JP2530342B2 - Hard vinyl chloride lining method - Google Patents
Hard vinyl chloride lining methodInfo
- Publication number
- JP2530342B2 JP2530342B2 JP62249027A JP24902787A JP2530342B2 JP 2530342 B2 JP2530342 B2 JP 2530342B2 JP 62249027 A JP62249027 A JP 62249027A JP 24902787 A JP24902787 A JP 24902787A JP 2530342 B2 JP2530342 B2 JP 2530342B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- vinyl chloride
- existing pipe
- hard vinyl
- resin
- 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
Landscapes
- Sewage (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は硬質塩化ビニールライニング方法に関する。TECHNICAL FIELD The present invention relates to a method for lining a rigid vinyl chloride.
従来の技術 従来、既設管の管路を更新する方法としては、既設管
内に短管状の新管を順次継ぎ足しながら挿入するパイプ
・イン・パイプ工法がある。2. Description of the Related Art Conventionally, as a method of renewing the pipeline of an existing pipe, there is a pipe-in-pipe construction method in which new pipes having a short tubular shape are sequentially added into the existing pipe while being inserted.
発明が解決しようとする問題点 しかし、上記従来の構成によれば、新管の継手部の径
によって、既設管内に挿入可能な新管の径が決められる
こととなり、このため更新された管路が旧管路に較べて
一段狭いものとなる。したがって、既設管の口径が小さ
い場合には、旧管路に対する新管路の流路断面積の減少
率が大きくなり、大巾な通水性能の低下を来たす問題が
あった。However, according to the above-mentioned conventional configuration, the diameter of the new pipe that can be inserted into the existing pipe is determined by the diameter of the joint portion of the new pipe. Is one step narrower than the old pipeline. Therefore, when the diameter of the existing pipe is small, the reduction rate of the flow passage cross-sectional area of the new pipe with respect to the old pipe is large, and there is a problem that the water flow performance is greatly reduced.
本発明は上記問題点を解決するもので、小口径の既設
管に対して通水性能を低下させることなく、管路の更新
を行なえるようにすることを目的とする。The present invention solves the above-mentioned problems, and an object of the present invention is to make it possible to renew a pipeline without reducing the water flow performance of an existing pipe having a small diameter.
問題点を解決するための手段 上記問題点を解決するため、本発明は、既設管におけ
る管路の更新に際し既設管内に挿入配置された樹脂供給
管に、軟化状態の硬質塩化ビニール樹脂を基端側から押
出し機によって供給し、この硬質塩化ビニール樹脂を樹
脂供給管の先端に設けたライニング成形ガイドから既設
管の内壁に向けて環状に噴出させるとともに、樹脂供給
管を徐々に引き抜いてライニング成形ガイドを管軸心方
向に移動させることにより、硬質塩化ビニール樹脂を筒
状に既設管の内面に付着させて配置し、筒状に配置され
た硬質塩化ビニール樹脂を、ライニング成形ガイドに伴
なって移動させられる冷却ピグにより冷却して硬化させ
る構成としたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a resin supply pipe inserted into the existing pipe at the time of renewing the pipeline in the existing pipe, and a hard vinyl chloride resin in a softened state is used as a base end. Supplied by an extruder from the side, and this hard vinyl chloride resin is ejected annularly from the lining molding guide provided at the tip of the resin supply pipe toward the inner wall of the existing pipe, and the resin supply pipe is gradually pulled out to guide the lining molding. By moving in the axial direction of the pipe, the hard vinyl chloride resin is placed in a cylindrical shape on the inner surface of the existing pipe, and the hard vinyl chloride resin placed in the tubular shape is moved along with the lining molding guide. It is configured such that it is cooled by a cooling pig to be cured and cured.
作用 上記構成において、硬質塩化ビニール樹脂は既設管の
内壁に付着して配置されるので、旧管路に対する新管路
の流路断面積の減少量が硬質塩化ビニール樹脂の肉厚に
相応する必要最小限のものとなって大巾な通水性能の低
下を生じさせることなく管路が更新されることになる。Function In the above configuration, since the hard vinyl chloride resin is placed by adhering to the inner wall of the existing pipe, the amount of decrease in the flow passage cross-sectional area of the new pipe with respect to the old pipe needs to correspond to the thickness of the hard vinyl chloride resin. The pipeline will be renewed without causing a significant reduction in water flow performance.
実施例 以下、本発明の一実施例を図面に基づいて説明する。
第１図において、立坑１は地中２に埋設された既設管３
に対応して形成されており、この立坑１内に位置する既
設管３の途中を切断して開口3aが形成されている。そし
て、この既設管３内に樹脂供給管４が挿入配置されてお
り、この樹脂供給管４は途中適所に設けたローラ５によ
り既設管３に対して摺動自在に支持されている。そし
て、樹脂供給管４は複数の短管を可撓性のある継手部で
継ぎ足して形成されて既設管３の屈曲に順応可能に成さ
れており、樹脂供給管４の基端側は硬質塩化ビニール樹
脂６を供給する押出し機７に接続され、先端側にはライ
ニング成形ガイド８が設けられている。そして、押出し
機７は、立坑１の開口近傍に位置して配置されるととも
に、既設管３の軸心方向に設けられたレール９上を車輪
10を介して移動自在に成されており、上部には原料貯蔵
用タンク11を備えている。また、レール９は立坑１内に
突出して設けられた張出台12によって先端を支持されて
いる。そして、樹脂供給管４の周囲には保温用のヒータ
13が必要に応じて設けられるとともに、既設管３内に挿
入配置され樹脂供給管４内には搬送用のスクリュー14が
配置されている。このクリュー14の回転軸は、既設管３
外において樹脂供給管４の外に突出されて、駆動モータ
15に連動連結されている。そして、ライニング成形ガイ
ド８は円錐状に拡径されており、樹脂供給管４から送り
出されてくる硬質塩化ビニール樹脂６を既設管３の内壁
に向けて環状に噴出させるように形成されている。ま
た、ライニング成形ガイド８は中心付近を金属にて形成
され、既設管３の内壁に近い周縁部はゴム等の弾性体に
より形成されて、既設管３の途中におけるへん平や段違
いを吸収可能なように成されている。そして、ライニン
グ成形ガイド８の前方には冷却ピグ16が配置されてお
り、この冷却ピグ16は既設管３の内壁に沿った円形の胴
部を有し、胴部に接触する硬質塩化ビニール樹脂６を既
設管３の内面に押圧するとともに冷却して硬化かつ硬質
塩化ビニール樹脂６の内面を平滑にさせるように形成さ
れている。そして、冷却ピグ16に冷却水を供給する給水
管17と、冷却水を排水する排出管18とが樹脂供給管４に
沿って配置されており、給水管17および排出管18はとも
に複数の短管を可撓性のある継手部で継ぎ足して形成さ
れて既設管３の屈曲に順応可能に形成されている。そし
て、樹脂供給管４と給水管17と排水管18の各短管は立坑
１の寸法に応じた長さに形成されており、立坑１内にお
いて短管と短管との接合および離脱が可能なように成さ
れている。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
In Fig. 1, a vertical shaft 1 is an existing pipe 3 buried in the underground 2.
The opening 3a is formed by cutting the middle of the existing pipe 3 located in the vertical shaft 1. A resin supply pipe 4 is inserted and arranged in the existing pipe 3, and the resin supply pipe 4 is slidably supported on the existing pipe 3 by a roller 5 provided at an appropriate place on the way. The resin supply pipe 4 is formed by adding a plurality of short pipes with a flexible joint portion so as to be adaptable to the bending of the existing pipe 3, and the base end side of the resin supply pipe 4 is hard chloride. It is connected to an extruder 7 that supplies the vinyl resin 6, and a lining molding guide 8 is provided on the tip side. The extruder 7 is disposed near the opening of the vertical shaft 1 and has wheels on rails 9 provided in the axial direction of the existing pipe 3.
It is configured to be movable via 10, and a raw material storage tank 11 is provided on the upper part. The tip of the rail 9 is supported by an overhanging base 12 provided so as to project into the vertical shaft 1. A heater for keeping heat is provided around the resin supply pipe 4.
13 is provided as necessary, and a screw 14 for transportation is arranged in the resin supply pipe 4 inserted and arranged in the existing pipe 3. The axis of rotation of this clew 14 is the existing pipe 3
The drive motor is projected to the outside of the resin supply pipe 4 outside.
It is interlockingly connected to 15. The lining molding guide 8 has a conical diameter and is formed so as to eject the hard vinyl chloride resin 6 delivered from the resin supply pipe 4 annularly toward the inner wall of the existing pipe 3. Further, the lining molding guide 8 is formed of metal in the vicinity of the center, and the peripheral portion near the inner wall of the existing pipe 3 is formed of an elastic body such as rubber so that flatness and step differences in the middle of the existing pipe 3 can be absorbed. It is done like this. A cooling pig 16 is arranged in front of the lining molding guide 8. The cooling pig 16 has a circular body along the inner wall of the existing pipe 3, and the hard vinyl chloride resin 6 which contacts the body 6 Is pressed against the inner surface of the existing pipe 3 and is cooled to be hardened, and the inner surface of the hard vinyl chloride resin 6 is smoothed. A water supply pipe 17 for supplying cooling water to the cooling pig 16 and a discharge pipe 18 for draining the cooling water are arranged along the resin supply pipe 4, and both the water supply pipe 17 and the discharge pipe 18 have a plurality of short pipes. The pipe is formed by adding a flexible joint portion so as to be adaptable to the bending of the existing pipe 3. Each short pipe of the resin supply pipe 4, the water supply pipe 17, and the drain pipe 18 is formed to have a length corresponding to the size of the vertical shaft 1, and the short pipe and the short pipe can be joined and separated in the vertical shaft 1. It is made like this.
以下、上記構成における作用について説明する。ま
ず、冷却ピグ16、ライニング成形ガイド８および樹脂供
給管４を挿入する前に、既設管３の内面を従来の一般的
な手法によってクリーニングする。次に、冷却ピグ16を
既設管３内に配置するとともに、給水管17および排出管
18を、その短管を継ぎ足すことにより延伸させて冷却ピ
グ16を既設管３内の所定位置まで挿入する。そして、冷
却ピグ16の挿入と合わせてライニング成形ガイド８を、
樹脂供給４の延伸によって既設管３内に挿入する。この
状態において、冷却ピグ16に冷却水を供給源（図示せ
ず）から給水管17を介して供給するとともに、押出し機
７より軟化状態の硬質塩化ビニール樹脂６を樹脂供給管
４を通してライニング成形ガイド８に供給する。この
時、樹脂供給管４内の硬質塩化ビニール樹脂６はヒータ
13から供給される熱によって保温され、軟化状態を維持
されるとともに、スクリュー14の回転によってライニン
グ成形ガイド８に向けて送り出される。そして、ライニ
ング成形ガイド８ら既設管３の内壁に向けて硬質塩化ビ
ニール樹脂６を環状に噴出させるとともに、押出し機７
の移動により樹脂供給管４を既設管３から引き抜いてラ
イニング成形ガイド８を開口3aに向けて移動させる。そ
して、このことによって、既設管３の内壁に沿って硬質
塩化ビニー樹脂６を筒状に配置し、この筒状に配置され
た硬質塩化ビニール樹脂６を、ライニング成形ガイド８
に伴なって移動させる冷却ピグ16により冷却し、硬化さ
せて新管6aを形成する。そして、樹脂供給管４、給水管
17および排水管18は、短管分を引き抜くごとに各短管を
取りはずされ、これに伴なって押出し機７は反復移動さ
せられる。そして、以上の動作によって既設管３内に形
成される新管6aは継手部を有さず、しかも既設管３の内
壁に沿って形成されるので、旧管路に対する新管路の流
路断面積の減少量が新管6aの管肉厚に相当する必要最小
限のものとなって大巾な通水性の低下を生じさせること
なく管路が更新されることとなる。The operation of the above configuration will be described below. First, before inserting the cooling pig 16, the lining molding guide 8 and the resin supply pipe 4, the inner surface of the existing pipe 3 is cleaned by a conventional general method. Next, the cooling pig 16 is arranged in the existing pipe 3, and the water supply pipe 17 and the discharge pipe are arranged.
18 is extended by adding the short pipe, and the cooling pig 16 is inserted to a predetermined position in the existing pipe 3. Then, the lining molding guide 8 is inserted together with the insertion of the cooling pig 16.
It is inserted into the existing pipe 3 by stretching the resin supply 4. In this state, cooling water is supplied to the cooling pig 16 from a supply source (not shown) through the water supply pipe 17, and the hard vinyl chloride resin 6 in the softened state is extruded from the extruder 7 through the resin supply pipe 4 and the lining molding guide. Supply to 8. At this time, the hard vinyl chloride resin 6 in the resin supply pipe 4 is heated by the heater.
It is kept warm by the heat supplied from 13, is kept in a softened state, and is fed toward the lining molding guide 8 by the rotation of the screw 14. Then, the hard vinyl chloride resin 6 is ejected annularly from the lining molding guide 8 toward the inner wall of the existing pipe 3, and the extruder 7
Is moved to pull out the resin supply pipe 4 from the existing pipe 3 and move the lining molding guide 8 toward the opening 3a. As a result, the hard vinyl chloride resin 6 is arranged in a tubular shape along the inner wall of the existing pipe 3, and the hard vinyl chloride resin 6 arranged in the tubular shape is used as the lining molding guide 8
It is cooled by a cooling pig 16 that is moved along with and is cured to form a new pipe 6a. And resin supply pipe 4, water supply pipe
Each of the short pipes 17 and the drain pipe 18 is removed every time the short pipe portion is pulled out, and the extruder 7 is repeatedly moved accordingly. The new pipe 6a formed in the existing pipe 3 by the above operation does not have a joint part and is formed along the inner wall of the existing pipe 3, so that the flow path of the new pipe is disconnected from the old pipe. The area reduction amount becomes the minimum necessary amount corresponding to the wall thickness of the new pipe 6a, and the pipe line is renewed without causing a large decrease in water permeability.
発明の効果 以上述べたごとく、本発明によれば、既設管の管路を
硬質塩化ビニール樹脂によって大巾な通水性の低下を生
じさせることなく更新することが出来る。EFFECTS OF THE INVENTION As described above, according to the present invention, the pipeline of the existing pipe can be renewed by the hard vinyl chloride resin without causing a large decrease in water permeability.
【図面の簡単な説明】 第１図は本発明の一実施例を示す全体構成図である。 ３……既設管、４……樹脂供給管、６……硬質塩化ビニ
ール樹脂、７……押出し機、16……冷却ピグ。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. 3 ... Existing pipe, 4 ... Resin supply pipe, 6 ... Hard vinyl chloride resin, 7 ... Extruder, 16 ... Cooling pig.
Claims (1)
内に挿入配置された樹脂供給管に、軟化状態の硬質塩化
ビニール樹脂を基端側から押出し機によって供給し、こ
の硬質塩化ビニール樹脂を樹脂供給管の先端に設けたラ
イニング成形ガイドから既設管の内壁に向けて環状に噴
出させるとともに、樹脂供給管を徐々に引き抜いてライ
ニング成形ガイドを管軸心方向に移動させることによ
り、硬質塩化ビニール樹脂を筒状に既設管の内面に付着
させて配置し、筒状に配置された硬質塩化ビニール樹脂
を、ライニング成形ガイドに伴なって移動させられる冷
却ピグにより冷却して硬化させることを特徴とする硬質
塩化ビニールライニング方法。1. When renewing a pipeline in an existing pipe, a soft vinyl chloride resin is supplied from a proximal end side to a resin supply pipe inserted and arranged in the existing pipe by an extruder, and the hard vinyl chloride resin is supplied. The lining molding guide provided at the tip of the resin supply pipe is ejected annularly toward the inner wall of the existing pipe, and the resin supply pipe is gradually pulled out to move the lining molding guide in the axial direction of the pipe. The resin is arranged in a cylindrical shape by adhering to the inner surface of the existing pipe, and the hard vinyl chloride resin arranged in a cylindrical shape is cooled and cured by a cooling pig that is moved along with the lining molding guide. Hard vinyl chloride lining method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249027A JP2530342B2 (en) | 1987-09-30 | 1987-09-30 | Hard vinyl chloride lining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249027A JP2530342B2 (en) | 1987-09-30 | 1987-09-30 | Hard vinyl chloride lining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6490069A JPS6490069A (en) | 1989-04-05 |
| JP2530342B2 true JP2530342B2 (en) | 1996-09-04 |
Family
ID=17186916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62249027A Expired - Fee Related JP2530342B2 (en) | 1987-09-30 | 1987-09-30 | Hard vinyl chloride lining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2530342B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2425744B (en) * | 2005-05-03 | 2007-04-18 | Fmc Technologies | Internal coatings for pipes |
| CN113522608A (en) * | 2021-07-08 | 2021-10-22 | 湖南天卓管业有限公司 | Intelligent epoxy powder anti-corrosion spiral steel pipe production equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476642A (en) * | 1977-11-30 | 1979-06-19 | Osaka Gas Co Ltd | Lining of inner surface of pipe |
| JPS61103586A (en) * | 1984-10-25 | 1986-05-22 | Osaka Gas Co Ltd | Method for lining inner surface of pipe |
| JPS62171771A (en) * | 1986-01-22 | 1987-07-28 | Kubota Ltd | Device for lining inner surface of existing pipe |
-
1987
- 1987-09-30 JP JP62249027A patent/JP2530342B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6490069A (en) | 1989-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |