เกจแรงดันสูง keeps Tunnel boring machine (TBM) cool by a steady water supply. The Cross Rail venture is an east-west rail route that passes beneath town of London utilizing new twin-bore 21km tunnels.
EuroFlo pumps and the tanks are positioned at the floor; the water is pumped from there all the method down to the shaft and all alongside the tunnel as much as the TBM. Once the water has handed through the TBM system the remaining water comes back by way of a filtration system to the tanks on the floor, out of the tunnel.
The water circuit offers 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 pressure needed ranges between 4 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 one other website, the installation 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 whereas the TBM excavates via a significant underground part of the Cross rail challenge.