CN207690513U - 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
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- CN207690513U CN207690513U CN201721784640.1U CN201721784640U CN207690513U CN 207690513 U CN207690513 U CN 207690513U CN 201721784640 U CN201721784640 U CN 201721784640U CN 207690513 U CN207690513 U CN 207690513U
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- fried dough
- dough twist
- profile bar
- grid
- spacer
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- 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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Abstract
The utility model 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, the outer plugged and fixed of adjacent docking arc structure；Each of described 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 structures 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 with fuel rod formation line by four convex globoidals and fuel rod is laterally clamped.The utility model is formed by n × n fried dough twist profile bar band grafting, has compared original strip-type grid spacer, the utility model does not have outer band, and inside and outside band is consistent.The utility model is simple in structure, when manufacture it is required number of molds it is few, convenient for manufacture, while fluid resistance is small.
Description
Technical field
The utility model is related to fuel assembly technical fields, and in particular to a kind of fuel assembly positioning with fried dough twist profile bar band
Screen work.
Background technology
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 optimizing fuel element design, using
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 be clamped 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 of the spring of fuel rod, which is clamped, to be strongly reduced, 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 can lead to the risk of fuel rod breakage.
To optimize the parameter of fuel element, and use general fuel assembly form construction design so that novel component
It can be suitable for current ripe reactor core.Novel annular fuel element, outer diameter is such as used to become larger, 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 makes fuel element fall probability on bottom nozzle at runtime and increase, 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 determination, 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, there is an urgent need for designing a kind of novel spacer grid of fuel assembly, with overcome the deficiencies in the prior art.
Invention content
The purpose of this utility model is to provide a kind of band fried dough twist profile bars for the annular fuel element can adapt to big outer diameter
The spacer grid of fuel assembly of band.
Realize that the technical solution of the utility model aim is as follows：A kind of spacer grid of fuel assembly with fried dough twist profile bar band,
The grid spacer includes multiple fried dough twist profile bar bands；Each fried dough twist profile bar band includes n docking arc structure, adjacent docking arc
The outer plugged and fixed of structure；Each of described docking arc structure is docked by the identical convex globoidal of two sections of radians and is formed；Described
Multiple fried dough twist profile bar bands intersect the grid spacer to be formed in the latticed cell structures of n × n, the intersection of multiple fried dough twist profile bar bands
Position is the outer for docking arc structure；Four walls inside the latticed grid of the grid spacer are convex globoidal structures, pass through four
A convex globoidal contacts with fuel rod formation line and fuel rod is laterally clamped.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, described in adjacent docking arc structure outer
Plugged and fixed is slot of the outer with grafting for docking arc structure, passes through slot plugged and fixed.
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 carries the upper slot from top to middle part, another docking arc structure is carried 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, the wherein value range of n are 2~18.
Spacer grid of fuel assembly as described above with fried dough twist profile bar band, described in each of 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 is in the grid spacer in the latticed cell structures of n × n, 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 described in the utility model, the annular fuel component include upper tube socket, bottom nozzle, annular
Fuel rod, grid spacer and guide pipe, it is characterised in that：The grid spacer is using any of the above-described with fried dough twist profile bar band
Spacer grid of fuel assembly.
A kind of reactor described in the utility model, uses annular fuel component, which includes upper tube
Seat, bottom nozzle, annular fuel rod, grid spacer and guide pipe；Grid spacer described in it uses any of the above-described band fried dough twist type
The spacer grid of fuel assembly of band.
The remarkable result of the utility model is：
Spacer grid of fuel assembly described in the utility model with fried dough twist profile bar band, by 2 × 2 to 18 × 18 fried dough twist types
Band grafting forms, and has compared original strip-type grid spacer, the utility model does not have outer band, and inside and outside band is consistent.
Therefore the utility model is simple in structure, when manufacture it is required number of molds it is few, convenient for manufacture, while fluid resistance is small, has bright
Aobvious 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 support element is not needed, and is contacted with fuel rod formation line by four convex globoidal structures and fuel is laterally clamped
Stick.
Common rodlike combustion can also be applied in spacer grid of fuel assembly described in the utility model with fried dough twist profile bar band
Expect element, and coolant can be made more fully to be contacted with fuel element.
Spacer grid of fuel assembly described in the utility model with fried dough twist profile bar band is used for annular fuel component, Neng Goushi
For the fuel element of bigger outer diameter, provides located lateral to fuel element and generate certain effect of mixing to coolant.
Description of the drawings
Fig. 1 is a kind of spacer grid of fuel assembly structural schematic diagram with fried dough twist profile bar band described in the utility model；
Fig. 2 is the vertical 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 with the fried dough twist profile bar band for being oriented to tube passage.
In figure：1. fried dough twist profile bar band；2. docking arc structure；3. convex globoidal；4. outer；Slot on 5.；6. lower slot；7. leading
To tube passage.
Specific implementation mode
With reference to the accompanying drawings and detailed description to a kind of fuel stack with fried dough twist profile bar band described in the utility model
Part grid spacer 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 described in the utility model, should
Grid spacer 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 of described 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 fuel rod is laterally clamped.
As shown in Figures 3 to 5,4 plugged and fixed of outer of the adjacent docking arc structure is the outer of docking arc structure 2
Along the slot with grafting, pass through slot plugged and fixed.The adjacent docking arc structure 2, one of docking arc structure 2
Outer carries 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 of described docking arc structure 2 is docked by the identical convex globoidal of two sections of radians and is 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 described in the present embodiment, the grid spacer
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 and is oriented to 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 for being oriented to tube passage 7 and the guiding tube passage of 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 use the fuel of the either strap fried dough twist profile bar band described in above-described embodiment 1 or embodiment 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 is using the either strap fried dough twist described in embodiment 1 or embodiment 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) plugged and fixed；Each of described 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 structures 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 with fuel rod formation line by four convex globoidals (3) and fuel rod is laterally clamped.
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
Outer (4) plugged and fixed for docking arc structure 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
Arc structure (2) is docked, the outer of one of docking arc structure (2) carries 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：It is 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 structures 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 tube passage (7) and the guiding tube passage of 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 the 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 in that：The grid spacer is using the either strap fiber crops 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 |
|---|---|---|---|
| CN201721784640.1U CN207690513U (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 |
|---|---|---|---|
| CN201721784640.1U CN207690513U (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 |
|---|---|
| CN207690513U true CN207690513U (en) | 2018-08-03 |
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ID=62994437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721784640.1U Active CN207690513U (en) | 2017-12-19 | 2017-12-19 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
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| Country | Link |
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| CN (1) | CN207690513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935366A (en) * | 2017-12-19 | 2019-06-25 | 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 CN201721784640.1U patent/CN207690513U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935366A (en) * | 2017-12-19 | 2019-06-25 | 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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