The main hydraulic pump and its reservoir are located in a central position, but that’s not always enough when dozens of angling metal tubes and rubber hoses are stretching their way to a distant segment of a large mobile hydraulic machine. When accumulators store fluid power at those remote equipment segments, then energy is immediately available. That sole feature allows for smaller, more efficient pumps.
Pump flow supplementation is a major benefit, but then so is a capacity for leak compensation. A fluid leak forces a primary hydraulic pump into overdrive. Temperatures rise and the gear feels like it might shake itself apart. The ultra-short starts and stops cycle the pump until it’s creating a damaging series of shocks. Accumulators smooth this jagged cycling condition until the leak can be found and repaired. In essence, the stored energy softens the sharp peaks and troughs generated by the fatigued pump.
This next advantage is closely related to the supplementary flow feature. In this case, though, the device is providing an extra amount of drive “oomph” when the load is on the cusp of compromising the mobile lifter’s raw fluid muscles. Generally speaking, when high-volume, high flow conditions are suddenly applied, the accumulator is immediately on hand to supply torque and drive power.
A bladder accumulator is the most commonly used hydro-pneumatic accumulator. We supply bladder accumulators for high and low pressure applications.
Piston accumulators use pistons as separating elements and can handle much higher gas compression ratios and flow rates. We also supply piston seals and repair kits.
Diaphragm accumulators have a relatively small fluid storage capacity. We supply diaphragm accumulators with high compression ratios of up to 8:1.
Metal bellows accumulators provide a hermetic seal between charge gas and hydraulic fluid, making them well suited for blowout preventers and similar applications where a permanent, leak-tight seal is essential.
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