A method for integrally lifting a regasification module of a FSRU ship

Abstract

The present invention relates to a method for hoisting a regasification module of an FSRU ship as a whole, the method comprising the following steps: step 1, designing and manufacturing a special hoist, step 2, installing the special hoist, step 3, configuring the sling of the gantry crane, step 4, adjusting the position of the gantry crane, step 5, connecting the gantry crane with the regasification module, and step 6, hoisting the regasification module. The method of the present invention not only meets the hoisting requirements of the regasification module as a whole, but also avoids the purchase of large-tonnage standard shackles, ensures that the wire rope and the upper platform of the regasification module are always in a 90-degree vertical state during the hoisting process, realizes the safe hoisting of the module, greatly reduces the cost, and saves the construction period.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a method for integrally hoisting a regasification module of an FSRU ship. Background Art

[0002] A regasification module needs to be installed in the bow area of ​​the FSRU ship. The regasification module is built off-site with a total weight of about 800t. After construction, it is transported to the shipyard and hoisted onto the ship for installation. The regasification module has a total of 4 lifting points, which are arranged at the four corners of the upper platform, that is, the average force of a single lifting point is 200t. At present, there are no shackles in the shipyard that can meet this load. If a standard shackle of such a large tonnage is purchased again, there will be problems of high cost and long cycle.

[0003] In addition, according to technical requirements, the wire rope and the upper platform must always maintain a 90-degree vertical state during the lifting process. It is planned to use the shipyard's 800t gantry crane for lifting operations. If the gantry crane's own lifting row is directly used and the wire rope is connected to the lifting ring on the regasification module, the wire rope and the upper platform on the module cannot be guaranteed to be 90 degrees vertical, and a large angle will be formed with the lifting ring mainboard, which does not meet the lifting technical requirements. Therefore, the method of the present invention is studied. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a method for integrally lifting a regasification module of an FSRU ship, which can solve the problem that it is difficult to integrally lift a regasification module of an FSRU ship by using a gantry crane.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A method for hoisting a regasification module on an FSRU ship as a whole, wherein the overall weight of the regasification module on the FSRU ship is 800 tons, and a regasification module hoist is provided at each of the four corners of the upper part of the regasification module. The method comprises the following steps:

[0007] The first step is to design and manufacture a special lifting device, which structurally includes a main board, a body board, a first connecting plate and a second connecting plate. Two main boards arranged in parallel are vertically cross-connected with two body boards arranged in parallel, so that two rectangular connecting grooves on the main board connecting portion on the main board are respectively correspondingly clamped in two rectangular connecting grooves on the body board connecting portion on the body board. The main board and the body board are fixed into one body by welding the main board connecting portion and the body board connecting portion. A main board hanging hole is provided on each main board, and two body board hanging holes are provided on each body board.

[0008] The second step is to install a special lifting device, connect the mainboard lifting hole of the mainboard on the special lifting device to the regasification module hanging bracket through a pin shaft, so that the regasification module hanging bracket is located between the two mainboards (1) of the special lifting device, and then set four special lifting devices corresponding to the regasification module hanging brackets at the four corner positions on the regasification module;

[0009] The third step is to configure the slings of the gantry crane. The 350t lifting row on the 1# hook and 2# hook of the upper and lower car on the gantry crane is connected to the 250t lifting row through wire ropes, and the wire ropes are hung under the 250t lifting row. The 400t lifting row on the 3# hook of the lower car is connected to the 500t lifting beam through wire ropes, and the endless rope loop is hung under the 500t lifting beam.

[0010] Step 4: Connect the gantry crane to the regasification module, align the centerline of the gantry crane's main beam with the left-right centerline of the regasification module, and position the upper and lower trolleys directly above the left and right lifting points of the regasification module, and use steel wire ropes to connect the special lifting equipment;

[0011] The fifth step is to hoist the regasification module. Use the gantry crane to slowly lift the regasification module. By adjusting the force of the upper and lower trolleys of the gantry crane, the regasification module can be kept in a horizontal lifting state and then hoisted onto the ship for installation.

[0012] In the method for integrally lifting a regasification module of a FSRU ship of the present invention, the special lifting tool is used as a shackle, and the rated load of the shackle is 240t.

[0013] In the method for integrally lifting the regasification module of the FSRU ship of the present invention, the special lifting device and the regasification module lifting bracket are installed by passing the pin shaft through the mainboard lifting hole, and the rated load of the pin shaft used is 240t.

[0014] In the overall hoisting method for the FSRU ship regasification module of the present invention, the 350t hoisting row is folded in half by four 19m long steel wire ropes with a rated load of 60t, and then connected to the 250t hoisting row by four 85t shackles, and two steel wire ropes with a rated load of 120t are hung under the 250t hoisting row.

[0015] In the overall hoisting method for the regasification module of the FSRU ship of the present invention, the two pulleys on the left and the two pulleys on the right of the 400t hoisting row are respectively connected to the shackles with a rated load of 120t by folding two 19m-long steel wire ropes with a rated load of 60t, and then respectively connected to the two ends of the 500t hanging beam by a 15m-long steel wire rope with a rated load of 120t, and two endless rope loops with a rated load of 250t are hung on the two ends of the 500t hanging beam.

[0016] In the method for integrally hoisting a regasification module of a FSRU ship of the present invention, the length of the 500t hoisting beam is consistent with the distance between two corresponding hoisting points on the regasification module of the FSRU ship.

[0017] In the method for integrally lifting the regasification module of the FSRU ship of the present invention, the 250t jointless rope loop is connected to the lifting hole of the body plate of the special lifting device through a pin shaft with a rated load of 120t.

[0018] Compared with the prior art, the FSRU ship regasification module integral hoisting method of the present invention has the following advantages:

[0019] 1. The present invention designs, manufactures and uses special hoists (shackles), which not only meets the overall hoisting requirements of the regasification module, but also avoids the purchase of large-tonnage standard shackles, greatly reduces costs and saves cycles.

[0020] 2. The present invention meets the technical requirements for the overall lifting of the regasification module through the reasonable configuration of the lifting rigging of the gantry crane, so that the wire rope and the upper platform always maintain a 90-degree vertical state during the lifting process, thereby ensuring the safe lifting of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall hoisting of the FSRU ship regasification module of the present invention.

[0022] Figure 2 It is a three-dimensional schematic diagram of the hoisting of the FSRU ship regasification module of the present invention.

[0023] Figure 3 A schematic structural diagram of a special hoist used in the overall hoisting method of a regasification module of an FSRU ship according to the present invention.

[0024] Figure 4 This is a schematic front view of the connection between the gantry crane and the regasification module of the present invention.

[0025] Figure 5 It is a schematic side view of the connection between the gantry crane and the regasification module of the present invention.

[0026] Figure 6 It is a configuration diagram of the trolley sling under the gantry crane of the present invention.

[0027] Figure 7 It is a configuration diagram of the trolley sling on the gantry crane of the present invention.

[0028] in,

[0029] 1—240t pin 2—120t pin 3—85t shackle 4—250t lifting row 5—first 120t wire rope 6—second 120t wire rope 7—500t lifting beam 8—250t jointless rope loop 9—special lifting device 91—main board 92—body board 93—first double board 94—second double board 95—first connecting board 96—second connecting board 10—120t shackle DETAILED DESCRIPTION

[0030] The turning over method of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but this should not be used to limit the protection scope of the present invention.

[0031] The present invention relates to a method for hoisting a regasification module on a FSRU ship as a whole. The overall weight of the regasification module on the FSRU ship is 800 tons. A regasification module hoist is provided at each of the four corners of the upper part of the regasification module. The method comprises the following steps:

[0032] The first step is to design and manufacture a special lifting device 9, which structurally includes a main board 91, a body board 92, a first connecting plate 95 and a second connecting plate 96. The two main boards 91 arranged in parallel are vertically cross-connected with the two body boards 92 arranged in parallel, so that the two rectangular connecting grooves on the main board connecting part of the main board 91 are respectively correspondingly clamped in the two rectangular connecting grooves on the body board connecting part of the body board 92. The main board 91 and the body board 92 are fixed into one by welding the main board connecting part and the body board connecting part. A main board hanging hole is provided on each main board 91, and two body board hanging holes are provided on each body board 92.

[0033] For the special lifting device 9, the main board 91 includes a main board lifting part at the bottom and a main board connecting part at the top. A main board lifting hole is provided on the main board lifting part. The main board lifting hole is located on the center line of the main board 91. Two parallel rectangular connecting grooves are provided on the main board connecting part. The body plate 92 includes a body plate connecting part at the bottom and a body plate lifting part at the top. Two parallel rectangular connecting grooves are provided on the body plate connecting part. Two body plate lifting holes are provided on the body plate lifting part. The two body plate lifting holes are arranged on both sides of the center line of the body plate, and the connecting line between the two body plate lifting holes is perpendicular to the center line of the body plate 92. First reinforcing plates 93 are provided on both sides of the main board lifting hole on the main board 91, and second reinforcing plates 94 are provided on both sides of the body plate lifting hole on the body plate 92.

[0034] The same side of the two parallel main boards 91 is connected by a first connecting plate 95, and a first connecting plate 95 is vertically fixed to both sides of the main board connection part on the main board 91. The same side of the two parallel body boards 92 is connected by a second connecting plate 96, and a second connecting plate 96 is vertically fixed to both sides of the body board connection part on the body board 92.

[0035] like Figure 3 , Figure 4 and Figure 5As shown, the bottom of the sling is fixed to the regasification module sling M by passing the first pin through the two main plate lifting holes on the main plate 91, and the upper part of the special sling 9 is connected to the lifting wire rope by passing the second pin through the two body plate lifting holes on the body plate 92, and a lifting wire rope is provided corresponding to each of the two body plate lifting holes. In the present invention, according to the lifting ring structure form on the regasification module, the rated load requirements, the steel wire configuration of the gantry crane to be used, etc., a special sling 9 that meets the lifting requirements is designed and manufactured. The special sling is used as a shackle, and the rated load of the shackle is 240t.

[0036] The second step is to install the special hanger 9, connect the mainboard hanging hole of the mainboard 91 on the special hanger 9 to the regasification module hanging code M through the pin shaft, so that the regasification module hanging code M is located between the two mainboards 91 of the special hanger 9, and then set four special hangers 9 corresponding to the regasification module hanging code M at the four corner positions on the regasification module. The special hanger 9 is installed with the regasification module hanging code M through the mainboard hanging hole through the first pin shaft, such as Figure 3 and Figure 4 The pin used here is the first pin, whose rated load is 240t, that is, the 240t pin 1 in the figure.

[0037] The third step is to configure the slings of the gantry crane. The 350t lifting row on the 1# hook and 2# hook of the gantry crane is connected to the 250t lifting row 4 through steel wire ropes, and the steel wire ropes are hung under the 250t lifting row 4. The 400t lifting row on the 3# hook of the lower trolley is connected to the 500t lifting beam 7 through steel wire ropes, and the endless rope loop is hung under the 500t lifting beam 7. The 350t lifting row is folded in half through four 19m long steel wire ropes with a rated load of 60t, and then connected to the 250t lifting row 4 using four 85t shackles 3. Two steel wire ropes with a rated load of 120t are hung under the 250t lifting row 4, that is, Figure 5 The first 120t steel wire rope 5 and the second 120t steel wire rope 6 in the 400t lifting row are connected to the shackle 10 with a rated load of 120t by folding two 19m long steel wire ropes with a rated load of 60t, and then connected to the two ends of the 500t lifting beam 7 by a 15m long steel wire rope with a rated load of 120t. Two endless rope loops 8 with a rated load of 250t are hung on the two ends of the 500t lifting beam 7. The 250t endless rope loops 8 are connected to the body plate lifting holes of the special lifting device 9 through the pin 2 with a rated load of 120t. Figure 5 and Figure 6 The upper part of the special lifting device 9 is connected to the lifting wire rope through the second pin shaft passing through the two body plate lifting holes on the body plate 92, and the second pin shaft is a pin shaft 2 with a rated load of 120t.

[0038] The fourth step is to connect the gantry crane to the regasification module, so that the center line of the gantry crane's main beam is consistent with the left and right center line of the regasification module, so that the upper and lower trolleys are located directly above the left and right lifting points of the regasification module, and use wire ropes to connect the special lifting equipment 9. The length of the 500t lifting beam 7 is consistent with the distance between the two corresponding lifting points on the FSRU ship regasification module, which is about 14m, so that the wire rope can maintain 90° with the regasification module, ensuring smooth operation of horizontal lifting.

[0039] The fifth step is to hoist the regasification module. Use the gantry crane to slowly hoist the regasification module. By adjusting the force of the upper and lower trolleys of the gantry crane, keep the regasification module in a horizontal hoisting state, and hoist it onto the ship for installation. The hoisting state is as follows: Figure 1 and Figure 2 shown.

[0040] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the protection scope of the present invention is limited by the appended claims.

Claims

1. A method for hoisting a regasification module on a FSRU ship as a whole, wherein the overall weight of the regasification module on the FSRU ship is 800 tons, and a regasification module hoisting bracket is provided at each of the four corners of the upper part of the regasification module, characterized in that: The method comprises the following steps: The first step is to design and manufacture a special lifting device, which structurally comprises a main board (1), a body board (2), a first connecting plate (5) and a second connecting plate (6), wherein two main boards (1) arranged in parallel are vertically cross-connected with two body boards (2) arranged in parallel, so that two rectangular connecting grooves on the main board connecting portion on the main board (1) are respectively correspondingly clamped in two rectangular connecting grooves on the body board connecting portion on the body board (2), and the main board (1) and the body board (2) are fixed to each other as a whole by welding the main board connecting portion and the body board connecting portion, and each main board (1) is provided with a main board hanging hole, and each body board (2) is provided with two body board hanging holes; The second step is to install a special lifting device, connect the mainboard lifting hole of the mainboard (1) on the special lifting device to the regasification module hanging bracket through a pin shaft, so that the regasification module hanging bracket is located between the two mainboards (1) of the special lifting device, and then set four special lifting devices corresponding to the regasification module hanging brackets at four corner positions on the regasification module; The third step is to configure the slings of the gantry crane. The 350t lifting row on the 1# hook and 2# hook of the upper and lower car on the gantry crane is connected to the 250t lifting row through wire ropes, and the wire ropes are hung under the 250t lifting row. The 400t lifting row on the 3# hook of the lower car is connected to the 500t lifting beam through wire ropes, and the endless rope loop is hung under the 500t lifting beam. Step 4: Connect the gantry crane to the regasification module, align the centerline of the gantry crane's main beam with the left-right centerline of the regasification module, and position the upper and lower trolleys directly above the left and right lifting points of the regasification module, and use steel wire ropes to connect the special lifting equipment; The fifth step is to hoist the regasification module. Use the gantry crane to slowly lift the regasification module. By adjusting the force of the upper and lower trolleys of the gantry crane, the regasification module can be kept in a horizontal lifting state and then hoisted onto the ship for installation.

2. A method for integrally lifting a regasification module of a FSRU ship according to claim 1, characterized in that: The special spreader is used as a shackle, and the rated load of the shackle is 240t.

3. A method for integrally lifting a regasification module of a FSRU ship according to claim 1 or 2, characterized in that: The special lifting device and the regasification module hanging code are installed by passing the pin shaft through the mainboard hanging hole, and the rated load of the pin shaft used is 240t.

4. The method for integrally lifting a regasification module of a FSRU ship according to claim 1, characterized in that: The 350t lifting row is folded in half through four 19m long steel wire ropes with a rated load of 60t, and then connected to the 250t lifting row using four 85t shackles. Two steel wire ropes with a rated load of 120t are hung below the 250t lifting row.

5. The method for integrally lifting a regasification module of a FSRU ship according to claim 1, characterized in that: The two pulleys on the left and the two pulleys on the right of the 400t lifting row are respectively connected to the 120t shackles with a rated load through two 19m long steel wire ropes with a rated load of 60t, and then connected to the two ends of the 500t lifting beam through 15m long steel wire ropes with a rated load of 120t. Two endless rope loops with a rated load of 250t are hung at both ends of the 500t lifting beam.

6. A method for integrally hoisting a regasification module of a FSRU ship according to claim 1 or 5, characterized in that: The length of the 500t lifting beam is consistent with the distance between the two corresponding lifting points on the regasification module of the FSRU ship.

7. The method for integrally lifting a regasification module of a FSRU ship according to claim 5, characterized in that: The 250t jointless rope loop is connected to the body lifting hole of the special lifting device through a pin shaft with a rated load of 120t.

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