Alkali metal sampling device

Abstract

The invention provides an alkali metal sampling device, which includes an alkali metal sampling assembly, an operation box and an atmosphere adjustment assembly, wherein the alkali metal sampling assembly is in fluid communication with the alkali metal circuit, and is used to extract alkali metal from the alkali metal circuit, and the operation box Sealingly matched with the alkali metal sampling component, used to operate the alkali metal sampling component, the atmosphere adjustment component is in fluid communication with the inner cavity of the alkali metal sampling component, and used to provide the required internal atmosphere environment for the alkali metal sampling component. The alkali metal sampling component is directly connected to the alkali metal circuit, thereby realizing the online sampling of the alkali metal circuit, avoiding the contact with the air during the sampling process, and the operation box and the atmosphere adjustment component that are tightly matched with the alkali metal sampling component are for Sampling of alkali metals provides an appropriate environment, thereby avoiding the contact of alkali metal samples with air during the whole process, ensuring the original properties of alkali metals as much as possible, and providing a guarantee for the accuracy of subsequent experiments or tests.

Description

technical field [0001] The present invention relates to a sampling device, more particularly, to a device for sampling alkali metals in a heat exchange circuit or an experimental circuit of a fast reactor. Background technique [0002] At present, materials such as alkali metal sodium, potassium, lithium, and sodium-potassium alloys are widely used as heat transfer media in the fields of chemical industry, fuel, metallurgy, pharmaceuticals, and nuclear energy. The presence of impurities in the above-mentioned alkali metals and alloys will affect its performance, especially the presence of impurities such as oxygen, carbon, and calcium in the alkali metals or alloys will affect the heat transfer performance of the material, and will also affect the use of the above materials. Adverse effects on the mechanical performance, service life and reliability of the equipment. [0003] In practical applications, in order to study the properties of alkali metals and analyze the impuri...

AI Technical Summary

Problems solved by technology

[0004] At present, the sampling conditions of the fast reactor such as the sodium-cooled fast reactor such as the heat exchange circuit of the primary circuit are more complicated. The sampling pipe of the existing mobile sampling container is blocked with waste sodium and exposed to the air. Sodium readily enters the sampling vessel and contaminates the sample as it is taken due to the inability to flush the sampling leg and sampling vessel thoroughly with the alkali metal

In addition, the sampling equipment for the primary circuit of the sodium-cooled fast reactor is used for sampling radioactive sodium in the primary circuit of the sodium-cooled fast reactor, but its structure is complex and the equipment is huge, so it is not suitable for conventional alkali metal sampling

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