CN106409346B - The grid spacer and fuel assembly for nuclear reactor of outer band, fuel assembly for nuclear reactor - Google Patents
The grid spacer and fuel assembly for nuclear reactor of outer band, fuel assembly for nuclear reactor Download PDFInfo
- Publication number
- CN106409346B CN106409346B CN201610848626.7A CN201610848626A CN106409346B CN 106409346 B CN106409346 B CN 106409346B CN 201610848626 A CN201610848626 A CN 201610848626A CN 106409346 B CN106409346 B CN 106409346B
- Authority
- CN
- China
- Prior art keywords
- band
- outer band
- pars intermedia
- grid spacer
- fuel assembly
- 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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Links
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 60
- 239000000446 fuel Substances 0.000 title claims abstract description 51
- 210000004027 cell Anatomy 0.000 claims description 27
- 238000005452 bending Methods 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 4
- 210000004692 intercellular junction Anatomy 0.000 claims description 2
- 239000002826 coolant Substances 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 11
- 239000003758 nuclear fuel Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 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
- G21C3/34—Spacer grids
- G21C3/3424—Fabrication of spacer 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
- G21C3/322—Means to influence the coolant flow through or around the bundles
-
- 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)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of outer band, the grid spacer and fuel assembly for nuclear reactor of fuel assembly for nuclear reactor, outer band includes upper edge, pars intermedia and the lower edge being connected in the vertical, the upper edge and/or lower edge, which are provided with to the same side evagination of plane where the pars intermedia, forms multiple guide parts, and multiple guide parts are spaced apart along the outer band length direction；The pars intermedia is plate-like to be connected between the upper edge and lower edge.The grid spacer of fuel assembly for nuclear reactor.In the present invention, outer band pars intermedia is plate-like not to be bent, and so as to improve the overall anti-buckling intensity of grid spacer, improves safe operation allowance of the fuel assembly under reactor accident operating mode；Reduce the gap between the outer band of adjacent positioned screen work, it is ensured that cooling agent more flows to be participated in mixing inside grid spacer, so as to mix performance with more preferable cooling agent, improves thermal technology's safe operation allowance of reactor.
Description
Technical field
The present invention relates to nuclear reactor technology field, more particularly to a kind of positioning of outer band, fuel assembly for nuclear reactor
Screen work and fuel assembly for nuclear reactor.
Background technology
At present, the fuel assembly used in nuclear power plant both domestic and external is typically made up of skeleton and fuel rod, skeleton typically by
Upper base, bottom nozzle, grid spacer, guide pipe, gauge pipe and connector etc. form, and all grid spacers are axial along fuel assembly
Separated by a distance to be fixed on guide pipe and gauge pipe, all grid spacers have the arrangement of identical grill unit and quantity,
Fuel rod, guide pipe and gauge pipe axially pass through the grill unit of the same position of each grid spacer along fuel assembly one by one.
In a kind of existing grid spacer, the lateral cross section of the outer band on periphery is in curved periodically into grill unit
The bending structure of folding, because the bending structure has penetrated the axial height of whole outer band, the entirety for reducing grid spacer is anti-in the wrong
Qu Qiangdu, so as to bring problems with：
The 1st, if the accident conditionses such as earthquake occur for reactor, the mutual collision between reactor core fuel component makes positioning lattice
Frame horizontal direction is collided power, so as to be easier to make grid spacer that flexing occurs in bending region, destroys grid spacer.
When the 2nd, lift etc. operation to the fuel assembly of reactor in-core, when consecutive fuel component is on horizontal level
Be staggered 1/2 lattice cell, and the plane domain (the non-bending region between bending structure) of the outer band of grid spacer is easily embedded in adjacent combustion
Expect the fuel rod intermediate region of component, and then easily cause consecutive fuel component and hook.
3rd, fuel assembly is after heap core inner is placed adjacent, more cold because flow resistance relatively low between grid spacer
But agent can be flowed through outside adjacent grid spacer between band, and be not involved in mixing, and this can reduce the cooling effect of fuel assembly, most
Thermal technology's safe operation allowance of final decline low reaction heap.
In addition, the projected area that the outer banded zone of existing grid spacer does not have vertical direction substantially (removes beam thickness
Projection), therefore outer band substantially will not to cooling agent produce the effect of mixing.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of grid spacer for fuel assembly for nuclear reactor, carries
The anti-buckling intensity of high grid spacer and mix performance outer band and with the outer band grid spacer and nuclear reactor
Fuel assembly.
The technical solution adopted for the present invention to solve the technical problems is：A kind of outer band is provided, fired for nuclear reactor
Expect the grid spacer of component, the outer band includes upper edge, pars intermedia and the lower edge being connected, the top in the vertical
Portion and/or lower edge, which are provided with to the same side evagination of plane where the pars intermedia, forms multiple guide parts, multiple guiding
Portion is spaced apart along the outer band length direction；The pars intermedia is plate-like to be connected between the upper edge and lower edge.
Preferably, the outward flange of the guide part is protruded to the direction away from the pars intermedia, forms guide vane.
Preferably, the width of the guide vane from connect one end of the pars intermedia to one end away from the pars intermedia by
Gradually successively decrease.
Preferably, the angle between the plane where the guide vane edge and horizontal plane is more than or equal to 50 degree.
Preferably, the guide part is by being stamped and formed out on described in edge and/or lower edge.
Preferably, planar tilt where the relative pars intermedia in the bottom surface of the guide part to connect with the pars intermedia,
Form guiding surface.
Preferably, the angle between the guiding surface and pars intermedia place plane is less than 45 degree.
The present invention also provides a kind of grid spacer of fuel assembly for nuclear reactor, including the outer bar described in any of the above item
Band in the second of band and multiple parallel intervals in band, the first of multiple parallel intervals be arranged in the outer band；Institute
State in first that band intersects to form network-like grill unit in band and second.
Preferably, the guide part of the outer band is located at the adjacent lattice cell junction of the grill unit.
Preferably, the top of band is provided with the first of the protrusion at multiple intervals and mixes the wing in described first；Described first stirs
The mixed wing tilts bending and stretched into the lattice cell of the grill unit in the horizontal；
The top of band is provided with the second of the protrusion at multiple intervals and mixes the wing in described second；Described second mixes the wing in horizontal stroke
The bending that is inclined upwardly is stretched into the lattice cell of the grill unit outmost turns lattice cell.
Preferably, adjacent described first mix the wing and second and mix the wing and stretch into the different lattice cells of the grill unit.
The present invention also provides a kind of fuel assembly for nuclear reactor, it is characterised in that including the positioning described in any of the above item
Screen work.
Beneficial effects of the present invention：Edge and/or lower edge are provided with the guide part that evagination is formed on outer band, and pars intermedia is in
Tabular, do not bend, so as to improve the overall anti-buckling intensity of grid spacer, improve fuel assembly under reactor accident operating mode
Safe operation allowance；The gap between the outer band of adjacent positioned screen work is reduced, reduces cooling agent between adjacent grid spacer
Gap flow through, it is ensured that cooling agent, which more flows to, to be participated in inside grid spacer mixing, so as to be mixed with more preferable cooling agent
Performance, improve thermal technology's safe operation allowance of reactor.
The bottom surface that guide part is connected with pars intermedia is oblique, the cooling agent that flow through the region can be played certain extra
The effect of mixing, so as to further enhance the heat transfer effect of fuel rod, improve reactor thermal technology's safe operation allowance.
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 overlooking the structure diagram of the grid spacer of the fuel assembly for nuclear reactor of one embodiment of the invention；
Fig. 2 is the part-structure top view of grid spacer shown in Fig. 1；
Fig. 3 is Fig. 2 front view；
Fig. 4 is Fig. 2 side view；
Fig. 5 is the part-structure top view of the grid spacer of the fuel assembly for nuclear reactor of another embodiment of the present invention；
Fig. 6 is Fig. 5 front view；
Fig. 7 is the structural representation of the fuel assembly for nuclear reactor of one embodiment of the invention；
Fig. 8 is part-structure schematic diagram when two groups of the fuel assembly for nuclear reactor of one embodiment of the invention is adjacent.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now compares accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in Figure 1, 2, the grid spacer 1 of the fuel assembly for nuclear reactor of one embodiment of the invention, including outer band 10,
Band 30 in the second of band 20 and multiple parallel intervals in the first of the multiple parallel intervals being arranged in outer band 10；First
Band 30 intersects to form network-like grill unit 40 in interior band 20 and second.
Grill unit 40 includes the lattice cell 41 of multiple connections adjacent successively, and lattice cell 41 is hollow, is respectively used to fuel rod, is oriented to
Pipe through.
As shown in Figure 3,4, outer band 10 includes upper edge 11, pars intermedia 12 and the lower edge 13 being connected in the vertical.
Wherein, upper edge 11 and/or lower edge 13 are provided with to the same side evagination of the place plane of pars intermedia 12 and form multiple guide parts 14,
Multiple guide parts 14 are spaced apart along the outer length direction of band 10；Pars intermedia 12 is plate-like to connect portion 11 and lower edge 13 on top
Between, improve the anti-buckling intensity of grid spacer.
Guide part 14 is by being stamped and formed out in portion 11 on top and/or lower edge 13.What guide part 14 may include to connect erects
The side wall of straight shape and bottom surface, bottom surface connect with pars intermedia 12.
The place plane of pars intermedia 12 (or side wall of guide part 14) relative with the bottom surface for the guide part 14 that pars intermedia 12 connects
Tilt, form guiding surface 15.Preferably, the angle α between guiding surface 15 and the place plane of pars intermedia 12 is less than 45 degree.Should
Guiding surface 15 is formed in punching press guide part 14 so that (such as Fig. 1 top view) has necessarily outer band 10 in vertical direction
Projected area, certain extra effect of mixing is played to the cooling agent for flowing through the region, so as to strengthen the heat exchange of fuel rod
Effect, improve reactor thermal technology's safe operation allowance.
In the present embodiment, upper edge 11 and lower edge 13 are equipped with guide part 14, guide part 14 in upper edge 11 and under
Guide part 14 in edge 13 is in specular.
In addition, the outward flange of guide part 14 is protruded to the direction away from pars intermedia 12, guide vane 16 is formed.Guide vane 16
Width gradually successively decreases from the one end for connecting pars intermedia 12 to one end away from pars intermedia 12.The corresponding multiple guide parts 14 of guide vane 16
It is spaced apart along the length direction of long strip 20 so that the outward flange of upper edge 11 and/or lower edge 13 is serrated.
The setting of guide vane 16 in upper edge 11, its edge, in being inclined upwardly, have guide effect, lower edge on side
The edge of 13 corresponding guide vanes 16 has guide effect then in tilting down.Specifically, during loading and unloading, grid spacer 1
It is axially moved along fuel assembly, when the top edge of the lower edge and underlying grid spacer 1 of grid spacer 1 above
It is in contact, because the inclination at the edge of guide vane 16, the movement locus that two grid spacers 1 produce other side away from each other can be compeled,
So as to avoid two grid spacers 1 from hooking.
The angle of inclination at the edge of guide vane 16 must be sufficiently large, so as to ensure to produce when adjacent nuclear fuel assembly collides
Raw load is not too large.Preferably, the plane where the edge of guide vane 16 is inclined plane, its angle β between horizontal plane
More than or equal to 50 degree, as shown in Figure 4.
Guide part 14 also needs sufficiently large with respect to the evagination height of the place plane of pars intermedia 12, it is ensured that the top of guide vane 16 is not
The inside of adjacent positioned screen work can be embedded into, distinguish the guide effect of its own.
In addition, in outer band 10, the edge of upper edge 11 and lower edge 13 further carries out chamfered, reduces fuel stack
The risk of hooking occurs for part.On grid spacer 1, the guide part 14 of outer band 10 side direction into grill unit 40 is protruded.And
And guide part 14 is located at the adjacent junction of lattice cell 41 of the outmost turns lattice cell 41 of grill unit 40.
As shown in Fig. 2 in the present embodiment, multiple guide parts 14 on outer band 10 are located at the outermost hedge of grill unit 40
Per the two neighboring junction of lattice cell 41 in member 41, i.e.,：The joint of each band 20 and outer band 10 in first, each
The joint of band 30 and outer band 10 is equipped with a guide part 14 in second.Preferably, between two neighboring guide part 14
Distance be less than the width of lattice cell 41.
In the grid spacer 1 of the present embodiment, band 30 is mutually perpendicular in band 20 and second in first.
Further, the top of band 20 is provided with the first of the protrusion at multiple intervals and mixes the wing 21 in first, and first mixes
The wing 21 tilts bending and stretched into the lattice cell 41 of grill unit 40 in the horizontal, and that improves grid spacer mixes performance.
Preferably, the top of band 30 also is provided with the second of the protrusion at multiple intervals and mixes the wing 31 in second, and second mixes
The wing 31 tilts bending and stretched into the lattice cell 41 of grill unit 40 in the horizontal, and that improves grid spacer mixes performance.Adjacent
One, which mixes the wing 21 and second, mixes the wing 31 and stretches into the different lattice cells 41 of grill unit 40, it is ensured that only one in each lattice cell 41
Mix the wing.
To cause grid spacer 1 mixes function to maximize, first, which mixes the wing 21 and second, mixes the wing 31 with certain rule point
Cloth is in first in band 20 and second on band 30.According to the flow direction of cooling agent, positioned at coolant flow to parallel direction
On first mix the wing 21 with second to mix the incline direction of the wing 31 consistent.
As shown in Figure 5,6, the grid spacer 1 of the fuel assembly for nuclear reactor of another embodiment of the present invention, including outer band
10th, band 30 in the second of band 20 and multiple parallel intervals in the first of the multiple parallel intervals being arranged in outer band 10；
Band 30 intersects to form network-like grill unit 40 in band 20 and second in first.
Outer band 10 includes upper edge 11, pars intermedia 12 and the lower edge 13 being connected in the vertical.Wherein, upper edge 11
And/or lower edge 13 is provided with to the same side evagination of the place plane of pars intermedia 12 and forms multiple guide parts 14, multiple guide parts 14
It is spaced apart along the outer length direction of band 10；For the plate-like connection of pars intermedia 12 on top between portion 11 and lower edge 13, it is fixed to improve
The anti-buckling intensity of position screen work.
Outer band 10 in the present embodiment is unlike above-mentioned Fig. 1-4 illustrated embodiments China and foreign countries band 10：Multiple guiding
Portion 14 is located at two junctions of lattice cell 41 adjacent successively in the outmost turns lattice cell 41 of grill unit 40, adjacent two guide parts 14
Between between be separated with one first band 30 in band 20 or one second.Preferably, between two neighboring guide part 14 away from
From the width equal to or more than a lattice cell 41.
In the present embodiment, other structures of outer band 10 etc. can refer to described in above-mentioned Fig. 1-4 illustrated embodiments, herein
Repeat no more.
Further, the top of band 20 is provided with the first of the protrusion at multiple intervals and mixes the wing 21 in first, and first mixes
The wing 21 tilts bending and stretched into the lattice cell 41 of grill unit 40 in the horizontal, and that improves grid spacer mixes performance.Bar in second
The second of the protrusion at multiple intervals also is provided with 30 top and mixes the wing 31, second mixes the wing 31 tilts bending and stretch into the horizontal
In the lattice cell 41 of grill unit 40, that improves grid spacer mixes performance.Adjacent first mixes the wing 21 and second and mixes the wing 31
Stretch into the different lattice cells 41 of grill unit 40, it is ensured that mix the wing for only one in each lattice cell 41.
To cause grid spacer 1 mixes function to maximize, first, which mixes the wing 21 and second, mixes the wing 31 with certain rule point
Cloth is in first in band 20 and second on band 30.As shown in Figure 5, according to the flow direction (shown in arrow in Fig. 5) of cooling agent,
Positioned at mixing the wing 21 to first on parallel direction with coolant flow and second to mix the incline direction of the wing 31 consistent.Corresponding first
The wing 21 and second is mixed to mix multiple in the layout in first in band 20 and second on band 30, outer band 10 of the wing 31 and lead
To the arranged for interval of portion 14, so as to ensure that the transverse direction between consecutive fuel component is mixed, reactor core thermal technology's allowance is improved.
As shown in fig. 7, the fuel assembly for nuclear reactor of one embodiment of the invention, including above-mentioned Fig. 1-4 illustrated embodiments or
Fig. 5,6 illustrated embodiments grid spacer 1.
Fuel assembly for nuclear reactor also includes the upper base 2 that is oppositely arranged and bottom nozzle 3, several guide pipes 4 and several
Fuel rod group 5.Several grid spacers 1 are arranged at axially spaced intervals between upper base 2 and bottom nozzle 3 along fuel assembly, and guide pipe 4 is worn
Cross grid spacer 1 and installed between upper base 2 and bottom nozzle 3, fuel rod 5 is held among the lattice cell of grid spacer 1.
Bottom nozzle 2 may include matching disc and the supporting leg being connected to below matching disc, and matching disc, which is provided with, is used for fixed guide
The fixing hole of pipe and the runner passed through for cooling agent.Upper base 3 may also comprise matching disc, and matching disc, which is provided with, is used for fixed guide pipe
Fixing hole and the runner that passes through for cooling agent.
It is special due to the China and foreign countries' band 10 of grid spacer 1 in the fuel assembly for nuclear reactor with reference to shown in Fig. 3,5 and Fig. 8
Set, in two adjacent group fuel assemblies, band 10 is relative beyond corresponding adjacent grid spacer 1, because outer band 10 has
There is the pars intermedia 12 of tabular, reduce the gap 100 between relative outer band 10 so that cooling agent more flows to positioning lattice
The inside of frame 1 participates in mixing, and so as to mix performance with more preferable cooling agent, improves thermal technology's safe operation allowance of reactor.
In the fuel assembly for nuclear reactor, because grid spacer 1 compared to traditional grid spacer has higher anti-bend
Qu Qiangdu, when operating reactor undergoes earthquake operating mode, fuel assembly can bear higher seismic (seismal relatively, so as to
There is higher probability to keep that shape can be cooled down under reactor earthquake operating mode, and then reduce reactor core damage and largely put
The probability of penetrating property substance release.
In the fuel assembly for nuclear reactor, by the setting of grid spacer 1 and its China and foreign countries' band 10, there is more preferable thermal technology
Performance, there is more preferable heat-transfer effect, and then the running temperature of nuclear fuel assembly can be reduced, run under raising nominal situation abundant
Amount, can also postpone the accident process under accident conditions, may finally reduce reactor core probability of damage.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (11)
1. a kind of outer band, the grid spacer for fuel assembly for nuclear reactor, it is characterised in that the outer band is in the vertical
Including upper edge, pars intermedia and the lower edge being connected, the upper edge and/or lower edge are provided with where to the pars intermedia and put down
The same side evagination in face forms multiple guide parts, and multiple guide parts are spaced apart along the outer band length direction；It is described
Pars intermedia is plate-like to be connected between the upper edge and lower edge；The bottom surface phase of the guide part to connect with the pars intermedia
To planar tilt where the pars intermedia, guiding surface is formed.
2. outer band according to claim 1, it is characterised in that the outward flange of the guide part is to away from the pars intermedia
Direction protrusion, formed guide vane.
3. outer band according to claim 2, it is characterised in that the width of the guide vane connects the pars intermedia certainly
Gradually successively decrease to one end away from the pars intermedia one end.
4. outer band according to claim 3, it is characterised in that plane where the guide vane edge and horizontal plane it
Between angle be more than or equal to 50 degree.
5. outer band according to claim 1, it is characterised in that the guide part is by being stamped and formed out the edge on described
And/or in lower edge.
6. outer band according to claim 1, it is characterised in that plane where the guiding surface and the pars intermedia it
Between angle be less than 45 degree.
7. a kind of grid spacer of fuel assembly for nuclear reactor, it is characterised in that including any one of the claim 1-6 outer bars
Band in the second of band and multiple parallel intervals in band, the first of multiple parallel intervals be arranged in the outer band；Institute
State in first that band intersects to form network-like grill unit in band and second.
8. grid spacer according to claim 7, it is characterised in that the guide part of the outer band is located at the grid list
The adjacent lattice cell junction of first outmost turns lattice cell.
9. grid spacer according to claim 7, it is characterised in that the top of band is provided with multiple intervals in described first
Protrusion first mix the wing；Described first mix the wing tilt in the horizontal bending stretch into the lattice cell of the grill unit；
The top of band is provided with the second of the protrusion at multiple intervals and mixes the wing in described second；Described second mixes the wing in the horizontal
Bending is tilted to stretch into the lattice cell of the grill unit.
10. grid spacer according to claim 9, it is characterised in that adjacent described first mixes the wing and second and mixed
The wing is stretched into the different lattice cells of the grill unit.
11. a kind of fuel assembly for nuclear reactor, it is characterised in that including the grid spacer described in claim any one of 7-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848626.7A CN106409346B (en) | 2016-09-23 | 2016-09-23 | The grid spacer and fuel assembly for nuclear reactor of outer band, fuel assembly for nuclear reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848626.7A CN106409346B (en) | 2016-09-23 | 2016-09-23 | The grid spacer and fuel assembly for nuclear reactor of outer band, fuel assembly for nuclear reactor |
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| CN106409346A CN106409346A (en) | 2017-02-15 |
| CN106409346B true CN106409346B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610848626.7A Active CN106409346B (en) | 2016-09-23 | 2016-09-23 | The grid spacer and fuel assembly for nuclear reactor of outer band, fuel assembly for nuclear reactor |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018053812A1 (en) * | 2016-09-23 | 2018-03-29 | 中广核研究院有限公司 | Outer strip, spacer grid for nuclear reactor fuel assembly and nuclear reactor fuel assembly |
| CN107230502A (en) * | 2017-06-09 | 2017-10-03 | 岭东核电有限公司 | Fuel assembly and its screen work and support insert |
| CN110164567B (en) * | 2018-03-30 | 2023-01-17 | 吉林农业大学 | A pressurized water reactor fuel assembly grid |
| CN109920561B (en) * | 2019-02-27 | 2020-09-29 | 广东核电合营有限公司 | Fuel assembly and location grillwork |
| CN113450931B (en) * | 2021-04-12 | 2022-10-28 | 中广核研究院有限公司 | Fuel assembly positioning grid, fuel assembly and reactor core |
| CN114188044B (en) * | 2021-11-18 | 2023-03-17 | 中国核动力研究设计院 | Positioning grid frame for enhancing mixing performance and fuel assembly |
| CN119153138B (en) * | 2024-11-20 | 2025-02-14 | 中国核动力研究设计院 | High-reliability fuel assembly with cooperative flow control |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100600983B1 (en) * | 2003-10-07 | 2006-07-13 | 한국원자력연구소 | Supporting Grid of Light Fuel Reactor Nuclear Fuel Assembly |
| CN103544997B (en) * | 2013-10-28 | 2016-08-17 | 中科华核电技术研究院有限公司 | Grid spacer and reactor fuel assemblies |
| CN203966568U (en) * | 2014-06-20 | 2014-11-26 | 中科华核电技术研究院有限公司 | Low pressure drop retaining grid and fuel assembly with such retaining grid |
| CN104485138B (en) * | 2014-12-05 | 2017-04-26 | 中广核研究院有限公司 | Rectification type guide vane structure and mixing grillage |
| CN105869682B (en) * | 2016-05-31 | 2018-05-25 | 中广核研究院有限公司 | The band of reactor core and its fuel assembly, screen work and screen work |
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Also Published As
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| CN106409346A (en) | 2017-02-15 |
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