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Bedford Pumps Ltd
Contents: Who are we? High Head Sewage Pumps Minworth Altmouth Crossness Belfast How do we do it?
Pump Design and Innovation (Pushing the Boundaries) Bedford Pumps - - PowerPoint PPT Presentation
Pump Design and Innovation (Pushing the Boundaries) Bedford Pumps - - PowerPoint PPT Presentation
Pump Design and Innovation (Pushing the Boundaries) Bedford Pumps Ltd Contents: Who are we? High Head Sewage Pumps Minworth Altmouth Crossness Belfast How do we do it? Who are we? Based in Bedford, England Established in 1987 by former
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Who are we?
Based in Bedford, England Established in 1987 by former members of W H Allen / Gwynnes Core business - Design and manufacture of large centrifugal pumps Ranges from 100 l/s to 12,000 l/s at 3m to 100m head Full M & E Capability We offer the complete “Engineered Solution”
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High Head Sewage Pumps
Traditional limit 70m head Increase in transfer duties Need for higher heads High speed pumps not preferred Two-stage pumping problematic Developed 100m pump
100 20 10 200 1000 5000 Flow (l/s) Head (m) 100
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High Head Sewage Pumps
Maximum 4-pole speeds Simplified hydraulic design Easier to control Reduced station size Minimum 100mm solid sphere
100 20 10 200 1000 5000 Flow (l/s) Head (m) 100
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High Head Sewage Pumps
Dover & Folkestone Pumping Stations unique in Europe due to high head capabilities Two sets of pumps in series, one wet well submersible, one dry well MFV Required to pump total of 155m in 94m & 61m stages (i.e. to the top of the White Cliffs of Dover) Much larger solids handling capabilities Improved previous blocking issues
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High Head Sewage Pumps
Lytham Transfer PS Three pumps (D/A/S) 325 l/s each 100m head 500 kW motors
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High Head Sewage Pumps
White Hoe PS (I.of.M.) Replaced problematic existing units Four units 260 l/s each 90m head Motors 350 kW
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Minworth Settled Sewage Pumping Station
Largest PS in Severn Trent Water region BPL invited to participate in design Free exchange of ideas No formal enquiry No specification Two years to completion
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Minworth Settled Sewage Pumping Station
Maximum flow 14,000 l/s BPL involved in all aspects
- f station design
Six pumps installed Open-top canisters
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Minworth Settled Sewage Pumping Station
Total value £650k Pump Efficiency 89% Combined Efficiency 85.5% Motors 160 kW, 14-pole 424 rpm
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Belfast Terminal Pumping Station
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Belfast Terminal Pumping Station
One of the biggest infrastructure projects in Northern Ireland Pumps fundamental to project Provide protection against a 1 in 30 year storm event Six large Storm Pumps and two smaller FFT Pumps supplied
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Belfast Terminal Pumping Station
Shaft 40m Deep 36m Diameter High Grit Content Maximum Storm Flow 18,000 l/s Head Range 10m to 36m Ensure a minimum self-cleansing velocity greater than 1.8 m/s
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Belfast Terminal Pumping Station
Traditional pumping method Bedford Pumps’ solution
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Belfast Terminal Pumping Station
Drive shaft & associated supports/bearings eliminated Overall cost of installation minimised Low capital and maintenance costs
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Belfast Terminal Pumping Station
Storm Pumps 3,500 l/s each Heads up to 36m 960 kW 3.3kV 490 rpm (fixed speed) Water Cooled Eex n Temp T3 IP68
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Belfast Terminal Pumping Station
DWF Pumps 750 l/s each Heads up to 41m 370 kW 400 V 780 rpm (V. speed) Water Cooled Eex n Temp T3 IP68
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Crossness
One of Thames Water’s largest STW’s Contract value £1.5m Replacing 50 year old Allen Gwynne pumps 13 pumps replaced with new drywell submersible pumps
Low Level – 650 kW High Level – 270 kW Transfer – 130 kW
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Crossness
All pumps 180mm diameter solids handling Eliminate solid drive shafting Variable speed optimised to give best LWLC
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Altmouth Pumping Station
Replacement of four Vickers 2.2m diameter Storm Pumps, 19.8 m3/s each Originally Diesel drive via David Brown Gearbox £4m M&E contract. –BPL Principal Contractor
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Altmouth Pumping Station
BPL involvement from 2005 Close discussion with EA & Halcrow Initial “new” design 3 pumps at 15m3/s each Similar arrangement anticipated
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Altmouth Pumping Station
BPL suggested 4 pumps rather than 3 Head reduced from 5m to 3.8m as a result Power reduced from 2940 kW to 2320 kW Canister pumps become a real possibility
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Altmouth Pumping Station
Design further enhanced by introduction of gearbox within the canister Motors now 6-pole rather than 26 –pole Motors 620 kW 3.3 kV
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Altmouth Pumping Station
Scope of Supply Pumps Motors Integral gearbox Canister 11kV & 415V Transformers Starters & Switchgear Cabling & Instrumentation Removal of existing plant Installation & commissioning
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Altmouth Pumping Station
All four pumps now installed & operating Two additional DWF Pumps added to contract
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Altmouth Pumping Station
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Altmouth Pumping Station
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Altmouth Pumping Station
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How do we do it?
Company Size Flexibility in production Employees “Can Do” approach Open discussion And basically....
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How do we do it?
“...Any Colour You Like....”
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An Acknowledgement
“We do these things not because they are easy,
but because they are hard”
John F. Kennedy, Sept 12th 1962
We know that none of this happens without an element of risk. We also know we could not do this on our own. Full acknowledgment is due to those who have supported and helped us along the way.
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