Heating device

Abstract

The invention relates to a heating device which comprises a framework and an electrical heating rod bundle arranged on the framework. The electrical heating rod bundle comprises multiple electrical heating rods, the upper ends of all the electrical heating rods are connected with a power control and data recording system through corresponding electrical heating wires, and the power control and data recording system is used for controlling and setting electrical heating powder in the electrical heating rods; temperature measuring devices are arranged at different heights of the outer walls of all the electrical heating rods respectively, and all the temperature measuring devices are connected with the data control and data recording system through corresponding measuring wires. The heating device can simulate the processes of evaporation to dryness and heating after dryness of spent fuel elements which are different in decay heat under different working conditions after the cooling function is lost and the spray cooling process for relieving accident consequences, the heating device is used for spent fuel element storage, process simulation validation, spent fuel pool accident analysis and design of a spray cooling system, and the purposes of improving safety storage of the spent fuel elements and safety of a spent fuel pool are achieved.

Description

technical field [0001] The invention belongs to the field of heating, and in particular relates to a heating device, which realizes the simulation of the thermal hydraulic process related to the cooling condition of the spent fuel pool and the spent fuel behavior in the cooling process and the recooling process of the spent fuel. Background technique [0002] The difference between the spent fuel storage pool and the reactor with multi-layer physical barriers that adopts the defense-in-depth design is that its defense design is relatively weak. The environment is radioactively polluted. Loss of cooling is the most important accident in the spent fuel pool. Under the conditions of the loss of cooling accident, since the decay heat of the spent fuel cannot be taken away in time, the accumulation of heat will cause the temperature of the spent fuel cladding to rise, which in turn will lead to the integrity of the cladding. Risk of loss or even burning, resulting in the release...

AI Technical Summary

Problems solved by technology

[0002] The difference between the spent fuel storage pool and the reactor with multi-layer physical barriers that adopts the defense-in-depth design is that its defense design is relatively weak. radioactive contamination of the environment

Loss of cooling is the most important accident in the spent fuel pool. Under the conditions of the loss of cooling accident, since the decay heat of the spent fuel cannot be taken away in time, the accumulation of heat will cause the temperature of the spent fuel cladding to rise, which in turn will lead to the integrity of the cladding. risk of loss or even burning, resulting in the release of large quantities of radioactive material

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