CN206849503U - A kind of nuclear fuel assembly, location grid and band - Google Patents
A kind of nuclear fuel assembly, location grid and band Download PDFInfo
- Publication number
- CN206849503U CN206849503U CN201720668927.1U CN201720668927U CN206849503U CN 206849503 U CN206849503 U CN 206849503U CN 201720668927 U CN201720668927 U CN 201720668927U CN 206849503 U CN206849503 U CN 206849503U
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- China
- Prior art keywords
- band
- supporting part
- spring
- main body
- band main
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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
Abstract
It the utility model is related to a kind of nuclear fuel assembly, location grid and band.The band includes band main body and the spring being arranged in the band main body；Characterized in that, the spring includes elastic contact part, two connecting portions set at the both ends of the elastic contact part to the band main direction and two supporting parts being connected respectively with the connecting portion of plane where being convexly equipped in the band main body；The supporting part is respectively connecting in the band main body；The band also includes the flow passage of the opening position setting on the supporting part or close to the supporting part.By the opening position in band close to the supporting part of spring, or flow passage directly is set on the supporting part of spring, so as to reduce the Gating Area of spring, and then reduces the pressure loss of location grid；Furthermore, it is possible to reduce the rigidity of spring, the resilient clamping force of spring is improved, is more beneficial for the flexible clamping to fuel rod.
Description
Technical field
It the utility model is related to technical field of nuclear power, more particularly to a kind of nuclear fuel assembly, location grid and spring.
Background technology
Nuclear reactor is reacted by the chain nuclear fission of manual control fissile material, for producing heat etc., is sent out
Electricity etc..
Nuclear fuel is generally processed into fuel rod by existing nuclear reactor, is combined and is installed in location grid with control rod,
Form nuclear fuel assembly.Generally, location grid includes some bands 3, and band 3 intersects setting in same level, shape
Into multiple lattice cells.Fuel rod, control rod etc. are arranged in corresponding lattice cell, form overall nuclear fuel assembly.
In order to which fuel rod is clamped in location grid, spring 1 would generally be installed in lattice cell in the prior art, utilized
The elastic compression power of spring 1, fuel rod is clamped in lattice cell.As shown in figure 1, be a kind of structure type of existing band,
It includes band main body, the spring set in band main body 1, just convex etc..As illustrated, the band main body, spring 1, just it is convex
Etc. being formed in one.Spring 1 is to be directly connected to be arranged in band main body, cooling fluid by spring 1 crack 5, it is just convex
Gap between band main body is flowed, and because the connection between spring 1 and band main body is closing, formed larger
Closed area, pressure drop increase, be unfavorable for the fluid interchange of cooling fluid.Moreover, the connection rigidity of spring 1 and band main body compared with
Greatly, also it is unfavorable for flexible clamping of the spring 1 to fuel rod.
Utility model content
The technical problems to be solved in the utility model is, there is provided a kind of band, location grid that can effectively reduce pressure drop
And nuclear fuel assembly.
Technical scheme is used by the utility model solves its technical problem：There is provided and a kind of determine for nuclear fuel assembly
The band of position grid, including band main body and the spring that is arranged in the band main body；The spring includes being convexly equipped in institute
State the elastic contact part of plane where band main body, set at the both ends of the elastic contact part to the band main direction
Two connecting portions and two supporting parts being connected respectively with the connecting portion；The supporting part is respectively connecting to the band main body
On；The band also includes the flow passage of the opening position setting on the supporting part or close to the supporting part.
Preferably, the flow passage is the flowing hole opened up on the supporting part.
Preferably, the flowing hole is the triangle flowing hole opened up in the centre position of the supporting part；Or
The flowing hole is included in the pars intermedia that the supporting part centre position opens up and in the pars intermedia to both sides
Extend to the flank section of the band main body.
Preferably, the flow passage is the horn-like flowing hole formed between the supporting part and the band main body.
Preferably, it is additionally provided with the band main body just convex；It is described just it is convex positioned at the supporting part away from the elastic connecting
The side of contact portion；Also, the just convex projected direction is opposite with the elastic contact part；
The flowing hole just convex has been formed described between the supporting part.
Preferably, the spring also includes connecting cracking for the flow passage；
It is described to crack through being opened on the supporting part and connecting portion；Or described crack is passed through from the supporting part
The connecting portion, opened up through the elastic contact part.
Preferably, the flow passage is set in the outside of two supporting parts respectively；Or the flow passage is respectively in institute
State and opened up on two supporting parts.
The utility model also provides a kind of location grid for nuclear fuel assembly, is included in same level and mutually hands over
Fork sets, forms multiple bands for being used to accommodate the lattice cell of fuel rod；The band is any of the above-described described band.
Preferably, the spring of the band and band main body are integrally compressing；Or
It is fixedly mounted on after the spring is separately formed by welding or riveting in the band main body.
The utility model also provides a kind of nuclear fuel assembly, including fuel rod；The nuclear fuel assembly also includes above-mentioned
Location grid described in one；The fuel rod is arranged in the lattice cell of the location grid.
Implement the technical solution of the utility model, by the opening position in band close to the supporting part of spring, or directly
Flow passage is set on the supporting part of spring, so as to reduce the Gating Area of spring, and then reduces the pressure of location grid
Power is lost；Furthermore, it is possible to reduce the rigidity of spring, the resilient clamping force of spring is improved, is more beneficial for the flexibility to fuel rod
Clamping.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the band spring structure of prior art.
Fig. 2 is a kind of schematic diagram of one embodiment of band provided by the utility model.
Fig. 3 is a kind of another form of schematic diagram to crack of band provided by the utility model.
Fig. 4 is a kind of schematic diagram of another embodiment of band provided by the utility model.
Fig. 5 is a kind of schematic diagram of another embodiment of band provided by the utility model.
Fig. 6 is a kind of another form of schematic diagram to crack of band provided by the utility model.
Fig. 7 is a kind of another form of schematic cross-section of the elastic contact part of band provided by the utility model.
Fig. 8 is the displacement of one embodiment and prior art and the change of contact area of a kind of band provided by the invention
Curve synoptic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in Fig. 2 one embodiment of band of the present utility model, available in the location grid of nuclear fuel assembly.
The band includes band main body 10 and the spring 20 being arranged in band main body 10, compresses fuel rod using spring 20, makes
Fuel rod is obtained to be maintained in the lattice cell of location grid.
The spring 20 includes elastic contact part 21, connecting portion 22, supporting part 23 etc., passes through elastic contact part 21 and fuel rod
Contact, compress fuel rod and be maintained in the lattice cell of location grid.
The elastic contact part 21 is a straight tabular, and its length direction is parallel with the axis direction of fuel rod, so as to
When clamping fuel rod, larger contact area is formed between fuel rod, increases chucking power, and reduce the damage to fuel rod
Wound.
In the present embodiment, connecting portion 22 includes two, is set respectively at the both ends of elastic contact part 21.The connecting portion 22
Bearing of trend to away from fuel rod direction set so that elastic contact part 21 formed evagination shape, from band master
The place plane of body 10 is protruded to the direction of fuel rod, and connecting portion 22 plays a part of elastic arm, is provided for the clamping of fuel rod
Resilient clamping force.
Further, connecting portion 22 of two supporting parts 23 respectively with the both sides of elastic contact part 21 is separately connected, also, two
Support part 23 is respectively connecting in the band main body 10 of location grid, so as to which spring 20 is fixedly attached in band main body 10, and
And elastic contact part 21 protrudes from the plane where band main body 10, extend into lattice cell, lattice cell is arranged in so as to clamp
In fuel rod.
Further, gap be present between the plane at the top bottom surface of supporting part 23 and the place of band main body 10, so as to
To increase the connection of spring 20 rigidity；And it is possible to excessively stream gap is formed between supporting part 23 and band main body 10, in order to
Fluid passes through reduction pressure drop.
Further, elastic contact part 21, connecting portion 22, supporting part 23 are formed in one, and elastic contact part 21 with
Connected between connecting portion 22, between connecting portion 22 and supporting part 23 for rounding off, so as to reduce the pressure drop of fluid, lifting
Heat exchange efficiency.
As illustrated, the band also includes the flowing hole 24 opened up on supporting part 23.The flowing hole 24 is in supporting part
The triangle flowing hole 24 that 23 centre position opens up.It should be understood that flowing hole 24 is generally triangular in shape, in axial direction
The upper gradual change for forming flow area, reduces pressure drop.It should be understood that the shape of flowing hole 24 can also be designed to respectively as needed
Kind shape.
Further, in order to change the flow field of cooling agent and improve elastic force, offered on connecting portion 22 and crack 25, should
Crack and 25 be opened in opening position close to elastic contact part 21, can avoid opening up on elastic contact part 21 cracking and 25 be brought
The risk of fuel rod is damaged, and the Gating Area of spring 20 can be effectively reduced, and then reduces the pressure of location grid
Power is lost.Moreover, by crack 25 setting, the flexibility of connecting portion 22 can be effectively increased, and then improve spring 20
Flexibility, the clamping of more favourable fuel rod., 25 can also be even as shown in figure 3, cracking it should be understood that in another embodiment
Penetrate and open up in socket part 22 and elastic contact part 21, can further lift conveyance capacity and improve the bullet of elastic contact part 21
Property.
In the present embodiment, crack and 25 connected with flowing hole 24, from the position that connecting portion 22 intersects with elastic contact part 21
Place's (i.e. bending part of connecting portion 22 and elastic contact part 21) starts, to the direction away from elastic contact part 21, with parallel to combustion
The mode of charge bar axis direction is extended, and fluid can be avoided to form dead angle in bending part, fluid, which can pass through, to crack
25, reduce the overall pressure drop of location grid.
As illustrated, this cracks and 25 while opened up on two connecting portions 22, it can more effectively pass through for fluid, reduce pressure
Drop.It is of course also possible to according to being actually needed, only set on the connecting portion 22 of downside, so as to improve the integral rigidity of spring 20.
It is as shown in the table, be the present embodiment band displacement and fuel rod contact force, contact area change trend,
Compared with prior art, there is the lifting of obvious technique effect, can refer to shown in Fig. 8.When displacement starts increase, existing skill
The contact force of art, the variation tendency of contact area, hence it is evident that less than the variation tendency of the present embodiment, it is seen then that the band of the present embodiment
Clamping effect be substantially better than prior art.
As shown in figure 4, being another embodiment of band of the present utility model, its difference basic with a upper embodiment exists
In the shape of flowing hole 24 is different, and other structures and a upper embodiment are essentially identical, therefore do not repeat.
In the present embodiment, the flowing hole 24 is included in pars intermedia 241 that the centre position of supporting part 23 opens up and in
Between portion 241 flank section 242 of band main body 10 is extended to both sides.As illustrated, the pars intermedia 241 is roughly triangular, and
Flank section 242 is substantially elongated, so as to which axle is upwardly formed the gradual change of flow area, reduces pressure drop；Moreover, the mistake that increase is horizontal
Fluid space, improve circulation efficiency.
Further, insertion is opened up on connecting portion 22, elastic contact part 21 cracks 25, the pars intermedia with flowing hole 24
241 connections.Certainly, cracking 25 can also only be opened on connecting portion 22 or connecting portion 22 and partial elastic contact part
On 21.
As shown in figure 5, being another embodiment of band of the present utility model, its difference basic with a upper embodiment exists
In flow passage is the horn-like flowing hole 24 formed between the supporting part 23 of spring 20 and band main body 10.It is corresponding, in bar
Firm convex 11 are additionally provided with band main body 10.Just convex 11 are located at side of the supporting part 23 away from elastic contact part 21 for this；Also, firm convex 11
Projected direction it is opposite with elastic contact part 21；Flowing hole 24 is formed just between convex 11 and supporting part 23.
Further, crack and 25 penetrate and open up on connecting portion 22 and elastic contact part 21, so as to connect the upside of spring 20
With the flowing hole 24 of downside, further improve flow field, reduce pressure drop.
Further, since horn-like flowing hole 24 and cracking 25 opens up so that supporting part 23 divides for left and right two parts, and
Fairshaped edge is formed, can further reduce pressure drop.
It should be understood that cracking on spring 20 25 can be positioned only on connecting portion 22 as needed, as shown in fig. 6,
So as to avoid cracking 25 on elastic contact part 21, avoid when clamping fuel rod, fuel rod is caused to hang the risk damaged.
Further, as shown in fig. 7, on the elastic contact part 21 of spring 20, Baltimore groove 212 can also be suppressed, its
Be recessed the direction that direction is remote fuel rod, so as to increase the rigidity of elastic contact part 21, prevents from collapsing.
In one embodiment of location grid of the present utility model, it can be used in nuclear fuel assembly.In the present embodiment
In, the location grid includes some bands, and such band can use the band of any of the above-described embodiment.
Such band is mutually perpendicular to arranged in a crossed manner, " egg-crate type " structure of formation with multiple lattice cells.Most lattice cell
For accommodating fuel rod；Certainly, it is used to accommodate control rod etc. in other lattice cells.
In certain embodiments, the band can be divided into the first band, second strip, accommodate the lattice cell of fuel rod by two
The first parallel band and two parallel second strips intersect to form, and the first band plane and second strip plane are vertical.
In one embodiment of the present utility model, also disclose a kind of nuclear fuel assembly, including above-described embodiment is determined
Position grid and fuel rod.The location grid can use the location grid of above-mentioned any embodiment, will not be described here.Combustion
Charge bar can be located in the lattice cell of location grid, and is compressed by the prominent spring 20 in lattice cell, kept so as to position
Fuel rod.
Step in the method for the utility model embodiment can be according to being actually needed the adjustment of carry out order, merge and delete
Subtract.Module or unit or subelement in the device of the utility model embodiment can be merged, divided according to being actually needed
With delete.
Above disclosed is only preferred embodiment of the present utility model, certainly can not be new to limit this practicality with this
The interest field of type, one of ordinary skill in the art will appreciate that all or part of flow of above-described embodiment is realized, and according to this
Utility model right requires made equivalent variations, still falls within the scope that utility model is covered.
Claims (10)
1. a kind of band of location grid for nuclear fuel assembly, including band main body and it is arranged on the band main body
On spring；Characterized in that, the spring includes the elastic contact part of plane where being convexly equipped in the band main body, described
Two connecting portions that the both ends of elastic contact part are set to the band main direction and be connected respectively with the connecting portion two
Supporting part；The supporting part is respectively connecting in the band main body；The band is also included on the supporting part or close to institute
State the flow passage that the opening position of supporting part is set.
2. band according to claim 1, it is characterised in that the flow passage is the excessively stream opened up on the supporting part
Hole.
3. band according to claim 2, it is characterised in that the flowing hole is to be opened in the centre position of the supporting part
If triangle flowing hole；Or
The flowing hole is included in the pars intermedia that the supporting part centre position opens up and extended in the pars intermedia to both sides
To the flank section of the band main body.
4. band according to claim 1, it is characterised in that the flow passage is in the supporting part and the band master
The horn-like flowing hole formed between body.
5. band according to claim 4, it is characterised in that be additionally provided with the band main body just convex；The just convex position
In side of the supporting part away from the elastic contact part；Also, the just convex projected direction and the elastic contact part
Conversely；
The flowing hole just convex has been formed described between the supporting part.
6. according to the band described in claim any one of 1-5, it is characterised in that the spring also includes connecting the flow passage
Crack；
It is described to crack through being opened on the supporting part and connecting portion；Or it is described crack from the supporting part pass through described in
Connecting portion, opened up through the elastic contact part.
7. band according to claim 6, it is characterised in that the flow passage is set on the outside of two supporting parts respectively
Put；Or the flow passage opens up on two supporting part respectively.
8. a kind of location grid for nuclear fuel assembly, it is included in same level the setting that intersects, forms multiple use
In the band for the lattice cell for accommodating fuel rod；Characterized in that, the band is the band described in claim any one of 1-7.
9. location grid according to claim 8, it is characterised in that the spring of the band is integrally suppressed with band main body
Shaping；Or
It is fixedly mounted on after the spring is separately formed by welding or riveting in the band main body.
10. a kind of nuclear fuel assembly, including fuel rod；Characterized in that, the nuclear fuel assembly also includes claim 8 or 9
Described location grid；The fuel rod is arranged in the lattice cell of the location grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720668927.1U CN206849503U (en) | 2017-06-09 | 2017-06-09 | A kind of nuclear fuel assembly, location grid and band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720668927.1U CN206849503U (en) | 2017-06-09 | 2017-06-09 | A kind of nuclear fuel assembly, location grid and band |
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| Publication Number | Publication Date |
|---|---|
| CN206849503U true CN206849503U (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720668927.1U Active CN206849503U (en) | 2017-06-09 | 2017-06-09 | A kind of nuclear fuel assembly, location grid and band |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230501A (en) * | 2017-06-09 | 2017-10-03 | 中广核研究院有限公司 | A kind of nuclear fuel assembly, location grid and band |
| CN112275908A (en) * | 2020-10-10 | 2021-01-29 | 湖南大学 | Nuclear fuel strip mould |
-
2017
- 2017-06-09 CN CN201720668927.1U patent/CN206849503U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230501A (en) * | 2017-06-09 | 2017-10-03 | 中广核研究院有限公司 | A kind of nuclear fuel assembly, location grid and band |
| CN112275908A (en) * | 2020-10-10 | 2021-01-29 | 湖南大学 | Nuclear fuel strip mould |
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