CN104062362B - A kind of lap weld ultrasound detection coupling probe - Google Patents
A kind of lap weld ultrasound detection coupling probe Download PDFInfo
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- CN104062362B CN104062362B CN201310087511.7A CN201310087511A CN104062362B CN 104062362 B CN104062362 B CN 104062362B CN 201310087511 A CN201310087511 A CN 201310087511A CN 104062362 B CN104062362 B CN 104062362B
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- probe
- compressional wave
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- wave normal
- left socle
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Abstract
The present invention is the lap weld ultrasound detection coupling probe of a kind of oil transportation gas steel pipe. It is that left socle (1) be arranged in parallel with right support (2), bolt (25) and nut (26) are connected with right support (2) by left socle (1), and left socle (1) is positioned at the lower section of right support (2); Left socle (1) fixes the second plexiglass block (4) and the first plexiglass block (3) with right support (2) is each, fixes the second compressional wave normal probe (6), the 3rd compressional wave normal probe (7) and the first compressional wave normal probe (5) respectively at the second plexiglass block (4) and the first plexiglass block (3) middle part; Second compressional wave normal probe (6), the 3rd compressional wave normal probe (7) and the first compressional wave normal probe (5) order passage dual-function circuit. The present invention has higher accuracy of detection and recall rate, meets angle welding testing requirement.
Description
Technical field
The present invention is the lap weld ultrasound detection coupling probe of a kind of oil transportation gas steel pipe lap weld Inner Defect Testing, relates to hyperacoustic measurement and tubing technical field.
Background technology
In field of non destructive testing, ultrasound detection has been obtained for being widely applied as the effective detection mode of one. Ultrasonic detecting technology is one of conventional Dynamic Non-Destruction Measurement, have that penetration capacity is strong, accurate positioning and sensitivity advantages of higher, the technical advantage that particularly it is capable of the size to metal structure internal flaw and depth location is accurately measured, it is possible to the defects such as butt welded seam underbead crack, incomplete fusion, lack of penetration, slag inclusion and pore detect. Current domestic petroleum industry special welding line ultrasonic detecting instrument is a lot, but limit by steel pipe lap weld self-condition, the detection of pipe lap weld seam internal flaw is but without suitable method, existing specification makes comprehensive regulation also without to the performance rating of pipe lap weld seam, and especially ultrasound detection is also in space state.
In the past owing to lacking scientific and effective detection means, oil transportation vapour steel pipe lap weld only adopts Magnetic testing mode to detect under specific circumstances. Magnetic testing can only find face of weld and near surface flaw, it is impossible to detects that the crackle within weld seam, incomplete fusion, lack of penetration and slag inclusion etc. have the defect of bigger harm. When existing ultrasound detection mode directly applies to the detection of oil transportation gas steel pipe lap weld, being limit by welding line structure, pulse echo method or transmission method are used alone the requirement that all cannot meet 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
The purpose of the present invention is invented a kind of higher accuracy of detection and recall rate, is met the lap weld ultrasound detection coupling probe of angle welding testing requirement.
A kind of coupling probe for oil transportation gas steel pipe lap weld ultrasound detection, as depicted in figs. 1 and 2, including left socle 1, right support the 2, first plexiglass block the 3, second plexiglass block the 4, first compressional wave normal probe the 5, second compressional wave normal probe the 6, the 3rd compressional wave normal probe 7 and function conversion circuit 29.
Left socle 1 and right support 2 be arranged in parallel, bolt 25 and nut 26 are connected with right support 2 by left socle 1, and left socle 1 is positioned at the lower section of right support 2; Left socle 1 fixes the second plexiglass block 4 and the first plexiglass block 3 with right support 2 is each, fixes the second compressional wave normal probe the 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 in the middle part of the second plexiglass block 4 and the first plexiglass block 3 respectively; Second compressional wave normal probe the 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 connection function change-over circuit 29.
Wherein:
Left socle 1 is inverted " �� " shape, and its two lower limb has the first translot 17 and the second translot 18, and the first bolt hole 19 and the first tapped pin-and-hole 20 is arranged at top;
Right support 2 is inverted " �� " shape, its two lower limb has the 3rd translot 21 and the 4th translot 22, second bolt hole 23 and the second tapped pin-and-hole 24 is arranged at top, and the second bolt hole 23 on right support 2 is corresponding with the position of the first bolt hole 19 on left socle 1 and the first tapped pin-and-hole 20 respectively with the position of the second tapped pin-and-hole 24;
First plexiglass block 3 is right angled triangle, and upper end has first domatic 8, and the inclination angle of first domatic 8 is 37 �� �� 1 ��, has the first probe insertion 9 in the middle part of first domatic 8, and the central axis of the first probe insertion 9 is in first domatic 8; The front end face of the first plexiglass block 3 there is thread jack 13, rear end face has thread jack 14; Front end face thread jack 13 and rear end face thread jack 14 are connected respectively through screw is fixing with right support 2; Screw is through the 3rd translot 21 and the 4th translot 22 in face, right support 2 rear and front end, and the horizontal level of screw can as needed in carrying out horizontal adjustment in translot;
Second plexiglass block 4 is right angled triangle, upper end has second domatic 10, the inclination angle of second domatic 10 is 37 �� �� 1 ��, having the second probe insertion 11 and the 3rd probe insertion 12 on second domatic 10 respectively, the central axis of the second probe insertion 11 and the 3rd probe insertion 12 is in second domatic 10; The front end face of the second plexiglass block 4 there is thread jack 15, rear end face has thread jack 16; The front end face thread jack 15 of the second plexiglass block 4 and rear end face thread jack 16 are connected respectively through screw is fixing with left socle 1; Screw is through first translot 17 and second translot 18 in face, right support 2 rear and front end, and the horizontal level of screw can as needed in carrying out horizontal adjustment in translot;
The probe socket of the first compressional wave normal probe 5 is threaded with screw thread and the first probe insertion 9, and the probe socket of the second compressional wave normal probe 6 and the 3rd compressional wave normal probe 7 is threadeded with the second probe insertion 11 and the 3rd probe insertion 12 respectively;
Left socle 1 and right support 2 be arranged in parallel, and left socle is positioned at the lower section of right support; Bolt 25 sequentially passes through the first bolt hole 19 and the second bolt hole 23, and revolves and set nut 26, makes left socle 1 and right support 2 position, equipped with supporting spring 27 on position between left socle 1 and right support 2 on bolt 25;The first tapped pin-and-hole 20 on left socle and the second tapped pin-and-hole 24 inward turning on right support set threaded steady pin 28;
The wave beam that first compressional wave normal probe the 5, second compressional wave normal probe 6 and the 3rd compressional wave normal probe 7 are launched acoustic beam angle after corresponding plexiglass block refraction is 45 degree;
The compressional wave that first compressional wave normal probe 5 and the 3rd compressional wave normal probe 7 are launched is converted into, after entering lucite spy block refraction, the shear wave that angle is 45 �� within the workpiece and pipeline angle welding is detected, second compressional wave normal probe 6 is under the effect of single channel dual-function circuit, can only receiving the wave beam that the first normal probe is launched, itself does not launch ultrasound wave, first compressional wave normal probe 5 and the 3rd compressional wave normal probe 7 all can detect with pulse echo method, second compressional wave normal probe 6 is able to receive that the ultrasound wave that the first compressional wave normal probe 5 is launched, one one a pair probe received can be formed with the first compressional wave normal probe 5, pipeline angle welding is carried out the detection of transmission method, the power and energy of the ultrasound wave that three compressional wave normal probes in the present invention the are launched refraction through plexiglass block and single channel dual-function circuit, 3 passages can be realized at two passages, two kinds of detection scanning modes detect simultaneously, the testing result that 3 probes receive can corroborate each other, ensure to obtain higher accuracy of detection and recall rate.
First plexiglass block 3 and the second plexiglass block 4 design according to tested angle welding both sides tube wall thickness, fillet weld seam form, fillet weld size and face of weld inclination angle size. The wave beam launched to realize each probe can both realize the comprehensive covering to soldered, and ultrasound wave angle of incidence is 37 ��, and the ultrasonic transmission angle after plexiglass block reflects is 45 ��.
Compressional wave normal probe produces the principle of shear wave after adding certain angle voussoir be known technology.
It is an advantage of the invention that simple in construction, easy to use, work while achieving pulse return pattern and transmission mode wherein inside a passage, use 3 probe one-time detection can complete the transmission detection of 2 channel pulse echo detecting and 1 passage, detection faces is capable of comprehensive covering of butt welded seam inside and fusion area, weld seam both sides, pulse echo method can butt welded seam be internal and the accurate quantification of the defect of fusion area and location, transmission method can carry out quick defect examination by butt welded seam, two kinds of detection mode testing results can be confirmed mutually, ensure that higher accuracy of detection and recall rate, disclosure satisfy that the requirement that angle welding detects.
Accompanying drawing explanation
Fig. 1 is lap weld ultrasound detection coupling probe front view
Fig. 2 is lap weld ultrasound detection coupling probe side view
Fig. 3 is the front view 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 first plexiglass block 4 second plexiglass blocks
5 first compressional wave normal probe 6 second compressional wave normal probes
7 the 3rd compressional wave normal probes 8 first are domatic
9 first probe insertions 10 second are domatic
11 second probe insertion 12 the 3rd probe insertions
13 first thread jack 14 second thread jacks
15 the 3rd thread jack 16 the 4th thread jacks
17 first translot 18 second translots
The 19 first tapped pin-and-holes of bolt hole 20 first
21 the 3rd translot 22 the 4th translots
The 23 second tapped pin-and-holes of bolt hole 24 second
25 bolt 26 nuts
27 support spring 28 steady pin
29 function conversion circuit 30 first nuts
31 second nut 32 the 3rd nuts
33 the 4th nuts
Detailed description of the invention
Embodiment. this example is an experimental prototype, 8mm wall thickness oil pipeline is repaired for 12mm thickness sleeve, it is constituted as depicted in figs. 1 and 2, including left socle 1, right support the 2, first plexiglass block the 3, second plexiglass block the 4, first compressional wave normal probe the 5, second compressional wave normal probe the 6, the 3rd compressional wave normal probe 7 and function conversion circuit 29.
Left socle 1 and right support 2 be arranged in parallel, bolt 25 and nut 26 are connected with right support 2 by left socle 1, and left socle 1 is positioned at the lower section of right support 2; Left socle 1 fixes the second plexiglass block 4 and the first plexiglass block 3 with right support 2 is each, fixes the second compressional wave normal probe the 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 in the middle part of the second plexiglass block 4 and the first plexiglass block 3 respectively; Second compressional wave normal probe the 6, the 3rd compressional wave normal probe 7 and the first compressional wave normal probe 5 connection function change-over circuit 29.
In steel pipe lap weld both sides, groove length is of substantially equal, and section is isosceles right triangle, and triangle waist length is 12mm, in order to allow the acoustic beam that probe is launched at utmost realize the covering of butt welded seam, selects to launch the angle probe that angle is 45 ��; Refraction according to ripple and waveform transfer principle, known ultrasound wave spread speed respectively 3230m/s and 2720m/s in steel (shear wave) and lucite (compressional wave), obtain the shear wave that refraction angle is 45 ��, calculating incident compressional angle is 36.5 ��, can calculate wafer length L is 9.65mm, and therefore optional probe wafer is the Circular wafer of diameter phi 10mm. Frequency probe is 5MHz, and thus obtaining probe specification is 5M �� 10A45.
The size of voussoir is determined: long 35mm width 30mm height 20mm, such as Fig. 2 according to detection case;
Shelf size: inner side width 30mm.
Acoustic beam mode butt welded seam shown in Fig. 4 of probe covers.
This example is through test, work while achieving pulse return pattern and transmission mode wherein inside a passage, use 3 probe one-time detection can complete the transmission detection of 2 channel pulse echo detecting and 1 passage, detection faces is capable of comprehensive covering of butt welded seam inside and fusion area, weld seam both sides, pulse echo method can butt welded seam be internal and the accurate quantification of the defect of fusion area and location, transmission method can carry out quick defect examination by butt welded seam, two kinds of detection mode testing results can be confirmed mutually, ensure that higher accuracy of detection and recall rate, disclosure satisfy that the requirement that angle welding detects. and simple in construction, easy to use.
Claims (7)
1. a lap weld ultrasound detection coupling probe, is characterized in that it includes 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) and right support (2) be arranged in parallel, by bolt (25) and nut (26), left socle (1) is connected with right support (2), and left socle (1) is positioned at the lower section of right support (2); Left socle (1) fixes the second plexiglass block (4) and the first plexiglass block (3) with right support (2) is each, second plexiglass block (4) is fixedly arranged in the middle of the second compressional wave normal probe (6), the 3rd compressional wave normal probe (7), and the first plexiglass block (3) is fixedly arranged in the middle of the first compressional wave normal probe (5); 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 ultrasound detection coupling probe according to claim 1, it is characterized in that described left socle (1) is for inverted " �� " shape, its two lower limb 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 ultrasound detection coupling probe according to claim 1, it is characterized in that described right support (2) is for inverted " �� " shape, its two lower limb has the 3rd translot (21) and the 4th translot (22), second bolt hole (23) and the second tapped pin-and-hole (24) are arranged at top, and the second bolt hole (23) on right support (2) is corresponding with the position of the first bolt hole (19) on left socle (1) and the first tapped pin-and-hole (20) respectively with the position of the second tapped pin-and-hole (24).
4. a kind of lap weld ultrasound detection coupling probe according to claim 1, it is characterized in that described first plexiglass block (3) is right angled triangle, there are first domatic (8) upper end, the inclination angle of first domatic (8) is 37 �� �� 1 ��, having the first probe insertion (9) at first domatic (8) middle part, the central axis of the first probe insertion (9) is in first domatic (8); The front end face of the first plexiglass block (3) has thread jack (13), rear end face has thread jack (14); Front end face thread jack (13) and rear end face thread jack (14) are connected respectively through screw and right support (2) are fixing; 3rd translot (21) in screw traverse right support (2) face, rear and front end and the 4th translot (22), the horizontal level of screw can as needed in carrying out horizontal adjustment in translot.
5. a kind of lap weld ultrasound detection coupling probe according to claim 1, it is characterized in that described second plexiglass block (4) is right angled triangle, there are second domatic (10) upper end, the inclination angle of second domatic (10) is 37 �� �� 1 ��, having the second probe insertion (11) and the 3rd probe insertion (12) on second domatic (10) respectively, the central axis of the second probe insertion (11) and the 3rd probe insertion (12) is in second domatic (10); The front end face of the second plexiglass block (4) has thread jack (15), rear end face has thread jack (16); The front end face thread jack (15) of the second plexiglass block (4) and rear end face thread jack (16) are connected respectively through screw and left socle (1) are fixing; First translot (17) in screw traverse right support (2) face, rear and front end and the second translot (18), the horizontal level of screw can as needed in carrying out horizontal adjustment in translot.
6. a kind of lap weld ultrasound detection coupling probe according to claim 1, it is characterized in that the probe socket of described first compressional wave normal probe (5) is threaded with screw thread and the first probe insertion (9), the probe socket of the second compressional wave normal probe (6) and the 3rd compressional wave normal probe (7) is threadeded with the second probe insertion (11) and the 3rd probe insertion (12) respectively;
Left socle (1) and right support (2) be arranged in parallel, and left socle (1) is positioned at the lower section of right support (2); Bolt (25) sequentially passes through the first bolt hole (19) and the second bolt hole (23), and rotation sets nut (26), make left socle (1) and right support (2) location, bolt (25) is positioned on the position between left socle (1) and right support (2) equipped with supporting spring (27); The first tapped pin-and-hole (20) on left socle (1) and the second tapped pin-and-hole (24) inward turning on right support (2) set threaded steady pin (28).
7. a kind of lap weld ultrasound detection coupling probe according to claim 6, is characterized in that wave beam that described first compressional wave normal probe (5), the second compressional wave normal probe (6) and the 3rd compressional wave normal probe (7) the launch acoustic beam angle after corresponding plexiglass block reflects 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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| CN201310087511.7A CN104062362B (en) | 2013-03-19 | 2013-03-19 | A kind of lap weld ultrasound detection coupling probe |
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| CN104062362B true CN104062362B (en) | 2016-06-08 |
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| 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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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 |