CN202948732U - Structure framework with flow mixing coordination function in nuclear fuel component - Google Patents
Structure framework with flow mixing coordination function in nuclear fuel component Download PDFInfo
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- CN202948732U CN202948732U CN2012207097606U CN201220709760U CN202948732U CN 202948732 U CN202948732 U CN 202948732U CN 2012207097606 U CN2012207097606 U CN 2012207097606U CN 201220709760 U CN201220709760 U CN 201220709760U CN 202948732 U CN202948732 U CN 202948732U
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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 structure framework with a flow mixing coordination function in a nuclear fuel component. The structure framework comprises a framework formed by vertically interlacing multiple strips, wherein a pair of mixing wings is arranged on each of the two sides of the top at the junction of the strips; and each strip sinks inward to form a half-fastening rigid convex structure I. By adopting a half-fastening rigid convex structure, coordination between a clamping system and a mixing system is realized, the mixing performance of the structure framework is enhanced, and the clinical heat flux density of a fuel component is improved; and due to the inclined channel type half-fastening rigid convex structures in pairs, the flow in the structure framework is effectively adjusted, and pressure loss is reduced to a certain extent.
Description
Technical field
The utility model relates to based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, belongs to the design to pressurized-water reactor nuclear power plant fuel assembly structure screen work.
Background technology
Existing pressurized-water reactor nuclear power plant fuel assembly commonly used is comprised of some fuel rods, guide pipe, grid spacer and upper bottom nozzle etc.Grid spacer is as the important component part of skeleton, and its major function one is that the clamping fuel rod makes its location, and the 2nd, mix fluid to improve the critical heat flux density of fuel assembly.Typical structural Case sets up meter increase on the basis of grasping system and mixes system, thereby realizes the stack of above-mentioned two functions of grid spacer.
By special topic and patent document retrieval, more close with the utility model is the AFA series structure screen work of Fa Matong.AFA series screen work also has grasping system and mixes system, realizes clamping position to fuel rod by three curved springs and the firm protruding grasping system that forms of bridge shape, and the system of mixing of mixing wing one-tenth by the tearing type that generally adopts in the world realizes that the friendship of convection cell mixes up use.Yet, this design is not considered grasping system and is mixed the system coordination problem, the interference of grasping system (three curved springs and bridge shape are just protruding) stream field causes movement disorder, especially go up the just protruding friendship that system is mixed in the downstream and mix up with forming severe interference, cause the friendship mixcibility of structure screen work to weaken.
The utility model content
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provide based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, this structure screen work adopts half buckle-shaped firm male structure, the passage of formation band both sides cross flow, the downstream mixes wing effect mobilely carries out rectification to being about to be subjected to, mix the more effective guiding flow direction of wing energy thereby make, amplify the friendship of the system of mixing and mix up use, realize the harmony that grasping system is mixed with mixing system's flow friendship.
The purpose of this utility model is achieved through the following technical solutions: based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, comprise the screen work that mutually vertically interweaves and consist of by some bands, the both sides at the top at described ribbing cross place are provided with a pair of wing of mixing, and every band concave shaped becomes half buckle-shaped firm male structure one.Adopt half buckle-shaped firm male structure, just male structure one and just male structure two form symmetrical structure with the point on band, form the passage of band both sides cross flow, thus make mix the wing can more effective guiding flow direction, amplify the friendship of the system of mixing and mix up use.
Further, the openend of described firm male structure one is towards the wrap direction of mixing the wing of correspondence.just male structure one is partly buckle-shaped, cooling medium is because the flow velocity of self flows in the zone that interior band consists of, openend by half buckle-shaped firm male structure one flows out, and openend is set to the wrap direction of mixing the wing towards correspondence, the bootable coolant flow of openend is to the wrap direction of mixing the wing of correspondence, under several firm male structure effects, the passage of formation band both sides cross flow, cooling medium mobile carried out rectification, mix the more effective guiding flow direction of wing energy thereby make, amplify the friendship of the system of mixing and mix up use, realize the harmony that grasping system is mixed with mixing system's flow friendship.
Further, on the described band that is provided with firm male structure one, indent forms firm male structure two, and just male structure two is half buckle-shaped, and just the opening direction of male structure two and indent direction respectively with opening direction and the indent opposite direction of firm male structure one.
Further, described firm male structure one and firm male structure two all are arranged between parallel band adjacent in band.
Further, described firm male structure one is provided with spring eye away from an end of openend, and described spring eye is connected with the bottom of firm male structure one, and spring eye runs through this corresponding band.Half buckle-shaped firm male structure one of opening upwards produces with the spring assembling if be subject to swath height and interferes, can be in the just cambered surface root perforate of male structure one.
Further, mix the wing and be symmetrical arranged centered by the point of crossing of corresponding band for described every pair.
In sum, the beneficial effects of the utility model are:
(1) adopt half buckle-shaped firm male structure, realized grasping system and mixed system coordination, strengthened the friendship mixcibility energy of structure screen work, thereby improved the critical heat flux density of fuel assembly;
(2) double buckle-shaped firm male structure of one-tenth of access ramp formula carried out rectification to structure screen work inside mobile effectively, reduced to a certain extent the pressure loss.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the half buckle-shaped just protruding schematic diagram that coordinates with mixing the wing;
Fig. 3 is overall schematic of the present utility model.
Mark and corresponding parts title in accompanying drawing: 1-just male structure two; 2-just male structure one; 3-band; 4-spring eye; 5-mix the wing.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited only to this.
Embodiment:
As Fig. 1, Fig. 2, shown in Figure 3, based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, comprise the screen work that mutually vertically interweaves and consist of by some bands 3, the both sides at the top of described band 3 intersections are provided with a pair of wing 5 of mixing, every band 3 indents form half buckle-shaped firm male structure 1, and the openend of firm male structure 1 is towards the wrap direction of mixing the wing 5 of correspondence.Mix the overbending direction of the wing 5 according to screen work band 3 tops, just convex position punching press half buckle-shaped structure on band 3, half buckle-shaped upward opening is towards mixing wing overbending direction, form on the crossover location of band 3 intersect towards mix the wing.
On the described band that is provided with firm male structure 1, indent forms firm male structure 21, and just male structure 21 is half buckle-shaped, and just the opening direction of male structure 21 and indent direction respectively with opening direction and the indent opposite direction of firm male structure 1.Just male structure 1 and firm male structure 21 all adopt the mode of punching press to form, and whole punching course guarantees each architectural feature by mould, realizes disposable putting in place, avoids band repeatedly stressed, causes inner structure to change.The firm male structure 1 that independent setting is arranged on band 3 is offered spring eye 4 with its bottom arcwall face.
Described firm male structure 1 and firm male structure 21 all are arranged between parallel band 3 adjacent in band 3.In each unit screen work that band 3 consists of, several unit screen works form the structure screen work, and just male structure 1 and firm male structure 21 all are arranged on the band 3 of screen work inside, unit.
Described firm male structure 1 is provided with spring eye 4 away from an end of openend, and described spring eye 4 is connected with the bottom of firm male structure 1, and spring eye 4 runs through this corresponding band 3.Interfere phenomenon for fear of firm male structure 1 spring corresponding with it when the assembling, need to spring eye 4 be set at the just root of male structure 1, spring is single spring, be stuck in just protruding in, according to the parameter of design, select the spring of the type such as varying strength.
Mix the wing 5 and be symmetrical arranged centered by the point of crossing of corresponding band 3 for described every pair.Mix the wing 5 and mix the effect of fluid, improve the critical heat flux density of screen work and fuel assembly.
This structure screen work of the present utility model is applicable to all size, as 12 * 12 scale screen works, 15 * 15 scale screen works, 17 * 17 scale screen works etc., adopt can promote after the screen work of this structure for estimate screen work hand over mixcibility can the vortex factor (FSM), make vortex hand over mixed rate (SM) to improve, promote cross-current and hand over the mixed factor (FCM).Whirlpool and horizontal strength of flow and operating distance are all greater than existing structure screen work.Promoted simultaneously and be used for estimating the friendship of the handing over mixed effect evenness that is mixed, and promoted temperature distribution evenness, the quality of screen work hands over mixcibility to hand over mixcibility that to a certain degree lifting can all be arranged with heat.The below calculates take 17 * 17 scale screen works as example, and it is as follows that it promotes effect:
In 17 * 17 scale screen works, adopt the grid spacer of above-described embodiment setting to compare with the logical AFA3G grid spacer of method horse, being used for estimating screen work hands over the vortex factor (FSM) of mixcibility energy to promote 17.7%, vortex hands over mixed rate (SM) to promote 29%, and cross-current hands over the mixed factor (FCM) to promote 20.82%.Whirlpool and horizontal strength of flow and operating distance are all greater than the AFA3G grid spacer.Be used for to estimate hand over the friendship of the mixed effect evenness that is mixed to promote 3.5%, temperature distribution evenness has promoted 29.2%, and the quality of screen work hands over mixcibility to hand over mixcibility that to a certain degree lifting can all be arranged with heat.
Have more than 400 to mix the wing 5 in 17 * 17 scale screen works, wherein approximately half mixes the impact that the wing 5 upstream cooling mediums are subjected to firm convex form.Adopt firm male structure one 2 openends described in embodiment to arrange towards the mode of the wrap direction of mixing the wing 5 of correspondence, can effectively weaken the firm convex form in upstream to mixing the adverse effect of the wing 5, guide more coolant flow to mixing the wing 5.Compare with the AFA series structure screen work of Fa Matong, adopt described firm male structure 1 in embodiment and mix the layout that the wing 5 is complementary, can promote largely the friendship mixcibility energy of grid spacer, hand over thereby reach the reinforced structure screen work purpose of mixing up use.
The structure screen work adopts half buckle-shaped firm male structure, do not affect the positioning function of original grasping system, simultaneously to production technology also without additional harsh requirement, but use is mixed up in the friendship of having strengthened the structure screen work, reduce the pressure loss, thereby be conducive to improve the even thermal-hydraulic performance of fuel assembly of structure screen work.
Take aforesaid way, just can realize preferably the utility model.
Claims (5)
1. based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, comprise the screen work that mutually vertically interweaves and consist of by some bands (3), the both sides at the top of described band (3) intersection are provided with a pair of wing (5) of mixing, it is characterized in that: every band (3) indent forms half buckle-shaped firm male structure one (2), and the openend of described firm male structure one (2) is towards the wrap direction of mixing the wing (5) of correspondence.
2. according to claim 1 based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, it is characterized in that: the described upper indent of band (3) that is provided with firm male structure one (2) forms firm male structure two (1), just male structure two (1) is half buckle-shaped, and just the opening direction of male structure two (1) and indent direction respectively with opening direction and the indent opposite direction of firm male structure one (2).
3. according to claim 2 based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, it is characterized in that: described firm male structure one (2) and firm male structure two (1) all are arranged between parallel band (3) adjacent in band (3).
4. according to claim 1 based on the structure screen work that has the flowing and mixing coordinative role in nuclear fuel assembly, it is characterized in that: described firm male structure one (2) is provided with spring eye (4) away from an end of openend, described spring eye (4) is connected with the bottom of firm male structure one (2), and spring eye (4) runs through this corresponding band (3).
5. the described structure screen work based on having the flowing and mixing coordinative role in nuclear fuel assembly of any one according to claim 1 to 4 is characterized in that: mix the wing (5) and be symmetrical arranged centered by the point of crossing of corresponding band (3) for described every pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207097606U CN202948732U (en) | 2012-12-20 | 2012-12-20 | Structure framework with flow mixing coordination function in nuclear fuel component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207097606U CN202948732U (en) | 2012-12-20 | 2012-12-20 | Structure framework with flow mixing coordination function in nuclear fuel component |
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| Publication Number | Publication Date |
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| CN202948732U true CN202948732U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012207097606U Withdrawn - After Issue CN202948732U (en) | 2012-12-20 | 2012-12-20 | Structure framework with flow mixing coordination function in nuclear fuel component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021478A (en) * | 2012-12-20 | 2013-04-03 | 中国核动力研究设计院 | Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect |
| CN109994222A (en) * | 2017-12-29 | 2019-07-09 | 中国核动力研究设计院 | A kind of grid spacer of nuclear fuel assembly |
-
2012
- 2012-12-20 CN CN2012207097606U patent/CN202948732U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021478A (en) * | 2012-12-20 | 2013-04-03 | 中国核动力研究设计院 | Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect |
| WO2014094566A1 (en) * | 2012-12-20 | 2014-06-26 | 中国核动力研究设计院 | Grid structure with flow hybrid coordination function in nuclear fuel assembly |
| CN103021478B (en) * | 2012-12-20 | 2015-09-09 | 中国核动力研究设计院 | Based on the structure screen work in nuclear fuel assembly with flowing and mixing coordinative role |
| GB2523965A (en) * | 2012-12-20 | 2015-09-09 | Nuclear Power Inst China | Grid structure with flow hybrid coordination function in nuclear fuel assembly |
| GB2523965B (en) * | 2012-12-20 | 2018-01-03 | Nuclear Power Inst China | Grid structure with flow hybrid coordination function in nuclear fuel assembly |
| CN109994222A (en) * | 2017-12-29 | 2019-07-09 | 中国核动力研究设计院 | A kind of grid spacer of nuclear fuel assembly |
| CN109994222B (en) * | 2017-12-29 | 2022-05-20 | 中国核动力研究设计院 | Nuclear fuel assembly's spacer grid |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20150909 |
|
| RGAV | Abandon patent right to avoid regrant |