Accumulator

Details Accumulator Accumulator

1990-03-30

1991-03-05

Sewell, Paul T.

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

138 31, 188314, 60413, F16L 5504

Patent

active

049970097

ABSTRACT:
In the interior of the housing of an accumulator, a metallic bellows and a self-seal mechanism are arranged. The metallic bellows partitions the interior of the housing into a gas chamber and a liquid chamber. The self-seal mechanism includes an elastic seal member and a face which the elastic seal member opposes. When the bellows is compressed to the predetermined extent due to introduction of a compressed gas into the gas chamber, the elastic seal member is brought into contact with the face, thus closing a flow port. The elastic seal member has a slanted face, so that a wedge-shaped liquid guide gap is produced when the elastic seal member is in contact with the face. When, in this condition, the compressed liquid is introduced into the flow port, part of the liquid enters the liquid guide gap, thus permitting the seal member to easily separate from the face.

REFERENCES:
patent: 4614255 (1986-09-01), Morita et al.
patent: 4815706 (1989-03-01), Feuling
patent: 4828231 (1989-06-01), Fukumura et al.
patent: 4921224 (1990-05-01), Fukumura et al.

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