Accumulator with piston-poppet seal assembly

Details Accumulator with piston-poppet seal assembly Accumulator with piston-poppet seal assembly

F - Mech Eng,Light,Heat,Weapons

16

L

138/96

F16L 55/04 (2006.01) F15B 1/24 (2006.01) F16L 55/05 (2006.01)

Patent

CA 1198033

ABSTRACT A piston accumulator having a piston-poppet assembly to equalize substantially the liquid-gas pressure appearing across a piston seal. The assembly projects into the hydraulic chamber from its housed position within a socket recess formed in the piston. In response to an excess pressure differential between the gas chamber and liquid chamber of the accumulator, the assembly prematurely seals off the hydraulic passage which communicates with the hydraulic chamber of the accumulator. This premature sealing operation traps and pressurizes a small portion of hydraulic liquid within the reduced hydraulic chamber so that the pressure differential which would otherwise appear across the piston seal is reduced or eliminated.

450938

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