What is a hydraulic battery? How Does a Hydraulic Battery Work? What are the Types of Hydraulic Battery?
What is a hydraulic battery? How Does a Hydraulic Battery Work? What are the Types of Hydraulic Battery?
What is a hydraulic battery?
Hydraulic accumulators prevent impacts and shocks that occur in hydraulic systems and compensate for leaks in the system. It provides backup power to stop the system in the desired position in case of pump failure or power failure.
What are the Types of Hydraulic Battery?
Balloon Battery
Diaphragm Battery
Piston Battery
How Does Bubble Battery Work?
It is the most used battery type. Sealing feature is very good. Fast work is also an important reason for preference. Nitrogen Gas and hydraulic fluid are separated by a flexible balloon. Gas is filled into the balloon. When a pressure drop occurs in the hydraulic system, the compressed gas expands to provide the necessary pressure and flow reinforcement.
How Does a Diaphragm Battery Work?
The operating system of the diaphragm accumulator is similar to the bubble accumulator. The balloon expands when filled with gas, and the diaphragm accumulator expands. Diaphragm accumulators are not used where high pressure and flow rate are required. It is suitable for systems operating with small volume and low pressure.
How Does a Piston Battery Work?
The working system of the reciprocating accumulator is similar to the balloon accumulator. The balloon expands when it is filled with gas, while the diaphragm accumulator works on the hydraulic cylinder operating principle. Piston accumulators can be used where high pressure and flow rate are required.
What Do Hydraulic Batteries Do in a Hydraulic System?
Hydraulic accumulators store energy, usually by compressing nitrogen gas. This high-pressure gas works by forcing the hydraulic fluid inside the accumulator when the pressure in the system drops. Thanks to the stored potential energy of the gas and its cushioning properties, the accumulators make the dynamic behavior of hydraulic systems more stable.
- Vibration Absorption: Many hydraulic pumps generate energy through a vibrating flow. Piston pumps, in particular, can create vibrations when operating under high pressure. These vibrations can damage high-pressure systems. However, a correctly positioned accumulator in the system greatly reduces these vibrations, helping the system to work efficiently.
- Shock Cushioning: If cylinders or actuators in hydraulic systems stop suddenly, this can lead to pressure waves that quickly return. These shock waves can create peak pressures that are much higher than normal operating pressures. Accumulators absorb these shocks, ensuring safe and efficient operation of the system.
- Completing Pump Flow: An accumulator stores pressurized fluid in the hydraulic pump's operating cycle, helping the pump to meet the load. During idle periods of the pump, the liquid is directed to the accumulator and this energy is stored to be used when peak power is needed. This allows the system to operate with a smaller pump, which means both cost and power savings.
- Pressure Maintenance: Exposure of hydraulic fluids to temperature changes can lead to fluctuations in pressure in the system. In addition, the pressure may decrease in cases such as leakage of liquid. Accumulators compensate for these changes and maintain the necessary pressure in the system. If the main power supply fails, the accumulators are activated as auxiliary power supplies.
- Standby Power: Accumulators can store compressed gas for long periods of time and release this energy as needed. This feature makes accumulators useful as a standby power source. For example, the accumulator to start the hydraulic starter of an engine can act as a kind of "hydraulic battery".