A bilge structure and bottom-sitting barge

Abstract

The present invention relates to the technical field of offshore wind power operation, and specifically to a bilge structure and a bottom-sitting barge, wherein the bilge structure is suitable for connection under the hull, and the bilge structure can be used as an independent module to be connected to similar ships or ships of the same series. The bilge structure includes at least a plurality of ballast tanks. Since the bilge structure can be connected under the hull of a bottom-sitting barge or a cargo ship in the prior art, the hull's draft can be increased, and the operable water depth is also greatly increased. The full-load draft of the barge is greatly increased without changing the empty-load draft of the barge, so that the hull can meet the operation requirements in areas with large tidal ranges or deep water depths. It is only necessary to modify the bottom-sitting barge or cargo ship in the prior art, and the modification cost is low and the economy is good.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power operation, and in particular to a cabin bottom structure and a bottom-sitting barge. Background Art

[0002] At present, the development and construction of domestic offshore wind power has gradually entered the fast lane. Fujian, Jiangsu, Guangdong, Zhejiang, Shandong and other provinces have begun to vigorously develop the construction of offshore wind power, and some offshore wind power projects in these provinces need to face the problem of shallow or even extremely shallow water depth (average water depth below 3m). For shallow water positions, traditional wind power installation platforms are difficult to enter the machine position for construction work due to their deep draft. At present, the mainstream solution for this situation is to use a shallow draft bottom-sitting barge + crawler crane to install wind turbines in shallow waters. After the shallow draft bottom-sitting barge enters the operating area during the tide, it uses the bottom-sitting method to achieve the "static to static" installation required for wind turbine installation. The bottom-sitting barge used in shallow waters mainly needs to meet the following three requirements:

[0003] 1. There must be sufficient bottom strength, and a double bottom is usually required to ensure the safety of the bottom construction.

[0004] 2. There should be enough empty draft so that the barge can enter the shallow water area to operate during the tide.

[0005] 3. There is enough full-load draft to keep the machine in operation during high water level periods in areas with large tidal ranges (such as the tidal range of 5-7m in Fujian), so that the wind turbine installation can have sufficient operation time and increase the efficiency of installation.

[0006] However, the cost of building a new bottom barge that can meet the above requirements is very high. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect of high cost of bottom-sitting barges in the prior art that can meet the needs of offshore wind power operations in shallow waters, thereby providing a bottom structure and bottom-sitting barge that can reduce costs.

[0008] In order to solve the above technical problems, the present invention provides a bilge structure suitable for being connected under a hull, and the bilge structure comprises at least a plurality of ballast tanks.

[0009] The bilge structure comprises a shell, a plurality of partition structures are arranged in the shell, and the partition structures divide the shell into a plurality of compartments, and at least part of the partition structures are arranged at positions corresponding to the strong ribs of the hull.

[0010] The bilge structure also includes a plurality of empty compartments.

[0011] The bilge structure also includes a plurality of functional cabins.

[0012] There are multiple empty tanks and ballast tanks. The empty tank is at least arranged in the middle of the shell, and the ballast tank is at least arranged at the edge of the shell.

[0013] At the middle position of the shell, a ballast tank is arranged between two adjacent empty tanks.

[0014] At the edge position of the shell, the empty tanks and the ballast tanks are arranged alternately.

[0015] At a middle position of the shell, the volume of the empty tank is larger than the volume of the ballast tank.

[0016] At an edge position of the shell, the volume of the ballast tank is greater than the volume of the empty tank.

[0017] A stress monitoring system is provided on the bottom plate of the bottom structure, and the stress monitoring system includes a plurality of stress measuring devices, and the stress measuring devices are used to monitor the real-time stress value at the bottom plate. The stress measuring devices are communicatively connected with a control system, and the control system is used to control the drainage of the ballast tank when the real-time stress value monitored by the stress measuring device is greater than a preset stress value.

[0018] The present invention also provides a bottom-sitting barge, comprising a hull and the bilge structure connected to the hull, wherein the hull has at least two bottom layers.

[0019] A reinforcement structure is provided in the main crawler operation area on the hull.

[0020] The bow, stern and side of the ship hull are provided with anti-scouring plates.

[0021] The technical solution of the present invention has the following advantages:

[0022] 1. The bilge structure provided by the present invention can be used as an independent module and connected to similar ships or ships of the same series. Since the bilge structure can be connected under the hull of a bottom-sitting barge or a cargo ship in the prior art, the hull's depth can be increased, and the operable water depth is also greatly increased. The full-load draft of the barge is greatly improved without changing the no-load draft of the barge, so that the hull can meet the operating requirements in areas with large tidal ranges or deep waters. It only needs to modify the bottom-sitting barge or cargo ship in the prior art, and the modification cost is low and the economy is good.

[0023] 2. The bilge structure provided by the present invention also includes a plurality of empty compartments, which can ensure that the bottom-sitting barge formed by connecting the bilge structure to the hull has sufficient buoyancy when unloaded. At the same time, no excessive structures are arranged at the empty compartments, and the variability redundancy is relatively large. This can save costs on the one hand, and on the other hand, can make the bottom-sitting barge formed by connecting the bilge structure to the hull more adaptable to the seabed during the bottom-sitting process.

[0024] 3. The bilge structure provided by the present invention comprises a shell, a plurality of partition structures are arranged in the shell, and the partition structures divide the shell into a plurality of cabins. At least part of the partition structures are arranged at positions corresponding to the strong ribs of the hull. Such an arrangement makes the force on the bilge structure more concentrated, so that the bottom barge formed by connecting the bilge structure to the hull has stronger adaptability to operate on an uneven seabed.

[0025] 4. The bilge structure provided by the present invention has a volume of the empty tank that is larger than the volume of the ballast tank in the middle position of the shell. The volume of the empty tank is larger in the middle position of the shell, which can ensure that the bottom-sitting barge formed by connecting the bilge structure to the hull has sufficient buoyancy when unloaded, and the shallow draft when unloaded can make the bottom-sitting barge formed by connecting the bilge structure to the hull adapt to shallower construction water depths.

[0026] 5. The bilge structure provided by the present invention has a stress monitoring system on the bilge plate of the bilge structure, and the stress monitoring system includes a plurality of stress measuring devices, and the stress measuring devices are used for the stress values ​​at the bilge plate. The stress measuring devices are communicatively connected with the control system, and the stress measuring devices are capable of real-time monitoring and data recording of the stress values ​​at various dangerous points on the bilge plate, real-time monitoring of the strength of the bilge structure, and transmission of the monitored stress values ​​to the control system. Once the monitored real-time stress exceeds the preset stress, the control system will control the corresponding ballast tank to drain water to ensure the safety of the bottom sitting operation.

[0027] 6. The bottom-sitting barge provided by the present invention comprises a hull and a bilge structure connected to the hull, wherein the hull has at least two bottoms and the hull has a sufficiently large bearing capacity. By adding a bilge structure below the hull, the draft of the bottom-sitting barge is increased, and the operable water depth is also greatly increased. The full-load draft of the barge is greatly increased without changing the empty-load draft of the barge. The bottom-sitting barge can meet the operation requirements in areas with large tidal ranges or deep waters. Moreover, by adding a bilge structure, even if the bilge is blocked by rocks and other obstacles, and a single or multiple bilges of the bilge are damaged, the bottom-sitting barge still has sufficient buoyancy to float stably, and will not run aground. The bottom-sitting barge can be transformed from a double-bottom barge in the prior art and used for the installation of offshore wind power, with low transformation cost and good economy.

[0028] 7. The bottom-sitting barge provided by the present invention has a reinforcing structure in the main crawler operating area on the hull. Since the main crawler crane has a large weight, the load on the upper deck of the hull will be increased during the lifting process, and this load will extend through the hull to the bottom structure. Therefore, by providing a reinforcing structure in the main crawler operating area on the hull, the rigidity of the bottom-sitting barge can be increased to ensure that the barge has sufficient strength during the bottom-sitting operation.

[0029] 8. The bottom-sitting barge provided by the present invention has anti-scouring plates on the bow, stern and side of the hull, which can reduce the scouring of the hull by water during construction operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the bilge structure provided in Embodiment 1 of the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the arrangement of stress detection points in the bilge structure;

[0033] Figure 3 To include Figure 1 A schematic diagram of a bottom barge with a bilge structure is provided in FIG.

[0034] Description of reference numerals:

[0035] 1-hull; 2-bottom structure; 3-ballast tank; 4-stress detection point. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] This embodiment provides a specific implementation of the bilge structure, such as Figure 1 As shown, the bilge structure is suitable for being connected under the hull 1 , and the hull 1 in the prior art can be modified to form a new bottom-sitting barge. The bilge structure 2 includes at least a plurality of ballast tanks 3 .

[0042] The ballast tank 3 is usually connected to a valve, and water can enter the ballast tank 3 by opening the valve, thereby increasing the draft of the bottom barge formed by connecting the bottom structure 2 to the hull 1, and the operable water depth is also greatly increased. The full load draft of the barge is greatly improved without changing the empty load draft of the barge, so that the hull can meet the operating requirements in areas with large tidal ranges or deep waters. It is only necessary to modify the bottom barge or cargo ship in the existing technology, and the modification cost is low and the economy is good.

[0043] In an alternative embodiment, the bilge structure 2 further includes a plurality of empty compartments, so that the bottom-sitting barge formed by connecting the bilge structure 2 to the hull 1 has sufficient buoyancy in an empty state, and at the same time, no excessive structures are arranged at the empty compartments, and the variability redundancy is large, which can save costs on one hand, and on the other hand, can make the bottom-sitting barge formed by connecting the bilge structure 2 to the hull 1 more adaptable to the seabed during the bottom-sitting process.

[0044] In a preferred embodiment, Figure 1 As shown, all the cabins of the bilge structure are ballast tanks 3. Figure 1 It is shown that the bottom structure includes twelve ballast tanks 3 in total.

[0045] In an alternative embodiment, the bilge structure 2 further includes a plurality of functional compartments, which may specifically be a fresh water tank, a diesel tank, a domestic sewage tank, and the like.

[0046] In one embodiment, the bilge structure 2 includes a shell, and a plurality of partition structures are arranged inside the shell. The partition structures divide the shell into a plurality of compartments, and at least part of the partition structures are arranged at positions corresponding to the strong ribs of the hull 1. This arrangement makes the bilge structure bear more concentrated forces, so that the bottom barge formed by connecting the bilge structure 2 to the hull 1 has stronger adaptability to operate on uneven seabeds. Figure 1 The vertical partition structure corresponds to the strong rib position of the hull 1.

[0047] In one embodiment, there are multiple empty tanks and ballast tanks 3, and the empty tanks are at least arranged in the middle position of the shell, and the ballast tanks 3 are at least arranged at the edge position of the shell. Specifically, the edge position of the shell refers to the two sides and the front and rear ends, and the remaining positions are the middle position of the shell. Specifically, in one embodiment, the empty tanks are all arranged in the middle position and the ballast tanks 3 are all arranged at the edge position, so that the bottom barge formed by connecting the bottom structure 2 to the hull 1 can maintain balance. In other replaceable embodiments, the empty tanks are arranged both in the middle position and at the edge position, and the ballast tanks 3 are all arranged at the edge position. In another replaceable embodiment, the empty tanks are all arranged in the middle position, and the ballast tanks 3 are arranged both at the edge position and at the middle position.

[0048] In one embodiment, a ballast tank 3 is provided between two adjacent empty tanks at the middle position of the hull. When water enters the ballast tank 3 and the bottom barge formed by connecting the bilge structure 2 to the hull 1 sinks, water also enters the middle position of the bilge, ensuring that the bottom barge formed by connecting the bilge structure 2 to the hull 1 is balanced in force and sinks stably.

[0049] On the basis of the above-mentioned embodiment, in a specific embodiment, at the edge of the shell, empty tanks and ballast tanks 3 are alternately arranged. Such an arrangement can keep the force balance of the tank bottom structure 2 as much as possible.

[0050] On the basis of the above embodiments, in a specific embodiment, at the middle position of the shell, the volume of the empty tank is greater than the volume of the ballast tank 3. Specifically, at the middle position of the shell, a total of three larger empty tanks are provided. At the middle position of the shell, the volume of the empty tank is larger, which can ensure that the bottom barge formed by connecting the bilge structure 2 to the hull 1 has sufficient buoyancy under no-load conditions, and the shallow draft under no-load conditions can make the bottom barge formed by connecting the bilge structure 2 to the hull 1 adapt to a shallower construction water depth.

[0051] In one embodiment, at the edge of the shell, the volume of the ballast tank 3 is greater than the volume of the empty tank, so that the bottom barge formed by connecting the bilge structure 2 to the hull 1 can be ensured to have a larger full-load draft, thereby achieving stable bottoming.

[0052] On the basis of the above-mentioned embodiments, in a preferred embodiment, a stress monitoring system is provided on the bilge plate of the bilge structure, and the stress monitoring system includes a plurality of stress measuring devices, and the stress measuring devices are used to monitor the real-time stress value at the bilge plate, and the stress measuring devices are connected to the control system in communication, and the control system is used to control the ballast tank to drain water when the real-time stress value monitored by the stress measuring device is greater than the preset stress value. The stress measuring device can monitor and record the stress value of each dangerous point on the bilge plate in real time, monitor the strength of the bilge structure in real time, and transmit the monitored stress value to the control system. Once the monitored real-time stress exceeds the preset stress, the control system will control the corresponding ballast tank to drain water to ensure the safety of the bottoming operation. In the case where all the cabins of the bilge structure are ballast tanks, when the monitored real-time stress value is greater than the preset stress value, the ballast tanks where the stress measuring device is installed are controlled to drain water; in the case where part of the cabins of the bilge structure are ballast tanks and part are empty tanks, the ballast tanks where the stress measuring device is installed or the adjacent ballast tanks where the stress measuring device is installed are controlled to drain water. If the real-time stress value monitored by the stress measuring device is still higher than the preset stress after the ballast tank is drained, the lifting operation must be stopped quickly, and the ship should continue to sit on the bottom or float immediately according to the stress status to ensure the safety of the ship's sitting operation.

[0053] In one embodiment, the stress measuring device is a strain gauge. Figure 2 As shown, a stress detection point 4 is provided at least at the center of the bottom plate of each ballast tank and at the partition, and a stress measuring device is provided at the stress detection point 4 .

[0054] Example 2

[0055] This embodiment provides a bottom-seated barge, such as Figure 3As shown, the bottom-sitting barge comprises a hull 1 and a bilge structure 2 provided in the above embodiment connected to the hull, and the hull 1 has at least two layers of bottom.

[0056] The bottom-supported barge is used for offshore wind power operations, and is particularly suitable for the installation of wind power equipment in shallow or even extremely shallow waters. The hull 1 has at least two bottoms to ensure that the bottom-supported barge has sufficient bottom strength and ensures the safety of the bottom-supported construction. The hull 1 can be a double-bottomed barge in the prior art, which has a sufficiently large bearing capacity.

[0057] However, the original ship type in the prior art has a limited depth, and when the water level reaches the full-load draft, the ship must be lifted and stopped. Therefore, compared with the bottom-sitting barge in the prior art, the bottom-sitting barge formed by connecting the bilge structure 2 to the hull 1 in this embodiment has a longer bottom-sitting time, thereby improving the operating efficiency. By adding the bilge structure 2 below the hull 1, the depth of the bottom-sitting barge formed by connecting the bilge structure 2 to the hull 1 is increased, and the operable water depth is also greatly increased. The full-load draft of the barge is greatly increased without changing the empty-load draft of the barge. In areas with large tidal ranges or deep waters, the bottom-sitting barge formed by connecting the bilge structure 2 to the hull 1 can meet the operating requirements, and by adding the bilge structure 2, even if the single or multiple cabins of the bilge are damaged after the bilge is leaked by obstacles such as rocks, the bottom-sitting barge formed by connecting the bilge structure 2 to the hull 1 still has sufficient buoyancy to float stably, and will not run aground. The bottom barge formed by connecting the bottom structure 2 to the hull 1 can be transformed from a double-bottom barge in the prior art and used for the installation of offshore wind power, with low transformation cost and good economy.

[0058] Specifically, the bilge structure 1 can be welded to the double-bottom barge in the prior art to form a new bottom-sitting barge.

[0059] In one embodiment, a reinforcement structure is provided in the main crawler operation area on the hull 1. Since the main crawler crane has a large weight, the load on the upper deck of the hull 1 will be increased during the lifting process, and the load will extend to the bottom structure 2 through the hull 1. Therefore, by providing a reinforcement structure in the main crawler operation area on the hull 1, the rigidity of the bottom-seated barge can be increased, ensuring that the barge has sufficient strength during the bottom-seating operation and ensuring that the load deformation of the entire ship is within a controllable range.

[0060] Specifically, the reinforcement structure is a roadbed box arranged on the hull 1. In other replaceable embodiments, the reinforcement structure may be a reinforcing rib arranged on the hull 1, etc.

[0061] During the construction process, the bottom of the ship is affected by the tide and is scoured. In order to reduce the scouring effect of the water flow on the hull 1 during the construction process, in one embodiment, anti-scouring plates are provided at the bow, stern and side of the hull 1 where they contact the mud surface.

[0062] The bottom-supported barge provided in this embodiment has the following advantages:

[0063] (1) High safety when sitting on the bottom. The newly added bottom structure 2 is in contact with the soil layer as the bottom of the ship. This layer has sufficient strength. If a single cabin or even multiple cabins are "broken" after the bottom of the ship is blocked by obstacles such as rocks, the bottom-sitting barge still has sufficient buoyancy and stability to float, and the barge will not be left in place and need rescue.

[0064] (2) The barge can sit on the bottom for a long time, which improves the efficiency of construction work. The barge in the prior art has a limited depth, and when the water level reaches the full-load draft, it has to be lifted and stopped. The newly added bilge structure 2 greatly improves the full-load draft (i.e., the maximum operating draft) of the barge without changing the empty-load draft of the barge. In areas with large tidal range or deep water, the barge can still meet the operation requirements.

[0065] (3) Adaptable to a wide range of water depths. After the addition of the bilge structure 2, the barge type depth and the operable water depth have been greatly increased, thus expanding the operable water depth range of the shallow water position. For example, if the original ship type is 6.8m deep and the full load draft is 4.5m, then after adding the 3m high bilge structure 2, the barge type depth reaches 9.8m and the full load draft can reach 7.5m. It can adapt to the installation of wind turbines in positions with a water depth of 0-7.5m.

[0066] (4) Wide applicability: This barge transformation solution can transform most large barges into offshore wind power installation vessels that can sit on the bottom for construction. The transformation cost is low and the effect after transformation is significant.

[0067] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A bilge structure for use in a bottom-sitting barge for offshore wind power operations, characterized in that: The bilge structure (2) can be used as an independent module, suitable for being connected under the hull (1), the bilge structure (2) comprises a shell, a plurality of partition structures are arranged in the shell, the partition structures divide the shell into a plurality of cabins, at least part of the partition structures are arranged at positions corresponding to the strong ribs of the hull (1), and the plurality of cabins at least comprise a plurality of ballast tanks (3); A stress monitoring system is provided on the bottom plate of the bilge structure, the stress monitoring system comprising a plurality of stress measuring devices, the stress measuring devices being used to monitor the real-time stress value at the bottom plate of the bilge, the stress measuring devices being communicatively connected with a control system, the control system being used to control the ballast tank (3) to drain water when the real-time stress value monitored by the stress measuring device is greater than a preset stress value; The bilge structure also includes a number of empty compartments; The empty tank and the ballast tank (3) are provided in plurality, the empty tank is at least arranged in the middle of the shell, and the ballast tank (3) is at least arranged at the edge of the shell; A ballast tank (3) is arranged between two adjacent empty tanks at a middle position of the shell; At the edge of the shell, the empty tanks and the ballast tanks (3) are arranged alternately; At the middle position of the shell, the volume of the empty tank is larger than the volume of the ballast tank (3); At the edge position of the shell, the volume of the ballast tank (3) is larger than the volume of the empty tank.

2. The bilge structure according to claim 1, characterized in that: The bilge structure also includes a plurality of functional cabins.

3. A bottom-supported barge, characterized in that: The invention comprises a hull (1) and a bilge structure according to any one of claims 1 to 2 connected to the hull (1), wherein the hull (1) has at least two layers of bottom.

4. The bottom-supported barge according to claim 3, characterized in that: A reinforcement structure is provided in the main crawler operating area on the hull (1).

5. The bottom-supported barge according to claim 3, characterized in that: The bow, stern and side of the hull (1) are provided with anti-scouring plates.

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