The Water Hydraulics Company Ltd.
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Model P60–M30 -Axial Piston High Pressure Desalination Pump
The power centre combines the operation of an axial piston high pressure desalination pump with an axial piston motor utilising the pressure in the waste brine to assist the electric motor in driving the pump hence reducing the power requirement to typically less than 3 kW/m³ throughout. The power centre has been purpose designed and built for the RO market.
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Simple Design
The power centre is driven via a splined shaft from an electric motor. This turns the pump rotating group which also drives the energy recovery rotating group via a simple splined mechanical coupling. There is no need for a second separate booster pump as in many other energy recovery devices nor an additional electric drive motor.
Compact Design
Due to the integrated nature of the power centre design, the footprint is much reduced. There is also no need for additional fluid couplings
which makes for a very compact system; ideal for ships and offshore platforms.
Low Maintenance Costs
The simple compact design of the power centre has ensured parts requiring maintenance are easily accessible therefore, reducing maintenance costs. Both the pump and energy recovery motor utilise the same well proven axial piston technology leading to long service intervals without the need for expensive oil changes. No special tools are required, but for extra assurance service exchange units are available.
High Reliability with Low Risk
Our in-house designed axial piston pumps and motors are 100% tested at 160 bar pressure settings. The power centre utilises salt water to lubricate bearing surfaces so there is absolutely no risk of oil contamination to the environment or the working area.
Reduced Operating Costs
The integrated energy recovery device enables high energy efficiency, meaning lower running costs and potential energy savings of up to 70% (compared with systems without energy recovery). This also leads to the use of smaller electric motors and control systems thereby reducing the capital cost.
Even with the adoption of such high grade corrosion material, we would advise that a weekly (if not sooner) fresh water flushing regime is undertaken especially if the system will be non-operational for any period.
