Paineakku

Paineakku, also known as a pressure accumulator or hydraulic accumulator, is a component in hydraulic systems that stores hydraulic energy. It acts as a reservoir, absorbing excess fluid when system pressure is high and releasing it when pressure drops, thus smoothing out pulsations and providing a consistent flow.

There are several types of pressure accumulators. The most common is the bladder accumulator, which uses a rubber bladder filled with gas (typically nitrogen) to store energy. Piston accumulators utilize a piston separating a gas-filled chamber from the hydraulic fluid. Hydrostatic accumulators, less common, rely on gravity to store energy.

The primary functions of a pressure accumulator include shock absorption, energy storage, leakage compensation, and emergency power supply. By absorbing sudden pressure surges, they protect system components from damage. They can store energy generated during off-peak times or braking, releasing it when needed to supplement pump output or handle peak loads. In systems with small leaks, accumulators can compensate for lost fluid, maintaining system pressure. In case of pump failure, the stored energy can be used to safely lower loads or operate critical functions.

Pressure accumulators are widely used in various industries, including manufacturing, automotive, aerospace, and marine applications. They are essential for improving the efficiency, reliability, and safety of hydraulic systems.