| abstract |
The present invention relates to a kind of self forcing cooling refractory machinery seals device, rotating ring, stationary seat and the heat insulation loop of the sealing device are sleeved in shaft；Diversion trench is set on rotating ring；Toroidal shell is sleeved in heat insulation loop and stationary seat, and toroidal shell side and heat insulation loop fixing seal, the opposite side inner wall of toroidal shell and the outer round surface of stationary seat form a liquid medium annular entry, ring film group is sleeved in heat insulation loop and has gap with the external annulus of heat insulation loop, and the both sides outer edge of ring film group carries out full weld in a circumferential direction with stationary seat, heat insulation loop respectively；So as to form a cavity between toroidal shell, ring film group；The aperture connected with cavity is provided with the outer wall of toroidal shell；One liquid medium annular entry, cavity and keyhole formation cooling duct.By diversion trench and cooling duct there is provided liquid medium that vaporization occurs, cause mechanical seal occur unstable operation, sealing face leakage even seal failure the problems such as. |