakage pipes is folded and housed in the connecting fitting 9.
そして圧力流体送入口１１から圧縮空気を送入して漏気
検査をする。すなわち圧力流体送入口１１から裏返し時
より高圧の圧縮空気を送入して当該圧力流体送入口１１
を閉塞し、所定の時間放置する。圧力ゲージ１２で内張
り材取付は金具７内の圧力を点検する。Then, compressed air is introduced from the pressure fluid inlet 11 to perform an air leakage test. That is, compressed air with a higher pressure than when turning over is sent from the pressure fluid inlet 11 to the pressure fluid inlet 11.
occlude it and leave it for a specified period of time. When installing the lining material, check the pressure inside the fitting 7 using the pressure gauge 12.
内張り材４に漏気が無いことを確認した後、再度内張り
材４内の圧力を維持しつつ盲蓋１３を取外し、代って鏡
板１４を取付け、当該鏡板１４の漏出管取付は金具１５
に漏気管１９の端末を取付ける。After confirming that there is no air leakage from the lining material 4, the blind cover 13 is removed while maintaining the pressure inside the lining material 4, and the end plate 14 is installed in its place.
Attach the end of the leakage pipe 19 to.
然る後、漏出管取付は金具１５から漏気管１９内に加圧
水蒸気等の加熱流体を送入し、該加熱流体を漏気孔から
内張り材４と漏気管１つとの間に漏出せしめ、その加熱
流体の熱により接着剤を硬化せしめ、内張り材４を管路
１の内面に強固に接着せしめる。After that, the leakage pipe is installed by feeding a heating fluid such as pressurized steam into the leakage pipe 19 from the metal fitting 15, causing the heating fluid to leak from the leakage hole between the lining material 4 and one of the leakage pipes, and heating the fluid. The adhesive is cured by the heat of the fluid, and the lining material 4 is firmly adhered to the inner surface of the pipe line 1.
作用
本発明においては、内張り材４を裏返して管路１内面に
圧着し、然る後内張り材４の漏気検査を行う。この時点
においては接着剤は硬化していないので、内張り材４に
傷があった場合には検査用の圧縮空気がその傷の部分か
ら接着剤を押退けて漏出することができ、内張り材４内
の圧力が低下する。従って十分に信頼できる漏気検査を
することができる。Function In the present invention, the lining material 4 is turned over and crimped onto the inner surface of the conduit 1, and then the lining material 4 is inspected for air leakage. At this point, the adhesive has not hardened, so if there is a scratch on the lining material 4, the compressed air for inspection can displace the adhesive from the scratched area and leak out. The internal pressure decreases. Therefore, a sufficiently reliable leakage test can be performed.
また漏気検査により内張り材４の傷が発見されたときは
、接着剤が未硬化で内張り材４と管路１との接着が不十
分であるので、漏気管１９を逆に引戻すことにより内張
り材４を管路１から剥がずことができ、新たな傷のない
内張り材４により内張すし直すことができる。Furthermore, if a flaw in the lining material 4 is found during an air leakage test, the adhesive is not yet cured and the adhesion between the lining material 4 and the pipe line 1 is insufficient. The lining material 4 can be removed from the conduit 1 and can be relined with a new, undamaged lining material 4.
発明の効果
本発明によれば、接着剤の硬化に先立って漏気検査を行
うので、内張り材４の傷があってもこれを見逃すことが
なく、漏気検査の信頼性が高いものとなる。Effects of the Invention According to the present invention, since the air leakage test is performed before the adhesive hardens, even if there is a flaw in the lining material 4, it will not be overlooked, and the reliability of the air leakage test will be high. .
また、漏気検査により内張り材４に傷が発見されたとき
は、当該内張り材４を容易に剥がすことができ、再度無
傷の内張り材４で内張すすることができる。Moreover, when a flaw is found in the lining material 4 by an air leakage test, the lining material 4 can be easily peeled off and the lining material 4 can be lined with an undamaged lining material 4 again.
図面は本発明の方法により管路に内張すする工程を示す
ものであって、第１図は内張りを開始する状態、第２図
は内張り材を管路に挿通した状態、第３図は漏気検査を
している状態、第４図は接着剤を硬化させている状態を
示す。
加温する状態における、主要部の中央縦断面図である。The drawings show the process of lining a pipe by the method of the present invention, in which Fig. 1 shows the state in which lining has started, Fig. 2 shows the state in which the lining material has been inserted into the pipe, and Fig. 3 shows the state in which the lining material has been inserted into the pipe. Figure 4 shows a state in which an air leakage test is being performed, and a state in which the adhesive is being cured. FIG. 3 is a central vertical cross-sectional view of the main part in a heated state.
Claims (1)
剤を塗布した柔軟な筒状の内張り材（４）の一端を環状
に固定し、当該内張り材（４）の管状固定部の後部に流
体圧力を作用させ、そこに形成される折返し部分（１８
）において内張り材（４）を内側が外側となるように裏
返しながら当該折返し部分（１８）を管路（１）の前記
一端から他端にまで進行せしめ且つ裏返された内張り材
（４）を前記流体圧力により管路（１）内面に圧接せし
め、然る後前記流体圧力を低下させることなく、内張り
材（４）内に裏返し時の流体圧力よりも高圧の圧縮空気
を封入して漏気の有無を検査し、内張り材（４）からの
漏気が無いことを確認した後前記反応硬化型接着剤を硬
化させて内張り材（４）を管路（１）内面に接着するこ
とを特徴とする、管路の内張り方法1 At one end of the pipe line (1), one end of a flexible cylindrical lining material (4) coated with a reaction-curing adhesive on the inner surface is fixed in an annular shape, and the rear part of the tubular fixed part of the lining material (4) is fixed. Apply fluid pressure to the folded part (18
), the lining material (4) is turned over so that the inside becomes the outside, and the folded part (18) is advanced from the one end to the other end of the pipe (1), and the turned lining material (4) is turned over so that the inside becomes the outside. The inner surface of the pipe (1) is brought into contact with the fluid pressure, and then, without reducing the fluid pressure, compressed air with a higher pressure than the fluid pressure at the time of turning over is sealed in the lining material (4) to prevent air leakage. The lining material (4) is bonded to the inner surface of the pipe (1) by curing the reaction-curing adhesive after inspecting the presence of air and confirming that there is no air leakage from the lining material (4). How to line pipes
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21789988A JP2721897B2 (en) | 1988-08-30 | 1988-08-30 | Pipe line lining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21789988A JP2721897B2 (en) | 1988-08-30 | 1988-08-30 | Pipe line lining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0263722A true JPH0263722A (en) | 1990-03-05 |
| JP2721897B2 JP2721897B2 (en) | 1998-03-04 |
Family
ID=16711502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21789988A Expired - Fee Related JP2721897B2 (en) | 1988-08-30 | 1988-08-30 | Pipe line lining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2721897B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012066471A (en) * | 2010-09-22 | 2012-04-05 | Yokoshima & Co | Renewed pipe line inspection method and pipe line renewal method including the same |
| JP2014113757A (en) * | 2012-12-10 | 2014-06-26 | Sekisui Chem Co Ltd | Reversing apparatus |
| GB2541430A (en) * | 2015-08-19 | 2017-02-22 | Pioneer Lining Tech Ltd | Improved pipe lining leak test |
-
1988
- 1988-08-30 JP JP21789988A patent/JP2721897B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012066471A (en) * | 2010-09-22 | 2012-04-05 | Yokoshima & Co | Renewed pipe line inspection method and pipe line renewal method including the same |
| JP2014113757A (en) * | 2012-12-10 | 2014-06-26 | Sekisui Chem Co Ltd | Reversing apparatus |
| GB2541430A (en) * | 2015-08-19 | 2017-02-22 | Pioneer Lining Tech Ltd | Improved pipe lining leak test |
| US10465834B2 (en) | 2015-08-19 | 2019-11-05 | Pioneer Lining Technology Limited | Pipe lining leak testing methods and apparatus |
| GB2541430B (en) * | 2015-08-19 | 2020-01-15 | Pioneer Lining Tech Limited | Improved Pipe Lining Leak Testing Methods and Apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2721897B2 (en) | 1998-03-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |