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Experimental system for interaction between fuel and coolant inside sodium-cooled fast reactor molten fuel tank

A sodium-cooled fast reactor and experimental system technology, applied in educational appliances, instruments, teaching models, etc., can solve problems such as recritical danger, and achieve the effect of improving safety evaluation

Inactive Publication Date: 2017-08-04
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous studies in the world have shown that when a core disintegration accident occurs in a sodium-cooled fast reactor, under extremely pessimistic conditions, with the development of the accident, a large molten fuel pool may be formed in the core area. As a result, the fuel distribution will become denser, raising the risk of recriticality

Method used

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  • Experimental system for interaction between fuel and coolant inside sodium-cooled fast reactor molten fuel tank
  • Experimental system for interaction between fuel and coolant inside sodium-cooled fast reactor molten fuel tank

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Such as figure 1 , 2 As shown, an experimental system for the interaction between fuel and coolant in a sodium-cooled fast reactor molten fuel pool provided by the present invention includes a reaction vessel 1, a coolant vessel 2, a drive module, a heating module 3, a data acquisition module and a control terminal 4; wherein the heating module 3 is used to heat the reaction container 1; the coolant container 2 is arranged above the reaction container 1, and the coolant container 2 is connected to the driving end of the drive module, and the drive module is used to turn the coolant container 2 to the transported down to the reaction container 1; the data collection module is set in the reaction container 1; the heating module 3, the drive module, and the data collection module are electrically connected to the control terminal 4.

[0015] In this embodiment, the control terminal 4 is a computer.

[0016] The working process of the experimental system is as follows: th...

Embodiment 2

[0018] On the basis of Embodiment 1, this embodiment further optimizes the specific structure of the experimental system, specifically:

[0019] The reaction container 1 is installed on a support; the support is provided with a screw rod installation position and a motor installation position. Wherein the drive module includes a motor 5, a motor control circuit and a screw mandrel 6, the screw mandrel 6 is arranged vertically downward, the motor 5 and the screw mandrel 6 are connected in transmission, the motor 5 is electrically connected with the control terminal 4 through the motor control circuit, and the screw mandrel 6. The motor 5 is respectively installed on the screw rod installation position and the motor installation position.

[0020] During specific implementation, the control terminal 4 controls the rotation of the motor 5 by controlling the motor control circuit, and then adjusts the movement of the screw rod 6, thereby driving the movement of the coolant contain...

Embodiment 3

[0026] In this embodiment, on the basis of Example 2, the specific structure of the reaction generating vessel 1 is further optimized. Specifically, the reaction generating vessel 1 is made of stainless steel, which is columnar as a whole, and a temperature transmitter is arranged inside it. The installation port and the pressure transmitter installation port, as well as a pressure relief valve installation port and a low melting point alloy discharge port, during the experiment, the reaction vessel 1 can withstand a high temperature within 1000 degrees Celsius and an internal pressure of at least 2MPa.

[0027] In the specific implementation process, the upper part of the reaction generating container 1 is provided with a heat insulating cylinder 7, and the heat insulating cylinder 7 is suspended in the reaction generating container 1, and the top end of the heat insulating cylinder 7 is provided with an end cover, so A group of gas inlet and outlet and coolant container 2 inl...

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Abstract

The present invention relates to an experimental system for the interaction between the fuel and the coolant inside a molten fuel tank during the occurrence of a severe accident in a sodium-cooled fast reactor. The experimental system comprises a reaction occurrence container, a coolant container, a driving module, a heating module, a data acquisition module and a control terminal. The heating module is used for heating the reaction occurrence container. The coolant container is arranged above the reaction occurrence container. The coolant container is connected with the driving end of the driving module. The driving module is used for downwardly delivering the coolant into the reaction occurrence container. The data acquisition module is arranged in the reaction occurrence container. The heating module, the driving module and the data acquisition module are electrically connected with the control terminal.

Description

technical field [0001] The invention relates to the field of the sodium-cooled fast reactor of the fourth generation nuclear energy system, and more specifically relates to an experimental system for local interaction between fuel and coolant in a molten fuel pool during a serious accident of the sodium-cooled fast reactor. Background technique [0002] Compared with the previous three generations of nuclear power technology, the fourth generation of nuclear power technology has the advantages of better safety, higher economy, less nuclear waste generation and effective prevention of nuclear proliferation. As the preferred reactor type in the fourth generation nuclear power technology in the world, the sodium-cooled fast reactor represents the development trend and technological frontier of advanced nuclear energy systems. Therefore, research on the mechanism of severe core disintegration accidents in sodium-cooled fast reactors is of great significance for alleviating and a...

Claims

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Application Information

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IPC IPC(8): G09B23/20
CPCG09B23/20
Inventor 成松柏朱庭林少鹏张婷陈敏莉冯婉琪胡青云
Owner SUN YAT SEN UNIV
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