The prominent characteristics of a Hydraulic Coupling

A hydraulic coupling is a type of hydraulic energy transmission device.

Energy is conducted through the inertial force of the working fluid, and the impeller absorbs the mechanical energy in the driving machine, thereby increasing the energy of the working fluid in the circuit. The turbine obtains energy from the working fluid and outputs mechanical energy.

There is no direct mechanical connection between the impeller and turbine of the hydraulic coupling. Due to the necessary slip rule in energy transfer, a small amount of energy loss occurs, which will be converted into heat..

Prominent Features:

1. Low energy loss: Under normal and stable operation with minimal slip, the transmission efficiency is high, and energy loss is mainly concentrated in bearing sealing and wind resistance. The core hydraulic transmission loss is minimal.

2. Smooth and impact free startup under loaded or unloaded conditions: The motor can start under no-load or minimal load conditions, and the hydraulic coupling enables smooth, shock-free acceleration of the load.

3. Rapid current decay and low starting current, causing only minor current pulses: By achieving a "soft start," the demand for high torque at direct start is avoided, significantly reducing the starting current.

4. Load compensation for multi motor drive devices: When two or more motors jointly drive a load (such as a long belt conveyor or a large scraper), even if there are slight differences in motor characteristics, the internal oil filling or slip can be automatically adjusted to make the load borne by each motor more uniform and prevent one motor from overloading.

5. Effective vibration isolation system: It can effectively attenuate torsional vibrations transmitted from the motor or the load side, preventing their mutual transmission.

6. Protection against shocks, vibrations, and load changes: When the load side suddenly stalls or experiences a significant impact, slip (speed difference) can occur between the driving and driven components of the hydraulic coupling. The impact energy is absorbed and cushioned by the flow and friction of the oil, preventing it from being directly transmitted to the motor and upstream transmission system.

7. Overheating protection is achieved by installing fusible plugs, mechanical or electronic switch devices: fusible plugs are the most commonly used mechanical protection for hydraulic couplings. When the internal oil temperature rises to the set value (such as 125 ℃, 140 ℃) due to long-term overload, the alloy of the fusible plug melts, spraying out the working oil and cutting off the power transmission, thereby protecting the equipment.Hydraulic couplings can also be equipped with mechanical or electronic switch devices, which can send signals or directly cut off the motor power supply when the temperature is abnormal, achieving more precise control and protection.

For more information and consultation, please contact Kudosworld.