Accumulator working principle
Hydraulic oil is an incompressible liquid. Therefore, it is impossible to accumulate pressure energy by using hydraulic oil. It is necessary to rely on other media to convert and accumulate pressure energy. For example, a bladder-type inflatable accumulator developed using the compressible properties of gas (nitrogen) is a device for accumulating hydraulic oil. The bladder accumulator consists of an oil portion and a gas portion with a gas seal, and the oil around the bladder is connected to the oil circuit. When the pressure rises, the oil enters the accumulator, and the gas is compressed until the system line pressure no longer rises; when the line pressure drops, the compressed air expands, and the oil is hydraulically introduced into the circuit, thereby slowing down the line pressure.