CN115206558A - Fuel assembly lower tube seat based on multilayer staggered lattice structure, filter body and application - Google Patents
Fuel assembly lower tube seat based on multilayer staggered lattice structure, filter body and application Download PDFInfo
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- CN115206558A CN115206558A CN202210795473.XA CN202210795473A CN115206558A CN 115206558 A CN115206558 A CN 115206558A CN 202210795473 A CN202210795473 A CN 202210795473A CN 115206558 A CN115206558 A CN 115206558A
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- lattice structure
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- 239000000446 fuel Substances 0.000 title claims abstract description 39
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000010146 3D printing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 50
- 239000011159 matrix material Substances 0.000 description 31
- 230000008901 benefit Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/3206—Means associated with the fuel bundle for filtering the coolant, e.g. nozzles, grids
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
- G21C3/3305—Lower nozzle
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/34—Spacer grids
- G21C3/3424—Fabrication of spacer grids
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a fuel assembly lower tube seat based on a multilayer staggered lattice structure, a filter body and application, wherein the fuel assembly lower tube seat based on the multilayer staggered lattice structure comprises a lower tube seat outer frame body, and a lattice connecting plate is arranged on the inner side of the lower tube seat outer frame body; the lattice connecting plate at least comprises two layers of lattice structures, and the drain holes of each layer of lattice structure are staggered mutually, so that no straight line penetrates through the through holes on the upper surface and the lower surface of the lattice connecting plate. Because the lattice connecting plate of the invention has no through hole which linearly penetrates through the lattice connecting plate, compared with the pore plate filtration, the foreign matter filtration performance of the lower pipe seat is improved; meanwhile, the foreign matter capturing performance is further enhanced by the lattice connection structure densely distributed among the layers, foreign matters in reactor cooling water can be effectively removed through modes such as material changing and the like, and the water quality condition in the reactor is improved. The invention can not only meet the structural strength and the cooling water flow capacity, but also improve the filtering performance, effectively reduce the weight of the lower pipe seat and improve the shock absorption performance to impact.
Description
Technical Field
The invention relates to the technical field of nuclear reactor fuel assemblies, in particular to a fuel assembly lower tube seat based on a multilayer staggered lattice structure, a filter body and application.
Background
The bottom nozzle is an important structural component carried by the middle and lower part of the nuclear fuel assembly, and the main functions of the bottom nozzle comprise: the important component of the fuel assembly framework provides an interface for connecting the guide tube and the instrument tube, supports and positions the fuel assembly and ensures the mechanical property; the flow distribution is carried out on the coolant flowing into the fuel assembly, so that the uniformity of inlet flow is ensured; foreign matters in a primary circuit system are prevented from entering a fuel assembly along with a coolant to cause the abrasion and the damage of the foreign matters of the fuel rod cladding; preventing the fuel rods from falling down from the fuel assembly. The reasonable design of the lower pipe seat structure is important for ensuring the safety of the whole structure of the fuel assembly.
In the design of the lower pipe seat of the prior related fuel assembly, or a thin filter plate is adopted for filtering, the filter plate can only filter out foreign matters with the size larger than that of the hole of the filter plate, and slender strip-shaped foreign matters with the cross section size smaller than that of the filter hole or other foreign matters with smaller sizes can not be captured, and the design does not integrate and comprehensively consider the structural strength and the filtering performance of the filter plate; or the filtering structure based on the filtering ribs has stable structure, but has the defects of too complicated process, rib processing and time consumption; or need redesign to prevent the foreign matter grillage, with trompil formula lower tube seat matched with, realize the filter effect, have with high costs shortcoming.
Disclosure of Invention
The invention aims to provide a fuel assembly lower pipe seat based on a multilayer staggered lattice structure, which can meet the structural strength and the cooling water flow capacity, improve the filtering performance, effectively reduce the weight of the lower pipe seat and improve the shock absorption performance to impact.
In addition, the invention also provides a filter body and application thereof.
The invention is realized by the following technical scheme:
the lower tube seat of the fuel assembly based on the multilayer staggered lattice structure comprises an outer frame body of the lower tube seat, wherein a lattice connecting plate is arranged on the inner side of the outer frame body of the lower tube seat, and the outer wall of the lattice connecting plate is directly connected with the inner wall of the outer frame body of the lower tube seat;
the lattice connecting plate at least comprises two layers of lattice structures, and the drain holes of each layer of lattice structure are staggered mutually, so that no straight line penetrates through the through holes on the upper surface and the lower surface of the lattice connecting plate.
The water flow holes are through holes in the dot matrix unit in the dot matrix structure, the dot matrix unit is provided with a plurality of connecting rods which are connected with a surrounding wall in an ending mode, and the inner sides of the connecting rods are the through holes.
Because the lattice connecting plate of the invention has no through hole which linearly penetrates through the upper surface and the lower surface of the lattice connecting plate, the lattice connecting plate can effectively capture foreign matters in various shapes, and compared with the filtering of a pore plate, the filtering performance of the foreign matters of the lower pipe seat is improved; meanwhile, the foreign matter capturing performance is further enhanced by the lattice connection structure densely distributed among the layers, foreign matters in reactor cooling water can be effectively removed through modes such as material changing and the like, and the water quality condition in the reactor is improved.
Meanwhile, the dot matrix connecting plate has strong structural stability.
And the whole lattice connecting plate is of a lattice structure with high porosity, and on the basis of realizing the connecting function of the guide pipe and the lower pipe seat, the shock resistance and the seismic performance of the lower pipe seat part are improved by virtue of the elasticity of the structural characteristics of the lattice connecting plate.
In summary, the lower pipe seat of the fuel assembly can meet the structural strength and the cooling water flow capacity, improve the filtering performance, effectively reduce the weight of the lower pipe seat and improve the shock absorption performance to impact.
Furthermore, a plurality of connectors are adopted to connect the layers of each layer of lattice structure, and the connectors and lattice units in the lattice structure form a polyhedral structure.
The plurality of connectors form an interlayer lattice connection structure.
The multi-layer lattice structure and the interlayer lattice connection structure without the through holes can effectively capture foreign matters in various shapes, further improve the filtering effect, ensure the stability and the strength of the overall structure of the lower tube seat and ensure the stable structure of the conical structure, preferably the tetrahedral structure, of the polyhedral structure.
Further, the shape of the lattice unit in the lattice structure includes a triangle or a square.
Further, the triangle includes an equilateral triangle or an isosceles triangle.
Further, the square is rectangular or square, preferably square.
Preferably, the lattice structure has lattice elements in the shape of equilateral triangles.
Further, the cross-section of the connection bars constituting the lattice unit in the lattice structure includes a circle or a square.
Preferably the cross-section of the connecting rod comprises a circular shape with less resistance.
The device further comprises a guide tube seat and an instrument tube seat, wherein the guide tube seat and the instrument tube seat are arranged in the dot matrix connecting plate.
Further, the lower pipe seat of the fuel assembly is prepared by adopting a 3D printing technology.
The 3D printing technology is the prior art, the overall structure of the fuel assembly lower tube seat can be designed firstly and prepared through 3D printing, namely the cross-sectional shape, the area and the length of the connecting rod in the dot matrix unit can be adaptively modified according to the functional requirements of the fuel assembly lower tube seat, and the adjustment of the flow area, the key position strength and the like can be realized. Under the condition of keeping no straight line penetrating through holes in the height direction (the flowing direction of the coolant), the lattice shape and the number of layers of each layer staggered with each other can be adaptively modified according to the functional requirements of the lower tube seat of the fuel assembly, so that the requirements of different types of fuel assemblies are met.
The utility model provides a filter body, filter the body and include two-layer lattice structure at least, the discharge orifice of each layer lattice structure staggers each other, and the through-hole that no straight line runs through filter body upper surface and lower surface in the messenger filters the body, and adopts a plurality of connectors to connect between each layer lattice structure's the layer, the connector constitutes polyhedral structure with the lattice unit in the lattice structure.
Use of a filter body for fluid filtration.
The filter body can be used for filtering the lower pipe base of the fuel assembly and can also be used for filtering fluid by other structures.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the lattice connecting plate is of a multilayer staggered lattice structure, no straight-line through hole is formed in all direction views of the upper surface and the lower surface of the connecting plate on the whole structure, foreign matter filtering performance of the lower tube seat is remarkably improved, foreign matter capturing performance is further enhanced by the lattice connecting structure densely distributed among layers, foreign matters in reactor cooling water can be effectively removed through modes of material changing and the like, and water quality conditions in the reactor are improved.
2. The lattice support structure between the layers in the lattice connecting plate obviously reduces the total weight of the lower pipe seat, reduces the use of materials and improves the economic benefit of products on the premise of ensuring the integral structural strength of the lower pipe seat.
3. The lattice connecting plate is of a lattice structure with high porosity, and on the basis of realizing the connecting function of the guide pipe and the lower pipe seat, the shock resistance and the seismic performance of the lower pipe seat part are improved by virtue of the elasticity of the structural characteristics of the lattice connecting plate.
4. The shape of the lattice, the number of layers of the lattice and the shape of the cross section of the connecting rod in the lattice unit can be adjusted, and the overall structural strength and the foreign matter filtering capacity can be adjusted by adding or subtracting the number of layers of the lattice structure according to the actual filtering requirement; the requirements of different circulation performances are met by adjusting the shape of the lattice and the shape of the section of the connecting rod.
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 principles of the invention. In the drawings:
FIG. 1 is a schematic view of the construction of a lower nozzle of a fuel assembly according to the present invention;
FIG. 2 is a first schematic view of a multi-layer lattice structure of example 1; wherein, the dot-dash lines between layers represent the staggered position relation of the dot matrixes of each layer;
FIG. 3 is a second schematic view of the multi-layered lattice structure of example 1;
FIG. 4 is a schematic view of each layer in the multi-layer lattice structure of example 1;
FIG. 5 is a top view of a lower nozzle of the fuel assembly of example 2;
FIG. 6 isbase:Sub>A sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic view of a multilayer lattice structure in example 2; the dot-dash line between layers indicates a positional relationship in which the dot matrixes of the layers are staggered from each other.
Reference numbers and corresponding part names in the drawings:
1-guide tube seat, 2-instrument tube seat, 3-lattice connecting plate and 4-lower tube seat outer frame body.
Detailed Description
In order 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 examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in figure 1, the fuel assembly lower tube seat based on the multilayer staggered lattice structure comprises a lower tube seat outer frame body 4, a guide tube seat 1 and an instrument tube seat 2, wherein a lattice connecting plate 3 is arranged on the inner side of the lower tube seat outer frame body 4.
The lower tube seat outer frame body 4 forms the basic appearance of the lower tube seat, two pin holes are designed below the lower tube seat outer frame body for positioning a fuel assembly in a reactor core, and the dot matrix connecting plate 3 is directly connected with the lower tube seat outer frame body 4; the guide tube seat 1 and the instrument tube seat 2 are arranged in the dot matrix connecting plate 3, are integrally processed with the dot matrix connecting plate 3 and the lower tube seat outer frame body 4, can adopt integral integrated processing modes such as casting or 3D printing, and preferably adopts 3D printing.
The dot matrix connecting plate 3 at least comprises two layers of dot matrix structures, and drain holes of the dot matrix structures are staggered mutually, so that no straight line penetrates through holes in the upper surface and the lower surface of the dot matrix connecting plate 3 in the dot matrix connecting plate 3.
In this embodiment, in order to improve the structural stability of the dot matrix connection board 3 and further improve the filtering effect of the dot matrix connection board 3, a plurality of connectors are used to connect the layers of each layer of dot matrix structure, the connectors and the dot matrix units in the dot matrix structure form a polyhedral structure, the connectors are rod-shaped structures, and preferably have the same shape as the connecting rods in the dot matrix units.
The shape of the lattice unit in the lattice structure comprises a triangle or a square, and can be other shapes; the triangle comprises an equilateral triangle or an isosceles triangle, preferably an equilateral triangle, and the square preferably a square.
The cross-section of the connecting rods constituting the lattice unit in the lattice structure may be circular or square, or may be other shapes, preferably circular.
As shown in fig. 2 to fig. 4, the present embodiment is described by a specific dot matrix connection board 3:
the dot matrix connecting plate 3 of the embodiment adopts three layers of dot matrix structures which are staggered with each other and have different shapes, and the edge of the dot matrix connecting plate 3 is connected with the outer frame body 4 of the lower pipe seat; the cross section of the connecting rods forming the lattice units is circular, which is more beneficial to reducing flow resistance compared with square, each layer adopts different shapes to effectively capture foreign matters in various shapes, as shown in figures 2-4, the lattice unit of the first layer is square, one diagonal of the square is provided with a connecting rod, the lattice unit of the second layer is regular triangle, the lattice unit of the third layer is square, one diagonal of the square is provided with a connecting rod, the connecting rod is mutually vertical to the diagonal connecting rod of the square in the first layer, the staggered three-layer lattice structure ensures that the lattice connecting plate 3 has no through hole penetrating through the upper surface and the lower surface, and meanwhile, the connecting body between the first layer and the second layer and the lattice unit of the second layer form a similar tetrahedron connecting structure; the connector between the second layer and the third layer and the lattice unit of the third layer form a similar tetrahedron connection structure, and the similar tetrahedron connection structure consists of a triangle in the lattice unit and 3 rod-shaped connectors; the tetrahedron-like connection structure between the layers further enhances foreign matter capture.
The lattice connection board 3 of this embodiment is the lattice structure of the three-layer different shapes of staggered arrangement each other, has realized that even lattice connection board 3 does not have the straight line to run through the through-hole of upper and lower surface on overall structure, is showing the foreign matter filtering quality who has promoted the lower tube socket, and the lattice connection structure of the close packing has further strengthened the foreign matter and has caught the performance between the layer simultaneously, and lattice connection structure (class tetrahedron connection structure) has improved lattice connection board 3's structural stability.
Moreover, the lattice connecting plate 3 is of a lattice structure with large porosity as a whole, and on the basis of realizing the connecting function of the guide pipe and the lower pipe seat, the shock resistance and the seismic performance of the lower pipe seat part are improved by virtue of the elasticity of the structural characteristics of the lattice connecting plate.
Therefore, this embodiment the fuel assembly nozzle is in order to realize nozzle's structural strength, circulation performance and filtration performance comprehensive consideration, when guaranteeing nozzle cooling water circulation ability and structural strength, further strengthens nozzle's foreign matter filtration performance to can effectively reduce nozzle's weight and promote the bradyseism performance to the impact, provide effectual safety guarantee for fuel assembly in-pile operation.
Example 2:
this example is based on example 1, and differs from example 1 in that:
the dot matrix connecting plate 3 has different structures, and is specific:
the lattice connection plate 3 has the advantages that each layer of lattice structure lattice units are identical in shape and are regular triangles, the structure is more stable, and 4 layers of lattices are arranged in a staggered mode, so that the lattice connection plate 3 does not directly penetrate through holes in the upper surface and the lower surface, and as shown in fig. 5-7, the foreign matter filtering performance of the lower pipe seat is fully ensured.
The dot matrix connecting plate 3 of this embodiment is the dot matrix structure of 4 layers of the same shape of staggered arrangement each other, has realized on overall structure that dot matrix connecting plate 3 does not have the through-hole that the straight line runs through upper and lower surface, is showing the foreign matter filtering quality who has promoted the lower tube socket, and the dot matrix connecting structure of layer thick cloth has further strengthened the foreign matter and has caught the performance simultaneously, and dot matrix connecting structure (kind tetrahedron connecting structure) has improved dot matrix connecting plate 3's structural stability. Meanwhile, the whole lattice connecting plate 3 is of a lattice structure with high porosity; meanwhile, the impact resistance and the seismic performance of the lower pipe seat part are improved by means of the elasticity of the structural characteristics of the lower pipe seat part.
Example 3:
a filter body at least comprises two layers of lattice structures, drain holes of each layer of lattice structures are staggered mutually, no straight line penetrates through holes in the upper surface and the lower surface of the filter body in the filter body, a plurality of connectors are connected among layers of each layer of lattice structures, and the connectors and lattice units in the lattice structures form a polyhedral structure.
The filter body of the embodiment can be used for filtering the lower pipe base of the fuel assembly, and can also be used for filtering fluid by other structures.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary 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.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the function and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.
Claims (10)
1. The fuel assembly lower tube seat based on the multilayer staggered lattice structure comprises a lower tube seat outer frame body (4), and is characterized in that a lattice connecting plate (3) is arranged on the inner side of the lower tube seat outer frame body (4);
the lattice connecting plate (3) at least comprises two layers of lattice structures, and drain holes of each layer of lattice structure are staggered mutually, so that no straight line penetrates through holes in the upper surface and the lower surface of the lattice connecting plate (3) in the lattice connecting plate (3).
2. The fuel assembly bottom nozzle base based on the multi-layer staggered lattice structure of claim 1, wherein the layers of each layer of lattice structure are connected by a plurality of connectors, and the connectors and the lattice units in the lattice structure form a polyhedral structure.
3. The fuel assembly bottom nozzle base based on the multi-layer staggered lattice structure of claim 2, wherein the structure of the connector comprises a conical structure.
4. The fuel assembly bottom nozzle base based on the multi-layer staggered lattice structure of claim 1, wherein the shape of the lattice unit in the lattice structure comprises a triangle or a square.
5. The fuel assembly bottom nozzle base based on the multi-layer staggered lattice structure of claim 4, wherein the triangle comprises an equilateral triangle or an isosceles triangle.
6. The fuel assembly bottom nozzle based on the multi-layer staggered lattice structure of claim 1, wherein the cross-section of the connecting rods constituting the lattice unit in the lattice structure comprises a circle or a square.
7. The fuel assembly bottom nozzle based on the multi-layer staggered lattice structure according to claim 1, further comprising a guide nozzle (1) and a meter nozzle (2), wherein the guide nozzle (1) and the meter nozzle (2) are arranged in the lattice connecting plate (3).
8. The fuel assembly bottom nozzle based on the multi-layer staggered lattice structure according to any one of claims 1 to 7, wherein the fuel assembly bottom nozzle is prepared by using a 3D printing technology.
9. The utility model provides a filter, its characterized in that, filter the body and include two-layer lattice structure at least, the discharge orifice of each layer lattice structure staggers each other, and no straight line runs through the through-hole of filter upper surface and lower surface in the messenger filters the body, and adopts a plurality of connectors to connect between the layer of each layer lattice structure, the connector constitutes polyhedral structure with the lattice unit in the lattice structure.
10. Use of a filter fluid according to claim 9 in fluid filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795473.XA CN115206558B (en) | 2022-07-07 | 2022-07-07 | Fuel assembly lower tube seat based on multilayer staggered lattice structure, filter body and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795473.XA CN115206558B (en) | 2022-07-07 | 2022-07-07 | Fuel assembly lower tube seat based on multilayer staggered lattice structure, filter body and application |
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| Publication Number | Publication Date |
|---|---|
| CN115206558A true CN115206558A (en) | 2022-10-18 |
| CN115206558B CN115206558B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210795473.XA Active CN115206558B (en) | 2022-07-07 | 2022-07-07 | Fuel assembly lower tube seat based on multilayer staggered lattice structure, filter body and application |
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| CN103403811A (en) * | 2011-10-14 | 2013-11-20 | 中科华核电技术研究院有限公司 | Bottom nozzle filter device and debris-resistant bottom nozzle using the device |
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| CN107240424A (en) * | 2017-05-22 | 2017-10-10 | 岭东核电有限公司 | A kind of fuel assembly |
| CN107848900A (en) * | 2015-07-22 | 2018-03-27 | 亚世科化学有限合伙公司 | Ceramic filter and the method for forming the filter |
| CN111041459A (en) * | 2019-12-25 | 2020-04-21 | 上海交通大学 | Hollow tube micro-lattice material with nano gradient structure and preparation method thereof |
| CN111957092A (en) * | 2020-08-07 | 2020-11-20 | 华南理工大学 | Porous ceramic filter with controllable pore gradual change and preparation method thereof |
| CN112861252A (en) * | 2020-12-24 | 2021-05-28 | 中国航空工业集团公司成都飞机设计研究所 | Self-defined lattice standard unit and lattice structure |
| CN113362976A (en) * | 2021-06-04 | 2021-09-07 | 中国核动力研究设计院 | Efficient filtering lower pipe seat, fuel assembly and nuclear reactor |
| KR102387451B1 (en) * | 2021-06-04 | 2022-04-15 | 창원대학교 산학협력단 | Filter for collecting microparticle having a three-dimensional lattice structures |
-
2022
- 2022-07-07 CN CN202210795473.XA patent/CN115206558B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403811A (en) * | 2011-10-14 | 2013-11-20 | 中科华核电技术研究院有限公司 | Bottom nozzle filter device and debris-resistant bottom nozzle using the device |
| CN104575628A (en) * | 2014-12-19 | 2015-04-29 | 上海核工程研究设计院 | Fuel assembly lower tube seat with double foreign matter prevention functions |
| CN107848900A (en) * | 2015-07-22 | 2018-03-27 | 亚世科化学有限合伙公司 | Ceramic filter and the method for forming the filter |
| CN206163129U (en) * | 2016-11-04 | 2017-05-10 | 中广核研究院有限公司 | Fuel assembly and tube socket and blocking net subassembly of being applied to tube socket thereof |
| CN107240424A (en) * | 2017-05-22 | 2017-10-10 | 岭东核电有限公司 | A kind of fuel assembly |
| CN111041459A (en) * | 2019-12-25 | 2020-04-21 | 上海交通大学 | Hollow tube micro-lattice material with nano gradient structure and preparation method thereof |
| CN111957092A (en) * | 2020-08-07 | 2020-11-20 | 华南理工大学 | Porous ceramic filter with controllable pore gradual change and preparation method thereof |
| CN112861252A (en) * | 2020-12-24 | 2021-05-28 | 中国航空工业集团公司成都飞机设计研究所 | Self-defined lattice standard unit and lattice structure |
| CN113362976A (en) * | 2021-06-04 | 2021-09-07 | 中国核动力研究设计院 | Efficient filtering lower pipe seat, fuel assembly and nuclear reactor |
| KR102387451B1 (en) * | 2021-06-04 | 2022-04-15 | 창원대학교 산학협력단 | Filter for collecting microparticle having a three-dimensional lattice structures |
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| Publication number | Publication date |
|---|---|
| CN115206558B (en) | 2024-04-19 |
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