CN106251915A - The reactor core fused mass catcher that a kind of pressure is sprawled - Google Patents
The reactor core fused mass catcher that a kind of pressure is sprawled Download PDFInfo
- Publication number
- CN106251915A CN106251915A CN201610674347.3A CN201610674347A CN106251915A CN 106251915 A CN106251915 A CN 106251915A CN 201610674347 A CN201610674347 A CN 201610674347A CN 106251915 A CN106251915 A CN 106251915A
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- China
- Prior art keywords
- catcher
- fused mass
- base plate
- cover plate
- reactor core
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/016—Core catchers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- 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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- Physics & Mathematics (AREA)
- 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 belongs to nuclear reactor safety technical field, be specifically related to the reactor core fused mass catcher that a kind of pressure is sprawled.Including the fused mass propagation chamber by transfer of melt passage coupled reaction heap reactor pit, it is characterized in that: the inner bottom surface in described fused mass propagation chamber is provided with carrying the catcher base plate of the fused mass of described transfer of melt passage conveying, it is arranged on the catcher cover plate with catcher cover plate steam vent above described catcher base plate, described catcher base plate, catcher cover plate are connected by several cover plate whereabouts directional supports, and described catcher cover plate can cover on described catcher base plate.Reactor core fused mass is sprawled uneven by existing fused mass catcher, fused mass heat cannot be realized and lead maximization, reactor core fused mass catcher provided by the present invention, fused mass is made to sprawl uniformly, increase heat exchange area, be conducive to improving fused mass decay heat and derive power, it is to avoid the protective barrier that hot-spot causes lost efficacy.
Description
Technical field
The invention belongs to nuclear reactor safety technical field, be specifically related to the reactor core fused mass trapping that a kind of pressure is sprawled
Device.
Background technology
After the major accident of Three Mile Island and Chernobyl Plant, nuclear power circle starts to concentrate strength on major accident
Prevention and consequence alleviate study and tackle key problems, many conclusions specify that strick precaution with alleviation major accident, improve safe and reliable
Property and improve the requirement of the aspects such as Human Engineering.When pressurized-water reactor nuclear power plant generation major accident, residual heat of nuclear core discharges means
Losing and coolant evaporation will be made to exhaust, Core uncovering is the most persistently overheating, and fuel element melts, reactor core owing to losing cooling
Fused mass falls into pressure vessel (RPV) lower chambers, then build-up of pressure container Lower head failure, if can not adopt an effective measure
Cooling down it, reactor core fused mass is likely by pressure vessel burn through.After pressure vessel burn through, fused mass is directly injected to containment
With structural concrete interaction (MCCI), the certain time interior raft corroding containment with speed faster gradually downward on raft foundation
Base, if raft foundation thickness is not enough, then base plate may be fused, and causes the integrity violations of containment, and radioactive substance will subsequently
It is directly entered soil, environment is caused to be had a strong impact on.The extensive radioactive substance release caused in order to avoid reactor core fused mass,
The relevant design of reactor core catcher gradually produces.Currently under major accident, the cooling of reactor core fused mass and collection strategy master
Want to be divided into two kinds: the cooling of fused mass and holding (IVR) in pressure vessel, use in the AP1000 type of the U.S. designs；
Pressure vessel outer fused mass cooling and collection (EVR), use in the EPR type of Muscovite WWER1000 type and France.
WWER1000 type uses " crucible " formula reactor core catcher, and it is in an independent structure of container of pressure vessel bottom,
Mainly it is made up of lower shoe, expendable material and fan-shaped heat exchanger.EPR type uses " sprawling " formula reactor core catcher, serious thing
In the case of therefore, reactor core forms flowable liquid molten thing, flows directly in reactor pit, fused mass and heap under high temperature action
Hole sacrificial concrete reacts, and gradually melts sacrificial concrete, reaches tentatively to cool down, collect the function of fused mass.
About the research of reactor core catcher, relatively early, Patents is more, such as in external starting: masschusetts, U.S.A Polytechnics in
The patent of 1978, Core catcher for nuclear reactor core meltdown containment
(US4113560), this patent can be considered the design blank of EVR；International Atomic Energy Agency of France is in the patent of 1981, Core
Catcher device (US4280872), EVR skill upgrading has been arrived the level of engineer applied by this patent；The patent of nineteen eighty-two,
Molten core catcher and containment heat removal system (US4342621) proposes heat pipe
Technology is used for EVR；The patent of USDOE's nineteen eighty-three, Combination pipe rupture mitigator and in-
Vessel core catcher (US4412969), proposes the concept of IVR first；In addition Patents also has
Retrofittable nuclear reactor core catcher(US4442065)、Nuclear reactor
equipped with a core catcher(US5263066)、Nuclear reactor installation with a
core catcher device and method for exterior cooling of the latter by natural
circulation(US 5343506)、Core catcher cooling by heat pipe(US6353651)、Core
Catcher Cooling (US7558360), Core catcher, manufacturing method thereof, reactor
Containment vessel and manufacturing method thereof (US8358732) etc..Reactor core is caught by China
The research of storage gradually increases after introducing WWER nuclear power system from Russia, after introducing U.S.'s AP1000 nuclear power technology
Define a series of patent, such as: Russia's patent in China's application in 2007, the lining location of the LWR nuclear reactor of damage
With cooling system (CN200410031091.1), this patent is the EVR scheme of WWER；Middle nuclear industry 23 builds limited public affairs
Take charge of the patented technology formed in WWER work progress for 2010, the installation method of a kind of reactor core catcher of nuclear power station
(CN201010529073.1)；Korea Hydro & Nuclear Power Co's patent of 2010, has the reactor core of integrated cooling duct
Catcher (CN201080068588.4), its purport is to cover fused mass the cooling of base plate；Shanghai nuclear engineering research design
The EVR technology that institute gradually forms in AP1000 import, digestion and absorption and CAP1400 design process, bottom water injection superposition is outside cold
But large-scale passive nuclear plant reactor core catcher (CN201310005308.0), a kind of large-scale passive PWR nuclear power plant earthenware
Crucible type reactor core breaks storage (CN201310005342.8), has the large-scale passive PWR nuclear power plant reactor core of fused mass propagation chamber to catch
Storage (CN201310005579.6), large-scale passive nuclear plant fused mass heap are interior and out-pile is detained the device combined
(CN201310264749.2), there is the large-scale passive PWR nuclear power plant reactor core catcher of fused mass propagation chamber
(CN201320007203.4), a kind of large-scale passive PWR nuclear power plant may exhaust type reactor core catcher
(CN201320007218.0), large-scale passive nuclear plant fused mass heap is interior and out-pile is detained the device combined
(CN201320007347.X), the large-scale passive nuclear plant reactor core catcher of the outside cooling of bottom water injection superposition
(CN201320007522)。
Above-mentioned all reactor core catcher Patents are not all considered as the abundant exhibition forcing means of sprawling to realize fused mass
Open, maximize so that fused mass heat is derived.
Summary of the invention
For the deficiency existing for currently used reactor core fused mass catcher, and fused mass cools aspect
Problem, it is necessary to design a kind of fused mass catcher possessing and forcing to sprawl function, it is possible to relatively reliable sprawls fused mass, makes
It is sufficiently spread out, and increases the heat exchange area of fused mass, improves fused mass rate of heat exchange, preferably lowers the temperature fused mass cold
But.
For reaching object above, the technical solution used in the present invention is the reactor core catcher that fused mass is sprawled in a kind of pressure,
Including the fused mass propagation chamber by transfer of melt passage coupled reaction heap reactor pit, wherein, in described fused mass propagation chamber
Inner bottom surface is provided with carrying the catcher base plate of the fused mass of described transfer of melt passage conveying, be arranged on described in catch
The catcher cover plate with catcher cover plate steam vent above storage base plate, described catcher base plate, catcher cover plate pass through
Several cover plate whereabouts directional supports connect, and described catcher cover plate can cover on described catcher base plate.
Further, described catcher sole periphery edge is provided with catcher base plate profile convex edge, and inner panel face is arranged
There are some catcher base plate projections and catcher base plate depression；Described catcher cover plate periphery sides is along being provided with catcher cover plate wheel
Wide convex edge, inner panel face is provided with some catcher cover plate projections and catcher cover plate depression, described catcher base plate profile
Convex edge, catcher cover plate profile convex edge can compact siro spinning technology, described catcher base plate depression can accommodate described catcher cover plate
Projection, described catcher cover plate depression can accommodate described catcher base plate projection；When described catcher cover plate covers described
Time on catcher base plate, the fused mass of both Inner Constitution one Guan Bi sprawls space.
Further, described catcher cover plate is additionally provided with some terminal-velocity antivibrators, is used for controlling described catcher cover plate
The speed fallen along described cover plate whereabouts directional support.
Further, described catcher base plate, catcher cover plate, cover plate whereabouts directional support all use resistant to elevated temperatures gold
Genus, alloy, nonmetal or composite manufacture, contact or the surface of close fused mass or top layer, all use tungstenio high density to close
Gold or composite silicon carbide ceramic material.
Further, the cover plate release triggering described catcher cover plate being additionally provided with control described catcher cover plate whereabouts is opened
Close, the catcher base plate depression of described catcher base plate is provided with the release of some connections described cover plate and triggers the base plate temperature of switch
Degree sensor.
Further, it is additionally provided with the base plate coolant circulation passage of the closed circulation running through described fused mass propagation chamber, institute
That states that base plate coolant circulation passage is positioned at described fused mass propagation chamber partially passes through described catcher base plate interior, the described end
It is cold that the part that plate coolant circulation passage is positioned at outside described fused mass propagation chamber is disposed with base plate cooling circulating water pump, base plate
But circulating air cooling device and base plate cooling recycle heat exchanger, coolant can follow at described base plate coolant circulation passage inner sealing
Circulation moves.
Further, described fused mass propagation chamber is additionally provided with fused mass propagation chamber waterflood-transmission line and fused mass propagation chamber leads to
Wind passage.
Further, being provided with the reactor pit expendable material of metal simple-substance in described reactor pit, described transfer of melt is led to
Road is provided with the end, hole fusing plug with the junction of described reactor pit.
Further, the release of described cover plate triggers the alarm signal quilt that switch can send according to described baseplate temp sensor
Trigger, it is also possible to manually or Remote manually triggers.
The beneficial effects of the present invention is:
1. force to sprawl the heat exchange area that will increase between fused mass and cooling water, be conducive to improving fused mass decay thermal conductance
Go out power, it is to avoid the protective barrier that hot-spot causes lost efficacy.
2. the fused mass and after the reactor pit expendable material fusion of metal simple-substance is stagnant between catcher base plate and catcher cover plate
After staying and cooling down, will form relatively independent metal burden body, the accident post processing of reactor works greatly simplified, and work people
The irradiation dose of member can significantly reduce.
3. using metal simple-substance fused mass total amount can be made to substantially reduce as expendable material, the construction making reactor core catcher is difficult
Degree reduces, and engineering flexibility improves.
The most active combination is passive, the fused mass type of cooling of air cooling cooperation water-cooled is the most reliable, after making major accident
The long-term safety of nuclear power plant is promoted.
Accompanying drawing explanation
Fig. 1 is the structural representation of the reactor core catcher that fused mass is sprawled in a kind of pressure described in the specific embodiment of the invention
Figure；
Fig. 2 is the schematic diagram after catcher base plate described in the specific embodiment of the invention, catcher cover plate closing；
Fig. 3 is catcher base plate described in the specific embodiment of the invention, catcher cover plate, cover plate whereabouts directional support
Structural representation；
Fig. 4 is the catcher base arrangement schematic diagram of embodiment one described in the specific embodiment of the invention；
Fig. 5 is the catcher covering plate structure schematic diagram of embodiment two described in the specific embodiment of the invention；
Fig. 6 is the catcher base arrangement schematic diagram of embodiment two described in the specific embodiment of the invention；
Fig. 7 is the catcher cover plate knot being provided with described catcher cover plate large area projection in the specific embodiment of the invention
Structure schematic diagram；
In figure: 1-reactor pressure vessel, 2-reactor pit, 3-fused mass, 4-reactor pit expendable material, the end fusing of 5-hole
Plug, 6-transfer of melt passage, 7-fused mass propagation chamber, 8-catcher base plate, 9-catcher cover plate, 10-baseplate temp senses
Device, the release of 11-cover plate triggers switch, 12-cover plate whereabouts directional support, and 13-cools down water, 14-fused mass propagation chamber vent passages,
15-terminal-velocity antivibrator, 16-base plate coolant circulation passage, 17-base plate cooling circulating water pump, 18-base plate cooling circulating air cooling
Device, 19-base plate cooling recycle heat exchanger, 20-fused mass propagation chamber waterflood-transmission line, 80-catcher base plate profile convex edge, 81-
Catcher base plate projection, 82-catcher base plate caves in, 90-catcher cover plate profile convex edge, and the little area of 91-catcher cover plate is dashed forward
Rising, 92-catcher cover plate caves in, 93-catcher cover plate large area projection, 94-catcher cover plate steam vent.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the reactor core catcher that fused mass is sprawled in a kind of pressure that the present invention provides includes: turned by fused mass
The fused mass propagation chamber 7 of Mobile Communication road 6 coupled reaction heap reactor pit 2, wherein the inner bottom surface in fused mass propagation chamber 7 is provided with
The catcher base plate 8 of fused mass of carrying transfer of melt passage 6 conveying, be arranged on above catcher base plate 8 with trapping
The catcher cover plate 9 of device cover plate steam vent 94, catcher base plate 8, catcher cover plate 9 are by several cover plate whereabouts directional supports
12 connect, and catcher cover plate 9 can cover on described catcher base plate 8 (under catcher base plate 8, catcher cover plate 9 and cover plate
The annexation of directional support 12 of falling is shown in Fig. 3).It is additionally provided with several terminal-velocity antivibrators 15 on catcher cover plate 9, is used for controlling
The speed that catcher cover plate 9 falls along cover plate whereabouts directional support 12.In reactor pit 2, (bottom reactor pit) is provided with metal list
The reactor pit expendable material 4 of matter, transfer of melt passage 6 is provided with the end, hole fusing plug 5 with the junction of reactor pit 2.Melted
After thing fully merges with reactor pit expendable material 4 in reactor pit 2, then melt wear hole the end fusing plug 5, can turn through fused mass
Mobile Communication road 6 enters in fused mass propagation chamber 7.
As shown in Figure 2,3, 4, in order to preferably sprawl fused mass so that fused mass obtains the area of dissipation of maximum, trapping
The inside of device base plate 8 and catcher cover plate 9 be provided with projection in correspondence with each other and depression (in the present embodiment, these protruding and
Depression all uses array way uniformly to arrange), catcher base plate 8 periphery sides is along being provided with catcher base plate profile convex edge 80, interior
Some catcher base plate projections 81 and catcher base plate depression 82 it is provided with on plate face, portion；Catcher cover plate 9 periphery sides is along arranging
There is catcher cover plate profile convex edge 90, inner panel face is provided with some catcher cover plate projections 91 and catcher cover plate depression
92, when catcher cover plate 9 falls and covers on catcher base plate 8, catcher base plate profile convex edge 80, catcher cover plate profile
Convex edge 90 can compact siro spinning technology, catcher base plate depression 82 can accommodate catcher cover plate projection 91, catcher cover plate depression 92
Catcher base plate projection 81 can be accommodated；When catcher cover plate 9 covers on catcher base plate 8, both Inner Constitution one
The unified fused mass of Guan Bi sprawls space, is only communicated with fused mass propagation chamber 7 by catcher cover plate steam vent 94.Catcher
After cover plate 9 and catcher base plate 8 Guan Bi, there is gap between each depression and projection that both are internal, fused mass can be squeezed
Pressure is by these gaps, it is achieved force to sprawl, increase the effect of the heat exchange area of fused mass.
The shape of catcher base plate 8 and catcher cover plate 9 can determine according to practical situation, and the present invention provides two kinds of sides
Case, embodiment one is rectangular arrangement (see Fig. 2, Fig. 4), and embodiment two is circular pattern (see Fig. 5, Fig. 6).Cover plate therein falls
Directional support 12 quantity and distribution mode are planned also according to being actually needed, it is ensured that catcher cover plate 9 cover plate can firmly be pacified
Dress steady fall (quantity of the cover plate whereabouts directional support 12 in accompanying drawing and distribution are only signal).Additionally, catcher cover plate 9
On the area of catcher cover plate projection 91 can be different, such as piling up more mid portion at prediction fused mass can use
Catcher cover plate large area projection 93 (see Fig. 7) of larger area, now relative to the catcher base plate of position on catcher base plate 8
Depression 82 need not be mated with catcher cover plate large area projection 93, completely as long as catcher cover plate large area projection 93 can be coordinated
Complete the pressure of fused mass is sprawled.
Catcher base plate 8, catcher cover plate 9, cover plate whereabouts directional support 12 all use resistant to elevated temperatures metal, alloy, non-
Metal or composite manufacture, wherein need contact or near the surface of fused mass or top layer, all use tungsten Penetrator
Or composite silicon carbide ceramic material.
It is additionally provided with on catcher cover plate 9 and controls the cover plate release triggering switch 11 that catcher cover plate 9 falls, at the bottom of catcher
The catcher base plate depression 82 of plate 8 is provided with the release of some connection cover plates and triggers the baseplate temp sensor 10 of switch 11, the end
Plate temperature sensor 10 is evenly arranged in whole catcher base plate 8.When the Contact Temperature that baseplate temp sensor 10 monitors
More than (such as 1200 DEG C) during design temperature, then baseplate temp sensor 10 can trigger switch 11 transmission warning to cover plate release
Signal, when the baseplate temp sensor 10 reaching sum more than 70% all sends alarm, cover plate release triggers switch 11 will
Being triggered, thus discharge catcher cover plate 9, catcher cover plate 9 relies on gravity fall, and (falling speed is controlled by terminal-velocity antivibrator 15
System), and the pressure relying on own wt to complete the Squeezing ground to the fused mass on catcher base plate 8 sprawls operation.Additionally, in order to
Performing pressure more reliably and sprawl operation, cover plate release triggers switch 11 can also manually or Remote manually triggers.
As it is shown in figure 1, the reactor core catcher that fused mass is sprawled in a kind of pressure that the present invention provides uses active and passive
Two ways carries out cooling down to fused mass.
Enabling fashion is by setting up base plate coolant circulation passage 16, and utilize in base plate coolant circulation passage 16 is cold
But agent carry out cool down circulation realize.Concrete scheme is: arrange the base plate coolant of the closed circulation running through fused mass propagation chamber 7
Circulation canal 16, base plate coolant circulation passage 16 be positioned at fused mass propagation chamber 7 to partially pass through catcher base plate 8 internal,
The part that base plate coolant circulation passage 16 is positioned at outside fused mass propagation chamber 7 is disposed with base plate cooling circulating water pump 17, the end
Plate cooling circulating air cooling device 18 and base plate cooling recycle heat exchanger 19, coolant can be in base plate coolant circulation passage 16
Closed cycle flow.In base plate coolant circulation passage 16, the coolant of flowing is completely isolated with fused mass 3.
Passive mode is to use to inject cooling water to fused mass propagation chamber 7, forms cooling pond and realizes.Concrete scheme
It is: in fused mass propagation chamber 7, (top above such as fused mass propagation chamber 7) arranges fused mass propagation chamber waterflood-transmission line 20 and melt
Rong Wu propagation chamber vent passages 14, injects cooling water in fused mass propagation chamber 7 by fused mass propagation chamber waterflood-transmission line 20, floods
Catcher base plate 8 after not closing, catcher cover plate 9, take away the heat of fused mass 3, it is achieved melted by cooling evaporation of water
The cooling of thing 3.
Sprawl the reactor core catcher of fused mass according to a kind of pressure provided by the present invention, present invention also offers a kind of strong
System sprawls the cooling means of fused mass, comprises the following steps:
(S1) fused mass having incorporated reactor pit expendable material 4 is slipped to fused mass propagation chamber 7 by transfer of melt passage 6
On catcher base plate 8 on inner bottom plating；
(S2) the baseplate temp sensor 10 more than the specified quantity on catcher base plate 8 triggers switch to cover plate release
11 send alarm signal (such as when the baseplate temp sensor 10 of more than 70% sends alarm signal), and cover plate release triggering is opened
Closing 11 to be triggered, catcher cover plate 9 is discharged downwards；Cover plate release triggers switch 11 can also manually or Remote people
Work triggers；
(S3) catcher cover plate 9 falls along cover plate whereabouts directional support 12, and constitutes closing with catcher base plate 8 Guan Bi
Fused mass sprawls space, and fused mass 3 is forced uniformly to spread over fused mass and sprawls in space；
(S4) base plate cooling circulating water pump 17, base plate cooling circulating air cooling device 18, base plate cooling recycle heat exchanger are started
19, make the coolant in base plate cooling circulation agent passage 16 start the cycle over, reactor core fused mass is carried out enabling fashion cooling；Melted
Thing propagation chamber waterflood-transmission line 20 starts to inject cooling water to fused mass propagation chamber 7, floods the catcher base plate 8 after Guan Bi and trapping
Device cover plate 9.
Finally illustrate the actual application of the reactor core fused mass catcher that a kind of pressure provided by the present invention is sprawled.
As it is shown in figure 1, when the core meltdown of reactor occurs, the fused mass 3 in reactor core melts wears reactor pressure vessel 1
After be slipped to bottom reactor pit 2 lay reactor pit expendable material 4 on, when fused mass 3 fully merges with reactor pit expendable material 4
And after melting and wearing reactor pit expendable material 4, coming into contact with the end, hole fusing plug 5, the end, hole fusing plug 5 is positioned at transfer of melt passage 6 with anti-
Answer the junction bottom heap reactor pit 2, after the end, hole fusing plug 5 is melted thing 3 burn through, merge the melted of reactor pit expendable material 4
Thing 3 enters in fused mass propagation chamber 7 along transfer of melt passage 6, and is slipped on catcher base plate 8, along with fused mass 3 is continuous
Slipping into, the fused mass on catcher base plate 8 starts to rely on self gravitation to sprawl, when fused mass 3 touches on catcher base plate 8
During baseplate temp sensor 10, baseplate temp sensor 10 can send by the cover plate release triggering switch 11 on catcher cover plate 9
Alarm signal (sets the alarm temperature of baseplate temp sensor 10 as 1200 DEG C), when the baseplate temp accounting for total quantity more than 70%
After sensor 10 signal an alert, cover plate release triggers switch 11 and is triggered, and catcher cover plate 9 is released, and damps in terminal-velocity
Fall along cover plate whereabouts directional support 12 with certain speed under the control of device 15 and cover on catcher base plate 8, extruding trapping
Fused mass 3 on device base plate 8, makes fused mass 3 be forced to clamp-on formed between catcher base plate 8 and catcher cover plate 9
The fused mass of Guan Bi sprawls space.Subsequent start-up base plate cooling circulating water pump 17, base plate cooling circulating air cooling device 18, base plate cooling
Recycle heat exchanger 19 equipment such as grade so that the coolant in base plate coolant circulation passage 16 starts the cycle over, thus takes away melted
The heat of thing 3；Inject cooling water 13 by fused mass propagation chamber waterflood-transmission line 20 to fused mass propagation chamber 7, at fused mass simultaneously
Form cooling pond in propagation chamber 7, flood the catcher base plate 8 after Guan Bi and catcher cover plate 9, by cooling evaporation of water band
Walk the heat of fused mass 3, it is achieved the cooling of fused mass 3.Owing to fused mass 3 has merged the reactor pit expendable material 4 of metal simple-substance, with
And each the protruding and spatial form formed that caves between catcher base plate 8 and catcher cover plate 9 so that fused mass 3 is cold
Form multiple relatively independent metal burden body the most afterwards so that subsequent treatment work is greatly simplified.Additionally, due to after major accident
The flowing of the fused mass in reactor has a lot of uncertainty, therefore the most complete for catcher cover plate 9 and catcher base plate 8
The requirement of coupling, exposing even if there is fraction of fused mass, being also acceptable.
Reactor core catcher of the present invention is not limited to the embodiment described in detailed description of the invention, people in the art
Member draws other embodiment according to technical scheme, also belongs to the technological innovation scope of the present invention.
Claims (9)
1. the reactor core fused mass catcher that pressure is sprawled, including by transfer of melt passage (6) coupled reaction heap reactor pit
(2) fused mass propagation chamber (7), is characterized in that: the inner bottom surface described fused mass propagation chamber (7) is provided with carrying institute
State the catcher base plate (8) of the fused mass that transfer of melt passage (6) carries, be arranged on described catcher base plate (8) top
With the catcher cover plate (9) of catcher cover plate steam vent (94), described catcher base plate (8), catcher cover plate (9) are if passing through
Dry cover plate whereabouts directional support (12) connects, and described catcher cover plate (9) can cover on described catcher base plate (8).
2. reactor core fused mass catcher as claimed in claim 1, is characterized in that: described catcher base plate (8) periphery sides is along setting
It is equipped with catcher base plate profile convex edge (80), inner panel face is provided with some catchers base plate projection (81) and catcher base plate
Depression (82)；Described catcher cover plate (9) periphery sides, along being provided with catcher cover plate profile convex edge (90), inner panel face is arranged
There are some catchers cover plate projection (91) and catcher cover plate depression (92), described catcher base plate profile convex edge (80), trapping
Device cover plate profile convex edge (90) can compact siro spinning technology, described catcher base plate depression (82) can accommodate described catcher cover plate dash forward
Rising (91), described catcher cover plate depression (92) can accommodate described catcher base plate projection (81)；When described catcher cover plate
(9) covering when described catcher base plate (8) is upper, the fused mass of both Inner Constitution one Guan Bi sprawls space.
3. reactor core fused mass catcher as claimed in claim 1, is characterized in that: be additionally provided with on described catcher cover plate (9)
Some terminal-velocity antivibrators (15), are used for controlling what described catcher cover plate (9) was fallen along described cover plate whereabouts directional support (12)
Speed.
4. the reactor core fused mass catcher as described in claim 1,2, is characterized in that: described catcher base plate (8), catcher lid
Plate (9), cover plate whereabouts directional support (12) all use resistant to elevated temperatures metal, alloy, nonmetal or composite manufacture, contact or
Near surface or the top layer of fused mass, all use tungsten Penetrator or composite silicon carbide ceramic material.
5. catcher as claimed in claim 2, is characterized in that: be additionally provided with described in control on described catcher cover plate (9) and catch
The cover plate release that storage cover plate (9) falls triggers switch (11), in catcher base plate depression (82) of described catcher base plate (8)
It is provided with the release of some connections described cover plate and triggers the baseplate temp sensor (10) of switch (11).
6. reactor core fused mass catcher as claimed in claim 1, is characterized in that: be additionally provided with and run through described fused mass propagation chamber
(7) the base plate coolant circulation passage (16) of closed circulation, described base plate coolant circulation passage (16) is positioned at described melted
Partially passing through inside described catcher base plate (8) in thing propagation chamber (7), described base plate coolant circulation passage (16) is positioned at institute
State fused mass propagation chamber (7) part outward and be disposed with base plate cooling circulating water pump (17), base plate cooling circulating air cooling device
(18) and base plate cooling recycle heat exchanger (19), coolant can follow at described base plate coolant circulation passage (16) inner sealing
Circulation moves.
7. reactor core fused mass catcher as claimed in claim 1, is characterized in that: also set up on described fused mass propagation chamber (7)
There are fused mass propagation chamber waterflood-transmission line (20) and fused mass propagation chamber vent passages (14).
8. reactor core fused mass catcher as claimed in claim 1, is characterized in that: described reactor pit is provided with gold in (2)
Belonging to the reactor pit expendable material (4) of simple substance, described transfer of melt passage (6) is arranged with the junction of described reactor pit (2)
There is end fusing plug, hole (5).
9. reactor core fused mass catcher as claimed in claim 5, is characterized in that: the release of described cover plate triggers switch (11) can
It is triggered according to the alarm signal that described baseplate temp sensor (10) sends, it is also possible to manually or Remote manually touches
Send out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674347.3A CN106251915A (en) | 2016-08-16 | 2016-08-16 | The reactor core fused mass catcher that a kind of pressure is sprawled |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674347.3A CN106251915A (en) | 2016-08-16 | 2016-08-16 | The reactor core fused mass catcher that a kind of pressure is sprawled |
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| CN106251915A true CN106251915A (en) | 2016-12-21 |
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| CN201610674347.3A Pending CN106251915A (en) | 2016-08-16 | 2016-08-16 | The reactor core fused mass catcher that a kind of pressure is sprawled |
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| CN (1) | CN106251915A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106651217A (en) * | 2017-01-06 | 2017-05-10 | 中国核动力研究设计院 | Reactor core water injection evaluation method for nuclear power plant equipped with reactor core catcher |
| CN108550406A (en) * | 2018-03-16 | 2018-09-18 | 中国核电工程有限公司 | Reactor core fusant capturing device |
| 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 |
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| CN105513649A (en) * | 2016-01-14 | 2016-04-20 | 中国核电工程有限公司 | Reactor core molten debris grouping retention and cooling system |
| CN105551537A (en) * | 2015-12-10 | 2016-05-04 | 中国核电工程有限公司 | Molten core catcher capable of realizing layered forced spreading |
| CN105551541A (en) * | 2015-12-16 | 2016-05-04 | 中国核电工程有限公司 | Core melt grouping trapping and cooling system |
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| DE4306864A1 (en) * | 1993-03-05 | 1994-09-08 | Siempelkamp Gmbh & Co | Arrangement for securing a nuclear reactor in the event of a core melt-down |
| CN105551537A (en) * | 2015-12-10 | 2016-05-04 | 中国核电工程有限公司 | Molten core catcher capable of realizing layered forced spreading |
| CN105551541A (en) * | 2015-12-16 | 2016-05-04 | 中国核电工程有限公司 | Core melt grouping trapping and cooling system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106651217A (en) * | 2017-01-06 | 2017-05-10 | 中国核动力研究设计院 | Reactor core water injection evaluation method for nuclear power plant equipped with reactor core catcher |
| CN108550406A (en) * | 2018-03-16 | 2018-09-18 | 中国核电工程有限公司 | Reactor core fusant capturing device |
| CN108550406B (en) * | 2018-03-16 | 2020-05-05 | 中国核电工程有限公司 | Reactor core melt trapping device |
| 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 |
| 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 |
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Application publication date: 20161221 |