DEVICE FOR DETERMINING HEAT CONDUCTIVITY OF LOOSE MATERIALS Russian patent published in 2025 - IPC G01N25/18 

FIELD: measuring.

SUBSTANCE: invention relates to measurement equipment, in particular to devices for determining heat conductivity coefficients of bulk materials. Disclosed is a device for determining heat conductivity of bulk materials, comprising a housing in the form of a cylinder, outside of which an insulating material is fixed – mullite-silica wool, lower limiter, in which thermocouples are installed in one plane, working part of which is made with possibility of being in analysed material layer located in zone between heater and wall, upper limiter configured to be located in the housing above the analysed material, a heater. Housing is made of heat-resistant material, on the outer surface of which eccentric locks are fixed. Lower limiter is made in the form of a lower plate of heat-resistant material, in which there are through holes, in which thermocouples are installed symmetrically to the axis and through equal distances, at the same time the ends of the thermocouples are fixed on a support, in the centre of which there is a cup, on which a cover is installed, in which there are made holes. Graphite heater is connected to the output of the step-down transformer through water-cooled copper current leads, which are installed in the cup through holes in the cover. Outputs of the thermocouples are connected to the input of the analogue signal input module, the output of which is connected to the analogue input of the programmable logic controller.

EFFECT: wider range of materials analysis.

3 cl, 3 dwg