JP2023139672A - Device and method for manufacturing floating body structure - Google Patents

Abstract

To provide a device and a method for manufacturing a floating body structure, which can continuously carry out manufacturing and launching of a plurality of floating body structures.SOLUTION: A floating body structure C in a first region 1 is caused to float by adjusting a water level WL in the first region 1 in a state where a water gate 28 is closed, and moved to a second region 2. Then, a water level WL in the second region 2 is adjusted to be equal to a water level WL0 in an external water region 12, and then the water gate 28 is opened to enable the floating body structure C in the second region 2 to be towed toward the external water region 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a floating structure manufacturing apparatus and manufacturing method suitable for mass production of floating structures for offshore wind power generation, for example.

2. Description of the Related Art Floating structures for offshore wind power generation are conventionally known (for example, see Patent Document 1). These large floating structures are typically manufactured in offshore docks dug below sea level and launched by injecting water into the docks. In this process, operations from manufacturing one floating structure to launching it into the water are performed within the same one dock.

On the other hand, in the shipbuilding industry, the block construction method is generally adopted. This method involves building a ship by dividing the hull into multiple steel blocks, then welding them together to complete the ship.

JP2009-248792A

However, the above-mentioned conventional marine docks have the problem of being unsuitable for mass production of large floating structures, as it is difficult to manufacture the next floating structure while the floating structure is being launched. Ta. In addition, when the floating structure is made of concrete, it is preferable to minimize the number of joints between floating modules due to the difficulty of water-stopping. It was not suitable for For this reason, in order to enable the mass production of large floating structures, there has been a need for a dock (manufacturing equipment) that can continuously manufacture and launch multiple floating structures.

The present invention has been made in view of the above, and an object of the present invention is to provide a floating structure manufacturing device and manufacturing method that can continuously manufacture and launch a plurality of floating structures. .

In order to solve the above problems and achieve the objectives, a floating structure manufacturing apparatus according to the present invention is provided adjacent to a manufacturing area where floating structures are manufactured, and the manufactured floating structure can be placed. a first area consisting of a floor part, a second area provided adjacent to the first area and consisting of a floor part lower than the height of the floor part of the first area, and the second area and an external water body. and a water level adjusting device for adjusting the water level in the first region and the second region, the manufacturing device comprising: a water gate provided between the water gate and the water level adjusting device for regulating the water level in the first region and the second region, the water level in the first region being adjusted with the water gate closed. After the floating structure in the first area is floated by adjusting the floating structure and then moved to the second area, the water level in the second area is adjusted to be the same as the water level in the external water body, and then , the water gate is opened to enable the floating structure in the second region to be towed toward the external water area.

Further, the method for manufacturing a floating structure according to the present invention includes a first area that is provided adjacent to a manufacturing area where the floating structure is manufactured and is composed of a floor section on which the manufactured floating structure can be placed; a second area provided adjacent to one area and comprising a floor portion lower than the height of the floor portion of the first area; a water gate provided between the second area and an external water area; A method of manufacturing the floating structure using a water level adjustment device that adjusts the water level of the first region and the second region, the method comprising: adjusting the water level of the first region with the water gate closed; floating the floating structure in a first area; moving the floating structure from the first area to the second area; and adjusting the water level in the second area to be the same as the water level in the external water body. and then opening the water gate to enable the floating structure in the second region to be towed toward the external water area.

According to the floating structure manufacturing apparatus according to the present invention, the first area is provided adjacent to a manufacturing area for manufacturing the floating structure and is composed of a floor section on which the manufactured floating structure can be placed; a second area provided adjacent to one area and comprising a floor portion lower than the height of the floor portion of the first area; a water gate provided between the second area and an external water area; and a water level adjustment device for adjusting the water level in the second region, the manufacturing device comprising: a water level adjusting device for adjusting the water level in the second region, the floating body structure in the first region being adjusted by adjusting the water level in the first region with the water gate closed. After floating the object and moving it to the second area, the water level in the second area is adjusted to be the same as the water level in the external water area, and then the water gate is opened and the object is moved to the second area. Since the floating structure can be towed toward the external water body, it is possible to continuously manufacture and launch a plurality of floating structures, and the effect is that mass production of floating structures is facilitated. .

Further, according to the method for manufacturing a floating structure according to the present invention, a first area is provided adjacent to a manufacturing area where the floating structure is manufactured and is composed of a floor section on which the manufactured floating structure can be placed; a second region provided adjacent to the first region and comprising a floor portion lower than the height of the floor portion of the first region; a water gate provided between the second region and an external water body; A method of manufacturing the floating structure using a water level adjustment device that adjusts the water level of the first region and the second region, the method comprising: adjusting the water level of the first region with the water gate closed. Floating the floating structure in the first region by moving the floating structure from the first region to the second region, and making the water level in the second region the same as the water level in the external water body. and then opening the water gate to allow the floating structures in the second region to be towed toward the external water area, thereby facilitating the fabrication and launching of a plurality of floating structures. This has the effect of making it possible to carry out the process continuously and making mass production of floating structures easier.

FIG. 1 is a diagram showing an embodiment of a floating structure manufacturing apparatus according to the present invention, in which (1) is a plan view and (2) is a side sectional view. FIG. 2 is a diagram showing an embodiment of a method for manufacturing a floating structure according to the present invention.

EMBODIMENT OF THE INVENTION Below, embodiment of the manufacturing apparatus and manufacturing method of the floating structure based on this invention is described in detail based on drawing. Note that the present invention is not limited to this embodiment.

As shown in FIG. 1, a floating structure manufacturing apparatus 10 according to the present embodiment includes a factory 16 installed on land 14 of a quay of a port facing the open sea 12 (external water area), and a launching dock 18. It consists of

The factory 16 is a manufacturing area where floating structures are manufactured. The manufacturing target of this embodiment is assumed to be a semi-sub type large floating structure for offshore wind power generation. In addition, when mass-producing concrete floating structures, the factory 16 is equipped with equipment used in the slip form construction method (for example, mobile molding machines, It is preferable to arrange a steel formwork).

The launching dock 18 consists of Area 1 located on the factory side and Area 2 located on the sea side. Area 1 is a first area that is provided adjacent to factory 16 and includes a horizontal floor 20 (floor section) on which manufactured floating structures can be placed. The height of the horizontal floor 20 is the same as the floor of the factory 16. Area 2 is a second area that is provided adjacent to area 1 and includes a floor 22 (floor portion) that is lower in height than the horizontal floor 20 of area 1. A horizontal floor 20 in area 1 and a floor 22 in area 2 are connected by a slope 24. Area 2 is filled with seawater in advance and has a water depth h that is sufficient to float the floating structure to be manufactured.

As shown in FIG. 1 (1), embankments 26 of a predetermined height are provided on the left and right sides of the launching dock 18, and gates 28 that can be opened and closed are provided at the front and rear of the launching dock 18. , 30 are provided. The width B in the left-right direction is larger in area 2 than in area 1. The connecting part between Area 1 and Area 2 gradually widens in plan view, and the embankment body 26 extends approximately in the front-rear direction along the sides of Areas 1 and 2 in plan view, and extends left and right on the sea side in front. It is bent inward and connected to a doorstop on the side of the gate 28. In this way, the launching dock 18 is surrounded on all sides by the embankment body 26 and the gates 28 and 30. The launching dock 18 may be constructed by digging an area between the factory 16 on the quay and the sea 12 where the launch is planned, or it may be constructed by forming an area surrounded by a continuous wall from the quay to the sea side. It may be constructed by

The sea side gate 28 (sluice gate) is installed at the boundary between the open sea 12 and the area 2, and is configured with a flap type gate used, for example, at a shipyard. When the gate 28 opens, the open sea 12 and area 2 are placed in communication, and when the gate 28 is closed, the open sea 12 and area 2 are placed in a disconnected state. The gate 30 on the factory side is composed of a pair of left and right side gates that can be moved in the left and right direction, and is installed at the boundary between the factory 16 and the area 1. When the gate 30 opens, the factory 16 and area 1 are placed in communication, and when the gate 30 is closed, the factory 16 and area 1 are disconnected.

The manufacturing equipment 10 includes a water level adjustment device 32 that adjusts the water level WL of the launching dock 18, a transportation device 34A used for transporting materials in area 1 and attaching equipment to floating structures, and a transport device 34A used for transporting materials in area 1 and attaching equipment to floating structures, and transporting equipment from the factory 16 to area 1. The floating structure further includes a moving device 34B for horizontally moving the floating structure toward.

The water level adjustment device 32 can be configured using, for example, a water injection device that injects water from the sea 12 into the launching dock 18 and a drainage device that drains seawater in the launching dock 18 to the outside. . As the water injection device and the drainage device, for example, a device that supplies and drains seawater sucked in by a pump can be used. The water level WL of the launching dock 18 is raised by injecting water into the launching dock 18 with a water injection device, and the water level WL of the launching dock 18 is lowered by discharging water from the launching dock 18 with drainage. Is possible. Note that it may further include a water level detection device that detects the water level WL in the launching dock 18, and a control device that stops the operation of the water injection device or the drainage device according to the detected water level WL in the launching dock 18. Further, the water level adjusting device of the present invention is not limited to this, and any device may be used as long as it is capable of adjusting the water level WL in the launching dock 18.

Further, the transport device 34A is a tower crane used for installing, for example, floating offshore wind turbines and blades. The moving device 34B may be a known moving device such as a device such as an IP-CCV (Individual Pushing Caisson Carrier Vehicle), a device using air casters and a jack or winch, or a device using a belt conveyor, endless tracks, wheels, etc. Can be used. In this case, the section from the floor of the factory 16 to the horizontal floor 20 of area 1 is equipped with IP-CCV, air casters, rails (grooves) for wheels, belt conveyors, etc. so that the above-mentioned moving devices can be utilized. It is advisable to install the device in advance. In addition, the example of FIG. 1(1) shows a configuration in which a groove is provided in the horizontal floor 20 as the moving device 34B.

Next, a method for manufacturing a floating structure according to this embodiment will be described with reference to FIG. In this embodiment, a floating structure is manufactured by the following steps S1 to S5 and then launched.

First, in step S1, it is assumed that the water level WL of the launching dock 18 is lower than the horizontal floor 20 of the area 1, as shown in FIG. 2(1). The floating structure C manufactured in the factory 16 is moved horizontally and temporarily placed on the horizontal floor 20 in area 1 of the launching dock 18. The number of floating structures C to be temporarily placed in area 1 can be set as appropriate depending on the space in area 1 (two in the example shown). For example, the above-mentioned moving device can be applied to the moving device that horizontally moves the floating structure C.

The floating structure C of this embodiment is assumed to be a structure consisting of a plurality of concrete columnar floating bodies C1 that are horizontally connected to each other. A wind turbine tower C2 is provided at the top of the central floating body C1, and a nacelle and blades (not shown) are provided at the upper end of the wind turbine tower C2. Symbol C3 indicates the outer diameter circle of the blade. The work of installing the superstructure and equipment (for example, the tower C2, nacelle, blade, mooring device, etc.) of the floating structure C may be performed in the factory or in this area 1.

In the next step S2, as shown in FIG. 2 (2), all the gates 28 and 30 are closed, and seawater is injected into the launching dock 18 from the outside until the floating structure C floats in area 1, and the launching dock 18 is then launched. The water level WL of the dock 18 is raised. By doing this, the floating structure C is launched.

In the next step S3, as shown in FIG. 2(3), the floating structure C in area 1 floating in seawater is moved to area 2. For this movement, a method of towing the floating structure C using a winch, a wire, a ship, or the like can be applied. After moving to area 2, fitting work for the floating structure C may be carried out as required.

In the next step S4, as shown in FIG. 2(4), seawater is discharged from the launching dock 18 to the outside until the water level WL in area 2 becomes the same level as the water level WL0 in the open sea. After the drainage of area 1 is completed, area 1 becomes ready for the work in step S1, so the next floating structure C from the factory 16 can be temporarily placed in area 1. It becomes possible to install the superstructure and fittings.

In the next step S5, as shown in FIG. 2(5), the gate 28 facing the open sea 12 is opened, and the floating structure C in the area 2 is made ready to be towed towards the open sea 12. Thereafter, the floating structure C is towed by a work boat or the like (not shown).

In this way, according to the present embodiment, by utilizing the two areas 1 and 2 with different floor heights to inject and discharge seawater, it is possible to fabricate and launch multiple floating structures. It is possible to do this continuously. Unlike normal dock use, the fabricated floating structure can be smoothly and quickly transported and launched without stopping the production of other floating structures in order to launch one floating structure. . This embodiment is suitable for mass production of large floating structures for which it is difficult to use cranes or lifts.

As explained above, according to the floating structure manufacturing apparatus according to the present invention, the first floor section is provided adjacent to the manufacturing area where floating structures are manufactured, and includes a floor section on which the manufactured floating structure can be placed. a second region provided adjacent to the first region and comprising a floor portion lower than the height of the floor portion of the first region; and a second region provided between the second region and an external water body. A manufacturing apparatus comprising a water gate and a water level adjustment device that adjusts the water level in the first region and the second region, the manufacturing device comprising: a water gate, and a water level adjusting device that adjusts the water level in the first region and the second region; After floating the floating structure in one area and moving it to the second area, adjusting the water level in the second area to be the same as the water level in the external water area, and then opening the water gate; Since the floating structure in the second region can be towed toward the external water area, it is possible to continuously manufacture and launch a plurality of floating structures, and mass production of floating structures is facilitated. become.

Further, according to the method for manufacturing a floating structure according to the present invention, a first area is provided adjacent to a manufacturing area where the floating structure is manufactured and is composed of a floor section on which the manufactured floating structure can be placed; a second region provided adjacent to the first region and comprising a floor portion lower than the height of the floor portion of the first region; a water gate provided between the second region and an external water body; A method of manufacturing the floating structure using a water level adjustment device that adjusts the water level of the first region and the second region, the method comprising: adjusting the water level of the first region with the water gate closed. Floating the floating structure in the first region by moving the floating structure from the first region to the second region, and making the water level in the second region the same as the water level in the external water body. and then opening the water gate to allow the floating structures in the second region to be towed toward the external water area, thereby facilitating the fabrication and launching of a plurality of floating structures. It becomes possible to carry out the process continuously, which facilitates the mass production of floating structures.

As described above, the floating structure manufacturing apparatus and manufacturing method according to the present invention are useful for manufacturing large floating structures for offshore wind power generation, and are particularly suitable for mass producing floating structures. There is.

1 area (first area)
2 area (second area)
10 Floating structure manufacturing equipment 12 Open sea (external water area)
14 Land 16 Factory (manufacturing area)
18 Launching dock 20 Horizontal floor (floor)
22 Floor (floor part)
24 Slope 26 Embankment body 28 Gate (sluice gate)
30 Gate 32 Water level adjustment device 34 Transfer device 34A Transport device 34B Transfer device B Width C Floating structure h Water depth WL, WL0 Water level

Claims (2)

a first area provided adjacent to a manufacturing area where floating structures are manufactured and consisting of a floor section on which the manufactured floating structure can be placed; a second area consisting of a floor lower than the height of the floor; a water gate provided between the second area and an external water area; and a water level adjustment device that adjusts the water levels in the first area and the second area. A manufacturing device comprising:
With the water gate closed, the floating structure in the first area is floated by adjusting the water level in the first area, and then moved to the second area, and then the water level in the second area is adjusted. The floating structure is characterized in that the water level is adjusted to be the same as the water level of the external water area, and then the water gate is opened to enable the floating structure in the second region to be towed toward the external water area. Manufacturing equipment. a first area provided adjacent to a manufacturing area where floating structures are manufactured and consisting of a floor section on which the manufactured floating structure can be placed; a second area consisting of a floor lower than the height of the floor; a water gate provided between the second area and an external water area; and a water level adjustment device that adjusts the water levels in the first area and the second area. A method of manufacturing the floating structure using
floating the floating structure in the first area by adjusting the water level in the first area with the water gate closed; and moving the floating structure from the first area to the second area. adjusting the water level in the second region to be the same as the water level in the external water body, and then opening the water gate so that the floating structure in the second region can be towed toward the external water body. A method for manufacturing a floating structure, comprising the steps of:

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