The hydraulic accumulator, also known as energy accumulator, is an optional component in hydraulic systems such as hydraulic power unit and hydraulic pressure test equipment. But it still plays a very important role.
Hydraulic Pulsation Source
The air driven hydraulic pump is the core component in hydraulic power units and hydraulic pressure test machines. And its function is to pressurize liquid to generate and output high pressure hydraulic flow. As we known, the air operated hydraulic pump is a plunger reciprocating pump. So the liquid suction and discharge process is carried out alternately. And the plunger running speed is constantly changing during the displacement process, which will produce the instantaneous flow pulsation, so as to bring instantaneous flow pulsation in the entire hydraulic circuit. In most cases, the pressure pulsation will not affect users. If the user is sensitive to pulsation, or wants a more stable hydraulic flow, it is necessary to add an accumulator in hydraulic circuit.
Accumulators Operating Principle
The accumulator can temporarily store hydraulic energy and release it again when needed. Let me take the most commonly used bladder accumulator as an example, which is a mechanical shell with a bladder inside. The nitrogen pressure pre-charged in the bladder is the working pressure you need to maintain in your hydraulic system. If install the bladder accumulator on hydraulic piping, when the hydraulic system pressure fluctuates, the bladder in the accumulator will automatically rebound to compensate for the pressure loss in the pipeline to ensure the hydraulic system stability.
The Role of Hydraulic Accumulators
The main function of accumulators in hydraulic system is to supplement the pressure loss and suppress the pressure peak, so as to maintain the pressure stability in the entire hydraulic circuit. In short, to eliminate pressure pulsation in hydraulic system. In addition, accumulators have other functions, such as being used as an auxiliary power source or emergency power source, and also absorbs hydraulic shock to reduce noise.
As an experienced provider of high-pressure equipment and solutions, we will advise customers whether it is necessary to install accumulators in hydraulic equipment based on their actual needs.
