Classifications

• • G—PHYSICS
  • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
  • G21C—NUCLEAR REACTORS
  • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
  • G21C19/02—Details of handling arrangements
  • G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
• • G—PHYSICS
  • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
  • G21C—NUCLEAR REACTORS
  • G21C1/00—Reactor types
• • G—PHYSICS
  • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
  • G21C—NUCLEAR REACTORS
  • G21C1/00—Reactor types
  • G21C1/04—Thermal reactors ; Epithermal reactors
  • G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
  • G21C1/08—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor
  • G21C1/086—Pressurised water reactors
• • G—PHYSICS
  • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
  • G21C—NUCLEAR REACTORS
  • G21C13/00—Pressure vessels; Containment vessels; Containment in general
  • G21C13/02—Details
• • G—PHYSICS
  • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
  • G21C—NUCLEAR REACTORS
  • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
  • G21C19/02—Details of handling arrangements
• • G—PHYSICS
  • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
  • G21C—NUCLEAR REACTORS
  • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
  • G21C19/32—Apparatus for removing radioactive objects or materials from the reactor discharge area, e.g. to a storage place; Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom
• • 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 invention relates to a modular pressuri zed water nuclear reactor using low-enriched nuclear fuel for heat generation with an expected power generation range of 2 to 100 MW .
• a modular pressuri zed water nuclear reactor comprising a pressuri zed reactor outer vessel , where a hermetically sealed primary circuit inner vessel (NIO) , within which there is a core for a nuclear fuel battery, is arranged according to this invention .
• NEO primary circuit inner vessel
• the summary hereof is that there is a mobi le container containing a nuclear fuel battery at the upper end of the pressure outer vessel ; this container is provided with water inlets and outlets and sealing elements at the bottom thereof with the reactor pressure outer vessel and the opening bottom hatch for retracting and ej ecting the nuclear fuel battery, wherein there is a beam with locking pins for fixing the nuclear fuel battery, connected to a winch with a control module at the ceiling of the mobile container.
• the mobile container is preferably equipped with an after-cooling system.
• the solution summary is a relocatable mobile container with a nuclear fuel battery, which is fitted with sealing elements between the inner primary circuit vessel (NIO) .
• NEO inner primary circuit vessel
• the container is fitted with a lid having a seal. The lid is pulled inside the container.
• the automatic mechanism of the bottom hatch always closes it, wherein counterforce is required to open it.
• the container includes flanged connections for the water outlet and inlet for filling and emptying.
• the container design allows for after-cooling, i.e., heat removal from the nuclear fuel battery using water circulation and a fin system.
• On the top lid of the container there is a module with a winch for inserting and retrieving the nuclear fuel battery.
• the container is removable and replaceable with another top-lid module. For example, for transport outside the block.
• a beam is used to pull in the nuclear fuel battery, which is lowered by a winch and secured by a guiding on the NIO inner walls.
• the beam is secured to the nuclear fuel battery top using extension locking pins. There are attachment points on the nuclear fuel battery top side.
• the nuclear fuel battery is inserted into a containment cylinder and secured by mechanical pins at the top and bottom.
• FIG. 1 shows schematically in cross-section an exemplary modular pressuri zed water nuclear reactor with a container for a nuclear fuel battery .
• the exemplary modular pressuri zed water nuclear reactor comprises a pressure outer reactor vessel 2_ containing a hermetically sealed inner primary circuit vessel _1 , inside which there is a fuel cell core .
• the mobile container 3. with the nuclear fuel battery 4. provided with water inlets and outlets _6.
• the container 3. is provided with sealing elements 5. with the reactor pressure outer vessel 2_.
• container 3_ is provided with an opening bottom hatch 7_ to insert and ej ect the nuclear fuel battery 4. from the inner primary circuit container 1 .
• container 3_ At the ceiling of container 3_, there is a beam 8 with locking pins _9 to attach the nuclear fuel battery -4 , connected to the winch 10 with the control module 11 .
• the container 3_ is equipped with after-cooling system 12 .
• the bottom hatch 7_ of the container 3. is equipped with an automatic closing mechanism .
• An exemplary small modular reactor is a pressuri zed water nuclear reactor, the characteristic feature of which is the presence of an additional closed coolant circulation circuit .
• the weight of the reactor with fuel is about 323 t .
• the height of the reactor without the control rods is about 13 m .
• the maximum diameter, excluding the coupling sleeves is 4350 mm .
• the reactor consists of the pressure outer vessel 2_ of the reactor and the hermetic inner vessel
• the pressure outer vessel 2_ of the reactor consists of a vertical cylindrical high- pressure vessel with inlet coupling sleeves and outlet coupling sleeves of coolant , and a bottom .
• the cladding material is high-quality structural alloy steel , usually 15Cr2NiMoVA or equivalent .
• the inner surface of the body and flanges is covered with a corrosion-resistant coating .
• the modular pressuri zed water nuclear reactor is equipped with a lid .
• the lid can be removed, i . e .
• the upper block is dismantled, and the protection tube block is removed .
• the container 3_ without the nuclear fuel battery is placed on the reactor pressure outer vessel 2_ and sealed to the reactor pressure outer vessel 2_ and the primary circuit inner vessel _1 .
• the bottom hatch 7_ of container 3 is then opened . Water is filled into the container 3 via the inlet and outlet 6 flange connections .
• the beam _8 is lowered using winch 10 , located in the top lid of the container 3..
• the beam _8 is secured using the extension locking pins _9 to the top of the nuclear fuel battery -4 via the attachment points .
• Nuclear fuel battery is pulled into container 3_.
• the bottom hatch 7_ of container 3. is closed .
• the nuclear fuel battery is secured using extension locking pins _9 in the container 3..
• the excess water level is pumped of f .
• Container 3_ with nuclear fuel battery -4 is then transported to the spent fuel pool .
• the container 3_ containing the fresh nuclear fuel battery is placed on the reactor pressure outer vessel 2_, the container is resealed, the bottom hatch 7 of the container 3_ is opened, the locking pins _9 holding the nuclear fuel battery in the container 3. are released, and the fresh nuclear fuel battery -4 is lowered into the core area .
• the beam 8_ is detached from the fresh nuclear fuel battery -4 , the beam 8_ is removed, and the hatch 7 of the container 3_ is closed .
• the empty container 3_ is put aside in the storage area .
• the block of protective tubes is filled up, and the upper block is fitted out .
• the reactor is ready for further operation .
• the modular pressuri zed water nuclear reactor according to the present invention will find application thereof primarily as a backup source of electrical power in municipal power generation, in power and heat generation, and as a stable ecological source of heat and power .

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• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Plasma & Fusion (AREA)
• General Engineering & Computer Science (AREA)
• High Energy & Nuclear Physics (AREA)
• Battery Mounting, Suspending (AREA)
• Structure Of Emergency Protection For Nuclear Reactors (AREA)
• Monitoring And Testing Of Nuclear Reactors (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=89073352

Family Applications (1)

Country Status (2)

Citations (2)

Family Cites Families (2)

• 2022
  • 2022-11-04 CZ CZ2022-459A patent/CZ309874B6/cs unknown
• 2023
  • 2023-11-06 WO PCT/IB2023/061175 patent/WO2024095241A1/en not_active Ceased

Patent Citations (2)

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