A ballast water system with pipe section settling

Abstract

The invention relates to a pipe joint immersing ballast water system, particularly to a ballast water system which achieves stable and rapid pipe joint immersion by controlling water storage of a ballast water tank. The pipe joint immersing ballast water system comprises a pipe joint control circuit, the ballast water tank and a ballast pump, wherein the ballast pump is connected with the ballast water tank through pipes. According to the pipe joint immersing ballast water system, by means of the design of the ballast water tank and according to the buoyancy principle, the dead weight of a pipe joint can be controlled by injecting water into or draining water out of the ballast water tank to adapt to buoyancy at different depths under the seat, so that rapid, smooth and stable pipe joint immersion can be achieved, the immersing speed of the pipe joint can be matched with the descending and hoisting of sling cables, the load of the sling cables can be reduced, the immersion working precision can be enhanced, the immersion working speed can be increased, and the immersion working efficiency can be improved.

Description

technical field [0001] The invention relates to a ballast water system for sinking pipe joints, in particular to a ballast water system for realizing stable and fast sinking of pipe joints by controlling the water storage capacity of a ballast water tank. Background technique [0002] At present, underwater tunnels for vehicles are connected by multiple immersed tubes. The immersed tubes are relatively large in size and weight, and their length is about 100-200 meters. The immersed tubes are installed on the pre-laid foundation. When installing immersed pipes, the hoisting method of the installation ship is often used. The installation ship hangs both ends of the pipe joints through the vertical suspension cables; the system control circuit realizes the sinking of the pipe joints to be installed by controlling the lifting of the suspension cables; however, This method has high requirements on the settlement accuracy of pipe joints, and correspondingly, it is very difficult t...

AI Technical Summary

Problems solved by technology

When installing immersed pipes, the hoisting method of the installation ship is often used. The installation ship hangs both ends of the pipe joints through the vertical suspension cables; the system control circuit realizes the sinking of the pipe joints to be installed by controlling the lifting of the suspension cables; however, This method has high requirements on the settlement accuracy of pipe joints, and correspondingly, it is very difficult to control the settlement. It not only needs to reduce the influence of seawater buoyancy on the settlement of pipe joints, but also minimizes the load of the suspension cables; From the end to the cover and backfill stage, it is necessary to increase the self-weight of the pipe joint to resist the influence of the seabed tidal current on the stability of the pipe joint; at present, this problem has not been well resolved for the construction of pipe joint sinking

Images