JPS6038664B2 - Flaw detector drive device - Google Patents
Flaw detector drive deviceInfo
- Publication number
- JPS6038664B2 JPS6038664B2 JP56153582A JP15358281A JPS6038664B2 JP S6038664 B2 JPS6038664 B2 JP S6038664B2 JP 56153582 A JP56153582 A JP 56153582A JP 15358281 A JP15358281 A JP 15358281A JP S6038664 B2 JPS6038664 B2 JP S6038664B2
- Authority
- JP
- Japan
- Prior art keywords
- flaw detector
- tube
- signal cable
- reel
- signal
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
【発明の詳細な説明】
本発明は、ボィラ伝熱管などの、内側からの検査装置に
係り、特に多数の曲管部を有する管の探傷子の駆動装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for inspecting a boiler heat exchanger tube or the like from the inside, and more particularly to a driving apparatus for a flaw detector for a tube having a large number of curved tube sections.
従来の探傷子駆動装置としては、直菅またはＵ字管とい
った比較的単純な形状を有する管について、信号ケーブ
ルを用いた押込みあるいは、空圧により挿入し、機械的
に信号ケーブルを巻き戻すことにより、管内面からの超
音波探傷を行なっている。Conventional flaw detector drive devices have been used to insert relatively simple tubes such as straight tubes or U-shaped tubes using signal cables, or by inserting air pressure and mechanically rewinding the signal cables. , we conduct ultrasonic flaw detection from the inside of the tube.
しかし、これらの方法は、管が直管に近い比較的単純な
形状の場合のみ有効であり、多数の曲管部を有する複雑
な形状の管に対しては、その全長に至るまで深傷子を挿
入することができず、管の全長を検査できないという欠
点がある。本発明の目的は、管の全長にわたり内挿型深
傷子を所定の速度で円滑に挿入、引抜きができる深傷子
駆動装置を提供することにある。本発明の特徴は、管内
の探傷子を流体を用いて圧送する際、探傷子の駆動流体
の圧力、流量を制御するとともに、探傷子からの信号を
取出す信号ケーブルの張力を測定し、この張力の測定値
に基づいて信号ケーブル巻取り用リールおよび信号ケー
ブルに接触する位置検出用リールのトルクおよび回転速
度を調節することにある。However, these methods are effective only when the pipe has a relatively simple shape that is close to a straight pipe, and when the pipe has a complex shape with many curved pipes, it can cause deep damage along its entire length. The disadvantage is that the entire length of the tube cannot be inspected. SUMMARY OF THE INVENTION An object of the present invention is to provide a deep wound element driving device capable of smoothly inserting and withdrawing an internally inserted deep wound element at a predetermined speed over the entire length of a tube. The present invention is characterized by controlling the pressure and flow rate of the driving fluid for the flaw detector when a fluid is used to pump the flaw detector in the tube, and measuring the tension of the signal cable that extracts the signal from the flaw detector. The object of the present invention is to adjust the torque and rotational speed of the signal cable winding reel and the position detection reel that contacts the signal cable based on the measured values.
本発明の−実施例を第１図に基づいて説明する。An embodiment of the present invention will be described based on FIG.
１は、多数の曲管部を有する管である。1 is a pipe having a large number of curved pipe parts.
超音波探傷子（図示せず）の管１内への挿入は、バルブ
６Ａ，６Ｂおよび６Ｆを開いてバルブ６Ｃ，６Ｄおよび
６Ｅを閉じ、ポンプ７Ａを駆動することによって行なわ
れる。この操作により、タンク８内の駆動水は配管１８
を適って管１の一端より管１内に供給され、超音波探傷
子は、管１内に挿入される。超音波探傷子によって管１
内面からの超音波探傷が実施される。超音波探傷子の移
動に伴って管１の他騰から排出される水は、バイパス管
１３Ｂを通ってタンク８内に導入される。管１の超音波
探傷が完了して超音波探傷子を管１より引抜く場合には
、バルブ６Ａ，６８および６Ｆを閉じてバルブ６Ｃ，６
Ｄおよび６８を開き、ポンプ７Ｂを駆動することによっ
て行なわれる。Insertion of an ultrasonic flaw detector (not shown) into tube 1 is performed by opening valves 6A, 6B, and 6F, closing valves 6C, 6D, and 6E, and driving pump 7A. With this operation, the driving water in the tank 8 is transferred to the pipe 18.
is then supplied into the tube 1 from one end of the tube 1, and the ultrasonic flaw detector is inserted into the tube 1. Tube 1 by ultrasonic flaw detector
Ultrasonic flaw detection is performed from the inside. Water discharged from the tube 1 as the ultrasonic flaw detector moves is introduced into the tank 8 through the bypass tube 13B. When the ultrasonic flaw detection of tube 1 is completed and the ultrasonic flaw detector is to be pulled out from tube 1, valves 6A, 68 and 6F are closed and valves 6C and 6 are removed.
This is done by opening D and 68 and driving pump 7B.
タンク８内の水が逆方向から管１内に供給され、超音波
深傷子が管１内から引抜かれる。超音波深傷子は、信号
ケーブル１２の先端に取付けられている。超音波深傷子
の信号は、信号ケーブル１２によって取出される。信号
ケーブル１２は、位置検出用リール３に巻付けられ、最
終的には巻取り用リール４に巻取られる。超音波探傷子
の挿入および引抜速度の制御は、制御装置１１の出力信
号に基づいて、ポンプ７Ａおよび７Ｂの回転数調節によ
り駆動水の流量および圧力を制御するとともに、位置検
出用リレー３のトルクおよび速度、並びに信号ケーブル
１２の巻取り用リール４のトルク及び速度を相互に関連
づけて制御する。Water in the tank 8 is supplied into the tube 1 from the opposite direction, and the ultrasonic deep wound element is extracted from the tube 1. The ultrasonic deep wound element is attached to the tip of the signal cable 12. The ultrasonic deep wound signal is extracted by a signal cable 12. The signal cable 12 is wound around the position detection reel 3 and finally wound onto the take-up reel 4. The insertion and withdrawal speed of the ultrasonic flaw detector is controlled by controlling the flow rate and pressure of the driving water by adjusting the rotation speed of the pumps 7A and 7B based on the output signal of the control device 11, and by controlling the torque of the position detection relay 3. and speed, and the torque and speed of the take-up reel 4 of the signal cable 12 are controlled in relation to each other.
すなわち、超音波深傷子および信号ケーブル１２は、駆
動水の圧送力により駆動力を得、巻取りリール４より位
置検出用リール３を介して管１内へ導かれる。この時、
信号ケーブル１２の張力が、張力検出器２にて測定され
る。張力検出器２の出力信号は、変換器９Ａを介して制
御装置１１に入力される。１０Ｃは、張力検出器２の駆
動源である。That is, the ultrasonic deep wound element and the signal cable 12 obtain driving force by the pumping force of the driving water, and are guided into the tube 1 from the take-up reel 4 via the position detection reel 3. At this time,
The tension of the signal cable 12 is measured by the tension detector 2. The output signal of the tension detector 2 is input to the control device 11 via the converter 9A. 10C is a driving source for the tension detector 2.
制御装置１１は、入力した張力信号に基づいて駆動源１
０Ａを制御し、位置検出用リール３のトルクおよび回転
速度を適切な値に調節する。また、制御装橿１１は、入
力した張力信号に基づいて駆動源１０Ｂを制御し、巻取
り用リール４のトルクおよび回転速度を適切な値に調節
できる。これによって、超音波深傷子の移動時に信号ケ
ーブルが損傷を受けることがない。位置検出用リール３
の検出信号は、変換器９Ｂを介して制御装置１１に入力
され、これに基づいて超音波深傷子の管１内における位
置を検出することができる。張力信号に基づいて位置検
出用リール３のトルクおよび回転速度を調節できるので
、超音波探傷子の位置を精度良く測定できる。超音波探
傷子の管１内における移動を円滑に行なうため、揺動操
作が行なわれる。この操作は、前述した超音波深傷子の
挿入および引抜き操作を交互に繰返すものである。すな
わち、バルブ６Ａ，６８および６Ｆとバルブ６Ｃ，６Ｄ
および６Ｅの開閉が交互に行ない、ポンプ７Ａおよび７
８の駆動も交互に行なうことによって実施され、超音波
探傷子の速度の変化およ、び移動方向の変化が行なわれ
る。曲警部の多い管１にあっては、特に揺動操作を行な
うことにより超音波探傷子の移動が円滑になる。このよ
うな揺動操作時においても、張力検出器２の信号に基づ
いて位置検出用リール３および巻取り用リール４のトル
クおよび回転速度を調節できるので、衝撃力の加わる信
号ケーブル１２の損傷を防止できるとともに、信号ケー
ブル１２の移動が円滑になることにより超音波探傷子の
移動も滑らかになる。また、揺動操作時においても、超
音波探傷子の管１内の位置を、精度良く検出できる。駆
動流体としては、水等の流体のほかに空気等のガスを用
いてもよい。The control device 11 controls the drive source 1 based on the input tension signal.
0A and adjust the torque and rotational speed of the position detection reel 3 to appropriate values. Further, the control device 11 controls the drive source 10B based on the input tension signal, and can adjust the torque and rotational speed of the take-up reel 4 to appropriate values. This prevents the signal cable from being damaged during the movement of the ultrasonic deep wound element. Position detection reel 3
The detection signal is input to the control device 11 via the transducer 9B, and based on this, the position of the ultrasonic wound element in the tube 1 can be detected. Since the torque and rotational speed of the position detection reel 3 can be adjusted based on the tension signal, the position of the ultrasonic flaw detector can be measured with high accuracy. In order to smoothly move the ultrasonic flaw detector within the tube 1, a swinging operation is performed. This operation consists of alternately repeating the above-described insertion and withdrawal operations of the ultrasonic wound element. That is, valves 6A, 68, and 6F and valves 6C, 6D.
and 6E are alternately opened and closed, and pumps 7A and 7
8 is also alternately driven to change the speed of the ultrasonic flaw detector and the direction of movement of the ultrasonic flaw detector. In the case of a pipe 1 with many bends, the movement of the ultrasonic flaw detector becomes smooth especially by performing a swinging operation. Even during such swinging operations, the torque and rotational speed of the position detection reel 3 and take-up reel 4 can be adjusted based on the signal from the tension detector 2, thereby preventing damage to the signal cable 12 that is subjected to impact force. This can be prevented, and since the signal cable 12 can move smoothly, the ultrasonic flaw detector can also move smoothly. Further, even during the swinging operation, the position of the ultrasonic flaw detector inside the tube 1 can be detected with high accuracy. As the driving fluid, a gas such as air may be used in addition to a fluid such as water.
第２図は、本発明の他の実施例を示すもので、第１図と
異なるのは、駆動流体として空気を用いている点である
。FIG. 2 shows another embodiment of the present invention, which differs from FIG. 1 in that air is used as the driving fluid.
６Ｇ〜６Ｌはバルブ、１４はコンブレツサ、１５は真空
ポンプおよび１６は空気タンクである。6G to 6L are valves, 14 is a compressor, 15 is a vacuum pump, and 16 is an air tank.
本発明によれば、管内より探傷する探傷子をその全長に
わたって円滑に速度制御できるとともに、信号ケーブル
の破損も防止することができる。According to the present invention, it is possible to smoothly control the speed of the flaw detector that detects flaws from inside the pipe over its entire length, and it is also possible to prevent damage to the signal cable.
第１図は本発明の好適な一実施例である探傷子駆動装置
の系統図、第２図は本発明の他の実施例の系統図である
。
１・・・・・・管、２・・・・・・張力検出機構、３・
・・・・・位置検出用リール、４・・・・・・巻取り用
リール、７Ａ，７Ｂ・・・…ポンプ、８・・・・・・タ
ンク、１１・・・・・・制御装置、１２・・・・・・信
号ケーブル。
鯖ー図
第２図FIG. 1 is a system diagram of a flaw detector driving device according to a preferred embodiment of the present invention, and FIG. 2 is a system diagram of another embodiment of the present invention. 1...Pipe, 2...Tension detection mechanism, 3.
...position detection reel, 4 ... winding reel, 7A, 7B ... pump, 8 ... tank, 11 ... control device, 12...Signal cable. Mackerel diagram Figure 2
Claims (1)
る探傷子駆動装置において、前記流体の圧力および流量
を制御する手段と、前記探傷子からの信号を取出す信号
ケーブルの張力を測定する手段と、この張力の測定値に
基づいて、信号ケーブル巻取り用リールおよび前記信号
ケーブルに接触する位置検出用リールのトルクおよび回
転速度を調節する制御手段を有することを特徴とする探
傷子駆動装置。1. In a flaw detector drive device that uses fluid to drive a flaw detector inserted into a pipe, means for controlling the pressure and flow rate of the fluid, and means for measuring the tension of a signal cable that takes out a signal from the flaw detector. and a control means for adjusting the torque and rotational speed of a signal cable winding reel and a position detection reel that contacts the signal cable, based on the measured value of the tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153582A JPS6038664B2 (en) | 1981-09-30 | 1981-09-30 | Flaw detector drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153582A JPS6038664B2 (en) | 1981-09-30 | 1981-09-30 | Flaw detector drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5794648A JPS5794648A (en) | 1982-06-12 |
| JPS6038664B2 true JPS6038664B2 (en) | 1985-09-02 |
Family
ID=15565634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56153582A Expired JPS6038664B2 (en) | 1981-09-30 | 1981-09-30 | Flaw detector drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038664B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207236A (en) * | 2012-01-12 | 2013-07-17 | 清华大学 | Inspection equipment used for spiral tube heat exchanger or steam generator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63187152A (en) * | 1987-01-30 | 1988-08-02 | Tokyo Electric Power Co Inc:The | Automatic ultrasonic flaw detection system of pipe |
-
1981
- 1981-09-30 JP JP56153582A patent/JPS6038664B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207236A (en) * | 2012-01-12 | 2013-07-17 | 清华大学 | Inspection equipment used for spiral tube heat exchanger or steam generator |
| CN103207236B (en) * | 2012-01-12 | 2015-03-04 | 清华大学 | Inspection equipment used for spiral tube heat exchanger or steam generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5794648A (en) | 1982-06-12 |
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