CN104062362A - Ultrasonic lap weld detection composite probe - Google Patents
Ultrasonic lap weld detection composite probe Download PDFInfo
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- CN104062362A CN104062362A CN201310087511.7A CN201310087511A CN104062362A CN 104062362 A CN104062362 A CN 104062362A CN 201310087511 A CN201310087511 A CN 201310087511A CN 104062362 A CN104062362 A CN 104062362A
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- compressional wave
- wave normal
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- left socle
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Abstract
The invention provides an ultrasonic lap weld detection composite probe for oil and gas transportation steel pipelines. The composite probe is such structured that a left bracket (1) and a right bracket (2) are arranged in parallel, a bolt (25) and a nut (26) connect the left bracket (1) with the right bracket (2), the left bracket (1) is located below the right bracket (2), the left bracket (1) and the right bracket (2) respectively fix a second organic glass block (4) and a first organic glass block (2), the central parts of the second organic glass block (4) and the first organic glass block (3) respectively fix a second longitudinal wave normal probe (6), a third longitudinal wave normal probe (7) and a first longitudinal wave normal probe (5), and the second longitudinal wave normal probe (6), the third longitudinal wave normal probe (7) and the first longitudinal wave normal probe (5) are connected with a single-channel dual-function circuit. The ultrasonic lap weld detection composite probe has high detection accuracy and a high detection rate and meets requirements of fillet weld detection.
Description
Technical field
The present invention is a kind of lap weld Ultrasonic Detection coupling probe of oil transportation gas steel pipe lap weld Inner Defect Testing, relates to hyperacoustic measurement and piping system technical field.
Background technology
In field of non destructive testing, Ultrasonic Detection is widely used as the effective detection mode of one.Ultrasonic detecting technology is one of conventional Dynamic Non-Destruction Measurement, have that penetration capacity is strong, the advantage such as accurate positioning and sensitivity height, particularly it can realize the technical advantage that size to metal construction inherent vice and depth location are accurately measured, can butt welded seam underbead crack, the defect such as incomplete fusion, lack of penetration, slag inclusion and pore detects.The special welding line ultrasonic detecting instrument of domestic petroleum industry is a lot of at present, but limit by steel pipe lap weld self-condition, the detection of pipeline lap weld inherent vice does not also have suitable method, existing specification is not also made comprehensive regulation to the grade estimation of pipeline lap weld, and especially Ultrasonic Detection is also in space state.
Owing to lacking scientific and effective detection means, oil transportation vapour steel pipe lap weld only adopted magnetic detection mode to detect under specific circumstances in the past.Magnetic detects can only find face of weld and near surface flaw, and cannot detect the crackle, incomplete fusion of weld seam inside, lack of penetration and slag inclusion etc. has the defect of larger harm.When existing Ultrasonic Detection mode directly applies to the detection of oil transportation gas steel pipe lap weld, limit by welding line structure, pulse echo method or the independent use of transmission transmission method all cannot meet the requirement of accuracy of detection and verification and measurement ratio.
CN2577281Y discloses a kind of ultrasonic-wave flaw-detecting probe with coupled monitoring, but its accuracy of detection and recall rate are unsatisfactory.
Summary of the invention
Object of the present invention is invented a kind of higher accuracy of detection and recall rate, is met the lap weld Ultrasonic Detection coupling probe of fillet weld testing requirement.
A kind of coupling probe for oil transportation gas steel pipe lap weld Ultrasonic Detection, as depicted in figs. 1 and 2, comprise left socle 1, right support 2, the first plexiglass block 3, the second plexiglass block 4, the first compressional wave normal probe 5, the second compressional wave normal probe 6, the 3rd compressional wave normal probe 7 and function conversion circuit 29.
Left socle 1 be arranged in parallel with right support 2, with nut 26, left socle 1 is connected with right support 2, and left socle 1 is positioned at the below of right support 2 by bolt 25; Left socle 1 and each the second plexiglass block 4 and the first plexiglass block 3 fixed of right support 2, fix respectively the second compressional wave normal probe 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 at the second plexiglass block 4 and the first plexiglass block 3 middle parts; The second compressional wave normal probe 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 connection function change-over circuits 29.
Wherein:
Left socle 1 is inverted " Π " shape, and its two leg has the first translot 17 and the second translot 18, and the first bolt hole 19 and the first tapped pin-and-hole 20 are arranged at top;
Right support 2 is inverted " Π " shape, its two leg has the 3rd translot 21 and the 4th translot 22, the second bolt hole 23 and the second tapped pin-and-hole 24 are arranged at top, and the position of the second bolt hole 23 on right support 2 and the second tapped pin-and-hole 24 is corresponding with the position of the first bolt hole 19 on left socle 1 and the first tapped pin-and-hole 20 respectively;
The first plexiglass block 3 is right-angle triangle, and it is 37 ° ± 1 ° that there is the first domatic inclination angle of 8, the first domatic 8 upper end, has the center line of the first probe insertion 9, the first probe insertions 9 perpendicular to first domatic 8 at the first domatic 8 middle parts; On the front end face of the first plexiglass block 3, there is thread jack 13, on rear end face, have thread jack 14; Front end face thread jack 13 is fixedly connected with right support 2 by screw respectively with rear end face thread jack 14; Screw is through the 3rd translot 21 and the 4th translot 22 of right support 2 rear and front end faces, and the horizontal level of screw can carry out Level tune as required in translot;
The second plexiglass block 4 is right-angle triangle, upper end has second domatic 10, second domatic 10 inclination angle is 37 ° ± 1 °, on second domatic 10, there is respectively the center line of the second probe insertion 11 and the 3rd probe insertion 12, the second probe insertions 11 and the 3rd probe insertion 12 perpendicular to second domatic 10; On the front end face of the second plexiglass block 4, there is thread jack 15, on rear end face, have thread jack 16; The front end face thread jack 15 of the second plexiglass block 4 is fixedly connected with left socle 1 by screw respectively with rear end face thread jack 16; Screw is through the first translot 17 and second translot 18 of right support 2 rear and front end faces, and the horizontal level of screw can carry out Level tune as required in translot;
The probe socket of the first compressional wave normal probe 5 is threaded with the first probe insertion 9 with screw thread, and the probe socket of the second compressional wave normal probe 6 and the 3rd compressional wave normal probe 7 is threaded with the second probe insertion 11 and the 3rd probe insertion 12 respectively;
Left socle 1 be arranged in parallel with right support 2, and left socle is positioned at the below of right support; Bolt 25 is successively through the first bolt hole 19 and the second bolt hole 23, and revolves and establish nut 26, and left socle 1 and right support 2 are located, and on bolt 25, on the position between left socle 1 and right support 2, support spring 27 is housed; The second tapped pin-and-hole 24 inward turnings on the first tapped pin-and-hole 20 on left socle and right support are established threaded fixed pin 28;
The acoustic beam angle of the wave beam that the first compressional wave normal probe 5, the second compressional wave normal probe 6 and the 3rd compressional wave normal probe 7 are launched after corresponding plexiglass block refraction is 45 degree;
The compressional wave that the first compressional wave normal probe 5 and the 3rd compressional wave normal probe 7 are launched enters organic glass and visits that in workpiece, to be converted into angle after piece refraction be that the shear wave of 45 ° detects pipeline fillet weld, the second compressional wave normal probe 6 is under the effect of single channel dual-function circuit, the wave beam that can only receive the first normal probe transmitting, itself does not launch ultrasound wave, the first compressional wave normal probe 5 and the 3rd compressional wave normal probe 7 all can detect with pulse echo method, the second compressional wave normal probe 6 can receive the ultrasound wave that the first compressional wave normal probe 5 is launched, can form one the one a pair of probe of receiving with the first compressional wave normal probe 5, pipeline fillet weld is carried out to the detection of transmission transmission method, the ultrasound wave of three compressional wave normal probe transmittings in the present invention is through the refraction of plexiglass block and the conversion of the function of single channel dual-function circuit, can realize 3 passages at two passages, two kinds are detected scanning mode and detect simultaneously, the testing result that 3 probes receive can corroborate each other, guarantee obtains higher accuracy of detection and recall rate.
The first plexiglass block 3 and the second plexiglass block 4 design according to tested fillet weld both sides tube wall thickness, fillet weld seam form, fillet weld size and face of weld inclination angle size.Can both realize the comprehensive covering to soldered for the wave beam of realizing each probe transmitting, ultrasound wave incident angle is 37 °, and the ultrasonic transmission angle after plexiglass block refraction is 45 °.
Compressional wave normal probe adds that the principle that produces shear wave after certain angle voussoir is known technology.
Advantage of the present invention is simple in structure, easy to use, work when pulse return pattern and transmission transmission mode have been realized in a passage the inside therein, using 3 probe one-time detection can complete 2 channel pulse echoes detections detects with the transmission transmission of 1 passage, detection faces can realize comprehensive covering of butt welded seam inside and fusion area, weld seam both sides, pulse echo method can butt welded seam inside and accurate quantification and the location of the defect of fusion area, transmission transmission method can carry out defect examination fast by butt welded seam, two kinds of detection mode testing results can be confirmed mutually, higher accuracy of detection and recall rate are ensured, can meet the requirement that fillet weld detects.
Brief description of the drawings
Fig. 1 is lap weld Ultrasonic Detection coupling probe front elevation
Fig. 2 is lap weld Ultrasonic Detection coupling probe side view
Fig. 3 is the front elevation of translot 17,18,21,22
Fig. 4 is the coverage diagram of the acoustic beam butt welded seam of probe
Wherein 1-left socle, 2-right support
3-the first plexiglass block the 4-the second plexiglass block
5-the first compressional wave normal probe the 6-the second compressional wave normal probe
The 7-the three compressional wave normal probe 8-the first is domatic
The 9-the first probe insertion 10-the second is domatic
11-the second probe insertion the 12-the three probe insertion
13-the first thread jack the 14-the second thread jack
15-the three thread jack the 16-the four thread jack
17-the first translot the 18-the second translot
The tapped pin-and-hole of the 19-the first bolt hole 20-the first
21-the three translot the 22-the four translot
The tapped pin-and-hole of the 23-the second bolt hole 24-the second
25-bolt, 26-nut
27-support spring, 28-fixed pin
29-function conversion circuit the 30-the first nut
31-the second nut the 32-the three nut
The 33-the four nut
Embodiment
Embodiment. this example is an experimental prototype, repair 8mm wall thickness oil pipeline as example taking 12mm thickness sleeve, it forms as depicted in figs. 1 and 2, comprises left socle 1, right support 2, the first plexiglass block 3, the second plexiglass block 4, the first compressional wave normal probe 5, the second compressional wave normal probe 6, the 3rd compressional wave normal probe 7 and function conversion circuit 29.
Left socle 1 be arranged in parallel with right support 2, with nut 26, left socle 1 is connected with right support 2, and left socle 1 is positioned at the below of right support 2 by bolt 25; Left socle 1 and each the second plexiglass block 4 and the first plexiglass block 3 fixed of right support 2, fix respectively the second compressional wave normal probe 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 at the second plexiglass block 4 and the first plexiglass block 3 middle parts; The second compressional wave normal probe 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 connection function change-over circuits 29.
In steel pipe lap weld both sides, groove length is substantially equal, and section is isosceles right triangle, and triangle waist is long is 12mm, and in order to allow the acoustic beam of probe transmitting at utmost realize the covering of butt welded seam, selection emission angle is the angle probe of 45 °; According to the refraction of ripple and waveform transformation principle, the velocity of propagation of known ultrasound wave in steel (shear wave) and organic glass (compressional wave) is respectively 3230m/s and 2720m/s, obtain refraction angle and be the shear wave of 45 °, calculating incident compressional angle is 36.5 °, can calculate wafer length L is 9.65mm, and the wafer of therefore can selecting to pop one's head in is the circular wafer of diameter phi 10mm.Frequency probe is 5MHz, and the specification that obtains thus popping one's head in is 5M φ 10A45.
Determine the size of voussoir according to detection case: the high 20mm of the wide 30mm of long 35mm, as Fig. 2;
Shelf size: the wide 30mm in inner side.
The acoustic beam of probe covers according to the butt welded seam of mode shown in Fig. 4.
This example is through test, work when pulse return pattern and transmission transmission mode have been realized in a passage the inside therein, using 3 probe one-time detection can complete 2 channel pulse echoes detections detects with the transmission transmission of 1 passage, detection faces can realize comprehensive covering of butt welded seam inside and fusion area, weld seam both sides, pulse echo method can butt welded seam inside and accurate quantification and the location of the defect of fusion area, transmission transmission method can carry out defect examination fast by butt welded seam, two kinds of detection mode testing results can be confirmed mutually, higher accuracy of detection and recall rate are ensured, can meet the requirement that fillet weld detects.And simple in structure, easy to use.
Claims (7)
1. a lap weld Ultrasonic Detection coupling probe, is characterized in that it comprises left socle (1), right support (2), the first plexiglass block (3), the second plexiglass block (4), the first compressional wave normal probe (5), the second compressional wave normal probe (6), the 3rd compressional wave normal probe (7) and function conversion circuit (29);
Left socle (1) be arranged in parallel with right support (2), with nut (26), left socle (1) is connected with right support (2), and left socle (1) is positioned at the below of right support (2) by bolt (25); Left socle (1) and each the second plexiglass block (4) and the first plexiglass block (3) fixed of right support (2), fix respectively the second compressional wave normal probe (6), the 3rd compressional wave normal probe (7) and the first compressional wave normal probe (5) at the second plexiglass block (4) and the first plexiglass block (3) middle part; The second compressional wave normal probe (6), the 3rd compressional wave normal probe (7) and the first compressional wave normal probe (5) connection function change-over circuit (29).
2. a kind of lap weld Ultrasonic Detection coupling probe according to claim 1, it is characterized in that described left socle (1) is for inverted " Π " shape, its two leg has the first translot (17) and the second translot (18), and the first bolt hole (19) and the first tapped pin-and-hole (20) are arranged at top.
3. a kind of lap weld Ultrasonic Detection coupling probe according to claim 1, it is characterized in that described right support (2) is for inverted " Π " shape, its two leg has the 3rd translot (21) and the 4th translot (22), the second bolt hole (23) and the second tapped pin-and-hole (24) are arranged at top, and the position of the second bolt hole (23) on right support (2) and the second tapped pin-and-hole (24) is corresponding with the position of the first bolt hole (19) on left socle (1) and the first tapped pin-and-hole (20) respectively.
4. a kind of lap weld Ultrasonic Detection coupling probe according to claim 1, it is characterized in that described the first plexiglass block (3) is right-angle triangle, there are first domatic (8) upper end, the inclination angle of first domatic (8) is 37 ° ± 1 °, have the first probe insertion (9) at first domatic (8) middle part, the center line of the first probe insertion (9) is perpendicular to first domatic (8); On the front end face of the first plexiglass block (3), there is thread jack (13), on rear end face, have thread jack (14); Front end face thread jack (13) is fixedly connected with right support (2) by screw respectively with rear end face thread jack (14); Screw is through the 3rd translot (21) and the 4th translot (22) of right support (2) rear and front end face, and the horizontal level of screw can carry out Level tune as required in translot.
5. a kind of lap weld Ultrasonic Detection coupling probe according to claim 1, it is characterized in that described the second plexiglass block (4) is right-angle triangle, there are second domatic (10) upper end, the inclination angle of second domatic (10) is 37 ° ± 1 °, on second domatic (10), have respectively the second probe insertion (11) and the 3rd probe insertion (12), the center line of the second probe insertion (11) and the 3rd probe insertion (12) is perpendicular to second domatic (10); On the front end face of the second plexiglass block (4), there is thread jack (15), on rear end face, have thread jack (16); The front end face thread jack (15) of the second plexiglass block (4) is fixedly connected with left socle (1) by screw respectively with rear end face thread jack (16); Screw is through the first translot (17) and second translot (18) of right support (2) rear and front end face, and the horizontal level of screw can carry out Level tune as required in translot.
6. a kind of lap weld Ultrasonic Detection coupling probe according to claim 1, the probe socket that it is characterized in that described the first compressional wave normal probe (5) is threaded with the first probe insertion (9) with screw thread, and the probe socket of the second compressional wave normal probe (6) and the 3rd compressional wave normal probe (7) is threaded with the second probe insertion (11) and the 3rd probe insertion (12) respectively;
Left socle (1) be arranged in parallel with right support (2), and left socle (1) is positioned at the below of right support (2); Bolt (25) is successively through the first bolt hole (19) and the second bolt hole (23), and revolve and establish nut (26), make left socle (1) and right support (2) location, on bolt (25), be positioned on the position between left socle (1) and right support (2) support spring (27) is housed; The second tapped pin-and-hole (24) inward turning on the first tapped pin-and-hole (20) on left socle (1) and right support (2) is established threaded fixed pin (28).
7. a kind of lap weld Ultrasonic Detection coupling probe according to claim 6, the acoustic beam angle of the wave beam that it is characterized in that described the first compressional wave normal probe (5), the second compressional wave normal probe (6) and the transmitting of the 3rd compressional wave normal probe (7) after corresponding plexiglass block refraction is 45 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310087511.7A CN104062362B (en) | 2013-03-19 | 2013-03-19 | A kind of lap weld ultrasound detection coupling probe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087511.7A CN104062362B (en) | 2013-03-19 | 2013-03-19 | A kind of lap weld ultrasound detection coupling probe |
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| CN104062362A true CN104062362A (en) | 2014-09-24 |
| CN104062362B CN104062362B (en) | 2016-06-08 |
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| CN201310087511.7A Active CN104062362B (en) | 2013-03-19 | 2013-03-19 | A kind of lap weld ultrasound detection coupling probe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021142A (en) * | 2015-07-15 | 2015-11-04 | 中国科学院金属研究所 | Measuring method of laser lap joint welding seam width and device used by method |
| CN107144636A (en) * | 2017-05-18 | 2017-09-08 | 成都跟驰科技有限公司 | Configure the Ultrasonic wave industrial detector of a variety of probes |
| CN110834150A (en) * | 2019-12-02 | 2020-02-25 | 中车长春轨道客车股份有限公司 | Laser-arc hybrid welding ultrasonic detection process for thick plates of bogies |
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| CN105021142A (en) * | 2015-07-15 | 2015-11-04 | 中国科学院金属研究所 | Measuring method of laser lap joint welding seam width and device used by method |
| CN105021142B (en) * | 2015-07-15 | 2017-09-29 | 中国科学院金属研究所 | The measuring method and equipment therefor of a kind of laser lap weld width |
| CN107144636A (en) * | 2017-05-18 | 2017-09-08 | 成都跟驰科技有限公司 | Configure the Ultrasonic wave industrial detector of a variety of probes |
| CN110834150A (en) * | 2019-12-02 | 2020-02-25 | 中车长春轨道客车股份有限公司 | Laser-arc hybrid welding ultrasonic detection process for thick plates of bogies |
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|---|---|
| CN104062362B (en) | 2016-06-08 |
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Effective date of registration: 20211110 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co., Ltd Address before: 100007 China Petroleum Building, No. 9, Dongzhimen North Street, Dongcheng District, Beijing Patentee before: China National Petroleum Corporation |