CN108831572A - The nuclear reactor pressure container of combined, extended surface area plate shell is set - Google Patents
The nuclear reactor pressure container of combined, extended surface area plate shell is set Download PDFInfo
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- CN108831572A CN108831572A CN201810674610.8A CN201810674610A CN108831572A CN 108831572 A CN108831572 A CN 108831572A CN 201810674610 A CN201810674610 A CN 201810674610A CN 108831572 A CN108831572 A CN 108831572A
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- extended surface
- surface area
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- combined
- plate shell
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
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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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of nuclear reactor pressure containers that combined, extended surface area plate shell is arranged, including：Cylinder, it is interior to be equipped with accommodation space；Combined, extended surface area plate shell, it is arranged on the outer surface of the lower part of cylinder and is connected as one, the multiple extended surface area Shell Finite Elements being arranged in including closely spaced array on barrel outer surface, wherein, extended surface area Shell Finite Element includes connection orifice layer and extended surface lamination, connect the orifice layer that orifice layer is the array hole with penetrability, extended surface lamination includes the micro- fin or/and microtrabeculae of closely spaced array arrangement, so that the boiling heat transfer heat dissipation area of nuclear reactor pressure container lower area extends one times or more.The nuclear reactor pressure container passes through the combined, extended surface area plate shell that is arranged in cylinder lower external face, significantly improve the cooling critical heat flux density that boils outside nuclear reactor pressure container, it is simple easily to realize to significantly improve the safety and reliability of pressure vessel.
Description
Technical field
The present invention relates to technical field of heat exchange, in particular to a kind of nuclear reactor that combined, extended surface area plate shell is set
Pressure vessel.
Background technique
Large nuclear power station nuclear reactor may cause core meltdown when major accident occurs, and fusant is under the effect of gravity
It falls into lower head of pressure vessel.It is the key that alleviate accident process in reactor pressure vessel by fusant cooling and withholding
Measure.By submerging the lower part of pressure vessel to reactor chamber water-filling, pool boiling is carried out in the outer surface of pressure vessel
It is cooling, it is an important measures for alleviating major accident.Using water on the outside of pressure vessel boiling heat transfer and passive follow naturally
Circulation is dynamic, the decay heat of fusant in lower head of pressure vessel is taken away, to keep the integrality of pressure vessel, avoid and prolong
Delay a large amount of releases of the radioactive substance to environment caused by the generation and nuclear leakage of the even more serious accident process of subsequent consequence.
Due to the enlargement of Nuclear Power Station reactor and the requirements at the higher level of safety, under major accident, existing nuclear reaction
The cooling heat exchange property of boiling heat transfer, the boiling heat transfer critical heat flux density of especially passive cooling outside core pressure vessel
(CriticalHeat Flux, abbreviation CHF), needs to be further increased.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, it is an object of the invention to propose a kind of nuclear reactor pressure appearance that combined, extended surface area plate shell is arranged
Device can effectively reduce the degree of superheat of the outside wall surface boiling heat transfer of nuclear reactor pressure container under severe accident conditions, significantly improve
The wetability of wall surface significantly improves the cooling critical heat flux density of the outside wall surface boiling of nuclear reactor pressure container, thus significantly
Improve the safety and reliability of nuclear reactor pressure container, and simple easily realization.
In order to achieve the above objectives, the embodiment of the present invention proposes a kind of nuclear reaction that combined, extended surface area plate shell is arranged
Core pressure vessel, including：Cylinder, the cylinder is interior to be equipped with accommodation space；Combined, extended surface area plate shell, the combined type expand
It on the outer surface for the lower part that the cylinder is arranged in exhibition surface area plate shell and is connected as one, and the combined, extended surface
Product plate shell includes multiple extended surface area Shell Finite Elements that closely spaced array is arranged on the outer surface of the cylinder, wherein described
Extended surface area Shell Finite Element includes connection orifice layer and extended surface lamination, and the connection orifice layer is the array with penetrability
The orifice layer in hole, the extended surface lamination includes the micro- fin or/and microtrabeculae of closely spaced array arrangement, so that nuclear reactor pressure
The boiling heat transfer heat dissipation area in lower vessel portion region extends one times or more.
The nuclear reactor pressure container of the setting combined, extended surface area plate shell of the embodiment of the present invention, by nuclear reaction
The combined, extended surface area plate shell of core pressure vessel outer surface setting, can dramatically increase the nuclear reaction stacking pressure under major accident
Boiling cooling heat exchange area in force container outer surface simultaneously forms a large amount of nucleus of boiling, and the wall superheat of pressure vessel is effectively reduced
Degree；Meanwhile combined, extended surface area plate shell sucks cooling water using capillary force, constantly soaks Boiling Heat Transfer Surfaces, significantly mentions
High wettability, and combined, extended surface area plate shell also utilizes the steam generated during boiling heat transfer to form array injection,
To the appearance of delayed boiling crisis significantly, significant enhanced boiling heat transfer and raising boiling heat transfer critical heat flux density, Jin Erxian
The safety and reliability for improving nuclear reactor pressure container is write, it is simple easily to realize.
In addition, the nuclear reactor pressure container of setting combined, extended surface area plate shell according to the above embodiment of the present invention
There can also be following additional technical characteristic：
Further, in an embodiment of the present invention, the extended surface area Shell Finite Element with a thickness of 1 to 10mm.
Further, in an embodiment of the present invention, the cylinder includes：Lower part heat dissipation enhancing Loadings On Hemispherical Shell；Lower part dissipates
Heat enhancing circular cylindrical shell；Upper body.
Further, in an embodiment of the present invention, the combined, extended surface area plate shell setting is dissipated in the lower part
On the outer surface of heat enhancing Loadings On Hemispherical Shell and lower part heat dissipation enhancing circular cylindrical shell and it is connected as one.
Further, in an embodiment of the present invention, the combined, extended surface area plate shell further includes：Combined, extended
Surface area ball plate shell, the combined, extended surface area ball plate shell setting are radiated on enhancing Loadings On Hemispherical Shell and are connected in the lower part
It is integrated；Combined, extended surface area column plate shell, the combined, extended surface area column plate shell setting is radiated in the lower part to be increased
On strong cylinder shell and it is connected as one.
Further, in an embodiment of the present invention, the combined, extended surface area ball plate shell includes closely spaced array cloth
Multiple extended surface area plate shell quadrilateral units, multiple extended surface area plate shell pentagon shaped cells and the multiple extended surface areas set
Plate shell hexagonal cells.
Further, in an embodiment of the present invention, the combined, extended surface area column plate shell includes closely spaced array cloth
The multiple extended surface area plate shell quadrilateral units set.
Further, in an embodiment of the present invention, the extended surface area plate shell hexagonal cells include secondary unit
Extended surface area plate shell triangular element and secondary unit extended surface area plate shell quadrilateral units.
Further, in an embodiment of the present invention, the connection orifice layer includes through hole and connection orifice plate layer entity.
Further, in an embodiment of the present invention, if the institute that the extended surface lamination is arranged for intensive parallel array
Micro- fin is stated, then the through hole is triangular arrangement.
Further, in an embodiment of the present invention, if the institute that the extended surface lamination is arranged for intensive crossbar array
Microtrabeculae is stated, then the through hole is quadrangle arrangement.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein：
Fig. 1 is that the structure of the nuclear reactor pressure container of the setting combined, extended surface area plate shell of the embodiment of the present invention is shown
It is intended to；
Fig. 2 is that the work of the nuclear reactor pressure container of the setting combined, extended surface area plate shell of the embodiment of the present invention is former
Manage schematic diagram；
Fig. 3 is the three of the outer surface arrangement combinations formula extended surface area plate shell of the middle and lower part Loadings On Hemispherical Shell of the embodiment of the present invention
Tie up local cutting structural schematic diagram；
Fig. 4 is the three-dimensional of the outer surface arrangement combinations formula extended surface area plate shell of the lower hemisphere shell of the embodiment of the present invention
Structural schematic diagram；
Fig. 5 is that the second level of the extended surface area plate shell hexagonal cells of the embodiment of the present invention combines three dimensional structure diagram；
Fig. 6 is the extended surface area Shell Finite Element three-dimensional local cutting structural schematic diagram of the embodiment of the present invention；
Fig. 7 is the partial cutaway section schematic diagram of the combined, extended surface area plate shell of the embodiment of the present invention；
Fig. 8 is the partial cutaway section schematic diagram of another combined, extended surface area plate shell of the embodiment of the present invention.
Description of symbols：
Nuclear reactor pressure container 10, cylinder 100, lower part the heat dissipation enhancing hemisphere of combined, extended surface area plate shell are set
Shell 110, lower part heat dissipation enhancing circular cylindrical shell 120, upper body 130, combined, extended surface area plate shell 200, multiple extensions
Surface area Shell Finite Element 210, connection orifice layer 211, extended surface lamination 212, micro- fin 213, microtrabeculae 214, through hole 215,
Connect orifice plate layer entity 216, combined, extended surface area ball plate shell 220, multiple extended surface area plate shell quadrilateral units 221,
The expansion of multiple extended surface area plate shell pentagon shaped cells 222, multiple extended surface area plate shell hexagonal cells 223, secondary unit
Open up surface area plate shell triangular element 224, the extended surface area plate shell quadrilateral units 225 of secondary unit, combined, extended table
Area column plate shell 230, reactor core fusant 300, heap chamber 400 and boiling steam bubble 500.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The core for describing the setting combined, extended surface area plate shell proposed according to embodiments of the present invention with reference to the accompanying drawings is anti-
Answer core pressure vessel.
Fig. 1 is that the structure of the nuclear reactor pressure container of the setting combined, extended surface area plate shell of the embodiment of the present invention is shown
It is intended to.As shown in Figure 1, the nuclear reactor pressure container 10 of the setting combined, extended surface area plate shell includes：Cylinder 100 and group
Box-like extended surface area plate shell 200.Accommodation space is equipped in cylinder 100.Combined, extended surface area plate shell 200 is arranged in cylinder
It on the outer surface of 100 lower part and is connected as one, and combined, extended surface area plate shell 200 is arranged in including closely spaced array
Multiple extended surface area Shell Finite Elements 210 on the outer surface of cylinder 100, wherein extended surface area Shell Finite Element 210 includes connecting
Orifice layer 211 and extended surface lamination 212 are connect, connection orifice layer 211 is the orifice layer of the array hole with penetrability, extended surface
Lamination 212 includes the micro- fin 213 or/and microtrabeculae 214 of closely spaced array arrangement, so that 10 lower area of nuclear reactor pressure container
Boiling heat transfer heat dissipation area extend one times or more.The nuclear reactor pressure container 10 of the embodiment of the present invention is by nuclear reactor
The combined, extended surface area plate shell of pressure vessel outer surface setting can significantly strengthen nuclear reactor pressure under major accident and hold
The boiling heat transfer of device outer surface is effectively reduced the wall superheat degree of pressure vessel, significantly improves the wetability of wall surface, to improve
Boiling heat transfer critical heat flux density significantly improves the safety and reliability of nuclear reactor pressure container, simple easily to realize.
It is understood that the combined, extended surface being arranged in the outer surface of 10 lower case of nuclear reactor pressure container
Product plate shell 200 includes multiple extended surface area Shell Finite Elements 210, convenient for manufacture and installation and maintenance.In nuclear reactor pressure
The outer surface setting of 10 lower case of container with nuclear reactor pressure container 10 outer surface and the combined, extended that is connected as one
Surface area plate shell 200 can not only dramatically increase boiling heat transfer area, improve the wetability of extended surface area plate shell and generate boiling
The heat exchange nucleus of boiling is risen, but also de- using the steam formation array injection generated during boiling heat transfer and violent steam bubble
From etc., so as to significant enhanced boiling heat transfer, it can especially significantly improve the CHF of boiling heat transfer.And the present invention is implemented
The heating conduction of the material of the extended surface area Shell Finite Element 210 of example is good, then is connected to 10 lower part of nuclear reactor pressure container
Extended surface area plate shell in housing outer surface, one of major function are similar on 10 outer surface of nuclear reactor pressure container
A kind of fin of special extended surface area is set, therefore the surface area of its extended surface area Shell Finite Element 210 exchanges heat to enhancing
It is also particularly significant with the CHF of raising boiling heat transfer.
Specifically, the company of extended surface area Shell Finite Element 210 and 10 lower case outer surface of nuclear reactor pressure container
It connects, can be welded connecting, including the methods of soldering, electric resistance welding, ultrasonic welding connection, or 3D printing connection may be used also
Think bonding.It connect to guarantee extended surface area Shell Finite Element 210 with 10 outer surface of nuclear reactor pressure container long-term
Reliability and reduction thermal contact resistance improve heat exchange property, and connection is particularly significant, and the embodiment of the present invention can use soldering connection
Or 3D printing connection, it is not specifically limited herein, and the embodiment of the present invention is illustrated for using soldering connection.Expand
Open up the material of surface area Shell Finite Element 210, metal material can be used, as non-ferrous metal (aluminium and aluminium alloy, copper and copper alloy,
Silver and alloy etc.), low-alloy steel and stainless steel (SA508-3 etc.), composite material (graphite-base composite material etc.) can also be used,
The embodiment of the present invention is by taking aluminium and aluminium alloy as an example.In the outer surface closely spaced array cloth of the cylinder of 10 lower part of nuclear reactor pressure container
The main purpose for setting extended surface area Shell Finite Element 210 strengthens 10 lower part of nuclear reactor pressure container under major accident
Boiling heat transfer improves its critical heat flux density.In the outer surface closely spaced array cloth of the cylinder of 10 lower part of nuclear reactor pressure container
Extended surface area Shell Finite Element 210 is set, boiling heat transfer critical heat flux density can be significantly improved, can be mentioned relative to smooth surface
About 1.5 times of high CHF, generally can be improved 1-3 times it is even higher, so as to significantly improve the safety of nuclear reactor.
The working principle of the container 10 to the embodiment of the present invention is elaborated below.
As shown in Fig. 2, nuclear reactor plant includes nuclear reactor pressure container 10.Under major accident, nuclear reaction stacking pressure
Boiling heat transfer cooling performance outside force container is one of the important indicator for influencing pressure vessel safety.When reactor occurs seriously
Reactor core melts when accident, and reactor core fusant 300 falls into lower part in reactor pressure vessel 10, at this time by non-energy such as gravity
Flowing mode injects cooling water into reactor cavity 400 and nuclear reactor pressure container 10 is flooded, thus to nuclear reaction stacking pressure
The outside wall surface of force container 10 carries out pool boiling heat exchange cooling.By the pressure vessel lower part for guaranteeing undertaking reactor core fusant 300
The heat flux of outer wall is no more than boiling heat transfer critical heat flux density, and 10 outside wall surface of reactor pressure vessel is changed by nucleate boiling
The mode of heat is adequately cooled, and then can guarantee the integrality of nuclear reactor pressure container 10, prevents nuclear fuel etc.
Leakage, guarantees the safety of nuclear power station.Therefore, the embodiment of the present invention expands in 10 outside wall surface of nuclear reactor pressure container setting combined type
Exhibition surface area plate shell 200 is simultaneously connected as one, and the nuclear reactor pressure container distributed area of combined, extended surface area plate shell is arranged
The exterior surface area in domain increases relative to the area that nuclear reactor pressure container is smooth outer surface up to one times or more, can be significant
The CHF for improving outer surface, to significantly improve nuclear plant safety.
Further, in an embodiment of the present invention, extended surface area Shell Finite Element with a thickness of 1 to 10mm.
Further, in an embodiment of the present invention, as shown in Figure 1, cylinder 100 includes：Lower part heat dissipation enhancing hemispherical Shell
Body 110, lower part heat dissipation enhancing circular cylindrical shell 120 and upper body 130.
Further, in an embodiment of the present invention, the setting of combined, extended surface area plate shell 200 is radiated in lower part and is enhanced
On the outer surface of Loadings On Hemispherical Shell 110 and lower part heat dissipation enhancing circular cylindrical shell 120 and it is connected as one.
Further, in an embodiment of the present invention, combined, extended surface area plate shell 200 further includes：Combined, extended
Surface area ball plate shell 220 and combined, extended surface area column plate shell 230.
Specifically, as shown in Figure 1 and Figure 4, the setting of combined, extended surface area ball plate shell 220 is radiated in lower part enhances hemisphere
On 110 outer surface of shell, wherein combined, extended surface area ball plate shell 220 includes multiple extended surfaces of closely spaced array arrangement
Product plate shell quadrilateral units 221, multiple extended surface area plate shell pentagon shaped cells 222 and multiple extended surface area plate shell hexagons
Unit 223.The embodiment of the present invention radiates in lower part enhances multiple expansion tables of closely spaced array arrangement on 110 outer surface of Loadings On Hemispherical Shell
Area plate shell quadrilateral units 221, multiple extended surface area plate shell pentagon shaped cells 222 and multiple six sides of extended surface area plate shell
Shape unit 223 arranges 5 extended surface area plate shell quadrilateral units, 221,6 extended surface area plate shells five for half outer surface of ball
Side shape unit 222 and 5 extended surface area plate shell hexagonal cells 223, but the cell configuration and quantity arranged are without being limited thereto.
Specifically, as shown in Figure 1, the setting of combined, extended surface area column plate shell 230 is radiated in lower part enhances circular cylindrical shell
On 120 outer surfaces, wherein combined, extended surface area column plate shell 230 includes multiple extended surface area plates of closely spaced array arrangement
Shell quadrilateral units 221.The present embodiment radiates in lower part enhances multiple expansions of closely spaced array arrangement on 120 outer surface of circular cylindrical shell
Surface area plate shell quadrilateral units 221 are opened up, for 2 rows totally 48 extended surface area plate shell quadrilateral units 221, but the unit arranged
Shape and quantity are without being limited thereto.
Specifically, as shown in figures 1 and 3, accommodation space is limited in cylinder 100, cylinder 100 includes that lower part heat dissipation increases
More than half global shell 110, lower part heat dissipation enhancing circular cylindrical shell 120 and upper body 130；Combined, extended surface area plate shell 200 is set
It sets on the lower part heat dissipation enhancing Loadings On Hemispherical Shell 110 of 100 lower part of cylinder and the outer surface of lower part heat dissipation enhancing circular cylindrical shell 120,
Combined, extended surface area plate shell 200, including being arranged on the lower part heat dissipation enhancing Loadings On Hemispherical Shell 110 of 100 lower part of cylinder
Combined, extended surface area ball plate shell 220, combined, extended surface area ball plate shell 220 are the outer surface of ball plate and shell structure and 120
On combined, extended surface area column plate shell 230, combined, extended surface area column plate shell 230 be column plate and shell structure.
As shown in figure 4, combined, extended surface area plate shell 200 includes multiple extended surface area Shell Finite Elements 210, specifically
Ground, the present embodiment are arranged in the combined, extended surface area ball plate shell 220 of lower part heat dissipation enhancing 110 outer surface of Loadings On Hemispherical Shell, packet
Include multiple extended surface area plate shell quadrilateral units 221,222 and of extended surface area plate shell pentagon shaped cells of closely spaced array arrangement
Extended surface area plate shell hexagonal cells 223；As shown in Figure 1, being arranged in the group of lower part heat dissipation enhancing 120 outer surface of circular cylindrical shell
Box-like extended surface area column plate shell 230, multiple extended surface area plate shell quadrilateral units 221 including closely spaced array arrangement.
Further, in an embodiment of the present invention, multiple extended surface area plate shell hexagonal cells 223 include second level list
The extended surface area plate shell triangular element 224 of member and the extended surface area plate shell quadrilateral units 225 of secondary unit.
It is understood that the diameter due to nuclear reactor pressure container is bigger, enhance in radiating in lower part for setting
The extended surface area plate shell quadrilateral units 221 of 110 outer surface of Loadings On Hemispherical Shell, 222 and of extended surface area plate shell pentagon shaped cells
Extended surface area plate shell hexagonal cells 223 can also be separated into the secondary unit of smaller size, extended surface as shown in Figure 5
Product plate shell hexagonal cells 223 can also be separated into the extended surface area plate shell triangular element of the secondary unit of smaller size
224 and extended surface area plate shell quadrilateral units 225, those skilled in the art can select according to the actual situation, herein
It is not specifically limited.
Further, in an embodiment of the present invention, connection orifice layer 211 includes that through hole 215 and connection orifice layer are real
Body 216.
It is understood that as shown in Figure 6 and Figure 7, extended surface area Shell Finite Element 210 includes connection 211 He of orifice layer
Extended surface lamination 212, wherein connection orifice layer 211 is the plate shell with through hole, including through hole 215 and connection orifice layer
Entity 216, connection orifice layer 211 are the extended surface area microstructure brazings for arranging closely spaced array in extended surface lamination 212
It is integrated, while the inner surface for connecting orifice layer 211 is connected in the outer surface of 100 lower part of cylinder (such as Fig. 3 and Fig. 7 institute
Show)；Extended surface lamination 212 be can obvious extended surface area and the grade micro-surface structure that is arranged, including closely spaced array arrangement
Multiple micro- fins 213.Specifically, the closely spaced array of the lateral surface and extended surface lamination 220 that connect orifice layer 211 is arranged more
A micro- fin 221 is connected as one, connect orifice layer 210 medial surface and 100 lower part of cylinder heat dissipation enhancing Loadings On Hemispherical Shell 110 or
The outer surface connection of lower part heat dissipation enhancing circular cylindrical shell 120.
Specifically, penetrating bore dia is as shown in fig. 7, the structural parameters of connection orifice layer 211 are H1=2mm
2.6mm, through hole are triangular arrangement；The structural parameters of extended surface lamination 212 are H2=2mm, fin pitch 1.5mm, micro-
Fin average thickness 0.8mm；Extended surface area Shell Finite Element with a thickness of 4mm, the generally thickness of extended surface area Shell Finite Element
Degree is 1-10mm.The area increment rate of the embodiment of the present invention (is smooth surface relative to 10 outer surface of nuclear reactor pressure container
Surface area increment rate) be about 2 times.Generally, the container 10 of the embodiment of the present invention and nuclear reactor pressure container outer surface
It is compared for smooth surface, boiling heat transfer area increases up to one times or more.
For example, when major accident occurs, the outer surface of nuclear reactor pressure container 10 is immersed in cooling water, cold
But water also submerges the micro- fin 213 and through hole 215 of extended surface area Shell Finite Element 210, due to nuclear reactor pressure container 10
High-temperature molten make submerge nuclear reactor pressure container 10 outer surface extended surface area Shell Finite Element 210 micro- fin
Cooling water between 213 and in through hole 215 is heated to boiling and generates steam, and the steam of generation takes away fission in nuclear reactor
Heat, if the heat flow density in 10 outer surface of nuclear reactor pressure container and extended surface area Shell Finite Element 210 be not up to it is critical
Heat flow density, nuclear reactor pressure container 10 can keep integrality, so as to avoid 10 quilt of nuclear reactor pressure container
The even more serious accident such as high-temperature molten burn through occurs.
Further, in an embodiment of the present invention, if extended surface lamination 212 is micro- wing of intensive parallel array arrangement
Piece 213, through hole are triangular array arrangement.Through hole may be quadrangular array arrangement.
It is understood that connection orifice layer 211 and extended surface lamination that extended surface area Shell Finite Element 210 includes
212, through hole 215 of the orifice layer 211 with multiple arrays is connected, extended surface lamination 212 is the more of parallel array arrangement
Micro- fin 213 of a bar shaped, the medial surface for connecting the lateral surface and extended surface lamination 212 of orifice layer 211 are connected as one,
213 bottom of micro- fin exactly with multiple bar shapeds of parallel array arrangement is connected as one.Connect the through hole of orifice layer 211
215 is penetrability, are on the one hand to increase the nucleus of boiling of boiling heat transfer and a small amount of heat exchange extended surface area, and in addition one
Aspect is connect also for convenient for extended surface area Shell Finite Element 210 with 100 outer surface of cylinder, such as when using being welded to connect not
It is easy to produce air interlayer, is welded to connect more closely and reliably.
Further, along the axial direction of cylinder 100, cylinder 100 limits upper body 130 from top to bottom, lower part dissipates
Heat enhancing circular cylindrical shell 120 and lower part heat dissipation enhancing Loadings On Hemispherical Shell 110, wherein combined, extended surface area plate shell 200 is arranged in
The outer surface of lower part heat dissipation enhancing circular cylindrical shell 120 and lower part heat dissipation enhancing Loadings On Hemispherical Shell 110.As shown in Fig. 2, when major accident
It may cause core meltdown, fusant 300 falls under gravity into the bottom in nuclear reactor pressure container 10, according to this hair
Bright embodiment, will be in the lower part of the cylinder 100 of nuclear reactor pressure container 10 setting combined, extended surface area plate shell 200
It highly, is the liquid level not less than fusant 300 in pressure vessel 10, the heat of fusant 300 passes through heat dissipation enhancement region
The outer surface in domain is transmitted, and is set on lower part heat dissipation enhancing circular cylindrical shell 120 and lower part heat dissipation enhancing 110 outer surface of Loadings On Hemispherical Shell
The combined, extended surface area plate shell 200 set can significantly increase boiling heat transfer, and improve the ability of its passive cooling to
Improve the safety of nuclear power station.As a result, as shown in Figure 1, combined type is arranged in the lower part of the cylinder 100 of nuclear reactor pressure container 10
The heat dissipation of extended surface area plate shell 200 enhances region, can be for including at least the lower part of cylinder body bottom heat dissipation enhancing Loadings On Hemispherical Shell
110, for example, the lower part heat dissipation enhancing Loadings On Hemispherical Shell 110 and lower part heat dissipation enhancing circular cylindrical shell of cylinder body bottom can be included at least
120.Fusant is fallen under gravity into the bottom head of pressure vessel as a result, in lower part heat dissipation enhancement region outer surface
Combined, extended surface area plate shell is set, nuclear reactor pressure container changing in the cooling of major accident lower outer portion can be significantly improved
Hot property, so as to significantly improve the safety of nuclear reactor pressure container.
Multiple extended surface area Shell Finite Elements 210 of the lower part heat dissipation enhancing Loadings On Hemispherical Shell 110 of cylinder 100 are set, are
The close theoretically consistent spherical plate shell of curvature of fitting, should be fabricated to spherical plate shell by the curvature of Loadings On Hemispherical Shell, then with
Lower part heat dissipation enhancing Loadings On Hemispherical Shell 110 assembling (as welded) of cylinder 100 is integrated.Similarly, the lower part that cylinder 100 is arranged in dissipates
Multiple extended surface area plate shell quadrilateral units of multiple extended surface area Shell Finite Elements 210 of heat enhancing circular cylindrical shell 120
221, in order to which good fit is theoretically cylinder panel shell, multiple expansions of cylinder panel shell should be fabricated to by the curvature of circular cylindrical shell
Open up surface area plate shell quadrilateral units 221, enhancing circular cylindrical shell 120 assembling of then radiating with the lower part of cylinder 100 (as welded)
It is integrated.Since extended surface area Shell Finite Element 210 is thin-walled plate and shell structure, there is certain elasticity and flexibility, combine simultaneously
Formula extended surface area plate shell 200 is that multiple extended surface area Shell Finite Elements 210 splice and combine, therefore, extended surface area plate shell list
Member 210 may exist certain error of curvature during fabrication, this brings convenience to manufacture and assembling.
Above-mentioned is the first specific embodiment of the invention, will be explained in detail the second specific embodiment of the invention below
It states.
Further, in an embodiment of the present invention, if extended surface lamination 212 is the microtrabeculae of intensive crossbar array arrangement
214, through hole 215 is quadrangular array arrangement.Through hole 215 or triangular array arrangement.
Specifically, shell 100 and the combined, extended surface that 100 lower external face of shell is arranged in and is connected as one
Product plate shell 200, combined, extended surface area plate shell 200 include multiple extended surface area Shell Finite Elements 210, extended surface area plate shell
The partial cutaway section schematic diagram of unit 210 is as shown in Figure 8.
The main distinction of second specific embodiment and first specific embodiment of the invention is, in embodiment one
The extended surface lamination 212 of extended surface area Shell Finite Element 210 is micro- fin 213 of intensive parallel array, and in embodiment two
Extended surface area Shell Finite Element 210 extended surface lamination 212 be intensive crossbar array microtrabeculae 214.Secondly, embodiment one
In the through hole 215 of connection orifice layer 211 of extended surface area Shell Finite Element 210 be triangular arrangement, and in embodiment two
Extended surface area Shell Finite Element 210 connection orifice layer 211 through hole 215 be quadrangle arrange.
The main structure parameters of embodiment two are：H1=2mm, through hole are taper hole, average diameter 1.6mm；Expansion table
The structural parameters of area layer 220 are H2=3mm, crossbar array pitch 2mm, the average diameter 1.5mm of microtrabeculae 222；Extended surface
Product Shell Finite Element with a thickness of 5mm, generally extended surface area Shell Finite Element with a thickness of 1-10mm.The area of the present embodiment two
Increment rate (being the surface area increment rate of smooth surface relative to 10 outer surface of nuclear reactor pressure container) is about 3 times.Generally,
The nuclear reactor pressure container of a kind of setting combined, extended surface area plate shell of the invention, outside nuclear reactor pressure container 10
Surface is compared for smooth surface, and boiling heat transfer area increases up to one times or more.
Extended surface area Shell Finite Element is arranged in the outer surface closely spaced array of the shell of 10 lower part of nuclear reactor pressure container
210 main purpose is the boiling heat transfer for strengthening 10 lower part of nuclear reactor pressure container under major accident, improves its boiling and changes
The CHF of heat.The present embodiment two arranges extended surface in the outer surface closely spaced array of the shell of 10 lower part of nuclear reactor pressure container
Product Shell Finite Element 210, can significantly improve boiling heat transfer critical density, can be improved about 2 times of CHF relative to smooth surface,
Generally can be improved 1-3 times it is even higher, so as to significantly improve the safety of nuclear reactor.
To sum up, the nuclear reactor pressure container 10 of the embodiment of the present invention at least has one of following advantages：
(1) combined, extended surface area plate shell is set in the outer surface of large-scale nuclear reactor pressure container lower case, it can
To dramatically increase boiling heat transfer area and form a large amount of nucleus of boiling, wall superheat degree and enhanced boiling heat transfer is effectively reduced；
(2) in the outer surface of large-scale nuclear reactor pressure container cylinder, setting combined, extended surface area plate shell is also available
Capillary force sucks cooling water, constantly wetting Boiling Heat Transfer Surfaces, significantly improves wetability, and combined, extended surface area plate shell
Array is formed using the steam generated during boiling heat transfer to spray, and postpones the appearance of critical crisis significantly, it is significant to strengthen boiling
Heat exchange and improve critical heat flux density, generally can be improved 1-3 times it is even higher, so as to significantly improve nuclear reactor pressure
The security reliability of container.
(3) in the pressure of the outer surface of large-scale nuclear reactor pressure container lower case setting combined, extended surface area plate shell
The combined, extended surface area plate shell of force container, setting does not influence the intensity of nuclear reactor pressure container, is convenient for combined type
The in-site installation and maintenance and repair of extended surface area plate shell, good reliability, so as to significantly improve nuclear reactor pressure container
Safety and reliability.
The nuclear reactor pressure container of the setting combined, extended surface area plate shell proposed according to embodiments of the present invention, passes through
In the combined, extended surface area plate shell of nuclear reactor pressure container outer surface setting, the core under major accident can be dramatically increased
Boiling heat transfer area outside reactor pressure vessel simultaneously forms a large amount of nucleus of boiling, and the wall superheat of pressure vessel is effectively reduced
Degree；Meanwhile combined, extended surface area plate shell sucks cooling water using capillary force, constantly soaks Boiling Heat Transfer Surfaces, significantly mentions
High wettability, and combined, extended surface area plate shell also utilizes the steam generated during boiling heat transfer to form array injection,
To the appearance of delayed boiling crisis significantly, significant enhanced boiling heat transfer and raising CHF, and then significantly improve the peace of pressure vessel
Full property and reliability are simple easily to realize.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of nuclear reactor pressure container that combined, extended surface area plate shell is arranged, which is characterized in that including：
Cylinder, the cylinder is interior to be equipped with accommodation space；
The outer surface of the lower part of the cylinder is arranged in combined, extended surface area plate shell, the combined, extended surface area plate shell
It goes up and is connected as one, and the combined, extended surface area plate shell includes the outer surface that closely spaced array is arranged in the cylinder
On multiple extended surface area Shell Finite Elements, wherein the extended surface area Shell Finite Element includes connection orifice layer and expansion table
Area layer, the connection orifice layer are the orifice layer of the array hole with penetrability, and the extended surface lamination includes closely spaced array
The micro- fin or/and microtrabeculae of arrangement, so that the boiling heat transfer heat dissipation area of nuclear reactor pressure container outer surface lower area expands
One times of exhibition or more.
2. the nuclear reactor pressure container of setting combined, extended surface area plate shell according to claim 1, feature exist
In, the extended surface area Shell Finite Element with a thickness of 1 to 10mm.
3. the nuclear reactor pressure container of setting combined, extended surface area plate shell according to claim 1, feature exist
In the cylinder includes：
Lower part heat dissipation enhancing Loadings On Hemispherical Shell；
Lower part heat dissipation enhancing circular cylindrical shell；
Upper body.
4. according to claim 1 with the nuclear reactor pressure container of setting combined, extended surface area plate shell described in 3, feature
It is, the combined, extended surface area plate shell setting is radiated in the lower part enhances Loadings On Hemispherical Shell and lower part heat dissipation enhancing
On the outer surface of circular cylindrical shell and it is connected as one.
5. the nuclear reactor pressure container of setting combined, extended surface area plate shell according to claim 4, feature exist
In the combined, extended surface area plate shell further includes：
Combined, extended surface area ball plate shell, the combined, extended surface area ball plate shell setting is in lower part heat dissipation enhancing half
On global shell and it is connected as one；
Combined, extended surface area column plate shell, the combined, extended surface area column plate shell setting radiate in the lower part and enhance circle
On cylinder shell and it is connected as one.
6. according to claim 1 with the nuclear reactor pressure container of setting combined, extended surface area plate shell described in 5, feature
It is, the combined, extended surface area ball plate shell includes multiple extended surface area plate shell quadrangle lists of closely spaced array arrangement
First, multiple extended surface area plate shell pentagon shaped cells and multiple extended surface area plate shell hexagonal cells.
7. according to claim 1 with the nuclear reactor pressure container of setting combined, extended surface area plate shell described in 5, feature
It is, the combined, extended surface area column plate shell includes multiple extended surface area plate shell quadrangle lists of closely spaced array arrangement
Member.
8. the nuclear reactor pressure container of setting combined, extended surface area plate shell according to claim 1, feature exist
In the connection orifice layer includes through hole and connection orifice plate layer entity.
9. according to claim 1 with the nuclear reactor pressure container of setting combined, extended surface area plate shell described in 8, feature
It is, if the extended surface lamination is micro- fin of intensive parallel array arrangement.
10. the nuclear reactor pressure container of setting combined, extended surface area plate shell according to claim 9, feature exist
In if the extended surface lamination is the microtrabeculae of intensive crossbar array arrangement.
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| CN201810674610.8A CN108831572B (en) | 2018-06-27 | 2018-06-27 | Nuclear reactor pressure vessel with combined extended surface area plate shell |
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| CN201810674610.8A CN108831572B (en) | 2018-06-27 | 2018-06-27 | Nuclear reactor pressure vessel with combined extended surface area plate shell |
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| CN108831572B CN108831572B (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115062522A (en) * | 2022-08-18 | 2022-09-16 | 天河超级计算淮海分中心 | Strength determination method based on fabricated structure, electronic device and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339340A (en) * | 1993-07-16 | 1994-08-16 | General Electric Company | Liquid metal reactor air cooling baffle |
| CN102969033A (en) * | 2012-10-25 | 2013-03-13 | 清华大学 | Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component |
| CN104810066A (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 |
| CN204740866U (en) * | 2015-06-11 | 2015-11-04 | 清华大学 | Nuclear reactor pressure vessel of bellying is arranged to surface |
| CN106057257A (en) * | 2016-07-26 | 2016-10-26 | 中广核研究院有限公司 | Nuclear power plant containment cooling system |
-
2018
- 2018-06-27 CN CN201810674610.8A patent/CN108831572B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339340A (en) * | 1993-07-16 | 1994-08-16 | General Electric Company | Liquid metal reactor air cooling baffle |
| CN102969033A (en) * | 2012-10-25 | 2013-03-13 | 清华大学 | Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component |
| CN104810066A (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 |
| CN204740866U (en) * | 2015-06-11 | 2015-11-04 | 清华大学 | Nuclear reactor pressure vessel of bellying is arranged to surface |
| CN104979021A (en) * | 2015-06-30 | 2015-10-14 | 浙江工业大学 | Novel nuclear reactor pressure vessel lower head structure |
| CN106057257A (en) * | 2016-07-26 | 2016-10-26 | 中广核研究院有限公司 | Nuclear power plant containment cooling system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115062522A (en) * | 2022-08-18 | 2022-09-16 | 天河超级计算淮海分中心 | Strength determination method based on fabricated structure, electronic device and storage medium |
| CN115062522B (en) * | 2022-08-18 | 2022-11-04 | 天河超级计算淮海分中心 | Strength determination method based on fabricated structure, electronic device and storage medium |
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| CN108831572B (en) | 2020-10-27 |
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