High-temperature molten salt pressure pipe and pressure pipe type graphite-moderated high-temperature molten salt pile

Abstract

The invention discloses a high-temperature molten salt pressure pipe and a pressure pipe type graphite-moderated high-temperature molten salt pile. High-temperature molten salt only flows in the high-temperature molten salt pressure pipe which has high heat insulativity, so that temperature of a graphite-moderating agent outside the pressure pipe is remarkably lowered; control rods and the pressure pipes are staggered, and the control rods are arranged in a low-temperature graphite moderating agent area among the pressure pipes. Technical difficulty in arrangement of a control rod system is lowered substantially, arrangement number of the control rods can be increased remarkably, and reactive control capability can be improved; according to arrangement number and form of the pressure pipes, the molten salt pile is divided into multiple areas, each area is provided with an independent loop system, and the loop systems are mutually independent; area dividing and material changing are utilized to replace online chemical treatment, so that designing, building and running difficulty of a molten salt pile system is substantially simplified, and the loop systems are simplified substantially. A molten salt pile core, the control rods and the loop systems are simpler in arrangement mode, so that molten salt pile engineering realizability can be improved remarkably.

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...

AI Technical Summary

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

Images