CN106409346A - Outer strip, location grid of nuclear reactor fuel subassembly, and nuclear reactor fuel subassembly - Google Patents
Outer strip, location grid of nuclear reactor fuel subassembly, and nuclear reactor fuel subassembly Download PDFInfo
- Publication number
- CN106409346A CN106409346A CN201610848626.7A CN201610848626A CN106409346A CN 106409346 A CN106409346 A CN 106409346A CN 201610848626 A CN201610848626 A CN 201610848626A CN 106409346 A CN106409346 A CN 106409346A
- Authority
- CN
- China
- Prior art keywords
- band
- pars intermedia
- outer band
- nuclear reactor
- wing
- 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
- 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
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- 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 an outer strip, a location grid of a nuclear reactor fuel subassembly, and the nuclear reactor fuel subassembly. According to the outer strip, in the longitudinal direction, the outer strip comprises an upper edge part, a middle part, and a lower edge part which are connected; on the upper edge part and/or the lower edge part, a plurality of guiding parts are formed via protruding towards the same side of the plane of the middle part; the guiding parts are arranged at intervals along the length direction of the outer strip; the middle part is used for connecting the upper edge part and the lower edge part in a plate shaped manner; buckling of the middle part, shaping like a plate, of the outer strip is not caused, so that the buckling strength of the location grid entire body is increased, and safe operation surplus capacity of the nuclear reactor fuel subassembly under reactor accident conditions is increased; the gaps between the outer strips of the adjacent location grids are narrowed, so that it is ensured that more cooling agent flows into the interior of the location grids for blending, better cooling agent blending performance is achieved, and reactor thermal working condition safe operation surplus capacity is increased.
Description
Technical field
The present invention relates to nuclear reactor technology field, more particularly, to a kind of outer band, the positioning of fuel assembly for nuclear reactor
Screen work and fuel assembly for nuclear reactor.
Background technology
At present, used in nuclear power plant both domestic and external, fuel assembly 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 along fuel assembly axially
Separated by a distance be fixed on guide pipe and gauge pipe, all grid spacers have identical grill unit arrangement and quantity,
Fuel rod, guide pipe and gauge pipe axially pass through the grill unit of the same position of each grid spacer one by one along fuel assembly.
In a kind of existing grid spacer, the lateral cross section of the outer band on periphery is in periodically to grill unit inflection
The bending structure of folding, the whole axial height of outer band because of this bending structure insertion, reduce grid spacer entirety prevent in the wrong
Qu Qiangdu, thus bring problems with：
If 1 reactor occurs the accident conditionses such as earthquake, the mutual collision between reactor core fuel assembly makes positioning lattice
Frame horizontal direction is collided power, thus being easier to make grid spacer, in bending region, flexing occur, destroys grid spacer.
2nd, when the fuel assembly of reactor in-core is carried out lifting etc. with operation, when consecutive fuel assembly 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 easily embeds adjacent combustion
The fuel rod zone line of material assembly, and then easily cause consecutive fuel assembly generation hook.
3rd, fuel assembly is after heap core inner is placed adjacent, because relatively low flow resistance between grid spacer, more cold
But agent can be flow through between band from adjacent positioned screen work, and is not involved in mixing, and this can reduce the cooling effect of fuel assembly,
Thermal technology's safe operation allowance of final decline low reaction heap.
In addition, the outer banded zone of existing grid spacer does not have the projected area of vertical direction (to remove beam thickness substantially
Projection), therefore outer band substantially will not to coolant produce mix effect.
Content of the invention
The technical problem to be solved in the present invention is, provides a kind of grid spacer for fuel assembly for nuclear reactor, carries
The anti-buckling intensity of high grid spacer and mix the outer band of performance and there is grid spacer and the nuclear reactor of this outer band
Fuel assembly.
The technical solution adopted for the present invention to solve the technical problems is：There is provided a kind of outer band, for nuclear reactor combustion
The grid spacer of material assembly, described outer band includes upper edge, pars intermedia and the lower edge being connected, described top in the vertical
Portion and/or lower edge are provided with and form multiple guide parts, multiple described guiding to the same side evagination of described pars intermedia place plane
Portion is spaced apart along described outer band length direction；Described pars intermedia is plate-shaped to be connected between described upper edge and lower edge.
Preferably, the outward flange of described guide part protrudes to the direction away from described pars intermedia, forms guide vane.
Preferably, the width of described guide vane from connect described pars intermedia one end to the one end away from described pars intermedia by
Gradually successively decrease.
Preferably, the angle between the plane at described guide vane edge place and horizontal plane is more than or equal to 50 degree.
Preferably, described guide part passes through to be stamped and formed out on described in edge and/or lower edge.
Preferably, the relative described pars intermedia place in the bottom surface planar tilt of the described guide part connecting with described pars intermedia,
Form guiding surface.
Preferably, the angle between described guiding surface and described 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 interval in band, the first of multiple parallel interval being arranged in described outer band；Institute
State band in band and second in first and intersect and form network-like grill unit.
Preferably, the guide part of described outer band is located at the adjacent lattice cell junction of described 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 in the horizontal and stretches in the lattice cell of described grill unit；
In described second, the top of band is provided with the second of the protrusion at multiple intervals and mixes the wing；Described second mixes the wing in horizontal stroke
The bending that is inclined upwardly is stretched in the lattice cell of described grill unit outmost turns lattice cell.
Preferably, adjacent described first mix the wing and second and mix the wing and stretch in the different lattice cells of described 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：On outer band, edge and/or lower edge are provided with the guide part that evagination is formed, and pars intermedia is in
Tabular, does not bend, thus improving the overall anti-buckling intensity of grid spacer, improves fuel assembly under reactor accident operating mode
Safe operation allowance；Reduce the gap between the outer band of adjacent positioned screen work, reduce coolant between adjacent positioned screen work
Gap flow through it is ensured that coolant more flows to participates in inside grid spacer mixing, thus have more preferable coolant mixing
Performance, improves thermal technology's safe operation allowance of reactor.
Bottom surface that guide part is connected with pars intermedia is oblique, the coolant that flow through this region can be played certain extra
Mix effect, thus further enhancing the heat transfer effect of fuel rod, improve reactor thermal technology's safe operation allowance.
Brief description
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 the front view of Fig. 2；
Fig. 4 is the side view of Fig. 2；
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 the front view of Fig. 5；
Fig. 7 is the structural representation of the fuel assembly for nuclear reactor of one embodiment of the invention；
Fig. 8 be one embodiment of the invention two groups of fuel assembly for nuclear reactor adjacent when part-structure schematic diagram.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing describes in detail
The specific 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,
Setting in first of the multiple parallel interval in outer band 10 band 20 and multiple parallel interval second in band 30；First
In interior band 20 and second, band 30 intersects and forms network-like grill unit 40.
Grill unit 40 includes the lattice cell 41 of multiple adjacent successively connections, lattice cell 41 hollow, is respectively used to fuel rod, guiding
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 and form multiple guide parts 14 to the same side evagination of pars intermedia 12 place plane,
Multiple guide parts 14 are spaced apart along outer band 10 length direction；Pars intermedia 12 is plate-shaped to connect portion 11 and lower edge 13 on top
Between, improve the anti-buckling intensity of grid spacer.
Guide part 14 passes through to be stamped and formed out on top in portion 11 and/or lower edge 13.Guide part 14 may include connect perpendicular
The side wall of straight shape and bottom surface, bottom surface is connected with pars intermedia 12.
The bottom surface of the guide part 14 connecting with pars intermedia 12 is relative to pars intermedia 12 place plane (or side wall of guide part 14)
Tilt, form guiding surface 15.Preferably, the angle α between guiding surface 15 and pars intermedia 12 place plane is less than 45 degree.Should
Guiding surface 15 formed in punching press guide part 14 so that outer band 10 (as the top view of Fig. 1) has necessarily in vertical direction
Projected area, the coolant flowing through this region is played and certain extra mixes effect, thus strengthening the heat exchange of fuel rod
Effect, improves 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 in upper edge 11 14 and under
Guide part 14 in edge 13 is in specular.
In addition, the outward flange of guide part 14 protrudes to the direction away from pars intermedia 12, form guide vane 16.Guide vane 16
Width gradually successively decreases from the one end connecting pars intermedia 12 to the one end away from pars intermedia 12.Guide vane 16 corresponds to multiple guide parts 14
Along long strip 20 length direction spaced apart so that the outward flange indentation of upper edge 11 and/or lower edge 13.
The setting of guide vane 16 in upper edge 11, its edge is in be inclined upwardly on side, has guide effect, lower edge
The edge of 13 corresponding guide vanes 16 is in then downward-sloping, has guide effect.Specifically, during loading and unloading, grid spacer 1
Along fuel assembly axially-movable, when the lower limb of grid spacer 1 above and the top edge of underlying grid spacer 1
Come in contact, because the inclination at guide vane 16 edge, the movement locus that two grid spacers 1 produce other side away from each other can be compeled,
Thus avoiding two grid spacers 1 that hook occurs.
The angle of inclination at guide vane 16 edge must be sufficiently large, thus ensureing to produce when adjacent nuclear fuel assembly collides
Raw load is not too large.Preferably, the plane that guide vane 16 edge is located is inclined plane, itself angle β and horizontal plane between
More than or equal to 50 degree, as shown in Figure 4.
The evagination height of guide part 14 pars intermedia 12 place plane relatively also need sufficiently large it is ensured that the top of guide vane 16 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 carries out chamfered further, reduces fuel stack
There is the risk of hooking in part.On grid spacer 1, the guide part 14 of outer band 10 protrudes to grill unit 40 inner side direction.And
And, guide part 14 is located at adjacent lattice cell 41 junction of grill unit 40 outmost turns lattice cell 41.
As shown in Fig. 2 in the present embodiment, the multiple guide parts 14 on outer band 10 are located at grill unit 40 outermost hedge
Often two neighboring lattice cell 41 junction in unit 41, that is,：The joint of each band 20 and outer band 10 in first, each
In second, band 30 and the joint of outer band 10 are equipped with a guide part 14.Preferably, between two neighboring guide part 14
Distance be less than a lattice cell 41 width.
In the grid spacer 1 of the present embodiment, in band 20 and second in first, band 30 is mutually perpendicular to.
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 in the horizontal and stretches in the lattice cell 41 of grill unit 40, 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 in the horizontal and stretches in the lattice cell 41 of grill unit 40, and that improves grid spacer mixes performance.Adjacent
One mixes the wing 21 and second mixes the wing 31 and stretches in the different lattice cells 41 of grill unit 40 it is ensured that only one of which in each lattice cell 41
Mix the wing.
Maximize for making grid spacer 1 mix function, first mixes the wing 21 and second is mixed the wing 31 and divided with certain rule
On band 30 in cloth band 20 and second in first.According to the flow direction of coolant, positioned at coolant flow to parallel direction
On first mix the wing 21 and second to mix the wing 31 incline direction 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, setting in first of the multiple parallel interval in outer band 10 band 20 and multiple parallel interval second in band 30；
In band 20 and second in first, band 30 intersects and forms network-like grill unit 40.
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 and forms multiple guide parts 14, multiple guide parts 14 to the same side evagination of pars intermedia 12 place plane
Spaced apart along outer band 10 length direction；Pars intermedia 12 is plate-shaped to be connected on top between portion 11 and lower edge 13, and it is fixed to improve
The anti-buckling intensity of position screen work.
Outer band 10 in the present embodiment from unlike above-mentioned Fig. 1-4 illustrated embodiment China and foreign countries band 10：Multiple guiding
Portion 14 is located at adjacent successively two lattice cell 41 junctions in grill unit 40 outmost turns lattice cell 41, adjacent two guide parts 14
Between between be separated with one first band 30 in band 20 or 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. all can refer to described in above-mentioned Fig. 1-4 illustrated embodiment, here
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 in the horizontal and stretches in the lattice cell 41 of grill unit 40, and that improves grid spacer mixes performance.Bar in second
What the top with 30 also was provided with the protrusion at multiple intervals second mixes the wing 31, and second mixes the wing 31 tilts bending in the horizontal and stretch into
In the lattice cell 41 of grill unit 40, that improves grid spacer mixes performance.Adjacent first is mixed the wing 21 and second and mixes the wing 31
Stretch in the different lattice cells 41 of grill unit 40 it is ensured that only one of which mixes the wing in each lattice cell 41.
Maximize for making grid spacer 1 mix function, first mixes the wing 21 and second is mixed the wing 31 and divided with certain rule
On band 30 in cloth band 20 and second in first.As shown in Figure 5, the flow direction according to coolant (shown in arrow in Fig. 5),
It is located at and mix the wing 21 and second with coolant flow to first on parallel direction to mix the wing 31 incline direction consistent.Corresponding first
Mix the layout that the wing 21 and second is mixed on band 30 in the wing 31 band 20 and second in first, multiple on outer band 10 lead
To portion 14 arranged for interval, thus ensureing laterally mixing between consecutive fuel assembly, improve reactor core thermal technology's allowance.
As shown in fig. 7, the fuel assembly for nuclear reactor of one embodiment of the invention, including above-mentioned Fig. 1-4 illustrated embodiment or
Fig. 5, the grid spacer 1 of 6 illustrated embodiments.
Fuel assembly for nuclear reactor also includes the upper base 2 being oppositely arranged and bottom nozzle 3, several guide pipe 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 be arranged between 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 is provided with for fixed guide
The fixing hole of pipe and the runner passing through for coolant.Upper base 3 may also comprise matching disc, and matching disc is provided with for fixed guide pipe
Fixing hole and the runner passing through for coolant.
In conjunction with shown in Fig. 3,5 and Fig. 8, in this fuel assembly for nuclear reactor, special due to grid spacer 1 China and foreign countries' band 10
Setting, in two adjacent group fuel assemblies, beyond the adjacent grid spacer of correspondence 1, band 10 is relative, because outer band 10 has
There is the pars intermedia 12 of tabular, reduce the gap 100 between relative outer band 10 so that coolant more flows to positioning lattice
Frame 1 is internal to be participated in mixing, thus having more preferable coolant to mix performance, improves thermal technology's safe operation allowance of reactor.
In this fuel assembly for nuclear reactor, because grid spacer 1 has higher anti-bend compared to traditional grid spacer
Qu Qiangdu, when operating reactor experience earthquake operating mode, fuel assembly can bear higher seismic (seismal relatively, thus
There is higher probability to keep to cool down shape under reactor earthquake operating mode, and then reduce reactor core and damage and put in a large number
The probability of penetrating property substance release.
In this 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, has a more preferable heat-transfer effect, and then can reduce the running temperature of nuclear fuel assembly, improve run under nominal situation abundant
Amount, it is also possible to postpone the accident process under accident conditions, may finally reduce reactor core probability of damage.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description 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 (12)
1. a kind of outer band, the grid spacer for fuel assembly for nuclear reactor it is characterised in that described outer band in the vertical
Including the upper edge being connected, pars intermedia and lower edge, described upper edge and/or lower edge are provided with to be located to described pars intermedia and put down
The same side evagination in face forms multiple guide parts, and multiple described guide parts are spaced apart along described outer band length direction；Described
Pars intermedia is plate-shaped to be connected between described upper edge and lower edge.
2. outer band according to claim 1 is it is characterised in that the outward flange of described guide part is to away from described pars intermedia
Direction protrude, formed guide vane.
3. outer band according to claim 2 is it is characterised in that the width of described guide vane is from the described pars intermedia of connection
Gradually successively decrease to the one end away from described pars intermedia in one end.
4. outer band according to claim 3 it is characterised in that described guide vane the edge plane and the horizontal plane that are located it
Between angle be more than or equal to 50 degree.
5. outer band according to claim 1 is it is characterised in that described guide part passes through to be stamped and formed out edge on described
And/or in lower edge.
6. outer band according to claim 1 is it is characterised in that the bottom surface of the described guide part connecting with described pars intermedia
Described pars intermedia place planar tilt relatively, forms guiding surface.
7. outer band according to claim 6 it is characterised in that described guiding surface and described pars intermedia place plane it
Between angle be less than 45 degree.
8. a kind of grid spacer of fuel assembly for nuclear reactor is it is characterised in that include outer bar described in any one of claim 1-7
Band in the second of band and multiple parallel interval in band, the first of multiple parallel interval being arranged in described outer band；Institute
State band in band and second in first and intersect and form network-like grill unit.
9. grid spacer according to claim 8 is it is characterised in that the guide part of described outer band is located at described grid list
The adjacent lattice cell junction of first outmost turns lattice cell.
10. grid spacer according to claim 8 it is characterised in that in described first the top of band be provided with multiple
Every protrusion first mix the wing；Described first mix the wing in the horizontal tilt bending stretch in the lattice cell of described grill unit；
In described second, the top of band is provided with the second of the protrusion at multiple intervals and mixes the wing；Described second mixes the wing in the horizontal
Tilt bending to stretch in the lattice cell of described grill unit.
11. grid spacers according to claim 10 are it is characterised in that adjacent described first mixes the wing and second and mix
The wing stretches in the different lattice cells of described grill unit.
A kind of 12. fuel assembly for nuclear reactor are it is characterised in that include the grid spacer described in any one of claim 8-11.
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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| Publication Number | Publication Date |
|---|---|
| CN106409346A true CN106409346A (en) | 2017-02-15 |
| CN106409346B 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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| CN (1) | CN106409346B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN109920561A (en) * | 2019-02-27 | 2019-06-21 | 广东核电合营有限公司 | Fuel assembly and grid spacer |
| 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 |
| CN113450931A (en) * | 2021-04-12 | 2021-09-28 | 中广核研究院有限公司 | Fuel assembly positioning grid, fuel assembly and reactor core |
| CN114188044A (en) * | 2021-11-18 | 2022-03-15 | 中国核动力研究设计院 | Positioning grid frame for enhancing mixing performance and fuel assembly |
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| CN105869682A (en) * | 2016-05-31 | 2016-08-17 | 中广核研究院有限公司 | Reactor core and fuel assembly thereof, grid frame and strip of grid frame |
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| US20050105677A1 (en) * | 2003-10-07 | 2005-05-19 | Kyung-Ho Yoon | Spacer grid for nuclear reactor fuel assemblies |
| CN103544997A (en) * | 2013-10-28 | 2014-01-29 | 中科华核电技术研究院有限公司 | Positioning grid rack and reactor fuel assembly |
| 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 keeps grid and with the fuel assembly of this maintenance grid |
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Cited By (8)
| 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 |
| 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 |
| CN110164567B (en) * | 2018-03-30 | 2023-01-17 | 吉林农业大学 | Pressurized water reactor fuel assembly grillwork |
| CN109920561A (en) * | 2019-02-27 | 2019-06-21 | 广东核电合营有限公司 | Fuel assembly and grid spacer |
| CN109920561B (en) * | 2019-02-27 | 2020-09-29 | 广东核电合营有限公司 | Fuel assembly and location grillwork |
| CN113450931A (en) * | 2021-04-12 | 2021-09-28 | 中广核研究院有限公司 | Fuel assembly positioning grid, fuel assembly and reactor core |
| CN114188044A (en) * | 2021-11-18 | 2022-03-15 | 中国核动力研究设计院 | Positioning grid frame for enhancing mixing performance and fuel assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106409346B (en) | 2017-12-15 |
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