The working chamber of YOTc series speed-regulating hydraulic coupling is filled with a certain amount of working fluid (usually No. 32 turbine oil), and the driving part of the rotating part is connected with the motor, and the pump wheel obtains mechanical energy from the motor. The blades on it make the working fluid perform relative movement and implicated movement, convert it into liquid energy, drive the turbine to rotate, and connect with the working machine through the output shaft, convert the liquid energy into mechanical energy, drive the working machine to work, and realize the transformation from the prime mover. Energy transfer to the working machine。
YOTC speed regulating hydraulic coupler
Introduction of variable speed hydraulic coupling
- 1. The working principle
of the speed-regulating hydraulic coupling The YOTc speed-regulating hydraulic coupling developed and produced by our company is an outlet-adjusting speed-regulating hydraulic coupling. Its structure mainly consists of five parts:
①. Rotating parts: mainly include active parts (pump wheel, casing, input shaft), driven parts (turbine, output shaft);The working chamber of YOTc series speed-regulating hydraulic coupling is filled with a certain amount of working fluid (usually No. 32 turbine oil), and the driving part of the rotating part is connected with the motor, and the pump wheel obtains mechanical energy from the motor. The blades on it make the working fluid perform relative movement and implicated movement, convert it into liquid energy, drive the turbine to rotate, and connect with the working machine through the output shaft, convert the liquid energy into mechanical energy, drive the working machine to work, and realize the transformation from the prime mover. Energy transfer to and from work machines.
②. Oil intake and discharge system;
③. Oil tank;
④. Cooling system;
⑤. Instrument ,Control System.
The speed-regulating coupling can realize the stepless speed regulation of the working machine. By adjusting the opening of the conduit of the oil discharge system, the liquid filling amount of the working chamber can be changed. Stepless speed regulation is performed to change the output power. In the process of speed regulation, slip will occur (when the transmission ratio i=0.66, the relative efficiency loss is the largest, η=97%); the working fluid will heat up, so it must be equipped with a cooler. The oil system sends the working fluid back to the working chamber. The coupling can be controlled by electric actuators, servo amplifiers, automatic speed measuring devices, speed sensors, pressure sensors and other control instruments to implement automatic on-site manual and remote control of the operation of the speed-regulating coupling.
2. Advantages of speed regulating hydraulic coupling◆ To improve the starting ability of squirrel cage motors, the peak torque of the motor can be used as the starting torque to avoid the unreasonable matching phenomenon of "big horse-drawn trolley".
◆ Prevent power overload and protect the motor and working machine from being damaged due to overload.
◆ Reduce vibration and shock during starting.
◆ Power balance and sequential start can be carried out in multi-machine drive. Reduce the inrush current of the grid.
◆ The start-up time of the working machine can be completely adjusted according to the operation requirements.
◆ It can be used for stepless speed regulation of the working machine, which has a very significant power saving effect, and the power saving rate is 20~40%.
◆ It can realize remote control and automatic control of the working machine, and the operation is very convenient.
◆ Simple and reliable structure, lower price than variable frequency speed control and CST speed governor, less running cost, no mechanical wear, can work in harsh environment, no special maintenance, long service life.
3. Scope of application
In the equipment operating in the machinery industry, some are speed-regulated for power saving, and some are speed-regulated due to process requirements, so the use of speed-regulated couplings is very wide.
◆ Pumps: boiler feed water pump, ash pump, conveying pump, condensate water pump, water supply pump, etc.;
◆ Fan: blower, induced draft fan, Roots blower, etc.;
◆ Other: crusher, centrifuge, sewage treatment deodorizer , belt conveyors, dredging boat grabs, sintering mixers, etc.
4. Transmission power map of YOTc series speed regulating hydraulic coupling
5. The original characteristic curve λB-f(i) of YOTc series speed-regulating hydraulic coupling and the matching operation combined curve of working machines with different working characteristics
Notice to customers: related items of accessories and instruments that must be determined by customers when ordering.
1. The items marked with ● above must be provided and confirmed by the customer when ordering the contract.2. The rotation direction is determined by the rotation direction of the input end of the coupling viewed from the rear end of the motor.
3. If the user has no special requirements, the electric actuator is installed on the right side of the output end of the coupling (stand at the rear end of the motor and look at the coupling).
6. Auxiliary accessories supply items