Energy accumulator oil pressure range

What happens when a gas accumulator is pressurized?

When the system is pressurized, the nitrogen compresses as the bottom of the accumulator fills with oil. The nitrogen pressure matches the system pressure, so any reduction in system pressure will cause the accumulator to discharge oil to the system.

What is the maximum working pressure for an accumulator?

Maximum working pressure : 330 to 690 Bar depending on models. According with the fluids of group II (PED). Options for ATEX compliant blocks construction carbon steel or stainless steel. Parker Olaer bursting discs are available for most accumulators.

Does an accumulator need oil?

When an accumulator is used for shock absorption, it is not desirable that there be much, if any, oil in the accumulator during operation. The accumulator will respond more rapidly to pressure spikes if the compression process has already begun.

How many litres can a accumulator hold?

This extensive range enables us to ofer accumulators operating from – 50 to +150 °C with pressures of up to 690 Bar and capacities of up to 57 litres.

How are accumulators tested?

The accumulators are tested at PT pressure which is equal to the maxi- mum working pressure PS, multiplied by 1.43, which allows to verify the absence of defects, which could cause flaws and deformities in the cy- linder and in the piston or gas or oil leak from the seals, threaded sections or valve.

How does a gas accumulator work?

This enables a liquid under pressure to be accumulated, stored and recovered at any time. Its special design allows the bladder (the strategic component) to compress the gas and usually form into three lobes in order for the accumulator to store, then to deliver the fluid under pressure, as required.