CN105006261A - Nuclear fuel subassembly video detection method and detection device - Google Patents
Nuclear fuel subassembly video detection method and detection device Download PDFInfo
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- CN105006261A CN105006261A CN201510386099.8A CN201510386099A CN105006261A CN 105006261 A CN105006261 A CN 105006261A CN 201510386099 A CN201510386099 A CN 201510386099A CN 105006261 A CN105006261 A CN 105006261A
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- 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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Abstract
The invention discloses a nuclear fuel subassembly video detection method. The nuclear fuel subassembly video detection method comprises following steps: (1) distance calibration in a photographed area is carried out, and nuclear fuel subassembly video images are collected; (2) the video images are processed, displayed, and stored, two calibration points of distance calibration in the video images are determined, and a measuring area in the video images is acquired; (3) the size of the measuring area is calculated, wherein actual calibration distance Lb between the two calibration points is acquired, image calibration distance Np between the two calibration points in the video images is calculated, image defect size Nc in the measuring area in the video images is calculated, and actual defect size Lc of the measuring area is calculated and stored based on the actual calibration distance Lb, the image calibration distance Np, and the image defect size Nc. The nuclear fuel subassembly video detection method can be used for observing situations of nuclear fuel subassemblies via video images, calculating defect size in the nuclear fuel assemblies, accurately determining that whether deformation of the nuclear fuel subassemblies is caused, and determining deformation degree accurately.
Description
Technical field
The present invention relates to nuclear power generation field, the video particularly relating to Nuclear Power Station nuclear fuel assembly detects.
Background technology
Nuclear fuel assembly is made up of nuclear fuel rod, nuclear fuel assembly screen work, holddown spring, upper base and bottom nozzle etc.Fuel can holds nuclear fuel rod, fuel and cooling medium is kept apart, and contains fission gas.It is the first barrier preventing radioactive particle from escaping.When normally running, nuclear fuel rod all likely causes fuel can deformation fracture due to the fission gas of thermal expansion, densification, swelling, crack and release, primary circuit coolant activity is caused to improve, therefore need to carry out necessary detection to nuclear fuel assembly, change nuclear fuel assembly in time when nuclear fuel assembly is damaged.
Due to the whole testing process more complicated of nuclear fuel assembly, consuming time longer, therefore during the defects detection of nuclear fuel assembly, by video detecting device, simple Preliminary detection is carried out to nuclear fuel assembly, consuming time short, equipment cost is low, the step of nuclear fuel assembly being carried out to video detection comprises: use each of camera observation nuclear fuel assembly, judge the deformation extent of nuclear fuel assembly and the state of appearance of nuclear fuel assembly screen work, whether component internal has differently is stayed thing, whether outer nuclear fuel rod has breakage, the surface appearances such as scuffing, thus judge the peripheral situations of nuclear fuel assembly, as determining whether the foundation of changing clubs work.
But, in above-mentioned detection of fuel video detecting method, judge that the deformation extent of nuclear fuel assembly needs operating personnel to judge according to practical experience human eye, often because operating personnel lack experience or due to the limitation generation erroneous judgement of human eye, detection accuracy is poor.
Summary of the invention
The object of this invention is to provide the nuclear fuel assembly video detecting method that detection accuracy is high.
Another object of the present invention is to provide the high nuclear fuel assembly video detecting device of a kind of detection accuracy.
In order to realize there is object, the invention discloses a kind of nuclear fuel assembly video detecting method, comprise the following steps: (1) arranges the distance calibration that at least two actual ranges are determined in the shooting area of shooting main body, use shooting main body to gather the video image of nuclear fuel assembly, described shooting main body comprises video camera and illuminating lamp; (2) process, show and store described video image, determine the calibration point of the described distance calibration that two actual ranges are determined in described video image, accept the dimensional measurement signal of outside input and determine the measured zone on described video image according to described dimensional measurement signal; (3) size of described measured zone is calculated, specifically comprise: obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, demarcate distance Lb, image calibration distance Np and image deflects size Nc according to described reality and calculate and store the actual defects size Lc of described measured zone.
Compared with prior art, nuclear fuel assembly video detecting method of the present invention not only can observe state of appearance and the surface appearance of nuclear fuel assembly by video image, can also by determining the calibration point that two actual ranges are determined in video image, the physical size of measured zone in video image is calculated by the image calibration Distance geometry of two calibration points actual demarcation distance, judge by the actual defects size Lc of measured zone the degree whether nuclear fuel assembly is out of shape and is out of shape, judge that precision is high.
Preferably, the method arranging distance calibration is that card is demarcated in parallel placement one on measured of described nuclear fuel assembly, described demarcation card is provided with the distance calibration that at least two actual ranges are determined, determine in described step (2) that described in two, the method for calibration point comprises: the demarcation command signal accepting outside input, determine two calibration points according to the demarcation card region of described demarcation command signal in described video image.
Preferably, the step arranging distance calibration comprises: use laser calibration equipment to send distance to the measured face of described nuclear fuel assembly and determine and the distance calibration determined to arrange two actual ranges of two parallel laser spots, determine in described step (2) that described in two, the method for calibration point comprises: the spot center extracting laser spots described in two in described video image, to obtain calibration point described in two.The program using the laser spots of two parallel laser source directive nuclear fuel assemblies as distance calibration, be convenient to the determination to calibration point in video image, by extracting the spot center of laser spots described in two to obtain calibration point described in two in described video image, effectively ensure that measuring accuracy.
More specifically, extract the spot center of laser spots described in two according to grey scale centre of gravity method, the Gaussian distribution center of comparable more accurate location spot, determines the position of spot center, reduces the error that hot spot intensity profile asymmetry causes.
More specifically, described step (1) also comprises before gathering described video image: regulate the irradiating angle of described laser calibration equipment to make described lasing light emitter vertical sand shooting to measured of described nuclear fuel assembly.
More specifically, described laser calibration equipment and described video camera are fixed together, described step also comprises in (3), calculate lasing light emitter described in two in described laser calibration equipment respectively with laser distance L1, L2 of described nuclear fuel assembly, correct described actual defects size Lc according to described laser distance L1, L2.
Preferably, also comprise before described step (1): (a) utilizes auxiliary the hanging in Spent Fuel Pool to capture nuclear fuel assembly and the appropriate location hung on by nuclear fuel assembly in described Spent Fuel Pool; B shooting main body is fixed on the predeterminated position in described Spent Fuel Pool by (), be greater than to make the video area of described shooting main body the lateral separation that described nuclear fuel assembly is detected face; C () is from each detection faces of nuclear fuel assembly described in the threshold marker of described nuclear fuel assembly and nuclear fuel rod; D () adjusts the position of described nuclear fuel assembly with the camera lens making next detection faces of described nuclear fuel assembly be positioned at described video camera, and repeat step (1)-(3), until complete the detection of described each detection faces of nuclear fuel assembly.
Preferably, described shooting main body also comprises two-dimentional motor, and described two-dimentional motor regulates the shooting angle of described video camera and controls described illuminating lamp work.
Preferably, the concrete steps calculating described actual defects size Lc in described step (3) comprise: the physical size D calculating each pixel on video image according to formula D=Lb/Np, calculate described actual defects size Lc according to formula Lc=Nc*D.
In order to realize another object of the present invention, the invention discloses a kind of nuclear fuel assembly video detecting device, comprise shooting main body, distance calibration equipment, controller and manipulation screen, described shooting main body comprises shooting main body, described shooting main body comprises video camera and illuminating lamp, and described shooting main body to stretch in described Spent Fuel Pool and gathers the video image of nuclear fuel assembly; The distance calibration that described distance calibration equipment is determined at shooting area setting at least two actual ranges of described video camera; Described controller comprises control module, graphics processing unit and dimension calculating unit, and described control module controls the action of described shooting main body according to shooting control command; Described graphics processing unit receives the video image that described shooting main body gathers, and processes and stores described video image, and the described video image after process is sent to display in manipulation screen; Described dimension calculating unit determines the measured zone on described video image according to dimensional measurement signal; Determine two calibration points of the described distance calibration that two actual ranges are determined in described video image; Obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, demarcate distance Lb, image calibration distance Np and image deflects size Nc according to described reality and calculate and store the actual defects size Lc of described measured zone; Described manipulation screen receives the command signal of outside input and the command signal that outside inputs is sent in described controller, shows the video image of input in described controller, and described command signal comprises dimensional measurement signal and shooting control command.
Compared with prior art, nuclear fuel assembly video detecting device of the present invention not only can observe state of appearance and the surface appearance of nuclear fuel assembly by video image, the physical size of measured zone in video image can also be calculated, judge by the actual defects size Lc of measured zone the degree whether nuclear fuel assembly is out of shape and is out of shape, judge that precision is high.
Preferably, described distance calibration equipment comprises demarcates card, described demarcate card be arranged at shooting main body shooting area in and be arranged in parallel with the measured face of described nuclear fuel assembly, and described demarcation blocks the distance calibration having at least two actual ranges and determine, described command signal comprises demarcation command signal, and described controller determines two calibration points according to the demarcation card region of described demarcation command signal in described video image.
Preferably, described distance calibration equipment comprises laser calibration equipment, described laser calibration equipment comprises two laser source, lasing light emitter described in two sends distance and determines and the distance calibration determined to arrange two actual ranges of two parallel laser spots to the measured face of described nuclear fuel assembly, described controller extracts the spot center of laser spots described in two to obtain calibration point described in two in described video image.
Particularly, described controller extracts the spot center of laser spots described in two according to grey scale centre of gravity method.
Particularly, described laser calibration equipment and described video camera are fixed together, and described shooting main body also comprises two-dimentional motor, and described two-dimentional motor regulates the shooting angle of described video camera and controls described illuminating lamp work.
Particularly, described laser calibration equipment and described video camera are fixed together, described laser calibration equipment calculate lasing light emitter described in two in described laser calibration equipment respectively with laser distance L1, L2 of described nuclear fuel assembly, described controller corrects described actual defects size Lc according to described laser distance L1, L2.
Preferably, described nuclear fuel assembly video detecting device also comprises fixed mount and stock, described fixed mount is connected with one end of described stock and is fixed on Spent Fuel Pool pool wall, the other end of described stock stretches into described Spent Fuel Pool and fixing described shooting main body, and described shooting main body gathers described video image.
Preferably, described controller calculates the physical size D of each pixel on video image according to formula D=Lb/Np, calculates described actual defects size Lc according to formula Lc=Nc*D.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of nuclear fuel assembly video detecting method of the present invention.
Fig. 2 is the detection schematic diagram that the present invention uses nuclear fuel assembly described in shooting subject detection.
Fig. 3 is the enlarged diagram of part A in Fig. 2 of the present invention.
Fig. 4 is the structural representation of nuclear fuel assembly video detecting device of the present invention.
Fig. 5 is the structural representation of shooting main body of the present invention.
Fig. 6 is the structured flowchart of nuclear fuel assembly video detecting device of the present invention.
Fig. 7 is the structural representation demarcating card of the present invention.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
Referring to figs. 2 to Fig. 6, the invention discloses a kind of nuclear fuel assembly video detecting device 200, comprise shooting main body 21, distance calibration equipment, controller 22 and manipulation screen 23, referring to figs. 2 to Fig. 5, described shooting main body 21 comprises video camera 31 and illuminating lamp 32, and described shooting main body 21 to stretch in described Spent Fuel Pool and gathers the video image of nuclear fuel assembly 40; The distance calibration that described distance calibration equipment is determined at shooting area setting at least two actual ranges of described video camera.With reference to figure 6, described controller 22 comprises control module 221, graphics processing unit 222 and dimension calculating unit 223, and described control module 221 controls the action of described shooting main body 21 according to shooting control command; Described graphics processing unit 222 receives the video image that described shooting main body 21 gathers, and processes and stores described video image, and the described video image after process is sent to display in manipulation screen 23; Described dimension calculating unit 223 determines the measured zone on described video image according to dimensional measurement signal; Determine two calibration points of the described distance calibration that two actual ranges are determined in described video image; Obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, demarcate distance Lb, image calibration distance Np and image deflects size Nc according to described reality and calculate and store the actual defects size Lc of described measured zone; Described manipulation screen 23 receives the command signal of outside input, and is sent in described controller 22 by the command signal that outside inputs, and described command signal comprises dimensional measurement signal and shooting control command, shows the video image of input in described controller 22.Wherein, described video camera 31 is Underwater Optical conduit height radiation-resistant photographing device or high radiation hardness CMOS camera head under water.
Preferably, continue with reference to figure 4 and Fig. 5, described shooting main body 21 also comprises two-dimentional motor 33, and described two-dimentional motor 33 regulates the shooting angle of described video camera 31 and controls described illuminating lamp 32 and works.
Referring to figs. 2 and 3, describe and use nuclear fuel assembly video detecting device 200 of the present invention to carry out the method for nuclear fuel assembly video detection: (a) to utilize in Spent Fuel Pool auxiliary hangs 41 crawl nuclear fuel assemblies 40 and nuclear fuel assembly 40 is hung on the appropriate location in described Spent Fuel Pool; B shooting main body 21 is fixed on the predeterminated position in described Spent Fuel Pool by (), be greater than to make the video area of described shooting main body 21 lateral separation that described nuclear fuel assembly 40 is detected face; C () is from each detection faces of nuclear fuel assembly 40 described in the threshold marker of described nuclear fuel assembly 40 and nuclear fuel rod; D () adjusts the position of described nuclear fuel assembly 40 to make a certain detection faces of described nuclear fuel assembly 40 towards the camera lens of described video camera 31; In described step (d), testing staff's input in manipulation screen 23 is made a video recording control command accordingly, to control to control the action of two-dimentional motor 33 while video camera 31 and illuminating lamp 32 are opened, two dimension motor driving video camera 31 carries out position and shooting angle regulates, to make a certain detection faces of described controller core fuel assembly 40 towards the camera lens of described video camera 31.Now, video camera 31 gathers video image, controller 22 processes, control manipulation screen 23 while storing described video image and show described video image, testing staff is by manipulating the video image of screen 23 observing nuclear fuel assembly 40 and opening dimensional measurement detection procedure, testing staff determines measured zone on the video images by manipulation screen 23, namely dimensional measurement signal is inputted, two calibration points that in video image, actual range is determined determined by controller 22, obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, distance Lb is demarcated according to described reality, image calibration distance Np and image deflects size Nc calculates and stores the actual defects size Lc of described measured zone.Whether what testing staff judged nuclear fuel assembly 40 according to actual defects size Lc has fault, and the position adjusting described nuclear fuel assembly is to make the camera lens of next detection faces towards described video camera of described nuclear fuel assembly, and repeat above-mentioned dimensional measurement detection procedure with the situation detecting this detection faces of nuclear fuel assembly to judge nuclear fuel assembly 40 whether fault, until complete the detection of described each detection faces of nuclear fuel assembly 40.
Compared with prior art, nuclear fuel assembly video detecting device 200 of the present invention not only can observe state of appearance and the surface appearance of nuclear fuel assembly 40 by video image, the physical size of measured zone in video image can also be calculated, judge the degree whether nuclear fuel assembly 40 is out of shape and is out of shape to judge that precision is high by the actual defects size Lc of measured zone.Wherein, described measured zone can be the region, a face that operating personnel select, also can a line region selecting of operating personnel, and image deflects size refers to the length of measured zone, width or path length.
Particularly, described controller 22 calculates the physical size D of each pixel on video image according to formula D=Lb/Np, calculates described actual defects size Lc according to formula Lc=Nc*D.
Preferably, with reference to figure 5, described distance calibration equipment comprises laser calibration equipment 34, described laser calibration equipment 34 comprises two laser source 341, lasing light emitter 341 described in two sends distance and determines and the distance calibration determined to arrange two actual ranges at the shooting area of described video detecting device of two parallel laser spots to the measured face of described nuclear fuel assembly 40, described controller 22 extracts the spot center of laser spots described in two to obtain calibration point described in two in described video image.Particularly, described controller 22 extracts the spot center of laser spots described in two according to grey scale centre of gravity method.
Wherein, conveniently two-dimentional motor adjusting angle, described laser calibration equipment 34 and illuminating lamp are fixed with video camera 31 respectively.
Better person, described laser calibration equipment 34 calculate lasing light emitter 341 described in two in described laser calibration equipment 34 respectively with laser distance L1, L2 of described nuclear fuel assembly 40, described controller 22 corrects described actual defects size Lc according to described laser distance L1, L2.
Referring to figs. 2 to Fig. 4, in the present embodiment, described nuclear fuel assembly video detecting device 200 also comprises fixed mount 212 and stock 213, described fixed mount 212 is connected with one end of described stock 213 and is fixed on the pool wall 42 of Spent Fuel Pool, the other end of described stock 213 stretches into described Spent Fuel Pool and fixing described shooting main body 21, and described shooting main body 21 gathers described video image.During work, first fixed mount 212 is filled the appropriate location of Spent Fuel Pool, be then connected on fixed mount 212 by the stock being fixed with shooting main body 21, main body 21 of now making a video recording stretches into described Spent Fuel Pool.
With reference to figs. 2 and 7, be different from above-described embodiment, in another embodiment, described distance calibration equipment comprises demarcates card 215, described demarcate card be arranged at shooting main body shooting area in and be arranged in parallel with the measured face of described nuclear fuel assembly, and described demarcation card 215 has the distance calibration that at least two actual ranges determine, described command signal comprises demarcation command signal, and described controller 22 determines two calibration points according to the demarcation card region of described demarcation command signal in described video image.Wherein, described demarcation card 215 is the rectangular card be made up of several chequered with black and white square area.During work, testing staff, by manipulation screen observation video image, comprises the image demarcating card 215 in video image, and operating personnel demarcate with selected on manipulation screen the calibration point that in card 215, two distances are determined by the corresponding command signal of demarcating of manipulation screen input.
With reference to figure 1, Fig. 2 to Fig. 5, the invention discloses a kind of nuclear fuel assembly video detecting method 100, comprise the following steps: (1a) arranges the distance calibration that at least two actual ranges are determined in the shooting area of shooting main body 21, (11) use shooting main body 21 to gather the video image of nuclear fuel assembly 40, described shooting main body 21 comprises video camera 31 and illuminating lamp 32; (12) process, show and store described video image, (13) accept the dimensional measurement signal of outside input and determine the measured zone on described video image according to described dimensional measurement signal, determining two calibration points of the described distance calibration that two actual ranges are determined in described video image; (14) size of described measured zone is calculated, the method calculating described measured zone size comprises: obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, (15) are demarcated distance Lb, image calibration distance Np and image deflects size Nc according to described reality and are calculated and store the actual defects size Lc of described measured zone.Compared with prior art, the present invention not only can observe state of appearance and the surface appearance of nuclear fuel assembly by video image, the physical size of measured zone in video image can also be calculated, judge by the actual defects size Lc of measured zone the degree whether nuclear fuel assembly is out of shape and is out of shape, judge that precision is high.
Wherein, in the present embodiment, the concrete steps calculating described actual defects size Lc comprise: the physical size D calculating each pixel on video image according to formula D=Lb/Np, calculate described actual defects size Lc according to formula Lc=Nc*D.
With reference to figure 5, in the present embodiment, use laser calibration equipment 34 to send distance to the measured face of described nuclear fuel assembly to determine and the distance calibration determined to arrange two actual ranges at the shooting area of described video detecting device of two parallel laser spots, determine in described step (12) that described in two, the method for calibration point comprises: the spot center extracting laser spots described in two in described video image, to obtain calibration point described in two.The program using the laser spots of two parallel laser source directive nuclear fuel assemblies as distance calibration, be convenient to the determination to calibration point in video image, by extracting the spot center of laser spots described in two to obtain calibration point described in two in described video image, effectively ensure that measuring accuracy.Wherein, extract the spot center of laser spots described in two in the present embodiment according to grey scale centre of gravity method, the Gaussian distribution center of comparable more accurate location spot, determines the position of spot center, reduces the error that hot spot intensity profile asymmetry causes.
Preferably, described step (11) also comprises step (1b) before gathering described video image: regulate the irradiating angle of described laser calibration equipment 34 to make described lasing light emitter 341 vertical sand shooting to measured of described nuclear fuel assembly 40.
Preferably, described step also comprises in (13), calculate lasing light emitter 341 described in two in described laser calibration equipment respectively with laser distance L1, L2 of described nuclear fuel assembly, correct described actual defects size Lc according to described laser distance L1, L2.Wherein, first calculate the angle of the detected face of described nuclear fuel assembly 40 and the shooting direction of video camera 31, then correct actual defects size Lc according to this angle, reduce the metrical error because shooting angle is not just causing.
Wherein, also comprise before described step (11): (a) utilizes auxiliary the hanging in Spent Fuel Pool to capture nuclear fuel assembly and the appropriate location hung on by nuclear fuel assembly in described Spent Fuel Pool; B shooting main body is fixed on the predeterminated position in described Spent Fuel Pool by (), be greater than to make the video area of described shooting main body the lateral separation that described nuclear fuel assembly is detected face; C () is from each detection faces of nuclear fuel assembly described in the threshold marker of described nuclear fuel assembly and nuclear fuel rod; D () adjusts the position of described nuclear fuel assembly to make the camera lens of a certain detection faces towards described video camera of described nuclear fuel assembly; Also comprise after described step (15): adjust the position of described nuclear fuel assembly to make the camera lens of next detection faces towards described video camera of described nuclear fuel assembly, and repeat step (11)-(15), until complete the detection of described each detection faces of nuclear fuel assembly.
With reference to figs. 2 and 7, be different from above-described embodiment, in another embodiment, the method arranging distance calibration is, the demarcation card 215 parallel with measured of described nuclear fuel assembly 40 is placed in the shooting area of shooting main body 21, the structure of described demarcation card 215 as shown in Figure 7, which is provided with the distance calibration that at least two actual ranges are determined, determine in described step (13) that described in two, the method for calibration point comprises: the demarcation command signal accepting outside input, determine two calibration points according to the demarcation card region of described demarcation command signal in described video image.During work, testing staff, by manipulation screen observation video image, comprises the image demarcating card 215 in video image, and operating personnel demarcate with selected on manipulation screen the calibration point that in card 215, two distances are determined by the corresponding command signal of demarcating of manipulation screen input.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (16)
1. a nuclear fuel assembly video detecting method, is characterized in that, comprises the following steps:
(1) in the shooting area of shooting main body, arrange the distance calibration that at least two actual ranges are determined, use shooting main body to gather the video image of nuclear fuel assembly, described shooting main body comprises video camera and illuminating lamp;
(2) process, show and store described video image, determine the calibration point of the described distance calibration that two actual ranges are determined in described video image, accept the dimensional measurement signal of outside input and determine the measured zone on described video image according to described dimensional measurement signal;
(3) size of described measured zone is calculated, specifically comprise: obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, demarcate distance Lb, image calibration distance Np and image deflects size Nc according to described reality and calculate and store the actual defects size Lc of described measured zone.
2. nuclear fuel assembly video detecting method as claimed in claim 1, it is characterized in that, the method arranging distance calibration is that card is demarcated in parallel placement one on measured of described nuclear fuel assembly, described demarcation card is provided with the distance calibration that at least two actual ranges are determined, determine in described step (2) that described in two, the method for calibration point comprises: the demarcation command signal accepting outside input, determine two calibration points according to the demarcation card region of described demarcation command signal in described video image.
3. nuclear fuel assembly video detecting method as claimed in claim 1, it is characterized in that, the step arranging distance calibration comprises: use laser calibration equipment to send distance to the measured face of described nuclear fuel assembly and determine and the distance calibration determined to arrange two actual ranges of two parallel laser spots, determine in described step (2) that described in two, the method for calibration point comprises: the spot center extracting laser spots described in two in described video image, to obtain calibration point described in two.
4. nuclear fuel assembly video detecting method as claimed in claim 3, is characterized in that, extracts the spot center of laser spots described in two according to grey scale centre of gravity method.
5. nuclear fuel assembly video detecting method as claimed in claim 3, it is characterized in that, described step (1) also comprises before gathering described video image: regulate the irradiating angle of described laser calibration equipment to make described lasing light emitter vertical sand shooting to measured of described nuclear fuel assembly.
6. nuclear fuel assembly video detecting method as claimed in claim 3, it is characterized in that, described laser calibration equipment and described video camera are fixed together, described step also comprises in (3), calculate lasing light emitter described in two in described laser calibration equipment respectively with laser distance L1, L2 of described nuclear fuel assembly, correct described actual defects size Lc according to described laser distance L1, L2.
7. nuclear fuel assembly video detecting method as claimed in claim 1, is characterized in that, also comprises before described step (1):
A () utilizes auxiliary the hanging in Spent Fuel Pool to capture nuclear fuel assembly and the appropriate location hung on by nuclear fuel assembly in described Spent Fuel Pool;
B shooting main body is fixed on the predeterminated position in described Spent Fuel Pool by (), be greater than to make the video area of described shooting main body the lateral separation that described nuclear fuel assembly is detected face;
C () is from each detection faces of nuclear fuel assembly described in the threshold marker of described nuclear fuel assembly and nuclear fuel rod;
D () adjusts the position of described nuclear fuel assembly to make a certain detection faces of described nuclear fuel assembly towards described camera lens;
Also comprise after described step (3): adjust the position of described nuclear fuel assembly with the shooting area making next detection faces of described nuclear fuel assembly be positioned at described shooting main body, and repeat step (1)-(3), until complete the detection of described each detection faces of nuclear fuel assembly.
8. nuclear fuel assembly video detecting method as claimed in claim 1, it is characterized in that, described shooting main body also comprises two-dimentional motor, and described two-dimentional motor regulates the shooting angle of described video camera and controls described illuminating lamp work.
9. nuclear fuel assembly video detecting method as claimed in claim 1, it is characterized in that, the concrete steps calculating described actual defects size Lc in described step (3) comprise: the physical size D calculating each pixel on video image according to formula D=Lb/Np, calculate described actual defects size Lc according to formula Lc=Nc*D.
10. a nuclear fuel assembly video detecting device, is characterized in that, comprising:
Shooting main body, comprises video camera and illuminating lamp, and described shooting main body to stretch in described Spent Fuel Pool and gathers the video image of nuclear fuel assembly;
Distance calibration equipment, at the distance calibration that shooting area setting at least two actual ranges of described video camera are determined;
Controller, comprising:
Control module, controls the action of described shooting main body according to shooting control command;
Graphics processing unit, receives the video image that described shooting main body gathers, processes and store described video image, and the described video image after process is sent to display in manipulation screen;
Dimension calculating unit, determines the measured zone on described video image according to dimensional measurement signal; Determine two calibration points of the described distance calibration that two actual ranges are determined in described video image; Obtain the actual demarcation distance Lb between calibration point described in two, calculate the image calibration distance Np in described video image described in two between calibration point, calculate the image deflects size Nc of described measured zone in described video image, demarcate distance Lb, image calibration distance Np and image deflects size Nc according to described reality and calculate and store the actual defects size Lc of described measured zone;
Manipulation screen, receives the command signal of outside input and the command signal that outside inputs is sent in described controller, showing the video image of input in described controller, and described command signal comprises dimensional measurement signal and shooting control command.
11. nuclear fuel assembly video detecting devices as claimed in claim 10, it is characterized in that, described distance calibration equipment comprises demarcates card, described demarcate card be arranged at shooting main body shooting area in and be arranged in parallel with the measured face of described nuclear fuel assembly, and described demarcation blocks the distance calibration having at least two actual ranges and determine, described command signal comprises demarcation command signal, and described controller determines two calibration points according to the demarcation card region of described demarcation command signal in described video image.
12. nuclear fuel assembly video detecting devices as claimed in claim 10, it is characterized in that, described distance calibration equipment comprises laser calibration equipment, described laser calibration equipment comprises two laser source, lasing light emitter described in two sends distance and determines and the distance calibration determined to arrange two actual ranges of two parallel laser spots to the measured face of described nuclear fuel assembly, described controller extracts the spot center of laser spots described in two to obtain calibration point described in two in described video image.
13. nuclear fuel assembly video detecting devices as claimed in claim 12, is characterized in that, described controller extracts the spot center of laser spots described in two according to grey scale centre of gravity method.
14. nuclear fuel assembly video detecting devices as claimed in claim 12, it is characterized in that, described laser calibration equipment and described video camera are fixed together, and described shooting main body also comprises two-dimentional motor, and described two-dimentional motor regulates the shooting angle of described video camera and controls described illuminating lamp work.
15. nuclear fuel assembly video detecting devices as claimed in claim 12, it is characterized in that, described laser calibration equipment and described video camera are fixed together, described laser calibration equipment calculate lasing light emitter described in two in described laser calibration equipment respectively with laser distance L1, L2 of described nuclear fuel assembly, described controller corrects described actual defects size Lc according to described laser distance L1, L2.
16. nuclear fuel assembly video detecting devices as claimed in claim 10, is characterized in that, described controller calculates the physical size D of each pixel on video image according to formula D=Lb/Np, calculate described actual defects size Lc according to formula Lc=Nc*D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510386099.8A CN105006261B (en) | 2015-07-03 | 2015-07-03 | Nuclear fuel assembly video detecting method and detection means |
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| CN106803433A (en) * | 2017-02-27 | 2017-06-06 | 中国核动力研究设计院 | One kind irradiates post fuel component bending morpheme measuring method under water |
| CN107063101A (en) * | 2017-05-31 | 2017-08-18 | 中广核研究院有限公司 | Irradiated fuel assembly measurement apparatus and measuring method |
| CN107170499A (en) * | 2017-05-31 | 2017-09-15 | 岭澳核电有限公司 | A kind of nuclear fuel detection means and method |
| CN107221364A (en) * | 2017-05-31 | 2017-09-29 | 岭澳核电有限公司 | Nuclear fuel assembly underwater test platform and method of testing |
| CN108766606A (en) * | 2018-06-01 | 2018-11-06 | 中广核核电运营有限公司 | Nuclear power plant's burnable poison assembly switches tool with Neutron source assembly |
| CN108759664A (en) * | 2018-05-22 | 2018-11-06 | 湖南瑞智健科技有限公司 | A kind of nuclear fuel rod size detecting method and system based on telecentric optics |
| CN109660758A (en) * | 2018-11-26 | 2019-04-19 | 中广核核电运营有限公司 | A kind of nuclear power station reactor core underwater wireless high definition photographic means and system |
| CN111102923A (en) * | 2019-12-31 | 2020-05-05 | 核动力运行研究所 | Method for positioning penetrating piece of top cover of reactor pressure vessel |
| 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 |
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| CN108766606A (en) * | 2018-06-01 | 2018-11-06 | 中广核核电运营有限公司 | Nuclear power plant's burnable poison assembly switches tool with Neutron source assembly |
| CN108766606B (en) * | 2018-06-01 | 2020-08-14 | 中广核核电运营有限公司 | Burnable poison assembly and neutron source assembly switching tool for nuclear power plant |
| CN109660758A (en) * | 2018-11-26 | 2019-04-19 | 中广核核电运营有限公司 | A kind of nuclear power station reactor core underwater wireless high definition photographic means and system |
| CN109660758B (en) * | 2018-11-26 | 2020-10-13 | 中广核核电运营有限公司 | Underwater wireless high-definition photographing device and system for nuclear power station reactor core |
| CN111102923A (en) * | 2019-12-31 | 2020-05-05 | 核动力运行研究所 | Method for positioning penetrating piece of top cover of reactor pressure vessel |
| 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 |
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