Hydraulic accumulators are vital components for an hydraulic system. They are used to store energy and to keep pressure in the system. Hydraulic accumulators come in variations with specific attributes and advantages, so let’s dive into some hydraulic accumulator types and look at the pros and cons of each. With a knowledge of the different types you can easily select the appropriate hydraulic accumulator for your application and thus improve your hydraulic system performance.
Hydraulic accumulators are essentially storage reservoirs for use in hydraulic systems. They house pressurized fluid that can be applied when necessary. HONGDA hydraulic accumulators are generally classified into one of three types: bladder, piston or diaphragm.
Bladder accumulators contain a flexible bladder inside them that divides the fluid and gas in the accumulator. As fluid is pumped into the accumulator, it compresses the gas in the bladder and energy is stored. The life span and flow rate, an adjustable stage time, the period of stop and the interval time of operation of these accumulator for hydraulic system is quite long.
Piston accumulators contain a piston which travels up and down within the accumulator. As fluid enters the accumulator it drives the piston up stowing the gas in the top of the accumulator. These accumulator type work well in high-flow situations and accommodate large volume changes.
Diaphragm accumulators include a flexible diaphragm that provides a separation between the fluid and gas in the accumulator. As fluid flows into the accumulator, it compresses the gas behind the diaphragm, which is stored as energy. These accumulators are small and highly mobile.
Each of the hydraulic accumulators has its own set of favorable and unfavorable characteristics. Bladder accumulators work well in high pressure settings, but are susceptible to contaminants. Piston accumulators work well for high-flow applications but can be heavy and costly. Diaphragm accumulators are light weight and small, at the expense of lifetime.
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