JPH0544780Y2 - - Google Patents
Info
- Publication number
- JPH0544780Y2 JPH0544780Y2 JP16434586U JP16434586U JPH0544780Y2 JP H0544780 Y2 JPH0544780 Y2 JP H0544780Y2 JP 16434586 U JP16434586 U JP 16434586U JP 16434586 U JP16434586 U JP 16434586U JP H0544780 Y2 JPH0544780 Y2 JP H0544780Y2
- Authority
- JP
- Japan
- Prior art keywords
- probe
- case
- guide
- tube
- circumferential surface
- 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 - Lifetime
Links
- 239000000523 sample Substances 0.000 claims description 88
- 238000001514 detection method Methods 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000003825 pressing Methods 0.000 description 21
- 238000005259 measurement Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 238000005219 brazing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method 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)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、超音波探触子の保持構造に係わり、
特に管材のろう付された接合部を内周から探傷す
るのに好適な探触子の保持構造に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a holding structure for an ultrasonic probe.
In particular, the present invention relates to a probe holding structure suitable for inspecting brazed joints of pipe materials from the inner periphery.
管材の探傷は、従来から管成形時の溶接部を主
な対象として行われ、しかも自動探傷が採用され
ているが、送水管、送油管等のフランジ部のろう
付された接合部の探傷は、管径が比較的小寸法で
あることから従来から探触子を手動走査して行わ
れていた。第４図および第５図により従来の探傷
方法を説明する。図において１は管継手、１ａは
その端面、２は端部が管継手１に嵌入された厚さ
tpの管、３は管継手１と管２の接合部をろう付す
るろう材である。４は探触子で、管２の内周面２
ａに検査者の手により当接されており図示しない
超音波探傷器と高周波ケーブル５で接続されてい
る。探触子４より前記接合部に向けて超音波を入
射すると、接合部が完全にろう材３でろう付され
ている場合は、超音波探傷器のCRTに送信パル
スのほか管継手１の外周から反射する反射波Ｂの
エコー（Ｂエコー）が得られるだけであり、第５
図に示すように完全にろう付されておらず、ろう
材３が欠けているボイド部３ａが存在する場合
は、ボイド部３ａの位置の管２の外周からの反射
波Ｆのエコー（Ｆエコー）が前記Ｂエコーの前に
出現する。そしてこのＦエコーはボイド部３ａが
大きくなるほどレベルが高くなり、そのレベルを
測定することによりボイド部３ａの大きさを知る
ことができろう付の合否を判定する。
Flaw detection of pipe materials has traditionally been carried out mainly on welded parts during pipe forming, and automatic flaw detection has been adopted, but flaw detection on brazed joints of flanges of water pipes, oil pipes, etc. Since the tube diameter is relatively small, manual scanning with a probe has traditionally been performed. A conventional flaw detection method will be explained with reference to FIGS. 4 and 5. In the figure, 1 is the pipe fitting, 1a is its end surface, and 2 is the thickness of the end fitted into the pipe fitting 1.
The tp pipe 3 is a brazing material for brazing the joint between the pipe joint 1 and the pipe 2. 4 is a probe, which is attached to the inner peripheral surface 2 of the tube 2.
a by the hand of the inspector, and is connected to an ultrasonic flaw detector (not shown) via a high frequency cable 5. When ultrasonic waves are injected from the probe 4 toward the joint, if the joint is completely brazed with the filler metal 3, the CRT of the ultrasonic flaw detector receives the transmitted pulse as well as the outer periphery of the pipe joint 1. Only the echo of the reflected wave B (B echo) reflected from the 5th
As shown in the figure, if there is a void 3a that is not completely brazed and the brazing material 3 is missing, the echo of the reflected wave F from the outer periphery of the tube 2 at the position of the void 3a (F echo ) appears before the B echo. The level of this F echo becomes higher as the void portion 3a becomes larger, and by measuring the level, the size of the void portion 3a can be known and it is possible to judge whether or not the brazing is successful.
しかし前記した測定位置に検査者の手または指
により探触子４を当接して行う探傷においては、
探傷面に探触子４を均等に当接しにくく片当たり
が生じやすいこと、押付け力を一定に保持するこ
とが困難であることのほか、探触子４を所望の測
定位置にセツトしにくいなどの問題があり、正確
な測定ができない不具合がある。 However, in the flaw detection performed by touching the probe 4 with the inspector's hand or finger at the measurement position described above,
It is difficult to contact the probe 4 evenly with the testing surface, uneven contact tends to occur, it is difficult to maintain a constant pressing force, and it is difficult to set the probe 4 at the desired measurement position. There is a problem with this, which prevents accurate measurements.
前記の如く管材のろう付された接合部の従来の
探傷は、管材の内周から探触子を測定位置に検査
者の手または指により押し付けた状態で行つてい
たから、探触子の片当たり、押付け力の不同のほ
か所望の測定位置に正しくセツトできない場合が
あり、正確な合否判定ができない問題点を有して
いた。
As mentioned above, conventional flaw detection of brazed joints of pipe materials was carried out by pressing the probe from the inner periphery of the pipe material to the measurement position by the inspector's hand or finger. In addition to discrepancies in pressing force, there are cases in which it cannot be set correctly at the desired measurement position, and there have been problems in that accurate pass/fail determination cannot be made.
本考案は前記従来技術の問題点を解消するもの
であつて、管材のろう付された接合部の探傷を、
探触子を所望の測定位置に正しくセツトし、一定
の押付け力を保持して正確かつ容易に行うことが
できる探触子の保持構造を提供することを目的と
する。 The present invention solves the problems of the prior art, and is capable of detecting flaws in brazed joints of pipe materials.
It is an object of the present invention to provide a probe holding structure that can accurately and easily set a probe at a desired measurement position and maintain a constant pressing force.
本考案は、前面に管の内周面探傷用の探触子を
取付け、背面に前記探触子を管内周面に直角方向
に移動させるためのガイドを設けた探触子ホルダ
と、円筒体の一端部に切欠き部を設け、該切欠き
部に前記探触子ホルダのガイドを案内する案内部
を形成するとともに前記探触子ホルダを背面から
押圧して探触子を前記管内周面に当接させるばね
を設けたケースと、先端部を前記探触子ホルダに
係合するとともに中間部を前記ケースにピンを介
して揺動可能に支承し、他端部を揺動操作可能に
前記ケース外に突出させ前記中間部のピンの回り
に揺動させたとき前記探触子ホルダを介して前記
ばねを伸縮させるレバーと、前記ケースの軸線方
向に相対移動可能に、かつ任意の相対移動位置に
て前記ケースの軸線の回りに該ケースと一体に回
動可能な探触子の位置決め手段とを備えた探触子
の保持構造とし、前記探触子の位置決め手段を、
片面に角度目盛を表示するとともに内周面にねじ
を形成したドーナツ状のフランジと、該フランジ
に形成されたねじと螺合可能なねじを外周面に形
成した前記ケースと、該ケースと前記フランジと
を任意の螺合位置にて一体に係止可能な係止手段
とからなる構成にしたことにより、管材のろう付
された接合部の探傷を、所望の測定位置に探触子
を正しくセツトし、一定の押付け力を保持して正
確かつ容易にできるようにしたものである。
The present invention consists of a probe holder with a probe for flaw detection on the inner circumferential surface of a tube attached to the front surface, a guide for moving the probe in a direction perpendicular to the inner circumferential surface of the tube on the back side, and a cylindrical body. A notch is provided at one end, and a guide part for guiding the guide of the probe holder is formed in the notch, and the probe holder is pressed from the back side to move the probe to the inner peripheral surface of the tube. a case provided with a spring that is brought into contact with the probe holder; a tip portion that engages with the probe holder; an intermediate portion that is swingably supported in the case via a pin; and the other end that can be swingably operated. a lever that extends and contracts the spring via the probe holder when the lever projects out of the case and swings around the pin in the intermediate portion; A probe holding structure includes a probe positioning means that is rotatable integrally with the case around the axis of the case at a moving position, and the probe positioning means includes:
A donut-shaped flange that displays an angle scale on one side and has a thread formed on its inner peripheral surface, the case that has a screw formed on its outer peripheral surface that can be screwed with the screw formed on the flange, and the case and the flange. and a locking means that can be locked together at any screwed position, it is possible to correctly set the probe at the desired measurement position for flaw detection of brazed joints of pipe materials. It maintains a constant pressing force and can be done accurately and easily.
筒形状のケースの一端側の切欠き部に、探触子
ホルダに保持された探触子を装着し該探触子側か
ら被検体である管材の内部に嵌入する。この場合
探触子ホルダは前記ケースの端部に設けられてい
る案内部に沿つて摺動可能になつており、その摺
動方向はケースの軸線と直角方向で、その摺動方
向にかつ前記切欠き部の外方に向けて一定の押圧
力で押されているから、探傷面である管内周面に
当接させる探触子の前面はケースの外周より突出
し管内に嵌入しにくくなる。このため前記押圧力
の反対方向から力を加えて、探触子の前面がケー
スの外周より内側に入るように探触子ホルダを摺
動させ、管内への嵌入時に探触子が管内周面と接
触しないようにする。探触子がケースとともに被
検体内に嵌入されると、ケースに設けられている
位置決め手段により被検体の端面から探触子まで
の寸法が予め決められているから、ケースは探触
子と被測定位置とが相対した位置に正確に静止さ
せられる。この状態で前記押圧力と反対方向の力
を除去すると、探触子は管内周の被測定位置に一
定の押圧力で当接させられ探傷が行われる。この
押圧力は任意に調整可能で被検体の種類に応じて
調整される。測定始点の探傷が終り次の測定位置
に移る場合は、探触子を押圧している押圧力を解
除して探触子を管内への嵌入時と同位置まで探触
子ホルダとともに摺動させ、ケースを所望の角度
だけ回転させる。そして、前記押圧力を作用させ
て探傷を行い以下一周するまで繰り返される。
A probe held by a probe holder is attached to a notch on one end side of the cylindrical case, and the probe is inserted from the probe side into the inside of the tube material to be examined. In this case, the probe holder is slidable along a guide provided at the end of the case, the sliding direction being perpendicular to the axis of the case, and Since the probe is pushed outward from the notch with a constant pressing force, the front surface of the probe that is brought into contact with the inner circumferential surface of the tube, which is the flaw detection surface, protrudes beyond the outer circumference of the case, making it difficult to fit into the tube. Therefore, by applying a force in the opposite direction to the above-mentioned pressing force, the probe holder is slid so that the front surface of the probe enters inside the outer circumference of the case. Avoid contact with. When the probe is inserted into the subject together with the case, the dimension from the end of the subject to the probe is predetermined by the positioning means provided in the case, so the case will fit between the probe and the subject. It can be accurately stopped at a position opposite to the measurement position. In this state, when the force in the opposite direction to the pressing force is removed, the probe is brought into contact with the position to be measured on the inner periphery of the tube with a constant pressing force, and flaw detection is performed. This pressing force can be arbitrarily adjusted and is adjusted depending on the type of subject. When the flaw detection at the measurement starting point is finished and you want to move to the next measurement position, release the pressing force that is pressing the probe and slide the probe together with the probe holder to the same position as when it was inserted into the pipe. , rotate the case by the desired angle. Then, the pressing force is applied to perform flaw detection, and the process is repeated until one round is completed.
つぎに被検体の端面から測定位置までの寸法、
つまり探触子の管の軸線方向の位置が位置決め手
段により変えられ、前記した探傷が繰り返される
ことにより管材のろう付された接合部全周が正確
かつ容易に探傷される。 Next, the dimensions from the end surface of the object to the measurement position,
That is, the position of the probe in the axial direction of the tube is changed by the positioning means, and the above-described flaw detection is repeated, so that the entire circumference of the brazed joint of the tube material can be accurately and easily detected.
本考案の実施例を第１図ないし第３図を参照し
て説明する。第１図はその側断面図、第２図は第
１図の−断面図、第３図は第１図の−断
面図である。図において第４図および第５図と同
一符号のものは同じものを示す。６は円筒形のケ
ースで、一端側に切欠き部６ａを有し、切欠き部
６ａ側のケース６の端部には案内部６ｂが加工さ
れている。案内部６ｂはケース６の軸線と直角
で、かつ切欠き部６ａの中央に間隔を設けて穿設
された２つの穴である。さらに該端部には案内部
６ｂの２つの穴のほぼ中間でかつ案内部６ｂと平
行にばね７が嵌装される穴６ｃが穿設されてお
り、穴６ｃの外端側にはばね座８が螺合されるね
じが設けられている。９は探触子ホルダで、断面
がコの字形をしており、その内側に嵌入された探
触子４がビス等で一体に取付けられる。探触子ホ
ルダ９の背面には前記案内部６ｂにほとんど隙間
のない状態で嵌入される直径のガイドピン９ａが
突設され、またガイドピン９ａに平行にばね７の
内周をガイドする棒状のばねガイド９ｂも突設さ
れている。一方、探触子ホルダ９の両外側面に
は、ガイドピン９ａに直交して突出させたピン９
ｃが固着されている。１０は探触子４および探触
子ホルダ９の受け台で、両者の外端面と接触した
状態でケース６に着脱可能に締結されている。１
１はレバーで、片端に設けたフオーク部が探触子
ホルダ９のピン９ｃに嵌合し、他端はケース６の
外部より手動操作できるようにケース６内を通つ
て外に突出しており、中間部はケース６を前記ピ
ン９ｃに平行に貫通させたピン１２により支承さ
れている。第１図の実線で示すレバー１１の位置
は、探触子ホルダ９がその背面をばね７により押
圧され、探触子４の前面４ａが管２の内周面２ａ
に当接されている状態で、図の矢印方向に操作し
て鎖線の位置にすると、ばね７が圧縮されて押圧
力が解除され探触子前面４ａは管内周面２ａから
離れる。１３は位置決め手段のドーナツ状のフラ
ンジで、その中心部はケース６の中間部外周に設
けられているねじに螺合するようにねじ加工され
ており、ケース６と螺合した状態で図示しない係
止手段により一体に係止されて管継手１の端面１
ａ上に当接される。フランジ１３の表面外周部に
は所望のピツチの角度表示の刻印１３ａが設けら
れており、フランジ１３をケース６と一体で回動
させたとき管継手１との相対角度変位が目視でき
るようになつている。
An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a side sectional view thereof, FIG. 2 is a sectional view taken from FIG. 1, and FIG. 3 is a sectional view taken from FIG. 1. In the figure, the same reference numerals as in FIGS. 4 and 5 indicate the same thing. Reference numeral 6 denotes a cylindrical case, which has a notch 6a on one end side, and a guide portion 6b is machined at the end of the case 6 on the side of the notch 6a. The guide portion 6b is two holes perpendicular to the axis of the case 6 and spaced apart from each other in the center of the notch portion 6a. Further, a hole 6c into which a spring 7 is fitted is bored at the end, approximately in the middle of the two holes of the guide part 6b and parallel to the guide part 6b, and a spring seat is provided on the outer end side of the hole 6c. 8 is screwed into the screw. Reference numeral 9 denotes a probe holder, which has a U-shaped cross section, and the probe 4 fitted inside the probe holder is integrally attached with screws or the like. A guide pin 9a with a diameter that fits into the guide portion 6b with almost no gap is provided on the rear surface of the probe holder 9, and a rod-shaped guide pin 9a is provided to guide the inner periphery of the spring 7 parallel to the guide pin 9a. A spring guide 9b is also provided in a protruding manner. On the other hand, on both outer surfaces of the probe holder 9, pins 9 are provided which protrude perpendicularly to the guide pin 9a.
c is fixed. Reference numeral 10 denotes a cradle for the probe 4 and the probe holder 9, which is removably fastened to the case 6 while being in contact with the outer end surfaces of both. 1
1 is a lever, a fork part provided at one end fits into a pin 9c of the probe holder 9, and the other end protrudes outside through the case 6 so that it can be manually operated from the outside of the case 6; The intermediate portion is supported by a pin 12 extending through the case 6 in parallel to the pin 9c. The position of the lever 11 shown by the solid line in FIG.
When the probe is moved in the direction of the arrow in the figure to the position indicated by the chain line, the spring 7 is compressed, the pressing force is released, and the front surface 4a of the probe separates from the inner circumferential surface 2a of the tube. Reference numeral 13 denotes a donut-shaped flange of the positioning means, the center of which is threaded to engage with a screw provided on the outer periphery of the intermediate portion of the case 6. The end face 1 of the pipe fitting 1 is integrally locked by the locking means.
It is brought into contact with a. An inscription 13a indicating a desired pitch angle is provided on the outer periphery of the surface of the flange 13, so that when the flange 13 is rotated together with the case 6, the relative angular displacement with the pipe fitting 1 can be visually observed. ing.
前記構成の探触子の保持構造を組み立て、レバ
ー１１を第１図に示す鎖線の位置の状態にして探
触子４を管継手１と管２の接合部に対してケース
６とともに嵌入する。この場合、探触子４の前面
４ａに管内周面２ａより離れており、非接触状態
で挿入することができる。そして、探触子４の位
置は、探触子４と所望の被測定位置とが正しく相
対するように、予め管継手端面１ａから探触子４
までの寸法がフランジ１３をケース６に螺合した
係止位置によつて決められており、フランジ１３
を管継手端面１ａに当接するだけで所望の位置に
設置される。この状態でレバー１１を検査者の手
から離してフリーにすると、探触子ホルダ９がば
ね７により押圧され探触子ホルダ９に一体に取付
けられている探触子４の前面４ａが管内周面２ａ
に当接させられ、レバー１１はピン１２を支点に
して僅かに回動し第１図の実線で示す位置にな
る。ばね７の押圧力はばね座８の位置を変えるこ
とにより任意に調整され、探触子４と管内周面２
ａとの間の接触圧力が一定になるようにしている
が、管２の直径や管内周面２ａの加工程度など被
検体の種類に応じてばね定数を変えて調整するこ
とも容易である。探触子ホルダ９および探触子４
は、移動の際ガイドピン９ａが案内部６ｂに沿つ
て摺動し、同時に受け台１０とも摺動し、前後左
右各方向に対してほとんど隙間のない状態で円滑
に移動させられるから、レバー１１を第１図の鎖
線位置から実線のフリー状態にすることにより常
に同じ方向へ正しく移動し、しかも一定の押圧力
で押圧されることになる。探傷は管２の接合部の
全周を順次測定角度を変えて行われるが、その場
合はレバー１１を第１図の鎖線の位置に操作して
ばね７を圧縮し、探触子前面４ａを管内周面２ａ
より離したのち、フランジ１３の角度表示の刻印
１３ａを指標にして所望の角度だけフランジ１３
およびケース６を一体に回動させ、その位置でフ
ランジ１３が管継手端面１ａ上を移動しないよう
に押圧し、前述の操作により探触子４を移動させ
て探傷を繰り返す。このように探触子４の前面４
ａを管内周面２ａに摺動させることなく所望の被
測定位置にセツトすることが可能になり、摺動に
よる探触子前面４ａの損傷を防止することができ
る。探傷が一周完了すると、探触子４の管２の軸
線方向の位置を変えて探傷することになるが、こ
の場合にはフランジ１３のケース６に対する位置
を変えることにより、任意に探触子４の被検体に
対する位置が変えられ、前述の探傷を順次繰り返
して行うことになる。管２の接合部全周の探傷が
終了すると、レバー１１を前記鎖線位置に操作し
探触子前面４ａが管２および管継手１に接触しな
い位置に後退させたのち保持構造全体を一体で外
に引き出す。 The probe holding structure configured as described above is assembled, the lever 11 is placed in the position shown by the chain line in FIG. In this case, the probe 4 can be inserted into the front surface 4a of the probe 4 in a non-contact manner since it is spaced apart from the inner circumferential surface 2a of the tube. The position of the probe 4 is determined in advance from the pipe joint end surface 1a so that the probe 4 and the desired measured position are correctly opposed to each other.
The dimensions up to the flange 13 are determined by the locking position where the flange 13 is screwed onto the case 6.
It can be installed at a desired position simply by abutting it against the pipe joint end face 1a. When the lever 11 is released from the examiner's hand in this state, the probe holder 9 is pressed by the spring 7, and the front surface 4a of the probe 4, which is integrally attached to the probe holder 9, is moved around the inner circumference of the tube. Surface 2a
The lever 11 rotates slightly about the pin 12 and reaches the position shown by the solid line in FIG. The pressing force of the spring 7 can be adjusted arbitrarily by changing the position of the spring seat 8, and
Although the contact pressure between the tube 2 and the tube a is kept constant, it is also easy to adjust the spring constant by changing the spring constant depending on the type of object, such as the diameter of the tube 2 and the degree of machining of the inner peripheral surface 2a of the tube. Probe holder 9 and probe 4
When moving, the guide pin 9a slides along the guide portion 6b and also slides on the cradle 10 at the same time, so that the lever 11 can be moved smoothly with almost no gaps in each direction. By changing the position shown by the chain line in FIG. 1 to the free state shown by the solid line, it will always move correctly in the same direction and will be pressed with a constant pressing force. Flaw detection is carried out around the entire circumference of the joint of the tube 2, changing the measuring angle sequentially. In this case, the lever 11 is moved to the position indicated by the chain line in Fig. 1 to compress the spring 7, and the front surface 4a of the probe is Pipe inner peripheral surface 2a
After separating them, move the flange 13 by the desired angle using the angle display marking 13a on the flange 13 as an index.
Then, the case 6 is rotated together, and at that position, the flange 13 is pressed so that it does not move on the pipe joint end face 1a, and the probe 4 is moved by the above-described operation to repeat the flaw detection. In this way, the front surface 4 of the probe 4
It becomes possible to set the probe a at a desired position to be measured without sliding it on the inner circumferential surface 2a of the tube, and damage to the front surface 4a of the probe due to sliding can be prevented. When one cycle of flaw detection is completed, flaw detection is performed by changing the position of the probe 4 in the axial direction of the tube 2. In this case, by changing the position of the flange 13 with respect to the case 6, the position of the probe 4 can be adjusted arbitrarily. The position relative to the object is changed, and the above-described flaw detection is sequentially repeated. When the flaw detection of the entire circumference of the joint of the pipe 2 is completed, the lever 11 is moved to the chain line position and the front surface of the probe 4a is moved back to a position where it does not come into contact with the pipe 2 or the pipe fitting 1, and then the entire holding structure is removed as one piece. Pull it out.
なお、前記探触子ホルダ９を一定の押圧力で押
すのにばね７を使用し、そのばね７の押圧力を解
除するのにレバー１１を使用する実施例について
説明したが、これに変えて液圧もしくは空圧で作
用するシリンダを使用し、供給圧を任意に調整可
能にして一定の押圧力とし、シリンダの動きに連
動して探触子ホルダを移動させるようにしてもよ
い。この場合にはばね７およびレバー１１は不要
になり、検査者のレバー１１の操作が不要になる
効果がある。 Note that an embodiment has been described in which the spring 7 is used to press the probe holder 9 with a constant pressing force, and the lever 11 is used to release the pressing force of the spring 7. A hydraulic or pneumatic cylinder may be used, the supply pressure may be arbitrarily adjusted to provide a constant pressing force, and the probe holder may be moved in conjunction with the movement of the cylinder. In this case, the spring 7 and the lever 11 are no longer necessary, and there is an effect that the examiner does not need to operate the lever 11.
以上説明した如く本考案に係わる探触子の保持
構造は、探触子を一体に取付けた探触子ホルダ
を、管材の接合部の被測定位置に管内周面から一
定の押圧力で押圧するように設けたケースと、該
ケースに探触子を管材接合部の任意の測定位置に
移動させられる位置決め手段を設ける構成とした
から、管材のろう付された接合部の探傷を、所望
の測定位置に正しく探触子をセツトし、一定の押
付け力を保持して正確かつ容易に行うことができ
る実用上顕著な効果を有する。
As explained above, the probe holding structure according to the present invention presses the probe holder with the probe integrally attached to the measurement position of the joint of the tube from the inner peripheral surface of the tube with a constant pressing force. Since the case is equipped with a positioning means that allows the probe to be moved to an arbitrary measurement position on the pipe joint, flaw detection of the brazed joint of the pipe can be performed at the desired measurement position. This has a remarkable practical effect in that it is possible to set the probe in the correct position, maintain a constant pressing force, and perform it accurately and easily.
第１図は本考案に係わる探触子の保持構造の実
施例の側断面図、第２図は第１図の−断面
図、第３図は第１図の−断面図である。第４
図は従来の管材のろう付された接合部の探傷方法
の一例を説明する斜視図、第５図は第４図の接合
部の拡大断面図である。
FIG. 1 is a sectional side view of an embodiment of a probe holding structure according to the present invention, FIG. 2 is a sectional view taken from the side of FIG. 1, and FIG. 3 is a sectional view taken from the side of FIG. 1. Fourth
The figure is a perspective view illustrating an example of a conventional flaw detection method for a brazed joint of pipe materials, and FIG. 5 is an enlarged sectional view of the joint shown in FIG. 4.
Claims (1)
背面に前記探触子を管内周面に直角方向に移動
させるためのガイドを設けた探触子ホルダと、
円筒体の一端部に切欠き部を設け、該切欠き部
に前記探触子ホルダのガイドを案内する案内部
を形成するとともに前記探触子ホルダを背面か
ら押圧して探触子を前記管内周面に当接させる
ばねを設けたケースと、先端部を前記探触子ホ
ルダに係合するとともに中間部を前記ケースに
ピンを介して揺動可能に支承し、他端部を揺動
操作可能に前記ケース外に突出させ前記中間部
のピンの回りに揺動させたとき前記探触子ホル
ダを介して前記ばねを伸縮させるレバーと、前
記ケースの軸線方向に相対移動可能に、かつ任
意の相対移動位置にて前記ケースの軸線の回り
に該ケースと一体に回動可能な探触子の位置決
め手段とを備えたことを特徴とする探触子の保
持構造。 ２ 前記探触子の位置決め手段が、片面に角度目
盛を表示するとともに内周面にねじを形成した
ドーナツ状のフランジと、該フランジに形成さ
れたねじと螺合可能なねじを外周面に形成した
前記ケースと、該ケースと前記フランジとを任
意の螺合位置にて一体に係止可能な係止手段と
からなる請求項１記載の探触子の保持構造。[Scope of claim for utility model registration] 1. A probe for flaw detection on the inner peripheral surface of the pipe is attached to the front surface,
a probe holder provided with a guide on the back surface for moving the probe in a direction perpendicular to the inner circumferential surface of the tube;
A notch is provided at one end of the cylindrical body, and a guide part is formed in the notch to guide the guide of the probe holder, and the probe holder is pressed from the back side to move the probe into the tube. A case is provided with a spring that comes into contact with the circumferential surface, a tip part engages with the probe holder, an intermediate part is swingably supported in the case via a pin, and the other end part is swingably operated. a lever that is movable relative to the axial direction of the case and that is movable relative to the case in an axial direction; A probe holding structure comprising a probe positioning means that is rotatable integrally with the case around the axis of the case at a relative movement position. 2. The positioning means for the probe includes a donut-shaped flange displaying an angle scale on one side and having a thread formed on the inner circumferential surface, and a screw formed on the outer circumferential surface that can be screwed with the screw formed on the flange. 2. The probe holding structure according to claim 1, comprising: the case; and locking means capable of locking the case and the flange together at any screwed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16434586U JPH0544780Y2 (en) | 1986-10-28 | 1986-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16434586U JPH0544780Y2 (en) | 1986-10-28 | 1986-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6370079U JPS6370079U (en) | 1988-05-11 |
| JPH0544780Y2 true JPH0544780Y2 (en) | 1993-11-15 |
Family
ID=31093381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16434586U Expired - Lifetime JPH0544780Y2 (en) | 1986-10-28 | 1986-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544780Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100358086B1 (en) * | 1999-11-01 | 2002-10-25 | 한국수력원자력 주식회사 | Wedge Device of Focused Ultrasonic Transducer for Boiler Tube and Pipe |
| US8899113B2 (en) * | 2012-05-29 | 2014-12-02 | The Boeing Company | Apparatus and method for inspecting a tube |
| JP7316888B2 (en) * | 2019-09-19 | 2023-07-28 | 日立造船株式会社 | Ultrasonic inspection method and ultrasonic inspection apparatus |
-
1986
- 1986-10-28 JP JP16434586U patent/JPH0544780Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6370079U (en) | 1988-05-11 |
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