Installation ship, installation equipment and installation method for offshore platform

Abstract

The invention relates to the technical field of offshore platform construction, and discloses an offshore platform installation ship, installation equipment and installation method.The installation ship is used for transporting an offshore platform to an offshore foundation and comprises a bow and a deck, and the bow drags the deck through a tow rope; the decks comprise the same number of active decks and passive decks, and the width of the decks is smaller than the distance between pile legs of the offshore platform. A rotary telescopic mechanism is installed on at least one side face of the active deck and comprises a locking rod, a telescopic motor and a rotary motor, a radial protrusion is arranged at the end of the locking rod, the telescopic motor is fixed in the active deck and is in transmission connection with the locking rod, and the rotary motor is fixed to the locking rod. The rotating motor is in transmission connection with the radial bulge; a locking groove is formed in at least one side face of the passive deck, and a blocking piece is arranged at a groove opening of the locking groove. The telescopic motor drives the radial protrusion to stretch into the locking groove, and the rotating motor drives the radial protrusion to rotate in the locking groove to abut against the inner side of the blocking piece.

Description

Technical Field

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

[0002] At present, with the growing global demand for renewable energy, offshore wind power is gaining attention as a clean and efficient form of energy. As the scale of offshore wind power projects expands, the requirements for construction and power transmission technology in deepwater areas increase, and the application of flexible direct current (VSC-HVDC) technology is important at this time.

[0003] At present, the installation of offshore wind power flexible DC transmission platforms mostly adopts the traditional floating and dragging method, using semi-submersible vessels for installation. However, this method has limitations. With different wind power projects, the sizes of different offshore wind power flexible DC transmission platforms (hereinafter referred to as offshore platforms) vary greatly. Purchasing and using semi-submersible vessels of different sizes will lead to increased costs, and semi-submersible vessels of different sizes are also difficult to store.

[0004] Therefore, there is a need for a transportation device and a transportation method that are capable of transporting offshore platforms of different sizes. Summary of the invention

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

[0006] In order to achieve the above-mentioned purpose, the present application provides an installation vessel, installation equipment and installation method for an offshore platform. Specifically, the present application is implemented through the following schemes:

[0007] According to a first aspect of the present application, there is provided an installation vessel for an offshore platform, which is used to transport the offshore platform to an offshore foundation. The installation vessel comprises a bow and a deck, wherein the bow drags the deck through a tow rope; the deck comprises an equal number of active decks and passive decks, and the width of the deck is less than the spacing between the pile legs of the offshore platform; a rotating telescopic mechanism is installed on at least one side of the active deck, wherein the rotating telescopic mechanism comprises a locking rod, a telescopic motor and a rotating motor, wherein a radial protrusion is provided at the end of the locking rod, the telescopic motor is fixed in the active deck, the telescopic motor is transmission-connected to the locking rod, the rotating motor is fixed on the locking rod, and the rotating motor is transmission-connected to the radial protrusion; a locking groove is provided on at least one side of the passive deck, wherein a blocking piece is provided at the notch of the locking groove; wherein 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 rotating motor drives the radial protrusion to rotate in the locking groove, so that the radial protrusion abuts against the inner side of the blocking piece, so as to limit the relative movement of the active deck and the passive deck along the axial direction of the locking rod.

[0008] In one embodiment, the installation vessel further includes a plurality of installation rails, each of which has a pulley, and the plurality of installation rails are used to support the offshore platform. A strip groove is provided above the deck, and the strip groove is used to place the pulley.

[0009] In another embodiment, a plurality of evenly arranged protrusions are provided in the strip-shaped groove, the distance between two adjacent protrusions is equal to the diameter of the pulley, and the installation distance of the pulley along the strip-shaped groove is a multiple of the arrangement distance of the protrusions.

[0010] In another embodiment, the installation vessel also includes a protective cover and a protective net; a first rope winding machine and a first adjustment rope are respectively installed at the four corners of the top of the protective cover; the protective cover is installed on the top of the offshore platform; the protective net is installed between the protective cover and the active deck, or the protective net is installed between the protective cover and the passive deck; four first rope winding machines are respectively installed at the four corners of the deck, one end of the first adjustment rope is fixed on the protective cover, and the other end of the first adjustment rope is wound into the first rope winding machine.

[0011] In one embodiment, an infrared signal transmitter, an infrared signal receiver, a transmitter bracket and a shock-absorbing weight are installed at each of the four corners of the top of the protective cover; the transmitter bracket is fixed on the protective cover, the upper end of the infrared transmitter is rotatably connected to the transmitter bracket, the shock-absorbing weight is fixed to the lower end of the infrared transmitter, the infrared signal transmitter is used to transmit infrared signals to the other corner, and the infrared signal receiver is used to detect whether there is an infrared signal in the other corner.

[0012] In another embodiment, an infrared positioning device, an air cushion and an inflator are installed on the bow; the inflator is used to inflate the air cushion when the infrared positioning device detects that the installation ship has arrived at the offshore foundation, so that the air cushion can cushion the collision between the bow and the offshore foundation.

[0013] According to a second aspect of the present application, there is provided an installation device for an offshore platform, the installation device comprising: an offshore platform; an offshore foundation, the offshore foundation comprising a cylindrical single-column platform, the lower part of the cylindrical single-column platform is fixed in the seabed, and the upper part of the cylindrical single-column platform is provided with a connecting platform extending out of the sea surface; the installation vessel provided in the first aspect of the present application; the installation vessel is used to transport the offshore platform to the connecting platform, and the connecting platform is used to carry and fix the offshore platform.

[0014] In one embodiment, the offshore platform includes a plurality of pile legs, each of which is provided with three second rope winding machines and three second adjustment ropes, and the connecting platform includes a plurality of bearing columns corresponding to the pile legs one by one; the pile legs are cylindrical, and the three second rope winding machines are evenly installed on the pile legs along the circumferential direction, one end of the second adjustment rope is connected to the bearing column, and the other end of the second adjustment rope is wound into the second rope winding machine.

[0015] In another embodiment, the connecting platform also includes a plurality of hollow sleeves corresponding one by one to the bearing columns, the aperture of the hollow sleeve is equal to the diameter of the pile leg, the hollow sleeve is telescopically connected to the bearing column, three first iron rings are provided on the bearing column, and three second iron rings are provided on the hollow sleeve, and the bearing column is connected to the second adjusting rope through the first iron ring or the second iron ring.

[0016] Based on the above scheme, the cylindrical single-column platform includes a fixed end, a movable end and a lift. 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 the two ends of the lift.

[0017] The third aspect of the present application provides an installation method for an offshore platform, which is applied to the installation equipment provided in the second aspect of the present application, and the installation method includes: 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 rotating 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, so that the active deck and the passive deck are fixedly connected to form a deck; placing the offshore platform on the deck; connecting the bow and the deck, and transporting the offshore platform to the connecting platform via the bow; fixing the offshore platform on the connecting platform.

[0018] Based on the above scheme, in one embodiment, fixing the offshore platform on the connecting platform includes: controlling each second rope winding machine to release the second adjustment rope; fixing the second adjustment rope on the bearing column; controlling each second rope winding machine to tighten the second adjustment rope so that the pile legs cooperate with the corresponding bearing columns.

[0019] In one embodiment, the second adjustment rope is fixed on the bearing column, and each second rope winding machine is controlled to tighten the second adjustment rope so that the pile leg cooperates with the corresponding bearing column, including: fixing the second adjustment rope on the first iron ring; controlling each second rope winding machine to tighten the second adjustment rope so that the pile leg is aligned with the hollow sleeve; releasing the second adjustment rope and fixing the second adjustment rope on the second iron ring; controlling each second rope winding machine to tighten the second adjustment rope and pull the hollow sleeve out of the bearing column so that the pile leg extends into the hollow sleeve.

[0020] In another embodiment, transporting the offshore platform to the connection platform via the bow includes: controlling the infrared signal transmitter to transmit an infrared signal to another corner; when detecting that the infrared receiver does not receive the infrared signal from another corner, controlling the first rope winding machine to tighten or loosen the first adjustment rope until the infrared receiver receives the infrared signal from another corner.

[0021] In another embodiment, after transporting the offshore platform to the connection platform via the bow, the installation method further includes: when it is determined that the distance between the bow and the offshore foundation is less than a preset value based on 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 installation vessel, installation equipment and installation method of an offshore platform in the embodiment of the present application have the following beneficial effects: the installation vessel in the embodiment of the present application provides a deck that can be freely disassembled and assembled, and through a telescopic and rotatable structure, the active deck and the passive deck can be locked or unlocked to obtain decks of different sizes in combination without replacing transport ships of other sizes, and can meet the requirements of transporting offshore platforms of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an installation vessel for an offshore platform exemplarily shown in an embodiment of the present application.

[0024] Figure 2 It is a schematic structural diagram of an active deck of an installation vessel exemplarily shown in an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of assembling a deck of an installation vessel exemplarily shown in an embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of assembly of a deck and a mounting rail exemplarily shown in an embodiment of the present application.

[0027] Figure 5 It is a schematic diagram of the structure of a protrusion for fixing a mounting rail exemplarily shown in an embodiment of the present application.

[0028] Figure 6 It is a cross-sectional schematic diagram of a deck with protrusions exemplarily shown in an embodiment of the present application.

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

[0030] Figure 8 It is a schematic diagram of the structure of an infrared transmitter exemplarily shown in an embodiment of the present application.

[0031] Fig. 9 It is a schematic diagram of the operation of an infrared transmitter exemplarily shown in an embodiment of the present application.

[0032] Fig.10 It is a schematic structural diagram of a cylindrical single-column platform exemplarily shown in an embodiment of the present application.

[0033] Fig.11 It is a schematic diagram of a connection structure between a connection platform and an offshore platform exemplarily shown in an embodiment of the present application.

[0034] Fig.12It is a schematic diagram of another connection structure between a connection platform and an offshore platform exemplarily shown in an embodiment of the present application.

[0035] Fig.13 It is a schematic structural diagram of a connection platform with a hollow sleeve exemplarily shown in an embodiment of the present application.

[0036] Fig.14 It is a structural schematic diagram of a connecting platform with a lifting structure exemplarily shown in an embodiment of the present application.

[0037] Fig.15 It is a flow chart of an offshore platform installation method exemplarily shown in an embodiment of the present application.

[0038] Fig.16 It is a flow chart of another offshore platform installation method exemplarily shown in an embodiment of the present application.

[0039] Fig.17 It is a flow chart of another offshore platform installation method exemplarily shown in an embodiment of the present application.

[0040] Reference numerals:

[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. Rotating motor, 10214. Radial protrusion, 10221. Locking groove, 10222. Baffle, 1023. Strip groove, 10231. Protrusion, 103. Tow rope, 104. Installation track, 1041. Pulley, 105. Protective cover, 106. Protective net, 1051. First rope winding machine, 1052. First adjustment Rope, 1053, infrared signal transmitter, 10531, infrared signal, 1054, infrared signal receiver, 1055, transmitter bracket, 1056, shock-absorbing weight, 20, offshore platform, 201, pile leg, 2011, second rope winder, 2012, second adjustment rope, 30, offshore foundation, 301, cylindrical single-column platform, 3011, connecting 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 implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0043] In the description of this application, it should be understood that the term "offshore platform" is used in this application to refer to, including but not limited to, offshore wind power flexible DC transmission platforms, and can also be applied to any other offshore platform that can be transported by floating and dragging, such as offshore oil platforms, large offshore liquefied natural gas (LNG) production platforms, large offshore integrated fishery breeding platforms, etc. Solutions applied to different offshore platforms also fall within the scope of protection of this application.

[0044] As the global demand for renewable energy continues to grow, offshore wind power has gradually gained attention as a clean and efficient form of energy. The scale of offshore wind power projects is increasing, especially in deep water areas far from land, and the technical requirements for construction and transmission of electric energy are also increasing. In this context, the application of flexible direct current (VSC-HVDC) technology is particularly important.

[0045] Before the existing offshore platforms are put into use, they need to be transported to designated locations for assembly. Due to different performance parameters, the sizes of offshore platforms of different models may vary greatly. It is obviously costly to use different transportation tools to transport different offshore platforms, and multiple transportation tools are difficult to store when not in use.

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

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, a preferred embodiment of an embodiment of the present application is an installation vessel 10 of an offshore platform 20, which is used to transport the offshore platform 20 to an offshore foundation 30. The installation vessel 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 between the pile legs 201 of the offshore platform 20.

[0048] A rotating telescopic mechanism is installed on at least one side of the active deck 1021, and the rotating telescopic mechanism includes a locking rod 10211, a telescopic motor 10212 and a rotating motor 10213. A radial protrusion 10214 is provided at the end of the locking rod 10211. The telescopic motor 10212 is fixed in the active deck 1021, and the telescopic motor 10212 is transmission-connected to the locking rod 10211. The rotating motor 10213 is fixed on the locking rod 10211, and the rotating motor 10213 is transmission-connected to the radial protrusion 10214. A locking groove 10221 is provided on at least one side of the passive deck 1022, and a blocking piece 10222 is provided at the notch of the locking groove 10221.

[0049] Among them, the telescopic motor 10212 drives 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 rotating motor 10213 drives the radial protrusion 10214 to rotate in the locking groove 10221, and the locking rod 10211 rotates until the radial protrusion 10214 contacts the inner side of the baffle 1022 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 solution, the locking rod 10211 is driven by the motor with the functions of telescoping and rotating. Since the radial protrusion 10214 of the locking rod 10211 and the blocking piece 10222 of the locking groove 10221 form a matching interlocking structure, such as Figure 3 For example, after the locking rod 10211 of the active deck 1021 penetrates into the locking groove 10221 of the passive deck 1022, the radial protrusion 10214 can be rotated 90 degrees to make the blocking piece 1022 collide with the locking rod 10211 to prevent the locking rod 10211 from coming out. At the same time, the depth of the locking groove 10221 itself can limit the locking rod 10211 from further extending, thereby achieving a fixed connection between the active deck 1021 and the passive deck 1022. Therefore, when a larger offshore platform 20 needs to be transported, the number of active decks 1021 and passive decks 1022 can be increased, and when a smaller offshore platform 20 needs to be transported, the number of active decks 1021 and passive decks 1022 can be appropriately reduced.

[0051] Therefore, a deck 102 with a variable size is realized. Since the deck 102 has a variable size, there is no need to change the transport equipment when transporting goods of different sizes, and it is competent for transporting offshore platforms 20 of different sizes. And the single-body design allows for separate storage during storage, reducing the space occupied during storage.

[0052] The active deck 1021 and the passive deck 1022 in the present application can be provided with locking rods 10211 and locking grooves 10221 structures on multiple sides to achieve a variety of combinations, and the present application does not limit this. Figure 1 In the example, locking rods 10211 and locking grooves 10221 are provided on two sides to realize the assembly of two active decks 1021 and two passive decks 1022.

[0053] It is understandable that the support rope can be any rope that can meet the mechanical performance requirements, such as steel wire rope, synthetic fiber rope, polyester fiber rope (PET), nylon fiber rope, ultra-high-strength polyethylene rope (UHMWPE), etc.

[0054] For example, a polyester fiber rope can be used as the material of the supporting rope. The polyester fiber rope has high strength and can withstand large tension. It is light in weight and is more convenient to operate than a steel wire rope. It has greater buoyancy in water and is difficult to sink.

[0055] In one embodiment of the present application, Figure 4 As shown, the installation vessel 10 may further include a plurality of installation rails 104 , each of which has a pulley 1041 . The plurality of installation rails 104 are used to support the offshore platform 20 . A strip groove 1023 is provided above the deck 102 , and the strip groove 1023 is used to place the pulley 1041 .

[0056] Through the strip groove, it can be placed on the pulley 1041 and then on the mounting track 104. The offshore platform 20 can be slidably assembled through the mounting track 104. Combined with the traditional lifting method, it can provide more abundant assembly means to cope with various offshore platforms 20.

[0057] On this basis, if Figure 5 and Figure 6 As shown, in one embodiment of the present application, a plurality of evenly arranged protrusions 10231 are provided in the strip 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 groove 1023 is a multiple of the arrangement spacing of the protrusions 10231 .

[0058] The spacing between the protrusions 10231 is equal to the diameter of the pulley 1041, so that when the pulley 1041 is inserted into the middle of two protrusions 10231, the pulley 1041 can just land on the ground, reducing the flying and shaking. Since the installation spacing of the pulley 1041 along the strip groove 1023 is a multiple of the arrangement spacing 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 prevent the pulley 1041 from sliding.

[0059] It is understandable that the equality in the present application may have a certain error range. For example, in order to match the processing errors of the pulley 1041 and the protrusion 10231 and reduce the possibility of interference, the spacing of the protrusion 10231 and the diameter of the pulley 1041 can be appropriately adjusted, and the adjusted solutions can still be considered equal.

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

[0061] Therefore, in another embodiment of the present application, Figure 7As shown, the installation vessel 10 may further include a protective cover 105 and a protective net 106 . A first rope winding machine 1051 and a first adjusting rope 1052 are respectively installed at the four corners of the top of the protective cover 105 . The protective cover 105 is installed on the top of the offshore platform 20 .

[0062] The protection net 106 can be installed between the protection cover 105 and the active deck 1021, or between the protection cover 105 and the passive deck 1022. Four first rope reels 1051 are respectively installed at the four corners of the deck 102, one end of the first adjustment rope 1052 is fixed on the protection cover 105, and the other end of the first adjustment rope 1052 is rolled into the first rope reel 1051.

[0063] Through the above scheme, a first rope winding machine 1051 and a first adjustment rope 1052 are installed at any corner of the protective cover 105. The first rope winding machine 1051 can control the length of the first adjustment rope 1052 by retracting and releasing the first adjustment rope 1052. Since there are first adjustment ropes 1052 with adjustable lengths at four angles, when the sea is bumpy, the length of the first adjustment rope 1052 at one or more corners can be adjusted to thereby adjust the inclination angle of the protective cover 105 and the offshore platform 20, so as to maintain the balance of the offshore platform 20 and reduce damage to the offshore platform 20.

[0064] At the same time, since a protective net 106 is also installed on the side, the slippage of the offshore platform 20 can be reduced to a certain extent, thereby enhancing the protection capability of the installation vessel 10.

[0065] On this basis, combined with Figure 7 and Figure 8 In one embodiment, the four corners of the top of the protective cover 105 can be respectively installed with an infrared signal transmitter 1053, an infrared signal receiver 1054, a transmitter bracket 1055 and a shock-absorbing weight 1056.

[0066] Among them, the transmitter bracket 1055 is fixed on the protective cover 105, the upper end of the infrared transmitter is rotatably connected to the transmitter bracket 1055, the shock-absorbing weight 1056 is fixed to the lower end of the infrared transmitter, the infrared signal transmitter 1053 is used to transmit an infrared signal 10531 to the other corner, and the infrared signal receiver 1054 is used to detect whether there is an infrared signal 10531 in the other corner.

[0067] Due to the effect of the shock-absorbing weight 1056, the downward gravity on the infrared signal transmitter 1053 is always greater than the force on it in other directions, so it can maintain a certain horizontal state during shaking. Fig. 9When the shaking exceeds a certain angle, the top surface of the protective cover 105 (i.e., the installation surface of the infrared signal transmitter 1053, the infrared signal receiver 1054, and the transmitter bracket 1055) is no longer horizontal, so the infrared signal receiver 1054 cannot receive the infrared signal 10531 emitted by the infrared signal transmitter 1053. Therefore, it can be determined that the offshore platform 20 is tilted, and then the corresponding first rope winding machine 1051 can be controlled to retract and release the corresponding first adjustment rope 1052, so as to adjust the tilt and reduce damage to the offshore platform 20.

[0068] In another embodiment, Figure 7 As shown, an infrared positioning device 1011, an air cushion 1012 and an inflator 1013 are installed on the bow 101; the inflator 1013 is used to inflate the air cushion 1012 when the infrared positioning device 1011 detects that the installation vessel 10 arrives at 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, such as Fig.10 As shown, the present application also provides an installation device 1 for an offshore platform 20, including an installation vessel 10 of any of the above embodiments, the installation device 1 also includes an offshore platform 20 and an offshore foundation 30, the offshore foundation 30 includes 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 out of the sea surface 3. The installation vessel 10 is used to transport the offshore platform 20 to the connecting platform 3011, and the connecting platform 3011 is used to carry and fix the offshore platform 20.

[0070] Through the above solution, the connection platform 3011 extending out from the sea surface 3 provides a device that can be used in conjunction with the installation vessel 10.

[0071] It can be understood that the embodiment scheme of the installation vessel 10 of the present application and its beneficial effects can be applied to the installation device 1 and the installation method of the present application.

[0072] In one embodiment of the present application, Fig.11 and Fig.12 As shown, the offshore platform 20 may include a plurality of pile legs 201, on which are respectively provided three second rope winding machines 2011 and three second adjustment ropes 2012, and the connecting platform 3011 includes a plurality of bearing columns 30111 corresponding one to one with the pile legs 201; the pile legs 201 are cylindrical, and the three second rope winding machines 2011 are evenly installed on the pile legs 201 along the circumferential direction, one end of the second adjustment rope 2012 is connected to the bearing column 30111, and the other end of the second adjustment rope 2012 is wound into the second rope winding machine 2011.

[0073] Through the above scheme, by using three second rope winding machines 2011 and three second adjustment ropes 2012 in the circumferential direction, the tightening force can be evenly applied to the pile legs 201 of the offshore platform 20 and the bearing columns 30111 of the connecting platform 3011, thereby aligning the pile legs 201 with the bearing columns 30111, which is convenient for subsequent connection and fixation.

[0074] Furthermore, in another embodiment, if Fig.11 and Fig.12 As shown, the alignment and installation can also be achieved in sequence through the second rope winding machine 2011, and the scheme is as follows:

[0075] The connecting platform 3011 also includes a plurality of hollow sleeves 30112 corresponding one to one with the bearing columns 30111. The aperture of the hollow sleeve 30112 is equal to the diameter of the pile leg 201. The hollow sleeve 30112 is telescopically connected to 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. The bearing column 30111 is connected to the second adjustment rope 2012 via the first iron ring 30113 or the second iron ring 30114.

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

[0077] Furthermore, in one embodiment, corresponding holes can be provided on the pile leg 201 and the hollow sleeve 30112, and the hollow sleeve 30112 and the pile leg 201 are connected by high-strength bolts 30115 to complete the connection. Fig.13 shown.

[0078] On the basis of the above scheme, Fig.14 As shown, the cylindrical single-column platform 301 also includes a fixed end 3012, a movable end 3013 and a lift 3014, the fixed end 3012 is fixedly connected to the seabed 2, the movable end 3013 is fixedly connected to the connecting platform 3011, and the movable end 3013 and the fixed end 3012 are respectively connected to the two ends of the lift 3014.

[0079] Accordingly, the present application also provides an installation method for an offshore platform 20, which is applied to the installation device 1 provided in the second aspect of the present application, referring to Fig.15 , combined with Figure 3 , installation methods can include:

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

[0081] S102 , control the telescopic motor 10212 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 .

[0082] S103 , control the rotating 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 blocking piece 1022 , so that the active deck 1021 and the passive deck 1022 are fixedly connected to form the deck 102 .

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

[0084] S105 , connecting the bow 101 and the deck 102 , and transporting the offshore platform 20 to the connecting platform 3011 via the bow 101 .

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

[0086] Through the above scheme, the electric rotating motor 10213 and the telescopic motor 10212 are comprehensively controlled to successfully assemble the deck 102.

[0087] It is understandable that the command to control the rotation of the motor can be achieved by manually triggering the power switch, or by controlling the corresponding motor driver through a single-chip microcomputer, depending on the actual project requirements.

[0088] If a controller (such as a single chip microcomputer or a PLC) is used as a 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 vessel 10, and is only connected when assembling or disassembling the deck 102, and is physically and electrically disconnected from the deck 102 after the assembly or disassembly is completed.

[0089] The exemplary motor and transmission structure in the figure are not used to limit the present application. Inspired by the present application, those skilled in the art may also choose other forms of transmission structures, such as belt drive, screw drive, etc., which fall within the protection scope of the present application.

[0090] Based on the above solution, in one embodiment, Fig.16 As shown, combined with this application Fig.11 and Fig.12S106, fixing the offshore platform 20 on the connecting platform 3011 may specifically include:

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

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

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

[0094] In one embodiment, if Fig.17 As shown, S202, fixing the second adjustment rope 2012 on the bearing column 30111, and S203, controlling each second rope winding machine 2011 to tighten the second adjustment rope 2012, so that the pile leg 201 cooperates with the corresponding bearing column 30111, can include:

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

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

[0097] S303, release the second adjustment rope 2012, and fix the second adjustment rope 2012 on the second iron ring 30114.

[0098] S304 , controlling each second rope winding machine 2011 to tighten the second adjustment 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] After two tightenings, the hollow sleeve 30112 is finally pulled out and sleeved on the pile leg 201, achieving fine docking and completing the fixed connection between the offshore platform 20 and the connecting platform 3011.

[0100] In another embodiment, in S105, transporting the offshore platform 20 to the connection platform 3011 via the bow 101 may include: controlling the infrared signal transmitter 1053 to transmit an infrared signal 10531 to the other corner; when detecting 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 adjustment rope 1052 until the infrared receiver receives the infrared signal 10531 from the other corner.

[0101] In another embodiment, S105, after connecting the bow 101 and the deck 102 and transporting the offshore platform 20 to the connection platform 3011 via the bow 101, the installation method further includes: based on the position information fed back by the infrared positioning device 1011, when it is determined that the distance between the bow 101 and the offshore foundation 30 is less than a preset value, controlling the inflator 1013 to inflate the air cushion 1012.

[0102] In summary, the embodiment of the present application provides an installation vessel 10, installation equipment 1 and installation method for an offshore platform 20, which, compared with the prior art, provide a deck 102 that can be freely disassembled and assembled. Through a telescopic and rotatable structure, the active deck 1021 and the passive deck 1022 can be locked or unlocked to obtain decks 102 of different sizes by combination without the need to replace transport ships of other sizes, and can meet the requirements of transporting offshore platforms 20 of different sizes.

[0103] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. An installation vessel for an offshore platform, characterized in that: Used to transport an offshore platform (20) to an offshore foundation (30), the installation vessel (10) comprises a bow (101) and a deck (102), the bow (101) drags the deck (102) via a tow rope (103); The deck (102) includes an equal number of active decks (1021) and passive decks (1022), and the width of the deck (102) is smaller than the spacing between the pile legs (201) of the offshore platform (20); A rotating telescopic mechanism is installed on at least one side of the active deck (1021), and the rotating telescopic mechanism comprises a locking rod (10211), a telescopic motor (10212) and a rotating motor (10213); a radial protrusion (10214) is provided at the end of the locking rod (10211); the telescopic motor (10212) is fixed in the active deck (1021), and the telescopic motor (10212) is transmission-connected to the locking rod (10211); the rotating motor (10213) is fixed on the locking rod (10211), and the rotating motor (10213) is transmission-connected to the radial protrusion (10214); At least one side surface of the passive deck (1022) is provided with a locking groove (10221), and a blocking piece (10222) is provided at the notch of the locking groove (10221); The telescopic motor (10212) drives 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 rotating motor (10213) drives 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 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 according to claim 1, characterized in that: The installation vessel (10) further comprises a plurality of installation rails (104), each of the plurality of installation rails (104) having a pulley (1041), and the plurality of installation rails (104) are used to carry the offshore platform (20); a strip groove (1023) is provided above the deck (102), and the strip groove (1023) is used to place the pulley (1041).

3. The installation vessel according to claim 2, characterized in that: A plurality of evenly arranged protrusions (10231) are provided 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 distance of the pulley (1041) along the strip-shaped groove (1023) is a multiple of the arrangement distance of the protrusions (10231).

4. The installation vessel according to claim 1, characterized in that: The installation vessel (10) further comprises a protective cover (105) and a protective net (106); a first rope winding machine (1051) and a first adjustment rope (1052) are respectively installed at four corners of the top of the protective cover (105); The protective cover (105) is installed on the top of the offshore 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); The four first rope winding machines (1051) are respectively installed at the four corners of the deck (102), one end of the first adjustment rope (1052) is fixed on the protective cover (105), and the other end of the first adjustment rope (1052) is wound into the first rope winding machine (1051).

5. The installation vessel according to claim 4, characterized in that: An infrared signal transmitter (1053), an infrared signal receiver (1054), a transmitter bracket (1055) and a shock-absorbing weight (1056) are respectively installed at the four corners of the top of the protective cover (105); The transmitter bracket (1055) is fixed on the protective cover (105), the upper end of the infrared transmitter is rotatably connected to the transmitter bracket (1055), the shock-absorbing weight (1056) is fixed to the lower end of the infrared transmitter, the infrared signal transmitter (1053) is used to transmit 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.

6. The installation vessel according to claim 1, characterized in that: The bow (101) is equipped 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 vessel (10) has arrived at the offshore foundation (30), so that the air cushion (1012) can cushion the collision between the bow (101) and the offshore foundation (30).

7. An installation device for an offshore platform, characterized in that: The installation device (1) comprises: Offshore platforms (20); An offshore foundation (30), the offshore foundation (30) comprising a cylindrical single-column platform (301), the lower part of the cylindrical single-column platform (301) being fixed to the seabed (2), and the upper part of the cylindrical single-column platform (301) being provided with a connection platform (3011) extending out of the sea surface (3); The installation vessel (10) according to any one of claims 1 to 6; the installation vessel (10) is used to transport the offshore platform (20) to the connecting platform (3011), and the connecting platform (3011) is used to carry and fix the offshore platform (20).

8. The installation device according to claim 7, characterized in that The offshore platform (20) comprises a plurality of pile legs (201), each of the plurality of pile legs (201) being provided with three second rope winding machines (2011) and three second adjustment ropes (2012), and the connecting platform (3011) comprises a plurality of bearing columns (30111) corresponding one by one to the pile legs (201); The pile leg (201) is cylindrical, and three second rope winding machines (2011) are evenly installed on the pile leg (201) along the circumferential direction. One end of the second adjustment rope (2012) is connected to the bearing column (30111), and the other end of the second adjustment rope (2012) is wound into the second rope winding machine (2011).

9. The installation device according to claim 8, characterized in that The connecting platform (3011) further comprises a plurality of hollow sleeves (30112) corresponding one to one with the bearing columns (30111), the aperture of the hollow sleeves (30112) being equal to the diameter of the pile leg (201), the hollow sleeves (30112) being telescopically connected to the bearing columns (30111), the bearing columns (30111) being provided with three first iron rings (30113), the hollow sleeves (30112) being provided with three second iron rings (30114), and the bearing columns (30111) being connected to the second adjusting rope (2012) via the first iron rings (30113) or the second iron rings (30114).

10. The mounting device according to claim 9, characterized in that The cylindrical single-column platform (301) comprises a fixed end (3012), a movable end (3013) and a lift (3014); the fixed end (3012) is fixedly connected to the seabed (2); the movable end (3013) is fixedly connected to the connecting platform (3011); the movable end (3013) and the fixed end (3012) are respectively connected to two ends of the lift (3014).

11. A method for installing an offshore platform, applied to the installation device (1) according to any one of claims 7 to 10, characterized in that: The installation method comprises: Determining the number of active decks (1021) and passive decks (1022) according to the size of the offshore platform (20); Controlling the telescopic motor (10212) to drive the locking rod (10211) to extend from the side of the active deck (1021), and the radial protrusion (10214) to extend into the locking groove (10221); Controlling the rotating 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 blocking piece (10222), so that the active deck (1021) and the passive deck (1022) are fixedly connected to form a deck (102); placing the offshore platform (20) on the deck (102); Connecting the bow (101) and the deck (102), and transporting the offshore platform (20) to the connecting platform (3011) via the bow (101); The offshore platform (20) is fixed on the connecting platform (3011).

12. The installation method according to claim 11, characterized in that: The step of fixing the offshore platform (20) on the connecting platform (3011) comprises: Controlling each second rope winding machine (2011) to release the second adjustment rope (2012); Fixing the second adjustment rope (2012) on the bearing column (30111); Each second rope winding machine (2011) is controlled to tighten the second adjustment rope (2012), so that the pile leg (201) cooperates with the corresponding bearing column (30111).

13. The installation method according to claim 12, characterized in that: The method of fixing the second adjustment rope (2012) on the bearing column (30111) and controlling each second rope winding machine (2011) to tighten the second adjustment rope (2012) so that the pile leg (201) cooperates with the corresponding bearing column (30111) comprises: Fixing the second adjustment rope (2012) on the first iron ring (30113); Controlling each second rope winding machine (2011) to tighten the second adjustment rope (2012) so that the pile leg (201) is aligned with the hollow sleeve (30112); Release the second adjustment rope (2012), and fix the second adjustment rope (2012) on the second iron ring (30114); Each second rope winding machine (2011) is controlled to tighten the second adjustment rope (2012), and the hollow sleeve (30112) is pulled out from the bearing column (30111), so that the pile leg (201) extends into the hollow sleeve (30112).

14. The installation method according to claim 11, characterized in that: The method of transporting the offshore platform (20) to the connecting platform (3011) via the bow (101) comprises: Controlling the infrared signal transmitter (1053) to transmit 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, the first rope winding machine (1051) is controlled to tighten or loosen the first adjustment rope (1052) until the infrared receiver receives the infrared signal (10531) from the other corner.

15. The installation method according to claim 11, characterized in that: After transporting the offshore platform (20) to the connection platform (3011) via the bow (101), the installation method further comprises: When it is determined based on the position information fed back by the infrared positioning device (1011) that the distance between the bow (101) and the offshore foundation (30) is less than a preset value, the inflator (1013) is controlled to inflate the air cushion (1012).

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