| 摘要 |
<p>Valve for eliminating vibrations at part load and reducing fluctuations in pressure downstream of the valve including a shutter (1, 1') interacting with a seat (2) provided with a crenellated part (10) located around the part of the seat (2) onto which the shutter (1, 1') comes to rest, the said crenellated part being made up of teeth (3) separated by gaps (4), the inner walls (13) of the teeth (3) being portions of a cylinder of vertical axis, the width l of the gaps being less than the width b of the internal walls (13) of the teeth (3), characterised in that the end wall (11') of the shutter (1') facing the crenellated part (10) in the closed position of the shutter (1') has a convex shape forming, together with the internal wall (13) of each tooth (3), a passageway (5') which flares out from the top to the root of the tooth (3), the contact C of the shutter 1 with the seat (2) having to be at a distance d from the base B of the crenellated part (10) which distance is between 0.25 and 0.5 times the width l of the gap (4). <IMAGE></p> |
