JPH08247378A - Repairing method for plastic pipe - Google Patents
Repairing method for plastic pipeInfo
- Publication number
- JPH08247378A JPH08247378A JP7050866A JP5086695A JPH08247378A JP H08247378 A JPH08247378 A JP H08247378A JP 7050866 A JP7050866 A JP 7050866A JP 5086695 A JP5086695 A JP 5086695A JP H08247378 A JPH08247378 A JP H08247378A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic alloy
- alloy heater
- repairing
- repair member
- plastic pipe
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はプラスチック管の補修
方法に関し、特にたとえばポリエチレンやポリプロピレ
ン等のようなポリオレフィン系樹脂からなるプラスチッ
ク管に傷が生じた場合にこれを補修する、プラスチック
管の補修方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a plastic pipe, and more particularly to a method for repairing a plastic pipe which is repaired when a plastic pipe made of polyolefin resin such as polyethylene or polypropylene is damaged. Regarding
【０００２】[0002]
【従来の技術】この種の従来のプラスチック管の補修方
法の一例が、国際公開ＷＯ９２／１５１８２号に開示さ
れている。この従来技術で用いられる補修部材１は、図
７に示すように、補修しようとする管２の外面に沿って
湾曲されたポリオレフィン系樹脂からなる略板状の本体
３を含み、本体３の内面略中央部には、磁性合金ヒータ
４が設けられる。そして、管２の補修時には、管２の傷
５を生じた部分に補修部材１を載置し、図示しない固定
治具を用いて管２上に補修部材１を固定する。そして、
図８に示すように、補修部材１の周囲にワークコイル６
を配置してワークコイル６から補修部材１の磁性合金ヒ
ータ４に誘導電流を付与する。すると、磁性合金ヒータ
４が表皮効果によって急激に発熱し、磁性合金ヒータ４
のキュリー温度近傍で管２と補修部材１とが融着され
る。2. Description of the Related Art An example of a conventional method for repairing a plastic pipe of this type is disclosed in International Publication WO92 / 15182. As shown in FIG. 7, a repair member 1 used in this conventional technique includes a substantially plate-shaped main body 3 made of a polyolefin resin that is curved along the outer surface of a pipe 2 to be repaired, and an inner surface of the main body 3 is formed. A magnetic alloy heater 4 is provided at a substantially central portion. Then, at the time of repairing the pipe 2, the repair member 1 is placed on the portion of the pipe 2 where the scratch 5 has occurred, and the repair member 1 is fixed onto the pipe 2 using a fixing jig (not shown). And
As shown in FIG. 8, the work coil 6 is provided around the repair member 1.
And the induction current is applied from the work coil 6 to the magnetic alloy heater 4 of the repair member 1. Then, the magnetic alloy heater 4 rapidly generates heat due to the skin effect, and the magnetic alloy heater 4
The tube 2 and the repair member 1 are fusion-bonded to each other in the vicinity of the Curie temperature.
【０００３】[0003]
【発明が解決しようとする課題】従来技術では、磁性合
金ヒータ４のキュリー温度を最適融着温度に設定してお
くことによって、管２と補修部材１との接合面を最適融
着温度近傍で確実に融着できるという利点を有するもの
の、補修部材１が予め所定の大きさに形成されるので、
補修部材１からはみ出すような大きな傷には適用でき
ず、また、小さな傷の場合には補修部材１の無駄が多く
なるという問題点があった。In the prior art, by setting the Curie temperature of the magnetic alloy heater 4 to the optimum fusion temperature, the joint surface between the pipe 2 and the repair member 1 is kept near the optimum fusion temperature. Although it has an advantage that it can be reliably fused, the repair member 1 is formed in a predetermined size in advance,
There is a problem that it cannot be applied to a large scratch that protrudes from the repair member 1, and the repair member 1 is wasted in the case of a small scratch.
【０００４】それゆえに、この発明の主たる目的は、あ
らゆる大きさの傷に無駄なく適用できる、プラスチック
管の補修方法を提供することである。Therefore, a main object of the present invention is to provide a method for repairing a plastic pipe, which can be applied to scratches of any size without waste.
【０００５】[0005]
【課題を解決するための手段】第１の発明は、傷を生じ
たプラスチック管を補修する方法であって、(a) 傷を覆
うことのできる所定の大きさを有するかつプラスチック
管の外面に沿うように湾曲された板状の補修部材を準備
し、(b) 補修部材に適合する大きさの磁性合金ヒータを
準備し、(c) プラスチック管の傷を生じた部分に磁性合
金ヒータおよび補修部材をこの順で載置し、(d) プラス
チック管上に磁性合金ヒータおよび補修部材を固定し、
(e) 磁性合金ヒータに誘導電流を付与する、プラスチッ
ク管の補修方法である。A first aspect of the present invention is a method for repairing a plastic pipe having a scratch, which is (a) having a predetermined size capable of covering the scratch and having an outer surface of the plastic pipe. Prepare a plate-shaped repair member that is curved along the line, (b) Prepare a magnetic alloy heater of a size that fits the repair member, and (c) Magnetic alloy heater and repair the scratched part of the plastic pipe. Place the members in this order, (d) fix the magnetic alloy heater and repair member on the plastic tube,
(e) A method of repairing a plastic tube by applying an induced current to the magnetic alloy heater.
【０００６】第２の発明は、傷を生じたプラスチック管
を補修する方法であって、(a) その内面近傍に磁性合金
ヒータが設けられた補修部材を準備し、(b) 傷を覆うこ
とのできる所定の大きさに補修部材を切断し、(c) プラ
スチック管の傷を生じた部分に所定の大きさに切断した
補修部材を載置し、(d) プラスチック管上に補修部材を
固定し、(e) 磁性合金ヒータに誘導電流を付与する、プ
ラスチック管の補修方法である。A second aspect of the present invention is a method of repairing a scratched plastic pipe, wherein (a) a repair member provided with a magnetic alloy heater near its inner surface is prepared, and (b) the scratch is covered. Cut the repair member into a predetermined size that can be used, (c) Place the cut repair member in the predetermined size on the damaged part of the plastic pipe, and (d) Fix the repair member on the plastic pipe. Then, (e) a method of repairing a plastic tube, in which an induction current is applied to the magnetic alloy heater.
【０００７】[0007]
【作用】第１の発明では、管に生じた傷を覆うことので
きる所定の大きさの補修部材と磁性合金ヒータとを個別
に準備し、管の傷を生じた部分に磁性合金ヒータおよび
補修部材をこの順で載置して固定し、磁性合金ヒータに
ワークコイルから誘導電流を付与する。すると、表皮効
果によって磁性合金ヒータが急激に発熱し、キュリー温
度近傍で管と補修部材とが融着される。In the first aspect of the present invention, a repair member of a predetermined size capable of covering a scratch on the tube and a magnetic alloy heater are individually prepared, and the magnetic alloy heater and the repair are provided on the damaged part of the tube. The members are placed and fixed in this order, and an induction current is applied to the magnetic alloy heater from the work coil. Then, the skin effect causes the magnetic alloy heater to rapidly generate heat, and the tube and the repair member are fused together near the Curie temperature.
【０００８】第２の発明では、その内面近傍に磁性合金
ヒータが設けられた補修部材を管に生じた傷を覆うこと
のできる所定の大きさに切断し、傷を生じた部分に切断
した補修部材を載置して固定し、磁性合金ヒータにワー
クコイルから誘導電流を付与する。According to the second aspect of the invention, the repair member provided with the magnetic alloy heater in the vicinity of the inner surface thereof is cut into a predetermined size capable of covering the scratch on the tube, and the repaired portion is cut into the damaged portion. The member is placed and fixed, and an induction current is applied to the magnetic alloy heater from the work coil.
【０００９】[0009]
【発明の効果】第１および第２の発明によれば、管に生
じた傷の大きさに応じて磁性合金ヒータおよび補修部材
の大きさを決めることができるので、あらゆる大きさの
傷に無駄なく適用できる。また、第１の発明によれば、
管の切れ端等を補修部材として利用できるので、補修コ
ストを低減できる。According to the first and second aspects of the present invention, the size of the magnetic alloy heater and the repair member can be determined according to the size of the damage on the tube. Can be applied without. According to the first invention,
Since the cut end of the pipe can be used as a repair member, repair cost can be reduced.
【００１０】この発明の上述の目的，その他の目的，特
徴および利点は、図面を参照して行う以下の実施例の詳
細な説明から一層明らかとなろう。The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments below with reference to the drawings.
【００１１】[0011]
【実施例】この実施例のプラスチック管の補修方法は、
図１に示すように、ポリエチレンやポリプロピレン等の
ようなポリオレフィン系樹脂からなるプラスチック管１
０に生じた傷１２を磁性合金ヒータ１４および補修部材
１６を用いて補修するのに用いられるものである。ここ
で、磁性合金ヒータ１４としては、所定のキュリー温度
を有する磁性合金線１４ａによって網状に編まれたもの
が用いられ、補修部材１６としては、管１０と同じポリ
オレフィン系樹脂からなり、かつその内面がプラスチッ
ク管１０の外面に沿うように湾曲された板状のものが用
いられる。補修部材１６の内径を管１０の外径よりもや
や小さく設定すると、補修部材１６の内面をプラスチッ
ク管１０の外面に容易に沿わせることができる。EXAMPLE A method for repairing a plastic pipe of this example is as follows.
As shown in FIG. 1, a plastic pipe 1 made of a polyolefin resin such as polyethylene or polypropylene.
It is used for repairing the scratch 12 generated at 0 using the magnetic alloy heater 14 and the repair member 16. Here, as the magnetic alloy heater 14, a magnetic alloy wire 14a having a predetermined Curie temperature, which is woven into a net shape, is used. As the repair member 16, the repair member 16 is made of the same polyolefin resin as that of the pipe 10 and has an inner surface thereof. A plate-shaped member that is curved so as to follow the outer surface of the plastic tube 10 is used. When the inner diameter of the repair member 16 is set to be slightly smaller than the outer diameter of the pipe 10, the inner surface of the repair member 16 can easily follow the outer surface of the plastic pipe 10.
【００１２】管１０の補修時には、まず、図２および図
３に示すような長尺の磁性合金ヒータ１４および補修部
材１６を現場に準備する。そして、管１０に生じた傷１
２（図１）を覆うことのできる所定の大きさに補修部材
１６（図３）を切断し、補修部材１６に適合する大きさ
に磁性合金ヒータ１４（図２）を切断する。そして、切
断した磁性合金ヒータ１４および補修部材１６をこの順
で管１０の傷１２を生じた部分に載置し、図４に示すよ
うに、プラスチックバンド等のような固定治具１８を用
いて管１０上にこれらを固定する。続いて、図５に示す
ように、磁性合金ヒータ１４および補修部材１６の周囲
にワークコイル２０を配置し、高周波電源２２からワー
クコイル２０に高周波電力を付与する。すると、管１０
と補修部材１６とによって挟まれた磁性合金ヒータ１４
に電磁誘導によって高周波電流が付与され、表皮効果に
よって磁性合金ヒータ１４が急激に発熱し、キュリー温
度近傍で管１０の外面と補修部材１６の内面とが融着さ
れる。なお、ワークコイル２０としては、たとえば特願
平５−７３４０７号に開示されたもの等が用いられ得
る。When repairing the tube 10, first, a long magnetic alloy heater 14 and a repair member 16 as shown in FIGS. 2 and 3 are prepared on site. Then, the scratch 1 generated in the tube 10
The repair member 16 (FIG. 3) is cut into a predetermined size capable of covering the 2 (FIG. 1), and the magnetic alloy heater 14 (FIG. 2) is cut into a size suitable for the repair member 16. Then, the cut magnetic alloy heater 14 and repaired member 16 are placed in this order on the portion of the tube 10 where the scratch 12 has occurred, and as shown in FIG. 4, a fixing jig 18 such as a plastic band is used. Fix these on the tube 10. Subsequently, as shown in FIG. 5, the work coil 20 is arranged around the magnetic alloy heater 14 and the repair member 16, and high frequency power is applied from the high frequency power supply 22 to the work coil 20. Then tube 10
Magnetic alloy heater 14 sandwiched by a repair member 16 and
A high-frequency current is applied to the magnetic alloy heater 14 due to the electromagnetic induction, the magnetic alloy heater 14 rapidly generates heat due to the skin effect, and the outer surface of the tube 10 and the inner surface of the repair member 16 are fused near the Curie temperature. As the work coil 20, for example, one disclosed in Japanese Patent Application No. 5-73407 may be used.
【００１３】そして、所定時間経過後、高周波電源２２
をオフし、ワークコイル２０を取り外し、補修部（融着
部）を冷却する。この実施例によれば、長尺の磁性合金
ヒータ１４および補修部材１６を傷１２の大きさに応じ
た所定の大きさに切断して用いるようにしているので、
あらゆる大きさの傷１２に無駄なく適用できる。After a lapse of a predetermined time, the high frequency power source 22
Is turned off, the work coil 20 is removed, and the repair portion (fusion portion) is cooled. According to this embodiment, the long magnetic alloy heater 14 and the repair member 16 are cut into a predetermined size according to the size of the scratch 12 before use.
It can be applied to scratches 12 of any size without waste.
【００１４】また、補修部材１６の内面に磁性合金ヒー
タ１４を予め設けておく必要がないので、補修部材１６
の製造工程を簡素化できる。なお、上述の実施例では、
所定形状を有する長尺の補修部材１６を準備し、これを
所定の大きさに切断して用いるようにしているが、管の
切れ端等のような既存のものをそのままあるいは所定の
大きさに切断して補修部材１６として用いてもよい。こ
のように既存のものを用いると、補修コストを大幅に低
減できる。Further, since it is not necessary to previously provide the magnetic alloy heater 14 on the inner surface of the repair member 16, the repair member 16
The manufacturing process of can be simplified. In the above embodiment,
Although a long repair member 16 having a predetermined shape is prepared and cut into a predetermined size for use, an existing one such as a piece of pipe is cut as it is or cut into a predetermined size. Alternatively, the repair member 16 may be used. By using the existing one as described above, the repair cost can be significantly reduced.
【００１５】他の実施例のプラスチック管の補修方法で
は、まず、その内面に磁性合金ヒータ１４が装着された
図６に示すような長尺の補修部材１６′を現場に準備
し、これを傷１２（図１）を覆うことのできる所定の大
きさに切断する。そして、この切断した補修部材１６′
を管１０の傷１２を生じた部分に載置し、これを固定治
具１８（図４）を用いて管１０上に固定する。その後、
ワークコイル２０（図５）から磁性合金ヒータ１４（図
６）に高周波電流を付与して、管１０と補修部材１６′
とを融着する。In the method of repairing a plastic pipe of another embodiment, first, a long repair member 16 'having a magnetic alloy heater 14 mounted on its inner surface as shown in FIG. 6 is prepared on site and scratched. Cut to size to cover 12 (FIG. 1). Then, the cut repair member 16 '
Is placed on the portion of the tube 10 where the scratch 12 has occurred, and this is fixed on the tube 10 using a fixing jig 18 (FIG. 4). afterwards,
A high-frequency current is applied from the work coil 20 (FIG. 5) to the magnetic alloy heater 14 (FIG. 6), and the tube 10 and the repair member 16 'are provided.
Fuse and.
【００１６】この実施例においても、補修部材１６′を
任意の大きさに切断して用いるようにしているので、あ
らゆる大きさの傷１２に無駄なく適用できる。また、磁
性合金ヒータ１４と補修部材１６′とを同時に切断する
ことができるので、これらを個別に切断する先の実施例
に比べて現場での作業性を向上できる。Also in this embodiment, since the repair member 16 'is cut into an arbitrary size and used, it can be applied to the scratches 12 of any size without waste. Further, since the magnetic alloy heater 14 and the repair member 16 'can be cut at the same time, workability in the field can be improved as compared with the previous embodiment in which these are cut individually.
【図１】この発明の一実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】図１実施例で用いられる磁性合金ヒータを示す
斜視図である。FIG. 2 is a perspective view showing a magnetic alloy heater used in the embodiment of FIG.
【図３】図１実施例で用いられる補修部材を示す斜視図
である。FIG. 3 is a perspective view showing a repair member used in the embodiment of FIG.
【図４】管に磁性合金ヒータおよび補修部材を固定した
状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which a magnetic alloy heater and a repair member are fixed to a tube.
【図５】ワークコイルから磁性合金ヒータに誘導電流を
付与する状態を示す斜視図である。FIG. 5 is a perspective view showing a state in which an induction current is applied from the work coil to the magnetic alloy heater.
【図６】この発明の他の実施例で用いられる補修部材を
示す斜視図である。FIG. 6 is a perspective view showing a repair member used in another embodiment of the present invention.
【図７】従来技術を示す斜視図である。FIG. 7 is a perspective view showing a conventional technique.
【図８】従来技術において磁性合金ヒータに誘導電流を
付与する状態を示す斜視図である。FIG. 8 is a perspective view showing a state in which an induction current is applied to a magnetic alloy heater in the conventional technique.
１０ …管 １２ …傷 １４ …磁性合金ヒータ １６，１６′ …補修部材 ２０ …ワークコイル 10 ... Tube 12 ... Scratch 14 ... Magnetic alloy heater 16, 16 '... Repair member 20 ... Work coil
───────────────────────────────────────────────────── フロントページの続き (72)発明者 京免 純輔 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 坂口 真幸 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 倍 秀樹 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 多胡 卓 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 永松 茂儀 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 後藤 雄一郎 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junsuke Kyoen 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Vinyl Pipe Factory, Inc. (72) Inventor, Masayuki 64, Ishizukitamachi Sakai City, Osaka Kubota Vinyl Pipe Factory, Ltd. (72) Inventor Hideki Baiki 64, Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Vinyl Pipe Factory, Inc. (72) Inventor Taku Taka, 64, Ishizukitamachi, Sakai City, Osaka Prefecture (72) Inventor Shigeru Nagamatsu No. 64, Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Vinyl Pipe Co., Ltd. (72) Inventor, Yuichiro Goto 64, Ishizukitamachi, Sakai City, Osaka Kubota Vinyl Pipe Factory, Ltd.
Claims (2)
であって、 (a) 前記傷を覆うことのできる所定の大きさを有するか
つ前記プラスチック管の外面に沿うように湾曲された板
状の補修部材を準備し、 (b) 前記補修部材に適合する大きさの磁性合金ヒータを
準備し、 (c) 前記プラスチック管の前記傷を生じた部分に前記磁
性合金ヒータおよび前記補修部材をこの順で載置し、 (d) 前記プラスチック管上に前記磁性合金ヒータおよび
前記補修部材を固定し、 (e) 前記磁性合金ヒータに誘導電流を付与する、プラス
チック管の補修方法。1. A method of repairing a scratched plastic pipe, comprising: (a) a plate-like member having a predetermined size capable of covering the scratch and curved along an outer surface of the plastic pipe. (B) prepare a magnetic alloy heater having a size suitable for the repair member, and (c) provide the magnetic alloy heater and the repair member in the scratched portion of the plastic pipe. A method for repairing a plastic pipe, which is mounted in order, (d) fixing the magnetic alloy heater and the repair member on the plastic pipe, and (e) applying an induced current to the magnetic alloy heater.
であって、 (a) その内面近傍に磁性合金ヒータが設けられた補修部
材を準備し、 (b) 前記傷を覆うことのできる所定の大きさに前記補修
部材を切断し、 (c) 前記プラスチック管の前記傷を生じた部分に所定の
大きさに切断した前記補修部材を載置し、 (d) 前記プラスチック管上に前記補修部材を固定し、 (e) 前記磁性合金ヒータに誘導電流を付与する、プラス
チック管の補修方法。2. A method of repairing a scratched plastic pipe, comprising: (a) preparing a repairing member provided with a magnetic alloy heater near its inner surface; and (b) a predetermined part capable of covering the scratch. The repair member is cut to a size of (c), the repair member cut to a predetermined size is placed on the scratched portion of the plastic pipe, and (d) the repair member is mounted on the plastic pipe. A method of repairing a plastic tube, which comprises fixing a member, and (e) applying an induced current to the magnetic alloy heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7050866A JPH08247378A (en) | 1995-03-10 | 1995-03-10 | Repairing method for plastic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7050866A JPH08247378A (en) | 1995-03-10 | 1995-03-10 | Repairing method for plastic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08247378A true JPH08247378A (en) | 1996-09-27 |
Family
ID=12870656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7050866A Pending JPH08247378A (en) | 1995-03-10 | 1995-03-10 | Repairing method for plastic pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08247378A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001044711A1 (en) * | 1999-12-16 | 2001-06-21 | Baofeng Jin | Magnetically pressed leak cover device |
| US8507832B2 (en) * | 2004-08-20 | 2013-08-13 | Gaz De France | Method of repairing in situ a pipe or tank of thermo-fusible material, and device for implementing this method |
| WO2015087905A1 (en) * | 2013-12-11 | 2015-06-18 | 株式会社Ａｌｆａ | Repairing method |
-
1995
- 1995-03-10 JP JP7050866A patent/JPH08247378A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001044711A1 (en) * | 1999-12-16 | 2001-06-21 | Baofeng Jin | Magnetically pressed leak cover device |
| US8507832B2 (en) * | 2004-08-20 | 2013-08-13 | Gaz De France | Method of repairing in situ a pipe or tank of thermo-fusible material, and device for implementing this method |
| WO2015087905A1 (en) * | 2013-12-11 | 2015-06-18 | 株式会社Ａｌｆａ | Repairing method |
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