CN107195335A - Fuel assembly and its assembly method - Google Patents
Fuel assembly and its assembly method Download PDFInfo
- Publication number
- CN107195335A CN107195335A CN201710365126.2A CN201710365126A CN107195335A CN 107195335 A CN107195335 A CN 107195335A CN 201710365126 A CN201710365126 A CN 201710365126A CN 107195335 A CN107195335 A CN 107195335A
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- CN
- China
- Prior art keywords
- wing
- fuel rod
- fuel
- mix
- band
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/04—Means for controlling flow of coolant over objects being handled; Means for controlling flow of coolant through channel being serviced, e.g. for preventing "blow-out"
-
- 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
- G21C3/322—Means to influence the coolant flow through or around the bundles
-
- 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)
- Fuel-Injection Apparatus (AREA)
- Fuel Cell (AREA)
Abstract
The present invention relates to fuel assembly and its assembly method, the assembly method includes：Punching band simultaneously takes in bar and preforming mixes the wing；Band is assembled to form the screen work with some grid cells；The wing is mixed in post forming on screen work；And load fuel rod in grid cell along longitudinal direction.The wing is mixed using the method for punching of routine is only preforming while punching band, high-precision preparation method is used to mix the wing to preforming wing progress post forming of mixing to shape, improved because post forming prepares precision, reduce the influence that dimensional tolerance and build-up tolerance are brought, the area of the wing is mixed so as to corresponding increase on the basis of being protected in security performance, the gap length mixed between the wing and fuel rod is reduced.Resulting lateral flow enhancing, is improved to the effect that coolant fluid is produced；Meanwhile, the wing is mixed relatively closer to fuel rod, so as to effectively destroy the fluid layer of fuel rod surface near fuel rod, mixes effect enhancing.
Description
Technical field
The present invention relates to nuclear reactor, more particularly to a kind of fuel assembly and its assembly method for nuclear reactor.
Background technology
Referring to Fig. 1, the fuel assembly 1 in nuclear reactor includes upper base 11, guide pipe 12, screen work 13, fuel rod
14 and bottom nozzle 15.Screen work 13 is located between upper base 11 and bottom nozzle 15 along longitudinal direction, and the screen work 13 includes multiple bands,
Band, which intersects each other, cooperatively forms multiple grid cells.Guide pipe 12 is located between upper base 11 and bottom nozzle 15 along longitudinal direction, and one
End is fixedly linked with upper base 11, and the other end is fixedly linked with bottom nozzle 15, can be parallel to each other between guide pipe 12, and located at grid
In lattice unit, thus screen work 13 can be directed to pipe 12 and be spaced apart from each other, and control the spacing between guide pipe 12, form fuel stack
The support frame of part 1.Fuel rod 14 is located between upper base 11 and bottom nozzle 15 along longitudinal direction, and in screen work 13, it is general each
Fuel rod 14 is parallel to each other, located at not being directed in the grid cell that pipe 12 is occupied.
In nuclear reactor, fuel rod 14 of the coolant flow through fuel assembly 1 of cooling recirculation system, such as along A directions（I.e.
Longitudinal direction）Flow through, by moderation of neutrons and take away disintegration energy.For above-mentioned cooling circulation, generally also take setting in bar and mix the wing,
Mix the wing to stretch into grill unit, when coolant fluid flows through between each fuel rod 14, by by the stop for mixing the wing 16
And lateral flow is formed, and coolant fluid is mixed, then from laminar flow regime to Turbulent Flow transition, the stable state of coolant fluid
After destroyed, the heat of fuel rod 14 is easier to export, so as to effectively improve thermal technology's surplus of fuel assembly 1.
At present, in the assembling process of fuel assembly 1, mix the wing and be typically integrally formed with band and be made, and with band
Screen work 13 is assembled into the lump, then loads fuel rod 14 in the grid cell of screen work 13.To ensure that the safety of fuel rod 14 loads
In grid cell, it need to prevent in assembling process that fuel rod 14 is touched and mix the wing, and the shape fabricating requirement for mixing the wing is strict, no
Can arbitrarily it change, but mix the wing needs consideration process tolerance and build-up tolerance to bring with band during being integrally formed
Influence so that the excessive area of grid cell can not be occupied by mixing the wing, need to generally be left in fuel rod 14 and mixing between the wing
Enough gaps.
The gap is a key factor of thermal technology's surplus in influence cooling cyclic process, if gap is excessive, mixes wing production
Raw lateral flow is weaker, and the effect produced to coolant fluid is too small；Meanwhile, during mixing, closer to fuel rod 14
Alar part of mixing get over and can destroy the fluid layer on the surface of fuel rod 14, then the influence to fuel rod 14 is bigger, therefore excessive
Gap can not effectively destroy the fluid layer on the surface of fuel rod 14, mix decreased effectiveness.To sum up, how the same of thermal technology's surplus is being ensured
When, it is to avoid fuel rod 14 is interfered with mixing the wing, is the problem of having to be solved at present.
The content of the invention
The technical problem to be solved in the present invention is, for how while thermal technology's surplus is ensured, avoid fuel rod with
Mix the wing and interfere that there is provided a kind of fuel assembly and its assembly method.
The technical solution adopted for the present invention to solve the technical problems is：There is provided a kind of assembly method of fuel assembly,
Including：Punching band simultaneously takes in bar and preforming mixes the wing；Band is assembled to form the screen work with some grid cells；In lattice
The wing is mixed in post forming on frame；And load fuel rod in grid cell along longitudinal direction.
In the assembly method of fuel assembly according to embodiments of the present invention, punching band simultaneously takes preforming mix in bar
In the wing, the wing is mixed in integral punching while punching band.
In the assembly method of fuel assembly according to embodiments of the present invention, cut and preforming mix the wing with post forming
Mix the wing.
In the assembly method of fuel assembly according to embodiments of the present invention, cutting includes laser cutting.
It is multiple using laser cutting post forming simultaneously in the assembly method of fuel assembly according to embodiments of the present invention
Mix the wing.
It is multiple using laser cutting post forming simultaneously in the assembly method of fuel assembly according to embodiments of the present invention
Grid cell mixes the wing；And fuel rod sequentially passes through the plurality of grid cell along longitudinal direction.
In the assembly method of fuel assembly according to embodiments of the present invention, the circle of fuel rod to be set in grid cell is determined
The heart, and cut using the center of circle as axle center, by axle of the length more than fuel rod radius that the bar of the grid cell takes it is preforming
Mix the wing.
In the assembly method of fuel assembly according to embodiments of the present invention, mixing the outline of the wing includes first paragraph and the
Two sections, first paragraph is adjacent to fuel rod in a grid cell；Sizing second segment and pre-setting first in the wing are mixed preforming
Section, first paragraph of being shaped in the wing is mixed in post forming.
Present invention also offers a kind of fuel assembly, including screen work and along the longitudinally mounted fuel rod in screen work；Lattice
Frame includes multiple bands, and band, which intersects each other, cooperatively forms multiple grid cells, and fuel rod correspondence is located in grid cell, band
On be additionally provided with and mix the wing, band and mixing the wing and be integrated punch forming structure, and mix the wing also includes post forming part.
In fuel assembly according to embodiments of the present invention, mix between the wing and the neighbouring outline of fuel rod and fuel rod
Gap be not more than 2mm.
In fuel assembly according to embodiments of the present invention, mixing the outline of the wing includes first paragraph and second segment, one
First paragraph is adjacent to fuel rod in individual grid cell；First paragraph is segmental arc, and with the neighbouring concyclic heart of fuel rod.
Implement the invention has the advantages that：, can be using conventional method for punching in punching band in assembly method
While it is only preforming mix the wing, can then use high-precision preparation method to it is preforming mix the wing carry out post forming with
The wing is mixed in sizing, during the wing is mixed in post forming, is improved because preparing precision, is reduced dimensional tolerance and build-up tolerance band
The influence come, the area of the wing is mixed so as to corresponding increase on the basis of being protected in security performance, and the wing and combustion are mixed in reduction
Gap length between charge bar.Mix after area increase of the wing in grid cell, the lateral flow enhancing of generation, so as to cold
But the effect that agent fluid is produced is improved；Meanwhile, gap, which is reduced, to mix the wing relatively closer to fuel rod, so as in fuel rod
The fluid layer of fuel rod surface is nearby effectively destroyed, effect enhancing is mixed.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of fuel assembly in the prior art；
Fig. 2 is the flow chart of the assembly method of the fuel assembly according to first embodiment of the invention；
Fig. 3 is the structural representation for mixing the wing of the pre-setting according to the embodiment of the present invention；
Fig. 4 is the structural representation for mixing the wing of another pre-setting according to the embodiment of the present invention；
Fig. 5 is partial cross section's structural representation of the fuel assembly according to one embodiment of the invention；
Fig. 6 is the structural representation for mixing the wing according to the embodiment of the invention.
Embodiment
Referring to Fig. 2, the assembly method according to the fuel assembly of first embodiment of the invention includes：Step S100, punching bar
Band simultaneously takes in bar and preforming mixes the wing；Step S200, assembling band are to form the screen work with some grid cells；Step
S300, on screen work post forming mix the wing；And step S400, along longitudinal direction load fuel rod in grid cell.
In above-mentioned assembly method, it can use conventional method for punching is only preforming while punching band to mix the wing,
High-precision preparation method can be then used to mix the wing to preforming wing progress post forming of mixing to shape, in post forming
During mixing the wing, improved because preparing precision, the influence that dimensional tolerance and build-up tolerance are brought is reduced, so as in safety
Performance is corresponding on the basis of being protected to increase the area for mixing the wing, reduces the gap length mixed between the wing and fuel rod.Stir
After area increase of the mixed wing in grid cell, the lateral flow enhancing of generation, so that the effect produced to coolant fluid is carried
It is high；Meanwhile, gap, which is reduced, to mix the wing relatively closer to fuel rod, so as to effectively destroy fuel rod table near fuel rod
The fluid layer in face, mixes effect enhancing.
Though step S200 and S400 is not described in detail herein, one of ordinary skill in the art can reasonable employment it is existing
Repeated no more in method implementation steps S200 and S400 arbitrarily suitable in technology, text.It should know, it is any to be based on this hair
The technical scheme that bright teaching is formed, within protection scope of the present invention.
In assembly method according to the fuel assembly of second embodiment of the invention, for step S100, punching band it is same
Shi Yiti punching forms and mixes the wing, preforming to mix the wing and band is structure as a whole, so that remaining to holding mixes the wing and band
Stabilization be connected, it is to avoid mix the wing and taken from bar and come off.
, can be to pre- in S100 for step S300 in assembly method according to the fuel assembly of third embodiment of the invention
The wing of mixing of shaping is cut, and the wing is mixed with post forming, so that the final shaping mixes the wing.The cutting mode includes laser
A variety of contactless cuttings such as cutting, wire cutting or soft contact mode, the final of the wing is mixed by setting cutting path realization
Shaping.Post forming is carried out using the cutting mode for being easy to focus on, can improve and mix wing sizing precision；In addition, cutting path is easy to
Regulation, can be achieved simultaneously cut it is multiple mix the wing, so as to improve production efficiency.At the same time, the heat affected area in cutting process
Little is influenceed on the final molding for mixing the wing, in tolerance interval.
For example, can using laser cutting post forming mix the wing, further, can also using laser cutting simultaneously it is secondary into
Type is multiple to mix the wing.Generally, the wing can be mixed by the multiple grid cells of post forming using laser cutting simultaneously, fuel rod is along longitudinal direction
Sequentially pass through the plurality of grid cell, you can be located at along longitudinal direction cutting simultaneously on same longitudinal direction and multiple mix the wing.
In an embodiment of above-mentioned 3rd embodiment, in step S300, it is first determined treated in grid cell
If the home position of fuel rod, and using this center of circle as axle center, the grid cell is cut by axle of the length more than fuel rod radius
Bar take preforming mix the wing.Referring specifically to Fig. 3, the wing 160a that mixes that bar takes pre-setting includes Part I 161a
With Part II 162a, Part II 162a is relatively closer to the fuel rod that will subsequently load.It is to be installed to have in step S300
The home position of the fuel rod entered is axle center, using the length more than fuel rod radius as axle, is cut by the way of picture is justified predetermined
Type mixes wing 160a, removes Part II 162a, so that obtain the final shaping mixes the wing.The radius of drawn circle, which is more than, to be waited to set
The radius of fuel rod, the length difference of such as two radiuses is not more than 2mm, and line of cut 163a is a drawn round fan-shaped section,
Segmental arc is can be described as, the gap between line of cut 163a and fuel rod outer surface after loading is above-mentioned to mix the wing and fuel rod
Between gap, the gap is not more than 2mm.The thus obtained outline for mixing the wing includes first paragraph and second segment, first paragraph
To cut the contour segment obtained along line of cut 163a, second segment is other contour segments in addition to first paragraph, and first paragraph is being mixed
Closer to fuel rod in grid cell where the wing, and first paragraph is arc or sector, and with it is adjoining in the grid cell
The concyclic heart of fuel rod, using the concentric structure, can be obviously improved the efficiency for mixing the wing.
The structure for mixing wing 160a of pre-setting shown in Fig. 3 is used only as citing, is not limitation of the present invention, ability
The those of ordinary skill in domain can be based on the teachings of the present invention, select what is be arbitrarily adapted to for convenience of fuel rod is loaded into grid cell
The structure for mixing the wing of pre-setting, will not enumerate herein.For example, with reference to Fig. 4, it illustrates mixing for another pre-setting
Wing 160b structure, the wing 160b that mixes of the pre-setting includes Part I 161b and Part II 162b, Part II 162b
Relatively closer to fuel rod, the separator bar 163b between Part I 161b and Part II 162b is the cutting in step S300
Line.
According to fourth embodiment of the invention fuel assembly assembly method in, mix the wing outline include first paragraph and
Second segment, in a grid cell, first paragraph is relative closer between fuel rod, and first paragraph and fuel rod outer surface
Gap is the above-mentioned gap mixed between the wing and fuel rod.For step S100, during pre-setting mixes the wing, the wing is mixed in sizing
Second segment, and pre-setting first paragraph；For step S300, during the wing is mixed in post forming, the first paragraph of shaping,
The final shaping entirely mixes the wing.
Present invention also offers a kind of fuel assembly, using the assembly method assembling according to any embodiment of the present invention
Into.Referring to Fig. 5, the fuel assembly according to one embodiment of the invention includes screen work and along the longitudinally mounted fuel rod in screen work
14；Wherein, screen work includes multiple bands 131, and band 131, which intersects each other, cooperatively forms multiple grid cells 130,14 pairs of fuel rod
It should be located in grid cell 130, be additionally provided with band 131 and mix the wing 16, band is integrated punch forming structure with mixing the wing, and
Mixing the wing also includes post forming part.The preparation precision of the post forming part is improved, and reduces dimensional tolerance and assembling is public
The influence that difference band comes, the area of the wing is mixed so as to corresponding increase on the basis of being protected in security performance, is mixed with reducing
Gap between the wing and fuel rod.
Referring to Fig. 6, in an embodiment, mixing the wing 26 includes Part I 261 and Part II 262, second
Part 262 is closer to fuel rod in grid cell, and the boundary line 263 between Part I 261 and Part II 262 is not actual
In the presence of only statement is conveniently defined, and Part I 261 is integral with Part II 262.Close to combustion in Part II 262
The outline 26a of charge bar is post forming part, and other outlines 26b is to be integrally formed part with band.
Referring also to Fig. 5, in fuel assembly, between mixing between the wing 16 and the neighbouring outline of fuel rod 14 and fuel rod 14
Gap 17 is not more than 2mm.This gap 17 is smaller than existing normal gap.It may be sized such that mixing the wing 16 exists by reducing gap 17
After area increase in grid cell 130, the lateral flow enhancing of generation, so as to be improved to the effect that coolant fluid is produced；
Meanwhile, gap 17, which is reduced, to mix the wing 16 relatively closer to fuel rod 14, so as to the effectively destruction combustion near fuel rod 14
The fluid layer on the surface of charge bar 14, mixes effect enhancing.
Referring also to Fig. 5, in the fuel assembly of the example embodiment of the present invention, mixing the outline of the wing 16 includes the
One section 161 and second segment 162, first paragraph 161 are segmental arc；First paragraph 161 is adjacent to fuel rod in a grid cell 130
14, and with the neighbouring concyclic heart of fuel rod 14, the concyclic core structure can improve the operating efficiency for mixing the wing 16.Based on above-mentioned circle
The heart, the radius of fuel rod 14 is less than the radius of segmental arc（It can be specifically the fit radius of segmental arc）, and difference is not more than
2mm。
Referring also to Fig. 5, in the fuel assembly of another example embodiment of the present invention, it is additionally provided with band 131 just convex
Component 18, firm male member 18 is stretched into grid cell 130 and against the outer surface of fuel rod 14.Specifically, firm male member 18 is wrapped
Connected support sector 181 and butting section 182 are included, support sector 181 is the rigid element being connected with band 131, and butting section 182 is to stretch
Enter in grid cell 130 and against the elastomeric element of fuel rod 14.In four bands 131 for surrounding same grid cell 130
Firm male member 18 is respectively equipped with least two, because firm male member 18 is used for against fuel rod 14, same grid cell 130 it is many
Individual firm male member 18 coordinates, with the approximate circle fitting contour line by radius of the radius of fuel rod 14（Not shown in figure）,
The outer surface profile line of approximate circle the fitting contour line and fuel rod 14 is essentially coincided.
Correspondingly,, can be using the radius of fuel rod as radius if the bar of screen work is taken provided with firm male member in step S300
Circular fit contour line is done to multiple firm male members in same grid cell, the center of circle of the circular fit contour line is that can determine that
For the center of circle with the fuel rod loaded.
It should be understood that above example only expresses the preferred embodiment of the present invention, it describes more specific and detailed
Carefully, but can not therefore and be interpreted as the limitation to the scope of the claims of the present invention；It should be pointed out that for the common skill of this area
For art personnel, without departing from the inventive concept of the premise, independent assortment can be carried out to above-mentioned technical characterstic, can also done
Go out several modifications and improvements, these belong to protection scope of the present invention；Therefore, it is all to be done with scope of the invention as claimed
Equivalents and modification, all should belong to the covering scope of the claims in the present invention.
Claims (11)
1. a kind of assembly method of fuel assembly, it is characterised in that including：Punching band simultaneously takes preforming mix in the bar
The wing；The band is assembled to form the screen work with some grid cells；On the screen work wing is mixed described in post forming；With
And load fuel rod in the grid cell along longitudinal direction.
2. the assembly method of fuel assembly according to claim 1, it is characterised in that the punching band and in the bar
Take it is preforming mix in the wing, mix the wing described in integral punching while band described in punching.
3. the assembly method of fuel assembly according to claim 1, it is characterised in that preforming described of cutting mixes the wing
To mix the wing described in post forming.
4. the assembly method of the fuel assembly of screen work according to claim 3, it is characterised in that the cutting includes laser
Cutting.
5. the assembly method of fuel assembly according to claim 4, it is characterised in that using laser cutting it is simultaneously secondary into
The wing is mixed described in type is multiple.
6. the assembly method of fuel assembly according to claim 4, it is characterised in that using laser cutting it is simultaneously secondary into
Type multiple grid cells mix the wing；And the fuel rod sequentially passes through the plurality of grid cell along longitudinal direction.
7. the assembly method of fuel assembly according to claim 4, it is characterised in that determine to wait to set in the grid cell
The center of circle of the fuel rod, and cut the grid using the center of circle as axle center, using the length more than the fuel rod radius as axle
What the bar of unit took preforming described mixes the wing.
8. the assembly method of the fuel assembly according to claim any one of 1-7, it is characterised in that described to mix the outer of the wing
Profile includes first paragraph and second segment, and the first paragraph is adjacent to the fuel rod in a grid cell；Described pre-
Shaped in the wing second segment and first paragraph described in pre-setting are mixed in shaping, shape described the in the wing is mixed in the post forming
One section.
9. a kind of fuel assembly, including screen work and along the longitudinally mounted fuel rod in the screen work；The screen work includes many
Individual band, the band, which intersects each other, cooperatively forms multiple grid cells, and the fuel rod correspondence is located in the grid cell,
Characterized in that, the bar, which takes to be additionally provided with, mixes the wing, the band is integrated punch forming structure, and institute with the wing of mixing
State and mix the wing also including post forming part.
10. fuel assembly according to claim 9, it is characterised in that described to mix neighbouring outer of the wing and the fuel rod
Gap between profile and the fuel rod is not more than 2mm.
11. fuel assembly according to claim 9, it is characterised in that the outline for mixing the wing include first paragraph and
Second segment, the first paragraph is adjacent to the fuel rod in a grid cell；The first paragraph be segmental arc, and with neighbour
The near concyclic heart of the fuel rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365126.2A CN107195335B (en) | 2017-05-22 | 2017-05-22 | Fuel assembly and method of assembling the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365126.2A CN107195335B (en) | 2017-05-22 | 2017-05-22 | Fuel assembly and method of assembling the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107195335A true CN107195335A (en) | 2017-09-22 |
| CN107195335B CN107195335B (en) | 2023-06-13 |
Family
ID=59875918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710365126.2A Active CN107195335B (en) | 2017-05-22 | 2017-05-22 | Fuel assembly and method of assembling the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107195335B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018214006A1 (en) * | 2017-05-22 | 2018-11-29 | 岭东核电有限公司 | Fuel assembly and method for assembling same |
| CN112071443A (en) * | 2020-08-26 | 2020-12-11 | 西安交通大学 | Nuclear fuel assembly spacer grid based on 3D prints |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058482A (en) * | 1990-07-24 | 1992-02-05 | 法美原子工程建筑公司 | Be used for the grid that nuclear fuel assembly has mixing fins |
| CN1058483A (en) * | 1990-07-24 | 1992-02-05 | 法美原子工程建筑公司 | Fuel assembly for nuclear reactor and used additional grid thereof |
| JP2001518180A (en) * | 1997-04-16 | 2001-10-09 | ブリティッシュ・ニュークリア・フューエルズ・パブリック・リミテッド・カンパニー | Refrigerant stirring grid for nuclear fuel assembly |
| US6421407B1 (en) * | 1999-06-11 | 2002-07-16 | Korea Atomic Energy Research Institute | Nuclear fuel spacer grid with dipper vanes |
| CN102568632A (en) * | 2012-03-02 | 2012-07-11 | 中科华核电技术研究院有限公司 | Screenwork for nuclear fuel component and mixing stick for screenwork |
| CN103050153A (en) * | 2012-12-20 | 2013-04-17 | 中国核动力研究设计院 | Location grid having hanging prevention and mixing functions for nuclear fuel assemblies |
| US20150287481A1 (en) * | 2012-12-04 | 2015-10-08 | Areva Np | Fuel rod support insert for a nuclear fuel assembly spacer grid, spacer grid and nuclear fuel assembly |
-
2017
- 2017-05-22 CN CN201710365126.2A patent/CN107195335B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058482A (en) * | 1990-07-24 | 1992-02-05 | 法美原子工程建筑公司 | Be used for the grid that nuclear fuel assembly has mixing fins |
| CN1058483A (en) * | 1990-07-24 | 1992-02-05 | 法美原子工程建筑公司 | Fuel assembly for nuclear reactor and used additional grid thereof |
| JP2001518180A (en) * | 1997-04-16 | 2001-10-09 | ブリティッシュ・ニュークリア・フューエルズ・パブリック・リミテッド・カンパニー | Refrigerant stirring grid for nuclear fuel assembly |
| US6421407B1 (en) * | 1999-06-11 | 2002-07-16 | Korea Atomic Energy Research Institute | Nuclear fuel spacer grid with dipper vanes |
| CN102568632A (en) * | 2012-03-02 | 2012-07-11 | 中科华核电技术研究院有限公司 | Screenwork for nuclear fuel component and mixing stick for screenwork |
| US20150287481A1 (en) * | 2012-12-04 | 2015-10-08 | Areva Np | Fuel rod support insert for a nuclear fuel assembly spacer grid, spacer grid and nuclear fuel assembly |
| CN103050153A (en) * | 2012-12-20 | 2013-04-17 | 中国核动力研究设计院 | Location grid having hanging prevention and mixing functions for nuclear fuel assemblies |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018214006A1 (en) * | 2017-05-22 | 2018-11-29 | 岭东核电有限公司 | Fuel assembly and method for assembling same |
| CN112071443A (en) * | 2020-08-26 | 2020-12-11 | 西安交通大学 | Nuclear fuel assembly spacer grid based on 3D prints |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107195335B (en) | 2023-06-13 |
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