Listing ID #3501069
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Contact SupplierA hydro-pneumatic accumulator is a device used
specifically for storage of liquid under pressure. As liquids,
for all practical purposes, are incompressible, this objective
is achieved by utilizing the compressibility of gases.
A flexible rubber separator i.e., diaphragm is fitted into the
accumulator shell.
An inert gas - nitrogen - is filled into the diaphragm through
a pressure valve to a pressure P . The diaphragm expands, 0
filling the entire volume V of the accumulator shell. 0
When the system (circuit) pressure P is higher than the gas 1
precharge pressure P , the liquid enters the shell and the 0
diaphragm is compressed reducing the gas volume to V .1
Should the liquid pressure rise to P , the volume of gas 2
reduces to V with an attendant rise in pressure, thus 2
balancing the Liquid pressure.