IT1031996B - Limiting gap current-generated turbine oscillations - by reducing component of current in direction of rotation of oscillating vector - Google Patents
Limiting gap current-generated turbine oscillations - by reducing component of current in direction of rotation of oscillating vectorInfo
- Publication number
- IT1031996B IT1031996B IT2057875A IT2057875A IT1031996B IT 1031996 B IT1031996 B IT 1031996B IT 2057875 A IT2057875 A IT 2057875A IT 2057875 A IT2057875 A IT 2057875A IT 1031996 B IT1031996 B IT 1031996B
- Authority
- IT
- Italy
- Prior art keywords
- current
- vector
- gap
- rotation
- gap current
- Prior art date
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The method is applicable to steam or gas turbines or compressors with gap in contact-less seals between rotating and stationary components. The desired effect is achieved by reducing the circumferential component of the gap current in the direction in which the oscillating vector of the natural oscillation rotates, or by increasing a circumferential component of the gap current in the opposite direction. For units, other than compressors, in which the oscillation vector rotates in the same direction as the turbine rotor, the circumferential vector in the direction of rotor rotations may be so reduced that the gap current force component, which leads by 90 deg., is reduced, eliminated or reversed in direction. These results may be achieved by incorporating guide means such as vanes, ribs, profiles, ducts etc., in or before the gap.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2413655A DE2413655C3 (en) | 1974-03-21 | 1974-03-21 | Device for dynamic stabilization of the rotor of a gas or steam turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1031996B true IT1031996B (en) | 1979-05-10 |
Family
ID=5910771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2057875A IT1031996B (en) | 1974-03-21 | 1975-02-24 | Limiting gap current-generated turbine oscillations - by reducing component of current in direction of rotation of oscillating vector |
Country Status (5)
Country | Link |
---|---|
HU (1) | HU174193B (en) |
IT (1) | IT1031996B (en) |
PL (1) | PL105787B1 (en) |
RO (1) | RO90422A (en) |
YU (2) | YU39731B (en) |
-
1975
- 1975-02-19 YU YU39175A patent/YU39731B/en unknown
- 1975-02-24 IT IT2057875A patent/IT1031996B/en active
- 1975-03-20 HU HU75MA2666A patent/HU174193B/en unknown
- 1975-03-21 RO RO7581740A patent/RO90422A/en unknown
- 1975-05-19 PL PL17891575A patent/PL105787B1/en unknown
-
1981
- 1981-01-09 YU YU3381A patent/YU3381A/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL105787B1 (en) | 1979-10-31 |
RO90422A (en) | 1986-10-30 |
YU3381A (en) | 1984-06-30 |
HU174193B (en) | 1979-11-28 |
YU39175A (en) | 1982-08-31 |
YU39731B (en) | 1985-04-30 |
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