CN207124038U - A kind of nuclear fuel assembly, location grid and spring - Google Patents
A kind of nuclear fuel assembly, location grid and spring Download PDFInfo
- Publication number
- CN207124038U CN207124038U CN201720669513.0U CN201720669513U CN207124038U CN 207124038 U CN207124038 U CN 207124038U CN 201720669513 U CN201720669513 U CN 201720669513U CN 207124038 U CN207124038 U CN 207124038U
- Authority
- CN
- China
- Prior art keywords
- spring
- contact site
- fuel rod
- location grid
- connecting portion
- 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.)
- Active
Links
Classifications
-
- 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
- Fuel Cell (AREA)
Abstract
It the utility model is related to a kind of nuclear fuel assembly, location grid and spring.The spring includes the contact site for contacting and compressing the fuel rod of the nuclear fuel assembly and at the both ends of the contact site to two connecting portions away from fuel rod direction setting；Discharge orifice is provided with the connecting portion, close to the opening position of the contact site.By opening up discharge orifice on the connecting portion of spring, and close to the position of contact site, so as to reduce the Gating Area of spring, and then reduce the pressure loss of location grid；It is additionally, since discharge orifice not open up on contact site, so as to avoid the scraping damage in fuel rod insertion process；Moreover, the setting of discharge orifice reduces the rigidity of spring, the resilient clamping force of spring is improved, is more beneficial for the clamping to fuel rod.
Description
Technical field
It the utility model is related to technical field of nuclear power, more particularly to a kind of nuclear fuel assembly, location grid and spring.
Background technology
Nuclear reactor is reacted by the chain nuclear fission of manual control fissile material, for producing heat etc., is sent out
Electricity etc..
Nuclear fuel is generally processed into fuel rod by existing nuclear reactor, is combined and is installed in location grid with control rod,
Form nuclear fuel assembly.Generally, location grid includes some bands 3, and band 3 intersects setting in same level, shape
Into multiple lattice cells.Fuel rod, control rod etc. are arranged in corresponding lattice cell, form overall nuclear fuel assembly.
In order to which fuel rod is clamped in location grid, spring would generally be installed in lattice cell in the prior art, utilized
The elastic compression power of spring, fuel rod is clamped in lattice cell.As shown in figure 1, be a kind of structure type of existing spring, its
Including contact site 1, connecting portion 2 etc..As illustrated, the band 3 is integrally formed with spring, contact site 1 is connected to by connecting portion 2
On band 3.The contact site 1 protrudes from the plane where band 3, and offers on contact site 1 and to crack 5, by contact site 1 one
It is divided into two, so as to form two wire spring structure, is arranged in clamping in the lattice cell where spring.Although the structure adds spring
Chucking power and improve the flow field of cooling agent, still, can connect with the contact site 1 of spring due to fuel rod during insertion
Touch, and crack 5 presence, certainly exist the risk for scratching fuel rod clad, cause potential safety hazard, and then cause the peace of nuclear power station
Full property cannot ensure.
Utility model content
The technical problems to be solved in the utility model is, there is provided a kind of spring for ensureing fuel rod insertion safety, determines
Position grid and nuclear fuel assembly.
Technical scheme is used by the utility model solves its technical problem：There is provided and a kind of determine for nuclear fuel assembly
The spring of position grid, including contact and compress the contact site of the fuel rod of the nuclear fuel assembly and in the contact site
Two connecting portions that both ends are set to the remote fuel rod direction；On the connecting portion, close to the opening position of the contact site
It is provided with discharge orifice.
Preferably, the spring also includes two supporting parts being connected respectively with the connecting portion；The supporting part connects respectively
The bar for being connected to the location grid takes.
Preferably, gap be present between the top bottom surface of the supporting part and band place plane.
Preferably, it is round and smooth mistake between the contact site and the connecting portion, between the connecting portion and the supporting part
Cross connection.
Preferably, the discharge orifice from the connecting portion and the contact site connecting position to away from the contact site
Direction, it is extended with the axis direction parallel to the fuel rod.
Preferably, the discharge orifice opens up on two connecting portion, or, the connection of the discharge orifice in bottom
Set in portion.
Preferably, the discharge orifice includes long and narrow portion and the flow passage continuously set；The long and narrow portion is close to described
The position of contact site is set, and the flow passage is set in the position away from the contact site；The area of the flow passage is more than institute
State the area in long and narrow portion.
The utility model also provides a kind of location grid for nuclear fuel assembly, is included in same level and mutually hands over
Fork sets, forms multiple bands for being used to accommodate the lattice cell of fuel rod；Characterized in that, the location grid also includes above-mentioned
Spring described in one；The spring is arranged in the lattice cell for being equipped with the fuel rod.
Preferably, the spring and the band are integrally compressing；Or
It is fixedly mounted on the bar by welding or riveting after the spring is separately formed and takes.
The utility model also provides a kind of nuclear fuel assembly, including fuel rod；The nuclear fuel assembly also includes above-mentioned
Location grid described in one；The fuel rod is arranged in the lattice cell of the location grid.
Implement the technical solution of the utility model, by opening up discharge orifice on the connecting portion of spring, and close to contact site
Position, so as to reduce the Gating Area of spring, and then reduce the pressure loss of location grid；It is additionally, since flowing water
Hole does not open up on contact site, so as to avoid the scraping damage in fuel rod insertion process；Moreover, discharge orifice is set
Putting reduces the rigidity of spring, improves the resilient clamping force of spring, is more beneficial for the clamping to fuel rod.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the band spring structure of prior art.
Fig. 2 is a kind of schematic diagram of one embodiment of spring provided by the utility model.
Fig. 3 is a kind of schematic top plan view of one embodiment of spring provided by the utility model.
Fig. 4 is that a kind of spring provided by the utility model is applied to the schematic diagram that bar takes.
Fig. 5 is the displacement of one embodiment and prior art and the change of contact area of a kind of spring provided by the invention
Curve synoptic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As in Figure 2-4, one embodiment of a kind of spring provided by the utility model, available for determining for nuclear fuel assembly
In the grid of position.The spring 10 includes contact site 11, connecting portion 12 etc., is contacted by contact site 11 with fuel rod, compresses fuel rod
It is maintained in the lattice cell of location grid.
The contact site 11 is a straight tabular, and its length direction is parallel with the axis direction of fuel rod, so as to press from both sides
When holding fuel rod, larger contact area is formed between fuel rod, increases chucking power, and reduce the damage to fuel rod.
In the present embodiment, connecting portion 12 includes two, is set respectively at the both ends of contact site 11.The connecting portion 12 prolongs
Stretch direction to set to the direction away from fuel rod, so that contact site 11 forms the shape of evagination, and connecting portion 12 plays bullet
The effect of property arm, resilient clamping force is provided for the clamping of fuel rod.
In order to change the flow field of cooling agent and improve elastic force, discharge orifice 13 is offered on connecting portion 12, the discharge orifice
13 are opened in the opening position close to contact site 11, can avoid opening up on contact site 11 cracking and bring the wind of damage fuel rod
Danger, and the Gating Area of spring 10 can be effectively reduced, and then reduce the pressure loss of location grid.It is moreover, logical
The setting of discharge orifice 13 is crossed, the flexibility of connecting portion 12 can be effectively increased, and then improves the flexibility of spring 10, more favourable combustion
The clamping of charge bar.
In the present embodiment, (i.e. connecting portion 12 is with connecing for the opening position that discharge orifice 13 is intersected from connecting portion 12 with contact site 11
The bending part of contact portion 11) start, to the direction away from contact site 11, extend in a manner of parallel to fuel rod axis direction and set
Put, fluid can be avoided to form dead angle in bending part, fluid can pass through discharge orifice 13, reduce the entirety of location grid
Pressure drop.
As illustrated, the discharge orifice 13 opens up on two connecting portions 12 simultaneously, can be more effectively for fluid by reducing pressure
Drop.It is of course also possible to according to being actually needed, only set on the connecting portion 12 of downside, so as to improve the integral rigidity of spring 10.
Further, the discharge orifice 13 includes long and narrow portion 131 and the flow passage 132 continuously set.Long and narrow portion 131 exists
Set close to the position of contact site 11, by the setting in long and narrow portion 131, excessive reduction rigidity can either be avoided, can be increased again
Add the flexibility of spring 10, be more beneficial for the clamping of fuel rod.Flow passage 132 is set in the position away from contact site 11, and mistake
The area in stream portion 132 is more than the area in long and narrow portion 131, so that area of passage increases, it is fixed more effectively to reduce
The overall pressure drop of position grid.Certainly, the shape of flowing hole, area etc., can also be opened up according to being actually needed to be designed.
Further, the spring 10 also includes two supporting parts 14 connected respectively at connecting portion 12, also, two supporting parts 14
It is respectively connecting on the band 20 of location grid, so as to which spring 10 is fixedly attached on band 20, and contact site 11 protrudes
Plane where band 20, extend into lattice cell, so as to clamp the fuel rod being arranged in lattice cell.
Further, gap be present between the plane at the top bottom surface of supporting part 14 and the place of band 20, so as to increase
Add the connection rigidity of spring 10；And it is possible to excessively stream gap is formed between supporting part 14 and band 20, in order to leading to for fluid
Cross, reduce pressure drop.
Further, contact site 11, connecting portion 12, supporting part 14 are formed in one, and contact site 11 and connecting portion 12
Between, connected for rounding off between connecting portion 12 and supporting part 14, so as to reduce the pressure drop of fluid, lifting heat exchange effect
Rate.
As shown in figure 4, be the schematic diagram of the band 20 of one embodiment of location grid of the present utility model, the positioning lattice
Grid can be used in nuclear fuel assembly.In the present embodiment, the location grid includes some bands 20.Such band 20 mutually hangs down
It is straight arranged in a crossed manner, form " egg-crate type " structure with multiple lattice cells.Most lattice cell is used to accommodate fuel rod；Certainly, exist
It is used to accommodate control rod etc. in other lattice cells.In order to clamp fuel rod in the lattice cell for accommodating fuel rod, the location grid is also
Spring 10 provided with above-described embodiment, the spring 10, which may be provided at, to be equipped with the lattice cell of fuel rod.It should be understood that the spring
10 can use the structure of spring 10 of above-described embodiment, will not be described here.
In certain embodiments, the band 20 can be divided into the first band 20, second strip 20, accommodate the lattice cell of fuel rod
Intersected to form by two the first parallel band 20 second strips 20 parallel with two, the plane of the first band 20 and second strip
20 planes are vertical.
As illustrated, in the present embodiment, the spring 10 and the one of band 20 are compressing.The supporting part 14 of spring 10 with
Band 20 connects, also, gap be present between the plane where the top bottom surface of supporting part 14 and band 20, so as to increase
The connection rigidity of spring 10；And it is possible to excessively stream gap is formed between supporting part 14 and band 20, in order to leading to for fluid
Cross, reduce pressure drop.
The connecting portion 12 and contact site 11 of spring 10 protrude the place plane of band 20, prominent to the inwall of lattice cell, so as to connect
Contact portion 11 can contact with being inserted in fuel rod therein, compress fuel rod.
Certainly, spring 10 and band 20 can also be separately formed, and spring 10 is being fixed by the mode such as welding, riveting
On band 20, integrative-structure is formed.Further, band 20 can be made with spring 10 using identical material,
It can be made using different materials, for example, the material that spring 10 can use anti-fatigue ability stronger is made.
In one embodiment of the present utility model, also disclose a kind of nuclear fuel assembly, including above-described embodiment is determined
Position grid and fuel rod.The location grid can use the location grid of above-mentioned any embodiment, will not be described here.Combustion
Charge bar can be located in the lattice cell of location grid, and is compressed by the prominent spring 10 in lattice cell, kept so as to position
Fuel rod.
It is as shown in the table, be the present embodiment band displacement and fuel rod contact force, contact area change trend,
Compared with prior art, there is the lifting of obvious technique effect, can refer to shown in Fig. 5.When displacement starts increase, existing skill
The contact force of art, the variation tendency of contact area, hence it is evident that less than the variation tendency of the present embodiment, it is seen then that the band of the present embodiment
Clamping effect be substantially better than prior art.
Step in the method for the utility model embodiment can be according to being actually needed the adjustment of carry out order, merge and delete
Subtract.Module or unit or subelement in the device of the utility model embodiment can be merged, divided according to being actually needed
With delete.
Above disclosed is only preferred embodiment of the present utility model, certainly can not be new to limit this practicality with this
The interest field of type, one of ordinary skill in the art will appreciate that all or part of flow of above-described embodiment is realized, and according to this
Utility model right requires made equivalent variations, still falls within the scope that utility model is covered.
Claims (10)
1. a kind of spring of location grid for nuclear fuel assembly, including contact and compress the fuel rod of the nuclear fuel assembly
Contact site and the both ends of the contact site to away from the fuel rod direction set two connecting portions；Characterized in that,
Discharge orifice is provided with the connecting portion, close to the opening position of the contact site.
2. spring according to claim 1, it is characterised in that the spring also includes what is be connected respectively with the connecting portion
Two supporting parts；The bar that the supporting part is respectively connecting to the location grid takes.
3. spring according to claim 2, it is characterised in that the top bottom surface of the supporting part where the band with putting down
Gap between face be present.
4. spring according to claim 3, it is characterised in that between the contact site and the connecting portion, the connection
Connected between portion and the supporting part for rounding off.
5. according to the spring described in claim any one of 1-4, it is characterised in that the discharge orifice from the connecting portion with it is described
It is extended at contact site connecting position to the direction away from the contact site, with the axis direction parallel to the fuel rod.
6. spring according to claim 5, it is characterised in that the discharge orifice opens up on two connecting portion, or,
The discharge orifice is set on the connecting portion of bottom.
7. spring according to claim 5, it is characterised in that the discharge orifice include the long and narrow portion that continuously sets and
Flow passage；The long and narrow portion is set close to the position of the contact site, and the flow passage is in the position away from the contact site
Set；The area of the flow passage is more than the area in the long and narrow portion.
8. a kind of location grid for nuclear fuel assembly, it is included in same level the setting that intersects, forms multiple use
In the band for the lattice cell for accommodating fuel rod；Characterized in that, the location grid is also included described in claim any one of 1-7
Spring；The spring is arranged in the lattice cell for being equipped with the fuel rod.
9. location grid according to claim 8, it is characterised in that the spring is integrally compressing with the band；
Or
It is fixedly mounted on the bar by welding or riveting after the spring is separately formed and takes.
10. a kind of nuclear fuel assembly, including fuel rod；Characterized in that, the nuclear fuel assembly also includes claim 8 or 9
Described location grid；The fuel rod is arranged in the lattice cell of the location grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669513.0U CN207124038U (en) | 2017-06-09 | 2017-06-09 | A kind of nuclear fuel assembly, location grid and spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669513.0U CN207124038U (en) | 2017-06-09 | 2017-06-09 | A kind of nuclear fuel assembly, location grid and spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207124038U true CN207124038U (en) | 2018-03-20 |
Family
ID=61615350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720669513.0U Active CN207124038U (en) | 2017-06-09 | 2017-06-09 | A kind of nuclear fuel assembly, location grid and spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207124038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221358A (en) * | 2017-06-09 | 2017-09-29 | 中广核研究院有限公司 | A kind of nuclear fuel assembly, location grid and spring |
| CN113362973A (en) * | 2021-06-04 | 2021-09-07 | 中国核动力研究设计院 | Grid spring for improving abrasion resistance and reducing resistance and positioning grid |
-
2017
- 2017-06-09 CN CN201720669513.0U patent/CN207124038U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221358A (en) * | 2017-06-09 | 2017-09-29 | 中广核研究院有限公司 | A kind of nuclear fuel assembly, location grid and spring |
| CN113362973A (en) * | 2021-06-04 | 2021-09-07 | 中国核动力研究设计院 | Grid spring for improving abrasion resistance and reducing resistance and positioning grid |
| CN113362973B (en) * | 2021-06-04 | 2022-02-22 | 中国核动力研究设计院 | Grid spring for improving abrasion resistance and reducing resistance and positioning grid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107221358A (en) | A kind of nuclear fuel assembly, location grid and spring | |
| CN207124038U (en) | A kind of nuclear fuel assembly, location grid and spring | |
| CN206849503U (en) | A kind of nuclear fuel assembly, location grid and band | |
| CN105845498B (en) | A kind of low-pressure injection molding magnetic approach switch | |
| CN107230501A (en) | A kind of nuclear fuel assembly, location grid and band | |
| CN208102254U (en) | A kind of boat segmental turn protective edge tooling | |
| CN208806244U (en) | A kind of chip-packaging structure | |
| CN206558524U (en) | A kind of integrated " L " the type busbar of solar cell module | |
| CN208721351U (en) | A kind of U heat exchange water test unit | |
| CN207093931U (en) | A kind of aquaculture water pipe clamp | |
| CN208718414U (en) | A kind of reusable safety net hooking device | |
| CN208373946U (en) | A kind of inner container of icebox trimming device | |
| CN209266682U (en) | A kind of adaptation electric force looped network cabinet New connector | |
| CN209050105U (en) | A kind of steel ladle fast cooling device | |
| CN206947570U (en) | A kind of transition copper cash ear-pole connection structure | |
| CN207289895U (en) | A kind of plug valve frock | |
| CN206559156U (en) | Contact pin, field frame assembly and motor | |
| CN209571655U (en) | A kind of electric wire leakproof electric connection used convenient for connection | |
| CN219074705U (en) | Wire clamping mechanism for series welding machine | |
| CN209399399U (en) | A kind of draining sewage draining exit of preheater | |
| CN208652599U (en) | A kind of gas furnace fume extractor | |
| CN207909866U (en) | A kind of repeatable chip pin utilized | |
| CN102983197A (en) | Reflective solder strip | |
| CN208352417U (en) | A kind of cupro-nickel bonding pad for power tool battery connection | |
| CN208852492U (en) | A kind of filter entirety opposite opened fanning strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |