• Title/Summary/Keyword: 인텔리전트 피그

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Development of the Odometer System for the Intelligent Pig (인텔리전트 피그를 위한 주행거리계의 개발)

  • Park, S.S.;Kim, D.K.;Yoo, H.R.;Cho, S.H.;Park, D.J.;Koo, S.J.;Rho, Y.W.;Lee, J.G.;Hong, H.S.;Seo, J.W.;Park, C.G.
    • Proceedings of the KSME Conference
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    • 2001.06b
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    • pp.222-227
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    • 2001
  • This paper introduces the spring-mounted odometer system which maintains the correct contact with the pipe wall and measures the distance along the pipe. The odometer wheel is designed to keep contact to the pipelines inner wall and to generate fifty rectangular pulses per one turn(l59.5681mm) during pigging. The pipeline has the defects in various types such as buckles, winkles, cracks, dents, welding point and so on. Specially, girth welding points which exist each 12m of the pipeline, much affects the operational environment of the odometer. The measurement error of the distance along the pipe is accumulated, for the measurement error of wheel's circumference and the pipeline inner environment. So, this paper proposes the method for the error compensation based on the analysis of the odometer's behavior around the girth welding point of pipe. The experimental results show that developed odometer system can be used for the intelligent pig with good performances.

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Development of Intelligent Pig for Detecting Corrosion on Pipeline Using MFL Technology (MFL 기술을 이용한 천연가스 배관 부식 검사용 인텔리전트 피그 개발)

  • Cho, S.H.;Kim, Y.K.;Park, D.J.;Yoo, H.R.;Koo, S.J.;Park, S.S.;Kim, D.K.;Rho, Y.W.
    • Proceedings of the KSME Conference
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    • 2001.06b
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    • pp.235-240
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    • 2001
  • This paper introduces developed prototype intelligent pig which detects corrosion on pipeline by using Magnetic Flux Leakage technology. The 8 inch developed MFL(Magnetic Flux Leakage) pig is composed of 5 yokes which magnetize pipeline wall and 45 Hall sensors which detect MFL signal. The designed MFL modules are analyzed by using magnetic circuit method in order to confirm whether pipeline wall is fully saturated. A variety of artificial defects are manufactured on 8 inch diameter steel pipeline in order to acquire MFL signals. So leakage flux of the axial, radial and circumferential component was acquired as defects. The results of this paper show that design technique for 8 inch MFL pig can be applied to large diameter MFL pig and 0.5mm defect depth can be detected.

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Development and Measurement Error Compensation of Odometer System for Intelligent PIG (인텔리전트 피그를 위한 주행거리계의 개발 및 측정오차 보상)

  • Kim D.K.;Park S.S,;Cho S.H.;Yoo H.R.;Park D.J.;Koo S.J.;Rho Y.W.;Kho Y.T
    • Journal of the Korean Institute of Gas
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    • v.6 no.1 s.17
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    • pp.17-23
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    • 2002
  • This paper introduces the spring-mounted odometer system which maintains the correct contact with the pipe wall and measures the distance along the pipe. The odometer wheel is designed to keep contact to the pipelines inner wall and to generate fifty rectangular pulses per one turn(159.5681mm) during pigging. The pipeline has the defects in various types such as buckles, winkles, cracks, dents, welding point and so on. Specially girth welding points which exist each 12m of the pipeline, much affects the operational environment of the odometer. The measurement error of the distance along the pipe is accumulated, for the measurement error of wheel's circumference and the pipeline inner environment. So, this paper proposes the method for the error compensation based on the analysis of the odometer's behavior around the girth welding point of pipe. The experimental results show that developed odometer system can be used for the intelligent pig with good performances.

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