CN215109286U - Pontoon suitable for single pile foundation and floating fan combined structure system - Google Patents

Abstract

A buoy applicable to a single-pile foundation and floating fan combined structure system belongs to the field of offshore wind power. The top of the buoy is connected with a flange surface at the bottom of a lower tower drum of the upper fan; the bottom of the float bowl is provided with a guide structure for inserting the lower cylindrical structure of the float bowl into the single pile foundation; the floating barrel is provided with a fixing hole position for fixing the wharf fan with the wharf underwater temporary foundation after the wharf fan is integrally assembled; a load adjusting pump is arranged outside the floating cylinder; the inside water injection, the drain pipe of being equipped with of flotation pontoon are with the interior cabin of flotation pontoon and transfer and carry the pump intercommunication. The flotation pontoon adopts the subdivision design, and its inside is equipped with the baffle, and baffle and flotation pontoon inner wall constitute flotation pontoon inner chamber, and every cabin of its inside all is provided with independent pipeline for carry out water injection, drainage to each cabin in the flotation pontoon. The utility model discloses a flotation pontoon structure can play and provide buoyancy, adjust effects such as balanced, the direction is taken one's place, can realize that the fan is whole to float the installation, does not rely on large-scale marine installation ship, can satisfy the extensive construction of marine wind power and reduce cost and improve effect's demand.

Description

Pontoon suitable for single pile foundation and floating fan combined structure system

Technical Field

The utility model belongs to offshore wind power field relates to a flotation pontoon suitable for single pile basis and floating fan integrated configuration system.

Background

At present, components such as an upper fan of offshore wind power, including a tower barrel, an engine room, a hub, fan blades and the like, are usually installed in blocks, namely the components of the upper fan are respectively transported to a specified place in batches and then are sequentially hoisted and installed by using a self-elevating installation ship, the leg length requirement of the installation ship is higher under the conditions of water depth of more than 50 meters and thick silt layer, and domestic corresponding installation ship resources are extremely scarce; in addition, the hoisting operation time of the self-elevating installation ship is longer, compared with land hoisting, the offshore operation environment is complex and changeable, the construction difficulty is large, and the progress and the quality are difficult to control. Therefore, the integrally installed floating type fan combined structure system is provided, the floating type fan installation of the novel structure system does not depend on a self-elevating installation vessel, the offshore operation time is short, and the comprehensive efficiency is extremely superior.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a flotation pontoon that is applicable to this system to the characteristics of single pile and floating fan integrated configuration system, specifically is the flotation pontoon among the integrated configuration that provides a floating fan.

The utility model adopts the technical proposal that:

a buoy applicable to a single-pile foundation and floating fan combined structure system comprises a guide structure 6, a cylinder 7, a partition plate 8, a built-in pipeline 12, a fixing hole position 13, a sealing ring 14 and a grouting pipeline 15.

The top of the buoy 4 is provided with a flange surface which is used for being connected with a flange surface at the bottom of a lower tower drum of the upper fan 3 through a flange 5; the bottom of the pontoon 4 is provided with a guide structure 6 for inserting a lower cylinder 7 structure of the pontoon 4 into the mono-pile foundation 2; the buoy 4 is provided with a fixing hole position 13 for fixing the integral assembled wharf fan with a wharf underwater temporary foundation and connecting and fixing the integral assembled wharf fan with a transport ship in the subsequent marine transportation process; a load adjusting pump is arranged outside the floating cylinder; the inside water injection, the drain pipe of being equipped with of flotation pontoon 4 for communicate flotation pontoon inner chamber and transfer and carry the pump.

The buoy 4 adopts a subdivision design, a partition plate 8 is arranged in the buoy 4, the partition plate 8 and the inner wall of the buoy form an inner buoy chamber, and the inner chamber comprises an upper horizontal layer chamber 9, a middle horizontal layer chamber 10 and a lower horizontal layer chamber 11 in the vertical direction. Each horizontal layer inner cabin comprises four small cabins, the total number of the small cabins is twelve, and each cabin is provided with an independent pipeline for injecting water and draining water to each cabin in the buoy 4.

The buoy is provided with a through grouting line 15. Grouting is carried out in the annular gap between the single pile and the tower barrel at the bottom of the buoy through a grouting pipeline 15, wherein the bottom opening of the grouting pipeline 15 is arranged at the tower barrel at the bottom of the buoy, a hole penetrates through the grouting pipeline 15, the grouting pipeline 15 is attached to the inner wall and the outer wall of the buoy 4, and the top opening of the grouting pipeline 15 is arranged above the water surface and connected with grouting equipment.

The floating and sinking of the floating fan in water can be controlled by controlling the water injection and drainage amount of each cabin of the floating drum; the inclination of the floating fan in water can be controlled by controlling the water amount of different cabins, so that the leveling of the floating fan is realized, and grouting is performed after the leveling, so that permanent fixation is realized.

Furthermore, a sealing ring 14 is arranged in an annular gap between the inner wall of the bottom of the buoy 4 and the single-pile foundation 2, so that a sealing effect is achieved.

The main functions of the buoy are as follows:

(1) the empty cabin on the buoy provides enough buoyancy to support the upper fan, the weight of the upper fan is 1000 tons at most according to the current mainstream 8-10MW fan model, and the buoyancy provided by the buoy reaches 1500 tons.

(2) The fixing hole positions arranged on the floating barrel are used for fixing the wharf fan after being integrally assembled and the wharf underwater temporary foundation and are fixedly connected with a transport ship during subsequent marine transportation.

(3) The floating cylinder is externally connected with a load adjusting pump, and the floating cylinder is internally provided with a water injection pipe and a water discharge pipe, so that the floating fan can be controlled to float and sink in water and be leveled.

(4) The bottom of the float bowl is provided with a guide plate which is easily inserted into the single-pile foundation when in place.

The floating fan combined structure can float on the water surface by virtue of the floating barrel, can realize integral heaving by adjusting the load of the floating barrel, is connected and fixed with the transport ship through the fixed hole position on the floating barrel and the telescopic connecting rod arranged at the bottom of the transport ship to form an integral body with the transport ship, and realizes that the floating fan sails along with the transport ship during marine transportation; the support frame on the transport ship is rigidly connected with a middle tower drum of the floating type fan, so that the stability of the floating type fan along with the navigation of the transport ship is ensured; and (4) transporting to a fan position, and positioning right above the single-pile foundation by using an anchoring system or a DP (data processing) system of a transport ship to enable a bottom end interface of the floating fan to be aligned with the underwater single-pile foundation. Then, the connection between the bottom of the transport ship and the buoy is released, the vertical connection between a frame and a fan tower cylinder on the transport ship is released, the horizontal connection between the frame and the fan tower cylinder is kept, the buoy is used for ballasting, the tower cylinder in the middle of the fan moves downwards along a slide rail of a connecting structure to realize the overall sinking of the floating fan, the overall level is controlled by regulating and loading each cabin of the buoy in the sinking process, the buoy is butted and positioned with the single pile foundation through a bottom guide structure of the buoy, a rubber or polyurethane sealing ring is arranged in an annular gap between the root position of a cylinder at the bottom of the buoy and the single pile foundation, the sealing ring has elasticity and can be compressed within a certain range without being damaged, the sealing ring is fixedly connected on the inner wall of the cylinder at the bottom of the buoy through bolts, after the single pile is inserted, the sealing ring is compressed on the inner wall of the cylinder at the bottom of the buoy and the outer wall of the single pile, and is within the height (150mm-250mm) of the sealing ring, the inner wall of the cylinder at the bottom of the float bowl and the outer wall of the single pile are completely sealed. And after the measurement meets the requirement of installation accuracy, grouting is carried out to connect the annular gap between the buoy and the single pile foundation, after the grouting strength meets the requirement, the horizontal connection between the frame and the fan tower drum on the transport ship is completely released, and the transport ship is withdrawn to finish the installation.

The utility model has the advantages as follows:

the utility model provides a flotation pontoon is as a part that is applicable to the floating fan in single pile basis and the floating fan integrated configuration system, has played and has provided buoyancy, adjusts the balance, and the direction is taken one's place the equidistance installation to realized that the fan is whole to float, not relying on large-scale marine installation ship, reduced the offshore construction degree of difficulty, practiced thrift marine hoist and mount time, showing and reducing marine construction cost, satisfy the demand of marine wind-powered electricity large-scale construction and cost reduction increase.

Description of the drawings:

FIG. 1 is an overall view of the utility model after being installed in place;

fig. 2 is a diagram of the floating fan of the present invention;

FIG. 3 is an overall view of the float bowl of the present invention;

FIG. 4 is a cross-sectional view of the float bowl of the present invention;

FIG. 5 is a cross-sectional view of the bottom of the float bowl after the present invention is installed in place;

in the figure: 1, a floating fan structure; 2, single pile foundation; 3, a fan; 4, a buoy; 5, a flange; 6, a guide structure; 7, a cylinder; 8, a partition board; 9, an upper inner cabin; 10 middle-layer inner cabin; 11 lower inner chamber; 12 a built-in pipeline; 13 fixing hole sites; 14, a sealing ring; 15 grouting lines.

Detailed Description

For a thorough understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

The floating type wind turbine structure comprises a floating wind turbine structure 1 and a single-pile foundation 2, wherein the floating wind turbine structure 1 is divided into an upper wind turbine 3 and a lower buoy 4, and the single-pile foundation is a large-diameter (7-10 m in diameter) steel pile which is pre-driven into a seabed. The flotation pontoon 4 is installed in the tower section of thick bamboo bottom of upper portion fan 3, and the flotation pontoon top is passed through flange 5 with tower section of thick bamboo bottom and is connected, and 4 bottoms of flotation pontoon are equipped with guide structure 6, make the lower part drum 7 of flotation pontoon 4 insert the single pile basis 2 easily.

The flotation pontoon 4 adopt the subdivision design, its inside baffle 8 that is equipped with, the inner chamber of flotation pontoon is constituteed to baffle 8 and flotation pontoon inner wall, along the vertical direction, the inner chamber divide into three horizontal layer inner chambers 9, 10 and 11 about last well. Each horizontal layer inner cabin is divided into four cabins by partition boards, and twelve cabins are provided in total. Through the external load-adjusting pump and the internal pipeline 12 (shown in fig. 4 for clarity, only one side pipeline is shown), actually, each of the twelve chambers is provided with an independent pipeline for injecting and draining water to each chamber in the floating barrel 4, and floating and sinking of the floating fan in water can be controlled. And the inclination of the floating fan in water can be controlled by controlling the water amount of different cabins, so that the leveling of the floating fan is realized.

The buoy 4 is provided with a fixing hole position 13, and a connecting rod on the transport ship can be inserted into the fixing hole position and is completely fixed, so that the transport ship and the fan buoy combined body are integrated in transportation. And a sealing ring 14 is arranged in an annular gap between the single pile and the inner wall of the bottom of the buoy to play a sealing role so as to fix the combined structure of the buoy and the single pile by grouting. Grouting is carried out in an annular gap between the single pile and the bottom tower barrel of the buoy through a grouting pipeline 15, wherein the bottom of the grouting pipeline 15 is opened at the bottom tower barrel of the buoy (for example, at the position 0.5 meter above the position of the sealing ring) and is perforated, the grouting pipeline 15 is attached to the inner wall and the outer wall of the buoy 4, and the top of the grouting pipeline 15 is opened above the water surface and is connected with grouting equipment.

The above-mentioned embodiments only represent the embodiments of the present invention, but can not be understood as the limitation of the scope of the present invention, and it should be noted that, for those skilled in the art, a plurality of variations and improvements can be made without departing from the concept of the present invention, and all of them belong to the protection scope of the present invention.

Claims (2)

1. A buoy applicable to a single-pile foundation and floating fan combined structure system is characterized by comprising a guide structure (6), a cylinder (7), a partition plate (8), a built-in pipeline (12) and a fixing hole site (13);

the top of the floating barrel (4) is provided with a flange surface which is used for being connected with a flange surface at the bottom of a lower tower barrel of the upper fan (3) through a flange (5); the bottom of the buoy (4) is provided with a guide structure (6) for inserting a lower cylinder (7) structure of the buoy (4) into the single-pile foundation (2); the buoy (4) is provided with a fixing hole position (13) for fixing the integrally assembled wharf fan with a wharf underwater temporary foundation and connecting and fixing the integrally assembled wharf fan with a transport ship in the subsequent marine transportation process; a load adjusting pump is arranged outside the floating cylinder; a water injection and drainage pipe is arranged in the float bowl (4) and is used for communicating the float bowl inner cabin with the load regulating pump;

the buoy (4) adopts a subdivision design, a partition plate (8) is arranged in the buoy, the partition plate (8) and the inner wall of the buoy form a buoy inner chamber, and the inner chamber comprises an upper horizontal layer inner chamber (9), a middle horizontal layer inner chamber (10) and a lower horizontal layer inner chamber (11) in the vertical direction; each horizontal layer inner cabin comprises four small cabins, and each small cabin is provided with an independent built-in pipeline (12) for injecting water and draining water to each cabin in the buoy (4);

the floating and sinking of the floating fan in water can be controlled by controlling the water injection and drainage amount of each cabin of the floating drum; the inclination of the floating fan in water can be controlled by controlling the water amount of different cabins, so that the leveling of the floating fan is realized, and grouting is performed after the leveling, so that permanent fixation is realized.

2. A buoy for a mono pile foundation and a floating wind turbine combined structural system as claimed in claim 1, characterized in that a sealing ring (14) is arranged in an annular gap between the inner wall of the bottom of the buoy (4) and the mono pile foundation (2).

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