Control valve vibration damper/isolator

Details Control valve vibration damper/isolator Control valve vibration damper/isolator

1990-02-01

1991-08-13

Rivell, John

Valves and valve actuation

With non-fluid retarder

277148, 277149, 277151, 277160, 277215, 277DIG9, F16K 3172

Patent

active

050390600

ABSTRACT:
A damper/isolator device having four ring segments (38) which are retained in slots (36) in an upper guide (31). The four segments (38) are forced radially outward against a valve bonnet liner (30) and are retained and centered within the slot (36) by serpentine or buggy type springs (44). The natural frequency of the damper and spring system is designed to be significantly higher than the frequency of the applied vibration induced by steam flow across a valve seat. This provides for the isolation of the valve plug (13) from the liner (30) and bonnet bore (11). The surface interaction between the ring segments (38) and the upper guide (31) provides for added friction damping to the system.

REFERENCES:
patent: 2719767 (1955-10-01), Ernest
patent: 3161400 (1964-12-01), Floyd
patent: 3913885 (1975-10-01), Greenwood et al.
patent: 4383546 (1983-05-01), Walters, Jr.
patent: 4384554 (1983-05-01), Gotada

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