What is the pressure in the balance pipe of a multi-stage pump?
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Friends, have you paid attention to the pressure in the balance pipe of multi-stage pumps? Is it higher than the inlet pressure, or equal to it? What does the change in pressure indicate?
You can connect a pressure gauge to the balance pipe, and its pressure should be higher than the pump inlet pressure. If the pressure here is too high, it is very likely that the pump balance disc has worn out.
Friend on the 2nd floor, the pumps produced nowadays come equipped with pressure gauges on their balance pipes; you haven’t answered all my questions.
Under normal circumstances, the pressure in the balance tube should be slightly higher than the pump inlet pressure. If the pressure on that gauge increases, it is usually because the balancing mechanism has worn out too much and should be replaced. There should be no decrease in pressure.
The pressure in the balance tube should be slightly higher than the inlet pressure; if it increases significantly, it will affect the pumping volume of the pump. If there is a problem with the balance mechanism, it needs to be repaired.
It should be slightly higher than the inlet pressure; if it is too high, it indicates that there has been a change in the clearance of the balance drum or that the balance tube is blocked.
The pressure gauge on the balance tube indicates the pressure from the inlet to the balance chamber; these two pressures should be essentially equal! This increase in pressure indicates excessive wear of the clearance in the balance drum (disk) ； This decrease in pressure indicates a blockage inside the balance tube.