Time : 2024-03-04 Browse : 21
YOTc variable speed fluid couplings belong to outlet-regulated variable speed hydraulic couplings, featuring unique structures, working principles, numerous advantages, and a wide range of applications.
Structure of Speed-Regulating Couplings
The structure of this speed-regulating coupling mainly consists of five parts:
Rotating parts of the adjustable speed coupling: including driving and driven components;
Oil inlet and outlet systems of the variable speed coupling;
Oil tank of the variable fluid coupling;
Cooling system of the variable speed hydraulic coupling;
Instrument and control systems of the speed-regulating coupling.
Working Principle of Variable Speed Couplings
The working chamber of YOTc series variable speed fluid couplings is filled with a certain amount of working fluid (usually No. 32 turbine oil). The driving component of the rotating part in the variable speed hydraulic coupling is connected to the motor. After the pump impeller of the adjustable speed coupling obtains mechanical energy from the motor,By using the blades on it, the working fluid undergoes relative and associative motion, converting mechanical energy into liquid energy, which then drives the turbine of the speed-regulating coupling to rotate. The turbine of the variable speed coupling is connected to the working machine through the output shaft, converting liquid energy back into mechanical energy to drive the working machine, thus realizing energy transmission from the prime mover to the working machine via the variable fluid coupling.
Outstanding Advantages of Speed-regulating Couplings
Variable speed hydraulic couplings can improve the starting capacity of squirrel-cage motors, utilizing the motor's peak torque as the starting torque to avoid the unreasonable "big horse pulling a small cart" matching phenomenon.
Adjustable speed couplings have the function of preventing power overload, protecting motors and working machines from damage due to overload.
Variable fluid couplings can reduce vibration and impact during startup.
In multi-machine drive systems, variable speed couplings can balance power and achieve sequential startup, reducing impact current on the power grid.
Speed-regulating couplings allow setting the startup time of the working machine according to operational requirements.
Variable speed hydraulic couplings can perform stepless speed regulation on the working machine, with significant energy-saving effects, achieving an energy-saving rate of 20% to 40%.
Adjustable speed couplings enable remote control and automated control of the working machine, with convenient operation.
Variable fluid couplings have a simple and reliable structure. Compared with frequency conversion speed regulation and CST speed regulators, they are more affordable, with lower operating costs, no mechanical wear, and can work in harsh environments. Speed-regulating couplings require no special maintenance and have a long service life.
Application Range of Variable Speed Couplings
The application range of variable speed fluid couplings is wide, suitable for both equipment requiring speed regulation for energy saving and those needing speed regulation due to process requirements. Specifically, they include:
Pumps for adjustable speed couplings: boiler feed pumps, ash pumps, transfer pumps, condensate pumps, water supply pumps, etc.;
Fans for variable speed hydraulic couplings: blowers, induced draft fans, Roots blowers, etc.;
Others for speed-regulating couplings: crushers, centrifuges, sewage treatment odor devices, belt conveyors, grab machines for sand dredgers, sinter mixers, etc.
