The EuroFlo Industrial Pump system keeps Tunnel boring machine (TBM) cool by a continuous water provide. เพรสเชอร์เกจ is an east-west rail route that passes beneath the city of London using new twin-bore 21km tunnels.
EuroFlo pumps and the tanks are positioned at the floor; the water is pumped from there all the way down to the shaft and all alongside the tunnel up to the TBM. Once the water has handed through the TBM system the remaining water comes back via a filtration system to the tanks on the surface, out of the tunnel.
The water circuit provides 20 l/s to each TBM and eight l/s is used in the TBM for different works and 12 l/s returns to the tanks. The inlet stress needed ranges between four and 10 bar. On one web site three TBM’s are working and the pump system delivers 60 l/s, with the tools consisting of 1 single tank (3200m3) and one industrial pump used per tunnel. On another site, the set up support’s the excavation with only 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 via a serious underground section of the Cross rail project.
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