Euroflo Dredging pumps
At The london array
The client requires dredging pumps for sand and silt removal:
VBMS, an engineering consultancy company based in the Netherlands that specializes in sustainable energy projects, particularly the installation of grid-to-grid power cable connections for both onshore and offshore renewable energy sectors, sought assistance from Euroflo due to encountering a significant challenge while attempting to connect a supply cable to the base of several turbines on the London Array, situated in the outer Thames Estuary. The collaboration aimed to resolve the issue efficiently and ensure the successful completion of the project.
Euroflo deploy heavy duty Dragflow dregding pumps:
Euroflo was tasked with supplying dredging pumps for a project aimed at clearing seabed sand and sediment blocking a cable’s termination point and completing the connection of a wind turbine’s mains cable to a sub-station on land. The pumps needed to operate at depths of up to 20 meters, withstand seawater corrosion, and pump up to 100 tonnes of sand per hour. Euroflo provided the DP50 D and EL 60HD Dredging Pumps, with the former designated for duty and the latter for standby. Equipped with 30 meters of screened safety cable, both pumps were operated via an electronic soft-start control panel mounted on the barge’s deck, powered by a Euroflo 250kVA generator.
Euroflo supplied DP50 D and EL 60HD Dredging Pumps for a project clearing seabed sand and sediment obstructing a cable termination point and connecting a wind turbine’s mains cable to a land-based sub-station. Operating at depths up to 20 meters, these pumps moved sand, silt, and seawater through a 200mm diameter pipe to an open discharge on the seabed. Equipped with agitators, the pumps efficiently mixed the materials for effective clearing, with a capacity of up to 100 tonnes per hour.
The pumps were tasked with moving the mixture of sand, silt and seawater away from the immediate vicinity through 50m of a 200mm diameter pipe (supplied by Euroflo), to an open discharge located further along the seabed. The specific gravity of the mixture was around 1.3 -1.5 kg/m3 and contained solids up to 50mm in diameter. The agitators fitted to the Euroflo Dredging Pumps were able to ensure that the sand and silt was efficiently mixed with the seawater prior to discharge. This ensured that the operation (to clear the blocked area) was carried out as effectively as possible.
The key to success when using dredging pumps:
A key part of the success of this operation was to maintain the velocity of the mixture through the discharge pipe at above 3m/s, in order to prevent settlement. Both of the dredging pumps performed their job to a high standard and showed no signs of wear, despite the dredging pump’s exposure to such an abrasive mixture. This can be attributed to two key elements in Euroflo’s approach to the task. Firstly, we selected slow running 6 pole, 960rpm motors to reduce abrasion which is typical in these conditions. Secondly, we selected a tough high chrome content (28%) wet end to withstand the incredible wear challenges on the material.
Euroflo were able to offer a turn-key solution for VBMS; delivering all the equipment required by truck to the quayside for loading on the barge, and also providing a technician to assist with the set-up of the equipment.
View our range of dredging pumps that you can shop online here, or find out more about our Dragflow range by clicking here. While the Dragflow range is not currently available to shop online, you can purchase or hire Dragflow products by contacting us directly.
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