JP2007321867A - Flexible tube - Google Patents
Flexible tube Download PDFInfo
- Publication number
- JP2007321867A JP2007321867A JP2006152554A JP2006152554A JP2007321867A JP 2007321867 A JP2007321867 A JP 2007321867A JP 2006152554 A JP2006152554 A JP 2006152554A JP 2006152554 A JP2006152554 A JP 2006152554A JP 2007321867 A JP2007321867 A JP 2007321867A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat
- shrinkable
- flexible
- flexible tube
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims description 13
- 239000000446 fuel Substances 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 230000008602 contraction Effects 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Abstract
Description
本発明は、流体を移送するためのフレキシブルチューブに関するものであり、特に、チューブ本体から流体の漏洩があるか否かを容易に発見し得るよう構成されたフレキシブルチューブに関する。 The present invention relates to a flexible tube for transferring a fluid, and more particularly to a flexible tube configured to easily detect whether or not there is leakage of fluid from a tube body.
原料、燃料、処理用流体など、種々の流体（気体や液体）を移送する管路として、フレキシブルチューブが用いられている。フレキシブルチューブの構造は、移送すべき流体の性質や状態、外部の使用条件などに応じて、単純なゴムホースから、複雑に構成された金属製ベローズ管などに至るまで、多種多様である。例えば、金属製ベローズ管については特許文献１に詳細に記載されている。
A flexible tube is used as a conduit for transferring various fluids (gas and liquid) such as raw materials, fuels, and processing fluids. The flexible tube has a wide variety of structures ranging from a simple rubber hose to a complicated metal bellows tube depending on the nature and state of the fluid to be transferred, external usage conditions, and the like. For example, a metal bellows tube is described in detail in
フレキシブルチューブは、可撓性を有するが故に、動的に取り扱われる用途が多く、繰り返しの屈伸や、床面等との擦れ、激突などを受け、そのダメージによって亀裂などが形成され内部流体が漏洩する場合がある。
内部流体が漏洩しているかどうかは常に監視をし続けねばならないが、実際の使用現場では、フレキシブルチューブの全長にわたって正確なリーク検査を行なうことは、手間のかかる作業であった。
Whether the internal fluid is leaking or not must always be monitored, but in actual use sites, it has been a laborious task to conduct an accurate leak inspection over the entire length of the flexible tube.
本発明の目的は、流体の漏洩があるか否かを容易に発見し得る構造を有するフレキシブルチューブを提供することにある。 An object of the present invention is to provide a flexible tube having a structure capable of easily detecting whether or not there is fluid leakage.
本発明は、次の特徴を有するものである。
（１）可撓性を有するチューブ本体と、その外側を覆う熱収縮チューブとを有し、該熱収縮チューブに少なくとも１つの貫通孔が設けられていることを特徴とする、フレキシブルチューブ。
（２）熱収縮チューブの全長から任意に選択される特定の区間の両端部が、チューブ本体の外面に気密に接合されており、該区間内に貫通孔が設けられている、上記（１）記載のフレキシブルチューブ。
（３）熱収縮チューブが、一層からなるチューブであるか、複数の層からなる積層構造を有するチューブであるか、別個の熱収縮チューブをチューブ本体の外側に順次重ねて装着したものであるか、またはこれらを複合したものである、上記（１）または（２）記載のフレキシブルチューブ。
（４）可撓性を有するチューブ本体が、金属製ベローズ管または非金属管である、上記（１）〜（３）のいずれかに記載のフレキシブルチューブ。
（５）当該フレキシブルチューブによって移送すべき流体が、水素燃料電池に用いられる水素である、上記（１）〜（４）のいずれかに記載のフレキシブルチューブ。
The present invention has the following features.
(1) A flexible tube having a flexible tube main body and a heat shrinkable tube covering the outside thereof, wherein the heat shrinkable tube is provided with at least one through hole.
(2) Both ends of a specific section arbitrarily selected from the entire length of the heat-shrinkable tube are airtightly joined to the outer surface of the tube body, and a through hole is provided in the section (1) The flexible tube as described.
(3) Whether the heat-shrinkable tube is a single-layered tube, a tube having a laminated structure consisting of a plurality of layers, or a separate heat-shrinkable tube that is sequentially stacked on the outside of the tube body. Or the flexible tube according to (1) or (2) above, which is a combination of these.
(4) The flexible tube in any one of said (1)-(3) whose tube main body which has flexibility is a metal bellows pipe | tube or a nonmetallic pipe | tube.
(5) The flexible tube in any one of said (1)-(4) whose fluid which should be transferred by the said flexible tube is hydrogen used for a hydrogen fuel cell.
上記（１）に示した構成によって、例えば、熱収縮チューブの両端部をチューブ本体の外面に十分気密に密着させておけば、図１（ｂ）に示すように、熱収縮チューブ２に形成した貫通孔ｈが、流体ｆ１にとっての外界への出口となる。
従って、ガス検知などの漏洩検査を行なう場合には、全長にわたって漏洩を調べていく必要がなく、検査対象箇所を熱収縮チューブの貫通孔に絞ることができるので、検査作業そのものが容易になる。
特に、水素ガスの様に拡散し易い流体の場合、従来のままの配管では、ある程度の量が漏れ出さないと検知は難しいが、本発明によれば、微量な漏洩も熱収縮チューブの貫通孔に集めることが出来るので、漏洩ガスの検出精度が高くなる。
With the configuration shown in (1) above, for example, if both ends of the heat-shrinkable tube are sufficiently tightly adhered to the outer surface of the tube body, the heat-
Therefore, when performing a leak test such as gas detection, it is not necessary to check the leak over the entire length, and the inspection target location can be narrowed down to the through hole of the heat-shrinkable tube, thus facilitating the test operation itself.
In particular, in the case of a fluid that easily diffuses, such as hydrogen gas, it is difficult to detect a certain amount of leakage with the conventional piping, but according to the present invention, even a small amount of leakage can be detected through the through-hole of the heat-shrinkable tube. Therefore, leakage gas detection accuracy is improved.
図１（ａ）に示すように、本発明によるフレキシブルチューブは、可撓性を有するチューブ本体１と、その外側を覆う熱収縮チューブ２とを有して構成され、該熱収縮チューブ２には、少なくとも１つの貫通孔ｈが設けられている。
As shown in FIG. 1 (a), a flexible tube according to the present invention comprises a
チューブ本体は、可撓性を有する管状物であればよく、例えば、ゴムホース、柔軟性を有する樹脂材料からなる管、金属製ベローズ管などが挙げられる。
チューブ本体として用いられる種々の管自体は、各用途に応じた公知のものを用いてよく、その断面構造、断面形状、内径（または呼び径）、肉厚、全長に限定はない。特に、燃料電池車の燃料である高圧水素ガスなど、漏洩を厳しく抑制しなければならないような用途には、チューブ本体として金属製ベローズ管が好ましく用いられる。金属製ベローズ管は、どのような層構造を有するものであってもよい。
汎用的な用途では、チューブ本体の内径は４ｍｍ〜２０ｍｍ程度、全長は３００ｍｍ〜５０００ｍｍ程度である。
The tube body may be a flexible tubular material, and examples thereof include a rubber hose, a tube made of a resin material having flexibility, and a metal bellows tube.
Various pipes used as the tube body may be known pipes according to each application, and there are no limitations on the cross-sectional structure, cross-sectional shape, inner diameter (or nominal diameter), wall thickness, and overall length. In particular, a metal bellows pipe is preferably used as the tube body for uses such as high-pressure hydrogen gas, which is fuel for fuel cell vehicles, where leakage must be strictly suppressed. The metal bellows tube may have any layer structure.
In general-purpose applications, the inner diameter of the tube body is about 4 mm to 20 mm, and the total length is about 300 mm to 5000 mm.
本発明に用いられる熱収縮チューブ自体は、用途に適した公知のものを用いてよい。熱収縮チューブは、例えば、樹脂原料をチューブ状に成形した後、架橋（電子線架橋など）を施し、その後、引き延ばすことによって製造される。
熱収縮チューブの材料は、特に限定はされないが、例えば、フッ素樹脂、ポリエステル樹脂、ポリオレフィン樹脂、ポリウレタン樹脂、ポリスチレン樹脂、ポリアミド樹脂、エチレン−プロピレンゴム、シリコーンゴム、ラテックスなどが挙げられる。
フッ素樹脂からなる熱収縮チューブの商品としては、テフロン（登録商標）熱収縮チューブや、熱収縮エチレンプロピレンチューブなどが挙げられる。
As the heat-shrinkable tube itself used in the present invention, a known tube suitable for the application may be used. The heat-shrinkable tube is manufactured, for example, by forming a resin raw material into a tube shape, performing cross-linking (electron beam cross-linking or the like), and then stretching the resin.
The material of the heat-shrinkable tube is not particularly limited, and examples thereof include fluorine resin, polyester resin, polyolefin resin, polyurethane resin, polystyrene resin, polyamide resin, ethylene-propylene rubber, silicone rubber, and latex.
Examples of the heat-shrinkable tube made of a fluororesin include Teflon (registered trademark) heat-shrinkable tubes and heat-shrinkable ethylene propylene tubes.
本発明に用いられる熱収縮チューブは、単一材料からなる単純な一層のチューブだけでなく、材料配合や性質がチューブの部位によって異なるように形成されたもの、断面が年輪のような多層の積層構造として形成されたものであってもよい。また、前記のような種々の熱収縮チューブを別個に複数用意し、チューブ本体の外側に順次重ねて装着することで多層にしたものであってもよい。 The heat-shrinkable tube used in the present invention is not only a simple single-layer tube made of a single material, but also is formed such that the material composition and properties differ depending on the portion of the tube, and a multi-layered laminate whose cross section is an annual ring It may be formed as a structure. Further, a plurality of the various heat shrinkable tubes as described above may be prepared separately, and may be multi-layered by sequentially overlapping and mounting on the outside of the tube main body.
当該フレキシブルチューブを構成する熱収縮チューブは、全長にわたって略均一な厚さ（熱収縮後の意図せぬ厚さのばらつきは除く）であってもよいし、任意の部位の厚さを目的に応じて局所的に変化させてもよい。熱収縮チューブを局所的に厚くする場合、単品の熱収縮チューブ自体を局所的に厚くしてもよいし、複数の熱収縮チューブを局所的に２層、３層と重ねて装着してもよい。
上記の手法によって、熱収縮チューブを局所的に厚くすれば、その区間だけ、チューブの急激な曲げを抑制することができる。よって、急な曲げを抑制したい部分など、任意の局所部分に対して、熱収縮チューブを適宜厚くすればよい。
The heat-shrinkable tube constituting the flexible tube may have a substantially uniform thickness over the entire length (excluding unintentional thickness variations after heat-shrinking), and the thickness of an arbitrary part can be determined according to the purpose. May be changed locally. When the heat-shrinkable tube is locally thickened, the single heat-shrinkable tube itself may be locally thickened, or a plurality of heat-shrinkable tubes may be locally overlapped with two or three layers. .
If the heat-shrinkable tube is locally thickened by the above-described method, rapid bending of the tube can be suppressed only in that section. Therefore, what is necessary is just to thicken a heat contraction tube suitably with respect to arbitrary local parts, such as a part which wants to suppress sudden bending.
当該フレキシブルチューブを構成する熱収縮チューブは、既に加熱されて収縮しチューブ本体に密着した状態（完成品の形態）となっていることが好ましいが、完全に本体チューブに密着していなくてもよく、また、使用に臨んで加熱するためにチューブ本体を覆っただけの熱収縮前の状態であってもよい。 It is preferable that the heat-shrinkable tube constituting the flexible tube is already heated and shrunk and is in close contact with the tube main body (in the form of the finished product), but may not be completely in close contact with the main body tube. In addition, the tube body may be in a state before thermal contraction just covering the tube body for heating in use.
チューブ本体に発生する内部流体の漏洩を全長にわたって監視し、かつ、チューブ本体全体を保護する点からは、図２（ａ）に示すように、チューブ本体１を全長にわたって熱収縮チューブ２で覆い、該熱収縮チューブ２の両端部をチューブ本体１の外面に気密に密着させ、漏洩した流体を通過させない態様が好ましい。これによって、チューブ本体の全長のどの部分に漏洩が生じても、漏洩した流体ｆ１にとっては熱収縮チューブ２の貫通孔ｈだけが外界への出口となり、この部分で流体ｆ１の検出を行なうことができる。
しかし、図２（ａ）のような基本的な態様だけでなく、用途や目的に応じては、図２（ｂ）に示すように、チューブ本体１の全長のうちの任意の区間だけを熱収縮チューブ２で覆う態様であってもよい。
また、チューブ本体の特定の部分だけを、ある材料の熱収縮チューブで覆い、他の部分を別の材料の熱収縮チューブで覆うというように、１つのチューブ本体に複数の熱収縮チューブを長手方向に連ねて装着してもよい。
From the viewpoint of monitoring the leakage of internal fluid generated in the tube main body over the entire length and protecting the entire tube main body, as shown in FIG. 2A, the tube
However, in addition to the basic mode as shown in FIG. 2A, depending on the application and purpose, as shown in FIG. 2B, only an arbitrary section of the entire length of the
In addition, a plurality of heat-shrinkable tubes are longitudinally covered in one tube body so that only a specific part of the tube body is covered with a heat-shrinkable tube made of one material and the other part is covered with a heat-shrinkable tube made of another material. You may wear it in a row.
上記のとおり、チューブ本体のどの区間を熱収縮チューブで覆うかは任意であるが、さらに、装着した１つの熱収縮チューブのうちのどの区間を検出対象の区間とするかも任意である。最も単純な例は、図２（ａ）に示すように、熱収縮チューブ２の両端部をチューブ本体に気密に密着させる態様である。
これに対して、１つの熱収縮チューブの全長から特定の区間を適宜選択し、該区間の両端部を、チューブ本体の外面に気密に密着させる態様としてもよい。該特定の区間内に貫通孔を設けることで、該区間だけに限定した検出が可能となる。
図２（ｃ）は、前記特定の区間を、区間Ａ１とＡ２とに分けた場合の例である。
区間の長さは、チューブ本体の外径や、管内の圧力、流体の種類、監視のし易さなどに応じて適宜決定すればよい。
As described above, which section of the tube body is covered with the heat-shrinkable tube is arbitrary, and further, which section of the attached one heat-shrinkable tube may be arbitrarily set as the detection target section. The simplest example is a mode in which both ends of the
On the other hand, it is good also as an aspect which selects a specific area | region suitably from the full length of one heat contraction tube, and adheres the both ends of this area to the outer surface of a tube main body airtightly. By providing a through hole in the specific section, detection limited to the section can be performed.
FIG. 2C shows an example in which the specific section is divided into sections A1 and A2.
The length of the section may be appropriately determined according to the outer diameter of the tube body, the pressure in the tube, the type of fluid, the ease of monitoring, and the like.
熱収縮チューブを、特定の区間の両端部においてチューブ本体の外面に気密に密着させるための方法は、特に限定はされず、例えば、熱収縮チューブ自体の熱収縮力を利用するだけの方法、接着剤を介在させる方法、熱収縮チューブの上から締め付けリングなどによって締め付ける方法、局所的に高温に加熱し溶着させる方法、かしめリングをかぶせてかしめる方法などが挙げられる。 There is no particular limitation on the method for causing the heat-shrinkable tube to tightly adhere to the outer surface of the tube body at both ends of the specific section. For example, a method that only uses the heat-shrinking force of the heat-shrinkable tube itself, adhesion Examples thereof include a method of interposing an agent, a method of tightening with a tightening ring from above the heat-shrinkable tube, a method of locally heating and welding to a high temperature, and a method of caulking with a caulking ring.
熱収縮チューブに設けられる貫通孔の開口形状は、特に限定はされないが、力がかかった時に応力集中の生じやすい矩形などよりも、円形が好ましい。また、該貫通孔の口径も、特に限定はされないが、ガス検知センサ等の検出装置による検出性を高める点からは、直径３ｍｍ〜１０ｍｍ、特に、直径４ｍｍ〜５ｍｍ程度が好ましい範囲である。 The opening shape of the through hole provided in the heat-shrinkable tube is not particularly limited, but a circular shape is preferable to a rectangular shape in which stress concentration easily occurs when a force is applied. Also, the diameter of the through hole is not particularly limited, but a diameter of 3 mm to 10 mm, particularly about 4 mm to 5 mm, is a preferable range from the viewpoint of enhancing the detectability by a detection device such as a gas detection sensor.
熱収縮チューブに設けられる貫通孔の個数は、特に限定はされないが、ガス検知センサによる検出性を高める点からは、上記した特定の区間１つに対して貫通孔を１つ設けることが好ましい。また、特定の区間１つに対して貫通孔を複数設けておき、使用しない貫通孔をフィルムなどで覆いシールしておいてもよい。 The number of through-holes provided in the heat-shrinkable tube is not particularly limited, but it is preferable to provide one through-hole for each specific section described above from the viewpoint of improving the detectability by the gas detection sensor. Also, a plurality of through holes may be provided for one specific section, and unused through holes may be covered and sealed with a film or the like.
熱収縮チューブに設けられる貫通孔の位置は、端部、中央部分など、任意の位置であってよい。貫通孔を熱収縮チューブの端部に設ければ、該貫通孔での検知と、外部の継手との接続における漏洩検知とをほぼ同時に行うことができるので、作業効率が良い。
尚、当該フレキシブルチューブを上下方向に延びる姿勢にて用いる場合、内部流体の重さに応じて貫通孔の位置を適宜変更してもよい。例えば、内部流体が空気よりも重い場合は貫通孔の位置を下側にするなどである。
The position of the through hole provided in the heat-shrinkable tube may be an arbitrary position such as an end portion or a central portion. If the through hole is provided at the end of the heat shrinkable tube, the detection at the through hole and the leak detection at the connection with the external joint can be performed almost simultaneously, so that the work efficiency is good.
In addition, when using the said flexible tube in the attitude | position extended in an up-down direction, you may change the position of a through-hole suitably according to the weight of an internal fluid. For example, when the internal fluid is heavier than air, the position of the through hole is on the lower side.
熱収縮チューブに対する貫通孔の形成方法に限定はないが、熱収縮チューブとして成形
した後、ドリル、パンチ、専用刃物などによって形成する方法が挙げられる。
Although there is no limitation in the formation method of the through-hole with respect to a heat-shrinkable tube, After forming as a heat-shrinkable tube, the method of forming with a drill, a punch, a special blade etc. is mentioned.
本実施例では、本発明によるフレキシブルチューブを実際に製作し、内部流体の漏洩を意図的に発生させて、貫通孔による漏洩検出の有効性を確認した。
当該フレキシブルチューブの構成の概略は、金属製ベローズ管をチューブ本体とし、その外側に、貫通孔を有する熱収縮チューブを被覆したものである。
In this example, the flexible tube according to the present invention was actually manufactured, and the leakage of the internal fluid was intentionally generated to confirm the effectiveness of leak detection by the through hole.
In the outline of the configuration of the flexible tube, a metal bellows tube is used as a tube main body, and a heat shrinkable tube having a through hole is coated on the outside thereof.
金属製ベローズ管は、内径：４．５ｍｍ、総外径：１６．５ｍｍである。
熱収縮チューブの仕様は、材料：フッ素樹脂、肉厚：０．４ｍｍである。
貫通孔は、その口径を５ｍｍとし、熱収縮チューブ自体の端部から２５ｍｍの位置に設けた。
The metal bellows tube has an inner diameter of 4.5 mm and a total outer diameter of 16.5 mm.
The specifications of the heat-shrinkable tube are material: fluororesin, wall thickness: 0.4 mm.
The diameter of the through hole was 5 mm, and was provided at a position 25 mm from the end of the heat shrinkable tube itself.
上記熱収縮チューブを金属製ベローズ管の外側に装着した後、２００℃の加熱処理を施して収縮させ、金属製ベローズ管の外面に密着させ、本発明によるフレキシブルチューブを得た。
専用の試験機を用いて該フレキシブルチューブに対して繰り返しの曲げ動作を行なわせ、金属製ベローズ管を意図的に疲労させて亀裂を生じさせた。このフレキシブルチューブに対して金属製ベローズ管の内部に水を充填し内圧を３５ＭＰａとしたところ、熱収縮チューブの貫通孔から、漏洩した水が出てくることが確認できた。
After mounting the heat-shrinkable tube on the outside of the metal bellows tube, it was subjected to a heat treatment at 200 ° C. to be contracted and adhered to the outer surface of the metal bellows tube to obtain a flexible tube according to the present invention.
Using a dedicated testing machine, the flexible tube was repeatedly bent, and the metal bellows tube was intentionally fatigued to cause cracks. When this flexible tube was filled with water inside a metal bellows tube and the internal pressure was set to 35 MPa, it was confirmed that leaked water came out from the through hole of the heat shrinkable tube.
本発明によって、種々のフレキシブルチューブの使用現場における、流体の漏洩に対する検査作業がより容易となった。当該フレキシブルチューブの用途や移送すべき流体は、特に限定はされないが、例えば、燃料電池等に用いられる水素ガスは、漏洩すると危険であるため、本発明の有用性が特に顕著になる。 According to the present invention, the inspection work for the leakage of fluid at the use site of various flexible tubes has become easier. The use of the flexible tube and the fluid to be transferred are not particularly limited. For example, hydrogen gas used in a fuel cell or the like is dangerous when leaked, and thus the usefulness of the present invention is particularly remarkable.
１ チューブ本体
２ 熱収縮チューブ
ｈ 貫通孔
1
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006152554A JP4960017B2 (en) | 2006-05-31 | 2006-05-31 | Flexible Tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006152554A JP4960017B2 (en) | 2006-05-31 | 2006-05-31 | Flexible Tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007321867A true JP2007321867A (en) | 2007-12-13 |
| JP4960017B2 JP4960017B2 (en) | 2012-06-27 |
Family
ID=38854866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006152554A Active JP4960017B2 (en) | 2006-05-31 | 2006-05-31 | Flexible Tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4960017B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209956A (en) * | 2008-02-29 | 2009-09-17 | Osaka Gas Co Ltd | Fluid cutoff bag |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101987148B1 (en) * | 2017-11-15 | 2019-06-10 | 최용남 | A Coated Pipe And The Manufacturing Method Thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118198A (en) * | 1981-01-16 | 1982-07-22 | Hitachi Ltd | Metal coating type thermal insulation device |
| JPS58112797U (en) * | 1982-01-26 | 1983-08-02 | 株式会社クボタ | Gas transportation pipeline |
| JPS5950287A (en) * | 1982-09-16 | 1984-03-23 | 古河電気工業株式会社 | Transport pipe for fluid |
| JPS60121578U (en) * | 1984-01-24 | 1985-08-16 | 日立金属株式会社 | resin coated flexible tube |
| JPH0131832Y2 (en) * | 1984-04-28 | 1989-09-29 | ||
| JPH025188Y2 (en) * | 1983-09-22 | 1990-02-07 | ||
| JPH0336781Y2 (en) * | 1985-02-27 | 1991-08-05 | ||
| JPH0953765A (en) * | 1995-08-18 | 1997-02-25 | Sanko Gas Seiki Kk | Flexible metal pipe |
| JPH09166256A (en) * | 1995-08-18 | 1997-06-24 | Sanko Gas Seiki Kk | Joint for metal flexible pipe |
| JP2001132876A (en) * | 1999-11-04 | 2001-05-18 | Bridgestone Corp | Marine hose with leakage detecting function |
| JP2002082010A (en) * | 2000-09-11 | 2002-03-22 | Nec Yamagata Ltd | Leak detecting tube |
| JP2004085372A (en) * | 2002-08-27 | 2004-03-18 | Taisei Corp | Double pipe system |
| JP2004100787A (en) * | 2002-09-06 | 2004-04-02 | Ork:Kk | Metal bellows tube and its manufacturing method |
| JP2006047066A (en) * | 2004-08-03 | 2006-02-16 | Toyota Motor Corp | Gas leakage detection mechanism |
-
2006
- 2006-05-31 JP JP2006152554A patent/JP4960017B2/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118198A (en) * | 1981-01-16 | 1982-07-22 | Hitachi Ltd | Metal coating type thermal insulation device |
| JPS58112797U (en) * | 1982-01-26 | 1983-08-02 | 株式会社クボタ | Gas transportation pipeline |
| JPS5950287A (en) * | 1982-09-16 | 1984-03-23 | 古河電気工業株式会社 | Transport pipe for fluid |
| JPH025188Y2 (en) * | 1983-09-22 | 1990-02-07 | ||
| JPS60121578U (en) * | 1984-01-24 | 1985-08-16 | 日立金属株式会社 | resin coated flexible tube |
| JPH0131832Y2 (en) * | 1984-04-28 | 1989-09-29 | ||
| JPH0336781Y2 (en) * | 1985-02-27 | 1991-08-05 | ||
| JPH0953765A (en) * | 1995-08-18 | 1997-02-25 | Sanko Gas Seiki Kk | Flexible metal pipe |
| JPH09166256A (en) * | 1995-08-18 | 1997-06-24 | Sanko Gas Seiki Kk | Joint for metal flexible pipe |
| JP2001132876A (en) * | 1999-11-04 | 2001-05-18 | Bridgestone Corp | Marine hose with leakage detecting function |
| JP2002082010A (en) * | 2000-09-11 | 2002-03-22 | Nec Yamagata Ltd | Leak detecting tube |
| JP2004085372A (en) * | 2002-08-27 | 2004-03-18 | Taisei Corp | Double pipe system |
| JP2004100787A (en) * | 2002-09-06 | 2004-04-02 | Ork:Kk | Metal bellows tube and its manufacturing method |
| JP2006047066A (en) * | 2004-08-03 | 2006-02-16 | Toyota Motor Corp | Gas leakage detection mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209956A (en) * | 2008-02-29 | 2009-09-17 | Osaka Gas Co Ltd | Fluid cutoff bag |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4960017B2 (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011325068B2 (en) | Method and apparatus for pressure testing a pipe joint | |
| US7942422B2 (en) | Multiwall pipe lip seal joint | |
| JP2008008487A (en) | Tube connection construction | |
| JP2009243895A (en) | Tightness test apparatus and tightness test method for tubular joint | |
| JP2010159852A (en) | Serrated metal gasket and combination gasket | |
| US9920861B2 (en) | Multilayer reinforced polymeric pipe and system of pipes for water transportation | |
| JP4960017B2 (en) | Flexible Tube | |
| CN101932866B (en) | Loose flange-type flared pipe joint and steel pipe joining method using the same | |
| KR20170102630A (en) | Bellows for preventing gas leakage and method of the same | |
| JP2002082010A (en) | Leak detecting tube | |
| JP3971683B2 (en) | Double piping equipment | |
| JP2007327850A (en) | Inspection tool for inspecting helium leakage in pipe welded part | |
| JP7179994B2 (en) | Leak Detection Systems and Methods for Detecting Leaks | |
| JP2005189223A (en) | Detection system | |
| JP5302152B2 (en) | Pipe joint | |
| JP2005180521A (en) | Anti-corrosive connection structure of metal pipe | |
| JP6140561B2 (en) | Pipe fitting | |
| JPH0791600A (en) | Gas leakage detector | |
| JPH082557Y2 (en) | Existing piping cover | |
| JP2001059794A (en) | Method and device for inspecting airtightness of pipe joint part | |
| RU2781922C1 (en) | Device for protecting the inside of the weld | |
| JP2004190806A (en) | Seal structure | |
| RU2676548C1 (en) | Internal insert for sealing welded joint of pipeline | |
| JPH11190469A (en) | High pressure tube | |
| JP2017116077A (en) | Fluid feeding line structure and installation method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090205 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110304 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110315 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110513 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20111206 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120201 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120313 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120322 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150330 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4960017 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |