Spring-Loaded Accumulator Test Rig

This example shows a test rig for the Spring-Loaded Accumulator (IL) block. When the orifice is closed, the pressure source charges the accumulator. The check valve holds the accumulator at its charged pressure, and as the orifice opens the accumulator discharges.

Model

Simulation Results from Scopes

The plots below show two cycles of accumulator charging and discharging. When the orifice is closed, the supply pressure increases, which charges the accumulator. The check valve holds the pressure in the accumulator as the supply pressure drops. When the orifice opens, the accumulator discharges. Once the accumulator is empty, the Pressure Source block drives the flow, which results in a lower flow rate. When the orifice closes again, the cycle repeats.