Flow machine for a fluid with a radial sealing gap between stator parts and a rotor
US6494675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/943
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Self-supporting wear rings (1a, 1b) for fluid flow machines are arranged at a radial sealing gap (18) to a rotor (9), and have an outer jacket surface (3) 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 a 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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.