EuroFlo at CrossRail

เกจวัดแรงดันน้ำ keeps Tunnel boring machine (TBM) cool by a steady water supply. The Cross Rail challenge is an east-west rail route that passes underneath the town of London using new twin-bore 21km tunnels.
EuroFlo pumps and the tanks are located on the floor; the water is pumped from there right down to the shaft and all along the tunnel up to the TBM. Once the water has handed through the TBM system the remaining water comes again via a filtration system to the tanks on the floor, out of the tunnel.
The water circuit provides 20 l/s to each TBM and 8 l/s is used in the TBM for various works and 12 l/s returns to the tanks. The inlet stress wanted ranges between 4 and 10 bar. On one site three TBM’s are operating and the pump system delivers 60 l/s, with the equipment consisting of one single tank (3200m3) and one industrial pump used per tunnel. On one other web site, the set up support’s the excavation with only one TBM with 20 litres/second and the water storage tank capacity of 1100m3
EuroFlo use 37 kW vertical multistage Industrial pumps for the cooling system while the TBM excavates via a major underground section of the Cross rail venture.
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