A three-channel molten salt reactor core structure and three-channel molten salt reactor system

Abstract

The invention discloses a three-flow channel molten salt reactor core structure and a three-flow channel molten salt reactor system. The three-flow molten salt reactor core structure includes a fuel flow channel, a moderator flow channel and a cooling flow channel; the fuel flow channel is used for accommodating fuel salt, the cooling flow channel is used for accommodating coolant, and the slow flow channel is used for accommodating coolant. The moderator flow channel is used to accommodate the moderator; wherein, the fuel flow channel, the moderator flow channel and the cooling flow channel are not communicated with each other, and the axes are parallel to each other; the fuel flow channel is nested in the In the moderating flow channel, the moderating flow channel is nested in the cooling flow channel. The molten salt reactor system of the present invention can not only achieve a higher core outlet temperature, but also can improve the power density to achieve a compact design, and at the same time, it can also realize continuous online material feeding, online post-processing and online moderator replacement, and the core life can be improved. Long term and low cost.

Description

technical field [0001] The invention relates to a three-flow channel molten salt reactor core structure and a three-flow channel molten salt reactor system. Background technique [0002] In existing liquid-fuel molten salt reactor designs, fuel salts generally refer to a mixture of fission fuel, switchable materials, and carrier salts. In the molten liquid state at high temperature, the fuel salt acts as both nuclear fuel and coolant, circulating inside and outside the molten salt reactor. Because the fuel salt absorbs a lot of heat and heat transfer is slow, the working temperature of the liquid fuel molten salt reactor can usually only be designed or operated at around 650 °C, and higher temperatures (such as ≥950 °C) cannot be achieved. At the same time, in order to prevent the molten salt reactor from overheating, the mole fraction of nuclear fuel is generally relatively low (usually 0.5% to 12%, at most 28%), resulting in the inability to effectively improve the power ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the inability of liquid fuel molten salt thermal reactors to achieve high outlet temperature, long service life, and low operating cost at the same time, and to be able to perform on-line feeding, on-line post-processing, and replacement of moderators without shutting down the reactor. to provide a three-channel molten salt reactor core structure and a three-channel molten salt reactor system

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