JPH04264257A - Piping flaw sensor - Google Patents
Piping flaw sensorInfo
- Publication number
- JPH04264257A JPH04264257A JP7736891A JP7736891A JPH04264257A JP H04264257 A JPH04264257 A JP H04264257A JP 7736891 A JP7736891 A JP 7736891A JP 7736891 A JP7736891 A JP 7736891A JP H04264257 A JPH04264257 A JP H04264257A
- Authority
- JP
- Japan
- Prior art keywords
- flaw detection
- piping
- elastic plates
- detection section
- coil
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 125
- 238000012360 testing method Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 36
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Pipeline Systems (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は配管内を走行させて管外
面の腐食減肉等の検出をする配管探傷装置の配管探傷セ
ンサに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piping flaw detection sensor for a piping flaw detection device that travels inside the pipe to detect corrosion and thinning on the outer surface of the pipe.
【０００２】0002
【従来の技術】実際、使用状況にある、液体、気体を流
通させるための管（活管）には、充分な安全維持管理が
不可欠である。そのために、所定期間ごとに管の状態を
検査し、その管の損傷状態をチェックして損傷した部分
を早期に且つ確実に発見するようにし、その部分の交換
を行なうという点検保守作業がなされている。2. Description of the Related Art In fact, sufficient safety maintenance and management is essential for pipes (live pipes) for distributing liquids and gases that are in use. To this end, inspection and maintenance work is carried out in which the condition of the pipes is inspected at regular intervals, the state of damage to the pipes is checked, damaged parts are discovered early and reliably, and the damaged parts are replaced. There is.
【０００３】管の損傷状態をチェックするような場合、
目視によって損傷状態を調査することは不確実であり、
実際上、不可能である。また、液体、気体等を遮断して
行うのは様々な不都合が伴うので、液体、気体を流通さ
せた状態（活管）において行うようにするのが望ましい
。
そのために、管内に検査用センサを活管挿入装置を介し
て挿入し、管外面の腐食減肉の程度を電磁気的な方法に
より検知し、管体の状態を診断する手段が採用されてい
る。そのような電磁気的な検出手段として、例えば、■
ケーブルの先端に設けられた送信コイルから受信コイル
までの電磁波の伝播時間の変化により検出する手段、■
ケーブルの先端に設けたコイルに交流電流を流し、電磁
誘導により管体に発生させた渦電流の変化から検出する
手段、等を列挙することができる。■は精密検査用とし
て用いられ、管の貫通孔、および腐食等による減肉の大
・中検知が可能である。探傷周波数は３５ＨＺである。
一方、■は、簡敏な検査用として用いられ、貫通孔の検
知が可能である。尚、探傷周波数は２００ｋＨＺとなっ
ている。[0003] When checking the damage state of a pipe,
Visually inspecting damage conditions is uncertain;
In practice, it is impossible. Furthermore, since there are various inconveniences associated with carrying out the process while cutting off liquids, gases, etc., it is desirable to carry out the process while the liquids, gases, etc. are being circulated (in a live pipe). For this purpose, a method is adopted in which an inspection sensor is inserted into the pipe via a live pipe insertion device, and the degree of corrosion thinning on the outer surface of the pipe is detected by an electromagnetic method to diagnose the condition of the pipe body. As such an electromagnetic detection means, for example, ■
A means of detection based on changes in the propagation time of electromagnetic waves from the transmitting coil installed at the end of the cable to the receiving coil, ■
Examples include means for detecting changes in eddy current generated in a tube by electromagnetic induction by flowing an alternating current through a coil provided at the tip of a cable. ■ is used for precision inspection, and is capable of detecting through holes in pipes and large and medium-sized thinning due to corrosion, etc. The flaw detection frequency is 35Hz. On the other hand, ■ is used for quick inspection and allows detection of through holes. Note that the flaw detection frequency is 200kHz.
【０００４】0004
【発明が解決しようとする課題】しかしながら、前述の
ように、■、■の検出手段は、それぞれ、特質を有して
いるが、完全に配管探傷がなされることは難しく、更な
る検査精度の向上、検査にかかる作業時間の短縮化が求
められている。本発明では、以上の点を考慮して、■、
■の検出手段を併用することにより、検査精度の向上、
検査にかかる作業時間の短縮化を可能とした配管探傷装
置の配管探傷センサを提供することを目的とする。[Problems to be Solved by the Invention] However, as mentioned above, although the detection means (1) and (3) each have their own characteristics, it is difficult to perform complete piping flaw detection, and further improvement of inspection accuracy is required. There is a need for improvement and shortening of the work time required for inspection. In the present invention, considering the above points,
■Improvement of inspection accuracy by using detection means
It is an object of the present invention to provide a piping flaw detection sensor for a piping flaw detection device that enables shortening of the working time required for inspection.
【０００５】[0005]
【課題を解決するための手段】前記した課題を解決する
ために、本発明は、ケーブルに、少なくとも異なる方式
の電磁気的検査手段たる配管探傷手段を組合せ構成する
ことを特徴とするものである。また、本発明は、ケーブ
ル先端部に、第１の配管探傷部および第２の配管探傷部
を、それぞれ、コイルスプリング管を介して接続構成し
、前記第１配管探傷部は、長手方向を検査すべき管の軸
方向に、円筒をなすように配設すると共に、両端部を保
持部材に取り付けて中央部を張り出す構成とした複数の
弾性板と、これら弾性板中央部内側に設けられた渦流式
探傷コイルと、前記弾性板がなす円筒の中心軸に沿って
設けられた送信用コイルとを具備し、前記第２配管探傷
部は、長手方向を管の軸方向に、円筒をなすように配設
すると共に、両端部を保持部材に取り付けて中央部を張
り出すように構成した複数の弾性板と、これら弾性板の
中央部内側に設けられた受信用コイルとを具備するもの
であることを特徴とするものである。また、本発明は、
ケーブル先端部に、第１の配管探傷部、第２の配管探傷
部および第３の配管探傷部を、それぞれ、コイルスプリ
ング管を介して接続構成し、前記第１配管探傷部は、長
手方向を検査すべき管の軸方向に、円筒をなすように配
設すると共に、両端部を保持部材に取り付けて中央部を
張り出す構成とした複数の弾性板と、これら弾性板中央
部内側に設けられた渦流式探傷コイルとを具備し、前記
第２配管探傷部は、長手方向を管の軸方向に、円筒をな
すように配設すると共に、両端部を保持部材に取り付け
て中央部を張り出すように構成した複数の弾性板と、こ
れら弾性板がなす円筒の中心軸に沿って設けられた送信
用コイルとを具備し、前記第３の配管探傷部は、長手方
向を管の軸方向に、円筒をなすように配設すると共に、
両端部を保持部材に取り付けて中央部を張り出すように
構成した複数の弾性板と、これら弾性板の中央部内側に
設けられた受信用コイルとを具備するものであることを
特徴とするものである。また、本発明は、渦流式探傷コ
イルを、互いに並列または直列に接続構成することを特
徴とするものである。また、本発明は、受信用コイルを
、互いに直列又は並列に接続構成することを特徴とする
ものである。さらに、本発明は、第１配管探傷部をケー
ブルに結合維持するための拘束保持手段を設けたことを
特徴とするものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention is characterized in that the cable is constructed in combination with at least different types of piping flaw detection means, which are electromagnetic testing means. Further, the present invention provides a structure in which a first piping flaw detection section and a second piping flaw detection section are respectively connected to the tip of the cable via a coil spring tube, and the first piping flaw detection section inspects the longitudinal direction. A plurality of elastic plates are arranged in the axial direction of the pipe to form a cylinder, and both ends are attached to holding members so that the center part extends, and a plurality of elastic plates are provided inside the center part of these elastic plates. The second pipe flaw detection section includes an eddy current flaw detection coil and a transmission coil provided along the central axis of the cylinder formed by the elastic plate, and the second pipe flaw detection section is configured to form a cylinder with the longitudinal direction in the axial direction of the pipe. It is equipped with a plurality of elastic plates which are arranged in the same direction and have both ends attached to a holding member so that the center part extends, and a receiving coil provided inside the center part of these elastic plates. It is characterized by this. Moreover, the present invention
A first piping flaw detection section, a second piping flaw detection section, and a third piping flaw detection section are connected to the tip of the cable via coil spring tubes, and the first piping flaw detection section extends in the longitudinal direction. A plurality of elastic plates are arranged to form a cylinder in the axial direction of the pipe to be inspected, and have both ends attached to holding members and the center part protrudes. and an eddy current flaw detection coil, and the second pipe flaw detection section is arranged in a cylindrical shape with the longitudinal direction in the axial direction of the pipe, and both ends are attached to holding members and the center part is extended. The third piping flaw detection section includes a plurality of elastic plates configured as shown in FIG. , are arranged to form a cylinder, and
A device characterized by comprising a plurality of elastic plates configured such that both ends are attached to a holding member and the center portion is extended, and a receiving coil provided inside the center portion of these elastic plates. It is. Further, the present invention is characterized in that the eddy current flaw detection coils are connected in parallel or in series with each other. Further, the present invention is characterized in that the receiving coils are connected in series or in parallel to each other. Furthermore, the present invention is characterized in that a restraint holding means is provided for maintaining the first piping flaw detection section connected to the cable.
【０００６】[0006]
【作用】一つの配管探傷手段の検査性能によっては、検
出できない貫通孔や減肉箇所でも、異なる検査性能の配
管探傷手段が併設されているので、より確実に検査が可
能である。しかも、複数の検査装置を交換セットする必
要はないので、検査作業時間は大幅に短縮される。検査
の際、調査すべき管の内径を考慮し、弾性板の中央部の
張り出した径を若干大きなものと設定しておけば、管壁
への接触性と通過性を損なうことなく、円滑且つ正確な
検知が可能である。前記弾性板は、円筒を形成し、円周
上に等間隔毎に存在するので、管壁面を満遍なく検査す
ることができ、管内に探傷手段が挿入されても、液体、
気体等の通過は可能であり、液体、気体等の流通した状
態にて検査が可能である。また、弾性板は、中央部の張
出し力に抗して、管壁における障害物により縮径的に変
形することができ、多少の障害物を乗り越えられるので
、通過性が損なわれることはない。その際、配管探傷部
に障害物がひっかかり、通常の引っ張り力が配管探傷部
に加わっても、拘束保持手段により、保持され、破損を
回避することができる。渦流式探傷コイル、さらに、送
信用コイルや受信用コイルも複数設けられているが、そ
れぞれ、直列接続したり、並列接続したりして、チャン
ネル数を減ずる構成としたので、ケーブル芯数が節約さ
れると共に配線も簡略化され、装置の小型化が可能とな
る。[Function] Even through holes and thinned areas that cannot be detected depending on the inspection performance of one pipe flaw detection means can be inspected more reliably because pipe flaw detection means with different inspection performance are provided together. Moreover, since there is no need to replace and set a plurality of inspection devices, inspection work time is significantly shortened. At the time of inspection, if you consider the inner diameter of the pipe to be inspected and set the protruding diameter of the central part of the elastic plate to be slightly larger, it will be possible to conduct the inspection smoothly and without impairing the ability to contact and pass through the pipe wall. Accurate detection is possible. Since the elastic plates form a cylinder and are arranged at equal intervals on the circumference, the tube wall surface can be inspected evenly, and even if the flaw detection means is inserted into the tube, the liquid,
Gas, etc. can pass through it, and inspection can be performed in a state where liquid, gas, etc. are flowing. Further, the elastic plate can be deformed in a diameter-reduced manner by obstacles on the tube wall against the tension force of the central portion, and can overcome some obstacles, so that the passability is not impaired. At this time, even if an obstacle gets caught in the piping flaw detection part and a normal tensile force is applied to the piping flaw detection part, it is held by the restraining and holding means and damage can be avoided. There are multiple eddy current flaw detection coils, as well as transmitting coils and receiving coils, but each is connected in series or in parallel to reduce the number of channels, which saves on the number of cable cores. This also simplifies the wiring, making it possible to downsize the device.
【０００７】[0007]
【実施例】次に、本発明にかかる配管探傷センサについ
て、一実施例を挙げ、添付の図面を参照しながら以下説
明する。図１において、参照符号１は、使用状況にある
管２の損傷状態を検知する配管探傷装置の配管探傷セン
サを示す。尚、この配管探傷センサ１は、渦流式および
リモートフィールド式の配管探傷手段が組合せ構成され
たものである。すなわち、配管探傷センサ１は、ケーブ
ル先端部３に、第１の配管探傷部４および第２の配管探
傷部５を、それぞれ、コイルスプリング管６を介して接
続構成したものである。前記第１配管探傷部４は、コイ
ルスプリング管６に中空状軸本体７を取り付け、板ばね
部材８を中空状軸本体７周囲外側に円周を形成するよう
に等間隔毎に配設すると共に、長手方向をコイルスプリ
ング管６の軸方向に配向させ、両端部を、中空状軸本体
７に挿通したスライドリング９とスライドリングキャッ
プ１０で挟持して、板ばね部材８中央部を張り出させる
構成としたものである。これら板ばね部材８中央部内側
には渦流式探傷コイル１１が装着され、前記中空状軸本
体７に、検査すべき管２と同軸方向に配向された送信用
コイル１２を組つけ構成したものである。前記板ばね部
材８は、円周上に１２個配設され（図２参照）、渦流式
探傷コイル１１は、板ばね部材８に取り付けられた支持
枠１３に嵌装される。また、前記渦流式探傷コイル１１
は、例えば、互いに並列接続して一つの並列回路から構
成され（図４参照）、コイルスプリング管６、ケーブル
３内を介して探傷器（図示せず）に接続される。尚、前
記渦流式探傷コイル１１は、互いに直列接続することも
できる。前記第２配管探傷部５は、第１配管探傷部４同
様、両端部を、中空状軸本体１４に挿通したスライドリ
ング９とスライドリングキャップ１０で挟持して、中央
部を張り出すように構成された板ばね部材１５を具備し
、これら板ばね部材１５の中央部内側に、受信用コイル
１６をそれぞれ、装着したものである。前記板ばね部材
１５は、円周上に１０個配設される（図３参照）。受信
用コイル１６は、例えば、３個並列接続した２つの並列
回路、４個並列接続した並列回路に接続構成され（図５
参照）、それぞれ、コイルスプリング管６、ケーブル３
内を介して探傷器（図示せず）に接続される。尚、前記
受信用コイル１６はそれぞれ直列接続することもできる
。また、以上のような構成の配管探傷センサ１において
、第１配管探傷部４は、第１配管探傷部４における中空
状軸本体７の先端部からコイルスプリング管６を介して
第２配管探傷部５の中空状軸本体１４を挿通し、コイル
スプリング管６、ケーブルジョイント部（図示せず）に
至るテンションワイヤ１７によって係止され（図６参照
）、板ばね部材８、１５の復元しようとする力を抑えて
板ばね部材８、１５を中央部が張出し状態に維持し、ま
た、第１配管探傷部４または第２配管探傷部５が管２内
において障害物にひっかかり、強く引き戻そうとしても
、脱落破損しないように接続補強を図っている。[Embodiment] Next, an embodiment of the piping flaw detection sensor according to the present invention will be described below with reference to the attached drawings. In FIG. 1, reference numeral 1 indicates a pipe flaw detection sensor of a pipe flaw detection apparatus that detects a damaged state of a pipe 2 under use. The piping flaw detection sensor 1 is a combination of eddy current type and remote field type piping flaw detection means. That is, the pipe flaw detection sensor 1 has a first pipe flaw detection section 4 and a second pipe flaw detection section 5 connected to a cable tip 3 via a coil spring tube 6, respectively. The first piping flaw detection section 4 has a hollow shaft main body 7 attached to a coil spring tube 6, and plate spring members 8 arranged at equal intervals so as to form a circumference on the outer side of the hollow shaft main body 7. , the longitudinal direction is oriented in the axial direction of the coil spring tube 6, and both ends are sandwiched between a slide ring 9 inserted through the hollow shaft body 7 and a slide ring cap 10, so that the center portion of the leaf spring member 8 is extended. It is structured as follows. An eddy current flaw detection coil 11 is installed inside the central part of these leaf spring members 8, and a transmitting coil 12 oriented coaxially with the tube 2 to be inspected is assembled to the hollow shaft body 7. be. Twelve leaf spring members 8 are arranged on the circumference (see FIG. 2), and the eddy current flaw detection coil 11 is fitted into a support frame 13 attached to the leaf spring member 8. In addition, the eddy current flaw detection coil 11
For example, they are connected in parallel to each other to form one parallel circuit (see FIG. 4), and are connected to a flaw detector (not shown) via a coil spring tube 6 and a cable 3. Note that the eddy current flaw detection coils 11 can also be connected in series. Like the first pipe flaw detection part 4, the second pipe flaw detection part 5 is configured such that both ends thereof are sandwiched between a slide ring 9 inserted through a hollow shaft body 14 and a slide ring cap 10, and the central part is jutted out. The receiving coil 16 is equipped with a receiving coil 16 inside the central portion of each of the plate spring members 15. Ten leaf spring members 15 are arranged on the circumference (see FIG. 3). The receiving coil 16 is connected to, for example, two parallel circuits in which three coils are connected in parallel, or a parallel circuit in which four coils are connected in parallel (FIG. 5).
), respectively, coil spring tube 6 and cable 3
It is connected to a flaw detector (not shown) through the inside. Incidentally, the receiving coils 16 can also be connected in series. In the piping flaw detection sensor 1 having the above configuration, the first piping flaw detection section 4 connects the second piping flaw detection section from the tip of the hollow shaft body 7 in the first piping flaw detection section 4 via the coil spring tube 6. 5 is inserted through the hollow shaft body 14 and is locked by a tension wire 17 extending to the coil spring tube 6 and the cable joint (not shown) (see FIG. 6), and the leaf spring members 8, 15 attempt to restore their original state. The force is suppressed to maintain the leaf spring members 8 and 15 in a state where the central portions are extended, and even if the first pipe flaw detection section 4 or the second pipe flaw detection section 5 gets caught on an obstacle in the pipe 2 and tries to pull back forcefully. The connection is reinforced to prevent it from falling off and being damaged.
【０００８】かかる配管探傷センサ１によれば、一つの
配管探傷手段の検査性能によっては、管２における検出
できない貫通孔や減肉箇所でも、渦流式探傷手段の渦流
式探傷コイル１１並びにリモートフィールド式探傷手段
の送信用コイル１２および受信用コイル１６が設けられ
ているので、検査対照が広範囲なものとなり、より確実
に検査が可能である。しかも、従来のように、渦流式検
査装置や、リモートフィールド式検査装置を交換してセ
ットする必要はないので、検査作業時間は大幅に短縮さ
れる。検査の際、調査すべき管２の内径を考慮し、板ば
ね部材８、１５の中央部の張り出した径を若干大きなも
のと設定しておけば、管２壁への接触性と通過性を損な
うことなく、円滑且つ正確な検知が可能である。前記板
ばね部材８、１５は、円筒を形成し、円周上に等間隔毎
に存在するので、管２壁面を満遍なく検査することがで
き、管２内に第１配管探傷部４や第２配管探傷部５が挿
入されても、液体、気体等の通過は可能であり、液体、
気体等の流通した状態にて検査が可能である。また、板
ばね部材８、１５は、中央部の張出し力に抗して、管２
壁における障害物により縮径的に変形することができ、
多少の障害物を乗り越えられるので、通過性が損なわれ
ることはない。その際、第１配管探傷部４または第２配
管探傷部５に障害物がひっかかり、通常以上の引っ張り
力が第１配管探傷部４および第２配管探傷部５に加わっ
ても、テンションワイヤ１７により、保持され、破損を
回避することができる。渦流式探傷コイル１１、さらに
、送信用コイル１２や受信用コイル１６は複数設けられ
ているが、互いに並列にまたは直列に接続することで、
チャンネル数を減ずる構成としたので、ケーブル芯数が
節約されると共に配線も簡略化され、装置の小型化が可
能となる。以上の配管探傷センサ１において、板ばね部
材８、１５に非磁性体を採用すると、検出に際して、磁
気的な妨害はなく、正確な検出が可能である。また、弾
性係数が大きいものであれば、板ばね部材８、１５には
、樹脂製のばね部材を適用しても差し支えない。
尚、第１配管探傷部４において、渦流式探傷手段の渦流
式探傷コイル１１並びにリモートフィールド式探傷手段
の送信用コイル１２が装着されているが、探傷周波数が
異なっているので、相互干渉はなく、検査に支障はない
。さらに、板ばね部材８、１５の管２体との接触表面に
、滑動部材、例えば、フッ素樹脂等によって被覆すると
、板ばね部材８、１５の耐摩耗性は向上し、しかも、潤
滑性が向上するので、通過性が格段に改善される。According to the pipe flaw detection sensor 1, depending on the inspection performance of one pipe flaw detection means, even through holes or thinned parts of the pipe 2 that cannot be detected can be detected by the eddy current flaw detection coil 11 of the eddy current flaw detection means and the remote field type flaw detection means. Since the transmitting coil 12 and the receiving coil 16 of the flaw detection means are provided, a wide range of objects can be inspected, and more reliable inspection is possible. Furthermore, unlike in the past, there is no need to replace and set up the eddy current type inspection device or the remote field type inspection device, so the inspection work time is significantly shortened. At the time of inspection, considering the inner diameter of the pipe 2 to be inspected, if the diameter of the protruding central part of the leaf spring members 8 and 15 is set to be slightly larger, contact and passage to the wall of the pipe 2 can be improved. Smooth and accurate detection is possible without damage. The leaf spring members 8 and 15 form a cylinder and are arranged at equal intervals on the circumference, so that the wall surface of the pipe 2 can be evenly inspected, and the first pipe flaw detection section 4 and the second Even if the piping flaw detection section 5 is inserted, liquids, gases, etc. can pass through.
Inspection can be performed in a state where gas, etc. is flowing. In addition, the leaf spring members 8 and 15 resist the tension force in the central portion of the tube 2.
Can be deformed diametrically due to obstacles in the wall,
Since it is possible to overcome some obstacles, the passability is not impaired. At that time, even if an obstacle gets caught in the first piping flaw detection part 4 or the second piping flaw detection part 5 and a tensile force higher than normal is applied to the first piping flaw detection part 4 or the second piping flaw detection part 5, the tension wire 17 , can be preserved and avoid damage. A plurality of eddy current flaw detection coils 11, as well as transmitting coils 12 and receiving coils 16 are provided, but by connecting them in parallel or in series,
Since the configuration reduces the number of channels, the number of cable cores can be saved, wiring can be simplified, and the device can be made smaller. In the above piping flaw detection sensor 1, if a non-magnetic material is used for the leaf spring members 8 and 15, there will be no magnetic interference during detection and accurate detection will be possible. Further, as long as the elastic modulus is large, resin spring members may be used as the leaf spring members 8 and 15. In the first piping flaw detection section 4, an eddy current flaw detection coil 11 of the eddy current flaw detection means and a transmitting coil 12 of the remote field flaw detection means are installed, but since the flaw detection frequencies are different, there is no mutual interference. , there is no problem with the inspection. Furthermore, if the contact surfaces of the leaf spring members 8 and 15 with the two tubes are coated with a sliding member such as fluororesin, the wear resistance of the leaf spring members 8 and 15 will be improved, and the lubricity will be improved. Therefore, the passability is greatly improved.
【０００９】以上、一実施例を挙げて説明したが、別の
実施例として、図７に示すような構成の配管探傷センサ
２０を挙げることができる。尚、かかる配管探傷センサ
２０において、前述の実施例における前記配管探傷セン
サ１を構成する要素と、実質的に同一の要素には、同符
号を付してその説明を省略するものとする。本実施例に
かかる配管探傷センサ２０では、渦流式探傷手段の渦流
式探傷コイル１１並びにリモートフィールド式探傷手段
の送信用コイル１２および受信用コイル１６をそれぞれ
、板ばね部材８、１５、２１の中央部を張り出し構成し
た第１配管探傷部４、第２配管探傷部５および第３配管
探傷部２２に装着構成したものである。かかる配管探傷
センサ２０によれば、前述の配管探傷センサ１同様、管
２における減肉箇所や、貫通孔の確実な検出が可能であ
る。しかも、複数の異なった検査方式の検査装置の中か
ら適宜なものを選択して、交換セットする必要はないの
で、検査作業時間を大幅に短縮することができる。さら
に、渦流式探傷コイル１１、送信用コイル１２および受
信用コイル１６がそれぞれ、分離して装着される構成な
ので、相互干渉はなく検知性能は、一層安定したものと
なる。Although one embodiment has been described above, a pipe flaw detection sensor 20 having a configuration as shown in FIG. 7 can be cited as another embodiment. In this piping flaw detection sensor 20, elements that are substantially the same as those constituting the piping flaw detection sensor 1 in the above-described embodiment are given the same reference numerals, and their explanations will be omitted. In the piping flaw detection sensor 20 according to this embodiment, the eddy current flaw detection coil 11 of the eddy current flaw detection means and the transmitting coil 12 and receiving coil 16 of the remote field flaw detection means are placed at the center of the leaf spring members 8, 15, 21, respectively. It is configured to be attached to the first piping flaw detection section 4, the second piping flaw detection section 5, and the third piping flaw detection section 22, each of which has an overhanging structure. According to the piping flaw detection sensor 20, similarly to the piping flaw detection sensor 1 described above, it is possible to reliably detect thinning locations and through holes in the pipe 2. Furthermore, since there is no need to select and replace an appropriate inspection device from among a plurality of different inspection systems, inspection work time can be significantly reduced. Furthermore, since the eddy current flaw detection coil 11, the transmitting coil 12, and the receiving coil 16 are each installed separately, there is no mutual interference, and the detection performance becomes more stable.
【００１０】0010
【発明の効果】以上の通り、本発明によれば、一つの配
管探傷手段の検査性能によっては、検出できない貫通孔
や減肉箇所でも、異なる検査性能の配管探傷手段が併設
されているので、より確実に検査が可能である。しかも
、従来のように、異なった検査方式の検査装置の間で選
択し、交換セットする必要はないので、検査作業時間を
大幅に短縮することができる。また、弾性板は、等間隔
毎に配設されているので、管壁面を満遍なく検査するこ
とができ、また、管内に探傷手段が挿入されても、液体
、気体等の通過は可能であり、液体、気体等の流通した
状態にて検査が可能である。このように、本発明にかか
る配管探傷センサを適用することにより、結果として、
安全維持管理の合理化、費用の抑制化、保安の向上に大
きな効果を奏する。[Effects of the Invention] As described above, according to the present invention, piping flaw detection means with different inspection performance are installed together, even in the case of through-holes and thinning areas that cannot be detected depending on the inspection performance of one piping flaw detection means. More reliable inspection is possible. Moreover, unlike the conventional method, there is no need to select between inspection apparatuses of different inspection methods and replace them, so that the inspection work time can be significantly shortened. In addition, since the elastic plates are arranged at equal intervals, the tube wall surface can be inspected evenly, and even if the flaw detection means is inserted into the tube, liquids, gases, etc. can pass through. Inspection can be performed in a state where liquid, gas, etc. are flowing. As described above, by applying the piping flaw detection sensor according to the present invention, as a result,
It has great effects on rationalizing safety maintenance management, reducing costs, and improving security.
【００１１】[0011]
【図１】本発明にかかる配管探傷センサの側面説明図で
ある。FIG. 1 is an explanatory side view of a piping flaw detection sensor according to the present invention.
【図２】第１配管探傷部の断面説明図である。FIG. 2 is a cross-sectional explanatory diagram of a first piping flaw detection section.
【図３】第２配管探傷部の断面説明図である。FIG. 3 is an explanatory cross-sectional view of a second piping flaw detection section.
【図４】渦流式探傷コイルの結線回路図である。FIG. 4 is a wiring circuit diagram of an eddy current flaw detection coil.
【図５】送信コイルの結線回路図である。FIG. 5 is a wiring circuit diagram of a transmitting coil.
【図６】第１配管探傷部の接続保持機構を説明する図で
ある。FIG. 6 is a diagram illustrating a connection holding mechanism of the first piping flaw detection section.
【図７】本発明にかかる配管探傷センサの別の実施例を
示す側面説明図である。FIG. 7 is an explanatory side view showing another embodiment of the piping flaw detection sensor according to the present invention.
Claims (6)
式の電磁気的検査手段たる配管探傷手段を組合せ構成す
ることを特徴とする配管探傷センサ。1. A piping flaw detection sensor comprising a cable in combination with at least different types of piping flaw detection means, which are electromagnetic testing means.
傷部および第２の配管探傷部を、それぞれ、コイルスプ
リング管を介して接続構成し、前記第１配管探傷部は、
長手方向を検査すべき管の軸方向に、円筒をなすように
配設すると共に、両端部を保持部材に取り付けて中央部
を張り出す構成とした複数の弾性板と、これら弾性板中
央部内側に設けられた渦流式探傷コイルと、前記弾性板
がなす円筒の中心軸に沿って設けられた送信用コイルと
を具備し、前記第２配管探傷部は、長手方向を管の軸方
向に、円筒をなすように配設すると共に、両端部を保持
部材に取り付けて中央部を張り出すように構成した複数
の弾性板と、これら弾性板の中央部内側に設けられた受
信用コイルとを具備するものであることを特徴とする配
管探傷センサ。2. A first piping flaw detection section and a second piping flaw detection section are each connected to the tip of the cable via a coil spring tube, and the first piping flaw detection section comprises:
A plurality of elastic plates are arranged in a cylindrical manner in the longitudinal direction of the tube to be inspected, and have both ends attached to a holding member so that the center part extends, and a plurality of elastic plates are arranged inside the center part of the elastic plates. The second pipe flaw detection section includes an eddy current flaw detection coil provided at It is equipped with a plurality of elastic plates arranged in a cylindrical shape, both ends of which are attached to a holding member, and a center part of which protrudes, and a receiving coil provided inside the center part of these elastic plates. A piping flaw detection sensor characterized by:
傷部、第２の配管探傷部および第３の配管探傷部を、そ
れぞれ、コイルスプリング管を介して接続構成し、前記
第１配管探傷部は、長手方向を検査すべき管の軸方向に
、円筒をなすように配設すると共に、両端部を保持部材
に取り付けて中央部を張り出す構成とした複数の弾性板
と、これら弾性板中央部内側に設けられた渦流式探傷コ
イルとを具備し、前記第２配管探傷部は、長手方向を管
の軸方向に、円筒をなすように配設すると共に、両端部
を保持部材に取り付けて中央部を張り出すように構成し
た複数の弾性板と、これら弾性板がなす円筒の中心軸に
沿って設けられた送信用コイルとを具備し、前記第３の
配管探傷部は、長手方向を管の軸方向に、円筒をなすよ
うに配設すると共に、両端部を保持部材に取り付けて中
央部を張り出すように構成した複数の弾性板と、これら
弾性板の中央部内側に設けられた受信用コイルとを具備
するものであることを特徴とする配管探傷センサ。3. A first piping flaw detection section, a second piping flaw detection section, and a third piping flaw detection section are each connected to the tip of the cable via a coil spring tube, and the first piping flaw detection section consists of a plurality of elastic plates arranged in a cylindrical shape in the longitudinal direction of the tube to be inspected, with both ends attached to holding members and the central part protruding; and an eddy current flaw detection coil provided inside the section, and the second pipe flaw detection section is arranged in a cylindrical shape with the longitudinal direction in the axial direction of the pipe, and both ends are attached to the holding member. The third piping flaw detection section includes a plurality of elastic plates configured to project out from the center, and a transmitting coil provided along the central axis of a cylinder formed by these elastic plates. A plurality of elastic plates are arranged in the axial direction of the tube to form a cylinder, and are configured such that both ends are attached to holding members and the center part extends, and a plurality of elastic plates are provided inside the center part of these elastic plates. A piping flaw detection sensor characterized by comprising a receiving coil.
傷コイルを、互いに並列又は直列に接続構成することを
特徴とする配管探傷センサ。4. A piping flaw detection sensor, characterized in that the eddy current flaw detection coils according to claim 2 or 3 are connected to each other in parallel or in series.
イルを、互いに直列又は並列に接続構成することを特徴
とする配管探傷センサ。5. A piping flaw detection sensor, characterized in that the receiving coils according to claim 2 or 3 are connected to each other in series or in parallel.
センサにおいて、第１配管探傷部をケーブルに結合維持
するための拘束保持手段を設けたことを特徴とする配管
探傷センサ。6. The piping flaw detection sensor according to claim 2, further comprising a restraint holding means for maintaining the first piping flaw detection section connected to the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3077368A JP3058288B2 (en) | 1991-02-19 | 1991-02-19 | Piping flaw detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3077368A JP3058288B2 (en) | 1991-02-19 | 1991-02-19 | Piping flaw detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04264257A true JPH04264257A (en) | 1992-09-21 |
| JP3058288B2 JP3058288B2 (en) | 2000-07-04 |
Family
ID=13631961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3077368A Expired - Fee Related JP3058288B2 (en) | 1991-02-19 | 1991-02-19 | Piping flaw detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3058288B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010127665A (en) * | 2008-11-26 | 2010-06-10 | Japan Atomic Energy Agency | Eddy current flaw detection system |
| CN107991383A (en) * | 2017-11-30 | 2018-05-04 | 北方工业大学 | Hollow shaft inner wall detection self-adaptive tool and detection method |
| CN114542988A (en) * | 2022-02-24 | 2022-05-27 | 成都秦川物联网科技股份有限公司 | Natural gas pipe network leakage remote alarm system based on Internet of things |
-
1991
- 1991-02-19 JP JP3077368A patent/JP3058288B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010127665A (en) * | 2008-11-26 | 2010-06-10 | Japan Atomic Energy Agency | Eddy current flaw detection system |
| CN107991383A (en) * | 2017-11-30 | 2018-05-04 | 北方工业大学 | Hollow shaft inner wall detection self-adaptive tool and detection method |
| CN114542988A (en) * | 2022-02-24 | 2022-05-27 | 成都秦川物联网科技股份有限公司 | Natural gas pipe network leakage remote alarm system based on Internet of things |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3058288B2 (en) | 2000-07-04 |
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