JPS62113984A - Double pipe made of plastic - Google Patents
Double pipe made of plasticInfo
- Publication number
- JPS62113984A JPS62113984A JP25355985A JP25355985A JPS62113984A JP S62113984 A JPS62113984 A JP S62113984A JP 25355985 A JP25355985 A JP 25355985A JP 25355985 A JP25355985 A JP 25355985A JP S62113984 A JPS62113984 A JP S62113984A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- outer tube
- inner tube
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば、熱交換器または保温及び保冷配管と
して、さらに流体の安全輸送管として用いることができ
るプラスチック製二重管に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a plastic double pipe that can be used, for example, as a heat exchanger or heat and cold insulation piping, and as a safe fluid transport pipe. .
（従来例）
従来の二重管は、内管と、外管と、その両管間の間隙内
に挿入された両管とは別体のスペーサとから構成されて
いる。(Conventional example) A conventional double tube is composed of an inner tube, an outer tube, and a spacer separate from both tubes and inserted into a gap between the two tubes.
（発明が解決しようとする問題点）
上記従来の二重管では、内管及び外管とは別にスペーサ
を製造しなくてはならないので、コストアップになる。(Problems to be Solved by the Invention) In the conventional double pipe described above, the spacer must be manufactured separately from the inner pipe and the outer pipe, which increases costs.
また、例えばスペーサを内管の外周面に適当間隔ごとに
固定した後、そのスペーサ付きの内管を外管内に挿入し
なくてはならず、二重管を構成するのに手間と時間とが
かかるものである。In addition, for example, after fixing spacers to the outer circumferential surface of the inner tube at appropriate intervals, the inner tube with the spacers must be inserted into the outer tube, which takes time and effort to construct a double tube. Such is the case.
本発明は上記問題点を解消した二重管を提供することを
目的とする。An object of the present invention is to provide a double pipe that solves the above problems.
（問題を解決するための手段）
上記問題を解決するため、第１発明のプラスチック製二
重管は、プラスチック製の内管と外管とを同芯状に嵌合
させ、内管と外管との間の間隙内に周方向適当間隔ごと
に突起を設け、その各突起を内管または外管と一体的に
成形したものである。(Means for solving the problem) In order to solve the above problem, the plastic double pipe of the first invention has an inner pipe and an outer pipe made of plastic that are fitted concentrically, and the inner pipe and the outer pipe are fitted concentrically. Protrusions are provided at appropriate intervals in the circumferential direction in the gap between the inner tube or the outer tube, and each of the protrusions is integrally molded with the inner tube or outer tube.
また、第２発明のプラスチ・ツク製二重管は、同芯状に
嵌合させられたプラスチ・ツク製の内管と外管との間の
間隙内に周方向適当間隔ごとＧこ仕切壁を設け、その各
仕切壁を内管及び外管と一体的に成形したものである。In addition, the double pipe made of plastic of the second invention has G-shaped partition walls at appropriate intervals in the circumferential direction in the gap between the inner pipe and the outer pipe made of plastic that are fitted concentrically. Each partition wall is integrally molded with the inner tube and outer tube.
（実施例）
以下、本発明の第１の実施例を第１図及び第２図に基づ
いて説明する。この実施例のプラスチック製二重管は、
内管１と外管２とを同芯状に嵌合させ、内管１と外管２
との間の間隙３内に９０″ごとに４つの突起４を設け、
その各突起４を外管２と一体的に成形したものである。(Example) Hereinafter, a first example of the present invention will be described based on FIGS. 1 and 2. The plastic double pipe of this example is
The inner tube 1 and the outer tube 2 are fitted concentrically, and the inner tube 1 and the outer tube 2
Four protrusions 4 are provided every 90″ in the gap 3 between the
Each projection 4 is integrally molded with the outer tube 2.
上記構成において、押出成形機により、内管１と突起４
付きの外管２とをそれぞれ別個に押出し成形する。この
とき、押出機ダイスに特殊な突起を形成することによっ
て、外管２に突起４を一体的に成形することができる。In the above configuration, the inner tube 1 and the protrusion 4 are formed by an extrusion molding machine.
The outer tube 2 with the attached outer tube 2 is separately extruded. At this time, the protrusion 4 can be integrally formed on the outer tube 2 by forming a special protrusion on the extruder die.
次に、内管１と外管２とを嵌合させると、第１図及び第
２図に示す状態となり、突起４によって両管１゜２は同
芯状に保持される。Next, when the inner tube 1 and the outer tube 2 are fitted together, the state shown in FIGS. 1 and 2 is achieved, and the projections 4 hold the tubes 1 and 2 concentrically.
上記構成の二重管を例えば、熱交換器として用いる場合
には、内管１と間隙３とにそれぞれ温度の異なる流体を
流し、その両流体間で熱交換させればよい。また保温及
び保冷配管として用いる場合には、内管１中に高温流体
または低温流体を流がし、間隙３内は断熱空気層とすれ
ばよい、さらに流体安全輸送管として用いる場合には、
流体を内管１内に流せばよい。この場合、たとえ内管１
に亀裂等があって流体が漏れても、外管２があるので、
外管２の外にまで漏れることはない。For example, when the double pipe having the above configuration is used as a heat exchanger, fluids having different temperatures may be caused to flow through the inner pipe 1 and the gap 3, respectively, and heat may be exchanged between the two fluids. In addition, when used as a heat-insulating or cold-insulating pipe, a high-temperature fluid or a low-temperature fluid may be allowed to flow through the inner pipe 1, and an insulating air layer may be formed within the gap 3. Furthermore, when used as a safe fluid transport pipe,
The fluid may be allowed to flow into the inner tube 1. In this case, even if the inner tube 1
Even if there is a crack or the like and fluid leaks, the outer tube 2 is still there, so
There is no leakage to the outside of the outer tube 2.
上記第１実施例では、外管２に突起４を設けたが、これ
に代えて、第３図及び第４図に示すごとく、内管１の外
周面に突起４を設けてもよい（第２の実施例）。In the first embodiment, the protrusion 4 is provided on the outer tube 2, but instead of this, the protrusion 4 may be provided on the outer peripheral surface of the inner tube 1 as shown in FIGS. 3 and 4. Example 2).
また第５図に示すごとく、内管ｌと外管２ととに、それ
ぞれ１８０″′ごとに一対の突起４を設けてもよい（第
３の実施例）。Further, as shown in FIG. 5, a pair of projections 4 may be provided on each of the inner tube 1 and the outer tube 2 at intervals of 180'' (third embodiment).
第１図及び第２図に示す第１の実施例では、４つの突起
４を設けたが、これに代えて、第６図に示すごとく、１
２００ごとに３つの突起４を設けてもよい（第４の実施
例）。In the first embodiment shown in FIGS. 1 and 2, four protrusions 4 are provided, but instead of this, one protrusion 4 is provided as shown in FIG.
Three protrusions 4 may be provided for every 200 (fourth embodiment).
そして第７図に示すごとく、内管１と外管２とに、それ
ぞれ１つずつ突起５．６を設け、内管側突起５の先端か
ら外管２の内周面に沿ってのびる円弧部７を設け、外管
側突起６の先端から内管１の外周面に沿ってのびる円弧
部８を設けてもよい（第５の実施例）。As shown in FIG. 7, one protrusion 5.6 is provided on each of the inner tube 1 and outer tube 2, and an arcuate portion extends from the tip of the inner tube side protrusion 5 along the inner circumferential surface of the outer tube 2. 7 may be provided, and an arcuate portion 8 extending from the tip of the outer tube side protrusion 6 along the outer peripheral surface of the inner tube 1 may be provided (fifth embodiment).
さらに第８図に示すごとく、外管２の内周面に１８０°
の間隔をおいて一対の突起９を設け、該各突起９の先端
から内管１に沿ってのびる一対の円弧部１０を設けても
よい（第６実施例）。Furthermore, as shown in FIG. 8, the inner peripheral surface of the outer tube 2 is
A pair of projections 9 may be provided at an interval of , and a pair of arcuate portions 10 may be provided extending along the inner tube 1 from the tip of each projection 9 (sixth embodiment).
上記第２〜第６の実施例の作用効果は第１の実施例と同
じであるので省略する。また内管ｌの材質としては、Ｐ
ＦＡ、ＥＴＦＥ、ＰＶｄＦ等が適当であり、外管２の材
質としては、ＥＴＦＥ、ＰＶｄＦ、ポリプロピレン等が
適当である。The effects of the second to sixth embodiments described above are the same as those of the first embodiment, so a description thereof will be omitted. In addition, the material of the inner tube l is P.
FA, ETFE, PVdF, etc. are suitable, and as the material of the outer tube 2, ETFE, PVdF, polypropylene, etc. are suitable.
本発明の第７の実施例を第９図に基づいて説明する。こ
の実施例のプラスチック製二重管は、同芯状に嵌合させ
られた内管１と外管２との間の間隙３内に周方向適当間
隔（この実施例では９０’）ごとに仕切壁１１を設け、
その各仕切壁１１を内管１及び外管２と一体的に成形し
たものである。A seventh embodiment of the present invention will be described based on FIG. 9. The plastic double tube of this embodiment is partitioned at appropriate circumferential intervals (90' in this embodiment) in the gap 3 between the inner tube 1 and the outer tube 2 which are fitted concentrically. Provide a wall 11,
Each partition wall 11 is integrally molded with the inner tube 1 and the outer tube 2.
上記構成において、押出成形機により、先に内管１を押
出成形し、続いて、その内管１を芯にして外管２及び仕
切壁１１を被覆押出成形することにより、内管１と外管
２とが仕切壁１１によって一体的に成形された二重管を
得ることができる。In the above configuration, the inner tube 1 is first extruded using an extrusion molding machine, and then the outer tube 2 and the partition wall 11 are coated and extruded using the inner tube 1 as a core. A double pipe in which the pipe 2 and the partition wall 11 are integrally formed can be obtained.
特に長尺の二重管を製造するのに適している。この実施
例の二重管は、例えば、熱交換器または保温及び保冷配
管として、さらに流体の安全輸送管として用いることが
できることはもちろんのこと、間隙３が仕切壁１１によ
って複数に完全に仕切られているので、５種類の流体を
同時に流すこともできる。二重管の材質としてはＰＦＡ
、ＥＴＦＥ。It is particularly suitable for manufacturing long double pipes. The double pipe of this embodiment can be used, for example, as a heat exchanger, heat insulation and cold insulation piping, and as a safe transport pipe for fluids. Because of this, it is possible to flow five types of fluids at the same time. The material for the double pipe is PFA.
, ETFE.
ＰＶｄＦ、ポリプロピレン等が適当である。PVdF, polypropylene, etc. are suitable.
（発明の効果）
以上述べたごと（、第１発明によれば、内管又は外管を
製造する際に、同時に突起を製造することができ、突起
だけを両管とは別に製造する必要がないから、従来の二
重管に比べてコストダウンを図ることができる。また内
管と外管とを嵌合させるだけで、各突起が両管間の間隔
を適当に保って、同芯状の二重管を構成することができ
る。従って二重管を製造するのに手間と時間とがかから
ない。(Effects of the Invention) As stated above (According to the first invention, when manufacturing the inner tube or the outer tube, the protrusion can be manufactured at the same time, and only the protrusion needs to be manufactured separately from both tubes. Because there is no double tube, it is possible to reduce costs compared to conventional double tubes.In addition, by simply fitting the inner tube and outer tube, each protrusion maintains an appropriate spacing between the two tubes and creates a concentric shape. Therefore, it does not take much effort or time to manufacture a double pipe.
第２発明によれば、両管を製造する際に仕切壁を製造す
ることができ、仕切壁だけを両管とは別に製造する必要
がないから、第１発明と同様にコストダウンを図ること
ができる。また両管及び仕切壁を製造すると同時に同芯
状の二重管を製造することができる。従って、二重管を
製造するのに手間と時間とがかからない。さらに仕切壁
によって間隙内が複数に完全に仕切られるので、複数種
類の流体を互いにまじり合わないようにして同時に流す
ことも可能である。According to the second invention, the partition wall can be manufactured when both pipes are manufactured, and there is no need to manufacture only the partition wall separately from both pipes, thereby reducing costs as in the first invention. I can do it. In addition, a concentric double pipe can be manufactured at the same time as both pipes and the partition wall are manufactured. Therefore, it does not take much effort or time to manufacture the double pipe. Furthermore, since the gap is completely partitioned into a plurality of sections by the partition wall, it is possible to flow a plurality of types of fluid at the same time without mixing with each other.
第１図及び第２図は本発明の第１の実施例を示し、第１
図は端面図、第２図は斜視図である。第３図及び第４図
は本発明の第２の実施例を示し、第３図は端面図、第４
図は一部切欠き斜視図である。
第５図は本発明の第３の実施例を示す端面図、第６図は
本発明の第４の実施例を示す端面図、第７図は本発明の
第５の実施例を示す端面図、第８図は本発明の第６の実
施例を示す端面図、第９図は本発明の第７の実施例を示
す斜視図である。
１・・・内管、２・・・外管、４．５．６．９・・・突
起、１１・・・仕切壁FIG. 1 and FIG. 2 show a first embodiment of the present invention.
The figure is an end view, and FIG. 2 is a perspective view. 3 and 4 show a second embodiment of the invention, with FIG. 3 being an end view and FIG.
The figure is a partially cutaway perspective view. FIG. 5 is an end view showing the third embodiment of the invention, FIG. 6 is an end view showing the fourth embodiment of the invention, and FIG. 7 is an end view showing the fifth embodiment of the invention. , FIG. 8 is an end view showing a sixth embodiment of the invention, and FIG. 9 is a perspective view showing a seventh embodiment of the invention. 1...Inner tube, 2...Outer tube, 4.5.6.9...Protrusion, 11...Partition wall
Claims (1)
、内管と外管との間の間隙内に周方向適当間隔ごとに突
起を設け、その各突起を内管または外管と一体的に成形
したことを特徴とするプラスチック製二重管。 ２ 同芯状に嵌合させられたプラスチック製の内管と外
管との間の間隙内に周方向適当間隔ごとに仕切壁を設け
、その各仕切壁を内管及び外管と一体的に成形したこと
を特徴とするプラスチック製二重管。[Scope of Claims] 1. An inner tube and an outer tube made of plastic are fitted concentrically, and projections are provided at appropriate intervals in the circumferential direction in the gap between the inner tube and the outer tube, and each of the projections is A plastic double tube characterized by being integrally molded with an inner tube or an outer tube. 2 Partition walls are provided at appropriate intervals in the circumferential direction in the gap between the plastic inner and outer pipes that are fitted concentrically, and each partition wall is integrated with the inner and outer pipes. A plastic double tube characterized by being molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25355985A JPS62113984A (en) | 1985-11-12 | 1985-11-12 | Double pipe made of plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25355985A JPS62113984A (en) | 1985-11-12 | 1985-11-12 | Double pipe made of plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62113984A true JPS62113984A (en) | 1987-05-25 |
Family
ID=17253049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25355985A Pending JPS62113984A (en) | 1985-11-12 | 1985-11-12 | Double pipe made of plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62113984A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890865A (en) * | 1986-11-18 | 1990-01-02 | Smc Corporation | Tube joint for use with multi-walled tube assembly |
| US4906496A (en) * | 1986-10-15 | 1990-03-06 | Sms Corporation | Double-walled tube assembly |
| US4978148A (en) * | 1985-08-20 | 1990-12-18 | Shoketsu Kinzoku Kogyo Kabushiki Kaisha | Coupling for multi-passage tube |
| JP2011129905A (en) * | 2009-12-08 | 2011-06-30 | Asml Holding Nv | Double containment system for transporting fluid through rolling loop-like cable duct |
| JP2013224738A (en) * | 2012-04-20 | 2013-10-31 | Ti Automotive (Heidelberg) Gmbh | Connector, in particular quick connector |
| JP2016109186A (en) * | 2014-12-04 | 2016-06-20 | 東京エレクトロン株式会社 | Joint |
-
1985
- 1985-11-12 JP JP25355985A patent/JPS62113984A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978148A (en) * | 1985-08-20 | 1990-12-18 | Shoketsu Kinzoku Kogyo Kabushiki Kaisha | Coupling for multi-passage tube |
| US4906496A (en) * | 1986-10-15 | 1990-03-06 | Sms Corporation | Double-walled tube assembly |
| US4890865A (en) * | 1986-11-18 | 1990-01-02 | Smc Corporation | Tube joint for use with multi-walled tube assembly |
| JP2011129905A (en) * | 2009-12-08 | 2011-06-30 | Asml Holding Nv | Double containment system for transporting fluid through rolling loop-like cable duct |
| US9052616B2 (en) | 2009-12-08 | 2015-06-09 | Asml Holding N.V. | Dual containment system having coaxial flexible tubes for transporting a fluid through a “rolling loop” cable duct |
| JP2013224738A (en) * | 2012-04-20 | 2013-10-31 | Ti Automotive (Heidelberg) Gmbh | Connector, in particular quick connector |
| JP2016109186A (en) * | 2014-12-04 | 2016-06-20 | 東京エレクトロン株式会社 | Joint |
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