CN107274941A - The apparatus and method that scene is measured to intensive tube bundle diameter and oxide thickness - Google Patents
The apparatus and method that scene is measured to intensive tube bundle diameter and oxide thickness Download PDFInfo
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- CN107274941A CN107274941A CN201710486398.8A CN201710486398A CN107274941A CN 107274941 A CN107274941 A CN 107274941A CN 201710486398 A CN201710486398 A CN 201710486398A CN 107274941 A CN107274941 A CN 107274941A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
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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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Abstract
The invention discloses the apparatus and method that a kind of scene is measured to intensive tube bundle diameter and oxide thickness, including several rod footpath measuring units and several oxide thickness measuring units on measurement stand, rod footpath measuring unit is arranged in same level, oxide thickness measuring unit is arranged in same level, the passage passed through for sample pipe is provided with inside the measuring unit of each rod footpath and inside each oxide thickness measuring unit, and the passage of the passage correspondence and one of oxide thickness measuring unit of each rod footpath measuring unit is coaxial.The present invention can directly carry out the accurate measurement of total travel optional position to intensive tube bundle diameter and oxide thickness at the scene by the way that intensive tube bundle is classified；In measurement process without direct body contact, it is measured by sensor to the minor variations of diameter and oxide thickness, is detected more safe efficient, reliable；When a certain measuring unit breaks down, it still can complete to measure work.
Description
Technical field
The invention belongs to nuclear industry detection technique field, and in particular to a kind of scene is to intensive tube bundle diameter and thickness of oxidation film
Spend the apparatus and method measured.
Background technology
During certain fuel rod material development, the Zirconium alloy material of different model is prepared into similar to burnable poison
Irradiation Test is carried out in sample tube bank insertion fuel assembly, it is necessary to measure after sample tube bank irradiation after several test circulations
The minor variations of the minor variations of size, such as diameter and oxide thickness.
Sample tube bank is made up of test sample pipe elongated 16 3m and some stubs, and only upper end relative position is fixed, cloth
Put more intensive, and lower end is free, in water as windbell, carries out the dimensional measurement of total travel optional position to it under water, it is difficult
Degree is huge.At present, the detection means for not yet having maturation can carry out the diameter and oxide thickness of sample tube bank in Spent Fuel Pool
Measurement.
The content of the invention
When the technical problems to be solved by the invention are that existing scene is measured for intensive tube bundle diameter and oxide thickness
The dimensional measurement of total travel optional position is difficult to, the error of measurement is big, its object is to provide a kind of scene to intensive tube bundle
The apparatus and method that diameter and oxide thickness are measured, the apparatus and method can be at the scene to intensive tube bundle diameter and oxygen
Change the accurate measurement that film thickness carries out total travel optional position, and measure efficient, safe and reliable.
The present invention is achieved through the following technical solutions：
The device that is measured to intensive tube bundle diameter and oxide thickness of scene, including several on measurement stand
Rod footpath measuring unit and several oxide thickness measuring units, rod footpath measuring unit are arranged in same level,
Oxide thickness measuring unit is arranged in same level, is surveyed inside the measuring unit of each rod footpath with each oxide thickness
The passage passed through for sample pipe, and passage correspondence and the one of oxidation of each rod footpath measuring unit are provided with inside amount unit
The passage of film thickness measuring unit is coaxial.In nuclear power plant, sample is restrained after recycling, the thickness of its diameter and oxide-film
Degree can produce change, it is necessary to which these measure of the changes are come out, if it disassembled completely, be sent in laboratory individually to every
Root sample pipe is measured, and by advanced measuring instrument and means, can realize the accurate measurement of total travel optional position, still
Whole process is cumbersome, and sample pipe is dismounted, and causes the stand-by period long, and disassembly process even can cause sample pipe institute
The environmental change at place and make it that measurement result is affected, while sample pipe is in itself again with high radioactivity, harm to the human body is big,
Special transport is needed, is bothered very much.Therefore be preferably able at the scene directly measure sample pipe, and scene sample restrain by
Test sample pipe and some stubs elongated 16 3m is constituted, and only upper end relative position is fixed, and arranges more intensive, adjacent sample
The distance between pipe is small, and measuring instrument cannot be introduced into wherein, and the lower end of sample pipe is free, in water as windbell with
Current shifting, easily produces collision after measuring instrument insertion, can not be carried out accurately while the sample pipe rocked also results in measuring apparatus
Measurement, existing measurement structure and method can not carry out the dimensional measurement of total travel optional position, the difficulty of measurement to it under water
Greatly, error is big.This programme then can solve the problem that above mentioned problem, and it is restrained according to intensive sample at the scene by designing unique structure
Arrangement position, form corresponding arrangement relation, the sample pipe of single area can disposably be accommodated and fixed, recycle and install
Rod footpath measuring unit and oxide thickness measuring unit on measurement stand, realize the diameter and oxygen of the sample tube bank to the region
Change the accurate measurement that film thickness carries out total travel optional position, due to being that sample tube bank has been carried out into fixed and measure batch, make
What must be measured is more efficient, while being also not required to dismantle sample pipe, and is fixed between sample pipe, it will not produce and rock,
Simultaneously without artificial contact, measurement process is safer, measures obtained data relatively reliable.
Measurement stand is that, for the fixed structure to whole measurement apparatus, measurement stand includes positioning pipe, main supporting plate, rod
Footpath measuring unit location-plate, oxide-film measuring unit location-plate and gripping apparatus location-plate, top and the main supporting plate of positioning pipe are fixed,
Rod footpath measuring unit location-plate, oxide-film measuring unit location-plate and gripping apparatus location-plate are successively set on main supporting plate from bottom to up
Top and be fixed to one another, rod footpath measuring unit be arranged at rod footpath measuring unit location-plate and oxide-film measuring unit location-plate it
Between and fixed with rod footpath measuring unit, it is fixed that oxide thickness measuring unit is arranged at oxide-film measuring unit location-plate and gripping apparatus
Fix between the plate of position and with oxide-film measuring unit location-plate.So that keep stable in whole measurement process, will not be due to water
The frictional force that produces or other contact forces when stream or equipment movement and cause measuring unit to move, influence measurement knot
Really.Main supporting plate is placed on spentnuclear fuel screen work upper end when working, carry the weight of measurement apparatus.
Rod footpath measuring unit includes mounting seat, and mounting seat is fixed in the measuring unit of rod footpath, is provided with and leads in mounting seat
To bar one, movable block one and movable block two are cased with guide rod one, and movable block one and movable block two can be in guide rods one
On moved along the axis direction of guide rod one, be also cased with spring one on guide rod one, spring one is arranged on movable block one or shifting
Between motion block two and mounting seat inwall, and spring one can be flexible along the axis direction of guide rod one on guide rod one, moves
Measurement seat in rod footpath is provided between motion block one and movable block two, rod footpath measurement seat is fixed through mounting seat and with mounting seat, is oriented to
The quantity of bar one is preferably two and is parallel to each other, and rod footpath measurement seat is arranged between guide rod one, and measurement seat direction in rod footpath is moved
The outer wall of motion block one and movable block two is recessed breach, and breach is connected with the inner chamber that rod footpath measures seat, is respectively provided with breach
There is contact rod, contact rod is fixed with corresponding movable block one or movable block two, is provided with movable block one or movable block two respectively
Displacement transducer.Rod footpath measuring unit is used for the rod footpath for measuring single point, and rod footpath measurement seat has to movable block one and movable block two
Position limitation is acted on, and prevents movable block one and movable block two from leaning on closely to cause fuel rod not insert very much.Operationally, fuel rod
Corresponding rod footpath measuring unit is inserted, contact rod is strutted, further makes movable block one and the movement of movable block two, and drive small
The movement of displacement transducer, so as to be measured to rod footpath.Displacement transducer is existing structure, for being shown to micro-displacement
Show, its accuracy is high, can buy on the market.
Oxide thickness measuring unit be contact type structure, provided with horizontal direction move self-adaption two-dimensional mobile platform,
Oxide thickness measuring unit includes bottom oxide film thickness measure seat, and bottom oxide film thickness measure seat is measured with oxide-film
Cell location plate is fixed, and is provided with bottom oxide film thickness measure seat on guide rod two, guide rod two and is cased with spring two and upper
Portion's oxide thickness measurement seat, spring two is arranged on upper oxide film thickness measurement seat and bottom oxide film thickness measure seat inwall
Between, and upper oxide film thickness measurement seat can move along the axis of guide rod two on guide rod two, spring two can
Stretched on guide rod two along the axis of guide rod two, so constitute X to adaptive mobile platform；Upper oxide film thickness is surveyed
It is provided with amount seat on guide rod three, guide rod three while being cased with spring three, movable block three and movable block four, spring three is arranged on
Between movable block three or movable block four and upper oxide film thickness measurement seat inwall, and movable block three and movable block four can be
Moved on guide rod three along the axis direction of guide rod three, spring three can on guide rod three along guide rod three axis
Direction is stretched, and the axis of guide rod three and the axis of guide rod two are vertical, so constitute Y-direction adaptive platform, movable block three
Oxide thickness measurement seat is provided between movable block four, and oxide thickness measures seat and measured through upper oxide film thickness
Seat is simultaneously fixed with upper oxide film thickness measurement seat, and the quantity of guide rod three is preferably two and is parallel to each other, oxide thickness
Measurement seat is arranged between guide rod three, and oxide thickness measures the equal concave shaped of wall of seat towards movable block three and movable block four
Into mounting groove, and the inner chamber that mounting groove measures seat with oxide thickness connect, and oxide thickness is provided with movable block three and is surveyed
Quantity sensor, one end of oxide thickness measurement sensor is inserted into towards in the mounting groove of movable block three, is pacified on movable block four
Equipped with directive wheel, and directive wheel can be rotated along axis, and the wheel face of directive wheel is arranged on towards in the mounting groove of movable block four.
Sample pipe can not be rotated during due to in-site measurement, during work, fuel rod insertion oxide thickness measuring unit, in the effect of directive wheel
Under, by the adjustment of self-adaption two-dimensional mobile platform, fuel rod is in the center of oxide thickness measurement sensor, realizes in list
The thickness measure of a bit.Oxide thickness measurement sensor is micro-displacement sensor, for being shown to micro-displacement state
Show, its accuracy is high, can buy on the market.
In order to realize the positioning of main supporting plate, rod footpath measuring unit location-plate, oxide-film measuring unit location-plate and gripping apparatus
Plate is fixed, and some alignment pins are provided with main supporting plate, due to main supporting plate, rod footpath measuring unit location-plate, oxygen
It is in quadrangle to change film measuring unit location-plate and gripping apparatus location-plate profile, so alignment pin is preferably four, it is correspondingly arranged at
At four angles, and every alignment pin is positioned also cross main supporting plate, rod footpath measuring unit location-plate, oxide-film measuring unit
Plate and gripping apparatus location-plate.
Four positioning holes are set on gripping apparatus location-plate, and positioning hole is separately positioned at four angles of gripping apparatus location-plate, positioned
Hole is the positioning for gripping apparatus.
In order to be monitored to measurement process, there is provided camera, the quantity of camera is preferably two, all using high definition
Camera so that Detection results are more preferable.Camera is all horizontally disposed with, for monitoring whole measurement process, each camera
It is respectively used to shoot rod footpath measuring unit and oxide thickness measuring unit.
The method that scene is measured to intensive tube bundle diameter and oxide thickness, comprises the following steps：
（1）Detection means is hung in into Spent Fuel Pool, positioning pipe is inserted in spent fuel storage rack component holes, main supporting plate is put
In on spent fuel storage rack；
（2）Sample tube bank will be irradiated using gripping apparatus to catch from component, is moved to above measurement stand, adjustment inserts locating bar after
In the gripping apparatus location-plate for entering to measure stand, and carry out mark；
（3）Manipulating grab will irradiate sample tube bank insertion measurement stand, when rod footpath measuring unit into data occurs, record grabbing now
The Z-direction coordinate of tool；
（4）On the basis of Z-direction coordinate in step 3, driving gripping apparatus carries out plunger, and 8 Irradiation Test sample pipes can be carried out simultaneously and are erected
Measured to total travel optional position rod footpath and oxide thickness；
（5）After 8 Irradiation Test sample pipes are measured, the tube bank of Irradiation Test sample is proposed into measurement stand, and according to step 2
Mark turn clockwise 90o, repeat step two to step 4 completes rod footpath and the oxidation of remaining 8 Irradiation Test samples tube bank
Film thickness is measured.
The present invention by above-mentioned measuring method, can at the scene directly to high radioactivity intensive tube bundle under water carry out diameter and
Oxide thickness is measured, in whole measurement process, collisionless and position is fixed between sample pipe, by contact type measurement,
Beforehand through insertion par established standardses value, diameter and thickness are measured using sensor, obtain accurately measuring number
Value, in whole measurement process, because sample tube bank can not be rotated, the point measured by it is from the point of view of the whole stroke of sample pipe, all
It is the measurement of any vertical position of total travel, whole measurement process prevents radiation injury without direct body contact, simultaneously because
Direct measurement is carried out at the scene, is not required to dismantle sample pipe, and in the measurement of batch, substantially increases measurement efficiency, people
Need to only be needed to realize measurement to different vertical positions according to measurement, accurately counted according to the signal of sensor feedback
Value, meets demand, whole measurement result is reliable.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention directly can be entered to intensive tube bundle diameter and oxide thickness at the scene by the way that intensive tube bundle is classified
The accurate measurement of row total travel optional position；
2nd, the present invention is in measurement process without direct body contact, and it passes through minor variations of the sensor to diameter and oxide thickness
Measure, detect more safe efficient, reliable；
3rd, when the present invention has taken into full account that a certain measuring unit breaks down, it still can complete to measure work.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structural representation of rod footpath measuring unit；
Fig. 3 is the structural representation of oxide-film measuring unit；
Fig. 4 is oxide-film measuring unit layout；
Fig. 5 is instrumentation plan when fuel rod is inserted.
Mark and corresponding parts title in accompanying drawing：
1- cameras one, 2- alignment pins, 3- oxide-film measuring unit location-plates, 4- cameras two, 5- main supporting plates, 6- positioning
Pipe, 7- hangers, 8- rods footpath measuring unit location-plate, 9- gripping apparatus location-plates, 10- irradiation sample tube banks, 11- displacement transducers, 12- bullets
Spring one, 13- contact rods, 14- rods footpath measurement seat, 15- oxide thickness measurement sensors, 16- movable blocks three, 17- thickness of oxidation film
Degree measurement seat, 18- directive wheels, 19- upper oxides film thickness measurement seat, 20- movable blocks four, 21- bottom oxide film thickness measures
Seat, 22- springs three, 23- guide rods three, 24- guide rods one, 25- mounting seats, 26- movable blocks one, 27- movable blocks two.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment 1：
As shown in Figures 1 to 5, the present invention relates to nuclear power plant and research reactor irradiation after at the scene to the intensive sample pipe of high radioactivity
Diameter and oxide thickness measurement apparatus and method, irradiation sample tube bank are made up of 16 irradiation sample pipes, layout corresponding diagram 4 periphery 16
Individual position, the present embodiment carries out rod footpath and oxide thickness measurement for 16 irradiation sample pipes.Its hardware configuration includes being arranged on
The 8 rod footpath measuring units and 8 oxide thickness measuring units on stand are measured, can corresponding to the structure of irradiation sample tube bank
To be adjusted according to the structure of irradiation tube bank, wherein rod footpath measuring unit is arranged in same level, oxide thickness
Measuring unit is arranged in same level, and oxide thickness measuring unit is arranged on above the measuring unit of rod footpath, each rod
It is provided with inside the measuring unit of footpath and inside each oxide thickness measuring unit the passage passed through for sample pipe, and each rod footpath
The passage of the passage correspondence and one of oxide thickness measuring unit of measuring unit is coaxial, i.e., when measuring, every
Sample Guan Bineng inserts an insertion oxide thickness measuring unit and rod footpath measuring unit simultaneously, and each oxide thickness measurement is single
Member correspondence is supporting in groups with a rod footpath measuring unit.
And measure stand and determine including positioning pipe 6, main supporting plate 5, rod footpath measuring unit location-plate 8, oxide-film measuring unit
Position plate 3 and gripping apparatus location-plate 9, top and the main supporting plate 5 of positioning pipe 6 are fixed, and positioning pipe 6 is to be used to sample pipe is carried out to position admittedly
Fixed device, wherein rod footpath measuring unit location-plate 8, oxide-film measuring unit location-plate 3 and gripping apparatus location-plate 9 are arranged at master
The top of supporting plate 5, rod footpath measuring unit location-plate 8 and oxide-film measuring unit location-plate 3 are arranged on gripping apparatus location-plate 9 and main branch
Between fagging 5, rod footpath measuring unit location-plate 8 is arranged between oxide-film measuring unit location-plate 3 and main supporting plate 5, main branch
It is respectively arranged with 5 four angles of fagging on hanger 7, main supporting plate 5 and is provided with four alignment pins 2, and every alignment pin 2 is simultaneously
It is fixed through main supporting plate 5, rod footpath measuring unit location-plate 8, oxide-film measuring unit location-plate 3 and gripping apparatus location-plate 9.
Four positioning holes are set also on gripping apparatus location-plate 9, and positioning hole is separately positioned at four angles of gripping apparatus location-plate 9 to be used to grab
The positioning of tool.And rod footpath measuring unit is arranged between rod footpath measuring unit location-plate 8 and oxide-film measuring unit location-plate 3
And fixed with rod footpath measuring unit, oxide thickness measuring unit is arranged at oxide-film measuring unit location-plate 3 and gripping apparatus is fixed
Fix between the plate 9 of position and with oxide-film measuring unit location-plate 3.In order to realize the monitoring to whole measurement process, there is provided two
Individual camera, is respectively designated as camera 1 and camera 24, and camera 1 and camera 24 are horizontally disposed with, camera
One 1 are used to shoot the measurement process of oxide thickness measuring unit, and camera 24 is used for the survey to rod footpath measuring unit
Amount process is shot.
And rod footpath measuring unit includes mounting seat 25, mounting seat 25 is fixed in rod footpath measuring unit 8, in order that must tie
Structure is compacter, and groove is recessed in the top surface of mounting seat 25, and guide rod 1 is in the groove of mounting seat 25, guide rod 1
On be cased with movable block 1 and movable block 2 27, and movable block 1 and movable block 2 27 can on guide rod 1 along
Spring 1 is also cased with the axis direction movement of guide rod 1, guide rod 1, spring 1 is arranged on movable block 1
Or between movable block 2 27 and the inwall of mounting seat 25, and spring 1 can on guide rod 1 along guide rod 1 axle
Line direction is stretched, and measurement seat 14 in rod footpath is provided between movable block 1 and movable block 2 27, and rod footpath measurement seat 14, which is passed through, to be installed
Seat 25 is simultaneously fixed with mounting seat 25, and the quantity of guide rod 1 is two and is parallel to each other, and can be kept during for ensureing to move
Same straight line, prevents components interior displacement error from causing measurement data to produce error, and rod footpath measurement seat 14 is arranged on guide rod
Between one 24, the outer wall of the measurement of rod footpath seat 14 towards movable block 1 and movable block 2 27 is recessed breach, and breach and rod
The inner chamber connection of footpath measurement seat 14, is provided with contact rod 13 in breach, contact rod 13 respectively with corresponding movable block 1 or
Movable block 2 27 is fixed, and contact rod 13 is the part for being contacted with sample pipe outer wall, and when sample pipe is insertion, spring 1 is in
Normal condition, now contact rod 13 be in breach, i.e., positioned at rod footpath measure seat 14 inner chamber in, when insert sample pipe after, due to
The diameter of sample pipe in itself is more smaller than the internal diameter that rod footpath measures seat 14, if sample pipe diameter does not change, contact rod 13 is squeezed, and moves
Motion block 1 and movable block 2 27 produce movement, its data produced on displacement transducer 11 and standard value one set in advance
Cause, according to the difference of insertion position, with the diameter change of sample pipe, displacement transducer 11 can survey the rod footpath of each position
Measure and, the numerical value of measurement is accurate, and specific calculating process is all existing, is all existing for those skilled in the art.
And oxide thickness measuring unit includes bottom oxide film thickness measure seat 21, bottom oxide film thickness measure seat
21 fix with oxide-film measuring unit location-plate 3, and bottom oxide film thickness measure 21 top surfaces of seat are recessed mounting groove, and two are led
In the mounting groove that bottom oxide film thickness measure seat 21 is arranged on to bar two, spring two and upper oxide film are cased with guide rod two
Thickness measure seat 19, spring two be arranged on upper oxide film thickness measurement seat 19 and bottom oxide film thickness measure seat 21 inwalls it
Between, and upper oxide film thickness measurement seat 19 can move along the axis of guide rod two on guide rod two, spring two can
Stretched on guide rod two along the axis of guide rod two, form X to adaptive adjustment；Upper oxide film thickness measurement seat 19 is pushed up
Face is also recessed mounting groove, and guide rod 3 23 is arranged in the mounting groove in upper oxide film thickness measurement seat 19, formed whole
It is compact on body.Spring 3 22, movable block 3 16 and movable block 4 20 are cased with simultaneously on guide rod 3 23, spring 3 22 is arranged on
Between movable block 3 16 or movable block 4 20 and upper oxide film thickness the measurement inwall of seat 19, and movable block 3 16 and movable block four
20 can move along the axis direction of guide rod 3 23 on guide rod 3 23, and spring 3 22 can be on guide rod 3 23
Stretched along the axis direction of guide rod 3 23, and the axis of guide rod 3 23 and the axis of guide rod two are vertical, movable block three
Oxide thickness measurement seat 17 is provided between 16 and movable block 4 20, and oxide thickness measurement seat 17 passes through upper oxide film
Thickness measure seat 19 is simultaneously fixed with upper oxide film thickness measurement seat 19, and the quantity of guide rod 3 23 is two and is parallel to each other,
Oxide thickness measurement seat 17 is arranged between guide rod 3 23, and oxide thickness measures seat 17 towards movable block 3 16 and movement
The wall of block 4 20 is recessed mounting groove, and the inner chamber that mounting groove measures seat 17 with oxide thickness is connected, movable block
Oxide thickness measurement sensor 15 is installed, one end of oxide thickness measurement sensor 15 is inserted into towards mobile on 3 16
In the mounting groove of block 3 16, directive wheel 18 is installed on movable block 4 20, and directive wheel 18 can be rotated along axis, directive wheel
18 wheel face is arranged on towards in the mounting groove of movable block 4 20.Measured when sample pipe is inserted into oxide thickness in seat 17, with
Sample pipe is snapped onto in the wheel face groove of directive wheel 18, forms clamping and positioning, with the rotation of directive wheel 18, also makes to move sample pipe
Process is oriented to, in this process, and oxide thickness measurement sensor 15 is extruded so that oxide thickness is measured
Sensor 15 produces corresponding displacement, is measured according to displacement data, and its measurement data and the standard value of pre-selection setting are entered
Row contrast, detailed computational methods be all well known to a person skilled in the art.
Rod footpath measuring unit and oxide thickness measuring unit are arranged in rod footpath according to the arrangement of accompanying drawing 4 and surveyed
Measure on cell location plate and oxide thickness measuring unit location-plate.It is laid out more than, can disposably detects 8 fuel rods
Rod footpath and oxide thickness,
The step of its specific measuring method, is as follows：
Step 1: detection means is hung in into Spent Fuel Pool by four hangers 7, positioning pipe 6 is set to insert spent fuel storage rack
In component holes, main supporting plate 5 is placed on spent fuel storage rack.
Step 2: being previously inserted a master bar, measured by rod footpath measuring unit and oxide thickness measuring unit
Numerical value, as standard value, will irradiate sample tube bank using nuclear power plant's burnable poison gripping apparatus and is caught from component, moved on measurement stand
Side, and select suitable direction to measure the locating bar insertion of burnable poison in the gripping apparatus location-plate of stand, and carry out mark；
Step 3: operation burnable poison gripping apparatus will irradiate sample tube bank insertion measurement stand using low or first gear, when rod footpath measuring unit
When appearance data are identical with standard value, then illustrate that now rod footpath is that master bar footpath is identical, the numerical value that now sensor is shown is made
For standard point, the Z-direction coordinate of the burnable poison gripping apparatus of record now is used as starting point；
Step 4: on the basis of Z-direction coordinate in step 3, driving burnable poison gripping apparatus to carry out slow plunger using low or first gear, together
When measuring unit for example accompanying drawing 5 carry out 8 Irradiation Test sample pipe total travel optional position rod footpaths and oxide thickness measurement.
Step 5: after 8 Irradiation Test sample pipes are measured, the tube bank of Irradiation Test sample is proposed into measurement stand, and press
Mark according to step 2 turns clockwise 90o, repeat step two to step 4, completes the rod of remaining 8 Irradiation Test samples tube bank
Footpath and oxide thickness measurement.
By the present embodiment, the problem of sample bundle diameters at random and oxide thickness measurement, energy are efficiently solved
Enough realize in batch at the scene is accurately measured the rod footpath of the intensive tube bundle of high radioactivity under water and oxide thickness,
Whole measurement process is safe without human contact and operation, and measurement process will not produce change because of the disturbance of current
Change, measure obtained data reliable.
Embodiment 2：
As shown in Figures 1 to 5, the present embodiment carries out rod footpath for 16 irradiation sample pipes and oxide thickness is measured, A1B1,
A2B2, A3B3, A4B4 measuring unit backup each other, if a certain measuring unit breaks down, can be by rotary components using standby
Detected with measuring unit, improve measurement efficiency.I.e. when a certain measuring unit breaks down in embodiment 1, measurement is real
Apply as follows：
Step 1: it is same as Example 1, detection means is hung in into Spent Fuel Pool by four hangers 7, positioning pipe 6 is inserted
In spent fuel storage rack component holes, main supporting plate is placed on spent fuel storage rack.
Step 2: it is same as Example 1, a master bar is previously inserted, passes through rod footpath measuring unit and oxide thickness
Measuring unit measures numerical value, as standard value, will irradiate sample tube bank using nuclear power plant's burnable poison gripping apparatus and is caught from component,
Move to above measurement stand, and select suitable towards the gripping apparatus location-plate that the locating bar insertion of burnable poison is measured to stand
In, and carry out mark；
Step 3: same as Example 1, operation burnable poison gripping apparatus will irradiate sample tube bank insertion measurement stand using low or first gear,
When rod footpath measuring unit occur data it is identical with standard value when, then illustrate now rod footpath be master bar footpath it is identical, will now sense
The numerical value that device is shown is used as starting point as standard point, the Z-direction coordinate of the burnable poison gripping apparatus of record now；
Step 4: on the basis of Z-direction coordinate in step 3, driving burnable poison gripping apparatus to carry out slow plunger using low or first gear, together
When measuring unit for example accompanying drawing 5 carry out 7 Irradiation Test sample pipe total travel optional position rod footpaths and oxide thickness measurement.
Step 5: after 7 Irradiation Test sample pipes are measured, the tube bank of Irradiation Test sample is proposed into measurement stand, and press
Mark according to step 2 turns clockwise 90o, and carries out mark, and repeat step two to step 4 completes 7 Irradiation Test sample pipes
The rod footpath of beam and oxide thickness measurement；
Step 6: after 7 Irradiation Test sample pipes are measured, the tube bank of Irradiation Test sample is proposed into measurement stand, and according to step
Rapid five mark turns clockwise 90o, and carries out mark, and repeat step two to step 4 completes unmeasured 1 Irradiation Test
The rod footpath of sample tube bank and oxide thickness measurement；
Step 7: after the Irradiation Test sample pipe in step 6 is measured, the tube bank of Irradiation Test sample is proposed into measurement stand, and
Mark according to step 6 turns clockwise 90o, and repeat step two completes the unmeasured Irradiation Test of last root to step 4
The rod footpath of sample tube bank and oxide thickness measurement.
By the present embodiment, the problem of sample bundle diameters at random and oxide thickness measurement, energy are efficiently solved
Enough realize in batch at the scene is accurately measured the rod footpath of the intensive tube bundle of high radioactivity under water and oxide thickness,
Whole measurement process is safe without human contact and operation, and measurement process will not produce change because of the disturbance of current
Change, measure obtained data reliable.It when a certain measuring unit is damaged, can also be adjusted correspondingly, or can realize batch
Measurement, improves measurement efficiency.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (10)
1. the device that scene is measured to intensive tube bundle diameter and oxide thickness, it is characterised in that including installed in measurement
Several rod footpath measuring units and several oxide thickness measuring units on stand, rod footpath measuring unit are arranged at
In same level, oxide thickness measuring unit is arranged in same level, inside the measuring unit of each rod footpath and every
The passage passed through for sample pipe, and the passage correspondence of each rod footpath measuring unit are provided with inside individual oxide thickness measuring unit
Passage with one of oxide thickness measuring unit is coaxial.
2. the device that scene according to claim 1 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, the measurement stand includes positioning pipe (6), main supporting plate (5), rod footpath measuring unit location-plate (8), oxide-film measurement list
First location-plate (3) and gripping apparatus location-plate (9), the top of positioning pipe (6) are fixed with main supporting plate (5), and rod footpath is measured from bottom to up
Cell location plate (8), oxide-film measuring unit location-plate (3) and gripping apparatus location-plate (9) are successively set on above main supporting plate (5)
And be fixed to one another, rod footpath measuring unit is arranged at rod footpath measuring unit location-plate (8) and oxide-film measuring unit location-plate (3)
Between and fixed with rod footpath measuring unit, oxide thickness measuring unit be arranged at oxide-film measuring unit location-plate (3) and
It is between gripping apparatus location-plate (9) and fixed with oxide-film measuring unit location-plate (3).
3. the device that scene according to claim 2 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, rod footpath measuring unit includes mounting seat (25), mounting seat (25) is fixed in rod footpath measuring unit (8), installs
It is provided with seat (25) on guide rod one (24), guide rod one (24) and is cased with movable block one (26) and movable block two (27), and is moved
Motion block one (26) and movable block two (27) can on guide rod one (24) along guide rod one (24) axis direction move,
Spring one (12) is also cased with guide rod one (24), spring one (12) is arranged on movable block one (26) or movable block two (27) and peace
Fill between seat (25) inwall, and spring one (12) can be stretched along the axis direction of guide rod one (24) on guide rod one (24)
Contracting, is provided with rod footpath measurement seat (14) between movable block one (26) and movable block two (27), rod footpath measurement seat (14), which is passed through, to be installed
Seat (25) is simultaneously fixed with mounting seat (25), and rod footpath measurement seat (14) is towards in the outer wall of movable block one (26) and movable block two (27)
Spill is connected into breach, and breach with the inner chamber that rod footpath measures seat (14), and contact rod (13), contact rod are provided with breach
(13) it is fixed with corresponding movable block one (26) or movable block two (27) respectively, pacify on movable block one (26) or movable block two (27)
Equipped with displacement transducer (11).
4. the device that scene according to claim 3 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, the quantity of the guide rod one (24) is two and be parallel to each other that rod footpath measurement seat (14) is arranged on guide rod one (24)
Between.
5. the device that scene according to claim 2 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, the oxide thickness measuring unit includes bottom oxide film thickness measure seat (21), bottom oxide film thickness measure
Seat (21) is fixed with oxide-film measuring unit location-plate (3), and guide rod two is provided with bottom oxide film thickness measure seat (21),
Spring two and upper oxide film thickness measurement seat (19) are cased with guide rod two, spring two is arranged on the measurement of upper oxide film thickness
Between seat (19) and bottom oxide film thickness measure seat (21) inwall, and upper oxide film thickness measurement seat (19) can be oriented to
Moved on bar two along the axis of guide rod two, spring two can be flexible along the axis of guide rod two on guide rod two；On
Be provided with portion oxide thickness measurement seat (19) on guide rod three (23), guide rod three (23) at the same be cased with spring three (22),
Movable block three (16) and movable block four (20), spring three (22) are arranged on movable block three (16) or movable block four (20) and top oxygen
Between change film thickness measurement seat (19) inwall, and movable block three (16) and movable block four (20) can be on guide rods three (23)
Moved along the axis direction of guide rod three (23), spring three (22) can be on guide rod three (23) along guide rod three (23)
Axis direction stretch, and the axis of guide rod three (23) and the axis of guide rod two are vertical, movable block three (16) and movable block
Oxide thickness measurement seat (17) is provided between four (20), and oxide thickness measurement seat (17) passes through upper oxide film thickness
Measure seat (19) and fixed with upper oxide film thickness measurement seat (19), oxide thickness measures seat (17) towards movable block three
And the wall of movable block four (20) is recessed mounting groove, and mounting groove measures the interior of seat (17) with oxide thickness (16)
Chamber is connected, and oxide thickness measurement sensor (15), oxide thickness measurement sensor (15) are provided with movable block three (16)
One end be inserted into towards in the mounting groove of movable block three (16), directive wheel (18) is installed, and be oriented on movable block four (20)
Wheel (18) can be rotated along axis, and the wheel face of directive wheel (18) is arranged on towards in the mounting groove of movable block four (20).
6. the device that scene according to claim 5 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, the quantity of the guide rod three (23) is two and be parallel to each other that oxide thickness measurement seat (17) is arranged on guide rod
Between three (23).
7. the device that scene according to claim 2 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, some alignment pins (2) is provided with the main supporting plate (5), and every alignment pin (2) is also cross main supporting plate
(5), rod footpath measuring unit location-plate (8), oxide-film measuring unit location-plate (3) and gripping apparatus location-plate (9).
8. the device that scene according to claim 2 is measured to intensive tube bundle diameter and oxide thickness, its feature
It is, four positioning holes are set on the gripping apparatus location-plate (9), and positioning hole is separately positioned on four angles of gripping apparatus location-plate (9)
Place.
9. scene as claimed in any of claims 1 to 8 is measured to intensive tube bundle diameter and oxide thickness
Device, it is characterised in that also including camera, the camera is horizontally disposed with, and is respectively used to measure single to rod footpath
Member and oxide thickness measuring unit are shot.
10. the method that scene is measured to intensive tube bundle diameter and oxide thickness, it is characterised in that comprise the following steps：
(1) detection means is hung in into Spent Fuel Pool, positioning pipe (6) is inserted in spent fuel storage rack component holes, main support
Plate (5) is placed on spent fuel storage rack；
(2) sample tube bank will be irradiated using gripping apparatus to catch from component, moved to above measurement stand, adjustment inserts locating bar after
In the gripping apparatus location-plate (9) for entering to measure stand, and carry out mark；
(3) manipulating grab will irradiate sample tube bank insertion measurement stand, when rod footpath measuring unit into data occurs, record grabbing now
The Z-direction coordinate of tool；
(4) on the basis of Z-direction coordinate in step 3, driving gripping apparatus carries out plunger, and 8 Irradiation Test sample pipes can be carried out simultaneously and are erected
Measured to total travel optional position rod footpath and oxide thickness；
(5) after 8 Irradiation Test sample pipes are measured, the tube bank of Irradiation Test sample is proposed into measurement stand, and according to step 2
Mark turn clockwise 90 °, repeat step two to step 4 completes rod footpath and the oxidation of remaining 8 Irradiation Test samples tube bank
Film thickness is measured.
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| CN201710486398.8A CN107274941B (en) | 2017-06-23 | 2017-06-23 | The device and method that scene measures intensive tube bundle diameter and oxide thickness |
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| CN201710486398.8A CN107274941B (en) | 2017-06-23 | 2017-06-23 | The device and method that scene measures intensive tube bundle diameter and oxide thickness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108534657A (en) * | 2018-06-05 | 2018-09-14 | 河北工业大学 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
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| WO1998014752A1 (en) * | 1996-09-30 | 1998-04-09 | Framatome | Method and device for measuring the deformation of a guide tube |
| CN102867555A (en) * | 2011-07-08 | 2013-01-09 | 韩电原子力燃料株式会社 | Probe and apparatus for measuring oxide layer thickness of nuclear fuel assembly containing the same |
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| Publication number | Publication date |
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| CN107274941B (en) | 2019-01-22 |
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