JPH04161325A - Reverse lining method for pipe - Google Patents
Reverse lining method for pipeInfo
- Publication number
- JPH04161325A JPH04161325A JP28998090A JP28998090A JPH04161325A JP H04161325 A JPH04161325 A JP H04161325A JP 28998090 A JP28998090 A JP 28998090A JP 28998090 A JP28998090 A JP 28998090A JP H04161325 A JPH04161325 A JP H04161325A
- Authority
- JP
- Japan
- Prior art keywords
- main pipe
- pipe
- adhesive
- dam
- branch pipe
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 22
- 230000002441 reversible effect Effects 0.000 title abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims description 35
- 238000004891 communication Methods 0.000 claims description 2
- 241000282887 Suidae Species 0.000 abstract description 9
- 230000004075 alteration Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1651—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being everted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
- B29C63/36—Lining or sheathing of internal surfaces using tubular layers or sheathings being turned inside out
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- 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〕
本発明はガス管、水道管、地下埋設管等の管の反転ライ
ニング方法に係り、詳しくは筒状の管内ライニング用長
尺体を径方向に折畳み、その折畳んだ前記長尺体の一端
を分岐管を連通接続した主管の端部部位に固定した状態
で、前記主管の一端側から前記長尺体内に加圧流体を供
給しながら前記長尺体の内面を外側に反転させ、反転し
た前記長尺体の外側面を接着剤を介して前記主管内面に
接着させる管の反転ライニング方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for reversing lining pipes such as gas pipes, water pipes, underground pipes, etc. With one end of the folded elongated body fixed to the end portion of the main pipe to which the branch pipe is connected, pressurized fluid is supplied into the elongated body from one end of the main pipe. The present invention relates to a pipe reversal lining method, which involves inverting the inner surface of a long body outward, and bonding the reversed outer surface of the long body to the inner surface of the main pipe via an adhesive.
この種の管の反転ライニング方法として、従来では、予
じめライニングチューブ内に接着剤を塗布しておき、施
工現場での接着剤塗布工程を省略した方法と、施工現場
で管内に接着剤を注入するとともに、この接着剤の前側
にその前方への流出を防ぐせき止め具を配置し、ライニ
ングチューブの反転部分か接着剤を介してせき止め具を
押し進める方法とかある。Conventionally, there are two methods for invert lining this kind of pipe: one is to apply adhesive to the inside of the lining tube in advance and omit the adhesive application process at the construction site, and the other is to apply adhesive to the inside of the pipe at the construction site. There is a method of injecting the adhesive, placing a dam on the front side of the adhesive to prevent it from flowing forward, and pushing the dam through the reversed portion of the lining tube or the adhesive.
前記前者の方法では、ライニングチューブ内面に必要量
だけの接着剤が供給されているので、管に分岐管が存在
していても、その分岐管に接着剤が侵入し難いのである
が、予じめの塗布作業に多くの時間が必要になったり、
接着剤が施工前に硬化するのを防止するために、施工時
までライニングチューブを冷却しなければならない不便
さがあり、前記後者の方法では施工作業能率の点では前
記前者の方法よりも改善されるが、分岐管が存在してい
ると、該分岐管に接着剤が侵入してしまい、後工程で行
う分岐管の開口作業が困難になる不都合が生じるといっ
た具合に、いずれの方法においても改善の余地が残され
ていた。In the former method, the required amount of adhesive is supplied to the inner surface of the lining tube, so even if there is a branch pipe in the pipe, it is difficult for the adhesive to enter the branch pipe. It takes a lot of time to apply the liquid,
In order to prevent the adhesive from hardening before installation, there is the inconvenience of having to cool the lining tube until the time of installation, and the latter method is improved over the former method in terms of construction work efficiency. However, if there is a branch pipe, the adhesive will enter the branch pipe, making it difficult to open the branch pipe in a later process. There was room left for.
本発明は分岐管が存在していても、その分岐管に接着剤
が侵入しないように、かつ、能率良く施工作業を行うこ
とが可能な管の反転ライニング方法を提供する点に目的
を有する。An object of the present invention is to provide a method for reversing lining a pipe, which prevents adhesive from entering the branch pipe even if there is a branch pipe, and allows construction work to be carried out efficiently.
上記目的のために本発明は、冒頭に記載した管の反転ラ
イニング方法において、前記主管内において前記長尺体
の前方に接着剤を充填した状態で、その接着剤の前後両
側に一対の接着剤せき止め具を前記主管内で摺動自在に
配置し、前記接着剤の後方に配置した第１せき止め具と
前記主管内面との間の気密度よりも、前記接着剤の前方
に配置した第２せき止め具と前記主管内面との間の気密
度の方を低く設定して、前記長尺体を反転させながら前
記両せき止め具を押し進め、前記分岐管内には加圧流体
を供給しながらその分岐管内の圧力を検知し、前記主管
と前記分岐管との接続部に対する前記両せき止め具の通
過を、前記分岐管内の検出圧力の差で判別し、前記接続
部の前記第１せき止め具通過判別に基づいて前記分岐管
内への加圧流体の供給を停止することを特徴とする。For the above-mentioned purpose, the present invention provides, in the pipe reversal lining method described at the beginning, in a state where an adhesive is filled in the front of the elongated body in the main pipe, a pair of adhesives are placed on both the front and rear sides of the adhesive. A dam is slidably disposed within the main pipe, and a second dam is arranged in front of the adhesive with a higher airtightness between the first dam which is arranged behind the adhesive and the inner surface of the main pipe. The airtightness between the tool and the inner surface of the main pipe is set lower, and while the elongated body is inverted, both the damming tools are pushed forward, and the pressure inside the branch pipe is supplied while the pressurized fluid is being supplied into the branch pipe. Detecting the pressure, determining whether the two dam stoppers pass through the connection between the main pipe and the branch pipe based on the difference in detected pressure in the branch pipe, and based on the determination of passage of the first dam stop at the connection part. The method is characterized in that the supply of pressurized fluid into the branch pipe is stopped.
前記特徴手段によると、接着剤は施工現場にて管内に注
入するようになるので、作業能率を良好なものにできる
とともに、第２せき止め具によって接着剤の前方への流
出（垂れ）か極力防止できる。According to the characteristic means, since the adhesive is injected into the pipe at the construction site, work efficiency can be improved, and the second dam prevents the adhesive from flowing forward (dripping) as much as possible. can.
加圧流体が供給されている分岐管との接続部位に接着剤
前方の第２せき止め具が差し掛かると、主管への連通開
口面積が急激に小となって分岐管内の圧力が上昇変化し
、それによって第２せき止め具が分岐管との接続部に到
達したことが判別できる（第４図参照）。When the second dam in front of the adhesive approaches the connection site with the branch pipe to which pressurized fluid is supplied, the area of the communication opening to the main pipe suddenly decreases, and the pressure inside the branch pipe increases and changes. Thereby, it can be determined that the second dam has reached the connection part with the branch pipe (see FIG. 4).
そして、分岐管との接続部に両せき止め具間に介在され
る接着剤層か差し掛かっても、供給される加圧流体の圧
力によって接着剤が主管から分岐管内へ流入するのを防
止できるとともに、接着剤の後方にある第１せき止め具
と主管との気密度が第２せき止め具と主管との気密度よ
りも高く設定することによって、分岐管内の加圧流体か
主管内に及ぶことがあっても、その加圧流体は接着剤層
と第２せき止め具と主管との間を通って前方の主管内へ
排出されるようになり、第１せき止め具を通り越して反
転部分へ供給されてしまって、ライニング材の主管内面
への接着具合に悪影響か及はすことか防止される（第５
図参照）。また前述したように第２せき止め具か分岐管
との接続部位を通過する際に、加圧流体が主管内へ及ぶ
場合でも、同様に画せき止め具の気密度差によって第２
せき止め具前方へと排出される（第４図参照）。Even if the adhesive layer interposed between the two dams approaches the connection with the branch pipe, the pressure of the supplied pressurized fluid can prevent the adhesive from flowing from the main pipe into the branch pipe. By setting the airtightness between the first damming device behind the adhesive and the main pipe to be higher than the airtightness between the second damming device and the main pipe, pressurized fluid in the branch pipe may reach the inside of the main pipe. However, the pressurized fluid passes between the adhesive layer, the second dam, and the main pipe, and is discharged into the main pipe in front, passing through the first dam and being supplied to the inverted part. , the adhesion of the lining material to the inner surface of the main pipe is prevented (fifth)
(see figure). Furthermore, as mentioned above, even if the pressurized fluid reaches into the main pipe when passing through the connection between the second dam and the branch pipe, the difference in airtightness between the two dams will cause the second
It is ejected to the front of the dam (see Figure 4).
次に、第１せき止め具が分岐管との接続部位゛ に差
し掛かると、前述した気密度差によって分岐管内の圧力
が再び上昇変化し、それによって第１せき止め具が該接
続部に到達したことが判別できる。従って、第１せき止
め具の通過判別に基づいて加圧流体の供給を停止すれば
、該加圧流体がライニングの反転部分に作用してしまう
不都合を的確に防ぐようになる。Next, when the first dam reaches the connection point with the branch pipe, the pressure inside the branch pipe rises again due to the airtightness difference mentioned above, and as a result, the first dam reaches the connection point. can be determined. Therefore, if the supply of the pressurized fluid is stopped based on the determination that the first dam has passed, the inconvenience of the pressurized fluid acting on the reversed portion of the lining can be accurately prevented.
その結果、主管との気密度に差をもった２個のせき止め
具を用いる比較的簡単な手段の変更によって、施工現場
で接着剤の注入をする能率的な施工方法を採りなからも
、分岐管への接着剤侵入を防止して接続部の開口作業が
容易となる実用上有用な管の反転ライニング方法を提供
することができた。As a result, by changing the relatively simple method of using two damming devices with different airtightness from the main pipe, it was found that branch pipes could be constructed without using the efficient construction method of injecting adhesive at the construction site. It was possible to provide a practically useful method for reversing lining a pipe, which prevents adhesive from entering the pipe and facilitates the opening operation of the joint.
請求項３記載の管の反転ライニング方法では、第１せき
止め具の通過判別可能時間を減速前の進行速度の状態に
比べて増やせるので、加圧流体の供給停止をより確実に
行なえる利点かある。The pipe reversal lining method according to claim 3 has the advantage that the time during which it is possible to determine the passage of the first damming device can be increased compared to the state of the traveling speed before deceleration, so that the supply of pressurized fluid can be stopped more reliably. .
以下に、本発明による管の反転ライニング方法の実施例
を説明する。In the following, an embodiment of the method for reversing lining a pipe according to the present invention will be described.
第１図は長尺体であるライニングチューブで管内をライ
ニングする原理を示す断面図である。FIG. 1 is a sectional view showing the principle of lining the inside of a pipe with a long lining tube.
地面（１）には流体（例えばガス、水等）を輸送するた
めの鋼製、鋳鉄製あるいは合成樹脂製の主管（２）か埋
設されている。ライニングすべき成る距離を隔てて、主
管（２）か露出するように堅坑（３）、 （４）か掘削
される。堅坑（３）、 （４）に露出した主管（２）は
部分的に切除されている。A main pipe (2) made of steel, cast iron, or synthetic resin is buried in the ground (1) for transporting fluids (eg gas, water, etc.). Pit holes (3) and (4) are excavated to expose the main pipe (2), separated by the distance to be lined. The main pipe (2) exposed in the shafts (3) and (4) has been partially excised.
（１５）は第１せき止め具である第１ピグ、（２０）は
第２せき止め具である第２ピグ、（１６）は接着剤、（
１７）は牽引索であるベルト、（５）はライニングチュ
ーブであり、ベルト（１７）は折畳んだ状態のライニン
グチューブ（５）に内装されている。(15) is a first pig which is a first dam stopper, (20) is a second pig which is a second dam stopper, (16) is an adhesive, (
17) is a belt which is a tow rope, (5) is a lining tube, and the belt (17) is installed inside the lining tube (5) in a folded state.
ライニングチューブ（５）は主管（２）の内径とほぼ等
しいかやや大きい外径を有しており、送出し装置（６）
および送風機（７）によってチューブ内面が外側になる
ように反転された状態で主管（２）内に挿入される。The lining tube (5) has an outer diameter that is approximately equal to or slightly larger than the inner diameter of the main pipe (2), and has an outer diameter that is slightly larger than the inner diameter of the main pipe (2).
The tube is then inverted by the blower (7) so that the inner surface of the tube faces outward, and is inserted into the main pipe (2).
送出し装置（６）の密閉ケーシング（８）内にはリール
（９）が設けられている。このリール（９）には、ベル
ト（１７）か内装されて、扁平に折りたたまれたライニ
ングチューブ（５）が巻回されている。ライニングチュ
ーブ（５）の端部（１０）は、主管（２）の堅坑（３）
側に臨む一端側で、ケーシング（８）に形成された開口
（１１）を外周して固定される。ケーシング（８）内に
は、第１送風機（７）によって圧縮空気か送入される。A reel (9) is provided within the closed casing (8) of the delivery device (6). A belt (17) is placed inside the reel (9), and a flat folded lining tube (5) is wound around the reel (9). The end (10) of the lining tube (5) is connected to the hard hole (3) of the main pipe (2).
One end facing the side is fixed around an opening (11) formed in the casing (8). Compressed air is fed into the casing (8) by a first blower (7).
また、ベルト（１７）はその断面か第２図に示すように
偏平な長方形状であり、主管（２）の出口側の堅坑（４
）に備えた巻取り牽引装置（１８）によって引張られる
ようになっている。ベルト（１７）は第１、第２ピグ（
１５）、 （２０）に形成されたベルト挿通孔（１９）
、 （２１）に通した状態で牽引装置（１８）に連結す
る。The belt (17) has a flat rectangular cross section as shown in Fig. 2, and the belt (17) has a hard shaft (4
) is adapted to be pulled by a winding and traction device (18) provided at. The belt (17) connects the first and second pigs (
15), belt insertion hole (19) formed in (20)
, (21) and is connected to the traction device (18).
前記牽引装置（１８）でベルト（１７）を牽引すること
、およびケーシング（８）内に圧縮空気が送入されるこ
とによって、ライニングチューブ（５）の反転部分（１
２）か前進方向（１３）の後方（１４）で加圧され、も
って、反転部分（１２）は矢符（１３）の方向に前進す
る。それによって、ライニングチューブ（５）は、主管
（２）の堅坑（３）側の一端から堅坑（４）側の他端に
向けて主管（２）内を挿通される。By pulling the belt (17) with the traction device (18) and introducing compressed air into the casing (8), the inverted portion (1) of the lining tube (5)
2) is pressurized at the rear (14) in the forward direction (13), so that the reversible portion (12) moves forward in the direction of the arrow (13). Thereby, the lining tube (5) is inserted into the main pipe (2) from one end of the main pipe (2) on the shaft (3) side to the other end on the shaft (4) side.
第３図に示すように、第２ピグ（２０）にはその外周に
主管（２）の長手方向に沿う微少な凹入溝（２２）を複
数箇所形成してあるとともに、第１ピグ（１５）はその
外周と主管（２）内面（２３）とを密嵌合状態に形成し
てあり、両ピグ（１５）、 （２０）ともに主管（２）
内で摺動可能であるが、前記凹入溝（２２）の存在によ
って第１ピグ（１５）と主管（２）内面（２３）との間
の気密度よりも第２ピグ（２０）と主管（２）内面（２
３）との間の気密度の方か低く設定されている。As shown in FIG. 3, the second pig (20) has a plurality of minute grooves (22) formed on its outer periphery along the longitudinal direction of the main pipe (2), and the first pig (15) ) is formed so that its outer periphery and the inner surface (23) of the main pipe (2) are tightly fitted, and both pigs (15) and (20) are connected to the main pipe (2).
However, due to the presence of the recessed groove (22), the airtightness between the first pig (15) and the inner surface (23) of the main pipe (2) is lower than that between the second pig (20) and the main pipe (2). (2) Inner surface (2
3) The airtightness is set to be lower than that between 3).
また、両ピグ（１５）、 （２０）共にベルト（１７）
との接触面積よりも主管（２）内面との接触面積を大き
くしてあり、これによってこれら両ビグ（１５）。Also, both pigs (15) and (20) have belts (17).
The contact area with the inner surface of the main pipe (2) is made larger than the contact area with the inner surface of the main pipe (2).
（２０）は主管（２）内面との摩擦力をベルト（１７）
との摩擦力よりも大に設定してある。その結果、両ピグ
（１５）、 （２０）は反転部分（１２）よりも速い速
度で進行するベルト（１７）に引張られて連れ動くこと
はなく、反転部分（１２）が先ず、第１ピグ（１５）を
押し、この第１ピグ（１５）が接着剤（１６）を介して
第２ピグ（２０）を押し進めるようになる。(20) converts the frictional force between the inner surface of the main pipe (2) and the belt (17)
It is set to be larger than the frictional force between the As a result, both pigs (15) and (20) are not pulled and moved by the belt (17) which is moving at a faster speed than the reversing part (12), and the reversing part (12) first moves with the first pig. (15), and this first pig (15) will push the second pig (20) through the adhesive (16).
ところで、（２４）、 （２５）は主管（２）に連通接
続される第１及び第２分岐管であり、第２送風機（２６
）による圧縮空気を、これら分岐管（２４）、 （２５
）に供給可能である。各分岐管（２４）、 （２５）の
送風路（２７）、 （２８）には夫々開閉弁（２９）、
（３０）と圧力計（３１）、 （３２）か設けられて
いるとともに、これら開閉弁（２９）、 （３０）、圧
力計（３１）、 （３２）、第２送風機（２６）および
牽引装置（１８）が制御装置（３３）に連係接続されて
いる。By the way, (24) and (25) are the first and second branch pipes that are connected to the main pipe (2), and are connected to the second blower (26).
), these branch pipes (24), (25
) can be supplied. The air passages (27) and (28) of the branch pipes (24) and (25) each have on-off valves (29),
(30), pressure gauges (31), (32) are provided, as well as these on-off valves (29), (30), pressure gauges (31), (32), a second blower (26) and a traction device. (18) is connected to the control device (33).
制御装置（３３）の作用を説明すると、第２ピグ（２０
）か第１分岐管（２４）の第１開口（３４）を通過する
と第１圧力計（３１）か圧力上昇を検知し、それによっ
て牽引装置（１８）の巻取り速度を遅くし、反転部分（
１２）の進行速度を遅くする。そして、第１開口（３４
）に第１ピグ（１５）か通過すると、第１圧力計（３１
）が再び圧力上昇を検知し、それによって第１開閉弁（
２９）を閉じ操作して第１分岐管（２４）への送風を遮
断するとともに、牽引装置（１８）の巻取り速度を元の
速度に戻す（増速）。To explain the operation of the control device (33), the second pig (20
) passes through the first opening (34) of the first branch pipe (24), the first pressure gauge (31) detects a pressure increase, thereby slowing down the winding speed of the traction device (18) and (
12) Slow down the progress speed. Then, the first opening (34
), when the first pig (15) passes through the first pressure gauge (31
) detects the pressure increase again, which causes the first on-off valve (
29) is closed to cut off the air blowing to the first branch pipe (24), and the winding speed of the traction device (18) is returned to the original speed (increased speed).
次に、第２ピグ（２０）が第２開口（３５）を通過する
と前述と同様に再び牽引装置（１８）が減速され、第１
ピグ（１５）か第２開口（３５）を通過すると第２開閉
弁（３０）か閉じられるとともに、再び牽引装置（１８
）の巻取り速度か元に戻る。この第２分岐管（２５）が
最後の分岐管であるときには、第２開閉弁（３０）の閉
じ操作と同時に第２送風機（２６）を停止するようにし
ておくと良い。Next, when the second pig (20) passes through the second opening (35), the traction device (18) is decelerated again as described above, and the first
When the pig (15) passes through the second opening (35), the second on-off valve (30) is closed and the traction device (18) is closed again.
) winding speed or return to normal. When this second branch pipe (25) is the last branch pipe, it is preferable to stop the second blower (26) at the same time as the closing operation of the second on-off valve (30).
第６図に示すように、ベルト（１７）を省略するととも
に、第１、第２ピグ（１５）、 （２０）間に、これら
両ピグ（１５）、 （２０）を引き寄せる側に付勢する
引張りバネ（３６）を設けても良い。また、引張りゴム
でも良い。As shown in Fig. 6, the belt (17) is omitted and the space between the first and second pigs (15), (20) is biased toward the side that draws these two pigs (15), (20) together. A tension spring (36) may also be provided. Alternatively, tension rubber may be used.
第１、第２ピグ（１５）、 （２０）共に断面円形状と
し、主管（２）内径との嵌め合い公差に差を付けること
により、第１せき止め具（１５）と前記主管（２）内面
（２３）との間の気密度よりも、前記接着剤（Ｉ６）の
前方に配置した第２せき止め具（２０）と前記主管（２
）内面（２３）との間の気密度の方を低く設定しもて良
い。Both the first and second pigs (15) and (20) have a circular cross section, and by making a difference in the fitting tolerance with the inner diameter of the main pipe (2), the first damming device (15) and the inner surface of the main pipe (2) (23), the second dam (20) placed in front of the adhesive (I6) and the main pipe (2
) The airtightness between the inner surface (23) and the inner surface (23) may be set lower.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構成
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面は本発明に係る管の反転ライニング方法の実施例を
示し、第１図はライニングの原理図、第２図はベルトの
断面図、第３図は第２せき止め具の外周形状を示す断面
図、第４図、第５図は夫々反転部分付近か分岐管部位を
通過する状態を示す断面図、第６図は弾性具を装着した
反転部分付近の断面図である。
（２）・・・・・・主管、（５）・・・・・・長尺体、
（１５）、 （２０）・・・・・・せき止め具、（１６
）・・・・・・接着剤、（２３）・・・・・・内面、（
２４）・・・・・・分岐管、（３６）・・・・・・弾性
具。The drawings show an embodiment of the pipe reversal lining method according to the present invention, in which Fig. 1 shows the principle of lining, Fig. 2 is a sectional view of the belt, and Fig. 3 is a sectional view showing the outer peripheral shape of the second dam. , FIG. 4, and FIG. 5 are cross-sectional views showing the vicinity of the reversed portion or passing through the branch pipe portion, respectively, and FIG. 6 is a cross-sectional view of the vicinity of the reversed portion with the elastic device attached. (2)... Main pipe, (5)... Long body,
(15), (20)...Dam stopper, (16
)...Adhesive, (23)...Inner surface, (
24)...Branch pipe, (36)...Elastic tool.
Claims (1)
畳み、その折畳んだ前記長尺体（５）の一端を分岐管（
２４）を連通接続した主管（２）の端部部位に固定した
状態で、前記主管（２）の一端側から前記長尺体（５）
内に加圧流体を供給しながら前記長尺体（５）の内面を
外側に反転させ、反転した前記長尺体（５）の外側面を
接着剤（１６）を介して前記主管（２）内面（２３）に
接着させる管の反転ライニング方法であって、前記主管
（２）内において前記長尺体（５）の前方に接着剤（１
６）を充填した状態で、その接着剤（１６）の前後両側
に一対の接着剤せき止め具（１５）、（２０）を前記主
管（２）内で摺動自在に配置し、前記接着剤（１６）の
後方に配置した第１せき止め具（１５）と前記主管（２
）内面（２３）との間の気密度よりも、前記接着剤（１
６）の前方に配置した第２せき止め具（２０）と前記主
管（２）内面（２３）との間の気密度の方を低く設定し
て、前記長尺体（５）を反転させながら前記両せき止め
具（１５）、（２０）を押し進め、前記分岐管（２４）
内には加圧流体を供給しながらその分岐管（２４）内の
圧力を検知し、前記主管（２）と前記分岐管（２４）と
の接続部に対する前記両せき止め具（１５）、（２０）
の通過を、前記分岐管（２４）内の検出圧力の差で判別
し、前記接続部の前記第１せき止め具（１５）通過判別
に基づいて前記分岐管（２４）内への加圧流体の供給を
停止する管の反転ライニング方法。 ２、前記第１、第２せき止め具（１５）、（２０）間に
、これら両せき止め具（１５）、（２０）を互いに相対
接近する方向に付勢する弾性具（３６）を介在してある
請求項１記載の管の反転ライニング方法。 ３、前記第２せき止め具（２０）が前記主管（２）の前
記分岐管（２４）との接続部位を通過するに伴う前記分
岐管（２４）内の圧力変動の検知に伴って、長尺体（５
）の反転部分の進行速度を減速させる請求項１または２
記載の管の反転ライニング方法。[Claims] 1. Fold a cylindrical elongated body (5) for lining inside a pipe in the radial direction, and connect one end of the folded elongated body (5) to a branch pipe (
24) is fixed to the end portion of the main pipe (2) which is connected in communication with the elongated body (5) from one end side of the main pipe (2).
While supplying pressurized fluid inside the elongated body (5), the inner surface of the elongated body (5) is inverted outward, and the outer surface of the inverted elongated body (5) is attached to the main pipe (2) via an adhesive (16). An inversion lining method for a pipe in which the inner surface (23) is bonded, the adhesive (1) being attached to the front of the elongated body (5) within the main pipe (2).
6), a pair of adhesive dams (15) and (20) are slidably arranged in the main pipe (2) on both sides of the adhesive (16), and the adhesive (16) is filled with the adhesive (6). The first dam (15) placed behind the main pipe (16) and the main pipe (2
) The adhesive (1) is more airtight than the inner surface (23).
The airtightness between the second dam (20) disposed in front of the main pipe (2) and the inner surface (23) of the main pipe (2) is set to be lower, and while the elongated body (5) is inverted, Push both the dams (15) and (20) forward, and open the branch pipe (24).
The pressure inside the branch pipe (24) is detected while supplying pressurized fluid therein, and both the dam stoppers (15) and (20 )
The passage of the pressurized fluid into the branch pipe (24) is determined based on the difference in the detected pressure within the branch pipe (24), and the passage of the pressurized fluid into the branch pipe (24) is determined based on the determination that the first dam (15) has passed through the connection part. Inversion lining method of pipes to stop supply. 2. An elastic device (36) is interposed between the first and second dam stoppers (15) and (20) to bias both of the dam stop tools (15) and (20) toward each other. 2. A method of inversion lining a pipe according to claim 1. 3. As the second damming device (20) passes through the connecting portion of the main pipe (2) with the branch pipe (24), a pressure fluctuation within the branch pipe (24) is detected. Body (5
Claim 1 or 2 wherein the advancing speed of the reversing portion of ) is reduced.
Method of inversion lining of tubes as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28998090A JPH04161325A (en) | 1990-10-25 | 1990-10-25 | Reverse lining method for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28998090A JPH04161325A (en) | 1990-10-25 | 1990-10-25 | Reverse lining method for pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04161325A true JPH04161325A (en) | 1992-06-04 |
Family
ID=17750222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28998090A Pending JPH04161325A (en) | 1990-10-25 | 1990-10-25 | Reverse lining method for pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04161325A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0761417A2 (en) * | 1995-09-06 | 1997-03-12 | Tokyo Gas Co., Ltd. | A method of repairing a pipe |
| JP2003533385A (en) * | 2000-05-16 | 2003-11-11 | ソード・テクノロジーズ・リミテッド | Apparatus and method for lining a passage |
| EP1534989A1 (en) * | 2002-09-02 | 2005-06-01 | Shieldliner Co. Limited | Apparatus for and method of lining conduits |
| US9501857B2 (en) | 2013-05-09 | 2016-11-22 | Ricoh Company, Limited | Display control method configured to cause an input image to emerge and move on a display region, display control device, and display system configured to perform same |
-
1990
- 1990-10-25 JP JP28998090A patent/JPH04161325A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0761417A2 (en) * | 1995-09-06 | 1997-03-12 | Tokyo Gas Co., Ltd. | A method of repairing a pipe |
| EP0761417A3 (en) * | 1995-09-06 | 1998-01-07 | Tokyo Gas Co., Ltd. | A method of repairing a pipe |
| US5855712A (en) * | 1995-09-06 | 1999-01-05 | Tokyo Gas Co. Ltd. | Method of repairing an existing pipe |
| JP2003533385A (en) * | 2000-05-16 | 2003-11-11 | ソード・テクノロジーズ・リミテッド | Apparatus and method for lining a passage |
| EP1534989A1 (en) * | 2002-09-02 | 2005-06-01 | Shieldliner Co. Limited | Apparatus for and method of lining conduits |
| EP1534989A4 (en) * | 2002-09-02 | 2007-01-17 | Shieldliner Co Ltd | Apparatus for and method of lining conduits |
| US9501857B2 (en) | 2013-05-09 | 2016-11-22 | Ricoh Company, Limited | Display control method configured to cause an input image to emerge and move on a display region, display control device, and display system configured to perform same |
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