CN218768759U - Full-size pressurized water reactor simulation fuel assembly - Google Patents
Full-size pressurized water reactor simulation fuel assembly Download PDFInfo
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- CN218768759U CN218768759U CN202221486971.8U CN202221486971U CN218768759U CN 218768759 U CN218768759 U CN 218768759U CN 202221486971 U CN202221486971 U CN 202221486971U CN 218768759 U CN218768759 U CN 218768759U
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Abstract
The utility model discloses a full-size pressurized water reactor simulation fuel assembly, which comprises a framework, a simulation upper pipe seat, a simulation grillwork and a simulation lower pipe seat, wherein the simulation upper pipe seat, the simulation grillwork and the simulation lower pipe seat are arranged on the framework; and stainless steel rods are arranged on the outermost ring of the simulation grid frame to serve as simulation fuel rods. The appearance, the structure and the size of the simulated fuel assembly provided by the embodiment are consistent with those of a real fuel assembly, the simulated fuel assembly provided by the embodiment can replace the outline of the fuel assembly, can be used for verifying the measurement function and the technical index of the outline size of the fuel assembly of the pool edge inspection device, and provides technical support for the development of the pool edge inspection device.
Description
Technical Field
The utility model belongs to the technical field of nuclear fuel assembly makes the inspection, concretely relates to full-size pressurized water reactor simulation fuel assembly.
Background
In the fuel pool side inspection process, the diameter of a fuel rod needs to be simulated for the fuel assembly after irradiation, the width of a simulation lattice grid, the oxidation film of the simulation fuel rod and the damage condition of the simulation fuel rod are measured, the fuel assembly after irradiation has radioactivity, all characteristic parameters cannot be obtained, the inspection function and the technical index of the pool side inspection system cannot be verified by the fuel assembly after true irradiation, and the measurement of the overall dimension of the fuel assembly of the fuel pool side inspection system, the measurement of the diameter of the simulation fuel rod, the measurement of the oxidation film of the simulation fuel rod and the ultrasonic detection function and the measurement precision verification of the damage of the simulation fuel rod need to be realized by the simulation fuel assembly.
Therefore, in the process of developing the pool-side inspection technology research and equipment research and development of the fuel assembly after irradiation of the nuclear power station, a simulated fuel assembly for simulating a real pressurized water reactor fuel assembly needs to be developed to verify the function and detection technical index of an inspection device.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a full-scale pressurized water reactor fuel assembly that simulates. The utility model provides a simulation fuel assembly, its external dimension, structure are unanimous with true fuel assembly, can replace true fuel assembly appearance profile for verify the fuel assembly external dimension measurement function and the technical index of pond limit inspection device, provide the technical support for pond limit inspection device development.
The utility model discloses a following technical scheme realizes:
a full-size pressurized water reactor simulation fuel assembly comprises a framework, a simulation upper pipe seat, a simulation grillwork and a simulation lower pipe seat, wherein the simulation upper pipe seat, the simulation grillwork and the simulation lower pipe seat are installed on the framework;
and stainless steel rods are arranged at the outermost ring of the simulation grid frame to serve as simulation fuel rods.
As the preferred embodiment, the framework of the utility model comprises 4 stainless steel square steels and stainless steel balancing weights.
As a preferred embodiment, the simulation grillwork of the present invention is made of stainless steel plates.
As a preferred embodiment, the number, the outer dimensions and the positions of the simulated grids of the present invention are consistent with those of the grids of the real fuel assemblies.
As a preferred embodiment, the simulated grid of the present invention comprises a first part and a second part;
the first component and the second component are respectively fixedly installed on the framework through bolts. The utility model discloses a simulation framework adopts split type design, convenient to detach and installation.
As a preferred embodiment, the simulation fuel rod of the present invention is divided into two sections, and each section is fixed to the simulation grid by a screw.
As a preferred embodiment, the appearance structure, the length and the diameter of the simulation fuel rod of the utility model are consistent with those of the fuel rod of the real fuel assembly.
As a preferred embodiment, the appearance structure, the interface characteristics and the size of the simulated upper tube base and the simulated lower tube base of the utility model are consistent with those of the upper tube base and the lower tube base of the real fuel assembly.
As a preferred embodiment, the simulated upper tube seat and the simulated lower tube seat of the present invention are connected to the framework by screw threads.
As a preferred embodiment, the simulation bottom nozzle of the present invention is provided with a positioning pin hole for mounting and fixing other fuel simulation members on the bottom of the fuel assembly.
The utility model discloses have following advantage and beneficial effect:
the utility model provides a simulation fuel assembly can be used for verifying the function and the technical index of fuel assembly inspection device after the irradiation, provides the technical support for fuel assembly inspection device's after the irradiation development.
The utility model provides a simulation fuel assembly has represented large-scale advanced pressurized water reactor nuclear power station fuel assembly appearance, structure and size, has realized that fuel assembly pool limit inspection device is verified and technical indicator is verified large-scale advanced pressurized water reactor nuclear power station fuel assembly length measurement, the crooked and distortion measuring function of subassembly under the laboratory condition.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a simulated fuel assembly according to an embodiment of the present invention.
Fig. 2 is a schematic view of the simulation fuel assembly skeleton and the upper simulation bottom tube seat of the embodiment of the present invention.
Fig. 3 is a schematic view of the simulation fuel assembly framework and the simulation grid in accordance with the embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-simulated upper pipe seat, 2-simulated fuel rod, 3-simulated grid, 31-first part, 32-second part, 33-bolt, 4-simulated lower pipe seat, 5-framework, 51-square steel and 52-balancing weight.
Detailed Description
Hereinafter, the term "includes" or "may include" used in various embodiments of the present invention indicates the presence of functions, operations or elements of the present invention, and does not limit the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to refer only to the particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combination of the foregoing.
In various embodiments of the present invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Examples
In order to verify the function and technical indexes of the pool side inspection device, the embodiment provides a full-size pressurized water reactor simulated fuel assembly, the shape, structure and size of the simulated fuel assembly provided by the embodiment are consistent with those of a real fuel assembly, the outline of the fuel assembly can be replaced, the full-size pressurized water reactor simulated fuel assembly can be used for verifying the function and technical indexes of measuring the outline size of the fuel assembly of the pool side inspection device, and technical support is provided for the development of the pool side inspection device.
As shown in fig. 1, the simulated fuel assembly of the present embodiment mainly comprises a simulated upper nozzle 1, a simulated grid 3 and a simulated lower nozzle 4 mounted on a skeleton 5.
The simulation fuel assembly framework 5 of the embodiment is manufactured by 4 stainless steel square steels 51 and stainless steel balancing weights 52 and is used for supporting and fixing each assembly of the simulation fuel assembly.
The stainless steel rods are arranged on the outermost ring of the simulated fuel assembly of the embodiment to serve as simulated fuel rods (i.e. the stainless steel rods are arranged on the outermost ring of the simulated grids 3 to serve as the simulated fuel rods 2), and the appearance structure, length and diameter of the simulated fuel rods 2 are consistent with those of the real fuel assembly.
The simulation grids 3 of the present embodiment are made of stainless steel plates, and the number, the outer dimensions and the positions of the simulation grids 3 are consistent with those of the grids of the real fuel assemblies.
The appearance structure, the interface characteristics and the size of the simulated upper tube socket 1 and the simulated lower tube socket 4 of the embodiment are consistent with the size of CAP 1000 (the upper and lower tube sockets of a large advanced pressurized water reactor nuclear power station fuel assembly), the simulated upper tube socket 1 and the simulated lower tube socket 4 of the embodiment are connected with a framework bolt, and the simulated lower tube socket is easy to mount, fix and disassemble.
The dummy bottom nozzle 4 of the present embodiment is provided with a pilot pin hole to enable mounting and fixing of other fuel dummy members on the bottom of the fuel assembly.
As shown in fig. 2, the fuel assembly skeleton 5 of the present embodiment is connected to the dummy top nozzle 1 or dummy bottom nozzle 4 by a flange plate welded to the end of the skeleton.
As shown in fig. 3, the simulation lattice 3 of the present embodiment is composed of two members (the first member 31 and the second member 33 shown in fig. 3), the two members are fixed to the frame 5 by bolts 33, and the size and the position of the simulation lattice 3 of the present embodiment are identical to those of the simulation lattice of the real fuel assembly. In this embodiment, the simulation framework 3 adopts a split design, which is convenient for the installation and disassembly of the simulation framework 3. In a further preferred embodiment, the two parts of the simulation lattice 3 may be of a symmetrical structure.
The simulation fuel rod 2 of the present embodiment is arranged at the outermost ring of the simulation lattice 3, and the simulation fuel rod 2 is divided into two sections, which are respectively fixed on the simulation lattice 3 by screw threads.
The full-size simulated fuel assembly provided by the embodiment represents the appearance, structure and size of a fuel assembly of a large-scale advanced pressurized water reactor nuclear power station, meets the requirements of function verification and technical index verification of a pool-side inspection device, and is successfully applied to installation and debugging and measurement process tests of a fuel assembly comprehensive measurement device as a detected object.
The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The full-size pressurized water reactor simulated fuel assembly is characterized by comprising a framework (5), and a simulated upper pipe seat (1), a simulated grillwork (3) and a simulated lower pipe seat (4) which are arranged on the framework (5);
stainless steel rods are arranged on the outermost ring of the simulation lattice frame (3) to serve as simulation fuel rods (2);
the simulation lattice (3) comprises a first part (31) and a second part (32);
the first component (31) and the second component (32) are respectively fixedly installed on the framework (5) through bolts (33);
the first part (31) and the second part (32) are of symmetrical structure.
2. A full scale pressurized water reactor simulated fuel assembly according to claim 1 wherein said skeleton (5) comprises 4 stainless steel square bars (51) and stainless steel weights (52).
3. The full-scale pressurized water reactor simulated fuel assembly as claimed in claim 1, characterized in that the simulated grid (3) is made of stainless steel plate.
4. The full-scale pressurized water reactor simulated fuel assembly according to claim 1, wherein the number, the outer dimensions and the positions of the simulated grids (3) are consistent with grids of a real fuel assembly.
5. The full-scale pressurized water reactor fuel simulating assembly according to claim 1, characterized in that the simulating fuel rod (2) is divided into two sections, and is respectively fixed on the simulating grid (3) through threads.
6. A full size pressurized water reactor simulated fuel assembly according to any of claims 1 to 5 wherein the simulated fuel rods (2) have a configuration, length and diameter corresponding to the fuel rods of a real fuel assembly.
7. The full-scale PWR simulation fuel assembly according to any of claims 1-5, characterized in that the simulated top nozzle (1) and simulated bottom nozzle (4) have the same outer shape, interface features, dimensions as the top nozzle and the bottom nozzle of the real fuel assembly.
8. The full scale PWR simulation fuel assembly of any of claims 1-5, wherein the simulated top nozzle (1) and simulated bottom nozzle (4) are screwed to the skeleton (5).
9. A full size PWR simulation fuel assembly according to any of claims 1-5, characterized by the fact that the simulation bottom nozzle (4) is provided with dowel holes for mounting and fixing other fuel simulation pieces at the bottom of the fuel assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486971.8U CN218768759U (en) | 2022-06-14 | 2022-06-14 | Full-size pressurized water reactor simulation fuel assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486971.8U CN218768759U (en) | 2022-06-14 | 2022-06-14 | Full-size pressurized water reactor simulation fuel assembly |
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| CN218768759U true CN218768759U (en) | 2023-03-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999688A (en) * | 2022-06-14 | 2022-09-02 | 中国核动力研究设计院 | Scaling simulation fuel assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999688A (en) * | 2022-06-14 | 2022-09-02 | 中国核动力研究设计院 | Scaling simulation fuel assembly |
| CN114999688B (en) * | 2022-06-14 | 2024-04-26 | 中国核动力研究设计院 | Scaling simulation fuel assembly |
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