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高温气冷实验反应堆（ＨＴＲ－１０）的热气导管和它的同轴外壳，连接肩并肩分开布置的反应堆和蒸汽发生器压力容器，管内、外分别流过从堆芯底部到蒸汽发生器的高温氦气（７００ ℃或９５０ ℃）和反向的低温氦气（２５０ ℃或３００ ℃），它的热性能试验将在氦气试验回路上进行。描述了氦回路和热气导管试验段的技术特征。氦气试验回路由氦回路系统、冷却系统、氦净化、贮存和压力调节系统、氦中痕量杂质的取样分析系统、参数测量、数据采集与监控系统等组成。热气导管试验段具有三层套管式结构，内设氦气内加热器，试验热气导管和冷、热氦混合器，在被试热气导管内外形成７００℃和２５０℃或９５０℃和３００ ℃的加压氦气反向流动环境，用来研究的ＨＴＲ－１０热气导管的高温热性能和在运行工况下的完整性。
The HTR-10 hot gas conduit and its coaxial housing are connected to a reactor and steam generator pressure vessel located side-by-side and separated from each other by a high temperature from the bottom of the core to the steam generator Helium (700 ° C or 950 ° C) and reverse cryogenic helium (250 ° C or 300 ° C) will be tested on the helium test circuit. Describes the technical features of the helium loop and hot gas duct pilot section. The helium test loop consists of a helium loop system, a cooling system, a helium purification, storage and pressure regulation system, a sampling and analysis system for trace impurities in helium, a parametric measurement, data acquisition and monitoring system. The hot gas conduit test section has a three-layer casing structure with a helium internal heater, a test hot gas conduit and a cold and hot helium mixer. The hot gas conduit inside and outside the test hot gas conduit form 700 ° C. and 250 ° C. or 950 ° C. and 300 ° C. Pressurized helium reverse flow environment was used to investigate the high temperature thermal properties of the HTR-10 hot gas duct and its integrity under operating conditions.