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WO2014173139A1 - Douille tubulaire supérieure pour composant combustible - Google Patents

Douille tubulaire supérieure pour composant combustible Download PDF

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Publication number
WO2014173139A1
WO2014173139A1 PCT/CN2013/089190 CN2013089190W WO2014173139A1 WO 2014173139 A1 WO2014173139 A1 WO 2014173139A1 CN 2013089190 W CN2013089190 W CN 2013089190W WO 2014173139 A1 WO2014173139 A1 WO 2014173139A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
connecting plate
water
flow
holes
Prior art date
Application number
PCT/CN2013/089190
Other languages
English (en)
Chinese (zh)
Inventor
黄春兰
雷涛
茹俊
青涛
蒲曾坪
肖忠
焦拥军
雍泾
张�林
程华旸
Original Assignee
中国核动力研究设计院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国核动力研究设计院 filed Critical 中国核动力研究设计院
Priority to GB1513652.6A priority Critical patent/GB2524456B/en
Publication of WO2014173139A1 publication Critical patent/WO2014173139A1/fr
Priority to ZA2015/05858A priority patent/ZA201505858B/en

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/322—Means to influence the coolant flow through or around the bundles
    • 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
    • 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

Definitions

  • a nuclear fuel assembly is composed of a plurality of fuel rods, a guide tube, a positioning grid, and upper and lower tubes.
  • the structure is shown in Figure 1.
  • the upper header 1 serves as a key component to laterally position the fuel assembly, to withstand and transmit the pressing force, to provide an outlet cavity for the coolant, to provide an interface for the fuel assembly lifting, and to prevent the fuel rod from being ejected.
  • Some fuel assemblies are mainly composed of a connecting plate, a surrounding plate and a frame plate.
  • a connecting plate of a conventional upper header is shown.
  • the connecting plate is substantially square, and a circular instrument tube connecting hole and a guiding tube connecting hole and a plurality of elongated water flowing holes are formed in the connecting plate.
  • the existing upper header has the following problems:
  • the arrangement of the flow holes is not good, so the number of flow holes is small, which directly leads to a lower proportion of the flow area on the connection plate, and the pressure drop on the lower side of the connection plate is larger. In this case, more consumption is required.
  • the main pump head can make the cooling water flow meet the requirements, and the economy is not good;
  • the flow holes are asymmetrically arranged, which has an adverse effect on the flow field distribution at the outlet of the fuel assembly.
  • the upper part of the fuel assembly is mainly composed of a connecting plate, a surrounding plate fixed to the edge of the connecting plate and a frame plate fixed on the surrounding plate, and the connecting plate is provided with a connecting hole A for mounting the fuel assembly guiding pipe and for installing the instrument a connecting hole B of the pipe, wherein a plurality of elongated water-flow holes are uniformly formed on the connecting plate, the water-flow hole includes a water-flow hole A and a water-flow hole B, and there is more than 0° between the axes of the water-flow hole A and the water-flow hole B An angle formed between the two axially adjacent water holes A and the two water holes B on the connecting plate; on the connecting plate, two radially adjacent water holes A A surrounding portion is formed between the two water flowing holes B.
  • the connecting plate is further provided with a central water flowing hole, and the connecting hole A, the connecting hole B and the central flowing water hole are respectively disposed on the surrounding portion.
  • the main technical problem to be solved is how to more uniformly arrange the flow holes with a larger total area.
  • the inventors divided the flow holes into non-parallel flow holes A and flow holes B, and arranged the flow holes A and the flow holes B as a whole in an intersecting manner.
  • the way of the cross arrangement can balance the arrangement of the connection hole A, the connection hole B and the central flow hole as much as possible, and arrange the flow holes as much as possible to increase the proportion of the flow area on the connection plate.
  • the connecting portion functions to maintain the integrity of the connecting plate.
  • the area of the connecting portion can be minimized, so that the proportion of the flow area on the connecting plate is maximized.
  • the parallel arrangement in the prior art can only fill the remaining space on the connection plate by setting different sizes of flow holes when implemented.
  • the arrangement of the water holes cannot be symmetrical, which results in uneven water output through the connecting plates, which greatly affects the flow field distribution at the outlet of the fuel assembly.
  • the flow holes surrounding the connection hole A and the connection hole B can be processed to be uniform in size, and the connection holes A and the connection holes B are evenly arranged.
  • the amount of water discharged from the connecting plates is the same, which does not affect the flow field distribution at the outlet of the fuel assembly, and avoids the problem of lateral flow.
  • the flow hole is rectangular.
  • the rectangular flow hole can make the linear distance between the connecting hole A and the connecting hole B and the flowing hole Recently, the proportion of the flow area on the splicing plate has been increased.
  • the side surface of the flow hole is concavely formed to form a circular arc surface A, and the curvature of the circular arc surface A matches the curvature of the adjacent connecting hole A, the connecting hole B or the central flowing water hole.
  • the end surface of the flow hole is convexly formed to form a circular arc surface B, so that the water flow hole forms a structure with a narrow inner end and a smooth edge, which increases the flow area ratio and can It relieves the stress concentration at the edge of the flow hole.
  • the end faces of the flow holes are convexly formed into lobes having straight lines on both sides.
  • This optimization also increases the flow area ratio, and the lobes have a longer extendable length in the axial direction.
  • the top of the lobes may be a circular arc shape, or may be a straight angle or other shape.
  • the shape of the top of the lobes is mainly selected according to the physical properties of the materials constituting the connecting plate. For materials with better stress concentration resistance, a straight angle can be preferentially selected to obtain a longer extension length.
  • adjacent sides of the adjacent lobes are parallel.
  • the optimization can evenly distribute the material between the two sides, and the distribution of the materials on the connecting plate is more uniform and uniform, and the structural strength of the connecting plate is improved. It can be seen that in this case, it is possible to further enlarge the area of the flow hole so that the strength of the connecting plate is close to the acceptable bottom line, thereby obtaining the maximum flow area ratio.
  • connection hole A and the center water flow hole are alternately arranged, and the connection hole B is opened on a surrounding portion at a center position of the connection plate.
  • the connecting board is further The flow hole C, the flow hole D and the flow hole E are opened, and the flow hole C is a circular hole or a rounded rectangular hole, and the flow hole C is disposed at the four corners of the connecting plate and arranged in a rectangular array, the flow hole D and the flowing water
  • the hole E is a long hole having a convex arc at both ends, and the length of the water flow hole E is shorter than the length of the water flow hole D, and the water flow hole D and the water flow hole E are provided at the edge of the connection plate.
  • the webs are square, and if the water holes are also arranged in an intersecting manner at their edges, the material distribution at the edges will be uneven.
  • the complete surrounding portion cannot be formed at the edge of the connecting plate, and the connecting hole A and the central flowing water hole cannot be opened, resulting in waste of the connecting plate area.
  • the above optimization can make the material distribution at the edge of the connecting plate uniform, and also make full use of the area of the edge of the connecting plate to enlarge the flow area ratio.
  • the flow holes A and the flow holes B are perpendicular to the axis.
  • the surrounding portion is substantially square, and a circular connecting hole, a connecting hole B or a central flowing water hole is formed thereon, so that the area of the surrounding portion can be fully utilized, and the connecting plate is minimized.
  • the waste of area maximizes the proportion of circulation area.
  • the connecting plate is square, the axis of the water flow hole A is parallel to a diagonal line of the connecting plate, and the axis of the water flowing hole B is The other diagonal of the connecting plate is parallel. It can be seen that by this arrangement, the most flow holes can be arranged on the connecting plate, especially at the positions near the four corners of the connecting plate, the number of the flow holes can be increased, and the flow area ratio can be increased.
  • the invention can change the arrangement of the flow holes so that the flow holes can be evenly arranged, and at the same time increase the proportion of the flow area, and solve the technical problem that the upper tube seat is not economically good and the flow field distribution at the outlet of the fuel assembly is unfavorable;
  • the invention improves the flow area ratio by changing the shape of the flow hole, and at the same time, ensures the structural strength of the connecting plate;
  • connection hole A By staggering the connection hole A and the central flow hole, the flow rate of the cooling water flowing out from the connection plate tends to be uniform, and the influence of the flow field distribution on the outlet of the fuel assembly is further reduced.
  • Figure 1 is a schematic view showing the structure of a nuclear fuel assembly
  • FIG. 2 is a schematic structural view of a connecting plate in a pipe socket of a conventional fuel assembly
  • Figure 3 is a schematic cross-sectional view of the present invention.
  • Figure 4 is a schematic view showing a manner of opening a connecting plate of the present invention.
  • Figure 5 is a schematic view showing another opening mode of the connecting plate of the present invention.
  • Figure 6 is a plan view of the present invention.
  • the "axis" of the flow hole refers to the center line passing through the ends of the flow hole, and the term “axial” refers to the flow hole.
  • the flow hole includes a flow hole A201 and a flow hole B202 having the same size and shape.
  • the size and shape of the flow hole C209, the flow hole D210, and the flow hole E211 are different from the flow hole A201 and the flow hole B202 in some cases, and thus are not included in the flowing water. In the range indicated by the hole.
  • the upper block of the fuel assembly is mainly composed of a connecting plate 2, a supporting plate 3 fixed to the edge of the connecting plate 2, and a frame plate 4 fixed to the surrounding plate 3.
  • the connecting plate 2 is provided with useful a connecting hole A5 for mounting the fuel assembly guide tube and a connecting hole B6 for mounting the instrument tube, and a plurality of elongated water-flow holes are uniformly formed on the connecting plate 2, and the water-flow hole includes a water-flow hole A201 and a water-flow hole B202.
  • An angle greater than 0° exists between the axis of the flow hole A201 and the flow hole B202.
  • a connecting portion 203 is formed between the two axially adjacent water holes A201 and the two water holes B202.
  • a connecting portion 204 is formed between the two adjacent water-flow holes A201 and the two water-flow holes B202 on the connecting plate 2; the connecting plate 2 is further provided with a central flow hole 205, the connecting hole A5, The connection hole B6 and the center flow hole 205 are respectively disposed on the surrounding portion 204.
  • the flow holes are used to pass the cooling water. Increasing the area of the flow hole can increase the proportion of the flow area on the connecting plate 2, thereby reducing the pressure drop on both sides of the connecting plate 2, consuming less main pump lift, and improving economy.
  • the flow holes are arranged as evenly as possible to prevent lateral flow when the cooling water is distributed after passing through the upper pipe seat, thereby reducing the risk of failure of the control rod and the combustible poison rod due to vibration abrasion.
  • the water holes are arranged in an intersecting manner. It can be seen that in this way, as long as the structural strength of the connecting plate 2 is ensured, as many flow holes as possible can be provided, thereby increasing the proportion of the flow area, reducing the pressure drop, and improving the economy.
  • this arrangement enables uniform distribution of the flow holes, so that the cooling water does not generate lateral flow when it is redistributed through the upper header, thereby reducing the control rod and the combustible poison. The risk of failure of the rod due to vibrational abrasion.
  • the connecting portion 203 can be as small as possible to increase the flow area ratio.
  • the change of the angle between the flow hole A201 and the flow hole B202 can change the area and shape of the surrounding portion 204, and ensure the structural strength of the connecting plate 2, and ensure that the connecting hole A5, the connecting hole B6 and the central flow hole 205 can be smoothly opened.
  • the area of the surrounding portion 204 can also be as small as possible to increase the flow area ratio.
  • the shape of the flow hole is a rectangle. It will be understood by those skilled in the art that the rectangular flow holes can make the connection holes A5 and the connection holes B6 closest to the flow holes, thereby increasing the proportion of the flow area on the plate 2.
  • the side surface of the water pipe is concavely formed with a circular arc surface A206, and the arc of the circular arc surface A206 is adjacent to the adjacent connecting hole A5, the connecting hole B6 or the center.
  • the arc of the flow hole 205 is matched. It can be understood by those skilled in the art that the arc surface A206 can be arranged to make the material distribution between the water injection hole and the connection hole A5, the connection hole B6 or the central flow hole 205 more uniform, and there is no weak part, and the ratio of the flow area is balanced. At the same time, the influence on the structural strength of the connecting plate 2 can also be reduced. On the basis of ensuring the structural strength of the connecting plate 2, the distance between the circular arc surface A206 and the connecting hole A5, the connecting hole B6 or the central flowing water hole 205 can be as small as possible.
  • the end surface of the flow hole is convexly formed to form a circular arc surface B207. It will be understood by those skilled in the art that the above improvements cause the flow holes to form in the middle.
  • the narrow width and smooth edge structure increases the proportion of the flow area and at the same time relieves the stress concentration at the edge of the flow hole.
  • the flow area ratio of the present embodiment is increased by 6.5% with respect to the existing upper header.
  • the end faces of the water holes are convexly formed into lobes 208 having straight lines on both sides. It can be seen that this optimization also increases the flow area ratio, and the lobes 208 have a longer extendable length in the axial direction.
  • the top of the lobe 208 may be a circular arc shape, or may be a straight angle or other shape.
  • the shape of the top of the lobes 208 is mainly selected according to the physical properties of the materials constituting the connecting plate 2. For materials having better stress concentration resistance, a straight angle can be preferentially selected to obtain a longer extending length.
  • This embodiment is based on the fifth embodiment.
  • adjacent sides of the adjacent ribs 208 are parallel.
  • two adjacent flow holes are selected, the two sides of the water holes are parallel to the nearest side A212 and the side B213, and the material between the side A212 and the side B213 is elongated.
  • the distribution is uniform, and the distribution of the materials on the connecting plate 2 is more uniform and uniform as a whole, and the structural strength of the connecting plate 2 is improved. It can be seen that in this case, it is possible to enlarge the area of the flow hole so that the strength of the connecting plate is close to the acceptable bottom line, thereby obtaining the maximum flow area ratio.
  • the present embodiment is based on the above embodiment.
  • the connecting hole A5 and the central water flowing hole 205 are alternately arranged, and the connecting hole B6 is opened at the center of the connecting plate 2.
  • the staggered arrangement indicates that the circumference of the central flow hole 205 is the connection hole A5, At the same time, the circumference of the connection hole A5 is the center flow hole 205. This optimization can make the flow rate of the cooling water flowing out of the connecting plate 2 tend to be uniform, and further reduces the influence on the flow field distribution at the outlet of the fuel assembly.
  • the connecting plate 2 is further provided with a water flowing hole C209, a water flowing hole D210 and a water flowing hole E211.
  • the water flowing hole C209 is a circular hole or a circle.
  • An angled rectangular hole, a flow hole C209 is disposed at four corners of the connecting plate 2 and arranged in a rectangular array, and the water flowing hole D210 and the water flowing hole E211 are long holes with outer convex arcs at both ends, and the length of the water flowing hole E211 is shorter than The length of the flow hole D210, the flow hole D210 and the flow hole E211 are provided at the edge of the connecting plate 2.
  • the web 2 is square, and if the water holes are also arranged at the edges thereof in a crosswise manner, the material distribution at the edges will be uneven. Moreover, the complete surrounding portion 204 cannot be formed at the edge of the connecting plate 2, so that the connecting hole A5 and the center water flowing hole 205 cannot be opened, resulting in waste of the area of the connecting plate 2.
  • the above optimization can make the material distribution at the edge of the connecting plate 2 uniform, and also make full use of the area of the edge of the connecting plate 2, so that the flow area ratio can be enlarged.
  • the arrangement of the flow hole D210 and the flow hole E211 is as shown in Figs. 4 and 5.
  • the connecting hole A5 at the edge of the connecting plate 2 occupies a large space, so a short water hole E211 is provided near the connecting hole A5.
  • the flow hole A201 and the flow hole B202 are replaced by the water holes D210 to obtain the maximum flow area ratio.
  • the axis of the flow hole D210 and the flow hole E211 are parallel to the central axis of the connecting plate 2, and the side of the flow hole D210 and the flow hole E211 are parallel.
  • the present embodiment is based on the above embodiment.
  • the flow holes A201 and the flow holes B202 are perpendicular to the axis.
  • the surrounding portion 204 is substantially square, and a circular connecting hole A5, a connecting hole B6 or a central water flowing hole 205 is formed thereon, so that the area of the surrounding portion 204 can be fully utilized, and the width is minimized.
  • the waste of the area of the connecting plate 2 maximizes the proportion of the flow area.
  • the embodiment is based on Embodiment 9, as shown in FIG. 4 and FIG. 5, the connecting plate 2 is square, and the axis of the water flowing hole A201 is parallel to a diagonal line of the connecting plate 2, The axis of the flow hole B202 is parallel to the other diagonal line of the connecting plate 2. It can be seen that by this arrangement, the largest number of water holes can be arranged on the connecting plate 2, especially at a position close to the four corners of the connecting plate 2, the number of the water holes can be increased, and the flow area ratio can be increased.
  • the upper assembly of the fuel assembly is mainly composed of a square connecting plate 2, a surrounding plate 3 fixed to the edge of the connecting plate 2, and a frame plate 4 fixed to the surrounding plate 3.
  • the connecting plate 2 is provided with a connection for mounting the fuel assembly guiding tube.
  • the hole A5 and the connecting hole B6 for mounting the instrument tube are uniformly provided with a plurality of flowing water holes integrally formed on the connecting plate 2, and the water flowing holes include a water flowing hole A201 and a water flowing hole B202, and the water flowing hole A201 and There is an angle greater than 0° between the axes of the flow holes B202; on the connecting plate 2, a connecting portion 203 is formed between the two axially adjacent water holes A201 and the two water holes B202; On the plate 2, between the two radially adjacent water holes A201 and the two water holes B202 The connecting plate 2 is further provided with a central flow hole 205, and the connecting hole A5, the connecting hole B6 and the central flowing water hole 205 are respectively disposed on the surrounding portion 204.
  • the flow hole A201 is perpendicular to the axis of the flow hole B202, the axis of the flow hole A201 is parallel to a diagonal line of the connecting plate 2, and the axis of the flow hole B202 is different from the connecting plate 2 One diagonal is parallel.
  • the side surface of the water flow hole is concavely formed to form a circular arc surface A206, and the curvature of the circular arc surface A206 matches the curvature of the adjacent connection hole A5, the connection hole B6 or the central flow hole 205.
  • the end faces of the flow holes are convexly formed to form lobes 208 having straight lines on both sides. Adjacent sides of the lobes 208 are adjacent to each other.
  • the connecting plate 2 is further provided with a water flowing hole C209, a water flowing hole D210 and a water flowing hole E211.
  • the water flowing hole C209 is a circular hole or a rounded rectangular hole, and the water flowing hole C209 is disposed at four corners of the connecting plate 2 and arranged in a rectangular array.
  • the water flow hole D210 and the water flow hole E211 are long holes with outer convex arcs at both ends, the length of the water flow hole E211 is shorter than the length of the water flow hole D210, and the water flow hole D210 and the water flow hole E211 are disposed at the edge of the connection plate 2 .
  • the flow area of this embodiment is increased by 7.8% with respect to the existing upper header.
  • positioning pin holes 7 are provided on two opposite corners of the frame plate 4, so that the present invention can be used with the positioning pin of the upper core plate.
  • On the other two opposite corners of the upper end surface of the frame plate 4 are respectively provided with pressing screw holes 8 for mounting the leaf springs to achieve axial compression of the fuel assembly.
  • the upper end surface of the frame plate 4 is further provided with an anti-missing hole 9 which is located at any corner where the pressing screw hole 8 is provided for identifying the orientation of the component in the core and is compatible with the lifting tool.
  • the number of the positioning pin hole 7, the pressing screw hole 8 and the misalignment preventing hole 9 and the setting position are not limited thereto, and may be separately designed according to actual conditions, for example: the number of positioning pin holes 7 and the setting position according to the positioning of the upper core plate The number of pins and the location are set as long as their position is met and The pin can be matched.
  • the interior of the frame plate 4 is provided with a lifting surface 10 for facilitating the lifting of the fuel assembly.
  • the panel 3 is placed on the upper end surface of the connecting plate 2, and then the frame plate 4 is placed on the upper end surface of the panel 3, and is fixed by the fixture;
  • connecting plate 2 the surrounding plate 3 and the frame plate 4 are welded integrally.

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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

L'invention concerne une douille tubulaire supérieure pour composant combustible principalement formée d'un panneau de connexion (2), d'un panneau périphérique (3) fixé à un bord du panneau de connexion (2) et d'un panneau de cadre (4) fixé sur le panneau périphérique (3). Un trou de connexion A (5) pour installer un tube de guidage de composant combustible et un trou de connexion B (6) pour installer un tube de mesure sont ouverts sur le panneau de connexion (2). Une pluralité de trous de circulation d'eau dans une forme globalement en bande longue sont ouverts de manière régulière sur le panneau de connexion (2). Les trous de circulation d'eau comprennent un trou de circulation d'eau A (201) et un trou de circulation d'eau B (202), et il existe un angle inclus supérieur à 0° entre les lignes axiales du trou de circulation d'eau A (201) et du trou de circulation d'eau B (202). Les avantages et les effets favorables de la douille tubulaire supérieure résident dans le fait que la modification de la forme et de la disposition des trous d'écoulement d'eau permet de disposer uniformément les trous d'écoulement d'eau tout en augmentant une part de surface d'écoulement, ce qui résout les problèmes techniques de faible rentabilité économique d'une douille tubulaire supérieure et de distribution indésirable du champ d'écoulement de sorties de composants combustibles.
PCT/CN2013/089190 2013-04-24 2013-12-12 Douille tubulaire supérieure pour composant combustible WO2014173139A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1513652.6A GB2524456B (en) 2013-04-24 2013-12-12 Fuel component upper tube socket
ZA2015/05858A ZA201505858B (en) 2013-04-24 2015-08-14 Fuel component upper tube socket

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013101441990A CN103247352A (zh) 2013-04-24 2013-04-24 燃料组件上管座
CN201310144199.0 2013-04-24

Publications (1)

Publication Number Publication Date
WO2014173139A1 true WO2014173139A1 (fr) 2014-10-30

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ID=48926821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/089190 WO2014173139A1 (fr) 2013-04-24 2013-12-12 Douille tubulaire supérieure pour composant combustible

Country Status (5)

Country Link
CN (3) CN103247352A (fr)
AR (1) AR095871A1 (fr)
GB (1) GB2524456B (fr)
WO (1) WO2014173139A1 (fr)
ZA (1) ZA201505858B (fr)

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CN103247353A (zh) * 2013-04-24 2013-08-14 中国核动力研究设计院 反应堆燃料组件上管座
CN103247352A (zh) * 2013-04-24 2013-08-14 中国核动力研究设计院 燃料组件上管座
CN106935281A (zh) * 2015-12-31 2017-07-07 中核建中核燃料元件有限公司 一种燃料组件上管座
CN113223737B (zh) * 2021-04-01 2024-06-18 上海核工程研究设计院股份有限公司 一种低压降压水堆燃料组件上管座

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GB2524456B (en) 2020-01-29
AR095871A1 (es) 2015-11-18
CN103247352A (zh) 2013-08-14
GB2524456A (en) 2015-09-23
CN103413576A (zh) 2013-11-27

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