CN109935366A - A kind of spacer grid of fuel assembly with fried dough twist profile bar band - Google Patents
A kind of spacer grid of fuel assembly with fried dough twist profile bar band Download PDFInfo
- Publication number
- CN109935366A CN109935366A CN201711369488.5A CN201711369488A CN109935366A CN 109935366 A CN109935366 A CN 109935366A CN 201711369488 A CN201711369488 A CN 201711369488A CN 109935366 A CN109935366 A CN 109935366A
- Authority
- CN
- China
- Prior art keywords
- fried dough
- profile bar
- dough twist
- grid
- spacer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 86
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 66
- 238000003032 molecular docking Methods 0.000 claims abstract description 42
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
Abstract
The present invention provides a kind of spacer grid of fuel assembly with fried dough twist profile bar band, which includes multiple fried dough twist profile bar bands；Each fried dough twist profile bar band includes n docking arc structure, and the outer of adjacent docking arc structure is plugged and fixed；Each docking arc structure is docked by the identical convex globoidal of two sections of radians and is formed；Multiple fried dough twist profile bar bands intersect the grid spacer to be formed in the latticed cell structure of n × n, and the crossover sites of multiple fried dough twist profile bar bands are to dock the outer of arc structure；Four walls inside the latticed grid of the grid spacer are convex globoidal structures, are contacted by four convex globoidals with fuel rod formation line and laterally clamp fuel rod.The present invention is formed by n × n fried dough twist profile bar band grafting, has compared original strip-type grid spacer, the present invention does not have outer band, and inside and outside band is consistent.The configuration of the present invention is simple, when manufacture it is required number of molds it is few, convenient for manufacture, while fluid resistance is small, has apparent advantage.
Description
Technical field
The present invention relates to fuel assembly technical fields, and in particular to a kind of fuel assembly positioning lattice with fried dough twist profile bar band
Frame.
Background technique
In nuclear power plant reactor operational process, the performance of nuclear fuel be influence nuclear reactor safety and economy it is important because
Element.Therefore the research of fuel element is placed on status very outstanding always in the world, by the design of optimization fuel element, used
The methods of advanced configuration material, improvement component manufacturing process, are continuously improved the various performances of nuclear fuel element, promote nuclear power to more
Safe and more economical direction is developed.
Existing PWR fuel assembly design in, fuel rod generally using grid spacer clamp it is hanging by the way of.Positioning
Screen work plays a part of support clamping to fuel element, and needs to resist the gravity of fuel element, due to the effect of irradiation,
The chucking power for clamping the spring of fuel rod can strongly reduce, and fuel rod can generally be fallen on bottom nozzle, make in the flowing of coolant
Under, fuel rod may upper and lower play, this will lead to the risk of fuel rod breakage.
To optimize the parameter of fuel element, and general fuel assembly form construction design is used, so that novel component
It can be suitable for current mature reactor core.Novel annular fuel element is such as used, outer diameter becomes larger, and weight increases, at this time
The chucking power of required grid spacer may increase about 2-4 times, can place that such as spring, just the space of convex 2 clamping piece has become smaller,
This probability that fuel element is fallen at runtime on bottom nozzle increases, and during to open heap again after cold-refueling
The probability of play also increases above and below fuel element.
Meanwhile in the design and manufacture of existing spacer grid of fuel assembly, grid spacer is substantially all by 6 groups of inside and outside band
At.Due to the complexity of its band, 30 multiple kinds of molds are needed when manufacturing.After mold determines, to change positioning lattice
The characteristic of frame, such as flow resistance generate better effect etc. to distribution of the coolant fuel assembly, need to change wherein
The shape of nearly all mold, considerably increases work load.
Therefore, it needs to design a kind of novel spacer grid of fuel assembly, with overcome the deficiencies in the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of annular fuel elements that can adapt to big outer diameter with fried dough twist profile bar band
Spacer grid of fuel assembly.
Realize that the technical solution of the object of the invention is as follows: a kind of spacer grid of fuel assembly with fried dough twist profile bar band, this is fixed
Position screen work includes multiple fried dough twist profile bar bands；Each fried dough twist profile bar band includes n docking arc structure, adjacent docking arc structure
Outer be plugged and fixed；Each docking arc structure is docked by the identical convex globoidal of two sections of radians and is formed；Described is multiple
Fried dough twist profile bar band intersects the grid spacer to be formed in the latticed cell structure of n × n, the crossover sites of multiple fried dough twist profile bar bands
For the outer for docking arc structure；Four walls inside the latticed grid of the grid spacer are convex globoidal structures, convex by four
Cambered surface contacts with fuel rod formation line and laterally clamps fuel rod.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, described in adjacent docking arc structure outer
It is plugged and fixed, is slot of the outer with grafting for docking arc structure, is plugged and fixed by slot.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, described in adjacent docking arc structure, wherein
The outer of one docking arc structure has the upper slot from top to middle part, another docking arc structure has from lower part to middle part
Lower slot；Docking is seated at middle part for upper slot and lower slot.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, wherein the value range of n is 2~18.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, described in each docking arc structure by two sections
The identical convex globoidal of radian docks to be formed, and radian numerical value is 0 ° to 180 °.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, described in preferably 30 ° to 60 ° of radian.
A kind of spacer grid of fuel assembly with fried dough twist profile bar band as described above, is mutually handed in multiple fried dough twist profile bar bands
Fork-shaped in the latticed cell structure of n × n grid spacer in, according to the guide pipe channel position of design, in fried dough twist profile bar band
Docking arc structure is changed to strip structure at corresponding guide pipe channel position, reserves guiding tube passage.
A kind of spacer grid of fuel assembly with fried dough twist profile bar band as described above, described in guiding tube passage in setting
Guide pipe, guide pipe are fixed with the adjacent convex arc outer wall for docking arc structure.
A kind of spacer grid of fuel assembly with fried dough twist profile bar band as described above, described in guiding tube passage and upper tube
Quantity, the position consistency of the guiding tube passage of seat.
A kind of annular fuel component of the present invention, the annular fuel component include upper tube socket, bottom nozzle, annular fuel
Stick, grid spacer and guide pipe, it is characterised in that: the grid spacer uses any of the above-described fuel with fried dough twist profile bar band
Component grid spacer.
A kind of reactor of the present invention, uses annular fuel component, the annular fuel component include upper tube socket, under
Tube socket, annular fuel rod, grid spacer and guide pipe；Grid spacer described in it is using any of the above-described with fried dough twist profile bar band
Spacer grid of fuel assembly.
Remarkable result of the invention is:
Spacer grid of fuel assembly of the present invention with fried dough twist profile bar band, by 2 × 2 to 18 × 18 fried dough twist profile bar bands
Grafting forms, and has compared original strip-type grid spacer, the present invention does not have outer band, and inside and outside band is consistent.Therefore this hair
Bright structure is simple, when manufacture it is required number of molds it is few, convenient for manufacture, while fluid resistance is small, has apparent advantage.
Fried dough twist profile bar band includes n docking arc structure, and band convexity globoidal structure undertakes supporting role, with existing positioning lattice
Frame is compared, and additional supporting element is not needed, and is contacted by four convex globoidal structures with fuel rod formation line and is laterally clamped fuel
Stick.
Common rod shape fuel member can also be applied in spacer grid of fuel assembly of the present invention with fried dough twist profile bar band
Part, and coolant can be made more fully to contact with fuel element.
Spacer grid of fuel assembly of the present invention with fried dough twist profile bar band is used for annular fuel component, can be suitable for
The fuel element of bigger outer diameter provides located lateral to fuel element and generates certain effect of mixing to coolant.
Detailed description of the invention
Fig. 1 is a kind of spacer grid of fuel assembly structural schematic diagram with fried dough twist profile bar band of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the connected structure schematic diagram of fried dough twist profile bar band；
Fig. 4 is underthrust slot structure schematic diagram；
Fig. 5 is upper inserting slot construction schematic diagram；
Fig. 6 is the spacer grid of fuel assembly partial structural diagram of the fried dough twist profile bar band with guiding tube passage.
In figure: 1. fried dough twist profile bar bands；2. docking arc structure；3. convex globoidal；4. outer；Slot on 5.；6. lower slot；7. leading
To tube passage.
Specific embodiment
It is fixed to a kind of fuel assembly with fried dough twist profile bar band of the present invention with reference to the accompanying drawings and detailed description
Position screen work is described further.
Embodiment 1
As shown in Figures 1 to 5, a kind of spacer grid of fuel assembly with fried dough twist profile bar band of the present invention, the positioning
Screen work includes 14 × 14 fried dough twist profile bar bands 1；
Each fried dough twist profile bar band 1 includes 13 docking arc structures 2, and 4 grafting of outer of adjacent docking arc structure 2 is solid
It is fixed；Each docking arc structure 2 is formed by the identical docking of convex globoidal 3 of two sections of radians；
14 × 14 fried dough twist profile bar bands 1 intersect the positioning lattice to be formed in 13 × 13 latticed cell structures
Frame, the crossover sites of fried dough twist profile bar band are to dock the outer 4 of arc structure 2；
As shown in Fig. 2, four walls inside the latticed grid of the grid spacer are 3 structures of convex globoidal, it is convex by four
Cambered surface 3 contacts with fuel rod formation line and laterally clamps fuel rod.
As shown in Figures 3 to 5, the outer 4 of the adjacent docking arc structure is plugged and fixed, and is the outer of docking arc structure 2
Along the slot with grafting, it is plugged and fixed by slot.The adjacent docking arc structure 2, one of docking arc structure 2
Outer has the upper slot 5 from top to middle part, another docking arc structure is with the lower slot 6 from lower part to middle part；It is upper to insert
Docking is seated at middle part for slot 5 and lower slot 6.
Each docking arc structure 2 is docked by the identical convex globoidal of two sections of radians to be formed, radian numerical value be 0 ° extremely
180 degree.Preferably 30 ° to 60 degree of the radian (such as: 30 °, 45 ° or 60 °).
Embodiment 2
Difference from Example 1 is:
As shown in fig. 6, a kind of spacer grid of fuel assembly with fried dough twist profile bar band, the grid spacer described in the present embodiment
Including 18 × 18 fried dough twist profile bar bands.
18 × 18 fried dough twist profile bar bands intersect in the grid spacer to be formed in 17 × 17 latticed cell structures, according to
7 position of guiding tube passage of design is accordingly oriented at 7 position of tube passage in fried dough twist profile bar band docking arc structure being changed to stripe shape knot
Structure reserves guiding tube passage 7.
Guide pipe is set in the guiding tube passage 7, and guide pipe is fixed with the adjacent convex arc outer wall for docking arc structure.
Quantity, the position consistency of the guiding tube passage of the guiding tube passage 7 and upper tube socket.
Embodiment 3
A kind of annular fuel component, the annular fuel component include upper tube socket, bottom nozzle, annular fuel rod, grid spacer
And guide pipe, the grid spacer is using above-described embodiment 1 or the fuel of either strap fried dough twist profile bar band as described in example 2
Component grid spacer.
Embodiment 4
A kind of reactor uses annular fuel component, which includes upper tube socket, bottom nozzle, annular combustion
Charge bar, grid spacer and guide pipe；Grid spacer described in it uses embodiment 1 or either strap fried dough twist as described in example 2
The spacer grid of fuel assembly of profile bar band.
Claims (11)
1. a kind of spacer grid of fuel assembly with fried dough twist profile bar band, it is characterised in that: the grid spacer includes multiple fried dough twist types
Band (1)；Each fried dough twist profile bar band (1) includes n docking arc structure (2), the outer of adjacent docking arc structure (2)
(4) it is plugged and fixed；Each docking arc structure (2) is formed by identical convex globoidal (3) docking of two sections of radians；
Multiple fried dough twist profile bar bands (1) intersect the grid spacer to be formed in the latticed cell structure of n × n, Duo Gema
The crossover sites of flower pattern band are to dock the outer (4) of arc structure (2)；Four walls inside the latticed grid of the grid spacer are equal
It is convex globoidal (3) structure, is contacted by four convex globoidals (3) with fuel rod formation line and laterally clamp fuel rod.
2. the spacer grid of fuel assembly according to claim 1 with fried dough twist profile bar band, it is characterised in that: described is adjacent
The outer (4) of docking arc structure is plugged and fixed, and is slot of the outer with grafting for docking arc structure (2), passes through slot grafting
It is fixed.
3. the spacer grid of fuel assembly according to claim 2 with fried dough twist profile bar band, it is characterised in that: described is adjacent
It docks arc structure (2), the outer of one of docking arc structure (2) has the upper slot (5) from top to middle part, another is right
Arc structure is connect with the lower slot (6) from lower part to middle part；Docking is seated at middle part for upper slot (5) and lower slot (6).
4. the spacer grid of fuel assembly according to claim 1 with fried dough twist profile bar band, it is characterised in that: the value model of n
Enclose is 2~18.
5. the spacer grid of fuel assembly according to claim 1 with fried dough twist profile bar band, it is characterised in that: each of described
Docking arc structure (2) is docked by the identical convex globoidal of two sections of radians to be formed, and radian numerical value is 0 ° to 180 °.
6. the spacer grid of fuel assembly according to claim 5 with fried dough twist profile bar band, it is characterised in that: the radian
It is preferred that 30 ° to 60 °.
7. a kind of spacer grid of fuel assembly with fried dough twist profile bar band according to claim 1, it is characterised in that: multiple
Fried dough twist profile bar band intersects in the grid spacer to be formed in the latticed cell structure of n × n, according to the guiding tube passage of design
(7) position is accordingly oriented at tube passage (7) position in fried dough twist profile bar band docking arc structure being changed to strip structure, reserves and lead
To tube passage (7).
8. a kind of spacer grid of fuel assembly with fried dough twist profile bar band according to claim 7, it is characterised in that: described
It is oriented in tube passage (7) and guide pipe is set, guide pipe is fixed with the adjacent convex arc outer wall for docking arc structure.
9. a kind of spacer grid of fuel assembly with fried dough twist profile bar band according to claim 7, it is characterised in that: described
It is oriented to quantity, the position consistency of the guiding tube passage of tube passage (7) and upper tube socket.
10. a kind of annular fuel component, the annular fuel component include upper tube socket, bottom nozzle, annular fuel rod, grid spacer with
And guide pipe, it is characterised in that: the grid spacer uses the combustion of either strap fried dough twist profile bar band described in claim 1 to 9
Expect component grid spacer.
11. a kind of reactor uses annular fuel component, which includes upper tube socket, bottom nozzle, annular fuel
Stick, grid spacer and guide pipe；It is characterized by: the grid spacer is using the fiber crops of either strap described in claim 1 to 9
The spacer grid of fuel assembly of flower pattern band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711369488.5A CN109935366A (en) | 2017-12-19 | 2017-12-19 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711369488.5A CN109935366A (en) | 2017-12-19 | 2017-12-19 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109935366A true CN109935366A (en) | 2019-06-25 |
Family
ID=66983173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711369488.5A Pending CN109935366A (en) | 2017-12-19 | 2017-12-19 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109935366A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1531996A (en) * | 1966-07-21 | 1968-07-05 | Atomic Energy Authority Uk | Spacer grid for a fuel assembly for a nuclear reactor |
| JPS60152984A (en) * | 1984-01-23 | 1985-08-12 | 株式会社東芝 | Fuel spacer |
| CN85109766A (en) * | 1984-12-06 | 1986-07-09 | 法玛汤姆和柯吉玛公司 | Fuel assembly for nuclear reactors |
| CN1035384A (en) * | 1987-11-24 | 1989-09-06 | 西门子公司 | Debris resistant fuel assembly |
| CN103971759A (en) * | 2014-05-28 | 2014-08-06 | 中科华核电技术研究院有限公司 | Locating grid |
| CN104021821A (en) * | 2014-06-20 | 2014-09-03 | 中科华核电技术研究院有限公司 | Holding grille and fuel assembly with same |
| CN105469838A (en) * | 2015-12-23 | 2016-04-06 | 中广核研究院有限公司 | Fuel assembly and fuel rod capable of improving reactor security of fuel assembly |
| CN207690513U (en) * | 2017-12-19 | 2018-08-03 | 中国原子能科学研究院 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
-
2017
- 2017-12-19 CN CN201711369488.5A patent/CN109935366A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1531996A (en) * | 1966-07-21 | 1968-07-05 | Atomic Energy Authority Uk | Spacer grid for a fuel assembly for a nuclear reactor |
| JPS60152984A (en) * | 1984-01-23 | 1985-08-12 | 株式会社東芝 | Fuel spacer |
| CN85109766A (en) * | 1984-12-06 | 1986-07-09 | 法玛汤姆和柯吉玛公司 | Fuel assembly for nuclear reactors |
| CN1035384A (en) * | 1987-11-24 | 1989-09-06 | 西门子公司 | Debris resistant fuel assembly |
| CN103971759A (en) * | 2014-05-28 | 2014-08-06 | 中科华核电技术研究院有限公司 | Locating grid |
| CN104021821A (en) * | 2014-06-20 | 2014-09-03 | 中科华核电技术研究院有限公司 | Holding grille and fuel assembly with same |
| CN105469838A (en) * | 2015-12-23 | 2016-04-06 | 中广核研究院有限公司 | Fuel assembly and fuel rod capable of improving reactor security of fuel assembly |
| CN207690513U (en) * | 2017-12-19 | 2018-08-03 | 中国原子能科学研究院 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
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