Method and arrangement to rapidly lower the rotary speed of...

B - Operations – Transporting – 04 – B

Patent

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Details

B04B 9/00 (2006.01) B04B 9/08 (2006.01) B04B 9/14 (2006.01) F16D 57/00 (2006.01)

Patent

CA 2425626

In a method of rapidly lowering the rotary speed of a rotating rotor body in a centrifugal separator the lowering of the rotary speed is initiated, when a disturbing unbalance or vibrations have occurred. A space between the rotor body and a stationary casing which surrounds the rotor body is supplied with foam or with an aerosol of a liquid in a gas, when unbalance or vibrations over a certain level have occurred. The rotor body is retarded by the friction, which is obtained between the rotor body, the foam or aerosol and the casing.In an arrangement to lower the rotary speed of a rotating rotor body in a centrifugal separator the lowering is initiated when a disturbing unbalance or disturbing vibrations has occurred. Means are arranged at a certain unbalance or certain vibration level to activate a foam generating device or a device that creates an aerosol for the purpose of filling a space between the rotor body and a casing which surrounds the same with foam or aerosol.

Dans un procédé de réduction rapide de la vitesse de rotation d'un corps rotor rotatif d'un séparateur centrifuge, la réduction de la vitesse rotative est initiée à l'apparition d'un déséquilibre ou de vibrations engendrant des perturbations. Un espace entre le corps rotor et un boîtier stationnaire qui entoure le corps rotor est garni de mousse ou d'un aérosol liquide dans un gaz lorsque le déséquilibre ou les vibrations qui se produisent dépassent un certain niveau. Le corps rotor est ralenti par le frottement qui est obtenu entre le corps rotor, la mousse ou l'aérosol et le boîtier. Dans un système de réduction de la vitesse de rotation d'un corps rotor rotatif dans un séparateur centrifuge, la réduction est initiée quand un déséquilibre perturbant ou des vibrations perturbantes apparaissent. Des moyens sont conçus avec un certain niveau de déséquilibre ou de vibrations pour activer un dispositif générateur de mousse ou un dispositif qui créée un aérosol en vue du remplissage de mousse ou d'un aérosol un espace situé entre le corps rotor et un boîtier qui entoure ce dernier.

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