HEAT RECEIVER Russian patent published in 2023 - IPC G01K17/08 

FIELD: techniques for measuring heat flows.

SUBSTANCE: invention can be used for long-term measurement of heat flows with a wide dynamic range and increased measurement accuracy under conditions of severe mechanical loads when conducting gas-dynamic tests. A heat receiver is claimed, containing a base in the form of a circle with a calibration resistor, a thermometric thermistor and a thermopile of series-connected thermocouples with hot thermal junctions located in the centre of the circle and cold thermal junctions located at the edges of the circle, a T-shaped heat-receiving element in the form of a circle with a temperature concentrator in the centre, which is attached by the base of its T-shaped leg to the centre of the base, a heat receiver body, a cable with connecting conductors, which also has an additional body of a sensing element with thermal conductivity corresponding to the thermal conductivity of the surface on which the heat flow is measured, and in which the heat-receiving element with the base is enclosed. Attached to the reverse side of the additional housing of the sensitive element is a switching unit with a ring securing it along the thread on the inner surface of the additional housing of the sensitive element with a ring, and the space of the housing of the sensitive element between the switching unit and the base is filled with a compound with low thermal conductivity. The additional housing of the sensing element along its outer diameter is fixed to the inner surface of the heat receiver body on the side exposed to the heat flow, and the conductors of the connecting cable are connected through intermediate contacts on the switching unit to the hot and cold ends of the thermopile, to the ends of the calibration resistor and the ends of the thermometric thermistor.

EFFECT: increase in the durability and strength of the sensor under conditions of increased mechanical loads while expanding the dynamic range of measured heat flows and reducing measurement errors.

1 cl, 1 dwg