Fluids are practically incompressible and cannot therefore store pressure energy. The compressibility of a gas (nitrogen) is utilized in hydro-pnuematic accumulators for storing fluids. HYDAC bladder accumulators are designed on this principle, using nitrogen as the compressible medium.
The bladder accumulator consists of a fluid section and a gas section, with the bladder acting as a gas-proof screen. The fluid around the bladder is connected with the hydraulic circuit, so that the bladder accumulator draws in fluid when the pressure increases thus compressing the gas. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.
Not all fluids are compatible with every elastomer at all temperatures. HYDAC offers the foilowing choice of elastomers:
- NBR (standard nitrile)
- LT-NBR (low temperature nitrile)
- ECO (epichlorohydrin)
- IIR (butyl)
- EPR (ehtylene propylene)
- FPM (fluorelastomer)
HYDAC bladder accumulators consist of a welded or forged pressure vessel (shell), a bladder and ports for gas and fluid inlet. The gas and fluid sides are separated by the bladder.
HYDAC offers internal and/or external protective coatings. If this is insufficient, stainless steel is also available.
From our partners
Sandvik Construction launches the newly developed CH540 cone crusher - the latest…
MORE FROM Aggregates Zone
SUBSCRIBE & FOLLOW
- Two teens dead after falling through ice at quarry745 Views
- CRH emerges as frontrunner for Holcim and Lafarge assets540 Views
- Caterpillar full-year earnings dip with bad 4Q; 2015 doesn't look good either280 Views
- MSHA files more discrimination complaints in 2014 than any other year256 Views
- A. Colarusso and Son acquires Holcim land in NY135 Views