A device used in a hydraulic system to store energy or, in some applications, dampen pressure fluctuations. Energy is stored by compressing a pre charged gas bladder with hydraulic fluid from the operating or charging system. Depending on the fluid volume and pre charged pressure of the accumulator, a limited amount of hydraulic energy is then available independent of any other power source.
Oil and gas accumulators store incompressible fluid under high pressure via external source such as using spring, liquid or a gas or a piston. These accumulators are hydro-pneumatic devices and can be used in the blowout preventers, drilling rigs and mud pumps. Their main purpose is to handle the pressure fluctuations, noise reductions, pulsation damping and leakage compensation.
The material used for to manufacture accumulators depends on the applications in which these accumulators are to be used, i.e., based on different pressure ranges.
Well pressure-control systems typically incorporate sufficient accumulator capacity to enable the blowout preventer to be operated with all other power shut down.
Accumulator types
· No separator
· Gas-charged bladder
· Gas-charged piston
· Spring-loaded piston
· Weight loaded
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