CN102750991B - The down pipe base for nucleus fuel component of a kind of band filter plate and filter plate complete processing thereof - Google Patents
The down pipe base for nucleus fuel component of a kind of band filter plate and filter plate complete processing thereof Download PDFInfo
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- CN102750991B CN102750991B CN201210250547.8A CN201210250547A CN102750991B CN 102750991 B CN102750991 B CN 102750991B CN 201210250547 A CN201210250547 A CN 201210250547A CN 102750991 B CN102750991 B CN 102750991B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The present invention discloses the down pipe base for nucleus fuel component of a kind of band filter plate, and the supporting leg (5) primarily of the web plate (4) being square and web plate (4) bottom is formed; Running through the connection hole (3) being provided with for installing fuel assembly guide pipe on described web plate (4) and be arranged on the trilateral discharge orifice (2) connecting hole (3) surrounding, this web plate (4) all the other positions are evenly provided with square discharge orifice (1). The invention also discloses the complete processing of a kind of filter plate for above-mentioned down pipe base for nucleus fuel component. The refrigerant circulation share height of the present invention, and flow distribution is even.
Description
Technical field
The present invention relates to the down pipe base for nucleus fuel component of a kind of band filter plate and filter plate complete processing thereof.
Background technology
Nuclear fuel assembly is made up of some fuel sticks, guide pipe parts and location grid and upper bottom nozzle. As shown in Figure 1, its shortcoming existed is existing down pipe base for nucleus fuel component: circulation area fraction is lower, and bottom nozzle pressure drop is relatively big, consumes main pump lift many, and economy is not good enough; By the impact of base supporting leg, corner place flow is on the low side, and flow distribution owes evenly easily to produce horizontal stream when refrigerant is by distributing after bottom nozzle again, increases the risk that fuel rod vibration abrasion was lost efficacy.
Summary of the invention
It is an object of the invention to overcome the shortcoming and defect of above-mentioned prior art, it is provided that a kind of refrigerant circulation share height, and the down pipe base for nucleus fuel component of the uniform band filter plate of flow distribution.
The invention also discloses the complete processing of a kind of filter plate for above-mentioned down pipe base for nucleus fuel component.
The object of the present invention is achieved through the following technical solutions: the down pipe base for nucleus fuel component of a kind of band filter plate, and the supporting leg primarily of the web plate being square and web plate bottom is formed; Running through the connection hole being provided with for installing fuel assembly guide pipe on described web plate and be arranged on the trilateral discharge orifice connecting hole surrounding, all the other positions of this web plate are evenly provided with square discharge orifice.
Described trilateral discharge orifice is that indent forms cambered surface near the side connecting hole, the radian of this cambered surface mates mutually with the radian in adjacent connection hole, namely both cambered surfaces are substantially identical, thus on the basis ensureing structural strength, make trilateral discharge orifice can reach minimum with the web plate area being connected between hole, thus add cooling fluid circulation area fraction, reduce base pressure drop, it is to increase the economy of fuel assembly.
The trilateral discharge orifice of the present invention is preferably right-angle triangle, and its hypotenuse is near adjacent connection hole, so that its square edge is near adjacent square discharge orifice, obviously, on the basis ensureing structural strength, web plate area between the trilateral discharge orifice of this kind of arrangement mode and adjacent square discharge orifice reaches minimum, increases cooling fluid circulation area fraction further and reduces pressure drop.
Further, the number of the trilateral discharge orifice that each of the present invention connects hole surrounding is 4, and be symmetrical set around this connection hole, in order to the web plate area reduced as much as possible between two adjacent triangle discharge orifices, namely increase cooling fluid circulation area fraction and reduce pressure drop, above-mentioned 4 trilateral discharge orifices should on the basis ensureing structural strength, and what make that adjacent two trilateral discharge orifice leans on is more near more good as far as possible.
Groove is offered at four angles of described web plate lower surface respectively, has not only reduced the thickness of local web plate, reduce its material cost; And be conducive to increasing the refrigerant flow at corner place, owing to usual web plate corner place is flow region on the low side, by offering groove at its corner place, thus improve the flow at corner place, namely improve the overall uniformity of flow of bottom nozzle, avoid refrigerant by producing laterally stream during bottom nozzle, it is to increase the overall uniformity of flow of bottom nozzle, reduce the risk that fuel rod vibration abrasion was lost efficacy.
In the present invention, the interior side of described supporting leg is also offered for guiding refrigerant to flow through the inclined-plane of base lower cavity, thus reduce pressure drop further, it is to increase the economy of fuel assembly.
Also being provided with filtration on described web plate, play the effect of anti-foreign matter, filtration can select the filter plate or filter screen etc. with filtering function.
Described filtration is filter plate, and this filter plate is primarily of filter plate body and runs through the filter opening being arranged on filter plate body and filter plate connection hole formation, and described filter plate body is made up of one block of whole plate or at least two pieces of thin plate superpositions, when being made up of one block of whole plate, the upper and lower surface of this whole plate has all offered some long strip shape grooves, described filter opening is that space crossed structure is formed by the long strip shape groove that two are separately positioned on whole plate upper and lower surface, in order to make two long strip shape grooves in space crossed structure can form filter opening, the degree of depth sum of described two long strip shape grooves in space crossed structure is equal to or greater than the thickness of whole plate, namely the bottom land of satisfied two long strip shape grooves is needed to have the part intersected and communicate, the hole that the part that this intersection communicates is formed is filter opening, in order to reduce difficulty of processing, preferably the height sum of two long strip shape grooves equals the thickness of whole plate, namely the bottom land of two long strip shape grooves just intersects and communicates, when being made up of at least two pieces of thin plate superpositions, every block thin plate has all been offered some long strip shape holes, described filter opening is that space crossed structure is formed by the long strip shape hole that at least two are separately positioned on different thin plate, it is long strip shape hole due to what offer on thin plate, since being hole, the upper and lower surface of thin plate must be run through, two pieces of thin plates are overlapped together, its crossover location must communicate and form hole, this hole is filter opening, and the filter plate total thickness of the quantity of thin plate needed for reality and the thickness of monolithic thin plate chosen determine.
The shape in above-mentioned long strip shape groove and long strip shape hole is preferably rectangle, waviness or zig-zag, but is not limited to this, it is possible to select separately according to practical situation.
The two schemes of above-mentioned filter plate is based on a design in fact, namely forms filter opening by space crossed structure, thus reduces the difficulty of processing of filter plate, reduces tooling cost; The difference is that, when the thickness of required filter plate is excessive time, adopting upper and lower surface fluting, traditional grooving processes can not make the cross part of space crossed two grooves up and down divide the formation hole that communicates, and the degree of depth of namely slotting still does not reach; In this time, take the 2nd kind of preferred version, form filter plate by polylith thin plate superposition, thus meet the thickness demand of filter plate, and cross part can be made to divide formation filter opening.
Further, in order to the circulation area of the structural strength and cooling fluid that ensure filter plate, described filter plate body is divided into some cooling fluid circulating areas, filter opening in each cooling fluid circulating area forms a Kong Qun, between adjacent holes group by wide intercostal every, filter plate connects the position, boundary that hole is arranged on wide rib, between adjacent filter opening by narrow intercostal every.
Here wide rib refers on filter plate body the part between adjacent holes group, is used for maintaining structural strength due to it, so design is wider, therefore called after width rib; Narrow rib refers on filter plate body the part between adjacent filter opening, owing to design should increase the circulation area of cooling fluid as far as possible, so design is narrower, therefore the narrow rib of called after, wide rib hereinafter is identical with this with the definition of narrow rib.
Rib between filter opening in each Kong Qun is designed to narrow rib by the present invention, thus increases the circulation area of cooling fluid, and by the rib between each Kong Qun is designed to wide rib, wider by the rib design between Kong Qun, maintains structural strength by it.
The big young pathbreaker of width of above-mentioned wide rib directly has influence on refrigerant by pressure drop and structural strength, the width of wide rib is more big, its structural strength is more big, but the corresponding reduction of circulation area of cooling fluid, namely cooling fluid is raised by pressure drop, on the contrary, the width of wide rib is more little, the corresponding reduction of its structural strength, but the then corresponding increase of the circulation area of cooling fluid, namely cooling fluid is reduced by pressure drop, in the present invention, it is enough that wide rib is mainly used in maintaining structural strength, therefore should preferentially meet structural strength in the design, and then considers the circulation area of cooling fluid; When the width of wide muscle is crossed hour, the structural strength of filter plate is difficult to meet service requirements, width is excessive, can lower the circulation share of filter plate, increase its pressure drop, consider, in order to obtain lower refrigerant by pressure drop and suitable structural strength, described in the present invention, the width decision design of wide rib is 0.8mm ~ 10mm.
The width size of above-mentioned narrow rib is identical with wide rib with the impact of structural strength by pressure drop on refrigerant, but its setting should pay the utmost attention to the circulation area increasing cooling fluid, when the width of narrow rib is crossed hour, the structural strength of filter plate is difficult to meet service requirements, width is excessive, can lower the circulation share of filter plate, increase its pressure drop, consider, in order to obtain lower refrigerant by pressure drop and suitable structural strength, described in the present invention, the width decision design of wide rib is 0.2mm ~ 1.2mm.
Owing to guide pipe and instrument pipe may be generally through the component for nuclear fuel assembly of filter plate, therefore filter plate connection hole includes but not limited to that guide pipe connects hole and instrument pipe connects hole, guide pipe connects hole for installing guide pipe, instrument pipe connects hole for installing instrument pipe, generally, it is multiple that guide pipe connects the number in hole, and the number that instrument pipe connects hole is one; For the ease of being arranged on down pipe base for nucleus fuel component by whole filter plate, described filter plate body can also be set up the corresponding steady pin hole in two positions.
Described Kong Qun carries out arranged according to the open-cellular form of down pipe base for nucleus fuel component, the position of wide rib is corresponding with the position of down pipe base for nucleus fuel component rib, namely the position of opening of Kong Qunyu bottom nozzle is corresponding, to reduce the impact mutually blocking the area that cooling fluid circulated, reduce cooling fluid and pass through pressure drop.
The complete processing of the filter plate of above-mentioned down pipe base for nucleus fuel component, it is characterised in that:
When filter plate is made up of one block of whole plate, comprise the following steps:
A () chooses one block of whole plate as filter plate body, and be processed into the size with down pipe base for nucleus fuel component and mate mutually;
B () is according to the position of opening of down pipe base for nucleus fuel component, it is determined that the filter opening that need to offer and filter plate connect the position in hole;
C () offers position according to what filter opening and filter plate connected hole, it is determined that the position of whole plate upper and lower surface fluting and size, then carry out groove milling to whole plate upper and lower surface, and the groove of upper and lower surface be space crossed structure formation filter opening;
D () processes filter plate in wide position, rib boundary and connects hole, whole filter plate machines;
When filter plate is made up of at least two pieces of thin plate superpositions, comprise the following steps:
A () chooses at least two pieces of thin plates, and be processed into the size with down pipe base for nucleus fuel component and mate mutually;
B () is according to the position of opening of down pipe base for nucleus fuel component, it is determined that the filter opening that need to offer and filter plate connect the position in hole;
C () offers position according to what filter opening and filter plate connected hole, it is determined that position of opening on every block thin plate and size, then to thin plate punching perforate; After perforate completes, all thin plate superpositions being formed filter plate body, the hole on thin plate is that space crossed structure forms filter opening;
D () processes filter plate in wide position, rib boundary and connects hole, whole filter plate machines.
Above-mentioned filter plate connects hole and still adopts traditional processing mode processing, such as boring or the milling of pre-brill etc.
In sum, the advantage of the present invention is as follows:
(1) the present invention is by changing the shape of discharge orifice and arrangement mode, it is possible to increases circulation area fraction and reduces pressure drop, it is to increase the economy of fuel assembly;
(2) the present invention is by changing the shape of supporting leg, it is possible to guides refrigerant to flow through base lower cavity, reduces pressure drop further, it is to increase the economy of fuel assembly;
(3) the present invention is by having groove in local, corner place, web plate bottom, increases the refrigerant flow at corner place, it is to increase the overall uniformity of flow of bottom nozzle, reduces the risk that fuel rod vibration abrasion was lost efficacy;
(4) the present invention by arranging filtration on web plate, thus plays the effect of anti-foreign matter;
(5) filter plate for fuel assembly bottom nozzle that the present invention relates to forms filter opening by space crossed structure, filter opening is combined to form Kong Qun, and hole group arranges and obtains filter effect well, refrigerant circulation area fraction height, structural strength is enough, and the installation being convenient to filter plate is fixed; This filter plate manufacture easily realizes, and thin plate intersection superposition in multilayer long strip shape hole is formed to the filter plate of filter opening, and its thin plate completes by punching, thicker whole plate pros and cons is intersected to slot and forms the filter plate of filter opening, can being realized by two-sided groove milling, its difficulty of processing is low, and tooling cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing down pipe base for nucleus fuel component;
Fig. 2 is the overall vertical view of the present invention;
Fig. 3 be in Fig. 2 A-A to sectional view;
Fig. 4 is the overall upward view of the present invention;
Fig. 5 is the structural representation of filter plate;
Fig. 6 is that the A-A of Fig. 5 is to schematic diagram;
Fig. 7 is the B position partial enlargement figure of Fig. 6;
Fig. 8 is long strip shape slot space decussate texture schematic diagram;
Fig. 9 is long strip shape groove is schematic shapes during rectangle;
Figure 10 is long strip shape groove is schematic shapes during waviness;
Figure 11 is long strip shape groove is schematic shapes during zig-zag;
Figure 12 is thin-slab construction schematic diagram;
Figure 13 is the filter-plate structure schematic diagram that thin plate superposition is formed.
In accompanying drawing, name corresponding to Reference numeral is called: 1 square discharge orifice; 2 trilateral discharge orifices; 3 connection holes; 4 web plates; 5 supporting legs; 6 grooves; 7 inclined-planes; 8 filter plate bodies; 9 filter openings; 10 filter plates connect hole; 11 hole groups; 12 wide ribs; 13 narrow ribs; 14 steady pin holes; 15 long strip shape grooves; 16 long strip shape holes.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1:
As shown in Figure 2,3, 4, the present invention comprises 4 supporting legs 5 of the web plate 4 being square and web plate 4 bottom, thus overall in stool shape structure, runs through and be provided with connection hole 3 and discharge orifice on web plate 4, connecting hole 3 for installing fuel assembly guide pipe, discharge orifice is used for logical cooling fluid, in order to increase circulation area fraction and reduce pressure drop, improve the economy of fuel assembly, the design of discharge orifice should on the basis ensureing structural strength, its distribution area on web plate 4 is the bigger the better, in order to reach this object, discharge orifice in the present invention adopts trilateral discharge orifice 2 and square discharge orifice 1, wherein: trilateral discharge orifice 2 is distributed in the surrounding connecting hole 3, and be a circle around the arrangement of connection hole 3, except arranging the position connecting hole 3 and trilateral discharge orifice 2 on web plate 4, other vacant parts evenly arrange square discharge orifice 1, above-mentioned trilateral discharge orifice 2 and square discharge orifice are when design, should carry out under the prerequisite ensureing structural strength.
As can be seen from said structure, by changing shape and the arrangement mode of discharge orifice, the area that the total area of the discharge orifice arranged on the web plate 4 of its unit surface is far longer than on the existing bottom nozzle shown in Fig. 1, thus obviously increase circulation area fraction and reduce pressure drop, it is to increase the economy of fuel assembly.
Said structure is a total design, namely on the basis ensureing structural strength, reduces the area of web plate 4 as far as possible and increases the area of discharge orifice on web plate 4; On this design basis, can optimize further, that is: described trilateral discharge orifice 2 is that indent forms cambered surface near the side connecting hole 3, the radian of this cambered surface mates mutually with the radian in adjacent connection hole 3, thus avoid trilateral discharge orifice 2 straight flange and be connected the situation that there is very wide arc gap between circular arc limit, hole 3, increase circulation area fraction further and reduce pressure drop, it is to increase the economy of fuel assembly.
The invention allows for further prioritization scheme, it is designed to right-angle triangle by trilateral discharge orifice 2, and its hypotenuse is near adjacent connection hole 3, obviously, on the basis ensureing structural strength, web plate 4 area between the trilateral discharge orifice 2 of this kind of arrangement mode and adjacent square discharge orifice 1 reaches minimum, increases cooling fluid circulation area fraction further and reduces pressure drop.
Embodiment 2:
As shown in Figure 2,3, 4, the present embodiment difference from Example 1 is only: offered groove 6 respectively on four angles of described web plate 4 lower surface, not only reduces the thickness of local web plate 4, reduces its material cost; And be conducive to increasing the refrigerant flow at corner place, this is owing to usual web plate 4 four jiaos of places are flow region on the low side, by offering groove at its corner place, thus improve the flow at corner place, namely improve the overall uniformity of flow of bottom nozzle, avoid refrigerant by producing laterally stream during bottom nozzle, it is to increase the overall uniformity of flow of bottom nozzle, reduce the risk that fuel rod vibration abrasion was lost efficacy. The present embodiment other parts are identical with embodiment 1, do not repeat them here.
Embodiment 3:
As shown in Figure 2,3, 4, the present embodiment difference from Example 1 is, the interior side of described supporting leg 5 is also offered for guiding refrigerant to flow through the inclined-plane 7 of base lower cavity, this inclined-plane 7 forms cooling fluid Drainage Section, thus reduce pressure drop further, improving the economy of fuel assembly, the offering direction and should meet the direction that cooling fluid guides in the middle part of web plate 4 of this inclined-plane 7, namely the upper end on inclined-plane 7 should be positioned at the inner side of its lower end. The present embodiment other parts are identical with embodiment 1, do not repeat them here.
Embodiment 4:
The present embodiment difference from Example 1 is, is provided with filter plate, thus plays the effect of anti-foreign matter on described web plate 4.
As shown in Figure 5, this filter plate is primarily of filter plate body 8 and runs through the filter opening 9 being arranged on filter plate body 8 and filter plate and connects hole 10 and form, and described filter plate body 8 is made up of one block of whole plate or at least two pieces of thin plate superpositions.
When being made up of one block of whole plate, as shown in Fig. 5,6 and 7, on described whole plate, also position of opening correspondence according to fuel assembly bottom nozzle has been offered filter plate and has been connected hole 10 and steady pin hole 14; The upper and lower surface of this whole plate has all offered some long strip shape grooves 15, and the shape of long strip shape groove 15 can be rectangle as shown in Figure 9, it is possible to is waviness as shown in Figure 10, or is zig-zag as shown in figure 11; As shown in Figure 8, the long strip shape groove 15 being separately positioned on whole plate upper and lower surface is in space crossed structure, thus forms filter opening 9.
In order to the circulation area of the structural strength and cooling fluid that ensure whole filter plate, as shown in Figure 1, filter plate body 8 is divided into some cooling fluid circulating areas by the present invention, filter opening 9 in each cooling fluid circulating area forms a hole group 11, by wide rib 12 interval between adjacent holes group 11, filter plate connects the position, boundary that hole 10 is arranged on wide rib 12, by narrow rib 13 interval between adjacent filter opening 9; The width of described wide rib 12 is preferably 0.8mm ~ 10mm, and the width of narrow rib 13 is 0.2mm ~ 1.2mm.
The course of processing of filter plate when being made up of one block of whole plate is: (a) chooses one block of whole plate as filter plate body 8, and is processed into the size with down pipe base for nucleus fuel component and mates mutually; B () is according to the position of opening of down pipe base for nucleus fuel component, it is determined that the filter opening 9 that need to offer and filter plate connect the position in hole 10; C () offers position according to what filter opening 9 and filter plate connected hole 10, it is determined that the position of whole plate upper and lower surface fluting and size, then carry out groove milling and form long strip shape groove 15 whole plate upper and lower surface, and the long strip shape groove 15 of upper and lower surface forms filter opening 9 in space crossed structure; D () processes filter plate connect hole 10 in wide rib 12 position that has a common boundary, filter plate connects hole 10 and adopts the processing of traditional processing mode, and such as boring or pre-bore milling etc., whole filter plate machines.
When being made up of at least two pieces of thin plate superpositions, it is with difference when being made up of one block of whole plate, the thin plate superposition of filter plate body 8 at least two pieces shown in Figure 12 is formed, every block thin plate has all been offered some long strip shape holes 16, described filter opening 9 is formed in space crossed structure by the long strip shape hole 16 that at least two are separately positioned on different thin plate, in order to better form filter opening 9, the present embodiment carries out superposition after 90-degree rotation between adjacent two pieces of thin plates, and the minimizing of cooling fluid circulation share is caused for preventing two pieces of thin plates from directly fitting, it can be made directly not fit by filter plate connection position, hole 10 increase pad between two pieces of thin plates.
Thin plate can adopt the good material of structural strength, the foreign matter in refrigerant can be tentatively filtered in the long strip shape hole 16 that its punching is formed, play the effect of first time filtration, the long strip shape foreign matter possibility orientation of minute quantity is consistent with thin plate perforate and passes through first piece of thin plate, but it is subject to the stop of the 2nd piece of thin plate after entering and fuel assembly can not be entered, the equivalent filter opening of combination filter plate is equivalent to the aperture that two boards intersects to form, and when ensureing circulation share, filter effect can significantly improve.
Above-mentioned long strip shape hole is identical with the shape of long strip shape groove, it is possible to be rectangle, waviness or zig-zag; Thin plate forms the filter plate shown in Figure 13 by superposition, and in order to the circulation area of the structural strength and cooling fluid that ensure whole filter plate, the arrangement of its filter opening 9 is identical with when being made up of one block of whole plate, does not repeat them here.
The course of processing of filter plate when being made up of at least two pieces of thin plate superpositions is: (a) chooses at least two pieces of thin plates, and is processed into the size with down pipe base for nucleus fuel component and mates mutually; B () is according to the position of opening of down pipe base for nucleus fuel component, it is determined that the filter opening 9 that need to offer and filter plate connect the position in hole 10; C () offers position according to what filter opening 9 and filter plate connected hole 10, it is determined that position of opening on every block thin plate and size, then form long strip shape hole 16 to thin plate punching perforate; After perforate completes, all thin plate superpositions being formed filter plate body 8, the long strip shape hole 16 on thin plate forms filter opening 9 in space crossed structure; D () processes filter plate connect hole 10 in wide rib 12 position that has a common boundary, filter plate connects hole 10 and adopts the processing of traditional processing mode, and whole filter plate machines.
As mentioned above, it is necessary, the present invention just can be realized preferably.
Claims (8)
1. the down pipe base for nucleus fuel component of a band filter plate, it is characterised in that: the supporting leg (5) primarily of the web plate (4) being square and web plate (4) bottom is formed; Running through the connection hole (3) being provided with for installing fuel assembly guide pipe on described web plate (4) and be arranged on the trilateral discharge orifice (2) connecting hole (3) surrounding, this web plate (4) all the other positions are evenly provided with square discharge orifice (1);
Described web plate is also provided with filtration on (4);
Described filtration is filter plate, this filter plate is primarily of filter plate body (8) and runs through the filter opening (9) being arranged on filter plate body (8) and filter plate connection hole (10) formation, described filter plate body (8) is made up of one block of whole plate, the upper and lower surface of this whole plate has all offered some long strip shape grooves, and described filter opening (9) is that space crossed structure is formed by the long strip shape groove that two are separately positioned on whole plate upper and lower surface.
2. the down pipe base for nucleus fuel component of a kind of band filter plate according to claim 1, it is characterized in that: described trilateral discharge orifice (2) is that indent forms cambered surface near the side connecting hole (3), and the radian of this cambered surface mates mutually with the radian of adjacent connection hole (3).
3. the down pipe base for nucleus fuel component of a kind of band filter plate according to claim 1, it is characterised in that: described trilateral discharge orifice (2) is right-angle triangle, and its hypotenuse is near adjacent connection hole (3).
4. the down pipe base for nucleus fuel component of a kind of band filter plate according to claim 3, it is characterised in that: the number of each trilateral discharge orifice (2) connecting hole (3) surrounding described is 4, and is symmetrical set around this connection hole (3).
5. the down pipe base for nucleus fuel component of a kind of band filter plate according to any one of Claims 1 to 4, it is characterised in that: groove (6) has been offered at four angles of described web plate (4) lower surface respectively.
6. the down pipe base for nucleus fuel component of a kind of band filter plate according to any one of Claims 1 to 4, it is characterised in that: the interior side of described supporting leg (5) is offered for guiding refrigerant to flow through the inclined-plane (7) of base lower cavity.
7. the down pipe base for nucleus fuel component of a kind of band filter plate according to claim 1, it is characterized in that: described filter plate body (8) is divided into some cooling fluid circulating areas, filter opening (9) composition Kong Qun (11) in each cooling fluid circulating area, by wide rib (12) interval between adjacent holes group (11), filter plate connects the position, boundary that hole (10) is arranged on wide rib (12), by narrow rib (13) interval between adjacent filter opening (9).
8. the complete processing of the filter plate of a down pipe base for nucleus fuel component as claimed in claim 7, it is characterised in that: comprise the following steps:
A () chooses one block of whole plate as filter plate body (8), and be processed into the size with down pipe base for nucleus fuel component and mate mutually;
B () is according to the position of opening of down pipe base for nucleus fuel component, it is determined that the filter opening (9) that need to offer and filter plate connect the position in hole (10);
C () offers position according to what filter opening (9) and filter plate connected hole (10), it is determined that the position of whole plate upper and lower surface fluting and size, then carry out groove milling to whole plate upper and lower surface, and the groove of upper and lower surface be space crossed structure formation filter opening (9);
D () processes filter plate in wide rib (12) position, boundary and connects hole (10), whole filter plate machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250547.8A CN102750991B (en) | 2012-07-19 | 2012-07-19 | The down pipe base for nucleus fuel component of a kind of band filter plate and filter plate complete processing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250547.8A CN102750991B (en) | 2012-07-19 | 2012-07-19 | The down pipe base for nucleus fuel component of a kind of band filter plate and filter plate complete processing thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102750991A CN102750991A (en) | 2012-10-24 |
| CN102750991B true CN102750991B (en) | 2016-06-01 |
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| CN201210250547.8A Active CN102750991B (en) | 2012-07-19 | 2012-07-19 | The down pipe base for nucleus fuel component of a kind of band filter plate and filter plate complete processing thereof |
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| CN103021477B (en) * | 2012-11-26 | 2015-06-03 | 中国核动力研究设计院 | Lower pipe base of reactor fuel assembly |
| WO2015089835A1 (en) * | 2013-12-20 | 2015-06-25 | 中科华核电技术研究院有限公司 | Lower tube socket and light-water reactor fuel assembly |
| CN104538064B (en) * | 2014-12-19 | 2017-05-31 | 上海核工程研究设计院 | A kind of fuel assembly bottom nozzle of equilibrium core entrance coolant flow |
| CN106736292A (en) * | 2016-12-28 | 2017-05-31 | 中核北方核燃料元件有限公司 | A kind of advanced pressurized water reactor fuel element base machining process |
| CN109935352A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | Fuel assembly and its bottom device and anti-foreign matter component applied to bottom device |
| CN115295177B (en) * | 2022-07-07 | 2024-03-19 | 中国核动力研究设计院 | Nuclear fuel assembly lower tube seat based on filter rod structure, filter assembly and application |
| CN115206557B (en) * | 2022-07-07 | 2024-01-30 | 中国核动力研究设计院 | Fuel assembly lower tube seat and filter assembly based on space curved surface channel |
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| FR2682213B1 (en) * | 1991-10-04 | 1994-01-07 | Framatome | LOWER TIP OF A FUEL ASSEMBLY FOR A WATER-COOLED NUCLEAR REACTOR. |
| US5361287A (en) * | 1994-03-29 | 1994-11-01 | B&W Fuel Company | Nuclear fuel assembly lower end fitting |
| FR2744556B1 (en) * | 1996-02-02 | 1998-04-24 | Framatome Sa | NUCLEAR FUEL ASSEMBLY HAVING IMPROVED TOP TIP |
| CN102651242B (en) * | 2012-05-14 | 2015-08-19 | 中科华核电技术研究院有限公司 | The anti-foreign matter plate of light-water reactor nuclear fuel assembly and bottom device |
| CN202650556U (en) * | 2012-07-19 | 2013-01-02 | 中国核动力研究设计院 | Nuclear fuel assembly lower tube socket with filter plate |
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2012
- 2012-07-19 CN CN201210250547.8A patent/CN102750991B/en active Active
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