Invention Grant
US07946591B2 Combined labyrinth seal and screw-type gasket bearing sealing arrangement
有权
组合迷宫式密封和螺旋式垫圈轴承密封布置
- Patent Title: Combined labyrinth seal and screw-type gasket bearing sealing arrangement
- Patent Title (中): 组合迷宫式密封和螺旋式垫圈轴承密封布置
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Application No.: US12067773Application Date: 2006-09-21
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Publication No.: US07946591B2Publication Date: 2011-05-24
- Inventor: Otto Pabst , Franco Gadrino , Michael Kleinlercher
- Applicant: Otto Pabst , Franco Gadrino , Michael Kleinlercher
- Applicant Address: LU Luxembourg
- Assignee: Wilic S.AR.L.
- Current Assignee: Wilic S.AR.L.
- Current Assignee Address: LU Luxembourg
- Agency: K&L Gates LLP
- Priority: ITBZ2005A0049 20050921; ITBZ2005A0062 20051129; ITBZ2005A0063 20051129
- International Application: PCT/IB2006/002619 WO 20060921
- International Announcement: WO2007/034305 WO 20070329
- Main IPC: F16J15/16
- IPC: F16J15/16

Abstract:
A bearing sealing arrangement for rotating machines uses a radially-acting labyrinth seal (2) to minimize bearing lubricant leakage and an axially-acting screw-type gasket (3) to return what fluid escapes through the labyrinth seal to the bearing (10). In embodiments, the labyrinth seal uses rings (4) with plastic wear surfaces formed about internal metal bands, the plastic forming corresponding profiles on the ends (27,28) of the bands so that the profiles interlock when overlapped to form the rings. The screw-type gasket preferably includes rotor-mounted helical fillets (22) formed in a section (21) that is retained in a seat (20) on the rotor. The section in embodiments is retained by inserting a ring-shaped key (23) into the section, thereby forcing the section into undercuts of the seat. The arrangement is particularly useful in wind machines, such as wind-turbines.
Public/Granted literature
- US20080246224A1 Combined Labyrinth Seal and Screw-Type Gasket Bearing Sealing Arrangement Public/Granted day:2008-10-09
Information query
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