Working principle of nitrogen accumulator check valve

What is the pressure of nitrogen in a hydraulic accumulator?

When the fluid is pumped into an accumulator the nitrogen (N2) inside the accumulator is compressed. When all the hydraulic fluid is in an accumulator designed for high pressure side of an HHV, the pressure of the nitrogen reaches 5000 pounds per square inch (psi). If empty of fluid, the pressure of the nitrogen is about 2000 psi.

How does a nitrogen accumulator function?

A nitrogen accumulator works by compressing nitrogen gas when system pressure increases, causing fluid to flow into it. It then releases the compressed nitrogen when system pressure decreases, sending the fluid out of the accumulator.

How do you control nitrogen flow in an accumulator?

The nitrogen flow rate in an accumulator can be controlled through various means, such as adjustable orifice plates, flow control valves, or proportional pressure control valves. These devices allow for precise control of the nitrogen flow and pressure, ensuring optimal performance of the hydraulic system.

What is the pressure of nitrogen in a HHV accumulator?

When all the hydraulic fluid is in an accumulator designed for high pressure side of an HHV, the pressure of the nitrogen reaches 5000 pounds per square inch (psi). If empty of fluid, the pressure of the nitrogen is about 2000 psi. The pressure of the nitrogen in the low pressure reservoir will vary from 60 psi when empty to 200 psi when full.

Why do hydraulic accumulators use nitrogen?

By using nitrogen, the accumulator can provide a consistent and reliable source of hydraulic pressure, ensuring smooth operation of the system. Furthermore, nitrogen helps prevent excessive pressure fluctuations and reduces the risk of hydraulic system failure.

Why is nitrogen used in the charging process of an accumulator?

In summary, nitrogen gas is used in the charging process of an accumulator to provide the necessary pressure for its operation. It offers several benefits, including safety, stability, and efficient energy storage. Understanding the role of nitrogen in the accumulator is crucial for the proper functioning and maintenance of hydraulic systems.