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What Does The Hydraulic Coupler Do?
Liquid oil is used as the working medium to transfer the kinetic energy of the liquid to mechanical energy to connect the motor and the working machine. Which are characterized by their smooth no-load starting motor, stepless variable speed etc., used in the power plant feed pump speed setting,...Chat Now
Liquid oil is used as the working medium to transfer the kinetic energy of the liquid to mechanical energy to connect the motor and the working machine.
Which are characterized by their smooth no-load starting motor, stepless variable speed etc., used in the power plant feed pump speed setting, can simplify the boiler feed water regulating system, reduce the amount of high pressure valves, as by speed changes to water flow and pressure to adapt to the unit start-stop and load change, good adjusting performance, before and after the valve pressure drop is small, line loss is small, not easy to damage, reduce feed water system faults, jamming occurs when the feed water pump, killed, and so on and so forth, can have the pump and motor protection.
Therefore, in the modern power station, the boiler of the unit is widely used in the water pump with hydraulic coupling.
The main parts are: pump wheel, turbine, rotating shell, input shaft, output shaft and spoon tube.
Normally, the rotating shell is connected to the pump wheel by a flange on the outer flange.
Pump wheel and turbine wheel called work, both in the wheel blade, two rounds, respectively, with the input and output shaft connected, there is a gap between them, the pump wheel and turbine has the radial size of the same cavity shape, so, work together to form the oil chamber, the work of oil from the pump wheel inside, then make rotation movement together with engine, oil under the action of centrifugal force, be left to the outer edge of the pump impeller, the formation of high speed flow into the opposite of turbine blade, flow to the inside of the turbine flow gradually slow down and return to the inner side of the pump impeller, the circulation of an oil.
The absolute flow of working fluid in the working chamber is a three-dimensional motion.
The rotating shell is enclosed with the pump wheel and surrounds the turbine so that the working fluid can be stored in the pump wheel.
The input shaft is connected with the power machine (such as the motor), and the output shaft is connected to the driven machine (such as the pump).
The characteristics of hydraulic coupler are: can eliminate shock and vibration;
The output speed is lower than the input speed, and the speed difference between the two axes increases with the increase of load.
Overload protection performance and starting performance are good. The input shaft can be rotated when the load is too large and the input shaft can be rotated without causing damage to the engine.
When the load is reduced, the output shaft speed increases until it is close to the speed of the input shaft, making the transfer torque to zero.
The transmission efficiency of the hydraulic coupling is equal to the ratio of the output shaft speed to the input shaft speed.
The normal working condition of the hydraulic coupler can achieve higher efficiency than that of 0.95.
The characteristics of the hydraulic coupler vary with the shape of the working chamber and the pump wheel and the turbine.
It normally dissipates heat through the shell and does not require an external cooling supply.
The process of hydraulic coupling transmission can be regarded as the process of resultant force.
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