WO2011058817A1 - 非常用炉心冷却装置及び原子炉設備 - Google Patents
非常用炉心冷却装置及び原子炉設備 Download PDFInfo
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- WO2011058817A1 WO2011058817A1 PCT/JP2010/065865 JP2010065865W WO2011058817A1 WO 2011058817 A1 WO2011058817 A1 WO 2011058817A1 JP 2010065865 W JP2010065865 W JP 2010065865W WO 2011058817 A1 WO2011058817 A1 WO 2011058817A1
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- cooling
- reactor
- cooling water
- building
- containment vessel
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/024—Supporting constructions for pressure vessels or containment vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
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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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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0054—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for nuclear applications
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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
Definitions
- the present invention provides an emergency core cooling device that supplies cooling water to a nuclear reactor and its containment vessel and cools them when a cooling water loss accident in which piping for circulating the primary cooling water to the reactor breaks occurs, and
- the present invention relates to a nuclear reactor facility equipped with this emergency core cooling device.
- FIG. 11 is an overall configuration diagram showing a reactor cooling system including a conventional emergency core cooling device.
- a pressurized water reactor 002 and a steam generator 003 are stored in a reactor containment vessel 001.
- the pressurized water reactor 002 and the steam generator 003 are stored in the reactor containment vessel 001.
- a fuel replacement water pit 007 is provided in a reactor containment vessel 001.
- cooling water in the fuel replacement water pit 007 is supplied to a pressurized water reactor by a pump 008.
- a reactor cooling path 009 for supplying and cooling to 002 is provided, and a reactor containment cooling path 012 for spraying cooling water to the reactor containment vessel 001 using the injection nozzle 011 by the pump 010 and cooling is provided. ing.
- the reactor containment vessel cooling path 012 is provided with a heat exchanger 013, and a secondary cooling water circulation path 014 and a pump for circulating the secondary cooling water to the heat exchanger 013 to cool the primary cooling water. 015 is provided. Further, the secondary cooling water circulation path 014 is provided with a heat exchanger 016, and a seawater through-flow path 017 and a pump 018 for cooling the secondary cooling water through the sea water through the heat exchanger 016 are provided. Yes. Further, the secondary cooling is branched from the secondary cooling water circulation path 014 to the auxiliary equipment such as the cooling water pump 006 in the reactor containment vessel 001 or the auxiliary equipment such as the pump 010 outside the reactor containment vessel 001. Auxiliary equipment cooling paths 019 and 020 for supplying and cooling water are provided.
- the pump 015 is driven, and the secondary cooling water is supplied to the auxiliary equipment (pumps 006 and 010) through the auxiliary equipment cooling paths 019 and 020 to be cooled.
- the secondary cooling water circulating through the secondary cooling water circulation path 014 is cooled by driving the pump 018 and supplying seawater to the heat exchanger 016 through the seawater flow path 017.
- the pump 008 is driven, and the primary cooling water of the fuel replacement water pit 007 is supplied to the pressurized water reactor 002 through the reactor cooling path 009 to be cooled, and the pump 010 is turned on. It is driven, supplied to the injection nozzle 011 through the reactor containment vessel cooling path 012, and dispersed and supplied to the reactor containment vessel 001.
- the secondary cooling water is circulated and the primary cooling water is cooled by the heat exchanger 013, and the secondary cooling water is cooled by the heat exchanger 016 through the seawater.
- the cooling system that operates during normal operation of the reactor equipment and the cooling system that operates during emergency operation are combined. Therefore, when there is a problem with the reactor cooling system during normal operation and a cooling water loss accident occurs, the reactor cooling system cannot be operated during emergency operation. Therefore, generally, a plurality of reactor cooling systems are provided. Therefore, there is a problem that the equipment is increased in size and the equipment cost and the maintenance cost are increased.
- the present invention solves the above-described problems, and an object thereof is to provide an emergency core cooling device and a reactor facility that can be reduced in size and cost and can improve safety and reliability. .
- an emergency core cooling apparatus is a reactor facility in which a nuclear reactor is disposed in a reactor containment vessel, and in an emergency, cooling water is supplied to the reactor containment vessel or the reactor.
- a cooling water circulation path that supplies and circulates the cooling water, and a cooling device that air-cools the cooling water that flows through the cooling water circulation path outside the reactor containment vessel. is there.
- a building is installed outside the reactor containment vessel, and the cooling water circulation path enters the building from the inside of the reactor containment vessel and again enters the reactor containment vessel.
- the cooling device has a returning external path, and the cooling device cools the cooling water flowing through the external path by air.
- a plurality of sets of the cooling water circulation path and the cooling device are arranged in the building.
- the cooling water circulation path includes a spraying path for spraying cooling water in a fuel replacement water pit provided in the reactor containment vessel into the reactor containment vessel, and the fuel.
- a duct extending in the vertical direction inside the building and having a building lower suction port and a building upper discharge port is provided, and the cooling device is provided in the duct. It is characterized by being provided.
- the cooling device includes a plurality of thin tubes that are branched from the cooling water circulation path and arranged so as to cross the inside of the duct.
- the cooling device includes an inlet header into which cooling water enters from the cooling water circulation path, an outlet header for discharging cooling water to the cooling water circulation path, and a ring that connects the inlet header and the outlet header.
- a plurality of the thin tubes connected so as to form a shape, and the building is disposed in any one of a space portion surrounded by the inlet header, the outlet header, and the thin tubes and a space outside the thin tubes.
- a lower suction port communicates with the other space portion, and a discharge port provided above the duct building communicates with the other space portion.
- a fan is provided that sends air that is sucked from the building lower suction port and rises up the duct and cools the cooling water flowing through the narrow pipe to the building upper discharge port side. It is a feature.
- a lower foundation plate is installed on the ground, an upper foundation plate is disposed on the lower foundation plate via a seismic isolation device, and the reactor containment vessel is placed on the upper foundation plate And the said building is installed,
- the said building lower inlet provided in the ground surface part vicinity and the said duct are connected via the space part by which the said seismic isolation apparatus is arrange
- the emergency core cooling device of the present invention is characterized in that the building lower suction port is provided between the upper foundation plate or the building and the lower foundation plate.
- the building is installed so as to surround the periphery of the reactor containment vessel, and a plurality of the ducts are provided at equal intervals in the circumferential direction on the outer periphery of the building. It is characterized by.
- the reactor equipment of the present invention includes a reactor containment vessel, a reactor disposed in the reactor containment vessel, a reactor auxiliary machine, and circulating cooling water to the reactor auxiliary machine at normal times.
- Auxiliary equipment cooling path for cooling, a cooling device for normal time for cooling the cooling water flowing through the auxiliary equipment cooling path outside the reactor containment vessel, and primary to the reactor containment vessel or the reactor in an emergency A reactor cooling path that circulates and cools cooling water; and an emergency cooling device that air-cools the primary cooling water flowing through the reactor cooling path outside the reactor containment vessel.
- cooling water is supplied to the reactor containment vessel or the reactor in an emergency and the coolant is collected and circulated, and cooled outside the reactor containment vessel.
- the building is installed outside the reactor containment vessel, and the cooling water circulation route enters the building from the inside of the reactor containment vessel and returns to the reactor containment vessel again.
- the cooling water flowing through this external path is air-cooled by the cooling device, so the cooling water flowing through the cooling water circulation path is air-cooled by the cooling device outside the reactor containment vessel, and the cooling water is efficiently Can be cooled.
- a plurality of cooling water circulation paths and cooling devices are arranged in the building, so that one cooling water circulation path or cooling device failure may cause other cooling water circulation paths or cooling devices.
- the device can be activated and safety can be improved.
- the emergency core cooling device of the present invention as a cooling water circulation path, a spray path for spraying the cooling water in the fuel replacement water pit provided in the reactor containment vessel into the reactor containment vessel, and the fuel replacement A supply path for supplying cooling water in the water pit into the reactor, a recovery path for recovering the cooling water sprayed in the reactor containment vessel and the cooling water supplied in the reactor to the fuel replacement water pit, and Therefore, depending on the accident situation of the reactor, it is possible to select whether to spray cooling water into the reactor containment vessel, supply it into the reactor, or both, and improve safety. it can.
- a duct extending in the vertical direction inside the building and having a building lower suction port and a building upper discharge port is provided, and the cooling device is provided in the duct.
- the air flowing in the duct from the lower suction port is sent to the cooling device, where heat exchange with the cooling water is performed, and the hot air is discharged to the outside from the upper discharge port of the building. Water can be cooled efficiently.
- the cooling device is provided with a plurality of thin tubes that are branched from the cooling water circulation path and arranged so as to cross the inside of the duct. Heat exchange with water is performed, and the cooling water can be efficiently cooled by air.
- an inlet header into which cooling water enters from the cooling water circulation path, an outlet header for discharging cooling water to the cooling water circulation path, and an inlet header and an outlet header form a ring shape.
- a plurality of narrow tubes connected to each other, and a suction port provided below the duct building communicates with the narrow tubes, and an upper discharge port of the duct is formed in a space surrounded by the inlet header, the outlet header, and the narrow tubes Therefore, air is sent from the outside to a plurality of capillaries in the shape of a ring, and the air in the heat-exchanged internal space is exhausted upward.
- the cooling device can be downsized.
- the fan is driven because the cooling air which is sucked from the building lower suction port and rises the duct and cools the cooling water flowing through the narrow tube is sent to the building upper discharge side.
- the air flow generated by this the air exchanged with the cooling water flowing through the plurality of thin tubes is discharged upward or downward from the internal space, and the heat exchange efficiency can be improved.
- the lower foundation plate is installed on the ground
- the upper foundation plate is disposed on the lower foundation plate via the seismic isolation device
- the reactor containment vessel and the upper foundation plate are arranged. Since the building is installed and the building's lower suction port and duct located near the surface part are communicated with each other through the space where the seismic isolation device is placed, the air in the vicinity of the ground surface is connected to the space of the seismic isolation device from the building's lower suction port.
- the cooler air can be sent to the cooling device through the space of the seismic isolation device by sending it to the cooling device through the duct from here. Therefore, the shielding property can be improved.
- the lower building inlet is provided between the upper foundation plate or the building and the lower foundation plate, it is not necessary to separately provide the lower building inlet in the building, etc. Can be made possible.
- the building is installed so as to surround the reactor containment vessel, and a plurality of ducts are provided at equal intervals in the circumferential direction on the outer periphery of the building.
- the auxiliary equipment cooling path for circulating and cooling the cooling water to the reactor auxiliary equipment at normal times and the cooling water flowing through the auxiliary equipment cooling path outside the reactor containment vessel Cooling system for normal time for water cooling, reactor cooling path for circulating primary cooling water to the reactor containment vessel or reactor in an emergency, and primary flow through the reactor cooling path outside the reactor containment vessel
- An emergency cooling device for cooling the cooling water with air is provided. Therefore, safety and reliability can be improved by separately providing a normal cooling system and an emergency cooling system in the reactor facility. In addition, by using an air cooling system as an emergency cooling system, it is possible to reduce the size and cost of the apparatus.
- FIG. 1 is an overall configuration diagram showing a reactor cooling system including an emergency core cooling device according to a first embodiment of the present invention.
- FIG. 2 is a schematic configuration diagram illustrating a reactor facility in which the emergency core cooling apparatus according to the first embodiment is mounted.
- FIG. 3 is a schematic view showing an air duct in the cooling device for primary cooling water.
- FIG. 4 is a schematic diagram illustrating a cooling device for primary cooling water.
- FIG. 5 is a plan view of a cooling device for primary cooling water. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5 showing a longitudinal section of the cooling device for primary cooling water.
- FIG. 7 is a schematic configuration diagram of a nuclear power plant having the emergency core cooling device of the first embodiment.
- FIG. 1 is an overall configuration diagram showing a reactor cooling system including an emergency core cooling device according to a first embodiment of the present invention.
- FIG. 2 is a schematic configuration diagram illustrating a reactor facility in which the emergency core cooling apparatus according to the first embodiment is mounted
- FIG. 8 is a schematic configuration diagram showing a nuclear reactor facility having an emergency core cooling device according to a second embodiment of the present invention.
- FIG. 9 is a schematic plan view in which a part of the reactor facility according to the second embodiment is cut away.
- FIG. 10 is a cross-sectional view taken along the line XX of FIG. 9 showing the duct in which the cooling device is arranged.
- FIG. 11 is an overall configuration diagram showing a reactor cooling system including a conventional emergency core cooling device.
- FIG. 1 is an overall configuration diagram showing a reactor cooling system including an emergency core cooling apparatus according to a first embodiment of the present invention
- FIG. 2 is a nuclear reactor facility equipped with the emergency core cooling apparatus according to the first embodiment
- FIG. 3 is a schematic diagram showing an air duct in a cooling device for primary cooling water
- FIG. 4 is a schematic diagram showing a cooling device for primary cooling water
- FIG. 5 is a plan view of the cooling device for primary cooling water.
- FIG. 6 is a sectional view taken along line VI-VI in FIG. 5 showing a longitudinal section of a cooling device for primary cooling water
- FIG. 7 is a schematic configuration diagram of a nuclear power plant having an emergency core cooling device according to the first embodiment. .
- the nuclear reactor of Example 1 uses light water as a reactor coolant and a neutron moderator, and produces high-temperature and high-pressure water that does not boil over the entire core, and sends this high-temperature and high-pressure water to a steam generator to generate steam by heat exchange.
- This is a pressurized water reactor (PWR) that sends this steam to a turbine generator to generate electricity.
- PWR pressurized water reactor
- a pressurized water reactor 12 and a steam generator 13 are stored in the reactor containment vessel 11.
- the reactor 12 and the steam generator 13 are connected via cooling water pipes 14 and 15, a pressurizer 16 is provided in the cooling water pipe 14, and a cooling water pump 15 a is provided in the cooling water pipe 15. .
- light water is used as the moderator and primary cooling water (cooling material), and the primary cooling system is maintained at a high pressure of about 150 to 160 atm by the pressurizer 16 in order to suppress boiling of the primary cooling water in the core. You are in control.
- the pressurized water reactor 12 light water is heated as the primary cooling water by the low-enriched uranium or MOX as the fuel (nuclear fuel), and the high-temperature primary cooling water is cooled in a state maintained at a predetermined high pressure by the pressurizer 16. It is sent to the steam generator 13 through the water pipe 14. In the steam generator 13, heat exchange is performed between the high-pressure and high-temperature primary cooling water and the secondary cooling water, and the cooled primary cooling water is returned to the pressurized water reactor 12 through the cooling water pipe 15.
- the steam generator 13 is connected to a steam turbine 17 via a cooling water pipe 18, and the steam turbine 17 includes a high pressure turbine 19 and a low pressure turbine 20, and a generator 21 is connected thereto. Further, a moisture separation heater 22 is provided between the high pressure turbine 19 and the low pressure turbine 20, and a cooling water branch pipe 23 branched from the cooling water pipe 18 is connected to the moisture separation heater 22. On the other hand, the high pressure turbine 19 and the moisture separation heater 22 are connected by a low temperature reheat pipe 24, and the moisture separation heater 22 and the low pressure turbine 20 are connected by a high temperature reheat pipe 25.
- the low-pressure turbine 20 of the steam turbine 17 has a condenser 26, and a condenser pipe 26 and a drain pipe 28 for supplying and discharging cooling water (for example, seawater) are connected to the condenser 26.
- the condenser 26 is connected to a deaerator 30 through a cooling water pipe 29, and a condensate pump 31 and a low-pressure feed water heater 32 are provided in the cooling water pipe 29.
- the deaerator 30 is connected to the steam generator 13 via a cooling water pipe 33, and a water supply pump 34 and a high-pressure feed water heater 35 are provided in the cooling water pipe 33.
- the steam generated by performing heat exchange with the high-pressure and high-temperature primary cooling water in the steam generator 13 is sent to the steam turbine 17 (from the high-pressure turbine 19 to the low-pressure turbine 20) through the cooling water pipe 18, and this steam is generated. Then, the steam turbine 17 is driven to generate power by the generator 21. At this time, the steam from the steam generator 13 drives the high pressure turbine 19, and then the moisture contained in the steam is removed and heated by the moisture separator / heater 22, and then the low pressure turbine 20 is driven.
- the steam that drives the steam turbine 17 is cooled by the condenser 26 to become condensed water, heated by the low-pressure feed water heater 32 by, for example, the low-pressure steam extracted from the low-pressure turbine 20, and dissolved by the deaerator 30. After impurities such as oxygen and uncondensed gas (ammonia gas) are removed, the high pressure feed water heater 35 heats the high pressure steam extracted from, for example, the high pressure turbine 19 and then returns to the steam generator 13.
- an auxiliary machine cooling system A that circulates and cools primary cooling water to the reactor auxiliary machine at normal time
- an emergency reactor cooling system B for circulating and cooling primary cooling water to the reactor containment vessel 11 and the pressurized water reactor 12 is provided independently.
- the first building 50 is installed so as to surround the outer peripheral side of the reactor containment vessel 11, and the second building 40 is installed adjacent to the first building 50.
- the reactor auxiliary equipment includes not only the cooling water pump 15a described above but also a pump, a heat exchanger, etc. (not shown).
- the first building 50 is provided with a residual heat removal cooling path 42 that circulates the primary cooling water flowing through the cooling water pipes 14 and 15 (see FIG. 7) using the pump 41.
- the residual heat removal cooling path 42 is provided with a residual heat removal heat exchanger (cooling device for normal use) 43, and secondary cooling water is supplied to the second building 40 with respect to the residual heat removal heat exchanger 43.
- a secondary cooling water circulation path 44 and a pump 45 for circulating and cooling the primary cooling water are provided.
- the secondary cooling water circulation path 44 is provided with a reactor auxiliary machine cooling water heat exchanger (normal shutdown cooling device) 46, and seawater is supplied to the reactor auxiliary machine cooling water heat exchanger 46.
- a seawater flow passage 47 and a pump 48 are provided for cooling the secondary cooling water through the water.
- a plurality of reactor cooling systems B are arranged in the first building 50 (four in the embodiment).
- the reactor cooling system B supplies a primary cooling water to the reactor containment vessel 11 and the pressurized water reactor 12 in an emergency, and collects and circulates the primary cooling water for circulation (reactor cooling path) 51.
- a cooling device (emergency cooling device) 52 for air-cooling the primary cooling water flowing in the cooling water circulation path 51 outside the reactor containment vessel 11.
- the reactor cooling system B (cooling water circulation path 51 and cooling device 52) constitutes an emergency core cooling device (ECCS: Emergency Core Cooling System) of the present invention and a containment vessel spray device.
- ECCS Emergency Core Cooling System
- a fuel replacement water pit 61 is provided in the reactor containment vessel 11 below the pressurized water reactor 12.
- a spraying path 62 is provided that extends from the fuel replacement water pit 61 through the first external building 50 to the reactor containment vessel 11 and extends to the upper side of the pressurized water reactor 12.
- the spray path 62 is provided with a supply pump 63 and a motorized valve 64 at an intermediate part, and a spray pipe 65 having a large number of injection nozzles 65a is connected to the tip part.
- the primary cooling water in the fuel replacement water pit 61 is sent to the spray pipe 65 through the spray path 62, and the primary cooling water is sprayed into the reactor containment vessel 11 by the numerous injection nozzles 65a.
- the inside of the reactor containment vessel 11 can be cooled.
- a supply path 66 is provided that extends from the fuel replacement water pit 61 through the first external building 50 to the reactor containment vessel 11 and extends to the pressurized water reactor 12.
- the supply path 66 is provided with a supply pump 67, a motor operated valve 68, and check valves 69 and 70 at an intermediate portion, and the tip is connected to the core tank of the pressurized water reactor 12.
- the primary cooling water in the fuel replacement water pit 61 can be sent to the core tank of the pressurized water reactor 12 through the supply path 66 to cool the core of the pressurized water reactor 12.
- a circulation path 71 is provided which extends from the fuel replacement water pit 61 through the first external building 50 to the reactor containment vessel 11 again and extends to the fuel replacement water pit 61.
- the circulation path 71 is provided with a supply pump 72 and a motorized valve 73 at an intermediate portion.
- the cooling water pipes 14 and 15 of the pressurized water reactor 12 are provided with an emergency extraction path 74 for extracting the primary cooling water to the fuel replacement water pit 61.
- the emergency extraction path 74 is provided with a motorized valve 75 at an intermediate portion.
- the motor-operated valve 75 when the motor-operated valve 75 is opened, the primary cooling water flowing through the cooling water pipes 14 and 15 can be extracted to the fuel replacement water pit 61 through the emergency extraction path 74. At this time, when the supply pump 72 is driven, the primary cooling water in the fuel replacement water pit 61 can be returned again to the fuel replacement water pit 61 through the circulation path 71.
- the primary cooling water which is sent to the spray pipe 65 through the spraying path 62 and sprayed into the reactor containment vessel 11 from the numerous injection nozzles 65a, and is sent to the reactor core tank of the pressurized water reactor 12 through the supply path 66.
- a recovery path for recovering the primary cooling water leaked into the furnace containment vessel 11 to the fuel replacement water pit 61 is provided. Although not shown, this recovery path is a floor surface where the primary cooling water accumulated in the reactor containment vessel 11 flows into the fuel replacement water pit 61.
- the cooling water circulation path 51 includes a spraying path 62, a supply path 66, a circulation path 71, and a recovery path.
- the cooling water circulation path 51 (spreading path 62, supply path 66, circulation path 71) is set by an external path 53 that enters the first building 50 from the reactor containment vessel 11 and returns to the reactor containment vessel 11.
- a cooling device 52 is provided for the external path 53.
- a first duct 81 is formed along the horizontal direction, and a lower suction port (building lower suction port) 82 is formed at one end in the longitudinal direction.
- a second duct 83 is formed along the vertical direction, and an upper discharge port (building upper discharge port) 84 is formed at one end (upper end) in the longitudinal direction.
- the other end part in the 1st duct 81 and the other end part (lower end part) in the 2nd duct 83 are connected so that it may cross substantially orthogonally, and the cooling device 52 is arrange
- a third duct 85 that extends downward from the communication portion of the first duct 81 and the second duct 83 and then bends upward and communicates with the second duct 83 above the cooling device 52. Is formed.
- Example 1 the first duct 81, the second duct 83, and the third duct 85 constitute the duct of the present invention.
- the inlet headers 91a, 91b, 91c, 91d and the outlet headers 92a, 92b, 92c, 92d are arranged at predetermined intervals, and these form four sets of squares.
- the inlet headers 91a, 91b, 91c, and 91d facing each other and the outlet headers 92a, 92b, 92c, and 92d are connected by a plurality of thin tubes 93a, 93b, 93c, and 93d.
- the inlet headers 91a, 91b, 91c, 91d and the outlet headers 92a, 92b, 92c, 92d have a hollow shape and communicate with each other by a plurality of thin tubes 93a, 93b, 93c, 93d.
- the narrow tubes 93a, 93b, 93c, and 93d are arranged side by side along the horizontal direction, and are arranged side by side in a staggered manner in the vertical direction.
- the inlet headers 91a, 91b, 91c, 91d and the outlet headers 92a, 92b, 92c, 92d have inlet portions 94a, 94b connected to the cooling water circulation path 51 (spreading path 62, supply path 66, circulation path 71). , 94c, 94d and outlet portions 95a, 95b, 95c, 95d.
- the inlet headers 91a, 91b, 91c, 91d In addition, in the space portion 96 surrounded by the inlet headers 91a, 91b, 91c, 91d, the outlet headers 92a, 92b, 92c, 92d and the plurality of narrow tubes 93a, 93b, 93c, 93d, the inlet headers 91a, 91b, 91c, The electric motor 98 is supported by four stays 97 extending from 91d and the outlet headers 92a, 92b, 92c, and 92d. The drive shaft extending upward and downward from the electric motor 98 allows air in the space portion 96 to flow upward. Fans 99 and 100 sent out downward are consolidated.
- the rectangular guides 102 and 103 are fixed to the upper and lower ends of the inlet headers 91a, 91b, 91c, and 91d and the outlet headers 92a, 92b, 92c, and 92d.
- the cooling device 52 configured as described above is arranged in the communication portion of the first duct 81, the second duct 83, and the third duct 85, thereby allowing the thin tubes 93 (93 a, 93 b, 93c, 93d) communicates with the first duct 81 (lower suction port 82).
- the second duct 83 (above the space 96 surrounded by the inlet header 91 (91a, 91b, 91c, 91d), the outlet header 92 (92a, 92b, 92c, 92d) and the plurality of thin tubes 93 (upward)
- the discharge port 84 communicates, and the third duct 85 communicates below the space 96.
- the narrow pipe 93 of the cooling water circulation path 51 is arranged so as to cross the first duct 81.
- auxiliary equipment cooling system A is used as shown in FIG. That is, when the reactor is stopped normally, the pump 41 is driven, and the primary cooling water of the cooling water pipes 14 and 15 is supplied to the residual heat removal heat exchanger 43 through the residual heat removal cooling path 42 to be cooled. At this time, the pump 45 is driven, and the secondary cooling water is supplied to the residual heat removal heat exchanger 43 through the secondary cooling water circulation path 44, thereby cooling the primary cooling water circulating in the residual heat removal cooling path 42.
- the pump 48 is driven, and the seawater is supplied to the reactor auxiliary machine coolant heat exchanger 46 through the seawater flow path 47, thereby cooling the secondary coolant circulating in the secondary coolant circulation path 44.
- the reactor cooling system B is used as shown in FIG. That is, in the case of a large fracture LOCA (Loss of Coolant Accident), the supply pump 63 is driven, and the primary cooling water stored in the fuel replacement water pit 61 is passed through the spray path 62 to the spray pipe 65.
- the primary cooling water is sprayed from the large number of spray nozzles 65 a attached to the spray pipe 65 into the reactor containment vessel 11. Then, this primary cooling water will be sprayed against a large amount of steam generated in the reactor containment vessel 11, where a large amount of energy is taken away and the inside of the reactor containment vessel 11 is cooled. It drops at a high temperature and returns to the fuel replacement water pit 61 through the recovery path. Therefore, the energy released into the reactor containment vessel 11 can be taken away by the dispersed primary cooling water, and the integrity of the reactor containment vessel 11 can be maintained.
- LOCA Large fracture LOCA
- the supply pump 67 is driven, and the primary cooling water stored in the fuel replacement water pit 61 is sent to the core tank of the pressurized water reactor 12 through the supply path 66. Then, the primary cooling water takes away the decay heat of the core generated in the pressurized water reactor 12, cools the inside of the pressurized water reactor 12 and then flows out to the outside, and passes through the recovery path. The fuel replacement water pit 61 is returned. Therefore, the decay heat of the pressurized water reactor 12 can be taken away by the supplied primary cooling water, and the cooling of the fuel in the pressurized water reactor 12 can be maintained.
- the primary containment water cooled by the reactor containment vessel 11 and the pressurized water reactor 12 is cooled by the cooling device 52. is doing. That is, the primary cooling water that has become high temperature by cooling the reactor containment vessel 11 and the pressurized water reactor 12 is continuously air-cooled by the cooling device 52 when flowing through the spraying path 62 and the supply path 66.
- the primary cooling water taken from the fuel replacement water pit 61 flows through the spraying path 62 and the supply path 66, the primary cooling water exits the reactor containment vessel 11 and enters the building 50. It reaches the cooling device 52. In this cooling device 52, the primary cooling water enters the inlet header 91 (91a, 91b, 91c, 91d), passes through a large number of thin tubes 93 (93a, 93b, 93c, 93d), and the outlet header 92 (92a, 92b, 92c, 92d).
- the primary cooling water that has been heated to a high temperature by cooling the reactor containment vessel 11 and the pressurized water reactor 12 is continuously air-cooled by the cooling device 52, and the reactor containment vessel 11 and the pressurized water reactor 12 are thus cooled. Can be properly cooled.
- the motor-operated valve 75 is opened, and the primary cooling water flowing through the cooling water pipes 14, 15 passes through the emergency extraction path 74 to the fuel replacement water pit 61. To extract.
- the supply pump 72 is driven, and the primary cooling water stored in the fuel replacement water pit 61 is returned to the fuel replacement water pit 61 through the circulation path 71.
- the cooling device 52 is provided in the circulation path 71 as described above, the primary cooling water that has been heated to a high temperature by cooling the pressurized water reactor 12 is supplied from the fuel replacement water pit 61 to the circulation path. When it flows through 71, it is continuously cooled by the cooling device 52.
- the pressurized water reactor 12 is arranged in the reactor containment vessel 11, and the reactor containment vessel 11 or the pressurized water reactor 12 is provided in an emergency.
- a cooling water circulation path 51 that supplies primary cooling water and collects and circulates the primary cooling water, and a cooling device 52 that air-cools the primary cooling water flowing through the cooling water circulation path 51 outside the reactor containment vessel 11 are provided. ing.
- the cooling device 52 that cools the primary cooling water supplied to the reactor containment vessel 11 or the pressurized water reactor 12 is provided outside the reactor containment vessel 11 so as to be air-cooled. The cost can be reduced, and safety and reliability can be improved.
- the first building 50 is installed outside the reactor containment vessel 11 and enters the first building 50 from the reactor containment vessel 11 as the cooling water circulation path 51.
- An external path 53 returning to the reactor containment vessel 11 is provided again, and the cooling water 52 cools the primary cooling water flowing through the external path 53 with air. Therefore, the primary cooling water flowing through the cooling water circulation path 51 is air-cooled by the cooling device 52 outside the reactor containment vessel 11, and the primary cooling water can be efficiently cooled.
- a plurality of sets of the cooling water circulation path 51 and the cooling device 52 are arranged in the first building 50. Therefore, the other cooling water circulation path 51 and the cooling device 52 can be operated in response to a failure of one cooling water circulation path 51 and the cooling device 52 or during maintenance work, thereby improving safety.
- the cooling water circulation path 51 is used to spray the primary cooling water in the fuel replacement water pit 61 provided in the reactor containment vessel 11 into the reactor containment vessel 11.
- a path 62, a supply path 66 for supplying the primary cooling water 61 in the fuel replacement water pit 61 to the pressurized water reactor 12, and the primary cooling water sprayed in the reactor containment vessel 11 and the pressurized water reactor 12 And a recovery path for recovering the primary cooling water supplied to the fuel replacement water pit 61. Therefore, it is possible to select whether primary cooling water is sprayed into the reactor containment vessel 11, supplied into the pressurized water reactor 12, or both depending on the accident situation of the nuclear reactor equipment, and safety is improved. Can be improved.
- the ducts 81, 83, and 85 that extend in the vertical direction inside the first building 50 and have the lower suction port 82 and the upper discharge port 84 are provided, A cooling device 52 is provided in the connecting portion of the ducts 81, 83, 85. Therefore, the air flowing through the first duct 81 from the lower suction port 82 is sent to the cooling device 52, where heat exchange with the cooling water is performed, and the hot air is discharged from the upper discharge port 84 to the outside.
- the primary cooling water can be efficiently cooled by air.
- the cooling device 52 is provided with a plurality of thin tubes 93 that are branched from the cooling water circulation path 51 and arranged so as to cross the ducts 81, 83, 85. Accordingly, the air sucked into the ducts 81, 83, 85 from the lower suction port 82 is sent to the plurality of thin tubes 93, where heat exchange between the air and the primary cooling water flowing through the thin tubes 93 is performed. The air thus formed is discharged to the outside from the upper discharge port 84, and the primary cooling water can be efficiently cooled by the air.
- the upper discharge port 84 of each of the ducts 81, 83, 85 communicates with the space 96 surrounded by the thin tube 93.
- the cooling device 52 can be downsized by improving the heat exchange efficiency.
- fans 99 and 100 are provided for sending the air in the space 96 surrounded by the inlet header 91, the outlet header 92, and the narrow tube 93 upward or downward. Accordingly, the air exchanged with the primary cooling water flowing through the plurality of thin tubes 93 due to the air flow generated by driving the fans 99 and 100 is discharged upward or downward from the internal space. Exchange efficiency can be improved.
- Cooling device for normal time (reactor auxiliary coolant heat exchanger 46) for cooling the secondary cooling water flowing through the machine cooling system A, and primary cooling water to the reactor containment vessel 11 or the pressurized water reactor 12 in an emergency.
- Reactor cooling system B (cooling water circulation path 51) that circulates and cools the reactor, and an emergency cooling device (cooling device) that air-cools the primary cooling water that flows through the reactor cooling system B outside the reactor containment vessel 11 52).
- auxiliary cooling system A auxiliary cooling system
- reactor cooling system B reactor cooling system
- the primary cooling water for the cooling water pipes 14 and 15 is used as the fuel replacement water pit.
- An emergency extraction path 74 for extracting to 61 and a circulation path 71 for circulating the primary cooling water of the fuel replacement water pit 61 via the cooling device 52 are provided. Therefore, by providing two cooling systems that can be used when shutting down the nuclear reactor, the cooling systems can be diversified without impairing the economy, and high reliability can be ensured.
- FIG. 8 is a schematic configuration diagram showing a nuclear reactor facility having an emergency core cooling apparatus according to Embodiment 2 of the present invention
- FIG. 9 is a schematic plan view with a part cut away showing the reactor facility of Embodiment 2.
- FIG. 10 is a cross-sectional view taken along the line XX of FIG. 9 showing the duct in which the cooling device is arranged.
- symbol is attached
- Example 2 Since the reactor of Example 2 is a pressurized water reactor as in Example 1, description of the reactor containment vessel and its internal structure is omitted.
- this reactor cooling system is also provided in an auxiliary machine cooling system that circulates and cools primary cooling water to a nuclear reactor auxiliary machine at normal times, and a reactor containment vessel and a nuclear reactor in an emergency. Since an emergency reactor cooling system that circulates and cools the primary cooling water is provided independently, description of this point is also omitted.
- the first building 111 is installed so as to surround the outer peripheral side of the reactor containment vessel 11 having a hollow cylindrical shape, and the first building 111 is a flat surface.
- the view is rectangular.
- a lower foundation plate 113 is installed on the ground 112, and an upper foundation plate 115 is disposed on the lower foundation plate 113 via a seismic isolation device 114.
- a storage container 11 and a first building 111 are installed.
- the lower foundation plate 113 has a center base portion 113a corresponding to the lower side of the reactor containment vessel 11 and an outer periphery base portion 113b corresponding to the lower side of the first building 111 on the outer peripheral side of the center base portion 113a. ing.
- the center base portion 113a has a substantially circular shape
- the outer periphery base portion 113b has a rectangular shape
- the outer periphery base portion 113b is positioned below the center base portion 113a via the bent portion 113c.
- the upper base plate 115 is a central base portion 115a where the lower portion of the reactor containment vessel 11 is installed, and an outer peripheral side of the central base portion 115a, and the lower portion of the first building 111 is It has the outer periphery base part 115b installed.
- the center base portion 115a has a substantially circular shape
- the outer periphery base portion 115b has a rectangular shape
- the outer periphery base portion 115b is positioned below the center base portion 115a via the bent portion 115c.
- the lower base plate 113 and the upper base plate 115 are horizontal and are arranged in parallel.
- a space 116 is provided between the lower foundation plate 113 and the upper foundation plate 115, and a seismic isolation device 114 is interposed in the space 116.
- the seismic isolation device 114 is configured, for example, by arranging lead-containing laminated rubber 114a at approximately equal intervals.
- the configurations of the lower base plate 113, the seismic isolation device 114, and the upper base plate 115 are not limited to this configuration, and may be configured by a simple horizontal member.
- the lower base plate 113 has a vertical wall portion 113d erected with a predetermined gap so as to surround the first building 111 and the upper base plate 115 on the outer peripheral portion.
- the height of the vertical wall portion 113d is substantially the same height as the ground surface of the ground 112.
- the first building 111 or the upper base plate 115 is provided with an upper end portion of the vertical wall portion 113d of the lower base plate 113 and a flange portion 115d adjacent to the inner peripheral surface on the outer peripheral surface.
- the flange portion 115d is located above the gap between the vertical wall portion 113d of the lower foundation plate 113 and the first building 111 or the upper foundation plate 115, and serves to prevent rainwater from entering the gap. Yes.
- a plurality of ducts 121 are provided on the outer periphery of the first building 111 at equal intervals in the circumferential direction.
- ducts 121 are provided at the four corners. That is, in the first building 111, the duct 121 is formed along the vertical direction, the lower end portion is between the lower base plate 113 and the upper base plate 115, and the space portion in which the seismic isolation device 114 is accommodated. 116. This space portion 116 can communicate with the outside through a gap between the vertical wall portion 113 d of the lower base plate 113 and the first building 111 and the upper base plate 115.
- the lower suction port (building lower suction port) 122 is formed between the tip of the vertical wall portion 113 d of the lower base plate 113 and the flange portion 115 d of the upper base plate 115.
- the lower suction port 122 is provided on the entire circumference of the outer periphery of the first building 111.
- the duct 121 has an upper end communicating with a plurality of upper outlets (building upper outlets) 123 provided in the roof portion 111a of the first building 111.
- the upper discharge ports 123 are formed at four locations on the side of the roof portion 111a.
- a widened portion 111b is formed at an upper portion, that is, a position close to the roof portion 111a, and a cooling device 124 is disposed in the widened portion 111b.
- the cooling device 124 includes an inlet header, an outlet header, and a plurality of thin tubes that connect the two.
- a cooling water circulation path 51 (see FIG. 2) is connected to the inlet header and the outlet header.
- a plurality of (four in this embodiment) fans 125 are provided above the cooling device 124 and below the roof portion 111a.
- the first duct 121a has a lower end portion communicating with the lower suction port 122 through the space portion 116, and an upper end portion inside the cooling device 124, that is, The inlet header, the outlet header, and a space surrounded by a plurality of thin tubes communicate with each other.
- the second duct 121b has a lower end communicating with the outside of the cooling device 124, that is, an inlet header, an outlet header, and a space outside the plurality of thin tubes, and an upper end connected to the upper outlet 123 via the fan 125. Communicate.
- the space surrounded by the inlet header, the outlet header, and the plurality of thin tubes is open at the bottom, but is closed at the top.
- each fan 125 when each fan 125 is rotated by an electric motor (not shown), an upward flow is generated in the second duct 121b, and in the cooling device 124, a suction force that flows outward from the inner space through a plurality of thin tubes acts.
- the suction force acts on the lower suction port 122 through the first duct 121a, the space 116, and the gap between the first building 111 and the vertical wall 113d. Then, the air outside the first building 111 is sucked into the space 116 from the lower suction port 122 and guided to the inside of the cooling device 124 through the first duct 121a.
- the cooling device 124 when the outside air passes through the gaps between the thin tubes, heat exchange is performed between the air and the primary cooling water flowing through the thin tubes, thereby cooling the primary cooling water. And the air which took heat from primary cooling water and became high temperature flows into the 2nd channel
- Such an operation is executed during emergency operation of the nuclear reactor equipment. That is, at the time of the large breakage LOCA or the small breakage LOCA of the reactor facility, the primary containment water that has become a high temperature by cooling the reactor containment vessel 11 and the pressurized water reactor 12 is cooled by the cooling device 124. That is, when the primary cooling water that has become high temperature by cooling the reactor containment vessel 11 or the pressurized water reactor 12 flows through the cooling water circulation path 51, it is continuously cooled by the cooling device 124.
- the duct 121 having the lower suction port 122 and the upper discharge port 123 is provided in the first building 111 so as to extend along the vertical direction.
- a device 124 is provided in the duct 121. Accordingly, the air flowing in the duct 121 from the lower suction port 122 is sent to the cooling device 124, where heat exchange with the cooling water is performed, and the high temperature air is sent from the upper discharge port 123 of the first building 111. It will be discharged to the outside, the chimney effect can be applied efficiently, and the cooling efficiency of the primary cooling water by air can be improved.
- the fan 125 that sends out air, which is sucked from the lower suction port 122 and moves up the duct 121 and cools the cooling water flowing through the narrow tube of the cooling device 124, to the upper discharge port 123 side. Is provided. Therefore, air exchanged with the primary cooling water is discharged upward by the air flow generated by driving the fan 125, and the heat exchange efficiency can be improved.
- the lower foundation plate 113 is installed on the ground 112
- the upper foundation plate 115 is disposed on the lower foundation plate 113 via the seismic isolation device 114
- the upper foundation plate 115 is disposed.
- the reactor containment vessel 11 and the first building 111 are installed on the top, and the lower suction port 122 provided in the vicinity of the ground surface portion and the duct 121 are communicated with each other through a space portion 116 in which the seismic isolation device 124 is disposed. Accordingly, air near the ground surface is taken into the space portion 116 from the lower suction port 122 and sent from here to the cooling device 124 through the duct 121, so that cooler air can be sent to the cooling device 124 through the space portion 116.
- Cooling efficiency can be improved. That is, by disposing the lower suction port 122 and the upper discharge port 123 away from each other by a predetermined distance, it is possible to prevent high temperature air discharged from the upper discharge port 123 from being sucked from the lower suction port 122. .
- the lower suction port 122 is provided between the upper base plate 115 and the flange portion 115d of the first building 111 and the vertical wall portion 113d of the lower base plate 113. Therefore, it is not necessary to provide a separate inlet in the first building 111 or the like, and the structure can be simplified.
- the first building 111 is installed so as to surround the reactor containment vessel 11, and the ducts 121 are distributed on the outer periphery of the first building 111 at equal intervals in the circumferential direction. That is, they are provided at the four corners of the first building 111. Therefore, by providing a plurality of cooling devices 124 and ducts 121 that are physically separated in the circumferential direction, the remaining cooling devices 124 and ducts 121 can be used even if some of them are damaged or broken down. Thus, the primary cooling water can be appropriately cooled, and sufficient safety can be ensured.
- the cooling devices 52 and 124 are arranged such that the four inlet headers 91 and the four outlet headers 92 are arranged in a square shape, and each of the inlet headers 91 and each of the outlet headers 92 is formed by a plurality of thin tubes 93. Although connected and configured, it is not limited to this shape.
- the cooling device 52 is not limited to a quadrangular shape, and may be a circular shape by bending a triangular shape, a hexagonal shape, or a thin tube, for example.
- the emergency core cooling apparatus and the reactor equipment of the present invention have been described as applied to a pressurized water reactor (PWR), but a boiling water reactor (BWR: It can also be applied to Boiling Water Reactor.
- the cooling water circulation path is configured by a path for supplying cooling water stored in a suppression pool provided in a lower part of the reactor containment vessel into the reactor and a path for recovering the cooling water, and supplying the cooling water. May be provided outside the reactor containment vessel, and a cooling device for air cooling the cooling water flowing through this path may be provided.
- the emergency core cooling device and the reactor equipment according to the present invention can be reduced in size and cost by providing a cooling device that air-cools the cooling water supplied to the reactor containment vessel or the reactor in an emergency. In addition, it improves safety and reliability, and can be applied to any nuclear reactor.
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Abstract
Description
12 加圧水型原子炉
13 蒸気発生器
14,15 冷却水配管
15a 冷却水ポンプ(補機)
40 第2建屋
42 余熱除去冷却経路
43 余熱除去用熱交換器(通常時用冷却装置)
46 原子炉補機冷却水用熱交換器(通常停止時用冷却装置)
50,111 第1建屋
51 冷却水循環経路(原子炉冷却経路)
52,124 冷却装置(非常時用冷却装置)
53 外部経路
61 燃料取替用水ピット
62 散布経路
66 供給経路
71 循環経路
81,121a 第1ダクト
82,122 下方吸入口(建屋下方吸入口)
83,121b 第2ダクト
84,123 上方排出口(建屋上方排出口)
85 第3ダクト
99,100,125 ファン
111a 屋根部
111b 拡幅部
112 地盤
113 下部基礎版
113a 中央基礎部
113b 外周基礎部
113c 屈曲部
113d 縦壁部
114 免震装置
114a 鉛入り積層ゴム
115 上部基礎版
115a 中央基礎部
115b 外周基礎部
115c 屈曲部
115d フランジ部
116 空間部
121 ダクト
A 補機冷却系(補機冷却経路)
B 原子炉冷却系(原子炉冷却経路)
Claims (12)
- 原子炉格納容器内に原子炉が配置された原子炉設備において、
非常時に前記原子炉格納容器または前記原子炉に冷却水を供給すると共に冷却水を回収して循環する冷却水循環経路と、
前記原子炉格納容器の外部にて前記冷却水循環経路を流れる冷却水を空気冷却する冷却装置と、
を備えることを特徴とする非常用炉心冷却装置。 - 前記原子炉格納容器の外側に建屋が設置され、前記冷却水循環経路は、前記原子炉格納容器内から前記建屋内に侵入して再び前記原子炉格納容器に戻る外部経路を有し、前記冷却装置は、前記外部経路を流れる冷却水を空気冷却することを特徴とする請求項1に記載の非常用炉心冷却装置。
- 前記冷却水循環経路及び前記冷却装置は、前記建屋内に複数組配置されることを特徴とする請求項2に記載の非常用炉心冷却装置。
- 前記冷却水循環経路は、前記原子炉格納容器内に設けられる燃料取替用水ピット内の冷却水を前記原子炉格納容器内に散布する散布経路と、前記燃料取替用水ピット内の冷却水を前記原子炉内に供給する供給経路と、前記原子炉格納容器内に散布された冷却水及び前記原子炉内に供給された冷却水を前記燃料取替用水ピットに回収する回収経路とを有することを特徴とする請求項1から3のいずれか一つに記載の非常用炉心冷却装置。
- 前記建屋の内部に上下方向に沿って延設されると共に建屋下方吸入口と建屋上方排出口を有するダクトが設けられ、前記冷却装置は、該ダクト内に設けられることを特徴とする請求項2から4のいずれか一つに記載の非常用炉心冷却装置。
- 前記冷却装置は、前記冷却水循環経路から分岐されて前記ダクト内を横切るように配置される複数の細管を有することを特徴とする請求項5に記載の非常用炉心冷却装置。
- 前記冷却装置は、前記冷却水循環経路から冷却水が入る入口ヘッダと、前記冷却水循環経路に冷却水を出す出口ヘッダと、前記入口ヘッダと前記出口ヘッダをリング形状をなすように連結する複数の前記細管とを有し、前記入口ヘッダと前記出口ヘッダと前記細管とにより囲繞された空間部と前記細管より外側の空間のいずれか一方の空間部に前記建屋下方吸入口が連通し、他方の前記空間部に前記ダクトの建屋上方に設けられた排出口が連通することを特徴とする請求項5または6に記載の非常用炉心冷却装置。
- 前記建屋下方吸入口から吸入されて前記ダクトを上昇して前記細管を流れる冷却水を冷却した空気を前記建屋上方排出口側に送り出すファンが設けられることを特徴とする請求項5から7のいずれか一つに記載の非常用炉心冷却装置。
- 地盤上に下部基礎版が設置され、該下部基礎版上に免震装置を介して上部基礎版が配置され、該上部基礎版上に前記原子炉格納容器及び前記建屋が設置され、地表部分近傍に設けられる前記建屋下方吸入口と前記ダクトが前記免震装置が配置される空間部を介して連通されることを特徴とする請求項5から8のいずれか一つに記載の非常用炉心冷却装置。
- 前記建屋下方吸入口は、上部基礎版または前記建屋と前記下部基礎版との間に設けられることを特徴とする請求項9に記載の非常用炉心冷却装置。
- 前記建屋は、前記原子炉格納容器の周囲を取り囲むように設置され、前記ダクトは、前記建屋の外周部に周方向等間隔に分散して複数設けられることを特徴とする請求項5から10のいずれか一つに記載の非常用炉心冷却装置。
- 原子炉格納容器と、
該原子炉格納容器内に配置される原子炉と、
原子炉補機と、
通常時に前記原子炉補機に冷却水を循環して冷却する補機冷却経路と、
前記原子炉格納容器の外部にて前記補機冷却経路を流れる冷却水を水冷却する通常時用冷却装置と、
非常時に前記原子炉格納容器または前記原子炉に一次冷却水を循環して冷却する原子炉冷却経路と、
前記原子炉格納容器の外部にて前記原子炉冷却経路を流れる一次冷却水を空気冷却する非常時用冷却装置と、
を備えることを特徴とする原子炉設備。
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CN2010800491304A CN102667952A (zh) | 2009-11-12 | 2010-09-14 | 紧急用反应堆堆芯冷却装置及反应堆设备 |
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JP2003270374A (ja) * | 2002-03-19 | 2003-09-25 | Hitachi Ltd | 格納容器スプレイ制御装置 |
JP2009156795A (ja) * | 2007-12-27 | 2009-07-16 | Mitsubishi Heavy Ind Ltd | pH調整システムおよびpH調整方法 |
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FR2500676A1 (fr) * | 1981-02-24 | 1982-08-27 | Commissariat Energie Atomique | Dispositif de refroidissement de secours d'un reacteur nucleaire refroidi a l'eau |
BE897136A (fr) * | 1983-06-24 | 1983-10-17 | Westinghouse Nuclear Internat | Installation de refroidissement de securite pour reacteur nucleaire a eau |
CN100510595C (zh) * | 2005-02-01 | 2009-07-08 | 北京北大青鸟新能源科技有限公司 | 全自然循环空气冷却塔 |
CN101441902B (zh) * | 2008-11-18 | 2011-10-05 | 肖宏才 | 固有安全池壳结合低温堆核供热站装置及其运行程序 |
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2010
- 2010-09-14 KR KR1020127011199A patent/KR20120070594A/ko not_active Application Discontinuation
- 2010-09-14 EP EP10829777A patent/EP2500908A1/en not_active Withdrawn
- 2010-09-14 WO PCT/JP2010/065865 patent/WO2011058817A1/ja active Application Filing
- 2010-09-14 CN CN2010800491304A patent/CN102667952A/zh active Pending
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JPS5633476U (ja) * | 1979-08-15 | 1981-04-01 | ||
JPH06242279A (ja) * | 1993-02-12 | 1994-09-02 | Hitachi Ltd | 原子炉格納設備 |
JPH0715506A (ja) | 1993-06-17 | 1995-01-17 | Nippon Telegr & Teleph Corp <Ntt> | 交換装置におけるレイヤ2処理の輻輳制御方式 |
JPH08160179A (ja) * | 1994-08-19 | 1996-06-21 | General Electric Co <Ge> | 液体金属冷却式原子炉 |
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JP2002107480A (ja) * | 2000-09-29 | 2002-04-10 | Hitachi Ltd | 建屋構造 |
JP2003270374A (ja) * | 2002-03-19 | 2003-09-25 | Hitachi Ltd | 格納容器スプレイ制御装置 |
JP2009156795A (ja) * | 2007-12-27 | 2009-07-16 | Mitsubishi Heavy Ind Ltd | pH調整システムおよびpH調整方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013160757A (ja) * | 2012-02-07 | 2013-08-19 | Korea Atomic Energy Research Inst | 原子力発電所の残留熱除去システム |
WO2014020091A1 (de) * | 2012-07-31 | 2014-02-06 | Areva Gmbh | Wärmeabfuhrsystem für eine kerntechnische anlage |
Also Published As
Publication number | Publication date |
---|---|
KR20120070594A (ko) | 2012-06-29 |
CN102667952A (zh) | 2012-09-12 |
EP2500908A1 (en) | 2012-09-19 |
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