JPS6319552A - Intra-tube inspecting device - Google Patents
Intra-tube inspecting deviceInfo
- Publication number
- JPS6319552A JPS6319552A JP61164410A JP16441086A JPS6319552A JP S6319552 A JPS6319552 A JP S6319552A JP 61164410 A JP61164410 A JP 61164410A JP 16441086 A JP16441086 A JP 16441086A JP S6319552 A JPS6319552 A JP S6319552A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- inspected
- main body
- detectors
- curves
- 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
- 238000007689 inspection Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は、気体および液体などを輸送するための管を内
面から検査するための管内検査装置に関する。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to an in-pipe inspection device for inspecting a pipe for transporting gas, liquid, etc. from the inside.
背景技術
従来から、たとえば地中埋設鋼管などを、超音波や電磁
界を発生して管の内面から非破壊検査を行なっている。BACKGROUND ART Conventionally, for example, underground steel pipes have been nondestructively inspected from the inner surface of the pipe by generating ultrasonic waves or electromagnetic fields.
発明が解決すべき問題点
このような非破壊検査は、管の周方向全面にわたって一
挙に検査することが望まれる。先行技術では、管の内面
を検査する検出器が周方向に間隔をあけて配置されて、
本体に取付けであるので、管の内面全面にわたって検査
することができなかった。Problems to be Solved by the Invention In such non-destructive testing, it is desirable to test the entire circumferential surface of the pipe at once. In the prior art, detectors for inspecting the inner surface of the tube are spaced circumferentially,
Since it was attached to the main body, it was not possible to inspect the entire inner surface of the tube.
本発明の目的は、管の管軸方向の移動に伴なって、管の
内面全面にわたって検査を一挙に行なうことができるよ
うにした管内ネ★査装置を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a pipe inspection device that can inspect the entire inner surface of a pipe at once as the pipe moves in the axial direction.
問題点を解決するための手段
本発明は、本体の周方向に間隔をあけてかつ半径方向に
変位可能に複数のそりを設け、前記そりは、本体の軸線
方向に対して傾斜した角度を有する部分を備えており、
各傾斜部分において１肖記軸線方向に間隔をあけて複数
の検出器を設けることを特徴とする管内検査装置である
。Means for Solving the Problems The present invention provides a plurality of sleds spaced apart in the circumferential direction of the main body and displaceable in the radial direction, the sleds having an angle inclined with respect to the axial direction of the main body. It has a part,
This is an in-pipe inspection device characterized in that a plurality of detectors are provided at intervals in the axial direction in each inclined portion.
作 用
本発明に従えば、本体の周方向に間隔をあけて設けられ
たそりは、本体の軸線方向に対して傾斜した角度を有す
る部分を備えており、各傾斜部分において本体の軸線方
向に間隔をあけて複数の検出器が設けられる。したがっ
て各検出器によって検査される管の内面の周か向のｍ域
がごく近接し、あるいは相互に部分的に重なることが可
能になろ。According to the present invention, the sleds provided at intervals in the circumferential direction of the main body include portions that are inclined at an angle with respect to the axial direction of the main body, and the sleds are provided at intervals in the axial direction of the main body at each inclined portion. A plurality of detectors are provided at intervals. Therefore, it is possible for the circumferential m regions of the inner surface of the tube to be inspected by each detector to be very close to each other or to partially overlap each other.
そのため、本体をＷｌｔｍに沿って移動することによっ
て、管の内面を全周にわたって一挙に検査することがで
きる。Therefore, by moving the main body along Wltm, the inner surface of the tube can be inspected all around at once.
実施例
第１図は本発明の一実施例の管内検査装置の断面図であ
り、第２図はその軸直角断面図である。Embodiment FIG. 1 is a cross-sectional view of a pipe inspection apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view perpendicular to the axis thereof.
、この管内検査装置は、基本的には、本体１と、この本
体１の周方向に間隔をあけて配置される複数のそり２と
、このそり２を本体１の半径方向に変位可能にして弾発
的に支持する手段３とを有する。, this pipe inspection device basically includes a main body 1, a plurality of sleds 2 arranged at intervals in the circumferential direction of the main body 1, and the sleds 2 displaceable in the radial direction of the main body 1. and resiliently supporting means 3.
支持手段３は、本体２を半径方向に間隔をあけて外囲し
周方向に無端状である７フーデイオン状の板ばねから成
る弾発部材４と、この弾発部材４と本体１とを本体１の
軸線に垂直な軸線まわりに角変位可能に支持するピアノ
線などから成るリンク５と、弾発部材４にそり２を固定
する棒状の固定片６とを有する。The support means 3 includes a resilient member 4 made of a seven-hoodion-shaped leaf spring that surrounds the main body 2 at intervals in the radial direction and is endless in the circumferential direction, and a resilient member 4 and the main body 1. The sled 2 has a link 5 made of a piano wire or the like that supports the sled 2 so as to be angularly displaceable around an axis perpendicular to the axis of the sled 2, and a rod-shaped fixing piece 6 that fixes the sled 2 to the resilient member 4.
第３図は第１図に示された管内検査装置の一部の周方向
展開図であり、第４図はそり２と弾発部材４との周方向
展開図である。そり２は、その両端部７，８が本体１の
半径方向内方に湾曲しでおり、両端部７．８間の傾斜部
分っけ、本体１の軸線方向（ｔ５３図の左右方向）に対
して角度θだけ傾斜している。この傾斜部分つにおいて
、半径方向内方側、すなわち本体１ｇＡの表面には、面
記袖線方向に間隔をあけて２つの検出器Ｓ１．Ｓ２が固
定される。そり２は、非磁性金属、たとえば銅およびス
テンレス鋼などから成る。検出器Ｓｌ、Ｓ２は、七り２
の半径方向外方側、すなわち本体１とは反対側の表面が
、検査されるべき管１０の内面に接触している状態にお
いて、周方向（ｆ：ｔＳ３図の上下方向）に相互にごく
近接し、または部分的に重なった検査領域Ａ１ ＊ Ａ
２で管の内面の検査を行なうことができる１本体１に
は、ケーブル１１が取付けられ、各検出器Ｓｌ、Ｓ２毎
にリード９１２．１３が個別的に接続される。管１０を
、いわゆる軸通電法によって非破壊検査するときには、
検出器Ｓ１．Ｓ２は、磁気を検出するホール素子などで
あってもよい。3 is a developed view in the circumferential direction of a part of the pipe inspection device shown in FIG. 1, and FIG. 4 is a developed view in the circumferential direction of the sled 2 and the resilient member 4. The sled 2 has both ends 7 and 8 curved inward in the radial direction of the main body 1, and the inclined portion between the two ends 7 and 8 is curved with respect to the axial direction of the main body 1 (left and right direction in figure t53). and is inclined by an angle θ. In this inclined portion, on the radially inner side, that is, on the surface of the main body 1gA, two detectors S1. S2 is fixed. The sled 2 is made of non-magnetic metal, such as copper and stainless steel. Detectors Sl and S2 are seven
are in close proximity to each other in the circumferential direction (f: up and down direction in tS3 figure) in a state in which the radially outward sides of the or partially overlapped inspection area A1*A
A cable 11 is attached to the main body 1, and a lead 912.13 is individually connected to each detector Sl, S2. When the pipe 10 is non-destructively tested by the so-called axial energization method,
Detector S1. S2 may be a Hall element or the like that detects magnetism.
本件管内検査１置を管１０内に挿入し、ｌｆｆ軸に沿っ
て走行する状態は、前述の第１図に示されているとおり
であり、管１０の内径が小さいときには第５図のとおり
となる。弾発部材４の働きによって、そり２はｇｉｏの
内面に弾発的に接触し、本体１の走行に伴って、管１０
の内面に摺接する。The state in which the pipe inspection unit 1 is inserted into the pipe 10 and runs along the lff axis is as shown in Fig. 1 above, and when the inner diameter of the pipe 10 is small, it is as shown in Fig. 5. Become. Due to the action of the elastic member 4, the sled 2 elastically contacts the inner surface of the gio, and as the main body 1 moves, the tube 10
Slides into contact with the inner surface of the
軸通電法に従い、’１７１０にその管軸に沿って電流を
流し、検ｉｆｉ域Ａ Ｉ 、Ａ ２ 全検出Ｗｓ １
、Ｓ ２ ニよって磁気的に検出することによって、欠
陥の有無などを、管１０の内面全面にわたって検査する
ことができる。According to the shaft energization method, a current is passed along the tube axis at '1710, and the detection area A I , A 2 total detection Ws 1
, S 2 D, the entire inner surface of the tube 10 can be inspected for the presence or absence of defects.
第６図は本発明の池の実施例の管内検査！＆置の断面図
であり、第７図はその正面図である４本体１４は、コイ
ル１５と、ヨーク１Ｇと、強磁性材料がら成る環状の一
対の取付片１７．１８と、強磁性材料から成る環状の一
対のブラシ１９．２０とを含み、いわゆる極間法によっ
て管１０の内面を検査することができる。ブラシ１９．
２０間には、第８図に平面が示されるそり２１が周方向
に 。Figure 6 shows an inside pipe inspection of an embodiment of the pond of the present invention! The main body 14 includes a coil 15, a yoke 1G, a pair of annular mounting pieces 17 and 18 made of ferromagnetic material, and FIG. The inner surface of the tube 10 can be inspected by a so-called interpolar method. Brush 19.
Between 20 and 20, there is a sled 21 whose plane is shown in FIG. 8 in the circumferential direction.
間隔をあけて配置される。そ９２１は、前述の実施例に
おけるそワ２と同様に、湾曲した両端部２２．２３と、
傾斜部分２４とを有する。傾斜ｇ分２４は、本体１４の
軸線に対して角度θを有する。placed at intervals. The sleeve 921 has curved opposite ends 22, 23, similar to the sleeve 2 in the previous embodiment.
It has an inclined portion 24. The slope g 24 has an angle θ with respect to the axis of the main body 14 .
この傾斜部分２．１には、検出３Ｓ１．Ｓ２が取付けら
れる。This inclined portion 2.1 includes detection 3S1. S2 is installed.
そり２１は、前述の実施例と同様な環状の弾発部材２５
によって、周方向に弾発的に付勢される。The sled 21 has an annular resilient member 25 similar to the previous embodiment.
is resiliently biased in the circumferential direction.
この弾発部材２５は、長孔２Ｇを有するリンク２７と、
その長孔２Ｇに緩挿しＩ！ｌＩＬ発部材２５に固定され
たビン２８と、長孔２６に緩挿し取付片１７゜１８に固
定されろもう１つのピン２９との組介せによって、本体
１４に半径方向−二変位可能にして設けられる。その他
の構成は、前述の実施例と同様である。This elastic member 25 includes a link 27 having a long hole 2G,
Loosely insert it into the long hole 2G! By combining the pin 28 fixed to the IL generating member 25 and another pin 29 which is loosely inserted into the elongated hole 26 and fixed to the mounting piece 17° 18, the main body 14 can be displaced in the radial direction. provided. The other configurations are similar to those of the previous embodiment.
フィルｔＳ＋二文？！電流を流すことによって、強磁性
材料たとえば鋼などから成る管１０を通る磁路が形成さ
れる。管１０の磁路における磁界の変化、すなわちｆｆ
１０の欠陥は、検出ｉｓ１．ｓ２によって検出される。Phil tS + two sentences? ! By passing an electric current, a magnetic path is created through the tube 10, which is made of a ferromagnetic material, such as steel. The change in the magnetic field in the magnetic path of the tube 10, i.e. ff
10 defects are detected is1. s2 is detected.
本体１４のリング状連結部３４ 、、３５に索条を連結
して管１０内を走行させることによって、管１０の内面
全面を一挙に検査することができる。By connecting cables to the ring-shaped connecting parts 34, 35 of the main body 14 and running them inside the pipe 10, the entire inner surface of the pipe 10 can be inspected at once.
第９図は、本発明のさらに池の実施例の弾発部材３０の
簡略化した軸直角断面図である。弾発部材３０は、Ｗ字
状を有ｒる複数の板ばねから成り、そり３１に連結され
る。FIG. 9 is a simplified axial cross-sectional view of a resilient member 30 according to a further embodiment of the present invention. The resilient member 30 is made up of a plurality of leaf springs having a W-shape, and is connected to the sled 31.
第１０図は、本発明の他の実施例の弾発部材３２の簡略
化した軸直角断面図である６弾発部材３２は、複数のフ
ィルばねから成り、そり３３に連結される。FIG. 10 is a simplified axis-perpendicular cross-sectional view of a resilient member 32 according to another embodiment of the present invention.6 The resilient member 32 is composed of a plurality of fill springs and is connected to a sled 33.
検出１ｌＢｓ１．ｓ２は、磁気を検出する構成を有する
ものの他に、超音波を発生／検出するものであってもよ
く、その池の構成を有しているものであってもよい。Detection 1lBs1. In addition to having a configuration for detecting magnetism, s2 may also be one that generates/detects ultrasonic waves, and may have a pond configuration.
そり２，２１．３１．３３ を半径方向に変位可能に
して弾発的に付勢するために、その他の構成がとられて
もよい。Other configurations may be used to make the sled 2, 21, 31, 33 radially displaceable and elastically biased.
効 果
以上のように本発明によれば、管の内面全面を一挙に１
Ｉｊ２査することが可能になり、検査の（ｉ ｆｒｔ性
が向上するとともに、ｆヤ業性が向」−する。しかも本
体を管軸に一致した軸線を保つように、いわゆるセンタ
リングを達成することが可能である。そのため本体にテ
レビカメラなどを取付けたとき、管の内面を正確に撮像
することなどが可能になり、用途が拡大される。Effects As described above, according to the present invention, the entire inner surface of the pipe can be covered at once.
This makes it possible to perform IJ2 inspection, which improves inspection efficiency and improves workability.Moreover, it is possible to achieve so-called centering so that the axis of the main body is kept in line with the tube axis. Therefore, when a television camera or the like is attached to the main body, it becomes possible to accurately image the inner surface of the tube, expanding the range of uses.
ｆＩＳ１図は本発明の一実施例の管内検査装置の断面図
、第２図は第１図の実施例の軸直角断面図、第３図は第
１図の実施例の一部の周方向展開図、ｔｊＳ４図は第１
図の実施例におけるそり２と弾発部材４と周方向の展開
図、第５図は検査される管の内径が小さいときの第１図
に示される管内検査の断面図、第６図は本発明の他の実
施例の管内面検査装置の縦断面図、第７図は第６図の実
施例の正面図、第８図は第６図の実施例におけるそり２
１の拡大平面図、ｉ＠９図は本発明のさらに他の実施例
の弾発部材３０の簡略化した軸直角断面図、第１０図は
本発明の池の実施例の弾発部材３２の簡、路地した軸直
角断面図である。
１．１４・・・本体、２，２１，３１．３３・・・そり
、４゜２５．３０．３２・・・弾発部材、９．２４・・
・傾斜部分、Ｓ １ 、Ｓ ２・・・検出器
代理人 弁理士 画数 圭一部
第１図
第２図
’Ｎ ３図
第５図
第９図
第１０図Fig. fIS1 is a cross-sectional view of a pipe inspection device according to an embodiment of the present invention, Fig. 2 is a cross-sectional view perpendicular to the axis of the embodiment of Fig. 1, and Fig. 3 is a circumferential development of a part of the embodiment of Fig. 1. Figure, tjS4 figure is the first
FIG. 5 is a cross-sectional view of the pipe interior inspection shown in FIG. 1 when the inner diameter of the pipe to be inspected is small, and FIG. A vertical sectional view of a pipe inner surface inspection device according to another embodiment of the invention, FIG. 7 is a front view of the embodiment of FIG. 6, and FIG. 8 is a sled 2 in the embodiment of FIG. 6.
FIG. 1 is an enlarged plan view of FIG. 1, FIG. FIG. 1.14...Main body, 2,21,31.33...Sled, 4゜25.30.32...Bulging member, 9.24...
・Slanted portion, S 1, S 2...Detector agent Patent attorney Number of strokes Keiichi Figure 1 Figure 2 'N 3 Figure 5 Figure 9 Figure 10
Claims (1)
複数のそりを設け、前記そりは、本体の軸線方向に対し
て傾斜した角度を有する部分を備えており、各傾斜部分
において前記軸線方向に間隔をあけて複数の検出器を設
けることを特徴とする管内検査装置。A plurality of sleds are provided at intervals in the circumferential direction of the main body and are displaceable in the radial direction, and each of the sleds includes a portion having an angle inclined with respect to the axial direction of the main body, and the sled is provided with a portion inclined at an angle with respect to the axial direction of the main body, and the sled is provided with a plurality of sleds disposed at intervals in the circumferential direction of the main body and displaceable in the radial direction. An in-pipe inspection device characterized in that a plurality of detectors are provided at intervals in the direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164410A JPS6319552A (en) | 1986-07-12 | 1986-07-12 | Intra-tube inspecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164410A JPS6319552A (en) | 1986-07-12 | 1986-07-12 | Intra-tube inspecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6319552A true JPS6319552A (en) | 1988-01-27 |
Family
ID=15792612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61164410A Pending JPS6319552A (en) | 1986-07-12 | 1986-07-12 | Intra-tube inspecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932364A (en) * | 1988-10-05 | 1990-06-12 | Kioritz Corporation | Internal combustion engine |
| JP2016505134A (en) * | 2013-11-23 | 2016-02-18 | 清華大学Ｔｓｉｎｇｈｕａ Ｕｎｉｖｅｒｓｉｔｙ | Internal detector for subsea oil and gas pipelines |
-
1986
- 1986-07-12 JP JP61164410A patent/JPS6319552A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932364A (en) * | 1988-10-05 | 1990-06-12 | Kioritz Corporation | Internal combustion engine |
| JP2016505134A (en) * | 2013-11-23 | 2016-02-18 | 清華大学Ｔｓｉｎｇｈｕａ Ｕｎｉｖｅｒｓｉｔｙ | Internal detector for subsea oil and gas pipelines |
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