JPS61149276A - Method for lining inner surface of pipeline - Google Patents
Method for lining inner surface of pipelineInfo
- Publication number
- JPS61149276A JPS61149276A JP27120984A JP27120984A JPS61149276A JP S61149276 A JPS61149276 A JP S61149276A JP 27120984 A JP27120984 A JP 27120984A JP 27120984 A JP27120984 A JP 27120984A JP S61149276 A JPS61149276 A JP S61149276A
- Authority
- JP
- Japan
- Prior art keywords
- balloon
- pig
- pipeline
- pipe
- coating material
- 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
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は管路内面のライニング工法に関する。[Detailed description of the invention] Industrial applications The present invention relates to a method for lining the inner surface of a pipe.
従来の技術
従来管路内面のライニング工法として、ピグの管路円移
動につれ、管路内充填の塗材を押動しつつ管路内面に塗
布して行く、ピグ利用のライニング工法が提案されてい
る。Conventional technology As a conventional method for lining the inner surface of a pipe, a lining method using a pig has been proposed, in which the coating material filled inside the pipe is pushed and applied to the inner surface of the pipe as the pig moves in a circle around the pipe. There is.
発明が解決しようとする問題点
ところがピグ利用のライニング工法に於ては、例えば都
市ガスの室内配管のように、ガス本管側と室内取出口側
とアロ径を異にするような管路に轡用すると、ピグが管
路の小口径部分で詰ってしまい、適用範囲が実質的に口
径一定の管路に制限される不利ダあった。またピグを各
種口径ごとに準備しなければならず、不便である。Problems to be Solved by the Invention However, in the lining construction method using pigs, for example, in indoor pipes for city gas, pipes where the gas main side and the indoor outlet side have different diameters. If used repeatedly, the pig would become clogged in the small diameter portion of the pipeline, and the scope of application was disadvantageously limited to pipelines with a substantially constant diameter. Furthermore, it is inconvenient that pigs must be prepared for each caliber.
本発明はこのような従来の問題点を一掃することを呼的
としてなされたものである。The present invention has been made with the aim of eliminating such conventional problems.
本発明は、管路円移動のピグでもって、管路内充填の塗
材を押動しつつ、管路内面に塗布する形式のライニング
工法に於て、ピグとしてゴム風船を用いることを特徴と
する管路内面のライニング工法に係る。The present invention is characterized in that a rubber balloon is used as the pig in a lining method in which the coating material filled in the pipe is pushed and applied to the inner surface of the pipe using a pig that moves in a circle around the pipe. This relates to the method of lining the inner surface of pipelines.
作 用
本発明ライニング工法に於ては、ピグとしてゴム風船を
用いているので、風船ピグが管路内移動時に管路の口径
の大小に応じ管軸方向に自由に伸縮度形して径を増減し
、而して口径が一定の管路はもとより、一定でない管路
に対してでも、管路内を自由に移動できる。また管路内
の移動中に於ては、風船ビグに管路内充填の塗材の抵抗
がかかり、風船ピグは、この抵抗との平衡状態まで管軸
方向に伸長され径を減じるので、管路内面との間に周隙
が発生し、この周隙をして、従来ビグと同様に管路内面
に塗材を塗布して行くことができる。Function: In the lining method of the present invention, a rubber balloon is used as a pig, so when the balloon pig moves inside the pipe, it can freely expand and contract in the pipe axis direction depending on the diameter of the pipe. It increases and decreases, and can move freely within the conduit, not only in conduits with a constant diameter, but also in conduits with variable diameters. In addition, while moving in the pipe, the balloon pig is subjected to resistance from the coating material filling the pipe, and the balloon pig stretches in the pipe axis direction until it reaches a state of equilibrium with this resistance, reducing its diameter. A circumferential gap is created between the inner surface of the pipe and the inner surface of the pipe, and the coating material can be applied to the inner surface of the pipe using this circumferential gap in the same manner as in the conventional VIG.
このように本発明工法に於ては、風船ピグの使用により
、口径か一定又は一定でない管路に対し、管路内目詰り
などのトラブル発生なしに内面ライニング施工できる。As described above, in the construction method of the present invention, by using a balloon pig, inner lining can be carried out on pipes whose diameters are constant or non-uniform, without causing troubles such as clogging in the pipes.
実施例
以下に本発明工法の実施例を添附図面にもとづき説明す
ると次の通りである。EXAMPLES Below, examples of the construction method of the present invention will be explained based on the attached drawings.
本発明工法の実施に用いられる風船ピグ（１）は、ゴム
風船を所定の内圧を持つように膨らませたものであり、
管軸と直交する方向の断面は真円で、通常管路（ａ）の
大径部（ａｌ）の口径より、直径で５〜３０チ程度、径
の大きいものが用いられる。ビグｔ１１は真円球及び長
円球（楕円球を含）のいずれであってもよい。The balloon pig (1) used in the implementation of the construction method of the present invention is a rubber balloon inflated to a predetermined internal pressure.
The cross section in the direction perpendicular to the tube axis is a perfect circle, and the diameter is usually about 5 to 30 inches larger than the diameter of the large diameter portion (al) of the tube (a). The big t11 may be either a perfect round sphere or an elliptical sphere (including an elliptical sphere).
風船ピグＩｌｌは、裡で用いると管路（ａ）内の移動時
に、継手部の管エツジなどに直接接触して破損する虞れ
があるので、図示のようにこれを多少長目の袋状保護ネ
ット（２）内にフリーに従って管軸方向に自由に伸縮変
形し得るように収納して使用することが好ましい。この
ような保護ネット（２）としては、例えばミカンなどの
包・装材として周知の、管軸方向に実質的に非伸縮性に
して、半径方向に伸縮自在な袋ネットを有利に用い得る
。第１図に示すように、ロープ（３）の牽引操作をして
風船ピグｔｌ）を管路円移動するときは、ロープ（３）
に保護ネット（２）を直結し、ネット（２）内に風船ピ
グｆｉｌをロープ（３）からフリーに収納することが好
ましい。If the balloon pig Ill is used inside the pipe, there is a risk that it will come into direct contact with the pipe edge of the joint and be damaged when it is moved inside the pipe (a), so it should be shaped into a slightly longer bag as shown in the figure. It is preferable to use the tube by storing it in a protective net (2) so that it can freely expand and contract in the axial direction of the tube. As such a protective net (2), for example, a bag net that is substantially non-stretchable in the tube axis direction and stretchable in the radial direction, which is well known as a packaging material for oranges, etc., can be advantageously used. As shown in Fig. 1, when moving the balloon pig (tl) in the pipe circle by pulling the rope (3),
It is preferable to directly connect a protective net (2) to the net (2) and store the balloon pig fil free from the rope (3) within the net (2).
第１図に示すように、管路（ａ）内填装の風船ピグ＋１
．）をロープ（３）操作をして管路大径部（ａｌ）内を
移動すると、この風船ピグ（１）の移動につれ、管路内
充填の塗材（４）（例えば２液性硬化樹脂塗料）も移動
し、この時風船ビグｍは塗材（４）の抵抗を受けて当該
抵抗と平衡状−となるまで伸長し径を減じ、管路大径部
（ａｌ）との間に周隙（６）を生じ、よって塗材（４）
は従来ビグと同様にこの周隙（５）を通じ、管路大径部
（ａｌ）内面に塗布され、塗膜（６）が形成されて行く
。As shown in Figure 1, the balloon pig +1 loaded inside the pipe (a)
．． ) is moved inside the large diameter section (al) of the pipe by manipulating the rope (3), and as the balloon pig (1) moves, the coating material (4) (for example, two-component hardened resin) filled inside the pipe moves. At this time, the balloon Big m receives the resistance of the coating material (4) and expands until it is in equilibrium with the resistance, reducing its diameter, and the circumferential surface is formed between it and the large diameter part of the pipe (al). A gap (6) is created, and therefore the coating material (4)
is applied to the inner surface of the large-diameter portion (al) of the pipe through this gap (5), forming a coating film (6), similar to the conventional VIG.
周隙（６）の開口巾ひいては塗膜（６）の厚みは、風船
ピグ（１）の内圧、移動速度、その他塗材（４）の粘度
、充填量などの影春を受け、例えば塗材（４）の粘度及
び充填量を一定とした場合は、風船ピグｆ１＋の内圧及
び移動速度を適宜選択することにより所望の厚みが得ら
れる。また塗材の充填量はライニング施工の進行にとも
ない漸次減少し、従って塗膜（６）の膜厚も減少傾向と
なるがこのような場合は、例えば風船ピグｉｌｌの移動
速度を塗材充填量の減少にともない速めて膜厚増加傾向
となし相殺すればよい。The opening width of the gap (6) and thus the thickness of the coating film (6) are influenced by the internal pressure of the balloon pig (1), the moving speed, the viscosity of the coating material (4), the amount of filling, etc. When the viscosity and filling amount in (4) are constant, a desired thickness can be obtained by appropriately selecting the internal pressure and moving speed of the balloon pig f1+. In addition, the amount of filling material will gradually decrease as the lining construction progresses, and the thickness of the coating film (6) will also tend to decrease. It is only necessary to offset the tendency for the film thickness to increase as the film thickness decreases.
風船ピグ（１）の内圧は、一般的にいって、これがあま
りに小さいと、塗膜の膜厚が不当に大きくなり、またあ
まりに大きいと膜厚が不当に小さくなり、いずれも実質
的に内面ライニング施工ができなくなるので、管路円移
動速度、管路内充填塗料の粘度及び充填量などにも左右
されるが、通常は０、０５〜０．５ Ｋｇ／ｃｍ （ゲ
ージ圧）の範囲内から施工条件などに合せて適宜決定さ
れる。Generally speaking, if the internal pressure of the balloon pig (1) is too small, the film thickness of the coating film will be unduly large, and if it is too large, the film thickness will be unduly small, both of which will substantially damage the inner lining. Although it depends on the pipe circular movement speed, viscosity and filling amount of the paint filled in the pipe, etc., it is usually within the range of 0.05 to 0.5 Kg/cm (gauge pressure). It will be determined as appropriate depending on the construction conditions, etc.
また管路円移動速度は、作業能率等を考慮し、３〜ｂ
第２図は管路（ａ）の中径部（ａ２）内を移動しつつあ
る風船ピグ（１）の状態を示している。この場合は、風
船ピグ（１）の伸長度が、大径部（ａｌ）円移動中より
も僅かに大きくなるが、それ以外は大径部（ａｌ）移動
中と実質的に変らず、大径部（ａｌ）に引続き、中径部
（ａ２）も内面ライニングできる。ただ中径部（ａ２）
内の移動中は、風船ピグｆ１＋の伸長度が大きくなるの
で、内圧が上昇し、この内圧上昇は、風船ピグｆ１１の
塗材（４）に対する抵抗力を増し、塗材抵抗による風船
ピグ（１）の伸長度を抑え、その結果周隙（５）の開口
巾ひいては塗膜（６）の膜厚を減少させることになる。In addition, the moving speed of the pipe circle is determined by considering work efficiency, etc., and Figure 2 shows the state of the balloon pig (1) moving inside the middle diameter part (a2) of the pipe (a). There is. In this case, the degree of expansion of the balloon pig (1) is slightly greater than when the large diameter part (al) is moving in a circle, but other than that, it is essentially the same as when the large diameter part (al) is moving in a circle. Following the diameter part (al), the middle diameter part (a2) can also be lined internally. Just the middle diameter part (a2)
While the balloon pig f1+ is moving inside, the degree of expansion of the balloon pig f1+ increases, so the internal pressure increases. This increase in internal pressure increases the resistance force of the balloon pig f11 against the coating material (4), and the resistance of the balloon pig (1) due to the coating material resistance increases. ), and as a result, the opening width of the gap (5) and the thickness of the coating film (6) are reduced.
このような膜厚減少は極く僅かで、実質的に悪影暢はな
いが、できれば解消することが好ましい。本発明では、
このような目的のために、例えば第３図に示すように、
牽引ロープを兼ねるホース（７）をして、風船ゴムｆ１
）内を、管路外設置のエアタンク（８）内に連通してお
き、エアタンク（８）をして風船ゴムｆｌの内圧変化を
補正吸収し、緩和することができる。Although such a decrease in film thickness is extremely slight and has virtually no adverse effects, it is preferable to eliminate it if possible. In the present invention,
For this purpose, for example, as shown in Figure 3,
Use the hose (7) that also serves as a tow rope, and attach the balloon rubber f1
) is communicated with an air tank (8) installed outside the pipeline, so that the air tank (8) can compensate for and absorb changes in the internal pressure of the balloon fl to alleviate it.
本発明に於ては、第４図に示すように、風船ピグｉｌ）
の管路円移動手段として、圧縮エアを利用してもよい。In the present invention, as shown in FIG.
Compressed air may be used as the pipe circular moving means.
第４図に於て、（９）はコンプレッサーである。In FIG. 4, (9) is a compressor.
風船ピグ（＋ｌは第５図に示すように、複数個を連結し
て用いてもよく、この場合、風船ピグｆｌ）の内圧は、
後続のもの程僅かに高くなるよう設定することが好まし
い。As shown in FIG. 5, a plurality of balloon pigs (+l may be connected and used; in this case, the internal pressure of the balloon pig fl) is
It is preferable to set it so that the subsequent ones become slightly higher.
第６図に示すように、管路（ａ）内充填の塗材（４）を
、予めエアブロ−によって分散しておくことにより、管
路（ａ）円移動操作時に於ける風船ピグｆｌ）への抵抗
を減少することができる。As shown in Fig. 6, by dispersing the coating material (4) filled in the pipe (a) by air blowing in advance, the coating material (4) filled in the pipe (a) is distributed to the balloon pig (fl) during the circular movement operation of the pipe (a). resistance can be reduced.
風船ピグｆ１１の管路屈曲部（ａ）′の通過性をよくす
るために、第７図に示すように牽引ロープ（３）に、風
船ピグ（１１に近接してガイドボール（１０）を備える
ことができ、ガイドボール（ｌＯ）を複数連設するとき
は、牽引方向に対し、前側のもの程径を小さくして詔く
ことが好ましい。In order to improve the passage of the balloon pig f11 through the conduit bent part (a)', the tow rope (3) is provided with a guide ball (10) close to the balloon pig (11) as shown in FIG. When a plurality of guide balls (lO) are arranged in a row, it is preferable that the diameter of the guide ball is made smaller toward the front with respect to the pulling direction.
効 果
本発明に於てはビグ利用の管路内面ライニング工法に於
て、ビグとして特に風船ピグを用いたので、従来施工が
困難とされていた都市ガスの室内配管のように口径が一
定でない管路に対してでも支障なく内面ライニングを実
施でき、ピグ利用の＝７−
内面ライニング工法の適用範囲を拡大できる特徴を有す
る。Effects In the present invention, in the pipe inner lining construction method using bigs, balloon pigs are especially used as bigs, so the diameter is not constant like indoor pipes for city gas, which were conventionally considered difficult to install. It has the feature that inner lining can be carried out without any problems even on pipelines, and the range of application of the =7- inner lining method using pigs can be expanded.
また風船ピグの膨張度によって径を適宜変更できるので
、異径管に対し都合よく適用でき便利である。In addition, since the diameter can be changed appropriately depending on the degree of expansion of the balloon pig, it is convenient and can be conveniently applied to pipes of different diameters.
第１図は本発明工法の一実施状況を示す縦断面図、第２
図は管路の中径部を移動しつつある風船ピグの状況を示
す縦断面図、第３図及び第４図は本発明工法の他の実施
状況を示す縦断面図、第５図は風船ピグの連結使用状況
を示す縦断面図、第６図は管路内充填塗材のエアーブロ
ーによる分散状況を示す縦゛断面図、第７図は、風船ピ
グの管路屈曲部の通過状況を示す縦断面図である。
図に於て、（１）は風船ピグ、（２）は袋状保護ネット
、（３）はロープ、（４）は塗材、＋５１は周隙、（６
）は塗膜、（７）はホース、（８）はエアタンク、（３
）はコンプレッサーである。
〔以上〕＝８−
特開昭Ｇｌ−１４９２７６（４）
第７図Figure 1 is a vertical cross-sectional view showing the implementation status of the construction method of the present invention, Figure 2
The figure is a vertical cross-sectional view showing the situation of the balloon pig moving in the middle diameter part of the pipe, Figures 3 and 4 are vertical cross-sectional views showing other implementation conditions of the construction method of the present invention, and Figure 5 is the balloon pig. Figure 6 is a vertical cross-sectional view showing how the pigs are connected and used, Figure 6 is a vertical cross-sectional view showing how the coating material inside the pipe is dispersed by air blowing, and Figure 7 is a vertical cross-sectional view showing how the balloon pig passes through the bent part of the pipe. FIG. In the figure, (1) is a balloon pig, (2) is a bag-like protective net, (3) is a rope, (4) is a coating material, +51 is a gap, (6
) is the paint film, (7) is the hose, (8) is the air tank, (3
) is a compressor.
[More than]=8- JP-A-Sho Gl-149276 (4) Figure 7
Claims (1)
押動しつつ、管路内面に塗布する形式のライニング工法
に於て、ピグとしてゴム風船を用いることを特徴とする
管路内面のライニング工法。(1) A lining method in which the pig moves inside the pipe and applies the coating material to the inner surface of the pipe while pushing the coating material, which is characterized by using a rubber balloon as the pig. Lining method for the inner surface of pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27120984A JPS61149276A (en) | 1984-12-21 | 1984-12-21 | Method for lining inner surface of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27120984A JPS61149276A (en) | 1984-12-21 | 1984-12-21 | Method for lining inner surface of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61149276A true JPS61149276A (en) | 1986-07-07 |
Family
ID=17496867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27120984A Pending JPS61149276A (en) | 1984-12-21 | 1984-12-21 | Method for lining inner surface of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61149276A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01255419A (en) * | 1988-04-04 | 1989-10-12 | Nippon Telegr & Teleph Corp <Ntt> | Repair work for underground conduit line |
| JP2007152186A (en) * | 2005-12-02 | 2007-06-21 | Tsumarinuki 24:Kk | Lining method of drain pipe pipe and lining accessory used for the method |
| JP2016203441A (en) * | 2015-04-20 | 2016-12-08 | 東芝プラントシステム株式会社 | Lining device and lining method of tubular body inner surface |
| CN114768153A (en) * | 2022-05-13 | 2022-07-22 | 福建闽山消防有限公司 | Automatic water spraying fire extinguishing system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5926172A (en) * | 1982-07-31 | 1984-02-10 | Taada:Kk | Application of anticorrosive agent onto inner surface of piping |
-
1984
- 1984-12-21 JP JP27120984A patent/JPS61149276A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5926172A (en) * | 1982-07-31 | 1984-02-10 | Taada:Kk | Application of anticorrosive agent onto inner surface of piping |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01255419A (en) * | 1988-04-04 | 1989-10-12 | Nippon Telegr & Teleph Corp <Ntt> | Repair work for underground conduit line |
| JP2007152186A (en) * | 2005-12-02 | 2007-06-21 | Tsumarinuki 24:Kk | Lining method of drain pipe pipe and lining accessory used for the method |
| JP2016203441A (en) * | 2015-04-20 | 2016-12-08 | 東芝プラントシステム株式会社 | Lining device and lining method of tubular body inner surface |
| CN114768153A (en) * | 2022-05-13 | 2022-07-22 | 福建闽山消防有限公司 | Automatic water spraying fire extinguishing system |
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