CN106816184A - A kind of system for preventing nuclear power station radioactive grain product from spreading - Google Patents
A kind of system for preventing nuclear power station radioactive grain product from spreading Download PDFInfo
- Publication number
- CN106816184A CN106816184A CN201710121151.6A CN201710121151A CN106816184A CN 106816184 A CN106816184 A CN 106816184A CN 201710121151 A CN201710121151 A CN 201710121151A CN 106816184 A CN106816184 A CN 106816184A
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- China
- Prior art keywords
- cooling agent
- hollow channel
- hypostracum
- outer shell
- pedestal
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/10—Means for preventing contamination in the event of leakage, e.g. double wall
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
-
- 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
-
- 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 discloses a kind of system for preventing nuclear power station radioactive grain product from spreading, the system includes non-proliferation device (100), pedestal (200) and cold supply system；Non-proliferation device (100) is arranged on outside nuclear reactor, diffusion for preventing radioactive grain product, it includes hypostracum (110) and outer shell (120), is the closed hollow channel (130) that cooling agent can be allowed to circulate between two shells；Pedestal (200) installed in non-proliferation device (100) lower section, for supporting non-proliferation device (100)；The cold supply system is connected with non-proliferation device (100) and pedestal (200), it provides cooling agent to the hollow channel (130) of non-proliferation device (100), and cooling agent is carried out to collect recovery by pedestal (200).The system that nuclear power station radioactive grain product spreads of preventing in the present invention, with safe efficient, easy to implement, control it is simple and can modularization assembling the features such as, can effectively prevent the diffusion of nuclear power station radioactive grain product.
Description
Technical field
The present invention relates to nuclear plant safety field, more particularly to it is a kind of prevent that nuclear power station radioactive grain product from spreading be
System.
Background technology
The nuclear reactor of nuclear power station has three road barriers, and first is fuel can, and second is pressure vessel, and the 3rd road is
Cement overcoat.Generally, this three roads barrier can effectively ensure that the safety of nuclear power station, but can be sent out under some accidents
The situation of raw nuclear power station overcoat rupture, so that radioactive grain product can spread and go out from overcoat ceasma, into air
Environment, so as to endanger nearby residents safety.At present, not yet having can be effective while the convenient radioactive grain that prevents implemented is produced
The system and method for thing diffusion.
The present inventor is studied nuclear power station protector, a kind of with safe efficient, easy to implement, control to provide
System it is simple and can modularization assembling the features such as the system for preventing nuclear power station radioactive product from spreading.
The content of the invention
In order to solve the above problems, present inventor has performed studying with keen determination, as a result find：Set outside cement overcoat
Non-proliferation device comprising hypostracum and outer shell, can allow cooling agent to pass through between two shells (hypostracum and outer shell)
Closed hollow channel, while corresponding multiple through holes are opened up on two shells, by connecting corresponding on two shells leading to
Hole is formed through the duct of hollow channel.By non-proliferation when nuclear power station radioactive grain product spreads from cement overcoat
During device, in the presence of DIFFUSION IN TURBULENCE and thermophoretic forces, these radioactive grain products can be deposited on the duct of non-proliferation device
It is interior, the further diffusion of radioactive grain product is prevented, so as to complete the present invention.
It is an object of the invention to provide following technical scheme：
1st, a kind of system for preventing nuclear power station radioactive grain product from spreading, wherein, the system includes non-proliferation device
100th, pedestal 200 and cold supply system；
Wherein, the non-proliferation device 100 is arranged on outside nuclear reactor, the expansion for preventing radioactive grain product
Dissipate, it includes hypostracum 110 and outer shell 120, it is close for cooling agent can be allowed to circulate between hypostracum 110 and outer shell 120
The hollow channel 130 for closing；
The pedestal 200 is arranged on the lower section of non-proliferation device 100, and for supporting non-proliferation device 100, pedestal 200 is block
Shape structure, its upper surface is sealed for planar structure with the hollow channel 130 to non-proliferation device 100, and is collected hollow logical
Cooling agent in road 130 is to cold supply system；
The cold supply system is connected with non-proliferation device 100 and pedestal 200, its to non-proliferation device 100 hollow channel
130 provide cooling agent, and cooling agent are carried out by pedestal 200 collect recovery.
2nd, a kind of method for preventing nuclear power station radioactive grain product from spreading, is preferably carried out by the system described in above-mentioned 1,
Wherein, the described method comprises the following steps：
Cooling agent shower nozzle 330 conveys pump machine 320 from coolant source 310 in the cooling agent penetrating hollow channel 130 for coming, and makes
Hollow channel 130 maintains relatively low temperature, when high temperature radioactive granular product is passed through from duct 140, is then deposited on duct 140
In；Cooling agent is fallen on the upper surface of pedestal 200 after flowing through hollow channel 130, and converges into cooling agent receiver 340, finally
It is delivered to coolant source 310 and completes one cycle, repeats this process.
3rd, a kind of nuclear reactor, wherein, being provided with outside the nuclear reactor described in above-mentioned 1 prevents nuclear power station radioactivity
The system of grain product diffusion.
According to a kind of system for preventing nuclear power station radioactive grain product from spreading that the present invention is provided, with following beneficial effect
Really：
(1) it is a kind of in the present invention to prevent the system that nuclear power station radioactive grain product spreads equivalent to the 4th of nuclear reactor
Road barrier, when nuclear power station radioactive grain product spreads from cement overcoat (outermost layer) and goes out by the 4th road barrier,
In the presence of DIFFUSION IN TURBULENCE and thermophoretic forces, these radioactive grain products can be deposited in the duct in the 4th road barrier, can be had
Effect avoids the risk of radioactive grain product diffusion in the case of major accident；
(2) hypostracum and outer shell of non-proliferation device are hemispherical dome structure in the present invention, and cooling agent shower nozzle is arranged on anti-
The top of disperser, this kind of design is easy to cooling agent from top to bottom to be flowed in hollow channel, and makes the inside of hypostracum empty
Between it is larger, it is ensured that the space length of the cement overcoat (outermost layer) of hypostracum and nuclear reactor；
(3) design of cold supply system realizes recycling for cooling agent in the present invention, greatly reduces use cost；
(4) the system design clear principle for preventing the diffusion of nuclear power station radioactive grain product in the present invention, simple structure,
Economically can be manufactured by scale, it is simple with safe efficient, easy to implement, control and can modularization assembling etc.
Feature, can effectively prevent the diffusion of nuclear power station radioactive grain product.
Brief description of the drawings
Fig. 1 shows a kind of system for preventing nuclear power station radioactive grain product from spreading of preferred embodiment in the present invention
Schematic diagram；
Fig. 2 shows a kind of non-proliferation device top view figure of preferred embodiment in the present invention；
Fig. 3 shows a kind of pore passage structure schematic diagram of preferred embodiment in the present invention；
Duct is the structural representation of cylinder during Fig. 4 shows the present invention；
Fig. 5 shows a kind of non-proliferation schematic device of preferred embodiment in the present invention.
Drawing reference numeral explanation：
100- non-proliferation devices；
110- hypostracums；
120- outer shells；
130- hollow channels；
140- ducts；
150- heat-insulation layers；
200- pedestals；
310- coolant sources；
320- pump machines；
330- cooling agent shower nozzles；
340- cooling agent receivers.
Specific embodiment
Below by the present invention is described in detail, the features and advantages of the invention will become more with these explanations
For clear, clear and definite.
As shown in figure 1, the invention provides a kind of system for preventing nuclear power station radioactive grain product from spreading, the system bag
Include non-proliferation device 100, pedestal 200 and cold supply system；
Wherein, the non-proliferation device 100 is arranged on outside nuclear reactor, the expansion for preventing radioactive grain product
Dissipate, it includes hypostracum 110 and outer shell 120, it is close for cooling agent can be allowed to circulate between hypostracum 110 and outer shell 120
The hollow channel 130 for closing；
The pedestal 200 is arranged on the lower section of non-proliferation device 100, and for supporting non-proliferation device 100, pedestal 200 is block
Shape structure, upper surface is sealed for planar structure with the hollow channel 130 to non-proliferation device 100, and collects hollow channel
Cooling agent in 130 is to cold supply system；
The cold supply system is connected with non-proliferation device 100 and pedestal 200, and cold supply system is in non-proliferation device 100
Empty passage 130 provides cooling agent, and cooling agent is reclaimed by pedestal 200.
In a preferred embodiment, the hypostracum 110 and outer shell 120 be triangular structure, trapezium structure,
Rectangular configuration or hemispherical dome structure, preferably hemispherical dome structure.The setting of hemispherical dome structure is easy to cooling agent in hollow channel 130
In from top to bottom flow, and make the inner space of hypostracum 110 larger, it is ensured that hypostracum 110 is prevented with the cement of nuclear reactor
The space length of sheath (outermost layer), when radioactive grain product from cement overcoat spread and when going out, can hypostracum 110 with
Slow down in the space length of cement overcoat to outside diffusion velocity.
In further preferred embodiment, the material of the hypostracum 110 is metal material, preferably aluminium or steel,
Thickness is 1cm~3cm；The material of the outer shell 120 is metal material, preferably aluminium or steel, and thickness is 1cm~3cm.This is thick
On the one hand the metal material of degree can reduce heat transfer resistance, pipes' analysis is maintained lower temperature, on the other hand can resist and come from
The impact of outside or inside.
In implementation method still more preferably, the hollow channel 130 between the hypostracum 110 and outer shell 120
Width be 0.8m~1m.The hollow channel 130 of this width range, can accommodate the cooling agent of q.s, realize the He of hypostracum 110
The refrigeration of outer shell 120.
In a preferred embodiment, opened up on the hypostracum 110 and outer shell 120 of the non-proliferation device 100
Multiple corresponding through holes, through hole corresponding on two shells is connected by through the duct 140 of hollow channel 130.Meanwhile, hole
Road 140 can make cooling agent and be flowed with turbulence form in hollow channel 130, strengthen cooling agent to hypostracum 110 and outer shell 120
Cooling effect.When nuclear power station radioactive grain product spreads from cement overcoat and goes out by non-proliferation device 100, in rapids
In the presence of stream diffusion and thermophoretic forces, these radioactive grain products can be deposited in the duct 140 of non-proliferation device 100, prevented
The only further diffusion of radioactive grain product.
In a preferred embodiment, the through hole on hypostracum 110 and outer shell 120 is respectively perpendicular to hypostracum
110 and outer shell 120 or hypostracum 110 and outer shell 120 tangent line (when hypostracum 110 and outer shell 120 are hemispherical dome structure
When).As shown in Fig. 2 the through hole is the simple geometry such as circle, triangle, rectangle, and it is preferably circular, in processing side
Just while, it is easy to the cleaning of through hole.
Corresponding with shape of through holes, the main cross section (section on the length direction in duct 140) in the duct 140 is circle
The simple geometry such as shape, triangle, rectangle, but its global shape can be but be not limited to cylinder, prism structure.As schemed
Shown in 3, it is preferable that the main cross section in duct 140 is circle, on the length direction in duct 140, the radius of circular cross-section is first increasing
The trend reduced after big is gradually changed, and the surface area of correspondence through hole can be equal or unequal on hypostracum 110 and outer shell 120.
The duct 140 of this structure has bigger surface area and volume relative to conventional cylinder duct (Fig. 4), effectively reduces radiation
Property granular product enter duct 140 after speed, make radioactive grain product be easier to be deposited on the surface in duct 140.
In a preferred embodiment, the length in the duct 140 is 0.8m~1m, the width with hollow channel 130
Degree is corresponding, it is ensured that in the presence of thermophoretic forces, radioactive grain product is fully deposited on the surface in duct.
In a preferred embodiment, the through hole is uniformly distributed on hypostracum 110 and outer shell 120.Inner casing
The surface area of single through hole is 0.008~0.03m on layer 1102If (through hole is circle, and radius is 0.05~0.1m), hypostracum
The ratio between total surface area of the surface area sum of all through holes and hypostracum 110 is 1 on 110:25~1:35.
The surface area of single through hole is 0.008~0.03m on outer shell 1202If (through hole for circle, radius be 0.05~
0.1m), the ratio between total surface area of the surface area sum of all through holes and outer shell 120 is 1 on outer shell 120:30~1:40.
While maintaining 120 impact strength of hypostracum 110 and outer shell, the number of through hole (or duct 140) is more, to radioactivity
Grain product non-proliferation efficiency is higher, effect is better.Wherein, the surface area of through hole be through hole in the outer surface of hypostracum 110 or
The area of the outer surface of outer shell 120, the not surface area in duct 140.
In further preferred embodiment, the surface layout in duct 140 has porous media, further to fully absorb
Radioactive grain product.Wherein, the porous media is selected from any in foamed aluminium, dimethyl silicone rubber, nickel foam or Graphene
One or more, preferably Graphene.
In a preferred embodiment, as shown in figure 5, the non-proliferation device 100 also includes heat-insulation layer 150, institute
State heat-insulation layer 150 to be arranged on outside outer shell 120, to reduce the heat transfer of outer shell 120 and environment, keep non-proliferation device
Low temperature environment in 100.Wherein, the heat-insulation layer 150 from heat-transfer effect difference material, such as silicate fiber plate (such as silicic acid
Aluminum fiberboard) or rock cotton board, its thickness is 20~40mm.Multiple through holes corresponding with outer shell 120 are set on heat-insulation layer 150,
Make non-proliferation device 100 it is inside and outside realize gas circulate.
In the present invention, as shown in figure 1, the upper surface that the pedestal 200 is connected with non-proliferation device 100 is inclined-plane knot
Structure, the ramp structure as hollow channel 130 bottom, Main Function is to make cooling agent under gravity along inclined-plane
Structure flows down, and is easy to the recovery of cooling agent.
In a preferred embodiment, pedestal 200 is solid construction, is steel or other corrosion resistant metal material systems
Into the metal material can be single metal or alloy material.
In the present invention, as shown in figure 1, the cold supply system includes coolant source 310, pump machine 320, cooling agent shower nozzle 330
With cooling agent receiver 340.
The coolant source 310 is connected with pump machine 320 and cooling agent receiver 340, for the storage and preparation of cooling agent.
The pump machine 320 is the power part of cold supply system, and it is connected with coolant source 310 and cooling agent shower nozzle 330, will
Cooling agent in coolant source 310 is sent to cooling agent shower nozzle 330.
The cooling agent shower nozzle 330 is arranged on the top of non-proliferation device 100, is connected with hollow channel 130, can be to its surrounding
Cooling agent is sprayed, cooling agent is flowed from top to bottom in hollow channel 130.The coolant flow of cooling agent shower nozzle 330 meets
Enable that cooling agent is full of hollow channel 130.
The cooling agent receiver 340 is arranged on one end of pedestal 200, and it is connected with the bottom of hollow channel 130, by platform
The cooling agent that seat 200 collects derives hollow channel 130, and is transmitted back to coolant source 310, realizes recycling for cooling agent.
In the present invention, the cooling agent can be liquid coolant or gaseous coolant, the liquid coolant be selected from seawater,
Sewage or common drinking water after treatment；The gaseous coolant is selected from low temperature nitrogen, carbon dioxide or air.Cooling agent is excellent
Elect liquid coolant, the more preferably sewage after seawater or treatment as.Wherein, the sewage after treatment refer to removal sewage in it is insoluble
In sewage after the suspended solid and floating substance of solution, or removal sewage after undissolved suspended solid and floating substance, enter
One step carries out material conversion by the metabolism of microorganism, and the various complicated oxidation operations in sewage are degraded to simply
Material after not up to drink the sewage of rank.
In a preferred embodiment, the temperature control of the cooling agent is at 0~100 DEG C.
Another aspect of the present invention is to provide a kind of method for preventing nuclear power station radioactive grain product from spreading, and preferably passes through
Said system is carried out, and be the described method comprises the following steps：
Cooling agent shower nozzle 330 conveys pump machine 320 from coolant source 310 in the cooling agent penetrating hollow channel 130 for coming, and makes
Hollow channel 130 maintains relatively low temperature, when high temperature radioactive granular product is passed through from duct 140, in the effect of thermophoretic forces
Under be deposited in duct 140；Cooling agent is fallen on the upper surface of pedestal 200 after flowing through hollow channel 130, and converges into cooling agent
Receiver 340, is finally delivered to coolant source 310 and completes one cycle, repeats this process.
It is another aspect of the present invention to provide a kind of nuclear reactor, being provided with outside the nuclear reactor above-mentioned prevents nuclear power station
The system of radioactive grain product diffusion, the system includes non-proliferation device 100, pedestal 200 and cold supply system；
Wherein, the non-proliferation device 100 is arranged on outside nuclear reactor, the expansion for preventing radioactive grain product
Dissipate, it includes hypostracum 110 and outer shell 120, it is close for cooling agent can be allowed to circulate between hypostracum 110 and outer shell 120
The hollow channel 130 for closing；
The pedestal 200 is arranged on the lower section of non-proliferation device 100, and for supporting non-proliferation device 100, pedestal 200 is block
Shape structure, upper surface is sealed for planar structure with the hollow channel 130 to non-proliferation device 100, and is collected nonproliferation in bulk
Put cooling agent in 100 to cold supply system；
The cold supply system is connected with non-proliferation device 100 and pedestal 200, and cold supply system is in non-proliferation device 100
Empty passage 130 provides cooling agent, and cooling agent is reclaimed by pedestal 200.
Embodiment
Embodiment 1
A kind of system for preventing nuclear power station radioactive grain product from spreading, the system includes non-proliferation device 100, pedestal
200 and cold supply system, the cold supply system includes that coolant source 310, pump machine 320, cooling agent shower nozzle 330 and cooling agent are received
Device 340.
Non-proliferation device 100 is arranged on outside nuclear reactor, and it includes hemispheric hypostracum 110 and outer shell 120, two
It is the closed hollow channel 130 for making cooling agent circulate between shell, hypostracum 110 and outer shell 120 are the steel that thickness is 2cm
Plate, the width of hollow channel 130 is 0.8m.Hypostracum 110 and the corresponding through hole of setting on outer shell 120, on two shell
Correspondence through hole is connected by cylindrical bore 140, and the surface area of single through hole is 0.01m on hypostracum 1102, on hypostracum 110
The ratio between the surface area sum of all through holes and the total surface area of hypostracum 110 are 1:30；The surface of single through hole on outer shell 120
Product is 0.01m2, the ratio between total surface area of the surface area sum of all through holes and outer shell 120 is 1 on outer shell 120:35.It is single
The surface area in individual duct 140 is 0.284m2, volume is 0.008m3。
The top of non-proliferation device 100 is provided with cooling agent shower nozzle 330, and the cooling agent shower nozzle 330 connects with hollow channel 130
It is logical, pump machine 320 is conveyed from coolant source 310 during the cooling agent for coming sprays into hollow channel 130, make hollow channel 130 maintain compared with
Low temperature.
The pedestal 200 is arranged on the lower section of non-proliferation device 100, is solid construction, and it is upper with what hollow channel 130 was connected
Surface is ramp structure, and under gravity, cooling agent can flow to cooling agent receiver 340, cooling agent under inclined-plane
The cooling agent of recovery is sent to coolant source 310 by receiver 340.
The test analysis for carrying out preventing radioactive grain product from spreading using said system, it is cold when cooling agent is seawater
But the inlet temperature at agent shower nozzle 330 is 10~15 DEG C, and the outlet temperature at cooling agent receiver 340 is 60~90 DEG C, radiation
Property granular product temperature be 200~300 DEG C, radioactive grain product diffusion velocity is 10~15m/s, is as a result shown, using upper
It is 10%~20% that system is stated to the absorptivity of radioactive grain product.
Embodiment 2
A kind of system for preventing nuclear power station radioactive grain product from spreading, the system includes non-proliferation device 100, pedestal
200 and cold supply system, the cold supply system includes that coolant source 310, pump machine 320, cooling agent shower nozzle 330 and cooling agent are received
Device 340.
Non-proliferation device 100 is arranged on outside nuclear reactor, and it includes hemispheric hypostracum 110 and outer shell 120, two
It is the closed hollow channel 130 for making cooling agent circulate between shell, hypostracum 110 and outer shell 120 are the steel that thickness is 2cm
Plate, the width of hollow channel 130 is 0.8m.Hypostracum 110 and the corresponding through hole of setting on outer shell 120, on two shell
Correspondence through hole is connected by cylindrical bore 140, and the surface area of single through hole is 0.01m on hypostracum 1102, on hypostracum 110
The ratio between the surface area sum of all through holes and the total surface area of hypostracum 110 are 1:30；The surface of single through hole on outer shell 120
Product is 0.01m2, the ratio between total surface area of the surface area sum of all through holes and outer shell 120 is 1 on outer shell 120:35.It is single
The surface area in individual duct 140 is 0.284m2, volume is 0.008m3.The surface of cylindrical bore 140 coats porous media to enter one
Step Adsorption of Radioactive granular product, wherein, the porous media is Graphene.
The top of non-proliferation device 100 is provided with cooling agent shower nozzle 330, and the cooling agent shower nozzle 330 connects with hollow channel 130
It is logical, pump machine 320 is conveyed from coolant source 310 during the cooling agent for coming sprays into hollow channel 130, make hollow channel 130 maintain compared with
Low temperature.
The pedestal 200 is arranged on the lower section of non-proliferation device 100, is solid construction, and it is upper with what hollow channel 130 was connected
Surface is ramp structure, and under gravity, cooling agent can flow to cooling agent receiver 340, cooling agent under inclined-plane
The cooling agent of recovery is sent to coolant source 310 by receiver 340.
The test analysis for carrying out preventing radioactive grain product from spreading using said system, it is cold when cooling agent is seawater
But the inlet temperature at agent shower nozzle 330 is 10~15 DEG C, and the outlet temperature at cooling agent receiver 340 is 60~90 DEG C, radiation
Property granular product temperature be 200~300 DEG C, radioactive grain product diffusion velocity is 10~15m/s, is as a result shown, cylinder
After the surface of duct 140 coating porous media, system is 40%~60% to the absorptivity of radioactive grain product.
Embodiment 3
A kind of system for preventing nuclear power station radioactive grain product from spreading, the system includes non-proliferation device 100, pedestal
200 and cold supply system, the cold supply system includes that coolant source 310, pump machine 320, cooling agent shower nozzle 330 and cooling agent are received
Device 340.
Non-proliferation device 100 is arranged on outside nuclear reactor, and it includes hemispheric hypostracum 110 and outer shell 120, two
It is the closed hollow channel 130 for making cooling agent circulate between shell, hypostracum 110 and outer shell 120 are the steel that thickness is 2cm
Plate, the width of hollow channel 130 is 0.8m.Hypostracum 110 and the corresponding through hole of setting on outer shell 120, on two shell
Correspondence through hole is connected by duct 140.The main cross section in duct 140 is circle, on the length direction in duct 140, circular cross-section
Radius gradually changed with the trend of first increases and then decreases, the surface area of duct 140 more conventional periphery product is big.Hypostracum
The surface area of single through hole is 0.03m on 1102, the surface area sum of all through holes is total with hypostracum 110 on hypostracum 110
Surface area ratio is 1:35；The surface area of single through hole is 0.03m on outer shell 1202, the table of all through holes on outer shell 120
The ratio between total surface area of area sum and outer shell 120 is 1:40.The surface area in single duct 140 is 0.709m2。
The top of non-proliferation device 100 is provided with cooling agent shower nozzle 330, and the cooling agent shower nozzle 330 connects with hollow channel 130
It is logical, pump machine 320 is conveyed from coolant source 310 during the cooling agent for coming sprays into hollow channel 130, make hollow channel 130 maintain compared with
Low temperature.
The pedestal 200 is arranged on the lower section of non-proliferation device 100, is solid construction, and it is upper with what hollow channel 130 was connected
Surface is ramp structure, and under gravity, cooling agent can flow to cooling agent receiver 340, cooling agent under inclined-plane
The cooling agent of recovery is sent to coolant source 310 by receiver 340.
The test analysis for carrying out preventing radioactive grain product from spreading using said system, it is cold when cooling agent is seawater
But the inlet temperature at agent shower nozzle 330 is 10~15 DEG C, and the outlet temperature at cooling agent receiver 340 is 60~90 DEG C, radiation
Property granular product temperature be 200~300 DEG C, radioactive grain product diffusion velocity is 10~15m/s, is as a result shown, single hole
When the surface area in road is larger, system is 30%~40% to the absorptivity of radioactive grain product.
In the description of the invention, it is necessary to explanation, term " on ", D score, " interior ", the orientation or position of the instruction such as " outward "
The relation of putting is, based on the orientation or position relationship under working condition of the present invention, to be for only for ease of the description present invention and simplification is retouched
State, rather than indicate imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
Above in association with preferred embodiment the present invention is described, but these implementation methods are only exemplary
, only play illustrative effect.On this basis, various replacements and improvement can be carried out to the present invention, these each fall within this
In the protection domain of invention.
Claims (10)
1. it is a kind of prevent nuclear power station radioactive grain product spread system, it is characterised in that the system include it is nonproliferation in bulk
Put (100), pedestal (200) and the cold supply system being connected with non-proliferation device (100) and pedestal (200).
2. system according to claim 1, it is characterised in that wherein, the non-proliferation device (100) is arranged on nuclear reaction
Outside heap, it includes hypostracum (110) and outer shell (120), cold for that can allow between hypostracum (110) and outer shell (120)
But the closed hollow channel (130) that agent is circulated；And/or
Installed in non-proliferation device (100) lower section, pedestal (200) is block structure to the pedestal (200), and its upper surface is plane
Structure is sealed with the hollow channel (130) to non-proliferation device (100), and collects the cooling agent in hollow channel (130)
To cold supply system；And/or
The cold supply system provides cooling agent to the hollow channel (130) of non-proliferation device (100), and right by pedestal (200)
Cooling agent carries out collecting recovery.
3. system according to claim 1 and 2, it is characterised in that the hypostracum (110) and outer shell (120) are three
Angular structure, trapezium structure, rectangular configuration or hemispherical dome structure, preferably hemispherical dome structure.
4. according to the system that one of claims 1 to 3 is described, it is characterised in that the hypostracum (110) is metal material, excellent
Elect aluminium or steel as, more preferably its thickness is 1cm~3cm；And/or
The outer shell (120) is metal material, preferably aluminium or steel, and more preferably its thickness is 1cm~3cm；And/or
The width of the hollow channel (130) between the hypostracum (110) and outer shell (120) is preferably 0.8m~1m.
5. according to the system that one of Claims 1-4 is described, it is characterised in that the hypostracum of the non-proliferation device (100)
(110) through holes corresponding with multiple is opened up on outer shell (120), are connected by the duct (140) through hollow channel (130)
Corresponding through hole on two shells；And/or
Through hole on hypostracum (110) and outer shell (120) is respectively perpendicular to hypostracum (110) and outer shell (120) or inner casing
The tangent line of layer (110) and outer shell (120)；And/or
The through hole is circular, triangle or rectangle, preferably circular.
6. according to the system that one of claim 1 to 5 is described, it is characterised in that the surface area of single through hole on hypostracum (110)
It is 0.008~0.03m2, the ratio between total surface area of the surface area sum of all through holes and hypostracum (110) on hypostracum (110)
It is 1:25~1:35；And/or
The surface area of single through hole is 0.008~0.03m on outer shell (120)2, the surface area of all through holes on outer shell (120)
The ratio between total surface area of sum and outer shell (120) is 1:30~1:40.
7. according to the system that one of claim 1 to 6 is described, it is characterised in that the pedestal (200) and non-proliferation device
(100) connected upper surface is ramp structure, the ramp structure as hollow channel (130) bottom.
8. according to the system that one of claim 1 to 7 is described, it is characterised in that the cold supply system includes coolant source
(310), pump machine (320), cooling agent shower nozzle (330) and cooling agent receiver (340), wherein,
The coolant source (310) is connected with pump machine (320) and cooling agent receiver (340), storage and system for cooling agent
It is standby,
The pump machine (320) is the power part of cold supply system, and it is connected with coolant source (310) and cooling agent shower nozzle (330),
Cooling agent in coolant source (310) is sent to cooling agent shower nozzle (330),
The cooling agent shower nozzle (330) installed in non-proliferation device (100) top, connected with hollow channel (130), can to its four
Week sprays cooling agent, cooling agent is flowed from top to bottom in hollow channel (130),
The cooling agent receiver (340) is arranged on one end of pedestal (200), and it is connected with the bottom of hollow channel (130), will
The cooling agent that pedestal (200) collects derives hollow channel (130), and is transmitted back to coolant source (310).
9. a kind of method for preventing nuclear power station radioactive grain product from spreading, preferably described by one of the claims 1 to 8
System carry out, it is characterised in that the described method comprises the following steps：
The cooling agent that pump machine (320) comes from coolant source (310) conveying is sprayed into hollow channel (130) by cooling agent shower nozzle (330)
In, hollow channel (130) is maintained relatively low temperature, when high temperature radioactive granular product is passed through from duct (140), its deposition
In duct (140)；Cooling agent is fallen on the upper surface of pedestal (200) after flowing through hollow channel (130), and converges into cooling agent
Receiver (340), is finally delivered to coolant source (310) and completes one cycle, repeats this process.
10. a kind of nuclear reactor, it is characterised in that be provided with one of the claims 1 to 8 outside the nuclear reactor described
The system for preventing nuclear power station radioactive grain product from spreading.
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| CN104681107A (en) * | 2015-02-12 | 2015-06-03 | 中国核电工程有限公司 | System and method for preventing inner shell failure and radioactive release of dual-layer containment |
| CN205900105U (en) * | 2016-08-10 | 2017-01-18 | 长江勘测规划设计研究有限责任公司 | Underground nuclear power plant rock mass hole room type containment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62167499A (en) * | 1987-01-23 | 1987-07-23 | 株式会社日立製作所 | Nuclear reactor container |
| CN1065348A (en) * | 1991-03-28 | 1992-10-14 | 西屋电气公司 | The equipment of passive reduction off-site radiation |
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|---|---|
| CN106816184B (en) | 2018-05-08 |
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