CN109100427A - A kind of detection test block of small diameter tube Nozzle weld phased array and its application method - Google Patents
A kind of detection test block of small diameter tube Nozzle weld phased array and its application method Download PDFInfo
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- CN109100427A CN109100427A CN201811033068.4A CN201811033068A CN109100427A CN 109100427 A CN109100427 A CN 109100427A CN 201811033068 A CN201811033068 A CN 201811033068A CN 109100427 A CN109100427 A CN 109100427A
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- 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
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
Abstract
The present invention relates to ultrasonic detecting technologies, and in particular to a kind of detection test block of small diameter tube Nozzle weld phased array and its application method.The test block includes coding debugging block, left DAC verifying block, right DAC verifying block, angle gain correction block and near field region Defect Comparison block；The left DAC verifying block and right DAC verifying block are a part intercepted at the welded corner joint of path tube socket, the left and right DAC verifying block is symmetrical arranged and the upper end is connect with coding debugging block, the lower end of the left DAC verifying block and angle gain correction block right end weld to obtain left comer weld seam, and the lower end of the right DAC verifying block and the left end of near field region Defect Comparison block weld to obtain right corner weld seam；Several reflectors are equipped on the left DAC verifying block, right DAC verifying block and near field region Defect Comparison block.
Description
Technical field
The present invention relates to ultrasonic detecting technologies, and in particular to a kind of detection test block of small diameter tube Nozzle weld phased array and its
Application method.
Background technique
Structure is complicated for Nozzle weld, and welding condition is severe, be easy to appear in the welding process stomata, slag inclusion, it is lack of penetration,
The defects of incomplete fusion and crackle；It is easy unbalance stress in the process of running, generates stress and concentrates.Therefore it is examined in station boiler
In, Nozzle weld is that position is examined and monitored to common failure site and emphasis.
Phased array detection technique is applied to multiple chips by the specific rule that focuses using electronic control mode, to realize sound
The deflection of beam focuses, and carries out real time imagery to defect, to determine that the shape of defect, size and Orientation are provided than individually visiting
The stronger detectability of head system.Therefore phased array ultrasonic detection is as a leading edge detection technology, in the inspection of Nozzle weld
Survey field is more and more widely used.But before carrying out phased array detection, need each to instrument, probe using test block
From performance and combined system performance calibration, therefore test block is very important tool in phased array detection, directly affects detection knot
The precision of fruit.
Angle gain amendment is carried out frequently with R50 R100 semicircle test block at present；Directly adopt conventional ultrasound use
DL-1 GS test block carry out sensitivity curve production, frequently with self-control welding defect sample carry out process certification test.
Existing standard does not form a set of phased array Special test block system, directly conventional ultrasound is used to try there are also some test blocks
Block directly affects the accuracy of phased array testing result.
Prior art disadvantage:
(1), it is not specified by the test block determined dedicated for small diameter tube detection sensitivity in existing domestic standard, typically now exists
Sensitivity is adjusted in DL-1 GS test block, is tested to obtain sensitive write music using horizontal through-hole of the direct wave to different depth
Line, and the overwhelming majority uses primary reflection to detect in fillet weld detection, therefore the echo with actual defects in fillet weld
Feature has differences, especially obvious in the thin-wall tube detection of 4~8mm thickness.
(2), phased array supersonic wave beam range is big, and sound field characteristics are complicated, the acoustic pressure feature of each point and theory within the scope of sound field
There is also differences for value, so needing to carry out process certification before detection, confirm to acoustic beam covering and sensitivity, to guarantee defect
Not missing inspection.Currently used simulating test pieces reflector type is single, and structure type has differences with true Nozzle weld,
Applicability is not strong.
(3), it needs to carry out angle gain amendment before the detection of phased array instrument, be carried out at present using the reference block of R50 semicircle
Test.The probe contacts face of the test block is plane, needs first to replace Flachkeil block, gains corresponding curved surface voussoir after the completion of tuning up again
It is detected, it is cumbersome, and can have an adverse effect after replacing curved surface voussoir to the instrument parameter corrected.
(4), phased array ultrasonic detecting method and conventional Ultrasound detection equally have near field region, and the acoustic pressure distribution of near field region is
Non-uniform, instrument tends not to the reflection energy feature of accurately display defect when the region existing defects, especially to path
The detection of thin-wall pipe welding connector is very unfavorable.
(5), scanning frame encoder requires to be calibrated daily, and it is certain long that when calibration winds measurement with tape on pipeline
Degree is used as measuring basis, and when operation is more troublesome, and tape is easy to produce sliding and causes measurement inaccurate, influences detection data.
(6), angle gain amendment, sensitivity curve production, process certification are required to carry out in different test blocks, need standby
Neat various test blocks, scene are inconvenient to carry.
Summary of the invention
To solve the above-mentioned problems, it detects and uses dedicated for small diameter tube Nozzle weld phased array the present invention provides one kind
Calibration block, it is reasonable in design, multiple functional, easy to carry, solve conventional test block angle gain amendment, it is sensitive
The problem of degree curve plotting and process certification test aspect differ greatly with actually detected situation, improves defects detection precision.
The technical solution adopted by the invention is as follows:
A kind of small diameter tube Nozzle weld phased array detection test block, including coding debugging block, left DAC verifying block, right DAC verifying
Block, angle gain correction block and near field region Defect Comparison block；The left DAC verifying block and right DAC verifying block are path tube socket
The a part intercepted at welded corner joint,
The left and right DAC verifying block is symmetrical arranged and the upper end is connect with coding debugging block, under the left DAC verifying block
It welds to obtain left comer weld seam, the lower end of the right DAC verifying block and near field region Defect Comparison with angle gain correction block right end in end
It welds to obtain right corner weld seam in the left end of block；
Several reflectors are equipped on the left DAC verifying block, right DAC verifying block and near field region Defect Comparison block.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the reflector on the left DAC verifying block includes No.1
Horizontal through-hole, No.1 indulge through-hole and section is No. four rectangular channels of rectangle；
The horizontal through-hole of No.1 is located at the left verifying block top DAC and crosses DAC verifying block；
The No.1 indulges through-hole and is located at the right side of left comer weld seam and passes through left comer weld seam, is in spatial vertical with the horizontal through-hole of No.1；
No. four rectangular channels are arranged along the outer circle circumferential direction of left comer weld seam.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the reflector on the right DAC verifying block includes No.1
Rectangular channel, No. two rectangular channels, No. three rectangular channels and No. two vertical through-holes；
The No.1 rectangular channel, No. two rectangular channels and No. three rectangular channels along right DAC verifying block inner wall circumferencial direction setting and
In upper and lower arrangement；
No. two vertical through-holes are located at the downside of right corner weld seam and pass through right corner weld seam, parallel with the vertical through-hole of No.1.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the right side of the near field region Defect Comparison block is comparison inspection
Deviational survey face is right detection faces above；
Reflector on the contrasting detection inclined-plane includes the No.1 of equidistant placement to No. four comparison holes, the No.1 to No. four it is right
It is more parallel to each other than the axis in hole and be each perpendicular to inclined-plane and extend internally.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the right detection faces are arc surface and its curvature and path
Pipe coincide, and the inclined-plane is 55 ° with the angle than plane where detection faces.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, the left side of the left DAC verifying block be amendment detection faces,
Above be left detection faces, the amendment detection faces be arc surface and its be radius 50mm, the left detection faces for arc surface and its
Curvature and small diameter tube coincide.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the horizontal through-hole of the No.1, No.1 indulges through-hole and No. two vertical
The diameter of through-hole is 2mm, and the No.1 is indulged through-hole and is located at the 1/3 of the vertical height of left comer weld seam right edge, and described No. two vertical
Through-hole is located at the 1/3 of right corner weld seam lower side lateral length；
The diameter that the No.1 compares hole to No. four is 2mm, the No.1 to No. four respective ends in comparison hole and right detection
Vertical range between face is gradually incremental arithmetic progression.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, between the end and right detection faces in No.1 comparison hole
Vertical range be 2mm, it is described No. two comparison hole ends and right detection faces between vertical range be 4mm, described No. three are right
Than the vertical range between the end in hole and right detection faces be 6mm, it is described No. four comparison hole and end and right detection faces between
Vertical range be 8mm.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the outer wall of the coding debugging block is equipped with scale；
The open height of No. four rectangular channels is 1mm, depth 2mm,
The open height of the No.1 rectangular channel is 1mm, depth 1mm,
The open height of No. two rectangular channels is 1mm, depth 3mm,
The open height of No. three rectangular channels is 1mm, depth 2mm, and the horizontal position of No. three rectangular channels corresponds to the right side
The lower side of fillet weld.
The application method of above-mentioned small diameter tube Nozzle weld phased array detection test block, including following content:
1) encoder calibration is debugged: the scanning frame with encoder being mounted on small diameter tube pipeline section, scanning frame is rotated, makes to encode
For device according to the scale display walking certain length of coding debugging block, then adjusting detecting instrument parameter makes its show value and encoder
The distance actually passed by is consistent, completes the calibration of encoder；
2) make DAC (sensitivity) curve: by probe placement on left DAC verifying block, probe distal end is directed at No.1 and indulges through-hole, comes
It returns mobile probe and finds the highest wave position that the reflector No.1 indulges through-hole, detecting instrument records the location point information；Then will
For probe placement on right DAC verifying block, probe distal end is directed at No. two vertical through-holes, move back and forth probe find the reflector two it is vertical
The highest wave position of through-hole, detecting instrument record the location point information；Two o'clock line generates sensitivity curve later；
3) Nozzle weld process certification: by probe placement on the tube wall of left DAC verifying block, probe distal end is directed at left comer downward
Whether weld seam, observation detecting instrument screen can clearly show that No.1 indulges the echo of through-hole and No. four rectangular channels；Then turn again
It moves on on the tube wall of right DAC verifying block, whether observation detecting instrument screen can clearly show that No. three rectangular channels and No. two vertical through-holes
Reflectogram；Illustrate that this Nozzle weld technique is qualified if it can clearly show；
4) the angle gain amendment of detecting instrument: phased array probe is placed in the left detection faces of angle gain correction block and makes to visit
Head front end alignment amendment detection faces, are then moved forward and backward probe and carry out gain-boosted op amp so that each angle to each required angle acoustic beam one by one
Degree acoustic beam meets testing requirements；
5) near field region Defect Comparison: phased array probe is placed in the right detection faces of near field region Defect Comparison block, probe distal end
Towards contrasting detection inclined-plane, it is moved forward and backward the reflectance signature that probe measurement No.1 compares hole to No. four, stores the data to detection
In instrument；The reflectance signature that defect and No.1 near field region discovery compare hole to No. four carries out comparing, calculates defect
Actual buried depth.
The invention has the benefit that
1, the present invention has rational design, function is more, easy to use.This test block is only needed under conditions of guaranteeing that instrument and equipment is qualified
Complete the adjustment to phased array instrument；Strong applicability, emplacement type, plug-in type Nozzle weld are applicable in.
2, present invention improves conventional test blocks in terms of angle gain amendment, sensitivity curve production and process certification test
The case where differing greatly with actually detected situation.
3, the rectangular channel of one group of different depth of present invention setting, substantially increases the measurement accuracy to incomplete penetration defect.
4, the present invention provides a kind of reflectors near field region stomata class Defect Comparison, and form is arranged, and improves the region
Defects detection precision.
5, present invention optimizes semicircle test block, the face of will test is changed to arc surface, and the process for eliminating frequently replacement voussoir mentions
High angle gain corrects precision.
6, graduated scale is processed test block end by the present invention, and the process for eliminating tape binding measurement improves encoder
Calibration accuracy.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the embodiment of the present invention；
Fig. 2 is another view stereo schematic diagram of the embodiment of the present invention；
Fig. 3 is the schematic front view of the embodiment of the present invention；
Fig. 4 is the partial schematic diagram of the embodiment of the present invention；
Fig. 5 is the left view schematic diagram of the embodiment of the present invention；
Fig. 6 is the right side view of the embodiment of the present invention；
Fig. 7 is the schematic top plan view of the embodiment of the present invention.
In figure: 1 being coding debugging block, 2 be left DAC verifying block, 3 be right DAC verifying block, 4 be angle gain correction block, 5
For near field region Defect Comparison block,
21 be the horizontal through-hole of No.1,22 be No.1 indulge through-hole, 23 be No. four rectangular channels, 31 be No.1 rectangular channel, 32 be No. two rectangles
Slot, 33 for No. three rectangular channels, 34 No. two vertical through-holes, 41 be amendment detection faces, 42 be left detection faces, 51 be No.1 compare hole, 52
It is No. three comparison holes for No. two comparison holes, 53,54 be No. four comparison holes, 55 is right detection faces.
Specific embodiment
The present invention is further explained with reference to the accompanying drawing.
A kind of small diameter tube Nozzle weld phased array detection test block, including coding debugging block 1, left DAC verify block 2, right DAC
Verify block 3, angle gain correction block 4 and near field region Defect Comparison block 5；The left DAC verifying block 2 and right DAC verifying block 3 are small
The a part intercepted at diameter tube socket welded corner joint, coding debugging 1 height of block is 50mm in the present embodiment；
The height of the left and right DAC verifying block 2,3 is 80mm, and the left and right DAC verifying block 2,3 is symmetrical arranged and the upper end is equal
It is connect with coding debugging block 1, the lower end of the left DAC verifying block 2 and 4 right end of angle gain correction block weld to obtain left comer weldering
Seam, the lower end of the right DAC verifying block 3 and the left end of near field region Defect Comparison block 5 weld to obtain right corner weld seam；
Several reflectors are equipped on the left DAC verifying block 2, right DAC verifying block 3 and near field region Defect Comparison block 5.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the reflector on the left DAC verifying block 2 includes No.1
Horizontal through-hole 21, No.1 indulge through-hole 22 and section is No. four rectangular channels 23 of rectangle；
The horizontal through-hole 21 of No.1 is located at left verifying 2 top of block DAC and crosses DAC verifying block 2；
The No.1 indulges through-hole 22 and is located at the right side of left comer weld seam and passes through left comer weld seam, hangs down with the horizontal through-hole 21 of No.1 in space
Directly；
No. four rectangular channels 23 are arranged along the outer circle circumferential direction of left comer weld seam.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the reflector on the right DAC verifying block 3 includes No.1
The rectangular channel 33 of rectangular channel 32, three of rectangular channel 31, two and No. two vertical through-holes 34；
31, No. two rectangular channels 32 of the No.1 rectangular channel and No. three rectangular channels 33 are along the inner wall circumferencial direction of right DAC verifying block 3
It is arranged and in arrangement up and down；
No. two vertical through-holes 34 are located at the downside of right corner weld seam and pass through right corner weld seam, parallel with the vertical through-hole 22 of No.1.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the right side of the near field region Defect Comparison block 5 is comparison
It detects inclined-plane, be above right detection faces 55；
Reflector on the contrasting detection inclined-plane includes the No.1 of equidistant placement to No. four comparison holes 51,52,53,54, described
The axis that No.1 compares holes 51,52,53,54 to No. four is parallel to each other and is each perpendicular to inclined-plane and extends internally.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, the right detection faces 55 be arc surface and its curvature with it is small
Diameter pipe coincide, and the inclined-plane is 55 ° with the angle than 55 place plane of detection faces.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the left side of the left DAC verifying block 2 is amendment detection faces
41, above be left detection faces 42, the amendment detection faces 41 be arc surface and its be radius 50mm, the left detection faces 42 for justify
Cambered surface and its curvature and small diameter tube coincide.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the horizontal through-hole 21 of the No.1, No.1 indulge through-hole 22 and two
The diameter of number vertical through-hole 34 is 2mm；The horizontal through-hole 21 of No.1 and the vertical range of coding debugging 1 lower end surface of block are 30mm,
The No.1 is indulged through-hole 22 and is located at the 1/3 of the vertical height of left comer weld seam right edge, and No. two vertical through-holes 34 are located at right corner weldering
At stitch lower side lateral length 1/3；
The diameter that the No.1 compares holes 51,52,53,54 to No. four is 2mm, the No.1 to No. four comparison holes 51,52,
53, the vertical range between 54 respective ends and right detection faces 55 is gradually incremental arithmetic progression.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, the end in No.1 comparison hole 51 and right detection faces 55
Between vertical range be 2mm, it is described No. two comparison hole 52 ends and right detection faces 55 between vertical range be 4mm, institute
State No. three comparison hole 53 end and right detection faces 55 between vertical range be 6mm, it is described No. four comparison hole 54 and end
Vertical range between right detection faces 55 is 8mm.
Above-mentioned small diameter tube Nozzle weld phased array detects test block, and the outer wall of the coding debugging block 1 is equipped with scale；
The open height of No. four rectangular channels 23 is 1mm, depth 2mm,
The open height of the No.1 rectangular channel 31 is 1mm, depth 1mm, the vertical range with coding debugging 1 lower end surface of block
For 50mm；
The open height of No. two rectangular channels 32 is 1mm, depth 3mm, and the vertical range with No.1 rectangular channel 31 is
40mm；
The open height of No. three rectangular channels 33 is 1mm, depth 2mm, and the horizontal position of No. three rectangular channels 33 is corresponding
In right corner weld seam lower side i.e. No. three rectangular channel 33 and No. two rectangular channels 32 vertical range be 20mm.
The application method of above-mentioned test block includes following 1) -5) a content:
1) encoder calibration is debugged with coding debugging block 1: the scanning frame with encoder is mounted on small diameter tube pipeline section, is revolved
Turn scanning frame, makes encoder according to the scale display walking certain length of coding debugging block 1, then adjusting detecting instrument parameter makes
Its show value with encoder is practical pass by a distance from it is consistent, complete the calibration of encoder, convenient and efficient, calibration accuracy is high.
2) make DAC sensitivity curve: by probe placement on left DAC verifying block 2, probe distal end is directed at No.1 and indulges through-hole
22, move back and forth probe and find the highest wave position that the reflector No.1 indulges through-hole 22, detecting instrument records the location point information；
Then by probe placement on right DAC verifying block 3, probe distal end is directed at No. two vertical through-holes 34, moves back and forth probe and finds this instead
The highest wave position of beam two vertical through-holes 34, detecting instrument record the location point information；Two o'clock line generates sensitive later
It writes music line.
Phased array acoustic beam range is bigger than conventional Ultrasound acoustic beam range, and No.1 indulges through-hole 22 and No. two vertical through-holes 34 are provided separately
Avoid interfering with each other for reflector echo.And No.1 indulges through-hole 22 and the DAC with curvature is arranged in No. two vertical through-holes 34
It verifies on block 3, the sensitivity curve made improves detection accuracy closer to true detection situation.No.1 is indulged through-hole 22 and is set
It sets and closely pops one's head in side in left comer weld seam vertical direction, No. two vertical settings of through-holes 34 are far popped one's head in side in right corner weld seam horizontal direction, this two
Locate position respectively close at the sensitivity maximum of primary reflection and at minimum, therefore Nozzle weld phased array is examined
For survey, through-hole 22 is indulged with No.1 and No. two vertical through-holes 34 make sensitivity curve and can meet testing requirements, and compares DL-1
It is more efficient, more accurate with GS test block.
3) carry out process certification: by probe placement on the tube wall of left DAC verifying block 2, probe distal end is directed at left comer downward
Whether weld seam, observation detecting instrument screen can clearly show that No.1 indulges the echo of through-hole 22 and No. four rectangular channels 23；Then
It is then transferred on the tube wall of right DAC verifying block 3, whether observation detecting instrument screen can clearly show that No. three rectangular channels 33 and No. two
Vertical 34 reflectogram of through-hole；Illustrate that this Nozzle weld technique is qualified if it can clearly show.
The reflector of left DAC verifying block 2 and right DAC verifying block 3 is provided with multi-functional: not only due to phased array devices
It can be shown with waveform and there are also powerful image display functions, therefore No.1 is indulged through-hole 22 and No. two vertical through-holes 34 and be can be not only used for
The production of sensitivity curve can also verify the reasonability of characterization processes according to its image quality.No. three rectangular channels 33 are not weld
Saturating characterization, and being used in combination with No.1 rectangular channel 31 and No. two rectangular channels 32 can be to the lack of penetration depth of Nozzle weld
Measurement is compared, 31 depth 1mm of No.1 rectangular channel, No. three 33 depth 2mm of rectangular channel, No. two 32 depth 3mm of rectangular channel just form one
A depth sequence, can be compared by measured data, obtain the depth value of practical incomplete penetration defect.No. four rectangular channels 23 are unmelted
The characterization of conjunction, can be used for actual defects it is qualitative when reference.
4) angle gain amendment is carried out to detecting instrument: phased array probe is placed on to the left detection of angle gain correction block 4
On face 42 and make probe distal end alignment amendment detection faces 41, is then moved forward and backward probe and each required angle acoustic beam is increased one by one
Benefit amendment is so that each angle acoustic beam meets testing requirements.
Since left detection faces 42 are curved designs, the process that Flachkeil block and circular arc voussoir are replaced is eliminated in this way, and
And reduce calibration error, improve detection accuracy.
5) near field region Defect Comparison block 5: phased array probe is placed in right detection faces 55, and probe distal end is examined towards comparison
Deviational survey face is moved forward and backward the reflectance signature that probe measurement No.1 compares hole 51,52,53,54 to No. four, stores the data to detection
In instrument；The reflectance signature that defect and No.1 near field region discovery compare hole 51,52,53,54 to No. four carries out comparing,
Calculate the actual buried depth of defect.
Right detection faces 55 are that arc surface and its curvature and small diameter tube coincide, it is therefore intended that probe and test block coupling are good, mention
High measuring accuracy.Common small diameter tube self-focusing phased array probe centric angle is mostly 55 °, contrasting detection inclined-plane and right detection faces
55 at 55 ° of angles, and reflector No.1 to No. four comparison holes 51,52,53,54 is arranged perpendicular to contrasting detection inclined-plane, thus may be used
So that phased array beam axis compares the upper surface in hole 51,52,53,54 perpendicular to No.1 to No. four, for simulating true stomata
The reflectance signature of class defect.This kind comparison reflector and its arrangement form disclosed by the invention, improve near field region stomata class
The detection accuracy of defect.
This application discloses the structure type and design concept of a kind of novel test block, according to the practical specification of test object and
Welding form, referring to the processable corresponding Special test block out of present disclosure.In conjunction with attached drawing to the test block feature of the application
It is described with specific embodiment, but the limitation not to the application protection scope.One of ordinary skill in the art should be bright
It is white, on the basis of technical scheme, those skilled in the art do not need to make the creative labor can make it is various
Modification or deformation, still within the protection scope of the claim of this application.
Claims (10)
1. a kind of small diameter tube Nozzle weld phased array detects test block, it is characterised in that: tested including coding debugging block (1), left DAC
Demonstrate,prove block (2), right DAC verifying block (3), angle gain correction block (4) and near field region Defect Comparison block (5)；The left DAC verifies block
(2) and right DAC verifying block (3) is a part intercepted at the welded corner joint of path tube socket,
Left and right DAC verifying block (2,3) is symmetrical arranged and the upper end is connect with coding debugging block (1), and the left DAC is tested
The lower end and angle gain correction block (4) right end for demonstrate,proving block (2) weld to obtain left comer weld seam, the lower end of right DAC verifying block (3)
It welds to obtain right corner weld seam with the left end of near field region Defect Comparison block (5)；
Several reflectors are equipped on left DAC verifying block (2), right DAC verifying block (3) and near field region Defect Comparison block (5).
2. small diameter tube Nozzle weld phased array detects test block according to claim 1, it is characterised in that: the left DAC is tested
Reflector on card block (2) includes the horizontal through-hole of No.1 (21), No.1 indulges through-hole (22) and section is No. four rectangular channels of rectangle
(23)；
The horizontal through-hole of No.1 (21) is located at left verifying block (2) top DAC and crosses DAC verifying block (2)；
The No.1 indulges through-hole (22) and is located at the right side of left comer weld seam and passes through left comer weld seam, is in space with the horizontal through-hole of No.1 (21)
Vertically；
No. four rectangular channels (23) are arranged along the outer circle circumferential direction of left comer weld seam.
3. small diameter tube Nozzle weld phased array detects test block according to claim 2, it is characterised in that: the right DAC is tested
The reflector demonstrate,proved on block (3) includes No.1 rectangular channel (31), No. two rectangular channels (32), No. three rectangular channels (33) and No. two vertical through-holes
(34)；
The No.1 rectangular channel (31), No. two rectangular channels (32) and No. three rectangular channels (33) are along the inner wall of right DAC verifying block (3)
Circumferencial direction is arranged and in arrangement up and down；
No. two vertical through-holes (34) are located at the downside of right corner weld seam and pass through right corner weld seam, parallel with No.1 vertical through-hole (22).
4. small diameter tube Nozzle weld phased array detects test block according to claim 3, it is characterised in that: the near field region lacks
The right side for falling into comparison block (5) is contrasting detection inclined-plane, is above right detection faces (55)；
Reflector on the contrasting detection inclined-plane includes the No.1 of equidistant placement to No. four comparison holes (51,52,53,54), institute
It is parallel to each other and be each perpendicular to inclined-plane and extend internally to state axis that No.1 compares hole (51,52,53,54) to No. four.
5. small diameter tube Nozzle weld phased array detects test block according to claim 4, it is characterised in that: the right detection faces
(55) it coincide for arc surface and its curvature and small diameter tube, the inclined-plane is 55 ° with the angle than plane where detection faces (55).
6. small diameter tube Nozzle weld phased array detects test block according to claim 4, it is characterised in that: the left DAC is tested
The left side of card block (2) be amendment detection faces (41), above for left detection faces (42), the amendment detection faces (41) for arc surface and
It is radius 50mm, and the left detection faces (42) are that arc surface and its curvature and small diameter tube coincide.
7. small diameter tube Nozzle weld phased array detects test block according to claim 4, it is characterised in that: the No.1 is horizontal logical
It is 2mm that through-hole (22) and the diameter of No. two vertical through-holes (34) are indulged in hole (21), No.1, and the No.1 indulges through-hole (22) and is located at left comer
At the 1/3 of the vertical height of weld seam right edge, No. two vertical through-holes (34) are located at the 1/3 of right corner weld seam lower side lateral length
Place；
The diameter that the No.1 compares hole (51,52,53,54) to No. four is 2mm, the No.1 to No. four comparison holes (51,
52,53,54) vertical range respective end and right detection faces (55) between be gradually incremental arithmetic progression.
8. small diameter tube Nozzle weld phased array detects test block according to claim 7, it is characterised in that: the No.1 comparison
Vertical range between the end and right detection faces (55) in hole (51) is 2mm, the end of No. two comparisons hole (52) and right inspection
Vertical range between survey face (55) is 4mm, vertical between the end and right detection faces (55) of No. three comparisons hole (53)
Distance be 6mm, it is described No. four comparison hole (54) and end and right detection faces (55) between vertical range be 8mm.
9. small diameter tube Nozzle weld phased array detects test block according to claim 7, it is characterised in that: the coding debugging
The outer wall of block (1) is equipped with scale；
The open height of No. four rectangular channels (23) is 1mm, depth 2mm,
The open height of the No.1 rectangular channel (31) is 1mm, depth 1mm,
The open height of No. two rectangular channels (32) is 1mm, depth 3mm,
The open height of No. three rectangular channels (33) is 1mm, depth 2mm, the horizontal position of No. three rectangular channels (33)
Lower side corresponding to right corner weld seam.
10. a kind of application method of small diameter tube Nozzle weld phased array detection test block as claimed in claim 9, it is characterised in that
Including following content:
1) encoder calibration is debugged: the scanning frame with encoder being mounted on small diameter tube pipeline section, scanning frame is rotated, makes to encode
According to the scale display walking certain length of coding debugging block (1), then adjust detecting instrument parameter makes its show value and compiles device
The code practical distance passed by of device is consistent, completes the calibration of encoder；
2) make DAC (sensitivity) curve: by probe placement in left DAC verifying block (2), probe distal end is directed at No.1 and indulges through-hole
(22), move back and forth probe and find the highest wave position that the reflector No.1 indulges through-hole (22), detecting instrument records the location point
Information；Then by probe placement in right DAC verifying block (3), probe distal end is directed at No. two vertical through-holes (34), moves back and forth probe
The highest wave position of the vertical through-hole (34) of the reflector two is found, detecting instrument records the location point information；Two o'clock line later
Generate sensitivity curve；
3) Nozzle weld process certification: by probe placement on the tube wall of left DAC verifying block (2), probe distal end is aligned downward
Whether left comer weld seam, observation detecting instrument screen can clearly show that No.1 indulges the reflectogram of through-hole (22) and No. four rectangular channels (23)
Picture；Then it is then transferred on the tube wall of right DAC verifying block (3), whether observation detecting instrument screen can clearly show that No. three rectangles
Slot (33) and No. two vertical through-hole (34) reflectograms；Illustrate that this Nozzle weld technique is qualified if it can clearly show；
4) phased array probe the angle gain amendment of detecting instrument: is placed on to the left detection faces (42) of angle gain correction block (4)
It goes up and makes probe distal end alignment amendment detection faces (41), be then moved forward and backward probe and gain is carried out to each required angle acoustic beam one by one
Amendment is so that each angle acoustic beam meets testing requirements；
5) near field region Defect Comparison: phased array probe is placed in the right detection faces (55) of near field region Defect Comparison block (5), is visited
It is special to be moved forward and backward the reflection that probe measurement No.1 compares hole (51,52,53,54) to No. four towards contrasting detection inclined-plane for head front end
Sign, stores the data in detecting instrument；Defect and No.1 near field region discovery compare hole (51,52,53,54) to No. four
Reflectance signature carries out comparing, calculates the actual buried depth of defect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033068.4A CN109100427B (en) | 2018-09-05 | 2018-09-05 | Small-diameter tube base fillet weld phased array detection test block and use method thereof |
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| CN201811033068.4A CN109100427B (en) | 2018-09-05 | 2018-09-05 | Small-diameter tube base fillet weld phased array detection test block and use method thereof |
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| CN110672043B (en) * | 2019-10-17 | 2024-05-03 | 中船澄西船舶修造有限公司 | Welding leg gauge |
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Effective date of registration: 20220130 Address after: 250200 No. 1996 Century Avenue, Zhangqiu District, Jinan City, Shandong Province Patentee after: SHANDONG MECHANICAL ENGINEERING TESTING Co. Address before: 250102 building a2-6, Hangu Jinggu, 7000 Jingshi East Road, high tech Zone, Jinan City, Shandong Province Patentee before: POWERCHINA SEPCO1 ELECTRIC POWER CONSTRUCTION Co.,Ltd. Patentee before: SHANDONG MECHANICAL ENGINEERING TESTING Co. |
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Application publication date: 20181228 Assignee: JINING LUKE TESTING EQUIPMENT Co.,Ltd. Assignor: SHANDONG MECHANICAL ENGINEERING TESTING Co. Contract record no.: X2024980000855 Denomination of invention: A phased array detection test block for small diameter pipe seat corner welds and its usage method Granted publication date: 20201106 License type: Common License Record date: 20240116 |
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