CN210155086U - Small-diameter pipe phased array ultrasonic detection reference block - Google Patents
Small-diameter pipe phased array ultrasonic detection reference block Download PDFInfo
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- CN210155086U CN210155086U CN201920396233.6U CN201920396233U CN210155086U CN 210155086 U CN210155086 U CN 210155086U CN 201920396233 U CN201920396233 U CN 201920396233U CN 210155086 U CN210155086 U CN 210155086U
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- 238000012360 testing method Methods 0.000 claims abstract description 27
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- 230000006378 damage Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 description 33
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- 238000004088 simulation Methods 0.000 description 5
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- 238000003384 imaging method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
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Abstract
The utility model discloses a small-diameter tube phased array ultrasonic testing reference block, which comprises a middle tube section (2), a first checking section (1) and a second checking section (3) at two ends, wherein the end part of the first checking section (1) is provided with an arc surface (4) and is internally provided with a first through hole (5), and the axis of the first through hole (5) is positioned on the inner hole extending surface of the middle tube section (2); a first long through hole (7), a second long through hole (8) and an arc-shaped groove (9) are arranged in the second checking section (3), and the axis of the first long through hole (7) is positioned on the excircle extension surface of the middle pipe section (2); the outer circle and the inner hole of the middle pipe section (2) are respectively provided with a first blind hole (10) and a second blind hole (11), and the outer circle of the middle pipe section (2) is also provided with an outer arc-shaped groove (12); the utility model discloses can respond the influence of minor diameter intraductal outer wall to ultrasonic sound beam reflection, ensure the uniformity of each time reflection wave detectivity, improve defect quantitative accuracy and reliability to reduce the hourglass of harm punctiform defect and examine the risk.
Description
Technical Field
The utility model relates to an ultrasonic testing contrast test block especially is used for path pipe phased array ultrasonic testing contrast test block.
Background
The method has the advantages of high detection efficiency, visual imaging, good applicability, digitization, no radiation and the like, gradually becomes a main method for detecting the quality of the welding joints of the small-diameter pipes with welding seams of on-site working conditions and complex structures, and has wide application prospect. In order to objectively and uniformly evaluate the detected defects, a reference block with standard artificial injuries (through holes or grooves) is calibrated before phased array ultrasonic detection, a distance amplitude curve DAC or TCG is manufactured, appropriate detection sensitivity is set, then detection is carried out on a workpiece, and the defects are evaluated through comparison of the distance amplitude curve DAC or TCG and the reference block. Because the small-diameter tube has small diameter and thin wall thickness, the test block needs to adopt the same tube diameter and wall thickness, in order to overcome the limitation of welding width and the size of the front edge of a probe and obtain better imaging resolution, in order to ensure that the whole detected welding seam area is fully covered by phased array ultrasonic sound beams, secondary waves, tertiary waves or quartic waves which are reflected once or many times are generally used for detection during detection; the inner wall of the small-diameter tube has a dispersing effect on ultrasonic reflection, and the outer wall of the small-diameter tube is used for gathering ultrasonic reflection, so that a welding seam defect signal detected by phased array ultrasound contains comprehensive influence of inner wall scattering and outer wall gathering, and secondary waves, tertiary waves and quartic waves detect that the same defect is completely different from the comprehensive influence of the inner wall scattering and the outer wall gathering, which possibly causes a larger error of defect quantification, particularly the quantitative error of the small-diameter tube with a large wall thickness ratio is more obvious. The conventional small-diameter tube phased array ultrasonic detection reference test block is generally a GS-like transverse through hole test block, as shown in fig. 1 and 2, the end part of the test block is provided with an arc surface 21, a stepped hole 22 and two rows of transverse through holes 23 and 24 are arranged in the test block, during detection, a probe is placed on the arc surfaces of the upper end and the lower end of the test block and moves, the probe is aligned to the arc surface 21 and is used for calibrating the delay, the front edge size and the angle gain of a wedge block of the probe, and the probe is aligned to the two rows of transverse through holes 23 and 24 and is used for calibrating and manufacturing a DAC or TCG; the test block is convenient to check, but the whole test block is blocky and cannot reflect the influence of the inner wall and the outer wall of the tubular workpiece on ultrasonic beam reflection, so that the defect detection quantitative error is large, the detection sensitivity is set only by utilizing the transverse through hole, the point defects cannot be simulated, and the damage to the point defects and the omission inspection are easily caused.
Disclosure of Invention
The utility model aims at prior art's the aforesaid is not enough, provides a path pipe phased array ultrasonic testing contrast test block, and it can react the intraductal outer wall of path to ultrasonic wave acoustic beam reflection influence, ensures the uniformity of each time reflection wave detectivity, has improved defect quantitative accuracy and reliability to the hourglass of harm punctiform defect is reduced and is examined the risk.
In order to achieve the above object, the utility model discloses a path pipe phased array ultrasonic testing contrast test block, including the first check-up section, the second check-up section of integrative associative middle part pipeline section and both ends, wherein first check-up section is equipped with the same external diameter of the outer disc of middle part pipeline section and coaxial at least partial cambered surface, is equipped with the arc radius and the same arc surface of middle part pipeline section external diameter at the tip of first check-up section, and the centre of a circle of arc surface is located middle part pipeline section excircle extension face, its characterized in that: a first through hole is also formed in the first checking section, and the axis of the first through hole is positioned on the inner hole extending surface of the middle pipe section; a first long through hole, a second long through hole and a calibration hole communicated with the inner hole of the middle pipe section are arranged in the second calibration section, the axis of the first long through hole is positioned on the extension surface of the excircle of the middle pipe section, and an arc-shaped groove is arranged on the inner wall of the calibration hole; the outer circle and the inner hole of the middle pipe section are respectively provided with a first blind hole and a second blind hole, and the outer circle of the middle pipe section is also provided with an outer arc-shaped groove;
the arc surface of the utility model is used for calibrating the delay, the front edge size and the angle gain supplement of the probe wedge block; the first through hole with the axis positioned on the extending surface of the inner hole of the middle pipe section is used for calibrating the sensitivity of odd-numbered times (such as first and third times); the first long through hole with the axis positioned on the extension surface of the outer circle of the pipe is used for calibrating the sensitivity of even-numbered waves (such as second and fourth waves), the second long through hole is used for calibrating and setting the detection sensitivity of the fillet weld reinforcement high area of the small-diameter pipe, the position is set according to the designed weld height and weld width of the fillet weld of the workpiece to be detected, and the arc-shaped groove is used for simulating the opening defect of the weld of the inner wall;
the middle pipe section is used for simulating a workpiece to be detected, the ratio (R/R) of the outer diameter, the wall thickness and the inner diameter of the middle pipe section is similar to that of the workpiece to be detected so as to simulate the reflection influence of the inner wall and the outer wall of the pipe on the sound beam propagation process, the first blind hole and the second blind hole of the outer circle and the inner hole of the middle pipe section are used for simulating the harmful point defects and guiding the scanning sensitivity setting of the detection process, and the outer arc-shaped groove of the middle pipe section is used for simulating the;
as a further improvement of the present invention, the first checking section and the second checking section are both provided with two parallel side surfaces, and the first through hole, the first long through hole and the second long through hole are both perpendicular to the respective side surfaces; the first through hole, the first long through hole, the second long through hole and the arc surface are convenient to process, the precision is ensured, and the detection accuracy is improved;
as a further improvement of the utility model, a second through hole is arranged in the first checking section, and the second through hole is axially positioned between the arc surface and the first through hole of the inner hole extending surface of the middle pipe section; the second through hole can be used for time delay calibration of wedge blocks of different detection devices;
as a further improvement of the present invention, the first blind hole, the second blind hole and the section of outer arc-shaped groove of the middle pipe section are all located on the same radial cross section; each simulation defect of the middle pipe section can be detected at one time;
to sum up, the utility model discloses can respond the minor diameter intraductal outer wall of response to ultrasonic wave acoustic beam reflection influence, ensure the uniformity of each time reflection wave detectivity, improve defect quantitative accuracy and reliability to reduced the hourglass of harm punctiform defect and examined the risk.
Drawings
Fig. 1 is a front view of a conventional GS transverse through-hole test block.
Fig. 2 is a top view of fig. 1.
Figure 3 is a front view of an embodiment of a reference block of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a sectional view taken along line B-B of fig. 3.
Fig. 6 is a cross-sectional view taken along line C-C of fig. 3.
Fig. 7 is a cross-sectional view taken along line D-D of fig. 3.
Fig. 8 is a schematic diagram of a detection status according to the present invention.
Fig. 9 is a schematic diagram of another detection state of the present invention.
FIG. 10 is a schematic view of another detection status of the present invention
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 3 to 7, the small-diameter tube phased array ultrasonic testing reference block of the embodiment includes a middle tube section 2 and a first verification section 1 and a second verification section 3 at two ends, which are integrally connected, the first verification section 1 is provided with a partial arc surface having the same outer diameter as the outer circular surface of the middle tube section 2 and coaxial with the outer circular surface, both the first verification section 1 and the second verification section 3 are provided with two parallel side surfaces, an arc surface 4 having the same arc radius as the outer diameter of the middle tube section 2 is provided at an end of the first verification section 1, the center of the arc surface 4 is located on the outer circular extension surface of the middle tube section 2, a first through hole 5 and a second through hole 6 are provided in the first verification section 1, the axis of the first through hole 5 is located on the inner hole extension surface of the middle tube section 2, and the second through hole 6 is axially located between the arc surface 4 and the first through; a first long through hole 7, a second long through hole 8 and a checking hole communicated with an inner hole of the middle pipe section 2 are arranged in the second checking section 3, the axis of the first long through hole 7 is positioned on the excircle extension surface of the middle pipe section 2, and an arc-shaped groove 9 is arranged on the inner wall of the checking hole; the first through hole 5, the second through hole 6, the first long through hole 7 and the second long through hole 8 are all vertical to the two side surfaces of the two through holes; the outer circle and the inner hole of the middle pipe section 2 are respectively provided with a first blind hole 10 and a second blind hole 11, the outer circle of the middle pipe section 2 is also provided with a section of outer arc-shaped groove 12, and the first blind hole 10, the second blind hole 11 and the section of outer arc-shaped groove 12 are all positioned on the same radial section; the cross sections of the arc-shaped groove 9 and the outer arc-shaped groove 12 are both rectangular.
The comparison test block is formed by processing a forging, and a middle pipe section 2 and a first calibration section 1 and a second calibration section 3 at two ends are free of connecting welding seams; the arc surface 4 is used for calibrating the wedge block delay, the front edge size and the angle gain supplement; a first through hole 5 for calibrating the sensitivity of odd-numbered (e.g., first and third) order waves; the second through hole 6 can be used for wedge block time delay calibration of different detection equipment; the first long through hole 7 is used for calibrating the sensitivity of even-numbered waves (such as second and fourth waves), the second long through hole 8 is used for calibrating and setting the detection sensitivity of a small-diameter pipe fillet weld reinforcement high area, the position of the first long through hole is set according to the designed weld height and weld width of a fillet weld of a workpiece to be detected, and the arc-shaped groove 9 is used for simulating the opening defect of the inner wall weld;
the middle pipe section 2 is used for simulating a workpiece to be detected, the ratio (R/R) of the outer diameter, the wall thickness and the inner diameter of the middle pipe section is similar to that of the workpiece to be detected so as to simulate the reflection influence of the inner wall and the outer wall of the pipe on the sound beam propagation process, the first blind hole 10 and the second blind hole 11 of the outer circle and the inner hole of the middle pipe section are used for simulating the harmful point-like defects and guiding the scanning sensitivity setting of the detection process, and the outer arc-shaped groove 12 of the middle pipe section is used for;
when the small-diameter tube phased array ultrasonic testing reference block is used for testing, as shown in fig. 8, a phased array probe 13 is placed on the arc surface of the first checking section 1 and moves back and forth by aiming at the arc surface 4 of the first checking section to calibrate the front edge size, the angle gain compensation and the wedge block delay of the phased array probe; for butt weld detection, a phase control array probe 13 is placed on the excircle of the middle pipe section 2 adjacent to the first through hole 5, the probe is moved back and forth, and the first through hole 5 is utilized to check the angles of sound beams of odd-numbered waves (such as first and third waves); the phased array probe 13 is placed on the excircle of the middle pipe section 2 adjacent to the first long through hole 7, the probe is moved back and forth, the first long through hole 7 is utilized to check the angles of sound beams of even-numbered waves (such as second and fourth waves), and DAC or TCG curves of the distance and echo amplitude relation are manufactured at two positions;
for fillet weld detection, a phase control array probe 13 is arranged on the excircle of the middle pipe section 2 adjacent to the first through hole 5, the probe is moved back and forth, and the first through hole 5 is utilized to check the angles of sound beams of odd-numbered waves (such as first and third waves); placing the phased array probe 13 on the excircle of the middle pipe section 2 adjacent to the first long through hole 7, moving the probe back and forth, and checking the angles of sound beams of even-numbered waves (such as second-order waves and fourth-order waves) by using the first long through hole 7; placing the phased array probe 13 on the excircle of the middle pipe section 2 adjacent to the second long through hole 8, moving the probe back and forth, and verifying the fillet weld by using the second long through hole 8 to strengthen each sound beam angle of even-numbered waves (such as secondary waves and quadric waves) in a high area; manufacturing a DAC or TCG curve of the relation between the distance and the echo amplitude at three positions;
simulation scanning for butt weld check confirmation: as shown in fig. 9, the outer circle of the middle pipe section 2 is confirmed by one-time symmetrical non-parallel scanning and two-time offset non-parallel scanning of the two phased array probes 13 and 14, the distances (S1 + S2) between the two probes in three scanning are the same and equal to the detection process requirement value, and the evaluation line is set to 40% -80% of the full screen as the preset scanning sensitivity; when scanning symmetrically and non-parallelly, the two phased array probes 13 and 14 are arranged symmetrically left and right relative to the machining simulated defect (i.e. S1= S2), i.e. the two phased array probes 13 and 14 are arranged symmetrically left and right relative to the two blind holes 10 and 11 and the section of outer arc-shaped groove 12, and then the two phased array probes 13 and 14 and the middle pipe section 2 are rotated relatively to scan for a circle according to a given detection process; the offset non-parallel scanning is divided into left and right two times, the distance between the two probes is kept unchanged (S1 + S2), the two phased array probes 13 and 14 are respectively synchronously offset to the left or the right by half of the width of a detection area, and then the scanning is rotated for one circle according to the established detection process; the defects of different positions of the left side, the middle side and the right side of the welding line can be detected;
simulation scanning for fillet weld verification and confirmation: confirming the excircle of the middle pipe section 2 through two non-parallel scanning of the phased array probe 13, and setting the evaluation line to be 40% -80% of full screen as preset scanning sensitivity; as shown in fig. 10, the phased array probe 13 is arranged on the excircle of the middle pipe section 2, the distance S3 from the second calibration section 3 is set as the distance from the detection process probe to the weld toe line on the connecting pipe side, the phased array probe 3 and the middle pipe section 2 rotate relatively to each other according to the set detection process to scan for one circle, and the first long through hole 7, the second long through hole 8 and the arc-shaped groove 9 are detected; arranging a phased array probe 13 on the outer circle of the middle pipe section 2, setting the distance S4 of the phased array probe deviating from machining simulation defects (namely a first blind hole 10, a second blind hole 11 and a section of outer arc-shaped groove 12) as the distance from the probe to the root of an angle weld in the detection process, scanning the phased array probe 13 and the middle pipe section 2 for one circle by rotation according to the established detection process, and detecting the first blind hole 10, the second blind hole 11 and the section of outer arc-shaped groove 12;
readjusting, checking and confirming the detection process according to the detection result; the product can be detected after the relevant requirements are needed; through the utility model, the influence of the reflection of the inner and outer walls on the defect signal in the actual detection is truly simulated, the consistency of the detection sensitivity of each reflected wave is ensured, and the accuracy and the reliability of the defect quantification are improved; the first blind hole 10 and the second blind hole 11 are arranged on the inner wall and the outer wall of the reference block to simulate the point defects and are used for setting the detection sensitivity of the point defects, so that the missing detection risk of damaging the point defects is reduced; the arc-shaped groove 9 and the outer arc-shaped groove 12, the first long through hole 7 and the second long through hole 8 are further processed on the inner wall and the outer wall, simulation scanning is carried out by adopting different offset distances, the correctness of the setting of the detection process can be verified, and the method is simple, reliable and practical.
Claims (4)
1. The utility model provides a path pipe phased array ultrasonic testing contrasts test block, first check-up section (1), second check-up section (3) including an organic whole associative middle part pipeline section (2) and both ends, first check-up section (1) is equipped with the same external diameter of middle part pipeline section (2) excircle face and coaxial at least partial cambered surface, tip at first check-up section (1) is equipped with arc radius and the same arc surface (4) of middle part pipeline section (2) external diameter, and the centre of a circle of arc surface (4) is located middle part pipeline section (2) excircle extension face, its characterized in that: a first through hole (5) is also arranged in the first checking section (1), and the axis of the first through hole (5) is positioned on the inner hole extension surface of the middle pipe section (2); a first long through hole (7), a second long through hole (8) and a checking hole communicated with the inner hole of the middle pipe section (2) are arranged in the second checking section (3), the axis of the first long through hole (7) is positioned on the excircle extension surface of the middle pipe section (2), and an arc-shaped groove (9) is arranged on the inner wall of the checking hole; the outer circle and the inner hole of the middle pipe section (2) are respectively provided with a first blind hole (10) and a second blind hole (11), and the outer circle of the middle pipe section (2) is also provided with a section of outer arc-shaped groove (12).
2. The small-diameter tube phased array ultrasonic testing reference block of claim 1, characterized in that: the first verification section (1) and the second verification section (3) are provided with two parallel side faces, and the first through hole (5), the first long through hole (7) and the second long through hole (8) are perpendicular to the two respective side faces.
3. The small-diameter tube phased array ultrasonic testing reference block according to claim 1 or 2, characterized in that: and a second through hole (6) is further arranged in the first checking section (1), and the second through hole (6) is axially positioned between the arc surface (4) and the first through hole (5).
4. The small-diameter tube phased array ultrasonic testing reference block of claim 3, characterized in that: the first blind hole (10), the second blind hole (11) and the section of the outer arc-shaped groove (12) of the middle pipe section (2) are all located on the same radial section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920396233.6U CN210155086U (en) | 2019-03-27 | 2019-03-27 | Small-diameter pipe phased array ultrasonic detection reference block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920396233.6U CN210155086U (en) | 2019-03-27 | 2019-03-27 | Small-diameter pipe phased array ultrasonic detection reference block |
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| Publication Number | Publication Date |
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| CN210155086U true CN210155086U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920396233.6U Withdrawn - After Issue CN210155086U (en) | 2019-03-27 | 2019-03-27 | Small-diameter pipe phased array ultrasonic detection reference block |
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- 2019-03-27 CN CN201920396233.6U patent/CN210155086U/en not_active Withdrawn - After Issue
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