Wind turbine installation vessel and a gravity center adjustment device thereof

Abstract

The present invention discloses a gravity center adjustment device for a wind turbine installation vessel, with the gravity center adjustment device ( 2 ) fixedly mounted to the outside of the vessel body ( 4 ) of the wind turbine installation vessel. The existence of the gravity center adjustment device ( 2 ) according to the present invention is independent from the vessel body and no longer limited by the size of the installation vessel and the size of the ballast bank provided in the vessel body of the wind turbine installation vessel. The size of the gravity center adjustment device ( 2 ) may be set as desired so that the adjustment ability of the gravity center adjustment device can be changed, whereby its ability for adjusting gravity center of the wind turbine installation vessel can be improved and the stability of the wind turbine installation vessel can be improved. Therefore, the wind turbine installation vessel can operate in an environment of poor weather condition, so that the operation efficiency can be improved and the cost of constructing a wind power plant on the offshore can be reduced. The present invention also discloses a wind turbine installation vessel including the above-mentioned gravity center adjustment device ( 2 ).

1 . A gravity center adjustment device for a wind turbine installation vessel, characterized in that, the gravity center adjustment device is fixedly mounted to an outside of a vessel body of the wind turbine installation vessel. 
     
     
         2 . The gravity center adjustment device according to  claim 1 , wherein the gravity center adjustment device comprises a mounting rack, a counterweight and a height adjuster for adjusting a relative height between the counterweight and the vessel body, with the mounting rack mounted to the vessel body by a connecting member, and the counterweight mounted to the mounting rack by the height adjuster. 
     
     
         3 . The gravity center adjustment device according to  claim 2 , wherein the mounting rack comprises a horizontal installation plate, and the counterweight is mounted to the horizontal installation plate by the height adjuster. 
     
     
         4 . The gravity center adjustment device according to  claim 3 , wherein the height adjuster is a screw stem, and at least one of the horizontal installation plate and the counterweight is provided with a screw hole that corresponds to the screw stem. 
     
     
         5 . The gravity center adjustment device according to  claim 4 , wherein the screw hole comprises a first screw hole which is formed in the counterweight, and a first end of the screw stem passes through the first screw hole or connects with the first screw hole, and is spaced from an upper surface of counterweight at an appropriate distance, while a second end of the screw stem is fixedly connected to the horizontal installation plate. 
     
     
         6 . The gravity center adjustment device according to  claim 3 , wherein the height adjuster is an oil cylinder, a piston barrel of the oil cylinder is fixed to the horizontal installation plate, and an end of a piston rod of the oil cylinder is fixedly connected with the counterweight. 
     
     
         7 . The gravity center adjustment device according to  claim 5 , wherein the gravity center adjustment device is mount below the vessel body. 
     
     
         8 . The gravity center adjustment device according to  claim 1 , wherein a plurality of the gravity center adjustment devices are evenly arranged on left and right sides of the vessel body. 
     
     
         9 . A wind turbine installation vessel, characterized by comprising a gravity center adjustment device according to  claim 1 . 
     
     
         10 . The wind turbine installation vessel according to  claim 9 , wherein a bottom surface of the vessel body is of a planar structure.