FIELD: machine building.
SUBSTANCE: seal consists of case, internal floating "oil-gas" O-ring with raised surface, external floating O-ring with damping pads locked by lock screws. Note here that, at least, one locking screws locks said O-ring against turning relative to case thanks to availability of elongated head. Additional flexible ring is arranged between outer O-ring and case to make mechanical damper to add to seal stiffness. External O-ring outer surface and case inner surface are provided with ledges shifted relative to each other in circular direction. External O-ring is provided with channel to communicate damping film location zone adjoining damping pad outer surface with clearance between external O-ring and seal case, and compressor housing cover.
EFFECT: reliable seal of rotary shaft, increased stiffness and better damping properties.
5 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SUPPORT AND SEALING UNIT | 2014 |
|
RU2568370C1 |
| METHOD OF BALANCING AXIAL LOADS ON BEARING SURFACE OF THRUST BEARINGS AND THRUST BEARING THEREFOR (VERSIONS) | 2014 |
|
RU2578938C2 |
| REVERSIBLE THRUST SLIDING BEARING (VERSIONS) | 2019 |
|
RU2722222C1 |
| REVOLVING SHAFT SEAL | 0 |
|
SU1364813A1 |
| SHAFT SEAL | 0 |
|
SU1645695A1 |
| REVOLVING SHAFT SEAL | 0 |
|
SU1302065A1 |
| TWO-CYCLE CENTRIFUGAL COMPRESSOR | 2012 |
|
RU2518785C2 |
| REVERSIBLE SLIDING BEARING (OPTIONS) | 2017 |
|
RU2685404C2 |
| REVERSIBLE PLAIN BEARING (EMBODIMENTS) | 2019 |
|
RU2722107C1 |
| SHAFT SEAL | 0 |
|
SU1483148A1 |
