CN104036830B - Low pressure drop holding grid and fuel component with holding grid - Google Patents
Low pressure drop holding grid and fuel component with holding grid Download PDFInfo
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- CN104036830B CN104036830B CN201410279516.4A CN201410279516A CN104036830B CN 104036830 B CN104036830 B CN 104036830B CN 201410279516 A CN201410279516 A CN 201410279516A CN 104036830 B CN104036830 B CN 104036830B
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- guide vane
- grid
- low pressure
- guide
- pressure drop
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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 invention discloses a low pressure drop holding grid which comprises a plurality of inner strips and outer strips, wherein the plurality of inner strips are intersected with one another to form a net-shaped grid structure and are formed into a plurality of hollow grid units; the outer strips are arranged at the periphery of the grid structure in an enclosure manner and are fixed with the inner strips; a plurality of first guide wings which are arranged at intervals are formed on the upper edges of the outer strips; a plurality of second guide wings and third guide wings which are arranged alternatively are formed on the lower edges of the outer strips; each third guide wing is positioned between two adjacent second guide wings; the interval between each second guide wing and each third guide wing is smaller than the width of each first guide wing; the first guide wings, the second guide wings and the third guide wings all extend into the grid structure in an inclined and convex manner. By adopting the low pressure drop holding grid disclosed by the invention, hooking in hoisting is effectively prevented, and moreover through cooperation of three guide wings, the amplitude that the guide wings extend into the grid structure in the inclined and convex manner can be very small, so that the incident flow area is small, and the pressure loss of a coolant is small.
Description
Technical field
The present invention relates to nuclear reactor technology field, particularly relate to a kind of low pressure drop and keep grid and with this
Keep the fuel assembly of grid.
Background technology
A number of fuel rod is according to certain intervals arrangement (such as: 15 × 15 or 16 × 16 etc.) and is fixed
Becoming a branch of, referred to as reactor fuel assemblies, reactor fuel assemblies is mainly by upper base, bottom nozzle, holding
Grid (also referred to as mixing grillwork or grid spacer), control rod guide pipe and fuel rod composition.Wherein, lattice are kept
Grid are used for loading and positioning fuel rod and be made up of multiple interior bands and outer band, and multiple interior bands are mutually orthogonal
Form the latticed cell structure with multiple grill unit, and outer band is surrounded on outside interior band regularly.
In addition to a few grill unit is used for arranging control rod guide pipe, in remaining each grill unit, house one
Fuel rod.
Owing to fuel assembly has the highest lateral flexibility, so the lifting of fuel assembly can only vertically be carried out,
Prevent excessive lateral deformation, during actual fuel assembly handling material, due to fuel during lifting
Spacing the least between assembly, fuel assembly is easy to interfere with fuel assembly the most in place,
The manufacturing tolerance being likely to be due to the deformation of fuel assembly irradiation and fuel assembly and hanging device is interfered to cause, because of
This holding grid is it is necessary to have excellent guide function avoids above-mentioned interference, so keeping general on grid
Guide vane can be arranged consecutive fuel assembly is guided, be allowed to each other by.
Guide vane of the prior art is arranged at the upper and lower side edge of the outer band keeping grid and to cell structure
Inner inclination protrudes out, and structure and the arrangement mode of the guide vane of outer band upper and lower side are identical, consecutive fuel assembly
When there is transversion malposition in hoisting process, between the guide vane of adjacent holding grid, it is likely to occur mutual hook
Hang, and the amplitude protruded out in guiding flapwise cell structure is the least, occurs that the probability of hook is the highest, because of
Amplitude that this guide vane inwardly protrudes out needs to arrange bigger, and bigger protrudes out structure just because of this,
Make guide vane on the flow direction of coolant, define fluoran stream surface in fuel assembly to amass, long-pending the depositing of fluoran stream surface
Relatively big in the pressure loss making coolant fluid, and then the heat radiation in fuel assembly is had undesirable effect.
Therefore, it is necessary to provide one to be prevented from mutual hook, the most effectively reduce the holding of the pressure loss
Grid.
Summary of the invention
It is an object of the invention to provide one and be prevented from mutual hook, the most effectively reduce the pressure loss
Keep grid.
It is a further object to provide a kind of fuel assembly with described holding grid.
To achieve these goals, the invention provides a kind of low pressure drop and keep grid, including multiple interior bands
And outer band, the grid that multiple described interior bands intersect in latticed cell structure and form multiple hollow
Unit, described outer band encloses and is located at the periphery of described cell structure and fixes with described interior band, described outer bar
The top edge of band forms multiple spaced first guide vane, and the lower limb of described outer band forms multiple friendship
For the second guide vane and the 3rd guide vane of spread configuration, each described 3rd guide vane is positioned at described in adjacent two
Between second guide vane, and the interval between described second guide vane and the 3rd guide vane is led less than described first
The width of guide vane, described first guide vane, the second guide vane and the 3rd guide vane are all in described cell structure
Portion tilts to protrude out.
Compared with prior art, owing to the present invention is provided with different guide vanes at described outer band lower edges,
And the interval between described second guide vane and the 3rd guide vane is less than the width of described first guide vane, i.e. institute
State the first guide vane cannot be inserted between described second guide vane and the 3rd guide vane, therefore, even if hanging
The holding grid generation relative dislocation of adjacent fuel assembly during dress, the guide vane on adjacent holding grid also will not
There is relative hook, it is possible to ensure normally being smoothed out of lifting.Further, due to the cooperation of different guide vanes
Being prevented from the appearance of hook, therefore, described first guide vane, the second guide vane and the 3rd guide flapwise institute
Stating the size that cell structure inner inclination protrudes out and all can be configured to less, on the one hand this be conducive to reducing cooling
The fluoran stream surface that agent fluid flows to amasss, thus reduces the fluid pressure loss by grid, on the other hand can
Saving material during described outer band punching, when producing in enormous quantities, its effect saving material is more considerable.
It is preferred that the width of described first guide vane, the second guide vane and the 3rd guide vane is by described outer article
Band is gradually reduced in described cell structure, between adjacent described second guide vane and the end of the 3rd guide vane
Interval less than the width of end of described first guide vane.Adjacent described second guide vane and the 3rd are guided
Interval between the end of the wing arranges less than the width of end of described first guide vane, is present to ensure that institute
State the first guide vane cannot be inserted between described second guide vane and the 3rd guide vane, thus stop hook.
Specifically, the width of the end of described second guide vane is more than or equal to two adjacent described first guide vanes
End between the half at interval.The purpose so arranged is to when lifting, keep the outer bar of grid
Band can be limited in outside adjacent holding grid all the time.
It is preferred that the width of described second guide vane is less than the width of described first guide vane, the described 3rd leads
The width of guide vane is less than the width of described second guide vane.
It is preferred that described first guide vane is spaced on the junction of grill unit described in adjacent two, described
Second guide vane and the first guide vane are correspondingly arranged up and down, and described 3rd guide vane is spaced on adjacent two institutes
State the junction of grill unit.
It is preferred that offer multiple alternately arranged setting of length direction along described outer band on described outer band
The first groups of slots and the second groups of slots, described first groups of slots includes the first son that at least two is arranged above and below
Slot, described second groups of slots includes at least one second sub-slot and is positioned at above described second sub-slot also
Extend to the 3rd sub-slot of the upper end-face edge of described outer band；The end of described interior band is formed and described the
One groups of slots or the second groups of slots coordinate fixing fin..By described first groups of slots and the second groups of slots
Alternately arranged cooperation, can increase the positioning precision of described interior band so that assembles described low pressure drop and keeps lattice
During grid, described interior band is preferably ensured with the relative position of outer band.It addition, when described interior band is subject to
During to transverse load, use the slot of two kinds of forms to be spaced and can also avoid appearance on described outer band
The region of load concentration.
Specifically, described first groups of slots includes that the first sub-slot described in two, described second groups of slots include two
Described second sub-slot, the second sub-slot described in two is arranged above and below and is crisscross arranged with the described in two first sub-slot.
Specifically, described first groups of slots is correspondingly arranged with described first guide vane, and described second groups of slots sets
It is placed in the centre position of two adjacent described first guide vanes.
It is preferred that described outer band is formed with multiple rows of projection along its length towards the side of described cell structure,
The described grill unit of the protruding and adjacent described outer band of each row is corresponding and includes projection described at least three,
Described projection supports the fuel rod being positioned at described grill unit.Described convex role is and described interior band
On the most convex and spring jointly clamp described fuel rod, and often arrange described projection and include described at least three convex
Rising, accordingly even when wherein there is a described boss failure, remaining projection is maintained to described fuel
Supporting of rod.
Specifically, described projection is further opened with running through the discharge orifice inside and outside described outer band.In described projection
Described discharge orifice is evenly distributed on described outer band, it is possible to pressure reduction described outer band inside and outside is uniformly distributed,
Ensure that described outer band pressure reduction approximately equal on whole height, thus reduce the horizontal of described outer band
Load.
Present invention also offers a kind of fuel assembly, protect including upper base, bottom nozzle, multiple described low pressure drop
Holding grid, multiple fuel rod and multiple control rod guide pipe, multiple described low pressure drops keep grid vertically side
To arrangement, multiple described fuel rods and control rod guide pipe are inserted in described low pressure drop respectively and keep grid, institute
The upper end stating control rod guide pipe is fixed with described upper base, the lower end of described control rod guide pipe with described under
Base is fixed.
Compared with prior art, owing to described low pressure drop holding grid is employed herein, therefore to cooling
The pressure loss that agent fluid causes is less, and beneficially coolant takes away what described holding grid internal combustion charge bar produced
Heat.
Accompanying drawing explanation
Fig. 1 is the top partial view diagram that low pressure drop of the present invention keeps grid.
Fig. 2 is the partial perspective view that low pressure drop of the present invention keeps grid China and foreign countries band.
Fig. 3 is the fragmentary elevational view that low pressure drop of the present invention keeps grid China and foreign countries band.
Fig. 4 is the enlarged drawing in Fig. 2 at C.
Fig. 5 is the assembling schematic diagram that low pressure drop of the present invention keeps grid China and foreign countries band and interior band.
When Fig. 6 is lifting, two adjacent low pressure drops keep grid to prevent the principle schematic of hook.
Fig. 7 is the composition structural representation of fuel assembly of the present invention.
Detailed description of the invention
Below in conjunction with the Figure of description provided, presently preferred embodiments of the present invention is made description.
In conjunction with shown in Fig. 1 to Fig. 3, the present invention provides a kind of low pressure drop for light water reactor nuclear fuel assembly to protect
Hold grid 1, keep grid 1 to include that multiple interior band 10 and outer band 11, multiple interior bands 10 are mutually handed over
Pitching in latticed cell structure and formed the grill unit 100 of multiple hollow, outer band 11 encloses and is located at grid knot
The periphery of structure is also fixed with interior band 10.In addition to a few grill unit 100 accommodates control rod guide pipe,
A fuel rod is all accommodated in other most grill unit 100.And can arrange and prior art on interior band 10
In identical the most convex and spring so that fuel rod is clamped.
The top edge of outer band 11 forms multiple spaced first guide vane 111, outer band 11 following
Edge forms the second guide vane 112 and the 3rd guide vane 113 of multiple alternately arranged setting, each 3rd guide vane
113 between adjacent two second guide vanes 112, and between the second guide vane 112 and the 3rd guide vane 113
Interval less than the width of the first guide vane 111, first guide vane the 111, second guide vane 112 and the 3rd is led
Guide vane 113 all protrudes out to cell structure inner inclination.Owing to the first guide vane 111 cannot be inserted into the second guiding
Between the wing 112 and the 3rd guide vane 113, therefore when lifting it can be avoided that the holding lattice of consecutive fuel assembly
The hook of grid 1, it is ensured that lifting is smoothed out.And fluoran stream surface that guide vane is on coolant fluid flows to long-pending with
The pressure loss of grid is directly proportional, and is coordinated by three kinds of guide vanes, it is possible to reduces guide vane to greatest extent and stretches into
Length in cell structure, thus the fluoran stream surface reducing guide vane amasss, and then reduce the pressure loss.
Concrete, the first guide vane 111 is the junction being spaced on adjacent two grill unit 100, with
The adjacent multiple grill unit 100 of outer band 11 have multiple junction, being provided with of interval, these junctions
First guide vane 111 rather than each junction are both provided with the first guide vane 111.Multiple second guide vanes
Lower limb and multiple first guide vane 111 one_to_one corresponding of 112 bands 11 outside.3rd guide vane 113
In the centre position of adjacent two second guide vanes 112, therefore the 3rd guide vane 113 is also disposed on adjacent two
The junction of grill unit 100, and the precisely upper end, junction arranging the 3rd guide vane 113 do not sets
Put the junction of the first guide vane 111.
First guide vane the 111, second guide vane 112 and the 3rd guide vane 113 are the edges of band 11 outside
Formed, and tilt internally to protrude out to the internal slight curvature of cell structure, the first guide vane 111, second
The width of guide vane 112 and the 3rd guide vane 113 is gradually reduced in cell structure by outer band 11, makes
The shape obtaining first guide vane the 111, second guide vane 112 and the 3rd guide vane 113 is trapezoidal in bend, phase
Adjacent interval (the i.e. second guide vane 112 between the second guide vane 112 and the end of the 3rd guide vane 113
And the ultimate range between the 3rd guide vane 113) less than the width of end of the first guide vane 111, (i.e. first leads
The minimum widith of guide vane 111).By between adjacent second guide vane 112 and the end of the 3rd guide vane 113
Interval arranges less than the width of end of the first guide vane 111, is present to ensure that the first guide vane 111 cannot
It is inserted between the second guide vane 112 and the 3rd guide vane 113.
Dimensionally, the width of the end of the second guide vane 112 less than the width of the first guide vane 111, the 3rd
The width of the end of guide vane 113 is less than the width of the end of the second guide vane 112.Wherein the first guide vane
111 compared to existing technology in guide vane shorter, but wider, therefore these three guide vane is in grill unit
The projected area that in 100, fluid flows to is less.When being set to existing skill long-pending for the fluoran stream surface of these three guide vane
In art guide vane fluoran stream surface long-pending 89% time, whole holding grid 1 can reduce the pressure loss of about 6%.
And when using progressive die to produce, owing to each outer band 11 can reduce in the size of guide vane
0.6mm-1.2mm, therefore according to the differing heights of outer band 11, can save the material of 1.5%-3%.
As one more specifically size Selection, the width of the end of the second guide vane 112 is more than or equal to two
The half at the interval between the end of adjacent first guide vane 111.Define the end of two adjacent first guide vanes 111
Interval (ultimate ranges between i.e. two adjacent first guide vanes 111) between end is B, and the second guide vane
The width (minimum widith of the i.e. second guide vane 112) of the end of 112 is A, then A >=B/2.So set
The purpose put is to when lifting, keep the outer band 11 of grid 1 can be limited in adjacent holding all the time
Outside grid 1.
Offer multiple the first the most alternately arranged groups of slots 114 and second on outer band 11 to insert
Being also formed with multiple rows of protruding 116 in groove group 115, and outer band 11, each row's projection 116 includes three projections
116 and between adjacent the first groups of slots 114 and the second groups of slots 115.
As it is shown in figure 5, the effect of the first groups of slots 114 and the second groups of slots 115 is band 10 in location,
Therefore the end at interior band 10 is formed and coordinates fix convex with the first groups of slots 114 or the second groups of slots 115
Rib (not shown), the fin on interior band 10 injects the first groups of slots 114 or the second groups of slots 115 complete
Re-use the means such as welding after becoming location to be interfixed with outer band 11 by interior band 10.
Reviewing Fig. 2 and Fig. 3, the first groups of slots 114 includes at least two above-below direction row along outer band 11
First sub-slot 114a of row, the second groups of slots 115 includes at least one second sub-slot 115a, concrete,
In the present embodiment, the quantity of the first sub-slot 114a and the second sub-slot 115a is two.First slot
The position of namely interior band 10 location, the position of group 114 setting, and the both sides of interior band 10 are two phases
Adjacent grill unit 100, therefore the position of the first groups of slots 114 is exactly the connection of two adjacent grill unit 100
Place, the position of the first groups of slots 114 is corresponding with the first guide vane 111 and the second guide vane 112.Second slot
Group 115 also includes being positioned at above two second sub-slot 115a and extending to the top edge of outer band 11 and formed out
Mouthful upper along outer band 11 of the 3rd sub-slot 115b, two second sub-slot 115a and the 3rd sub-slot 115b
Lower direction arranges, and the second sub-slot 115a and the 3rd sub-slot 115b and the first sub-slot 114a is mutual
Arrange alternately add strong hardness and avoid stress to concentrate, the position of the second groups of slots 115 and the 3rd guide vane
113 is corresponding, and the i.e. second groups of slots 115 is arranged at the centre position of two adjacent first guide vanes 111, and therefore the
The position that arranges of two groups of slots 115 is equal to B/2 to the interval between the end of the first guide vane 111.By
One groups of slots 114 coordinates with the second the alternately arranged of groups of slots 115, can increase the positioning accurate of interior band 10
Degree so that during assembling low pressure drop holding grid 1, interior band 10 obtains more preferably with the relative position of outer band 11
Guarantee.It addition, when interior band 10 is by transverse load, use the slot of two kinds of forms to be spaced also
The region that load concentration occurs on band 11 outside can be avoided.
Referring again to Fig. 4 on the basis of Fig. 2, Fig. 3, protruding 116 are formed at outer band 11 ties towards grid
Three projections 116 in the side of structure, and each row's projection 116 arrange along the above-below direction of outer band 11,
Multiple rows of protruding 116 is corresponding with multiple grill unit 100 of adjacent outer band 11 respectively and protrude into grill unit
In 100, the effect of protruding 116 is to support the fuel rod in grill unit 100 and jointly press from both sides with the most convex and spring
Hold fuel rod.Often row protruding 116 includes three or more projections 116, accordingly even when wherein there is a projection
116 damage, and remaining projection 116 is maintained to support fuel rod.It addition, protruding 116
Perisporium further equally offers four fan stream water hole 116a, discharge orifice 116a run through inside and outside outer band 11
It is uniformly distributed outside on band 11, it is possible to pressure reduction outer band 11 inside and outside is uniformly distributed, it is ensured that outer bar
With the 11 pressure reduction approximately equals on whole height, thus reduce the transverse load of outer band 11.
Compared with prior art, owing to present invention band 11 lower edges outside is provided with different guide vanes,
And the interval that second between guide vane 112 and the 3rd guide vane 113 is less than the width of the first guide vane 111, i.e.
First guide vane 111 cannot be inserted between the second guide vane 112 and the 3rd guide vane 113, therefore, even if
When lifting there are relative dislocation as shown in Figure 6, adjacent holding lattice in the grid 1 that keeps of adjacent fuel assembly
Guide vane on grid 1 also will not occur relative hook, it is possible to ensures normally being smoothed out of lifting.Further,
Owing to the cooperation of different guide vanes is prevented from the appearance of hook, therefore, the first guide vane 111, second guides
The size that the wing 112 and the 3rd guide vane 113 protrude out to cell structure inner inclination all can be configured to less,
On the one hand this be conducive to the fluoran stream surface reduced in the coolant fluid flow direction to amass, thus reduces fluid by grid
The pressure loss, on the other hand can save material during outer band 11 punching, when producing in enormous quantities, and its joint
The effect of material saving is more considerable.
As it is shown in fig. 7, present invention also offers a kind of fuel assembly, including upper base 2, bottom nozzle 3, many
Individual low pressure drop keeps grid 1, multiple fuel rod 4 and multiple control rod guide pipe 5, and multiple low pressure drops keep lattice
Grid 1 arrange along the vertical direction, and multiple fuel rods 4 and control rod guide pipe 5 are inserted in low pressure drop respectively and keep
Grid 1, the upper end of control rod guide pipe 5 is fixing with upper base 2, the lower end of control rod guide pipe 5 and down tube
Seat 3 is fixed.Keep grid 1 owing to low pressure drop is employed herein, therefore when lifting, hook will not occur,
And the pressure loss that causes coolant fluid is less, holding grid 1 internal combustion charge bar 4 taken away by beneficially coolant
The heat produced.
The above disclosed preferred embodiments being only the present invention, its effect is to facilitate those skilled in the art
Member understands and also implements according to this, certainly can not limit the interest field of the present invention with this, therefore according to Shen of the present invention
Please the equivalent variations made of the scope of the claims, still fall within the scope that the present invention is contained.
Claims (11)
1. low pressure drop keeps a grid, and including multiple interior bands and outer band, multiple described interior bands are mutually handed over
The grill unit pitched in latticed cell structure and form multiple hollow, described outer band encloses and is located at described grid
The periphery of structure is also fixed with described interior band, it is characterised in that: the top edge of described outer band is formed multiple
Spaced first guide vane, what the lower limb of described outer band formed multiple alternately arranged setting second leads
Guide vane and the 3rd guide vane, each described 3rd guide vane described in adjacent two between second guide vane, and
Interval between described second guide vane and the 3rd guide vane less than the width of described first guide vane, described the
One guide vane, the second guide vane and the 3rd guide vane all protrude out to described cell structure inner inclination.
2. low pressure drop as claimed in claim 1 keeps grid, it is characterised in that: described first guide vane, the
The width of two guide vanes and the 3rd guide vane is gradually reduced in described cell structure by described outer band, phase
Interval between adjacent described second guide vane and the end of the 3rd guide vane is less than the end of described first guide vane
Width.
3. low pressure drop as claimed in claim 2 keeps grid, it is characterised in that: the end of described second guide vane
The width of end is more than or equal to the half at the interval between the end of two adjacent described first guide vanes.
4. low pressure drop as claimed in claim 1 keeps grid, it is characterised in that: the width of described second guide vane
Degree is less than the width of described first guide vane, and the width of described 3rd guide vane is less than described second guide vane
Width.
5. low pressure drop as claimed in claim 1 keeps grid, it is characterised in that: described first guide vane interval
Ground is positioned at the junction of grill unit described in adjacent two, and described second guide vane is the most corresponding with the first guide vane
Arranging, described 3rd guide vane is spaced on the junction of grill unit described in adjacent two.
6. low pressure drop as claimed in claim 1 keeps grid, it is characterised in that: offer on described outer band
First groups of slots of multiple alternately arranged settings of length direction along described outer band and the second groups of slots, described
First groups of slots includes the first sub-slot that at least two is arranged above and below, and described second groups of slots includes at least one
Individual second sub-slot and be positioned at above described second sub-slot and extend to described outer band upper end-face edge
Three sub-slots；The end formation of described interior band coordinates fixing with described first groups of slots or the second groups of slots
Fin.
7. low pressure drop as claimed in claim 6 keeps grid, it is characterised in that: described first groups of slots includes
First sub-slot described in two, described second groups of slots includes the second sub-slot described in two, and described in two, the second son is inserted
Groove is arranged above and below and is crisscross arranged with the described in two first sub-slot.
8. low pressure drop as claimed in claim 6 keeps grid, it is characterised in that: described first groups of slots and institute
Stating the first guide vane to be correspondingly arranged, described second groups of slots is arranged at the centre of two adjacent described first guide vanes
Position.
9. low pressure drop as claimed in claim 1 keeps grid, it is characterised in that: described outer band is towards described
The side of cell structure is formed with multiple rows of projection along its length, the protruding and adjacent described outer band of each row
Described grill unit is corresponding and includes described at least three protruding, and described projection is supported and is positioned at described grill unit
Interior fuel rod.
10. low pressure drop as claimed in claim 9 keeps grid, it is characterised in that: described projection is further opened with
Run through the discharge orifice inside and outside described outer band.
11. 1 kinds of fuel assemblies, keep grid, multiple fuel including upper base, bottom nozzle, multiple low pressure drop
Excellent and multiple control rod guide pipes, multiple described low pressure drops keep grid to arrange along the vertical direction, multiple described
Fuel rod and control rod guide pipe are inserted in described low pressure drop respectively and keep grid, described control rod guide pipe
Upper end is fixed with described upper base, and the lower end of described control rod guide pipe is fixed with described bottom nozzle, its feature
It is: described low pressure drop keeps grid as described in any one of claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410279516.4A CN104036830B (en) | 2014-06-20 | 2014-06-20 | Low pressure drop holding grid and fuel component with holding grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410279516.4A CN104036830B (en) | 2014-06-20 | 2014-06-20 | Low pressure drop holding grid and fuel component with holding grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104036830A CN104036830A (en) | 2014-09-10 |
| CN104036830B true CN104036830B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410279516.4A Active CN104036830B (en) | 2014-06-20 | 2014-06-20 | Low pressure drop holding grid and fuel component with holding grid |
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| Country | Link |
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| CN (1) | CN104036830B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318962B (en) * | 2014-10-16 | 2017-07-14 | 岭澳核电有限公司 | Grid spacer and fuel assembly with streamlined low pressure drop runner |
| CN105355237B (en) * | 2015-09-30 | 2017-06-20 | 上海核工程研究设计院 | A kind of fuel assembly grid that risk is hooked for reducing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2665292B1 (en) * | 1990-07-24 | 1992-11-13 | Framatome Sa | ADDITIONAL GRILLE FOR FUEL ASSEMBLY OF NUCLEAR REACTOR AND ASSEMBLY COMPRISING APPLICATION. |
| JP4416970B2 (en) * | 2001-08-16 | 2010-02-17 | 株式会社グローバル・ニュークリア・フュエル・ジャパン | Fuel spacer and fuel assembly |
| FR2878645B1 (en) * | 2004-11-30 | 2007-02-09 | Framatome Anp Sas | PEN HOLDING GRID FOR NUCLEAR FUEL ASSEMBLY AND CORRESPONDING ASSEMBLY |
| CN103544997B (en) * | 2013-10-28 | 2016-08-17 | 中科华核电技术研究院有限公司 | Grid spacer and reactor fuel assemblies |
| CN103680643A (en) * | 2013-12-18 | 2014-03-26 | 中科华核电技术研究院有限公司 | Mid span mixing grid |
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2014
- 2014-06-20 CN CN201410279516.4A patent/CN104036830B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104036830A (en) | 2014-09-10 |
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