Fiber bragg grating temperature sensor with built-in heat conduction liquid

The utility model provides a fiber bragg grating temperature sensor with built-in heat conduction liquid. The device comprises a fiber bragg grating temperature sensor measurement sensing part and a sensor protection part, the sensor protection part comprises a high-strength temperature conduction shell; the high-strength temperature conduction shell wraps the fiber bragg grating temperature sensor measurement sensing part. The fiber bragg grating temperature sensor measurement sensing part comprises a temperature-sensitive fiber bragg grating sensor element. Wherein the high-strength temperature-conducting shell is provided with a sensor internal cavity, the sensor internal cavity is filled with heat-conducting liquid, and the temperature-sensitive fiber grating sensor element is arrangedin the sensor internal cavity and surrounded by the heat-conducting liquid. The beneficial effects of the utility model are that the internal cavity of the sensor is filled with the heat conduction liquid, so that the ambien