Device for carrying out field operation on offshore floating platform

Abstract

The utility model relates to a device for carrying out field operation on an offshore floating platform. The device is characterized by comprising a transport ship, a floating platform, a mobile crane and a working platform, wherein the working platform can be used for movable operation of the mobile crane and can be installed on site; the working platform is arranged at the floating platform; and the transport ship is provided with transfer equipment, and the transfer equipment is used for moving the mobile crane to the working platform. The offshore floating platform can be suitable for a heavy-weight hoisting scene, existing equipment does not need to be greatly transformed, and offshore floating platform operation with the lowest operation and maintenance cost is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the operation of offshore floating platform, especially the component replacement operation of offshore floating wind turbine. BACKGROUND

[0002] With the rapid development of offshore wind power industry, the operation and maintenance technology of offshore wind power gradually highlights, especially the offshore floating wind turbine platform volume is huge, and generally located in the deeper sea area, generally more than 40-50 kilometers offshore, water depth more than 60-70 meters of sea area, the technical method of offshore wind power operation and maintenance directly affects the working time and efficiency of offshore wind power operation and maintenance, and further affects the operation and maintenance cost, secondly, the technical method of offshore wind power operation and maintenance has important significance to the safety of offshore wind power. SUMMARY

[0003] In view of the defects and deficiencies of the prior art, the utility model aims at providing a device suitable for large weight lifting scene and applied to offshore floating platform.

[0004] To solve the above technical problems, the utility model adopts the technical scheme that,

[0005] A device for on-site operation on offshore floating platform, comprising a transport ship, a mobile crane and a work platform that can be installed on site and can be operated by the mobile crane, the work platform is used for detachable connection on the floating platform, the transport ship is provided with a transfer device, and the transfer device is used for moving the mobile crane to the work platform.

[0006] Further, the transfer device is a ship-mounted crane arranged on the transport ship, and the ship-mounted crane hoists the mobile crane to the work platform.

[0007] Further, the transfer device is a transfer bridge arranged on the transport ship, and the mobile crane walks to the work platform through the transfer bridge.

[0008] Further, the work platform comprises a platform surface and a support frame fixedly connected below the platform surface, and the two common ends of the platform surface and the support frame are provided with connecting pieces for detachable connection with the circular pipe beam of the floating platform.

[0009] Further, the transport ship is also provided with a compensation device for compensating the displacement of the transfer device and the sea wave.

[0010] The utility model discloses a kind of offshore floating platform operation devices, including transport ship 1, floating platform 7, mobile crane 2 and the movable work platform 6 of mobile crane 2, and the movable work platform 6 can be installed on site. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural schematic diagram of the utility model.

[0012] Figure 2 It is the structural schematic diagram of the utility model's work platform.

[0013] Figure 3 It is the schematic diagram of the utility model's working process.

[0014] Figure 4 It is another schematic diagram of the utility model's working process.

[0015] Figure 5 It is another schematic diagram of the utility model's working process.

[0016] Figure 6 It is the structural schematic diagram of the utility model's compensation device.

[0017] Figure 7 It is another structural schematic diagram of the utility model's compensation device. DETAILED DESCRIPTION

[0018] The utility model will be combined with the specific embodiment and detailed description of drawing, the illustrative embodiment and the explanation in it are only used to explain the utility model, but not as the limitation to the utility model.

[0019] The utility model relates to a kind of about offshore floating platform carries out the device of on-site operation, including transport ship 1, floating platform 7, mobile crane 2 and the movable work platform 6 of mobile crane 2, and the movable work platform 6 can be installed on site;The working platform 6 is arranged at the floating platform 7;The transport ship 1 is equipped with transfer equipment 3, and the transfer equipment 3 is used to move the mobile crane 2 to the working platform 6.

[0020] In the embodiment, the transfer equipment 3 is the transfer bridge arranged on transport ship 1;The mobile crane 2 is walked to the working platform 6 by the transfer bridge.Specifically, it can be through the way of erecting slope-platform at wharf, as shown in Figure 3 Mobile crane 2 moves to wharf platform 42 by slope 41, transport ship 1 sets up crane transfer bridge and puts down, sets between wharf platform 42 and the crane placement platform (the load platform 51 of motion compensation device 5 in the embodiment) of transport ship 1, and crane (or its main part) is walked to load platform 51 by self power (for example, track, wheel) or external force (for example, drag). As shown in Figure 4As shown, when the mobile crane 2 is transferred to the floating platform 7, the crane transfer bridge is set between the transport ship 1 and the working platform 6 of the floating platform 7, so that the mobile crane 2 directly reaches the working platform 6 through the crane transfer bridge 3, and the hoisting operation is carried out on the working platform 6 by the mobile crane 2, such as Figure 5 As shown.

[0021] It should be noted that the transport ship 1 only refers to the ship with the function of transportation, and is not limited to only transportation. When implementing the present application, common transport ships, supply ships, etc. can be used, and heavy crane ships or simple barges can also be used.

[0022] The mobile crane 2 refers to a crane that can be used on land (a "marine crane" only by changing the operation system without modifying the structure of the crane itself, which is actually a land-use crane), which can be moved and walked, such as common crawler cranes, wheeled cranes, etc. It can also be a crane that moves and walks by dragging. They are all common large cranes on land. The method of the present application aims to reduce operating costs and does not modify the crane itself, but directly applies the existing crane on land. Therefore, in addition to the aforementioned crawler cranes and wheeled cranes, other movable and walking cranes used on land can also be used in the method of the present application, and all belong to the protection scope of the present application. Among them, the mobile crane 2 used in the present embodiment is a crawler crane. The transfer device 3 can also be a ship-mounted crane (not shown in the figure) provided on the transport ship 1, which hoists the mobile crane 2 to the working platform 6.

[0023] As shown in the present embodiment, Figure 2 As shown, the working platform 6 includes a platform surface 61 and a support frame 62 fixedly connected below the platform surface 61. Both common ends (only one common end is shown in the figure) of the platform surface 61 and the support frame 62 are provided with connecting pieces 63 for detachable connection with the circular pipe cross beam 71 of the floating platform 7. Among them, the connecting pieces 63 are two sleeve pieces matching the shape of the circular pipe cross beam 71 and are fastened and fixed by fastening bolts 64. The two common ends of the platform surface 61 and the support frame 62 and the connecting pieces 63 are connected by a node structure 65 that can adjust the horizontal position of the bolt (such as a long circular hole arranged vertically up and down), so that it can tolerate the horizontal position tolerance of the support frame 62 during installation. A plurality of working platforms 61 with the same structure as described above can be connected in the horizontal direction. Each working platform 61 is set on the cross beam of the floating platform 7 to form an integral whole for use.

[0024] Since the included angle between the crossbeams (i.e., the round tube crossbeams 71) of the semi-submersible wind turbine platform is fixed, each support frame 62 can be made into a standard. Only different connectors 63 need to be provided according to the size of the round tube crossbeams 71, which improves the versatility of the work platform and reduces the operation and maintenance costs.

[0025] A further technical solution is that the transport ship 1 is also equipped with a compensation device 5 for compensating for the displacement of the transfer equipment 3 and the wave displacement. In this embodiment, the motion compensation device 5 used is, for example... Figure 6 As shown, the system includes at least three vertical transmission devices 52 arranged around the perimeter of the loading platform 51, and their hydraulic drive and control systems. Each vertical transmission device 52 includes at least one hydraulic cylinder system. The piston rod of the hydraulic cylinder system controls the vertical height change of the vertical transmission device. The upper end of each vertical transmission device 52 is rotatably connected to the landing platform 51. The hydraulic drive and control system includes multiple motion reference units placed on the loading platform 51 and the working platform 6. These sensors calculate the real-time elevation position at each location, then calculate the required position of the hydraulic cylinder piston rod at each location. The active and passive components of the hydraulic drive system coordinate to complete the positioning of the piston rod.

[0026] Specifically, the hydraulic cylinder system of the vertical transmission device 52 is arranged in the vertical direction, and the outer end of the piston rod inside the hydraulic cylinder is rotatably connected to the landing platform 51; the motion compensation device 5 also includes at least one constraint device 53, which is used to connect with the vertical transmission device 52 and constrain the horizontal displacement of the vertical transmission.

[0027] Alternatively, such as Figure 7 As shown, the vertical transmission device 52' can also be: a base 54 for fixed connection with the transport ship 1, at least one first link 55 rotatably connected to each end of the base 54, the distance d between the two connections being determined by the lateral load of the entire link system; the other end of each first link 55 is rotatably connected to a second link 56; the other end of the second link 56 is rotatably connected to the landing platform 51; the ends of the hydraulic cylinder system 57' are respectively connected to the connection points of the first link 55 and the second link 56.

[0028] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made in accordance with the features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An apparatus for performing field operations in relation to an offshore floating platform, characterised in that: The application relates to a floating platform system comprising a transport vessel, a mobile crane and a work platform which can be installed on site and which can be moved by the mobile crane; the work platform is arranged to be detachably connected to the floating platform; the transport vessel is provided with a transfer device for moving the mobile crane to the work platform.

2. An apparatus for performing field operations in relation to a floating offshore platform as claimed in claim 1, characterised in that: The transfer device is a ship-mounted crane arranged on the transport vessel, which hoists the mobile crane to the work platform.

3. An apparatus for performing field operations in relation to a floating offshore platform as claimed in claim 1, wherein: The transfer device is a transfer bridge arranged on the transport vessel; the mobile crane walks to the work platform through the transfer bridge.

4. An apparatus for performing field operations in relation to a floating offshore platform as claimed in claim 1, wherein: The work platform comprises a platform surface and a support frame fixedly connected below the platform surface; two common ends of the platform surface and the support frame are provided with connecting pieces for detachably connecting with a round pipe cross beam of the floating platform.

5. An apparatus for performing field operations in relation to a floating offshore platform as claimed in claim 1, wherein: The transport vessel is further provided with a compensation device for compensating displacement of the transfer device and sea waves.

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