Pistonless accumulator

Details Pistonless accumulator Pistonless accumulator

1989-08-30

1991-06-04

Cohan, Alan

Paper making and fiber liberation

Apparatus

138 30, 137207, F16L 5504

Patent

active

050211250

ABSTRACT:
A hydraulic accumulator prevents oil with gas entrained in it from exiting the accumulator. The accumulator comprises a completely static structure which provides laminar flow of oil from a gas pad to the accumulator outlet. The laminar flow is preferably provided by a plurality of tubes disposed between the gas pad and the outlet, each tube having a substantially greater length than the largest cross-sectional dimension. The tubes are preferably rigid and circular in cross-section, and the passageways defined between the tubes also have a substantially greater length than the largest cross-sectional dimension. The accumulator can either be a low pressure accumulator or a high pressure accumulator. With a high pressure accumulator it is desirable to provide a float switch or like sensor to ensure that the tubes within a tube bundle are always fully immersed in oil. The accumulator is particularly useful in association with an atmospheric or pressure diffuser for treating paper pulp, which includes one or more screens which are hydraulically reciprocated.

REFERENCES:
patent: 3329155 (1967-07-01), Partos
patent: 3447557 (1969-06-01), Phelps
patent: 3461914 (1969-08-01), Sugimura et al.
patent: 3889705 (1975-06-01), Coderre
patent: 3892329 (1975-07-01), Panacek
patent: 4199960 (1980-04-01), Adams et al.
patent: 4279269 (1981-07-01), Schink
patent: 4312382 (1982-01-01), Gebauer
patent: 4354362 (1982-10-01), Schumacher et al.
patent: 4581903 (1986-04-01), Kerry
patent: 4627247 (1986-12-01), Morse

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