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US 8,011,666 B2Granted
Dynamic brush seal
AssigneeSnecma
InventorDaniel Georges Plona
Life of this patent
Estimating the term…
Abstract
A seal capable of providing a seal for an air gap between a rotor and a stator. The seal incorporates a container for the textile insulators fixed on the rotor or the stator. The textile insulators are subjected, on one side, to an upstream pressure and, on another side, to downstream pressure, the upstream pressure being greater than the downstream pressure. The textile insulators are supported on the stator or the rotor so as to be at an angle to the side of the seal where the pressure is lower, namely the downstream pressure.
Claims14
A seal with a brush, comprising:
- non-metallic textile insulators, capable of providing a seal for an air gap between a rotor and a stator;
- a container containing the textile insulators, the container being fixable on the rotor or on the stator and the container including
- an internal envelope on which the textile insulators are wound and an external envelope which surrounds the textile insulators, distal ends of the textile insulators being extended radially outward toward the rotor or the stator,
- an upstream ring and a downstream ring placed between the external envelope and the textile insulators, the upstream ring and the downstream ring including an arcuate portion to surround the textile insulators wound on the internal envelope, and
- an opening from which the distal ends of the textile insulators protrude, the textile insulators being subjectable, on one side, to an upstream pressure, and on another side, to a downstream pressure, the upstream pressure being greater than the downstream pressure, and the distal ends of the textile insulators configured to bend at an angle to the downstream side of the seal where the pressure is lower when the ends are supported on the stator or on the rotor.
2 more elements
Dependencies are inferred from the claim text.