CN103247352A - Upper pipe seat of fuel component - Google Patents
Upper pipe seat of fuel component Download PDFInfo
- Publication number
- CN103247352A CN103247352A CN2013101441990A CN201310144199A CN103247352A CN 103247352 A CN103247352 A CN 103247352A CN 2013101441990 A CN2013101441990 A CN 2013101441990A CN 201310144199 A CN201310144199 A CN 201310144199A CN 103247352 A CN103247352 A CN 103247352A
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- Prior art keywords
- discharge orifice
- web joint
- connecting hole
- fuel assembly
- base
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- 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
- G21C3/322—Means to influence the coolant flow through or around the bundles
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- 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
- G21C3/3315—Upper nozzle
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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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Pipe Accessories (AREA)
- Fuel Cell (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
The invention discloses an upper pipe seat of a fuel component. The upper pipe seat mainly comprises a connection plate, a surrounding plate fixed on the edge of the connection plate, and a frame plate fixed on the surrounding plate, wherein connection holes A for mounting fuel component guide pipes and a connection hole B for mounting an instrument pipe are formed in the connection plate; a plurality of integrally elongated water flowing holes are uniformly formed in the connection plate and comprise water flowing holes A and water flowing holes B; and an included angle between the axis of each water flowing hole A and the axis of the corresponding water flowing hole B is more than 0 degree. The upper pipe seat has the advantages and the beneficial effects that the shapes and the arrangement modes of the water flowing holes are changed, so that the water flowing holes can be uniformly formed, the flowing area proportion increases, and the technical problems of poor economical property of the upper pipe seat and adverse influence to distribution of a flowing field at an outlet of the fuel component are solved.
Description
Technical field
The present invention relates to the nuclear industry field, be specifically related to base on a kind of fuel assembly.
Background technology
Nuclear fuel assembly is made up of some fuel rods, guide pipe, grid spacer and last bottom nozzle etc., and its structural representation as shown in Figure 1.Wherein, last base 1 is as critical component, plays the located lateral fuel assembly, bears and transmits snap-in force, outlet cavity is provided, interface is provided, prevents effect such as fuel rod ejection for the fuel assembly lifting for cooling medium.
Base mainly is made up of web joint, coaming plate and deckle board on the existing fuel assembly.In Fig. 2, show the existing web joint of going up base.Web joint is substantially square, offers circular gauge pipe connecting hole and guide pipe connecting hole and some strips discharge orifice at web joint.There is following problem in the existing base of going up:
1. the arrangement of discharge orifice is not good, makes the negligible amounts of discharge orifice, directly causes on the web joint ratio of circulation area lower, the pressure drop of both sides is bigger about the web joint, in this case, need to consume more main pump lift and just can make cooling-water flow reach requirement, economy is not good enough;
2. the discharge orifice is asymmetric geometry, and the Flow Field Distribution that fuel assembly is exported has adverse effect, when chilled water distributes behind the base on passing through again, is easy to generate cross-current, increases control rod and burnable poison rod and vibrates the risk of denuding and causing losing efficacy.
Summary of the invention
It is bad that purpose of the present invention namely is to overcome existing last base economy, and the Flow Field Distribution unfavourable defect to the fuel assembly outlet provides base on a kind of fuel assembly.
Purpose of the present invention is achieved through the following technical solutions:
Base on the fuel assembly, mainly by web joint, be fixed on the coaming plate at web joint edge and the deckle board that is fixed on the coaming plate constitutes, offer on the web joint for the connecting hole A that the fuel assembly guide pipe is installed with for the connecting hole B that gauge pipe is installed, on described web joint, evenly offer the discharge orifice of a plurality of strips, the discharge orifice comprises discharge orifice A and discharge orifice B, has the angle greater than 0 ° between the axis of discharge orifice A and discharge orifice B; On described web joint, form connecting portion between axial two adjacent discharge orifice A and two discharge orifice B; On described web joint, form the portion that surrounds between two discharge orifice A of radially adjoining and two discharge orifice B; Also offer the discharge orifice, center on the described web joint, connecting hole A, connecting hole B and discharge orifice, center are arranged in the portion of surrounding respectively.
Overcome the defective of prior art, its technical matters that mainly should solve is to arrange how more uniformly the discharge orifice that the total area is bigger.The inventor is divided into uneven discharge orifice A and discharge orifice B with the discharge orifice, and discharge orifice A and discharge orifice B are arranged in the mode of intersecting on the whole.With respect to the mode that is arranged in parallel in the prior art, the mode of arranged crosswise can be in the layout of taking into account connecting hole A, connecting hole B and discharge orifice, center, layout discharge orifice as much as possible, improve the ratio of circulation area on the web joint, reduce the web joint purpose of both sides pressure drop up and down thereby reach.Connecting portion plays the effect of keeping the web joint globality, on the basis that guarantees the web joint structural strength, can reduce the area of connecting portion as far as possible, and the ratio of circulation area reaches maximum on the web joint thereby make.In addition, be subject to the setting of connecting hole A, connecting hole B and discharge orifice, center, the mode that is arranged in parallel in the prior art is when implementing, can only fill up remaining space on the web joint by the discharge orifices that different sizes are set, and the setting of discharge orifice can't be accomplished symmetry, this causes by web joint aquifer yield everywhere and inhomogeneous, has influenced the Flow Field Distribution of fuel assembly outlet greatly.And the mode of adopt intersecting is arranged, makes that can be processed into size around the discharge orifice of connecting hole A and connecting hole B consistent, and connecting hole A and connecting hole B evenly arrange.In the present invention, web joint aquifer yield everywhere is identical, can not influence the Flow Field Distribution of fuel assembly outlet, has avoided producing the problem of cross-current.
As first kind of prioritization scheme of the present invention, described discharge orifice is rectangle.On the basis that guarantees the web joint structural strength, the rectangular flow water hole can make the air line distance of connecting hole A and connecting hole B and discharge orifice nearest, thereby has improved the ratio of circulation area on the fishplate bar.
As second kind of prioritization scheme of the present invention, the side indent of described discharge orifice forms arc surface A, and the radian of arc surface A and adjacent connecting hole A, connecting hole B or the radian of discharge orifice, center are complementary.Arc surface A is set, can makes the distribution of material between discharge orifice and connecting hole A, connecting hole B or the discharge orifice, center average, do not have weak part, when taking into account the circulation area ratio, also can reduce the influence to the web joint structural strength.What can see is that on the basis that guarantees the web joint structural strength, the distance between arc surface A and connecting hole A, connecting hole B or the discharge orifice, center can be as far as possible little.
Further optimization as second kind of prioritization scheme of the present invention, the end face evagination of described discharge orifice forms arc surface B, make the discharge orifice form in the middle of the structure of the wide and edge-smoothing in narrow two ends, increased the circulation area ratio, can alleviate the edge, discharge orifice simultaneously and occur the situation that stress is concentrated easily.
As the further optimization of second kind of prioritization scheme of the present invention, it is the salient angle of straight line that the end face evagination of described discharge orifice forms both sides.This optimization has increased the circulation area ratio equally, and this salient angle extensible growth degree in the axial direction is longer.Need to prove that the top of salient angle can be circular arc, also can be straight angle or other shape.The shape at salient angle top is mainly selected according to the physical property of the material that constitutes web joint, concentrates performance material preferably for anti-stress, can preferentially select straight angle, to obtain longer development length.
Further, the adjacent described salient angle parallel sided of closing on.This optimization can make the material between the two sides evenly distribute, and makes on the web joint uniformity more of the distribution of material everywhere on the whole, improves the structural strength of web joint.What can see is, in the case, can further enlarge the area of discharge orifice, makes the intensity of web joint near the acceptable bottom line, thereby obtains maximum circulation area ratio.
As the third prioritization scheme of the present invention, on the basis of such scheme, described connecting hole A and discharge orifice, described center are crisscross arranged, and described connecting hole B is opened in and is positioned at the surrounding in the portion of described web joint center.This optimization can make the flow of the chilled water that web joint flows out reach unanimity everywhere, has further reduced the influence to the Flow Field Distribution of fuel assembly outlet.
As the 4th kind of prioritization scheme of the present invention, on the basis of such scheme, also offer discharge orifice C, discharge orifice D and discharge orifice E on the described web joint, discharge orifice C is circular port or round rectangle hole, discharge orifice C is arranged at four jiaos of described web joint and arrange by rectangular array, discharge orifice D and discharge orifice E are that two ends are the strip hole of evagination circular arc, the length that is shorter in length than discharge orifice D of discharge orifice E, and discharge orifice D and discharge orifice E are arranged at the edge of web joint.Web joint is square, if also arrange the discharge orifice according to the mode of intersecting in its edge, then the distribution of material of edge is with inhomogeneous.And web joint edge can't form the complete portion that surrounds, and also just can't offer connecting hole A and discharge orifice, center, causes the waste of web joint area.Above-mentioned optimization can make the distribution of material of web joint edge even, also takes full advantage of the area at web joint edge simultaneously, and the circulation area ratio is enlarged.
As prioritization scheme in the of the present invention the 5th, on the basis of such scheme, the axis normal of described discharge orifice A and described discharge orifice B.Under this structure, the portion that surrounds is square substantially, offers circular connecting hole A, connecting hole B or discharge orifice, center thereon, and the area of the portion of surrounding is fully used, reduced the waste to the web joint area to the full extent, made the maximization of circulation area ratio.
As the further optimization of the 5th kind of prioritization scheme of the present invention, described web joint is square, and the axis of described discharge orifice A is parallel with a diagonal line of described web joint, and the axis of described discharge orifice B is parallel with another diagonal line of described web joint.Can see, can arrange maximum discharge orifices at web joint by this arrangement mode, especially in the position near four jiaos of web joints, can increase the layout quantity of discharge orifice, improve the circulation area ratio.
In sum, advantage of the present invention and beneficial effect are:
1. the present invention can evenly arrange the discharge orifice by changing the arrangement of discharge orifice, has increased the circulation area ratio simultaneously, and it is bad to have solved last base economy, to the disadvantageous technical matters of Flow Field Distribution of fuel assembly outlet;
2. the present invention has further improved the circulation area ratio by changing the shape of discharge orifice, simultaneously, has guaranteed the structural strength of web joint;
3. by connecting hole A and discharge orifice, center are crisscross arranged, the flow of the chilled water that web joint flows out is everywhere reached unanimity, further reduced the influence to the Flow Field Distribution of fuel assembly outlet.
Description of drawings
In order to be illustrated more clearly in embodiments of the invention, will make simple explanation to the required accompanying drawing of using in the description embodiment of the invention below.Apparent, the accompanying drawing in describing below only is some embodiment that put down in writing among the present invention, to those skilled in the art, under the situation of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing.
Fig. 1 is the structural representation of nuclear fuel assembly;
Fig. 2 is the structural representation of web joint in the base on the existing fuel assembly;
Fig. 3 is cross-sectional view of the present invention;
Fig. 4 is a kind of perforate mode synoptic diagram of web joint among the present invention;
Fig. 5 is the another kind of perforate mode synoptic diagram of web joint among the present invention;
Fig. 6 is vertical view of the present invention;
Wherein, the parts title of Reference numeral correspondence is as follows:
The last base of 1-, 2-web joint, 3-coaming plate, 4-deckle board, 5-connecting hole A, 6-connecting hole B, 7-dowel hole, 8-housing screw hole, the anti-dislocation of 9-hole, the 10-lifting surface, 201-discharge orifice A, 202-discharge orifice B, 203-connecting portion, 204-surrounds portion, discharge orifice, 205-center, 206-arc surface A, 207-arc surface B, the 208-salient angle, 209-discharge orifice C, 210-discharge orifice D, 211-discharge orifice E, 212-side A, 213-side B,, the vacant portion of 214-.
Embodiment
In order to make those skilled in the art understand the present invention better, below in conjunction with the accompanying drawing in the embodiment of the invention technical scheme in the embodiment of the invention is carried out clear, complete description.Apparent, embodiment described below only is the part in the embodiment of the invention, rather than all.Based on the embodiment of the present invention's record, other all embodiment that those skilled in the art obtain under the situation of not paying creative work are all in the scope of protection of the invention.
" axis " of discharge orifice refers to pass the center line at two ends, discharge orifice, and language " axially " refers to the direction of discharge orifice axis, and term " radially " refers to the direction perpendicular to the discharge orifice axis.The discharge orifice comprises discharge orifice A201 and the discharge orifice B202 that size is identical with shape, the size of discharge orifice C209, discharge orifice D210 and discharge orifice E211 is different with discharge orifice B202 with discharge orifice A201 in some cases with shape, therefore is not included in the discharge orifice institute how.
Embodiment 1:
As shown in Figure 3 and Figure 4, base on the fuel assembly, mainly by web joint 2, be fixed on the coaming plate 3 at web joint 2 edges and the deckle board 4 that is fixed on the coaming plate 3 constitutes, offer on the web joint 2 for the connecting hole A5 that the fuel assembly guide pipe is installed with for the connecting hole B6 that gauge pipe is installed, on described web joint 2, evenly offer the discharge orifice of a plurality of strips, the discharge orifice comprises discharge orifice A201 and discharge orifice B202, has the angle greater than 0 ° between the axis of discharge orifice A201 and discharge orifice B202; On described web joint 2, form connecting portion 203 between axial two adjacent discharge orifice A201 and two discharge orifice B202; On described web joint 2, form the portion 204 that surrounds between two discharge orifice A201 of radially adjoining and two discharge orifice B202; Also offer discharge orifice, center 205 on the described web joint 2, connecting hole A5, connecting hole B6 and discharge orifice, center 205 are arranged at respectively in the portion of surrounding 204.
The discharge orifice is used for passing through chilled water.Increase the area of discharge orifice, can improve the circulation area ratio on the web joint 2, thereby reduce the pressure drop of web joint 2 both sides, consume less main pump lift, improve economy.The discharge orifice is arranged as far as possible evenly, prevented from producing cross-current when chilled water from distributing behind the base on passing through again, reduce control rod and burnable poison rod and cause the risk that lost efficacy because of the vibration abrasion.To achieve these goals, adopt the mode of intersecting that the discharge orifice is set.Can see, adopt this mode can be on the basis that guarantees web joint 2 structural strengths, as much as possible the discharge orifice is set, thereby improve the circulation area ratio, reduce pressure drop, improve economy.And this arrangement can make the discharge orifice evenly distribute, and can not produce cross-current when chilled water is distributed behind the base on passing through again, causes the risk that lost efficacy because of the vibration abrasion thereby reduced control rod and burnable poison rod.
More than be a total design of the present invention, in the practical operation, under the prerequisite that guarantees web joint 2 structural strengths, connecting portion 203 can be as far as possible little, to increase the circulation area ratio.The variation of angle can make area and the alteration of form of the portion of surrounding 204 between discharge orifice A201 and the discharge orifice B202, guaranteeing web joint 2 structural strengths, on the basis that guarantees to offer smoothly in connecting hole A5, connecting hole B6 and discharge orifice, center 205, the area that surrounds portion 204 also can be as far as possible little, to increase the circulation area ratio.
Embodiment 2:
Present embodiment on the basis of embodiment 1, in order further to improve the circulation area ratio, the preferred streams water hole be shaped as rectangle.It will be appreciated by persons skilled in the art that the rectangular flow water hole can make the air line distance of connecting hole A5 and connecting hole B6 and discharge orifice nearest, thereby improved the ratio of circulation area on the fishplate bar 2.
Embodiment 3:
Present embodiment is on the basis of embodiment 1, and as shown in Figure 4, the side indent of described discharge orifice forms arc surface A206, and the radian of arc surface A206 and adjacent connecting hole A5, connecting hole B6 or the radian of discharge orifice, center 205 are complementary.It will be understood by those skilled in the art that, arc surface A206 is set, can make the distribution of material between discharge orifice and connecting hole A5, connecting hole B6 or the discharge orifice, center 205 average, there is not weak part, when taking into account the circulation area ratio, also can reduce the influence to web joint 2 structural strengths.On the basis that guarantees web joint 2 structural strengths, the distance between arc surface A206 and connecting hole A5, connecting hole B6 or the discharge orifice, center 205 can be as far as possible little.
Embodiment 4:
Present embodiment is on the basis of embodiment 3, and as shown in Figure 4, the end face evagination of described discharge orifice forms arc surface B207.It will be appreciated by persons skilled in the art that above-mentioned improvement make the discharge orifice form in the middle of the structure of the wide and edge-smoothing in narrow two ends, increased the circulation area ratio, can alleviate the edge, discharge orifice simultaneously and occur the situation that stress is concentrated easily.By calculating, the circulation area ratio of present embodiment has risen 6.5% with respect to the existing base of going up.
Embodiment 5:
Present embodiment is on the basis of embodiment 3, and as shown in Figure 5, it is the salient angle 208 of straight line that the end face evagination of described discharge orifice forms both sides.Can see that this optimization has increased the circulation area ratio equally, and this salient angle 208 extensible growth degree in the axial direction is longer.Need to prove that the top of salient angle 208 can be circular arc, also can be straight angle or other shape.The shape at salient angle 208 tops is mainly selected according to the physical property of the material that constitutes web joint 2, concentrates performance material preferably for anti-stress, can preferentially select straight angle, to obtain longer development length.
Embodiment 6:
Present embodiment on the basis of embodiment 5, as shown in Figure 5, the parallel sided that adjacent described salient angle 208 is closed on.For clearer this optimization of explanation, in Fig. 5, select two adjacent discharge orifices, side A212 nearest on two discharge orifices is parallel with side B213, material between side A212 and the side B213 is elongated, be evenly distributed, and make on the web joint 2 uniformity more of the distribution of material everywhere on the whole, improve the structural strength of web joint 2.What can see is, in the case, can further enlarge the area of discharge orifice, makes the intensity of web joint near the acceptable bottom line, thereby obtains maximum circulation area ratio.
Embodiment 7:
Present embodiment is on the basis of above-described embodiment, and as shown in Figure 4 and Figure 5, described connecting hole A5 and discharge orifice, described center 205 are crisscross arranged, and described connecting hole B6 is opened in the portion that surrounds 204 that is positioned at described web joint 2 centers.Be crisscross arranged discharge orifice, expression center 205 around for connecting hole A5, simultaneously, around the connecting hole A5 centered by discharge orifice 205.This optimization can make the flow of the chilled water that web joint 2 flows out reach unanimity everywhere, has further reduced the influence to the Flow Field Distribution of fuel assembly outlet.
Embodiment 8;
Present embodiment is on the basis of above-described embodiment, as shown in Figure 4 and Figure 5, also offer discharge orifice C209, discharge orifice D210 and discharge orifice E211 on the described web joint 2, discharge orifice C209 is circular port or round rectangle hole, discharge orifice C209 is arranged at four jiaos of described web joint 2 and arrange by rectangular array, discharge orifice D210 and discharge orifice E211 are that two ends are the strip hole of evagination circular arc, the length that is shorter in length than discharge orifice D210 of discharge orifice E211, discharge orifice D210 and discharge orifice E211 are arranged at the edge of web joint 2.
As can be seen, web joint 2 is square from Fig. 4 and Fig. 5, if also arrange the discharge orifice according to the mode of intersecting in its edge, then the distribution of material of edge is with inhomogeneous.And web joint 2 edges can't form the complete portion that surrounds 204, also just can't offer connecting hole A5 and discharge orifice, center 205, cause the waste of web joint 2 areas.Above-mentioned optimization can make the distribution of material of web joint 2 edges even, also takes full advantage of the area at web joint 2 edges simultaneously, and the circulation area ratio is enlarged.
The arrangement of discharge orifice D210 and discharge orifice E211 as shown in Figure 4 and Figure 5.The connecting hole A5 of web joint 2 edges occupies than large space, therefore near connecting hole A5 place short discharge orifice E211 is being set.Discharge orifice A201 and discharge orifice B202 are replaced with discharge orifice D210 in position between two connecting hole A5 of web joint 2 edges, to obtain maximum circulation area ratio.
In addition, be preferably, the axis of discharge orifice D210 and discharge orifice E211 is parallel with the axis of web joint 2, and discharge orifice D210 is parallel with the side of discharge orifice E211.
In the position near 2 four angles of web joint, cancel discharge orifice A201 and discharge orifice B202, obtain vacant 214, adopt discharge orifice, two centers 205 and a connecting hole A5 to fill vacant 214 space that has more, this set has not only been obtained maximum circulation area ratio, and the layout of the web joint 2 discharge orifice D210 of edge and discharge orifice E211 is more prone to.
Embodiment 9:
Present embodiment on the basis of above-described embodiment, as shown in Figure 4 and Figure 5, the axis normal of described discharge orifice A201 and described discharge orifice B202.Under this structure, surround portion 204 and be square substantially, offer circular connecting hole A5, connecting hole B6 or discharge orifice, center 205 thereon, the area of the portion of surrounding 204 is fully used, reduced the waste to web joint 2 areas to the full extent, made the maximization of circulation area ratio.
Embodiment 10:
Present embodiment is on the basis of embodiment 9, as shown in Figure 4 and Figure 5, described web joint 2 is square, and the axis of described discharge orifice A201 is parallel with a diagonal line of described web joint 2, and the axis of described discharge orifice B202 is parallel with another diagonal line of described web joint 2.Can see, can arrange maximum discharge orifices at web joint 2 by this arrangement mode, especially in the position near 2 four jiaos of web joints, can increase the layout quantity of discharge orifice, improve the circulation area ratio.
Embodiment 11:
Base on the fuel assembly, mainly by square web joint 2, be fixed on the coaming plate 3 at web joint 2 edges and the deckle board 4 that is fixed on the coaming plate 3 constitutes, offer on the web joint 2 for the connecting hole A5 that the fuel assembly guide pipe is installed with for the connecting hole B6 that gauge pipe is installed, on described web joint 2, evenly offer a plurality of elongated discharge orifices on the whole, the discharge orifice comprises discharge orifice A201 and discharge orifice B202, has the angle greater than 0 ° between the axis of discharge orifice A201 and discharge orifice B202; On described web joint 2, form connecting portion 203 between axial two adjacent discharge orifice A201 and two discharge orifice B202; On described web joint 2, form the portion 204 that surrounds between two discharge orifice A201 of radially adjoining and two discharge orifice B202; Also offer discharge orifice, center 205 on the described web joint 2, connecting hole A5, connecting hole B6 and discharge orifice, center 205 are arranged at respectively in the portion of surrounding 204.The axis normal of described discharge orifice A201 and described discharge orifice B202, the axis of described discharge orifice A201 is parallel with a diagonal line of described web joint 2, and the axis of described discharge orifice B202 is parallel with another diagonal line of described web joint 2.The side indent of described discharge orifice forms arc surface A206, and the radian of arc surface A206 and adjacent connecting hole A5, connecting hole B6 or the radian of discharge orifice, center 205 are complementary.It is the salient angle 208 of straight line that the end face evagination of described discharge orifice forms both sides.The parallel sided that adjacent described salient angle 208 is closed on.Also offer discharge orifice C209, discharge orifice D210 and discharge orifice E211 on the described web joint 2, discharge orifice C209 is circular port or round rectangle hole, discharge orifice C209 is arranged at four jiaos of described web joint 2 and arrange by rectangular array, discharge orifice D210 and discharge orifice E211 are that two ends are the strip hole of evagination circular arc, the length that is shorter in length than discharge orifice D210 of discharge orifice E211, discharge orifice D210 and discharge orifice E211 are arranged at the edge of web joint 2.
The circulation area of present embodiment has risen 7.8% with respect to the existing base of going up.
Embodiment 12:
Present embodiment as Fig. 3 and shown in Figure 6, arranges dowel hole 7 at two diagonal angles of described deckle board 4 on the basis of above-described embodiment, the present invention can be cooperated with the register pin of upper core plate.Two other diagonal angle in deckle board 4 upper surfaces is respectively arranged with housing screw hole 8, and it is used for the installing plate spring, realizes the fuel assembly axial compression.Deckle board 4 upper surfaces also are provided with an anti-dislocation hole 9, and anti-dislocation hole 9 is positioned on any one angle that is provided with housing screw hole 8, and it is used for recognizer component in the orientation of reactor core, and compatible with lifting device.The number in above-mentioned dowel hole 7, housing screw hole 8 and anti-dislocation the hole 9 and position is set all is not limited thereto, can be according to the actual conditions otherwise designed, for example: dowel hole 7 numbers and the position is set arranges according to register pin number and the position of upper core plate cooperate with register pin as long as satisfy its position.The inside of described deckle board 4 is provided with lifting surface 10, the lifting of convenient fuel assembly.
In order to make those skilled in the art more clearly understand the present invention, now processing technology of the present invention is described.
Then, coaming plate 3 is positioned over the upper surface of web joint 2, again deckle board 4 is positioned over the upper surface of coaming plate 3, and by the frock clamp positioning and fixing;
At last, web joint 2, coaming plate 3 and deckle board 4 are welded into integral body.
What those skilled in the art will appreciate that is that many variations and the structure that can further selectively use above a plurality of exemplary embodiments descriptions form other possible embodiment of the present invention.Consider those skilled in the art's ability, this paper does not provide in detail or describes the possible repeated content of institute, but all combinations that otherwise comprise and possibility embodiment are the application's a part.
Claims (10)
1. base on the fuel assembly, mainly by web joint (2), the deckle board (4) that is fixed on the coaming plate (3) at web joint (2) edge and is fixed on the coaming plate (3) constitutes, offer on the web joint (2) for the connecting hole A(5 that the fuel assembly guide pipe is installed) and for the connecting hole B(6 that gauge pipe is installed), it is characterized in that: the discharge orifice that on described web joint (2), evenly offers a plurality of strips, the discharge orifice comprises discharge orifice A(201) and discharge orifice B(202), discharge orifice A(201) and discharge orifice B(202) axis between have angle greater than 0 °;
On described web joint (2), axial two adjacent discharge orifice A(201) and two discharge orifice B(202) between form connecting portion (203); On described web joint (2), two discharge orifice A(201 of radially adjoining) and two discharge orifice B(202) between form the portion (204) that surrounds;
Also offer discharge orifice, center (205) on the described web joint (2), connecting hole A(5), connecting hole B(6) and discharge orifice, center (205) be arranged at respectively in the portion of surrounding (204).
2. base on the fuel assembly according to claim 1, it is characterized in that: described discharge orifice is rectangle.
3. base on the fuel assembly according to claim 1, it is characterized in that: the side indent of described discharge orifice forms arc surface A(206), arc surface A(206) radian and adjacent connecting hole A(5), connecting hole B(6) or the radian of discharge orifice, center (205) be complementary.
4. base on the fuel assembly according to claim 3 is characterized in that: the end face evagination formation arc surface B(207 of described discharge orifice).
5. base on the fuel assembly according to claim 3 is characterized in that: it is the salient angle (208) of straight line that the end face evagination of described discharge orifice forms both sides.
6. base on the fuel assembly according to claim 5 is characterized in that: the parallel sided that adjacent described salient angle (208) is closed on.
7. base on the fuel assembly according to claim 1, it is characterized in that: described connecting hole A(5) and discharge orifice, described center (205) be crisscross arranged described connecting hole B(6) be opened in the portion that surrounds (204) that is positioned at described web joint (2) center.
8. base on the fuel assembly according to claim 1, it is characterized in that: described web joint also offers discharge orifice C(209 on (2)), discharge orifice D(210) and discharge orifice E(211), discharge orifice C(209) is circular port or round rectangle hole, discharge orifice C(209) is arranged at four jiaos of described web joint (2) and arrange by rectangular array, discharge orifice D(210) and discharge orifice E(211) be that two ends are the strip hole of evagination circular arc, discharge orifice E(211) be shorter in length than discharge orifice D(210) length, discharge orifice D(210) and discharge orifice E(211) be arranged at the edge of web joint (2).
9. according to base on any described fuel assembly in the claim 1 ~ 8, it is characterized in that: described discharge orifice A(201) and described discharge orifice B(202) axis normal.
10. base on the fuel assembly according to claim 9, it is characterized in that: described web joint (2) is square, described discharge orifice A(201) axis is parallel with a diagonal line of described web joint (2), described discharge orifice B(202) axis parallel with another diagonal line of described web joint (2).
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101441990A CN103247352A (en) | 2013-04-24 | 2013-04-24 | Upper pipe seat of fuel component |
| CN201310352982.6A CN103413576B (en) | 2013-04-24 | 2013-08-14 | Upper pipe seat of fuel component |
| CN201320495146.9U CN203376983U (en) | 2013-04-24 | 2013-08-14 | Upper tube base of fuel assembly |
| PCT/CN2013/089190 WO2014173139A1 (en) | 2013-04-24 | 2013-12-12 | Fuel component upper tube socket |
| GB1513652.6A GB2524456B (en) | 2013-04-24 | 2013-12-12 | Fuel component upper tube socket |
| ARP140101608A AR095871A1 (en) | 2013-04-24 | 2014-04-15 | UPPER NOZZLE FOR NUCLEAR FUEL APPLIANCE |
| ZA2015/05858A ZA201505858B (en) | 2013-04-24 | 2015-08-14 | Fuel component upper tube socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101441990A CN103247352A (en) | 2013-04-24 | 2013-04-24 | Upper pipe seat of fuel component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103247352A true CN103247352A (en) | 2013-08-14 |
Family
ID=48926821
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101441990A Pending CN103247352A (en) | 2013-04-24 | 2013-04-24 | Upper pipe seat of fuel component |
| CN201310352982.6A Active CN103413576B (en) | 2013-04-24 | 2013-08-14 | Upper pipe seat of fuel component |
| CN201320495146.9U Expired - Lifetime CN203376983U (en) | 2013-04-24 | 2013-08-14 | Upper tube base of fuel assembly |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310352982.6A Active CN103413576B (en) | 2013-04-24 | 2013-08-14 | Upper pipe seat of fuel component |
| CN201320495146.9U Expired - Lifetime CN203376983U (en) | 2013-04-24 | 2013-08-14 | Upper tube base of fuel assembly |
Country Status (5)
| Country | Link |
|---|---|
| CN (3) | CN103247352A (en) |
| AR (1) | AR095871A1 (en) |
| GB (1) | GB2524456B (en) |
| WO (1) | WO2014173139A1 (en) |
| ZA (1) | ZA201505858B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413575A (en) * | 2013-04-24 | 2013-11-27 | 中国核动力研究设计院 | Reactor fuel assembly pipe mounting seat |
| CN103413576A (en) * | 2013-04-24 | 2013-11-27 | 中国核动力研究设计院 | Fuel assembly pipe mounting seat |
| CN113223737A (en) * | 2021-04-01 | 2021-08-06 | 上海核工程研究设计院有限公司 | Upper pipe base of low-pressure depressurization water reactor fuel assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935281A (en) * | 2015-12-31 | 2017-07-07 | 中核建中核燃料元件有限公司 | A kind of upper pipe seat of fuel component |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801453A (en) * | 1972-02-11 | 1974-04-02 | Transfer Systems | Fuel assembly for power generating nuclear reactor |
| US4427624A (en) * | 1981-03-02 | 1984-01-24 | Westinghouse Electric Corp. | Composite nozzle design for reactor fuel assembly |
| US4716016A (en) * | 1985-03-04 | 1987-12-29 | Westinghouse Electric Corp. | Universal fuel assembly construction for a nuclear reactor |
| US5019016A (en) * | 1990-04-10 | 1991-05-28 | Gkn Automotive Inc. | Anti-shudder tripod constant velocity universal joint |
| US5363423A (en) * | 1993-08-19 | 1994-11-08 | Westinghouse Electric Corporation | Quick release top nozzle assembly |
| FR2744556B1 (en) * | 1996-02-02 | 1998-04-24 | Framatome Sa | NUCLEAR FUEL ASSEMBLY HAVING IMPROVED TOP TIP |
| US7889829B2 (en) * | 2004-09-02 | 2011-02-15 | Westinghouse Electric Company Llc | Nuclear fuel assembly protective grid |
| CN201927363U (en) * | 2011-01-14 | 2011-08-10 | 中科华核电技术研究院有限公司 | Top tube seat for low pressure drop fuel assembly |
| CN102592687A (en) * | 2011-01-14 | 2012-07-18 | 中科华核电技术研究院有限公司 | Low-pressure-drop fuel assembly upper tube seat |
| CN202650554U (en) * | 2012-07-17 | 2013-01-02 | 中国核动力研究设计院 | Nuclear fuel component upper-pipe seat convenient to process and manufacture |
| CN202855315U (en) * | 2012-09-18 | 2013-04-03 | 中科华核电技术研究院有限公司 | Lower tube base and bottom device of light-water-reactor nuclear fuel assembly |
| CN103247352A (en) * | 2013-04-24 | 2013-08-14 | 中国核动力研究设计院 | Upper pipe seat of fuel component |
-
2013
- 2013-04-24 CN CN2013101441990A patent/CN103247352A/en active Pending
- 2013-08-14 CN CN201310352982.6A patent/CN103413576B/en active Active
- 2013-08-14 CN CN201320495146.9U patent/CN203376983U/en not_active Expired - Lifetime
- 2013-12-12 GB GB1513652.6A patent/GB2524456B/en active Active
- 2013-12-12 WO PCT/CN2013/089190 patent/WO2014173139A1/en active Application Filing
-
2014
- 2014-04-15 AR ARP140101608A patent/AR095871A1/en active IP Right Grant
-
2015
- 2015-08-14 ZA ZA2015/05858A patent/ZA201505858B/en unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413575A (en) * | 2013-04-24 | 2013-11-27 | 中国核动力研究设计院 | Reactor fuel assembly pipe mounting seat |
| CN103413576A (en) * | 2013-04-24 | 2013-11-27 | 中国核动力研究设计院 | Fuel assembly pipe mounting seat |
| WO2014173139A1 (en) * | 2013-04-24 | 2014-10-30 | 中国核动力研究设计院 | Fuel component upper tube socket |
| GB2524456A (en) * | 2013-04-24 | 2015-09-23 | Nuclear Power Inst China | Fuel component upper tube socket |
| CN103413576B (en) * | 2013-04-24 | 2016-03-30 | 中国核动力研究设计院 | Upper pipe seat of fuel component |
| GB2524456B (en) * | 2013-04-24 | 2020-01-29 | Nuclear Power Inst China | Fuel component upper tube socket |
| CN113223737A (en) * | 2021-04-01 | 2021-08-06 | 上海核工程研究设计院有限公司 | Upper pipe base of low-pressure depressurization water reactor fuel assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103413576B (en) | 2016-03-30 |
| GB2524456A (en) | 2015-09-23 |
| GB2524456B (en) | 2020-01-29 |
| GB201513652D0 (en) | 2015-09-16 |
| WO2014173139A1 (en) | 2014-10-30 |
| AR095871A1 (en) | 2015-11-18 |
| CN203376983U (en) | 2014-01-01 |
| CN103413576A (en) | 2013-11-27 |
| ZA201505858B (en) | 2018-11-28 |
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Application publication date: 20130814 |