CN110993128A - Grillwork for pressurized water reactor fuel assembly - Google Patents
Grillwork for pressurized water reactor fuel assembly Download PDFInfo
- Publication number
- CN110993128A CN110993128A CN201911214350.7A CN201911214350A CN110993128A CN 110993128 A CN110993128 A CN 110993128A CN 201911214350 A CN201911214350 A CN 201911214350A CN 110993128 A CN110993128 A CN 110993128A
- Authority
- CN
- China
- Prior art keywords
- pressurized water
- water reactor
- reactor fuel
- fuel assembly
- outer strip
- 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.)
- Pending
Links
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
- G21C3/34—Spacer grids
- G21C3/352—Spacer grids formed of assembled intersecting strips
-
- 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)
- Catalysts (AREA)
Abstract
The invention particularly relates to a grillwork for a pressurized water reactor fuel assembly, which belongs to the field of pressurized water reactor fuel assemblies and comprises a plurality of outer strips and a plurality of inner strips, wherein the inner strips are arranged in the plurality of outer strips and are mutually staggered; the inner surface of the outer strip is provided with a plurality of bosses which are distributed in two rows at equal intervals, and the thickness of the plate on the outer strip at the joint of the bosses and the outer strip is thickened; furthermore, the thickness of the plate on the outer strip at the joint of the boss and the outer strip is thickened, and the strength and rigidity of the outer strip at the boss are improved in a basic material increasing mode, so that cracks and deformation caused by excessive load can be effectively avoided, and the reliability is higher; the method has the advantages of simple process and high processing efficiency.
Description
Technical Field
The invention relates to the field of pressurized water reactor fuel assemblies, in particular to a grid for a pressurized water reactor fuel assembly.
Background
The prior art grids are composed of inner and outer straps, the inner straps being interleaved and surrounded by the outer straps. The inner strips and the outer strips are both formed by pressing metal plates, and the inner strips and the outer strips are connected by welding; the defects are as follows:
the inner strip and the outer strip are both processed by metal plates through pressure; the pressure processing is easy to generate cracks and has the phenomenon of springback, so that the defects are many, the process is complex and the processing efficiency is low; in addition, the bulges on the inner strip and the outer strip are formed by pressure processing, so that the local plate is thinned, and the local rigidity and strength of the strips are influenced;
in view of the above problems, the present invention provides a lattice for a pressurized water reactor fuel assembly.
Disclosure of Invention
The present invention is directed to a grid for a pressurized water reactor fuel assembly to solve the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a grillwork for a pressurized water reactor fuel assembly comprises outer straps and inner straps, wherein a plurality of inner straps are arranged in the outer straps in a wrapping mode and are mutually staggered;
the manufacturing method aims to solve the problems of multiple defects, complex process and poor manufacturing efficiency of the existing grid manufacturing process; the defects of poor structural rigidity and strength of the conventional grid frame strips are overcome, and the problem that the internal strips cannot be well limited during assembly of the conventional grid frame outer strips is solved; a plurality of bosses which are distributed in two rows at equal intervals are arranged on the inner side surface of the outer strip, and the thickness of the plate on the outer strip at the joint of the bosses and the outer strip is thickened;
furthermore, the thickness of the plate on the outer strip at the joint of the boss and the outer strip is thickened, and the lug on the surface of the outer strip is adopted, so that the strength and rigidity of the outer strip at the boss are increased, cracks and deformation caused by excessive load can be effectively avoided, and the reliability is higher; the method has the advantages of simple process and high processing efficiency.
In order to further provide the using effect of the grid for the pressurized water reactor fuel assembly: the boss is provided at the edge of the inner side surface of the outer strip.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: and a plurality of guide fins which are distributed at equal intervals are respectively arranged at the edges of two sides of the outer strip.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: the guide vanes are arranged to be inclined inwardly.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: the inner side surface of the guide fin is provided with a reinforcing structure, the reinforcing structure is limited by a limiting groove formed in the outer strip, and the reinforcing structure and the guide fin are vertically distributed.
Furthermore, the reinforcing structure increases the rigidity of the guide vane in the vertical direction, and reduces the risk that adjacent components are hung during loading and unloading; in addition, the inner straps can be limited and guided during grid assembly, and the assembly precision and reliability are improved.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: the reinforcing structure is a reinforcing rib.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: the reinforcing ribs are fan-shaped.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: the reinforcing structure is a reinforcing plate, and an open slot is formed in the reinforcing plate.
In order to further provide the use effect of the grid for the pressurized water reactor fuel assembly: the inner strip is provided with a plurality of clamping grooves distributed in an array manner, and the surface of the inner strip is provided with a plurality of lugs distributed in two rows at equal intervals.
Compared with the prior art, the invention has the beneficial effects that:
1. the thickness of the plate on the outer strip at the joint of the boss and the outer strip is thickened, and the basic material increase mode of the plate increases the strength and rigidity of the outer strip at the boss, so that cracks and deformation caused by excessive load can be effectively avoided, and the reliability is higher; the method has the advantages of simple process and high processing efficiency;
2. the reinforcing structure increases the rigidity of the guide vane in the vertical direction, and reduces the risk that adjacent assemblies are hung during loading and unloading; in addition, the inner straps can be limited and guided during grid assembly, and the assembly precision and reliability are improved.
Drawings
Fig. 1 is a schematic structural view of a lattice for a pressurized water reactor fuel assembly according to the present invention.
Fig. 2 is a schematic view showing the structure of the assembly of the outer straps and the inner straps in the lattice for a pressurized water reactor fuel assembly according to the present invention.
Fig. 3 is a partial structure diagram of the outer stripe in fig. 2.
Fig. 4 is a schematic structural view of fig. 3 with reinforcing ribs added.
Fig. 5 is a schematic structural view of fig. 3 with a reinforcing plate added.
Fig. 6 is a partial structural view of the inner band in fig. 2.
In the figure:
1-outer strip; 2-inner strip;
11-a boss; 12-reinforcing ribs; 13-guide vanes; 14-a reinforcing plate; 15-open slots;
21-a bump; 22-card slot.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
The prior art grids are composed of inner and outer straps, the inner straps being interleaved and surrounded by the outer straps. The inner strips and the outer strips are both formed by pressing metal plates, and the inner strips and the outer strips are connected by welding; the defects are as follows:
the inner strip and the outer strip are both processed by metal plates through pressure; the pressure processing is easy to generate cracks and has the phenomenon of springback, so that the defects are many, the process is complex and the processing efficiency is low; in addition, the protrusions on the inner and outer strips, due to the press forming, cause local thinning of the sheet material, affecting the local stiffness and strength of the strips.
In view of the above problems, the present invention provides a lattice for a pressurized water reactor fuel assembly.
As shown in fig. 1 and 2, the lattice for the pressurized water reactor fuel assembly includes a plurality of outer straps 1 and a plurality of inner straps 2, wherein the inner straps 2 are disposed inside the outer straps 1 and are staggered with each other;
the manufacturing method aims to solve the problems of multiple defects, complex process and poor manufacturing efficiency of the existing grid manufacturing process; the defects of poor structural rigidity and strength of the conventional grid frame strips are overcome, and the problem that the internal strips cannot be well limited during assembly of the conventional grid frame outer strips is solved; as shown in fig. 2-6, a plurality of bosses 11 are arranged on the inner side surface of the outer strip 1 in two rows and are distributed at equal intervals, and the thickness of the plate on the outer strip 1 at the joint of the bosses 11 and the outer strip 1 is thickened;
furthermore, the thickness of the plate on the outer strip 1 at the joint of the boss 11 and the outer strip 1 is thickened, and the basic material adding mode of the thickened plate increases the strength and rigidity of the outer strip 1 at the boss 11, so that cracks and deformation caused by excessive load can be effectively avoided, and the reliability is higher; the method has the advantages of simple process and high processing efficiency.
For further explanation, the following are specific:
said boss 11 is provided at the edge of the inner side surface of the outer strip 1.
A plurality of guide vanes 13 which are distributed at equal intervals are respectively arranged at the two side edges of the outer strip 1.
Preferably, the guide vanes 13 are arranged to be inwardly inclined.
Example 2
The present embodiment is further defined on the basis of embodiment 1.
In the prior art grids, the guide fins of the outer straps are bent inwards in the grid to reduce the risk of adjacent modules getting caught during handling, but the inwardly bent guide fins have a reduced stiffness in the vertical direction and are prone to deform in the vertical direction during handling of the modules.
As shown in fig. 4 and 5, in order to increase the rigidity of the guide vane 13 in the vertical direction and reduce the risk of the adjacent components being caught during loading and unloading, a reinforcing structure is arranged on the inner side surface of the guide vane 13, the reinforcing structure is limited by a limiting groove formed on the outer strip 1, and the reinforcing structure and the guide vane 13 are vertically distributed.
Furthermore, the reinforcing structure increases the rigidity of the guide vane 13 in the vertical direction, and reduces the risk that adjacent components are hung during loading and unloading; in addition, the inner straps 2 can be limited and guided during the assembly of the framework, so that the assembly precision and reliability are improved.
The reinforcing structure is a reinforcing rib 12.
Preferably, the reinforcing rib 12 is fan-shaped.
Example 3
The inventive example differs from example 2 only in that:
the reinforcing structure is a reinforcing plate 14, and an open slot 15 is formed in the reinforcing plate 14.
Example 4
The examples of the present invention are further defined on the basis of examples 1 to 3.
The inner strip 2 is provided with a plurality of clamping grooves 22 distributed in an array manner, and the surface of the inner strip 2 is provided with a plurality of lugs 21 distributed in two rows at equal intervals.
The working principle of the invention is as follows: according to the grillwork for the pressurized water reactor fuel assembly, the plate thickness on the outer strip 1 at the joint of the boss 11 and the outer strip 1 is thickened, and the strength and rigidity of the outer strip 1 at the boss 11 are increased by adopting the material increase basic mode, so that cracks and deformation caused by overlarge load can be effectively avoided, and the reliability is higher; the method has the advantages of simple process and high processing efficiency; the reinforcing structure increases the rigidity of the guide vane 13 in the vertical direction, and reduces the risk that adjacent components are hung during loading and unloading; in addition, the inner straps 2 can be limited and guided during the assembly of the framework, so that the assembly precision and reliability are improved.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. The utility model provides a framework that pressurized water reactor fuel assembly used, includes outer strip (1) and interior strip (2), interior strip (2) are in a plurality of the inside of outer strip (1) parcel is provided with a plurality ofly, and is crisscross mutually, its characterized in that be equipped with a plurality of bosss (11) that are two rows of equidistant distributions on outer strip (1) inboard surface, and plate thickness sets up the thickening on outer strip (1) of boss (11) and outer strip (1) junction.
2. A lattice for a pressurized water reactor fuel assembly according to claim 1, characterized in that the bosses (11) are provided at the edge of the inner side surface of the outer strip (1).
3. A grid for a pressurized water reactor fuel assembly according to claim 1, characterized in that a plurality of guide vanes (13) are provided at both side edges of the outer strip (1) at equal intervals, respectively.
4. Grid for a pressurized water reactor fuel assembly according to claim 1, characterized in that the guide vanes (13) are provided with a reinforcement on their inside surface, which is retained by retaining grooves provided in the outer strip (1), and which is arranged perpendicular to the guide vanes (13).
5. Grid for a pressurized water reactor fuel assembly according to claim 3 or 4, characterized in that the guide vanes (13) are arranged inclined inwards.
6. Grid for a pressurized water reactor fuel assembly according to claim 4, characterized in that the reinforcing structure is a reinforcement bar (12).
7. Grid for a pressurized water reactor fuel assembly according to claim 6, characterized in that the reinforcement ribs (12) are fan-shaped.
8. A grid for a pressurized water reactor fuel assembly according to claim 4, characterized in that the reinforcing structure is a reinforcing plate (14), and the reinforcing plate (14) is provided with open slots (15).
9. A grid for a pressurized water reactor fuel assembly according to any one of claims 1 to 8, characterized in that the inner strip (2) is provided with a plurality of slots (22) distributed in an array and the surface of the inner strip (2) is provided with a plurality of projections (21) distributed in two rows at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911214350.7A CN110993128A (en) | 2019-12-02 | 2019-12-02 | Grillwork for pressurized water reactor fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911214350.7A CN110993128A (en) | 2019-12-02 | 2019-12-02 | Grillwork for pressurized water reactor fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110993128A true CN110993128A (en) | 2020-04-10 |
Family
ID=70089095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911214350.7A Pending CN110993128A (en) | 2019-12-02 | 2019-12-02 | Grillwork for pressurized water reactor fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110993128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524616A (en) * | 2020-05-14 | 2020-08-11 | 吉林农业大学 | Integral positioning grid frame based on additive manufacturing process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659542A (en) * | 1984-10-03 | 1987-04-21 | Westinghouse Electric Corp. | Grid structure for nuclear fuel assembly |
| JP2007014978A (en) * | 2005-07-06 | 2007-01-25 | Nissan Motor Co Ltd | Method and device for manufacturing formed component |
| JP2010185778A (en) * | 2009-02-12 | 2010-08-26 | Nuclear Fuel Ind Ltd | Spacer for boiling water reactor fuel assembly, fuel assembly including the same, and method of designing the spacer |
| CN103177777A (en) * | 2013-01-15 | 2013-06-26 | 上海核工程研究设计院 | Fuel assembly grid capable of enhancing rigidity and reducing hooking risk |
| CN106104700A (en) * | 2014-04-03 | 2016-11-09 | 西屋电气有限责任公司 | Low pressure drop nuclear fuel assembly bottom nozzle |
| CN107020335A (en) * | 2016-01-29 | 2017-08-08 | 株式会社神户制钢所 | The manufacture method of stamping part, stamping part and press molding equipment |
| CN107980163A (en) * | 2017-09-20 | 2018-05-01 | 岭澳核电有限公司 | Grid spacer and fuel assembly |
| CN110164567A (en) * | 2018-03-30 | 2019-08-23 | 吉林农业大学 | A kind of PWR fuel assembly screen work and the fuel assembly with this screen work |
-
2019
- 2019-12-02 CN CN201911214350.7A patent/CN110993128A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659542A (en) * | 1984-10-03 | 1987-04-21 | Westinghouse Electric Corp. | Grid structure for nuclear fuel assembly |
| JP2007014978A (en) * | 2005-07-06 | 2007-01-25 | Nissan Motor Co Ltd | Method and device for manufacturing formed component |
| JP2010185778A (en) * | 2009-02-12 | 2010-08-26 | Nuclear Fuel Ind Ltd | Spacer for boiling water reactor fuel assembly, fuel assembly including the same, and method of designing the spacer |
| CN103177777A (en) * | 2013-01-15 | 2013-06-26 | 上海核工程研究设计院 | Fuel assembly grid capable of enhancing rigidity and reducing hooking risk |
| CN106104700A (en) * | 2014-04-03 | 2016-11-09 | 西屋电气有限责任公司 | Low pressure drop nuclear fuel assembly bottom nozzle |
| CN107020335A (en) * | 2016-01-29 | 2017-08-08 | 株式会社神户制钢所 | The manufacture method of stamping part, stamping part and press molding equipment |
| CN107980163A (en) * | 2017-09-20 | 2018-05-01 | 岭澳核电有限公司 | Grid spacer and fuel assembly |
| CN110164567A (en) * | 2018-03-30 | 2019-08-23 | 吉林农业大学 | A kind of PWR fuel assembly screen work and the fuel assembly with this screen work |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524616A (en) * | 2020-05-14 | 2020-08-11 | 吉林农业大学 | Integral positioning grid frame based on additive manufacturing process |
| CN111524616B (en) * | 2020-05-14 | 2023-09-01 | 吉林农业大学 | Integral spacer grid based on additive manufacturing process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110993128A (en) | Grillwork for pressurized water reactor fuel assembly | |
| DE102017101318A1 (en) | Wrapped metal seal construction with improved contact stress uniformity under fault orientation conditions | |
| CN216649608U (en) | Component frame section bar and component frame thereof | |
| CN112803885A (en) | Solar photovoltaic panel fixing system | |
| CN210156392U (en) | High-efficient photovoltaic module | |
| CN218941022U (en) | Composite material photovoltaic module frame and pressing plate | |
| CN210110814U (en) | Solar cell electrode grid line structure | |
| CN111540481A (en) | Stirring grid work based on additive manufacturing process | |
| CN110164567B (en) | Pressurized water reactor fuel assembly grillwork | |
| CN216145648U (en) | Continuous grid of horizontal bipolar battery | |
| CN211966093U (en) | Rolling shearing device for continuous grid or polar plate | |
| CN210426243U (en) | Water collector | |
| CN211812928U (en) | Compound sedan-chair end, elevator car and elevator | |
| CN205960066U (en) | Battery box side wall, pin -connected panel assembled battery case and can extend battery box group | |
| CN212659572U (en) | Sealing structure for improving packaging stability of fuel cell metal bipolar plate layer at crossing position | |
| CN218939703U (en) | Welding strip piece and battery assembly | |
| CN220821781U (en) | Battery module and battery pack | |
| CN214212662U (en) | Heater structure | |
| CN219385344U (en) | Zero polar distance water electrolysis hydrogen production equipment | |
| CN219180522U (en) | Copper grid line electrode and solar cell | |
| CN217737974U (en) | High-strength plate-fin heat dissipation core | |
| CN213032515U (en) | Turbulent flow type carrier structure | |
| CN218416285U (en) | Photovoltaic module and frame thereof | |
| CN216904791U (en) | Frame component for solar photovoltaic panel | |
| CN216036373U (en) | Photovoltaic module stacks fixed frock |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |