JPH03189494A - Tube joint and construction method thereof - Google Patents
Tube joint and construction method thereofInfo
- Publication number
- JPH03189494A JPH03189494A JP32823589A JP32823589A JPH03189494A JP H03189494 A JPH03189494 A JP H03189494A JP 32823589 A JP32823589 A JP 32823589A JP 32823589 A JP32823589 A JP 32823589A JP H03189494 A JPH03189494 A JP H03189494A
- Authority
- JP
- Japan
- Prior art keywords
- annular member
- pipe joint
- tube joint
- pipes
- insulating material
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title abstract description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000012777 electrically insulating material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000011810 insulating material Substances 0.000 abstract description 5
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 239000004642 Polyimide Substances 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 229920001721 polyimide Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000009430 construction management Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Joints With Sleeves (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は形状記憶合金からなる管継手に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a pipe joint made of a shape memory alloy.
［従来の技術］
形状記憶合金による管継手として、第３図に示すものが
ある。これは円筒状の管継手１１の両端から接続すべき
管１２の管端を挿入し、管継手１１を遷移温度以上に加
熱することにより該継手１１を縮径させて管１２相互を
接続するようになっている。[Prior Art] As a pipe joint made of a shape memory alloy, there is one shown in FIG. 3. This involves inserting the pipe ends of the pipes 12 to be connected from both ends of a cylindrical pipe joint 11, and heating the pipe joint 11 above the transition temperature to reduce the diameter of the joint 11 and connect the pipes 12 to each other. It has become.
［解決しようとする課ｉ］
この場合、第３図に示すように、管継手１１に、接続管
１２の管端が両側から同じ量挿入されていることが、十
分な継手効率を得るために必要である。[Issue i to be solved] In this case, as shown in FIG. 3, in order to obtain sufficient coupling efficiency, it is necessary to insert the same amount of the pipe end of the connecting pipe 12 into the pipe joint 11 from both sides. is necessary.
そのためには、被接続管の管端に予め挿入深さ位置をマ
ークしておいて、そのマークに合わせて管の挿入深さを
調整することが必要になり、施工能率を低下させる。特
に、垂直管を接続する場合には、管継手及び被接続管が
上下方向に動き易く、相対位置がずれるため、充分な継
手性能を得られないことがある。For this purpose, it is necessary to mark the insertion depth position on the end of the pipe to be connected in advance and adjust the insertion depth of the pipe according to the mark, which reduces construction efficiency. In particular, when connecting vertical pipes, the pipe joint and the pipes to be connected tend to move vertically and their relative positions shift, so that sufficient joint performance may not be obtained.
本発明は上記のような問題点を解消できるようにした管
継手及び施工方法を提供することを課題とするものであ
る。An object of the present invention is to provide a pipe joint and a construction method that can solve the above-mentioned problems.
［課題を解決するための手段］
本発明の管継手は、複数の管を接続する形状記憶合金か
らなる管継手で、この管継手内面の長さ方向中央部にス
トッパとなる導電性環状部材を設けると共に、管継手の
両端部と上記環状部材との間の内面に電気絶縁材料を設
けたことを特徴とするものである。[Means for Solving the Problems] The pipe joint of the present invention is a pipe joint made of a shape memory alloy that connects a plurality of pipes, and includes a conductive annular member serving as a stopper in the longitudinal center of the inner surface of the pipe joint. In addition, an electrically insulating material is provided on the inner surface between both ends of the pipe joint and the annular member.
また、施工方法は、上記の管継手を用い、この管継手の
両端部から被接続管を挿入し、その先端部を環状部材に
当接させ、挿入された被接続管相互間が導通したことに
より管継手を加熱することを特徴とするものである。In addition, the construction method is to use the above-mentioned pipe joint, insert the pipes to be connected from both ends of this pipe joint, and bring the tips of the pipes into contact with the annular member, so that the inserted pipes to be connected are electrically connected to each other. This system is characterized by heating the pipe joint.
［作用］
被接続管を管継手の両端から単に挿入しただけでは、管
継手の内面には電気絶縁材料が設けられているので、被
接続管相互間は絶縁されている。[Operation] If the pipes to be connected are simply inserted from both ends of the pipe joint, the pipes to be connected are insulated from each other because the inner surface of the pipe joint is provided with an electrically insulating material.
そこで、被接続管相互間が導通するまで、被接続管を強
く押し込む。被接続管相互間が導通したのは、被接続管
の先端部がストッパである導電性環状部材に当接するま
で完全に挿入された証拠である。そこで、この時点で管
継手を加熱縮径させることにより、シール性の高い管継
手を得ることができる。Therefore, the tubes to be connected are strongly pushed in until the tubes are electrically connected to each other. The fact that the connected tubes were electrically connected to each other is evidence that the connected tubes have been completely inserted until their tips come into contact with the conductive annular member that is the stopper. Therefore, by heating and reducing the diameter of the pipe joint at this point, a pipe joint with high sealing performance can be obtained.
被接続管相互間が導通、即ち被接続管の先端部が環状部
材に当接しなければ、加熱縮径施工ができないので、極
めて確実性の高い施工管理を自動的に行うことができる
。Unless the pipes to be connected are electrically connected to each other, that is, the tips of the pipes to be connected do not come into contact with the annular member, heating and diameter reduction work cannot be performed, so extremely reliable construction management can be performed automatically.
［実施例］ 以下、本発明の一実施例を図面を参照して説明する。[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
形状記憶合金からなる管継手１の長手方向中央部に、ス
トッパとしての導電性材料からなる環状部材３が設けら
れている。この環状部材３と端部との間の内面に電気絶
縁材料４が設けられている。An annular member 3 made of a conductive material and serving as a stopper is provided at the longitudinal center of the pipe joint 1 made of a shape memory alloy. An electrically insulating material 4 is provided on the inner surface between the annular member 3 and the end.
この絶縁材料には、加熱により軟化する例えばポリエチ
レンやポリイミドなどの樹脂が適している。Resin, such as polyethylene or polyimide, which softens when heated, is suitable for this insulating material.
そして、第２図に示すように、管継手１の両側から被接
続管２を挿入し、その先端部が環状部材３に当接するま
で押し込む。こうして被接続管２相互間が導通したこと
により、加熱器６を起動させて、管継手１を縮径させる
。Then, as shown in FIG. 2, the pipes 2 to be connected are inserted from both sides of the pipe joint 1, and pushed in until their distal ends abut against the annular member 3. Since the connected pipes 2 are electrically connected to each other in this way, the heater 6 is activated and the diameter of the pipe joint 1 is reduced.
こうして、シール性の高い管継手を得ることができる。In this way, a pipe joint with high sealing performance can be obtained.
この場合、この実施例のように、絶縁材料に加熱により
軟化する樹脂を使用すれば、軟化樹脂の硬化により更に
シール性を高めることができる。In this case, if a resin that softens when heated is used as the insulating material as in this embodiment, the sealing performance can be further improved by hardening the softened resin.
［発明の効果］
本気発明の管継手及び施工方法は上記のようなもので、
被接続管相互間が導通、即ち被接続管の先端部が管継手
の中央部に設けられた環状部材に当接しなければ、最終
の加熱縮径施工ができないので、極めて確実性の高い施
工管理を自動的に行うことかでき、シール性の高い管継
手を得ることができる。[Effect of the invention] The pipe joint and construction method of the serious invention are as described above,
The final heating and diameter reduction work cannot be performed unless the pipes to be connected are electrically connected, that is, the tips of the pipes to be connected do not come into contact with the annular member provided in the center of the pipe joint, allowing extremely reliable construction management. This can be done automatically, and pipe fittings with high sealing properties can be obtained.
第１図は本発明の一実施例を示す断面図、第２図は施工
手順を示す説明図、第３図は従来の形状記憶合金管継手
を管を接続した状態で示す断面図である。
１・・・管継手 ３・・・環状部材 ４・・・電気絶縁
材料。
第１図FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing the construction procedure, and FIG. 3 is a sectional view showing a conventional shape memory alloy pipe joint with pipes connected. 1... Pipe joint 3... Annular member 4... Electrical insulating material. Figure 1
Claims (1)
、この管継手内面の長さ方向中央部にストッパとなる導
電性環状部材を設けると共に、管継手の両端部と上記環
状部材との間の内面に電気絶縁材料を設けたことを特徴
とする管継手。 ２）請求項１に記載の管継手を用い、この管継手の両端
部から被接続管を挿入し、その先端部を環状部材に当接
させ、挿入された被接続管相互間が導通したことにより
管継手を加熱することを特徴とする管継手の施工方法。[Scope of Claims] 1) A pipe joint made of a shape memory alloy that connects a plurality of pipes, with a conductive annular member serving as a stopper provided at the longitudinal center of the inner surface of the pipe joint, and at both ends of the pipe joint. A pipe joint characterized in that an electrically insulating material is provided on the inner surface between the annular member and the annular member. 2) Using the pipe joint according to claim 1, inserting the pipes to be connected from both ends of the pipe joint, bringing the tips thereof into contact with the annular member, and conducting the inserted pipes to each other. A method for constructing a pipe joint characterized by heating the pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32823589A JP2643502B2 (en) | 1989-12-20 | 1989-12-20 | Pipe fitting and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32823589A JP2643502B2 (en) | 1989-12-20 | 1989-12-20 | Pipe fitting and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03189494A true JPH03189494A (en) | 1991-08-19 |
| JP2643502B2 JP2643502B2 (en) | 1997-08-20 |
Family
ID=18207954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32823589A Expired - Lifetime JP2643502B2 (en) | 1989-12-20 | 1989-12-20 | Pipe fitting and construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2643502B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016172772A1 (en) * | 2015-04-27 | 2016-11-03 | Fmc Technologies Do Brasil Ltda | Joint made of shape memory alloy and uses thereof |
| KR101695594B1 (en) * | 2016-05-13 | 2017-01-23 | 배은성 | Dolls holder for a cap |
-
1989
- 1989-12-20 JP JP32823589A patent/JP2643502B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016172772A1 (en) * | 2015-04-27 | 2016-11-03 | Fmc Technologies Do Brasil Ltda | Joint made of shape memory alloy and uses thereof |
| US10557579B2 (en) | 2015-04-27 | 2020-02-11 | Fmc Technologies Do Brasil Ltda | Joint made of shape memory alloy and uses thereof |
| KR101695594B1 (en) * | 2016-05-13 | 2017-01-23 | 배은성 | Dolls holder for a cap |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2643502B2 (en) | 1997-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970401 |