CN102750990B - A kind of down pipe base for nucleus fuel component filter plate and complete processing thereof being convenient to processing - Google Patents
A kind of down pipe base for nucleus fuel component filter plate and complete processing thereof being convenient to processing Download PDFInfo
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- CN102750990B CN102750990B CN201210250522.8A CN201210250522A CN102750990B CN 102750990 B CN102750990 B CN 102750990B CN 201210250522 A CN201210250522 A CN 201210250522A CN 102750990 B CN102750990 B CN 102750990B
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- filter plate
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- filter
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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 a kind of down pipe base for nucleus fuel component filter plate being convenient to processing, primarily of filter plate body (5) and run through the filter opening (1) being arranged on filter plate body (5) and connect hole (4) form, described filter opening (1) is that space crossed structure is formed by two long strip shape grooves or at least two long strip shape holes. The invention also discloses the complete processing of this down pipe base for nucleus fuel component filter plate. The present invention can not only obtain good filter effect, refrigerant circulation area fraction height, and structural strength is enough, is convenient to install fixing filter plate; And difficulty of processing is low, tooling cost is low.
Description
Technical field
The present invention relates to the design field of down pipe base for nucleus fuel component filter plate, specifically refer to a kind of down pipe base for nucleus fuel component filter plate and the complete processing thereof of being convenient to processing.
Background technology
Nuclear fuel assembly is made up of some fuel sticks, guide pipe and location grid and upper bottom nozzle. The basic function of bottom nozzle is the lower structural features as nuclear fuel assembly, provides support for nuclear fuel assembly and interface, provides the passage of refrigerant inflow simultaneously and distributes refrigerant flow; In order to prevent foreign matter from entering nuclear fuel assembly screen work grid unit, above the web plate of bottom nozzle, filter plate need to be installed, filter foreign matter by this filter plate, play and filter and the effect of foreign matter in block water, thus reduce foreign matter and be clipped in nuclear fuel assembly to cause foreign matter to denude damaged risk.
Existing filter plate, by being distributed with some square holes running through its thickness direction in the plane, plays and filters and the effect of foreign matter in block water, but its processing and manufacturing difficulty, it is necessary to could be realized by physical process modes such as electro-chemical machining, manufacturing cost height.
Summary of the invention
It is an object of the invention to overcome the shortcoming and defect of above-mentioned prior art, thering is provided a kind of down pipe base for nucleus fuel component filter plate being convenient to processing, this filter plate can not only obtain good filter effect, refrigerant circulation area fraction height, structural strength is enough, is convenient to install fixing filter plate; And difficulty of processing is low, tooling cost is low.
The invention also discloses the complete processing of a kind of above-mentioned down pipe base for nucleus fuel component filter plate.
The object of the present invention is achieved through the following technical solutions: a kind of down pipe base for nucleus fuel component filter plate being convenient to processing, primarily of filter plate body and run through the filter opening being arranged on filter plate body and connect hole form, filter opening is mainly used in the circulation of cooling fluid and stops foreign matter, arranging the object connecting hole is be convenient to install nuclear fuel assembly, described filter opening is that space crossed structure is formed by two long strip shape grooves or at least two long strip shape holes, and the hole that this crossover location is formed is filter opening.
As a preferred embodiment of the present invention, described filter plate body is made up of one block of whole plate, and the upper and lower surface of whole plate 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, and the hole that this crossover location is formed is filter opening; 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, and namely the bottom land of two long strip shape grooves just intersects and communicates.
Above-mentioned long strip shape groove is preferably rectangle groove, wave-shaped groove or zigzag slot, but is not limited to this, it is possible to select separately according to practical situation.
As another kind of preferred version of the present invention, described filter plate body is made up of at least two pieces of thin plate superpositions, and some long strip shape holes all offered by every block thin plate, 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, and the hole that this crossover location is formed is filter opening; With the first preferred version the difference is that, being 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, and this hole is filter opening; The filter plate total thickness of the quantity of thin plate needed for reality and the thickness of monolithic thin plate chosen determine.
Above-mentioned long strip shape hole is preferably slot, waviness hole or zig-zag hole, but is not limited to this, it is possible to select separately according to practical situation.
In summary: above-mentioned two kinds of preferred versions are based on a design in fact, namely form filter opening by space crossed structure, thus reduce the difficulty of processing of filter plate, reduce 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, connect 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 connect hole and include 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 anti-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.
A complete processing for down pipe base for nucleus fuel component filter plate, comprises 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 position in the filter opening that need to offer and connection hole;
(c) according to filter opening and connect hole offer position, it is determined that whole plate upper and lower surface fluting position and size, then whole plate upper and lower surface is carried out groove milling, the groove of upper and lower surface be space crossed structure formation filter opening;
D () processes in wide position, rib boundary and connects hole, whole filter plate machines.
A complete processing for down pipe base for nucleus fuel component filter plate, comprises 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 position in the filter opening that need to offer and connection hole;
(c) according to filter opening and connect hole offer position, 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 in wide position, rib boundary and connects hole, whole filter plate machines.
Above-mentioned connection hole 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 forms filter opening by space crossed structure, and filter opening is combined to form Kong Qun, and hole group arranges and obtains filter effect well, refrigerant circulation area fraction height, and structural strength is enough, and the installation being convenient to filter plate is fixed;
(2) the present invention manufactures easy realization, 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 the present invention;
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram;
Fig. 3 is the B position partial enlargement figure of Fig. 2;
Fig. 4 is the long strip shape slot space decussate texture schematic diagram of embodiment 1;
Fig. 5 is that in embodiment 1, long strip shape groove is schematic shapes during rectangle;
Fig. 6 is that in embodiment 1, long strip shape groove is schematic shapes during waviness;
Fig. 7 is that in embodiment 1, long strip shape groove is schematic shapes during zig-zag;
Fig. 8 is thin-slab construction schematic diagram in embodiment 2;
Fig. 9 is the filter-plate structure schematic diagram that in embodiment 2, thin plate superposition is formed.
In accompanying drawing, name corresponding to Reference numeral is called: 1 filter opening; 2 wide ribs; 3 hole groups; 4 connection holes; 5 filter plate bodies; 6 narrow ribs; 7 steady pin holes; 8 long strip shape grooves; 9 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 1,2 and 3, the present invention is formed primarily of filter plate body 5, and this filter plate body 5 is one block of whole plate, and on described whole plate, also position of opening correspondence according to fuel assembly bottom nozzle has been offered and connected hole 4 and steady pin hole 7; The upper and lower surface of this whole plate has all offered some long strip shape grooves 8, and the shape of long strip shape groove 8 can be rectangle as shown in Figure 5, it is possible to is waviness as shown in Figure 6, or is zig-zag as shown in Figure 7; As shown in Figure 4, the long strip shape groove 8 being separately positioned on whole plate upper and lower surface is in space crossed structure, thus forms filter opening 1.
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 5 is divided into some cooling fluid circulating areas by the present invention, filter opening 1 in each cooling fluid circulating area forms a hole group 3, by wide rib 2 interval between adjacent holes group 3, connect the position, boundary that hole 4 is arranged on wide rib 2, by narrow rib 6 interval between adjacent filter opening 1; The width of described wide rib 2 is preferably 0.8mm ~ 10mm, and the width of narrow rib 6 is 0.2mm ~ 1.2mm.
The course of processing of above-mentioned filter plate is: (a) chooses one block of whole plate as filter plate body 5, 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 1 that need to offer and the position connecting hole 4; (c) according to filter opening 1 and connect hole 4 offer position, 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 8 whole plate upper and lower surface, and the long strip shape groove 8 of upper and lower surface forms filter opening 1 in space crossed structure; D () processes connect hole 4 in wide rib 2 position that has a common boundary, connect hole 4 and adopt the processing of traditional processing mode, and such as boring or pre-bore milling etc., whole filter plate machines.
Embodiment 2:
The present embodiment difference from Example 1 is, the thin plate superposition of filter plate body 5 at least two pieces shown in Fig. 8 is formed, every block thin plate has all been offered some long strip shape holes 9, described filter opening 1 is formed in space crossed structure by the long strip shape hole 9 that at least two are separately positioned on different thin plate, in order to better form filter opening 1, 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 is possible to the position, connection hole 4 between two pieces of thin plates increases pad makes it directly not fit.
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 9 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.
Long strip shape hole in the present embodiment is identical with the shape of the long strip shape groove in embodiment 1, it is possible to be rectangle, waviness or zig-zag; Thin plate forms the filter plate shown in Fig. 9 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 1 is identical with embodiment 1, does not repeat them here.
The course of processing of the filter plate of the present embodiment 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 1 that need to offer and the position connecting hole 4; (c) according to filter opening 1 and connect hole 4 offer position, it is determined that position of opening on every block thin plate and size, then form long strip shape hole 9 to thin plate punching perforate; After perforate completes, all thin plate superpositions being formed filter plate body 5, the long strip shape hole 9 on thin plate forms filter opening 1 in space crossed structure; D () processes connect hole 4 in wide rib 2 position that has a common boundary, connect hole 4 and adopt the processing of traditional processing mode, and whole filter plate machines.
As implied above, just can realize the present invention preferably.
Claims (5)
1. it is convenient to the down pipe base for nucleus fuel component filter plate of processing for one kind, it is characterized in that: primarily of filter plate body (5) and run through the filter opening (1) being arranged on filter plate body (5) and connect hole (4) form, described filter opening (1) is that space crossed structure is formed by two long strip shape grooves or at least two long strip shape holes;
Described filter plate body (5) is made up of one block of whole plate, and the upper and lower surface of whole plate has all offered some long strip shape grooves, and described filter opening (1) 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. a kind of down pipe base for nucleus fuel component filter plate being convenient to processing according to claim 1, it is characterised in that: described long strip shape groove is rectangle groove, wave-shaped groove or zigzag slot.
3. a kind of according to any one of claim 1��2 is convenient to the down pipe base for nucleus fuel component filter plate of processing, it is characterized in that: described filter plate body (5) is divided into some cooling fluid circulating areas, filter opening (1) composition Kong Qun (3) in each cooling fluid circulating area, by wide rib (2) interval between adjacent holes group (3), connect the position, boundary that hole (4) is arranged on wide rib (2), by narrow rib (6) interval between adjacent filter opening (1).
4. a kind of down pipe base for nucleus fuel component filter plate being convenient to processing according to claim 3, it is characterised in that: the width of described wide rib (2) is 0.8mm ~ 10mm.
5. a kind of down pipe base for nucleus fuel component filter plate being convenient to processing according to claim 3, it is characterised in that: the width of described narrow rib (6) is 0.2mm ~ 1.2mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250522.8A CN102750990B (en) | 2012-07-19 | 2012-07-19 | A kind of down pipe base for nucleus fuel component filter plate and complete processing thereof being convenient to processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250522.8A CN102750990B (en) | 2012-07-19 | 2012-07-19 | A kind of down pipe base for nucleus fuel component filter plate and complete processing thereof being convenient to processing |
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| Publication Number | Publication Date |
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| CN102750990A CN102750990A (en) | 2012-10-24 |
| CN102750990B true CN102750990B (en) | 2016-06-01 |
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| CN201210250522.8A Active CN102750990B (en) | 2012-07-19 | 2012-07-19 | A kind of down pipe base for nucleus fuel component filter plate and complete processing thereof being convenient to processing |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105849815B (en) * | 2013-12-20 | 2018-03-13 | 中广核研究院有限公司 | Bottom nozzle and light-water reactor fuel assembly |
| 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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| US4832905A (en) * | 1988-04-15 | 1989-05-23 | Combustion Engineering, Inc. | Lower end fitting debris collector |
| CN1046411A (en) * | 1989-04-12 | 1990-10-24 | 法玛通公司 | Have the fuel assembly lower end nozzle of a particulate filter arrangement and fuel assembly with a kind of like this end nozzle |
| CN1046410A (en) * | 1989-04-12 | 1990-10-24 | 法玛通公司 | The filter of nuclear reactor fuel parts lower sub |
| US5009839A (en) * | 1990-09-04 | 1991-04-23 | B&W Fuel Company | Nuclear fuel assembly bottom nozzle plate |
| US5030412A (en) * | 1990-05-04 | 1991-07-09 | Advanced Nuclear Fuels Corporation | Fuel assembly debris screen |
| US5361287A (en) * | 1994-03-29 | 1994-11-01 | B&W Fuel Company | Nuclear fuel assembly lower end fitting |
| CN202650558U (en) * | 2012-07-19 | 2013-01-02 | 中国核动力研究设计院 | Nuclear fuel component lower tube base filter plate convenient to process |
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2012
- 2012-07-19 CN CN201210250522.8A patent/CN102750990B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832905A (en) * | 1988-04-15 | 1989-05-23 | Combustion Engineering, Inc. | Lower end fitting debris collector |
| CN1046411A (en) * | 1989-04-12 | 1990-10-24 | 法玛通公司 | Have the fuel assembly lower end nozzle of a particulate filter arrangement and fuel assembly with a kind of like this end nozzle |
| CN1046410A (en) * | 1989-04-12 | 1990-10-24 | 法玛通公司 | The filter of nuclear reactor fuel parts lower sub |
| US5030412A (en) * | 1990-05-04 | 1991-07-09 | Advanced Nuclear Fuels Corporation | Fuel assembly debris screen |
| US5009839A (en) * | 1990-09-04 | 1991-04-23 | B&W Fuel Company | Nuclear fuel assembly bottom nozzle plate |
| US5361287A (en) * | 1994-03-29 | 1994-11-01 | B&W Fuel Company | Nuclear fuel assembly lower end fitting |
| CN202650558U (en) * | 2012-07-19 | 2013-01-02 | 中国核动力研究设计院 | Nuclear fuel component lower tube base filter plate convenient to process |
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| CN102750990A (en) | 2012-10-24 |
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