CN107274941B - The device and method that scene measures intensive tube bundle diameter and oxide thickness - Google Patents
The device and method that scene measures intensive tube bundle diameter and oxide thickness Download PDFInfo
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- CN107274941B CN107274941B CN201710486398.8A CN201710486398A CN107274941B CN 107274941 B CN107274941 B CN 107274941B CN 201710486398 A CN201710486398 A CN 201710486398A CN 107274941 B CN107274941 B CN 107274941B
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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 a kind of device and method that scene measures intensive tube bundle diameter and oxide thickness, including several stick diameter measuring units and several oxide thickness measuring units being mounted on measurement rack, stick diameter measuring unit is arranged in same level, oxide thickness measuring unit is arranged in same level, the channel passed through for sample pipe is provided with inside each stick diameter measuring unit and inside each oxide thickness measuring unit, and the channel correspondence of each stick diameter measuring unit is coaxial with the channel of one of oxide thickness measuring unit.The present invention can directly carry out the precise measurement of total travel any position by the way that intensive tube bundle is classified to intensive tube bundle diameter and oxide thickness at the scene；It in measurement process without direct body contact, is measured, is detected more safe and efficient, reliable by minor change of the sensor to diameter and oxide thickness；When a certain measuring unit breaks down, measurement work still can be completed.
Description
Technical field
The invention belongs to nuclear industry detection technique fields, and in particular to a kind of live to intensive tube bundle diameter and thickness of oxidation film
Spend the device and method measured.
Background technique
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, after several test circulations, after needing to measure sample tube bank irradiation
The minor change of size, such as the minor change of diameter and oxide thickness.
Sample tube bank is made of 16 3m elongated test sample pipe and several stubs, and only upper end relative position is fixed, cloth
It sets more intensively, and lower end is free, in water as windbell, carries out the dimensional measurement of total travel any position to it under water, it is difficult
It spends huge.It can be in the diameter and oxide thickness of Spent Fuel Pool progress sample tube bank currently, there has been no mature detection devices
Measurement.
Summary of the invention
When being measured the technical problem to be solved by the present invention is to existing scene for intensive tube bundle diameter and oxide thickness
It is difficult to carry out the dimensional measurement of total travel any position, the error of measurement is big, and its purpose is to provide a kind of scenes to intensive tube bundle
The device and method that diameter and oxide thickness measure, the device and method can be at the scene to intensive tube bundle diameter and oxygen
Change the precise measurement that film thickness carries out total travel any position, and measures efficient, safe and reliable.
The present invention is achieved through the following technical solutions:
The device that scene measures intensive tube bundle diameter and oxide thickness, if including being mounted on measurement rack
Dry stick diameter measuring unit and several oxide thickness measuring units, the stick diameter measuring unit are arranged at same level
Interior, oxide thickness measuring unit is arranged in same level, each stick diameter measuring unit inside and each thickness of oxidation film
Be provided with the channel passed through for sample pipe inside degree measuring unit, and each stick diameter measuring unit channel it is corresponding and one of them
The channel of oxide thickness measuring unit is coaxial.In nuclear power plant, sample tube bank is after being recycled, diameter and oxidation film
Thickness can generate variation, need to come out these measure of the changes, if it disassembled completely, be sent in laboratory individually
Every sample pipe is measured, by advanced measuring instrument and means, can be realized the precise measurement of total travel any position,
But whole process is cumbersome, and to dismount to sample pipe, causes waiting for a long time, and disassembly process even will cause sample
It manages locating environmental change and measurement result is affected, while sample pipe itself has high radioactivity, harm to the human body again
Property is big, needs special transport, very troublesome.Therefore it is preferably able at the scene directly measure sample pipe, and the sample at scene
Tube bank is made of 16 3m elongated test sample pipe and several stubs, and only upper end relative position is fixed, and arrangement is more intensive,
The distance between adjacent sample pipe is small, and measuring instrument cannot be introduced into wherein, and the lower end of sample pipe is free, in water as windbell one
Sample is easy to produce collision with current shifting after measuring instrument insertion, at the same the sample pipe of shaking also result in measuring device can not be into
The accurate measurement of row, existing measurement structure and method can not carry out the dimensional measurement of total travel any position to it under water, measure
Difficulty it is big, error is big.This programme is then able to solve the above problem, by designing unique structure, at the scene according to intensive
The arrangement position of sample tube bank, forms corresponding arrangement relation, can disposably accommodate the sample pipe of single area and fixed, then benefit
With the stick diameter measuring unit and oxide thickness measuring unit being mounted on measurement rack, the straight of the sample tube bank to the region is realized
Diameter and oxide thickness carry out the precise measurement of total travel any position, due to being that sample tube bank has been carried out fixed and batch to survey
Amount so that measurement is more efficient, while being also not required to dismantle sample pipe, and fixed between sample pipe, will not generate
It shakes, while without artificial contact, measurement process is safer, and the data measured are relatively reliable.
Measurement rack is for the fixed structure to entire measuring device, and measuring rack includes positioning pipe, main supporting plate, stick
Diameter measuring unit positioning plate, oxidation film measuring unit positioning plate and gripping apparatus positioning plate, top and the main supporting plate of positioning pipe are fixed,
Stick diameter measuring unit positioning plate, oxidation film measuring unit positioning plate and gripping apparatus positioning plate are successively set on main supporting plate from bottom to up
Top and be fixed to one another, stick diameter measuring unit be arranged at stick diameter measuring unit positioning plate and oxidation film measuring unit positioning plate it
Between and fix with stick diameter measuring unit, oxide thickness measuring unit is arranged at oxidation film measuring unit positioning plate and gripping apparatus is fixed
It is fixed between the plate of position and with oxidation film measuring unit positioning plate.So that keep stablizing in entire measurement process, it will not be due to water
Frictional force or other contact forces that stream or equipment generate when mobile and cause measuring unit to move, influence measurement knot
Fruit.Main supporting plate is placed on spentnuclear fuel screen work upper end when working, and carries the weight of measuring device.
Stick diameter measuring unit includes mounting base, and mounting base is fixed in stick diameter measuring unit, is provided with and leads in mounting base
To bar one, movable block one and movable block two are cased on 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, the setting of spring one is in movable block one or moves
Between motion block two and mounting base inner wall, and spring one can be flexible along the axis direction of guide rod one on guide rod one, moves
Stick diameter measurement seat is provided between motion block one and movable block two, stick diameter measurement seat passes through mounting base and fixes with mounting base, is oriented to
The quantity of bar one is preferably two and is parallel to each other, and stick diameter measures seat and is arranged between guide rod one, and stick diameter measures seat towards shifting
The outer wall of motion block one and movable block two is recessed notch, and notch is connected to the inner cavity of stick diameter measurement seat, is respectively provided in notch
There is contact rod, contact rod is fixed with corresponding movable block one or movable block two respectively, is equipped on movable block one or movable block two
Displacement sensor.Stick diameter measuring unit is used to measure the stick diameter of single point, and stick diameter measurement seat has movable block one and movable block two
Position restriction effect prevents movable block one and movable block two from leaning on closely to cause fuel rod that can not be inserted into very much.At work, fuel rod
It is inserted into corresponding stick diameter measuring unit, struts contact rod, further makes movable block one and movable block two mobile, and drive small
The movement of displacement sensor, to be measured to stick diameter.Displacement sensor is existing structure, for showing to micro-displacement
Show, accuracy is high, can buy in the market.
Oxide thickness measuring unit is contact type structure, equipped with the mobile self-adaption two-dimensional mobile platform of horizontal direction,
Oxide thickness measuring unit includes bottom oxide film thickness measure seat, and bottom oxide film thickness measure seat and oxidation film measure
Cell location plate is fixed, and guide rod two is provided in bottom oxide film thickness measure seat, and spring two and upper is cased on guide rod two
Portion's oxide thickness measures seat, and the setting of spring two measures seat and bottom oxide film thickness measure seat inner wall in upper oxide film thickness
Between, and upper oxide film thickness measurement seat can move on guide rod two along the axis of guide rod two, spring two can
It is flexible along the axis of guide rod two on guide rod two, X is constituted in this way to adaptive mobile platform；Upper oxide film thickness is surveyed
It is provided with guide rod three in amount seat, is cased with spring three, movable block three and movable block four on guide rod three simultaneously, the setting of spring three exists
Between movable block three or movable block four and upper oxide film thickness measurement seat inner wall, and movable block three and movable block four can be
It is moved on guide rod three along the axis direction of guide rod three, spring three can be on guide rod three along the axis of guide rod three
Direction is flexible, and the axis of the axis of guide rod three and guide rod two is vertical, in this way composition Y-direction adaptive platform, movable block three
Oxide thickness measurement seat is provided between movable block four, and oxide thickness measurement seat is measured across 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
It measures seat to be arranged between guide rod three, oxide thickness measures the equal concave shaped of wall surface of seat towards movable block three and movable block four
At mounting groove, and mounting groove is connected to the inner cavity of oxide thickness measurement seat, and oxide thickness survey is equipped on movable block three
Quantity sensor, one end of oxide thickness measurement sensor are inserted into towards in the mounting groove of movable block three, pacify 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 in towards in the mounting groove of movable block four.
Sample pipe can not rotate when due to in-site measurement, and when work, fuel rod is inserted into 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 showing to micro-displacement state
Show, accuracy is high, can buy in the market.
Main supporting plate, stick diameter measuring unit positioning plate, oxidation film measuring unit positioning plate and gripping apparatus are positioned in order to realize
Plate is fixed, and several positioning pins are provided on main supporting plate, due to main supporting plate, stick diameter measuring unit positioning plate, oxygen
Change film measuring unit positioning plate and gripping apparatus positioning plate shape to be correspondingly arranged in quadrangle so positioning pin is preferably four
At four angles, and every positioning pin is positioned also cross main supporting plate, stick diameter measuring unit positioning plate, oxidation film measuring unit
Plate and gripping apparatus positioning plate.
Four location holes are set on gripping apparatus positioning plate, and location hole is separately positioned at four angles of gripping apparatus positioning plate, is positioned
Hole is the positioning for gripping apparatus.
In order to be monitored to measurement process, it is provided with camera, the quantity of camera is preferably two, all uses high definition
Camera, so that detection effect is more preferable.Camera is all horizontally disposed with, for monitoring entire measurement process, each camera
It is respectively used to shoot stick diameter measuring unit and oxide thickness measuring unit.
The method that scene measures intensive tube bundle diameter and oxide thickness, comprising the following steps:
(1) it will test device and hang in Spent Fuel Pool, make in positioning pipe insertion spent fuel storage rack component holes, main support
Plate is placed on spent fuel storage rack；
(2) sample tube bank being irradiated using gripping apparatus to catch from component, being moved to above measurement rack, adjustment will positioning after
In the gripping apparatus positioning plate of stick insertion measurement rack, and carry out mark；
(3) manipulating grab will irradiate sample tube bank insertion measurement rack, and when data is occurred in stick diameter measuring unit, record is at this time
Gripping apparatus Z-direction coordinate；
(4) on the basis of Z-direction coordinate in step 3, driving gripping apparatus carries out plunger, can carry out 8 Irradiation Test samples simultaneously
Manage vertical total travel any position stick diameter and oxide thickness measurement；
(5) after 8 Irradiation Test sample pipes are measured, Irradiation Test sample is restrained and proposes measurement rack, and according to step
Rapid two mark rotates clockwise 90o, repeats step 2 to step 4, complete remaining 8 Irradiation Test samples tube bank stick diameter and
Oxide thickness measurement.
The present invention by above-mentioned measurement method, can at the scene directly to underwater high radioactivity intensive tube bundle carry out diameter and
Oxide thickness measurement, in entire measurement process, collisionless and position is fixed between sample pipe, by contact type measurement,
Insertion standard rod established standards value is first passed through in advance, and diameter and thickness is measured using sensor, obtains accurately measuring number
Value, in entire measurement process, due to sample tube bank can not rotate, measured by point from the point of view of the entire stroke of sample pipe, all
It is the measurement of any vertical position of total travel, entire measurement process prevents radiation injury without direct body contact, simultaneously because
It is directly measured at the scene, is not required to dismantle sample pipe, and be in the measurement of batch, substantially increase measurement efficiency, people
Need to only be needed to realize measurement to different vertical positions according to measurement, accurately be counted according to the signal of sensor feedback
Value, meet demand, entire measurement result are reliable.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention, can be at the scene directly to intensive tube bundle diameter and thickness of oxidation film by the way that intensive tube bundle is classified
Degree carries out the precise measurement of total travel any position；
2, the present invention in measurement process without direct body contact, by sensor to the small of diameter and oxide thickness
Variation measures, and detects more safe and efficient, reliable；
3, when the present invention has fully considered that a certain measuring unit breaks down, measurement work can still be completed.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand 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 schematic diagram of stick diameter measuring unit；
Fig. 3 is the structural schematic diagram of oxidation film measuring unit；
Fig. 4 is oxidation film measuring unit layout；
Fig. 5 is instrumentation plan when fuel rod is inserted into.
Label and corresponding parts title in attached drawing:
1- camera one, 2- positioning pin, 3- oxidation film measuring unit positioning plate, 4- camera two, 5- main supporting plate, 6- are fixed
Position pipe, 7- lifting lug, 8- stick diameter measuring unit positioning plate, 9- gripping apparatus positioning plate, 10- irradiate sample tube bank, 11- displacement sensor, 12-
Spring one, 13- contact rod, 14- stick diameter measure seat, 15- oxide thickness measurement sensor, 16- movable block three, 17- oxidation film
Thickness measure seat, 18- directive wheel, 19- upper oxide film thickness measure seat, 20- movable block four, and 21- bottom oxide film thickness is surveyed
Measure seat, 22- spring three, 23- guide rod three, 24- guide rod one, 25- mounting base, 26- movable block one, 27- movable block two.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
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 of high radioactivity
The diameter and oxide thickness measuring device and method of pipe, irradiation sample tube bank are made of 16 irradiation sample pipes, are laid out outside corresponding diagram 4
16 positions are enclosed, the present embodiment carries out stick diameter and oxide thickness measurement for 16 irradiation sample pipes.Its hardware configuration includes peace
8 stick diameter measuring units and 8 oxide thickness measuring units on measurement rack, the knot corresponding to irradiation sample tube bank
Structure can be adjusted according to the structure of irradiation tube bank, and medium rod diameter measuring unit is arranged in same level, oxidation film
Thickness measuring unit is arranged in same level, and oxide thickness measuring unit is arranged above stick diameter measuring unit, often
The channel passed through for sample pipe is provided with inside a stick diameter measuring unit and inside each oxide thickness measuring unit, and each
The channel correspondence of stick diameter measuring unit is coaxial with the channel of one of oxide thickness measuring unit, i.e., when measuring,
Every sample Guan Bineng is inserted into an insertion oxide thickness measuring unit and stick diameter measuring unit simultaneously, and each oxide thickness is surveyed
It is mating in groups with a stick diameter measuring unit to measure unit correspondence.
And measuring rack includes that positioning pipe 6, main supporting plate 5, stick diameter measuring unit positioning plate 8, oxidation film measuring unit are fixed
Position plate 3 and gripping apparatus positioning plate 9, the top of positioning pipe 6 and main supporting plate 5 are fixed, and positioning pipe 6 is solid for position to sample pipe
Fixed device, medium rod diameter measuring unit positioning plate 8, oxidation film measuring unit positioning plate 3 and gripping apparatus positioning plate 9 are arranged at master
5 top of support plate, stick diameter measuring unit positioning plate 8 and oxidation film measuring unit positioning plate 3 are arranged in gripping apparatus positioning plate 9 and main branch
Between fagging 5, stick diameter measuring unit positioning plate 8 is arranged between oxidation film measuring unit positioning plate 3 and main supporting plate 5, main branch
Fagging is respectively arranged with lifting lug 7 on 5 four angles, four positioning pins 2 is provided on main supporting plate 5, and every positioning pin 2 is simultaneously
It is fixed across main supporting plate 5, stick diameter measuring unit positioning plate 8, oxidation film measuring unit positioning plate 3 and gripping apparatus positioning plate 9.
Four location holes are set also on gripping apparatus positioning plate 9, and location hole is separately positioned at four angles of gripping apparatus positioning plate 9 come for grabbing
The positioning of tool.And stick diameter measuring unit is arranged between stick diameter measuring unit positioning plate 8 and oxidation film measuring unit positioning plate 3
And fixed with stick diameter measuring unit, oxide thickness measuring unit is arranged at oxidation film measuring unit positioning plate 3 and gripping apparatus is fixed
It is between the plate 9 of position and fixed with oxidation film measuring unit positioning plate 3.In order to realize the monitoring to entire measurement process, it is provided with two
A camera is respectively designated as camera 1 and camera 24, and camera 1 and camera 24 are horizontally disposed, camera
One 1 for shooting the measurement process of oxide thickness measuring unit, and camera 24 is for the survey to stick diameter measuring unit
Amount process is shot.
And stick diameter measuring unit includes mounting base 25, mounting base 25 is fixed in stick diameter measuring unit 8, in order to enable knot
Structure is more compact, is recessed groove in 25 top surface of mounting base, guide rod 1 is in the groove of mounting base 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
The axis direction of guide rod 1 is mobile, and spring 1 is also cased on guide rod 1, and spring 1 is arranged in movable block 1
Or between 25 inner wall of movable block 2 27 and mounting base, and spring 1 can be on guide rod 1 along the axis of guide rod 1
Line direction is flexible, and stick diameter measurement seat 14 is provided between movable block 1 and movable block 2 27, and stick diameter measures seat 14 and passes through installation
Seat 25 is simultaneously fixed with mounting base 25, and the quantity of guide rod 1 is two and is parallel to each other, and is able to maintain when for guaranteeing mobile
Same straight line prevents components interior displacement error from measurement data being caused to generate error, and stick diameter measurement seat 14 is arranged in guide rod
Between one 24, the outer wall of stick diameter measurement seat 14 towards movable block 1 and movable block 2 27 is recessed notch, and notch and stick
Diameter measures the inner cavity connection of seat 14, is provided with contact rod 13 in notch, contact rod 13 respectively with corresponding movable block 1 or
Movable block 2 27 is fixed, and contact rod 13 is the component for contacting with sample pipe outer wall, and when sample pipe is insertion, spring 1 is in
Normal condition, contact rod 13 is located in the inner cavity of stick diameter measurement seat 14 in notch at this time, after being inserted into sample pipe, due to
The diameter of sample pipe itself is more smaller than the internal diameter of stick diameter measurement seat 14, if sample pipe diameter does not change, contact rod 13 is squeezed, and moves
Motion block 1 and movable block 2 27 generate movement, the data and preset standard value one generated on displacement sensor 11
It causes, according to the difference of insertion position, with the diameter change of sample pipe, displacement sensor 11 can survey the stick diameter of each position
It measures and, the numerical value of measurement is accurate, and it is all existing for those skilled in the art that specific calculating process, which is all existing,.
And oxide thickness measuring unit includes bottom oxide film thickness measure seat 21, bottom oxide film thickness measure seat
21 is fixed with oxidation film measuring unit positioning plate 3, and 21 top surface of bottom oxide film thickness measure seat is recessed mounting groove, and two are led
It is arranged in the mounting groove of bottom oxide film thickness measure seat 21 to bar two, spring two and upper oxide film is cased on guide rod two
Thickness measure seat 19, the setting of spring two upper oxide film thickness measure seat 19 and 21 inner wall of bottom oxide film thickness measure seat it
Between, and upper oxide film thickness measurement seat 19 can move on guide rod two along the axis of guide rod two, spring two can
It is flexible along the axis of guide rod two on guide rod two, X is formed to adaptive adjustment；Upper oxide film thickness measures seat 19 and pushes 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, is formed whole
It is compact on body.Spring 3 22, movable block 3 16 and movable block 4 20 are cased on guide rod 3 23 simultaneously, the setting of spring 3 22 exists
Between movable block 3 16 or movable block 4 20 and upper oxide film thickness measurement 19 inner wall of seat, and movable block 3 16 and movable block four
20 can move on guide rod 3 23 along the axis direction of guide rod 3 23, and spring 3 22 can be on guide rod 3 23
It is flexible along the axis direction of guide rod 3 23, and the axis of the axis of guide rod 3 23 and guide rod two is 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 measures seat 17 and is arranged between guide rod 3 23, and oxide thickness measures seat 17 towards movable block 3 16 and movement
The wall surface of block 4 20 is recessed mounting groove, and mounting groove is connected to the inner cavity of oxide thickness measurement seat 17, 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, and directive wheel 18 can be rotated along axis on movable block 4 20, directive wheel
18 wheel face is arranged in towards in the mounting groove of movable block 4 20.It is measured in seat 17 when sample pipe is inserted into oxide thickness, with
Sample pipe snaps onto the wheel face groove of directive wheel 18, is formed and clamps positioning, with the rotation of directive wheel 18, also makes mobile to sample pipe
Process is oriented to, and in this process, is squeezed oxide thickness measurement sensor 15, so that oxide thickness measures
Sensor 15 generates corresponding displacement, is measured according to displacement data, measurement data and pre-selection setting standard value into
Row comparison, detailed calculation method are all well known to those skilled in the art.
Stick diameter measuring unit and oxide thickness measuring unit are arranged in stick diameter according to the arrangement of attached drawing 4 and survey
It measures on cell location plate and oxide thickness measuring unit positioning plate.By being laid out above, it disposably can detecte 8 fuel rods
Stick diameter and oxide thickness,
The step of its specific measurement method, is as follows:
Step 1: will test device by four lifting lugs 7 hangs in Spent Fuel Pool, positioning pipe 6 is made to be inserted into irradiated fuel store
In screen work component holes, main supporting plate 5 is placed on spent fuel storage rack.
Step 2: being previously inserted a master bar, measured by stick diameter measuring unit and oxide thickness measuring unit
Numerical value will irradiate sample tube bank using nuclear power plant's burnable poison gripping apparatus and catch from component, move on measurement rack as standard value
Side, and select suitably direction to be inserted into the locating bar of burnable poison in the gripping apparatus positioning plate of measurement rack, and carry out mark；
Step 3: operation burnable poison gripping apparatus will irradiate sample tube bank insertion measurement rack using low or first gear, when stick diameter measures
Unit occur data it is identical as standard value when, then illustrate at this time stick diameter be master bar diameter it is identical, the number that sensor at this time is shown
Value is used as standard point, records the Z-direction coordinate of burnable poison gripping apparatus at this time as starting point；
Step 4: slowly being inserted on the basis of Z-direction coordinate in step 3 using low or first gear driving burnable poison gripping apparatus
Stick, while measuring unit such as attached drawing 5 carries out 8 Irradiation Test sample pipe total travel any position stick diameters and oxide thickness measurement.
Step 5: Irradiation Test sample is restrained and proposes measurement rack, and is pressed after 8 Irradiation Test sample pipes are measured
90o is rotated clockwise according to the mark of step 2, step 2 is repeated to step 4, completes the stick of remaining 8 Irradiation Test samples tube bank
Diameter and oxide thickness measurement.
Through this embodiment, sample bundle diameters and oxide thickness measurement at random, energy are solved the problems, such as
Enough realize in batch at the scene accurately measures the stick diameter and oxide thickness of the intensive tube bundle of underwater high radioactivity,
Entire measurement process is highly-safe without human contact and operation, and measurement process will not because of water flow disturbance and generate change
Change, the data measured are reliable.
Embodiment 2:
As shown in Figures 1 to 5, the present embodiment carries out stick diameter for 16 irradiation sample pipes and oxide thickness measures, A1B1,
A2B2, A3B3, A4B4 measuring unit are mutually backups, can be by rotary components using standby if a certain measuring unit breaks down
It is detected with measuring unit, improves measurement efficiency.I.e. when measuring unit a certain in embodiment 1 breaks down, measurement is real
It applies as follows:
Step 1: it is same as Example 1, it will test device by four lifting lugs 7 and hang in Spent Fuel Pool, make positioning pipe 6
It is inserted into spent fuel storage rack component holes, main supporting plate is placed on spent fuel storage rack.
Step 2: it is same as Example 1, it is previously inserted a master bar, passes through stick diameter 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 catches from component,
It moves to above measurement rack, and selects suitable direction by the gripping apparatus positioning plate of the locating bar insertion measurement rack of burnable poison
In, and carry out mark；
Step 3: same as Example 1, operation burnable poison gripping apparatus will irradiate sample tube bank insertion test desk using low or first gear
Frame, when stick diameter measuring unit occur data it is identical as standard value when, then illustrate at this time stick diameter be master bar diameter it is identical, will pass at this time
The numerical value that sensor is shown records the Z-direction coordinate of burnable poison gripping apparatus at this time as starting point as standard point；
Step 4: slowly being inserted on the basis of Z-direction coordinate in step 3 using low or first gear driving burnable poison gripping apparatus
Stick, while measuring unit such as attached drawing 5 carries out 7 Irradiation Test sample pipe total travel any position stick diameters and oxide thickness measurement.
Step 5: Irradiation Test sample is restrained and proposes measurement rack, and is pressed after 7 Irradiation Test sample pipes are measured
90o is rotated clockwise according to the mark of step 2, and carries out mark, step 2 is repeated to step 4, completes 7 Irradiation Test sample pipes
The stick diameter and oxide thickness of beam measure；
Step 6: Irradiation Test sample is restrained and proposes measurement rack, and is pressed after 7 Irradiation Test sample pipes are measured
90o is rotated clockwise according to the mark of step 5, and carries out mark, step 2 is repeated to step 4, completes unmeasured 1 irradiation
Test stick diameter and the oxide thickness measurement of sample tube bank；
Step 7: Irradiation Test sample is restrained and proposes test desk after the Irradiation Test sample pipe in step 6 is measured
Frame, and 90o is rotated clockwise according to the mark of step 6, step 2 is repeated to step 4, completes the unmeasured spoke of last root
Stick diameter and oxide thickness measurement according to test sample tube bank.
Through this embodiment, sample bundle diameters and oxide thickness measurement at random, energy are solved the problems, such as
Enough realize in batch at the scene accurately measures the stick diameter and oxide thickness of the intensive tube bundle of underwater high radioactivity,
Entire measurement process is highly-safe without human contact and operation, and measurement process will not because of water flow disturbance and generate change
Change, the data measured are reliable.In the damage of a certain measuring unit, it is also able to carry out corresponding adjustment, is still able to achieve and criticizes
Measurement improves measurement efficiency.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (7)
1. the device that scene measures intensive tube bundle diameter and oxide thickness, which is characterized in that including being mounted on measurement
Several stick diameter measuring units and several oxide thickness measuring units on rack, the stick diameter measuring unit are arranged at
In same level, oxide thickness measuring unit is arranged in same level, inside each stick diameter measuring unit and every
The channel passed through for sample pipe is provided with inside a oxide thickness measuring unit, and the channel of each stick diameter measuring unit is corresponding
It is coaxial with the channel of one of oxide thickness measuring unit；The measurement rack include positioning pipe (6), main supporting plate (5),
Stick diameter measuring unit positioning plate (8), oxidation film measuring unit positioning plate (3) and gripping apparatus positioning plate (9), the top of positioning pipe (6)
It is fixed with main supporting plate (5), from bottom to up stick diameter measuring unit positioning plate (8), oxidation film measuring unit positioning plate (3) and gripping apparatus
Positioning plate (9) is successively set on above main supporting plate (5) and is fixed to one another, and stick diameter measuring unit is arranged at stick diameter measuring unit
It is fixed between positioning plate (8) and oxidation film measuring unit positioning plate (3) and with stick diameter measuring unit, oxide thickness measuring unit
Be arranged between oxidation film measuring unit positioning plate (3) and gripping apparatus positioning plate (9) and with oxidation film measuring unit positioning plate (3)
It is fixed；The stick diameter measuring unit includes mounting base (25), and mounting base (25) is fixed in stick diameter measuring unit (8), installation
It is provided with guide rod one (24) in seat (25), movable block one (26) and movable block two (27) are cased on guide rod one (24), and move
Motion block one (26) and movable block two (27) can be mobile along the axis direction of guide rod one (24) on guide rod one (24),
Spring one (12) is also cased on guide rod one (24), spring one (12) setting is in movable block one (26) or movable block two (27) and peace
It fills between seat (25) inner wall, and spring one (12) can be stretched on guide rod one (24) along the axis direction of guide rod one (24)
Contracting, is provided with stick diameter measurement seat (14) between movable block one (26) and movable block two (27), stick diameter measures seat (14) and passes through installation
Seat (25) is simultaneously fixed with mounting base (25), and stick diameter measures seat (14) towards in the outer wall of movable block one (26) and movable block two (27)
Spill is at notch, and notch is connected to the inner cavity of stick diameter measurement seat (14), and contact rod (13), contact rod are provided in notch
(13) 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 sensor (11).
2. the device that scene according to claim 1 measures intensive tube bundle diameter and oxide thickness, feature
It is, the quantity of the guide rod one (24) is two and is parallel to each other, and stick diameter measures seat (14) and is arranged in guide rod one (24)
Between.
3. the device that scene according to claim 1 measures intensive tube bundle diameter and oxide thickness, feature
It is, the oxide thickness measuring unit includes bottom oxide film thickness measure seat (21), bottom oxide film thickness measure
Seat (21) and oxidation film measuring unit positioning plate (3) are fixed, are provided with guide rod two in bottom oxide film thickness measure seat (21),
Spring two and upper oxide film thickness measurement seat (19) are cased on guide rod two, the setting of spring two is measured in upper oxide film thickness
Between seat (19) and bottom oxide film thickness measure seat (21) inner wall, and upper oxide film thickness measurement seat (19) can be oriented to
It is 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 guide rod three (23) in portion's oxide thickness measurement seat (19), be cased with simultaneously on guide rod three (23) spring three (22),
Movable block three (16) and movable block four (20), spring three (22) setting is in movable block three (16) or movable block four (20) and top oxygen
Change between film thickness measurement seat (19) inner wall, and movable block three (16) and movable block four (20) can be on guide rods three (23)
Mobile 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 it is flexible, and the axis of the axis of guide rod three (23) and guide rod two is 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
It measures seat (19) and is fixed with upper oxide film thickness measurement seat (19), oxide thickness measures seat (17) towards movable block three
(16) and the wall surface of movable block four (20) is recessed mounting groove, and mounting groove is interior with oxide thickness measurement seat (17)
Chamber is connected to, and is equipped with oxide thickness measurement sensor (15) on movable block three (16), oxide thickness measurement sensor (15)
One end be inserted into towards in the mounting groove of movable block three (16), be equipped on movable block four (20) directive wheel (18), and be oriented to
Wheel (18) can be rotated along axis, and the wheel face of directive wheel (18) is arranged in the mounting groove towards movable block four (20).
4. the device that scene according to claim 3 measures intensive tube bundle diameter and oxide thickness, feature
It is, the quantity of the guide rod three (23) is two and is parallel to each other, and oxide thickness measures seat (17) and is arranged in guide rod
Between three (23).
5. the device that scene according to claim 1 measures intensive tube bundle diameter and oxide thickness, feature
It is, several positioning pins (2) is provided on the main supporting plate (5), and every positioning pin (2) is also cross main supporting plate
(5), stick diameter measuring unit positioning plate (8), oxidation film measuring unit positioning plate (3) and gripping apparatus positioning plate (9).
6. the device that scene according to claim 1 measures intensive tube bundle diameter and oxide thickness, feature
It is, four location holes are arranged on the gripping apparatus positioning plate (9), and location hole is separately positioned on four angles of gripping apparatus positioning plate (9)
Place.
7. scene as claimed in any of claims 1 to 6 measures intensive tube bundle diameter and oxide thickness
Device, which is characterized in that further include camera, the camera is horizontally disposed, and is respectively used to measure stick diameter single
Member and oxide thickness measuring unit are shot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486398.8A CN107274941B (en) | 2017-06-23 | 2017-06-23 | The device and method that scene measures intensive tube bundle diameter and oxide thickness |
Publications (2)
| Publication Number | Publication Date |
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| CN107274941A CN107274941A (en) | 2017-10-20 |
| CN107274941B true CN107274941B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710486398.8A Active 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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| CN108534657B (en) * | 2018-06-05 | 2019-10-15 | 河北工业大学 | A kind of passive self-adaptive kernel fuel assembly multifunctional detecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2754053B1 (en) * | 1996-09-30 | 1999-04-16 | Framatome Sa | GUIDED TUBE DEFORMATION MEASUREMENT METHOD AND DEVICE |
| KR101222012B1 (en) * | 2011-07-08 | 2013-01-14 | 한전원자력연료 주식회사 | Measuring device for the fuel rod outside diameter of nuclear fuel assembly |
| CN105136880B (en) * | 2015-09-02 | 2018-08-17 | 武汉康捷科技发展有限公司 | Copper oxide thickness measuring instrument and measurement method |
| CN105203037A (en) * | 2015-09-21 | 2015-12-30 | 长飞光纤光缆股份有限公司 | Device for on-line measurement of diameter of prefabricated rod |
| CN106448765B (en) * | 2016-11-25 | 2017-12-15 | 中国核动力研究设计院 | Detection means suitable for spent nuclear fuel in nuclear power plant component overall performance inspection |
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