Vane pumps are commonly used in the oil and gas industry for pumping petrol. They represent a well proven pumping technology that has undergone considerable development over the last 20-30 years. Yet they still suffer from a number of issues that are inherent to their core technology, being rotational.
Significant and random pressure pulse signatures at the discharge,
having a negative impact on downstream equipment such as valves, meters
and plumbing.
Cavitation of fluids with low viscosity such as petrol under normal
suction conditions, leading to excess noise, wear and poor flow
delivery.
Excessive wear at vane tips when foreign material gets into the pump causing reduced life and reduced performance.
Solution
SwashPump core technology is based on an oscillating plate inside the pumping chamber using a sinusoidal motion, i.e. Non rotational.
This results in,
Smooth flow of liquid at the discharge port giving low repeatable pressure pulse signatures
Constant flow rates under a range of suction conditions, reduced Cavitation and Noise
5x lower tip speeds and hence reduced wear on contacting parts
SPT has designed and manufactured prototype pumps that deliver 90 L/min at 25psi when lifting petrol 3.5 m.
