Bladder Accumulators – High Pressure
Fluids are practically incompressible and cannot, therefore, store pressure energy.
The compressibility of a gas (nitrogen) is utilised in hydraulic accumulators for storing fluids. HYDAC bladder accumulators are based on this principle.
A bladder accumulator consists of a fluid section and a gas section with the bladder acting as the gas-proof screen. The fluid around the bladder is connected to the hydraulic circuit so that the bladder accumulator draws in the fluid when the pressure increases and the gas are compressed. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.
HYDAC bladder accumulators can be used in a wide variety of applications and are also available in different pressure ranges, see catalogue sections:
- Bladder Accumulators Standard No. 3.201
- Bladder Accumulators Low-Pressure No. 3.202
- Accumulators No. 3.000
- V = 0.5 … 200 l
- p = 330 … 1,000 bar