Fused salt flowing corrosivity and thermal stability testing device

The invention discloses a molten salt flowing corrosivity and thermal stability testing device and method, and belongs to the field of thermal physical property testing of energy storage high-temperature molten salt. The device comprises an experimental test subsystem, a heating constant-temperature subsystem and an information acquisition and control subsystem, the experimental test subsystem comprises a W-shaped quartz tube, an air pump and a molten salt tank; the W-shaped quartz tube comprises a first quartz tube, a second quartz tube and a third quartz tube which are vertical, and the lower ends of the three vertical quartz tubes are communicated and are used for accommodating high-temperature fused salt to be measured. The dynamic and static thermal stability of the fused salt is detected by detecting the penetration rate of infrared rays to the capillary tube, and meanwhile, the corrosivity of the fused salt in two states of long-term immersion and scouring can also be detected. The detection of the fus