CN108279239A - A kind of automatic appearance delection device of spheric fuel element - Google Patents
A kind of automatic appearance delection device of spheric fuel element Download PDFInfo
- Publication number
- CN108279239A CN108279239A CN201711404728.0A CN201711404728A CN108279239A CN 108279239 A CN108279239 A CN 108279239A CN 201711404728 A CN201711404728 A CN 201711404728A CN 108279239 A CN108279239 A CN 108279239A
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- Prior art keywords
- fuel element
- camera
- appearance delection
- defect
- spheric fuel
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/951—Balls
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8854—Grading and classifying of flaws
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
Abstract
The present invention relates to a kind of automatic appearance delection device of spheric fuel element, including feed mechanism, initial survey station, conveying mechanism, reinspection station, sorting mechanism and it is sequentially connected；Workpiece for measurement is pushed to initial survey station by feed mechanism, but depth big to area is detected than shallower defect；Reinspection station is pushed to by conveying mechanism again, defect small to area but that depth is bigger is detected；After completing detection, unqualified ball magazine is entered by the unqualified element sphere that sorting mechanism is rejected, qualified ball enters qualified ball discharging machine.The present invention efficiently solves the influence that testing result is vulnerable to the destabilizing factors such as the technical merit, sense of responsibility, tired degree of personnel, significantly reduce flase drop and omission factor, and the degree of automation greatly improves, and saves visual detection personnel amount, effectively reduces enterprise's cost of labor and management cost.
Description
Technical field
The invention belongs to spheric fuel element appearance detection fields, and in particular to a kind of automatic appearance inspection of spheric fuel element
Survey device.
Background technology
The technology for being presently used for defects of vision detection has：Eddy current testing method, ultrasonic testing, photoelectric detection method, sound hair
Penetrate method and artificial detection method etc..Eddy current testing method is the detection that defect is carried out using electromagnetic induction principle.Examined product is in alternation
Eddy current will be generated under magnetic fields, the surface defect of product influences size and the distribution of eddy current, defective product and normal
The Eddy Distribution situation of product can receive the variation of eddy current to judge that defect whether there is according to sensor.This method pair
The visions such as crackle, burn and pin hole are processed and fault in material has higher sorting capability, poor to Surface Defect Recognition.Separately
Outside, require there cannot be metal around eddy current sensor in detection process, nonmetallic system can only be used by being responsible for the mechanism of vision expansion
It does, needs to be replaced frequently, testing cost is extremely high, and domestic enterprise is difficult to bear, and is normally only used for the high-accuracy vision sampling observation of aviation, no
It can carry out whole detections.Ultrasonic detection technology is when being propagated in the medium using ultrasonic wave, and different interfaces will generate different
Waveform.When product surface is defective, the ultrasonic wave of injection encounters defect and is reflected back.If product surface does not lack
It falls into, then the ultrasonic wave injected has arrived bottom and can just be reflected back.Receive using piezoelectric effect as the ultrasonic probe of principle anti-
Signal is penetrated, involves boundary wave according to signal waveform such as defect waves, bottom wave, transmitting and judges the type of defect.Detect the defects of vision
The probe of Shi Xuanyong is point focusing probe, and makees couplant between vision and detecting head surface with certain thickness water layer.In order to make
Ultrasonic wave is incident on heterogeneous interface, it is necessary to assure probe installation off-axis certain distance measures.It is detected with the method
When spherical object surface defect, it is desirable that defect must be sufficiently large or closeer, and otherwise probe does not receive the wave that defect reflection is returned,
Therefore ultrasonic testing is suitable for detecting crackle and planar defect.In addition, this method is not intuitive to the judgement of defective waveform, it is fixed
Property quantitatively characterizing it is inaccurate, evaluation method is lacked to testing result, visual surface defect on-line automaticization is unsuitable for and detects.For
The difficulty of spherical surface defect detection mainly has：One spherical product surface defect is randomly dispersed on sphere, is needed ball
Body all " expansion ", can just detect all sites of vision；Secondly detection is not limited by visual size specification, it is desirable that lacking
Be trapped into the quantitative detection and analysis of row, defect form, type detected, identified and counted automatically, and can by its long-term preservation in case
It inquires and uses from now on；Thirdly not influenced by production environment, accuracy of detection, efficiency and stability are ensured.
High temperature gas cooled reactor spheric fuel element surface defects detection, which is one, has high reproducibility, complexity and intelligent
Work, at present high temperature gas cooled reactor element Plant carry out spheric fuel element surface defect detection when mainly using visually inspection
It surveys.Spheric fuel element output per day is more than 1300, using traditional detection method will testing staff, pass through naked eyes or knot
It closes aobvious magnifying glass and is observed inspection.The method is easy by the technical merit of worker, mood, sense of responsibility, tired degree etc. no
The influence of ballast, so flase drop and omission factor are very high, and the degree of automation is low, and cost of labor and pipe are increased to company
Manage cost.In addition, the process of many detections not only requires nothing more than the detection of appearance, while needing the accurate statistics money for obtaining detection
Material, such as spheric fuel element surface defect type, size etc., these work are difficult to be rapidly completed by human eye.In view of this
The presence of problem need to establish a kind of quick, intelligent visible detection method as early as possible.
Invention content
It is an object of the invention to：The present invention provides a kind of automatic appearance delection device of spheric fuel element, based on camera shooting
Machine and Computer Image Processing carry out spheric fuel element surface defect with identification technology to detect and identify that classification is set automatically
It is standby, by the combination with mechanical structure, the dent to spheric fuel element, cut mark, notch and machining trace etc. may be implemented
The detection of aspect.
Technical scheme is as follows：A kind of automatic appearance delection device of spheric fuel element, including feed mechanism, just
Inspection station, conveying mechanism, reinspection station, sorting mechanism are simultaneously sequentially connected；Workpiece for measurement is pushed to initial survey station by feed mechanism,
But depth big to area is detected than shallower defect；Reinspection station is pushed to by conveying mechanism again, it is small to area but deep
Bigger defect is spent to be detected；After completing detection, unqualified ball is entered by the unqualified element sphere that sorting mechanism is rejected
Magazine, qualified ball enter qualified ball discharging machine.
The initial survey station and reinspection station includes image capturing system and image analysis system.
The image capturing system and image analysis system includes light source, optical system, image capture system, picture number
Word module, Digital Image Processing module, intelligent decision decision-making module and Mechanical course execution module；Pass through Image Acquisition first
The target being ingested is converted into picture signal by system, is then transformed into digitized signal and is sent dedicated image analysis system to
System, according to pixel distribution and brightness, colouring information, is transformed into digitized signal.
The image capturing system and image analysis system can realize the bad part of automatic sorting, learn threshold values automatically,
Common workpiece parameter automatically configures, the output of conventional statistic project, various operating mode prompts and alarm.
The initial survey station includes phase column, camera adjustments device, camera and camera lens, light source, positioning cylinder, clamps actively
Swivel head clamps translation stage, clamps driven swivel head, lifting rotation head, elevating translational platform；The diameter 60mm of element sphere, camera
And the field number 45mm of camera lens, 16 width figures of often circle bat, point 4 circles clap the surfaces of complete a element spheres.
The reinspection station includes phase column, camera adjustments device, camera and camera lens, light source lift cylinder, light source, rotation
Device, positioning cylinder, lifting rotation head and translation stage；The field number 60mm of the diameter 60mm of element sphere, camera and camera lens, often
Circle claps 16 width figures, and point 3 circles clap the surface of complete element sphere.
The area is big but depth than shallower defect includes pit and pitted skin.
The defect that the area is small but depth is bigger includes crackle and trachoma.
The remarkable result of the present invention is：The present invention efficiently solves testing result and is vulnerable to the technical merit of personnel, duty
The influence of the destabilizing factors such as Ren Xin, tired degree significantly reduces flase drop and omission factor, and the degree of automation greatly improves,
Visual detection personnel amount is saved, enterprise's cost of labor and management cost are effectively reduced.In addition detection can also accurately be obtained
Statistics, such as spheric fuel element surface defect type, size etc. play the technology controlling and process of spheric fuel element manufacture
Good directive function has been arrived, has had many advantages, such as that test speed is fast, parameter is complete, it is accurate to measure.
The invention provides reference for the research of the surface quality automatic measurement technique of other ball products, while being follow-up
Expanding production for high temperature gas cooled reactor element Plant provides technological reserve.
Description of the drawings
Fig. 1 is a kind of overhaul flow chart of the automatic appearance delection device of spheric fuel element；
Fig. 2 is initial survey station structure schematic diagram；
Fig. 3 is reinspection station structure schematic diagram；
In figure：17 phase columns, 18 camera adjustments devices, 19 cameras and camera lens, 20 light sources, 21 positioning cylinders, 22 clamp actively
Swivel head, 23 clamp translation stage, the driven swivel head of 24 clampings, 25 lifting rotation heads, 26 elevating translational platforms, 27 phase columns, 28 phases
Machine adjuster, 29 cameras and camera lens, 30 light source lift cylinders, 31 light sources, 32 rotating devices, 33 positioning cylinders, 34 lifting rotations
Head, 35 translation stages.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment is to a kind of automatic appearance detection dress of spheric fuel element of the present invention
It sets and is described in further detail.
As shown in Figure 1, a kind of automatic appearance delection device of spheric fuel element, including feed mechanism, initial survey station, conveying
Mechanism, reinspection station, sorting mechanism are simultaneously sequentially connected；Workpiece for measurement is pushed to initial survey station by feed mechanism, it is big to area but
Depth is detected than shallower defect；Reinspection station is pushed to by conveying mechanism again, but depth small to area is bigger
Defect is detected；After completing detection, unqualified ball magazine is entered by the unqualified element sphere that sorting mechanism is rejected, is closed
Lattice ball enters qualified ball discharging machine.
The initial survey station and reinspection station includes image capturing system and image analysis system.
The image capturing system and image analysis system includes light source, optical system, image capture system, picture number
Word module, Digital Image Processing module, intelligent decision decision-making module and Mechanical course execution module；Pass through Image Acquisition first
The target being ingested is converted into picture signal by system, is then transformed into digitized signal and is sent dedicated image analysis system to
System, according to pixel distribution and brightness, colouring information, is transformed into digitized signal.
The image capturing system and image analysis system can realize the bad part of automatic sorting, learn threshold values automatically,
Common workpiece parameter automatically configures, the output of conventional statistic project, various operating mode prompts and alarm.
As shown in Fig. 2, the initial survey station includes phase column 17, camera adjustments device 18, camera and camera lens 19, light source
20, positioning cylinder 21, clamping active rotation head 22, clamping translation stage 23, the driven swivel head 24 of clamping, lifting rotation head 25, liter
Translation stage 26 drops；The field number 45mm of the diameter 60mm of element sphere, camera and camera lens 19,16 width figures of often circle bat, point 4 circles have been clapped
The surface of entire element sphere.
As shown in figure 3, the reinspection station includes phase column 27, camera adjustments device 28, camera and camera lens 29, light source liter
Cylinder 30, light source 31, rotating device 32, positioning cylinder 33, lifting rotation head 34 and translation stage 35 drop；The diameter of element sphere
The field number 60mm of 60mm, camera and camera lens 19,16 width figures of often circle bat, point 3 circles clap the surfaces of complete a element spheres.
The area is big but depth than shallower defect includes pit and pitted skin.
The defect that the area is small but depth is bigger includes crackle and trachoma.
Embodiment
After the completion of automatic appearance delection device is developed, the Comparability test of automatic appearance detection and visual detection is carried out.Ball
Shape fuel element surface quality detection project altogether need to carry out element sphere finish, machining trace and chip, greasy dirt and other
The defects of pollutant, pit, trachoma, notch and machining trace, tests.Criterion be gather around there are one tangential length >=
5mm and the defect of radial depth >=2mm or the defect of two tangential length >=2mm and radial depth >=1mm are considered as unqualified member
Part ball.
1 visual detection of table is compared with automatic appearance delection device testing result
By comparison it is found that automatic appearance delection device can effectively detect element sphere surface defect, visually examined with personnel
Survey indifference.
Claims (8)
1. a kind of automatic appearance delection device of spheric fuel element, it is characterised in that：Including feed mechanism, initial survey station, conveying
Mechanism, reinspection station, sorting mechanism are simultaneously sequentially connected；Workpiece for measurement is pushed to initial survey station by feed mechanism, it is big to area but
Depth is detected than shallower defect；Reinspection station is pushed to by conveying mechanism again, but depth small to area is bigger
Defect is detected；After completing detection, unqualified ball magazine is entered by the unqualified element sphere that sorting mechanism is rejected, is closed
Lattice ball enters qualified ball discharging machine.
2. a kind of automatic appearance delection device of spheric fuel element as described in claim 1, it is characterised in that：The initial survey
Station and reinspection station include image capturing system and image analysis system.
3. a kind of automatic appearance delection device of spheric fuel element as claimed in claim 2, it is characterised in that：The image
Acquisition system and image analysis system include light source, optical system, image capture system, image digitazation module, digital picture
Processing module, intelligent decision decision-making module and Mechanical course execution module；First by image capturing system, the mesh that will be ingested
Mark is converted into picture signal, is then transformed into digitized signal and sends dedicated image analysis system to, according to pixel distribution and
Brightness, colouring information, are transformed into digitized signal.
4. a kind of automatic appearance delection device of spheric fuel element as claimed in claim 2, it is characterised in that：The image
Acquisition system and image analysis system can realize the bad part of automatic sorting, learn threshold values automatically, and common workpiece parameter is matched automatically
It sets, the output of conventional statistic project, various operating mode prompts and alarm.
5. a kind of automatic appearance delection device of spheric fuel element as described in claim 1, it is characterised in that：The initial survey
Station include phase column, camera adjustments device, camera and camera lens, light source, positioning cylinder, clamp active rotation head, clamp translation stage,
Clamp driven swivel head, lifting rotation head, elevating translational platform；The field number of the diameter 60mm of element sphere, camera and camera lens
45mm, 16 width figures of often circle bat, point 4 circles clap the surfaces of complete a element spheres.
6. a kind of automatic appearance delection device of spheric fuel element as described in claim 1, it is characterised in that：The reinspection
Station includes phase column, camera adjustments device, camera and camera lens, light source lift cylinder, light source, rotating device, positioning cylinder, lifting
Swivel head and translation stage；The field number 60mm of the diameter 60mm of element sphere, camera and camera lens, 16 width figures of often circle bat, point 3 circles are clapped
The surface of complete element sphere.
7. a kind of automatic appearance delection device of spheric fuel element as described in claim 1, it is characterised in that：The area
Big but depth includes pit and pitted skin than shallower defect.
8. a kind of automatic appearance delection device of spheric fuel element as described in claim 1, it is characterised in that：The area
Small but bigger depth defect includes crackle and trachoma.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711404728.0A CN108279239A (en) | 2017-12-22 | 2017-12-22 | A kind of automatic appearance delection device of spheric fuel element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711404728.0A CN108279239A (en) | 2017-12-22 | 2017-12-22 | A kind of automatic appearance delection device of spheric fuel element |
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| CN108279239A true CN108279239A (en) | 2018-07-13 |
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| CN201711404728.0A Pending CN108279239A (en) | 2017-12-22 | 2017-12-22 | A kind of automatic appearance delection device of spheric fuel element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113155842A (en) * | 2021-03-01 | 2021-07-23 | 唐芮 | System and method for detecting defects of assembly line |
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Application publication date: 20180713 |