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Directional Coupler Repair Has Many Unique Features Compared To Conventional Mechanical Transmissions
Jul 19, 2017

Directional Coupler repair has many unique features compared to conventional mechanical transmissions
    Hydraulic coupler is a flexible transmission device, compared with ordinary mechanical transmission device, has many unique features: to eliminate the impact and vibration; output speed is lower than the input speed, the difference between the two shaft speed increases with the load And when the load is reduced, the output shaft speed increases until close to the input shaft speed, so that the transmission torque Tends to zero. The transmission efficiency of the Directional Coupler is equal to the ratio of the output shaft speed to the input shaft speed.
    General Directional Coupler normal operating speed ratio of 0.95 or more can get a higher efficiency. The characteristics of the Directional Coupler are different due to the difference between the working chamber and the pump wheel and the turbine. It generally rely on the shell of natural cooling, no external cooling of the oil supply system. If the Directional Coupler oil is vented, the coupling is in the disengaged state, can play the role of clutch. But the hydraulic coupler is also a low efficiency, low efficiency range and other shortcomings. Speed-type hydraulic coupler mainly by the pump wheel, turbine, spoon tube room and other components. When the drive shaft drives the pump wheel to rotate, the working oil will obtain energy under the action of the blade and cavity in the pump wheel and be sent to the outer circumference of the pump wheel under the action of inertial centrifugal force to form high velocity oil flow The high velocity oil flow on the outer circumference of the outer circumference is combined with the peripheral velocity of the pump wheel outlet at the radial relative velocity, into the inlet radial flow path of the turbine and along the radial flow path of the turbine through the oil flow moment The turbine is rotated and the oil flow to the turbine outlet is combined with its radial relative velocity and the circumferential velocity at the turbine outlet to flow into the radial flow path of the pump wheel and regain energy in the pump wheel.
    This cycle of repetition, the formation of working oil in the pump wheel and turbine circulation circle. It can be seen that the pump wheel converts the input mechanical work into the kinetic energy of the oil, while the turbine converts the kinetic energy of the oil into the mechanical work of the output to achieve power transmission.
Directional Coupler is the use of a certain medium, the prime mover power to the slave from the mechanical device, has been widely used, the following Directional Coupler price is introduced on the fan application:
1, the motor winding temperature: the motor winding in the run due to the existence of a total resistance of the winding, the current will produce consumption and heat, the greater the heat the greater the heat, it must monitor the winding temperature, where the temperature reaches a certain limit, Alarm, until it is still elevated to a certain limit and sometimes forced to protect the motor, this process by the intelligent instrument throughout the monitoring.
2, the fan before and after the bearing temperature: fan operation, due to high-speed friction and heat, in order to safe operation, set the fan before and after the bearing temperature monitoring, where the temperature reaches a certain limit, the alarm must be issued until it is still increased to a limit Value is sometimes forced to stop, protect the machinery and equipment, this process is also monitored by the intelligent instrument.
3, the motor front and rear bearing temperature: the motor running, due to high-speed operation and heat, in order to safe operation, set the motor before and after the bearing temperature monitoring, where the temperature reaches a certain limit, the alarm must be issued until it is still increased to a limit Value is sometimes forced to stop, protect the machinery and equipment, this process is also monitored by the intelligent instrument.
Directional Coupler spare parts and drive mode selection should pay attention to the problem: brake wheel type limit type Directional Coupler with inner wheel drive brake wheel type, outer wheel drive brake wheel type, easy to remove the brake wheel type, Chamber wheel drive brake wheel, lengthened rear auxiliary chamber outer wheel drive brake wheel type, lengthened after the auxiliary room easy to disassemble the brake wheel type, lengthened after the auxiliary cavity with side abdominal cavity wheel drive brake wheel, With the side of the abdominal cavity wheel drive wheel, lengthened after the auxiliary cavity with side auxiliary cavity easy to disassemble the brake wheel and other kinds, the selection should be selected according to the need for form, and in accordance with the installation requirements to select the wheel drive or wheel drive. The distance between the end of the coupling output shaft and the end of the brake wheel is to ensure that the coupling and brake are properly installed in the positioning size, should be taken seriously.

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