CN113049455A - Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device - Google Patents
Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device Download PDFInfo
- Publication number
- CN113049455A CN113049455A CN201911362915.6A CN201911362915A CN113049455A CN 113049455 A CN113049455 A CN 113049455A CN 201911362915 A CN201911362915 A CN 201911362915A CN 113049455 A CN113049455 A CN 113049455A
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- Prior art keywords
- particle
- cabin
- particles
- granule
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002245 particle Substances 0.000 title claims abstract description 112
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 238000005253 cladding Methods 0.000 title claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 239000008187 granular material Substances 0.000 claims description 35
- 230000000694 effects Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 239000003758 nuclear fuel Substances 0.000 abstract description 4
- 108010066057 cabin-1 Proteins 0.000 description 13
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to the technical field of nuclear fuel size detection, and particularly discloses a cladding fuel particle and nuclear core traceability diameter auxiliary measuring device. The particle chamber is arranged, is suitable for measuring the diameters and the out-of-roundness diameters of cores and coated particles with different sizes, and solves the problems that the particles are difficult to fix, the stacking intervals of the particles are not fixed, the measurement is inconvenient under a metallographic microscope and the like.
Description
Technical Field
The invention belongs to the technical field of nuclear fuel size detection, and particularly relates to an auxiliary measuring device for traceability diameters of cladding fuel particles and cores.
Background
The important research field of the cladding fuel particles and the core as the nuclear fuel element is not only applied to the production of the high-temperature gas cooled reactor fuel element, but also applied to the research of FCM, the research of the components of the core is not limited to uranium dioxide, and the core is widely researched as far as the research of thorium, carbon or rare earth elements with different proportions, wherein the diameter and the out-of-roundness are one of important physical properties.
The sizes of the cladding fuel particles and the core directly influence the uranium content in the particles, and the roundness of the particles is an important control index influencing the internal stress bearing capacity of the particles when an accident happens. The measurement of the diameters and the out-of-roundness of the cladding fuel particles and the core is one of the items for detecting the density of the loose layer of the cladding fuel particles, and has important significance for exploring nuclear accident-resistant fuel.
As the sizes of the coated fuel particles and the core are smaller, for the density detection of the loose layer of the coated fuel particles, the mass-volume method can only be used at present, the diameter and the mass of ten coated particles and corresponding cores are detected one by one under a microscope and an ultramicro balance, then the density of the loose layer of each particle is obtained by calculation, and the average value is taken as the density of the loose layer of the batch. Compared with other density detection methods, the mass-volume method can obtain the density result of the loose layer of the coated fuel particles with higher accuracy through calculation, but when the particle diameter is obtained through measurement, the particle circle is not easy to fix, and the diameters of the particles before and after the particles are stripped from the loose layer need to be measured, so that the tracing of single particles is necessary. Only at present, a detection auxiliary device which is specially used for tracing and convenient positioning of the diameter measurement of the cladding fuel particles and the core with different sizes does not exist.
Disclosure of Invention
The invention aims to provide an auxiliary measuring device for traceability diameters of coated fuel particles and cores, which can be used for auxiliary measurement of the diameters and non-circularity of the particles and is convenient for finding the positions of the particles after the test is completed.
The technical scheme of the invention is as follows:
an auxiliary measuring device for traceability diameters of coated fuel particles and cores is of a flat plate structure, and a particle cabin is processed on the upper surface of the flat plate structure;
the particle cabin is a cylindrical groove, the diameter of the particle cabin is larger than the maximum diameter of the particles to be detected, and the particles can be clamped into or out of the particle cabin conveniently by using tweezers;
when carrying out granule diameter and detecting, the granule is located the granule cabin, can realize spacing to the granule, can trace back to corresponding granule to specific image when detecting when accomplishing.
The bottom surface in granule cabin is the cambered surface, makes the granule can roll the central point that falls granule cabin bottom surface put, avoids the granule to be close to the inner wall in granule cabin when measuring and influences the formation of image effect.
The particle positioning holes are processed in the center of the bottom surface of the particle cabin, so that particles can be erected on the particle positioning holes, and the particles are prevented from moving along with the movement of a metallographic microscope objective table.
The diameters of the particle positioning holes can be set to be 0.53mm, 0.38mm and 0.28mm, and the particle positioning holes are respectively suitable for cladding fuel particles with the diameters of 700-1200 microns and cores with the diameters of 450-650 microns and 330-500 microns.
The radius of the arc bottom surface in granule cabin is 9.5 ~ 9.6mm, makes things convenient for the sample landing bottom, is fixed by the granule locating hole, and the inner wall in granule cabin influences the formation of image effect when avoiding measuring conveniently cooperates automatic measurement software to carry out image acquisition simultaneously.
Is made of acrylic material.
The invention has the following remarkable effects:
(1) the particle chamber is arranged, the diameter and the out-of-roundness of the core and the coated particle with different sizes can be measured, the measurement range is large, the particle diameter of the measured particle covers the minimum size of microscope identification measurement to 2000 micrometers, and the problems that the particles are difficult to fix, the stacking interval of the particles is not fixed, the measurement is inconvenient under a metallographic microscope and the like are solved.
(2) The device can realize the measurement of the condition of large size span of the particles before and after stripping in the measurement project of the density of the loose layer of the coated particles, does not need to adjust the material trays with different sizes in the measurement, and simultaneously avoids the error caused by replacing the material trays in the measurement process.
(3) The particle cabin has a certain depth, so that particles can be prevented from splashing, and the problem of improper treatment of nuclear materials is avoided.
(4) The arc-shaped design of the bottom surface of the particle cabin is convenient for particles to automatically slide to the bottom of the particle cabin, and the influence of the outer wall of the particle cabin on the imaging of a metallographic microscope is avoided.
(5) The device is moderate in size, can be conveniently fixed on a metallographic microscope objective table for testing, can automatically acquire sample information by matching with an automatic measurement program in Chuiss metallographic microscope software, and improves the detection efficiency.
Drawings
FIG. 1 is a top view of a measuring device;
fig. 2 is a front view of the measuring device.
In the figure: 1. a particle compartment; 2. and (6) positioning the holes for the particles.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
The tracing diameter auxiliary measuring device for the cladding fuel particles and the core as shown in fig. 1 and fig. 2 is a flat plate structure, and a particle chamber 1 is processed on the upper surface of the flat plate structure.
The particle cabin 1 is a cylindrical groove, the diameter of the particle cabin 1 is larger than the maximum diameter of the particles to be detected, and the particles can be clamped into or out of the particle cabin 1 by using tweezers conveniently. When carrying out granule diameter and detecting, the granule is located granule cabin 1, can realize spacing to the granule, can trace back to corresponding granule to specific image when detecting the completion. The bottom surface of the particle cabin 1 is an arc surface, so that particles can roll to the central position of the bottom surface of the particle cabin 1, and the influence of the inner wall of the particle cabin 1 on the imaging effect during measurement is avoided.
The central point of 1 bottom surfaces in granule cabin puts and is processed granule locating hole 2, makes the granule erect on granule locating hole 2, avoids the granule to remove along with the removal of metallographic microscope objective table.
The diameters of the particle positioning holes 2 can be set to be 0.53mm, 0.38mm and 0.28mm, and the particle positioning holes are respectively suitable for cladding fuel particles with the diameters of 700-1200 micrometers and cores with the diameters of 450-650 micrometers and 330-500 micrometers.
Examples
An auxiliary measuring device for traceability diameters of coated fuel particles and cores is 75-85 mm in length, 55-65 mm in width, 5mm in thickness and made of acrylic materials. The particle cabins 1 are arranged in a 6 multiplied by 8 mode, the total number of the particle cabins is 48, the diameter of each particle cabin 1 is 6mm, the depth of each particle cabin 1 is 2-3 mm, and the circle centers of adjacent particle cabins 1 are spaced by 9 mm.
The radius of the arc bottom surface of granule cabin 1 is 9.5 ~ 9.6mm, makes things convenient for the sample landing bottom, is fixed by granule locating hole 2, and the inner wall of granule cabin 1 influences the formation of image effect when avoiding measuring, conveniently cooperates automatic measurement software to carry out image acquisition simultaneously.
A use method of an auxiliary measuring device for tracing diameters of coated fuel particles and cores comprises the following steps:
firstly, placing samples to be measured coated with fuel particles in a particle cabin 1 in sequence, and slightly shaking a measuring device to ensure that the particles roll down along the arc-shaped bottom surface of the particle cabin 1 and are fixed in a particle fixing hole 2.
And step two, after the power supply, the light source and the software of the metallographic microscope are sequentially turned on, transferring the measuring device to a microscope objective table, clamping the microscope objective table by using a clamp, and waiting for measurement.
And step three, directly collecting sample information, or sequentially photographing corresponding particles under a metallographic microscope photographing program, or opening an automatic measuring program to automatically collect images to obtain sample information.
Claims (6)
1. The utility model provides a cladding fuel granule and nuclear diameter of tracing to source auxiliary measuring device which characterized in that: the particle cabin (1) is of a flat plate structure, and the upper surface of the particle cabin is processed;
the particle cabin (1) is a cylindrical groove, the diameter of the particle cabin is larger than the maximum diameter of the particles to be detected, and the particles can be clamped into or out of the particle cabin (1) conveniently by using tweezers;
when carrying out granule diameter and detecting, the granule is located granule cabin (1), can realize spacing to the granule, can trace back to corresponding granule to specific image when detecting the completion.
2. The device for auxiliary measurement of the traceability diameter of the cladding fuel particles and the core of claim 1, wherein: the bottom surface of the particle cabin (1) is an arc surface, so that particles can roll down to the central position of the bottom surface of the particle cabin (1), and the influence of the inner wall of the particle cabin (1) on the imaging effect during measurement is avoided.
3. The device for auxiliary measurement of the traceability diameter of the cladding fuel particles and the core of claim 2, wherein: the particle cabin (1) is characterized in that a particle positioning hole (2) is machined in the center of the bottom surface of the particle cabin, so that particles can be erected on the particle positioning hole (2), and the particles are prevented from moving along with the movement of a metallographic microscope objective table.
4. The device for auxiliary measurement of the traceability diameter of the cladding fuel particles and the core of claim 3, wherein: the diameters of the particle positioning holes (2) can be set to be 0.53mm, 0.38mm and 0.28mm, and the particle positioning holes are respectively suitable for cladding fuel particles with the diameters of 700-1200 micrometers and cores with the diameters of 450-650 micrometers and 330-500 micrometers.
5. The device for auxiliary measurement of the traceability diameter of the cladding fuel particles and the core of claim 4, wherein: the radius of the arc bottom surface of granule cabin (1) is 9.5 ~ 9.6mm, makes things convenient for the sample landing bottom, is fixed by granule locating hole (2), and the inner wall of granule cabin (1) influences the formation of image effect when avoiding measuring conveniently cooperates automatic measure software to carry out image acquisition simultaneously.
6. The device for auxiliary measurement of the traceability diameter of the cladding fuel particles and the core of claim 5, wherein: is made of acrylic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911362915.6A CN113049455B (en) | 2019-12-26 | 2019-12-26 | Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911362915.6A CN113049455B (en) | 2019-12-26 | 2019-12-26 | Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113049455A true CN113049455A (en) | 2021-06-29 |
| CN113049455B CN113049455B (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911362915.6A Active CN113049455B (en) | 2019-12-26 | 2019-12-26 | Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN113049455B (en) |
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| CN113049455B (en) | 2023-04-14 |
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