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Passive systems for removing residual heat from nuclear reactors

A nuclear reactor and residual heat technology, applied in nuclear reactors, reactors, fast fission reactors, etc.

Active Publication Date: 2018-07-03
アゲンツィアナチオナーレペルレヌオーブテクノロジレネルジアエロスビルッポエコノミコソステニビレエエンネエア +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, mainly active systems were used, i.e. systems that required electrical energy to operate, however today passive systems are increasingly used, i.e. systems that do not require electrical energy to operate, but such passive systems also require an operator or control logic and power supply. intervene to become operational

Method used

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  • Passive systems for removing residual heat from nuclear reactors
  • Passive systems for removing residual heat from nuclear reactors
  • Passive systems for removing residual heat from nuclear reactors

Examples

Experimental program
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Embodiment Construction

[0012] figure 1 A nuclear reactor 1 of a type substantially known per se is shown in very schematic form.

[0013] The reactor 1 comprises a vessel 2 covered by a top cover 3; inside the vessel 2 is arranged a core 4 cooled by a primary fluid 5 (for example composed of sodium, lead, lead-bismuth eutectic or molten salt) which fills the vessel 2 to The free surface 6; the container 2 also houses the main heat exchanger (known and not shown), which transfers the energy generated in the core 4 to the outside via a circuit in which a secondary cooling fluid circulates, and the container 2 Other components are also accommodated, which are not shown since they are not relevant to the invention.

[0014] The reactor 1 is provided with a residual heat removal system 10 comprising: at least one first heat exchanger 11 accommodated in the container 2; high position (ie higher from the ground) and is connected to the heat exchanger 11 through a discharge circuit 13 .

[0015] Preferab...

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PUM

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Abstract

A system for removing residual heat from a nuclear reactor includes: a first heat exchanger that transfers heat from a primary fluid of the reactor to a secondary fluid; a second heat exchanger wherein the secondary fluid is cooled by an auxiliary fluid passing through a cooling conduit; and the control part thermally expanded under the influence of the heating of the secondary fluid in the control part caused by the temperature of the primary fluid increasing above a preset threshold; the control part is connected to the mechanical actuator means , the actuator means is moved by thermal expansion of the control part to open the cooling duct and allow the auxiliary fluid to enter the cooling channel through the second heat exchanger.

Description

technical field [0001] The invention relates to a system for removing residual heat from a nuclear reactor, ie a passive system. Background technique [0002] It is known that, in nuclear reactors, it is necessary to remove residual heat after the shutdown of the reactor. For safety reasons, the system for removing residual heat must be particularly reliable and preferably multi-faceted. [0003] In the past, mainly active systems were used, i.e. systems that required electrical energy to operate, however today passive systems are increasingly used, i.e. systems that do not require electrical energy to operate, but such passive systems also require an operator or control logic and power supply. intervention to become operational. Contents of the invention [0004] It is an object of the present invention to provide a system for removing residual heat from a nuclear reactor which does not require an energy supply to operate and which operates independently of an operator ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/18G21C1/03
CPCG21C15/18G21C1/03F16K31/002Y02E30/30
Inventor P·阿戈斯蒂尼M·塔栏蒂诺L·奇诺蒂
Owner アゲンツィアナチオナーレペルレヌオーブテクノロジレネルジアエロスビルッポエコノミコソステニビレエエンネエア