What is the impact of crude oil viscosity on the operation of screw pumps?
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Could everyone please help analyze the impact that having a higher oil viscosity specified during the design of a screw pump, but a lower oil viscosity during actual operation, will have on the twin-screw pump? Will it cause a broken shaft?
If the viscosity is too high, it will exert pressure on the screw, resulting in excessive clearance; however, low viscosity has little impact on screw pumps.
Efficiency will be affected to some extent; during design, the rotation speed and motor power were determined based on media with high viscosity. Now that the viscosity has decreased, the efficiency has dropped, but other aspects remain unaffected
The actual viscosity under operation of one of our screw pumps is around 20, while it was designed for a viscosity of 380 mm2/s; the pump shaft broke, and the manufacturer said it was due to the low viscosity
If there are any authoritative institutions that analyze such issues, you can contact me.
The actual viscosity under operation of one of our screw pumps is around 20, while it was designed for a viscosity of 380 mm2/s; the pump shaft broke, and the manufacturer said it was due to the low viscosity
The actual viscosity under operation of one of our screw pumps is around 20, while it was designed for a viscosity of 380 mm2/s; the pump shaft broke, and the manufacturer said it was due to the low viscosity
The actual viscosity under operation of one of our screw pumps is around 20, while it was designed for a viscosity of 380 mm2/s; the pump shaft broke, and the manufacturer said it was due to the low viscosity
. Using a butcher’s knife to kill a chicken – the knife breaks because the chicken is too small
Is the low viscosity the reason for the shaft breakage? I’ve heard this claim before: when viscosity decreases, leakage increases, and flow rate or pressure may change. The reasons for shaft failure are essentially either increased load or quality issues