CN102969033A - 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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- CN102969033A CN102969033A CN2012104138628A CN201210413862A CN102969033A CN 102969033 A CN102969033 A CN 102969033A CN 2012104138628 A CN2012104138628 A CN 2012104138628A CN 201210413862 A CN201210413862 A CN 201210413862A CN 102969033 A CN102969033 A CN 102969033A
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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 the enhanced heat exchange technical field, be specifically related to the attached cinclides plate assembling of a kind of enhanced boiling heat transfer mould component, be used for the outer enhanced boiling heat transfer of dome head under the large nuclear-power reactor pressure vessel.
Background technology
May cause core meltdown during large nuclear-power reactor generation major accident, with fused mass cooling with hold that to stay in the reactor pressure vessel be the key measure of alleviation accident.By to reactor chamber water-filling, pressure vessel bottom hemispherical head is flooded, carry out the pool boiling cooling in the pressure vessel outside, be important measures alleviating major accident.Utilize boiling heat transfer and the passive natural circulation of pressure vessel outside water to flow, the decay heat of fused mass in the hemispherical head is taken away, thereby the generation of the even more serious accident process of follow-up consequence and a large amount of radiomaterials that nuclear leakage causes can be avoided and delay to the integrality that keeps pressure vessel to the release of environment.The outside surface of dome head under the pressure vessel of present large nuclear-power reactor, generally adopt common smooth surface, namely substantially also do not adopt at present the enhanced heat exchange measure, this mainly is because large nuclear-power reactor pressure vessel equipment is large equipment, reactor pressure vessel cylinder internal diameter such as the 1000MW unit reaches 4m, pressure vessel weight reaches more than 400 tons, therefore it is larger the outside surface of dome head under the Programs of Large Pressurized Vessel like this to be arranged the manufacture difficulty of enhanced heat exchange structure, the enhanced heat exchange measure of adopting also might cause harmful effect to intensity and the security of pressure vessel, even adopt the at present more porous coating of research, projection waits the enhanced heat exchange measure, in transportation and installation process, relatively be easy to damaged, and the reliability in the long-term operation process, validity also is 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 the boiling heat transfer critical heat flux density are assembled mould component.
The technical solution used in the present invention is:
This member comprises attached cinclides board component and fixation kit.Described attached cinclides board component is installed on the reactor pressure vessel outer wall and is supported fixing by fixation kit; Attached cinclides board component forms by interconnecting a plurality of attached cinclides plate unit that is integrated; Attached cinclides plate unit is AND DEWATERING FOR ORIFICE STRUCTURE, and the plate hole of a plurality of arranged in arrays is set on it, plays the effect of enhanced boiling heat transfer and raising critical heat flux density; The attached wall that is provided with a plurality of arranged in arrays in the inboard of attached cinclides plate unit props up part, and the inwall that makes attached cinclides plate unit props up part the part except attached wall, forms clearance C with the outer wall of reactor pressure vessel;
Attached cinclides plate unit is comprised of orifice plate and connection reinforcement side plate, and the 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 the reactor pressure vessel bottom that attaches, be the semisphere face, it perhaps is the billiard table spherical, perhaps being semisphere and columniform combinatorial surface, perhaps is 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 area in hole, the girth in 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 the 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 and is 40%-65%.
Described fixation kit is for propping up the connecting link cribbing in the bottom of containment; Perhaps be suspension bracket or the support that is installed in the sidepiece of containment; Perhaps for being installed in the suspension bracket on the reactor pressure vessel outer wall.
It is that the quadrilateral uniform array is arranged, the triangle uniform array is arranged or the hexagon uniform array is arranged that described plate hole and attached wall prop up part.
Described clearance C is no more than 6mm.
Described plate hole is divided into the different large plate hole of equivalent diameter and little plate hole.
Described plate hole is circular hole, it is tri-angle-holed to comprise, the combination bore form in polygonal hole, shoulder hole, bellmouth, petal hole, flanging bore, shutter hole or the above-mentioned various holes of rectangular opening.
It is fourth born of the same parents shape projection, rib shape projection, corrugated projection or columnar projections that described attached wall props up part.
Described attached cinclides board component covers the low head of reactor pressure vessel and the outer wall of the part cylindrical tube that is connected with low head; Or the part low head of covering reactor pressure vessel and the outer wall of the part cylindrical tube that is connected with low head; Or only cover the part low head of reactor pressure vessel.
The unit of described attached cinclides plate unit for being cut apart by warp and weft is so that make, install, overhaul, keep in repair and detect; Connected mode between each attached cinclides plate unit is one or several during bolt connects, welds, rivets.
The inboard of described orifice plate arranges little porous layer or rough surface.
The present invention also provides the attached cinclides plate assembling of a kind of enhanced boiling heat transfer based on front any one mould component, the outer wall of described attached cinclides board component arranges narrow slit runner outer cover plate, and forms a narrow slit runner between the inwall of the outer wall of attached cinclides board component and narrow slit runner outer cover plate; Narrow slit runner 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) remarkable enhanced boiling heat transfer process and improve critical heat flux density, thus can significantly improve security.
(2) because attached cinclides board component just is attached to the outside surface of pressure vessel, and manufacturing, installation and maintenance etc. are more convenient, make and installation quality guaranteed, the stable performance of enhanced heat exchange and raising critical heat flux density and reliably and with long-term.And the existing enhanced heat exchange technology (such as porous coating, projection etc.) that the pressure vessel outer wall is carried out modification, then its manufacturing, installation and maintenance etc. relatively bother, also be easy to damage, and in the long-term operation process, also may lose efficacy (as come off, crackle etc.), not only be difficult to monitoring but also be difficult to repair after more seriously losing efficacy.
(3) because attached cinclides board component just is attached to the outside surface of pressure vessel, can not produce to the intensity of pressure vessel any harmful effect.And the existing enhanced heat exchange technology (such as porous coating, projection etc.) that the pressure vessel outer wall is carried out modification, then may produce harmful effect to the intensity of pressure vessel, particularly long-time running may the major defects such as reason cracks such as concentrate owing to stress, and the major defect of the intensity that exerts an influence for some reason also is difficult to detect.
(4) owing to the outside surface at pressure vessel has covered attached cinclides board component, being equivalent to has increased heat-insulation layer at the outside surface of pressure vessel, can effectively reduce the radiation loss of the outside surface of pressure vessel, has certain energy-saving effect.
Description of drawings
Fig. 1 is the three-dimensional structure synoptic diagram of the attached cinclides plate assembling of a kind of enhanced boiling heat transfer of providing of first embodiment of the present invention mould component.
Fig. 2 is the theory structure synoptic diagram of the attached cinclides plate assembling of a kind of enhanced boiling heat transfer of providing of first embodiment of the present invention mould component.
Fig. 3 is the three-dimensional structure synoptic diagram of the attached cinclides board component that provides of the first embodiment of the present invention.
Fig. 4 is the three-dimensional sectional structure synoptic diagram of the attached cinclides board component that provides of the first embodiment of the present invention.
Fig. 5 is the three-dimensional sectional structure synoptic diagram of the attached cinclides board component that provides of the first embodiment of the present invention.
Fig. 6 is the three-dimensional sectional structure synoptic diagram of the attached cinclides plate unit that provides of the first embodiment of the present invention.
Fig. 7 is that the three-dimensional of the orifice plate that provides of the first embodiment of the present invention is analysed and observe the partial structurtes synoptic diagram.
Fig. 8 is the three-dimensional broken section structural representation of the orifice plate that provides of the first embodiment of the present invention.
Fig. 9 is that synoptic diagram is arranged in the perforate of the orifice plate that provides of the first embodiment of the present invention.
Figure 10 is that the two dimension that the perforate of the orifice plate of Fig. 9 is arranged is analysed and observe the partial structurtes synoptic diagram.
Figure 11 is that the two dimension that the perforate of the orifice plate of Fig. 9 is arranged is analysed and observe the partial structurtes synoptic diagram.
Figure 12 is another kind of fixation kit and the mounting structure synoptic diagram of the attached cinclides plate assembling of a kind of enhanced boiling heat transfer of providing of first embodiment of the present invention mould component.
Figure 13 is another fixation kit and the mounting structure synoptic diagram of the attached cinclides plate assembling of a kind of enhanced boiling heat transfer of providing of first embodiment of the present invention mould component.
Figure 14 is that the another kind of orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 15 is that another orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 16 is that another orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 17 is that another orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 18 is that a kind of orifice plate two dimension that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 19 is that another orifice plate two dimension that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 20 is that another orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 21 is that another orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 22 is that another orifice plate three-dimensional that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 23 is that the another kind of orifice plate two dimension that the first embodiment of the present invention provides is analysed and observe the partial structurtes synoptic diagram.
Figure 24 is that synoptic diagram is arranged in the another kind of perforate of the attached cinclides plate unit that provides of the first embodiment of the present invention.
Figure 25 is the three-dimensional structure synoptic diagram of the attached cinclides board component that provides of the second embodiment of the present invention.
Number in the figure:
The attached cinclides board component of 1-; The 2-fixation kit; The 3-reactor pressure vessel; The 4-containment; 5-reactor core fused mass; The 6-steam bubble that seethes with excitement; 7-narrow slit runner outer cover plate; The attached cinclides plate of 10-unit; The 11-plate hole; The attached wall of 12-props up part; The 13-orifice plate; 14-connection reinforcement side plate; The inboard of 15-orifice plate; The outside of 16-orifice plate; The little plate hole of 111-; The large plate hole of 112-; The 31-low head; The 32-cylindrical shell.
Embodiment
The invention provides the attached cinclides plate assembling of a kind of enhanced boiling heat transfer mould component, the present invention will be further described below in conjunction with the drawings and specific embodiments.
The first embodiment
As shown in Figure 1 to Figure 3, the attached cinclides plate assembling of enhanced boiling heat transfer mould component comprises attached cinclides board component 1 and fixation kit 2.Attached cinclides board component 1 is installed on reactor pressure vessel 3 outer walls and by fixation kit 2 supports and fixes, and the inwall of attached cinclides board component 1 can attach with the outer wall of the part of the reactor pressure vessel 3 of generation high heat flux under major accident; Attached cinclides board component 1 comprises and interconnects a plurality of attached cinclides plate unit 10 that is integrated that attached cinclides plate unit 10 is AND DEWATERING FOR ORIFICE STRUCTURE, is provided with the plate hole 11 of a plurality of arranged in arrays in attached cinclides plate unit 10; The attached wall that is provided with a plurality of arranged in arrays in attached cinclides plate unit inside 15 props up part 12 so that the outer wall of the inwall of attached cinclides board component 1 and reactor pressure vessel 3 props up on the outer wall of reactor pressure vessel 3 when attaching, and so that orifice plate 13 inwalls except attached wall props up part 12 and the outer wall of reactor pressure vessel 3 form certain clearance C.
The principle of work of the attached cinclides plate assembling of this enhanced boiling heat transfer mould component as shown in Figure 2.Reactor core melts when reactor generation major accident, reactor core fused mass 5 falls in the dome head of bottom of reactor pressure vessel 3, come pressure vessel outer wall carried out pool boiling cooling by to containment vessel 4 interior water-fillings so that pressure vessel bottom hemispherical head floods this moment.As long as the heat flux of the pressure vessel outer wall during the reactor core melting does not surpass boiling heat transfer critical heat flux density (being called for short CHF), the outside wall surface of reactor just can be cooled off fully in the mode of nucleate boiling heat exchange, thereby guarantees the integrality of container and the leakage of prevention nuke rubbish.Attached cinclides board component 1 in that the outer wall of reactor pressure vessel 3 is installed significantly improves its security thereby can significantly improve its CHF, is mainly manifested in:
(2) since attached cinclides plate unit inside 15 except attached wall props up part 12 and the outer wall of reactor pressure vessel 3 form certain clearance C, and at the plate hole 11 of a plurality of arranged in arrays that arrange at attached cinclides board component 1, obviously strengthened the wetting state of reactor pressure vessel 3 outer walls, especially under high hot-fluid boiling heat transfer condition so that heat exchange surface is difficult for dryly, significantly improve the boiling heat transfer critical heat flux;
(3) since attached cinclides plate unit inside 15 except attached wall props up part 12 and the outer wall of reactor pressure vessel 3 form certain clearance C, can form stable bubble core and force in time drains the steam that produces by the plate hole injection of a plurality of arranged in arrays, in enhanced boiling heat transfer, also the boiling heat transfer critical heat flux can be obviously improved, thereby security can be significantly improved.
For the ease of understanding, the below will describe in further detail the each several part structure of the described member of present embodiment.
Attached cinclides board component 1:
Reactor core fused mass 5 is accepted by the low head 31 of pressure vessel under major accident, is middle part and the top of reactor pressure vessel 3 low heads according to what existing theoretical analysis may produce high heat density.Therefore, attached cinclides board component 1 can be to cover the low head 31 of reactor pressure vessel 3 and the outer wall of the part cylindrical tube 32 that is connected with low head, as shown in Figure 4; Also can be to cover the part low head 31 of reactor pressure vessel 3 and the outer wall of the part cylindrical tube 32 that is connected with low head, as shown in Figure 5; It can also be the part low head 31 that only covers reactor pressure vessel 3.
Because the inwall of attached cinclides board component 1 is attached on the outer wall of reactor pressure vessel 3 bottoms, therefore the shape of the inwall of attached cinclides board component 1 is corresponding with the outer wall shape of reactor pressure vessel 3 bottoms that attach.It (is semisphere that the low head 31 of reactor current pressure vessel 3 adopts dome head, profile can be standard semisphere or approximate semisphere), therefore, the inwall of attached cinclides board component 1 can be semisphere face (standard semisphere or approximate semisphere) or billiard table spherical or semisphere and columniform combinatorial surface or billiard table sphere 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 two planes are divided into three parts with sphere, and the part in the middle of it is the billiard table spherical.In addition, if attached cinclides board component 1 covers the low head 31 of total overall reaction core pressure vessel 3 and the outer wall of the part cylindrical tube 32 that is connected with low head, then the internal face of attached cinclides board component 1 can be semisphere and columniform combinatorial surface, if the outer wall of the low head 31 of attached cinclides board component 1 cover part reactor pressure vessel 3 and the part cylindrical tube 32 that is 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, among Fig. 3 and Fig. 4, for the ease of making, install, overhaul, keep in repair and detecting, attached cinclides board component 1 is divided into a plurality of attached cinclides plates unit 10 by warp and weft, and a plurality of attached cinclides plates unit 10 connected mode each other can be one or several during bolt connects, welds, rivets.Particularly, ball shaped unit is cut apart for warp and weft in the attached cinclides plate unit 10 that forms attached cinclides board component 1, namely, and the spheric profile of the outward flange of attached cinclides plate unit 10 for cutting apart by warp and weft.
Attached cinclides plate unit 10 is AND DEWATERING FOR ORIFICE STRUCTURE, is provided with the plate hole 11 of a plurality of arranged in arrays in attached cinclides plate unit 10.The thickness of slab of general attached cinclides plate unit is no more than 8mm, recommends thickness of slab 1-3mm, can adopt in compressing and the welding fabrication one or both.Be provided with the plate hole 11 of a plurality of arranged in arrays in attached cinclides plate unit 10, can first perforate aftershaping also can first moulding after perforate; Boring method can adopt boring, punching, plasma cutting etc.; Plate hole 11 equivalent diameters generally are no more than 20mm, recommend plate hole equivalent diameter 2-10mm, and equivalent diameter is 4S/L, and wherein S is the area in hole, the girth in L hole; The percentage of open area of the plate hole 11 of arranged in arrays is not less than 30%, and the 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 the attached cinclides board component 1 and the ratio of attached cinclides board component 1 inner wall area.
Attached cinclides plate unit 10 is comprised of orifice plate 13 and connection reinforcement side plate 14, and its structure as shown in Figure 6.Wherein, orifice plate 13 is the major function part, plays enhanced boiling heat transfer and improves the effect of critical heat flux density, and mainly be for the ease of connecting and strengthen the intensity of attached cinclides plate unit 10 at the connection reinforcement side plate 14 of orifice plate 13 edge settings.Orifice plate 13 and connection reinforcement side plate 14 are the integral type structure, can adopt the method manufacturings such as compression molding, welding.
Fig. 7 and Fig. 8 are that the three-dimensional of orifice plate 13 is analysed and observe the partial structurtes synoptic diagram, wherein as seen from Figure 7 the three-dimensional partial structurtes in the outside 16 of orifice plate, as seen from Figure 8 the partial 3 d structure of the inboard 15 of orifice plate.As can be seen from Figures 7 and 8, the orifice plate 13 of present embodiment is provided with the plate hole 11 of two kinds of different-diameters in the large plate hole 111 of arranged in arrays and platelet hole 112, and the attached wall that also is provided with simultaneously arranged in arrays in the inboard of orifice plate 13 props up part 12.When orifice plate 13 inwalls were attached on the outer wall of reactor pressure vessel 3, attached wall propped up on the outer wall that part 12 is supported on reactor pressure vessel 3, and orifice plate 13 inwalls form certain gap with the outer wall of reactor pressure vessel 3 except attached wall props up part 12.The plate hole 11 that arranges on the orifice plate 13 can adopt the method manufacturings such as boring, punching, plasma cutting.The attached wall that arranges in the inboard of orifice plate 13 props up part 12, can adopt from orifice plate outside load mould and so that the inboard method manufacturing that forms fourth born of the same parents shape projection of orifice plate, and namely the attached wall of present embodiment props up part 12 and is fourth born of the same parents shape bulge-structure.
Fig. 9 provides the plate hole 11 of setting on a kind of orifice plate 13 and the arranged in arrays mode that attached wall props up part 12, is the quadrilateral arrangement, and Figure 10 and Figure 11 are the cross section sectional structure chart of arranged in arrays shown in Figure 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 in platelet hole 112, and C is that the height of projection that attached wall props up part 12 also is the gap of the outer wall of attached cinclides plate unit inside and reactor pressure vessel.The porosity of this orifice plate is approximately π (D
2+ d
2)/4A
2This quadrilateral is the i.e. square of equilateral quadrilateral, 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 recommending the scope of clearance C is 0.5mm-2mm, and the clearance C of present embodiment is 1mm; Attached cinclides plate unit 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 the thin-walled part moulding under the condition of intensity satisfying as far as possible, adopt the thin-walled part moulding not only make easier and also the enhanced heat exchange performance more excellent.In addition, the connection of a plurality of attached cinclides plate unit 10 of present embodiment is adjacent with bolts being integrated in connection reinforcement side plate place, and the work such as be easy for installation and maintenance like this.
For the wetting state of the inboard 15 that further increases orifice plate with further enhanced boiling heat transfer with improve critical heat flux density, present embodiment can arrange little porous layer or rough surface in the inboard 15 of orifice plate.Inboard 15 at orifice plate arranges little porous layer, such as the little porous coating of sintered metal particle, the little porous coating of sintering metal foam, corrode little porous layer, sandblast rough surface, processing rough surface etc., can strengthen the wetting state of the inboard 15 of orifice plate, in the inboard 15 that more is conducive to the liquid inlet handhole plate and the gap of the outer wall of reactor pressure vessel, thus further enhanced boiling heat transfer and raising critical heat flux density.
Fixation kit 2:
In Fig. 1 of present embodiment, fixation kit 2 is the connecting link cribbing, props up to be supported and fixed on reactor pressure vessel 3 outer walls in the bottom of containment 4 and with attached cinclides board component 1.
Figure 13 shows another fixation kit and mounting structure synoptic diagram, this fixation kit 2 is the suspension bracket on the outer wall that is installed in reactor pressure vessel 3, although at mounting suspension on the outer wall of reactor pressure vessel 3 certain impact may be arranged on the intensity of reactor pressure vessel, under the condition that guarantees safety, also can realize attached cinclides board component 1 is supported and fixed on function on reactor pressure vessel 3 outer walls by certain safety practice.
Plate hole 11:
In Fig. 7, plate hole 11 is circular hole, it also can be the profile hole of other structure, show the profile hole of a kind of square opening (rounding) and the combination of circular port such as Figure 14, wherein circular port also comprises large circular port 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 have been 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, in addition can be for tri-angle-holed, polygonal hole, petal hole, the array configuration in the isostructural profile hole of flanging bore (do not provide among the embodiment and implement legend) or above-mentioned various holes is as long as can realize the through-hole structure of the functions such as steam injection.
Attached wall props up part 12:
In Fig. 7 and Figure 14, attached wall props up part 12 and is fourth born of the same parents shape projection, also can be rib shape projection (as shown in figure 20) or corrugated projection (such as Figure 17, Figure 21, shown in Figure 22), can also be columnar projections (as shown in figure 23), as long as can realize the inwall of attached cinclides board component be propped up on the outer wall of reactor pressure vessel also so that the outer wall of orifice plate inwall and reactor pressure vessel forms certain gap.Propping up part at Fig. 7, Figure 14 to attached wall shown in Figure 22 is compressing structure, it also can be the structure of the method moulding such as welding, riveted joint, as shown in figure 23 be the welded post latch structure, former structure more simply is suitable for the occasion of clearance C less, and the slightly complicated relatively large occasion of clearance C that is suitable for of latter's structure.In addition, the attached wall of compressing orifice plate can also be propped up the perforate of part place to increase percentage of open area, perhaps prop up part (as shown in figure 14) to form the hole shape projection as the attached wall of orifice plate with tapping is compressing.
The plate hole 11 of above-described embodiment is the quadrilateral arranged in arrays, also can be other arrangements 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 according to hot-fluid be not all non-homogeneous layout, but uniform array is arranged and is more convenient for making.Above-described embodiment is provided with the plate hole of two kinds or three specifications, also can be a kind of plate hole of or plurality of specifications more than three kinds, but the plate hole that two kinds or three specifications are set can be taken into account and is convenient to make and good enhanced heat exchange performance.
The second embodiment
As shown in figure 25, the attached cinclides plate assembling of enhanced boiling heat transfer mould component comprises attached cinclides board component 1 and fixation kit 2, and narrow slit runner outer cover plate 7.Different from the first embodiment is that present embodiment is at the arranged outside narrow slit runner outer cover plate 7 of attached cinclides board component 1, and so that the inboard of the outside of attached cinclides board component 1 and narrow slit runner outer cover plate 7 forms a narrow slit runner.
For the structure that makes the attached cinclides plate of a kind of enhanced boiling heat transfer assembling mould component is more clear, some ingredients (such as fixation kit 2 etc.) have optionally been omitted in the accompanying drawing 25.Therefore, below describe and mainly to concentrate narrow slit runner outer cover plate, and for other parts identical with the first embodiment such as cinclides board component and fixation kits, hereinafter will no longer mention.
Narrow slit runner outer cover plate 7:
When the outer surface generation boiling heat transfer of reactor pressure vessel 3, the steam bubble that produces under the effect of buoyancy so that the liquid at the nearly wall place of the outside surface of reactor pressure vessel 3 flow in company with the natural convection that steam bubble produces upwards together, owing to be provided with narrow slit runner outer cover plate 7, the narrow slit runner between the outside surface of narrow slit runner outer cover plate 7 and attached cinclides board component 1 and reactor pressure vessel 3 is flow through in this natural convection, has obviously further strengthened the boiling heat transfer process at this place.
Concrete, as shown in figure 24, narrow slit runner outer cover plate 7 assembles for a plurality of cover plates so that manufacturing, installation, maintenance etc., narrow slit runner outer cover plate 7 with can adopt welding, bolt to connect being connected of attached cinclides board component 1 and the modes such as riveted joint, as long as form certain narrow slit runner between the outside surface of narrow slit runner outer cover plate 7 and attached cinclides board component 1 and reactor pressure vessel 3, this narrow slit runner can obviously further have been strengthened the boiling heat transfer process at this place.
Concrete, as shown in figure 24, narrow slit runner outer cover plate 7 is the smooth plate structure, also can be the venetian blind type plate structure, buckplate structure, corrugated board structures etc. are with further enhanced heat exchange and strengthen structural strength, can also be connected with web joint and connect and strengthen structural strength at the stiffening plate that arranges of every cover plate simultaneously.
Claims (16)
1. the attached cinclides plate of enhanced boiling heat transfer is assembled mould component, comprise attached cinclides board component (1) and fixation kit (2), it is characterized in that described attached cinclides board component (1) is installed on reactor pressure vessel (3) outer wall and is supported fixing by fixation kit (2); Attached cinclides board component (1) forms by interconnecting a plurality of attached cinclides plate unit (10) that is integrated; Attached cinclides plate unit (10) is AND DEWATERING FOR ORIFICE STRUCTURE, and the plate hole (11) of a plurality of arranged in arrays is set on it, plays the effect of enhanced boiling heat transfer and raising critical heat flux density; The attached wall that is provided with a plurality of arranged in arrays in the inboard of attached cinclides plate unit (10) props up part (12), makes the part of inwall except attached wall props up part (12) of attached cinclides plate unit (10), with the outer wall formation clearance C of reactor pressure vessel (3);
Attached cinclides plate unit (10) is comprised 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. the attached cinclides plate of a kind of enhanced boiling heat transfer according to claim 1 is assembled 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 the reactor pressure vessel that attaches (3) bottom, be the semisphere face, it perhaps is the billiard table spherical, perhaps being semisphere and columniform combinatorial surface, perhaps is the spherical and columniform combinatorial surface of billiard table.
3. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that the thickness of slab of described orifice plate (13) is no more than 8mm, adopts compacting or welding fabrication.
4. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 3 mould component is characterized in that the thickness of slab of described orifice plate (13) is preferably 1-3mm.
5. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component 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 area in hole, the girth in 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 area sum of upper all plate holes (11) of attached cinclides board component (1) and the ratio of attached cinclides board component (1) inner wall area.
6. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 5 mould component 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 and is 40%-65%.
7. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that, described fixation kit (2) is for propping up the connecting link cribbing in the bottom of containment (4); Perhaps be suspension bracket or the support that is installed in the sidepiece of containment (4); Perhaps for being installed in the suspension bracket on reactor pressure vessel (3) outer wall.
8. the attached cinclides plate of a kind of enhanced boiling heat transfer according to claim 1 is assembled mould component, it is characterized in that described plate hole (11) and attached wall prop up part (12) for the quadrilateral uniform array is arranged, the triangle uniform array is arranged or the hexagon uniform array is arranged.
9. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that described clearance C is no more than 6mm.
10. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that described plate hole (11) is divided into the different large plate hole (111) of equivalent diameter and little plate hole (112).
11. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component, it is characterized in that described plate hole (11) is circular hole, it is tri-angle-holed to comprise, the combination bore form in polygonal hole, shoulder hole, bellmouth, petal hole, flanging bore, shutter hole or the above-mentioned various holes of rectangular opening.
12. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that, described attached wall props up part (12) and is fourth born of the same parents shape projection, rib shape projection, corrugated projection or columnar projections.
13. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that described attached cinclides board component (1) covers the low head of reactor pressure vessel (3) and the outer wall of the part cylindrical tube that is connected with low head; Or the part low head of covering reactor pressure vessel (3) and the outer wall of the part cylindrical tube that is connected with low head; Or only cover the part low head of reactor pressure vessel (3).
14. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that described attached cinclides plate unit (10) is the unit of being cut apart by warp and weft, so that manufacturing, installation, maintenance, maintenance and detection; Connected mode between each attached cinclides plate unit (10) is one or several during bolt connects, welds, rivets.
15. the attached cinclides plate assembling of a kind of enhanced boiling heat transfer according to claim 1 mould component is characterized in that the inboard of described orifice plate (13) arranges little porous layer or rough surface.
16. the attached cinclides plate assembling of the enhanced boiling heat transfer based on any one among claim 1-15 mould component, it is characterized in that, the outer wall of described attached cinclides board component (1) arranges narrow slit runner outer cover plate (7), and forms a narrow slit runner between the inwall of the outer wall of attached cinclides board component (1) and narrow slit runner outer cover plate (7); Narrow slit runner 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 true CN102969033A (en) | 2013-03-13 |
| CN102969033B 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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Cited By (9)
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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 |
| CN104979021A (en) * | 2015-06-30 | 2015-10-14 | 浙江工业大学 | Novel nuclear reactor pressure vessel lower head structure |
| CN106251919A (en) * | 2016-08-24 | 2016-12-21 | 浙江工业大学 | Reactor pressure vessel security test system under major accident operating mode |
| CN107103936A (en) * | 2017-07-03 | 2017-08-29 | 四川大学 | A kind of truss-like flow distribution device and in-pile component |
| CN107170491A (en) * | 2017-07-14 | 2017-09-15 | 四川大学 | Flow distribution device in a kind of pressurized water type reactor based on dome structure |
| CN108806806A (en) * | 2018-06-27 | 2018-11-13 | 清华大学 | The nuclear reactor pressure container of the netted hollowed-out board shell of setting unit combined type |
| CN108831572A (en) * | 2018-06-27 | 2018-11-16 | 清华大学 | The nuclear reactor pressure container of combined, extended surface area plate shell is set |
| CN113035399A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | Self-driven drainage type efficient heat exchanger with built-in containment |
| CN113325028A (en) * | 2021-06-07 | 2021-08-31 | 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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| 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 |
| CN104979021A (en) * | 2015-06-30 | 2015-10-14 | 浙江工业大学 | Novel nuclear reactor pressure vessel lower head structure |
| CN106251919A (en) * | 2016-08-24 | 2016-12-21 | 浙江工业大学 | Reactor pressure vessel security test system under major accident operating mode |
| 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 |
| CN107103936A (en) * | 2017-07-03 | 2017-08-29 | 四川大学 | A kind of truss-like flow distribution device and in-pile component |
| 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 |
| CN107170491A (en) * | 2017-07-14 | 2017-09-15 | 四川大学 | Flow distribution device in a kind of pressurized water type reactor based on dome structure |
| CN108806806A (en) * | 2018-06-27 | 2018-11-13 | 清华大学 | The nuclear reactor pressure container of the netted hollowed-out board shell of setting unit combined type |
| CN108831572A (en) * | 2018-06-27 | 2018-11-16 | 清华大学 | The nuclear reactor pressure container of combined, extended surface area plate shell is set |
| 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 |
| CN113035399A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | Self-driven drainage type efficient heat exchanger with built-in containment |
| CN113325028A (en) * | 2021-06-07 | 2021-08-31 | 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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