CN107221364A - Nuclear fuel assembly underwater test platform and method of testing - Google Patents
Nuclear fuel assembly underwater test platform and method of testing Download PDFInfo
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- CN107221364A CN107221364A CN201710399146.1A CN201710399146A CN107221364A CN 107221364 A CN107221364 A CN 107221364A CN 201710399146 A CN201710399146 A CN 201710399146A CN 107221364 A CN107221364 A CN 107221364A
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- fuel assembly
- nuclear fuel
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention relates to the technical field of nuclear fuel assembly, a kind of nuclear fuel assembly underwater test platform and method of testing are disclosed.Nuclear fuel assembly underwater test platform, including simulation water tank, analysis portion, analysis portion include transmission and install module, detection module, drive module, analysis module, and installing module includes adjustable installation platform, reflective mirror substrate, reflective mirror pedestal；Detection module includes thing to be detected and video camera；Drive module includes the first actuator and the second actuator；Analysis module includes linear displacement transducer and data analysing terminal.Nuclear fuel assembly underwater test platform proposed by the present invention, pass through installation module, detection module, drive module, the analysis module in analysis portion, so make it that nuclear fuel assembly is tested under water, and specific design considerations is provided for the underweater vision measuring system of follow-up Nuclear Plant.
Description
Technical field
The present invention relates to the technical field of nuclear power, more particularly to a kind of nuclear fuel assembly underwater test platform and test side
Method.
Background technology
Irradiation has significant impact to nuclear fuel performance, and power plant's operation safety is constituted and challenged.As exposure time increases, core
The chemical behavior of fuel and involucrum can be significantly changed progressively, and influence its thermal technology and mechanical attributes, and such as oxygen/metal is than increase
Cause thermal conductivity reduction, pellet temperature increase and the increase of irradiation creep rate；Nuclear fuel rod outer surface can because irradiation and temperature it is comprehensive
With causing, involucrum is aoxidized and corrosion product is deposited for cooperation, and cladding tube wall thickness degree can be reduced and inhale hydrogen by corroding, and ultimately results in hydrogen
Compound is separated out, the reduction strength of materials and ductility；Irradiation growth of fuel assembly, involucrum and screen work etc..Therefore, operation is irradiated
Fuel assembly afterwards carries out pool side inspection, tracks and supervise the fuel performance of these dynamic changes, to ensureing safe operation of power plant
It is significant, particularly in the case where nuclear fuel has design alteration or fresh fuel/new material is introduced, it should more keep close
Performance is tracked.
Nuclear fuel assembly deformation measuring device is that fuel assembly pool side checks one of visual plant, its measurement being mainly used in
Nuclear fuel assembly critical size, such as tilts, bends, reverses and length, in order to ensure the essence to nuclear fuel assembly deformation measurement
Degree, the mode that fuel assembly deformation is combined using Linear displacement transducer and vision measurement system mode.
Traditional nuclear fuel test platform can not all work under water, but be filled in nuclear power field fuel assembly in spentnuclear fuel pond
In the environment of water.Therefore, the test platform that a kind of nuclear fuel assembly of design is tested under water is urgently technology to be resolved
Problem.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of nuclear fuel assembly underwater test platform
And method of testing, the problem of nuclear fuel assembly can be tested under water is solved, and be the water of follow-up Nuclear Plant
Lower vision measurement system provides specific design considerations.
The embodiments of the invention provide a kind of nuclear fuel assembly underwater test platform, including：Water tank is simulated, is arranged at described
The analysis portion in water tank is simulated, the analysis portion includes：
Module, including the reflective mirror substrate being arranged on the adjustable erecting bed are installed, and the reflective mirror base is set
Reflective mirror pedestal and camera mount on plate, the reflective mirror pedestal and the camera mount are located at the reflective mirror substrate
The same side；
Detection module, including the Underwater Camera being slidably arranged on the camera mount, and rotatable setting
Reflective mirror on the reflective mirror pedestal；
Drive module, including for driving the first drive component of the Underwater Camera movement, and it is anti-for driving
The second drive component that light microscopic is rotated；
Analysis module, including the linear displacement transducer with the underwater camera mechatronics, and with the straight line position
The data analysis terminal of displacement sensor electrical connection.
Further, the reflective mirror substrate and the camera mount are located at same one end of the adjustable installation platform.
Further, the surface difference of the camera mount and the Underwater Camera is encapsulated.
Further, the shooting head of the Underwater Camera is covered with one layer of radiation-resistant oxide-film.
Further, the detection module, which also includes being arranged at, is used for the back of the body for setting off object to be measured on the adjustable erecting bed
Scale is carved with scape template, the background template.
Further, second drive component includes motor, worm gear and the worm screw with the worm gear, described
Worm screw is connected with the reflective mirror pedestal, and the worm gear is arranged on the motor shaft.
Further, the linear displacement transducer includes coil rack, is distributed in the primary line on the coil rack
Circle, two secondary coils and the rod core that can move freely.
Further, the straight-line displacement sensing can also pass through radio company with the Underwater Camera.
The embodiment of the present invention additionally provides a kind of method of testing of nuclear fuel assembly underwater test platform, including following step
Suddenly：
S01, the current measurement examination hall irradiation size of selection do not change structure member as calibrating block；
S02, by scale accurately measure demarcation thing feature physical size；
S03, by camera acquisition reference object image, transmit signals to data analysis terminal by rectilinear transducer,
Features localization thing Pixel Dimensions are measured by rim detection or manual reconnaissance mode；
S04, the physical length for calculating object plane corresponding to each TV pixel in measurement visual field；
S05, the picture size for obtaining object to be measured, calculate the actual physical size of object to be measured.
Preferably, the object to be measured includes upper base and bottom nozzle and the core between upper base and bottom nozzle
Fuel assembly.
Preferably, the demarcation physical size of thing, the physical length of object plane corresponding to each TV pixel are positions
Measured in air.
Preferably, realize that target is real by obtaining the bottom nozzle upper surface and the upper base lower surface width measure difference
Border physical size.
The nuclear fuel assembly underwater test platform and method of testing proposed based on above-mentioned technical proposal, the embodiment of the present invention,
Pass through installation module, detection module, drive module, the analysis module in analysis portion so that nuclear fuel assembly is tested under water
For may, and provide specific design considerations for the underweater vision measuring system of follow-up Nuclear Plant.
Brief description of the drawings
Fig. 1 is nuclear fuel assembly underwater test platform structure schematic diagram in the embodiment of the present invention；
Fig. 2 is nuclear fuel assembly underwater test platform principle omission schematic diagram in the embodiment of the present invention；
Fig. 3 is camera mount structural representation in the embodiment of the present invention；
Fig. 4 is reflective mirror base construction schematic diagram in the embodiment of the present invention；
Fig. 5 a are the roll marks open defect figure of nuclear fuel assembly in the embodiment of the present invention；
Fig. 5 b are the cut open defect figure of nuclear fuel assembly in the embodiment of the present invention；
Fig. 5 c are the bonding open defect figure of nuclear fuel assembly in the embodiment of the present invention；
Fig. 5 d are the rust staining open defect figure of nuclear fuel assembly in the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it may be simultaneously present centering elements.When an element is known as " being connected to " another element, it can be with
It is directly to another element or may be simultaneously present centering elements.
Only it is phase each other in addition, it should also be noted that, the orientation term such as left and right, upper and lower in the embodiment of the present invention
To concept or using the normal operating condition of product as reference, and it should not be regarded as restrictive.Below in conjunction with tool
Realization of the body embodiment to the present invention is described in detail.
As shown in Figures 1 to 4, the embodiment of the present invention proposes a kind of nuclear fuel assembly underwater test platform, and it includes mould
Intend water tank 1, analysis portion 2, wherein, analysis portion 2 is completely deposited in the simulation water tank for filling high boron water, and analysis portion 2 is arranged on mould
Intend on water tank 1.Specifically, analysis portion 2 may include to install module 21, detection module 22, drive module 23, analysis module 24, its
In：
Module 21 is installed, including for setting the adjustable installation platform 211, Yi Jitong of reflective mirror substrate and camera mount
The reflective mirror substrate 212 that a fixture is connected to mounting platform 211 is crossed, here, reflective mirror pedestal is provided with reflective mirror substrate
213 with camera mount 214, and reflective mirror pedestal 213, camera mount 214 are located on the side of reflective mirror substrate 212；
Detection module 22, including the thing to be detected 221 being arranged on mounting platform, are slidably arranged on video camera machine 222
On Underwater Camera 222, be rotatably arranged at the reflective mirror 223 on reflective mirror pedestal 213, here, Underwater Camera 222 consolidate
Due to the removable movable slider 232 on camera mount, Underwater Camera 222 can make reciprocal axially fortune along camera mount 214
It is dynamic；
Drive module 23, including controllable it is arranged at the first driving that the camera pedestal top shoe 232 is moved up and down
Component (is not drawn into) in accompanying drawing, and controllable be arranged on reflective mirror pedestal 213 adjusts the second of the axial rotation of reflective mirror 223
Drive component (is not drawn into) in accompanying drawing；First drive component is controlled by Adjustable switch, is easy to manually operate according to demand；
Second actuator drives worm gear by motor, and worm-drive causes the rotation of reflective mirror to worm screw.
Analysis module 24, including it is arranged at the linear displacement transducer (being not drawn into accompanying drawing) and number of Underwater Camera one end
According to analysing terminal；
Above-mentioned detection module 22 is electrically connected with drive module 23 and analysis module 24.
The nuclear fuel assembly underwater test platform that the embodiment of the present invention is proposed, passes through the installation module 21 in analysis portion, inspection
Survey module 22, drive module 23, analysis module 24 so that nuclear fuel assembly is tested be possibly realized under water, and be follow-up nuclear power
The underweater vision measuring system of fuel assembly of standing provides specific design considerations.
Further, in an embodiment of the present invention, be located on can for above-mentioned reflective mirror substrate 212 and camera mount 214
One end of mounting platform 211 is adjusted, its position and the thing to be detected 221 being arranged on adjustable installation platform 211 are relative, are easy to follow-up
Measurement, above-mentioned camera mount 214 and the surface of Underwater Camera 222 so can both be prevented respectively by encapsulated processing
High boron aqueous corrosion camera mount 214, can prevent high boron water from penetrating among Underwater Camera 222 again influences video camera under water
222 life-span.
Further, in embodiments of the present invention, one layer of resistance to spoke is coated to the camera of the Underwater Camera 222 described in it
The oxide-film (being not drawn into accompanying drawing) penetrated, because the radiation of nuclear fuel can aggravate to shorten the service life of video camera 222, in order to enter
One step improves the life-span of Underwater Camera 222, can be by coating one layer of radiation-resistant oxide-film, so when camera is to determinand
When product are detected, nuclear radiation fuel can be reduced it is radiated, protect camera head, extend video camera 222
Service life.
Further, in an embodiment of the present invention, above-mentioned detection module 22 also includes being arranged at object behind to be measured
Background template (is not drawn into) in accompanying drawing, and scale is carved with above-mentioned background template, here, when shooting is radiated at object under test,
It is subsidiary to irradiate its background template together, the length of object under test can be more accurately tested out by the scale on background template
Degree, so as to improve its measuring accuracy.
Further, in an embodiment of the present invention, thing to be detected is by upper base 2211, bottom nozzle 2213 and upper pipe
Nuclear fuel assembly 2212 between seat and bottom nozzle is constituted, and the lower surface 2213 and down tube of upper base 2211 are gone out by camera imaging
Distance between the upper surface of seat, tests out the length of object under test.Above-mentioned thing to be detected can be also other structure types, herein
Unique restriction is not made.
Further, in an embodiment of the present invention, above-mentioned regulation Underwater Camera 222 is along camera mount 214
The first drive component axially moved, here, the first drive component is by controlling the sliding block on Underwater Camera to realize under water
The movement of video camera 222, sliding block now is removable can also to be fixed by fixing device, above-mentioned control Underwater Camera 222
Move up and down and be not limited to sliding block 232 or other structures part.
Further, in an embodiment of the present invention, the sliding block can be also moved to the upper end of camera mount, then
It is fixed by fixing device, by adding reflective mirror, allows its camera lamp to penetrate its dozen on a mirror, it is given out light
Image is presented in mirror, if full phase is not presented in reflective mirror, full phase is presented by it in reflective mirror for fine-tuning reflective mirror.Above-mentioned reflective mirror
223 are arranged on reflective mirror pedestal 213, because the intrinsic high radioactivity of nuclear fuel assembly has larger shadow to the electrical equipment life-span
Ring, therefore video camera direct irradiation and observe fuel assembly and can significantly shorten the service life of camera device, it is reflective by adding
Mirror 223, it is to avoid video camera 222 is directly contacted with nuclear fuel assembly, improves the service life of its video camera 222.
Further, in an embodiment of the present invention, the second drive component that above-mentioned control reflective mirror 223 is rotated includes snail
Wheel and matched worm screw (being not drawn into accompanying drawing), described worm screw is connected as a single entity with reflective mirror pedestal 213, described
Worm gear is fixed in the rotary shaft with electric machine 231, and worm gear is controlled by external electric machine 231, so, by remote
Process control electric machine 231, the driving worm gear wheel of electric machine 231, worm gear with worm engaging by driving worm screw to rotate, worm screw
Reflective mirror pedestal is driven to rotate, reflective mirror can realize its axial rotation, so as to realize the fine setting of reflective mirror 223.By long-range
The fine setting of reflective mirror 223 is realized in operation, enable its camera to complete to be imaged to measurement object by reflective mirror 223, it is to avoid people
Work is closely operated, and prevents the injury of nuclear fuel Radiation On Human body, and it can be also others to improve the above-mentioned driving structure of operating efficiency
Structure type, does not make unique restriction herein.
Further, in an embodiment of the present invention, above-mentioned linear displacement transducer 24 is by a primary coil, two times
Level coil, iron core, coil rack, the part such as shell composition, primary coil, secondary coil are distributed on coil rack, in coil
There is a rod core that can move freely in portion (accompanying drawing is not made).When iron core is in an intermediate position, two secondary coil productions
Raw induced electromotive force is equal, and such output voltage is zero；When iron core is in coil inside movement and off-center position, two
The induced electromotive force that coil is produced, there is voltage output, and its voltage swing depends on the size of displacement.Pass through electricity accordingly
Source output size, its displacement is determined by linear relationship, reaches the purpose of measurement.Above-mentioned linear displacement transducer can be with
It is electrically connected or radio company, is not repeated here by wired with Underwater Camera.
Further, in an embodiment of the present invention, above-mentioned nuclear fuel assembly underwater test platform is placed in equipped with high boron water
Simulation water tank in.Here, high boron water has higher Boron contents, and the irradiation speed that nuclear fuel can be delayed to radiate is tested it
Influence, secondly, preferably, impurity is less for the condition of water quality of high boron water, it is to avoid influence of the water quality to test result, improves under water
Measurement accuracy.
In embodiments of the present invention, foregoing invention also discloses the method for testing of nuclear fuel assembly underwater test platform, should
Method of testing comprises the following steps：
S01 chooses current measurement examination hall irradiation size and does not change structure member as calibrating block；
S02 accurately measures demarcation thing feature physical size L by scaleDemarcation；
S03 transmits signals to data analysis terminal by camera acquisition reference object image by rectilinear transducer, leads to
Cross rim detection or manual reconnaissance mode measures features localization thing Pixel Dimensions nPicture；
S04 calculates the physical length of object plane corresponding to each TV pixel in measurement visual field：DEquivalent=LDemarcation/nPicture；
S05 obtains the picture size n of target to be measuredTarget, calculate the actual physical size L of target to be measuredTarget=nTarget×DEquivalent。
Preferably, in embodiments of the present invention, choose current measurement examination hall irradiation size and do not change structure member as mark
Determine block, it is preferable that the projection section that base is not contacted with nuclear fuel assembly in selection is demarcated as calibrating block by aquatic measurement
The width L of thingDemarcation, then, by obtaining feature block transverse width pixel from the vision measurement software caliper tool measurement of exploitation
Size.Pixel equivalent actual value D is asked for by pixel equivalent calculation formulaEquivalent=LDemarcation/nPicture.During actual measurement, pixel equivalent is surveyed
Value can change with the change of the distance between video camera and measuring surface, in order to determine the pass between pixel equivalent and object distance
System, by the way that video camera is demarcated to pixel equivalent respectively by apart from upper bottom nozzle surface from remote and nearly four installation sites
(referring to table 1).
It can be seen from Table 1 that, in the case where other conditions are constant, object distance change, i.e. observed range are different, to pixel
The calibration result influence of equivalent is very big, and observed range is nearer, and pixel equivalent is smaller, therefore, when measuring surface and demarcation face are misaligned
When, measurement error is inevitably produced, therefore in actual field measurement, demarcation face and the distance between measuring surface should be made most
Amount is small, to reduce the error that pixel equivalent demarcation is produced.Therefore, in vision measurement, after the completion of industrial camera demarcation, in observation side
To theoretically irremovable.Keep object distance constant.
Pixel equivalent calibration result under the different observed ranges of table 1
Embodiment 1
In the present embodiment, the actual equivalent value of above-mentioned determination is to carry out on the water, it is determined that final equivalent value, i.e. video camera with
The distance between determinand is determined, is kept this apart from constant, its test platform is positioned under water, test underwater environment fires to core
Expect the influence of height measurement results, because the influence waterborne with underwater environment to equivalent value is smaller, therefore do not consider environment pair herein
The influence of equivalent value.
Further, table 2 and table 3 represent waterborne, go up bottom nozzle height difference measuring result under water respectively.Here aqueous medium
For common Natural Water.Distance between fixed waterborne, underwater camera device and target, by under test platform adjustment to optimum state,
Repeatedly to distance is measured between base width, bottom nozzle width, upper bottom nozzle on nuclear fuel assembly, analysis vision repeats to survey
The stability of amount and the influence factor of measurement accuracy.From test result as can be seen that the present embodiment respectively to it is waterborne, survey under water
Amount result is tested, and is increased under water compared with aquatic measurement resultant error from waterborne can be seen that with subaqueous survey result, this may
It is due to that simulation water tank is made of that, using safety glass, surrounding is transparent, external lights have very big interference to imaging picture, it may appear that
The even phenomenon of uneven illumination, causes concern feature unobvious, influences measurement accuracy.
Further, table 4 represents upper bottom nozzle height difference measuring result under different medium, from the results, it was seen that in height
Error is significantly less than common Natural Water in the medium of boron water, and this shows that by using high boron water measurement error can be reduced, and carries
High measurement accuracy.
The upper bottom nozzle height difference measuring result waterborne of table 2
Table 3 goes up bottom nozzle height difference measuring result under water
Upper bottom nozzle height difference measuring result under the different medium of table 4
Embodiment 2
In the present embodiment, using reflective mirror image-forming principle, indirect imaging test, and confirmatory measurement are carried out to target exemplar
Precision.Preferably, this experiment is respectively for waterborne and two kinds of situations are measured to base width on nuclear fuel assembly under water.Will
Sliding block is moved to the upper end of camera mount, is then fixed by fixing device, is beaten and is penetrated reflective by camera lamp
On mirror, make its give out light mirror present image, if full phase is not presented in reflective mirror, can according to the second drive component by it in reflective mirror
Full phase is presented.Table 4 and table 5 represent waterborne, go up base width measurements under water respectively, by contrast as can be seen that reflective mirror
Imaging model is closer to the straight measurement result according to model, therefore reflective mirror imaging model is before enhancing video camera service life
Put, its measurement accuracy is in the range of allowable error.
The upper bottom nozzle height difference measuring result waterborne of table 5
Table 6 goes up bottom nozzle height difference measuring result under water
Embodiment 3
In the present embodiment, nuclear fuel assembly test platform can also be surveyed to the integrality of nuclear fuel assembly outward appearance
Amount.By the manufacturing defect on nuclear fuel assembly surface, such as roll marks, cut, bonding, rust staining (see Fig. 5 a to 5d), reasonably
Type selecting camera device, artificial adjustment camera device parameter, can clean image with photographic subjects thing, realize target surface integrality
Detection.If target surface integrality is destroyed, it can be popped one's head in and detected by camera, and rejected region is entered using software
Line flag.Can significantly find out from Fig. 5 a to 5d, sample defects can be clearly it is detected go out, realize test platform energy
The possibility of enough detections for carrying out complete appearance to defect object under water.
Embodiment described above, the only specific embodiment of the invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, various equivalent repair can be readily occurred in
Change, replace and improve etc., these modifications, replacement and improvement should be all included within the scope of the present invention.Therefore, this hair
Bright protection domain should be defined by scope of the claims.
Claims (12)
1. nuclear fuel assembly underwater test platform, it is characterised in that including：Water tank is simulated, and is arranged at the simulation water tank
In analysis portion, the analysis portion includes：
Module, including the reflective mirror substrate being arranged on the adjustable erecting bed are installed, and set on the reflective mirror substrate
Reflective mirror pedestal and camera mount, the reflective mirror pedestal and the camera mount be located at the reflective mirror substrate it is same
Side；
Detection module, including the Underwater Camera being slidably arranged on the camera mount, and rotatably it is arranged at institute
State the reflective mirror on reflective mirror pedestal；
Drive module, including for driving the first drive component of the Underwater Camera movement, and for driving reflective mirror
The second drive component rotated；
Analysis module, including the linear displacement transducer with the underwater camera mechatronics, and passed with the straight-line displacement
The data analysis terminal of sensor electrical connection.
2. nuclear fuel assembly underwater test platform as claimed in claim 1, it is characterised in that the reflective mirror substrate and described
Camera mount is located at same one end of the adjustable installation platform.
3. nuclear fuel assembly underwater test platform as claimed in claim 1, it is characterised in that the camera mount with it is described
The surface difference of Underwater Camera is encapsulated.
4. nuclear fuel assembly underwater test platform as claimed in claim 3, it is characterised in that the shooting of the Underwater Camera
Head is covered with one layer of radiation-resistant oxide-film.
5. nuclear fuel assembly underwater test platform as claimed in claim 1, it is characterised in that the detection module also includes setting
Being placed on the adjustable erecting bed is used to be carved with scale on the background template for setting off object to be measured, the background template.
6. nuclear fuel assembly underwater test platform as claimed in claim 1, it is characterised in that second drive component includes
Motor, worm gear and the worm screw with the worm gear, the worm screw are connected with the reflective mirror pedestal, and the worm gear is set
In on the motor shaft.
7. nuclear fuel assembly underwater test platform as claimed in claim 1, it is characterised in that the linear displacement transducer bag
Coil rack is included, primary coil, two secondary coils on the coil rack, and the shaft-like iron that can move freely is distributed in
Core.
8. nuclear fuel assembly underwater test platform as claimed in claim 1, it is characterised in that the straight-line displacement sensing and institute
Stating Underwater Camera also can be by radio company.
9. the method for testing of nuclear fuel assembly underwater test platform, it is characterised in that comprise the following steps：
S01, the current measurement examination hall irradiation size of selection do not change structure member as calibrating block；
S02, by scale accurately measure demarcation thing feature physical size；
S03, by camera acquisition reference object image, transmit signals to data analysis terminal by rectilinear transducer, pass through
Rim detection or manual reconnaissance mode measure features localization thing Pixel Dimensions；
S04, the physical length for calculating object plane corresponding to each TV pixel in measurement visual field；
S05, the picture size for obtaining object to be measured, calculate the actual physical size of object to be measured.
10. the method for testing of nuclear fuel assembly underwater test platform as claimed in claim 9, it is characterised in that described to be measured
Object includes upper base and bottom nozzle and the nuclear fuel assembly between upper base and bottom nozzle.
11. the method for testing of nuclear fuel assembly underwater test platform as claimed in claim 9, it is characterised in that the demarcation
The physical length of object plane corresponding to the physical size of thing, each TV pixel is to be located in air to measure.
12. the method for testing of nuclear fuel assembly underwater test platform as claimed in claim 10, it is characterised in that by obtaining
Target actual physical size is realized with the upper base lower surface width measure difference in the bottom nozzle upper surface.
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| CN110208640A (en) * | 2018-11-30 | 2019-09-06 | 中航光电科技股份有限公司 | Underwater connector testing device and testing method |
| CN110208639A (en) * | 2018-11-30 | 2019-09-06 | 中航光电科技股份有限公司 | underwater connector testing device and testing method |
| CN110807773A (en) * | 2019-11-12 | 2020-02-18 | 中广核检测技术有限公司 | Nuclear power station surface defect panoramic image detection method |
| CN110853778A (en) * | 2019-11-18 | 2020-02-28 | 中国核动力研究设计院 | Irradiation device for realizing real-time measurement of axial length change of fuel element |
| CN113063358A (en) * | 2021-03-23 | 2021-07-02 | 中国核动力研究设计院 | System and method for measuring length of irradiated fuel assembly |
| CZ309882B6 (en) * | 2021-12-03 | 2024-01-10 | Centrum Výzkumu Řež S.R.O. | A method of measuring fuel assembly deformation using digital image processing from fuel inspection videos |
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