Simulation analysis was carried out for the variable speed pump-control-motor hydraulic system. Mathematic models of inverter, asynchronous motor, fixedpump and load were set up.
The main mechanical seal is installed in the shaft on the dynamic in Central and fixedpump shell on the static ring for the relative motion between the end to achieve the objective of sealing.
机械密封主要的是靠装在轴上的动环与固定在泵壳上的静环之间端面作相对运动而达到密封的目的。
3
Adopting piston pump with fixed stroke, the piston directly propels the diaphragm, thus deleting the complex mechanic stroke adjustment equipment.