High-temperature oxygen-controlled magnetic drive liquid metal rotating corrosion experimental device and method

Abstract

The invention discloses a high-temperature oxygen-controlled magnetic drive liquid metal rotating corrosion experimental device and a method. The device comprises a tiltable supporting frame, an innertank body, an outer tank body, a tank lid, a sealing assembly, a motor and a reducer, an outer magnetic rotor, an isolation sleeve, an inner magnetic rotor, a clamping coupler, a transmission shaft,a disc-shaped sample holder, a smelting tank, a material inlet, a gas inlet and outlet, a pressure gauge, a pressure reducing valve, a main heater, a spare heater, an insulation layer, a temperature sensor, a main control cabinet and other parts. The motor and the reducer drive the inner magnetic rotor through a magnetic coupler to achieve the non-contact torque transmission of a static seal structure and drive the sample holder to rotate in the liquid metal. According to the principle of relative motion, the continuous flow corrosion experimentsof low activated steel and a welding seamthereofare carried out in the liquid metalto observe the surface topography of the sample and analyze the corrosion mechanism and to provide basic data for the compatibility study between the liquid metal and fusion reactor structural materials. According to the high-temperature oxygen-controlled magnetic drive liquid metal rotating corrosion experimental device and the method, the reliability and workefficiency of the device are greatly improved.

Description

technical field [0001] The invention belongs to the field of corrosion compatibility between liquid metal and fusion reactor cladding structure materials, and specifically relates to a high-temperature oxygen-controlled magnetic force-driven liquid metal rotary corrosion experiment device and method. Background technique [0002] The cladding is responsible for the functions of tritium production, neutron proliferation, shielding of high-energy radiation damage, and heat removal. It is a key component in the International Thermonuclear Experimental Reactor (ITER) and future commercial fusion power plants. Due to the advantages of high tritium multiplication rate, high heat conversion efficiency, real-time tritium extraction outside the reactor, and good adaptability to the complex geometry of the tokamak device, the liquid metal cladding has great research and application prospects. It is one of the mainstream design schemes of international fusion research institutes. Alth...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing liquid metal experimental circuit technology, provide a high-temperature oxygen-controlled magnetic force-driven liquid metal rotary corrosion experiment device and method, and solve the problem of the impact of liquid metal on fusion reactor structural materials and their welding. The problems of purification, sealing, and continuity that are difficult to solve in crevice corrosion experiments have avoided technical defects such as complex pipeline circuits, high driving power of liquid metal, and hidden dangers of leakage caused by liquid metal corrosion on the device itself.

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