JPH0334694Y2 - - Google Patents
Info
- Publication number
- JPH0334694Y2 JPH0334694Y2 JP12831385U JP12831385U JPH0334694Y2 JP H0334694 Y2 JPH0334694 Y2 JP H0334694Y2 JP 12831385 U JP12831385 U JP 12831385U JP 12831385 U JP12831385 U JP 12831385U JP H0334694 Y2 JPH0334694 Y2 JP H0334694Y2
- Authority
- JP
- Japan
- Prior art keywords
- flaw detection
- elastic
- main body
- holder
- holders
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、牽引具又は押圧具で管内移動自在に
形成した本体に、管に対する探傷用センサーを取
付けた既設導管用探傷装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a flaw detection device for existing conduits, in which a flaw detection sensor for the pipe is attached to a main body that is movable within the pipe using a pulling tool or a pressing tool.
従来、例えば実開昭55−13266号公報に示され
るように、本体の構造が複雑で、流体輸送に対す
る抵抗の大きい、かつ、撓み変形しにくいものに
なつていた。
Conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 55-13266, the structure of the main body was complicated, had a large resistance to fluid transport, and was difficult to bend and deform.
しかし、本体構造が複雑なために経費面や補修
面で不利となり、流体輸送に対する大抵抗のため
に探傷時には、流体輸送を中断しなければなら
ず、撓み変形しにくいために急激な曲りのある導
管には適用できず、既設導管用の探傷装置として
は実用価値が低かつた。
However, the complicated structure of the main body is disadvantageous in terms of cost and repair, and the large resistance to fluid transport necessitates interrupting fluid transport during flaw detection. It cannot be applied to conduits and has low practical value as a flaw detection device for existing conduits.
本考案の目的は、本体構造を簡単で、流体輸送
に対する抵抗の小さい、かつ、撓み変形しやすい
ものに改良する点にある。 The purpose of the present invention is to improve the main body structure so that it is simple, has low resistance to fluid transport, and is easy to bend and deform.
本考案の特徴構成は、探傷用センサーを備えた
管内移動自在な本体が、前後一対の保持体、それ
ら保持体どうしを連結する可撓性物体、並びに、
前記保持体に取付けられると共に前記可撓性物体
の周囲に並べられた多数の弾性帯状体から成り、
それら弾性帯状体夫々の一端を前記保持体の一方
に固定し、かつ、他端を前記保持体の他方に形成
した凹部内に差込み長さ変更自在に配置し、前記
弾性帯状体の夫々を、長手方向中間側ほど管半径
方向に突出するように彎曲形成したことにあり、
その作用効果は次の通りである。
The characteristic configuration of the present invention is that a main body that is equipped with a flaw detection sensor and can be moved freely within a pipe, a pair of front and rear holders, a flexible object that connects the holders, and
consisting of a number of elastic strips attached to the holder and arranged around the flexible object,
One end of each of the elastic band-like bodies is fixed to one side of the holding body, and the other end is inserted into a recess formed in the other side of the holding body so that the length can be changed freely, and each of the elastic band-like bodies is This is due to the fact that the tube is curved so that it protrudes in the radial direction toward the middle in the longitudinal direction.
Its effects are as follows.
つまり、本体を形成する一対の保持体、一個の
可撓性物体、適当数の弾性帯状体はいずれも単純
な形状で安価なものであり、また、それら構成部
材を単純に連結しただけの構造であるから、本体
構造を従来に比して極めて安価なものにできる。
In other words, the pair of holders, one flexible object, and a suitable number of elastic bands that form the main body are all simple in shape and inexpensive, and the structure is simply a combination of these components. Therefore, the main body structure can be made extremely inexpensive compared to the conventional one.
そして、彎曲形成されると共に周方向に並べら
れた弾性帯状体を備えさせ、管半径方向に突出す
る弾性帯状体の長手方向中間側を既設導管の内面
に接触させて、既設導管内面に対する探傷用セン
サーの位置を設定できるようにしてあるから、保
持体及び可撓性物体の外径を既設導管の内径より
も十分に小さくし、弾性帯状体どうしの隙間によ
つて流体輸送に対する抵抗を十分に小さくでき、
探傷時にも流体輸送を継続することが可能であ
る。 Then, curved elastic band-shaped bodies are arranged circumferentially, and the intermediate side in the longitudinal direction of the elastic band-shaped bodies protruding in the radial direction of the pipe is brought into contact with the inner surface of the existing conduit, so that flaw detection can be carried out on the inner surface of the existing conduit. Since the position of the sensor can be set, the outer diameter of the holder and flexible body should be sufficiently smaller than the inner diameter of the existing conduit, and the gaps between the elastic strips should provide sufficient resistance to fluid transport. Can be made small,
It is possible to continue fluid transport even during flaw detection.
さらに、既設導管の急激な曲り部を通過するに
際して、弾性帯状体の全てが保持体の一方だけに
固定されているために、弾性帯状体と可撓性物体
のいずれもが、他方による抵抗がほとんど無い状
態で容易かつ十分に変形し、本体全体が曲り部に
沿つて十分に撓み変形して、曲り部の通過を円滑
に行える。 Furthermore, when passing through a sharp bend in an existing conduit, since all of the elastic bands are fixed to only one side of the holder, both the elastic bands and the flexible object are not easily resisted by the other. The main body is easily and sufficiently deformed with almost no distortion, and the entire body is sufficiently deflected and deformed along the bend, allowing smooth passage through the bend.
その結果、経済面や補修面で有利な装置でもつ
て、既設導管の探傷を、流体輸送を継続しながら
でも、また、たとえ急激な曲がり部が存在して
も、容易かつ良好に行えるようになり、例えば都
市ガス導管や水道管等の保守作業を、経済性や作
業性や流体供給面等において有利に行えるように
なつた。
As a result, it has become possible to easily and successfully perform flaw detection in existing conduits, even while fluid transport continues, and even in the presence of sharp bends, using equipment that is advantageous from an economical and repair perspective. For example, maintenance work on city gas pipes, water pipes, etc. can now be carried out advantageously in terms of economy, workability, fluid supply, etc.
〔実施例〕 次に、第1図及び第2図により実施例を示す。〔Example〕 Next, an example will be shown with reference to FIGS. 1 and 2.
既設導管P内に適当な手段で予め通線した可撓
性牽引具や弾性撓み変形自在な押圧具1によつて
管内移動自在に形成した本体Aに、複数の過電流
式や超音波式等の適当な探傷センサーBを、管周
方向に並べた状態で取付け、管内移動に伴つて既
設導管Pの全体を探傷できる探傷装置を形成して
ある。 A plurality of overcurrent type, ultrasonic type, etc. Appropriate flaw detection sensors B are installed in a line in the pipe circumferential direction to form a flaw detection device that can detect flaws in the entire existing conduit P as it moves within the pipe.
前記本体Aを形成するに、前後一対の保持体2
a,2bどうしをコイルスプリング3で連結し、
コイルスプリング3を既設導管Pとほぼ同芯状に
支持するブラシ4a,4bを保持体2a,2b
夫々に取付け、保持体2a,2bに取付けられた
弾性帯状体5,6の多数を、コイルスプリング3
の周りに適当間隔で並べてある。弾性帯状体5,
6夫々の一端5a,6aを保持体の一方2a又は
2bに固定し、かつ、他端5b,6bを保持体の
他方2b又は2aに形成した凹部7内に差込長さ
変更自在に配置し、また、保持体2a,2bのい
ずれにおいても、その保持体2a又は2bに固定
された弾性帯状体5又は6と、その保持体2a又
は2bに差込まれた弾性帯状体6又は5を、保持
体周方向において交互に配置してある。 To form the main body A, a pair of front and rear holders 2 are used.
Connect a and 2b with a coil spring 3,
The brushes 4a and 4b that support the coil spring 3 substantially concentrically with the existing conduit P are held by the holders 2a and 2b.
The coil spring 3
They are arranged at appropriate intervals around the . elastic band-like body 5,
6, one end 5a, 6a of each is fixed to one side 2a or 2b of the holder, and the other end 5b, 6b is inserted into a recess 7 formed in the other 2b or 2a of the holder, so that the length can be changed freely. In addition, in both of the holders 2a and 2b, the elastic band 5 or 6 fixed to the holder 2a or 2b, and the elastic band 6 or 5 inserted into the holder 2a or 2b, They are arranged alternately in the circumferential direction of the holder.
弾性帯状体5,6夫々を、長手方向中間側ほど
管半径方向に突出するように彎曲形成すると共
に、長手方向中間側5c,6cよりも両端5a,
5b又は6a,6bが細くなる形状に形成し、管
の径変化や曲りによる弾性帯状体5,6の変形が
円滑に行われ、かつ、長手方向中間部5c,6c
の管との接触状態が維持されるように構成してあ
る。 Each of the elastic strips 5 and 6 is curved so that it protrudes in the tube radial direction toward the middle in the longitudinal direction, and the ends 5a,
5b or 6a, 6b are formed in a narrow shape so that deformation of the elastic band-like bodies 5, 6 due to changes in diameter or bending of the tube is performed smoothly, and longitudinally intermediate portions 5c, 6c are formed.
The structure is such that the contact state with the tube is maintained.
コイルスプリング3に弾性支持体8を嵌着し、
弾性帯状体5,6の長手方向中間部5c,6cと
弾性帯状体8の間に探傷用センサーBを配置し、
探傷用センサーBが、その外側の弾性帯状体5,
6と一体的に変位して、既設導管Pの内面に対す
る接近状態が維持されるように構成し、探傷精度
を向上できるようにしてある。探傷用センサーB
からのリード線9を、牽引具や押圧具1を通して
既設導管P外の適当な探傷器に接続してある。 Fitting the elastic support 8 to the coil spring 3,
A flaw detection sensor B is arranged between the longitudinal intermediate portions 5c and 6c of the elastic strips 5 and 6 and the elastic strip 8,
The flaw detection sensor B is attached to the outer elastic band 5,
6 and is configured to maintain a state of proximity to the inner surface of the existing conduit P, thereby improving flaw detection accuracy. Flaw detection sensor B
A lead wire 9 from the pipe is connected to a suitable flaw detector outside the existing conduit P through a pulling tool or a pressing tool 1.
次に別の実施例を説明する。 Next, another embodiment will be described.
本体Aを形成するに、形状、材質、その他にお
いて適宜変更が可能である。例えば、保持体2
a,2bや弾性帯状体5,6の形状を変更した
り、ブラシ4a,4bや弾性帯状体8を省略でき
る。また、弾性帯状体5,6の固定構造を変更し
てもよく、、例えば全ての弾性帯状体5.6を保
持体の一方2a又は2bに固定してもよい。さら
に、保持体2a,2bどうしを連結するに、例え
ばワイヤーやチエーン等をコイルスプリング3に
代えて設けてもよく、要するに可撓性物体3で連
結してあればよい。 When forming the main body A, the shape, material, etc. can be changed as appropriate. For example, holding body 2
The shapes of a, 2b and the elastic strips 5, 6 can be changed, or the brushes 4a, 4b and the elastic strips 8 can be omitted. Furthermore, the fixing structure of the elastic strips 5, 6 may be changed; for example, all the elastic strips 5, 6 may be fixed to one of the holders 2a or 2b. Further, to connect the holders 2a and 2b, for example, a wire or a chain may be provided instead of the coil spring 3, and in short, it is sufficient that the holders 2a and 2b are connected by the flexible object 3.
探傷用センサーBは種類、配置、情報回収手
段、その他において適当に選択でき、例えば、弾
性帯状体5.6の長手方向中間部5c,6cに探
傷用センサーBを埋込んでもよい。 The flaw detection sensor B can be appropriately selected in terms of type, arrangement, information collection means, etc., and for example, the flaw detection sensor B may be embedded in the longitudinally intermediate portions 5c and 6c of the elastic strip 5.6.
また、探傷用以外のセンサー、例えば視覚検査
用等を併わせ備えてもよい。 In addition, sensors other than those for flaw detection, such as those for visual inspection, may also be provided.
第1図は、本考案の実施例を示す断面図、第2
図は第1図の−線断面図である。
A……本体、B……探傷用センサー、2a,2
b……保持体、3……可撓性物体、5,6……弾
性帯状体、5a,5b,6a,6b……弾性帯状
体の端、5c,6c……弾性帯状体の長手方向中
間部、7……凹部。
Fig. 1 is a sectional view showing an embodiment of the present invention;
The figure is a sectional view taken along the line -- in FIG. 1. A...Body, B...Flaw detection sensor, 2a, 2
b...Holding body, 3...Flexible object, 5, 6...Elastic band-shaped body, 5a, 5b, 6a, 6b...End of elastic band-shaped body, 5c, 6c...Longitudinal middle of elastic band-shaped body Part, 7... recessed part.
Claims (1)
本体Aに、管に対する探傷用センサーBを取付
けた既設導管用探傷装置であつて、前記本体A
が、前後一対の保持体2a,2b、それら保持
体2a,2bどうしを連結する可撓性物体3、
並びに、前記保持体2a又は2bに取付けられ
ると共に前記可撓性物体3の周囲に並べられた
多数の弾性帯状体5,6から成り、それら弾性
帯状体5,6夫々の一端5a,6Aを前記保持
体の一方2a又は2bに固定し、かつ、他端5
b,6bを前記保持体の他方2b又は2aに形
成した凹部7内に差込み長さ変更自在に配置
し、前記弾性帯状体5,6の夫々を、長手方向
中間側ほど管半径方向に突出するように彎曲形
成してある既設導管用探傷装置。 前記弾性帯状体5,6夫々を、前記探傷用セ
ンサーBに対して外側近くで一体的変位自在に
配置された長手方向中間部5c,6cよりも両
端5a,5b又は6a,6bが細くなる形状に
形成してある実用新案登録請求の範囲第項に
記載の探傷装置。[Scope of Claim for Utility Model Registration] A flaw detection device for existing conduits, in which a sensor B for flaw detection on the pipe is attached to a main body A that is movable within the pipe using a pulling tool or a pressing tool, the main body A
However, a pair of front and rear holders 2a, 2b, a flexible object 3 connecting the holders 2a, 2b,
It also consists of a large number of elastic strips 5, 6 attached to the holder 2a or 2b and arranged around the flexible object 3, with one end 5a, 6A of each of the elastic strips 5, 6 attached to the holder 2a or 2b. It is fixed to one side 2a or 2b of the holding body, and the other end 5
b, 6b are inserted into a recess 7 formed in the other 2b or 2a of the holding body and are arranged so as to be freely variable in length, and each of the elastic band-like bodies 5, 6 protrudes toward the center in the longitudinal direction in the radial direction of the tube. A flaw detection device for existing conduits with a curved shape. Each of the elastic strips 5 and 6 has a shape in which both ends 5a and 5b or 6a and 6b are thinner than longitudinal intermediate portions 5c and 6c, which are disposed so as to be integrally displaceable near the outside with respect to the flaw detection sensor B. A flaw detection device according to claim 1 of the utility model registration claim formed in .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12831385U JPH0334694Y2 (en) | 1985-08-22 | 1985-08-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12831385U JPH0334694Y2 (en) | 1985-08-22 | 1985-08-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6235258U JPS6235258U (en) | 1987-03-02 |
JPH0334694Y2 true JPH0334694Y2 (en) | 1991-07-23 |
Family
ID=31023871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12831385U Expired JPH0334694Y2 (en) | 1985-08-22 | 1985-08-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0334694Y2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2566236B2 (en) * | 1987-04-10 | 1996-12-25 | 日本鋼管株式会社 | Pipeline inspection equipment |
JPH0628688Y2 (en) * | 1987-04-10 | 1994-08-03 | 日本鋼管株式会社 | Inspection pig insertion device |
JPH0726945B2 (en) * | 1989-06-23 | 1995-03-29 | 日本鋼管株式会社 | Pipeline inspection equipment |
JP4631208B2 (en) * | 2001-05-21 | 2011-02-16 | 株式会社Ihi | Tube flaw detector |
JP3810676B2 (en) * | 2001-12-06 | 2006-08-16 | バブコック日立株式会社 | Tube ultrasonic inspection equipment |
JP2009092576A (en) * | 2007-10-10 | 2009-04-30 | Chugoku Electric Power Co Inc:The | Ultrasonic test equipment |
JP6800448B2 (en) * | 2017-03-31 | 2020-12-16 | 国立研究開発法人産業技術総合研究所 | Rotational drive type tapping mechanism |
-
1985
- 1985-08-22 JP JP12831385U patent/JPH0334694Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6235258U (en) | 1987-03-02 |
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