Axial force balance method of centrifugal high temperature oil pump:
(1) The high temperature oil pump body is equipped with a balance tube, which is connected with the suction end of the centrifugal pump and the commercial pressure end near the outer side of the impeller disc, so that the pressure on both sides of the impeller is basically balanced, so as to eliminate the axial force. The advantages and disadvantages of this method are similar to those of the balanced hole method. Some centrifugal high temperature oil pump at the same time set the balance pipe and balance hole, can get a better balance effect.
② The impeller symmetrical arrangement of the two impellers back to back or face to face installed on a shaft, so that every two contrary impeller at work produced by the axial force offset each other.
The balance drum is installed in the back of the last stage impeller of the segmented multistage centrifugal pump, and a balance drum is installed with the shaft rotating together.
(4) the balance plate is installed, behind the last stage impeller of the segmented multistage centrifugal pump, equipped with a balance plate rotating with the shaft and a replaceable balance seat is embedded on the pump shell.
The characteristic of the device is to use the balance drum to balance 50%-80% of the axial force, and the remaining axial force is balanced by the balance plate, its structure.
