초록 ▼

A globe valve comprising: a control rod (70) which is movable in translation along a valve axis (XX′), handle means (90) for controlling movements of said rod in translation, a disk (74) fixed to one end of said rod; a body (12) having an inlet passage (14) and an outlet passage (16) therethrough fo

A globe valve comprising: a control rod (70) which is movable in translation along a valve axis (XX′), handle means (90) for controlling movements of said rod in translation, a disk (74) fixed to one end of said rod; a body (12) having an inlet passage (14) and an outlet passage (16) therethrough for passing a liquid, said passages giving access to a cavity (18) which is extended via a cylindrical orifice (22) disposed along said valve axis in order to receive said rod; a cage (36) lodged inside said cavity and within which said disk is capable of being moved by axial displacement of said rod; packing (46) surrounding a portion of said rod and disposed within said cylindrical orifice; a seat (28) which is removable from said body for cooperating with said disk in a closure position, said seat having a first face defining a sealing bearing surface for cooperating with said disk and a first annular thrust bearing orifice, and a second face defining a second annular thrust bearing surface; means for defining a third annular thrust bearing surface symmetrically about said axis and disposed in said cavity between the openings to said passages and at least substantially fixed relative to said body; means (26) for providing sealing between said second and third annular thrust bearing surfaces; and compression means (50), said compression means acting on a stack having the same axis as the said valve body and comprising: said packing, said cage, said seat, and said sealing means, whereby said packing and said sealing means are subjected to said compression in order to provide sealing respectively between said rod and the wall of said cylindrical orifice through the body, and between said seat and said body.

대표청구항 ▼

A globe valve comprising: a control rod which is movable in translation along a valve axis, handle means for controlling movements of said rod in translation, a valve disk fixed to one end of said rod; a body constituted by a single part having an inlet passage and an outlet passage therethrough for

A globe valve comprising: a control rod which is movable in translation along a valve axis, handle means for controlling movements of said rod in translation, a valve disk fixed to one end of said rod; a body constituted by a single part having an inlet passage and an outlet passage therethrough for passing a fluid to be controlled by said valve disk, said passages giving access to a cavity which is extended via a cylindrical orifice disposed along said valve axis in order to receive said rod; a cage lodged inside said cavity and within which said valve disk is capable of being moved by axial displacement of said rod; packing surrounding a portion of said rod and disposed within said cylindrical orifice, said packing being in contact with said rod and the wall of said cylindrical orifice and being supported by said cage; a seat which is removable from said body for co-operating with said valve disk in a closure position, said seat having a first face defining a sealing bearing surface for co-operating with said valve disk and a first annular thrust bearing surface, and a second face defining a second annular thrust bearing surface; means for defining a third annular thrust bearing surface symmetrically around said valve axis and disposed in said cavity between the opening of said passages and at least substantially fixed relative to said body, said second and third annular thrust bearing surfaces being inclined with respect to said valve axis; means for providing sealing directly between said second and third annular thrust bearing surfaces, said sealing means and said second and third thrust bearing surfaces cooperating together to provide a substantially complete axial and radial seal between said second and third thrust bearing surfaces, the size of said cage, said seat, and said sealing means being less, in planes perpendicular to said valve axis, than the diameter of said cylindrical cavity; and compression means, said compression means acting on a stack having the same axis as said valve and consisting in: said packing, said cage, said seat, and said sealing means, whereby said packing and said sealing means are both subjected to said compression in order to provide sealing respectively between said rod and said wall of the cylindrical orifice, and between said seat and said body, and whereby said packing may be removed from said body by said cage, said valve disk and said rod being movable by axial displacement of said rod so that said seat may be serviced.