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China Constant Fill Soft Start Fluid Coupling
What are the characteristics of a hydraulic coupler when it is filled? The working fluid and ordinary type yox are required in the operation before the filling quantity, often called this country outside the charging type hydraulic coupling. In accordance with the needs of operating power, the...
What are the characteristics of a hydraulic coupler when it is filled?
The working fluid and ordinary type yox are required in the operation before the filling quantity, often called this country outside the charging type hydraulic coupling. In accordance with the needs of operating power, the liquid filling rate can be selected within the range of 40% ~ 90% of the full filling liquid. This is because the transmission capacity is too small and uneconomical when the wide liquid ratio is less than 40%. When the filling rate is greater than 90%, the hydrodynamic coupling is affected by the lack of enough space for the liquid flow in the working chamber. If the cavity is full of liquid, the liquid heat expansion account will cause seal failure or structural damage. In the case of partial filling, two basic flow forms, namely, small circulation flow and large circulation flow, occur in different conditions.
Small circulating in the speed difference is small, the liquid in the cavity of the circulation flow velocity is relatively low in the turbine for centripetal motion of the liquid in the role of rotating centrifugal force, has not yet reached the inner circle part of the working chamber into the pump, liquid can and went into the turbine release liquid can be obtained by the pump wheel this repeated cycle. There is a small closed interface between the centripetal in the circulating liquid and the flow of the centrifugal flow.
With the increase of turbine speed difference of rotating centrifugal force and centripetal flow decreases, the liquid flow in the turbine gradually strengthened, when the speed difference reaches a certain value, the small circulation suddenly transformed into a large circulation of large circulating fluid flow along the outer circle of the working chamber, the air filled cavity is formed in the center. When the small circulation flow is transformed into a large circulation flow, the inlet radius of the average flow line in the pump pulley decreases, and the transfer moment increases.
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