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Titan Enterprises : Metering Grease Lubrication Flow in a Wind Turbine

hits:1744     Date:10/09/17
Used in hundreds of wind turbine installations, the Titan Enterprises OG2-700 flowmeter is a well-established monitoring device that provides valuable data helping to ensure safe and reliable operation.

Although China leads the world in the amount of power generated from wind, Denmark has the highest generation rate per capita by a long way.  In 2015, this small country was generating over 2 megawatt hours per person well ahead of China鈥檚 0.26.  This relatively high generation rate has resulted in a local industry which produces large numbers of wind turbines for the rest of the world.  One of the fundamental requirements of ensuring reliable and efficient wind turbine operation is to keep the heavily loaded main bearings fully lubricated in all operating conditions.  

Titan Enterprises were approached to supply a small flowmeter to monitor the grease being supplied into a wind turbine main bearing mechanism.  For simplicity the grease mechanism is mechanically driven from the blade rotation and therefore the flow rate is potentially very low if the blades are barely rotating.  This grease flow is crucial and an alarm must be tripped and the rotation stopped should the grease flow be insufficient.  In addition, if the lubricant supply line became blocked the flowmeter should be able to withstand pressure that could potentially rise to several hundred Bar.   An extra requirement for the required flow measurement device was for a low power system as the backup system was battery powered.  

Drawing upon its proven OG2 flowmeter that fulfilled the low flow measurement specifications on lubricating viscous fluids, Titan Enterprises redesigned this meter to operate at 700 Bar in a small body and fitted a miniature reed switch detector to keep the power requirements to a minimum. 

Fully IP67 / NEMA 4 compliant, the OG2-700 flowmeter is optimised for measuring the flow of viscous fluids and liquids at pressures of up to 700 bar and temperatures up to 150掳C. With a standard flow range from 0.03 to 4.0 litres / minute on 30Cstk oil the OG2-700 can routinely achieve outstanding accuracy (0.5%) and repeatability (0.1%). Combining robust 316 stainless steel construction and proven technology ensures that OG2-700 flowmeter provides reliable, accurate operation over an extended product lifetime. At the heart of the OG2-700 flowmeter are a pair of toothed oval gears one of which contains chemically resistant magnets, the gears rotate freely on robust bearings. Rotation is detected through the chamber wall by a Hall effect detector or a reed switch giving approximately 1100 pulses per litre passed. The output is an NPN pulse or a voltage free contact closure either of which is readily interfaced with most electronic display or recording devices. This combination of materials and technology ensures a long-life product with reliable, accurate operation throughout.

For further information on the OG2-700 flowmeter please visit www.flowmeters.co.uk/og2-special-700-bar-high-pressure-oval-gear-flow-meter/ or contact Titan Enterprises on +44-1935-812790 / sales@flowmeters.co.uk.

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Worldwide HQ

Titan Enterprises Ltd.
Coldharbour Business Park
Sherborne
Dorset DT9 4JW
UK
tel. +44-1935-812790
email: sales@flowmeters.co.uk
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