CN115206558B - 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
- Publication number
- CN115206558B CN115206558B CN202210795473.XA CN202210795473A CN115206558B CN 115206558 B CN115206558 B CN 115206558B CN 202210795473 A CN202210795473 A CN 202210795473A CN 115206558 B CN115206558 B CN 115206558B
- Authority
- CN
- China
- Prior art keywords
- lattice
- connecting plate
- tube seat
- fuel assembly
- lower tube
- 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.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000010146 3D printing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 8
- 239000000498 cooling water Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 47
- 239000011159 matrix material Substances 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 230000000694 effects Effects 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
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
Landscapes
- 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 thereof; the lattice connecting plate at least comprises two layers of lattice structures, and the flow holes of each layer of lattice structure are staggered, so that no straight line penetrates through the through holes on the upper surface and the lower surface of the lattice connecting plate in the lattice connecting plate. As the lattice connecting plate has no through holes penetrating through the lattice connecting plate in a straight line, compared with the pore plate filtration, the foreign matter filtration performance of the lower tube seat is improved; meanwhile, the lattice connection structure densely distributed among layers further enhances the foreign matter capturing performance, can effectively remove foreign matters in reactor cooling water in a mode of changing materials and the like, and improves the water quality condition in the reactor. The invention can not only meet the structural strength and the cooling water circulation capacity, but also improve the filtering performance, and can effectively reduce the weight of the lower tube seat and improve the shock absorption performance to the 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 lower tube seat is an important structural component carried by the lower part of the nuclear fuel assembly, and the main functions of the lower tube seat include: important components of the fuel assembly framework are provided with interfaces for connecting the guide pipe and the instrument pipe, and the fuel assembly is supported and positioned, so that the mechanical property is ensured; the coolant flowing into the fuel assembly is distributed in flow, so that the uniformity of the inlet flow is ensured; foreign matter in a loop system is prevented from entering the fuel assembly along with the coolant, so that the foreign matter on the cladding of the fuel rod is prevented from being abraded and damaged; preventing the fuel rod from falling downward from the fuel assembly. The reasonable design of the lower tube seat structure is important to ensuring the safety of the whole structure of the fuel assembly.
In the current design of the lower tube seat of the related fuel assembly, or the thin filter plate is adopted for filtering, the filter plate can only filter out the foreign matters with the size larger than the filter plate holes, and the long and thin strip-shaped foreign matters with the cross section size smaller than the filter hole size 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 filter performance of the filter plate; or a filtering structure based on the filtering ribs, the structure is stable, but the disadvantage is that the process is too complex, and the processing of the ribs is time-consuming; or the foreign matter prevention grid is needed to be redesigned and matched with the open-pore lower tube seat, so that the filtering effect is realized, and the defect of high cost is overcome.
Disclosure of Invention
The invention aims to provide a fuel assembly lower tube seat based on a multilayer staggered lattice structure, which not only can meet the structural strength and cooling water circulation capacity, but also can improve the filtering performance, and can effectively reduce the weight of the lower tube 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 fuel assembly lower tube seat based on the multilayer staggered lattice structure comprises a lower tube seat outer frame body, wherein a lattice connecting plate is arranged on the inner side of the lower tube seat outer frame body, and the outer wall of the lattice connecting plate is directly connected with the inner wall of the tube seat outer frame body;
The lattice connecting plate at least comprises two layers of lattice structures, and the flow holes of each layer of lattice structure are staggered, so that no straight line penetrates through the through holes on the upper surface and the lower surface of the lattice connecting plate in the lattice connecting plate.
The flow holes are through holes in a dot matrix unit in a dot matrix structure, the dot matrix unit is provided with a plurality of connecting rods which are connected in a tail-end mode and are connected in a surrounding city, and the inner sides of the connecting rods are through holes.
As the dot matrix connecting plate has no through holes penetrating through the upper surface and the lower surface of the dot matrix connecting plate in a straight line, the dot matrix connecting plate can effectively capture foreign matters in various shapes, and compared with orifice plate filtration, the foreign matter filtering performance of the lower tube seat is improved; meanwhile, the lattice connection structure densely distributed among layers further enhances the foreign matter capturing performance, can effectively remove foreign matters in reactor cooling water in a mode of changing materials and the like, and improves the water quality condition in the reactor.
Meanwhile, the lattice connecting plate has stronger structural stability.
And the whole lattice connecting plate is of a lattice structure with larger porosity, and on the basis of realizing the connecting function of the guide pipe and the lower pipe seat, the shock resistance and the earthquake resistance of the lower pipe seat part are improved by means of the elasticity of the self structural characteristics.
In conclusion, the lower tube seat of the fuel assembly can meet the structural strength and the cooling water circulation capacity, can improve the filtering performance, and can effectively reduce the weight of the lower tube seat and improve the shock absorption performance to impact.
Further, the layers of each layer of lattice structure are connected by adopting a plurality of connectors, 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 without through holes and the interlayer lattice connection structure can effectively capture foreign matters in various shapes, further improve the filtering effect, ensure the stability and strength of the whole structure of the lower tube seat by forming a polyhedral structure by the lattice units in the connecting body and the lattice structure, and ensure the stability and strength of the whole structure of the lower tube seat, wherein the polyhedral structure can be various cone-shaped structures which are beneficial to the stability of the structure, and is preferably a tetrahedron structure.
Further, the shape of the lattice unit in the lattice structure includes triangle or square.
Further, the triangle includes an equilateral triangle or an isosceles triangle.
Further, the square is rectangular or square, preferably square.
Preferably, the lattice unit in the lattice structure is in the shape of an equilateral triangle.
Further, the cross section of the connecting rod 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.
Further, the device also comprises a guide tube seat and a meter tube seat, wherein the guide tube seat and the meter tube seat are arranged in the lattice connecting plate.
Further, the fuel assembly bottom nozzle is fabricated using 3D printing techniques.
The 3D printing technology is the prior art, the whole structure of the lower tube seat of the fuel assembly can be designed firstly to be prepared through 3D printing, namely, the section shape, the area and the length of the connecting rod in the lattice unit can be adaptively modified according to the functional requirement of the lower tube seat of the fuel assembly, and the adjustment of the flow area, the key position strength and the like can be realized. Under the condition that no straight through holes are formed in the height direction (the flowing direction of the coolant), the dot matrix shape and the number of layers of each layer staggered mutually can be adaptively modified according to the functional requirements of the lower tube seat of the fuel assembly, and the requirements of different types of fuel assemblies are met.
The utility model provides a filter, the filter includes two-layer lattice structure at least, and each layer lattice structure's flow hole staggers each other, makes in the filter no straight line run through the through-hole of filter upper surface and lower surface, and adopts a plurality of connectors to connect between each layer lattice structure's layer, the lattice unit in connector and the lattice structure constitutes the polyhedron structure.
Use of a filter body for filtering a fluid.
The filter body disclosed by the invention can be used for filtering a lower tube seat of a 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 through holes are formed in all direction views of the upper surface and the lower surface of the connecting plate on the integral structure, so that the foreign matter filtering performance of the lower tube seat is obviously improved, meanwhile, the lattice connecting structure densely distributed among layers further enhances the foreign matter capturing performance, foreign matters in reactor cooling water can be effectively removed through modes such as material changing, and the water quality condition in the reactor is improved.
2. The interlayer lattice support structure in the lattice connecting plate obviously reduces the total weight of the lower tube 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 tube seat.
3. The lattice connecting plate is integrally in a lattice structure with larger porosity, and on the basis of realizing the connecting function of the guide pipe and the lower pipe seat, the impact resistance and the earthquake resistance of the lower pipe seat part are improved by means of the elasticity of the structural characteristics of the lattice connecting plate.
4. The shape of the array, the number of layers of the array and the section shape of the connecting rod in the array unit can be adjusted, and the overall structural strength and the foreign matter filtering capacity can be adjusted by adding and subtracting the number of layers of the array structure according to the actual filtering requirement; the lattice shape and the cross section shape of the connecting rod are adjusted to meet the requirements of different circulation performances.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic view of a fuel assembly bottom nozzle of the present invention;
FIG. 2 is a schematic diagram of a multi-layered lattice structure in example 1; wherein, the dot-dash line between layers shows the position relation of each layer of dot matrix staggered with each other;
FIG. 3 is a schematic diagram of a multi-layered lattice structure in embodiment 1;
FIG. 4 is a schematic view of each layer in the multilayer lattice structure in example 1;
FIG. 5 is a top view of a fuel assembly bottom nozzle of example 2;
FIG. 6 is a cross-sectional view taken along the direction A-A in FIG. 5;
FIG. 7 is a schematic view of a multilayer lattice structure in example 2; wherein, the dot-dash line between layers shows the position relation of each layer lattice which is staggered.
In the drawings, the reference numerals and corresponding part names:
1-a guide tube seat, 2-a meter tube seat, 3-a lattice connecting plate and 4-a lower tube seat outer frame body.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1:
As shown in fig. 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 a meter 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 a basic shape of a 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 lattice 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 lattice connecting plate 3, are integrally processed with the lattice connecting plate 3 and the lower tube seat outer frame body 4, can adopt an integral processing mode such as casting or 3D printing, and are preferably 3D printing.
The lattice connecting plate 3 at least comprises two layers of lattice structures, and the flow holes of each layer of lattice structure are staggered, so that no through holes penetrating through the upper surface and the lower surface of the lattice connecting plate 3 in a straight line are formed in the lattice connecting plate 3.
In this embodiment, in order to improve the structural stability of the lattice connecting plate 3 and further improve the filtering effect of the lattice connecting plate 3, the layers of each layer of lattice structure are connected by adopting a plurality of connectors, the connectors and the lattice units in the lattice structure form a polyhedral structure, and the connectors are in rod-shaped structures, preferably have the same shape as the connecting rods in the lattice units.
The shape of the lattice unit in the lattice structure comprises a triangle or a square, and can also be other shapes; the triangle comprises an equilateral triangle or an isosceles triangle, preferably an equilateral triangle, and the square is preferably a square.
The cross section of the connecting rods constituting the lattice unit in the lattice structure comprises a circle or square, but can also be in other shapes, and is preferably a circle.
As shown in fig. 2 to 4, this embodiment is illustrated with a specific lattice connecting plate 3:
The lattice connecting plate 3 of the embodiment adopts three layers of lattice structures which are staggered with each other and have different shapes, and the edge of the lattice connecting plate 3 is connected with the outer frame body 4 of the lower tube seat; the cross section of the connecting rod forming the lattice unit is circular, compared with a square shape, the cross section is more favorable for reducing flow resistance, the layers adopt different shapes to effectively capture foreign matters in various shapes as shown in fig. 2-4, the lattice unit of the first layer is square, one diagonal line 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 line of the square is provided with a connecting rod, the connecting rod is mutually perpendicular to the square diagonal connecting rod in the first layer, and the three-layer lattice structure staggered with each other ensures that the lattice connecting plate 3 has no through holes penetrating through the upper surface and the lower surface, and meanwhile, a tetrahedron-like connecting structure is formed by a connecting body between the first layer and the second layer and the lattice unit of the second layer; the connection body between the second layer and the third layer and the lattice unit of the third layer form a tetrahedral connection structure, and the tetrahedral connection structure is composed of triangles and 3 rod-shaped connection bodies in the lattice unit; the interlayer tetrahedral connection structure further enhances foreign matter trapping.
The lattice connecting plate 3 of this embodiment is the lattice structure of three-layer staggered different shapes each other, has realized connecting lattice connecting plate 3 on overall structure and has no straight line through the through-hole of upper and lower surface, has showing the foreign matter filtering capability that has promoted the lower tube socket, and the lattice connection structure of gathering between the layers has further strengthened the foreign matter and has caught the performance simultaneously, and lattice connection structure (tetrahedron-like connection structure) has improved the structural stability of lattice connecting plate 3.
The lattice connecting plate 3 is of a lattice structure with large porosity, and on the basis of realizing the connecting function of the guide pipe and the lower pipe seat, the shock resistance and the earthquake resistance of the lower pipe seat part are improved by means of the elasticity of the structural characteristics of the lattice connecting plate.
Therefore, the fuel assembly lower tube seat realizes comprehensive consideration of the structural strength, the circulation performance and the filtering performance of the lower tube seat, further strengthens the foreign matter filtering performance of the lower tube seat while ensuring the circulation capacity and the structural strength of cooling water of the lower tube seat, can effectively reduce the weight of the lower tube seat and promote the shock absorption performance to impact, and provides effective safety guarantee for the operation in a fuel assembly stack.
Example 2:
This embodiment is based on embodiment 1, and differs from embodiment 1 in that:
the lattice connecting plate 3 has different structures, and is specifically:
the lattice units of each layer of lattice structure of the lattice connecting plate 3 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 connecting plate 3 does not directly penetrate through holes on the upper surface and the lower surface, and as shown in fig. 5-7, the foreign matter filtering performance of the lower tube seat is fully ensured.
The lattice connecting plate 3 of this embodiment is 4 layers of lattice structures of staggered same shape each other, has realized connecting lattice connecting plate 3 on overall structure and has no straight line through the through-hole of upper and lower surface, has showing the foreign matter filtering capability that has promoted the lower tube socket, and the lattice connection structure of gathering between the layers has further strengthened the foreign matter and has caught the performance simultaneously, and lattice connection structure (tetrahedron-like connection structure) has improved lattice connecting plate 3's structural stability. Meanwhile, the whole lattice connecting plate 3 is of a lattice structure with larger porosity; and meanwhile, the shock resistance and the shock resistance of the lower tube seat component are improved by means of the elasticity of the self structural characteristics.
Example 3:
The utility model provides a filter, the filter includes two-layer lattice structure at least, and each layer lattice structure's flow hole staggers each other, makes in the filter no straight line run through the through-hole of filter upper surface and lower surface, and adopts a plurality of connectors to connect between each layer lattice structure's layer, the lattice unit in connector and the lattice structure constitutes the polyhedron structure.
The filter body of the embodiment not only can be used for filtering the lower tube seat of the fuel assembly, but also can be used for filtering fluid by other structures.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are for understanding and reading only by those skilled in the art, and are not intended to limit the scope of the invention, so that any structural modifications, proportional changes, or size adjustments should fall within the scope of the invention without affecting the efficacy and achievement of the present invention. Also, the terms such as "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for which the invention may be practiced or for which the relative relationships may be altered or modified without materially altering the technical context.
Claims (8)
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 the flow holes of the lattice structures are staggered, so that no straight line penetrates through holes on the upper surface and the lower surface of the lattice connecting plate (3) in the lattice connecting plate (3);
The layers of the lattice structure are connected by a plurality of connectors, and the connectors and lattice units in the lattice structure form a polyhedral structure; the section of the connecting rod forming the lattice unit in the lattice structure is round; the whole lattice connecting plate (3) is of a lattice structure with larger porosity; each layer of lattice structure adopts lattice units with different shapes.
2. The fuel assembly bottom nozzle of claim 1, wherein the structure of the connector comprises a tapered structure.
3. The fuel assembly bottom nozzle of claim 1, wherein the shape of the lattice elements in the lattice structure comprises a triangle or square.
4. The fuel assembly bottom nozzle of claim 3, wherein the triangle comprises an equilateral triangle or an isosceles triangle.
5. The fuel assembly lower stem based on the multilayer staggered lattice structure according to claim 1, further comprising a guide stem (1) and a meter stem (2), the guide stem (1) and the meter stem (2) being arranged in a lattice connection plate (3).
6. The fuel assembly bottom nozzle based on the multilayer staggered lattice structure according to any one of claims 1 to 5, wherein the fuel assembly bottom nozzle is prepared by using 3D printing technology.
7. The filter body is characterized by at least comprising two layers of lattice structures, wherein the flow holes of each layer of lattice structure are staggered, so that no through holes penetrating through the upper surface and the lower surface of the filter body in a straight line are formed in the filter body, the layers of the lattice structures are connected by a plurality of connectors, and the connectors and lattice units in the lattice structures form a polyhedral structure; the whole lattice connecting plate (3) is of a lattice structure with larger porosity; each layer of lattice structure adopts lattice units with different shapes.
8. Use of a filter body according to claim 7 for filtering a fluid.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115206558A CN115206558A (en) | 2022-10-18 |
| CN115206558B true CN115206558B (en) | 2024-04-19 |
Family
ID=83580829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115206558B (en) |
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 |
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115206558A (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102498523B (en) | For mounting system and the assembly of fuel reservoir | |
| CN115206558B (en) | Fuel assembly lower tube seat based on multilayer staggered lattice structure, filter body and application | |
| CN110537229A (en) | Nuclear fuel assembly clast filtering bottom nozzle | |
| CN103247351A (en) | Low-pressure-drop foreign matter prevention type lower pipe seat of fuel assembly | |
| KR20220008908A (en) | Debris filtration arrangement for a nuclear fuel assembly bottom nozzle and bottom nozzle comprising same | |
| CN113362976A (en) | Efficient filtering lower pipe seat, fuel assembly and nuclear reactor | |
| CN215692391U (en) | Multi-layer net sintered filter element | |
| WO2004112945A1 (en) | Spacer for use in a membrane separation device and a membrane separation device comprising such a spacer | |
| CN203070777U (en) | Low-pressure-drop anti-foreign matter fuel component lower pipe base | |
| CN210597598U (en) | Grid structure with irregular boundary | |
| CN210562917U (en) | Grid structure with embedded latticed shell | |
| CN206434932U (en) | Wound-rotor type filter core | |
| CN115588518B (en) | Nuclear fuel assembly lower tube seat based on streamline filter rod structure | |
| CN115295177B (en) | Nuclear fuel assembly lower tube seat based on filter rod structure, filter assembly and application | |
| CN2334481Y (en) | Organic waste gas purifing equipment | |
| CN116263149A (en) | Nest-shaped filter | |
| CN217340368U (en) | Active alumina filter | |
| CN115206557B (en) | Fuel assembly lower tube seat and filter assembly based on space curved surface channel | |
| CN220417563U (en) | Filter screen assembly and kitchen air conditioner | |
| CN212308995U (en) | Multi-layer filtering filter element with supporting dirt-holding layer | |
| CN218047997U (en) | Fuse-element filter core inspection reagent collection vehicle | |
| CN204407015U (en) | A kind of fuel assembly bottom nozzle of dual anti-foreign matter | |
| CN205518611U (en) | A filter screen for hexgonal screen | |
| CN216572124U (en) | Air conditioner filtering device | |
| CN214436882U (en) | Metal sintering net filter disc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |