Valve with a device for the attenuation of acoustic vibrations self-excited by the working medium

摘要

A valve includes a diffuser for the recovery of static pressure energy. The point of flow separation is stabilized by introducing, into the region where the flow separation point can occur, a volume of the working medium from a portion of the valve having a higher pressure than such region. By stabilizing the flow separation point against vibration, resulting noise is minimized.