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AssigneeSulzer Pumpen AG
InventorsTomas Pesek, Walter Bolliger
Estimating the term…
Shown with the invention are self-supporting wear rings (1a, 1b) for flow machines with a fluid, which are arranged at a radial sealing gap (18) to a rotor (9), and of which the outer jacket surface (3) is provided with a wear surface (2). The wear rings (1a, 1b), which are fixed in the axial direction, consist of a material with lower thermal expansion coefficients than their support and lie hollowly on their inner jacket surface, with a first conical holder surface (8) encountering with the apex of its cone a second holder surface (8″), which is designed as straight shoulder, in the plane of the latter (19) on the axis of rotation or encountering a second holder surface, which is designed as a conical holder surface (8′), at its cone apex on the axis of rotation (20).
Flow machine for a fluid, comprising a radial sealing gap (18) between stator parts (12a, b, c, d) and a rotor (9), with a self-supporting wear ring (1a, 1b), of which the outer jacket surface (3) is provided with a wear surface (2) and which is axially fixed in the direction of the axis of rotation (20) of the rotor (9), being provided at the sealing gap, characterized in that the wear ring (1) consists of a material with a lower thermal expansion than parts (4, 14, 15) on which it is supported;
Flow machine for a fluid, comprising a radial sealing gap (18) between stator parts (12a, b, c, d) and a rotor (9), with a self-supporting counter ring (26), of which the inner jacket surface is provided with a wear surface (2′) and which is axially fixed in the direction of the axis of rotation (20) of the rotor (9), being provided at the sealing gap, characterized in that the counter ring (26) consists of a material with a lower thermal expansion than parts (4) on which it is supported;
Dependencies are inferred from the claim text.