Experimental apparatus suitable for realizing oxygen-controlled reaction

Abstract

The invention provides an experimental apparatus suitable for realizing an oxygen-controlled reaction, and the experimental apparatus is used for oxygen-controlled related experiments under the conditions of different temperatures and oxygen concentration measurement control in lead-bismuth. The device can be used for solving the problems of tight connection, disassembly and measuring accuracy of the device under a room-temperature solid lead-bismuth state and consists of a corrugated pipe, an oxygen measurement instrument, a thermocouple, a stirrer, a connecting piece, a sealing flange, an air inlet, an air outlet and a liquid outlet. According to the experimental apparatus, the corrugated pipe is adopted for connection and sealing, the ascending and descending of the stirrer and the oxygen measurement instrument are realized, and the problem that the reaction apparatus cannot be sealed under the room-temperature solid lead-bismuth state can be solved; simultaneously, the thermocouple and the oxygen measurement instrument are connected by virtue of the connecting piece, so that the synchronous ascending and descending of the thermocouple and the oxygen measurement instrument is realized, the temperature measurement of liquid lead-bismuth adjacent to the oxygen measurement instrument is realized, and the temperature corresponding to the signal of the oxygen measurement instrument is more accurate; A blade of the stirrer is in threaded connection with a metal connecting rod at the upper end, so that the disassembly is convenient, and simultaneously blades of different types can be replaced so as to realize different liquid lead-bismuth flow field flow field experiments; and the sealing flange is used for connecting and sealing the oxygen measurement instrument and the thermocouple, so that replacement is convenient. The design of the device is especially suitable for the oxygen-controlled experimental research on the liquid lead-bismuth with different temperature and flow velocity parameters.

Description

technical field [0001] The invention relates to a pre-research device for the oxygen control technology in an accelerator-driven subcritical reactor (ADS), which provides a simple and feasible research platform for the oxygen control technology applied to the ADS reactor in the future. Background technique [0002] Lead-bismuth alloys have become the preferred candidate materials for ADS spallation targets and coolants due to their special thermophysical and chemical properties, and have been extensively studied worldwide. An important issue with the use of lead-bismuth as coolant in ADS is the corrosion of structural materials in the circuit. Due to the high solubility of the main alloy components of steel in the nuclear system, if no protective measures are implemented, the corrosion of steel by liquid lead and bismuth through mass dissolution is very serious. Corrosion of structural materials is a major challenge for lead-bismuth as a nuclear coolant for ADS and advanced...

AI Technical Summary

Problems solved by technology

Generally, foreign experimental devices are in a closed environment, and the sealing flange of the device is sealed and opened under the state of heating to melt the lead and bismuth, so as to realize the lifting of the oxygen meter, thermocouple and other devices that need to go deep into the lead and bismuth liquid. With the help of glove box, built-in heating furnace and other equipment, it is inconvenient to operate

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