CN106841392A - A kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams - Google Patents
A kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams Download PDFInfo
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- CN106841392A CN106841392A CN201611171171.6A CN201611171171A CN106841392A CN 106841392 A CN106841392 A CN 106841392A CN 201611171171 A CN201611171171 A CN 201611171171A CN 106841392 A CN106841392 A CN 106841392A
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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
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
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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
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams, belongs to field of non destructive testing.The method is detected using a set of including phased array ultrasonic detection instrument, the computer of integrated analysis software, bound feet print phased array ultrasonic probe and voussoir, the ultrasonic testing system of scanning equipment.For different size BOSS weld seams, the suitable small footprint of selection is popped one's head in and carries out full-wafer and excites, the focusing of half sound path is set, deflection angle is minus 35 degree positive 35 degree, axial S scannings and circumference B scannings are carried out to weld seam using above-mentioned parameter, storage A scannings signal and S scannings, B scanning images, are quantified to defect length and depth on this basis.Using phased array ultrasonic detecting method proposed by the present invention, can realize to BOSS weld seam all standing Non-Destructive Testings, radiographic inspection negative plate blackness is overcome to be difficult to meet detection requirement, the problems such as Liquid penetrant testing can not detect weld seam internal flaw, and can popularization and application to other similar labyrinth weld seams Non-Destructive Testing, with important engineering application value.
Description
Technical field
The present invention relates to a kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams, it belongs to Non-Destructive Testing skill
Art field.
Background technology
Nuclear power station BOSS weld seams are the connected modes that supervisor and branch pipe are commonly used, and its change in size scope is big, complex structure.Mirror
It is a part for core first class pressure Vessel Boundary in BOSS weld seams, it lacks during manufacture and military service if there is crackle etc.
Fall into, radioactive substance can be caused to leak, have a strong impact on nuclear plant safety operation, it is therefore necessary to effective lossless inspection is carried out to it
Survey.Because BOSS throat depth gradeds scope is big, arrangement of film is difficult when causing ray detection, and photographic density can not meet
Detection is required, it is difficult to detected with ray method.According to RCC-M regulations, BOSS weld seams are carried out using layering permeating method at present
Non-Destructive Testing.But permeating method can only detect cracks with surface openings, it is impossible to find internal flaw.It is badly in need of a kind of Non-Destructive Testing at present
Method carries out all standing Non-Destructive Testing to BOSS weld seams.
Phased array ultrasonic detection has acoustic beam controllability strong, wide coverage, and the features such as detection efficiency is high, the present invention is proposed
Phased array ultrasonic detecting method is used in BOSS weld seam detections, using phased array ultrasonic detection S scannings and B scanning image phases
With reference to, realize effective detection and positioning to weld defect, quantify, provide important leverage for nuclear plant safety runs.
The content of the invention
The purpose of the present invention is a kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams.For BOSS weld seams
Complex structure, and ray detection performance difficulty and Liquid penetrant testing cannot find the problem of weld seam internal flaw, using phased array
The angular deflection on a large scale of ultrasound detection acoustic beam and focusing function, meet the requirement of BOSS weld seam detections, realize effective detection of defect
With positioning, quantitative.
The technical solution adopted by the present invention is：A kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams, its
It is characterized in：For different size BOSS weld seams, suitable bound feet print phased array probe is selected, probe full-wafer is excited, and sets poly-
Burnt mode is focused on for half sound path, and deflection angle is minus 35 degree-positive 35 degree, and welded seam area is detected using above-mentioned parameter, is deposited
The step of storage A scannings signal, S scannings and B scanning images, and reading and record defect length and depth information, methods described
It is as follows：
（1）The debris such as face of weld welding slag are removed, surface roughness requirements in detection are met；Made clearly in BOSS faces of weld
Mark, including welding position tag line and scanning position reference point；And select suitable couplant；
（2）According to BOSS weld seams branch pipe and the suitable bound feet print phased array probe of supervisor's size selection, pop one's head in as full-wafer is excited,
It is minus 35 degree-positive 35 degree to set the focusing of half sound path, deflection angle, adjustment time window ranges, setting detection sensitivity, pulse weight
Complex frequency and scanning increment etc. detect parameter；
（3）According to step（b）The parameter of middle determination carries out scanning, by phased array ultrasonic detection system acquisition detection signal and figure
Picture, and be stored among computer；
（4）A scannings signal, S images and B scanning images are recalled in Computer aided analysis, is recognized in scanning image and lacked
Image is fallen into, and defect is positioned, record defective locations information；
（5）Quantitative-length is carried out to detection defect using -6dB methods in B scanning images, and records defect length information.
The beneficial effects of the invention are as follows：Compared with existing BOSS weld inspection methods, using phased array ultrasonic detection side
Method can overcome by radiographic inspection negative plate difficult arrangement, photographic density it is uneven caused by can not meet that detection requires ask
Topic, and the problem that Liquid penetrant testing can not be detected to weld seam internal flaw can be overcome.Phased array ultrasonic detecting method passes through S
Scanning and B scanning images are combined, defect intuitive display, quantitative accurate, disclosure satisfy that Practical Project detection demand.
Brief description of the drawings
The present invention will be further described with example below in conjunction with the accompanying drawings.
Fig. 1 is phased array supersonic test system connection diagram.
Fig. 2 is tested defect distribution and axial scanning schematic diagram.
Fig. 3 is circumferential scanning schematic diagram.
Fig. 4 is S scannings and the B scanning images for fusing line position incomplete fusion defect up and down.（a）Upper melt run S scanning images；
（b）Upper melt run, B scanning images；（c）Melt run, S scanning images are gone up down；（d）Lower melt run, B scanning images.
Specific embodiment
In a kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams, the phased array supersonic test system of use
As shown in figure 1, including phased array ultrasonic detection instrument, the computer of integrated analysis functional software, bound feet print phased array probe,
Scanning equipment etc..Measurement and process step are as follows：
（1）Research object is BOSS weld seam test specimens, test specimen supervisor external diameter 170.00mm, wall thickness 20.00mm, branch pipe external diameter
34.00mm, wall thickness 10.00mm, material longitudinal wave velocity 5790m/s.Upper and lower fusion line position is processed at one not respectively in weld seam
Fusion defect, defect width 10.00mm, away from face of weld depth 30.00mm.The debris such as face of weld welding slag are removed before experiment,
Meet surface roughness requirements in detection.Clear mark, including welding position tag line and scanning are made in BOSS faces of weld
Position reference point, and select suitable couplant.
（2）As shown in Fig. 2 experiment prints phased array probe, its frequency 5MHz, wafer size 0.55mm, chip using bound feet
Width 6mm.The small footprint probe of phased array ultrasonic detection is placed on BOSS faces of weld during detection, sets gradually detection parameter：
Longitudinal wave velocity 5790m/s, the type of focusing are the focusing of half sound path, depth of focus 30.00mm, fan sweeping angle are minus 35 degree-positive 35 degree,
Sample frequency 100MHz.
（3）As shown in Figures 2 and 3, by bound feet print phased array probe be placed on BOSS faces of weld carry out axial scanning and
Circumferential scanning, fully ensures probe and workpiece good coupling during scanning.Collection measured signal and image, and be stored in computer it
In be used for subsequent analysis.
（4）In Fig. 4（a）With（c）It is phased array ultrasonic detection BOSS faces of weld axial direction S scanning images, can be clear by figure
The upper and lower sophisticated echo of upper and lower fusion line position incomplete fusion defect is identified, depth localization is carried out to defect accordingly, as a result divided
Not Wei 31.47,31.59mm, quantitative error is respectively 4.90%, 5.30%.
（5）In Fig. 4（b）With（d）It is the circumferential B scannings image of phased array ultrasonic detection BOSS weld seams, can be clearly known by figure
Do not go out the upper and lower sophisticated echo of upper and lower fusion line position incomplete fusion defect.Quantitative-length is carried out to defect using -6dB methods, is tied
Fruit is respectively 10.89mm, 10.85mm, correspondence quantitative error 8.90%, 8.50%.
Claims (1)
1. a kind of phased array ultrasonic detecting method for nuclear power station BOSS weld seams, it is characterized in that：For different size BOSS welderings
Seam, selects suitable bound feet print phased array probe, and probe full-wafer is excited, and sets the type of focusing for half sound path is focused on, deflection angle
It is minus 35 degree-positive 35 degree to spend, and welded seam area is detected using above-mentioned parameter, storage A scannings signal, S scannings and B scannings
The step of image, and reading and record defect length and depth information, methods described, is as follows：
（1）The debris such as face of weld welding slag are removed, surface roughness requirements in detection are met；Made clearly in BOSS faces of weld
Mark, including welding position tag line and scanning position reference point；And select suitable couplant；
（2）According to BOSS weld seams branch pipe and the suitable bound feet print phased array probe of supervisor's size selection, pop one's head in as full-wafer is excited,
It is minus 35 degree-positive 35 degree to set the focusing of half sound path, deflection angle, adjustment time window ranges, setting detection sensitivity, pulse weight
Complex frequency and scanning increment etc. detect parameter；
（3）According to step（b）The parameter of middle determination carries out scanning, by phased array ultrasonic detection system acquisition detection signal and figure
Picture, and be stored among computer；
（4）A scannings signal, S images and B scanning images are recalled in Computer aided analysis, is recognized in scanning image and lacked
Image is fallen into, and defect is positioned, record defective locations information；
（5）Quantitative-length is carried out to detection defect using -6dB methods in B scanning images, and records defect length information.
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Cited By (7)
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| CN108414622A (en) * | 2018-02-08 | 2018-08-17 | 中兴海陆工程有限公司 | Stainless steel tube butt weld phased array ultrasonic detecting method |
| CN109307713A (en) * | 2018-11-16 | 2019-02-05 | 山东核电设备制造有限公司 | A kind of nuclear power steel containment vessel butt weld detection method |
| CN109358111A (en) * | 2018-09-15 | 2019-02-19 | 中国核工业二三建设有限公司 | A kind of BOSS welding-seam phased array supersonic detection method based on curved surface shoulder coupling device |
| CN111983030A (en) * | 2020-08-20 | 2020-11-24 | 南京中车浦镇城轨车辆有限责任公司 | Friction welding seam defect quantitative detection method and system based on ultrasonic phased array |
| CN112362743A (en) * | 2020-12-10 | 2021-02-12 | 中广核工程有限公司 | Nuclear power station loop stainless steel BOSS welding line phased array ultrasonic detection device and method |
| CN112834533A (en) * | 2021-01-06 | 2021-05-25 | 广东核电合营有限公司 | Nondestructive testing method for branch pipe welding seam of nuclear power station |
| CN115825235A (en) * | 2022-12-19 | 2023-03-21 | 泸州市市场检验检测中心 | Automatic A-type pulse reflection type ultrasonic detection process for storage tank welding joint |
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Cited By (9)
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|---|---|---|---|---|
| CN108414622A (en) * | 2018-02-08 | 2018-08-17 | 中兴海陆工程有限公司 | Stainless steel tube butt weld phased array ultrasonic detecting method |
| CN109358111A (en) * | 2018-09-15 | 2019-02-19 | 中国核工业二三建设有限公司 | A kind of BOSS welding-seam phased array supersonic detection method based on curved surface shoulder coupling device |
| CN109307713A (en) * | 2018-11-16 | 2019-02-05 | 山东核电设备制造有限公司 | A kind of nuclear power steel containment vessel butt weld detection method |
| CN111983030A (en) * | 2020-08-20 | 2020-11-24 | 南京中车浦镇城轨车辆有限责任公司 | Friction welding seam defect quantitative detection method and system based on ultrasonic phased array |
| CN112362743A (en) * | 2020-12-10 | 2021-02-12 | 中广核工程有限公司 | Nuclear power station loop stainless steel BOSS welding line phased array ultrasonic detection device and method |
| CN112834533A (en) * | 2021-01-06 | 2021-05-25 | 广东核电合营有限公司 | Nondestructive testing method for branch pipe welding seam of nuclear power station |
| CN112834533B (en) * | 2021-01-06 | 2023-01-31 | 广东核电合营有限公司 | Nondestructive testing method for branch pipe welding seam of nuclear power station |
| CN115825235A (en) * | 2022-12-19 | 2023-03-21 | 泸州市市场检验检测中心 | Automatic A-type pulse reflection type ultrasonic detection process for storage tank welding joint |
| CN115825235B (en) * | 2022-12-19 | 2024-05-14 | 泸州市市场检验检测中心 | Automatic A-type pulse reflection ultrasonic detection process for welding joint of storage tank |
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Application publication date: 20170613 |