Pulsation dampener

Details Pulsation dampener Pulsation dampener

1979-11-26

1981-11-10

Bryant, III, James E.

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

138 26, 181206, 73430, 73707, F16L 5504

Patent

active

042992532

ABSTRACT:
A pulsation dampener providing high attenuation in a narrow quiet band or frequency. The pulsation dampener is tuned to provide a reflected wave 180.degree. out of phase in the narrow band to cancel the undesired pulsation. A silicone polymer contained by a diaphragm is used as the dampening fluid. The pulsation dampener operation is virtually unaffected by changes in working fluid pressure or density. The latter aspect makes the pulsation dampener particularly well suited for use in well drilling operations where pressure pulses in the drilling fluid are used to transmit information to the surface.

REFERENCES:
patent: 2407276 (1946-09-01), Hendel et al.
patent: 2727470 (1955-12-01), Ludwig
patent: 2936041 (1960-05-01), Sharp et al.
patent: 3061039 (1962-10-01), Peters
patent: 3581773 (1971-06-01), Warren
patent: 4195668 (1980-04-01), Lewis
patent: 4222414 (1980-09-01), Achener

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