JP3081349B2 - Lining method in pipe - Google Patents
Lining method in pipeInfo
- Publication number
- JP3081349B2 JP3081349B2 JP04067790A JP6779092A JP3081349B2 JP 3081349 B2 JP3081349 B2 JP 3081349B2 JP 04067790 A JP04067790 A JP 04067790A JP 6779092 A JP6779092 A JP 6779092A JP 3081349 B2 JP3081349 B2 JP 3081349B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- lining
- pig
- lining material
- pressurized gas
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、管内のライニング方法
に関し、詳しくは、管内にライニング材を投入し、前記
ライニング材のライニング方向上手側にピグを内嵌し、
前記ピグのライニング方向上手側から前記管内に加圧ガ
スを供給して前記ピグを前記管内のライニング方向下手
側に前進させることにより、管内面に前記ライニング材
を塗装する管内のライニング方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining method in a pipe, and more particularly, a lining material is put into a pipe, and a pig is fitted inside the lining material on a side in a lining direction.
The present invention relates to a lining method in a pipe, in which a pressurized gas is supplied into the pipe from the upper side in the lining direction of the pig to advance the pig to the lower side in the lining direction in the pipe, so that the lining material is coated on the inner surface of the pipe.
【０００２】[0002]
【従来の技術】従来、上記の如き管内のライニング方法
は、前記ピグのライニング方向上手側からのみ加圧ガス
をライニング全工程にわたって、供給し続けることで管
内面をライニングしていた。2. Description of the Related Art Conventionally, in the lining method in a pipe as described above, the inner surface of the pipe is lined by continuously supplying a pressurized gas only from the upper side in the lining direction of the pig throughout the lining process.
【０００３】[0003]
【発明が解決しようとする課題】しかし、管周壁に漏洩
部が存在する場合、ライニングしながら前進してくるピ
グがその漏洩部をすぎてしまうと、前記ピグを前進させ
ていた加圧ガスが前記漏洩部から管外方に吹き抜けてし
まう虞があった。そうなると、前記漏洩部を閉塞できな
いと共に、漏洩部よりライニング方向下手側の管内面を
ライニングできなくなることや、前記ピグが管内にとり
残されてしまい、容易には管内から取り出せない不具合
があった。However, if a leaking portion exists on the pipe peripheral wall and the pig advancing while lining passes the leaking portion, the pressurized gas which has advanced the pig will be displaced. There is a possibility that the air leaks out of the pipe from the leakage part. In this case, the leaked portion cannot be closed, and the inner surface of the pipe on the lower side in the lining direction from the leaked portion cannot be lined, or the pig remains in the pipe and cannot be easily removed from the pipe.
【０００４】本発明は、上記実情に鑑み成したもので、
管周壁に漏洩部が存在する場合であっても、前記漏洩部
を閉塞した状態にライニングして、全域の管内面をライ
ニングできる管内のライニング方法を提供することを目
的とする。[0004] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a lining method in a pipe that can line the entire inner surface of a pipe by lining the leaked part in a closed state even when a leaked part is present on a pipe peripheral wall.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
の本発明の特徴手段は、管周壁の漏洩部にライニング材
がさしかかった時に、ピグのライニング方向下手側から
加圧ガスを前記管内に供給して、前記ピグのライニング
方向上手側からの加圧ガスと前記ライニング材のライニ
ング方向下手側から前記管内への供給加圧ガスによって
前記漏洩部から前記管外方に前記ライニング材をしみだ
させ、その後、前記ピグのライニング方向上手側への加
圧ガスの供給を停止すると共に、前記管内における前記
ピグのライニング方向上手側の圧よりも前記ライニング
のライニング方向下手側の圧を小さくして、前記ピグを
ライニング方向下手側に吸引しながら前記ライニング材
を前記管内面に塗装する点にある。A feature of the present invention to achieve the above object is that when a lining material approaches a leaking portion of a pipe peripheral wall, pressurized gas is introduced into the pipe from a lower side in the lining direction of the pig. Supplying, the pressurized gas from the upper side in the lining direction of the pig and the pressurized gas supplied to the inside of the pipe from the lower side in the lining direction of the lining material soak the lining material from the leakage portion to the outside of the pipe. Then, the supply of pressurized gas to the lining direction upper side of the pig is stopped, and the pressure of the lining direction lower side of the lining is made smaller than the pressure of the pig lining direction upper side in the pipe. The lining material is coated on the inner surface of the pipe while sucking the pig downward in the lining direction.
【０００６】[0006]
【作用】管周壁の漏洩部にさしかかっているライニング
材は、ライニング方向下手側から供給した加圧ガスと、
ライニング方向上手側から供給された加圧ガスによって
ライニング方向下手側に向けて押圧されているピグとに
より、両側から圧縮されて、前記漏洩部から管外方へし
みだす。その後、前記ライニング材のライニング方向下
手側の圧を前記ピグのライニング方向上手側の圧よりも
小さくすることによって、前記漏洩部の外方に滞留して
いるライニング材は引き戻され、前記漏洩部が確実に閉
塞されると共に、前記ピグがライニング方向下手側に吸
引移動し、ライニング材を管内面に塗装する。また、前
記ピグが前記漏洩部をすぎた後は、前記ピグのライニン
グ材方向上手側の管内への加圧ガスの供給を停止してい
るから、前記閉塞した漏洩部が再び開口することはな
い。[Function] The lining material that is approaching the leaking part of the pipe peripheral wall is pressurized gas supplied from the lower side in the lining direction,
The pig is pressed from the both sides by the pig pressed toward the lower side in the lining direction by the pressurized gas supplied from the upper side in the lining direction, and exudes from the leaking part to the outside of the pipe. Thereafter, by making the pressure on the lower side in the lining direction of the lining material smaller than the pressure on the upper side in the lining direction of the pig, the lining material staying outside the leakage portion is pulled back, and the leakage portion is removed. The pig is surely closed, and the pig is sucked and moved to the lower side in the lining direction to coat the lining material on the inner surface of the pipe. Further, after the pig has passed the leakage part, the supply of the pressurized gas into the pipe on the upper side in the lining material direction of the pig is stopped, so that the closed leakage part does not open again. .
【０００７】[0007]
【発明の効果】従って、管周壁に漏洩部が存在する場合
でも簡単な加圧ガスの供給制御及び圧力調節のみで、漏
洩部を閉塞した状態にライニング材を塗装でき、漏洩部
よりライニング方向下手側の管内面をもライニング材で
塗装できた。Therefore, even when a leak is present on the pipe peripheral wall, the lining material can be painted in a state where the leak is closed by only simple pressurized gas supply control and pressure adjustment. The inner surface of the tube on the side was also painted with the lining material.
【０００８】[0008]
【実施例】以下、本発明の管内のライニング方法の一実
施例を図面に基づいて説明する。図１に示すように、内
面にライニング材を塗装しようとする管２は、管２周壁
に漏洩部となる腐食孔３ができている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for lining a pipe according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, a pipe 2 on which an inner surface is to be coated with a lining material has a corrosion hole 3 serving as a leak portion on a peripheral wall of the pipe 2.
【０００９】管２内面にライニング材１を塗装するため
に、先ずライニング材１（例えば主剤と硬化剤とからな
るエポキシ樹脂）、管２の内径よりも小さな外径の球状
を呈したピグ４、及び、管２内の圧を調節自在とする２
個のポンプ５，６を用意してある。In order to coat the lining material 1 on the inner surface of the tube 2, first, the lining material 1 (for example, an epoxy resin comprising a main agent and a curing agent), a pig 4 having a spherical shape having an outer diameter smaller than the inner diameter of the tube 2, And 2 which makes the pressure in the pipe 2 adjustable.
The pumps 5 and 6 are prepared.
【００１０】前記２個のポンプ５，６のうち一方のもの
（以下第一ポンプと称する）は、管２の両端部７，８の
うちライニング材１を塗装し始める側の部分７（以下、
第一端部と称する）に連通接続してあり、加圧ガスを第
一端部７から管２内に自在に送り込めるようにしてあ
り、他方のもの６（以下、第二ポンプと称する）は、前
記第一端部７とは反対側の管端部８（以下、第二端部と
称する）に連通連結してあり、管２内のガスを第二端部
８から吸引自在に排気できるようにしてあると共に、上
述と同様加圧ガスを管２内に送り込めるようになってい
る。One of the two pumps 5 and 6 (hereinafter referred to as a first pump) is a portion 7 (hereinafter referred to as a first pump) of both ends 7 and 8 of the pipe 2 on which the lining material 1 is to be coated.
The other end 6 (hereinafter referred to as a second pump) is connected to the first end 7 so that the pressurized gas can be freely sent from the first end 7 into the pipe 2. Is connected to a pipe end 8 (hereinafter, referred to as a second end) opposite to the first end 7 so that gas in the pipe 2 can be evacuated from the second end 8 so as to be freely sucked. In addition to this, the pressurized gas can be sent into the pipe 2 as described above.
【００１１】管２内面にライニング材１を塗装するに
は、図１の（イ）に示すように、管２内にライニング材
１を投入し、ライニング材１のライニング方向上手側に
ピグ４を内嵌し、第一ポンプ５を操作して、ピグ４のラ
イニング方向上手側となる第一端部７から管２内に加圧
ガスを供給してピグ４を管２内のライニング方向下手側
に前進させる。そうすることで、管２内面にライニング
材１を塗装する。管２周壁の腐食孔３にライニング材１
がさしかかった時に、第二ポンプ６を操作して、ライニ
ング材１のライニング方向下手側となる第二端部８から
加圧ガスを供給する。そうすることで、腐食孔３から管
２外方にライニング材１をしみださせ、その後、図１の
（ロ）に示すように、第一ポンプ５を停止して第一端部
７から管２内への加圧ガスの供給を停止すると共に、第
二ポンプ６を切換え操作して第二端部８から管２内のガ
スを吸引する。そうすることでピグ４をライニング方向
下手側に吸引しながらライニング材１を管２内面に塗装
していく。To coat the lining material 1 on the inner surface of the pipe 2, as shown in FIG. 1A, the lining material 1 is put into the pipe 2, and the pig 4 is placed on the upper side of the lining material 1 in the lining direction. The inside is fitted, the first pump 5 is operated, and pressurized gas is supplied into the pipe 2 from the first end 7, which is on the upper side in the lining direction of the pig 4, so that the pig 4 is located on the lower side in the lining direction in the pipe 2. To move forward. By doing so, the lining material 1 is coated on the inner surface of the pipe 2. Lining material 1 in corrosion hole 3 in pipe 2 peripheral wall
When approaching, the second pump 6 is operated to supply a pressurized gas from the second end 8 on the lower side of the lining material 1 in the lining direction. By doing so, the lining material 1 is extruded from the corrosion hole 3 to the outside of the pipe 2, and thereafter, as shown in FIG. The supply of the pressurized gas into the tube 2 is stopped, and the gas in the tube 2 is sucked from the second end 8 by switching the second pump 6. By doing so, the lining material 1 is painted on the inner surface of the pipe 2 while sucking the pig 4 downward in the lining direction.
【００１２】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、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。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.
【図１】ピグを管内に前進させてライニングしている管
の縦断面図FIG. 1 is a longitudinal sectional view of a pipe lined by advancing a pig into the pipe.
【符号の説明】 １ ライニング材 ２ 管 ３ 漏洩部 ４ ピグ[Description of Signs] 1 Lining material 2 Tube 3 Leakage part 4 Pig
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−63176（ＪＰ，Ａ) 特開 昭61−103587（ＪＰ，Ａ) 特開 平２−174978（ＪＰ，Ａ) 特開 昭63−267481（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B05D 1/00 - 7/26 F16L 55/16 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-63176 (JP, A) JP-A-61-103587 (JP, A) JP-A-2-174978 (JP, A) JP-A-63-63 267481 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B05D 1/00-7/26 F16L 55/16
Claims (1)
し、前記ライニング材（１）のライニング方向上手側に
ピグ（４）を内嵌し、前記ピグ（４）のライニング方向
上手側から前記管（２）内に加圧ガスを供給して前記ピ
グ（４）を前記管（２）内のライニング方向下手側に前
進させることにより、管（２）内面に前記ライニング材
（１）を塗装する管内のライニング方法であって、 前記管（２）周壁の漏洩部（３）に前記ライニング材
（１）がさしかかった時に、前記ピグ（４）のライニン
グ方向下手側から加圧ガスを前記管（２）内に供給し
て、前記ピグ（４）のライニング方向上手側からの加圧
ガスと前記ライニング材（１）のライニング方向下手側
から前記管（２）内への供給加圧ガスによって前記漏洩
部（３）から前記管（２）外方に前記ライニング材
（１）をしみださせ、その後、前記ピグ（４）のライニ
ング方向上手側への加圧ガスの供給を停止すると共に、
前記管（２）内における前記ピグ（４）のライニング方
向上手側の圧よりも前記ライニング材（１）のライニン
グ方向下手側の圧を小さくして、前記ピグ（４）をライ
ニング方向下手側に吸引しながら前記ライニング材
（１）を前記管（２）内面に塗装する管内のライニング
方法。1. A lining material (1) is introduced into a pipe (2), a pig (4) is fitted inside the lining material (1) in the lining direction, and the pig (4) is slid in the lining direction. By supplying a pressurized gas into the pipe (2) from the side to advance the pig (4) in the lining direction lower side in the pipe (2), the lining material (1) is provided on the inner surface of the pipe (2). ), Wherein when the lining material (1) approaches the leaking portion (3) of the peripheral wall of the pipe (2), the pressurized gas is applied from the lower side in the lining direction of the pig (4). Is supplied into the pipe (2), and the pressurized gas from the upper side in the lining direction of the pig (4) and the supply gas into the pipe (2) from the lower side in the lining direction of the lining material (1) are supplied. Pressurized gas from the leak (3) to the pipe (2) The allowed Dasa stain lining material (1) towards and thereafter stops the supply of pressurized gas to the lining direction upstream side of the pig (4),
By making the pressure of the lining material (1) lower in the lining direction lower than the pressure of the pig (4) in the lining direction upper side in the pipe (2), the pig (4) is moved to the lower side in the lining direction. A lining method in a pipe, wherein the lining material (1) is coated on the inner surface of the pipe (2) while sucking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04067790A JP3081349B2 (en) | 1992-03-26 | 1992-03-26 | Lining method in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04067790A JP3081349B2 (en) | 1992-03-26 | 1992-03-26 | Lining method in pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05269435A JPH05269435A (en) | 1993-10-19 |
| JP3081349B2 true JP3081349B2 (en) | 2000-08-28 |
Family
ID=13355104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04067790A Expired - Fee Related JP3081349B2 (en) | 1992-03-26 | 1992-03-26 | Lining method in pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3081349B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4557444B2 (en) * | 2001-01-12 | 2010-10-06 | 有信株式会社 | Receiving device that also functions as a supply unit |
| JP5658583B2 (en) * | 2011-01-31 | 2015-01-28 | 大阪瓦斯株式会社 | In-pipe pig moving device, and in-pipe residual gas exhausting method, in-pipe inspection method, in-pipe inner lining method, in-pipe cleaning method, and in-pipe line using the in-pipe pig moving device Method |
-
1992
- 1992-03-26 JP JP04067790A patent/JP3081349B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05269435A (en) | 1993-10-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |