CN101615435B - Storage rack assembly for storing nuclear fuel elements - Google Patents

Storage rack assembly for storing nuclear fuel elements Download PDF

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Publication number
CN101615435B
CN101615435B CN200910150485.1A CN200910150485A CN101615435B CN 101615435 B CN101615435 B CN 101615435B CN 200910150485 A CN200910150485 A CN 200910150485A CN 101615435 B CN101615435 B CN 101615435B
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storing
storage
substrate
rack assembly
support
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CN101615435A (en
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S·基尔博维奇
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CCI AG
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CCI AG
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/07—Storage racks; Storage pools
    • 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)
  • Warehouses Or Storage Devices (AREA)

Abstract

The invention relates to a storage rack assembly (1) for storing nuclear fuel elements, which comprises at least two storage racks (1<I-IV>) respectively comprising a plurality of channels which are mutually vertically arranged in parallel and used for holding the fuel elements. The storage rack assembly (1) additionally comprises one or a plurality of base plates (20, 20<I-IV>), the corresponding storage racks which are mutually arranged in parallel are connected to a public base plate, and the base plates are capable of moving on a floor (24) of a storage pool.

Description

The rack assembly for storing of storing nuclear fuel elements
Technical field
The present invention relates to the rack assembly for storing of the storing nuclear fuel elements of the preamble according to the claims in the present invention 1.
Background technology
Nuclear fuel element, especially burnup nuclear fuel element is stored in storage pool, is wherein filled with as cooling mediums such as water, works the screen cover preventing fuel element radiation simultaneously.Burnup nuclear fuel element is stayed in storage pool, finally stores, depend on the circumstances until they are processed or deliver to it again.In order to safe storage nuclear fuel element, develop storage support, with the storage pool can accepting multiple storage support, storage support can be arranged one by one, in some cases, also can one arrange on another.
In US4042828, describe a kind of storage support, for storing nuclear fuel elements in storage pool.Storage support contains multiple vertical cover body, in a row aligns and forms the passage receiving fuel element.The cover body with tetragonal section to be arranged in open storage framework and to be open on top and bottom, makes the water be contained in storage pool can at cover body Inner eycle to cool fuel element.The fuel element inserting cover body is individually supported via the floor of storage pool.
Another storage support for storing nuclear fuel elements in storage pool is described in US4187433.This storage support comprises a upper grid framework and a Under The Grille support, with an opening on another, is wherein inserted with the vertical movable passageway receiving fuel element.Like this, the weight of memory channel and the weight of associated fuel element have and are individually supported on the floor of storage pool.
Being well known that, only partly can meeting the requirement of safe storage fuel element from the storage support described in prior art, especially when there is earthquake, having found that the storage support in storage pool has significant displacement.The storage support being filled with fuel element has 30 tons to 60 tons usually, the power resulted between earthquake period between adjacent storage support, between storage support and storage pool wall is sizable like this, its danger is that the wadding in the fuel element of storage support and interior storage thereof when earthquake and/or storage pool can be damaged, thus can discharge active nucleus.
Attached Figure 13 and 14 of US4042828 illustrates, the connector that can flow through with adjacent storage support.At least in principle, by connecting storage support, the collision between storage support can be prevented when earthquake.But the building method of above-mentioned storage support seems to be not suitable for absorb powerful horizontal force, makes only can limitedly increase by connector the security preventing earthquake.
In order to manage the problem of the storage support displacement caused by earthquake and store pool wall or other is arranged on the relevant risk of the collision of the miscellaneous equipment in this storage pool, attempt storage support to be supported on to store pool wall place and/or by their grapplings or be tightened onto on storage pool floor.Past based on this fixed storage support principle, has built multiple storage pool.But, find very soon this fixed storage support principle be have circumscribed.Seismic (seismal is larger, and storage density quality that is larger or storage support increases, and the king-sized peak load in local can occur in anchor station and/or bearing position, will inevitably cause the damage to these structures, especially cause the leakage of the lining material of storage pool.For this reason, to seek the solution being suitable for large seismic (seismal and large storage density.
So-called " being free to slide " principle provides the remarkable improvement to this problem, and it builds in the storage of newly-built fuel element in the past few years.In this principle, storage support is freely installed in storage pool and can freely slides when earthquake.By the friction produced when mobile, most of seismic energy can be eliminated.This principle allows to eliminate at the extra high peak load in the anchor station of storage support and/or the local of bearing position, but this principle also has following shortcoming:
A shortcoming is: earthquake-induced storage support displacement will have certain free zone around storage support.This equates loss storage space, is very expensive.
Another shortcoming is, these displacements cause the irregular gap forming different size between storage support, after the earthquake, may produce the irregular layout of storage support, can cause the subsequent treatment problem to the fuel element stored.
Another shortcoming is from such fact, and the storage support that local is loaded, especially the support of side loading, is stimulated to swing when large horizontal earthquake accelerates, and the leg of storage support can from storage pool ratio 10-20 millimeter according to appointment.This kind of swing of storage support causes and produces very large impulsive force to the floor of storage pool, and this impulsive force makes the disclosure risk of storage pool increase significantly.And the trend observed is that storage support displacement is cumulative along the direction of unloaded side, and this additionally reduces the stability of storage support.
Summary of the invention
The object of this invention is to provide the rack assembly for storing of storing nuclear fuel elements in storage pool, but it arranges according to " being free to slide " principle can avoid or at least can reduce above-mentioned shortcoming significantly.
Above-mentioned purpose is met by rack assembly for storing according to claim 1.
According to rack assembly for storing of the present invention, for storing nuclear fuel elements in storage pool, comprise at least two storage supports, it is each comprises multiple vertical channel, arranges side by side to receive fuel element.This rack assembly for storing additionally comprises one or more substrate, and the respective stored support be arranged in juxtaposition is connected at least one public substrate, and this substrate or described substrate can move on the floor of storage pool.Advantageously, described storage support is bearing on this substrate or described substrate.In an advantageous embodiment, described storage support and this substrate or described substrate can together with move on the floor of storage pool.
In further advantageous embodiment, described substrate arranged is at the periphery of storage support, and such as described substrate is substantially along the whole periphery of storage support.
In further advantageous embodiment, this substrate or described substrate extend or substantially extend on the whole floor area of rack assembly for storing at least 80% of the floor area of rack assembly for storing.
Independent of above-described embodiment, can advantageously select this substrate or described substrate larger than the floor area of storage support.
In advantageous embodiment, storage support regulates connector to be correspondingly connected to this substrate or described substrate via one or more height.In this case, if needed, described height regulates connector to have conical bearing element or spherical support elements, to correct the angle deviating between storage support and/or this substrate or described substrate.In storage pool floor any uneven all by highly regulate connector balance.
In further advantageous embodiment, storage support is correspondingly connected to this substrate or described substrate via Bolt Connector.Advantageously, screw thread and Bolt Connector are formed at this substrate or described substrate or threaded bolt and are arranged at this substrate or described substrate.
The advantage that rack assembly for storing according to the present invention has is, has stable connection, or can set up stable connection via this substrate or described substrate between storage support.Described substrate can slide mobile on the floor of storage pool, and the storage support that mode is according to this connected freely can move as a block, the rack assembly for storing namely when earthquake is accelerated.In this, advantageously, the horizontal component of vibration can not be delivered to rack assembly for storing from storage pool floor completely.This HFS for horizontal component is correct especially, due to large quality and the mobile layout thereof of rack assembly for storing, by damping consumingly.And the length variations of bringing out due to heat and the strain of the rack assembly for storing that can produce, because the removable layout of storage support is limited to harmless degree.Also advantageously, described substrate vibration vertical component in as hydraulic dampening element.In addition, the swing of storage support and the banking motion of storage support are all by effectively by this substrate or described substrate damping, and on the one hand, described substrate ensures that storage support connects each other, on the other hand the effect of its hydraulic dampening element.
Seismic analysis shows, the described substrate connecting adjacent storage support respectively has vertical vibration and the very strong damping of horizontal vibration, by the connection of adjacent storage support, can eliminate the permanent displacement of storage support after earthquake.And, due to the connection of adjacent storage support, the displacement of storage support device can be reduced widely, because with local load, especially these supports of side loading, link to the relatively qualitatively large of other storage support, this slow down moving process significantly.
The above-mentioned description to embodiment and modification thereof are as just example.And, favourable embodiment can be understood by dependent claims and accompanying drawing.And within the scope of the invention, the single feature of described or shown embodiment also can combine to produce new embodiment.
Accompanying drawing explanation
Referring to embodiment and accompanying drawing, describe the present invention in detail, wherein:
Accompanying drawing 1 illustrates the side view of the embodiment according to rack assembly for storing of the present invention;
Accompanying drawing 2A illustrates the embodiment according to the substrate distribution in rack assembly for storing of the present invention;
Accompanying drawing 2B illustrates the second embodiment that substrate distributes;
Accompanying drawing 2C illustrates the 3rd embodiment that substrate distributes;
Accompanying drawing 3A illustrates an embodiment, for the connection between a substrate of rack assembly for storing according to the present invention and two storage supports;
Accompanying drawing 3B illustrates the second embodiment of the connection between a substrate and two storage supports;
Accompanying drawing 4A, B illustrate two embodiments of storage support, for rack assembly for storing according to the present invention;
Accompanying drawing 5 illustrates the embodiment of the channel architecture of the storage support of 4B with reference to the accompanying drawings;
Accompanying drawing 5A, B illustrate sheet material parts, for reference to the accompanying drawings 5 the structure of channel architecture; And
Accompanying drawing 6 illustrates the embodiment of the base unit of the storage support of 4B with reference to the accompanying drawings.
Embodiment
Embodiment shown in accompanying drawing 1 is the rack assembly for storing at storage pool storing nuclear fuel elements, comprises at least two storage supports 1 i-IV, each comprises multiple passage be vertically arranged in juxtaposition for receiving fuel element respectively.In addition, described rack assembly for storing 1 comprises one or more substrate 20,20 i-IV, the respective stored support of layout alongside one another is connected at least one public substrate, and this substrate or described substrate can move on the floor 24 of storage pool.Advantageously, described storage support 1 i-IVbe bearing in this substrate or described substrate 20,20 i-IIIon.In favourable embodiment, described storage support 1 i-IVwith this substrate or described substrate can together with move on the floor 24 of storage pool.In certain instances, lining material 23 can be set on the floor 24 of the storage pool of described substrate and/or storage support movement.This lining material 23 plays the seal in sealed storage pond, such as can by steel making.
In the embodiment shown in Figure 1, rack assembly for storing 1 has four storage supports 1 be arranged in juxtaposition along a direction each other i-IV.But, also can layout alongside one another two, three or storage support more than four; And/or increase a row or multi-row in the direction vertical with this direction, to produce the rack assembly for storing of required size.
In an advantageous embodiment, storage support 1 i-IVconnector 15 is regulated correspondingly to be connected to this substrate or described substrate 20 via one or more height i-III.In this case, as required, described height regulates connector 15 can have conical bearing element or spherical support elements 17,18a-c, to correct the angular deflection between storage support and this substrate or described substrate.In storage pool floor any uneven can by highly regulate connector compensate.
In further advantageous embodiment, storage support 1 i-IVthis substrate or described substrate 20 is connected to via Bolt Connector such as screw bolt 16 i-III.Advantageously, screwed union and thread-shaped are formed in this substrate or described substrate or threaded bolt and can be arranged at this substrate or described substrate.
In an advantageous embodiment, storage support 1 i-IVbe respectively arranged with supporting member 10 " ', 10 ", 10 " ', be fixedly connected to storage support.In this case, as shown in Figure 1, via supporting member, storage support is connected to this substrate or described substrate.In further advantageous embodiment, supporting member 10a can additionally be arranged at storage support 1 i-IV, with at this substrate be bearing on storage pool floor or described substrate 20 i-IIIbetween storage support.As shown in Figure 1, the height of supporting member can regulate, and store any uneven of this floor to compensate, such as they comprise a screw thread.In the embodiment shown in fig. 1, storage support 1 iIIsupporting member be not also positioned on the floor of storage pool, also must be lowered by the threaded rod at such as rotation supporting part place.
Embodiment shown in accompanying drawing 2A is the distribution of the substrate for rack assembly for storing according to the present invention.In this embodiment, rack assembly for storing comprises four rows, and each row has three storage supports 1 respectively i-III.Naturally, the quantity of row and the quantity of often arranging storage support can at random select to be formed the rack assembly for storing of required size.Rack assembly for storing in the embodiment shown additionally comprises multiple substrate 20 i-IV, each storage support disposed adjacent one another is connected at least one public substrate, and this substrate or described substrate can move on the floor of storage pool.
In an advantageous embodiment, storage support 1 i-IIIall be provided with the supporting member 10 being fixedly connected to storage support.Storage support 15 is connected with this substrate or described substrate with supporting member via connector 15.In further advantageous embodiment, at storage support 1 i-IIIplace can arrange additional support members 10a to be bearing in the storage support between this substrate on storage pool floor or described substrate.
Usually the length of substrate can freely be selected, as long as two storage supports can be connected to substrate.In practice, advantageously can select the length of substrate, make be arranged in juxtaposition at least two of identical storage support supporting members can be supported on substrate and/or be connected to the supporting member of adjacent storage support via substrate.In further advantageous embodiment, described substrate arranged at the periphery of storage support, such as substantially described substrate along the whole periphery of storage support, as shown in Figure 2 A.
The second embodiment shown in accompanying drawing 2B is the distribution of the described substrate in rack assembly for storing according to the present invention.In an illustrated embodiment, rack assembly for storing comprises four rows, and each row has three storage supports 1 i-III.Naturally, in the quantity of row and a row, the quantity of storage support can at random select the rack assembly for storing forming required size.Rack assembly for storing in the embodiment shown additionally comprises multiple substrate 20 i-IV, the storage support of adjacent layout is connected at least one public substrate 20 iI, 20 iV, this substrate or described substrate can move on the floor of storage pool.At the periphery of rack assembly for storing, further moving substrate 20a, 20 i, 20 iII, 20 vto support storage support on the floor that can be arranged on storage pool.
In an advantageous embodiment, storage support 1 i-IIIprovide supporting member 10 respectively, be fixedly connected to storage support.In this case, via connector 15 and supporting member, storage support is connected to this substrate or described substrate.In further advantageous embodiment, at storage support 1 i-IIIplace can provide additional support members, to be bearing in the storage support between this substrate on storage pool floor or described substrate.
Usually the length of substrate can freely be selected, as long as two storage supports can be connected to substrate.In practice, advantageously can select the length of substrate, make be arranged in juxtaposition at least two of identical storage support supporting members can be supported on substrate and/or be connected to the supporting member of adjacent storage support via substrate.
The 3rd embodiment that accompanying drawing 2C illustrates is the distribution of the described substrate in rack assembly for storing according to the present invention.In an illustrated embodiment, rack assembly for storing comprises four rows, and each row has three storage supports 1 i-III.Naturally, in the quantity of row and a row, the quantity of storage support can at random select the rack assembly for storing forming required size.Rack assembly for storing in the embodiment shown additionally comprises multiple substrate 20 i-II, corresponding adjacent storage support is arranged as these and is connected at least one public substrate, this substrate or described substrate can move on the floor of storage pool.
In an advantageous embodiment, storage support 1 i-IIIeachly provide supporting member 10, be fixedly connected to storage support.In this case, via connector 15 and supporting member, storage support is connected to this substrate or described substrate.In further advantageous embodiment, supporting member is arranged in the periphery of storage support, as shown in Figure 2 C.If needed, additional support element 10a can also be provided, be spaced to support the storage support on this substrate or described substrate in the periphery that they are arranged in storage support.
Usually the size of substrate can freely be selected, as long as two respective stored supports can be connected to a substrate.In practice, advantageously can select the length of substrate, make be arranged in juxtaposition at least two of identical storage support supporting members can be supported on substrate and/or be connected to the supporting member of adjacent storage support via substrate.In an advantageous embodiment, this substrate or described substrate extend or substantially extend on the whole floor area of rack assembly for storing at least 80% of the floor area of rack assembly for storing, as shown in Figure 2 C.In further advantageous embodiment, this substrate or described substrate are larger than the floor area of storage support, as shown in Figure 2 C.
Embodiment shown in accompanying drawing 3A is the substrate 20 in rack assembly for storing according to the present invention and two storage supports 1 i, 1 iIbetween connection.In an advantageous embodiment, storage support 1 i, 1 iIbe respectively arranged with supporting member 10, be fixedly connected to storage support, such as, connected by spiral at support plate 7 place of respective stored support or be welded to connect.In this case, via supporting member, storage support is connected to this substrate.In advantageous embodiment, in each case, storage support is respectively via highly regulating connector 15 to be connected to substrate 20.The unevenness on storage pool floor can be balanced by highly regulating connector.The sense of displacement highly regulating connector is shown with double-head arrow 15a in accompanying drawing 3A.
Advantageously, highly regulate the first link 19 that connector 15 comprises band internal whorl and the second link 17 be mated, this second link 17, with external screw-thread, is screwed onto the first link and obtains required connection height so that link is rotated relative to each other.Such as, this link can be made as sleeve, and as shown in Figure 3A, in this case, inner sleeve 17 additionally can be provided with internal whorl to receive bolt 16,16 '.
If needed, highly adjustment connector comprises taper or spherical support elements 17,18a-c to balance the angular deviation between storage support and substrate.Advantageously, spherical or conical bearing element comprise band taper or ball recess the first supporting member 18a and with spherical or tapered protrusion, the second supporting member 18b that is mated that are arranged in supporting member 10 top side, and with the 3rd supporting member 18c of taper or hemisphere jut, with spherical or conical socket, the 4th supporting member 17 that is mated that are arranged on the downside of supporting member 10.Such as, supporting member can be formed as pad as shown in Figure 3A and/or is provided in support plate 7 place of supporting member and/or storage support and/or highly regulating the link place of connector 15.
In a further advantageous embodiment, storage support 1 i, 1 iIsubstrate 20 is connected to, such as, by screw or screw bolt 16,16 ', if needed, by nut 16a via bolt.In accompanying drawing 3A, illustrate that two for bolted possibility embodiment.In the embodiment shown in the left-hand side half of accompanying drawing 3A, screw bolt 16 is connected to substrate 20 via sleeve 19, and this sleeve is fixedly connected to substrate, and wherein in the embodiment shown in accompanying drawing 3A right-hand side half, bolt 16 ' is fixedly connected to substrate.Advantageously, screw thread and bolt are formed in connection in substrate or screw bolt 16 ' can be arranged on substrate, if needed, it is fixedly connected to substrate, as shown in the right-hand side half of Fig. 3 A.
Independent of substrate 20 and storage support 1 i, 1 iIbetween connect embodiment and modification, substrate can move on the floor of storage pool.In some cases, lining material 23 can be arranged on floor 24 place of storage pool, substrate and/or storage support can move on lining material.Lining material 23 plays storage pool seal, such as can by steel making.In advantageous embodiment, substrate 20 is provided with the additional slippage coating 22 as layers of chrome in downside.
The second embodiment shown in accompanying drawing 3B, for the substrate in rack assembly for storing according to the present invention and two storage supports 1 i, 1 iIbetween connector 15.This second embodiment is different from the embodiment of accompanying drawing 3A to be: type connector 15 being anchored to substrate.In a second embodiment, via substrate 20 place arrange enhancing rib or pillar 21 connector 15 is anchored to substrate.For connector 15 design details and may embodiment and modification, with reference to above-mentioned the first embodiment for connecting between substrate and at least two storage supports, introduce in the description of accompanying drawing 3A.
Such as, strengthen rib 21 and can be formed as the plate being installed on substrate 20, as shown in Figure 3 B.But, if also rib 21 may be strengthened on the downside of substrate place or need only to use thick substrate.
In an advantageous embodiment, storage support is each via highly regulating connector 15 to be connected to substrate 20.The sense of displacement highly regulating connector is shown by double-head arrow 15a in accompanying drawing 3B.Advantageously, in enhancing rib 21, provide tapped hole, the externally threaded parts 17 that are connected of band are screwed in this hole to be set required connection highly by rotating connecting part.Such as, link can be made as sleeve, if needed, is provided with internal thread to receive screw bolt 16, as shown in Figure 3 B.
In a further advantageous embodiment, storage support 1 i, 1 iIsubstrate 20 is connected to, such as, via screw or screw bolt 16, if needed via nut 16a via bolt.Advantageously, screw thread and screw bolt are formed in connection in and strengthen in rib, or screw bolt 16 is arranged at enhancing rib place, if needed, it can be fixedly connected to enhancing rib.Advantageously, the thickness that enhancing rib and/or substrate have is greater than screw bolt or bolted diameter used.
Accompanying drawing 4A illustrates the embodiment of storage support, for carrying out storing nuclear fuel elements in rack assembly for storing according to the present invention.Storage support 1 in illustrated embodiment icomprise channel architecture, it has multiple passage 9 be arranged in juxtaposition, and is connected to channel architecture with receiving wall 11, supporting member 7 of fuel element.And, such as, storage support 1 ican comprise pillar 4, it can be connected to the upper member of support plate 7 and channel architecture.In some cases, a grid and/or end plate can be provided in the connected upper member of pillar energy of channel architecture.
In an advantageous embodiment, fuel element can be supported on support plate 7.For this reason, support plate 7 can be provided opening and/or conduit, protrude wall 11 place that cam can be formed at this channel architecture and/or passage 9, described cam can be inserted into or pass opening and/or the conduit of support plate, can be anchored and/or fixedly overcome the pull-out on support plate side relative to channel architecture.The advantage that this embodiment has is, support plate can have relatively little material thickness, because support plate has enough rigidity to accept the weight of fuel element by the connection of channel architecture.
Such as, cam is given prominence to from away from the support plate 7 channel architecture side, as shown in Figure 4 A, can by interlocking member grappling, such as can with wedge type and/or straight or taper bolt and/or spline.
Advantageously, the wall 11 of channel architecture and/or passage is made up of neutron absorber material, such as boron alloy or boron-doping steel or the steel containing boron absorbing material.If needed, passage can be made as double-walled.
In a further advantageous embodiment, storage support 1 iadditionally comprise one or more supporting member 10 to support storage support and/or support plate.Such as, supporting member can align or centering with the cam of channel architecture.Depend on the circumstances, supporting member is shaped by metal sheet or sheet metal parts, and wherein the transverse metal sheet material of supporting member or sheet metal parts are advantageously arranged in supporting member away from the side of channel architecture, directly below the wall of passage 9.Advantageously, supporting member 10 can be fixed on the selectivity position of support plate by such as screw and/or bolt.
Accompanying drawing 4B illustrates the second embodiment of storage support, carrys out storing nuclear fuel elements for rack assembly for storing according to the present invention.In the embodiment shown, storage support 1 icomprise channel architecture, this channel architecture comprises multiple passage 9 be arranged in juxtaposition, and with receiving the wall of fuel element and being connected to the support plate 7 of channel architecture.
In an advantageous embodiment, storage support 1 icomprise a base unit 2 and be one or morely arranged to a grid cell 3.1-3.4 on another, to be supported by base unit and by sheet metal parts 11 i, 11 iImake, form the wall of passage 9, such as, can arrange in a clockwise direction.Base unit 2 comprises support plate 7 and is connected to the grid 6 of support plate.An advantageous embodiment of base unit is shown at accompanying drawing 6, and paragraph is below described.Further, such as, storage support 1 can comprise pillar 4, can be connected to base unit 2 and top grill unit, depends on the circumstances and also can be connected to further grill unit.
Advantageously, grid 6 and base unit 2 and/or grill unit 3.1-3.4 are made up of neutron absorber material, such as boron alloy or boron-doping steel or the steel containing boron absorbing material.If needed, the grid of base unit and/or grill unit can be made as double-walled.
In a further advantageous embodiment, storage support 1 additionally comprises one or more supporting member 10 to support storage support and/or support plate.Such as, supporting member can align or centering with the cam of channel architecture.In some cases, supporting member 10 is made up of sheet metal or sheet metal parts, and wherein the transverse metal sheet material of supporting member or sheet metal parts are advantageously arranged in supporting member away from the side of channel architecture, directly below the wall 11 of passage 9.Advantageously, supporting member 10 can be fixed on the selectivity position of support plate by such as screw and/or bolt.
Accompanying drawing 5 illustrates the embodiment of channel architecture, for the storage support of 4B with reference to the accompanying drawings.Shown channel architecture comprises multiple grill unit, provides vertical channel 9 to receive fuel element.The wall of passage is by sheet metal parts intersected with each other or sheet metal band 11 i, 11 iIformed, one is arranged in stacked inherently stable grill unit 3 in another Shangdi, and they form installation unit respectively.Such as, sheet metal parts can be manufactured by neutron absorber material or wall energy contains neutron acoustic absorbant.In an advantageous embodiment, grill unit 3 provides respectively at sheet metal parts 11 i, 11 iIthe multiple special-shaped otch 13 of upper and lower edge, also have multiple outstanding linkage element 14 relevant to the otch of adjacent grid unit, this linkage element is formed as when grill unit one is placed on another, and the otch of linkage element and adjacent grid unit engages in the mode of fit shapes each other at least partly.
This building method allows storage support to be machined, and makes the height of storage support be suitable for the length of fuel element in a straightforward manner.
With reference to the accompanying drawings 5,5A, 5B describe the embodiment of single grill unit in detail.Grill unit 3 in this embodiment comprises two groups of parallel sheet metal parts or sheet metal bands 11 respectively i, 11 iI, wherein the sheet metal parts of first group intersects with second group of sheet metal parts.Accompanying drawing 5A and 5B illustrates sheet metal parts 11 respectively i, 11 iIexemplary embodiment.Such as, first group of sheet metal parts 11 ilower limb provide cutting mouth 12a, second group of sheet metal parts 11 iIcoboundary can provide cutting mouth 12b, make when connecting cutting mouth 12a, 12b, connect between the intersection sheet metal parts of first group, second group, by this connection, sheet metal parts is kept in place each other and is combined into antitorque grill unit.
Accompanying drawing 6 illustrates the embodiment of base unit, for the storage support of 4B with reference to the accompanying drawings.Shown in base unit comprise a support plate 7 and one by sheet metal parts 5 i, 5 iIand/or the grid 6 that grating element is formed.In an advantageous embodiment, base unit 2 comprises two groups of parallel sheet metal parts or sheet metal bands 5 respectively i, 5 iI, wherein the sheet metal parts of first group intersects with second group of sheet metal parts.Such as, first group of sheet metal parts 5 ilower limb provide cutting mouth, second group of sheet metal parts 5 iIcoboundary can provide cutting mouth, make connect cutting mouth time, connect between the intersection sheet metal parts of first group, second group, by this connection, sheet metal parts is kept in place each other and is combined into antitorque grill unit.
In an advantageous embodiment, fuel element can be supported on support plate 7.Such as, the single sheet metal parts 5 of grid i, 5 iIcam can be provided, in each case all with on the side faced by support plate, thus support plate has opening as the tank circuit providing the position of cam to grid, described cam can be imported into or insert or by described opening, can also be anchored and/or fix to prevent from being drawn out on the side that support plate is relative with grid under assembled state.The advantage of this embodiment is, support plate can have relatively little material thickness, because have enough rigidity to accept the weight of fuel element by being connected to grill bearing plate.
Usually, support plate is the thickness of the thickness of 4-20 millimeter or the thickness of 4-16 millimeter or 6-16 millimeter, makes it possible to carry out machine work by laser to it.Such as, cam can be given prominence to from the side of support plate away from channel architecture, as shown in Figure 6, and by interlock such as wedge shape and/or straight and/or taper bolt and/or spline grappling.
In further advantageous embodiment, base unit 2 additionally comprises one or more supporting member 10 to support storage support, as shown in Figure 6.Such as, supporting member can with the sheet metal parts 5 of base unit i, 5 iIor the grating element alignment of base unit or centering.Depend on the circumstances, supporting member 10 is made up of sheet metal or sheet metal parts, wherein the transverse metal sheet material of supporting member or sheet metal parts are advantageously arranged on the side of the relative grid of supporting member, directly at grating element or the sheet metal parts 5 of grid i, 5 iIbelow.Advantageously, supporting member 10 can be fixed on the selectivity position of support plate 7 by such as screw and/or bolt.
Be, due to this substrate or described substrate, have between storage support and maybe can set up stable connection according to rack assembly for storing of the present invention with for the advantage that the substrate of this rack assembly for storing has.Further, due to the connection by this substrate or described substrate, the earthquake safety of the rack assembly for storing of the storing nuclear fuel elements of the prior art relative to initial description can be improved.Can the horizontal component of damped vibration and vertical component effectively.

Claims (10)

1. a rack assembly for storing, for storing nuclear fuel elements in storage pool, wherein said rack assembly for storing (1) comprises at least two storage supports (1 i-IV), storage support comprises channel architecture, and it has multiple passage be vertically arranged in juxtaposition for receiving fuel element, and support plate (7) is connected to channel architecture, it is characterized in that:
Described rack assembly for storing (1) additionally comprises one or more substrate (20,20 i-IV), via connect respectively layout alongside one another adjacent storage support described substrate at least one public substrate and achieve connection stable between storage support, described substrate (20,20 i-IV) can be upper mobile in the floor of storage pool (24), achieve the removable layout of storage support and rack assembly for storing;
The cam being formed at the wall place of channel architecture and/or passage is from and grappling outstanding away from the support plate (7) channel architecture side and/or the pull-out that fixedly overcomes on support plate side relative to channel architecture, and the connection of channel architecture has enough rigidity to accept the weight of fuel element thus support plate can have relatively little material thickness.
2. rack assembly for storing as claimed in claim 1, wherein said storage support (1 i-IV) be bearing in described substrate (20,20 i-IV) on.
3. rack assembly for storing as claimed in claim 1 or 2, wherein said storage support (1 i-IV) and described substrate (20,20 i-IV) can be upper mobile on the floor (24) of storage pool together.
4. rack assembly for storing as claimed in claim 1, wherein said substrate (20,20 i-IV) be arranged in storage support (1 i-IV) periphery or described substrate (20,20 i-IV) substantially along the whole periphery of storage support.
5. rack assembly for storing as claimed in claim 1, wherein said substrate (20,20 i-IV) extend at least 80% of the floor area of rack assembly for storing (1) or substantially extend on the whole floor area of rack assembly for storing (1).
6. rack assembly for storing as claimed in claim 1, wherein said substrate (20,20 i-IV) than storage support (1 i-IV) floor area want large.
7. rack assembly for storing, wherein storage support (1 as claimed in claim 1 i-IV) regulate connector (15) to be correspondingly connected to described substrate (20,20 via one or more height i-IV).
8. rack assembly for storing as claimed in claim 7, wherein said height regulates connector (15) to comprise conical bearing element or spherical support elements (17,18a-c).
9. rack assembly for storing, wherein storage support (1 as claimed in claim 1 i-IV) be correspondingly connected to described substrate (20,20 via Bolt Connector i-IV).
10. rack assembly for storing as claimed in claim 1, wherein screw thread and Bolt Connector are arranged at described substrate (20,20 i-IV) or threaded bolt (16,16 ') be arranged at described substrate (20,20 i-IV).
CN200910150485.1A 2008-06-26 2009-06-25 Storage rack assembly for storing nuclear fuel elements Active CN101615435B (en)

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EP08159132.3 2008-06-26
EP08159132 2008-06-26
EP08159766.8 2008-07-04
EP08159766 2008-07-04

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CN108708891B (en) * 2018-05-22 2020-05-22 广东核电合营有限公司 Lattice frame connecting device for expansion of spent fuel pool and connecting method thereof

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