| abstract |
The invention provides a double thermocouple large heat sink structure plunger heat flow sensor, which belongs to the technical field of environmental radiation heat testing, and includes a convex heat sink, a K-type thermocouple, a casing and a mounting shell, and the convex heat sink is threadedly connected to the casing. , The sensor mounting shell is screwed with the sensor shell and the test tool respectively. There are two K-type thermocouples, which are fixed on the side of the convex heat sink close to the shell by laser spot welding. The two K-type thermocouples are in the convex shape. There is a height difference in the axial direction of the heat sink, and the thermocouple wire of the K-type thermocouple extends along the wiring groove to the end of the convex heat sink away from the casing. Compared with the prior art, the invention solves the problems that the maximum range of the plunger type heat flow sensor is insufficient, the data survival rate and measurement accuracy cannot be guaranteed in extreme environments, and has outstanding substantive features and significant progress. |