CN203055470U - Ribbed cladding tube for radial location of fuel rod - Google Patents
Ribbed cladding tube for radial location of fuel rod Download PDFInfo
- Publication number
- CN203055470U CN203055470U CN2013200626139U CN201320062613U CN203055470U CN 203055470 U CN203055470 U CN 203055470U CN 2013200626139 U CN2013200626139 U CN 2013200626139U CN 201320062613 U CN201320062613 U CN 201320062613U CN 203055470 U CN203055470 U CN 203055470U
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- CN
- China
- Prior art keywords
- fuel rod
- cladding tube
- rib
- involucrum
- radial location
- 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.)
- Expired - Lifetime
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a ribbed cladding tube for radial location of a fuel rod. The ribbed cladding tube comprises a cladding tube main body, wherein the cladding tube main body is integrally in a cylindrical shape, the inside of the cladding tube main body is of a cavity structure, the outer side part of the cladding tube main body is at least provided with a rib which is protruded out of the outer surface, and the rib and the cladding tube main body are of an integral structure. Due to the adoption of the ribbed cladding tube, the radial location of a gap of a small-gap fuel rod can be realized, and the structural stability can be enhanced; the structural material is saved, and the fuel volume ratio can be increased; and the blending of the fluid can be promoted, and the heat conduction performance of coolant can be enhanced.
Description
Technical field
The utility model relates to a kind of involucrum pipe of nuclear reactor fuel rod, specifically refers to a kind of involucrum pipe with ribbing of fuel rod radial location.
Background technology
Be example with modal pressurized-water reactor nuclear power plant, the uranium that nuclear fuel adopts is low-enrichment uranium, and the content that wherein contains fissioner uranium-235 is that 3%(is called enrichment, and the uranium of natural uranium-235 enrichment is 0.714%).The ceramic UO pellet of the form of nuclear fuel for being sintered into by the uranium mix powder.Ceramic pellet stacks in the elongated Zirconium alloy material sleeve pipe of packing into.
In general, one group of (or a box) fuel assembly is equipped with a lot of fuel rods, is cooled off fully in order to make fuel rod, and heat is taken away, and fuel rod need be spaced from each other, and keeps the gap of defined between the fuel rod.In presurized water reactor, the normal separation of keeping between fuel rod is born by grid spacer, and grid spacer keeps fuel rod to be in screen work lattice cell center, and cross-brace is provided, but when the interrod spacing of fuel rod hour, just be difficult to the use grid spacer fuel rod carried out radial location.
The utility model content
The purpose of this utility model is to provide a kind of involucrum pipe with ribbing of fuel rod radial location, solves present fuel rod and be difficult to the purpose of locating in less spacing.
The purpose of this utility model is achieved through the following technical solutions:
A kind of involucrum pipe with ribbing of fuel rod radial location, comprise the involucrum tube body, involucrum tube body integral body is cylindric, its inside is cavity structure, at least be provided with a rib that protrudes from its outside surface on the exterior side wall of described involucrum tube body, described rib and involucrum tube body are structure as a whole.Main body of the present utility model is the involucrum tube body, the involucrum tube body adopts traditional structure, its integral body is straight tubular, its inside is cavity structure, be used for placing fuel slug, employing is at one of involucrum tube body arranged outside or the rib of one or more, by the contact radial location that just can realize fuel rod between of rib on the involucrum tube body with rib; When rib quantity is two or more, adopt evenly mode spaced apart, and its involucrum tube body axially on distribute according to particular length, make arranging of fuel rod become easily, be easy to the installation of arranging of fuel rod; Involucrum tube body and rib adopt integrative-structure, it is integrated manufacturing, and with respect to the locator meams of metal wrapping wire be: circular or oval tinsel pitch in accordance with regulations are wrapped on the fuel rod, two wiry be welded to respectively fuel rod on, the lower end beyond the Great Wall, it is too high that involucrum pipe with ribbing of the present utility model has solved in the reactor coolant flow speed, the metal wrapping wire is probably because the impact of cooling medium causes fixedly unstability of end welding, finally may become the foreign matter in the cooling medium, thereby increased the problem of fuel rod abrasion possibility, also solved simultaneously the particle barrier layer problem that exists in the grid location, realize the radial location of little gap fuel rod spacing, thereby reach the saving structured material, improve the effect of fuel assembly neutron economy; And, by the structure of reasonable Arrangement rib, can reduce the flow path resistance of cooling medium to greatest extent.
Described rib in the outside of involucrum tube body in the shape of a spiral shape arrange.
The xsect of described rib is rectangular or trapezoidal.Specifically, adopting the cross section of rib is rectangle or trapezoidal, makes that rib and contacting of rib are the face contact, strengthened the anti-erosion performance of rib, be conducive to improve the life-span, as simple substitution, also can be other geometric configuration, be the best to be between rib and the rib that face contacts especially.
The utility model compared with prior art has following advantage and beneficial effect:
The involucrum pipe with ribbing of a kind of fuel rod radial location of 1 the utility model, employing is at one of involucrum tube body arranged outside or the rib of one or more, simultaneously, rib is spirally wrapped around the outside surface of involucrum tube body, by the contact radial location that just can realize fuel rod between of rib on the involucrum tube body with rib; When rib quantity is two or more, adopt evenly mode spaced apart, and its involucrum tube body axially on distribute according to particular length, make arranging of fuel rod become easily, be easy to the installation of arranging of fuel rod;
The involucrum pipe with ribbing of a kind of fuel rod radial location of 2 the utility model can be realized the radial location of fuel rod, strengthens structural stability; Save structured material, improve the volume of fuel portion; Promote fluid to mix, strengthen the heat transfer property of cooling medium;
The involucrum pipe with ribbing of a kind of fuel rod radial location of 3 the utility model, it is too high to have solved in the reactor coolant flow speed, the metal wrapping wire is probably because the impact of cooling medium causes fixedly unstability of end welding, finally may become the foreign matter in the cooling medium, thereby increased the problem of fuel rod abrasion possibility, solved the particle barrier layer problem that exists in the grid location simultaneously, to realize the radial location of fuel rod, thereby reach the saving structured material, improve the effect of fuel assembly neutron economy; And, by the structure of reasonable Arrangement rib, can reduce the flow path resistance of cooling medium to greatest extent.
Description of drawings
Fig. 1 has only the structural representation of a root bar for the utility model embodiment one;
Fig. 2 has the structural representation of four root bars for the utility model embodiment two;
Fig. 3 is the utility model embodiment two cross-sectional structure synoptic diagram;
Fig. 4 is the distressed structure synoptic diagram behind the utility model embodiment two displacement rib structures.
Mark and corresponding parts title in the accompanying drawing:
1-involucrum tube body, the 2-rib.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but embodiment of the present utility model is not limited thereto.
Embodiment one
As shown in Figure 1, the involucrum pipe with ribbing of a kind of fuel rod radial location of the utility model, comprise involucrum tube body 1, the involucrum tube body is cylindric, its inside is cavity structure, fuel pellet be used for to be installed, to be provided with a rib 2 at the outside surface of involucrum tube body 1, rib 2 is turning axle with the axis of involucrum tube body 1, shape is distributed in the outside surface of involucrum tube body 1 in the shape of a spiral equably, the xsect of rib 2 is rectangle, according to the characteristics of processing technology, also can be trapezoidal, perhaps other shape, for example by a circular part, rib 2 is structure as a whole with involucrum tube body 1, adopts the mould drawing.
Embodiment two
Shown in Fig. 2 to 3, the difference of present embodiment and embodiment one only is to be provided with four ribs 2, and rib 2 is evenly distributed on involucrum tube body 1 outside surface, and the xsect of rib 2 is rectangular; As shown in Figure 4, the shape of rib 2 can change with technology, is trapezium structure.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, any simple modification, the equivalent variations on every foundation technical spirit of the present utility model above embodiment done all fall within the protection domain of the present utility model.
Claims (3)
1. the involucrum pipe with ribbing of a fuel rod radial location, comprise involucrum tube body (1), involucrum tube body (1) integral body is cylindric, its inside is cavity structure, at least be provided with a rib (2) that protrudes from its outside surface on the exterior side wall of described involucrum tube body (1), it is characterized in that: described rib (2) and involucrum tube body (1) are structure as a whole.
2. the involucrum pipe with ribbing of a kind of fuel rod radial location according to claim 1 is characterized in that: described rib (2) in the outside of involucrum tube body (1) in the shape of a spiral shape arrange.
3. the involucrum pipe with ribbing of a kind of fuel rod radial location according to claim 1, it is characterized in that: the xsect of described rib (2) is rectangular or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200626139U CN203055470U (en) | 2013-02-04 | 2013-02-04 | Ribbed cladding tube for radial location of fuel rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200626139U CN203055470U (en) | 2013-02-04 | 2013-02-04 | Ribbed cladding tube for radial location of fuel rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055470U true CN203055470U (en) | 2013-07-10 |
Family
ID=48738398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200626139U Expired - Lifetime CN203055470U (en) | 2013-02-04 | 2013-02-04 | Ribbed cladding tube for radial location of fuel rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055470U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340326A (en) * | 2016-11-02 | 2017-01-18 | 中国核动力研究设计院 | Partial positioning structure for reactor electrical heating simulation rod cluster |
| CN109036591A (en) * | 2017-06-08 | 2018-12-18 | 中广核工程有限公司 | Nuclear reactor |
| CN109935371A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of two-sided cooling annular fuel rod with wrapping wire |
| CN113035384A (en) * | 2021-03-16 | 2021-06-25 | 中广核研究院有限公司 | Coated cladding for nuclear fuel rods and method of manufacture |
| CN113362972A (en) * | 2021-06-04 | 2021-09-07 | 中国核动力研究设计院 | Fuel rod positioning structure and fuel assembly for overcoming field force repulsion of fuel rod abrasion |
| WO2022016710A1 (en) * | 2020-07-24 | 2022-01-27 | 浙江久立特材科技股份有限公司 | Cold drawing die and production process for ribbed cladding tube, and finished tube thereof |
| CN115050488A (en) * | 2022-06-24 | 2022-09-13 | 中国核动力研究设计院 | Fuel pipe for improving thermal performance, fuel sleeve structure and fuel assembly |
-
2013
- 2013-02-04 CN CN2013200626139U patent/CN203055470U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340326A (en) * | 2016-11-02 | 2017-01-18 | 中国核动力研究设计院 | Partial positioning structure for reactor electrical heating simulation rod cluster |
| CN109036591A (en) * | 2017-06-08 | 2018-12-18 | 中广核工程有限公司 | Nuclear reactor |
| CN109036591B (en) * | 2017-06-08 | 2021-10-15 | 中广核工程有限公司 | Nuclear reactor core |
| CN109935371A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of two-sided cooling annular fuel rod with wrapping wire |
| WO2022016710A1 (en) * | 2020-07-24 | 2022-01-27 | 浙江久立特材科技股份有限公司 | Cold drawing die and production process for ribbed cladding tube, and finished tube thereof |
| CN113035384A (en) * | 2021-03-16 | 2021-06-25 | 中广核研究院有限公司 | Coated cladding for nuclear fuel rods and method of manufacture |
| CN113362972A (en) * | 2021-06-04 | 2021-09-07 | 中国核动力研究设计院 | Fuel rod positioning structure and fuel assembly for overcoming field force repulsion of fuel rod abrasion |
| CN115050488A (en) * | 2022-06-24 | 2022-09-13 | 中国核动力研究设计院 | Fuel pipe for improving thermal performance, fuel sleeve structure and fuel assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |