JP2010230337A - Data collection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data collection device with a simple device configuration capable of inexpensively collecting state data on a metal member in association with the positions of respective portions of the metal member. <P>SOLUTION: An ultrasonic probe 11 is used for detecting surface part signals of at least two portions of a specific domain of a metal member surface. The part signals detected by the ultrasonic probe are stored in advance in a reference position storage 12 as a reference position in the specific domain of the member surface. Surface part signals and state data on respective portions of the specific domain of the member surface are detected by a state detector 13. By a verification unit 14, a surface part signal corresponding to the part signal of the reference position stored in the reference position storage 12 is associated with the reference position among the part signals on the respective portions in the specific domain of the member surface detected by the state detector 13 while position information is allocated to the specific domain on the metal member surface on the basis of the reference position. The state data are stored in a state data storage 15 in association with the position information in the specific domain on the member surface allocated by the verification unit 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a data collection device that collects state data of a metal member in association with the position of each part of the metal member.

  In the piping of a power plant, internal thinning such as erosion and corrosion may occur. Therefore, in many cases, fixed-point thickness measurement using ultrasonic waves is performed, and in order to determine the measurement point, ancillary work such as ruled work on the pipe outer surface is required.

  For example, in non-destructive inspection of large-diameter pipes, a flaw detection scanning line is marked on the surface of the large-diameter pipe, and the flaw detection probe is brought into contact with the pipe using the marked flaw detection scanning line. The flaw detection is performed while checking the flaw detection waveform on the screen displayed on the display device. If there is a flaw or a thinned portion in the inspection object, a detailed flaw detection waveform is recorded at that location, and a quantitative and qualitative evaluation of the flaw or the thinned portion is performed based on the recorded flaw detection waveform. .

  In this case, as ancillary work, a ruled line work for determining the thickness measurement point on the outer surface of the pipe is necessary, and there is a possibility that a human error such as a deviation from the previous measurement position or an erroneous entry on the recording sheet may occur.

  Therefore, the image data of the inspection object and the scanning trajectory data of the flaw detection part scanned on the inspection object are measured by the sensor unit using the predetermined fixed point as a reference point, and the image processing unit is based on the measured image data. The three-dimensional shape data of the inspection object and the scanning trajectory data of the flaw detection unit on the three-dimensional shape data are calculated, and the coordinate correction unit coordinates with the three-dimensional shape data of the past inspection object stored in the storage unit Is corrected, the 3D shape data of the current inspection object is made to coincide with the coordinates of the 3D shape data of the past inspection object, and the scanning trajectory data of the past flaw detection part is guided and displayed on the display device. Even when the inspection object having a simple shape is flawed for a while, there is one in which workability and reproducibility are improved (for example, see Patent Document 1).

JP 2007-240342 A

  However, in Patent Document 1, a sensor unit that measures the scanning trajectory data of the flaw detection unit is necessary, and based on the image data measured by the sensor unit, the three-dimensional shape data of the inspection object and the three-dimensional shape thereof An arithmetic processing device for calculating the scanning trajectory data of the flaw detection portion on the data is required. Therefore, the apparatus becomes complicated and expensive.

  An object of the present invention is to provide a data collection device that can collect the state data of a metal member in association with the position of each location of the metal member with a simple apparatus configuration and at a low cost.

  A data collection device according to the invention of claim 1 is an ultrasonic probe for detecting at least two surface layer signals in a specific region on the surface of a metal member, and a surface layer signal detected by the ultrasonic probe. A reference position storage unit that stores a reference position of a specific region on the surface of the metal member, a state detection unit that detects a surface layer signal and state data of each part of the specific region on the surface of the metal member, and detection by the state detection unit Of the surface layer signal of each part of the specific region on the surface of the metal member, the surface layer signal corresponding to the surface layer signal of the reference position stored in the reference position storage unit is associated with the reference position and the reference position is referred to A state in which the state data is stored in association with the position information of the specific area on the surface of the metal member assigned by the collating unit, the collating unit that assigns the position information to the specific area on the surface of the metal member. Characterized by comprising a data storage unit.

  According to a second aspect of the present invention, there is provided the data collecting apparatus according to the first aspect, wherein the reference position is a plurality of fixed points that are predetermined as the places where the state data is collected.

  According to a third aspect of the present invention, there is provided the data collection device according to the first or second aspect, wherein the state detection unit scans a specific area on the surface of the metal member in a vertical direction or a horizontal direction, It is characterized by detecting status data.

  According to a fourth aspect of the present invention, there is provided the data collection device according to any one of the first to third aspects, wherein the state data storage section includes a plurality of states in time series for a specific region on the same metal member surface. It is characterized by storing data.

  According to a fifth aspect of the present invention, there is provided a data collecting apparatus according to the fourth aspect of the invention, further comprising a state data evaluation unit that compares time-series state data stored in the state data storage unit to obtain a secular change of the state data. It is characterized by that.

  According to a sixth aspect of the present invention, in the data collection device according to any one of the first to fifth aspects, the state detection unit is an ultrasonic probe, and the state data includes a thickness of a metal member, It is characterized by the presence or absence of scratches and the size of the scratches.

  A data collection device according to a seventh aspect of the present invention is the data collection device according to any one of the first to fifth aspects, wherein the metal member is a pipe.

  According to the present invention, at least two surface layer signals in a specific region on the surface of the metal member are detected by the ultrasonic probe, and the surface layer signal detected by the ultrasonic probe is detected in the specific region on the metal member surface. The reference position is stored in the reference position storage unit as a reference position, and the collation unit assigns position information to a specific area on the surface of the metal member based on the reference position stored in the reference position storage unit, and the state data detected by the state detection unit Since it is stored in the state data storage unit in association with the allocated position information, the state data of the metal member can be collected in association with the position information of the specific area on the surface of the metal member.

  Therefore, for example, in the case of flaw detection on a pipe, there is no need to make a ruled line for determining a fixed point for measurement of state data on the surface of the pipe, such as deviation from the previous measurement position or incorrect entry on a recording sheet. Human error can be prevented. As a result, the accuracy of the measurement position of the status data is improved, so it becomes possible to grasp the strict thickness reduction speed by comparing with the time-series status data at the same position, and it is possible to accurately manage the thickness of the pipe. .

1 is a configuration diagram of a data collection device according to a first embodiment of the present invention. Explanatory drawing of the surface layer part signal memorize | stored in the reference | standard position memory | storage part in the 1st Embodiment of this invention. Explanatory drawing of an example of allocation of the positional information in the collation part in the 1st Embodiment of this invention. Explanatory drawing of another example of allocation of the positional information in the collation part in the 1st Embodiment of this invention. The flowchart which shows the process of state data collection in the data collection device concerning the 1st Embodiment of this invention. The block diagram of the data collection device concerning the 2nd Embodiment of this invention.

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a data collection apparatus according to the first embodiment of the present invention. The ultrasonic probe 11 detects at least two surface layer signals of a specific region on the surface of the metal member when measuring state data of the specific region of the metal member. For example, a vertical probe is used. It is done. The surface layer signal detected by the ultrasonic probe 11 is stored in the reference position storage unit 12 as the reference position of the specific area on the surface of the metal member.

  FIG. 2 is an explanatory diagram of the surface layer signal stored in the reference position storage unit 12. FIG. 2 shows a case where surface layer signals are detected at three locations in the specific region S1 of the metal member, and the surface layer signals at the detection positions are stored as reference positions P1, P2, and P3. The specific region S1 of the metal member is, for example, a region to be inspected on the outer surface of the pipe, and the detection position for detecting the surface layer signal is selected in advance as a fixed point where it can be easily positioned as the reference position from the outside of the pipe. The surface layer signal at the reference positions P1, P2, and P3 in FIG. 2 is a unique signal unique to the part, and position information of the reference positions P1, P2, and P3 is determined in advance on the xy coordinates.

  The state detection unit 13 detects a surface layer signal and state data at each location in a specific area on the surface of the metal member. For example, the state detection unit 13 detects ultrasonic data as state data of the metal member. In the case of a probe, an oblique angle probe or a phased array probe that transmits ultrasonic waves from the surface of a metal member and receives reflected waves to detect flaws inside the pipe. In this case, the ultrasonic probe as the state detection unit 13 detects the thickness of the metal member, the presence / absence of a flaw, the size of the flaw, and the like as the state data.

  Here, when the ultrasonic probe is an oblique probe, the probe is a combination of an oblique probe and a vertical probe. This is because a flaw of the metal member is detected by the oblique angle probe, and a surface layer signal on the surface of the metal member is detected by the vertical probe. When the ultrasonic probe is a phased array probe, it is not necessary to provide a vertical probe. This is because the phased array probe has a function of transmitting ultrasonic waves at a predetermined angle by vibrating a plurality of transducers in order, so that the surface layer portion on the surface of the metal member is transmitted by transmitting ultrasonic waves in the vertical direction. This is because the signal can be detected.

  The surface layer signal and the state data on the surface of the metal member detected by the state detection unit 13 are input to the verification unit 14. In the collation unit 14, the surface layer signal corresponding to the surface layer signal of the reference position stored in the reference position storage unit 12 among the surface layer signals of each part of the specific region on the surface of the metal member detected by the state detection unit 13. Is associated with a reference position, and position information is assigned to a specific area on the surface of the metal member based on the reference position.

  FIG. 3 is an explanatory diagram of an example of allocation of position information in the collation unit 14, and FIG. 3A is an example of a surface layer signal at each location in a specific region on the surface of the metal member detected by the state detection unit 13. FIG. 3B is an explanatory diagram when position information is assigned to the surface layer signal of FIG.

  The state detector 13 scans the specific area S1 on the surface of the metal member and detects a surface layer signal and state data. In this case, the state detection unit 13 may be randomly scanned on the surface of the metal member, but it is desirable to scan the specific area S1 on the surface of the metal member in the vertical direction or the horizontal direction. This is because the arrangement of the surface layer signals in the order of input facilitates the processing when assigning the position information to the surface layer signals.

  Now, it is assumed that the surface area signal of each part of the specific region S1 on the metal member surface shown in FIG. 3A is obtained by scanning the specific region S1 on the metal member surface in the vertical direction or the horizontal direction. In FIG. 3A, ◯ and □ are surface layer signals detected by scanning of the state detection unit 13, and □ are surface layer signals at the reference positions P1, P2, and P3. The matching unit 14 searches the surface layer signal in FIG. 3A for a surface layer signal that matches the surface layer signals at the reference positions P1, P2, and P3 shown in FIG. Then, as shown in FIG. 3B, the reference positions P1, P2, and P3 shown in FIG. 2 are assigned to the matching surface layer signal □. Thus, after the position information of the reference positions P1, P2, and P3 is determined, the position information of the remaining surface layer signal ◯ is assigned.

  Therefore, as shown in FIG. 4, even if the specific area S1 on the surface of the metal member of the pipe to be inspected is shifted from the specific area S1 ′ actually scanned by the state detection unit 13, FIG. The position information corresponding to the reference positions P1, P2, and P3 shown in (1) can be assigned to the surface layer signal ◯ detected by the scanning of the state detection unit 13.

  The collation unit 14 outputs state data to the state data storage unit 15 in association with the position information of the specific region S1 on the surface of the metal member. The state data storage unit 15 stores the state data associated with the position information of the specific area on the surface of the metal member assigned by the collation unit 14. In addition, the state data measured in the past is also stored for the specific region S1 on the surface of the same metal member. Thus, a plurality of time-series state data are stored for specific regions on the same metal member surface.

  The state data associated with the position information of the specific area on the surface of the metal member stored in the state data storage unit 15 is output to the output device 16 as necessary. Thereby, the inspector can confirm the state data. In particular, it is possible to grasp time-series changes in state data by comparing and referring to a plurality of time-series state data.

  FIG. 5 is a flowchart showing a state data collection process in the data collection apparatus according to the first embodiment of the present invention. First, the surface layer signal at the reference position of the specific region S1 on the surface of the metal member is detected by the ultrasonic probe 11 (S1), and the detected surface layer signal is stored in the reference position storage unit 12 as the reference position (S2). . Next, the state detection unit 13 detects the surface layer signal and the state data of each part of the specific region S1 on the surface of the metal member (S3). Then, position information is assigned to the specific region S1 of the metal member by the collation unit 14 (S4), and state data is stored in the state data storage unit 15 in association with the assigned position information (S5).

  In the above description, the state detection unit 13 is an ultrasonic probe, and the case where the thickness of a metal member, the presence / absence of a flaw, and the size of a flaw is detected as the state data has been described. May be detected, or stress strain may be detected by a stress strain meter. Furthermore, the hardness may be detected with a hardness meter, and the temperature may be detected with a thermometer.

  According to the first embodiment, since the surface layer signal resulting from the vicinity of the surface layer portion by the ultrasonic wave from the ultrasonic probe 11 is used as the position information of the fixed point measurement at the time of the state data measurement, The position information of each part of the specific area S1 can be accurately specified. Further, the position information is assigned to a specific area on the surface of the metal member with the reference position as a reference, and the state data detected by the state detection unit 13 is stored in the state data storage unit 15 in association with the assigned position information. The state data can be collected in association with the position information of the specific region S1 on the surface of the metal member.

  As a result, for example, when measuring the wall thickness of the entire surface of a pipe thickness measurement during a periodic inspection of a power plant, the ultrasonic signal near the surface layer of the pipe is also acquired and collected as a reference position. The thickness value data at the aligned position can be recorded by matching the surface layer signal that has been detected and the surface layer signal collected by flaw detection. By repeating this thickness measurement, a thickness measurement value at the same position can be obtained each time.

  Next, a second embodiment of the present invention will be described. FIG. 6 is a configuration diagram of a data collection apparatus according to the second embodiment of the present invention. In the second embodiment, the state data for obtaining the secular change of the state data by comparing the time series state data stored in the state data storage unit 15 with respect to the first embodiment shown in FIG. An evaluation unit 17 is additionally provided. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

  The state data evaluation unit 17 inputs time-series state data of the metal member surface from the state data storage unit 15. For example, the state data measured two times before at the same position on the surface of the metal member, the state data measured last time, and the state data measured this time are input, and the change of the state data at that position is obtained. The change in the state data at the same position obtained by the state data evaluation unit 17 is output to the output device 16 as necessary. Thereby, the secular change of the site | part of the metal member can be evaluated.

  According to the second embodiment, a precise secular change can be grasped by comparison with time-series state data at the same position. For example, in the case where the metal member is a pipe, it is possible to accurately grasp the thinning rate and to accurately manage the thickness of the pipe.

DESCRIPTION OF SYMBOLS 11 ... Ultrasonic probe, 12 ... Reference | standard position memory | storage part, 13 ... State detection part, 14 ... Collation part, 15 ... State data storage part, 16 ... Output device, 17 ... State data evaluation part

Claims (7)

An ultrasonic probe for detecting at least two surface layer signals in a specific region on the surface of the metal member;
A reference position storage unit that stores a surface layer signal detected by the ultrasonic probe as a reference position of a specific region on the surface of the metal member;
A state detection unit for detecting a surface layer signal and state data of each part of the specific region on the surface of the metal member;
The surface layer signal corresponding to the surface layer signal of the reference position stored in the reference position storage unit among the surface layer signals of each part of the specific region on the surface of the metal member detected by the state detection unit is associated with the reference position. And a collation unit that assigns position information to a specific area on the surface of the metal member with reference to the reference position;
A data collection device comprising: a state data storage unit that stores the state data in association with position information of a specific area on the surface of the metal member assigned by the collation unit.   The data collection device according to claim 1, wherein the reference position is a fixed point at a plurality of locations that are predetermined as locations where the state data is collected.   The data collection according to claim 1, wherein the state detection unit detects the surface layer signal and the state data by scanning a specific region on the surface of the metal member in a vertical direction or a horizontal direction. apparatus.   4. The data collection device according to claim 1, wherein the state data storage unit stores a plurality of state data in a time series for a specific region on the same metal member surface. 5.   5. The data collection device according to claim 4, further comprising a state data evaluation unit that compares time-series state data stored in the state data storage unit to obtain a secular change of the state data.   The said state detection part is an ultrasonic probe, The said state data are the thickness of a metal member, the presence or absence of a flaw, and the magnitude | size of a flaw, The Claim 1 characterized by the above-mentioned. Data collection device.   The data collection device according to claim 1, wherein the metal member is a pipe.

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