CN114212214A - Integral transportation and installation tool and method for tension leg floating type fan system - Google Patents
Integral transportation and installation tool and method for tension leg floating type fan system Download PDFInfo
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- CN114212214A CN114212214A CN202111420619.4A CN202111420619A CN114212214A CN 114212214 A CN114212214 A CN 114212214A CN 202111420619 A CN202111420619 A CN 202111420619A CN 114212214 A CN114212214 A CN 114212214A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B77/00—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms
- B63B77/10—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms specially adapted for electric power plants, e.g. wind turbines or tidal turbine generators
Abstract
The integral transportation and installation tool comprises a buoyancy block assembly and a buoyancy barrel, wherein the buoyancy block assembly is installed on a fan foundation of the tension leg floating type fan system, the buoyancy barrel is connected to the top end of a mooring cable, the buoyancy block assembly comprises a plurality of steel pipes arranged on a floating bridge of the tension leg floating type fan foundation, and a plurality of temporary buoyancy blocks are stacked and sleeved on the steel pipes. And injecting water into the temporary buoyancy block to enable the tension leg floating type fan foundation to reach the draft suitable for wet dragging, adopting a tugboat to wet drag the tension leg floating type fan system to a machine position, continuing injecting water into the temporary buoyancy block to enable the tension leg floating type fan foundation to reach the preset draft, and connecting a top end joint of a mooring rope to a mooring point. The invention can realize the integral wet towing of the small waterplane surface tension leg type fan and can complete the installation of the mooring rope without the need of large-scale installation ship righting.
Description
Technical Field
The invention relates to an integral transportation and installation tool and method for a tension leg floating type fan system.
Background
Offshore wind power generation is valued by various oceans because offshore wind has abundant wind resources, offshore wind speed is relatively stable, influence of terrain is small, and influence on environment is small. China is wide in coastline, the natural condition of offshore wind power development is superior, and the scale and the development speed of offshore wind power leap the front of the world. With the development scale of offshore wind farms becoming larger and larger, the trend of offshore wind power towards deep and distant sea has become a necessary development trend.
The floating type fan is an important solution for China to utilize wind energy of deep sea. The floating foundation mainly comprises a column type, a semi-submersible type and a tension leg type. Under the current technical level, the first two costs are too high to be popularized and applied. The length of the mooring rope of the tension leg foundation is far shorter than that of a vertical column type or semi-submersible type catenary mooring rope, and the weight of the foundation is small, so that the tension leg foundation has obvious advantages in cost.
At present, some tension leg type floating foundation schemes such as ECO TLP, GICON TLP and Pelastar TLP are proposed at home and abroad, the waterline surface area of these tension leg type floating foundations is very small, the mooring points and anchoring points are both below the water surface, and specific pre-tightening force is required. To this type of fan basis, whole transportation and installation are very high to technical requirement, and the waterline face of tension leg formula floating fan basis is less, can not carry out whole wet and drag, and the installation degree of difficulty of tension leg formula floating fan basis is big, hardly accomplishes the installation of tension leg under the prerequisite of guaranteeing the stability.
Disclosure of Invention
The invention aims to provide an integral transportation and installation tool and method for a tension leg floating type fan system, which can realize integral wet towing of a small waterplane surface tension leg fan and can complete installation of a mooring rope under the condition of not righting a large installation ship.
In order to achieve the above object, the present invention provides an overall transportation and installation tool for a tension leg floating type fan system, comprising:
the buoyancy block assembly is arranged on the fan base of the tension leg floating type fan system and used for increasing the area of a water plane and realizing the integral wet dragging of the tension leg floating type fan system;
and the buoyancy cylinder is connected to the top end of the mooring rope and used for completing the installation of the mooring rope.
The buoyancy block assembly comprises:
the first steel pipes are fixedly arranged on a floating bridge of the tension leg floating type fan foundation and used for fixing the temporary buoyancy blocks;
a plurality of interim buoyancy pieces, it piles up the cover and establishes on the first steel pipe for float formula fan basis for tension leg provides ballast and water line face area.
The length of the first steel pipe is larger than the total height of all the temporary buoyancy blocks in the stacking process.
The first steel pipe is provided with a bottom opening for inserting a fixing pin to prevent the temporary buoyancy block from floating upwards in the wet dragging process, and the length of the bottom opening from the bottom of the first steel pipe is larger than the height of the temporary buoyancy block.
The first steel pipe is provided with a top opening for inserting a fixing pin, so that the temporary buoyancy block is prevented from sliding downwards in the installation process of the machine site.
The temporary buoyancy block includes:
the buoyancy block main body is of a hollow structure and is used for containing liquid;
the connecting parts are fixedly arranged on the outer side of the buoyancy block main body, each connecting part is provided with a through hole, and the first steel pipe passes through the through holes so as to sleeve the temporary buoyancy block on the first steel pipe;
and the water supply and drainage port is arranged on the buoyancy block main body and is used for injecting liquid or extracting liquid.
The buoyancy block main part adopts steel construction or plastic construction, the height of buoyancy block main part is 4 ~ 5 meters, the length and the width of buoyancy block main part with the length and the width matching of pontoon bridge.
The inner diameter of the through hole in the connecting part is larger than the outer diameter of the first steel pipe.
The temporary buoyancy block also comprises a stop block arranged on the connecting part, so that the lifting appliance is prevented from falling off when the temporary buoyancy block is lifted and disassembled.
The buoyancy cylinder comprises two semi-cylinders connected through a pin, and a through hole is formed in the buoyancy cylinder and used for allowing the mooring rope to pass through.
The aperture of the through hole on the buoyancy cylinder is smaller than the size of the top end joint of the mooring rope.
The buoyancy barrel is of a plastic structure or a metal structure.
The invention also provides an integral transportation and installation method of the tension leg floating type fan system, which comprises the following steps:
step S1, installing a tower and a fan on a tension leg floating type fan foundation at a port wharf or a dock; connecting the bottom end of the mooring rope with a suction cylinder at an airport point, and connecting the top end of the mooring rope with a buoyancy cylinder;
step S2, installing the buoyancy block assembly on a tension leg floating type fan foundation;
step S3, water is injected into the temporary buoyancy block to enable the tension leg floating type fan foundation to reach the draught suitable for wet dragging, and a tugboat is adopted to wet drag the tension leg floating type fan system to a machine position;
step S4, water is injected into the temporary buoyancy block to enable the tension leg floating type fan foundation to reach preset draught, and a top end joint of a mooring rope is connected to a mooring point;
and step S5, disassembling the buoyancy block assembly.
In step S2, the first steel pipe is sleeved on the second steel pipe installed on the pontoon of the tension leg floating type fan foundation, and then the temporary buoyancy block is hoisted and sleeved on the first steel pipe.
In the step S2, a temporary buoyancy block is installed on each pontoon, and a fixing pin is inserted into the bottom end openings of the two symmetric second steel pipes to prevent the temporary buoyancy block from floating upwards in the wet-dragging process.
And in the step S4, hoisting, stacking and installing temporary buoyancy blocks on each floating bridge, and injecting water for ballasting until the tension leg floating type fan foundation reaches the preset draft.
In step S4, the mooring cable is pulled upward, the mooring cable is made to pass through the perforated structure on the tension leg floating type fan foundation, the buoyancy cylinder is detached from the mooring cable, the buoyancy cylinder is reinstalled to the top end of the mooring cable above the perforated structure until the tension leg floating type fan foundation reaches a predetermined draft, the buoyancy cylinder at the top end of the mooring cable is detached, and the top end connector of the mooring cable is connected to the mooring point.
In the step S5, the temporary buoyancy blocks are detached layer by layer from top to bottom, the water in the temporary buoyancy blocks is drained first, and then the temporary buoyancy blocks are lifted down by the small-sized floating crane.
Firstly, the temporary buoyancy block is lifted upwards above the top opening of the first steel pipe, then the long pin is inserted into the top opening, and then the long pin is pulled out after the ballast water in the temporary buoyancy block is pumped out, so that the temporary buoyancy block is lifted down.
And after the temporary buoyancy blocks are completely removed, removing all the first steel pipes.
According to the invention, the temporary buoyancy block is arranged on the basis of the tension leg floating type fan, the waterline area is increased through the temporary buoyancy block under the condition of ensuring draught, the stability is improved, the integral wet dragging of the tension leg floating type fan system is realized, the top end of the mooring rope penetrates through the buoyancy barrel, and the mooring rope can conveniently penetrate through the perforated structure on the basis of the tension leg floating type fan.
Drawings
FIG. 1 is a schematic view of a mounting structure for a buoyancy block assembly.
FIG. 2 is a top view of the temporary buoyancy block.
FIG. 3 is a side view of a temporary buoyancy block.
Fig. 4 is a schematic view of the connection of the buoyancy tube to the mooring line.
Fig. 5 is a schematic structural view of the buoyancy tube.
Fig. 6 is a schematic structural view of a tension leg floating fan system in a towing state.
Fig. 7 is a schematic view of the floating state of the mooring rope after it has passed through the perforated structure.
Fig. 8 is a schematic structural view of the tension leg floating fan system in a temporary buoyancy block ballasting state.
Fig. 9 is a schematic structural view of the tension leg floating fan system after installation.
Detailed Description
The preferred embodiment of the present invention will be described in detail below with reference to fig. 1 to 9.
The invention provides an integral transportation and installation tool of a tension leg floating type fan system, which comprises:
the buoyancy block assembly is arranged on the fan base of the tension leg floating type fan system and used for increasing the area of a water plane and realizing the integral wet dragging of the tension leg floating type fan system;
and a buoyancy cylinder 501 connected to the top end of the mooring rope 103 for completing the installation of the mooring rope.
As shown in fig. 1, the buoyancy block assembly comprises:
a plurality of first steel pipes 201 fixedly installed on the pontoon 105 of the tension leg floating type fan base, for fixing the temporary buoyancy block 202; in this embodiment, the temporary buoyancy block 202 is disposed on the peripheral pontoon 105 of the tension leg floating fan foundation;
and the plurality of temporary buoyancy blocks 202 are stacked and sleeved on the first steel pipe 201 and used for providing ballast and water surface area for the tension leg floating type fan foundation.
Further, in this embodiment, the first steel pipes 201 are symmetrically disposed at four corners of the temporary buoyancy blocks 202, and the length of the first steel pipe 201 is greater than the total height of all the temporary buoyancy blocks 202 stacked. The first steel pipe 201 is provided with a bottom opening 403 for inserting a fixing pin to prevent the temporary buoyancy block 202 from floating upwards in the wet-dragging process, and the length of the bottom opening 403 from the bottom of the first steel pipe 201 is greater than the height of the temporary buoyancy block 202. The first steel pipe is provided with a top opening 402 for inserting a fixing pin to prevent the temporary buoyancy block 202 from sliding down during installation at a machine site.
As shown in fig. 2 and 3, the temporary buoyancy block 202 includes:
a buoyancy block body 305, which is a hollow structure, for containing liquid; in this embodiment, the buoyancy block body 305 is of a rectangular columnar structure so as to be stacked, the buoyancy block body 305 is of a steel structure or a plastic structure, the height of the buoyancy block body 305 is preferably 4 to 5 meters, and the length and the width of the buoyancy block body 305 are matched with those of the pontoon 105;
a plurality of connecting parts 303 fixedly arranged outside the buoyancy block main body 305, wherein each connecting part 303 is provided with a through hole 304, the inner diameter of each through hole 304 is larger than the outer diameter of the first steel pipe 201, and the first steel pipe 201 penetrates through the through holes 304, so that the temporary buoyancy block 202 is sleeved on the first steel pipe 201; in the present embodiment, the connection portions 303 are provided at eight vertexes of the buoyancy block body 305 of the rectangular columnar structure, respectively, to achieve reliable connection;
a water supply and drainage port 302 provided on the buoyancy block body 305 for injecting or withdrawing liquid; in this embodiment, since a plurality of temporary buoyancy blocks 202 are stacked, the water supply and drainage port 302 is disposed on the side of the buoyancy block body 305 to prevent blockage, and the water supply and drainage port 302 is disposed on the upper portion of the buoyancy block body 305 to increase the liquid storage capacity of the temporary buoyancy blocks 202 as much as possible.
Further, the temporary buoyancy block 202 further comprises a stop block 301 arranged on the connecting portion 303, so that the lifting appliance is prevented from falling off when the temporary buoyancy block 202 is lifted and disassembled.
As shown in fig. 4 and 5, the buoyancy cylinder 501 is formed by connecting two half cylinders 504 through pins 502, a plurality of insertion holes are arranged on the half cylinders 504, and the pins 502 penetrate through the insertion holes to fix the two half cylinders 504 together. The semi-cylinder 504 has a through hole for passing through the mooring rope 103. The buoyancy tube 501 is preferably of a plastic construction, but may also be of a metal construction.
The invention also provides an integral transportation and installation method of the tension leg floating type fan system, which comprises the following steps:
step S1, mounting the tower and the fan on a tension leg floating type fan base at a port wharf or a dock, and completing debugging;
connecting the bottom end of the mooring rope 103 with the suction cylinder 109 at the machine site, and connecting the top end of the mooring rope 103 with the buoyancy cylinder 501; as shown in fig. 4, in this embodiment, the top end of the mooring rope 103 passes through the buoyancy tube 501, the size of the top end joint 503 of the mooring rope 103 is larger than the aperture of the through hole on the buoyancy tube 501, and the size of the top end joint 503 of the mooring rope 103 is smaller than the aperture of the through hole on the perforated structure 107 on the tension leg floating wind turbine foundation; part of the buoyancy cylinder 501 floats above the water surface, and before all the mooring ropes 103 are completely installed, the mooring ropes are in a loose state; a plurality of mooring ropes 103 can be connected to the suction tube 109;
step S2, sleeving a first steel pipe 201 on a second steel pipe 106 installed on a floating bridge 105 of the tension leg floating type fan foundation, then hoisting and sleeving a temporary buoyancy block 202 on the first steel pipe 201, and injecting water into the temporary buoyancy block 202 to enable the tension leg floating type fan foundation to reach draft suitable for wet towing; all the temporary buoyancy blocks 202 can be installed in place at one time, in the embodiment, in order to reduce the windward area in the towing process, as shown in fig. 6, one temporary buoyancy block 202 is installed on each pontoon 105, and fixing pins 401 are inserted into the bottom openings 403 of the two symmetrical second steel pipes 106 to prevent the temporary buoyancy blocks 202 from floating upwards in the wet towing process; in this embodiment, if the floating wind turbine foundation is a steel structure, the second steel pipe 106 is welded on the floating bridge 105, and if the floating wind turbine foundation is a concrete structure, the second steel pipe 106 is pre-buried in the floating bridge 105, and the height of the second steel pipe 106 is 1.5 m;
step S3, wet towing the tension leg floating type fan system to a machine position by using a towing boat;
step S4, pulling the mooring cable 103 upward by using a hook lock structure, making the mooring cable 103 pass through the perforated structure 107 on the tension leg floating type wind turbine foundation, detaching the buoyancy cylinder 501 from the mooring cable 103, and reinstalling the buoyancy cylinder 501 to the top end of the mooring cable 103 above the perforated structure 107, as shown in fig. 7, to ensure that when the tension leg floating type wind turbine foundation is ballasted and submerged, the top end of the mooring cable 103 can still float on the water surface under the action of buoyancy, so as to be conveniently connected with a mooring point;
as shown in fig. 8, water is injected into the temporary buoyancy block 202 to gradually sink the floating foundation, and when the water level in the temporary buoyancy block 202 approaches the water supply and drainage port 302, the water injection is stopped, the water supply and drainage port 302 is screwed down by a cover, and then a layer of temporary buoyancy block 202 is lifted and the water injection and the ballast are continued. Continuously adding the temporary buoyancy block 202, and filling water for ballasting until the tension leg floating type fan foundation reaches a preset draft which is slightly larger than the design draft so as to facilitate the connection of the mooring rope 103 to the mooring point 108; in the process, the temporary buoyancy block 202 provides ballast and water line surface area, so that stability is guaranteed;
detaching the buoyancy tube 501 at the top end of the mooring rope 103, and connecting the top end joint 503 of the mooring rope 103 to the mooring point 108;
step S5, after the mooring cable 103 is installed, detaching the temporary buoyancy block 202 layer by layer from top to bottom, namely, firstly draining water in the temporary buoyancy block 202, then hanging the temporary buoyancy block 202 down by a small floating crane, and in the process, gradually floating the tension leg floating type fan foundation to tighten the mooring cable 103 to form a tensioning state;
in order to use the small-sized floating crane and simultaneously avoid the inclination of a foundation of the tension leg floating type fan caused in the process of hanging down the temporary buoyancy block, the temporary buoyancy block is firstly hung upwards above the top opening 402 of the first steel pipe 201, then a long pin is inserted into the top opening 402, the temporary buoyancy block containing ballast water is prevented from sliding downwards under the condition of not providing tension, then the long pin is pulled out after the ballast water in the temporary buoyancy block is pumped out, and the temporary buoyancy block is hung down;
after the temporary buoyancy block 202 is completely removed, all the first steel pipes 201 are removed, and the tension leg floating type fan system is shown in fig. 9.
In one embodiment of the invention, a floating fan foundation with a horizontal distance of 25m from the center to the mooring line perforation may be used, the floating fan foundation having a height of 6m, the floating fan foundation being 16m below water on the bottom surface and the intermediate buoy mooring point being 12m above the water surface.
The mooring cable adopts fibre polyester cable, and total length is 78m, and the buoyancy of buoyancy section of thick bamboo is 15 tons, and interim buoyancy piece's size is 8 mx 4m, and first steel pipe total length is 14m, and the bottom trompil is apart from first steel pipe bottom 4.2m, and the top trompil is apart from first steel pipe top 1.5 m.
The specific transportation and installation process comprises the following steps:
1. installing a tower drum and a fan on a fan foundation at a port wharf or a dock, and completing debugging; the fan foundation contains ballast water, the design draught water in the working state is met, and the tension of the mooring rope is equal to the design pretightening force; meanwhile, a suction cylinder connected with a mooring rope is installed at an on-site, and the other end of the mooring rope is connected with a buoyancy cylinder.
2. A first steel pipe is installed on the basis of the fan, and then a layer of temporary buoyancy blocks is hoisted.
3. If the floating type wind turbine foundation is in the dock, water is firstly discharged to enable the floating type wind turbine foundation to float. And (4) filling water into the temporary buoyancy block until the draught reaches the design draught of towing, screwing the cover on, and inserting a long pin into the hole at the bottom end of the first steel pipe.
4. And wet towing the fan system to a machine position by adopting a towing ship.
5. Adjusting draught, adopting a hook lock structure to pull the mooring rope upwards to penetrate through a perforated structure on the fan foundation, pulling out the pin of the buoyancy cylinder, separating the two semi-cylinders from the mooring rope, and reinstalling the buoyancy cylinder on the mooring rope above the perforated structure.
6. And adding a temporary buoyancy block and injecting water for ballast, so that the draught of the floating type fan foundation is slightly larger than the designed draught in the working state.
7. The buoyancy tube on the mooring line is removed and the joint of the mooring line is connected to the mooring point.
8. And gradually pumping water in the uppermost layer of temporary buoyancy block to enable the fan foundation to gradually float upwards and the mooring rope to be gradually tensioned.
9. And pulling the temporary buoyancy block containing ballast water upwards until the top of the temporary buoyancy block exceeds the top opening of the first steel pipe, and then inserting a long pin to prevent the temporary buoyancy block from sinking. And (4) pumping water in the temporary buoyancy block, pulling out the long pin, and then hanging down the temporary buoyancy block.
The invention has the following advantages:
1. through installing interim buoyancy piece on tension leg floats formula fan basis, increase waterline area through interim buoyancy piece under the circumstances of guaranteeing to draft, improve the stationarity, realize that tension leg floats whole wet of formula fan system and drags.
2. The temporary buoyancy block can fill or pump seawater through an external pumping device, increase or reduce temporary draught of the tension leg floating type fan foundation and help to complete installation of the mooring rope.
3. The temporary buoyancy blocks can be stacked and strung together through the steel pipes on the tension leg floating type fan foundation, and the temporary buoyancy blocks are convenient to place and detach.
4. The top end of the mooring rope penetrates through the buoyancy barrel, so that the mooring rope can conveniently penetrate through the perforated structure on the basis of the tension leg floating type fan, and the buoyancy barrel is composed of two halves and can be disassembled and recycled after being installed.
It should be noted that, in the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship shown in the drawings, and are only for convenience of describing the embodiments, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (20)
1. The utility model provides a tension leg floats whole transportation installation frock of formula fan system which characterized in that contains:
the buoyancy block assembly is arranged on the fan base of the tension leg floating type fan system and used for increasing the area of a water plane and realizing the integral wet dragging of the tension leg floating type fan system;
and the buoyancy cylinder is connected to the top end of the mooring rope and used for completing the installation of the mooring rope.
2. The tool for integral transport and installation of a tension leg floating fan system according to claim 1, wherein the buoyancy block assembly comprises:
the first steel pipes are fixedly arranged on a floating bridge of the tension leg floating type fan foundation and used for fixing the temporary buoyancy blocks;
a plurality of interim buoyancy pieces, it piles up the cover and establishes on the first steel pipe for float formula fan basis for tension leg provides ballast and water line face area.
3. The tool for integral transport and installation of a tension leg floating fan system according to claim 2, wherein the length of the first steel pipe is greater than the total height of the stack of all temporary buoyancy blocks.
4. The tool for integrally transporting and installing the tension leg floating type fan system according to claim 2, wherein the first steel pipe is provided with a bottom opening for inserting a fixing pin to prevent the temporary buoyancy block from floating upwards in the wet-dragging process, and the length of the bottom opening from the bottom of the first steel pipe is greater than the height of one temporary buoyancy block.
5. The tool for integrally transporting and installing the tension leg floating fan system according to claim 2, wherein the first steel pipe is provided with an opening at the top end for inserting a fixing pin to prevent the temporary buoyancy block from sliding downwards during installation at a machine site.
6. The tool for integral transport and installation of a tension leg floating fan system according to claim 2, wherein the temporary buoyancy block comprises:
the buoyancy block main body is of a hollow structure and is used for containing liquid;
the connecting parts are fixedly arranged on the outer side of the buoyancy block main body, each connecting part is provided with a through hole, and the first steel pipe passes through the through holes so as to sleeve the temporary buoyancy block on the first steel pipe;
and the water supply and drainage port is arranged on the buoyancy block main body and is used for injecting liquid or extracting liquid.
7. The tool for integrally transporting and installing the tension leg floating type fan system according to claim 6, wherein the buoyancy block main body is of a steel structure or a plastic structure, the height of the buoyancy block main body is 4-5 m, and the length and the width of the buoyancy block main body are matched with those of the floating bridge.
8. The tool for integrally transporting and installing the tension leg floating fan system according to claim 6, wherein the inner diameter of the through hole in the connecting portion is larger than the outer diameter of the first steel pipe.
9. The tool for integral transport and installation of a tension leg floating fan system according to claim 6, wherein the temporary buoyancy block further comprises a stopper disposed on the connection portion.
10. The tool for integrally transporting and installing a tension leg floating fan system according to claim 1, wherein the buoyancy cylinder comprises two half cylinders connected by a pin, and the buoyancy cylinder is provided with a through hole for passing through the mooring cable.
11. The tool for integrally transporting and installing the tension leg floating fan system according to claim 10, wherein the aperture of the through hole on the buoyancy barrel is smaller than the size of the top end connector of the mooring rope.
12. The tool for integral transport and installation of a tension leg floating fan system as claimed in claim 10, wherein the buoyancy tube is of plastic or metal construction.
13. A method for integrally transporting and installing a tension leg floating type fan system by using the tool for integrally transporting and installing a tension leg floating type fan system according to any one of claims 1 to 12, comprising the steps of:
step S1, installing a tower and a fan on a tension leg floating type fan foundation at a port wharf or a dock; connecting the bottom end of the mooring rope with a suction cylinder at an airport point, and connecting the top end of the mooring rope with a buoyancy cylinder;
step S2, installing the buoyancy block assembly on a tension leg floating type fan foundation;
step S3, water is injected into the temporary buoyancy block to enable the tension leg floating type fan foundation to reach the draught suitable for wet dragging, and a tugboat is adopted to wet drag the tension leg floating type fan system to a machine position;
step S4, water is injected into the temporary buoyancy block to enable the tension leg floating type fan foundation to reach preset draught, and a top end joint of a mooring rope is connected to a mooring point;
and step S5, disassembling the buoyancy block assembly.
14. The overall transportation and installation method of the tension leg floating type fan system as claimed in claim 13, wherein in the step S2, the first steel pipe is sleeved on the second steel pipe installed on the pontoon of the tension leg floating type fan base, and then the temporary buoyancy block is hoisted and sleeved on the first steel pipe.
15. The method for integrally transporting and installing a tension leg floating type fan system according to claim 14, wherein in the step S2, a temporary buoyancy block is installed on each pontoon, and fixing pins are inserted into bottom openings of two symmetrical second steel pipes to prevent the temporary buoyancy block from floating upwards in the wet-towing process.
16. The method for integrally transporting and installing the tension leg floating fan system according to claim 13, wherein in the step S4, the temporary buoyancy blocks are continuously installed and hoisted and stacked on each pontoon, and water is filled for ballasting until the tension leg floating fan foundation reaches a predetermined draft.
17. The method for integrally transporting and installing a tension leg floating fan system according to claim 16, wherein the step S4 is performed by pulling the mooring rope upward, passing the mooring rope through a perforated structure of the foundation of the tension leg floating fan, detaching the buoyant cylinders from the mooring rope, re-attaching the buoyant cylinders to the top ends of the mooring rope above the perforated structure until the foundation of the tension leg floating fan reaches a predetermined draft, detaching the buoyant cylinders at the top ends of the mooring rope, and connecting the top end connectors of the mooring rope to the mooring point.
18. The method for integrally transporting and installing the tension leg floating fan system according to claim 13, wherein in the step S5, the temporary buoyancy blocks are detached from top to bottom layer by layer, the water in the temporary buoyancy blocks is drained first, and then the temporary buoyancy blocks are suspended by a small floating crane.
19. The method for integrally transporting and installing a tension leg floating fan system according to claim 18, wherein the temporary buoyancy block is lifted up above the top opening of the first steel pipe, the long pin is inserted into the top opening, and the ballast water in the temporary buoyancy block is pumped out, and then the long pin is pulled out to lift the temporary buoyancy block down.
20. The method of integrally transporting and installing a tension leg floating fan system according to claim 18, wherein all the first steel pipes are removed after the temporary buoyancy blocks are completely removed.
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