Gradient tungsten-rhenium thermocouple

The utility model provides a gradient tungsten-rhenium thermocouple and belongs to the technical field of tungsten-rhenium thermocouples. The gradient tungsten-rhenium thermocouple comprises a plurality of insulating tubes. Along the length direction of the insulating tubes, the plurality of insulating tubes are in gradient arrangement and are provide with temperature-sensitive members respectively. Compared with the prior art, the temperature measurement task, which can only be realized by a plurality of conventional tungsten-rhenium thermocouples in the prior art, can be realized by the above single gradient tungsten-rhenium thermocouple. The temperature measurement at different positions along the length direction of the insulating tubes can be realized by the gradient tungsten-rhenium thermocouple. Therefore, the temperature measurement reliability and the temperature measurement stability are ensured. Meanwhile, production requirements can be met at the same time.