JPS6124067B2 - - Google Patents
Info
- Publication number
- JPS6124067B2 JPS6124067B2 JP57074321A JP7432182A JPS6124067B2 JP S6124067 B2 JPS6124067 B2 JP S6124067B2 JP 57074321 A JP57074321 A JP 57074321A JP 7432182 A JP7432182 A JP 7432182A JP S6124067 B2 JPS6124067 B2 JP S6124067B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- lining
- pressure
- resin
- airflow
- 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
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000012159 carrier gas Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 description 23
- 238000005260 corrosion Methods 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 14
- 239000003595 mist Substances 0.000 description 8
- 238000007664 blowing Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010951 particle size reduction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Spray Control Apparatus (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
本発明は、地下に布設されたガス管、水道管な
どの既設管、特に管径の小さい小口径の既設配管
に対し、その管内面に布設状態のまま樹脂のライ
ニング塗膜を形成するように補修する既設管の内
面ライニング補修工法に関するものである。
The present invention is capable of forming a resin lining film on the inner surface of existing pipes such as gas pipes and water pipes installed underground, especially small-diameter existing pipes while the pipes are still installed. This relates to a method for repairing the inner lining of existing pipes to be repaired.
従来、ガス管、水道管などの地中に埋設された
導管、供給管、または屋内配管を、布設状態のま
までその内面から補修する方法が種々提唱されて
いる。その補修工法の１つとして、例えば特開昭
54−31622号公報、特開昭55−39274号公報等にみ
られる先行技術のように、エポキシ樹脂などの塗
料をライニング剤として、これを圧力空気流と混
合させた状態で既設管の管内に吹込み、その管内
を高速で流通させて管内壁面に付着、固化させる
方法が知られている。この時のライニング剤を吹
込む空気圧は、従来の場合、管内において２Kg/
cm2〜７Kg/cm2程度の高い圧力であり、また流速も
80m/s〜100m/sの高速であつた。
Conventionally, various methods have been proposed for repairing underground conduits, supply pipes, or indoor piping, such as gas pipes and water pipes, from the inside while they are still installed. As one of the repair methods, for example,
As in the prior art disclosed in Japanese Patent Publication No. 54-31622 and Japanese Patent Application Laid-Open No. 55-39274, paint such as epoxy resin is used as a lining agent, and this is mixed with a flow of pressurized air and applied inside the existing pipe. A method is known in which the material is blown into the pipe and allowed to flow through the pipe at high speed, thereby adhering to the inner wall surface of the pipe and solidifying it. In the conventional case, the air pressure for blowing the lining agent at this time was 2 kg/
The pressure is high, about cm 2 to 7Kg/cm 2 , and the flow rate is also low.
The speed was 80m/s to 100m/s.
ところで、上述の方法によつて補修しようとす
る対象の既設配管は、特にガス配管についていう
と、道路下に布設された導管（本管、支管）より
分岐されて各家庭にガスを供給する「供給管」の
ような比較的に管径の小さい小口径の既設配管を
対象とするものであり、この種の供給管は、その
管の肉厚も薄いことから、ライニング剤を従来の
ように高圧、高速で管内に圧送する場合には次の
ような問題があつた。
すなわち補修の対象管（供給管）には、永年の
布設により管の周壁にピンホール状の腐蝕孔が起
きている場合があり、これを孔うめ（孔を閉塞）
すべく補修が行なわれるのであるが、この場合に
従来の先行技術のように高圧（２Kg/cm2〜７Kg/cm2
程度）の空気流でライニング剤を管内に圧送させ
る方式では、その腐蝕孔の部分よりライニング剤
が管の外に噴出し、吹抜け現象を起すことから、
腐蝕孔を塞ぐようにライニング塗膜を形成するこ
とが不可となる問題があり、また、加えて腐蝕孔
が、圧送空気により拡大（空洞化）されて管が破
損されてしまう問題も起き、補修の意義が失なわ
れてしまうという重大な不都合があつた。
また当然のことながら圧縮空気によりライニン
グ剤を高圧、高速で管内に吹込む場合には、その
圧送空気源として大型のコンプレツサ等も必要と
なり、特に上述の供給管は、これが家庭に近接し
た住宅地内に配置されていることもあつて、ここ
に騒音の問題も起る等の不都合もあつた。
By the way, the existing piping that is to be repaired using the above method, especially when it comes to gas piping, is a pipe that is branched off from a conduit (main pipe, branch pipe) laid under the road and supplies gas to each home. This type of supply pipe is intended for existing small-diameter pipes with a relatively small diameter, such as "supply pipes", and because the wall thickness of this type of supply pipe is thin, it is not necessary to use a lining agent as in the past. When pumping into pipes at high pressure and high speed, the following problems occurred. In other words, the pipe to be repaired (supply pipe) may have a pinhole-like corrosion hole on the peripheral wall of the pipe due to long-term installation, and this hole must be filled (blocked).
However, in this case, high pressure (2Kg/cm 2 to 7Kg/cm 2
In the method in which the lining agent is forced into the pipe using an air flow of about 100 to 300 ml, the lining agent squirts out of the pipe from the corrosion hole, causing a blow-through phenomenon.
There is a problem that it is not possible to form a lining film to close the corrosion holes, and in addition, there is a problem that the corrosion holes are enlarged (hollowed) by the pressurized air and the pipe is damaged, making it difficult to repair. There was a serious inconvenience in that the significance of the term was lost. Naturally, when compressed air is used to blow lining agent into pipes at high pressure and high speed, a large compressor or the like is required as the source of the compressed air. Because it was located in the area, there were some inconveniences such as noise problems.
本発明は、上述の問題を課題として提案された
もので、補修の対象とする既設管が、仮に管径が
細く肉厚が薄い小口径の管体であつても、その管
のライニング補修中に、管体の周壁に生起した上
述の腐蝕孔を拡大させる恐れがなく、確実にその
腐蝕孔をライニング剤によつて孔うめしつつ管内
面にライニング塗膜を形成することができるよう
にした既設管の内面ライニング補修工法を提供し
ようとするものである。
The present invention has been proposed to address the above-mentioned problem. In addition, there is no fear of enlarging the above-mentioned corrosion holes that have occurred on the peripheral wall of the pipe body, and it is possible to form a lining coating film on the inner surface of the pipe while reliably filling the corrosion holes with the lining agent. The purpose is to provide a method for repairing the inner lining of existing pipes.
上述の目的を達成するため、本発明は、ライニ
ング樹脂を、所要の流速を有する担持ガスの気流
に拡散した状態で既設管の一端側開口部より管内
に吹込み当該管内を流動させて管内面に塗膜を形
成するに際し、上記担持ガスの気流圧力を、既設
管内において大気圧に対し0.2Kg/cm2〜0.6Kg/cm2程
度の僅かな圧力差を有する低力に設定し、この低
圧の気流により上記ライニング樹脂を管内に流動
させて管内面にライニング塗膜を形成するように
補修することを特徴とするものである。
In order to achieve the above-mentioned object, the present invention blows a lining resin into an existing pipe from an opening on one end side in a state where it is diffused in a carrier gas airflow having a required flow rate, and causes the lining resin to flow inside the pipe, thereby forming an inner surface of the pipe. When forming a coating film, the airflow pressure of the supported gas is set to a low pressure with a slight pressure difference of about 0.2Kg/cm 2 to 0.6Kg/cm 2 from atmospheric pressure in the existing pipe, and this low pressure This repair is characterized in that the lining resin is caused to flow into the pipe by the airflow to form a lining coating film on the inner surface of the pipe.
以下、本発明の工法を、図示の具体例にもとづ
いて説明する。
第１図において、符号１は送風源となるコンプ
レツサで、各コンプレツサ１の空気出口側がヘツ
ダ２に連通されている。このヘツダ２は、ガバナ
３を介して空気加熱機４に連通されており、その
空気加熱機４は、ボイラ５より減圧弁６を介して
供給された上記蒸気と、上記ヘツダ２からの圧縮
空気との間で熱交換し、例えば0.3Kg/cm2程度の低
圧の担持ガス流を生成させるものである。上記担
持ガス流は、気流発生器７を介して所要の気流形
態、例えば渦流となつて樹脂ライニングヘツド８
へともたらされる。
一方、上記空気加熱機４は、バイパス路９を介
して上記ライニングヘツド８へ加熱空気を流すの
であるが、上記バイパス路９には、エポキシ樹脂
などの熱硬化性樹脂がライニング剤として樹脂注
入手段、例えばタンク１０から供給される。上記
タンク１０から上記バイパス路９へのライニング
剤の供給は、加熱空気中への液滴下方式あるいは
噴射の方式が採用できる。この実施例では、圧力
調整器１１を介してヘツダ２から供給された圧縮
空気の圧力によつてタンク１０内から樹脂を噴射
する方式を採用している。また上記ライニング剤
は、電気ヒータ１２によつてタンク１０内を加温
させ、適当な粘度まで下げられている。
なお第１図中、符号１３はガバナ３の下流に設
けた安全弁、１４は流量計、１５は圧力計、１６
は温度計である。
またこの実施例では、気流発生器７の下流にお
いて、これに研磨剤投入器１７がバルブ１８を介
して連通してあり、上記投入器１７にもヘツダ２
から圧縮空気が供給されるようになつていて、バ
ルブ１８を開放した時、上記圧縮空気で気流発生
器７の下流に研磨剤を供給できるようにしてい
る。
よつて上記ライニングヘツド８を、導管により
補修しようとする既設管Ａ（支管および供給管を
含む対象既設管系）の一方の入口側に連通し、上
記既設管Ａの他方の出口側に、導管２０を介して
研磨剤の回収器１９を接続する。このような接続
状態においてコンプレツサ１の運転により、バイ
パス路９内では、加熱空気流の中にライニング剤
が墳射されて上記空気流中に拡散し細粒化され
る。上記ライニング剤は、例えば非垂下性（遥変
性）の大きい特性をもつエポキシ樹脂が用いら
れ、これは熱硬化性樹脂であつても可使用時間内
であれば固化は起らない。しかして上記のような
特性の樹脂からなるライニング剤は、これが予熱
により低粘度になつているので空気流中への分散
がよく、より細粒化されているので、ライニング
ヘツド８に入つた時、担持ガス流により既設管Ａ
の管内に向けて搬送され、その管内を、より遠距
離まで搬送できる。この搬送過程でライニング剤
は、既設管Ａの管内壁に付着しつつ流動し、その
管の内壁面に樹脂のライニング塗膜層Ｂが形成さ
れるものである。
この場合、補修対象の既設管Ａには、その管体
周壁に腐蝕孔が生起していても、上述のように担
持ガス流の圧力は、例えば0.3Kg/cm2（大気圧に対
して）程度の低い低圧であつて、その気流の圧力
が低いことから、ライニング剤が上記腐蝕孔より
管の外に噴出するようなことがなく、上記腐蝕孔
を、ライニング剤で孔うめ（孔を閉塞）するよう
に管内面にライニング塗膜を形成することができ
る。
なお上述の実施例では、担持ガスの気流の圧力
を0.3Kg/cm2程度に設定しているが、上記気流の圧
力は、本発明の場合、既設管内において大気圧に
対し僅かな圧力差を持つ程度の低圧に設定してい
ることを特徴とし、その低圧の範囲は、まず管内
に導入される樹脂を確実に気流搬送し得るように
する必要から下限は0.2Kg/cm2以上に設定してあれ
ばよく、また上限は、前記した管の腐蝕孔より樹
脂の吹き抜け現象が起らないようにする必要から
0.6Kg/cm2未満程度に設定してあればよい。
また上述の実施例では、ライニング剤を空気流
中に噴射する前に、予めバルブ１８を開いて、気
流発生器７からの担持ガスの流れに対して研磨剤
投入器１７より研磨剤を導入し、既設管Ａの管内
に導いて、ライニング前処理として既設管Ａの内
面研磨を行つてもよい。この研磨剤は、管内壁よ
り除去された錆などと共に回収器１９に回収さ
れ、外部に取出される。
第２図の表は、ライニング剤の粘度とミスト濃
度（ここでは担持ガス流中へのライニング剤の分
散度を示す）との関係を示したもので、粘度の低
いものが採用できれば、ミスト濃度が高められる
ことを示している。また第３図の表は、ミスト濃
度とミストの到達距離の関係が、また第４図の表
は、到達距離によるミスト粒径分布の関係が示さ
れている。これらからライニング剤としての樹脂
特性およびその細粒化を適宜選択することによつ
て、管内に吹込まれるライニング剤の搬送長さを
延長させることが理解できる。
Hereinafter, the construction method of the present invention will be explained based on specific examples shown in the drawings. In FIG. 1, reference numeral 1 denotes a compressor serving as an air blowing source, and the air outlet side of each compressor 1 is communicated with a header 2. The header 2 is connected to an air heater 4 via a governor 3, and the air heater 4 receives the steam supplied from the boiler 5 through the pressure reducing valve 6 and the compressed air from the header 2. It exchanges heat with the carrier gas to generate a carrier gas flow at a low pressure of, for example, 0.3 Kg/cm 2 . The carrier gas flow is passed through the airflow generator 7 into a desired airflow form, e.g.
brought to. On the other hand, the air heater 4 flows heated air to the lining head 8 via a bypass path 9. In the bypass path 9, a thermosetting resin such as an epoxy resin is injected as a lining agent. , for example, from the tank 10. The lining agent can be supplied from the tank 10 to the bypass path 9 by dropping the liquid into the heated air or by spraying it. In this embodiment, a method is adopted in which resin is injected from inside the tank 10 by the pressure of compressed air supplied from the header 2 via the pressure regulator 11. Further, the lining agent is heated inside the tank 10 by an electric heater 12 to lower the viscosity to an appropriate level. In FIG. 1, reference numeral 13 is a safety valve provided downstream of the governor 3, 14 is a flow meter, 15 is a pressure gauge, and 16 is a safety valve provided downstream of the governor 3.
is a thermometer. Further, in this embodiment, downstream of the airflow generator 7, an abrasive injector 17 is communicated with it via a valve 18, and the abrasive injector 17 is also connected to a header 2.
Compressed air is supplied from the airflow generator 7, and when the valve 18 is opened, the compressed air can be used to supply the abrasive to the downstream side of the airflow generator 7. Therefore, the lining head 8 is connected to one inlet side of the existing pipe A to be repaired (target existing pipe system including branch pipes and supply pipes) through a conduit, and a conduit is connected to the other outlet side of the existing pipe A. An abrasive collector 19 is connected via 20. When the compressor 1 is operated in such a connected state, the lining agent is injected into the heated air flow in the bypass passage 9, and is dispersed into the air flow to become fine particles. The lining agent used is, for example, an epoxy resin that has a high non-sagging property (hardening properties), and even if it is a thermosetting resin, it will not solidify within its usable life. However, the lining agent made of resin with the above characteristics has a low viscosity due to preheating, so it is well dispersed in the air flow, and the particles are finer, so when it enters the lining head 8, it has a low viscosity. , the existing pipe A due to the supported gas flow
The material is transported into the pipe, and can be transported further within the pipe. During this transportation process, the lining agent flows while adhering to the inner wall of the existing pipe A, and a resin lining coating layer B is formed on the inner wall surface of the pipe. In this case, even if the existing pipe A to be repaired has corrosion holes in its peripheral wall, the pressure of the supported gas flow is, for example, 0.3 Kg/cm 2 (relative to atmospheric pressure) as described above. Since the pressure is low and the pressure of the airflow is low, the lining agent does not spray out of the pipe from the corrosion hole, and the corrosion hole can be filled (closed) with the lining agent. ) A lining coating film can be formed on the inner surface of the pipe. In the above-mentioned embodiment, the pressure of the airflow of the carrier gas is set to about 0.3Kg/cm 2 , but in the case of the present invention, the pressure of the airflow is set so that there is a slight pressure difference with respect to atmospheric pressure in the existing pipe. The low pressure range is set to 0.2 kg/cm 2 or more because it is necessary to ensure that the resin introduced into the pipe can be transported by air flow. The upper limit is determined by the need to prevent the resin from blowing through the corrosion holes in the pipe as described above.
It is sufficient if it is set to less than 0.6Kg/ cm2 . Furthermore, in the embodiment described above, before injecting the lining agent into the air stream, the valve 18 is opened in advance and the abrasive agent is introduced from the abrasive injector 17 into the flow of the carrier gas from the air flow generator 7. , the inner surface of the existing pipe A may be polished as a lining pretreatment by guiding it into the existing pipe A. This abrasive, along with rust removed from the inner wall of the pipe, is collected in the collector 19 and taken out to the outside. The table in Figure 2 shows the relationship between the viscosity of the lining agent and the mist concentration (here, the degree of dispersion of the lining agent into the supported gas flow). This shows that it can be enhanced. The table in FIG. 3 shows the relationship between the mist concentration and the distance traveled by the mist, and the table in FIG. 4 shows the relationship between the mist particle size distribution depending on the distance traveled. It can be understood that by appropriately selecting the resin properties as a lining agent and its particle size reduction from these, the conveyance length of the lining agent blown into the pipe can be extended.
本発明は、以上に詳述したように、ライニング
樹脂を、所要の流速を有する担持ガスの気流に拡
散した状態で既設管の管内に吹込み流動させて管
内面に塗膜を形成するに際し、上記担持ガスの気
流圧力を、既設管内において大気圧に対し0.2Kg/
cm2〜0.6Kg/cm2程度の僅かな圧力差を有する低圧に
設定し、この低圧の気流により上記ライニング樹
脂を管内に流動させて管内面にライニング塗膜を
形成するように補修するものであるから次のよう
な効果が得られる。
(1) まず、担持ガス流によるライニング樹脂の管
内搬送は、大気圧に対して僅かな圧力差を持つ
低圧の気流搬送なので、従来の先行技術のよう
な高圧の圧力空気流でライニング樹脂を圧送す
る場合と異り、その補修対象の既設管に腐蝕孔
が生起していても、ライニング補修中に、当該
腐蝕孔を拡大したり管を破損させるような恐れ
がなく、また上記腐蝕孔からライニング剤が管
外に吹抜け現象を起すこともないので、その腐
蝕孔を確実に塞ぐように管内面に樹脂のライニ
ング塗膜を形成することができる。
(2) また高圧の空気流によるライニング樹脂の管
内送では、その動圧が高いため、既設管のベン
ト部分では動圧を受ける側のライニング層が薄
くなり、反対側が無用に厚くなるが、本発明で
は上述のように低圧の気流搬送なので、動圧が
それほど高くならず、既設管のベント部分にお
いても管内に形成されるライニング塗膜の厚さ
を略均一に形成することができるようになる。
(3) その他、補修対象の既設管系に脆弱部分があ
つても、ライニング樹脂の搬送気流は前記した
ように低圧のため、その脆弱部分を破損する不
都合がなく、また気流発生手段も比較的に小
型、小規摸にできるから、騒音の問題も併せて
解決できる等の効果が得られる。
As described in detail above, the present invention involves blowing and flowing the lining resin into an existing pipe in a state where it is diffused in a carrier gas airflow having a required flow rate to form a coating film on the inner surface of the pipe. The airflow pressure of the above-mentioned supported gas is 0.2Kg/
The repair is performed by setting a low pressure with a slight pressure difference of about cm2 to 0.6Kg/ cm2 , and using this low-pressure airflow to flow the above-mentioned lining resin into the pipe, forming a lining coating film on the inner surface of the pipe. Because of this, you can get the following effects: (1) First, the lining resin is conveyed in the pipe by a supported gas flow, which is a low-pressure air flow with a slight pressure difference from atmospheric pressure. Unlike cases where corrosion holes occur in the existing pipe to be repaired, there is no risk of enlarging the corrosion hole or damaging the pipe during the lining repair, and there is no risk of the lining being removed from the corrosion hole. Since the agent does not blow out of the tube, a resin lining film can be formed on the inner surface of the tube to reliably close the corrosion holes. (2) Furthermore, when the lining resin is conveyed into the pipe by a high-pressure air flow, the dynamic pressure is high, so at the bent part of the existing pipe, the lining layer on the side receiving the dynamic pressure becomes thinner, and the lining layer on the other side becomes unnecessarily thick. As mentioned above, the invention uses low-pressure airflow conveyance, so the dynamic pressure does not increase so much, and the thickness of the lining coating film formed inside the pipe can be made almost uniform even at the vent part of the existing pipe. . (3) In addition, even if there is a weak part in the existing pipe system to be repaired, the airflow carrying the lining resin is at a low pressure, so there is no problem of damaging the weak part, and the means for generating airflow is relatively low. Since it can be made small and compact, it also has the advantage of solving the problem of noise.
第１図は本発明に係る工法を具体化した一例の
概略構成図、第２図はライニング剤の粘度とミス
ト濃度との関係を示す図表、第３図はミスト濃度
とミストの到達距離の関係を示す図表、第４図は
到達距離によるミスト粒径分布の関係を示す図表
である。
１……コンプレツサ、２……ヘツダ、３……ガ
バナ、４……空気加熱機、５……ボイラ、６……
減圧弁、７……気流発生器、８……樹脂ライニン
グヘツド、９……バイパス路、１０……樹脂タン
ク、１１……圧力調整器、１２……電気ヒータ、
１３……安全弁、１４……流量計、１５……圧力
計、１６……温度計、１７……研磨剤投入器、１
８……バルブ、１９……回収器、２０……導管。
Figure 1 is a schematic configuration diagram of an example embodying the construction method according to the present invention, Figure 2 is a chart showing the relationship between the viscosity of the lining agent and the mist concentration, and Figure 3 is the relationship between the mist concentration and the distance traveled by the mist. FIG. 4 is a chart showing the relationship between the mist particle size distribution and the distance traveled. 1... Compressor, 2... Header, 3... Governor, 4... Air heater, 5... Boiler, 6...
Pressure reducing valve, 7... Airflow generator, 8... Resin lining head, 9... Bypass path, 10... Resin tank, 11... Pressure regulator, 12... Electric heater,
13... Safety valve, 14... Flow meter, 15... Pressure gauge, 16... Thermometer, 17... Abrasive injector, 1
8... Valve, 19... Recovery device, 20... Conduit.
Claims (1)
ガスの気流に拡散した状態で既設管の一端開口部
より管内に吹込み、当該管内を流動させて管内面
に塗膜を形成するに際し、 上記担持ガスの気流圧力を、既設管内において
大気圧に対し0.2Kg/cm2〜0.6Kg/cm2程度の僅かな圧
力差を有する低圧に設定し、この低圧の気流によ
り上記ライニング樹脂を管内に流動させて管内面
に樹脂のライニング塗膜を形成するように補修す
ることを特徴とする既設管の内面ライニング補修
工法。[Claims] 1. The lining resin is injected into the pipe from the opening at one end of the existing pipe in a state in which it is diffused in a carrier gas airflow having a required flow rate, and is caused to flow through the pipe to form a coating film on the inner surface of the pipe. When doing this, the airflow pressure of the supported gas is set to a low pressure with a slight pressure difference of about 0.2Kg/cm 2 to 0.6Kg/cm 2 from the atmospheric pressure in the existing pipe, and this low pressure airflow causes the lining resin to A method for repairing the inner lining of an existing pipe, which is characterized by repairing the inner surface of an existing pipe by causing it to flow into the pipe to form a resin lining film on the inner surface of the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7432182A JPS58189073A (en) | 1982-04-30 | 1982-04-30 | Method for repairing inner surface of existing pipe line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7432182A JPS58189073A (en) | 1982-04-30 | 1982-04-30 | Method for repairing inner surface of existing pipe line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58189073A JPS58189073A (en) | 1983-11-04 |
| JPS6124067B2 true JPS6124067B2 (en) | 1986-06-09 |
Family
ID=13543731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7432182A Granted JPS58189073A (en) | 1982-04-30 | 1982-04-30 | Method for repairing inner surface of existing pipe line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58189073A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168562A (en) * | 1984-02-10 | 1985-09-02 | Tokyo Gas Co Ltd | Application of lining to inner surface of pipe |
| JPH09117720A (en) * | 1995-10-27 | 1997-05-06 | Tokyo Gas Co Ltd | Method for lining inner face of existing pipeline |
| JPH09122585A (en) * | 1995-11-01 | 1997-05-13 | Tokyo Gas Co Ltd | Method for lining existing pipeline having deodorizing means with resin |
| ES2407586B1 (en) * | 2010-12-02 | 2014-04-29 | Jose Franco Lopez | METHOD FOR PRODUCING COLD, USING THE STRONGLY COMPRESSED AIR HEAT |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5431622A (en) * | 1977-08-16 | 1979-03-08 | Osaka Gas Co Ltd | Treatment of inside surface of conduit installed |
| JPS55142568A (en) * | 1979-04-23 | 1980-11-07 | Chiyuunichi Kuriinaa Kogyo Kk | Foundationing painting method of inner wall surface of pipe |
| JPS5665668A (en) * | 1979-11-01 | 1981-06-03 | Osaka Gas Co Ltd | Inner surface treatment of pipe |
-
1982
- 1982-04-30 JP JP7432182A patent/JPS58189073A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5431622A (en) * | 1977-08-16 | 1979-03-08 | Osaka Gas Co Ltd | Treatment of inside surface of conduit installed |
| JPS55142568A (en) * | 1979-04-23 | 1980-11-07 | Chiyuunichi Kuriinaa Kogyo Kk | Foundationing painting method of inner wall surface of pipe |
| JPS5665668A (en) * | 1979-11-01 | 1981-06-03 | Osaka Gas Co Ltd | Inner surface treatment of pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58189073A (en) | 1983-11-04 |
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