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How Diaphragm Accumulators Work

A diaphragm accumulator is a type of hydraulic accumulator used in hydraulic systems. Hydraulic accumulators are devices that store hydraulic energy by using a non-compressible fluid (usually hydraulic oil) under pressure. They consist of a fluid chamber and a gas chamber separated by a flexible barrier, which is the diaphragm in the case of a diaphragm accumulator.

Here’s how a diaphragm accumulator typically works:

  1. Fluid Chamber: This is the chamber where hydraulic fluid is stored. When hydraulic fluid is pumped into the accumulator, it compresses the gas in the gas chamber and causes the diaphragm to flex inward.
  2. Gas Chamber: This is the chamber filled with a gas, usually nitrogen. As hydraulic fluid enters the fluid chamber, the gas in the gas chamber gets compressed, exerting a force on the diaphragm.
  3. Diaphragm: The diaphragm is a flexible barrier that separates the fluid and gas chambers. It allows the gas to compress and expand without mixing with the hydraulic fluid.
  4. Storage of Energy: When the hydraulic system is pressurized, the diaphragm accumulator stores hydraulic energy by compressing the gas. This stored energy can be used to supplement the hydraulic system during peak demand periods or provide emergency power in case of system failure.

Diaphragm accumulators have several advantages, including their ability to handle high pressures, resistance to contamination, and relatively low maintenance requirements. They are commonly used in various hydraulic applications, including industrial machinery, mobile equipment, and aerospace systems.

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