An installation vessel, installation equipment and installation method for an offshore platform

Abstract

The application relates to the offshore platform construction technical field and discloses an offshore platform installation ship, installation equipment and an installation method, wherein the installation ship is used for transporting an offshore platform to an offshore foundation, the installation ship comprises a bow and a deck, the bow drags the deck through a tow rope; the deck comprises the same number of active decks and passive decks, the width of the deck is smaller than the spacing of pile legs of the offshore platform; at least one side surface of the active deck is provided with a rotary telescopic mechanism, the rotary telescopic mechanism comprises a locking rod, a telescopic motor and a rotary motor, the end of the locking rod is provided with a radial protrusion, the telescopic motor is fixed in the active deck, the telescopic motor is in transmission connection with the locking rod, the rotary motor is fixed on the locking rod, and the rotary motor is in transmission connection with the radial protrusion; at least one side surface of the passive deck is provided with a locking groove, and the notch of the locking groove is provided with a baffle; the telescopic motor drives the radial protrusion to extend into the locking groove, and the rotary motor drives the radial protrusion to rotate in the locking groove and abut against the inner side of the baffle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore platform construction, in particular to an offshore platform installation ship, installation equipment and installation method. BACKGROUND

[0002] At present, with the growth of global demand for renewable energy, offshore wind power as a clean and efficient energy form is valued. The scale of offshore wind power projects is expanding, and the construction and power transmission technology requirements in deep water areas are improving, at which time the application of flexible direct current (VSC-HVDC) technology is important.

[0003] At present, the offshore wind power flexible direct current transmission platform is mostly installed by using the traditional floating and towing method, and a semi-submersible ship is used for installation. However, this method has limitations. With different wind power projects, the sizes of different offshore wind power flexible direct current transmission platforms (hereinafter referred to as offshore platforms) are quite different. The procurement and use of semi-submersible ships of different sizes will lead to an increase in cost, and it is also difficult to store semi-submersible ships of different sizes.

[0004] Therefore, a transportation device and a transportation method capable of transporting offshore platforms of different sizes are needed. SUMMARY

[0005] The purpose of the present application is to provide a transportation device and a transportation method capable of transporting offshore platforms of different sizes.

[0006] In order to achieve the above-mentioned purpose, the present application provides an offshore platform installation ship, installation equipment and installation method. Specifically, the present application is realized by the following scheme:

[0007] In a first aspect of the present application, an offshore platform installation ship is provided for transporting an offshore platform to an offshore foundation. The installation ship includes a bow and a deck, and the bow drags the deck through a tow rope. The deck includes the same number of active decks and passive decks, and the width of the deck is less than the spacing of the legs of the offshore platform. At least one side of the active deck is provided with a rotary telescopic mechanism. The rotary telescopic mechanism includes a locking rod, a telescopic motor and a rotary motor. The end of the locking rod is provided with a radial protrusion. The telescopic motor is fixed in the active deck, and the telescopic motor is in transmission connection with the locking rod. The rotary motor is fixed on the locking rod, and the rotary motor is in transmission connection with the radial protrusion. At least one side of the passive deck is provided with a locking groove, and the notch of the locking groove is provided with a baffle. The telescopic motor drives the locking rod to extend from the side of the active deck, the radial protrusion extends into the locking groove, and the rotary motor drives the radial protrusion to rotate in the locking groove, so that the radial protrusion abuts against the inside of the baffle to limit the relative movement of the active deck and the passive deck along the axial direction of the locking rod.

[0008] In an embodiment, the installation ship further comprises a plurality of installation rails, each of the plurality of installation rails having a pulley, the plurality of installation rails being configured to carry the offshore platform, the deck having a strip-shaped slot configured to accommodate the pulley.

[0009] In another embodiment, the strip-shaped slot has a plurality of protrusions arranged uniformly therein, a distance between two adjacent protrusions being equal to a diameter of the pulley, and a mounting interval of the pulley along the strip-shaped slot being a multiple of an arrangement interval of the protrusions.

[0010] In yet another embodiment, the installation ship further comprises a protective cover and a protective net, the protective cover having a first rope winding machine and a first adjusting rope installed at each of four corners of a top portion of the protective cover, the protective cover being installed on a top portion of the offshore platform, the protective net being installed between the protective cover and the active deck or between the protective cover and the passive deck, the four first rope winding machines being installed at the four corners of the deck respectively, the first adjusting rope having one end fixed on the protective cover and the other end wound into the first rope winding machine.

[0011] In an embodiment, the top portion of the protective cover has an infrared signal transmitter, an infrared signal receiver, a transmitter support and a shock-absorbing weight installed at each of the four corners, the transmitter support being fixed on the protective cover, the infrared signal transmitter being rotatably connected to the transmitter support at an upper end thereof, the shock-absorbing weight being fixed on the infrared signal transmitter at a lower end thereof, the infrared signal transmitter being configured to emit an infrared signal to another corner, and the infrared signal receiver being configured to detect whether there is an infrared signal in the other corner.

[0012] In yet another embodiment, the bow of the installation ship is provided with an infrared positioning device, an air cushion and an inflator, the inflator being configured to inflate the air cushion when the infrared positioning device detects that the installation ship reaches the offshore foundation, so that the air cushion can buffer the collision between the bow and the offshore foundation.

[0013] In a second aspect, the present application provides an installation device for an offshore platform, the installation device comprising: an offshore platform; an offshore foundation, the offshore foundation comprising a cylindrical monopod platform, the cylindrical monopod platform being fixed to a seabed at a lower portion thereof and having a connection platform extending above a sea surface; and the installation ship provided in the first aspect of the present application, the installation ship being configured to transport the offshore platform to the connection platform, and the connection platform being configured to carry and fix the offshore platform.

[0014] In an embodiment, the offshore platform comprises a plurality of pile legs, each of the plurality of pile legs having three second rope winding machines and three second adjusting ropes installed thereon, and the connection platform comprising a plurality of bearing columns corresponding to the pile legs one by one, the pile legs being cylindrical, the three second rope winding machines being installed on the pile legs uniformly along a circumferential direction, one end of the second adjusting rope being connected to the bearing column, and the other end of the second adjusting rope being wound into the second rope winding machine.

[0015] In another embodiment, the connecting platform further comprises a plurality of hollow sleeves corresponding to the bearing columns, the hollow sleeves have a hole diameter equal to the diameter of the pile leg, the hollow sleeves are telescopically connected to the bearing columns, the bearing columns are provided with three first iron rings, the hollow sleeves are provided with three second iron rings, and the bearing columns are connected to the second adjusting ropes through the first iron rings or the second iron rings.

[0016] Based on the above scheme, the cylindrical single-column platform comprises a fixed end, a movable end and an elevator, the fixed end is fixedly connected to the seabed, the movable end is fixedly connected to the connecting platform, and the movable end and the fixed end are respectively connected to two ends of the elevator.

[0017] In a third aspect, the application provides a method for installing an offshore platform, which is applied to the installation device provided in the second aspect of the application. The method comprises the following steps: determining the number of active decks and passive decks according to the size of the offshore platform; controlling the telescopic motor to drive the locking rod to extend from the side of the active deck, and the radial protrusion to extend into the locking groove; controlling the rotary motor to drive the radial protrusion to rotate in the locking groove, so that the radial protrusion abuts against the inner side of the baffle, thereby fixing the active deck and the passive deck to form a deck; placing the offshore platform on the deck; connecting the bow to the deck, and transporting the offshore platform to the connecting platform through the bow; and fixing the offshore platform on the connecting platform.

[0018] Based on the above scheme, in an embodiment, the step of fixing the offshore platform on the connecting platform comprises the following steps: controlling each second rope reel to release the second adjusting rope; fixing the second adjusting rope on the bearing column; and controlling each second rope reel to tighten the second adjusting rope, so that the pile leg is matched with the corresponding bearing column.

[0019] In an embodiment, the step of fixing the second adjusting rope on the bearing column and controlling each second rope reel to tighten the second adjusting rope, so that the pile leg is matched with the corresponding bearing column, comprises the following steps: fixing the second adjusting rope on the first iron ring; controlling each second rope reel to tighten the second adjusting rope, so that the pile leg is aligned with the hollow sleeve; releasing the second adjusting rope, and fixing the second adjusting rope on the second iron ring; and controlling each second rope reel to tighten the second adjusting rope, so that the hollow sleeve is pulled out of the bearing column, and the pile leg is inserted into the hollow sleeve.

[0020] In another embodiment, the step of transporting the offshore platform to the connecting platform through the bow comprises the following steps: controlling the infrared signal transmitter to emit an infrared signal to another corner; and when it is detected that the infrared receiver does not receive the infrared signal from the other corner, controlling the first rope reel to tighten or release the first adjusting rope until the infrared receiver receives the infrared signal from the other corner.

[0021] In another embodiment, after the offshore platform is transported to the connecting platform through the bow, the method further comprises the following step: when the distance between the bow and the offshore foundation is less than a preset value according to the position information fed back by the infrared positioning device, controlling the inflator to inflate the air cushion.

[0022] Compared with the prior art, the offshore platform installation ship, the installation device and the installation method have the beneficial effects that the deck of the installation ship can be freely disassembled and combined, the active deck and the passive deck can be locked or unlocked through the telescopic and rotatable structure, the deck of different sizes can be obtained by combination, other size of the transport ship does not need to be replaced, and the requirements of transporting offshore platforms of different sizes can be met. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of an offshore platform installation ship according to an embodiment of the present application.

[0024] Figure 2 is a structural schematic diagram of an active deck of an installation ship according to an embodiment of the present application.

[0025] Figure 3 is an assembly schematic diagram of a deck of an installation ship according to an embodiment of the present application.

[0026] Figure 4 is an assembly schematic diagram of a deck and an installation rail according to an embodiment of the present application.

[0027] Figure 5 is a structural schematic diagram of a protrusion of a fixed installation rail according to an embodiment of the present application.

[0028] Figure 6 is a cross-sectional schematic diagram of a deck with a protrusion according to an embodiment of the present application.

[0029] Figure 7 is a schematic diagram of an installation ship transporting an offshore platform according to an embodiment of the present application.

[0030] Figure 8 is a structural schematic diagram of an infrared emitter according to an embodiment of the present application.

[0031] Figure 9 is a working schematic diagram of an infrared emitter according to an embodiment of the present application.

[0032] Figure 10 is a structural schematic diagram of a cylinder type single column platform according to an embodiment of the present application.

[0033] Figure 11 is a connection structural schematic diagram of a connection platform and an offshore platform according to an embodiment of the present application.

[0034] Figure 12Fig. 3 is another schematic view of a connection structure of a connection platform and an offshore platform according to an embodiment of the present application.

[0035] Figure 13 Fig. 4 is a schematic view of a connection platform with a hollow sleeve according to an embodiment of the present application.

[0036] Figure 14 Fig. 5 is a schematic view of a connection platform with a lifting structure according to an embodiment of the present application.

[0037] Figure 15 Fig. 6 is a flowchart of a method for installing an offshore platform according to an embodiment of the present application.

[0038] Figure 16 Fig. 7 is another flowchart of a method for installing an offshore platform according to an embodiment of the present application.

[0039] Figure 17 Fig. 8 is still another flowchart of a method for installing an offshore platform according to an embodiment of the present application.

[0040] Reference signs:

[0041] 1, installation equipment, 10, installation ship, 101, bow, 1011, infrared positioning device, 1012, air cushion, 1013, inflator, 102, deck, 1021, active deck, 1022, passive deck, 10211, locking rod, 10212, telescopic motor, 10213, rotary motor, 10214, radial protrusion, 10221, locking groove, 10222, baffle, 1023, strip-shaped groove, 10231, protrusion, 103, tow rope, 104, installation rail, 1041, pulley, 105, protective cover, 106, protective net, 1051, first rope winding machine, 1052, first adjusting rope, 1053, infrared signal transmitter, 10531, infrared signal, 1054, infrared signal receiver, 1055, transmitter support, 1056, shock-absorbing weight, 20, offshore platform, 201, pile leg, 2011, second rope winding machine, 2012, second adjusting rope, 30, offshore foundation, 301, barrel-shaped single-column platform, 3011, connection platform, 30111, bearing column, 30112, hollow sleeve, 30113, first iron ring, 30114, second iron ring, 30115, high-strength bolt, 3012, fixed end, 3013, movable end, 3014, elevator, 2, seabed, 3, sea surface. DETAILED DESCRIPTION

[0042] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0043] In the description of the present application, it should be understood that the term "offshore platform" used in the present application is used to refer to, but not limited to, offshore wind power flexible HVDC transmission platform, and can also be applied to any offshore platform capable of being transported by floating towing method, such as offshore oil platform, large offshore liquefied natural gas (LNG) production platform, large offshore comprehensive fishery breeding platform, etc. The solutions applied to different offshore platforms also fall within the protection scope of the present application.

[0044] With the increasing demand for renewable energy worldwide, offshore wind power, as a clean and efficient form of energy, has gradually attracted attention. The scale of offshore wind power projects is expanding, especially in deep water areas away from land, and the technical requirements for construction and power transmission are also increasing. In this context, the application of flexible HVDC (VSC-HVDC) technology is particularly important.

[0045] However, before the existing offshore platform is put into operation, the offshore platform needs to be transported to the designated location for assembly. Due to different performance parameters, the sizes of different types of offshore platforms may have large differences. Using different transportation tools for different offshore platforms obviously has high cost, and multiple transportation tools are also difficult to store when not in use.

[0046] Therefore, in order to solve the problems of high cost and difficult storage of offshore platforms of different sizes, the present application proposes an installation ship 10, installation equipment 1 and installation method of offshore platform 20.

[0047] As shown in Figure 1 , Figure 2 and Figure 3 , the installation ship 10 of the offshore platform 20 of the preferred embodiment of the present application is used to transport the offshore platform 20 to the offshore foundation 30. The installation ship 10 includes a bow 101 and a deck 102. The bow 101 drags the deck 102 through a tow rope 103. The deck 102 includes the same number of active decks 1021 and passive decks 1022. The width of the deck 102 is less than the spacing of the legs 201 of the offshore platform 20.

[0048] At least one side of the active deck 1021 is provided with a rotary telescopic mechanism. The rotary telescopic mechanism includes a locking rod 10211, a telescopic motor 10212 and a rotary motor 10213. The end of the locking rod 10211 is provided with a radial protrusion 10214. The telescopic motor 10212 is fixed in the active deck 1021. The telescopic motor 10212 is in transmission connection with the locking rod 10211. The rotary motor 10213 is fixed on the locking rod 10211. The rotary motor 10213 is in transmission connection with the radial protrusion 10214. At least one side of the passive deck 1022 is provided with a locking groove 10221. The notch of the locking groove 10221 is provided with a baffle 10222.

[0049] Wherein, the telescopic motor 10212 drives the locking rod 10211 to stretch out from the side of the active deck 1021, the radial protrusion 10214 stretches into the locking groove 10221, the rotary motor 10213 drives the radial protrusion 10214 to rotate in the locking groove 10221, and the locking rod 10211 rotates to the radial protrusion 10214 to abut against the inside of the blocking piece 10222, so as to limit the relative movement of the active deck 1021 and the passive deck 1022 along the axial direction of the locking rod 10211.

[0050] Through the above scheme, the locking rod 10211 is driven by the motor with the functions of stretching and rotating, and the radial protrusion 10214 of the locking rod 10211 and the blocking piece 10222 of the locking groove 10221 form a matching interlocking structure, so that the active deck 1021 and the passive deck 1022 are fixedly connected. Figure 3 For example, after the locking rod 10211 of the active deck 1021 deeply enters the locking groove 10221 of the passive deck 1022, the radial protrusion 10214 can abut against the blocking piece 10222 by rotating 90 degrees, so as to prevent the locking rod 10211 from being pulled out. At the same time, the depth of the locking groove 10221 can limit the locking rod 10211 from continuing to stretch in, so as to realize the fixed connection of the active deck 1021 and the passive deck 1022. Therefore, when a larger offshore platform 20 needs to be transported, the number of the active deck 1021 and the passive deck 1022 can be increased, and when a smaller offshore platform 20 needs to be transported, the number of the active deck 1021 and the passive deck 1022 can be appropriately reduced.

[0051] Therefore, the deck 102 with variable size is realized, and since the size of the deck 102 is variable, when transporting cargos with different sizes, the transportation equipment does not need to be replaced, and the transportation of offshore platforms 20 with different sizes is competent. The monolithic design enables the deck 102 to be stored in a split manner, so as to reduce the space occupation during storage.

[0052] The active deck 1021 and the passive deck 1022 in the present application can be provided with the structures of the locking rod 10211 and the locking groove 10221 on multiple sides, so as to realize rich combination modes, which are not limited in the present application. For example, Figure 1 For example, the locking rod 10211 and the locking groove 10221 are provided on two sides, so as to realize the assembly of two active decks 1021 and two passive decks 1022.

[0053] It can be understood that the supporting rope can be any rope that meets the mechanical performance requirements, such as a steel wire rope, a synthetic fiber rope, a polyester fiber rope (PET), a nylon fiber rope, a high-strength polyethylene rope (UHMWPE), etc.

[0054] As an example, polyester fiber rope can be used as the material of the supporting rope. The polyester fiber rope has high strength and can bear large tension. In addition, the polyester fiber rope has light weight, is more convenient to operate than steel wire rope, has large buoyancy in water, and is difficult to sink.

[0055] In an embodiment of the present application, as shown in Figure 4 The installation ship 10 can also include a plurality of installation rails 104, each of which has a pulley 1041, and the plurality of installation rails 104 are used to carry the offshore platform 20. A strip-shaped groove 1023 is formed on the deck 102, and the strip-shaped groove 1023 is used to place the pulley 1041.

[0056] The pulley 1041 can be placed in the strip-shaped groove 1023, and then placed in the installation rail 104. The offshore platform 20 can be assembled by sliding through the installation rail 104. In combination with the traditional lifting method, more assembly methods can be provided to cope with various offshore platforms 20.

[0057] On this basis, as shown in Figure 5 and Figure 6 In an embodiment of the present application, a plurality of protrusions 10231 are uniformly arranged in the strip-shaped groove 1023. The distance between two adjacent protrusions 10231 is equal to the diameter of the pulley 1041, and the installation interval of the pulley 1041 along the strip-shaped groove 1023 is a multiple of the arrangement interval of the protrusions 10231.

[0058] The distance between the protrusions 10231 is equal to the diameter of the pulley 1041, so that when the pulley 1041 is clamped in the middle of two protrusions 10231, the pulley 1041 just falls to the ground, reducing the floating and shaking. Since the installation interval of the pulley 1041 along the strip-shaped groove 1023 is a multiple of the arrangement interval of the protrusions 10231, when there are multiple pulleys 1041, the multiple pulleys 1041 can always fall into the middle of two adjacent protrusions 10231, so that the protrusions 10231 can effectively block the sliding of the pulleys 1041.

[0059] It can be understood that the equality in the present application can have a certain error range. For example, in order to fit the machining error of the pulley 1041 and the protrusion 10231 and reduce the possibility of interference, the distance between the protrusions 10231 and the diameter of the pulley 1041 can be appropriately adjusted. The adjusted scheme can still be considered as equal.

[0060] If the inclination angle of the offshore platform 20 during construction and transportation is too large, the performance and safety of the electrical equipment inside the platform will be affected.

[0061] Therefore, in another embodiment of the present application, as shown in Figure 7As shown, the installation ship 10 can also include a protective cover 105 and a protective net 106, the top of the protective cover 105 is provided with a first rope winding machine 1051 and a first adjusting rope 1052 at each corner, and the protective cover 105 is installed on the top of the offshore platform 20.

[0062] The protective net 106 can be installed between the protective cover 105 and the active deck 1021, or between the protective cover 105 and the passive deck 1022. The four first rope winding machines 1051 are respectively installed at the four corners of the deck 102, and one end of the first adjusting rope 1052 is fixed to the protective cover 105, and the other end of the first adjusting rope 1052 is wound into the first rope winding machine 1051.

[0063] Through the above scheme, the first rope winding machine 1051 and the first adjusting rope 1052 are installed at any corner of the protective cover 105, the first adjusting rope 1052 can be controlled in length by the first rope winding machine 1051 winding and unwinding the first adjusting rope 1052, and since there are four corners with first adjusting ropes 1052 that can adjust the length, when the offshore platform 20 is rocking, the length of the first adjusting rope 1052 at one or more corners can be adjusted to adjust the inclination of the protective cover 105 and the offshore platform 20, so as to maintain the balance of the offshore platform 20 and reduce the damage to the offshore platform 20.

[0064] At the same time, since the side surface is also provided with the protective net 106, the sliding of the offshore platform 20 can be reduced to a certain extent, and the protection ability of the installation ship 10 can be enhanced.

[0065] On this basis, in combination with Figure 7 and Figure 8 In an embodiment, the top of the protective cover 105 can be provided with an infrared signal transmitter 1053, an infrared signal receiver 1054, a transmitter support 1055, and a shock-absorbing weight 1056 at each corner.

[0066] The transmitter support 1055 is fixed to the protective cover 105, the upper end of the infrared transmitter is rotatably connected to the transmitter support 1055, the shock-absorbing weight 1056 is fixed to the lower end of the infrared transmitter, the infrared signal transmitter 1053 is used to emit an infrared signal 10531 to another corner, and the infrared signal receiver 1054 is used to detect whether there is an infrared signal 10531 in another corner.

[0067] Due to the effect of the shock-absorbing weight 1056, the downward gravity received by the infrared signal transmitter 1053 is always greater than the force received in other directions, so it can maintain a certain horizontal state in the rocking, for reference Figure 9When the shaking exceeds a certain angle, the top surface of the protective cover 105 (i.e. the mounting surface of the infrared signal transmitter 1053, the infrared signal receiver 1054 and the transmitter support 1055) is no longer horizontal, thus the infrared signal receiver 1054 cannot receive the infrared signal 10531 emitted by the infrared signal transmitter 1053, and it can be determined that the offshore platform 20 is tilted, and the corresponding first rope winding machine 1051 can be controlled to wind or unwind the corresponding first adjusting rope 1052, so as to adjust the tilt and reduce the damage to the offshore platform 20.

[0068] In another embodiment, as shown in Figure 7 , the bow 101 is provided with an infrared positioning device 1011, an air cushion 1012 and an inflator 1013; the inflator 1013 is used to inflate the air cushion 1012 when the infrared positioning device 1011 detects that the installation ship 10 reaches the offshore foundation 30, so that the air cushion 1012 can buffer the collision between the bow 101 and the offshore foundation 30.

[0069] Correspondingly, as shown in Figure 10 , the present application also provides an installation equipment 1 of an offshore platform 20, which comprises the installation ship 10 of any of the above embodiments, and further comprises the offshore platform 20 and the offshore foundation 30, wherein the offshore foundation 30 comprises a cylindrical single-column platform 301, the lower part of the cylindrical single-column platform 301 is fixed in the seabed 2, and the upper part of the cylindrical single-column platform 301 is provided with a connecting platform 3011 extending above the sea surface 3. The installation ship 10 is used to transport the offshore platform 20 to the connecting platform 3011, and the connecting platform 3011 is used to bear and fix the offshore platform 20.

[0070] Through the above scheme, the connecting platform 3011 extending above the sea surface 3 provides a device that can be used in cooperation with the installation ship 10.

[0071] It can be understood that the embodiment schemes of the installation ship 10 of the present application and the beneficial effects thereof can be applied to the installation equipment 1 and the installation method of the present application.

[0072] In an embodiment of the present application, as shown in Figure 11 and Figure 12 , the offshore platform 20 can comprise a plurality of pile legs 201, each of which is provided with three second rope winding machines 2011 and three second adjusting ropes 2012, and the connecting platform 3011 comprises a plurality of bearing columns 30111 corresponding to the pile legs 201 one by one; the pile leg 201 is cylindrical, the three second rope winding machines 2011 are uniformly installed on the pile leg 201 in the circumferential direction, one end of the second adjusting rope 2012 is connected with the bearing column 30111, and the other end of the second adjusting rope 2012 is wound into the second rope winding machine 2011.

[0073] Through the above scheme, the three second rope winding machines 2011 and the three second adjusting ropes 2012 in the circumferential direction are used, so that the tightening force can be uniformly applied to the pile leg 201 of the offshore platform 20 and the bearing column 30111 connected to the connecting platform 3011, and then the pile leg 201 is aligned with the bearing column 30111, facilitating the later connection and fixation.

[0074] Further, in another embodiment, as shown in Figure 11 and Figure 12 , the alignment and installation can also be realized by the second rope winding machine 2011 in sequence, and the scheme is as follows:

[0075] The connecting platform 3011 further includes a plurality of hollow sleeves 30112 corresponding to the bearing columns 30111 one by one, the hole diameter of the hollow sleeve 30112 is equal to the diameter of the pile leg 201, the hollow sleeve 30112 is telescopically connected with the bearing column 30111, the bearing column 30111 is provided with three first iron rings 30113, the hollow sleeve 30112 is provided with three second iron rings 30114, and the bearing column 30111 is connected with the second adjusting rope 2012 through the first iron ring 30113 or the second iron ring 30114.

[0076] Through the above scheme, the movable hollow sleeve 30112 is added to the bearing column 30111, and the two sections (the hollow sleeve 30112 and the bearing column 30111) are each provided with three iron rings as the fixing points of the second adjusting rope 2012, so that the rough alignment is first adjusted (the bearing column 30111 is connected with the second adjusting rope 2012 through the first iron ring 30113), and then the hollow sleeve 30112 is pulled out of the bearing column 30111 for fine adjustment, so as to pull the pile leg 201 into the hollow sleeve 30112 (the bearing column 30111 is connected with the second adjusting rope 2012 through the second iron ring 30114), thereby realizing the quick and stable connection.

[0077] Further, in an embodiment, a hole site can be correspondingly provided on the pile leg 201 and the hollow sleeve 30112, and a high-strength bolt 30115 is used to connect the hollow sleeve 30112 and the pile leg 201, so as to complete the connection. Figure 13

[0078] On the basis of the above scheme, as shown in Figure 14 , the cylindrical single-column platform 301 further includes a fixed end 3012, a movable end 3013 and an elevator 3014, the fixed end 3012 is fixedly connected with the seabed 2, the movable end 3013 is fixedly connected with the connecting platform 3011, and the movable end 3013 and the fixed end 3012 are respectively connected with two ends of the elevator 3014.

[0079] Correspondingly, the application also provides an installation method of an offshore platform 20, which is applied to the installation device 1 provided in the second aspect of the application, and reference can be made to the description of the installation device 1.​Figure 15 , in combination Figure 3 , the installation method can comprise:

[0080] S101, according to the size of the offshore platform 20, the number of active decks 1021 and passive decks 1022 is determined.

[0081] S102, control the telescopic motor 10212 to drive the locking rod 10211 to extend from the side of the active deck 1021, the radial protrusion 10214 extends into the locking groove 10221.

[0082] S103, control the rotary motor 10213 to drive the radial protrusion 10214 to rotate in the locking groove 10221, so that the radial protrusion 10214 abuts against the inner side of the baffle 10222, so that the active deck 1021 and the passive deck 1022 are fixedly connected as the deck 102.

[0083] S104, place the offshore platform 20 on the deck 102.

[0084] S105, connect the bow 101 and the deck 102, and transport the offshore platform 20 to the connecting platform 3011 through the bow 101.

[0085] S106, fix the offshore platform 20 on the connecting platform 3011.

[0086] Through the above scheme, the rotary motor 10213 and the telescopic motor 10212 are comprehensively controlled, and the deck 102 is successfully assembled.

[0087] It can be understood that the instruction for controlling the motor rotation can be realized by manually triggering the power switch, or realized by controlling the corresponding motor driver through the single-chip microcomputer, which is determined according to the actual project demand.

[0088] If a controller (such as a single-chip microcomputer or a PLC) is used as the signal source for connecting the deck 102, the controller can be installed on any active deck 1021. The controller can also be independent of the deck 102, or even independent of the installation ship 10, and only connected when the deck 102 is assembled or disassembled, and disconnected from the deck 102 after the assembly or disassembly is completed.

[0089] The motor and transmission structure shown in the figure are not used to limit the present application, and other forms of transmission structure can also be selected by those skilled in the art under the inspiration of the present application, such as belt transmission, screw transmission, etc., which falls within the protection scope of the present application.

[0090] On the basis of the above scheme, in an embodiment, as shown in Figure 16 , in combination with the present application Figure 11 and Figure 12S106, fixing the offshore platform 20 on the connecting platform 3011 can specifically include:

[0091] S201, controlling each second rope winding machine 2011 to release the second adjusting rope 2012.

[0092] S202, fixing the second adjusting rope 2012 on the bearing column 30111.

[0093] S203, controlling each second rope winding machine 2011 to tighten the second adjusting rope 2012, so that the pile leg 201 cooperates with the corresponding bearing column 30111.

[0094] In an embodiment, as shown in Figure 17 S202, fixing the second adjusting rope 2012 on the bearing column 30111, and S203, controlling each second rope winding machine 2011 to tighten the second adjusting rope 2012, so that the pile leg 201 cooperates with the corresponding bearing column 30111, can include:

[0095] S301, fixing the second adjusting rope 2012 on the first iron ring 30113.

[0096] S302, controlling each second rope winding machine 2011 to tighten the second adjusting rope 2012, so that the pile leg 201 is aligned with the hollow sleeve 30112.

[0097] S303, releasing the second adjusting rope 2012, and fixing the second adjusting rope 2012 on the second iron ring 30114.

[0098] S304, controlling each second rope winding machine 2011 to tighten the second adjusting rope 2012, and pulling the hollow sleeve 30112 out of the bearing column 30111, so that the pile leg 201 extends into the hollow sleeve 30112.

[0099] Through two tightenings, the hollow sleeve 30112 is finally pulled out to be sleeved on the pile leg 201, the fine butt joint is realized, and the fixing and connecting of the offshore platform 20 and the connecting platform 3011 is completed.

[0100] In another embodiment, in S105, transporting the offshore platform 20 to the connecting platform 3011 by the bow 101 can include: controlling the infrared signal transmitter 1053 to emit an infrared signal 10531 to another corner; when it is detected that the infrared receiver does not receive the infrared signal 10531 from the other corner, controlling the first rope winding machine 1051 to tighten or loosen the first adjusting rope 1052 until the infrared receiver receives the infrared signal 10531 from the other corner.

[0101] In another embodiment, the S105, the connecting bow 101 and the deck 102, after the offshore platform 20 is transported to the connecting platform 3011 through the bow 101, the installation method further comprises: according to the position information fed back by the infrared positioning device 1011, when the distance between the bow 101 and the offshore foundation 30 is less than a preset value, the air compressor 1013 is controlled to inflate the air cushion 1012.

[0102] In summary, the embodiment of the present application provides an installation ship 10, an installation device 1 and an installation method of an offshore platform 20. Compared with the prior art, the deck 102 can be freely disassembled and combined. Through the telescopic and rotatable structure, the active deck 1021 and the passive deck 1022 can be locked or unlocked, and different sizes of the deck 102 can be obtained by combination, without the need to replace other size transport ships, and the requirements for transporting offshore platforms 20 of different sizes can be met.

[0103] The above is only the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, which should also be considered as the protection scope of the present application.

Claims

1. An installation vessel for offshore platforms, characterized in that The installation ship (10) for transporting a marine platform (20) to a marine foundation (30) includes a bow (101) and a deck (102), and the bow (101) drags the deck (102) through a tow rope (103); The deck (102) includes the same number of active decks (1021) and passive decks (1022), and the width of the deck (102) is less than the spacing of the legs (201) of the marine platform (20); At least one side of the active deck (1021) is provided with a rotary telescopic mechanism, and the rotary telescopic mechanism includes a locking rod (10211), a telescopic motor (10212), and a rotary motor (10213). The end of the locking rod (10211) is provided with a radial protrusion (10214). The telescopic motor (10212) is fixed in the active deck (1021), and the telescopic motor (10212) is in transmission connection with the locking rod (10211). The rotary motor (10213) is fixed on the locking rod (10211), and the rotary motor (10213) is in transmission connection with the radial protrusion (10214); At least one side of the passive deck (1022) is provided with a locking groove (10221), and the locking groove (10221) is provided with a baffle (10222) at the slot opening; The telescopic motor (10212) drives the locking rod (10211) to extend from the side of the active deck (1021), the radial protrusion (10214) extends into the locking groove (10221), the rotary motor (10213) drives the radial protrusion (10214) to rotate in the locking groove (10221), and the radial protrusion (10214) is in abutment with the inner side of the baffle (10222), so as to limit the relative movement of the active deck (1021) and the passive deck (1022) along the axial direction of the locking rod (10211).

2. The installation vessel of claim 1, wherein, The installation ship (10) further includes a plurality of installation rails (104), each of the installation rails (104) is provided with a pulley (1041), and the plurality of installation rails (104) are used for carrying the marine platform (20). A strip-shaped groove (1023) is formed in the upper portion of the deck (102), and the strip-shaped groove (1023) is used for placing the pulley (1041).

3. The installation vessel of claim 2, wherein, A plurality of protrusions (10231) are uniformly arranged in the strip-shaped groove (1023), the spacing between two adjacent protrusions (10231) is equal to the diameter of the pulley (1041), and the installation spacing of the pulley (1041) along the strip-shaped groove (1023) is a multiple of the arrangement spacing of the protrusions (10231).

4. The installation vessel of claim 1, wherein, The installation ship (10) further includes a protective cover (105) and a protective net (106). First rope winding machines (1051) and first adjusting ropes (1052) are arranged at the four corners of the top of the protective cover (105); The protective cover (105) is installed on the top of the marine platform (20); The protective net (106) is installed between the protective cover (105) and the active deck (1021), or the protective net (106) is installed between the protective cover (105) and the passive deck (1022); Four first rope winding machines (1051) are respectively installed at four corners of the deck (102), one end of the first adjusting rope (1052) is fixed on the protective cover (105), and the other end of the first adjusting rope (1052) is wound into the first rope winding machine (1051).

5. The installation vessel of claim 4, wherein, An infrared signal transmitter (1053), an infrared signal receiver (1054), a transmitter support (1055) and a shock-absorbing weight (1056) are respectively installed at four corners of the top of the protective cover (105); The transmitter support (1055) is fixed on the protective cover (105), the upper end of the infrared signal transmitter (1053) is rotatably connected with the transmitter support (1055), the shock-absorbing weight (1056) is fixed on the lower end of the infrared signal transmitter (1053), the infrared signal transmitter (1053) is used for transmitting an infrared signal (10531) to another corner, and the infrared signal receiver (1054) is used for detecting whether there is an infrared signal (10531) in another corner.

6. The installation vessel of claim 1, wherein, An infrared positioning device (1011), an air cushion (1012) and an inflator (1013) are installed on the bow (101); The inflator (1013) is used for inflating the air cushion (1012) when the infrared positioning device (1011) detects that the installation ship (10) reaches the offshore foundation (30), so that the air cushion (1012) can buffer the collision between the bow (101) and the offshore foundation (30).

7. An installation apparatus for an offshore platform, characterized in that The installation equipment (1) comprises: An offshore platform (20); An offshore foundation (30), the offshore foundation (30) comprises a cylindrical single-column platform (301), the lower part of the cylindrical single-column platform (301) is fixed in a seabed (2), and the upper part of the cylindrical single-column platform (301) is provided with a connection platform (3011) extending out of a sea surface (3); The installation ship (10) according to any one of claims 1 to 6; the installation ship (10) is used for transporting the offshore platform (20) to the connection platform (3011), and the connection platform (3011) is used for bearing and fixing the offshore platform (20).

8. The mounting apparatus of claim 7, wherein, The offshore platform (20) comprises a plurality of pile legs (201), three second rope winding machines (2011) and three second adjusting ropes (2012) are respectively arranged on each of the plurality of pile legs (201), and the connection platform (3011) comprises a plurality of bearing columns (30111) corresponding to the plurality of pile legs (201); The pile leg (201) is cylindrical, three second rope winding machines (2011) are evenly installed on the pile leg (201) in the circumferential direction, one end of the second adjusting rope (2012) is connected with the bearing column (30111), and the other end of the second adjusting rope (2012) is wound into the second rope winding machine (2011).

9. The mounting apparatus of claim 8, wherein, The connecting platform (3011) further comprises a plurality of hollow sleeves (30112) corresponding to the bearing columns (30111), the hole diameter of the hollow sleeves (30112) is equal to the diameter of the pile leg (201), the hollow sleeves (30112) are telescopically connected with the bearing columns (30111), three first iron rings (30113) are arranged on the bearing columns (30111), three second iron rings (30114) are arranged on the hollow sleeves (30112), and the bearing columns (30111) are connected with the second adjusting ropes (2012) through the first iron rings (30113) or the second iron rings (30114).

10. The mounting apparatus of claim 9, wherein, The barrel type single column platform (301) comprises a fixed end (3012), a movable end (3013) and an elevator (3014), the fixed end (3012) is fixedly connected with the seabed (2), the movable end (3013) is fixedly connected with the connecting platform (3011), and the movable end (3013) and the fixed end (3012) are respectively connected with two ends of the elevator (3014).

11. A method of installing an offshore platform using the installation apparatus (1) according to any one of claims 7-10, characterized in that, The installation method comprises: According to the size of the offshore platform (20), the number of the active deck (1021) and the passive deck (1022) is determined; The telescopic motor (10212) is controlled to drive the locking rod (10211) to extend from the side of the active deck (1021), and the radial protrusion (10214) extends into the locking groove (10221); The rotary motor (10213) is controlled to drive the radial protrusion (10214) to rotate in the locking groove (10221), so that the radial protrusion (10214) abuts against the inner side of the baffle (10222), so that the active deck (1021) and the passive deck (1022) are fixedly connected as a deck (102); The offshore platform (20) is placed on the deck (102); The bow (101) and the deck (102) are connected, and the offshore platform (20) is transported to the connecting platform (3011) through the bow (101); The offshore platform (20) is fixed on the connecting platform (3011).

12. The method of installing of claim 11, wherein, The offshore platform (20) is fixed on the connecting platform (3011) comprises: The second adjusting rope (2012) is fixed on the bearing column (30111); The second adjusting rope (2012) is fixed on the bearing column (30111); The second adjusting rope (2012) is fixed on the bearing column (30111).

13. The method of installing of claim 12, wherein, The second adjusting rope (2012) is fixed on the bearing column (30111), and the second adjusting rope (2012) is controlled to be tightened by each second rope winding machine (2011), so that the pile leg (201) is matched with the corresponding bearing column (30111), comprising: The second adjusting rope (2012) is fixed on the first iron ring (30113); The second adjusting rope (2012) is controlled to be tightened by each second rope winding machine (2011), so that the pile leg (201) is aligned with the hollow sleeve (30112); The second adjusting rope (2012) is released, and the second adjusting rope (2012) is fixed on the second iron ring (30114); The second adjusting rope (2012) is controlled to be tightened by each second rope winding machine (2011), so that the hollow sleeve (30112) is pulled out of the bearing column (30111), so that the pile leg (201) is inserted into the hollow sleeve (30112).

14. The method of installing of claim 11, wherein, The offshore platform (20) is transported to the connecting platform (3011) by the bow (101), comprising: The infrared signal transmitter (1053) is controlled to emit infrared signals (10531) to another corner; When it is detected that the infrared receiver does not receive the infrared signal (10531) from the other corner, the first adjusting rope (1052) is controlled to be tightened or loosened by the first rope winding machine (1051) until the infrared receiver receives the infrared signal (10531) from the other corner.

15. The method of installing of claim 11, wherein, After the offshore platform (20) is transported to the connecting platform (3011) by the bow (101), the installation method further comprises: When the distance between the bow (101) and the offshore foundation (30) is less than a preset value according to the position information fed back by the infrared positioning device (1011), the air inflator (1013) is controlled to inflate the air cushion (1012).

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