Full mechanical variable speed planetary gear

Function

• The torque converter fills immediately after starting the motor and branches off a small proportion of the input power.
• The driven machine is decelerated to a minimum speed.
• A fixed planetary gear transmits the power branched off to the revolving planetary gear (superimposing gear).
• The revolving planetary gear increases the power again.
• Speed control is applied using the adjustable guide vanes in the torque converter.
• The integrated oil system fills the torque converter with operating oil. At the same time, the Vorecon supplies the drive motor and the driven machine with lubricating oil.

Special benefits

• The Vorecon RWE is a cost-effective and straightforward solution for high-speed turbo compressors and boiler feed pumps with a reduced control range.

Function

• The hydrodynamic coupling is emptied when the drive motor starts and the clutch are opened; this indicates the drive motor and the driven machine are decoupled, and motor start-up is essentially load-free.
• The hydrodynamic coupling is filled after the drive motor is running and begins to transmit power. The driven machine is then gently decelerated to minimum speed.
• The clutch closes and bypasses the hydrodynamic coupling.
• From then on, the Vorecon RWC operates similarly to the Vorecon RWE. The speed control of the driven machine is applied using the adjustable guide vanes in the torque converter.

Special benefits

• The drive motor starts unloaded, and the driven machine can be started under weak power grid conditions.
• Driven machines with a high mass moment of inertia are easier to start up.

Function

• When starting up the drive motor, the hydrodynamic variable speed coupling is emptied, and the clutch is opened. This means the drive motor and the driven machine are decoupled, and motor start-up is essentially load-free.
• In the lower control range, the hydrodynamic variable speed coupling is filled and transmits power. The torque converter is emptied and thus is non-operational within this control range. The speed control of the driven machine is achieved via the adjustable scoop tube, which determines the filling level of the operating oil in the coupling and, therefore, the power transmitted.
• The retarder (hydrodynamic brake) is filled with oil and keeps the fixed planetary gear at a low speed.
• The clutch closes and bypasses the variable-speed coupling to achieve the upper-speed range.
• The retarder is emptied, and the torque converter is filled.
• From then on, the Vorecon RW operates similarly to the Vorecon RWE. The speed control of the driven machine is applied using the adjustable guide vanes in the torque converter.

Special benefits

• The Vorecon RW is the ideal control combination for driven machines with a comprehensive control range – mainly pumps and blowers
• In addition, the Vorecon RW offers the same advantages as the Vorecon RWC, such as a load-free motor start-up and easy start-up of driven machines with a high mass moment of inertia.

Function

• When starting the motor, the hydrodynamic couplings are filled, and the torque converter is emptied. The hydrodynamic couplings thus connect the stationary gear with the input shaft. This results in a very low speed on the output shaft, and the driven machine takes on a little power. This relieves the motor when starting up.
• After starting up the motor, the hydrodynamic couplings are emptied, and the torque converter is filled. The driven machine is decelerated to a minimum speed.
• From then on, the Vorecon RWC-M operates similarly to the Vorecon RWE-M. The speed control of the driven machine is applied using the adjustable guide vanes in the torque converter.

Special benefits

• The Vorecon RWE-M is a cost-effective and straightforward solution for high-speed turbo compressors and boiler feed pumps with a reduced control range.
• The modular design with horizontally split housing allows service work to be carried out quickly and effectively, which is an essential aspect of offshore systems.

Function

• When starting the motor, the hydrodynamic couplings are filled, and the torque converter is emptied. The hydrodynamic couplings thus connect the stationary gear with the input shaft. This results in a very low speed on the output shaft, and the driven machine takes on a little power. This relieves the motor when starting up.
• After starting up the motor, the hydrodynamic couplings are emptied, and the torque converter is filled. The driven machine is decelerated to a minimum speed.
• From then on, the Vorecon RWC-M operates similarly to the Vorecon RWE-M. The speed control of the driven machine is applied using the adjustable guide vanes in the torque converter.

Special benefits

• The drive motor starts unloaded. The driven machine can also be started under weak power grid conditions.
• Driven machines with a high mass moment of inertia are easier to start up.
• The modular design with horizontally split housing allows service work to be carried out quickly and effectively, an essential aspect of offshore systems.