JPS6318074B2 - - Google Patents
Info
- Publication number
- JPS6318074B2 JPS6318074B2 JP55122566A JP12256680A JPS6318074B2 JP S6318074 B2 JPS6318074 B2 JP S6318074B2 JP 55122566 A JP55122566 A JP 55122566A JP 12256680 A JP12256680 A JP 12256680A JP S6318074 B2 JPS6318074 B2 JP S6318074B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- layer
- heated
- gas pipe
- tar
- 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
- 239000010410 layer Substances 0.000 claims description 31
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【発明の詳細な説明】 本発明は既設ガス管の補修工法に関する。[Detailed description of the invention] The present invention relates to a method for repairing existing gas pipes.
既設ガス管の補修工法として、管内面にチユー
ブを内張りし、管の腐蝕部や継目部分の補修を行
うことが提案されている。この補修工法は漏洩個
所を、個々に適宜の手段を適用して補修する従来
工法に比べ労力と時間を節約できる。しかしなが
ら管内に内張りチユーブを接着するために管内面
か或はチユーブの外面に予め接着剤を塗布してお
くことが必要となり、このような接着剤の塗布作
業は仲々面倒であるだけでなく、予め塗布された
接着剤が管内へのチユーブの引込みを妨げるな
ど、トラブルの原因となることがある。また一般
に接着剤としてはエポキシ樹脂を主剤とする反応
硬化型の接着剤が使用されるのであるが、このよ
うな接着剤は比較的高価であり、接着剤の多量の
消費は工費の高騰を招く。 As a repair method for existing gas pipes, it has been proposed to line the inner surface of the pipe with a tube and repair corroded parts and joints of the pipe. This repair method can save labor and time compared to the conventional method of repairing each leak by applying appropriate means. However, in order to bond the lined tube inside the pipe, it is necessary to apply adhesive to the inner surface of the tube or the outer surface of the tube in advance. The applied adhesive may cause problems such as blocking the tube from being drawn into the pipe. In addition, reaction-curing adhesives based on epoxy resin are generally used as adhesives, but such adhesives are relatively expensive, and the consumption of large amounts of adhesive leads to a rise in construction costs. .
本発明者は、上記従来の諸問題を一掃するべく
鋭意研究を重ねた結果、防錆及びガス流動抵抗の
減少などを目的として、ガス管の内面に予め形成
されているタール層は、長い年月を経過した後で
あつても、その表層部を掻き乱して後加熱すると
きは、ガス管内面に対するチユーブの接着剤とし
て利用し得ることを見出し、茲に本発明を完成す
るに至つたものである。 As a result of intensive research to eliminate the above-mentioned conventional problems, the inventor of the present invention discovered that the tar layer that is pre-formed on the inner surface of gas pipes has been removed for many years in order to prevent rust and reduce gas flow resistance. It was discovered that even after months have passed, when the surface layer is disturbed and post-heated, it can be used as an adhesive for the tube to the inner surface of the gas pipe, and this led to the completion of the present invention. It is something.
本発明による既設ガス管の補修工法は、既設の
ガス管の内面に防錆及びガス流動抵抗の減少など
を目的として予め形成されていた、長い年月を経
過した後のタール層の表層部を掻き乱して、内部
の新しい層の少なくとも一部を表面に露出して
後、該ガス管の内周面に内張りチユーブを密着す
ると共に該チユーブの内面側より加熱加圧流体で
もつて上記タール層を軟化乃至溶融し、接着剤と
して機能させることを特徴としている。 The repair method for existing gas pipes according to the present invention removes the tar layer that has been formed on the inner surface of existing gas pipes for the purpose of preventing rust and reducing gas flow resistance after many years. After stirring to expose at least a part of the new inner layer to the surface, a lining tube is tightly attached to the inner peripheral surface of the gas pipe, and heated and pressurized fluid is applied from the inner surface of the tube to remove the tar layer. It is characterized by its ability to soften or melt and function as an adhesive.
本発明補修工法によれば、既設ガス管の内面に
予め形成されているタール層を接着剤として利用
できるので、煩雑な接着剤の塗布工程並びに高価
な接着剤の消費を省くことができ、作業能率の向
上と併せて工費の節減化を計り得る特徴がある。
更にガス管内面に対するチユーブの密着作業時に
は、タール層はいまだ接着剤として機能し得ない
状態にあるので、タール層がチユーブの密着作業
時にトラブル原因となることがなく、トラブルの
発生なしに補修施工を実施できる。 According to the repair method of the present invention, the tar layer pre-formed on the inner surface of the existing gas pipe can be used as an adhesive, so the complicated adhesive application process and the consumption of expensive adhesive can be omitted. It has the characteristics of improving efficiency and reducing construction costs.
Furthermore, when the tube is attached to the inner surface of the gas pipe, the tar layer is still in a state where it cannot function as an adhesive, so the tar layer does not cause trouble when the tube is attached to the inner surface of the gas pipe, and repairs can be carried out without any trouble. can be carried out.
本発明に於て、既設ガス管の内面に予め形成さ
れているタール層とは、防錆及びガス流動抵抗減
少を目的として、ガス管内面に形成されているタ
ールを主成分とする公知の全てのライニング層を
含み、通常75〜85℃に加熱すると軟化し、100℃
前後に加熱すると溶融する。 In the present invention, the tar layer pre-formed on the inner surface of an existing gas pipe refers to any known tar layer formed on the inner surface of the gas pipe that is mainly composed of tar for the purpose of rust prevention and reducing gas flow resistance. It usually softens when heated to 75-85℃, and it softens when heated to 100℃.
It melts when heated back and forth.
上記タール層の表層部を掻き乱し内部の新しい
層の少なくとも一部を表面に露出させる手段とし
ては、最も一般的には、既設埋設管の再生に際
し、管内クリーニングに用いられているワイヤブ
ラシ利用の公知のクリーニング装置を使用でき
る。勿論その他の手段を採用してもよい。 The most common way to disturb the surface layer of the tar layer and expose at least a part of the new layer to the surface is to use a wire brush, which is used for cleaning inside pipes when reclaiming existing buried pipes. Any known cleaning device can be used. Of course, other means may also be used.
ガス管内に密着される内張り用チユーブとして
は、上記タール層の軟化乃至溶融状態に於て、該
タール層に粘着接着されるような材質のものが使
用され、例えばナイロン、ポリウレタン、ポリプ
ロピレン、ポリ塩化ビニル製のものを使用でき、
このようなチユーブはガス管内面に流体圧を介し
て密着するために、柔軟弾性を有していることが
好ましい。 The lining tube that is tightly attached to the inside of the gas pipe is made of a material that can be adhesively bonded to the tar layer when the tar layer is in a softened or molten state, such as nylon, polyurethane, polypropylene, polychloride, etc. You can use vinyl ones,
It is preferable that such a tube has flexibility and elasticity so that it can be brought into close contact with the inner surface of the gas pipe via fluid pressure.
ガス管内面に内張り用のチユーブを密着するた
めの手段としては、管内面に対するチユーブの内
張り工法に於て、通常採用されているような手段
を採用できる。例えば管内にチユーブを引込んだ
後、チユーブを流体圧を利用して膨脹させ管内面
に密着させる手段や或はチユーブを管内に流体圧
を利用して反転挿入しつつ密着するような方法を
採用できる。 As a means for closely adhering the lining tube to the inner surface of the gas pipe, any means commonly employed in lining tubes to the inner surface of the pipe can be employed. For example, after the tube is drawn into the pipe, the tube is expanded using fluid pressure and brought into close contact with the inner surface of the pipe, or the tube is reversely inserted into the pipe using fluid pressure and brought into close contact. can.
ガス管内面に密着されたチユーブ内面よりター
ル層を加熱するために使用される加熱加圧流体と
しては、加熱空気、加熱水又はスチームなどを例
示でき、タール層は上記加熱加圧流体により75〜
100℃程度の温度に加熱される。タール層は加熱
加圧流体により加熱されると軟化乃至溶融して接
着剤として機能し、チユーブを管内面に接着す
る。このタール層の表層部は掻き乱され、内部の
新しい層が表面に露出されているので、新しいタ
ールを用いると同じように、管内面に対しチユー
ブを安定確実に接着できる。この加熱操作時に於
ては、チユーブは加熱加圧流体により管内面に圧
着されるので、全体を通して均一な接着状態が得
られる。チユーブに対する加圧の度合は、特に限
定はないが、0.5〜5.0Kg／cm2の範囲が適当であ
る。 Examples of the heated pressurized fluid used to heat the tar layer from the inner surface of the tube that is in close contact with the inner surface of the gas pipe include heated air, heated water, or steam.
It is heated to a temperature of about 100℃. When heated by the heated pressurized fluid, the tar layer softens or melts and acts as an adhesive, bonding the tube to the inner surface of the tube. Since the surface layer of this tar layer is disturbed and a new inner layer is exposed on the surface, the tube can be stably and reliably bonded to the inner surface of the tube in the same way as when fresh tar is used. During this heating operation, the tube is pressed against the inner surface of the tube by the heated pressurized fluid, so that a uniform adhesion state can be obtained throughout. The degree of pressure applied to the tube is not particularly limited, but a range of 0.5 to 5.0 kg/cm 2 is appropriate.
以下に本発明の一実施を添附図面にもとづき説
明すると次の通りである。 An embodiment of the present invention will be described below based on the accompanying drawings.
第１図は既設のガス管１の内面に予め形成され
ているタール層２の表面の掻き乱し工程時の状況
を示している。 FIG. 1 shows the situation during the process of disturbing the surface of a tar layer 2 previously formed on the inner surface of an existing gas pipe 1.
後端に回転ワイヤーブラシ３ａを有する掻き乱
し装置３は、ガス管１内を第１図に於て左→右方
へワイヤー３ｂを介して牽引走行される。上記装
着３はワイヤーブラシ３ａを回転するためのモー
タ（図示せず）を内蔵し、該モータはエアーホー
ス（エアーモータ）又はキヤプタイヤ（電気モー
タ）などの連結材３ｃ及び該連結材３ｃを巻取る
ウインチ３ｄの巻取軸３d1を介して動力源に接続
される。 The agitation device 3, which has a rotating wire brush 3a at its rear end, is towed inside the gas pipe 1 from left to right in FIG. 1 via a wire 3b. The mounting 3 has a built-in motor (not shown) for rotating the wire brush 3a, and the motor winds up a connecting member 3c such as an air hose (air motor) or a cap tire (electric motor) and the connecting member 3c. It is connected to a power source via the winding shaft 3d1 of the winch 3d.
タール層２は上記ワイヤブラシ３ａの回転によ
り表層部が掻き乱され、表面には内部の新しい層
が露出される。その結果タール層２表面に付着し
ていたほこり成分は、該表面より実質的に除去さ
れ、加熱軟化乃至溶融によつて接着剤として機能
し得る状態となる。 The surface layer of the tar layer 2 is disturbed by the rotation of the wire brush 3a, and a new inner layer is exposed on the surface. As a result, the dust components adhering to the surface of the tar layer 2 are substantially removed from the surface, and the tar layer 2 becomes in a state where it can function as an adhesive by being softened or melted by heating.
第２図及び第３図は、ガス管１内に対する内張
りチユーブ４の挿装時の状況を示している。第２
図から明かなようにリール５に巻取られた内張り
用のチユーブ４はウインチ６により巻取られるワ
イヤー７を介してガス管１内に引込まれ、次いで
所定の長さに切断されて後、第３図に示すように
両端がガス管１の始端と終端にそれぞれ止着され
る。一方ガス管１の始端部と終端部には、排気口
８が設けられる。この排気口８はチユーブの内張
り終了後、閉鎖される。 2 and 3 show the situation when the lining tube 4 is inserted into the gas pipe 1. FIG. Second
As is clear from the figure, the lining tube 4 wound on a reel 5 is drawn into the gas pipe 1 via the wire 7 wound by the winch 6, and then cut to a predetermined length. As shown in FIG. 3, both ends are fixed to the starting and ending ends of the gas pipe 1, respectively. On the other hand, an exhaust port 8 is provided at the starting end and the terminal end of the gas pipe 1. This exhaust port 8 is closed after the tube is lined.
第４図はガス管１内面に対するチユーブ４の密
着並びにタール層２に対する加熱時の状況を示し
ている。このような操作を行うためにガス管１の
始端と終端には、メクラキヤツプ９ａ，９ｂが施
され、始端側のキヤツプ９ａには供給バルブ１０
を具備し一端が加熱加圧流体の供給源１１に連結
された導管１２が付設され、終端側のキヤツプ９
ｂには排気バルブ１３付の排気管１４が付設され
ている。 FIG. 4 shows the state in which the tube 4 is in close contact with the inner surface of the gas pipe 1 and the tar layer 2 is heated. In order to perform such operations, blind caps 9a and 9b are provided at the starting and ending ends of the gas pipe 1, and a supply valve 10 is provided at the cap 9a on the starting end side.
A conduit 12 having one end connected to a supply source 11 of heated pressurized fluid is attached, and a cap 9 on the terminal side is attached.
An exhaust pipe 14 with an exhaust valve 13 is attached to b.
而して排気バルブ１３を閉、供給バルブ１０を
開にして、チユーブ４内に加熱加圧流体を供給す
ると、チユーブ４は膨脹し管１内面に密着すると
共に、タール層２は該流体によつて加熱され、軟
化乃至溶融し、その保有する粘着性によつてチユ
ーブ４を管１内面に接着する。この場合例えば加
熱加圧流体としてスチームを使用するような場合
には、最初に必要に応じ加熱された空気をチユー
ブ内に供給して該チユーブを管内面に密着した後
に、更にチユーブ内にスチームを供給してタール
層を加熱するようにしてもよい。また加熱空気や
加熱水を用いる場合には、之等を循環して循環系
の途中に加熱器を備えるようにしてもよい。 When the exhaust valve 13 is closed and the supply valve 10 is opened to supply heated pressurized fluid into the tube 4, the tube 4 expands and comes into close contact with the inner surface of the tube 1, and the tar layer 2 is covered by the fluid. The tube 4 is heated and softened or melted, and the tube 4 is adhered to the inner surface of the tube 1 by its adhesive property. In this case, for example, when steam is used as the heated pressurized fluid, heated air is first supplied into the tube as necessary to bring the tube into close contact with the inner surface of the tube, and then steam is further supplied into the tube. The tar layer may be heated by supplying the tar layer. Further, when using heated air or heated water, a heater may be provided in the middle of the circulation system to circulate the air or water.
管内面にチユーブ４が接着された後は、管１よ
りメクラキヤツプ９ａ，９ｂを取外し、且つ排気
口８を閉鎖することにより内張り作業を完了す
る。 After the tube 4 is adhered to the inner surface of the tube, the blind caps 9a and 9b are removed from the tube 1, and the exhaust port 8 is closed, thereby completing the lining work.
図面は本発明実施の一例を示し、第１図はター
ル層表面の掻き乱工程時の状況を示す縦断面図、
第２図及び第３図はガス管内に対する内張り用チ
ユーブの挿装工程時の状況を示す縦断面図、第４
図はタール層の加熱工程時の状況を示す縦断面図
である。
図に於て、１はガス管、２はタール層、３は掻
き乱し装置、４は内張りチユーブである。
The drawings show an example of the implementation of the present invention, and FIG. 1 is a longitudinal sectional view showing the situation during the step of disturbing the surface of the tar layer.
Figures 2 and 3 are longitudinal sectional views showing the process of inserting the lining tube into the gas pipe;
The figure is a longitudinal sectional view showing the situation during the heating process of the tar layer. In the figure, 1 is a gas pipe, 2 is a tar layer, 3 is a stirring device, and 4 is a lined tube.
Claims (1)
の減少などを目的として予め形成されていた、長
い年月を経過した後のタール層の表層部を掻き乱
して内部の新しい層の少なくとも一部を表面に露
出して後、該ガス管の内周面に内張り用チユーブ
を密着すると共に該チユーブの内面側より加熱加
圧流体でもつて上記タール層を軟化乃至溶融し接
着剤として機能させ、ガス管内面に対しチユーブ
を接着することを特徴とする既設ガス管の補修工
法。1. Disturbing the surface layer of tar layer that has been formed in advance on the inner surface of existing gas pipes for the purpose of preventing rust and reducing gas flow resistance, etc. After exposing a portion to the surface, a lining tube is closely attached to the inner peripheral surface of the gas pipe, and heated and pressurized fluid is applied from the inner surface of the tube to soften or melt the tar layer to function as an adhesive. , a method for repairing existing gas pipes, characterized by gluing tubes to the inner surface of the gas pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55122566A JPS5747090A (en) | 1980-09-03 | 1980-09-03 | Repairing method of varied gas pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55122566A JPS5747090A (en) | 1980-09-03 | 1980-09-03 | Repairing method of varied gas pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5747090A JPS5747090A (en) | 1982-03-17 |
| JPS6318074B2 true JPS6318074B2 (en) | 1988-04-16 |
Family
ID=14839060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55122566A Granted JPS5747090A (en) | 1980-09-03 | 1980-09-03 | Repairing method of varied gas pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5747090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01125074U (en) * | 1988-02-16 | 1989-08-25 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61274026A (en) * | 1985-05-30 | 1986-12-04 | タキロン株式会社 | Lining method |
| JPH01159620U (en) * | 1988-04-27 | 1989-11-06 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447768A (en) * | 1977-09-21 | 1979-04-14 | Osaka Gas Co Ltd | Inner surface coating of conduit already constructed |
-
1980
- 1980-09-03 JP JP55122566A patent/JPS5747090A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447768A (en) * | 1977-09-21 | 1979-04-14 | Osaka Gas Co Ltd | Inner surface coating of conduit already constructed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01125074U (en) * | 1988-02-16 | 1989-08-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5747090A (en) | 1982-03-17 |
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