CN104485137B - Fuel assembly blending screenwork with rectifying type blending wings - Google Patents
Fuel assembly blending screenwork with rectifying type blending wings Download PDFInfo
- Publication number
- CN104485137B CN104485137B CN201410734800.6A CN201410734800A CN104485137B CN 104485137 B CN104485137 B CN 104485137B CN 201410734800 A CN201410734800 A CN 201410734800A CN 104485137 B CN104485137 B CN 104485137B
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- China
- Prior art keywords
- wing
- fuel assembly
- mixed
- blending
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- G21C3/34—Spacer grids
- G21C3/352—Spacer grids formed of assembled intersecting strips
-
- 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
- G21C3/34—Spacer grids
-
- 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
- G21C3/34—Spacer grids
- G21C3/3432—Grids designed to influence the coolant, i.e. coolant mixing function
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel assembly blending screenwork with rectifying type blending wings. The fuel assembly blending screenwork comprises an outer strip and a plurality of inner strips, wherein the plurality of inner strips are intercrossed to form a grid structure, the grid structure is provided with a plurality of hollow grid units, the outer strip surrounds the periphery of the grid structure and is fixed together with the inner strips, the grid structure is provided with a plurality of blending wings, the blending wings are stretched into the grid units, and flow guide grooves are formed in the surfaces, facing to the interiors of the grid units, of the blending wings. The fuel assembly blending screenwork disclosed by the invention can be used for reducing the shunt phenomenon of a coolant towards the left and right sides of the blending wings, limiting the irregular flow of the fluid, playing a rectifying function and ensuring that the blending wings are used for improving the thermal balance effect of the fuel assembly.
Description
Technical field
The present invention relates to a kind of reactor component, more particularly to a kind of fuel assembly for mixing the wing with rectification type mixes lattice
Frame.
Background technology
A number of fuel rod is arranged (such as according to certain intervals：15 × 15 or 17 × 17 etc.) and be fixed to it is a branch of,
Referred to as reactor fuel assemblies, reactor fuel assemblies mainly by upper base, bottom nozzle, mixing grillwork (also referred to as grid spacer),
Control rod guide pipe and fuel rod are constituted.Wherein, mixing grillwork is used to load fuel rod and by multiple interior bands and enclose in interior bar
Outer band composition outside band.Multiple interior bands intersect it is (generally orthogonal) formed with multiple grill units it is latticed
Cell structure.
It is well known that the chain reaction in nuclear reactor can produce a large amount of harmful radioactive substances, such as iodine
131st, Ce 137 etc., in order to avoid these radioactive substance leakages, is provided with zircaloy shell, reactor pressure outside nuclear reactor
The multiple protective layers such as force container and concrete Secure Shell are extraneous dirty by serious radiation during the accidents such as blast to prevent
Dye.However, these protective layers are both for the emergent safety measure that being taken after accident occurs in nuclear reactor, core is really can ensure that
There is no the deciding factor exploded in reactor safety, be chain reaction speed and temperature in control nuclear reactor.Therefore, fuel
Play the flow-control of the light water that moderator and coolant are acted in component just concerning important, and the mixing grillwork of fuel assembly for
The circulation of light water is particularly important.
In order to strengthen the mixed flow of fuel assembly internal coolant, typically can take setting in interior bar and stretch in grill unit
The wing is mixed, the break-in occurred when flowing through mix the wing from bottom to up in fuel assembly using coolant, in the downstream of mixing grillwork
Produce crossing current and be vortexed to improve the circulation of coolant in fuel assembly, so as to improve thermal technology's surplus of fuel assembly.
However, the wing of mixing adopted in prior art has some limitations in structure so that it is lifted more than thermal technology
The effect of amount is substantially reduced.As shown in figure 3, existing mix the plate-like structure that the wing is class triangle, when coolant fluid F to
During upper flowing, can directly clash into and mix the wing in plane surface, the remaining coolant flow so as to produce shunting, after shunting upwards
Body U is only required for us, and is weakened upwards along coolant fluid L and R that wing surface spreads to the left and right is mixed
Coolant fluid, here it is the reason for effect for mixing wing raising thermal technology's surplus is lowered.In addition, the coolant flow of left and right diffusion
Know from experience the flow field to surrounding and produce disturbance, increase invalid kinetic energy dissipation.
Therefore, it is necessary to providing one kind can reduce coolant shunting, the fuel assembly mixing grillwork of thermal property is improved.
The content of the invention
It is an object of the invention to provide one kind can reduce coolant shunting, the fuel assembly for improving thermal property is mixed
Screen work.
To achieve these goals, the invention provides a kind of fuel assembly mixing grillwork that the wing is mixed with rectification type,
Including outer band and multiple interior bands, multiple interior bands intersect to form cell structure, and the cell structure has many
Individual hollow grill unit, the outer band is trapped among the periphery of the cell structure and fixes with the interior band, the grid
Structure have it is multiple mix the wing, it is described to mix that the wing is stretched in the grill unit and the wing of mixing is towards in the grill unit
The one side in portion offers guiding gutter.
Compared with prior art, be provided with the wing described leading due to mixing described in fuel assembly mixing grillwork of the present invention
Chute so that the surface for mixing the wing is no longer plane, and the guiding gutter is directed towards inside the grill unit, therefore
Be not in directly to clash into but can be collected by the guiding gutter when coolant fluid flows up to described mixing at the wing
And more flow to the downstream direction of mixing grillwork, increased and mix length, mix wing phase with prior art middle plateform shape
Than, coolant can be effectively reduced to the shunting for mixing wing left and right directions, the unordered flowing of fluid is limited, serve whole
The effect of stream, it is ensured that described to mix the effect that the wing improves thermal technology's surplus of fuel assembly.
It is preferred that the groove width of the guiding gutter outwards gradually expands from the bottom of the guiding gutter.The guiding gutter is set
The wide shape of bottom narrow opening is set to, the gradient of side wall of the guiding gutter can be utilized by the coolant of the guiding gutter both sides
Fluid is incorporated in the guiding gutter and, to both sides dispersion, improves rectification effect without again along the guiding gutter flow further downstream
Really.
Specifically, the cross section of the guiding gutter is triangular in shape, trapezoidal, polygon or arc.
It is preferred that the interior band is fixed in described one end for mixing the wing, the other end is bendingly into the grill unit
Extend.
Specifically, the guiding gutter extends along the overbending direction for mixing the wing.So setting guiding gutter ensure that cold
But agent fluid flows under the guiding of the guiding gutter according to the bending trend for mixing the wing, it is to avoid sinuous flow occur, maximum
Length is mixed in increased for degree.
Specifically, it is described mix angular range from wing opposed vertical direction to the grill unit inner bending be 0 degree -90
Degree.
More specifically, it is described mix angular range from wing opposed vertical direction to the grill unit inner bending be 20 degree-
80 degree.
It is preferred that being equipped with fuel rod in the grill unit, the wing of mixing has near one end of the fuel rod
Press close to the rectification side of the fuel rod.By the rectification side for arranging the fuel rod, coolant can be effectively reduced
From the gap leakage current mixed between the wing and the fuel rod, so that more coolants are along the inclination folding for mixing the wing
Curved direction flow further downstream, and then greatly improve the thermal property for mixing the wing.
Description of the drawings
Fig. 1 is the sectional perspective schematic diagram of mixing grillwork of the present invention.
Fig. 2 is the partial schematic plan view of mixing grillwork of the present invention.
Fig. 3 is that the flow direction schematic diagram around the wing is mixed in prior art.
Fig. 4 is the bending angle schematic diagram that the wing is mixed in the present invention.
Fig. 5 is the cross-sectional view that channel shape on the wing is mixed in first embodiment of the invention.
Fig. 6 is the cross-sectional view that channel shape on the wing is mixed in second embodiment of the invention.
Fig. 7 is the cross-sectional view that channel shape on the wing is mixed in third embodiment of the invention.
Fig. 8 is the cross-sectional view that channel shape on the wing is mixed in fourth embodiment of the invention.
Fig. 9 is the cross-sectional view that channel shape on the wing is mixed in fifth embodiment of the invention.
Figure 10 is the cross-sectional view that channel shape on the wing is mixed in sixth embodiment of the invention.
Figure 11 is the cross-sectional view that channel shape on the wing is mixed in seventh embodiment of the invention.
Figure 12 is the cross-sectional view that channel shape on the wing is mixed in eighth embodiment of the invention.
Specific embodiment
Description is made to presently preferred embodiments of the present invention with reference to the Figure of description for being given.
As shown in Figure 1 and Figure 2, the present invention with rectification type mix the wing fuel assembly mixing grillwork 1 include outer band 10 and
Multiple interior bands 11, multiple interior bands 11 intersect to form cell structure, and the cell structure has multiple hollow
Grill unit 110, the outer band 10 is trapped among the periphery of the cell structure and fixes with the interior band 11, the grid knot
Structure have it is multiple mix the wing 12, it is described to mix that the wing 12 is stretched in the grill unit 110 and the wing 12 of mixing is towards the lattice
One side inside grid unit 110 offers guiding gutter 120.
Interior band 11 is actually divided into two groups, in one of which band 11 be parallel to each other and it is equally spaced from each other arrange, it is another
Group is also in equally spaced from each other and arranges in parallel to each other, and band 11 is mutually orthogonal in this two groups forms the cell structure.It is hollow
The grill unit 110 for fuel rod or control rod guide pipe (not shown) grafting, fuel rod and control rod guide pipe
Cylindrical structure.T is cross-wind direction of the coolant fluid in mixing grillwork 1 in Fig. 2.
The top edge of the interior band 11 is fixed in described one end for mixing the wing 12, and the other end is bendingly to the grid list
Extend in unit 110.The bending for mixing the wing 12 is referred to mixes the opposed vertical direction of the wing 12 into the grill unit 110 partially
Pendulum.While beat, the wing 12 of mixing can also have certain radian on the direction that its own extends, and can be with
With certain inclination, its true form is designed according to demand when implementing its function, and this design is this area skill
Art personnel need not move through the routine techniquess content that creative thinking just can be learnt.In addition, any two phase in the present embodiment
It is adjacent it is described mix the wing 12 and correspond to respectively stretch into inside the different grill units 110, that is, each grill unit 110
Inside is equipped with described in one mixes the wing 12.Certainly, the setting quantity for mixing the wing 12 is also not limited.
As shown in figure 4, the other end for mixing the wing 12 (mixes the wing 12 to the angle, θ of the inner bending of the grill unit 110
With the angle of vertical direction) scope be 0 degree -90 degree, it is preferred that the scope of the angle, θ takes 20 degree of -80 degree.
The overbending direction that the guiding gutter 120 mixes the wing 12 along described extends, when the other end for mixing the wing 12 it is relative
It is described mix the wing 12 be fixed on the interior band 11 one end bend when, the guiding gutter 120 with its bending arrange, it is ensured that cooling
Agent fluid flows under the guiding of the guiding gutter 120 according to the bending trend for mixing the wing 12, it is to avoid sinuous flow occur, most
Big increased for degree mixes length.
It is described to mix one end that the wing 12 stretched in the grill unit 110 and formed as a kind of preferred embodiment
An arc opening corresponding with the outline of the fuel rod, the arc opening has an outline for pressing close to the fuel rod
And curved rectification side 122.By the rectification side 122 for arranging the fuel rod, coolant can be effectively reduced
From the gap leakage current mixed between the wing 12 and the fuel rod, so that more coolants mix inclining for the wing 12 along described
Oblique wrap direction flow further downstream, and then greatly improve the thermal property for mixing the wing 12.
As shown in Fig. 5 to Figure 11, the groove width of guiding gutter 120 is outside gradually from the bottom of the guiding gutter 120 in the present invention
Expand, that is to say, that the width at the width ratio of the bottom of the guiding gutter 120 its opening is little, is beneficial to coolant and leads from described
In guiding gutter 120 described in two side inflows of chute 120.The cross section of the guiding gutter 120 can be with triangular in shape, trapezoidal, polygon
Shape or arc etc. meet formation described above.
Fig. 5 show the first embodiment of the present invention, wherein the diapire of the guiding gutter 120 is in gentle V-arrangement, and water conservancy diversion
Groove 120 has a two side, one of two side relatively it is described mix the wing 12 open up the guiding gutter 120 surface it is perpendicular
Arrange, opposite side wall is inclined to set with respect to the surface, and inclined direction is ecto-entad to guarantee the guiding gutter 120
Groove width of the groove width of opening more than its bottom.
Fig. 6 show second embodiment of the invention, and it is the guiding gutter 120 that the present embodiment is different from first embodiment
The all relatively described wing 12 of mixing of two side walls open up the surface of the guiding gutter 120 being obliquely installed in ecto-entad.
Fig. 7 is refer to, the diapire of the guiding gutter 120 in third embodiment of the invention is made up of two parts, wherein one
Point diapire relatively it is described mix the wing 12 open up the guiding gutter 120 surface be inclined to set and another part diapire with respect to the table
Face is set in parallel.The guiding gutter 120 has two side walls, the same first embodiment of setting of two side walls.
Fourth embodiment of the invention is as shown in figure 8, the cross section of guiding gutter 120 described in the present embodiment is isosceles triangle
Shape.
Fifth embodiment of the invention as shown in figure 9, guiding gutter 120 described in the present embodiment cross section be in isosceles trapezoid,
I.e. described guiding gutter 120 has one to open up the parallel diapire and two in surface of the guiding gutter 120 by outer with the wing 12 of mixing
Intilted side wall.
Figure 10 is looked at, it show the 6th embodiment of the present invention, guiding gutter 120 described in the present embodiment has two
The side wall that the diapire being inclined to set and two are obliquely installed, and the inclined degree of diapire and side wall is all than in second embodiment
It is bigger, and the length of diapire is shorter, the length of side wall is longer.Therefore the depth of the guiding gutter 120 is deeper, and water conservancy diversion effect is more
It is good.
It is known that the diapire of the guiding gutter 120 in the 7th embodiment of the present invention in smooth circle with reference to Figure 11
Arc.
With reference to Figure 12, it is shown in the 8th embodiment of the present invention, the shape of the guiding gutter 120 in the present embodiment
Shape is identical with sixth embodiment, except that, guiding gutter 120 described in sixth embodiment is extended by the top for mixing the wing 12
Terminate to the bottom for mixing the wing 12, and in the present embodiment guiding gutter 120 is then extended down on interior band 11, so as to increase
Strong drainage effect.It is natural, in the above other embodiment other shapes the guiding gutter 120 it can also be provided that with this
Identical extends downwardly into the form on interior band 11 in embodiment.
Eight embodiments from more than, the present invention does not do any restriction to shape, the size of the guiding gutter 120, only
Will its be arranged on it is described mix the wing 12 towards the one side grill unit 110 inside and along the extension of coolant flow direction, and
Guide functions can be played.
It should be noted that the improvement of the present invention is that the guiding gutter 120 is arranged on the wing 12 is mixed, as mixing
The concrete shape of the wing 12 and the inclination bending situation of the wing 12 is mixed, be not admitted to the key protection point of the present invention, therefore description is attached
The only shape of guiding gutter 120 presented in Fig. 5-11 rather than the shape of cross section for mixing the entirety of the wing 12.Above example
Mentioned in mix the structure of the wing 12, only for convenience of the understanding of the present invention, rather than the guiding gutter 120 is entered with the structure
Row is limited.
The present invention compared with prior art, sets due to mixing described in fuel assembly mixing grillwork 1 of the present invention on the wing 12
The guiding gutter 120 is put so that the surface for mixing the wing 12 is no longer plane, and the guiding gutter 120 is directed towards institute
State inside grill unit 110, therefore be not in directly to clash into when coolant fluid flows up to described mixing at the wing 12
But can be collected by the guiding gutter 120 and more be flowed to the downstream direction of mixing grillwork 1, increased and mix length,
With prior art middle plateform shape mix the wing compared with, can effectively reduce coolant to it is described mix the left and right directions of the wing 12 point
Stream, limits the unordered flowing of fluid, serves the effect of rectification, it is ensured that described to mix the thermal technology that the wing 12 improves fuel assembly
The effect of surplus.
Above disclosed is only the preferred embodiments of the present invention, and its effect is to facilitate those skilled in the art to understand
And implement according to this, can not limit the interest field of the present invention with this certainly, therefore made according to scope of the present invention patent
Equivalent variations, still fall within the scope that the present invention is covered.
Claims (8)
1. a kind of fuel assembly mixing grillwork that the wing is mixed with rectification type, including outer band and multiple interior bands, it is multiple described
Interior band intersects to form cell structure, and the cell structure has multiple hollow grill units, and the outer band is trapped among
The periphery of the cell structure is simultaneously fixed with the interior band, it is characterised in that：The cell structure has multiple mixes the wing, institute
State and mix that the wing is stretched in the grill unit and the wing of mixing offers guiding gutter towards the one side inside the grill unit.
2. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 1 with rectification type, it is characterised in that：The water conservancy diversion
The groove width of groove outwards gradually expands from the bottom of the guiding gutter.
3. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 2 with rectification type, it is characterised in that：The water conservancy diversion
The cross section of groove is triangular in shape, trapezoidal, polygon or arc.
4. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 1 with rectification type, it is characterised in that：It is described to mix
The interior band is fixed in one end of the wing, and the other end bendingly extends into the grill unit.
5. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 4 with rectification type, it is characterised in that：The water conservancy diversion
Groove extends along the overbending direction for mixing the wing.
6. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 4 with rectification type, it is characterised in that：It is described to mix
Wing opposed vertical direction to the angular range of the grill unit inner bending is 0 degree of -90 degree.
7. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 6 with rectification type, it is characterised in that：It is described to mix
Wing opposed vertical direction to the angular range of the grill unit inner bending is 20 degree of -80 degree.
8. the fuel assembly mixing grillwork of the wing is mixed as claimed in claim 1 with rectification type, it is characterised in that：The grid
Location contents is equipped with fuel rod, and the wing of mixing has the rectification side of the fuel rod near the side of the fuel rod.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734800.6A CN104485137B (en) | 2014-12-05 | 2014-12-05 | Fuel assembly blending screenwork with rectifying type blending wings |
| GB1710630.3A GB2553418B (en) | 2014-12-05 | 2015-11-30 | Fuel assembly mixing grid with flow deflector mixing vanes |
| PCT/CN2015/095902 WO2016086809A1 (en) | 2014-12-05 | 2015-11-30 | Fuel component stirring-mixing lattice provided with fairing-type stirring-mixing vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734800.6A CN104485137B (en) | 2014-12-05 | 2014-12-05 | Fuel assembly blending screenwork with rectifying type blending wings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104485137A CN104485137A (en) | 2015-04-01 |
| CN104485137B true CN104485137B (en) | 2017-04-26 |
Family
ID=52759675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410734800.6A Active CN104485137B (en) | 2014-12-05 | 2014-12-05 | Fuel assembly blending screenwork with rectifying type blending wings |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104485137B (en) |
| GB (1) | GB2553418B (en) |
| WO (1) | WO2016086809A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485137B (en) * | 2014-12-05 | 2017-04-26 | 中广核研究院有限公司 | Fuel assembly blending screenwork with rectifying type blending wings |
| WO2018053812A1 (en) * | 2016-09-23 | 2018-03-29 | 中广核研究院有限公司 | Outer strip, spacer grid for nuclear reactor fuel assembly and nuclear reactor fuel assembly |
| CN111477356A (en) * | 2020-05-25 | 2020-07-31 | 中国原子能科学研究院 | Grid cell type positioning grid with turbulence wings |
| CN114220558B (en) * | 2021-11-18 | 2023-06-13 | 中国核动力研究设计院 | Fuel assembly grid, fuel assembly and pressurized water reactor core |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371769A (en) * | 1992-07-10 | 1994-12-06 | Mitsubishi Nuclear Fuel Co. | Fuel rod support grids for fuel assembly |
| US6714619B2 (en) * | 2001-08-07 | 2004-03-30 | Korea Atomic Energy Research Institute | Spacer grid with double deflected vanes for nuclear fuel assemblies |
| CN1820326A (en) * | 2004-03-25 | 2006-08-16 | 法玛通Anp有限公司 | Fuel assembly for a pressurize-water nuclear reactor |
| CN102568632A (en) * | 2012-03-02 | 2012-07-11 | 中科华核电技术研究院有限公司 | Screenwork for nuclear fuel component and mixing stick for screenwork |
| CN202948731U (en) * | 2012-12-20 | 2013-05-22 | 中国核动力研究设计院 | Positioning grillwork with blending property for nuclear fuel assembly |
| CN204332387U (en) * | 2014-12-05 | 2015-05-13 | 中科华核电技术研究院有限公司 | The fuel assembly mixing grillwork of the wing is mixed containing rectification type |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4039379A (en) * | 1975-02-28 | 1977-08-02 | Exxon Nuclear Company, Inc. | Mixing vane grid spacer |
| DE10309742B4 (en) * | 2003-03-06 | 2005-01-27 | Framatome Anp Gmbh | spacer |
| FR2935531B1 (en) * | 2008-08-26 | 2010-09-17 | Areva Np | SPACING GRID FOR FUEL ASSEMBLY AND ASSOCIATED FUEL ASSEMBLY |
| CN101752015B (en) * | 2008-12-03 | 2012-07-11 | 中国核动力研究设计院 | Location grid with inclined mixing blade |
| CN104485137B (en) * | 2014-12-05 | 2017-04-26 | 中广核研究院有限公司 | Fuel assembly blending screenwork with rectifying type blending wings |
-
2014
- 2014-12-05 CN CN201410734800.6A patent/CN104485137B/en active Active
-
2015
- 2015-11-30 WO PCT/CN2015/095902 patent/WO2016086809A1/en active Search and Examination
- 2015-11-30 GB GB1710630.3A patent/GB2553418B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371769A (en) * | 1992-07-10 | 1994-12-06 | Mitsubishi Nuclear Fuel Co. | Fuel rod support grids for fuel assembly |
| US6714619B2 (en) * | 2001-08-07 | 2004-03-30 | Korea Atomic Energy Research Institute | Spacer grid with double deflected vanes for nuclear fuel assemblies |
| CN1820326A (en) * | 2004-03-25 | 2006-08-16 | 法玛通Anp有限公司 | Fuel assembly for a pressurize-water nuclear reactor |
| CN102568632A (en) * | 2012-03-02 | 2012-07-11 | 中科华核电技术研究院有限公司 | Screenwork for nuclear fuel component and mixing stick for screenwork |
| CN202948731U (en) * | 2012-12-20 | 2013-05-22 | 中国核动力研究设计院 | Positioning grillwork with blending property for nuclear fuel assembly |
| CN204332387U (en) * | 2014-12-05 | 2015-05-13 | 中科华核电技术研究院有限公司 | The fuel assembly mixing grillwork of the wing is mixed containing rectification type |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2553418A (en) | 2018-03-07 |
| GB2553418B (en) | 2020-09-09 |
| CN104485137A (en) | 2015-04-01 |
| WO2016086809A1 (en) | 2016-06-09 |
| GB201710630D0 (en) | 2017-08-16 |
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