The invention discloses a
dry gas seal
system capable of automatically regulating a clearance, and a regulating method thereof. The
system comprises a static ring, a moving ring, springs, a sensor, adata acquisition unit, a computer and a sectional type
clapboard. The sensor is arranged on the sealed end surface of the static ring; the sensor is connected to an input end of the
data acquisition unit; an output end of the
data acquisition unit is connected with an input end of the computer; an output end of the computer link-controls the sectional type
clapboard; the multiple springs are fixedly arranged between the sectional type
clapboard and the non-sealed end surface of the static ring; a plurality of dynamical pressure slots are uniformly formed in the sealed end surface of the movingring along the circumferential direction; and the static ring sealed end surface and the moving ring sealed end surface are matched to form
dry gas seal. The sensor transmits acquired data to the computer, the data is processed so as to obtain a sealed end surface gas film clearance value, a
signal is provided to drive the sectional type clapboard to move, the springs are compressed, and the static ring bends and deflects for compensating the deformation of the end surfaces, so that the sealed end surfaces are tend to be parallel, the influence of the deformation on sealing is reduced, the stable operation of sealing is maintained, and the risk of seal failure is reduced.