ACCUMULATOR
Accumulator is a pressure vessel for storing hydraulic pressure in it utilizing compressible and decompressible nature of nitrogen gas. So, it can be said that the accumulator has a similar function to the rechargeable electrical battery.
In electricity, electrical energy is stored to the battery. On the other hand, in the hydraulic field, fluid energy (pressure of the fluid) is stored in an accumulator and is discharged when required.
PRINCIPLE OF THE BLADDER TYPE ACCUMULATOR ACTUATION
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- Utilizing the compressibility of gas and non-compressibility of fluid (mainly oil), fluid energy is stored in or discharged out of the accumulator.
- Working as a separater, the bladder separates the gas from the fluid.
- The gas (Nitrogen, by all means) shall be charged in the accumulator (bladder).
- When the fluid flows in to the accumulator, the precharged nitrogen gas is compressed. And, as much as the nitrogen gas is compressed, the fluid is stored in the accumulator.
- Thus the fluid is stored in the accumulator as "fluid with energy", and the stored fluid is discharged out of the accumulator to let it do powerful job when necessary.
TRANSPARENT DEMONSTRATION RIG MADE OF ACRYLIC (VIDEO)
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Transparent accumulator shell allows the movement of the accumulator inside to be seen.
NACOL Pleats Type Bladders change their shape regularly compressing and decompressing, in line with the pressure change. It's a long bladder life design eliminating bladder fatigue that comes from extreme sharp bending
Please take a look at the compressed shape of the Pleats Type Bladder in the Transparent Acrylic Demonstration Rig. (Video)
