CN102969033B - Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component - Google Patents
Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component Download PDFInfo
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- CN102969033B CN102969033B CN201210413862.8A CN201210413862A CN102969033B CN 102969033 B CN102969033 B CN 102969033B CN 201210413862 A CN201210413862 A CN 201210413862A CN 102969033 B CN102969033 B CN 102969033B
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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
A boiling heat-exchange reinforced wall-attached orifice plate assembly shell component relates to the technical field of reinforced heat exchange. A wall-attached orifice plate assembly is mounted on an outer wall of a reactor pressure vessel and is supported and fixed by a fixing assembly, and is composed of a plurality of wall-attached orifice plate units mutually connected with each other as one. The wall-attached orifice plate units are orifice plate structure and are provided with a plurality of plate holes in an array arrangement. A plurality of wall-attached supporting members in the array arrangement are arranged at the inner side of the wall-attached orifice plate units, so that a gap is formed between part of the inner wall of the wall-attached orifice plate units except the supporting members and the outer wall of the reactor pressure vessel. The wall-attached orifice plate units are composed of orifice plates and connecting and strengthening side plates, and the connecting and strengthening side plates are arranged at edges of the orifice plates. The component can substantially reinforce boiling heat-exchange process, improve critical hot-fluid density, and thus substantially improve security; and strengthens heat exchange and improve performance stability of critical hot-fluid density.
Description
Technical field
The present invention relates to enhanced heat exchange technical field, be specifically related to a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component, for the outer enhanced boiling heat transfer of dome head under large nuclear-power reactor pressure vessel.
Background technology
May cause core meltdown during large nuclear-power reactor generation major accident, fused mass cooling and holding being stayed in reactor pressure vessel is the key measure of alleviation accident.By to reactor chamber water-filling, pressure vessel bottom hemispherical head being flooded, carries out pool boiling cooling in pressure vessel outside, is the important measures alleviating major accident.Utilize boiling heat transfer and the passive natural circulation flowing of water outside pressure vessel, the decay heat of fused mass in hemispherical head is taken away, thus keep the integrality of pressure vessel, can avoid and delay the release to environment of a large amount of radiomaterials that the generation of the even more serious accident process of follow-up consequence and nuclear leakage cause.The outside surface of dome head under the pressure vessel of current large nuclear-power reactor, generally adopt common smooth surface, namely substantially also enhanced heat exchange measure is not adopted at present, this is mainly because large nuclear-power reactor pressure vessel equipment is large equipment, reactor pressure vessel cylinder internal diameter as 1000MW unit reaches 4m, pressure vessel weight reaches more than 400 tons, therefore the manufacture difficulty of enhanced heat exchange structure is arranged to the outside surface of dome head under Programs of Large Pressurized Vessel like this larger, the enhanced heat exchange measure adopted also likely causes harmful effect to the intensity of pressure vessel and security, even if adopt the porous coating that research is more at present, projection waits enhanced heat exchange measure, compare in transport and installation process and be easy to damaged, and the reliability in long-term operation process, validity is also difficult to controlled.
Summary of the invention
The object of the invention is to propose a kind ofly be easy to manufacture, installation, maintenance and significantly enhanced boiling heat transfer and the attached cinclides plate of a kind of enhanced boiling heat transfer that improves boiling heat transfer critical heat flux density can assemble mould component.
The technical solution used in the present invention is:
This component comprises attached cinclides board component and fixation kit.Described attached cinclides board component to be arranged on reactor pressure vessel outer wall and to be supported by fixation kit fixing; Attached cinclides board component forms by being interconnected the multiple attached cinclides Slab element be integrated; Attached cinclides Slab element is AND DEWATERING FOR ORIFICE STRUCTURE, it is arranged the plate hole of multiple arranged in arrays, plays effect of enhanced boiling heat transfer and raising critical heat flux density; Be provided with the attached wall support of multiple arranged in arrays in the inner side of attached cinclides Slab element, make the part of the inwall of attached cinclides Slab element except attached wall support, form clearance C with the outer wall of reactor pressure vessel;
Attached cinclides Slab element is made up of orifice plate and connection reinforcement side plate, and connection reinforcement side plate is arranged on the edge of orifice plate.
The inwall of described attached cinclides board component is attached on the outer wall of reactor pressure vessel bottom, the shape of the inwall of described attached cinclides board component is corresponding with the outer wall shape of attached reactor pressure vessel bottom, for semisphere face, or be billiard table spherical, or be semisphere and columniform combinatorial surface, or be the spherical and columniform combinatorial surface of billiard table.
The thickness of slab of described orifice plate is no more than 8mm, adopts compacting or welding fabrication.
The thickness of slab of described orifice plate is preferably 1-3mm.
The equivalent diameter of described plate hole is no more than 20mm, and described equivalent diameter is 4S/L, and wherein S is the girth in the area in hole, L hole; The percentage of open area of plate hole is not less than 30%, and the percentage of open area of plate hole is the area sum of all plate holes on attached cinclides board component and the ratio of attached cinclides board component inner wall area.
The equivalent diameter of described plate hole is preferably 2-10mm; The percentage of open area of plate hole is preferably as 40%-65%.
Described fixation kit is prop up the connecting link cribbing in the bottom of containment; Or be suspension bracket or the support of the sidepiece that is arranged on containment; Or for being arranged on the suspension bracket on reactor pressure vessel outer wall.
Described plate hole and attached wall support are that quadrilateral uniform array layout, triangle uniform arranged in arrays or hexagon uniform array are arranged.
Described clearance C is no more than 6mm.
The large plate hole that described plate hole is divided into equivalent diameter different and little plate hole.
Described plate hole is circular hole, it is tri-angle-holed to comprise, the polygonal hole of rectangular opening, shoulder hole, bellmouth, petal hole, flanging bore, shutter hole or above-mentioned various hole combination bore form.
Described attached wall support is that fourth born of the same parents shape is protruding, rib shape projection, corrugated projection or columnar projections.
The low head that described attached cinclides board component covers reactor pressure vessel and the outer wall of partial cylinder cylindrical shell be connected with low head; Or the part low head covering reactor pressure vessel and the outer wall of partial cylinder cylindrical shell be connected with low head; Or only cover the part low head of reactor pressure vessel.
Described attached cinclides Slab element is the unit split by warp and weft, so that manufacture, install, overhaul, keep in repair and detect; Connected mode between each attached cinclides Slab element be bolt connect, welding, riveted joint in one or several.
The inner side of described orifice plate arranges micro-porous layer or rough surface.
Present invention also offers a kind of enhanced boiling heat transfer based on any one above attached cinclides plate assembling mould component, the outer wall of described attached cinclides board component arranges narrow-gap annular tube outer cover plate, and forms a narrow-gap annular tube between the outer wall of attached cinclides board component and the inwall of narrow-gap annular tube outer cover plate; Narrow-gap annular tube outer cover plate is smooth plate structure, venetian blind type plate structure, buckplate structure or corrugated board structures.
Beneficial effect of the present invention is:
(1) can remarkable enhanced boiling heat transfer process and improve critical heat flux density, thus can security be significantly improved.
(2) because attached cinclides board component is just attached to the outside surface of pressure vessel, manufacture, install and maintenance etc. more convenient, manufacture and installation quality guaranteed, the stable performance of enhanced heat exchange and raising critical heat flux density and reliably and with long-term.And existing enhanced heat exchange technology (as porous coating, projection etc.) of pressure vessel outer wall being carried out to modification, then its manufacture, installation and maintenance etc. are cumbersome, also be easy to damage, and also may lose efficacy in long-term operation process (as come off, crackle etc.), be not only difficult to monitoring after more seriously losing efficacy but also be difficult to repair.
(3) because attached cinclides board component is just attached to the outside surface of pressure vessel, any harmful effect can not be produced to the intensity of pressure vessel.And existing enhanced heat exchange technology (as porous coating, projection etc.) of pressure vessel outer wall being carried out to modification, then may produce harmful effect to the intensity of pressure vessel, particularly long-time running the reason such as may to concentrate the major defect such as to crack due to stress, and the major defect of the intensity that has an impact for some reason is also difficult to detect.
(4) owing to covering attached cinclides board component at the outside surface of pressure vessel, be equivalent to add heat-insulation layer at the outside surface of pressure vessel, effectively can reduce the radiation loss of the outside surface of pressure vessel, there is certain energy-saving effect.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component that the first embodiment of the present invention provides.
Fig. 2 is the theory structure schematic diagram of a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component that the first embodiment of the present invention provides.
Fig. 3 is the three-dimensional structure schematic diagram of the attached cinclides board component that the first embodiment of the present invention provides.
Fig. 4 is the three-dimensional sectional structural representation of the attached cinclides board component that the first embodiment of the present invention provides.
Fig. 5 is the three-dimensional sectional structural representation of the attached cinclides board component that the first embodiment of the present invention provides.
Fig. 6 is the three-dimensional sectional structural representation of the attached cinclides Slab element that the first embodiment of the present invention provides.
Fig. 7 is the three-dimensional sectional partial structurtes schematic diagram of the orifice plate that the first embodiment of the present invention provides.
Fig. 8 is the three-dimensional broken section structural representation of the orifice plate that the first embodiment of the present invention provides.
Fig. 9 is that schematic diagram is arranged in the perforate of the orifice plate that the first embodiment of the present invention provides.
Figure 10 is that the two dimension that the perforate of the orifice plate of Fig. 9 is arranged analyses and observe partial structurtes schematic diagram.
Figure 11 is that the two dimension that the perforate of the orifice plate of Fig. 9 is arranged analyses and observe partial structurtes schematic diagram.
Figure 12 is another kind of fixation kit and the mounting structure schematic diagram of a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component that the first embodiment of the present invention provides.
Figure 13 is another fixation kit and the mounting structure schematic diagram of a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component that the first embodiment of the present invention provides.
Figure 14 is the another kind of orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 15 is another orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 16 is another orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 17 is another orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 18 is that a kind of orifice plate two dimension that the first embodiment of the present invention provides analyses and observe partial structurtes schematic diagram.
Figure 19 is that another orifice plate two dimension that the first embodiment of the present invention provides analyses and observe partial structurtes schematic diagram.
Figure 20 is another orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 21 is another orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 22 is another orifice plate three-dimensional sectional partial structurtes schematic diagram that the first embodiment of the present invention provides.
Figure 23 is that the another kind of orifice plate two dimension that the first embodiment of the present invention provides analyses and observe partial structurtes schematic diagram.
Figure 24 is that schematic diagram is arranged in the another kind of perforate of the attached cinclides Slab element that the first embodiment of the present invention provides.
Figure 25 is the three-dimensional structure schematic diagram of the attached cinclides board component that the second embodiment of the present invention provides.
Number in the figure:
The attached cinclides board component of 1-; 2-fixation kit; 3-reactor pressure vessel; 4-containment; 5-reactor core fused mass; 6-seethes with excitement steam bubble; 7-narrow-gap annular tube outer cover plate; The attached cinclides Slab element of 10-; 11-plate hole; The attached wall support of 12-; 13-orifice plate; 14-connection reinforcement side plate; The inner side of 15-orifice plate; The outside of 16-orifice plate; The large plate hole of 111-; The little plate hole of 112-; 31-low head; 32-cylindrical shell.
Embodiment
The invention provides a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component, below in conjunction with the drawings and specific embodiments, the present invention will be further described.
First embodiment
As shown in Figure 1 to Figure 3, enhanced boiling heat transfer attached cinclides plate assembling mould component comprises attached cinclides board component 1 and fixation kit 2.Attached cinclides board component 1 to be arranged on reactor pressure vessel 3 outer wall and to support fixing by fixation kit 2, and the inwall of attached cinclides board component 1 can attach with the outer wall of part of the reactor pressure vessel 3 producing high heat flux under major accident; Attached cinclides board component 1 comprises the multiple attached cinclides Slab element 10 being interconnected and being integrated, and attached cinclides Slab element 10 is AND DEWATERING FOR ORIFICE STRUCTURE, and attached cinclides Slab element 10 is provided with the plate hole 11 of multiple arranged in arrays; Prop up on the outer wall of reactor pressure vessel 3 when the 15 attached wall support 12 being provided with multiple arranged in arrays make the inwall of attached cinclides board component 1 and the outer wall of reactor pressure vessel 3 attach inside attached cinclides Slab element, and make orifice plate 13 inwall form certain clearance C with the outer wall of reactor pressure vessel 3 except attached wall support 12.
The principle of work of this enhanced boiling heat transfer attached cinclides plate assembling mould component as shown in Figure 2.When reactor generation major accident, reactor core melts, reactor core fused mass 5 falls in the dome head of the bottom of reactor pressure vessel 3, now by making pressure vessel bottom hemispherical head flood to water-filling in containment vessel 4, pool boiling cooling is carried out to pressure vessel outer wall.As long as the heat flux of pressure vessel outer wall during reactor core melting does not exceed boiling heat transfer critical heat flux density (being called for short CHF), the outside wall surface of reactor just can be cooled in the mode of nucleate boiling heat exchange fully, thus ensures the integrality of container and stop the leakage of nuke rubbish.At the attached cinclides board component 1 that the outer wall of reactor pressure vessel 3 is installed, its CHF can be significantly improved thus significantly improve its security, being mainly manifested in:
(1) plate hole 11 place of multiple arranged in arrays that can arrange on attached cinclides board component 1 forms stable strong steam and sprays, thus form stronger many longitudinal turbulences at nearly wall place and water formation is entrainmented, while enhanced boiling heat transfer, also obviously can delay the generation of mode boiling and improve boiling heat transfer critical heat flux;
(2) owing to 15 forming certain clearance C with the outer wall of reactor pressure vessel 3 except attached wall support 12 inside attached cinclides Slab element, and at the plate hole 11 of multiple arranged in arrays arranged on attached cinclides board component 1, clearly enhance the wetting state of reactor pressure vessel 3 outer wall, especially under high hot-fluid boiling heat transfer condition, heat exchange surface is not easily dried up, significantly improve boiling heat transfer critical heat flux;
(3) owing to 15 forming certain clearance C with the outer wall of reactor pressure vessel 3 except attached wall support 12 inside attached cinclides Slab element, can form stable bubble core and force makes produced steam be drained by the plate hole injection of multiple arranged in arrays in time, while enhanced boiling heat transfer, also can significantly improve boiling heat transfer critical heat flux, thus can security be significantly improved.
For the ease of understanding, the Each part of component described in the present embodiment will be described in further detail below.
Attached cinclides board component 1:
Under major accident, reactor core fused mass 5 is accepted by the low head 31 of pressure vessel, may produce the middle part for reactor pressure vessel 3 low head and the top of high heat density according to existing theoretical analysis.Therefore, attached cinclides board component 1 can be the outer wall of the low head 31 covering reactor pressure vessel 3 and the partial cylinder cylindrical shell 32 be connected with low head, as shown in Figure 4; Also can be the outer wall of the part low head 31 covering reactor pressure vessel 3 and the partial cylinder cylindrical shell 32 be connected with low head, as shown in Figure 5; It can also be the part low head 31 only covering reactor pressure vessel 3.
Inwall due to attached cinclides board component 1 is attached on the outer wall of reactor pressure vessel 3 bottom, and therefore the shape of the inwall of attached cinclides board component 1 is corresponding with the outer wall shape of attached reactor pressure vessel 3 bottom.The low head 31 of reactor current pressure vessel 3 adopts dome head (i.e. semisphere, profile can be standard semisphere or near hemispherical), therefore, the inwall of attached cinclides board component 1 can be semisphere face (standard semisphere or near hemispherical) or billiard table spherical or semisphere and columniform combinatorial surface or billiard table is spherical and columniform combinatorial surface.Particularly, if attached cinclides board component 1 covers the outer wall of the low head 31 of total overall reaction core pressure vessel 3, then the internal face of attached cinclides board component 1 can be semisphere face (as shown in Figure 4), if the outer wall of the low head 31 of attached cinclides board component 1 cover part reactor pressure vessel 3, then the internal face of attached cinclides board component 1 can be billiard table spherical (as shown in Figure 5).Described billiard table spherical is that sphere is divided into three parts by two planes, and the part in the middle of it is billiard table spherical.In addition, if the low head 31 that attached cinclides board component 1 covers total overall reaction core pressure vessel 3 and the outer wall of partial cylinder cylindrical shell 32 be connected with low head, then the internal face of attached cinclides board component 1 can be semisphere and columniform combinatorial surface, if the low head 31 of attached cinclides board component 1 cover part reactor pressure vessel 3 and the outer wall of partial cylinder cylindrical shell 32 be connected with low head, then the internal face of attached cinclides board component 1 can be the spherical and columniform combinatorial surface of billiard table.
At Fig. 1, in Fig. 3 and Fig. 4, for the ease of manufacturing, install, overhaul, keep in repair and detecting, attached cinclides board component 1 is divided into multiple attached cinclides Slab element 10 by warp and weft, multiple attached cinclides Slab element 10 connected mode each other can be bolt connect, welding, riveted joint in one or several.Particularly, form the attached cinclides Slab element 10 of attached cinclides board component 1 for warp and weft segmentation ball shaped unit, namely, the outward flange of attached cinclides Slab element 10 is the spheric profile by warp and weft segmentation.
Attached cinclides Slab element 10 is AND DEWATERING FOR ORIFICE STRUCTURE, and attached cinclides Slab element 10 is provided with the plate hole 11 of multiple arranged in arrays.The thickness of slab of general attached cinclides Slab element is no more than 8mm, recommends thickness of slab 1-3mm, can adopt one or both in compressing and welding fabrication.Attached cinclides Slab element 10 is provided with the plate hole 11 of multiple arranged in arrays, can first perforate aftershaping also can first shaping rear perforate; Boring method can adopt boring, punching, plasma cut etc.; Plate hole 11 equivalent diameter is generally no more than 20mm, and recommend plate hole equivalent diameter 2-10mm, equivalent diameter is 4S/L, and wherein S is the girth in the area in hole, L hole; The percentage of open area of the plate hole 11 of arranged in arrays is not less than 30%, and recommendation percentage of open area is 40%-65%, and the percentage of open area of plate hole is defined as the area sum of all perforates on attached cinclides board component 1 and the ratio of attached cinclides board component 1 inner wall area.
Attached cinclides Slab element 10 is made up of orifice plate 13 and connection reinforcement side plate 14, and its structure as shown in Figure 6.Wherein, orifice plate 13 is major function part, play effect of enhanced boiling heat transfer and raising critical heat flux density, and the connection reinforcement side plate 14 arranged at orifice plate 13 edge is mainly for the ease of connecting and strengthen the intensity of attached cinclides Slab element 10.Orifice plate 13 and connection reinforcement side plate 14 are integral type structure, can adopt the manufacture of the method such as compression molding, welding.
Fig. 7 and Fig. 8 is the three-dimensional sectional partial structurtes schematic diagram of orifice plate 13, wherein the three-dimensional partial structurtes in the outside 16 of orifice plate as seen from Figure 7, the partial 3 d structure of the inner side 15 of orifice plate as seen from Figure 8.As can be seen from Figures 7 and 8, the orifice plate 13 of the present embodiment is provided with the plate hole 11 of the large plate hole 111 of arranged in arrays and two kinds of different-diameters of little plate hole 112, is also provided with the attached wall support 12 of arranged in arrays in the inner side of orifice plate 13 simultaneously.When orifice plate 13 inwall is attached on the outer wall of reactor pressure vessel 3, attached wall support 12 is supported on the outer wall of reactor pressure vessel 3, and orifice plate 13 inwall forms certain gap with the outer wall of reactor pressure vessel 3 except attached wall support 12.The plate hole 11 that orifice plate 13 is arranged, can adopt the method manufactures such as boring, punching, plasma cut.The attached wall support 12 arranged in the inner side of orifice plate 13, can adopt load mould outside orifice plate and make to be formed inside orifice plate the method manufacture of fourth born of the same parents shape projection, namely the attached wall support 12 of the present embodiment is fourth born of the same parents shape bulge-structure.
Fig. 9 provides the matrix arrangement of the plate hole 11 and attached wall support 12 that a kind of orifice plate 13 is arranged, and is quadrilateral arrangement, the cross section structural drawing that Figure 10 and Figure 11 is arranged in arrays shown in Fig. 9.In Fig. 9, Figure 10 and Figure 11, A is array center's square, and D is the diameter of large plate hole 111, and d is the diameter of little plate hole 112, the C gap that to be the height of projection of attached wall support 12 be also with the outer wall of reactor pressure vessel inside attached cinclides Slab element.The porosity of this orifice plate is approximately π (D
2+ d
2)/4A
2.This quadrilateral is equilateral quadrilateral i.e. square, also can the equilateral quadrilateral of right and wrong.
Particularly, in the present embodiment, D=6mm, d=4mm, A=10mm, then its porosity is approximately 41%.General clearance C is no more than 6mm, and the scope of recommending clearance C is 0.5mm-2mm, and the clearance C of the present embodiment is 1mm; Attached cinclides Slab element 10 is by the thin-walled part compression molding of thickness 2mm, and general thickness of slab is no more than 8mm, recommends thickness of slab 1-3mm, adopts thin-walled part shaping under the condition meeting intensity as far as possible, adopt thin-walled part shaping not only manufacture more easily and also enhanced heat exchange performance more excellent.In addition, the connection of the multiple attached cinclides Slab element 10 of the present embodiment is integrated adjacent connection reinforcement side plate place is with bolts, and the work such as be easy for installation and maintenance like this.
In order to further increase the wetting state of the inner side 15 of orifice plate with further enhanced boiling heat transfer and raising critical heat flux density, the present embodiment can arrange micro-porous layer or rough surface in the inner side 15 of orifice plate.In the inner side 15 of orifice plate, micro-porous layer is set, porous coating as micro-in sintered metal particle, the micro-porous coating of sintering metal foam, corrode micro-porous layer, blasted rough surface, processing rough surface etc., the wetting state of the inner side 15 of orifice plate can be strengthened, more be conducive to the inner side 15 of liquid inlet handhole plate with the gap of the outer wall of reactor pressure vessel, thus can enhanced boiling heat transfer and raising critical heat flux density further.
Fixation kit 2:
In Fig. 1 of the present embodiment, fixation kit 2 is connecting link cribbing, props up in the bottom of containment 4 and is supported and fixed on reactor pressure vessel 3 outer wall by attached cinclides board component 1.
Fixation kit 2 can for the various fixation kits used in mechanical structure field, as long as can realize it attached cinclides board component 1 to be supported and fixed on function on reactor pressure vessel 3 outer wall.Such as, Figure 12 shows a kind of fixation kit 2 that can be used for another structure of the present embodiment.In fig. 12, fixation kit 2 for be fixed on reactor pressure vessel 3 is installed containment bottom fixed sidewall suspension bracket on sidewall, or fixation kit 2 for be fixed on reactor pressure vessel 3 is installed containment bottom fixed sidewall support (not providing legend) on sidewall.The fixation kit 2 of above-mentioned two kinds of support/hanger structures, namely the connecting link cribbing shown in Fig. 1 with the fixed sidewall suspension bracket in Figure 12 or support, directly be not connected with reactor pressure vessel 3 (as welded, bolt connection etc.), adverse effect can not be had to the intensity etc. of reactor pressure vessel 3, also be convenient to installation and maintenance.
Figure 13 shows another fixation kit and mounting structure schematic diagram, this fixation kit 2 is for being arranged on the suspension bracket on the outer wall of reactor pressure vessel 3, although mounting suspension may have a certain impact to the intensity of reactor pressure vessel on the outer wall at reactor pressure vessel 3, under the condition ensureing safety, also can be realized the function be supported and fixed on by attached cinclides board component 1 on reactor pressure vessel 3 outer wall by certain safety practice.
Plate hole 11:
In the figure 7, plate hole 11 is circular hole, also can be the profile hole of other structure, as Figure 14 shows the profile hole of a kind of square opening (rounding) and the combination of circular port, wherein circular port also comprises large circular apertures and small circular holes, its percentage of open area is about 45%, Figure 15 shows a kind of profile hole of shoulder hole, Figure 16 shows a kind of profile hole of strip hole, its percentage of open area is about 50%, Figure 17, the profile hole of a kind of strip hole (rounding) and the combination of circular port are gone out, its percentage of open area is about 57%, Figure 18 shows a kind of profile hole of shutter, Figure 19 shows a kind of profile hole of pyramidal structure, can be tri-angle-holed in addition, polygonal hole, petal hole, the array configuration in the isostructural profile hole of flanging bore (do not provide in embodiment and implement legend) or above-mentioned various hole, as long as the through-hole structure of the functions such as steam injection can be realized.
Attached wall support 12:
In Fig. 7 and Figure 14, attached wall support 12 is that fourth born of the same parents shape is protruding, also can be rib shape projection (as shown in figure 20) or corrugated projection (as shown in Figure 17, Figure 21, Figure 22), it can also be columnar projections (as shown in figure 23), as long as the inwall of attached cinclides board component to be realized to prop up on the outer wall of reactor pressure vessel and to make the outer wall of orifice plate inwall and reactor pressure vessel form certain gap.Shown in Fig. 7, Figure 14 to Figure 22, attached wall support is compressing structure, also can be the shaping structure of the methods such as welding, riveted joint, as shown in figure 23 be welded post latch structure, former structure is more simply suitable for the relatively little occasion of clearance C, and the latter's structure is slightly complicated is suitable for the relatively large occasion of clearance C.In addition, can also by attached wall support place's perforate of compressing orifice plate to increase percentage of open area, or by compressing for tapping to form the protruding attached wall support (as shown in figure 14) as orifice plate of hole shape.
The plate hole 11 of above-described embodiment is quadrangular array layout, also can be other arrangement such as triangular arrangement (as shown in figure 23) or hexagon (not providing legend).The plate hole of above-described embodiment is that uniform array is arranged, also can not be all nonuniform mutation operator according to hot-fluid, but uniform array is arranged and is more convenient for manufacturing.Above-described embodiment is provided with the plate hole of two kinds or three specifications, also can be a kind of or the plate hole of the plurality of specifications of more than three kinds, but the plate hole arranging two kinds or three specifications can be taken into account and is convenient to manufacture and excellent enhanced heat exchange performance.
Second embodiment
As shown in figure 25, enhanced boiling heat transfer attached cinclides plate assembling mould component comprises attached cinclides board component 1 and fixation kit 2, and narrow-gap annular tube outer cover plate 7.With the first embodiment unlike, the present embodiment at the arranged outside narrow-gap annular tube outer cover plate 7 of attached cinclides board component 1, and makes the outside of attached cinclides board component 1 and the inner side of narrow-gap annular tube outer cover plate 7 form a narrow-gap annular tube.
In order to make the structure of a kind of enhanced boiling heat transfer attached cinclides plate assembling mould component more clear, in accompanying drawing 25, optionally eliminate some ingredients (as fixation kit 2 etc.).Therefore, below describe and mainly will concentrate narrow-gap annular tube outer cover plate, and for other parts identical with the first embodiment such as cinclides board component and fixation kits, hereafter will no longer mention.
Narrow-gap annular tube outer cover plate 7:
When the outer surface generation boiling heat transfer of reactor pressure vessel 3, the steam bubble produced makes the liquid at the nearly wall place of the outside surface of reactor pressure vessel 3 produce natural convection flowing upwards together in company with steam bubble under the effect of buoyancy, owing to being provided with narrow-gap annular tube outer cover plate 7, this natural convection flows through narrow-gap annular tube outer cover plate 7 and the narrow-gap annular tube between attached cinclides board component 1 and the outside surface of reactor pressure vessel 3, obviously further enhances the boiling heat transfer process at this place.
Concrete, as shown in figure 24, narrow-gap annular tube outer cover plate 7 for multiple cover plate assemble so that manufacture, install, maintenance etc., narrow-gap annular tube outer cover plate 7 can adopt with the connection of attached cinclides board component 1 weld, bolt connects and the mode such as riveted joint, as long as narrow-gap annular tube outer cover plate 7 and form certain narrow-gap annular tube between attached cinclides board component 1 and the outside surface of reactor pressure vessel 3, this narrow-gap annular tube obviously can further enhance the boiling heat transfer process at this place.
Concrete, as shown in figure 24, narrow-gap annular tube outer cover plate 7 is smooth plate structure, also can be venetian blind type plate structure, buckplate structure, corrugated board structures etc. are with further enhanced heat exchange and strengthen structural strength, can also arrange stiffening plate with web joint so that be connected and strengthen structural strength on every sheet cover plate simultaneously.
Claims (16)
1. an enhanced boiling heat transfer attached cinclides plate assembling mould component, comprise attached cinclides board component (1) and fixation kit (2), it is characterized in that, described attached cinclides board component (1) to be arranged on reactor pressure vessel (3) outer wall and to be supported by fixation kit (2) fixing; Attached cinclides board component (1) forms by being interconnected the multiple attached cinclides Slab element (10) be integrated; Attached cinclides Slab element (10) is AND DEWATERING FOR ORIFICE STRUCTURE, it is arranged the plate hole (11) of multiple arranged in arrays, plays effect of enhanced boiling heat transfer and raising critical heat flux density; Be provided with the attached wall support (12) of multiple arranged in arrays in the inner side of attached cinclides Slab element (10), make the part of the inwall of attached cinclides Slab element (10) except attached wall support (12), form clearance C with the outer wall of reactor pressure vessel (3);
Attached cinclides Slab element (10) is made up of orifice plate (13) and connection reinforcement side plate (14), and connection reinforcement side plate (14) is arranged on the edge of orifice plate (13).
2. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, the inwall of described attached cinclides board component (1) is attached on the outer wall of reactor pressure vessel (3) bottom, the shape of the inwall of described attached cinclides board component (1) is corresponding with the outer wall shape of attached reactor pressure vessel (3) bottom, for semisphere face, or be billiard table spherical, or be semisphere and columniform combinatorial surface, or be the spherical and columniform combinatorial surface of billiard table.
3. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, the thickness of slab of described orifice plate (13) is no more than 8mm, adopts compacting or welding fabrication.
4. a kind of enhanced boiling heat transfer according to claim 3 attached cinclides plate assembling mould component, it is characterized in that, the thickness of slab of described orifice plate (13) is preferably 1-3mm.
5. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, the equivalent diameter of described plate hole (11) is no more than 20mm, and described equivalent diameter is 4S/L, and wherein S is the girth in the area in hole, L hole; The percentage of open area of plate hole (11) is not less than 30%, and the percentage of open area of plate hole is the upper area sum of all plate holes (11) of attached cinclides board component (1) and the ratio of attached cinclides board component (1) inner wall area.
6. a kind of enhanced boiling heat transfer according to claim 5 attached cinclides plate assembling mould component, it is characterized in that, the equivalent diameter of described plate hole (11) is preferably 2-10mm; The percentage of open area of plate hole (11) is preferably as 40%-65%.
7. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, is characterized in that, described fixation kit (2) is prop up the connecting link cribbing in the bottom of containment (4); Or be suspension bracket or the support of the sidepiece that is arranged on containment (4); Or for being arranged on the suspension bracket on reactor pressure vessel (3) outer wall.
8. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, described plate hole (11) and attached wall support (12) are that quadrilateral uniform array is arranged, triangle uniform arranged in arrays or hexagon uniform array arrange.
9. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, described clearance C is no more than 6mm.
10. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, is characterized in that, the large plate hole (111) that described plate hole (11) is divided into equivalent diameter different and little plate hole (112).
11. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, described plate hole (11) is circular hole, comprise the combination bore form in the polygonal hole of tri-angle-holed, rectangular opening, shoulder hole, bellmouth, petal hole, flanging bore, shutter hole or above-mentioned various hole.
12. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, is characterized in that, described attached wall support (12) is for fourth born of the same parents shape is protruding, rib shape projection, corrugated projection or columnar projections.
13. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, is characterized in that, the low head that described attached cinclides board component (1) covers reactor pressure vessel (3) and the outer wall of partial cylinder cylindrical shell be connected with low head; Or the part low head covering reactor pressure vessel (3) and the outer wall of partial cylinder cylindrical shell be connected with low head; Or only cover the part low head of reactor pressure vessel (3).
14. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, described attached cinclides Slab element (10) is the unit split by warp and weft, so that manufacture, install, overhaul, keep in repair and detect; Connected mode between each attached cinclides Slab element (10) be bolt connect, welding, riveted joint in one or several.
15. a kind of enhanced boiling heat transfer according to claim 1 attached cinclides plate assembling mould component, it is characterized in that, the inner side of described orifice plate (13) arranges micro-porous layer or rough surface.
16. 1 kinds based on the attached cinclides plate assembling of the enhanced boiling heat transfer of any one in claim 1-15 mould component, it is characterized in that, the outer wall of described attached cinclides board component (1) arranges narrow-gap annular tube outer cover plate (7), and forms a narrow-gap annular tube between the inwall of the outer wall of attached cinclides board component (1) and narrow-gap annular tube outer cover plate (7); Narrow-gap annular tube outer cover plate (7) is smooth plate structure, venetian blind type plate structure, buckplate structure or corrugated board structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413862.8A CN102969033B (en) | 2012-10-25 | 2012-10-25 | Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413862.8A CN102969033B (en) | 2012-10-25 | 2012-10-25 | Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component |
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| Publication Number | Publication Date |
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| CN102969033A CN102969033A (en) | 2013-03-13 |
| CN102969033B true CN102969033B (en) | 2015-04-15 |
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| CN201210413862.8A Expired - Fee Related CN102969033B (en) | 2012-10-25 | 2012-10-25 | Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component |
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| CN104810068A (en) * | 2014-01-26 | 2015-07-29 | 上海核工程研究设计院 | Pressure container with fins on outer wall surface |
| CN104979021B (en) * | 2015-06-30 | 2017-11-07 | 浙江工业大学 | A kind of nuclear reactor pressure container low head structure |
| CN106251919B (en) * | 2016-08-24 | 2018-06-01 | 浙江工业大学 | Reactor pressure vessel security test system under major accident operating mode |
| CN107103936B (en) * | 2017-07-03 | 2023-09-08 | 中国核动力研究设计院 | Truss type flow distribution device and internal pile member |
| CN107170491B (en) * | 2017-07-14 | 2023-07-04 | 中国核动力研究设计院 | Pressurized water reactor flow distribution device based on dome structure |
| CN108806806B (en) * | 2018-06-27 | 2020-06-19 | 清华大学 | Nuclear reactor pressure vessel provided with unit combined type netted hollow plate shell |
| CN108831572B (en) * | 2018-06-27 | 2020-10-27 | 清华大学 | Nuclear reactor pressure vessel with combined extended surface area plate shell |
| CN113035399B (en) * | 2021-03-05 | 2022-11-15 | 哈尔滨工程大学 | Self-driven drainage type efficient heat exchanger with built-in containment |
| CN113325028B (en) * | 2021-06-07 | 2022-05-24 | 中国核动力研究设计院 | Boiling critical experiment device for unstable flow of natural circulation system and control method |
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