Centrifugal pump mechanical sealing structure with flushing system

The utility model discloses a centrifugal pump mechanical sealing structure with a flushing system, which comprises two groups of mechanical sealing structures mounted on a centrifugal pump rotating shaft, and the first group of mechanical sealing structure comprises a first moving ring and a first static ring; the second group of mechanical sealing structure comprises a second moving ring and a second static ring; the device is characterized in that the sealing end face of the first mechanical sealing structure is communicated with a high-pressure pipeline which is connected with a high-pressure flushing pump; the sealing end surface of the second group of mechanical sealing structure is communicated with a white oil tank and a white oil circulating pipeline; the white oil tank is connected with a nitrogen pipeline; according to the mechanical sealing structure, through the series arrangement mode of the movable rings and the static rings and the series arrangement mode of the movable rings and the static ri