CN218779528U

CN218779528U - Suction bucket fan basis is floated and is unloaded system of sinking

Info

Publication number: CN218779528U
Application number: CN202222238091.5U
Authority: CN
Inventors: 刘扬; 王晨思; 郝二通; 闫中杰; 闵烨; 马宇轩; 蔡英鹏; 李宁; 谢治; 林亮
Original assignee: China Shipbuilding Group Wind Power Development Co ltd
Current assignee: China Shipbuilding Group Wind Power Development Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2023-03-31
Anticipated expiration: 2032-08-24

Abstract

The utility model relates to a suction bucket fan basis is floated and is unloaded system of sinking. The system comprises a semi-submersible ship and a floating crane ship, wherein two pairs of suction buckets are arranged on the semi-submersible ship, exhaust valves are arranged on the suction buckets, and the suction buckets are connected into a whole through a guide pipe frame; a pump prying block is arranged on the suction barrel; the floating crane ship is provided with a hanging piece and a hanging piece, one end of the hanging piece is connected to the floating crane ship, the other end of the hanging piece is connected to the hanging piece, the hanging piece is used for connecting the jacket, and the floating crane ship and the jacket are connected to the cross cable. Therefore, the system can be used for efficiently and flexibly installing the suction bucket and the jacket, so that the dependence on a large floating crane ship is high when the suction bucket fan foundation is installed on the sea, and the system can also be used for flexible installation through a small floating crane ship.

Description

Suction bucket fan basis is floated and is unloaded system of sinking

Technical Field

The utility model relates to an ocean engineering machine tool field specifically relates to a suction bucket fan basis is floated and is unloaded system of sinking.

Background

With the increasing deepening of the concept of 'double carbon' in China, wind energy is vigorously developed as clean energy. The field of ocean engineering is also constantly exploring the development and utilization of onshore and offshore wind farms.

The suction bucket jacket technology is gradually popularized in the wind power industry in nearly two years, has the advantages of convenience in offshore installation, short installation period, reusability, convenience in dismantling, strong applicability to water depth and soil and the like, is mainly applied to anemometer tower foundations and pile driving positioning frame foundations of jackets at present, and particularly is mainly applied to sea areas with water depth of about 20 meters.

The development trend of offshore wind power is that offshore wind power is promoted to deepwater step by step. Research shows that the jacket foundation can be applied to water depth within 60 meters, the problem of limitation of a single-pile foundation on applicable water depth is broken through, and the jacket foundation of the suction bucket has greater competitive advantage in the future. However, to meet the application requirements under deeper water, the structural weight of the suction bucket jacket foundation is also increased, and higher requirements are made on installation resources.

However, at present, there is no device capable of efficiently and flexibly installing a suction bucket and a jacket, so that a large-scale floating crane ship has strong dependence when a suction bucket fan foundation is installed on the sea, the scheduling cost is high, and the small-scale floating crane ship cannot be used for flexible installation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a system is put to suction bucket fan basis floating unloading to can install suction bucket and jacket high-efficiently nimble, progressively break away from the dependence to large-scale floating pontoon when making suction bucket fan basis carry out marine installation from this.

In order to achieve the purpose, the utility model provides a suction bucket fan foundation floating and sinking system, which comprises a semi-submersible ship and a floating crane ship, wherein two pairs of suction buckets are arranged on the semi-submersible ship, exhaust valves are arranged on the suction buckets, jacket is arranged on the suction buckets, and the jacket is connected with all the suction buckets to form a suction bucket fan foundation; wherein, a pump prying block is arranged on the suction barrel; the floating crane ship is provided with a hanging piece and a hanging piece, one end of the hanging piece is connected to the floating crane ship, the other end of the hanging piece is connected to the hanging piece, and the hanging piece is used for connecting the jacket; the floating crane ship is connected with the jacket through a cross cable.

When the semi-submersible ship is submerged underwater to a preset floating and unloading draft, the suction bucket can be closed to carry out self-floating operation; the floating crane vessel is connected to the cross-over cable to move the jacket out of the area of the semi-submersible vessel;

when the exhaust valve is opened, the suction bucket can exhaust air, so that the jacket and the suction bucket can sink when the floating crane vessel is disconnected from the hanger;

when mud is deposited at the bottom of the suction bucket, the exhaust valve is opened to completely exhaust the air in the suction bucket, so that the suction bucket completes the pumping and filling of the suction bucket jacket through the pump prying block until the mud is completely filled.

Alternatively, the cross cables are arranged in two sets and arranged in a cross.

Alternatively, the cross-wires are detachably connected at both ends to the vessel and the jacket, respectively.

Alternatively, the hitching member is provided as a lifting rope and the hitching member is provided as a hook.

Alternatively, the lifting rope is a steel wire rope.

Alternatively, the suction bucket is welded to the jacket.

Alternatively, the connection strength of the suction bucket and the semi-submersible ship is as follows: the semi-submersible vessel can be disconnected from the suction bucket when removed after the suction bucket is partially submerged.

Alternatively, the two pairs of suction buckets are symmetrically arranged.

The concrete engineering process of the suction bucket fan foundation floating and sinking system is as follows: the semi-submersible ship conveys the suction bucket and the guide pipe frame to a designated position, and the floating crane ship breaks down near the machine position of the guide pipe frame of the suction bucket and is close to the semi-submersible ship. The pump skid is installed on the suction bucket by the floating vessel, and a hanger on the floating vessel is ready to be connected to the jacket and to the cross-over cable. After the limiting structure of the jacket is removed (the jacket is connected to the semi-submersible ship through limiting results such as supporting rods and the like, and is prevented from being toppled over in the sailing process), the pressure in the suction bucket is detected. After that, the semi-submersible ship starts to submerge, the suction bucket jacket foundation can float automatically after the pressure in the bucket reaches a certain value, and at the moment, the height of a hanging and connecting piece of the floating crane ship can be kept unchanged, and the hanging and connecting piece is loosened.

And the semi-submersible ship continues to dive until a preset separation gap is formed, and the height of the hanging piece is kept unchanged and the hanging piece is loosened. The cross cables are matched with the hoisting pieces, and the floating crane ship and the jacket are moved out of the semi-submersible ship area in an anchor cable stranding mode. The semi-submersible ship floats upwards and is evacuated, the auxiliary floating crane ship drives the suction bucket and the jacket to move to the installation position, the floating and unloading step is completed, and the jacket sinking operation is the next step. And opening an exhaust valve, continuously detecting the air pressure in the suction barrel, and transferring the jacket to a key position after the air pressure is stable at a specific value, so that the height of the hanging piece is kept unchanged, and the hanging piece is loosened.

And keeping the height of the hanging piece, continuously exhausting until the pressure in the barrel is reduced to a preset value, lowering the jacket to a key position, tensioning the hanging piece, and closing the exhaust valve. And (5) lowering the hoisting part until the suction bucket reaches the mud surface position. And opening the exhaust valve, and allowing the suction bucket to freely enter mud. The horizontal state and the mud entering condition of the suction barrel are detected, and the levelness of the control valve is adjusted. And pumping water through a pump prying block until the suction barrel completely enters mud, tripping the suction barrel, confirming the penetration condition, and continuing grouting operation if grouting is needed. The floating crane ship recovers the pump pry block and evacuates, thereby completing the process.

Through the technical scheme, the floating, unloading and sinking system for the suction bucket fan foundation can efficiently and flexibly float, unload and sink the suction bucket, and gradually get rid of the dependence on a large floating crane ship when the suction bucket fan foundation is installed on the sea. And simple structure, convenient operation can be applicable to the sea area of the degree of depth more than 20 meters betterly.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front view of a suction bucket wind turbine foundation floating and sinking system provided by the present disclosure in one embodiment;

FIG. 2 is a schematic top view of an embodiment of a suction bucket wind turbine foundation floating and sinking system provided by the present disclosure;

FIG. 3 is a schematic structural diagram of a floating-unloading sinking system for a fan foundation of a suction bucket provided by the present disclosure during a floating-unloading process;

FIG. 4 is a schematic structural diagram of a foundation floating and sinking system of a suction bucket wind turbine provided by the present disclosure during sinking;

FIG. 5 is a schematic structural diagram of a foundation floating and sinking system of a suction bucket wind turbine provided by the present disclosure during sinking;

FIG. 6 is a schematic structural diagram of a foundation floating and sinking system of a suction bucket wind turbine provided by the present disclosure during sinking;

fig. 7 is a schematic structural diagram of a foundation floating and sinking system of a suction bucket wind turbine provided by the present disclosure during sinking, and the sinking degrees in fig. 4 to 7 are different;

fig. 8 is a schematic structural view of the suction bucket fan foundation floating-unloading-sinking system provided by the present disclosure in a state of completely sinking mud.

Description of the reference numerals

1-semi-submersible ship, 2-floating crane, 3-suction bucket, 4-jacket, 5-hanging piece, 6-hanging piece, 7-pump prying block and 8-cross cable.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.

According to the specific mode that this disclosure provided, a system is put to suction bucket fan basis floating unloading is provided, can install suction bucket fan basis high-efficiently in a flexible way to progressively get rid of the dependence to large-scale floating crane ship when suction bucket fan basis carries out marine installation. One specific embodiment is indicated in fig. 1 to 8. It should be noted that, in fig. 1 to 7, the black filler in the suction bucket refers to water. When the suction bucket is completely filled with mud, the water in the suction bucket is completely discharged, as shown in fig. 8.

Referring to fig. 1 to 8, the system for floating, unloading and sinking a fan foundation of a suction bucket comprises a semi-submersible ship 1 and a floating crane ship 2, wherein two pairs of suction buckets 3 are arranged on the semi-submersible ship 1, exhaust valves are arranged on the suction buckets 3, a guide pipe frame 4 is arranged on each suction bucket 3, and the guide pipe frames 4 are connected to all the suction buckets 3 to form a fan foundation of the suction bucket; wherein, a pump prying block 7 is arranged on the suction barrel 3; the floating crane ship 2 is provided with a hanging piece 5 and a hanging piece 6, one end of the hanging piece 6 is connected to the floating crane ship 2, the other end of the hanging piece 6 is connected to the hanging piece 5, and the hanging piece 5 is used for connecting the jacket 4; and the floating vessel 2 and jacket 4 are connected by cross-over cables 8.

When the semi-submersible ship 1 submerges to a preset floating and unloading draught under water, the suction bucket 3 can be closed to carry out self-floating operation; the floating crane vessel 2 is connected to the cross-over lines 8 to move the jacket 4 out of the area of the semi-submersible vessel 1; when the exhaust valve is opened, the suction bucket 3 can exhaust air, so that the jacket 4 and the suction bucket 3 can sink when the floating crane 2 is disconnected from the hanger 5; when the bottom of the suction bucket 3 is filled with mud, the exhaust valve is opened to completely exhaust the air in the suction bucket 3, and the air continuously sinks through the self weight, so that the suction bucket 3 finishes the water pumping and the penetration of the jacket 4 of the suction bucket 3 through the pump prying block 7 until the mud is completely filled.

The concrete engineering process of the suction bucket fan foundation floating, unloading and sinking system is as follows: the semi-submersible vessel 1 transports the suction bucket 3 and the jacket 4 to a designated location, and the floating crane vessel 2 is anchored near the stand of the jacket 4 of the suction bucket 3, close to the semi-submersible vessel 1. A pump skid 7 is mounted on the suction bucket 3 and a hitch 5 on the floating vessel 2 is ready to be connected to the suction bucket 3 jacket 4 and to the cross-over cable 8. After the limiting structure of the jacket 4 is removed (the jacket 4 is connected to the semi-submersible vessel 1 through a limiting result such as a supporting rod, and the dumping in the sailing process is avoided), the pressure in the suction bucket 3 is detected. After that, the semi-submersible vessel 1 starts to submerge, the jacket 4 can float by itself after the pressure in the bucket reaches a certain value, and at the moment, the height of the hanging and connecting piece 6 of the floating crane vessel 2 can be kept unchanged, and the hanging and connecting piece 5 is loosened.

The semi-submersible vessel 1 continues to submerge until a preset separation gap, and the height of the hanging piece 6 is kept unchanged and the hanging piece 5 is loosened. The cross-over lines 8 cooperate with the suspension links 6 to move the floating vessel 2 and jacket 4 out of the area of the semi-submersible vessel 1 by winching the anchor lines.

The semi-submersible vessel 1 floats upwards and is evacuated, the auxiliary floating crane vessel 2 drives the suction bucket 3 and the jacket 4 to move to the installation position, the floating and unloading step is completed, and the jacket 4 is sunk and operated in the next step. And opening an exhaust valve, continuously detecting the air pressure in the suction barrel 3, and after the air pressure is stabilized at a specific value, lowering the jacket 4 to a key position shown in figure 4, keeping the height of the hanging piece 6 unchanged, and loosening the hanging piece 5.

And keeping the height of the hanging piece 6, continuing exhausting until the pressure in the barrel is reduced to a preset value, lowering the jacket 4 to a key position shown in figure 5, tensioning the hanging piece 5, and closing the exhaust valve.

As shown in fig. 6, the suspension elements 6 are lowered until the suction bucket 3 reaches the mud level.

As shown in fig. 7, the exhaust valve is opened and the suction bucket 3 is free to enter mud. The horizontal state and the mud entering condition of the suction barrel 3 are detected, and the levelness of the control valve is adjusted.

As shown in fig. 8, water is pumped by the pump pry block 7 until the suction bucket 3 is completely filled with mud, the suction bucket is unscrewed, the penetration condition is confirmed, and if grouting is needed, the grouting operation is continued. The floating crane 2 recovers the pump skid 7 and evacuates it, thereby completing.

Through the technical scheme, the floating, unloading and sinking system for the fan foundation of the suction bucket can efficiently and flexibly float, unload and sink the suction bucket 3, and accordingly dependence on the large floating crane ship 2 when the fan foundation of the suction bucket is installed on the sea is gradually eliminated. And simple structure, convenient operation can be applicable to the sea area that the degree of depth is greater than 20 meters better.

It should be noted that the jacket-based foundation mentioned herein includes a suction bucket 3 and a jacket 4. The used floating crane ship is a small floating crane ship.

In addition, in the present invention, without being described to the contrary, the use of the directional words such as "up and down" generally refers to the floating, unloading and sinking system of the suction bucket fan foundation provided by the present disclosure. The inner and outer parts refer to the inner and outer parts of the corresponding part contour. "far and near" refers to a state of being close to or far from each other, and does not refer to actual physical quantities.

In one embodiment provided by the present disclosure, the cross cables 8 are arranged in two sets and arranged in a cross. This is beneficial for evenly withstanding the tensile force.

In an embodiment provided by the present disclosure, both ends of the crossing cable 8 are detachably connected to the floating crane vessel 2 and the jacket 4, respectively, so as to be flexibly adjusted according to specifications of the floating crane vessel 2 and the jacket 4, thereby improving applicability to a field application environment.

In the present disclosure, the hanging member 5 is provided as a lifting rope, and the hanging member 6 is provided as a hook. Therefore, the hook can be hung on the lifting rope, the structural design is beneficial to adapting to the position deviation of the jacket 4 and the floating crane ship 2, the fault tolerance is improved, and the device can be better adapted to actual use scenes.

In one embodiment provided by the present disclosure, the lifting rope is a steel wire rope. Therefore, the composite material has certain toughness and better tensile strength, and further ensures the later-stage use effect.

In one embodiment provided by the present disclosure, the suction bucket 3 is welded to the jacket 4, thereby securing the connection strength therebetween. During the welding process, a welding material may be added to help the jacket 4 and the suction bucket 3 to be more firmly welded together.

In the present disclosure, the connection strength of the suction bucket 3 and the semi-submersible vessel 1 is: when the semi-submersible vessel 1 is removed after the suction bucket 3 is partially submerged, the semi-submersible vessel 3 can be separated, so that the connection relationship between the suction bucket 3 and the semi-submersible vessel 1 is released.

In the present disclosure, the two pairs of suction buckets 3 are symmetrically disposed. This is advantageous in that the suction bucket 3 can be smoothly submerged into the sea water.

The beneficial effect of this disclosure lies in:

1. the system can be used for flexibly installing the suction bucket jacket, can be realized by a small floating crane ship, reduces the dependence of the traditional installation equipment on a large floating crane ship, has low integral required cost and has better economy and applicability;

2. the construction of an offshore wind farm is promoted to be promoted to deepwater, the jacket type foundation can be applied to the water depth within 60m, the problem that the applicable water depth is limited by a single-pile foundation is solved, and the jacket foundation of the suction bucket has greater competitive advantage in the future.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

Claims

1. The floating, unloading and sinking system for the suction bucket fan foundation is characterized by comprising a semi-submersible ship (1) and a floating crane ship (2), wherein two pairs of suction buckets (3) are arranged on the semi-submersible ship (1), exhaust valves are arranged on the suction buckets (3), guide pipe frames (4) are arranged on the suction buckets (3), and the guide pipe frames are connected to all the suction buckets (3) to form the suction bucket fan foundation; wherein a pump prying block (7) is arranged on the suction barrel (3); the floating crane ship (2) is provided with a hanging piece (5) and a hanging piece (6), one end of the hanging piece (6) is connected to the floating crane ship (2), the other end of the hanging piece (6) is connected to the hanging piece (5), and the hanging piece (5) is used for connecting the jacket (4); the floating crane ship (2) is connected with the jacket (4) through a cross cable (8);

when the semi-submersible ship (1) is submerged to a preset floating and unloading draft under water, the suction bucket (3) can be closed to carry out self-floating operation; the floating crane vessel (2) is connected to the cross-over cable (8) to move the jacket (4) out of the area of the semi-submersible vessel (1);

when the exhaust valve is opened, the suction bucket (3) can be exhausted, so that the jacket (4) and the suction bucket (3) can sink when the floating crane (2) is disconnected from the hanging piece (5);

when mud is deposited at the bottom of the suction bucket (3), the exhaust valve is opened to completely exhaust the air in the suction bucket (3), so that the suction bucket (3) finishes pumping water and filling the jacket (4) of the suction bucket (3) through the pump prying block (7) until the mud is completely filled.

2. The suction bucket wind turbine foundation floating and sinking system according to claim 1, wherein the crossing cables (8) are arranged in two groups and are arranged crosswise.

3. The suction bucket fan foundation floating and sinking system of claim 1, wherein both ends of the crossing cable (8) are detachably connected to the floating crane vessel (2) and the jacket (4), respectively.

4. The suction bucket fan foundation floating and submerging system of claim 1, wherein the hitching member (5) is provided as a lifting rope and the hitching member (6) is provided as a hook.

5. The suction bucket fan foundation floating, dumping and sinking system of claim 4 and wherein said lifting rope is a wire rope.

6. The suction bucket fan foundation floating and submerging system of claim 1, wherein the suction bucket (3) is welded to the jacket (4).

7. The system for floating, unloading and sinking a foundation of a suction bucket wind turbine according to claim 1, wherein the connection strength of the suction bucket (3) and the semi-submersible vessel (1) is: the semi-submersible vessel (1) can be disconnected from the suction bucket (3) when removed after the suction bucket (3) is partially submerged.

8. The suction bucket wind turbine foundation floating, dumping and sinking system of claim 1, wherein said two pairs of suction buckets (3) are symmetrically arranged.