Working ship

Abstract

The utility model belongs to the technical field of offshore wind power generation, and particularly discloses a working ship which is used for launching a stand column type floating fan foundation, a ship body of the working ship comprises a first water ballast space, the first water ballast space bears at least three stand columns, and a connecting beam of the stand column type floating fan foundation is at least partially located on the outer side of the ship body in the overlook direction. Compared with the prior art in which the water ballast tanks are directly arranged in a rectangular shape, when the ship body in the form bears the stand column type floating fan foundation with the same size, the size of the whole ship body is reduced, the ship body further comprises the second water ballast tanks, and the second water ballast tanks are selectively installed at different positions of the first water ballast tanks, so that the ship body is convenient to carry. The buoyancy center position of the ship body is adjusted so as to meet the launching requirements of the stand column type floating fan foundations of different sizes, and the launching operation of the stand column type floating fan foundations of different sizes can be completed through one work ship.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power generation, in particular to a workboat for a water-entry column-type floating wind turbine foundation. Background Art

[0002] As an important renewable energy technology, offshore wind power generation has developed rapidly globally. Compared with onshore wind power generation, the offshore wind speed is high and stable. With the development of wind resources, there is a trend from near-shallow sea to deep-far sea. The floating wind turbine foundation has become a key equipment for deep-sea wind energy development. At present, the common structure of the floating wind turbine foundation is mainly the column-type floating wind turbine foundation. The column-type floating wind turbine foundation is generally installed and fabricated on the shore. After fabrication, it is placed on a workboat, and then the workboat carries the column-type floating wind turbine foundation for water entry. After the column-type floating wind turbine foundation is launched, it is transported to the installation position by other transport ships.

[0003] As Figure 1 and Figure 2 shown, the workboat in the prior art includes a hull 1'. The hull 1' includes a plurality of ballast tanks 11'. The plurality of ballast tanks 11' are arranged in a matrix, so that the whole hull 1' is rectangular. Above the hull 1', a column-type floating wind turbine foundation 2' is loaded. The column-type floating wind turbine foundation 2' includes a plurality of columns 21' and connecting beams 22' connecting adjacent columns. However, the overall size of this rectangular hull 1' is much larger than the overall size of the column-type floating wind turbine foundation 2', which increases the manufacturing cost of the hull 1'. Secondly, the size of this hull 1' is fixed, so the position of the center of buoyancy is certain. When dealing with column-type floating wind turbine foundations 2' of different sizes and different centers of gravity, instability and other phenomena will occur, resulting in poor compatibility of the hull 1' and great inconvenience in use. Summary of the Utility Model

[0004] Based on the above, the purpose of the utility model is to provide a workboat with a smaller overall size that can meet the water-entry requirements of column-type floating wind turbine foundations of different sizes, taking into account both cost and function.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A workboat for water-entry of a column-type floating wind turbine foundation, the column-type floating wind turbine foundation includes a connecting beam and more than three columns, the connecting beam is arranged and fixedly connected between every two adjacent columns, and the workboat includes:

[0007] A hull that can carry the column - type floating wind turbine foundation. The hull includes a first ballast tank that is used to carry at least three columns, and the connecting beam is at least partially located outside the hull in the top - down view direction;

[0008] The hull further includes a second ballast tank that is selectively connected to the first ballast tank to adjust the center of buoyancy of the hull.

[0009] Preferably, the first ballast tank includes a first ballast part and a second ballast part, and one end of the first ballast part is vertically arranged in the middle of the second ballast part.

[0010] Preferably, the second ballast tank is symmetrically arranged at the end of the first ballast part away from the second ballast part, and / or on both sides of the first ballast part, and / or at both ends of the second ballast part.

[0011] Preferably, the first ballast tank includes bulkheads that can divide the first ballast tank into multiple sub - ballast tanks.

[0012] Preferably, the first ballast tank includes multiple sub - ballast tanks, and the multiple sub - ballast tanks are spliced to form the first ballast tank.

[0013] Preferably, the multiple sub - ballast tanks are connected in communication, or the multiple sub - ballast tanks are relatively independent.

[0014] Preferably, the tops of the multiple sub - ballast tanks are flush.

[0015] Preferably, a support member is also arranged on the hull, and the support member is arranged on the first ballast tank and is used to carry the columns.

[0016] Preferably, a third ballast tank is arranged on the side of the second ballast tank away from the first ballast tank, and the second ballast tank is connected to the third ballast tank by welding or ropes.

[0017] Preferably, a water pump is arranged on the sub - ballast tank.

[0018] The beneficial effects of the present utility model are:

[0019] The present utility model provides a workboat for launching a column - type floating wind turbine foundation. The hull of the workboat includes a first ballast water tank, and the first ballast water tank bears at least three columns. In the top - down view, at least a part of the connecting beam of the column - type floating wind turbine foundation is located outside the hull. Compared with the prior art where the ballast water tanks are directly arranged in a rectangle, when the hull of this form bears a column - type floating wind turbine foundation of a certain size, the number of the first ballast water tanks is greatly reduced, the size of the entire hull is reduced, and the production cost is significantly lowered. Secondly, the hull also includes a second ballast water tank, and the second ballast water tank is selectively connected to the first ballast water tank. The staff can adjust the position of the center of buoyancy of the hull by disassembling or installing the second ballast water tank at different positions of the first ballast water tank, and can adjust the position of the center of buoyancy of the hull according to the position of the center of gravity of the column - type floating wind turbine foundation, making the two as close as possible to meet the launching requirements of column - type floating wind turbine foundations of different sizes, and realizing that one workboat can complete the launching operations of column - type floating wind turbine foundations of different sizes, thus improving the compatibility of the workboat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments of the present utility model. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.

[0021] Figure 1 is the front view of the workboat provided by the prior art;

[0022] Figure 2 is the top - down view of the workboat provided by the prior art;

[0023] Figure 3 is the top - down view of the workboat provided by an embodiment of the present utility model;

[0024] Figure 4 is Figure 3 the hull structure diagram of the workboat;

[0025] Figure 5 is the top - down view of the workboat provided by another embodiment of the present utility model;

[0026] Figure 6 is Figure 5 the hull structure diagram of the workboat.

[0027] Figure 1 and Figure 2 In:

[0028] 1’, hull; 11’, ballast water tank;

[0029] 2', Column - type floating wind turbine foundation; 21', Column; 22', Connecting beam.

[0030] Figures 3 - 6 In

[0031] 1. Hull; 11. First ballast water tank; 111. First ballast part; 112. Second ballast part; 12. Second ballast water tank; 13. Bulkhead;

[0032] 2. Column - type floating wind turbine foundation; 21. Column; 22. Connecting beam;

[0033] 3. Support member. Detailed implementation manner

[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0036] Unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0038] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0039] As Figure 3 and Figure 4 shown, the present embodiment provides a workboat for a submersible column - type floating wind turbine foundation 2. The column - type floating wind turbine foundation 2 includes connecting beams 22 and more than three columns 21. The connecting beams 22 are arranged and fixedly connected between every two adjacent columns 21. In this example, the column - type floating wind turbine foundation 2 is specifically provided with three connecting beams 22 and three columns 21, and the whole column - type floating wind turbine foundation 2 is triangular in a top - down view. The workboat includes a hull 1, and the hull 1 bears the column - type floating wind turbine foundation 2. The connecting beam 22 can be located on the lower side of the column 21, that is, on the side close to the workboat, so as to improve the stability of the column - type floating wind turbine foundation 2. Further, the hull 1 includes a first ballast tank 11. The first ballast tank 11 is used to bear the column 21, and the connecting beams 22 between the columns 21 are at least partially located outside the hull 1 in the top - down direction. Compared with the prior art in which the ballast tanks are directly arranged in a rectangle, for a hull 1 of this form when bearing a column - type floating wind turbine foundation 2 of the same size, the size of the whole hull 1 is reduced, and the production cost is greatly reduced.

[0040] The first ballast tank 11 includes a first ballast part 111 and a second ballast part 112. One end of the first ballast part 111 is vertically arranged in the middle of the second ballast part 112, that is, the first ballast tank 11 is symmetrically arranged with the first ballast part 111 as the axis. Among the three columns 21 of the column - type floating wind turbine foundation 2, one column 21 is located on the first ballast part 111, and two columns 21 are located on the second ballast part 112, that is, the three columns 21 are evenly distributed on the first ballast tank 11, ensuring that the first ballast tank 11 is evenly stressed, and further ensuring the balance and stability of the hull 1.

[0041] Further, the hull 1 further includes a second ballast tank 12. The second ballast tank 12 is selectively connected to the first ballast tank. By disassembling or installing the second ballast tank 12 at different positions of the first ballast tank 11, the center of buoyancy of the hull 1 is adjusted to further ensure the balance and stability of the hull 1. For example, in this embodiment, referring to Figure 3 , when carrying the relatively large columnar floating wind turbine foundation 2, the second ballast tank 12 is installed on the first ballast part 111 of the first ballast tank 11, specifically on both sides of the end of the first ballast part 111 away from the second ballast part 112. At this time, the overall shape of the hull 1 is "I", and the position of the center of buoyancy of the hull 1 is close to the center of gravity of the columnar floating wind turbine foundation 2, ensuring that the workboat can stably carry the columnar floating wind turbine foundation 2, and further ensuring that the columnar floating wind turbine foundation 2 can be safely and smoothly lowered into the water.

[0042] In other embodiments, referring to Figure 5 , when carrying the relatively small columnar floating wind turbine foundation 2, the second ballast tank 12 is installed on the first ballast part 111, specifically on both sides of the non-end part of the first ballast part 111. At this time, the overall shape of the hull 1 is "soil", and the position of the center of buoyancy of the hull 1 is close to the center of gravity of the columnar floating wind turbine foundation 2, ensuring that the workboat can stably carry the columnar floating wind turbine foundation 2, and further ensuring that the columnar floating wind turbine foundation 2 can be safely and smoothly lowered into the water. Of course, in other embodiments, when carrying other columnar floating wind turbine foundations 2, the above two embodiments can also be combined. For example, the second ballast tank 12 is installed on both sides of the end of the first ballast part 111 away from the second ballast part 112 and on both sides of the non-end part of the first ballast part 111 at the same time. At this time, the overall shape of the hull 1 is "king", and the position of the center of buoyancy of the hull 1 is close to the center of gravity of the columnar floating wind turbine foundation 2, ensuring that the workboat can stably carry the columnar floating wind turbine foundation 2, and further ensuring that the columnar floating wind turbine foundation 2 can be safely and smoothly lowered into the water.

[0043] It can be understood that when carrying the columnar floating wind turbine foundation 2 of different sizes, the second ballast tank 12 can be disassembled or installed at different positions of the first ballast tank 11 to adjust the position of the center of buoyancy of the hull 1, so that the position of the center of buoyancy of the hull 1 is close to the center of gravity of the columnar floating wind turbine foundation 2, ensuring the launching stability of the hull 1, meeting the launching requirements of columnar floating wind turbine foundations 2 of different sizes, realizing the launching operation of columnar floating wind turbine foundations 2 of different sizes by one workboat, and improving the compatibility of the workboat. In more other practical examples, the second ballast tank 12 can also be installed at the end of the first ballast part 111 far from the second ballast part 112, and / or installed at both ends of the second ballast part 112. The second ballast tank 12 can be increased, decreased or moved according to the requirements of different columnar floating wind turbine foundations 2, as long as the position of the center of buoyancy of the hull 1 can be close to the position of the center of gravity of the columnar floating wind turbine foundation 2. It should be noted that the first ballast part 111 of the first ballast tank 11 serves as the hull of the hull 1. The direction of the hull close to the second ballast part 112 is the stern direction, and the direction of the hull far from the second ballast part 112 is the bow direction. The width of the bow is smaller than that of the stern, thereby improving the balance of the hull 1 when carrying the columnar floating wind turbine foundation 2. Further, a third ballast tank can be provided on the side of the second ballast tank 12 far from the first ballast tank 11 to help adjust the position of the center of buoyancy of the hull 1. The second ballast tank 12 and the third ballast tank are connected by welding or ropes.

[0044] The second ballast tank 12 is selectively connected to the first ballast tank 11. Specifically, when connecting, the second ballast tank 12 can be welded to the first ballast tank 11 in a welding form. When disassembling, the second ballast tank 12 and the first ballast tank 11 can be separated by laser cutting. Or, bollards are respectively provided on the tops of the first ballast tank 11 and the second ballast tank 12, and then the connection and disconnection of the first ballast tank 11 and the second ballast tank 12 are realized by tightening and loosening the bollards with ropes.

[0045] Reference Figure 4 and Figure 6 , the first ballast tank 11 further includes a bulkhead 13. The bulkhead 13 can divide the first ballast tank 11 into multiple sub-ballast tanks. Adjacent sub-ballast tanks share a bulkhead 13, which is lighter in weight, and the bulkhead 13 can also increase the strength of the hull. In other embodiments, the first ballast tank 11 can also be formed by splicing multiple sub-ballast tanks. In addition, multiple sub-ballast tanks can be arranged in a single row or in multiple rows.

[0046] The tops of multiple ballast tanks are flush. The floating state of the hull 1 can be ensured by adjusting some sub-ballast tanks, and at the same time, the moment of inertia of the free surface of the hull 1 can also be reduced to ensure sufficient stability when loading the columnar floating wind turbine foundation 2.

[0047] It can be understood that water pumps are provided on the sub-ballast tanks. Some of the sub-ballast tanks can adjust the buoyancy by pumping water into or out of themselves through the water pumps, thereby adjusting the floating state of the hull 1 and realizing the floating or sinking operation of the hull 1. Specifically, when the hull 1 carries the column-type floating wind turbine foundation 2 into the water, first, when the hull 1 enters the water, the sub-ballast tanks sink by pumping water into themselves through the water pumps. When the hull 1 sinks to separate from the column-type floating wind turbine foundation 2, the column-type floating wind turbine foundation 2 is transported away by other transport ships. Then, the sub-ballast tanks pump out the water inside themselves through the water pumps to float. In addition, when the multiple sub-ballast tanks are connected, the water surfaces inside the sub-ballast tanks can be made close, thereby ensuring the stability of the first ballast tank 11. Or when the multiple sub-ballast tanks are relatively independently arranged, the buoyancy of each sub-ballast tank can be adjusted separately, and the floating state of the hull can be adjusted more quickly. In other embodiments, when the hull 1 enters the water, some of the sub-ballast tanks can also sink by gravity feeding water into themselves, and then float by discharging the water inside themselves through an external compressed air system.

[0048] To facilitate the support of the column-type floating wind turbine foundation 2 on the hull 1, a support member 3 is also provided on the hull 1. The support member 3 can stably support the column-type floating wind turbine foundation 2 and ensure the load-bearing stability. Specifically, the support member 3 is arranged on the first ballast tank 11 to support the support column 21. It should be noted that when placing the column-type floating wind turbine foundation 2 on the hull 1 on the shore, first, the support member 3 is arranged on the hull 1 as a support foundation. Then, after the column-type floating wind turbine foundation 2 is lifted by the ship transfer trolley and sent to the support member 3, the ship transfer trolley disengages from the column-type floating wind turbine foundation 2 and leaves the hull 1. Of course, in other embodiments, the support member 3 can also first carry the column-type floating wind turbine foundation 2, and then after the support member 3 is lifted by the ship transfer trolley and sent to the hull 1, the ship transfer trolley disengages from the support member 3 and leaves the hull 1.

[0049] The support member 3 can be a trolley with wheels. At this time, the support member 3 can not only support the column 21, but also the column-type floating wind turbine foundation 2 can use the support member 3 to complete boarding the ship. In other embodiments, the support member 3 can also be just a support base.

[0050] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A workboat for launching a column - type floating wind turbine foundation (2), the column - type floating wind turbine foundation (2) comprising a connecting beam (22) and more than three columns (21), the connecting beam (22) being arranged and fixedly connected between every two adjacent columns (21), characterized in that, The workboat includes: A hull (1) capable of carrying the column - type floating wind turbine foundation (2). The hull (1) includes a first ballast tank (11) for carrying at least three columns (21). The connecting beam (22) is at least partially located outside the hull (1) in the top - down view direction. The hull (1) further includes a second ballast tank (12) selectively connected to the first ballast tank (11) to adjust the center of buoyancy of the hull (1).

2. The workboat according to claim 1, characterized in that, The first ballast tank (11) includes a first ballast part (111) and a second ballast part (112). One end of the first ballast part (111) is vertically arranged in the middle of the second ballast part (112).

3. The workboat according to claim 2, characterized in that, The second ballast tank (12) is symmetrically arranged at the end of the first ballast part (111) away from the second ballast part (112), and / or on both sides of the first ballast part (111), and / or at both ends of the second ballast part (112).

4. The workboat according to claim 1, characterized in that, The first ballast tank (11) includes bulkheads (13) that can divide the first ballast tank (11) into multiple sub - ballast tanks.

5. The workboat according to claim 1, characterized in that, The first ballast tank (11) includes multiple sub - ballast tanks, and the multiple sub - ballast tanks are spliced to form the first ballast tank (11).

6. The workboat according to claim 4 or 5, characterized in that, The multiple sub - ballast tanks are connected in communication, or the multiple sub - ballast tanks are relatively independently arranged.

7. The workboat according to claim 4 or 5, characterized in that, The tops of the multiple sub - ballast tanks are flush.

8. The workboat according to claim 1, characterized in that, A support member (3) is further arranged on the hull (1). The support member (3) is arranged on the first ballast tank (11) for carrying the column (21).

9. The workboat according to claim 1, characterized in that A third ballast tank is arranged on the side of the second ballast tank (12) away from the first ballast tank (11). The second ballast tank (12) is connected to the third ballast tank by welding or ropes.

10. The workboat according to claim 4 or 5, characterized in that, A water pump is arranged on the sub - ballast tank.

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