Patent ID: 8162325
Filing Date: 2012-04-24
Classification: F16J

Abstract:
1. A multipart packing ring comprising a plurality of ring segments and a plurality of sealing segment which are positioned around an imaginary center of said packing ring, each of said plurality of ring segments including a curved main part defining circumferentially opposite radial end surfaces, and an axially-extending shoulder part which extends from a radially outer region of said curved main part, said shoulder part defining a radially inwardly facing, tangentially-extending sealing surface, and each of said sealing segments including a curved main part defining circumferentially opposite first radial end surfaces and tangential end surfaces, and a curved axially-projecting part defining circumferentially opposite second radial end surfaces, said curved main part of each said sealing segment and associated curved axially-projecting part together defining a radially inwardly facing inner circumferential surface, said ring segments and said sealing segments alternatingly abutting one another and engaged such that said circumferentially opposite radial end surfaces of said curved main portion of said ring segments face said circumferentially opposite second radial end surfaces of said axially-projecting parts of said sealing segments and provide respective first wear gaps therebetween, the tangential end surfaces of said curved main part of the sealing segments abutting the tangentially-extending sealing surfaces of the shoulder parts of adjacent ring segments and respective circumferentially opposite radial first end surfaces of said main parts of adjacent sealing segments facing one another and set apart to from second wear gaps.