Reactor core of medical isotope production reactor

Abstract

The invention relates to a reactor core of a medical isotope production reactor. The reactor core of the medical isotope production reactor comprises a reactor container, a control rod guide pipe, a control rod drive mechanism and a control rod, wherein a part of the control rod guide pipe stretches into the reactor core, the control rod drive mechanism is located in the control rod guide pipe, and the control rod is connected with the control rod drive mechanism. The reactor core of the medical isotope production reactor is characterized in that the control rod stretches to the position below the liquid level of a solution in the reactor container and is more than 2 cm away from the liquid level of the solution in the reactor container, and the control rod guide pipe is located above the liquid level. According to the reactor core of the medical isotope production reactor, the control rod is directly inserted into the solution of the reactor core, and therefore absorption of neutron by the stainless guide pipe and water in the pipe is avoided. According to the reactor core of the medical isotope production reactor, a safety rod, a compensation rod and an automatic adjusting rod are distinguished from one another, only a control guide pipe is eliminated, and an absorption body is directly inserted into feed liquid. In this way, stainless steel can be used as the absorption body, and a boron carbide absorption body and a graphite following body are eliminated. Due to the fact that the control guide pipe is eliminated, the isolation of fuel solutions and water is achieved, and no control rod guide pipe stretches out of the lower portion of the reactor container any longer.

Description

technical field [0001] The invention relates to a core of a medical isotope production reactor, in particular to a core of a medical isotope production reactor in the field of solution type nuclear reactors. Background technique [0002] The original design of the medical isotope production stack control system is composed of safety rods, compensation rods and automatic adjustment rod systems. The heap container has several vertical ducts, the fuel solution is outside the ducts, and the water in the ducts communicates with the heap pool. The control rod absorber moves up and down in the duct. The conduit is the boundary between the fuel solution and the pool water. If there is a leak in the weld between the conduit and the container at the bottom of the stack, the fuel solution will mix with the pool water, and the consequences will be serious; the conduit material is stainless steel, and there is water in the tube that will cause a great loss of reactivity to the stack; co...

AI Technical Summary

Problems solved by technology

Although this plan reduces the control rods and their vertical conduits, which greatly reduces the core absorber, it adds a small feed liquid storage tank outside the reactor and a pipeline with a certain length connected to it, which is not good for the sealing and containment of the solution; the inside of the pipeline and the small A part of the feed liquid remains at the bottom of the feed liquid storage tank and cannot be used

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