CN206271424U - The base of fuel assembly and fuel assembly - Google Patents
The base of fuel assembly and fuel assembly Download PDFInfo
- Publication number
- CN206271424U CN206271424U CN201621301952.8U CN201621301952U CN206271424U CN 206271424 U CN206271424 U CN 206271424U CN 201621301952 U CN201621301952 U CN 201621301952U CN 206271424 U CN206271424 U CN 206271424U
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- China
- Prior art keywords
- orifice plate
- arcuate ribs
- base
- arch
- fuel assembly
- Prior art date
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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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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model is related to the base of a kind of fuel assembly and fuel assembly, and base is including being distributed with the orifice plate of through hole and being arranged on the supporting mechanism of orifice plate side；Supporting mechanism includes at least one arcuate ribs being arranged on orifice plate；Arcuate ribs are provided with arch opening away from the side of orifice plate, and the opening direction of arch opening is directed away from the side of orifice plate.Arch bridge type arcuate ribs are prevented effectively from stress concentration degree between orifice plate and supporting leg, allow the continuously distributed more uniform, intensity so as to improve bottom nozzle of stress of bottom nozzle；In addition, cooling agent is from lower end to upstream, for the arcuate ribs of comparable size thickness, the fluoran stream surface product of arch bridge type arcuate ribs gradually changes axially upward, reduces flow resistance violent change, improvement flow field when cooling agent flows；For the bottom nozzle of integration processing, the blank of removal is reduced, improve the utilization rate of material.
Description
Technical field
The utility model is related to Nuclear Plant, more specifically to a kind of fuel assembly and fuel assembly
Base.
Background technology
Fuel assembly structure of the prior art is made up of rigid backbone and fuel rod, as shown in figure 1, fuel rod is in rigidity
It is arranged in parallel and by even partition in skeleton.Rigid backbone includes mixing grillwork 4, upper base 5, bottom nozzle 6 and guide pipe 7.Stir
Mixed screen work 4, is made up of regularly arranged for accommodating and clamping the lattice cell of fuel rod.Grid spacer 10 and mixing grillwork 4 are in combustion
The axially spaced-apart of charge bar is set, and positioning is worn for fuel rod.Guide pipe 7 is more long than fuel rod, and it stretches out from the end of fuel bundle
Come, and be fixed on base 5 and bottom nozzle 6.Bottom nozzle 6 is located at the bottom of fuel assembly, with some supporting legs and one
Orifice plate 61, has some to penetrate the orifice plate 61 for the duct of fixed guide pipe 7 and coolant flow passages on orifice plate 61.Fuel assembly
The upper base 5 of the other end, i.e. component upper end, including an orifice plate for transverse direction, have some to accommodate and fixed guide pipe 7 on orifice plate
The orifice plate is run through in duct and discharge orifice.
Generally, as shown in figure 13, bottom nozzle is by a square orifice plate 61 and the band cross beam type immediately below its four angles
Four support columns 625 connection composition of floor 624 is supported, the structure can allow and flow to fuel stack by the hole on orifice plate 61 for cooling agent
The cavity of part.Two support columns 625 on a pair of the linea angulatas of bottom nozzle 6 have dowel hole, for lower core plate on alignment pin
Assembling, to ensure fuel assembly being accurately positioned in reactor core.
Because support floor 624 is strip platy structure, numerical analysis is carried out using finite element method, in bottom nozzle 6
There is section change drastically between orifice plate 61 and support floor 624, as shown in figure 14, beam type down tube holder structure exists in right angle
Obvious stress concentration, result in the high stress for generating abrupt local in this place, and its peak stress is much larger than component entirety
Mean stress.Due to the stress concentration at this, the intensity of component bottom nozzle 6 will be weakened, reduce the bearing capacity of bottom nozzle 6.
Certain moon in 2004, the water pipe of No. 3 reactors of connection bursts suddenly in building where Japanese certain nuclear power station turbine, although the accident is simultaneously
Nuclear leakage is not resulted in, but steam explosion causes 5 workman's death, dozens injured.Cause of accident is steam generator inner tubule
Stress concentration result in pipeline crack, metal fatigue causes Crack Extension.Therefore, stress concentration has serious danger to component
Evil, it is necessary to which the bottom nozzle 6 to there is stress concentration potential hazard optimizes design, is cut with overcoming or reducing stress concentration
The influence of weak structure intensity.
In addition, present down tube holder structure can cause the cooling agent axial velocity that core plate flows out uneven, in existing skill
The beam type floor that art is used forms a big opening.Although the structure is favourable to pressure drop, it is unfavorable for even flow field, will causes
The inhomogeneities that cooling agent before the orifice plate 61 of bottom nozzle 6 is present.
Further, with reference to shown in Figure 15, Figure 16, because the cross beam type support changes of section of floor 624 is in sustained height, when
When cooling agent washes away floor section, in the mutation of soffit of girder position, the mutation for meeting flow section will cause crossing current violent change.
Utility model content
The technical problems to be solved in the utility model is, there is provided the pipe of a kind of improved fuel assembly and fuel assembly
Seat.
The utility model solves the technical scheme that its technical problem used：A kind of base of fuel assembly is constructed, its
It is characterised by, including the orifice plate of through hole is distributed with and the supporting mechanism of the orifice plate side is arranged on；The supporting mechanism includes
It is arranged at least one arcuate ribs on the orifice plate；The arcuate ribs are provided with arch and open away from the side of the orifice plate
Mouthful, and the opening direction of the arch opening is directed away from the side of the orifice plate.
Preferably, the arcuate ribs are arranged between the outside of the orifice plate different directions.
Preferably, the arcuate ribs include the arcuate ribs for being set with second direction in the first direction respectively.
Preferably, the arcuate ribs of the arcuate ribs of the first direction and the second direction are arranged in a crossed manner.
Preferably, the first direction includes at least two arcuate ribs being arranged side by side, and the second direction is included simultaneously
At least two arcuate ribs for setting are arranged, each arcuate ribs form the dome structure of setting of being arched upward to the orifice plate side.
Preferably, the supporting mechanism also includes the supporting leg being supported to the orifice plate；
The arcuate ribs include along the edge of the orifice plate be arranged on the circumferentially upper adjacent supporting leg of the orifice plate it
Between arcuate ribs；And/or,
The arcuate ribs include be arranged on the orifice plate circumferentially go up supporting leg described in non-conterminous two between arcuate ribs.
Preferably, the arcuate ribs are platy structure, side corresponding with the orifice plate, supporting leg respectively with the hole
Plate, supporting leg connection.
Preferably, the arcuate ribs being arranged between supporting leg described in two are structure as a whole with the supporting leg.
Preferably, the supporting mechanism is structure as a whole with the orifice plate；Or, the supporting mechanism is welded with the orifice plate
Form integrative-structure.
Preferably, the bottom of supporting leg described at least two is provided with lockhole.
Preferably, in being arranged between supporting leg described in the arcuate ribs relatively corresponding two between supporting leg described in two
Line is symmetrical.
Preferably, the orifice plate is square, and the supporting leg includes four, respectively positioned at the corner of the orifice plate；Or, described
Orifice plate be in polygon, the supporting leg include it is corresponding a plurality of with the side number of the orifice plate, and respectively positioned at the orifice plate corner.
Preferably, if the arcuate profile of the arch opening is in turn connected to form by main section along arch direction.
Preferably, the arcuate profile of the arch opening includes being located at the segmental arc at two ends and is connected to the described of two ends
Flat segments between segmental arc.
Preferably, the flat segments are parallel with the orifice plate.
Preferably, the arcuate profile of the arch opening is circular arc or arc.
Preferably, the cross-section facial contour of the arch opening is arc.
Preferably, the arch opening with the two opposite sides corresponding two edges of difference of the arcuate ribs, at least
Edge is provided with chamfering structure described in one.
The utility model also constructs a kind of fuel assembly, including described base.
Implement the base of fuel assembly of the present utility model and fuel assembly, have the advantages that：The utility model
Bottom nozzle can be prevented effectively from stress concentration degree between orifice plate and supporting leg by arch bridge type arcuate ribs, allow the stress of bottom nozzle
The continuously distributed more uniform, intensity so as to improve bottom nozzle；In addition, cooling agent is from lower end to upstream, for comparable size
The arcuate ribs of thickness, the fluoran stream surface product of arch bridge type arcuate ribs is gradually changed, reduced when cooling agent flows axially upward
Flow resistance violent change, improvement flow field；In addition, for the bottom nozzle of integration processing, reducing the blank of removal, the utilization of material is improved
Rate.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the structural representation of the fuel assembly in the utility model embodiment；
Fig. 2 is the dimensional structure diagram of the bottom nozzle of the fuel assembly in the utility model embodiment；
Fig. 3 is the schematic perspective view of another angle of bottom nozzle in Fig. 2；
Fig. 4 is that the arch opening of arcuate ribs is structural representation when multistage line segment is sequentially connected；
Fig. 5 be the arch opening of arcuate ribs two ends be arc when structural representation；
Fig. 6 be arcuate ribs arch opening be arc when structural representation；
Fig. 7 be arcuate ribs in Fig. 6 arch opening cross section be arc when A-A to structural representation；
Fig. 8 be arcuate ribs in Fig. 6 arch opening cross section carry fillet chamfering structure when A-A to structural representation
Figure；
Fig. 9 be arcuate ribs in Fig. 6 arch opening cross section carry oblique angle chamfering structure when A-A to structural representation
Figure；
Figure 10 is stress isobar distribution when bottom nozzle in Fig. 2 carries out simulation analysis using finite element method；
Figure 11 is the schematic cross-sectional view of the bottom nozzle with arch bridge type arcuate ribs in the utility model embodiment；
Figure 12 is the variation relation curve map between the fluoran stream surface and axial location of the bottom nozzle in Figure 11；
Figure 13 is the dimensional structure diagram of the bottom nozzle in background technology；
Figure 14 is stress isobar distribution when bottom nozzle in Figure 13 carries out simulation analysis using finite element method；
Figure 15 is the schematic cross-sectional view of the bottom nozzle in background technology；
Figure 16 is the variation relation curve map between the fluoran stream surface and axial location of the bottom nozzle in Figure 15.
Specific embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate specific embodiment of the present utility model.
As shown in figure 1, the fuel assembly in one preferred embodiment of the utility model is made up of rigid backbone and fuel rod,
Fuel rod is arranged in parallel in rigid backbone and by even partition.Rigid backbone includes mixing grillwork 4, upper base 5, bottom nozzle 6
With guide pipe 7.Mixing grillwork 4, is made up of regularly arranged for accommodating and clamping the lattice cell of fuel rod.Grid spacer 10 and stir
Mixed screen work 4 is set in the axially spaced-apart of fuel rod, and positioning is worn for fuel rod.Guide pipe 7 is more long than fuel rod, and it is from fuel bundle
End stretch, and be fixed on base 5 and bottom nozzle 6.Upper base 5 is arranged on the upper end of fuel assembly, including one
Horizontal up-hole plate, has some to accommodate and runs through the up-hole plate with the duct and discharge orifice of fixed guide pipe 7 on up-hole plate.Further
Ground, it is the bottom nozzle 6 of fuel assembly that the base of fuel assembly of the present utility model is corresponding.
As shown in Figure 2 and Figure 3, bottom nozzle 6 is located at the bottom of fuel assembly, including orifice plate 61 and is arranged on the downside of orifice plate 61
Supporting mechanism 62, supporting mechanism 62 include four supporting legs 621 being supported to orifice plate 61.Corresponding, orifice plate 61 is square,
Four supporting legs 621 are respectively positioned at the corner of orifice plate 61.In other embodiments, orifice plate 61 or other polygonal shapes, branch
The quantity of leg 621 is alternatively three or more than three other quantities, can guarantee that the balanced support to orifice plate 61, preferably
Ground, supporting leg 621 include it is corresponding a plurality of with the side number of orifice plate 61, and respectively positioned at orifice plate 61 corner.
The bottom of two diagonal supporting legs 621 is provided with lockhole 622, for being assembled with the alignment pin in lower core plate, with true
Protect fuel assembly being accurately positioned in reactor core.In other embodiments, also lockhole can be set on the supporting leg 621 of other positions
622, or lockhole 622 is set on multiple supporting legs 621.
Through hole 611 is distributed with orifice plate 61, through hole 611 is included for the duct of fixed guide pipe 7 and for being passed through with cooling agent
The coolant flow passages that orifice plate 61 flows through.Supporting leg 621 is located at the outer ring in the region of through hole 611, and supporting mechanism 62 is also logical including being arranged on
Arcuate ribs 623 in the circumference in the region of hole 611 between the adjacent supporting leg 621 of two-phase, side of the arcuate ribs 623 away from orifice plate 61
It is provided with arch opening 6231, and the opening direction of arch opening 6231 is directed away from the side of orifice plate 61.
Arch bridge type arcuate ribs 623 can be prevented effectively from stress concentration degree between orifice plate 61 and supporting leg 621, allow bottom nozzle 6
The continuously distributed more uniform, intensity so as to improve bottom nozzle 6 of stress.In addition, cooling agent is from lower end to upstream, for equal
The arcuate ribs 623 of dimensional thickness, the fluoran stream surface product of arch bridge type arcuate ribs 623 is gradually changed, reduces cooling axially upward
Flow resistance violent change, improvement flow field when agent is flowed.Simultaneously for the bottom nozzle of integration processing, the blank of removal is reduced, improved
The utilization rate of material.
In certain embodiments, arch is equipped between the adjacent supporting leg 621 of any two-phase in the circumference in the region of through hole 611
Floor 623, allows the intensity of border of orifice plate 61 to get a promotion, and increases balance, while reducing flow resistance when cooling agent flows
Violent change, improves flow field.Preferably, it is arranged between relatively corresponding two supporting leg 621 of the arcuate ribs 623 between two supporting legs 621
Center line it is symmetrical, allow and stress and reduce flow resistance violent change when cooling agent flows, improve flow field.
In other embodiments, arcuate ribs include being arranged on supporting leg 621 described in orifice plate 61 circumferential non-conterminous two it
Between arcuate ribs 623, allow arcuate ribs to be connected between two supporting legs by the side of orifice plate.
Further, each supporting leg 621 and arcuate ribs 623 are symmetrical arranged with respect to orifice plate 61, also can be with respect to the center of orifice plate 61
It is symmetrical arranged, it is ensured that make the stress of bottom nozzle 6 more balanced.
Preferably, arcuate ribs 623 are set along the outer ring in the region of through hole 611, it is to avoid installation and cooling agent to guide pipe 7
Circulation impact.In other embodiments, arcuate ribs 623 can also overlap with through hole 611 in the axial direction, not shadow
Ring the installation of guide pipe 7 and the circulation of cooling agent.
In certain embodiments, supporting leg 621 is structure as a whole with arcuate ribs 623, increases bonding strength.Further,
Supporting mechanism 62 is also structure as a whole with orifice plate 61, can increase bonding strength.In other embodiments, supporting leg 621 and arched rib
Plate 623 is alternatively and is welded to connect, and supporting mechanism 62 forms integrative-structure with orifice plate 61 or welding.
In certain embodiments, arcuate ribs 623 be platy structure, with orifice plate 61, the corresponding side of supporting leg 621 respectively with
Orifice plate 61, supporting leg 621 are connected, and binding site is seamless, it is to avoid the flowing on cooling agent produces influence.In other embodiments,
Arcuate ribs 623 or arch support bar structure or arch support structure.
Further, in certain embodiments, if as shown in figure 4, the arcuate profile of arch opening 6231 is by main section edge
Arch direction is in turn connected to form.In other embodiments, as shown in figure 5, the arcuate profile of arch opening 6231 is alternatively it
His shape, including segmental arc 6232 positioned at two ends and the flat segments 6233 that are connected between the segmental arc 6232 at two ends, it is excellent
Selection of land, flat segments 6233 are parallel with orifice plate 61, and the structure can reduce arcuate ribs 623 when the length of arcuate ribs 623 is more long
Height.Certainly, as shown in fig. 6, the arcuate profile of arch opening 6231 is circular arc or arc.
In certain embodiments, as shown in fig. 7, the cross-section facial contour of arch opening 6231 is arc, the stream of cooling agent is made
It is logical more smooth, reduce the impulse force to arcuate ribs 623.In other embodiments, as shown in Figure 8, Figure 9, arch opening 6231
In the inside and outside two opposite sides corresponding two edges of difference of arcuate ribs 623, two edges are provided with chamfering structure, and chamfering structure can
It is fillet or oblique angle.Certainly, also only can set on the corresponding edge in inside and outside two opposite sides wherein side of arcuate ribs 623
Corner structure.
Force analysis with arch bridge type arcuate ribs 623 of the present utility model belongs to plane stress problem, can use limited
First method carries out numerical analysis.To the utility model example, in the case of identical span, uniform load and boundary condition, adopt
The girder structure of the bottom nozzle in arch bridge type arcuate ribs 623 and background technology is compared with secondary quadrilateral units
Compared with Figure 10 is distributed for the stress isobar of arch bridge type arcuate ribs 623, from fig. 4, it can be seen that the stress of arch bridge type arcuate ribs 623 point
Cloth is more uniform, structural strength of the structural strength better than background technology bottom nozzle.
Can be obtained by comparative analysis, compared to the bottom nozzle of straight beam floor in background technology, with arch bridge type arcuate ribs
623 bottom nozzle 61 avoids the stress concentration of the abrupt change of cross-section so that the stress distribution of bottom nozzle is more uniform.
Further, the bottom nozzle 61 with arch bridge type arcuate ribs 623 of the present utility model can play balanced flow field
Effect, compared to the bottom nozzle of straight beam floor in background technology, as shown in figure 11, the utility model example arcuate ribs 623
Meet flow section to change vertically is to seamlessly transit, corresponding, with reference to the pass between the fluoran stream surface product and axial location in Figure 12
It is variation diagram, the utility model example arcuate ribs 623 can play a part of balanced flow field.
In other embodiments, supporting mechanism 62 also can be to an arcuate ribs 623 for including being arranged on orifice plate 61, arch
The ornaments direction of shape floor 623 does not limit, and can be the edge for being arranged on orifice plate 61, connects on the side that may also be arranged on orifice plate 61
It is connected between any both sides.Corresponding, arcuate ribs 623 are provided with arch opening 6231 away from the side of the orifice plate 61, and
The opening direction of the arch opening 6231 is directed away from the side of the orifice plate 61, allows arcuate ribs 623 by from arch
When the cooling agent of the opening side of shape opening 6231 impacts, the intensity of orifice plate 61 is lifted, increase balance, while reducing cooling agent
Flow resistance violent change during flowing, improves flow field.
When arcuate ribs 623 include multiple, arcuate ribs 623 may also be arranged on the different directions of orifice plate 61 outside it
Between, allow arcuate ribs to be connected between the edge of diverse location by the side of orifice plate 61.The ornaments direction of multiple arcuate ribs 623
Can be with identical, also can be different, also can be arranged in a crossed manner.
In certain embodiments, arcuate ribs include the arcuate ribs 623 for being set with second direction in the first direction respectively,
The quantity of the arcuate ribs 623 in each direction can not be limited.The arcuate ribs 623 of first direction and the arch of the second direction
Shape floor 623 is arranged in a crossed manner, and the arcuate ribs 623 of both direction can intersect in the region of orifice plate 61, and crosspoint also may be used
At the edge of orifice plate 61, or on the outside extended line direction of arcuate ribs 623.
Further, first direction includes the two or more arcuate ribs 623 being arranged side by side, and the second direction includes
The two or more arcuate ribs 623 being arranged side by side, each arcuate ribs 623 are formed and arched upward setting to the side of the orifice plate 61
Dome structure.Dome structure forms latticed structure, can increase the intensity of orifice plate 61, also can be opposite with orifice plate 61
The whole region of side reduces flow resistance violent change when cooling agent flows, and improves flow field.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (19)
1. a kind of base of fuel assembly, it is characterised in that including through hole is distributed with（611）Orifice plate（61）It is described with being arranged on
Orifice plate（61）The supporting mechanism of side（62）；The supporting mechanism（62）Including being arranged on the orifice plate（61）On at least one
Arcuate ribs；The arcuate ribs are away from the orifice plate（61）Side be provided with arch opening（6231）, and the arch opens
Mouthful（6231）Opening direction be directed away from the orifice plate（61）Side.
2. the base of fuel assembly according to claim 1, it is characterised in that the arcuate ribs are arranged on the orifice plate
（61）Between the outside of different directions.
3. the base of fuel assembly according to claim 2, it is characterised in that the arcuate ribs are included respectively along first
The arcuate ribs that direction and second direction are set（623）.
4. the base of fuel assembly according to claim 3, it is characterised in that the arcuate ribs of the first direction
（623）With the arcuate ribs of the second direction（623）It is arranged in a crossed manner.
5. the base of fuel assembly according to claim 4, it is characterised in that the first direction includes what is be arranged side by side
At least two arcuate ribs（623）, the second direction includes at least two arcuate ribs that are arranged side by side（623）, it is each described
Arcuate ribs（623）Formed to the orifice plate（61）Arch upward the dome structure of setting for side.
6. the base of the fuel assembly according to any one of claim 1 to 5, it is characterised in that the supporting mechanism（62）
Also include to the orifice plate（61）The supporting leg being supported（621）；
The arcuate ribs are included along the orifice plate（61）Edge be arranged on the orifice plate（61）The adjacent branch in circumference
Leg（621）Between arcuate ribs（623）；And/or,
The arcuate ribs include being arranged on the orifice plate（61）Supporting leg described in non-conterminous two in circumference（621）Between arch
Floor（623）.
7. the base of fuel assembly according to claim 6, it is characterised in that the arcuate ribs（623）It is tabular knot
Structure, with the orifice plate（61）, supporting leg（621）Corresponding side respectively with the orifice plate（61）, supporting leg（621）Connection.
8. the base of fuel assembly according to claim 6, it is characterised in that be arranged on supporting leg described in two（621）Between
The arcuate ribs（623）With the supporting leg（621）It is structure as a whole.
9. the base of fuel assembly according to claim 6, it is characterised in that the supporting mechanism（62）With the orifice plate
（61）It is structure as a whole；Or, the supporting mechanism（62）With the orifice plate（61）Welding forms integrative-structure.
10. the base of fuel assembly according to claim 6, it is characterised in that supporting leg described at least two（621）Bottom
Portion is provided with lockhole（622）.
The base of 11. fuel assemblies according to claim 6, it is characterised in that be arranged on supporting leg described in two（621）Between
The arcuate ribs（623）Supporting leg described in relatively corresponding two（621）Between center line it is symmetrical.
The base of 12. fuel assemblies according to claim 6, it is characterised in that the orifice plate（61）It is square, the branch
Leg（621）Including four, respectively positioned at the orifice plate（61）Corner；Or, the orifice plate（61）In polygon, the supporting leg
（621）Including with the orifice plate（61）Side number it is corresponding a plurality of, and respectively be located at the orifice plate（61）Corner.
The base of 13. fuel assemblies according to claim 6, it is characterised in that the arch opening（6231）Arch
If profile is in turn connected to form by main section along arch direction.
The base of 14. fuel assemblies according to claim 6, it is characterised in that the arch opening（6231）Arch
Profile includes the segmental arc positioned at two ends（6232）And it is connected to the segmental arc at two ends（6232）Between flat segments
（6233）.
The base of 15. fuel assemblies according to claim 14, it is characterised in that the flat segments（6233）With the hole
Plate（61）It is parallel.
The base of 16. fuel assemblies according to claim 6, it is characterised in that the arch opening（6231）Arch
Profile is circular arc or arc.
The base of 17. fuel assemblies according to claim 6, it is characterised in that the arch opening（6231）It is cross-section
Facial contour is arc.
The base of 18. fuel assemblies according to claim 6, it is characterised in that the arch opening（6231）With it is described
Arcuate ribs（623）Two opposite sides distinguish corresponding two edges, at least edge is provided with chamfering structure described in one.
19. a kind of fuel assemblies, it is characterised in that including the base described in any one of claim 1 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301952.8U CN206271424U (en) | 2016-11-30 | 2016-11-30 | The base of fuel assembly and fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301952.8U CN206271424U (en) | 2016-11-30 | 2016-11-30 | The base of fuel assembly and fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206271424U true CN206271424U (en) | 2017-06-20 |
Family
ID=59043305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621301952.8U Active CN206271424U (en) | 2016-11-30 | 2016-11-30 | The base of fuel assembly and fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206271424U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504799A (en) * | 2016-11-30 | 2017-03-15 | 中广核研究院有限公司 | Fuel assembly and the base of fuel assembly |
| WO2018098703A1 (en) * | 2016-11-30 | 2018-06-07 | 中广核研究院有限公司 | Fuel assembly and tube base thereof |
| CN114242271A (en) * | 2021-11-05 | 2022-03-25 | 岭澳核电有限公司 | Fuel assembly and framework thereof |
-
2016
- 2016-11-30 CN CN201621301952.8U patent/CN206271424U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504799A (en) * | 2016-11-30 | 2017-03-15 | 中广核研究院有限公司 | Fuel assembly and the base of fuel assembly |
| CN106504799B (en) * | 2016-11-30 | 2018-04-17 | 中广核研究院有限公司 | The tube socket of fuel assembly and fuel assembly |
| WO2018098703A1 (en) * | 2016-11-30 | 2018-06-07 | 中广核研究院有限公司 | Fuel assembly and tube base thereof |
| CN114242271A (en) * | 2021-11-05 | 2022-03-25 | 岭澳核电有限公司 | Fuel assembly and framework thereof |
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