Accumulators are mainly used to store pressure fluid and these are used as a hydraulic damper. Although various types of accumulators are developed today, proper selection should be made for the system.
When gas charge accumulators used as an auxiliary fluid power source such as the bladder type and the piston type, demanded volume and pressure of the pre-charge gas should be examined under the adiabatic change (compression and expansion).
Piston Type Accumulators
Piston type accumulators may be the most reliable one, since these do not have elements which gives such damages as making the accumulator unusable in the instant, while the response speed to the given pressure change may be a little inferior to that of bladder type accumulators.