A High Temperature Molten Salt Pressure Tube and Pressure Tube Graphite Moderated High Temperature Molten Salt Reactor

Abstract

The invention discloses a high-temperature molten salt pressure tube and a pressure tube type graphite moderation zone refueling molten salt reactor. The high-temperature molten salt only flows in the high-temperature molten salt pressure tube. The temperature of the external graphite moderator is significantly lowered, and the control rods are interlaced with the pressure tubes, and are arranged in the low-temperature graphite moderator area between the pressure tubes; the invention not only greatly reduces the technical difficulty of the control rod system layout, but also can significantly improve the control rod The number of layouts enhances the ability to control reactivity; according to the number and form of pressure pipe layout, the molten salt reactor is divided into multiple areas, each area is equipped with an independent loop system, and each loop system is independent of each other; the use of partitioned refueling instead of online chemical treatment , which greatly simplifies the design, construction and operation difficulties of the molten salt reactor system, and greatly simplifies the circuit system; the layout of the core, control rods and circuit system of the molten salt reactor proposed by the present invention is simpler, which can significantly improve the realization of the molten salt reactor project. sex.

Description

technical field [0001] The invention belongs to the technical field of nuclear reactors, and in particular relates to a high-temperature molten salt pressure tube, a molten salt reactor core arrangement, and an arrangement mode of a loop system. Background technique [0002] Molten salt reactor is one of the six candidate reactor types selected by the Generation IV International Nuclear Energy Forum. It is also the only liquid fuel reactor. It has unique advantages in inherent safety, economy, sustainable development of nuclear fuel, and nuclear proliferation prevention. In a molten salt reactor, the molten salt containing fissile material flows through the core at a temperature higher than 500°C and reaches a critical state, and the liquid fuel undergoes fission reaction to release heat, which is absorbed and taken away by itself, without the need for additional coolant . The structure of the molten salt reactor is simple, and the continuous operation of the molten salt re...

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Problems solved by technology

[0004] Aiming at the problems that the high-temperature liquid fuel molten salt reactor requires online chemical treatment, frequent fuel injection, and technical difficulty in arranging the control rod system, the invention proposes a simpler and safer arrangement of the core and circuit system of the high-temperature liquid fuel molten salt reactor The reactivity control method further improves the feasibility of molten salt reactor engineering

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