Constructing a turbomachinery installation for assembly onshore and installation on an offshore platform

1 . A turbomachinery installation for an offshore platform, comprising:

a train system including a power module, comprising:

a power source for supplying energy to the turbomachinery installation,

an enclosing structure that encloses the power source, and

a supporting baseplate coupled to the enclosing structure and the power source;

a load driven by the power module;

a torque tube baseplate on which the train system is installed, the torque tube baseplate comprising a main beam and transverse beams disposed perpendicular to the main beam; and

coupling members for coupling the supporting baseplate and the torque tube baseplate,

wherein at least one of the transverse beams is set at a height that is different than any other transverse beams, and

wherein the supporting baseplate is arranged between the power module and the torque tube baseplate.

2 . The turbomachinery installation according to claim 1 , wherein the power module comprises auxiliary equipment that is installed below the supporting baseplate and coupled to the torque tube baseplate.

3 . The turbomachinery installation according to claim 1 , wherein the power module comprises auxiliary equipment selected from a fuel oil pump, a liquid fuel damping bottle, a single cooler for back-purge, a back-purge tank, heat exchangers, gears, or pipes.

4 . The turbomachinery installation according to claim 1 , wherein the coupling members are arranged between the supporting baseplate and the torque tube baseplate.

5 . The turbomachinery installation according to claim 1 , wherein the coupling members are connected to the transversal beams and are arranged between the torque tube baseplate and the supporting baseplate, and wherein the coupling members are adjustable along the direction of an axis perpendicular to the direction of the main beam and the direction of the transversal beams.

6 . The turbomachinery installation according to claim 1 , further comprising:

a tank for collecting a bearing lube oil of the power source.

7 . The turbomachinery installation according to claim 1 , further comprising:

a tank for collecting a bearing lube oil of the power source,

wherein the torque tube baseplate comprises a housing portion shaped for housing the tank, and

wherein the housing portion is arranged below the power source close to the load.

8 . The turbomachinery installation according to claim 1 , further comprising:

a tank for collecting a bearing lube oil of the power source,

wherein the torque tube baseplate forms the tank, and

wherein the tank is integrated in the transversal beams.

9 . The turbomachinery installation according to claim 1 , further comprising:

a tank for collecting a bearing lube oil of the power source,

wherein the tank comprises two sub-tanks coupled to the main beam, and

wherein the main beam of the torque tube baseplate is arranged between the two sub-tanks.

10 . The turbomachinery installation according to claim 1 , further comprising:

a tank for collecting a bearing lube oil of the power source, the tank comprising two sub-tanks;

pipes; and

pumps,

wherein each sub-tank is defined by a lateral plate and part of transversal plates,

wherein the transversal plates cross the main beam, and

wherein pipes connect the sub-tanks and the pumps for pumping the oil within the tank.

11 . The turbomachinery installation according to claim 1 , wherein the coupling members comprise jacking screws provided with respective spherical support.

12 . The turbomachinery installation according to claim 1 , further comprising:

spherical joints arranged underneath the torque tube baseplate and adapted to compensate for a deformability of the offshore platform.

13 . The turbomachinery installation according to claim 1 , wherein the power module is preassembled.

14 . The turbomachinery installation according to claim 1 , wherein the load comprises a compressor or a pump.

15 . A method of assembling a turbomachinery installation, comprising:

installing an auxiliary equipment to a torque tube baseplate;

installing a load on the torque tube baseplate; and,

coupling a supporting baseplate of an enclosing structure of a power module onto the torque tube baseplate by means of one or more coupling members,

wherein the power module comprises a gas turbine;

wherein the torque tube baseplate comprising a main beam and transverse beams disposed perpendicular to the main beam; and

wherein at least one of the transverse beams is set at a height that is different than any other transverse beams.

16 . The method according to claim 15 , further comprising:

adjusting a mutual position between the power module and the torque tube baseplate through a manual or automatic regulation of the coupling members.

17 . The method according to claim 15 , wherein the coupling members comprise jacking screws provided with respective spherical support or washer.

18 . The method according to claim 15 , wherein the coupling members are placed between the torque tube baseplate and the supporting baseplate.

19 . The method according to claim 15 , further comprising:

connecting the load to the power source.