The accumulator bladder is an energy storage device in the hydraulic and pneumatic system. It converts the energy in the system into compression energy or potential energy at the appropriate time and stores it. When the system needs it, it converts the compression energy or potential energy into hydraulic or pneumatic energy and releases it to resupply the system. When the pressure of the system increases instantaneously, it can absorb this part of the energy to ensure that the pressure of the entire system is normal.