The EuroFlo Industrial Pump system keeps Tunnel boring machine (TBM) cool by a steady water supply. The Cross Rail project is an east-west rail route that passes beneath the city of London utilizing new twin-bore 21km tunnels.
เพรสเชอร์เกจไฮดรอลิค and the tanks are located on the floor; the water is pumped from there all the means down to the shaft and all along the tunnel up to the TBM. Once the water has passed by way of the TBM system the remaining water comes back via a filtration system to the tanks on the floor, out of the tunnel.
The water circuit supplies 20 l/s to each TBM and 8 l/s is used within the TBM for different 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 working and the pump system delivers 60 l/s, with the gear consisting of one single tank (3200m3) and one industrial pump used per tunnel. On another web site, the set up support’s the excavation with just one TBM with 20 litres/second and the water storage tank capability of 1100m3
EuroFlo use 37 kW vertical multistage Industrial pumps for the cooling system whereas the TBM excavates by way of a major underground section of the Cross rail venture.
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