• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An automatic ultrasonic flaw detecting system adapted to search flaws on steel pipes being continuously transferred and provide markings at the positions of flaws on the steel pipes. The system comprises a probe adapted to search flaws on the steel pipe, a holder for the probe, and a flaw pulse generation circuit adapted to generate flaw pulse signals in response to the flaw signals from the probe. A travel measurement pulse generator generates measurement pulse signals by measuring the distance which the steel pipes have travelled. A pipe and sensor detects the end of the steel pipe and generates pipe end detection signals. A flaw tracking control apparatus tracks the flaws in response to the flaw pulse signals, the measurement pulse signals and the pipe end detecting signals and generates marking control signals. A marking is provided at the position of flaws detected on the steel pipe in response to the marking control signals.
    公开号:SU1561833A3
    申请号:SU874202537
    申请日:1987-04-08
    公开日:1990-04-30
    发明作者:Сенба Такаси；Татикава Сатору
    申请人:Мицубиси Денки Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the technique of ultrasonic flaw detection of pipes and can be used to detect defective steel pipes to mark them.
    The purpose of the invention is to increase reliability and efficiency by eliminating the erroneous rejection of pipes following one after another at different intervals.
    Fig. 1 shows a block diagram of an automatic ultrasonic crack detection system in steel pipes; Fig. 2 shows the layout of the sensors of an automatic ultrasound system when monitoring steel pipes supplied continuously; on
    FIG. 3 - 5 - options for supplying pipes for control, respectively, with large intervals, continuously without gaps and with small intervals, and corresponding timing diagrams explaining the operation of the system.
    Automatic Ultrasonic System
    The topic of detecting cracks in steel pipes (Fig. 1) contains a series-connected electro-acoustic transducer 1, an ultrasonic flaw detector unit 2, a tracking shift register 3, a marking pulse generator 4 and a marking device 5, a series-connected path sensor 6 and a counter 7 whose output is connected to the second entrance
    sd
    3
    00 00
    with

    cm
    the shift register 3 tracks, and the eddy current sensor 8 and the driver of the eddy current pulses sequentially connected, the photoelectric sensor 10 of the pipe in the control zone connected in series, the amplifier 11 and the pulse generator 12, the second input of which is connected to the eddy current pulse 9 and the output to the third input of the shift register 3 tracking with
    FIG. 1 and 2, reference numeral 13 denotes a control unit, and reference numerals 14 and 15 are control pipes.
    The automatic ultrasonic crack detection system in steel pipes operates as follows.
    When pipes are fed to the control at long intervals (Fig. 3) at the time the front end of the (n + 1) -th steel pipe passes through the photoelectric sensor 10 of the pipe, provided that the rear end of the previous 5th steel pipe has already passed through the eddy current sensor 8, the pulse generator 12, generates two pulses (FIG. 3c) in response to a change in the corresponding output signals of the pulse former 9 (FIG. 3a) amplifier 11 (FIG. 3); the generation of two pulses (Fig. 3c) means that the steel pipes are individually controlled.
    If the front end of the (n + 1) th steel pipe and the rear end of the nth steel pipe are transmitted in close proximity to each other (Fig. 4)
    The eddy current sensor 8 sends a signal to detect the end of the tube, and the photoelectric sensor 10 does not produce a signal, remaining in the logical 1 position (Fig. 4b). Consequently, the generator produces one pulse (Fig. 4c); of the end of the pipe in response to a change in the output signal of the pulse shaper 9 (Fig. 4a), and this momentum of the end of the pipe indicates that the steel pipes are continuously monitored.
    When pipes are fed to the control with small intervals at the moment of passing the front end (n + 1.) Of the steel pipe through the photoelectric sensor 10, the presence of the pipe in the control zone at
    O
    five
    0
    S
    provided that the rear end of the nth steel pipe has not yet reached the eddy current sensor 8, i.e., if there is a small gap between the steel pipes (for example, 1-400 mm), the pulse generator 12 gives one pulse to the end of the pipe in response on the change in the output signal of the driver 9 pulses of eddy current; this impulse indicates that steel pipes are continuously supplied.
    Signals from the output of the pulse generator 12, information from the output of the counter 7 about the length of the path traveled by the sensor 6 regarding the flow of monitored pipes and signals from the output of the ultrasonic flaw detector unit 2 about the detected defects go to the inputs of the tracking shift register 3. Signals from the output of the latter (Fig. 3d, Fig. 4c1 and Fig. 5c. When a defect in the test pipe is detected, the pulse shaper 4 is triggered, at the command of which the pipe is marked with a marking device 5.
    20
    权利要求:
    Claims (1)
    [1]
    30 claims
    Automatic ultrasonic crack detection system in steel pipes, containing a series-connected electro-acoustic transducer, an ultrasonic flaw detector unit, a shift shift register, a marking pulse generator and a marking device, a series-connected pulse path sensor and a counter whose output is connected to the second input of the shift shift register, and in series United eddy current sensor and eddy current pulse driver, characterized in
    that, in order to increase the reliability and efficiency of crack detection, it is equipped with a tube-connected sensor in the control zone, an amplifier and a pulse generator, the second input of which is connected to the output of the eddy current pulse former and the third input of the shift tracking register.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1561833A3|1990-04-30|Automatic ultrasonic system for detecting cracks in steel pipes
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    SU862056A1|1981-09-07|Automatic plant for complex non-destructive testing
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    JPS57122360A|1982-07-30|Ultrasonic wave flaw detecting device for inner surface of small pipe
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    同族专利:
    公开号 | 公开日
    DE3611370C2|1989-01-12|
    GB2184545B|1988-08-17|
    GB8607802D0|1986-04-30|
    GB2184545A|1987-06-24|
    GB2175091A|1986-11-19|
    GB8701602D0|1987-03-04|
    GB2175091B|1988-08-17|
    SU1416064A3|1988-08-07|
    DE3611370A1|1986-10-09|
    US4700572A|1987-10-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1773531A1|1968-05-30|1971-03-18|
    JPS55138649A|1979-04-17|1980-10-29|Fuji Electric Co Ltd|Flaw position detecting and marking device|
    DE2939132C2|1979-09-27|1985-01-24|Nukem Gmbh, 6450 Hanau|Procedure for the non-destructive testing of tubes and rods using ultrasound|
    DE3114850C2|1981-04-09|1984-05-30|Mannesmann AG, 4000 Düsseldorf|Device for testing elongated, round workpieces that move helically in their longitudinal direction, such as tubes and rods, over their entire length|
    US4487072A|1982-08-11|1984-12-11|Livingston Waylon A|Ultrasonic testing of tubular goods|GB8724326D0|1987-10-16|1987-11-18|Capo Bianco A|Furniture|
    DE4109625A1|1991-03-23|1992-09-24|Krautkraemer Gmbh|ULTRASONIC MEASUREMENT METHOD FOR THE WALL THICKNESS DEVELOPMENT OF A WELDED SEAM OF A PIPE|
    US5392652A|1992-04-07|1995-02-28|Lambert, Macgill, Thomas, Inc.|Method and apparatus for inspection of metal objects utilizing variable angle ultrasonic transducer|
    US5426978A|1992-10-09|1995-06-27|Mitsubishi Denki Kabushiki Kaisha|Non-destructive axle flaw detecting apparatus|
    US6902193B2|2000-09-29|2005-06-07|Hoon Y. Kim|Supplemental restraint system|
    US6748808B2|2001-08-14|2004-06-15|Varco I/P, Inc.|Flaw detection in tubular members|
    US6622561B2|2001-08-14|2003-09-23|Varco I/P, Inc.|Tubular member flaw detection|
    US6578422B2|2001-08-14|2003-06-17|Varco I/P, Inc.|Ultrasonic detection of flaws in tubular members|
    US6862099B2|2002-04-05|2005-03-01|Varco I/P|Tubular ovality testing|
    US6931748B2|2002-04-05|2005-08-23|Varco I/P, Inc.|Riser and tubular inspection systems|
    US6945113B2|2002-08-02|2005-09-20|Siverling David E|End-to-end ultrasonic inspection of tubular goods|
    US6772636B2|2002-11-06|2004-08-10|Varco I/P, Inc.|Pipe flaw detector|
    US6912905B2|2003-07-11|2005-07-05|Siemens Westinghouse Power Corporation|Automated tool for ultrasonic inspection of brazed joints|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP60070311A|JPH0572543B2|1985-04-03|1985-04-03|
    JP4942185U|JPH0531571Y2|1985-04-03|1985-04-03|
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