CN109147969A - Nuclear reactor fusant reactor core is detained passive cooling system - Google Patents
Nuclear reactor fusant reactor core is detained passive cooling system Download PDFInfo
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- CN109147969A CN109147969A CN201811069319.4A CN201811069319A CN109147969A CN 109147969 A CN109147969 A CN 109147969A CN 201811069319 A CN201811069319 A CN 201811069319A CN 109147969 A CN109147969 A CN 109147969A
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- 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
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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 nuclear reactor fusant reactor cores to be detained passive cooling system, under nuclear reactor major accident state, pacify water injecting tank flood pattern and passive water filling cooling system by low pressure, take reactor core decay heat out of, realize that wholly or largely fuel assembly involucrum keeps rodlike configuration state, core support plate to keep lower temperature, the water in fuel assembly and reactor core molten bath, lower head of pressure vessel can be supported not dry up, it realizes that fusant reactor core is detained, prevents the migration of reactor core fusant from resetting the case where causing lower head to be melted in lower head appearance.
Description
Technical field
The present invention relates to nuclear reactor accident security fields, and in particular to nuclear reactor fusant reactor core is detained passive cold
But system.
Background technique
At present in advanced third generation reactor design both at home and abroad, for alleviate major accident realize reactor core fusant it is cooling and
There are mainly two types of the strategies of delay: 1, cooling in fusant heap and delay (In-Vessel Retention, IVR)；2, fusant
Out-pile is cooling and is detained.The application of the first strategy is using AP600/AP1000 as representative.Second of strategy needs to be arranged special
Fusant trap accepts reactor core fusant, and fusant is cooling and be trapped in inside trap.At present in the world
There are two types of trap schemes by successful development and application, and one is the crucible type traps of VVER-1000, and one is EPR-
1600 expanded type trap.In the application of the first above-mentioned strategy, by taking AP600/AP1000 as an example, reactor core occurs for reactor
After the major accident of fusing, reactor core fusant is inevitably migrated and is reset positioned at lower head of pressure vessel, passes through Reactor cavity flooding
Cooling system floods heap chamber, cooled reactor lower head of pressure vessel outer surface, realizes that fusant is stagnant in lower head of pressure vessel
(IVR) is stayed, the integrality of pressure vessel is maintained.Pass through forming process and structure, the Bath Heat-Transfer etc. for analyzing lower head fusion pool
Process proves that pressure vessel failure is " physically impossible " based on critical heat flux density (CHF) criterion.Take the first plan
Slightly, in fusant lower head when cooling delay (IVR) measure, fusant meeting melt portions lower head of pressure vessel inner wall, pressure
There is a possibility that failure in force container lower head.In order to avoid lower head of pressure vessel is melted object fusing, prevent reactor core from melting
Object migration is reset positioned at lower head of pressure vessel, for low-power nuclear reactor, proposes that a kind of nuclear reactor fusant reactor core is stagnant
Stay passive cooling system.
Summary of the invention
The purpose of the present invention is to provide nuclear reactor fusant reactor cores to be detained passive cooling system, to solve existing skill
The migration of reactor core fusant is reset positioned at lower head of pressure vessel under art center reactor disaster state, is easy to cause lower head
The problem of being melted object fusing realizes that fusant reactor core is detained, and prevents the migration of reactor core fusant from resetting the mesh in lower head
's.
The present invention is achieved through the following technical solutions:
Nuclear reactor fusant reactor core is detained passive cooling system, including pressure vessel, low pressure peace water injecting tank water filling system
System, passive water filling cooling system and the structure in the heap in pressure vessel；
The pressure vessel includes lower head, cylinder, upper cover, and the upper cover, lower head are connected to cylinder
Upper and lower ends；Wherein lower head is spherical in shape or elliposoidal,
Structure includes core support plate, hanging basket, shroud, fuel assembly in the heap, and the core support plate is fixed on down
On the inner wall of end socket, the shroud is fixed on the upper surface of core support plate, and the bottom end of the hanging basket is connected with core support plate,
It is connected at the top of the top of hanging basket and cylinder, the shroud is arranged in hanging basket, and the fuel assembly is arranged in shroud；The heap
Several through-holes are set on core support plate；
The low pressure peace water injecting tank flood pattern into pressure vessel for filling the water；
The passive water filling cooling system is used for when being greater than 650 DEG C to core outlet temperature, cooling pressure outside of containers
Wall.
It is reset under pressure vessel for reactor core fusant migration under nuclear reactor major accident state in the prior art
End socket is easy to cause lower head to be melted the problem of object melts, and it is passive that the present invention proposes that nuclear reactor fusant reactor core is detained
Cooling system.When the system works, when large break, such as the Safety Injection pipeline of connection pressure vessel occurs in reactor-loop
When cut, reactor coolant is largely lost, and the cooling water of Core makeup tank, middle pressure safety injection tank etc. is also lost with cut, at this time
Pacify water injecting tank flood pattern by low pressure, water injecting tank is pacified by low pressure and is filled the water into pressure vessel, part reactor core water level is maintained, from
And take reactor core decay heat out of.When core exit temperature is greater than 650 DEG C, passive water filling cooling system is infused to insulating layer runner
Water cools down pressure vessel lateral wall, to take more heats in pressure vessel out of, avoids reactor core fusant migration weight
Being positioned in lower head causes lower head to be melted.
Further, the low pressure peace water injecting tank flood pattern includes low pressure peace water injecting tank, normally opened electric check valve, first
Check-valves, the low pressure peace water injecting tank are connected with the cylinder, and it is normally opened electronic to setting gradually between cylinder that low pressure pacifies water injecting tank
Shut-off valve, first check-valve.
Further, cooling water, pressurization gas are filled in the low pressure peace water injecting tank, under normal conditions, low pressure pacifies water injecting tank
The pressure of internal pressurization gas is 0.6~1MPa；When the cooling water emptying in low pressure peace water injecting tank, the low pressure pacifies water injecting tank
The pressure of internal pressurization gas is 0.2~0.4MPa.
Further, the pipeline internal diameter that the low pressure peace water injecting tank is connected to cylinder is 20~30mm.
Further, the pressurization gas is nitrogen.
Further, the passive water filling cooling system includes cooling water tank, the Chang Guan electricity outside pressure vessel
Dynamic shut-off valve, second check-valve, insulating layer, insulating layer runner, gas vent, the insulating layer are located at outside pressure vessel, insulating layer
Insulating layer runner is formed between the lateral wall of pressure vessel, the gas vent is located at the top of insulating layer runner, the cooling
Water tank is connected with insulating layer runner, cooling water tank to set gradually between insulating layer runner often close electric check valve, the second non-return
Valve.
Further, the insulating layer integral coating is outside cylinder lower part and lower head.
Further, the width of the insulating layer runner is 50~200mm.
Further, the gas vent is covered by kickboard.
Compared with prior art, the present invention having the following advantages and benefits:
Nuclear reactor fusant reactor core of the present invention is detained passive cooling system, under nuclear reactor major accident state,
Pacify water injecting tank flood pattern and passive water filling cooling system by low pressure, take reactor core decay heat out of, realizes wholly or largely
Fuel assembly involucrum keeps rodlike configuration state, core support plate to keep lower temperature, and fuel assembly and reactor core can be supported molten
Water in pond, lower head of pressure vessel will not dry up, i.e. realization fusant reactor core is detained, and prevent the migration reorientation of reactor core fusant
The appearance in cause lower head to be melted in lower head the case where.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram that nuclear reactor fusant reactor core is detained in the specific embodiment of the invention；
Fig. 2 is that structure when fuel assembly keeps complete under fusant reactor core retaining state in the specific embodiment of the invention is shown
It is intended to；
Fig. 3 is that structure when fuel assembly part collapses under fusant reactor core retaining state in the specific embodiment of the invention is shown
It is intended to.
Label and corresponding parts title in attached drawing:
1- lower head, 2- cylinder, 3- core support plate, 4- hanging basket, 5- shroud, 6- fuel assembly, 7- low pressure pacify water injecting tank,
The normally opened electric check valve of 8-, 9- first check-valve, 10- cooling water tank, 11- often close electric check valve, 12- second check-valve, 13-
Insulating layer, 14- insulating layer runner, 15- kickboard, 16- cut.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Nuclear reactor fusant reactor core as shown in Figure 1 to Figure 3 is detained passive cooling system, including pressure vessel, low
Pressure peace water injecting tank flood pattern, passive water filling cooling system and the structure in the heap in pressure vessel；The pressure is held
Device includes lower head 1, cylinder 2, upper cover, and the upper cover, lower head 1 are connected to the upper and lower ends of cylinder 2；Under wherein
End socket 1 is spherical in shape or elliposoidal, and structure includes core support plate 3, hanging basket 4, shroud 5, fuel assembly 6, the heap in the heap
Core support plate 3 is fixed on the inner wall of lower head 1, and the shroud 5 is fixed on the upper surface of core support plate 3, the hanging basket 4
Bottom end is connected with core support plate 3, is connected at the top of the top of hanging basket 4 and cylinder 2, and the shroud 5 is arranged in hanging basket 4, described
Fuel assembly 6 is arranged in shroud 5；Several through-holes are set in the core support plate 3；The low pressure pacifies water injecting tank flood pattern
For being filled the water into pressure vessel；The passive water filling cooling system is used for when core exit temperature is greater than 650 DEG C to guarantor
Warm laminar flow road water filling, cooling pressure container outside wall.
It includes two subsystems that the present embodiment mesolow, which pacifies water injecting tank flood pattern, and each subsystem includes low pressure peace note
Water tank, normally opened electric check valve, first check-valve 9, the low pressure peace water injecting tank 7 are connected with the cylinder 2, and low pressure pacifies water injecting tank
7 to setting gradually normally opened electric check valve 8, first check-valve 9 between cylinder 2.
Cooling water, pressurization gas are filled in the low pressure peace water injecting tank 7, under normal conditions, low pressure pacifies 7 internal pressurization of water injecting tank
The pressure of gas is 0.6~1MPa；When the cooling water emptying in low pressure peace water injecting tank 7, increase inside the low pressure peace water injecting tank 7
Calm the anger body pressure be 0.2~0.4MPa.
The pipeline internal diameter that the low pressure peace water injecting tank 7 is connected to cylinder 2 is 20~30mm.
The pressurization gas is nitrogen.
The passive water filling cooling system includes cooling water tank 10 outside the pressure vessel, often closes electric check valve
11, second check-valve 12, insulating layer 13, insulating layer runner 14, gas vent, the insulating layer 13 are located at outside pressure vessel, heat preservation
Insulating layer runner 14 is formed between layer 13 and the lateral wall of pressure vessel, the gas vent is located at the top of insulating layer runner 14,
The cooling water tank 10 is connected with insulating layer runner 14, and cooling water tank 10 is dynamic to Chang Guan electricity is set gradually between insulating layer runner 14
Shut-off valve 11, second check-valve 12.
13 integral coating of insulating layer is outside 2 lower part of cylinder and lower head 1.
The width of the insulating layer runner 14 is 50~200mm.
The gas vent is covered by kickboard 15.
In the present embodiment, when large break 16 occurs in reactor-loop, reactor coolant is largely lost, reactor core moisturizing
The cooling water of case, middle pressure safety injection tank and a low pressure safety injection tank is also lost with cut 16, when pressure vessel internal pressure is lower than
When low pressure safety injection tank nitrogen pressure, the nitrogen driving cooling water in also intact low pressure peace water injecting tank 7 enters pressure vessel.Low pressure
Pacify injection pressure very low between the small internal diameter waterflood-transmission line and 0.5MPa to 0.3MPa that water injecting tank 7 is arranged between 20mm to 30mm
Power guarantees that the water source of low pressure safety injection tank avoids directly causing to waste by 16 discharge pressure container of cut.Low pressure safety injection tank
Water filling maintains part reactor core water level, takes reactor core decay heat out of.
The vapor that reactor core generates is entered in containment by pressure vessel cut 16, and the vapor in containment passes through cold
But after device condensation is collected, cooling water tank 10 outside pressure vessel is flowed back into.
When core exit temperature is greater than 650 degrees Celsius, often closed outside the investment pressure vessel of electric check valve 11 by opening
The passive water filling cooling system in portion works, and the cooling water in cooling water tank 10 injects insulating layer runner 14 by gravity, opens
Cooling pressure container outer wall face is flooded in the kickboard 15 covered on 14 top vent of insulating layer runner, realization.In pressure vessel
The heat convection and thermally conductive entrance insulating layer runner 14 that coolant heat passes through pressure vessel wall surface.It is cold in insulating layer runner 14
But water causes density to reduce since temperature rises, with the biggish cooling water of the lower density of temperature in cooling water tank 10 and filling pipe
Density contrast is formed, gravitational difference and density contrast are collectively formed and enhance natural circulation in insulating layer runner 14.Insulating layer runner
The natural circulation enhanced in 14 is conducive to cooling pressure container outer wall face, takes more heats in pressure vessel out of.
When in insulating layer runner 14 cooling water and vapor flow up, from 14 top vent of insulating layer runner arrange
Out, water returns to containment sump, and vapor enters in containment, after the vapor in containment is collected by cooler condensation,
Flow back into cooling water tank 10.
In addition, when low pressure peace water injecting tank 7 in water consume it is complete after or reach pressure balance cannot to pressure vessel fill the water after, fire
Expect that component 6 is exposed again, clad temperature rapid increase, reactor core low melting material such as control rod, shroud 5 etc. melts first, falls
It falls in core support plate 3.Low melting point melt is entered in lower head 1 by runner hole to be cooled directly with water, on the vapor of generation
Cooling core support plate 3 and fuel assembly 6 are risen, therefore, a small amount of low melting point melt is deposited in 1 bottom of lower head.
After shroud 5 is completely melt, become direct radiation heat transfer between fuel assembly 6 and hanging basket 4, radiation heat transfer ability increases
By force, temperature rapid increase for hanging basket 4, while also enhancing the radiation heat transfer of hanging basket 4 Yu cylinder 2.In this way, the decay of fuel assembly 6
Heat from inside to outside, by fuel assembly 6 and fuel assembly 6, fuel assembly 6 and shroud 5, fuel assembly 6 and hanging basket 4, hanging basket 4 with
Cylinder 2 passes to cylinder 2 with radiation heat transfer, heat convection and thermally conductive heat exchange mode, then by heat convection and thermally conductive
Heat exchange mode, decay heat eventually enter into the cooling water in insulating layer runner 14, generate bubble formation steam water interface or water steams
Gas is discharged from 14 top vent of insulating layer runner.
Due to Core uncovering, the decay heat in fuel assembly 6 is taken out of by heat convection and radiation heat transfer, reactor core center
Fuel assembly 6 is since radiation heat transfer is less, and clad temperature highest may fail, therefore reactor core center may have part of fuel
The fusing of component 6 is collapsed, and forms reactor core fusion pool, as shown in Fig. 2.It is also possible to all fuel assemblies 6 and keeps full geometry
Structure, as shown in Fig. 3.Regardless of which kind of reactor core state, the decay heat of fuel assembly 6, reactor core fusion pool passes through heat-conducting mode
Core support plate 3 is heated, after core support plate 3 is exposed, the raised core support plate 3 of temperature radiates with pond in lower head 1
Water vapor after heat exchange, vapor flow upward through reactor fuel component 6 and reactor core molten bath outer surface, further cool down reactor core.
For the raised core support plate 3 of temperature also with exposed 1 inner surface radiation heat transfer of lower head, heat eventually enters into insulating layer runner 14
In flowing cooling water in.
When the heat that the decay heat of reactor fuel component 6, reactor core fusion pool is taken out of with passive water filling cooling system reaches
When balance, in reactor fuel component 6, reactor core fusion pool, unfused shroud 5, hanging basket 4, core plate and pressure vessel
The temperature of wall surface does not continue to rise, and reaches maximum temperature.With reactor fuel component 6, reactor core fusion pool decay heat gradually
It reduces, reactor fuel component 6, reactor core fusion pool, unfused shroud 5, hanging basket 4, core plate and internal pressure vessel walls
The temperature in face is gradually lowered.3 temperature of core support plate is lower can to support fuel assembly 6 and reactor core molten bath.With constantly, due to
The low pressure that low pressure pacifies 7 flood pattern of water injecting tank injects cooling water, so that remaining in lower head 1 has a small amount of water, guarantees in lower head 1
Do not dry up.
In conclusion nuclear reactor fusant reactor core of the present invention is detained passive cooling system, in the serious thing of nuclear reactor
Therefore under state, 7 flood pattern of water injecting tank and passive water filling cooling system are pacified by low pressure, take reactor core decay heat out of, realized complete
Portion or most of 6 involucrum of fuel assembly keep rodlike configuration state, core support plate 3 to keep lower temperature, can support fuel
Water in component 6 and reactor core molten bath, lower head of pressure vessel 1 will not dry up, i.e. realization fusant reactor core is detained, and prevent reactor core molten
Melt object migration and resets the case where causing lower head 1 to be melted in lower head 1 appearance.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (9)
1. nuclear reactor fusant reactor core is detained passive cooling system, which is characterized in that including pressure vessel, low pressure peace water filling
Case flood pattern, passive water filling cooling system and the structure in the heap in pressure vessel；
The pressure vessel includes lower head (1), cylinder (2), upper cover, and the upper cover, lower head (1) are connected to cylinder
The upper and lower ends of body (2)；Wherein lower head (1) is spherical in shape or elliposoidal,
Structure includes core support plate (3), hanging basket (4), shroud (5), fuel assembly (6), the core support plate in the heap
(3) it is fixed on the inner wall of lower head (1), the shroud (5) is fixed on the upper surface of core support plate (3), the hanging basket (4)
Bottom end be connected with core support plate (3), be connected at the top of the top of hanging basket (4) and cylinder (2), the shroud (5), which is arranged, is hanging
In basket (4), fuel assembly (6) setting is in shroud (5)；Several through-holes are set on the core support plate (3)；
The low pressure peace water injecting tank flood pattern into pressure vessel for filling the water；
The passive water filling cooling system is used for when core exit temperature is greater than 650 DEG C, cooling pressure container outside wall.
2. nuclear reactor fusant reactor core according to claim 1 is detained passive cooling system, which is characterized in that described
Low pressure peace water injecting tank flood pattern includes low pressure peace water injecting tank (7), normally opened electric check valve (8), first check-valve (9), described
Low pressure peace water injecting tank (7) is connected with the cylinder (2), and it is normally opened electronic to setting gradually between cylinder (2) that low pressure pacifies water injecting tank (7)
Shut-off valve (8), first check-valve (9).
3. nuclear reactor fusant reactor core according to claim 2 is detained passive cooling system, which is characterized in that described
Low pressure, which is pacified, fills cooling water, pressurization gas in water injecting tank (7), under normal conditions, low pressure pacifies the pressure of water injecting tank (7) internal pressurization gas
Power is 0.6~1MPa；When the cooling water emptying in low pressure peace water injecting tank (7), the low pressure pacifies water injecting tank (7) internal pressurization gas
The pressure of body is 0.2~0.4MPa.
4. nuclear reactor fusant reactor core according to claim 2 is detained passive cooling system, which is characterized in that described
The pipeline internal diameter that low pressure peace water injecting tank (7) is connected to cylinder (2) is 20~30mm.
5. nuclear reactor fusant reactor core according to claim 3 is detained passive cooling system, which is characterized in that described
Pressurization gas is nitrogen.
6. nuclear reactor fusant reactor core according to claim 1 is detained passive cooling system, which is characterized in that described
Passive water filling cooling system includes cooling water tank (10) outside the pressure vessel, often closes electric check valve (11), second
Check-valves (12), insulating layer (13), insulating layer runner (14), gas vent, the insulating layer (13) are located at outside pressure vessel, heat preservation
Insulating layer runner (14) are formed between layer (13) and the lateral wall of pressure vessel, the gas vent is located at insulating layer runner (14)
Top, the cooling water tank (10) are connected with insulating layer runner (14), cooling water tank (10) between insulating layer runner (14) according to
Electric check valve (11), second check-valve (12) are often closed in secondary setting.
7. nuclear reactor fusant reactor core according to claim 1 is detained passive cooling system, which is characterized in that described
Insulating layer (13) integral coating cylinder (2) lower part and lower head (1) outside.
8. nuclear reactor fusant reactor core according to claim 6 is detained passive cooling system, which is characterized in that described
The width of insulating layer runner (14) is 50~200mm.
9. nuclear reactor fusant reactor core according to claim 6 is detained passive cooling system, which is characterized in that described
Gas vent is covered by kickboard (15).
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| CN201811069319.4A CN109147969B (en) | 2018-09-13 | 2018-09-13 | Nuclear reactor molten material core retention passive cooling system |
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| CN201811069319.4A CN109147969B (en) | 2018-09-13 | 2018-09-13 | Nuclear reactor molten material core retention passive cooling system |
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Cited By (10)
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| CN109948296A (en) * | 2019-04-09 | 2019-06-28 | 中国核动力研究设计院 | Fusant is cooling in a kind of lower head is detained efficiency evaluation method |
| CN110020480A (en) * | 2019-04-09 | 2019-07-16 | 中国核动力研究设计院 | The judgement of fusion pool structural stratification and the analysis method based on risk-oriented in lower head |
| CN110415840A (en) * | 2019-08-06 | 2019-11-05 | 中国核动力研究设计院 | A kind of method of adherence pressure external container critical heat flux density |
| CN111503327A (en) * | 2020-03-30 | 2020-08-07 | 中广核研究院有限公司 | Floating valve device, working method thereof and pressure container |
| CN111883269A (en) * | 2020-08-12 | 2020-11-03 | 中国核动力研究设计院 | System and method for cooling stagnant passive in molten material reactor of floating nuclear power station |
| CN111899901A (en) * | 2020-08-12 | 2020-11-06 | 中国核动力研究设计院 | Passive and active combined molten material in-pile retention cooling system |
| CN111933316A (en) * | 2020-08-12 | 2020-11-13 | 三门核电有限公司 | Method for efficiently cooling reactor cavity area of pressurized water reactor |
| CN112201372A (en) * | 2020-10-16 | 2021-01-08 | 上海核工程研究设计院有限公司 | Method for realizing retention of molten material in reactor core of nuclear reactor |
| CN113205893A (en) * | 2021-04-02 | 2021-08-03 | 中国核电工程有限公司 | Arrangement method and system for reactor core submerged pool of nuclear power station |
| CN114496317A (en) * | 2022-02-18 | 2022-05-13 | 中国核动力研究设计院 | Multifunctional integrated reactor pressure vessel heat preservation device |
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| CN109948296A (en) * | 2019-04-09 | 2019-06-28 | 中国核动力研究设计院 | Fusant is cooling in a kind of lower head is detained efficiency evaluation method |
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| CN111933316A (en) * | 2020-08-12 | 2020-11-13 | 三门核电有限公司 | Method for efficiently cooling reactor cavity area of pressurized water reactor |
| CN111883269B (en) * | 2020-08-12 | 2022-04-22 | 中国核动力研究设计院 | System and method for cooling stagnant passive in molten material reactor of floating nuclear power station |
| CN111933316B (en) * | 2020-08-12 | 2023-06-02 | 三门核电有限公司 | Method for efficiently cooling reactor cavity area of pressurized water reactor |
| CN112201372A (en) * | 2020-10-16 | 2021-01-08 | 上海核工程研究设计院有限公司 | Method for realizing retention of molten material in reactor core of nuclear reactor |
| CN113205893A (en) * | 2021-04-02 | 2021-08-03 | 中国核电工程有限公司 | Arrangement method and system for reactor core submerged pool of nuclear power station |
| CN114496317A (en) * | 2022-02-18 | 2022-05-13 | 中国核动力研究设计院 | Multifunctional integrated reactor pressure vessel heat preservation device |
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| CN109147969B (en) | 2020-02-21 |
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