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Fundamentals of Gas-Loaded Accumulator Operation

The basic principle of a Gas-Loaded Accumulator (GLA) is based on the different physical properties of gases and liquids under pressure to store and release energy. Below are some key points on the basics of gas-loaded accumulator operation:

Principle of operation:

Gas-loaded accumulators utilize the compressibility of a gas (usually nitrogen) to store energy. Inside the accumulator, the gas is sealed inside a gas chamber, while a liquid (usually hydraulic fluid) fills the space outside the chamber. As the system pressure rises, the fluid is compressed into the accumulator while the gas inside the chamber is compressed, storing energy. When the system needs energy, the gas inside the chamber expands, pushing the liquid back into the system and releasing the stored energy.

Features and Advantages:

Oil and gas isolation: Since the gas and liquid are separated inside the accumulator, this prevents the aging of the oil and extends the service life of the accumulator.

Responsive: Due to the rapid compression and expansion characteristics of gas, gas-carried accumulators are able to respond quickly to changes in system pressure and provide a stable pressure output.

Small size and light weight: Gas-loaded accumulators are typically smaller and lighter than other forms of accumulators, making them particularly useful in space-constrained application scenarios.

Versatility: In hydraulic systems, airborne accumulators not only store energy, but also stabilize pressure, reduce hydraulic pump power, compensate for system leakage, and absorb shock and pulsating pressures.

Operation & Maintenance:

To ensure proper operation and long service life of the airborne accumulator, regular maintenance is required. This includes checking the sealing of the accumulator, the pressure of the gas and the cleanliness of the fluid. At the same time, the precharge pressure of the gas needs to be adjusted according to the needs of the system to ensure that the accumulator is able to store and release energy efficiently.

Overall, the gas-carried accumulator is an efficient and reliable energy storage device that is widely used in various hydraulic systems. By understanding its working principle and characteristics, such equipment can be better utilized and maintained to ensure stable system operation and efficient energy utilization.



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