Patent ID: 6032696
Filing Date: 2000-03-07
Classification: B05B,F16L,Y10T

Abstract:
A repair apparatus for a bottom opening nozzle of a vessel having a corrosion resistant lining, wherein the vessel has a breached corrosion resistant lining in the area of the nozzle, said repair apparatus comprising:an internal flange having an upper surface, a lower surface, an outside end surface and an inside end surface;an insert tube having an outside diameter sized to permit insertion through the nozzle and of sufficient length to extend completely through the nozzle and extend beyond a lowermost portion of the nozzle, said insert tube having an inside surface, and an external surface having an upper end portion, said upper end portion of the external surface being in contact with and integral with the inside end surface of the internal flange, the external surface of the insert tube being threaded below the lowermost portion of the nozzle;a tantalum liner covering said inside surface of the insert tube, the upper surface of the internal flange, the outside end surface of the internal flange and at least a portion of the lower surface of the inside flange;a thrust plate flange threadable over the external surface of the insert tube below the lowermost portion of the nozzle, said thrust plate flange being provided with threaded bolt holes; andbolts for threading into said bolt holes for forcing said thrust plate flange in a direction away from the lowermost portion of said nozzle thus forcing said insert tube and attached internal flange in a direction which causes the tantalum lined lower surface of the internal flange and the corrosion resistant lining of the vessel to seal against an internal flange gasket located between said lower surface of the internal flange and the corrosion resistant lining of the vessel.