| 摘要 |
power engineering industry. SUBSTANCE: face sealing contains rotating counter body, and sealing ring with the housing. The sealing inlet is provided with labyrinth of inclined passages and a ridge mounted in a minium permissible spaced relation to the sealing ring. The housing is provided with a projection from the side of the gas supply. The projection is overlapped with the inclined passages of the labyrinth. The working surface of the sealing ring is provided with three flat ring bands separated by the ring grooves of the ring body. The bands are connected to a discharge space through the passages and the discharge space is separated by secondary sealing rings from the fluid space. The counter body and the sealing ring are separated by a gas film by means of an aerostatic gas bearing. In the labyrinth sealing, supplying the sealing and the gas bearing, the gas is centrifugally separated. EFFECT: enhanced reliability. 2 dwg |
