CN106504799B - The tube socket of fuel assembly and fuel assembly - Google Patents
The tube socket of fuel assembly and fuel assembly Download PDFInfo
- Publication number
- CN106504799B CN106504799B CN201611084087.0A CN201611084087A CN106504799B CN 106504799 B CN106504799 B CN 106504799B CN 201611084087 A CN201611084087 A CN 201611084087A CN 106504799 B CN106504799 B CN 106504799B
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- Prior art keywords
- orifice plate
- arcuate ribs
- fuel assembly
- tube socket
- arch
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Classifications
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- 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
- G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
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- 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
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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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Pipe Accessories (AREA)
Abstract
The present invention relates to a kind of fuel assembly and the tube socket of fuel assembly, tube socket includes the orifice plate of through hole is distributed with and is arranged on the supporting mechanism of orifice plate side；Supporting mechanism includes at least one arcuate ribs being arranged on orifice plate；Side of the arcuate ribs away from orifice plate is provided with arch opening, and the opening direction of arch opening is directed away from the side of orifice plate.Arch bridge type arcuate ribs effectively avoid stress concentration degree between orifice plate and supporting leg, allow the stress of bottom nozzle it is continuously distributed more uniformly, so as to improving the intensity 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 products of arch bridge type arcuate ribs gradually changes axially upward, flow resistance violent change when reducing cooling agent flowing, improvement flow field；The bottom nozzle processed for integration, reduces the blank of removal, improves the utilization rate of material.
Description
Technical field
The present invention relates to Nuclear Plant, more specifically to a kind of fuel assembly and the tube socket of fuel assembly.
Background technology
Fuel assembly structure of the prior art is made 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 tube socket 5, bottom nozzle 6 and guide pipe 7.Stir
Mixed screen work 4, is made of the regularly arranged lattice cell for being used to accommodate and clamp fuel rod.Grid spacer 10 and mixing grillwork 4 are firing
The axially spaced-apart of charge bar is set, and positioning is worn for fuel rod.Guide pipe 7 is longer than fuel rod, it is stretched out from the end of fuel bundle
Come, and be fixed on tube socket 5 and bottom nozzle 6.Bottom nozzle 6 is located at the lower part of fuel assembly, has some support legs and one
Orifice plate 61, there is that some are used for the duct of fixed guide pipe 7 and coolant flow passages penetrate the orifice plate 61 on orifice plate 61.Fuel assembly
The upper tube socket 5 of the other end, i.e. component upper end, includes the orifice plate of a transverse direction, has some to accommodate and fixed guide pipe 7 on orifice plate
The orifice plate is run through in duct and discharge orifice.
In general, 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, which can allow flows to fuel stack for cooling agent by the hole on orifice plate 61
The cavity of part.Two support columns 625 on a pair of of the linea angulata of bottom nozzle 6 have dowel hole, for the positioning pin in lower core plate
Assembling, to ensure accurate positionin of the fuel assembly in reactor core.
Since support floor 624 is long strip shape structure, numerical analysis is carried out using finite element method, in bottom nozzle 6
Change between orifice plate 61 and support floor 624 there are section drastically, as shown in figure 14, beam type down tube holder structure exists in right angle
Obvious stress concentration, result in the high stress that abrupt local is generated at this, 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 certain Japanese nuclear power station turbine, although the accident is simultaneously
Nuclear leakage is not resulted in, but steam explosion causes 5 worker's death, dozens injured.Cause of accident is steam generator inner tubule
Stress concentration result in pipeline crack, metal fatigue causes crack propagation.Therefore, stress concentration has component serious danger
Evil, it is necessary to optimize to the bottom nozzle 6 there are stress concentration potential hazard, cut with overcoming or reducing stress concentration
The influence of weak structure intensity.
In addition, the cooling agent axial velocity that present down tube holder structure can cause core plate to flow out is uneven, in existing skill
The beam type floor that art uses forms a big opening.Although the structure is favourable to pressure drop, it is unfavorable for even flow field, will causes
Inhomogeneities existing for cooling agent before 6 orifice plate 61 of bottom nozzle.
Further, with reference to shown in Figure 15, Figure 16, since cross beam type support 624 changes of section of floor is in sustained height, when
When cooling agent washes away floor section, it is mutated in soffit of girder position, crossing current violent change will be caused by meeting the mutation of flow section.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of tube socket of improved fuel assembly and fuel assembly.
The technical solution adopted by the present invention to solve the technical problems is：Construct a kind of tube socket of fuel assembly, its feature
It is, including the orifice plate of through hole is distributed with and is arranged on the supporting mechanism of the orifice plate side；The supporting mechanism includes setting
At least one arcuate ribs on the orifice plate；Side of the arcuate ribs away from the orifice plate is provided with arch opening,
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 set in the first direction with second 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 set are arranged, each arcuate ribs form the dome structure for setting of arching upward to the orifice plate side.
Preferably, the supporting mechanism further 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 the arcuate ribs being arranged between circumferentially upper non-conterminous two supporting leg of the orifice plate.
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 two supporting legs 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 at least two supporting legs is equipped with lockhole.
Preferably, between relatively corresponding two supporting leg of the arcuate ribs being arranged between two supporting legs
Line is symmetrical.
Preferably, the orifice plate is square, and the supporting leg includes four, respectively positioned at the corner of the orifice plate；It is or, described
Orifice plate is in polygon, and the supporting leg includes corner corresponding a plurality of with the side number of the orifice plate, and being located at the orifice plate respectively.
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 both ends and is connected to the described of both 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 arc-shaped or arc.
Preferably, the cross-section facial contour of the arch opening is arc.
Preferably, in arch opening two edges corresponding with the two opposite sides of the arcuate ribs, at least
One edge is provided with chamfering structure.
The present invention also constructs a kind of fuel assembly, including the tube socket.
Implement the fuel assembly of the present invention and the tube socket of fuel assembly, have the advantages that：The bottom nozzle of the present invention
Stress concentration degree between orifice plate and supporting leg is can effectively avoid by arch bridge type arcuate ribs, makes the stress of bottom nozzle continuously distributed
More uniformly, so as to improve the intensity of bottom nozzle；In addition, cooling agent is from lower end to upstream, for the arch of comparable size thickness
Shape floor, arch bridge type arcuate ribs fluoran stream surface product gradually change axially upward, reduces cooling agent flow when flow resistance violent change,
Improve flow field；In addition, for the bottom nozzle of integration processing, reduce the blank of removal, improve the utilization rate of material.
Brief description of the drawings
Below in conjunction with accompanying drawings and embodiments, the invention will be further described, in attached drawing：
Fig. 1 is the structure diagram of the fuel assembly in the embodiment of the present invention；
Fig. 2 is the dimensional structure diagram of the bottom nozzle of the fuel assembly in the embodiment of the present invention；
Fig. 3 is the schematic perspective view of another angle of bottom nozzle in Fig. 2；
Fig. 4 is the structure diagram when arch opening of arcuate ribs is sequentially connected for multistage line segment；
Fig. 5 is the structure diagram when both ends of the arch opening of arcuate ribs are arc；
Fig. 6 is the structure diagram when arch opening of arcuate ribs is arc；
Fig. 7 is A-A when the arch opening cross section of arcuate ribs in Fig. 6 is arc to structure diagram；
Fig. 8 is A-A when the arch opening cross section of arcuate ribs in Fig. 6 carries fillet chamfering structure to structural representation
Figure；
Fig. 9 is A-A when the arch opening cross section of arcuate ribs in Fig. 6 carries oblique angle chamfering structure to structural representation
Figure；
Figure 10 is that the stress isobar when bottom nozzle in Fig. 2 carries out simulation analysis using finite element method is distributed；
Figure 11 is the schematic cross-sectional view of the bottom nozzle with arch bridge type arcuate ribs in the embodiment of the present invention；
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 that the stress isobar when bottom nozzle in Figure 13 carries out simulation analysis using finite element method is distributed；
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.
Embodiment
In order to which the technical features, objects and effects of the present invention are more clearly understood, now compare attached drawing and describe in detail
The embodiment of the present invention.
As shown in Figure 1, the fuel assembly in a preferred embodiment of the invention is made 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 tube socket 5, bottom nozzle 6 and leads
To pipe 7.Mixing grillwork 4, is made of the regularly arranged lattice cell for being used to accommodate and clamp fuel rod.Grid spacer 10 and mix lattice
Frame 4 is set in the axially spaced-apart of fuel rod, and positioning is worn for fuel rod.Guide pipe 7 is longer than fuel rod, it is from the end of fuel bundle
Portion stretches, and is fixed on tube socket 5 and bottom nozzle 6.Upper tube socket 5 is arranged on the upper end of fuel assembly, including a transverse direction
Up-hole plate, have that some are accommodated and the up-hole plate is run through in the duct of fixed guide pipe 7 and discharge orifice on up-hole plate.Further,
The corresponding bottom nozzle 6 for fuel assembly of tube socket of the fuel assembly of the present invention.
As shown in Figure 2 and Figure 3, bottom nozzle 6 is located at the lower part of fuel assembly, including orifice plate 61 and is arranged on the downside of orifice plate 61
Supporting mechanism 62, supporting mechanism 62 includes four supporting legs 621 being supported to orifice plate 61.Corresponding, orifice plate 61 is square,
Four supporting legs 621 are located at the corner of orifice plate 61 respectively.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 corner corresponding a plurality of with the side number of orifice plate 61, and being located at orifice plate 61 respectively.
The bottom of two diagonal supporting legs 621 is equipped with lockhole 622, for being assembled with the positioning pin in lower core plate, with true
Protect accurate positionin of the fuel assembly 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 includes 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 611 region of through hole, supporting mechanism 62 further include be arranged on it is logical
Arcuate ribs 623 in the circumferential direction in 611 region of hole between the supporting leg 621 of two-phase neighbour, side of the arcuate ribs 623 away from orifice plate 61
Arch opening 6231 is provided with, 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 effectively avoid stress concentration degree between orifice plate 61 and supporting leg 621, allow bottom nozzle 6
Stress is continuously distributed more uniformly, so as to improving the intensity of bottom nozzle 6.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 gradually change, reduce cooling axially upward
Flow resistance violent change, improvement flow field when agent is flowed.Meanwhile for the bottom nozzle of integration processing, reduce the blank of removal, improve
The utilization rate of material.
In certain embodiments, in the circumferential direction in 611 region of through hole arch is equipped between the supporting leg 621 of any two-phase neighbour
Floor 623, allows the intensity of border of orifice plate 61 to get a promotion, and increases balance, while flow resistance when reducing cooling agent flowing
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 stress and reduce cooling agent flowing when flow resistance violent change, improve flow field.
In other embodiments, arcuate ribs include being arranged on circumferential non-conterminous two supporting leg 621 of orifice plate 61 it
Between arcuate ribs 623, allow arcuate ribs to be connected to by the side of orifice plate between two supporting legs.
Further, each supporting leg 621 and arcuate ribs 623 are symmetrical arranged with respect to orifice plate 61, also can be with respect to 61 center of orifice plate
It is symmetrical arranged, guarantee makes the stress of bottom nozzle 6 more balanced.
Preferably, arcuate ribs 623 are set along the outer ring in 611 region of through hole, avoid the installation to guide pipe 7 and cooling agent
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 are platy structure, with orifice plate 61,621 corresponding side of supporting leg respectively with
Orifice plate 61, supporting leg 621 connect, and binding site is seamless, avoid the flowing to cooling agent from having an impact.In other embodiments,
Arcuate ribs 623 or arch support rod 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 both ends and the flat segments 6233 that are connected between the segmental arc 6232 at both ends, it is excellent
Selection of land, flat segments 6233 are parallel with orifice plate 61, which can reduce arcuate ribs 623 when the length of arcuate ribs 623 is longer
Height.Certainly, as shown in fig. 6, the arcuate profile of arch opening 6231 is arc-shaped 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 two edges corresponding with the inside and outside two opposite sides of arcuate ribs 623, two edges are provided with chamfering structure, and chamfering structure can
For 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.
The force analysis category plane stress problem with arch bridge type arcuate ribs 623 of the present invention, can use finite element side
Method carries out numerical analysis.To present example, in the case of identical span, uniform load and boundary condition, employ secondary
Quadrilateral units compare the girder structure of the bottom nozzle in arch bridge type arcuate ribs 623 and background technology, Tu10Wei
The stress isobar distribution of arch bridge type arcuate ribs 623, from fig. 4, it can be seen that the stress distribution of arch bridge type arcuate ribs 623 is more equal
Even, structural strength is better than the structural strength of background technology bottom nozzle.
It 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 invention can play the role of balanced flow field,
Compared to the bottom nozzle of straight beam floor in background technology, as shown in figure 11, present example arcuate ribs 623 meet flow section edge
Change is to seamlessly transit in axial direction, corresponding, with reference to the relationship change figure between the fluoran stream surface product in Figure 12 and axial location, sheet
Invention example arcuate ribs 623 can play the role 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, may also be arranged on the side of orifice plate 61 and connects
It is connected between any both sides.Corresponding, side of the arcuate ribs 623 away from the orifice plate 61 is provided with arch opening 6231, and
The opening direction of the arch opening 6231 is directed away from the side of the orifice plate 61, allows arcuate ribs 623 being subject to from arch
During the cooling agent impact of the opening side of shape opening 6231, the intensity of orifice plate 61 is lifted, increases balance, while reduce cooling agent
Flow resistance violent change during flowing, improves flow field.
When arcuate ribs 623 include it is multiple when, arcuate ribs 623 may also be arranged on the different directions of orifice plate 61 outside it
Between, allow arcuate ribs to be connected to by the side of orifice plate 61 between the edge of diverse location.The ornaments direction of multiple arcuate ribs 623
Can be identical, also can be different, also can be arranged in a crossed manner.
In certain embodiments, arcuate ribs include the arcuate ribs 623 set in the first direction with second direction respectively,
The quantity of the arcuate ribs 623 in each direction can not limit.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 to arch upward setting to 61 side of orifice plate
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 during cooling agent flowing, improves flow field.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
The foregoing is merely the embodiment of the present invention, is not intended to limit the scope of the invention, every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made, is directly or indirectly used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (15)
1. a kind of tube socket of fuel assembly, it is characterised in that including the orifice plate (61) of through hole (611) is distributed with and is arranged on described
The supporting mechanism (62) of orifice plate (61) side；The supporting mechanism (62) includes being arranged at least one on the orifice plate (61)
Arcuate ribs；Side of the arcuate ribs away from the orifice plate (61) is provided with arch opening (6231), and the arch is opened
The opening direction of mouth (6231) is directed away from the side of the orifice plate (61)；
The arcuate ribs are arranged between the outside of the orifice plate (61) different directions；
The arcuate ribs include the arcuate ribs (623) set in the first direction with second direction respectively；
The arcuate ribs (623) of the first direction and the arcuate ribs (623) of the second direction are arranged in a crossed manner；
The first direction includes at least two arcuate ribs (623) being arranged side by side, and the second direction includes being arranged side by side
At least two arcuate ribs (623), the arcuate ribs 623 of the first direction and the arcuate ribs 623 of second direction are in hole
Intersect in the region of plate 61, each arcuate ribs (623) form the dome structure for setting of arching upward to the orifice plate (61) side.
2. the tube socket of fuel assembly according to claim 1, it is characterised in that the supporting mechanism (62) is further included to institute
State the supporting leg (621) that orifice plate (61) is supported；
The arcuate ribs include being arranged on the branch adjacent in the orifice plate (61) circumferential direction along the edge of the orifice plate (61)
Arcuate ribs (623) between leg (621)；And/or
The arcuate ribs include being arranged on the arch in the orifice plate (61) circumferential direction between non-conterminous two supporting leg (621)
Floor (623).
3. the tube socket of fuel assembly according to claim 2, it is characterised in that the arcuate ribs (623) are tabular knot
Structure, side corresponding with the orifice plate (61), supporting leg (621) are connected with the orifice plate (61), supporting leg (621) respectively.
4. the tube socket of fuel assembly according to claim 2, it is characterised in that be arranged between two supporting legs (621)
The arcuate ribs (623) be structure as a whole with the supporting leg (621).
5. the tube socket of fuel assembly according to claim 2, it is characterised in that the supporting mechanism (62) and the orifice plate
(61) it is structure as a whole；Or, the supporting mechanism (62) forms integrative-structure with the orifice plate (61) welding.
6. the tube socket of fuel assembly according to claim 2, it is characterised in that the bottom of at least two supporting legs (621)
Portion is equipped with lockhole (622).
7. the tube socket of fuel assembly according to claim 2, it is characterised in that be arranged between two supporting legs (621)
Relatively corresponding two supporting leg (621) of the arcuate ribs (623) between center line it is symmetrical.
8. the tube socket of fuel assembly according to claim 2, it is characterised in that the orifice plate (61) is square, the branch
Leg (621) includes four, respectively positioned at the corner of the orifice plate (61)；Or, the orifice plate (61) is in polygon, the supporting leg
(621) corner corresponding a plurality of with the side number of the orifice plate (61), and being located at the orifice plate (61) respectively is included.
9. the tube socket of fuel assembly according to claim 2, it is characterised in that outside the arch of the arch opening (6231)
If shape is in turn connected to form by main section along arch direction.
10. the tube socket of fuel assembly according to claim 2, it is characterised in that the arch of the arch opening (6231)
Shape includes the flat segments for being located at the segmental arc (6232) at both ends and being connected between the segmental arc (6232) at both ends
(6233)。
11. the tube socket of fuel assembly according to claim 10, it is characterised in that the flat segments (6233) and the hole
Plate (61) is parallel.
12. the tube socket of fuel assembly according to claim 2, it is characterised in that the arch of the arch opening (6231)
Shape is arc-shaped or arc.
13. the tube socket of fuel assembly according to claim 2, it is characterised in that the arch opening (6231) it is cross-section
Facial contour is arc.
14. the tube socket of fuel assembly according to claim 2, it is characterised in that the arch opening (6231) with it is described
In the corresponding two edges in two opposite sides of arcuate ribs (623), at least one edge is provided with chamfering structure.
15. a kind of fuel assembly, it is characterised in that including claim 1 to 14 any one of them tube socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611084087.0A CN106504799B (en) | 2016-11-30 | 2016-11-30 | The tube socket of fuel assembly and fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611084087.0A CN106504799B (en) | 2016-11-30 | 2016-11-30 | The tube socket of fuel assembly and fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106504799A CN106504799A (en) | 2017-03-15 |
| CN106504799B true CN106504799B (en) | 2018-04-17 |
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| CN201611084087.0A Active CN106504799B (en) | 2016-11-30 | 2016-11-30 | The tube socket of fuel assembly and fuel assembly |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN202650556U (en) * | 2012-07-19 | 2013-01-02 | 中国核动力研究设计院 | Nuclear fuel assembly lower tube socket with filter plate |
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| CN103021477A (en) * | 2012-11-26 | 2013-04-03 | 中国核动力研究设计院 | Lower pipe base of reactor fuel assembly |
| CN103337262A (en) * | 2013-06-18 | 2013-10-02 | 中国核动力研究设计院 | A kind of bottom nozzle with filtration foreign matter function |
| CN104538064A (en) * | 2014-12-19 | 2015-04-22 | 上海核工程研究设计院 | Fuel assembly lower pipe seat for balancing flow rate of coolant at reactor core inlet |
| CN206271424U (en) * | 2016-11-30 | 2017-06-20 | 中广核研究院有限公司 | The base of fuel assembly and fuel assembly |
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|---|---|---|---|---|
| US4996021A (en) * | 1990-05-29 | 1991-02-26 | Combustion Engineering, Inc. | Bottom nozzle to guide tube connection |
| CN202615804U (en) * | 2012-05-14 | 2012-12-19 | 中科华核电技术研究院有限公司 | Lower tube base and bottom device |
| CN202650556U (en) * | 2012-07-19 | 2013-01-02 | 中国核动力研究设计院 | Nuclear fuel assembly lower tube socket with filter plate |
| CN102867547A (en) * | 2012-09-18 | 2013-01-09 | 中科华核电技术研究院有限公司 | Lower pipe seat and bottom device of light-water reactor nuclear fuel assembly |
| CN103021477A (en) * | 2012-11-26 | 2013-04-03 | 中国核动力研究设计院 | Lower pipe base of reactor fuel assembly |
| CN103337262A (en) * | 2013-06-18 | 2013-10-02 | 中国核动力研究设计院 | A kind of bottom nozzle with filtration foreign matter function |
| CN104538064A (en) * | 2014-12-19 | 2015-04-22 | 上海核工程研究设计院 | Fuel assembly lower pipe seat for balancing flow rate of coolant at reactor core inlet |
| CN206271424U (en) * | 2016-11-30 | 2017-06-20 | 中广核研究院有限公司 | The base of fuel assembly and fuel assembly |
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| CN106504799A (en) | 2017-03-15 |
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