Mounting structure of blade tip clearance sensor on double-layer casing and turbine engine

The invention provides a mounting structure of a blade tip clearance sensor on a double-layer casing and a turbine engine, and the mounting structure of the blade tip clearance sensor on the double-layer casing comprises a boss which can be fixedly arranged on an inner-layer casing and is provided with an axial mounting hole; the sealing seat can be fixedly arranged on the outer-layer casing, and an axial through hole is formed in the sealing seat; the gap measuring sensor is arranged in the axial mounting hole, and a lead of the gap measuring sensor can penetrate through the outer-layer casing and the axial through hole and is arranged on the outer side of the sealing seat; and the gland can sequentially penetrate through the axial through hole and the outer-layer casing and abut against the gap measurement sensor, and the side wall of the lower end of the gland is in threaded connection with the axial mounting hole. The method has the beneficial effects that the gap measurement sensor can be fixed on the in