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公开(公告)号：JP2000097002A
公开(公告)日：2000-04-04
申请号：JP21004299
申请日：1999-07-26
Applicant: GEN ELECTRIC
Inventor： TURNQUIST NORMAN ARNOLD , DINC OSMAN SAIM , RELUZCO GEORGE ERNEST , CORNELL DANIEL RICHARD , CROMER ROBERT HAROLD , ROBBINS KENNETH ELMER , WOLFE CHRISTOPHER EDWARD
Abstract: PROBLEM TO BE SOLVED: To provide a seal assembly using brush seal for minimizing the steam leak in a steam path between a rotary shaft of a turbine and a casing surrounding in the circumferential direction in the turbine region of a steam turbine. SOLUTION: A steam turbine 10 having a shaft 12 and a first (for example, high pressure) turbine section 16 includes a first bearing 20 isolated in the longitudinal direction from the first turbine section, and in the longitudinal direction, further a first brush seal assembly 22 is provided which is positioned between the first turbine section and the first bearing and has bristles arranged near the shaft in the radial direction. The steam turbine does not include any backup seal for the bristles of the first brush seal assembly. A second brush seal assembly 38 is positioned between the first turbine section 16 and a second (for example, middle pressure) turbine section 34, and between these no interposed bearing exists.
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公开(公告)号：CH668454A5
公开(公告)日：1988-12-30
申请号：CH238685
申请日：1985-06-05
Applicant: GEN ELECTRIC
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公开(公告)号：GB2162587B
公开(公告)日：1988-05-05
申请号：GB8514081
申请日：1985-06-04
Applicant: GEN ELECTRIC
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公开(公告)号：DE3519372A1
公开(公告)日：1986-02-06
申请号：DE3519372
申请日：1985-05-30
Applicant: GEN ELECTRIC
Inventor： ROBBINS KENNETH ELMER , RUGGLES STEPHEN GARRISON , DUNCAN DAN , WILLIAMS JOHN CLIFTON , TUNG STEPHEN KIN-KEUNG , SUMNER WILLIAM JAMES , DINH CUONG VAN
Abstract: A stage of an axial flow turbine includes a plurality of spaced apart buckets and a plurality of spaced apart nozzle partitions, each plurality respectively circumferentially aligned about and axially spaced from each other along a rotor of the turbine. The nozzle partitions are circumferentially spaced such that a minimum throat extends a predetermined radial distance from the root, thereby forming a converging-diverging flow passageway between nozzle partitions. The trailing edge of the nozzle partitions are disposed to include axial and tangential lean with respect to the rotor. Buckets include a plurality of covers respectively connecting the tips and having a single outward radially extending sealing rib on the radially outer surface of each cover, wherein each rib is tangentially aligned with respective adjacent ribs. Buckets are overtwisted to compensate for untwist at operational speed to achieve optimum efficiency. Buckets are circumferentially spaced to provide a converging-diverging channel therebetween and include lashing for providing mechanical coupling at operational speed.
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公开(公告)号：DE69934846T2
公开(公告)日：2007-10-18
申请号：DE69934846
申请日：1999-07-14
Applicant: GEN ELECTRIC
Inventor： DINC OSMAN SAIM , CORNELL DANIEL RICHARD , ROBBINS KENNETH ELMER , TURNQUIST NORMAN ARNOLD , RELUZCO GEORGE ERNEST , CROMER ROBERT HAROLD , WOLFE CHRISTOPHER EDWARD
Abstract: A steam turbine (10) having a shaft (12) and a first (e.g., highpressure) turbine section (16). A first embodiment also includes a first bearing (20) longitudinally spaced apart from the first turbine section and further includes a first brush-seal assembly (22), having bristles, longitudinally positioned between the first turbine section and the first bearing and radially positioned proximate the shaft. The steam turbine is devoid of any backup seal to the bristles. In a second embodiment, a second brush seal assembly is positioned between the first and second (e.g. intermediate-pressure) turbine sections which lack any intervening bearing.
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Patent Agency Ranking
公开(公告)号：DE3413628C2
公开(公告)日：1996-09-19
申请号：DE3413628
申请日：1984-04-11
Applicant: GEN ELECTRIC
Inventor： ROBBINS KENNETH ELMER , SUMNER WILLIAM JAMES
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公开(公告)号：FR2544792B1
公开(公告)日：1989-04-21
申请号：FR8406462
申请日：1984-04-25
Applicant: GEN ELECTRIC
Inventor： ROBBINS KENNETH ELMER , SUMNER WILLIAMS JAMES
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公开(公告)号：IT8620585D0
公开(公告)日：1986-05-28
申请号：IT2058586
申请日：1986-05-28
Applicant: GEN ELECTRIC
Inventor： MILLER EDWARD HARRY , ROBBINS KENNETH ELMER
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公开(公告)号：GB2138892B
公开(公告)日：1987-12-09
申请号：GB8410399
申请日：1984-04-24
Applicant: GEN ELECTRIC
Inventor： ROBBINS KENNETH ELMER , SUMNER WILLIAM JAMES
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公开(公告)号：IT8521318D0
公开(公告)日：1985-06-27
申请号：IT2131885
申请日：1985-06-27
Applicant: GEN ELECTRIC
Inventor： ROBBINS KENNETH ELMER , RUGGLES STEPHEN GARRISON , DUNCAN DAN , WILLIAMS JOHN CLIFTON , TUNG STEPHEN KIN-KEUNG , SUMNER WILLIAM JAMES , DINH COUNG VAN
Abstract: A stage of an axial flow turbine includes a plurality of spaced apart buckets and a plurality of spaced apart nozzle partitions, each plurality respectively circumferentially aligned about and axially spaced from each other along a rotor of the turbine. The nozzle partitions are circumferentially spaced such that a minimum throat extends a predetermined radial distance from the root, thereby forming a converging-diverging flow passageway between nozzle partitions. The trailing edge of the nozzle partitions are disposed to include axial and tangential lean with respect to the rotor. Buckets include a plurality of covers respectively connecting the tips and having a single outward radially extending sealing rib on the radially outer surface of each cover, wherein each rib is tangentially aligned with respective adjacent ribs. Buckets are overtwisted to compensate for untwist at operational speed to achieve optimum efficiency. Buckets are circumferentially spaced to provide a converging-diverging channel therebetween and include lashing for providing mechanical coupling at operational speed.
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