Patent ID: 6810915
Filing Date: 2004-11-02
Classification: F15B,F16L,Y10T

Abstract:
An accumulator, comprising:a pressure vessel having a liquid introduction port at an end thereof; a bellows having a first end attached to an inner surface of said pressure vessel so as to separate the interior of said pressure vessel into a liquid chamber communicating with said liquid introduction port and a gas chamber filled with pressurized gas; a stay member attached to said inner surface of said pressure vessel inside said liquid chamber defining therein a small chamber communicating with said liquid introduction port, said stay member being provided with a communication port for communicating the interior of said small chamber with the remaining part of said liquid chamber and adapted to be closed by a part of said bellows to define a fully contracted state of said bellows; and a safety valve provided in said stay member for selectively communicating said liquid chamber with said inner small chamber of said stay member, wherein the safety valve opens automatically if the pressure and/or temperature exceeds a prescribed level.