WO2017090390A1 - Dispositif et procédé de mesure d'épaisseur de tuyauterie utilisant des ondes ultrasonores - Google Patents

Dispositif et procédé de mesure d'épaisseur de tuyauterie utilisant des ondes ultrasonores Download PDF

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Publication number
WO2017090390A1
WO2017090390A1 PCT/JP2016/082507 JP2016082507W WO2017090390A1 WO 2017090390 A1 WO2017090390 A1 WO 2017090390A1 JP 2016082507 W JP2016082507 W JP 2016082507W WO 2017090390 A1 WO2017090390 A1 WO 2017090390A1
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WO
WIPO (PCT)
Prior art keywords
pipe
ultrasonic
ultrasonic waves
pipe thickness
thickness measuring
Prior art date
Application number
PCT/JP2016/082507
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English (en)
Japanese (ja)
Inventor
永島　良昭
Original Assignee
株式会社日立製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to MYPI2018701066A priority Critical patent/MY196011A/en
Priority to JP2017552334A priority patent/JP6458167B2/ja
Publication of WO2017090390A1 publication Critical patent/WO2017090390A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
    • 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
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • 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

Definitions

  • the present invention relates to a pipe thickness measuring device and method used in, for example, a plant.
  • Pipes of power plants, chemical plants, etc. will have defects (thinning) on the inner surface after a long period of time. As this thinning progresses, there is a risk that the internal fluid that passes through the thick wall of the pipe and flows through the pipe, such as liquid and vapor, will leak to the outside. In order to avoid such leakage of internal fluid, it is necessary to grasp the state of thinning by regular non-destructive inspection of piping, and to take measures such as replacement and repair.
  • An ultrasonic thickness meter that measures the thickness of an inspection object is known as a non-destructive inspection means for non-destructive inspection of the thickness of a pipe.
  • an ultrasonic sensor having a piezoelectric element capable of mutually converting electricity and sound is generally used.
  • Install an ultrasonic sensor on the outer surface of the pipe transmit ultrasonic waves (longitudinal waves and transverse waves) to the pipe to be inspected, and receive the ultrasonic waves reflected on the inner surface of the pipe with the same or another ultrasonic sensor to obtain the thickness of the pipe. Measure the thickness.
  • this ultrasonic thickness gauge has a narrow inspection range, in order to inspect a wide range, it is necessary to inspect a plurality of locations along the pipe, which requires a long inspection time.
  • the application may be difficult, for example, when the pipe is buried, when a heat insulating material is installed around the pipe, or when the pipe is doubled.
  • Patent Document 1 discloses an in-tube insertion type ultrasonic flaw detection apparatus having an ultrasonic pulse generation / reception unit, a control unit, a recording unit, and the like inside the apparatus.
  • Patent Document 2 discloses a measuring device in which electromagnetic ultrasonic probes are three-dimensionally arranged in a spherical measuring device main body and moved in a pipe.
  • Patent Document 3 discloses a technique for measuring a water leak location, a water leak amount, and an air reservoir position by having an acoustic sensor in a sphere and detecting and recording a sound generated by a leak or an air reservoir in a pressure tube. Is disclosed.
  • the device structure is divided into a plurality of units such as a sensor unit, a pulsar receiver unit, and a power supply unit, and these are arranged and connected along the pipe axis direction.
  • an electromagnetic ultrasonic probe is three-dimensionally arranged in a spherical measuring device main body, but the electromagnetic ultrasonic probe is an object that transmits and receives ultrasonic waves (in this case, the inner wall of a pipe). ) Must be close to the inner diameter of the pipe. Therefore, there is a problem that it is not possible to cope with a change in the diameter of the pipe, and there is a concern that the pipe cannot pass when there is a deposit on the inner wall of the pipe.
  • Patent Document 3 an acoustic sensor is provided in the sphere, but a technique for measuring the thickness of the pipe is not disclosed.
  • the present invention has been made in view of the above, and provides a pipe thickness measuring apparatus and method using ultrasonic waves of an independent type (cableless) for measuring the thickness of a pipe having a discontinuous structure from the inner surface.
  • the purpose is to do.
  • a pipe thickness measuring apparatus includes a plurality of ultrasonic sensors that transmit and receive ultrasonic waves to and from the liquid in the pipe, and ultrasonic waves.
  • the pipe thickness is calculated by using means for transmitting and receiving, means for measuring and recording a plurality of reflected wave propagation times for each ultrasonic sensor, and propagation time of ultrasonic waves that are incident substantially perpendicularly to the inner wall of the pipe. It has the means.
  • a pipe thickness measuring method is a pipe thickness measuring method using ultrasonic waves, comprising: a pipe thickness measuring device comprising a plurality of ultrasonic sensors and means for transmitting and receiving ultrasonic waves. It is arranged so that it can move in the pipe, and the reflected wave propagation time is measured from the inside of the pipe by each ultrasonic sensor on the pipe thickness measuring device, and is incident substantially perpendicular to the inner wall of the pipe. The pipe thickness is calculated using the propagation time of ultrasonic waves.
  • FIG. 1 is a diagram schematically showing an overall configuration of a pipe thickness measuring apparatus using ultrasonic waves according to the present embodiment, together with pipes to be inspected.
  • a pipe thickness measuring device 2 is output from an ultrasonic sensor 11, an ultrasonic transmission / reception unit 12 that drives the ultrasonic sensor 11 and receives a waveform signal from the ultrasonic sensor 11, and an ultrasonic transmission / reception unit 12.
  • An ultrasonic wave propagation time measuring / recording means 14 for converting the waveform signal into a digital waveform signal and measuring and recording the ultrasonic wave propagation time, and a pipe thickness calculating means 15 for calculating the pipe thickness from the propagation time.
  • a plurality of ultrasonic transmission sensors 11 are arranged around the pipe thickness measuring device 2 and connected to the ultrasonic transmission / reception means 12 by a coaxial cable or the like.
  • the ultrasonic sensor 11 is composed of, for example, a piezoelectric element.
  • the ultrasonic transmission / reception means 12 is connected to the ultrasonic propagation time measurement / recording means 14 by a digital cable, and applies a transmission waveform signal to the ultrasonic transmission sensor 11 under the control of the pipe thickness calculation means 15. Furthermore, the ultrasonic sensor 11 amplifies the received waveform signal from 11 and outputs the received waveform signal.
  • the posture measuring means 13 is composed of a gyroscope or the like, and measures a relative change in the posture of the pipe thickness measuring device 2.
  • the ultrasonic propagation time measurement / recording means 14 is composed of an A / D converter, a memory and the like, and records the received waveform data received by the ultrasonic transmission sensor 11.
  • the pipe thickness calculation means 15 calculates the pipe thickness based on the received waveform data recorded by the ultrasonic propagation time measurement / recording means 14.
  • the pipe thickness measuring device 2 It is appropriate for the pipe thickness measuring device 2 to move substantially on the central axis of the pipe 1, and the volume and mass should be adjusted so as to have a neutral buoyancy with respect to the liquid 8.
  • the pipe thickness measuring apparatus 2 is arranged around the pipe thickness measuring apparatus 2 by arranging a string-like elastic body having a thickness that does not affect the propagation of ultrasonic waves. Can be moved almost on the central axis.
  • step S101 the pipe thickness measuring device 2 is put into the pipe 1.
  • step S102 the ultrasonic transmission / reception means 12 drives one of the ultrasonic transmission sensors 11, and receives the ultrasonic waves by the same ultrasonic transmission sensor 11.
  • step S103 the ultrasonic wave propagation time measurement / recording means 14 records the ultrasonic reception waveform as digital waveform data.
  • step S104 the pipe thickness calculation means 15 calculates the pipe thickness.
  • Steps S ⁇ b> 102 to S ⁇ b> 104 are repeated for all the ultrasonic sensors 11. For example, as shown in FIG. 3, when 26 ultrasonic sensors 11 are arranged around the pipe thickness measuring device 2, the process is repeated for the 26 ultrasonic sensors 11. At this time, if there is an inner wall that faces the ultrasonic sensor 11 within the range of the directivity angle of the ultrasonic sensor 11, it is substantially perpendicular to the inner wall of the pipe 1 as shown by the ultrasonic wave 61 shown by the solid line. There is a propagation path incident on the.
  • FIG. 4 schematically shows each received signal.
  • FIG. 4A shows the received signal 21 of the ultrasonic wave 61 incident substantially perpendicularly to the inner wall of the pipe 1, passing through the signal 21 a reflected on the surface of the inner wall of the pipe and the surface of the inner wall of the pipe 1.
  • a signal 21b reflected on the outer wall of the pipe 1 is observed (21b may be repeatedly observed).
  • FIG. 4B shows the reception signal 22 of the ultrasonic wave 62 that is not perpendicularly incident on the inner wall of the pipe 1 and no reflected wave is observed.
  • steps S102 to S104 for all ultrasonic sensors 11 is repeated at a specific time interval. For example, as shown in FIG. 5, when the pipe thickness measuring device is inserted at the position shown in 2a, the pipe 1 is flowed until the distance L advances, and the pipe thickness measuring device is collected at the position shown in 2b, During this time, steps S102 to S104 are repeated.
  • step S106 the pipe thickness measuring device 2 is recovered from the pipe 1.
  • FIG. 6 shows an example of a screen in which the pipe thickness data recorded in the collected pipe thickness measuring device 2 is displayed with the horizontal axis as the pipe axis direction distance L (m) and the vertical axis as the ultrasonic sensor channel. It is shown.
  • the pipe shown in FIG. 5 is an example in which the thinnings 31 and 32 exist in the same circumferential direction of the pipe 1, but the pipe thickness measuring device 2 flows in the pipe 1 while rotating three-dimensionally.
  • the eight ultrasonic sensors 11 in which pipe thickness measurement data exist vary depending on the pipe axis direction distance L. However, the thinned portion thickness measurement results 41a and 42a corresponding to the thinnings 31 and 32 are displayed by any of the eight ultrasonic sensors 11.
  • the device structure is divided into a plurality of units such as a sensor unit, a pulsar receiver unit, a power supply unit, etc., and these are arranged and connected along the pipe axis direction.
  • a device In such a long structure of the entire apparatus, there is a possibility that the discontinuous part (branch or the like) of the piping structure cannot be smoothly passed.
  • a measuring device in which electromagnetic ultrasonic probes are arranged three-dimensionally in a spherical measuring device body and moved in a pipe.
  • the electromagnetic ultrasonic probe needs to be close to the object (in this case, the pipe inner wall) that transmits and receives ultrasonic waves
  • the spherical outer diameter needs to be substantially the same as the pipe inner diameter. Therefore, there is a problem that it is not possible to cope with a change in the diameter of the pipe, and there is a concern that the pipe cannot pass when there is a deposit on the inner wall of the pipe.
  • the pipe thickness measuring apparatus 2 using ultrasonic waves a plurality of ultrasonic sensors 11 that transmit and receive the ultrasonic waves 6 to and from the liquid 8 in the pipes 1 and ultrasonic waves.
  • the pipe thickness is determined by using the means 12 for transmitting / receiving, the means 14 for measuring / recording a plurality of reflected wave propagation times for each ultrasonic sensor 11, and the propagation time of the ultrasonic wave substantially perpendicularly incident on the pipe inner wall. Since the calculating means 15 is provided, it is possible to measure the thickness of the pipe having the structural discontinuity portion.
  • FIG. 7 is a flowchart showing a pipe thickness measurement method using ultrasonic waves according to the second embodiment of the present invention. Since the operations other than step S104 are the same as those in the first embodiment, description thereof will be omitted.
  • step S105 ultrasonic waves are transmitted to all ultrasonic sensors 11 at every time interval (step S102), received waves are recorded (step S103), and pipe thicknesses are calculated (step S104). The posture of the pipe thickness measuring device 2 is recorded.
  • FIG. 8 is a diagram schematically showing the result of pipe thickness measurement according to the present example for the pipe shown in FIG. Since the posture data of the pipe thickness measuring device 2 for each hour is recorded, the ultrasonic wave is incident substantially perpendicular to the inner surface of the pipe 1 among the 26 ultrasonic sensors 11 of the pipe thickness measuring device 2. It is possible to identify a sensor that can measure ultrasonic waves to be measured, and to grasp the relative position of the ultrasonic sensor 11 with respect to the circumferential position of the pipe 1. From this, at the positions corresponding to the thinnings 31 and 32, the thickness of the thinning part is measured as 41b and 42b. That is, it is possible to display the pipe circumferential direction position of the thinning.

Abstract

L'invention concerne un procédé et un dispositif autonome pour mesurer l'épaisseur de tuyauterie à l'aide d'ondes ultrasonores, l'épaisseur de tuyauterie comportant une partie à discontinuité structurale étant mesurée depuis une surface intérieure de celle-ci. Le dispositif de mesure d'épaisseur de tuyauterie utilisant des ondes ultrasonores comprend une pluralité de capteurs ultrasonores pour émettre et recevoir des ondes ultrasonores vers et depuis un liquide dans une tuyauterie, des moyens pour émettre et recevoir des ondes ultrasonores, des moyens pour mesurer et enregistrer une pluralité de temps de propagation d'ondes réfléchies pour chaque capteur ultrasonore, et un moyen pour calculer une épaisseur de tuyauterie à l'aide des temps de propagation d'ondes ultrasonores incidentes essentiellement perpendiculaires à une paroi intérieure de tuyauterie.
PCT/JP2016/082507 2015-11-26 2016-11-02 Dispositif et procédé de mesure d'épaisseur de tuyauterie utilisant des ondes ultrasonores WO2017090390A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MYPI2018701066A MY196011A (en) 2015-11-26 2016-11-02 Device and Method for Measuring Piping Thickness Using Ultrasonic Waves
JP2017552334A JP6458167B2 (ja) 2015-11-26 2016-11-02 超音波を用いた配管厚さ測定装置及びその方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-230191 2015-11-26
JP2015230191 2015-11-26

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WO2017090390A1 true WO2017090390A1 (fr) 2017-06-01

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MY (1) MY196011A (fr)
WO (1) WO2017090390A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115308308A (zh) * 2022-10-10 2022-11-08 山东广悦化工有限公司 一种柴油管道防腐检测装置及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003004710A (ja) * 2001-06-21 2003-01-08 Daido Steel Co Ltd 肉盛管の検査方法
JP2011075384A (ja) * 2009-09-30 2011-04-14 Mitsubishi Heavy Ind Ltd 管内挿入式超音波探傷検査装置及び超音波探傷検査システム
JP2013092505A (ja) * 2011-10-27 2013-05-16 Shin Nippon Hihakai Kensa Kk 配管厚測定装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587534A (en) * 1994-10-28 1996-12-24 The United States Of America As Represented By The Secretary Of Commerce Wall thickness and flow detection apparatus and method for gas pipelines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003004710A (ja) * 2001-06-21 2003-01-08 Daido Steel Co Ltd 肉盛管の検査方法
JP2011075384A (ja) * 2009-09-30 2011-04-14 Mitsubishi Heavy Ind Ltd 管内挿入式超音波探傷検査装置及び超音波探傷検査システム
JP2013092505A (ja) * 2011-10-27 2013-05-16 Shin Nippon Hihakai Kensa Kk 配管厚測定装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115308308A (zh) * 2022-10-10 2022-11-08 山东广悦化工有限公司 一种柴油管道防腐检测装置及其使用方法
CN115308308B (zh) * 2022-10-10 2022-12-13 山东广悦化工有限公司 一种柴油管道防腐检测装置及其使用方法

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JPWO2017090390A1 (ja) 2018-06-21
MY196011A (en) 2023-03-06

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