Super-high temperature liquid medium thermal convection experimental loop

Abstract

The invention discloses a super-high temperature liquid medium thermal convection experimental loop which comprises a linear track type box body heating furnace and a loop pipeline, wherein the linear track type box body heating furnace comprises a furnace body, a heater, a linear guide rail and a base frame; the loop pipeline comprises a melting tank, an extraction opening, a loop main body, an online sampling system, an air cooling dual-layer sleeve and an emptying pipe. Due to an optimized design of the linear track type box body heating furnace, specific temperature zone distribution required by thermal convection of the experimental loop is ensured; meanwhile, due to material selection and a structure of the loop pipeline, the requirement of performing a long-term corrosion experiment of a reactor candidate material in an super-high temperature thermal convection medium can be met. The super-high temperature liquid medium thermal convection experimental loop has the characteristics that the loop pipeline is simply and conveniently replaced, online sampling and installing can be realized, temperature controlling precision is high and the like, can be used for developing compatibility experiment research of the material in a flow medium, and is especially suitable for screening and developing the reactor high-temperature-corrosion-resisting material.

Description

technical field [0001] The invention belongs to the field of material corrosion, and in particular relates to an ultra-high temperature liquid medium thermal convection experimental loop. Background technique [0002] Nuclear structural materials in lead-based reactors will be corroded by lead-bismuth alloys under high temperature conditions, resulting in material thinning, and material structure failure may occur, which will affect the normal operation of the entire reactor and bring greater safety hazards to the reactor. When lead-based reactors have accident conditions (loss of cooling, flow blockage), the local temperature inside the reactor may reach ultra-high temperature (about 800°C), which will bring serious tests to the material properties of reactor internal components. For this accident condition At the same time, lead-based reactors have a wide range of uses, one of which can be designed as a high-temperature hydrogen production reactor, which has great advantag...

AI Technical Summary

Problems solved by technology

Since the experimental samples are pre-packaged in the quartz tube, the quartz tube circuit can only be used once, which is expensive, and the installation and removal process of the sample is also cumbersome.

Images