CN106531231A - Fuel assembly and clamping device thereof - Google Patents
Fuel assembly and clamping device thereof Download PDFInfo
- Publication number
- CN106531231A CN106531231A CN201611093690.5A CN201611093690A CN106531231A CN 106531231 A CN106531231 A CN 106531231A CN 201611093690 A CN201611093690 A CN 201611093690A CN 106531231 A CN106531231 A CN 106531231A
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- CN
- China
- Prior art keywords
- clamping
- clamping device
- elastic arm
- border
- gripping channel
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- 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
- G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to a fuel assembly and a clamping device thereof. The clamping device comprises a clamping assembly, wherein clamping channels allowing fuel rods to penetrate are formed in the clamping assembly; at least two clamping mechanisms for clamping different axial positions of the fuel rods penetrating the clamping channels are arranged on the clamping assembly; each clamping mechanism comprises at least one bulge and at least one elastic arm which are used for clamping the corresponding fuel rod; the bulges and the elastic arms of each clamping mechanism are staggered on the circumferential ring of the corresponding clamping channel, and the bulges and the elastic arms of at least one clamping mechanism are staggered with bulges and elastic arms of the other clamping mechanisms on the circumferential rings of the clamping channels. The bulges and the elastic arms of the different clamping mechanisms are staggered on the circumferential rings, so that the elastic arms and the bulges are stressed on different sides of the fuel rods, when the elastic arms loosen, the positions of the fuel rods are limited by means of staggered arrangement of the bulges, horizontal displacement of the fuel rods during vibration is suppressed effectively, the risk caused by deviation shaking of the fuel rods when the elastic arms fail is reduced, and additional abrasion of the fuel rods caused by lateral clearance is prevented.
Description
Technical field
The present invention relates to nuclear power fuel component, more particularly, it relates to a kind of fuel assembly and its clamping device.
Background technology
Fuel assembly structure is made up of rigid backbone and fuel rod 3, as shown in figure 1, fuel rod 3 is parallel in rigid backbone
Arrange and by even partition.Rigid backbone includes grid spacer 1, mixing grillwork 4, upper base 5, bottom nozzle 6 and guide pipe 7.Stir
Mixed screen work 4 and grid spacer 1 are made up of the regularly arranged lattice cell for accommodating and clamping fuel rod 3 respectively.1 He of grid spacer
Mixing grillwork 4 is arranged in the axially spaced-apart of fuel rod 3, wears positioning for fuel rod 3.Guide pipe 7 is longer than fuel rod 3, and which is from combustion
The end of 3 beam of charge bar is stretched, and is fixed on base 5 and bottom nozzle 6.Bottom nozzle 6 is located at the bottom of fuel assembly, has
Some supporting legs and an orifice plate, have some on orifice plate for fixed guide pipe 7 duct and coolant flow passages penetrate this
Orifice plate.The upper base 5 of the other end of fuel assembly, i.e. component upper end, including a horizontal up-hole plate, has one on up-hole plate
The up-hole plate is run through in a little ducts and discharge orifice accommodated with fixed guide pipe 7.Fuel assembly is located at the reactor core upper and lower plates of reactor
Between, the plate hole that coolant is reserved by core plate flows through fuel rod 3, takes away reaction heat.
Grid spacer 1 and mixing grillwork 4 are typically made up of interior band, outer band；Interior band arranged crosswise in length and breadth, and pass through
Fix to spot welding is carried out at cross；Outside interior band, interior band is welded and fixed outer strap arrangements with outer band lap-joint.
Interior band and outer bar take and are provided with raised 14, elastic arm 15, stir and make muddy the wing and guide vane etc., convex on grid spacer 1 and mixing grillwork 4
Rise 14 and elastic arm 15 constitute to fuel rod 3 clamping grasping system.
As shown in fig. 6, the grasping system of general fuel assembly, from fuel assembly axially from the point of view of, mixing grillwork 4 and positioning
Projection 14 on screen work 1 is entirely located in side, and the elastic arm 15 on mixing grillwork 4 and grid spacer 1 is then located at opposite side, from both sides
Fuel rod 3 is clamped in into centre.Run to the end of term in longevity in mixing grillwork 4 and grid spacer 1, elastic arm 15 can more or less occur pine
Relax.Under serious conditions, the distance of elastic arm 15 and projection 14 can be more than 3 external diameter of fuel rod, i.e. fuel rod 3 at least between the presence of side
Gap.So by external drive as when flowing over, fuel rod 3 can be aggravated with elastic arm 15, projection 14 in such gap to fuel rod 3
Between abrasion.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of improved fuel assembly and its clamping device.
The technical solution adopted for the present invention to solve the technical problems is：A kind of clamping device of fuel assembly is constructed, is wrapped
Clamp assemblies are included, the gripping channel worn for fuel rod on the clamp assemblies, is formed with；
The clamp assemblies are provided with the axially distinct position of the fuel rod to being arranged in the gripping channel and carry out
At least two groups clamping devices of clamping, each clamping device include that to fuel rod clamping at least one is raised and extremely
A few elastic arm；
The projection and elastic arm of each clamping device staggers on the border of the gripping channel setting, least one set institute
The projection and elastic arm of clamping device are stated respectively with the projection and elastic arm of clamping device other described in the border of the gripping channel
On stagger setting.
Preferably, the projection (14) of each clamping device and elastic arm (15) are on the border of the gripping channel
Stagger 180 ° and arrange.
Preferably, each clamping device includes two groups of grip units, and two groups of grip units are in the gripping channel
Stagger on border 90 ° and arrange, per group of grip unit is included on the border of the gripping channel the convex of 180 ° of setting of staggering
Rise and elastic arm.
Preferably, each clamping device include the same side for corresponding fuel rod against two it is raised, it is described
Two projections are arranged in axially spaced-apart, and the axial location of the elastic arm of the corresponding clamping device is located at described two projections
Between.
Preferably, clamping device described in least one set with clamping device described in another group on the border of the gripping channel
Stagger and arrange 180 °.
Preferably, clamping device described in axially adjacent two groups staggers on the border of the gripping channel setting.
Preferably, clamping device described in axially adjacent two groups staggers 180 ° on the border of the gripping channel.
Preferably, the clamp assemblies include at least two screen works of axially spaced-apart arrangement, and the screen work includes at least two
Individual the first band and at least two being arranged side by side that is spaced in the first direction is spaced the Article 2 being arranged side by side in a second direction
Band, first band, second strip are arranged in a crossed manner to form the clamping hole that clamping is worn for the fuel rod, each clamping hole
Medial wall is provided with the middle part of the clamping hole the raised and elastic arm for arranging.
Preferably, two adjacent described first take and be provided with projection, elastic arm into the same clamping hole respectively；
And/or, projection, elastic arm are provided with into the same clamping hole respectively in the two adjacent second strips.
Preferably, on the gripping channel, different sections are divided at least two gripping sections, each gripping section correspondence vertically
One clamping group is set, and each clamping group includes one or more clamping devices, including multiple clamping devices respectively
The each described clamping device of the clamping group is arranged side by side, and does not stagger on the border of the gripping channel, two adjacent institutes
State clamping group to stagger on the border of gripping channel setting.
The present invention also constructs a kind of fuel assembly, including described clamping device.
Implement the fuel assembly and its clamping device of the present invention, have the advantages that：The present invention fuel assembly and
Its clamping device is staggered on the border of gripping channel setting by the projection and elastic arm that make different clamping devices, allows fuel rod
Homonymy does not have elastic arm and raised stress, accordingly even when elastic arm occurs to relax, realizes fuel by upper lower convexity dislocation arrangement
The limit function of rod, lateral displacement during fuel rod vibration are also effectively suppressed, fuel rod off normal when reduction is failed by elastic arm
The risk for causing is rocked, prevents lateral clearance from causing the extra abrasion of fuel rod.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the fuel assembly in the embodiment of the present invention；
Fig. 2 is the sectional perspective structural representation of the screen work in Fig. 1；
Fig. 3 is that the screen work in Fig. 2 passes the direction view of bowing when being provided with fuel rod；
Overall schematic when Fig. 4 is the projection and elastic arm clamping fuel rod of each screen work in the embodiment of the present invention；
Fig. 5 is arrangement schematic diagram of gripping channel when axially upper each clamping group includes two groups and above clamping device；
Overall schematic when Fig. 6 is the projection and elastic arm clamping fuel rod of each screen work in background technology.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now compare accompanying drawing and describe in detail
The specific embodiment of the present invention.
As shown in figure 1, the fuel assembly in a preferred embodiment of the invention is made up of rigid backbone and fuel rod 3, combustion
Charge bar 3 is arranged in parallel in rigid backbone and by even partition.Rigid backbone includes some screen works 10, upper base 5, bottom nozzle 6
With guide pipe 7.Screen work 10 generally includes grid spacer 1, mixing grillwork 4, and each screen work 10 is respectively by regularly arranged for accommodating
With the lattice cell composition of clamping fuel rod 3.Screen work 10 is arranged in the axially spaced-apart of fuel rod 3, wears positioning for fuel rod 3.It is oriented to
Pipe 7 is longer than fuel rod 3, and which is stretched from the end of 3 beam of fuel rod, and is fixed on base 5 and bottom nozzle 6.Bottom nozzle 6
In the bottom of fuel assembly, with some supporting legs and an orifice plate, on orifice plate, there are some holes for fixed guide pipe 7
Road and coolant flow passages penetrate the orifice plate.The upper base 5 of the other end of fuel assembly, i.e. component upper end, including one laterally
Up-hole plate, have on up-hole plate some accommodate and fixed guide pipe 7 ducts and discharge orifice run through the up-hole plate.Fuel assembly position
Between the reactor core upper and lower plates of reactor, the plate hole that coolant is reserved by core plate flows through fuel rod 3, takes away reaction heat.
As shown in Figures 2 and 3, first band 11 of each screen work 10 including some settings that are intervally arranged in the first direction
Be intervally arranged the second strip 12 of setting in a second direction, and the formation arranged in a crossed manner of the first band 11, second strip 12 supplies fuel
Multiple lattice cells that rod 3 wears, the corresponding hole of each lattice cell form the clamping hole 13 for passing through to fuel rod 3 and clamping.Each screen work 10
Interval sets in the axial direction, and each screen work 10 is formed with 3 corresponding clamping hole 13 of same fuel rod and led to for the clamping that fuel rod 3 wears
Road.
In certain embodiments, the medial wall in each clamping hole 13 is provided with the middle part of clamping hole 13 14 He of projection for arranging
Elastic arm 15, the projection 14 and elastic arm 15 on each screen work 10 combine and fuel rod 3 are clamped, and form the clamping group to the clamping of fuel rod 3
Part.On axial direction, the axially distinct position clamping respectively to fuel rod 3 of each screen work 10 of diverse location, forms logical to being arranged in clamping
Two groups and clamping device more than two that the axially distinct position of the fuel rod 3 in road is clamped.
The projection 14 and elastic arm 15 of each clamping device staggers on the border of gripping channel setting, the week to fuel rod 3
Circle diverse location is clamped.Preferably, the projection 14 and elastic arm 15 of each clamping device staggers on the border of gripping channel
180 ° of settings.One group of the projection 14 and the formation of elastic arm 15 arranging 180 ° of staggering on the border of gripping channel to fuel rod 3 two
The grip unit of opposite side clamping.Preferably, the first band 11, second strip 12 are mutually perpendicular to, and form square lattice cell hole,
In other embodiment, lattice cell hole is alternatively the other shapes such as circle, rhombus.The projection 14 and elastic arm 15 of one group of grip unit is distinguished
It is arranged on the first adjacent band 11, the fuel rod 3 between two first adjacent bands 11 is clamped.
As shown in figure 4, further, in order to ensure the equilibrium of stress, two groups of axially adjacent clamping devices are logical in clamping
Stagger on the border in road setting.Preferably, two groups of axially adjacent clamping devices stagger 180 ° on the border of gripping channel, allow
The both sides of fuel rod 3 alternate with projection 14 and elastic arm 15 is clamped, and make the stress of fuel rod 3 more balanced, even if there is part elastic arm
15 have deformation failure, and the off normal for also not resulting in fuel rod 3 is rocked, and limit 3 Oscillation Amplitude of fuel rod as far as possible,
Prevent lateral clearance from causing the extra abrasion of fuel rod 3, reduce involucrum abraded quantity, reduce the disclosure risk of fuel rod 3.
Further, when including multiple clamping devices more than two, axially distinct section can be divided into multiple folders
Section is held, each gripping section is correspondingly arranged a clamping group.Each clamping group can include a clamping device, may also comprise multiple
Clamping device, the quantity of the clamping device of each clamping group can be with identical, also can be different.As shown in figure 5, when each clamping group includes
During two or more sets clamping devices, each clamping device of the clamping group is arranged side by side, and does not stagger on the border of gripping channel,
Two adjacent clamping groups stagger on the border of gripping channel setting.
In other embodiments, the projection 14 and elastic arm 15 that also there may be one or more groups of clamping devices is pressed from both sides with other respectively
The projection 14 and elastic arm 15 for holding mechanism staggers on the border of gripping channel setting, allows the not ipsilateral of fuel rod 3 to have projection
14 and elastic arm 15 clamp, make the not homonymy of fuel rod 3 have elastic arm 15 and raised 14 stress, accordingly even when elastic arm 15 occurs pine
Relax, the limit function of fuel rod 3 is realized by the dislocation of upper lower convexity 14 arrangement, lateral displacement when fuel rod 3 vibrates also is obtained
To effectively suppression, when reduction is failed by elastic arm 15,3 off normal of fuel rod rocks the risk for causing, and prevents lateral clearance from causing fuel rod
3 extra abrasion.Preferably, one or more groups of clamping devices are staggered on the border of gripping channel with another group of clamping device and are set
180 ° are put, allows the two opposite sides of fuel rod 3 respectively to have projection 14 and elastic arm 15 to clamp.
Again as shown in Figures 2 and 3, further, in order to preferably ensure the clamping to fuel rod 3, each clamping device
Including two groups of grip units, two groups of grip units stagger on the border of gripping channel 90 ° and arrange, and one group of grip unit is convex
Rise 14 and elastic arm 15 be separately positioned on the first adjacent band 11, stagger on the border of gripping channel 180 ° and arrange, it is another
The projection 14 and elastic arm 15 of group grip unit is separately positioned in adjacent second strip 12, is staggered on the border of gripping channel
180 ° of settings, are clamped to fuel rod 3 from first direction, second direction both direction respectively.Preferably, the first band 11,
Two bands 12 are mutually perpendicular to, then two groups of grip units stagger on the border of gripping channel 90 ° and arrange.In other embodiments,
Each clamping device can also only include one group of grip unit.
Corresponding, the projection 14 and elastic arm 15 of one group of grip unit are respectively formed on two the first adjacent bands 11, and
Corresponding raised 14, elastic arm 15 is arranged into same clamping hole 13.When same clamping device includes two groups of clamping lists of 90 ° of dislocation
When first, the projection 14 of another group of grip unit, elastic arm 15 are then respectively formed in two adjacent second strips 12, and corresponding convex
Play 14, elastic arm 15 to arrange into same clamping hole 13, the formation of convenient projection 14 and elastic arm 15.When only one group grip unit
When, also raised 14 and elastic arm 15 can be set in adjacent second strip 12 only, in second strip 12, be not provided with raised 14 and bullet
Arm 15.
In certain embodiments, in order to ensure that it is steady that the projection 14 and elastic arm 15 of same grip unit are clamped to fuel rod 3
It is qualitative, one group of grip unit include the same side for corresponding fuel rod 3 against two projections 14, two projections 14 are in axial direction
Interval setting, and the axial location of the elastic arm 15 of corresponding grip unit is between two projections 14.Fuel rod 3 is convex by two
14 are played to support, elastic arm 15 exerts a force to fuel rod 3 between two projections 14, allow fuel rod 3 it is more stable be pressed together on projection
On 14.Multigroup clamping device on axial direction is shifted to install on the border of gripping channel, is being had elastic arm 15 to there is deformation or is being failed
When, fuel rod 3 can be supported clamping in the horizontal by the projection for axially going up diverse location, improve to the clamping of fuel rod 3
Stability, it is to avoid fuel rod 3 is produced and rocked, and reduces the abrasion of fuel rod 3.Accordingly, in other embodiments, same clamping
Unit can be one in the same side corresponding raised 14 of fuel rod 3 and 15 quantity of elastic arm, alternatively multiple.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (11)
1. a kind of clamping device of fuel assembly, it is characterised in that including clamp assemblies, is formed with the clamp assemblies for combustion
Charge bar（3）The gripping channel for wearing；
The clamp assemblies are provided with the fuel rod to being arranged in the gripping channel（3）Axially distinct position pressed from both sides
At least two groups clamping devices held, each clamping device are included to the fuel rod（3）At least one of clamping is raised
（14）With at least one elastic arm（15）；
The projection of each clamping device（14）And elastic arm（15）Stagger on the border of the gripping channel setting, at least one
The projection of the group clamping device（14）And elastic arm（15）Projection with clamping device other described respectively（14）And elastic arm（15）
Stagger on the border of the gripping channel setting.
2. the clamping device of fuel assembly according to claim 1, it is characterised in that each clamping device it is described
It is raised（14）And elastic arm（15）Stagger on the border of the gripping channel 180 ° and arrange.
3. the clamping device of fuel assembly according to claim 2, it is characterised in that each clamping device includes two
Group grip unit, grip unit described in two groups stagger on the border of the gripping channel 90 ° and arrange, per group of grip unit
The 180 ° of projections for arranging that stagger are included on the border of the gripping channel（14）And elastic arm（15）.
4. the clamping device of fuel assembly according to claim 1, it is characterised in that each clamping device includes supplying
The correspondence fuel rod（3）The same side against two it is raised（14）, described two projections（14）Arrange in axially spaced-apart, and
The elastic arm of the corresponding clamping device（15）Axial location be located at described two projections（14）Between.
5. the clamping device of the fuel assembly according to any one of Claims 1-4, it is characterised in that described in least one set
Clamping device is staggered on the border of the gripping channel with clamping device described in another group and arranges 180 °.
6. the clamping device of the fuel assembly according to any one of Claims 1-4, it is characterised in that axially adjacent two
The group clamping device staggers on the border of the gripping channel setting.
7. the clamping device of fuel assembly according to claim 6, it is characterised in that clamp described in axially adjacent two groups
Mechanism staggers 180 ° on the border of the gripping channel.
8. the clamping device of the fuel assembly according to any one of Claims 1-4, it is characterised in that the clamp assemblies
Including at least two screen works of axially spaced-apart arrangement（10）, the screen work（10）It is spaced in the first direction side by side including at least two
The first band for arranging（11）, and at least two be spaced the second strip being arranged side by side in a second direction（12）, described first
Band（11）, second strip（12）It is arranged in a crossed manner to be formed for the fuel rod（3）Wear the clamping hole of clamping（13）, each clamping hole
（13）Medial wall be provided with to the clamping hole（13）The projection that middle part is arranged（14）And elastic arm（15）.
9. the clamping device of fuel assembly according to claim 8, it is characterised in that two adjacent first bands
（11）It is upper respectively to the same clamping hole（13）Projection is provided with inside（14）, elastic arm（15）；And/or, two adjacent described
Two bands（12）It is upper respectively to the same clamping hole（13）Projection is provided with inside（14）, elastic arm（15）.
10. the clamping device of the fuel assembly according to any one of Claims 1-4, it is characterised in that the gripping channel
On vertically different sections be divided at least two gripping sections, each gripping section is correspondingly arranged a clamping group, each clamping group
Include one or more clamping devices respectively, including each described clamping device of the clamping group of multiple clamping devices is simultaneously
Row is arranged, and does not stagger on the border of the gripping channel, and the two adjacent clamping groups are wrong on the border of gripping channel
Open up and put.
11. a kind of fuel assemblies, it is characterised in that including the clamping device described in any one of claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093690.5A CN106531231B (en) | 2016-11-30 | 2016-11-30 | Fuel assembly and its clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093690.5A CN106531231B (en) | 2016-11-30 | 2016-11-30 | Fuel assembly and its clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106531231A true CN106531231A (en) | 2017-03-22 |
| CN106531231B CN106531231B (en) | 2018-05-22 |
Family
ID=58354270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611093690.5A Active CN106531231B (en) | 2016-11-30 | 2016-11-30 | Fuel assembly and its clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106531231B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242271A (en) * | 2021-11-05 | 2022-03-25 | 岭澳核电有限公司 | Fuel assembly and framework thereof |
| CN110534217B (en) * | 2019-09-09 | 2023-08-18 | 中国船舶重工集团公司第七一九研究所 | Spent fuel storage grillwork for ocean nuclear power platform |
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| CN86102919A (en) * | 1985-05-01 | 1986-11-05 | 西屋电气公司 | Have the nuclear fuel rod support grid that a plurality of nicks improve structure |
| US4631168A (en) * | 1983-09-30 | 1986-12-23 | Westinghouse Electric Corp. | Nuclear reactor fuel assembly with a removable top nozzle |
| EP0766262A1 (en) * | 1995-09-29 | 1997-04-02 | Siemens Aktiengesellschaft | Spacer grid for nuclear fuel elements having attached springs |
| US5732116A (en) * | 1995-06-29 | 1998-03-24 | Framatome | Spacer grid of a fuel assembly for a nuclear reactor, including attached springs |
| CN202948730U (en) * | 2012-12-20 | 2013-05-22 | 中国核动力研究设计院 | Grillwork with capacity of improving crowding effect of bottom bubble for nuclear fuel assembly |
| CN104021821A (en) * | 2014-06-20 | 2014-09-03 | 中科华核电技术研究院有限公司 | Holding grille and fuel assembly with same |
| CN104036832A (en) * | 2014-06-20 | 2014-09-10 | 中科华核电技术研究院有限公司 | Maintaining grating with double-blade spring and fuel assembly with grating |
| CN204884577U (en) * | 2015-07-06 | 2015-12-16 | 中科华核电技术研究院有限公司 | Strip, nuclear fuel grid spacer and nuclear fuel assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4631168A (en) * | 1983-09-30 | 1986-12-23 | Westinghouse Electric Corp. | Nuclear reactor fuel assembly with a removable top nozzle |
| CN86102919A (en) * | 1985-05-01 | 1986-11-05 | 西屋电气公司 | Have the nuclear fuel rod support grid that a plurality of nicks improve structure |
| US5732116A (en) * | 1995-06-29 | 1998-03-24 | Framatome | Spacer grid of a fuel assembly for a nuclear reactor, including attached springs |
| EP0766262A1 (en) * | 1995-09-29 | 1997-04-02 | Siemens Aktiengesellschaft | Spacer grid for nuclear fuel elements having attached springs |
| CN202948730U (en) * | 2012-12-20 | 2013-05-22 | 中国核动力研究设计院 | Grillwork with capacity of improving crowding effect of bottom bubble for nuclear fuel assembly |
| CN104021821A (en) * | 2014-06-20 | 2014-09-03 | 中科华核电技术研究院有限公司 | Holding grille and fuel assembly with same |
| CN104036832A (en) * | 2014-06-20 | 2014-09-10 | 中科华核电技术研究院有限公司 | Maintaining grating with double-blade spring and fuel assembly with grating |
| CN204884577U (en) * | 2015-07-06 | 2015-12-16 | 中科华核电技术研究院有限公司 | Strip, nuclear fuel grid spacer and nuclear fuel assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534217B (en) * | 2019-09-09 | 2023-08-18 | 中国船舶重工集团公司第七一九研究所 | Spent fuel storage grillwork for ocean nuclear power platform |
| CN114242271A (en) * | 2021-11-05 | 2022-03-25 | 岭澳核电有限公司 | Fuel assembly and framework thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106531231B (en) | 2018-05-22 |
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