| 摘要 |
<p>A multi-plate, anti-cavitation fluid pressure reduction device includes a stack of annular plates having a hollow center, a fluid inlet at an inner perimeter thereof and a fluid outlet at an outer perimeter thereof. Selected ones of the plates each define at least one pressure reduction stage including an orifice having a well-rounded or well-tapered inlet and an abrupt discharge, and a communication passage coupled to the discharge. Each pressure reduction stage communicates with another pressure reduction stage in an adjacent one of the annular plates in the stack. Two or more pressure reduction stages are coupled in series to define a pressure reduction flow path from the fluid inlet to the fluid outlet. Each pressure reduction stage is preferably characterized by a velocity head loss greater than 75% and a corresponding pressure recovery less than 25%. The fluid pressure reduction device is typically incorporated into a fluid control valve.</p> |
