CN206148144U - Lead base fast reactor quadrangle fuel assembly and fast neutron reactor who is used for thereof - Google Patents
Lead base fast reactor quadrangle fuel assembly and fast neutron reactor who is used for thereof Download PDFInfo
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- CN206148144U CN206148144U CN201621143327.5U CN201621143327U CN206148144U CN 206148144 U CN206148144 U CN 206148144U CN 201621143327 U CN201621143327 U CN 201621143327U CN 206148144 U CN206148144 U CN 206148144U
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- fuel
- turbogrid plates
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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 utility model discloses a lead base fast reactor quadrangle fuel assembly, this fuel assembly includes grating plant and fuel rod, wherein, grating plant is the quadrangle, has seted up opening and centre gripping hole on it, and per four opening evenly distributed are around a centre gripping hole, and per four centre gripping hole evenly distributed are around an opening to, the distance of evenly distributed between four centre gripping holes around the opening equals, is the square and arranges, grating plant has parallel a plurality of and of each other to arrange, the fuel rod has parallel a plurality of and of each other to arrange, and wherein, every fuel rod all passes the whole grating plant's on the fuel assembly a centre gripping hole in proper order to the position of fixed fuel rod, furtherly does not set up the sleeve in every fuel assembly outside, makes the cooling agent between the adjacent fuel assembly can free flow, thus the cooling agent carries out the active natural circulation's of non - ability when having strengthened improper shut -down.
Description
Technical field
The utility model is related to nuclear power field, more particularly to it is a kind of can be used in fast neutron reactor can reduce cooling
Agent flow resistance, the quadrangle fuel assembly for improving nuclear reactor safety.
Background technology
In current nuclear power station, great majority use light water reactor.Light water reactor with uranium -235 as fuel, but due to natural
Uranium -235 about only accounts for 0.7% in uranium reserve, and 99.3% is uranium -238, and fission is less likely to occur uranium -238, so can not
Fuel as light water reactor, fast neutron reactor makees fuel without uranium -235 with plutonium -239, but in reactor fuel plutonium -239
Peripheral renewing zone in place uranium -238.Plutonium -239 produces the fast neutron released during fission reaction, is installed in peripheral renewing zone
Uranium -238 absorb, uranium -238 will quickly become plutonium -239.So, plutonium -239 is fissioned, while energy is produced, and constantly
Uranium -238 is become available fuel plutonium -239 by ground, and because reactor relies primarily on fast-neutron fission energy is produced, so this anti-
Heap is answered also known as " fast neutron reactor ", if transformation ratio is more than 1, referred to as fast breeder.
At present the fuel assembly of existing fast neutron reactor is typically by a hexagon outer tube and fuel bundle group
Into with the intensive grid arrangement of equilateral triangle in hexagon outer tube, component lower end perforate, cooling agent flows from lower to upper fuel rod
It is dynamic.Such arrangement causes cooling agent share less, and cooling agent resistance when each component internal flows is larger, no
Beneficial to the derivation of reactor core heat.
Conventional fast reactor designs the design frequently with " swimming pool ", although this design is relatively safe, together
When increased construction cost.
Now the most reactors in operation are all thermal reactors, and they are designed using secondary circuit, one
Loop is reactor core and cooling agent part, in being included in closed pressure vessel, produces heat by coolant heating, the cooling of flowing
Agent and the water coke slurry heat of secondary circuit, water becomes water vapour and steam turbine is done work so that steam turbine generator generates electricity.
The pool reactor, also known as pool reactor, is a kind of experiment reaction being arranged on reactor core in pond
Heap.Generally pond depth 6-10m, with enriched uranium fuel is made, and reactor core is placed in bottom of pond or is suspended in pond, and latter event reactor core can be in pond
Interior movement, thus gain the name.Cooling agent can be held in pond, is poured in the side and bottom in pond and is inoculated with loaded concrete shield layer.
What sodium-cooled fast reactor was used is exactly this design, due to the chemical property of sodium it is active, and water can occur it is violent
Reaction, it is necessary to increase an intermediate heat transfer loop, devise three loop heat transfer systems.Primary Ioops are heap core segment and Liquid Sodium,
It is that Liquid Sodium and Liquid Sodium carry out heat transfer in secondary circuit, three loops are Liquid Sodium and water coke slurry heat, and final water becomes water
Steam does work to steam turbine so that steam turbine generator generates electricity, but structure is excessively complicated, and production and construction cost is huge.Due to upper
Reason is stated, the present inventor has made intensive studies to the fuel assembly of existing fast neutron reactor, can solve to design
Certainly the New-type fuel component of the problems referred to above and reactor core corresponding with component are designed.
Utility model content
In order to overcome the problems referred to above, the utility model people studied, and designs a kind of lead base fast reactor quadrangle fuel
Component, wherein using the higher lead of atomic number or lead-bismuth alloy as cooling agent, enrichment is 15%～30%
UO2Fuel, or (Pu-30%, U-70%) O2Fuel (plutonium uranium oxide fuel combination), so as to both can guarantee that system safety, also
Energy can be obtained in the case of simple structure, low cost and uranium -238 is become into available fuel plutonium -239；Specifically, should
Fuel assembly includes Turbogrid plates and fuel rod, and fuel rod has multiple, fixed by Turbogrid plates, wherein, the Turbogrid plates are in quadrangle,
Preferably square, offers thereon opening and clamping hole, reduces as far as possible while fixed fuel rod and cooling agent is flowed
Obstruction, be not provided with sleeve outside each fuel assembly so that the cooling agent between consecutive fuel component can freely flow
It is dynamic, so as to complete the utility model.
Specifically, the purpose of this utility model is to provide a kind of lead base fast reactor quadrangle fuel assembly, the fuel stack
Part includes Turbogrid plates 1 and fuel rod 2,
Wherein, the Turbogrid plates 1 are in quadrangle, and opening 3 and clamping hole 4 are offered thereon,
The fuel rod 2 passes through the clamping hole 4.
Wherein, on the Turbogrid plates 1, it is uniformly distributed in per four openings 3 around a clamping hole 4, presss from both sides per four
Hold hole 4 to be uniformly distributed in around an opening 3.
Wherein, the distance between four clamping holes 4 being uniformly distributed in around an opening 3 are equal, it is preferable that described
The square arrangement of central point in four clamping holes 4, opening 3 is centrally located at the square center.
Wherein, the distance between four openings 3 being uniformly distributed in around a clamping hole 4 are equal, it is preferable that described
The square arrangement of central point of four openings 3, clamping hole 4 is centrally located at the square center.
Wherein, multiple Turbogrid plates 1 and Duo Gen fuel rods 2 are included in the fuel assembly, wherein, two neighboring Turbogrid plates
Between there is setpoint distance, fuel rod 2 sequentially passes through all multiple Turbogrid plates 1.
Wherein, support column 6 is provided between two adjacent Turbogrid plates 1,
Preferably, the support column has four,
It is further preferred that the support column is affixed at clamping hole with Turbogrid plates.
Wherein, without sleeve outside the fuel assembly, the cooling agent between consecutive fuel component is interconnected.
Wherein, the Turbogrid plates 1 are selected from first kind Turbogrid plates, Equations of The Second Kind Turbogrid plates and combinations thereof, wherein：
In the first kind Turbogrid plates, the opening 3 and clamping hole 4 are circular hole, in the inwall in the clamping hole 4
On be provided with projection 41 for clamping fuel rod, raised 41 top is connected on the outer wall of fuel rod 2.
In the Equations of The Second Kind Turbogrid plates, the opening 3 passes through in annular shape between adjacent circular opening 3
Connection quarter butt 31 is connected, and four openings 3 of square arrangement and connection quarter butt 31 adjacent two-by-two collectively form irregular shape
The clamping hole 4 of shape, the fuel rod is held in the hole, and fuel rod outer wall is abutted against with the outer wall of circular opening 3.
Wherein, lead base fast reactor quadrangle fuel assembly as described above is installed in the reactor,
Preferably, the cooling agent in the reactor is liquid metal or liquid lead bismuth alloy.
Cooling agent employed in the utility model is metal or lead bismuth alloy (plumbum-based material), and their chemistry is steady
Qualitative height, it is weak with air and water reactivity, the safety problems such as on fire and blast are avoided compared with sodium-cooled fast reactor, in can saving
Between loop design, reduce build and maintenance cost.Meanwhile, the heat-carrying capacity and natural-circulation capacity of plumbum-based material are strong, can be according to
Residual heat of nuclear core is discharged by Natural Circulation, the passive safety of reactor is substantially increased.
Specifically, lead is cold or lead bismuth cooling fast reactor in fuel assembly adopt the quadrangle fuel assembly, it is and existing
Compare in hexagon thimble assembly used, it is first, simple in manufacture view technics comparing, it is not necessary to inside sleeve pipe and tube wall
Structure is finished, secondly, when cooling agent is cooled down to the Quadrilateral assembly, because fuel assembly outside is without sleeve
Parcel, cooling agent belongs to open interactive circulation, not only can reduce coolant flow dynamic resistance, improves the use longevity of circulating pump
Life, can also reduce local heating's non-uniform phenomenon, improve component and heap inner structure material lifetime, can also strengthen improper shutdown
When cooling agent carry out the ability of passive natural circulation.
In addition, metal or lead bismuth alloy (plumbum-based material) for neutron absorption and moderating power it is all weaker, split
Become the fast neutron that reaction produces and ensure that uranium -238 is changed into the plutonium -239 of easy fission and proceeds nuclear fission reaction and release
Energy, while ensureing the multiplication capacity of nuclear fuel；Fast neutron can also promote the horizontal material of high radioactivity in reactor spentnuclear fuel
Transmuting, can be only achieved the time for needing hundreds thousand of years even more long originally and is changed into radiation in the material short time of harmless level
Property level is low, environmental sound material so that reactor system has higher nuke rubbish transmuting and Nuclear fuel breeding ability.
Description of the drawings
Turbogrid plates on the lead base fast reactor quadrangle fuel assembly that Fig. 1 illustrates according to a kind of preferred embodiment of the utility model
Overall structure diagram；
The first kind on the lead base fast reactor quadrangle fuel assembly that Fig. 2 illustrates according to a kind of preferred embodiment of the utility model
The schematic enlarged-scale view of Turbogrid plates；
Equations of The Second Kind on the lead base fast reactor quadrangle fuel assembly that Fig. 3 illustrates according to a kind of preferred embodiment of the utility model
The schematic enlarged-scale view of Turbogrid plates；
Fig. 4 illustrates the lead base fast reactor quadrangle fuel assembly overall structure according to a kind of preferred embodiment of the utility model
Schematic diagram.
Drawing reference numeral explanation：
1- Turbogrid plates
2- fuel rods
3- openings
31- connects quarter butt
4- clamps hole
41- is raised
5- involucrums
6- support columns
Specific embodiment
The utility model is further described below by drawings and Examples.By these explanations, this practicality is new
The characteristics of type and advantage will become more apparent from clearly.
Here special word " exemplary " means " being used as example, embodiment or illustrative ".Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings
In terms of kind, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
According to the utility model provide a kind of lead base fast reactor quadrangle fuel assembly, as shown in Figure 1, Figure 2 with shown in Fig. 3,
The fuel assembly includes Turbogrid plates 1 and fuel rod 2, wherein, the Turbogrid plates 1 are in quadrangle, and opening 3 and folder are offered thereon
Hole 4 is held, the fuel rod 2 passes through the clamping hole 4.Preferably, the opening 3 and clamping hole 4 are all median perpendiculars in grid
The through hole of panel plate face.Cooling agent in reactor can flow through the opening, so as to pass through Turbogrid plates.
Lead base is referred to and closed with lead bismuth alloy or lead in lead base fast reactor quadrangle fuel assembly described in the utility model
Used as cooling agent, the fast reactor refers to the reactor for mainly being released energy by fast neutron induced fission, institute in the utility model to gold
The fuel assembly stated is all referring to for the lead base fast reactor quadrangle fuel assembly.
In one preferred embodiment, the Turbogrid plates are rectangle, preferably square, the clamping for opening up thereon
Hole is also to arrange according to quadrate array, so that the fuel rod in fuel assembly is arranged according to quadrate array,
Specifically, the fast pile component fuel rod of tradition adopts hexagonal array, this fuel rod arrangement mode and square arrangement mode
Compare, than comparatively dense, by calculating, the fuel rod of same diameter is arranged according to identical interrod spacing, for example, be mentioned below
13 × 13 arrangements, the fuel rod proportion that arrangement mode in hexagon component press in unit area is 63%, square group
Fuel rod proportion is 55% in part.Therefore, the space for removing outside fuel rod in square shaped module is bigger, leaves cooling agent for
Share also accordingly increase, maximum can reach 45%, and compared with original cooling agent, share improves about 8%, the stream of cooling agent
Dynamic space also accordingly increases, and these improvement are all conducive to the derivation of reactor core heat.
The fuel assembly provided in the utility model is applied in lead base fast reactor, is to employ the characteristics of lead base fast reactor
The design of container type, rather than the design of " swimming pool " formula, accordingly, it is desirable to fuel assembly, cooling agent have well
Heat conductivility, and the characteristic of violent chemical reaction will not occur with empty gas and water, and the no set provided in the utility model
The quadrangle fuel assembly of cylinder has the little feature of coolant flow dynamic resistance in the case of major accident, and cooling agent also has handle in time
The ability that heat is taken away such that it is able to make reactor that there is non-passive safety characteristic, so that the fast reactor can be in structure letter
Energy is obtained in the case of single, low cost and uranium -238 is become into available fuel plutonium -239.
Opening 3 described in the utility model for the cooling agent in fuel assembly with passing through, and the cooling agent is preferred
For liquid metal or lead bismuth alloy, its diameter determines according to the dense degree that fuel rod in fuel assembly is arranged；It is described
Clamping hole 4, preferably to pass through for the fuel rod with involucrum 5, can be limited with passing through for fuel rod so as to clamp hole
The position that fuel rod is located, the fuel rod 2 described in the utility model generally refers to fuel pellet and its outside coats sealing
Involucrum 5；Fuel rod 2 described in the utility model is the common fuel rod in this area, and this is not made in the utility model
It is particularly limited to, is 7.4mm, bag such as from fuel pellet diameter when the utility model is implemented from conventional fuel rod
The fuel rod that shell internal diameter is 7.7mm, external diameter is 8.2mm, the length of the fuel rod is preferably 3m.
In one preferred embodiment, as shown in Figure 1, Figure 2 hole and stream are clamped on the Turbogrid plates 1 with shown in Fig. 3
Through hole spaced array is arranged, and is uniformly distributed in per four openings 3 around a clamping hole 4, hole 4 is clamped per four and is uniformly distributed
Around an opening 3, i.e., opening 3 and the clamping alternate intervals of hole 4 are arranged.Preferably, on a Turbogrid plates 1, own
Clamping hole spacing each other it is equal.
It is further preferred that the distance between four clamping holes 4 being uniformly distributed in around an opening 3 are equal, it is excellent
Selection of land, it is described four clamping hole 4 the square arrangements of central point, will four clamping holes centers be regarded as a point respectively,
Then this four points are sequentially connected and can obtain a square；Be uniformly distributed in one clamping hole 4 around four openings 3 it
Between distance it is equal, it is preferable that the square arrangement of central point of four openings 3, clamping hole 4 be centrally located at the pros
Shape center.
In one preferred embodiment, it is provided with the fuel assembly multiple with shown in Fig. 3 as shown in Figure 1, Figure 2
Turbogrid plates 1 parallel to each other and multiple fuel rods 2 parallel to each other, have setpoint distance between two neighboring Turbogrid plates, wherein,
Each fuel rod 2 sequentially passes through the multiple Turbogrid plates 1 of whole on fuel assembly,.
In one preferred embodiment, as shown in Figures 2 and 3, involucrum 5 is provided with outside the fuel rod 2,
The involucrum of the fuel rod and its outside all passes through the clamping hole 4.The involucrum 5 is the sealing shell of nuclear fuel, its effect
It is to prevent fission product loss and avoid fuel from being corroded and effectively derived heat energy by cooling agent.
In one preferred embodiment, as shown in Figures 2 and 3, it is provided between two adjacent Turbogrid plates 1
Support column 6.Preferably, the support column between two adjacent Turbogrid plates 1 has four, it is preferable that each described support column
Affixed at clamping hole with Turbogrid plates, i.e., four support columns are respectively and fixedly connected with and are clamped on hole in four, such as through clamping hole or weldering
It is connected on clamping hole, and four support columns/square arrangement in clamping hole, the clamping hole affixed with support column no longer accommodates combustion
Charge bar, i.e., pass through without fuel rod.
Specifically, the size of the support column can be slightly larger than the internal diameter size in clamping hole, so as to support column can not be stretched
Enter in clamping hole, support column is welded on the outside in clamping hole；The size of the support column can also be pressed from both sides equal to or slightly less than
The internal diameter size in hole is held, so as to support column can be extend in clamping hole, so as to support column is welded on the inwall in clamping hole,
All there are four support columns between per two adjacent Turbogrid plates, i.e., be both provided with supporting positioned at the both sides of middle Turbogrid plates
Post, when the size of support column equal to or slightly less than clamps the internal diameter size in hole, propping up positioned at the both sides of middle Turbogrid plates
Dagger can be that one, i.e. support column pass through one layer of Turbogrid plates, and the Turbogrid plates and adjacent two-layer Turbogrid plates are consolidated,
By that analogy, the multilayer Turbogrid plates of fuel assembly can connect into an entirety by one group or multigroup support column, described one group
Support column refers to four support columns being located at respectively near four clamping holes.
In one preferred embodiment, without shell outside the fuel assembly, between consecutive fuel component
Cooling agent is interconnected, and when multiple fuel assemblies are arranged side by side, cooling agent fully can circulate between consecutive fuel component,
Can also pass through fuel assembly on opening along fuel rod bearing of trend flow, between fuel assembly without sleeve every
From cooling agent carries out the ability of passive natural circulation when enhancing improper shutdown, that is, improve cooling agent Natural Circulation energy
Power, so as to improve security.
In one preferred embodiment, each fuel assembly includes multiple Turbogrid plates 1, it preferably includes 8-11
Turbogrid plates, most preferably including 9 Turbogrid plates, as shown in Figure 4, the position of opening on each Turbogrid plates is consistent.
The thickness of each Turbogrid plates is 18-30mm, preferably 26mm；The top surface of each Turbogrid plates is square, its
The length of side is 120mm-130mm, it is therefore preferable to 126mm；Multiple clamping holes 4, and multiple clampings are offered on each Turbogrid plates
The square arrangement in hole 4, its arranging rule can be 9 × 9,10 × 10,11 × 11,12 × 12,13 × 13,14 × 14 etc.,
Preferably 11 × 11 or 13 × 13；Clamping hole 4 formed by square pattern while with square grid plate while put down respectively
OK, in the component of 11 × 11 arrangements, fuel interrod spacing is 11.5mm；In the component of 13 × 13 arrangements, fuel interrod spacing (folder
Hold hole pitch-row) it is 9.7mm；When the clamping hole 4 is opened up according to 11 × 11 arranging rule, clamping hole is opened up altogether
, 117 fuel rods are may be inserted into thereon, because have near four clamping holes and being provided with support column 6 and can not insert fuel by 121
Rod.
Wherein it is preferred to, in the region near nuclear reactor center clamping hole 4 is configurated than sparse Turbogrid plates,
In order to improve the cooling agent exchange capability of heat of central area；
In one preferred embodiment, the Turbogrid plates 1 are selected from first kind Turbogrid plates, Equations of The Second Kind Turbogrid plates and its group
Close；Specifically,
First kind Turbogrid plates can be only included in fuel assembly, or
Equations of The Second Kind Turbogrid plates can also be only included in fuel assembly, or
First kind Turbogrid plates and Equations of The Second Kind Turbogrid plates can also be included in fuel assembly.
Preferably, two kinds of Turbogrid plates are used alternatingly the structural strength that can either improve fuel assembly, additionally it is possible to appropriate adjustment
The circulation path of cooling agent, eliminates the dead angle that cooling agent does not circulate.
In one preferred embodiment, as shown in Figure 2, opening 3 and clamping on the first kind Turbogrid plates
Hole 4 is circular hole, and raised 41 are provided with the inwall in the clamping hole 4, and raised 41 top is connected to fuel rod 2
On outer wall, it for clamping fuel rod, i.e. first kind Turbogrid plates is by raised fixed fuel rod that the projection is.It is preferred that
Ground, in first kind Turbogrid plates, clamps the external diameter of the internal diameter more than fuel rod 2 in hole, and the internal diameter in the clamping hole is 8-10mm, raised
Height be 0.3-0.5mm；Specific size sets as the case may be, when involucrum external diameter is 8.2mm, clamps the internal diameter in hole
For 9mm, the raised height is 0.4mm；It is further preferred that the projection has multiple, it is distributed on the inwall in clamping hole,
Six projections are most preferably set；Suitably open up more clamping hole on the first kind Turbogrid plates, such as according to 13 × 13 arrangement
Mode opens up clamping hole；
Preferably, the projection is in hemispherical or is semicircular strip in section.
In one preferred embodiment, as shown in Figure 3, in the Equations of The Second Kind Turbogrid plates, the opening 3 is in
Annular shape, is connected, two-by-two four of adjacent square arrangement between adjacent circular opening 3 by connection quarter butt 31
Opening 3 collectively forms erose clamping hole 4 with its connection quarter butt 31 is connected, and the fuel rod is held on the hole
In, the outer wall of the circular opening 3 is abutted with the outer wall of the fuel rod 2, between fuel rod and the clamping hole 4
Circulate cooling agent in space.Suitably open up less clamping hole on the Equations of The Second Kind Turbogrid plates, such as according to 11 × 11 arrangement mode
Open up clamping hole；The internal diameter of the circular opening 3 is 4-5mm, and external diameter is 7-9mm, and the width for connecting quarter butt is 1.2-
2mm；Specific size can set as the case may be, such as when clamping hole is opened up according to 11 × 11 arrangement mode, fuel
Interrod spacing is 11.5mm, and the internal diameter of circular opening 3 is 4.6mm on Turbogrid plates, and external diameter is 8mm, and the width for connecting quarter butt is
1.5mm。
Above two Turbogrid plates can reduce contact of the involucrum with Turbogrid plates while fixed fuel rod position, keep away
Exempt from hot-spot and cause can burst, improve the life-span of fuel rod, reduce whole component and the fuel sheath failure in reactor core
Rate.
Multiple hole, such as opening and clamping hole, in the clamping hole after intercalating dye rod, clamping are offered on Turbogrid plates
Hole will not be completely filled with by fuel rod, and the total opening area that can also leave certain space, the space and opening is bigger, grid
Panel is less for the obstruction of cooling agent, i.e., described clamping hole is used not only for restriction, fixed fuel rod, also together with opening
For cooling agent circulation, reduce the obstruction that Turbogrid plates circulate to cooling agent.
According to a kind of fast neutron reactor that the utility model is provided, it is provided with the reactor multiple as described above
Lead base fast reactor quadrangle fuel assembly, can circulate, it is preferable that the reactor between each described fuel assembly for cooling agent
In cooling agent be liquid metal or lead bismuth alloy, select metal or lead bismuth alloy to be mainly them as cooling agent
With preferable chemical property, i.e., inviolent with the generation of empty gas and water chemical reaction, while with the good capacity of heat transmission, energy
High power density (100～300W/cm that in time fission of cooling fuel is produced3) heat；They will not be carried out excessively to neutron
Slowing down, can keep whole reactor core that there is the characteristic of fast neutron spectrum.
Above in association with being preferred embodiment illustrated to the utility model, but these embodiments are only models
Example property, only play illustrative effect.On this basis, various replacements and improvement can be carried out to the utility model, these
Each fall within protection domain of the present utility model.
Claims (9)
1. a kind of lead base fast reactor quadrangle fuel assembly, it is characterised in that the fuel assembly includes Turbogrid plates (1) and fuel rod
(2),
Wherein, the Turbogrid plates (1) offer thereon opening (3) and clamping hole (4) in quadrangle,
The fuel rod (2) is through the clamping hole (4).
2. fuel assembly according to claim 1, it is characterised in that
On the Turbogrid plates (1), it is uniformly distributed in per four openings (3) around clamping hole (4), hole is clamped per four
(4) it is uniformly distributed in around an opening (3).
3. fuel assembly according to claim 2, it is characterised in that
The distance between four clampings hole (4) being uniformly distributed in around an opening (3) are equal, it is preferable that described four
The square arrangement of central point of clamping hole (4), opening (3) is centrally located at the square center.
4. fuel assembly according to claim 2, it is characterised in that
The distance between four openings (3) being uniformly distributed in around clamping hole (4) are equal, it is preferable that described four
The square arrangement of central point of opening (3), clamping hole (4) is centrally located at the square center.
5. fuel assembly according to claim 1, it is characterised in that
Include multiple Turbogrid plates (1) and many fuel rods (2) in the fuel assembly, wherein, between two neighboring Turbogrid plates
With setpoint distance, fuel rod (2) sequentially passes through all multiple Turbogrid plates (1).
6. fuel assembly according to claim 5, it is characterised in that
Support column (6) is provided between two adjacent Turbogrid plates (1),
The support column has four,
The support column is affixed at clamping hole with Turbogrid plates.
7. fuel assembly according to claim 1, it is characterised in that
Without sleeve outside the fuel assembly, the cooling agent between consecutive fuel component is interconnected.
8. fuel assembly according to claim 1, it is characterised in that
The Turbogrid plates (1) selected from first kind Turbogrid plates, Equations of The Second Kind Turbogrid plates and combinations thereof, wherein：
In the first kind Turbogrid plates, the opening (3) and clamping hole (4) are circular hole, in the interior of the clamping hole (4)
The projection (41) for clamping fuel rod is provided with wall, is connected on the outer wall of fuel rod (2) at the top of the projection (41)；
In the Equations of The Second Kind Turbogrid plates, the opening (3) passes through in annular shape between adjacent circular opening (3)
Connection quarter butt (31) is connected, and four openings (3) of square arrangement and connection quarter butt (31) adjacent two-by-two collectively form not
The clamping hole (4) of regular shape, the fuel rod is held in the hole, the outer wall of fuel rod outer wall and circular opening (3)
Abut against.
9. a kind of fast neutron reactor, it is characterised in that
Install in the reactor just like the lead base fast reactor quadrangle fuel assembly described in claim 1-8,
Cooling agent in the reactor is liquid metal or liquid lead bismuth alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143327.5U CN206148144U (en) | 2016-10-20 | 2016-10-20 | Lead base fast reactor quadrangle fuel assembly and fast neutron reactor who is used for thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143327.5U CN206148144U (en) | 2016-10-20 | 2016-10-20 | Lead base fast reactor quadrangle fuel assembly and fast neutron reactor who is used for thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967949A (en) * | 2016-10-20 | 2018-04-27 | 华北电力大学 | Lead base fast reactor quadrangle fuel assembly and its fast neutron reactor being used for |
| CN108320829A (en) * | 2017-12-27 | 2018-07-24 | 中核四0四有限公司 | A kind of recovery and treatment method of MOX pellets waste material |
| CN108389633A (en) * | 2018-01-29 | 2018-08-10 | 岭东核电有限公司 | Fuel assembly fixed structure and its bogey |
| CN110926562A (en) * | 2019-12-16 | 2020-03-27 | 西安交通大学 | Top end positioning piece suitable for flow measurement of rod bundle sub-channel outlet |
| WO2023070883A1 (en) * | 2021-10-27 | 2023-05-04 | 中广核研究院有限公司 | Plate-type fuel assembly and reactor core |
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2016
- 2016-10-20 CN CN201621143327.5U patent/CN206148144U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967949A (en) * | 2016-10-20 | 2018-04-27 | 华北电力大学 | Lead base fast reactor quadrangle fuel assembly and its fast neutron reactor being used for |
| CN108320829A (en) * | 2017-12-27 | 2018-07-24 | 中核四0四有限公司 | A kind of recovery and treatment method of MOX pellets waste material |
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