JPH0257997B2 - - Google Patents
Info
- Publication number
- JPH0257997B2 JPH0257997B2 JP26896387A JP26896387A JPH0257997B2 JP H0257997 B2 JPH0257997 B2 JP H0257997B2 JP 26896387 A JP26896387 A JP 26896387A JP 26896387 A JP26896387 A JP 26896387A JP H0257997 B2 JPH0257997 B2 JP H0257997B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pig
- coating material
- main pipe
- branch
- 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
Links
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 241000282887 Suidae Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は枝管付異径幹管の内面ライニング工法
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for lining the inner surface of a trunk pipe of different diameters with branch pipes.
従来の技術とその問題点
従来、ピグの管内移動につれ、管内充填の塗材
を押動しつつ、管内面に所定厚みの塗材膜を形成
して行くような管内面ライニング工法が提案され
ている。ところがこのような内面ライニング工法
を適用して枝管付異径幹管の内面ライニングを行
なうと、幹管の内面ライニング時に塗材が枝管側
に流入して枝管を閉塞したり、或は枝管の内面ラ
イニング時に余剰の塗材が幹管内に落下して瘤状
の突起物となり、管内流体の流れを妨げるなどの
問題点があつた。Conventional technology and its problems Conventionally, a pipe inner lining method has been proposed in which as the pig moves inside the pipe, the coating material filled inside the pipe is pushed and a coating material film of a predetermined thickness is formed on the inner surface of the pipe. There is. However, when this inner lining method is applied to line the inner surface of a main pipe with different diameters with branch pipes, the coating material may flow into the branch pipe and block the branch pipe during the inner lining of the main pipe. When lining the inner surface of a branch pipe, excess coating material falls into the main pipe and forms a bump-like protrusion that obstructs the flow of fluid within the pipe.
本発明はこのような従来の問題点を一掃するこ
とを目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.
問題点を解決するための手段
本発明は、ピグの管内移動につれ、管内充填の
塗材を押動しつつ、管内面に所定厚みの塗材膜を
形成して行く管内面ライニング工法を適用して、
段階的に口径を減ずる異径幹管と、該異径幹管に
付設の枝管の管内面ライニングを行なうに際し、
最初に枝管側の管内面ライニングを単一ピグの作
動をして行なうと共に、この単一ピグを利用して
枝管と幹管の連絡口を閉塞し、次に異径幹管側の
管内面ライニングを、各異径管部の口径に対応す
る大きさの複数個のピグエレメントを具備する連
設ピグの作動をして行ない、次に上記単一ピグを
連絡口より幹管内に向けて出没させ、連絡口付近
の塗材膜の整形を行なつた後、幹管内より連設ピ
グを回収することを特徴とする枝管付異径幹管の
内面ライニング工法に係る。Means for Solving the Problems The present invention applies a pipe inner lining method in which as the pig moves inside the pipe, the coating material filled inside the pipe is pushed and a coating material film of a predetermined thickness is formed on the inner surface of the pipe. hand,
When lining the inner surface of a different diameter main pipe whose diameter is gradually reduced and a branch pipe attached to the different diameter main pipe,
First, line the inner surface of the pipe on the side of the branch pipe by operating a single pig, and use this single pig to close the communication port between the branch pipe and the main pipe, and then line the inside of the pipe on the side of the main pipe with a different diameter. Surface lining is carried out by operating a series of pigs equipped with a plurality of pig elements of sizes corresponding to the diameters of the different diameter pipe sections, and then the single pig is directed into the main pipe from the communication port. This invention relates to an inner lining construction method for a different diameter main pipe with branch pipes, which is characterized in that the continuous pig is recovered from inside the main pipe after the coating material film in the vicinity of the connecting port is reshaped.
実施例
以下に本発明の一実施例を添付図面にもとづき
説明すると次の通りである。Embodiment An embodiment of the present invention will be described below based on the accompanying drawings.
第１図乃至第６図は、本発明工法を工程順に示
す概略説明図であり、本発明工法に於ては、第１
〜２図に示されるように、最初に枝管１側が単一
ピグ２の作動をして内面ライニング処理される。 1 to 6 are schematic explanatory diagrams showing the construction method of the present invention in the order of steps, and in the construction method of the present invention, the first
As shown in Figures 2 to 2, the branch pipe 1 side is first subjected to inner lining treatment by operating a single pig 2.
枝管１に内面ライニングを施すに際し、該枝管
１内に設置された単一ピグ２は、枝管１の始端管
口１ａをシールするシール部材３をフリーに貫通
して管外に引出されたワイヤロープ、フレキシブ
ルロツドなどのような可撓性線材４に支持され、
この支持状態のもとに、コンプレツサ５、エア導
管６及び上記シール部材３に形成のエア通路７を
順次経て枝管１内に供給される圧縮エアにより、
枝管１内を始端から終端に向けて移動される。こ
の単一ピグ２の管内移動につれ、管内充填の塗材
８は押動され、常法通り枝管１の内面に塗材膜８
ａが形成されて行き、枝管１の内面ライニングの
終了の時点では、第２図に示されるように余剰の
塗材８ｂが幹管９内に落下し堆積する。 When lining the inner surface of the branch pipe 1, the single pig 2 installed in the branch pipe 1 freely passes through the sealing member 3 that seals the starting end port 1a of the branch pipe 1 and is pulled out of the pipe. supported by a flexible wire 4 such as a wire rope, flexible rod, etc.
Under this supported state, compressed air is supplied into the branch pipe 1 through the compressor 5, the air conduit 6, and the air passage 7 formed in the seal member 3 in order.
It is moved within the branch pipe 1 from the starting end to the terminal end. As the single pig 2 moves inside the pipe, the coating material 8 filled in the pipe is pushed, and the coating material film 8 is coated on the inner surface of the branch pipe 1 as usual.
a is formed, and at the end of the inner lining of the branch pipe 1, the excess coating material 8b falls and accumulates inside the main pipe 9, as shown in FIG.
枝管１の内面ライニングを終えた後は、単一ピ
グ２は可撓性線材４の操作をして枝管１の終端管
口、即ち幹管９との連絡口１ｂを閉塞する位置ま
で引戻される（第３図参照）。 After lining the inner surface of the branch pipe 1, the single pig 2 operates the flexible wire 4 and pulls it to a position where it closes the terminal port of the branch pipe 1, that is, the communication port 1b with the main pipe 9. (See Figure 3).
次に第３〜４図に示されるように、異径幹管９
側が、その異径管部９ａ，９ｂの口径に対応する
大きさの２個のピグエレメント１０ａ，１０ｂを
適宜切離し得るように連設した連設ピグ１０の作
動をして内面ライニング処理される。 Next, as shown in FIGS. 3 and 4, the different diameter main pipe 9
The inner side is lined by operating a continuous pig 10 in which two pig elements 10a, 10b of sizes corresponding to the diameters of the different diameter pipe portions 9a, 9b are connected so as to be separated as appropriate.
連設ピグ１０のうち、小径ピグエレメント１０
ｂは、異径幹管９内に通線のロープ１１上に固設
され、一方大径ピグエレメント１０ａは、その中
心の貫通孔１０a1に於て上記ロープ１１上に貫挿
支持され且つ前部の半球状凹部１０a2に於て、上
記小径ピグエレメント１０ｂに嵌着結合されてい
る。大小ピグエレメント１０ａ，１０ｂの嵌着結
合は、通常は嵌着結合状態を保持し、必要時に切
離し得るように行なわれている。このような連設
ピグ１０そのものは公知であり、公知の各種の構
造の連設ピグ１０を用い得る。 Among the continuous pigs 10, the small diameter pig element 10
b is fixedly installed on the rope 11 for passing through the main pipe 9 of different diameters, while the large diameter pig element 10a is inserted and supported on the rope 11 in the through hole 10a1 at the center, and The small-diameter pig element 10b is fitted and connected in the hemispherical recess 10a2 . The large and small pig elements 10a and 10b are normally fitted and connected so that they can be kept in the fitted state and separated when necessary. Such a continuous pig 10 itself is well known, and various publicly known structures of the continuous pig 10 may be used.
第３図に示されるように連設ピグ１０は異径幹
管９の大径側の異径管部９ａ内をロープ１１操作
をして移動され、この移動につれ管内充填の塗材
１２を押動し、大異径管部９ａの内面に塗材膜１
２ａを形成して行く。幹管９内に堆積した余剰塗
材８ｂは、この大異径管部９ａの内面ライニング
施工中、塗材１２中に吸収されるので、余剰塗材
８ｂによる悪影響はなくなる。また塗材１２の一
部は枝管１内に押込まれる傾向となるが、枝管１
への連絡口１ｂは単一ピグ２により閉塞されてい
るので、枝管１内方への塗材１２の押込みは防止
される。この押込み防止を完全なものとするため
に、コンプレツサ５の作動をして枝管１内を加圧
状態に保持できる。 As shown in FIG. 3, the connected pig 10 is moved by manipulating the rope 11 inside the different diameter pipe section 9a on the large diameter side of the different diameter main pipe 9, and as it moves, it pushes the coating material 12 filled inside the pipe. The paint film 1 is formed on the inner surface of the large diameter pipe portion 9a.
2a will be formed. The excess coating material 8b deposited in the main pipe 9 is absorbed into the coating material 12 during construction of the inner lining of the large diameter pipe portion 9a, so that the adverse effects of the excess coating material 8b are eliminated. Also, a part of the coating material 12 tends to be pushed into the branch pipe 1, but
Since the communication port 1b to the branch pipe 1 is closed by a single pig 2, the coating material 12 is prevented from being pushed into the branch pipe 1. In order to completely prevent this pushing, the compressor 5 can be operated to maintain the inside of the branch pipe 1 in a pressurized state.
連設ピグ１０が大異径管９ａの終端の段落ち部
に至ると、大ピグエレメント１０ａはそこにつか
えて残るので、小異径管９ｂ内には小ピグエレメ
ント１０ｂが進入し、該管９ｂの内面ライニング
が行なわれる。 When the continuous pig 10 reaches the stepped part at the end of the large diameter pipe 9a, the large pig element 10a remains stuck there, so the small pig element 10b enters into the small diameter pipe 9b, and the pipe The inner lining of 9b is performed.
第４図に示されるように、異径幹管９の内面ラ
イニングを終えた後は、単一ピグ２が再び幹管９
内に突出され、連絡口１ｂ付近の塗材膜８ａの整
形が行なわれ、この整形により小量の塗材１２ｂ
が幹管９内に落下し堆積する。 As shown in FIG. 4, after finishing the inner lining of the different diameter main pipe 9, the single pig 2 is again attached to the main pipe 9.
The coating material film 8a near the communication port 1b is shaped, and as a result of this shaping, a small amount of coating material 12b is
falls into the main pipe 9 and accumulates.
次に第５図に示されるように単一ピグ２が連絡
口１ｂ内に退去され回収されると共に、連設ピグ
１０が異径幹管９内より逆送回収され、この逆送
回収時に塗材１２ｂの堆積部がならされ修正され
る。修正後の状態が第６図に示されている。 Next, as shown in FIG. 5, the single pig 2 is withdrawn into the communication port 1b and collected, and the continuous pig 10 is returned from the different diameter main pipe 9 and is coated during this return collection. The pile of material 12b is leveled and corrected. The corrected state is shown in FIG.
この第６図に示す状態で塗材膜８ａ，１２ａの
養生硬化を計り、次いで管内通線のロープ１１を
回収することにより、全ての作業を終了する。 In the state shown in FIG. 6, the coating material films 8a and 12a are allowed to cure and harden, and then the rope 11 for passing through the pipe is recovered, thereby completing all the work.
効 果
本発明工法によれば、塗材による枝管１と異径
幹管９との連絡口１ｂの閉塞や瘤状突起物の発生
の虞れがなくなり、枝管付異径幹管の内面ライニ
ングを、施工能率よく、しかも内面ライニングの
品質を損うことなしに実施できる特徴を有する。Effects According to the construction method of the present invention, there is no possibility that the coating material will block the communication port 1b between the branch pipe 1 and the different diameter main pipe 9 or that a lump-like protrusion will occur, and the inner surface of the different diameter main pipe with branch pipes will be removed. It has the feature that lining can be carried out efficiently and without impairing the quality of the inner lining.
第１図乃至第６図は、本発明工法の一実施状況
を工程順に示す概略説明図である。
図に於て、１は枝管、２は単一ピグ、３はシー
ル部材、４は可撓性線材、５はコンプレツサ、６
はエア導管、７はエア通路、８は塗材、９は異径
幹管、１０は連設ピグ、１１はロープ、１２は塗
材である。
FIG. 1 to FIG. 6 are schematic explanatory diagrams showing one implementation status of the construction method of the present invention in the order of steps. In the figure, 1 is a branch pipe, 2 is a single pig, 3 is a sealing member, 4 is a flexible wire, 5 is a compressor, 6
1 is an air conduit, 7 is an air passage, 8 is a coating material, 9 is a main pipe of different diameters, 10 is a continuous pig, 11 is a rope, and 12 is a coating material.
Claims (1)
動しつつ、管内面に所定厚みの塗材膜を形成して
行く管内面ライニング工法を適用して、段階的に
口径を減ずる異径幹管と、該異径幹管に付設の枝
管の管内面ライニングを行なうに際し、最初に枝
管側の管内面ライニングを単一ピグの作動をして
行なうと共に、この単一ピグを利用して枝管と幹
管の連絡口を閉塞し、次に異径幹管側の管内面ラ
イニングを、各異径管部の口径に対応する大きさ
の複数個のピグエレメントを具備する連設ピグの
作動をして行ない、次に上記単一ピグを連絡口よ
り幹管内に向けて出没させ、連絡口付近の塗材膜
の整形を行なつた後、幹管内より連設ピグを回収
することを特徴とする枝管付異径幹管の内面ライ
ニング工法。1. As the pig moves inside the pipe, the coating material filled inside the pipe is pushed and a coating material film of a predetermined thickness is formed on the inner surface of the pipe. This method is used to gradually reduce the diameter of the pipe. When lining the inner surface of the pipe and the branch pipes attached to the main pipe of different diameters, first line the inner surface of the pipe on the branch pipe side by operating a single pig, and by using this single pig. The communication port between the branch pipe and the main pipe is closed, and then the pipe inner lining on the different diameter main pipe side is attached to a continuous pig which has a plurality of pig elements of sizes corresponding to the diameters of the different diameter pipe sections. After the above-mentioned single pig is operated, the above-mentioned single pig is moved into and out of the main pipe from the communication port, and the coating film near the communication port is shaped, and then the connected pig is recovered from inside the main pipe. Features an inner lining construction method for different diameter trunk pipes with branch pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26896387A JPH01111475A (en) | 1987-10-23 | 1987-10-23 | Inner face lining method for pipe having different size bores with branch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26896387A JPH01111475A (en) | 1987-10-23 | 1987-10-23 | Inner face lining method for pipe having different size bores with branch pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01111475A JPH01111475A (en) | 1989-04-28 |
| JPH0257997B2 true JPH0257997B2 (en) | 1990-12-06 |
Family
ID=17465732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26896387A Granted JPH01111475A (en) | 1987-10-23 | 1987-10-23 | Inner face lining method for pipe having different size bores with branch pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01111475A (en) |
-
1987
- 1987-10-23 JP JP26896387A patent/JPH01111475A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01111475A (en) | 1989-04-28 |
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