JPWO2013084878A1 - Parts transfer method for floating wind turbine equipment - Google Patents

Abstract

A method of conveying parts of a floating windmill facility in which a windmill is installed on a floating body floating on a water surface,
An attitude control step for controlling the attitude of the floating body so that the windmill is inclined;
A component moving step of moving the components of the windmill along a vertical direction between a first loading / unloading position on the tower top, nacelle or hub side of the windmill and a second loading / unloading position on the water surface side,
In the component moving step, the component is transported in a state where the windmill is inclined by the posture control step in at least a part of the component moving path between the first unloading position and the second unloading position. It is characterized by performing.

Description

  The present disclosure relates to a component conveying method for a floating wind turbine facility including a floating body floating on a water surface and a wind turbine installed on the floating body.

  In recent years, wind turbine generators have been widely used from the viewpoint of global environmental conservation. In particular, plans for installing large-scale wind power generators that are advantageous for improving power generation efficiency on the water such as on the ocean or on the lake are being promoted in various places.

  As a wind power generator installed on the water, for example, as shown in Patent Documents 1 to 4, a floating wind turbine facility in which a wind turbine is installed on a floating body floating on a water surface is known. Patent Document 4 discloses a configuration for adjusting ballast water in a column in a floating windmill facility having three columns and a windmill provided on the column in order to ensure the stability of the windmill on the floating body. Is disclosed.

  In such a floating wind power generation system, wind turbine parts are moved between the high part of the wind turbine tower, nacelle or hub, and near the water surface of a parts transport ship, etc. during maintenance, installation and dismantling. There are things to do. In that case, a lifting device such as a winch provided in a nacelle or hub of a windmill, a crane installed on a platform of a windmill, or a crane installed in a crane ship is used. For example, when parts in a nacelle are transported to a parts transport ship, the parts are suspended from the nacelle by a winch provided in the nacelle, and once placed on the platform, the crane or ship side installed on the platform is equipped. Lift the parts with a crane and move the parts from the platform to the parts carrier.

  Further, although not related to the parts conveyance of the floating windmill facility, Patent Document 5 discloses a configuration in which the windmill is transported by a transport ship with the tower inclined when the windmill is installed.

JP-A-3-57885 Japanese Patent Application Laid-Open No. 2001-165032 Japanese Patent Application Laid-Open No. 2002-188557 International Publication No. 2009/048830 Special table 2011-521820 specification

  In the above-mentioned floating type windmill equipment, when parts are transferred to and from the parts transport ship on the water, it is difficult to deliver the parts because the windmill equipment and parts transport ship swing due to the influence of waves and tidal currents. May be. In particular, since the floating wind turbine equipment is in a state where the floating body floats on the water, the floating body swings due to the influence of waves and tidal currents, and the slight swing of the floating body greatly displaces the top of the wind turbine tower. For this reason, for example, when a part is suspended from the nacelle using a winch, the part may interfere with the tower, and advanced technology is required to securely place the part on the platform. . Furthermore, when moving the parts placed on the platform to the ship side, both the windmill side and the ship side are similarly swung, causing relative displacement between them, which makes it difficult to deliver the parts.

  In addition, when moving parts of the windmill between the top of the windmill tower, a high place such as a nacelle or a hub, and the vicinity of the water surface of a parts transport ship, etc., the parts are temporarily suspended on the platform, and then the parts are removed from the platform. When moving parts to a transport ship, two steps of movement in the vertical direction and movement in the horizontal direction are required, which is not desirable from the viewpoint of work efficiency.

  In these respects, although there has been a problem with respect to component movement in a floating wind turbine facility, Patent Documents 1 to 5 do not disclose any specific method for solving these problems. For example, Patent Document 4 discloses a configuration in which the ballast water in the column is controlled so as to maintain the horizontal angle of the platform or the vertical alignment of the tower for the purpose of ensuring the stability of the wind turbine. It does not consider workability in transportation. Moreover, although patent document 5 describes the workability | operativity at the time of transport of a windmill equipment, the specific structure for moving the part located in the high place by the side of a windmill to the water surface side, such as a parts transport ship, is mentioned. No information is disclosed.

  An object of at least one embodiment of the present invention is to provide a floating body that can improve workability in parts transportation between a high place such as a tower top of a windmill, a nacelle or a hub, and the vicinity of the water surface of a parts transportation ship or the like. It is to provide a method for conveying parts of wind turbine equipment.

  According to at least one embodiment of the present invention, there is provided a component conveying method for a floating wind turbine facility, wherein the wind turbine is installed on a floating body that floats on a water surface. The wind turbine components are vertically arranged between an attitude control step for controlling the attitude of the floating body, a first loading / unloading position on the tower top, nacelle or hub side of the wind turbine, and a second loading / unloading position on the water surface side. A component moving step of moving along the component, wherein in the component moving step, at least a part of a component moving path between the first loading / unloading position and the second loading / unloading position is performed by the posture control step. The parts are transported in a state where the windmill is inclined.

  According to the parts conveying method of the floating wind turbine facility, the part moving path between the first loading / unloading position on the tower upper part, the nacelle or the hub side and the second loading / unloading position on the water surface side of the parts transport ship, etc. At least in part, the parts are transported in a state where the windmill is inclined by utilizing the characteristic that the floating body itself can swing. This ensures a sufficient separation between the component and the tower when moving the component in the vertical direction, so that the component can be prevented from interfering with the tower even if the windmill fluctuates due to waves or tidal currents. Can improve workability. In addition to moving the parts in the vertical direction with the windmill tilted, in addition to moving in the vertical direction from the high place to the low place, the parts moving away from the tower base of the windmill in the horizontal direction, that is, the parts transport ship Therefore, it is possible to improve the work efficiency in moving parts because it also serves as a movement in the direction of approaching the second unloading position.

In some embodiments, in the component moving step, the component is directly transferred between the second unloading position and the first unloading position in a component transport ship that floats on the water surface away from the floating body. To do.
Accordingly, the parts can be moved from the first loading / unloading position to the second loading / unloading position without temporarily placing the parts on the platform of the windmill, so that the parts delivery work can be made more efficient and the working time can be shortened.

In some embodiments, the floating body includes a first column on which the windmill is installed, a second column connected to the first column, and each vertex of a virtual plan view triangle formed with the first column and a second column. 3 columns and a pair of connecting portions connecting the first column to the second column and the third column respectively, and in the posture control step, an angle bisector formed by the pair of connecting portions And the wind turbine is inclined toward the second column and the third column.
In general, the water area surrounded by a pair of connecting parts has less waves and tidal currents than other water areas, so tilting the floating body toward the second and third columns can cause the windmill to swing when the floating body is tilted. Therefore, it is possible to stably move the parts.

In some embodiments, the connecting portion is a lower hull, and at least one of the first column, the second column, the third column, or the pair of lower hulls has a different position in the extending direction of each lower hull. A plurality of ballast chambers are provided, and in the posture control step, the amount of ballast water in each of the plurality of ballast chambers is adjusted to tilt the windmill.
For example, if a ballast chamber consisting of one space is provided for each of three columns, the buoyancy of the floating body must be adjusted by ballast water adjustment at three separate points (three columns), and the inclination angle of the windmill is reduced. It becomes difficult to adjust. On the other hand, in this embodiment, a plurality of ballast chambers are provided at different positions in the extending direction of the lower hull, and the amount of ballast water in these ballast chambers is adjusted respectively. A weight distribution can be formed, and the inclination angle of the windmill can be adjusted with high accuracy. In addition, since the ballast water amount in each of the plurality of ballast chambers provided in the lower hull is adjusted, it is possible to prevent the ballast water from being biased and to perform highly reliable posture control.

In some embodiments, the floating body supplies and discharges the ballast water supply unit and the ballast water discharge unit for supplying and discharging the ballast water to each ballast chamber, and supplying and discharging air to each ballast chamber. An air supply / discharge unit, a ballast water supply unit and a ballast water supply unit for adjusting the supply amount and discharge amount of the ballast water, and the air supply / discharge unit, respectively. An air amount adjusting unit that adjusts an air supply amount and an exhaust amount, and in the posture control step, the ballast water amount adjusting unit and the air amount adjusting unit are operated to respectively control the ballast water amounts in the plurality of ballast chambers. Adjust.
Thus, by operating the ballast water amount adjusting unit provided in the ballast water supply unit and the ballast water discharging unit and the air amount adjusting unit provided in the air supply / discharge unit, the ballast water and air in each ballast chamber are operated. Can be adjusted with high accuracy.

In some embodiments, in the posture control step, the ballast water amount adjusting unit and the air amount adjusting unit are remotely operated.
Thereby, it becomes possible to incline a windmill also in a remote place, and the further workability | operativity can be aimed at.

In some embodiments, the method further includes a monitoring step of monitoring a level of ballast water in each ballast chamber or a flow rate of the ballast water supplied to each ballast chamber, and the posture control step includes a monitoring result of the monitoring step. Based on the above, the amount of ballast water in each of the plurality of ballast chambers is adjusted so that the set liquid level of each ballast chamber in which the floating body assumes a target posture is realized.
In this way, the liquid level of the ballast water in each ballast chamber or the flow rate of the ballast water supplied to each ballast chamber is monitored, and a set liquid level in each ballast chamber in which the floating body assumes the target posture is realized. By adjusting the amount of ballast water in each of the ballast chambers, the wind turbine can be accurately tilted so as to have a desired tilt angle.

In some embodiments, a posture detection step for detecting an actual posture of the floating body, a posture comparison step for comparing the actual posture of the floating body with a target posture, and a comparison result in the posture comparison step are output. A comparison result output step.
In this way, by comparing the actual posture of the floating body with the target posture and outputting the comparison result, the windmill can be reliably tilted to a desired tilt angle based on the comparison result.

In some embodiments, in the posture detection step, the actual posture of the floating body is detected using at least one of a gyroscope or an inclinometer.
This makes it possible to accurately control the attitude of the windmill with a simple configuration.

In some embodiments, based on a posture detection step for detecting an actual posture of the floating body, a posture comparison step for comparing the actual posture of the floating body with a target posture, and a comparison result in the posture comparison step. And a set liquid level correcting step for correcting the set liquid level of each ballast chamber in the posture control step.
Thus, the inclination angle of the windmill can be set more accurately by comparing the actual posture of the floating body with the target posture and correcting the set liquid level in each ballast chamber based on the comparison result.

In some embodiments, in the monitoring step, a liquid level gauge provided in each ballast chamber is used to monitor the liquid level of the ballast water.
This makes it possible to accurately control the attitude of the windmill with a simple configuration.

In some embodiments, in the monitoring step, the flow rate of the ballast water supplied to each ballast chamber using a flow meter provided in a ballast water supply unit for supplying the ballast water to each ballast chamber. To monitor.
Thus, by monitoring the flow rate of supplying ballast water to each ballast chamber, the amount of ballast water in each ballast chamber can be adjusted appropriately.

In some embodiments, the apparatus further includes a posture returning step of adjusting the amount of ballast water in the plurality of ballast chambers to erect the windmill after the component conveying step.
Thereby, it can return to the normal driving | running | working of a windmill smoothly.

In some embodiments, a plurality of target postures of the floating body are set, and in the posture control step, the amount of ballast water in the ballast chamber is adjusted so as to become one target posture among the plurality of target postures. .
In this way, by setting a plurality of target postures in advance, it becomes possible to easily select the most appropriate target posture according to the parts movement conditions such as the ambient environment of the windmill and the specifications of the parts transport ship, Workability can be further improved.

In some embodiments, in the posture control step, an angle formed by the tower of the wind turbine with respect to a vertical direction is larger than 0 degree and not larger than 15 degrees.
In this way, by tilting the windmill so that the angle formed by the tower of the windmill with respect to the vertical direction is greater than 0 degrees and within a range of 15 degrees or less, while improving workability in moving parts, The tilted attitude of the windmill during movement can be stably maintained.

  According to at least one embodiment of the present invention, the wind turbine is inclined in at least a part of a component moving path between the first unloading position on the tower upper portion, the nacelle or the hub side and the second unloading position on the water surface side. Since the parts are transported in the state of being moved, the separation between the moving parts and the tower is sufficiently ensured, and even if the windmill fluctuates due to waves or tidal currents, the parts can be prevented from interfering with the tower. As a result, workability can be improved. In addition to moving the parts in the vertical direction with the windmill tilted, in addition to moving in the vertical direction from the high place to the low place, the parts moving away from the tower base of the windmill in the horizontal direction, that is, the parts transport ship Therefore, it is possible to improve the work efficiency in moving parts because it also serves as a movement in the direction of approaching the second unloading position.

It is a perspective view showing the state where the windmill equipment in one embodiment of the present invention is moored on the sea. It is the side view which visually recognized the windmill equipment of FIG. 1 from the side. It is a figure explaining the component structural example which comprises a windmill. It is a top view which shows the state which inclined the windmill in one Embodiment of this invention. It is a top view which shows the structural example of the lower hull and column in one Embodiment of this invention. It is a side view which shows the structural example of the lower hull and column in one Embodiment of this invention. Drawing 7 (a)-(e) is a figure showing the parts conveyance procedure of floating body type windmill equipment in one embodiment. Fig.8 (a)-(d) is a figure which shows the components conveyance procedure of the floating-type windmill equipment in other embodiment. FIG. 9A and FIG. 9B are diagrams illustrating a component conveying procedure of the floating wind turbine facility according to another embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described below as the embodiments or shown in the drawings as the embodiments are not intended to limit the scope of the present invention. It is just an example.

Hereinafter, after describing the floating wind turbine facility 1 that is an object of the component conveying method according to the embodiment of the present invention, the component conveying method will be described.
In the following description, the floating windmill facility 1 provided on the ocean is illustrated, but the installation location of the floating windmill facility 1 is not limited to the ocean, and may be on a lake or river. Any may be sufficient. 1 to 8 show a floating wind turbine facility 1 having a semi-sub floating body 10 as an example of the floating wind turbine facility 1.

FIG. 1 is a perspective view showing a state in which a floating wind power generator according to an embodiment of the present invention is moored on the sea. FIG. 2 is a side view of the floating wind power generator of FIG. 1 viewed from the side.
As shown in FIGS. 1 and 2, the floating wind turbine generator 1 includes a floating body 10 that floats on a water surface, and a windmill (wind power generator) 2 that is erected on a platform 9 provided on the floating body 10. ing.

  In one embodiment, the windmill 2 includes at least one blade 3 that rotates in response to wind, a hub 4 to which the blade 3 is attached, a nacelle 6 to which the hub 4 is rotatably attached, and a tower that supports the nacelle 6. 8. The nacelle 6 may be capable of yaw turning with respect to the tower 8. Normally, the nacelle 6 turns so that the blade 3 is oriented to the windward side according to the wind direction. Then, the blade 3 that receives the wind rotates to generate power by the generator. A specific configuration example in the nacelle 6 will be described later.

  In one embodiment, the floating body 10 has three columnar columns 12, 14, 16 arranged at the vertex positions of a virtual triangle in plan view, and is a long length that connects the first column 12 and the second column 14. And a long second lower hull 22 that connects the first column 12 and the third column 16 to each other. The floating body 10 is formed in a substantially V shape in plan view by the three columns 12, 14, 16 and the two lower halves 20, 22. A platform 9 is provided on the upper surface of the first column 12 located in the middle of the substantially V-shape in plan view, and the windmill 2 described above is installed on the platform 9.

In addition, the first lower hull 20 and the second lower hull 22 intersect at a right angle, and the vertex position of a virtual right isosceles triangle that is symmetrical with respect to the bisector of the intersection angle between the first lower hull 20 and the second lower hull 22 In addition, the above-described three columns 12, 14, 16 may be arranged.
Further, although not particularly illustrated, a third lower hull for connecting the second column 14 and the third column 16 may be further included. Furthermore, the 1st lower hull 20 and the 2nd lower hull 22 may be connected by the beam member for reinforcement.
In the above-described embodiment, the lower hulls 20 and 22 are illustrated as connecting portions that connect the first column 12 and the second column 14, and the first column 12 and the third column 16, respectively. However, the connecting portions are limited to this. It is not a thing.

In one embodiment, the floating body 10 is formed with a ballast chamber 30 (see FIGS. 5 and 6) for storing ballast water therein, as will be described later. The ballast water is poured into the ballast chamber 30 to moor the water surface with the draft surface WL positioned above the upper surface of the lower hull 24 as shown in FIG.
Further, as shown in FIGS. 1 and 2, the floating body 10 may be arranged such that the first column 12 on which the windmill 2 is installed is located on the windward side with respect to the main wind direction W. In that case, the second column 14 and the third column 16 are arranged so as to be located on the leeward side of the main wind direction W with respect to the first column 12. Thus, by arranging the first column 12 on which the windmill 2 is installed so as to be located on the windward side of the main wind direction W, the stability of the windmill 2 that is inclined to the rear side under the wind load is improved. Can be raised.
Further, as shown in FIG. 2, a plurality of mooring lines 25 connected to an anchor 26 fixed to the water bottom E may be connected to the floating body 10 in a catenary shape so as to draw a suspension curve. In that case, the floating body 10 is anchored on the sea by the anchor 26 and the mooring line 25, resisting the drifting force and the rotational moment acting on the floating body 10.

FIG. 3 is a diagram for explaining an example of the configuration of components constituting the wind turbine.
As shown in FIG. 3, in one embodiment, the wind turbine 2 includes a rotating shaft 61 coupled to the hub 4, a generator 66 that generates electric power, and a drive train that transmits the rotational energy of the rotating shaft 61 to the generator 66. 63 is included. In the figure, as an example, the drive train 63 and the generator 66 are arranged in the nacelle 6, but at least one of them may be arranged on the tower 8 side.

The rotating shaft 61 rotates together with the rotor 5 composed of the blade 3 and the hub 4. The hub 4 may be covered with a hub cover 4a. Further, the rotating shaft 61 is rotatably supported by the nacelle 6 via a pair of bearings 62.
The drive train 63 includes a hydraulic pump 64 attached to the rotary shaft 61 and a hydraulic motor 65 connected to the hydraulic pump 64 via a high pressure oil line and a low pressure oil line. The hydraulic pump 64 is driven by the rotating shaft 61 to increase the pressure of the hydraulic oil and generate high-pressure hydraulic oil (pressure oil). The pressure oil generated by the hydraulic pump 64 is supplied to the hydraulic motor 65 via the high-pressure oil line, and the hydraulic motor 65 is driven by this pressure oil. The low-pressure hydraulic oil after having worked with the hydraulic motor 65 is returned again to the hydraulic pump 64 via the low-pressure oil line. The output shaft of the hydraulic motor 65 is connected to the input shaft of the generator 66, and the rotation of the hydraulic motor 65 is input to the generator 66. In the figure, a configuration using a hydraulic transmission is illustrated as the drive train 63. However, the drive train 63 is not limited to this configuration, and other drive trains such as a gear type gearbox may be used. A configuration in which the rotating shaft 61 and the generator 66 are directly connected without providing the 63 may be used.

  In one embodiment, the windmill 2 has an elevating device for moving each component as described above during maintenance, installation / disassembly, or the like. FIG. 3 illustrates a winch 69 disposed in the nacelle 6 as a lifting device. The winch 69 is disposed in the inner space of the nacelle 6 and hangs the component 60 on a hook attached to the tip of the wire rope to raise and lower the component 60 between the inner space of the nacelle 6 and the outside. An opening / closing part 67 is provided on the bottom surface of the nacelle 6, and this opening / closing part 67 is opened when the parts are moved. 3 illustrates the case where the opening / closing portion 67 is provided on the bottom surface of the nacelle 6, the opening / closing portion 67 includes side surfaces of the nacelle 6 (side surfaces on both sides of the rotating shaft 61 and side surfaces far from the hub 4). ) Or on the top surface. The opening / closing part 67 is closed during normal operation of the windmill 2. The winch 69 may be provided outside the nacelle 6 or may be provided on the hub 4 side. As another configuration example of the lifting device, the component 60 may be lifted or lowered by a crane provided in or outside the nacelle 6 or the hub 4. A lifting device such as a winch 69 or a crane may be provided in the upper part of the tower 8.

  As the parts conveyed by the parts conveying method in the present embodiment, for example, in addition to the rotating shaft 61, the bearing 62, each component of the drive train 63, and the generator 66 arranged in the inner space of the nacelle 6 as described above, Examples include various components such as blades 3, hub cover 4 a, nacelle 6 components, and electrical equipment such as a control panel. Of course, various parts arranged in the space above the tower 8 may be used. Also included are parts used during maintenance.

Next, with reference to FIGS. 4 to 6, a component conveying method in the present embodiment will be described.
FIG. 4 is a plan view showing a state where the windmill is inclined according to the embodiment of the present invention. FIG. 5 is a side view showing a configuration example of a lower hull and a column in one embodiment of the present invention. FIG. 6 is a plan view showing a configuration example of a lower hull and a column in one embodiment of the present invention.

  As shown in FIG. 4, in some embodiments, the parts conveying method of the floating wind turbine facility 1 includes an attitude control step for controlling the attitude of the floating body 10 so that the wind turbine 2 is inclined, and an upper portion of the tower 8 of the wind turbine 2. And a component moving step of moving the component 60 of the wind turbine 2 along the vertical direction between the first unloading position A on the nacelle 6 or the hub 4 side and the second unloading position B on the water surface WL side. Here, the 1st unloading position A illustrates the case of the nacelle 6 internal space, and the 2nd unloading position B illustrates the case of the parts transport ship 100. In the component moving step, the component 60 is transported in a state in which the windmill 2 is inclined by the attitude control step in at least a part of the component moving path between the first unloading position A and the second unloading position B. I do.

  In the attitude control step, the windmill 2 may be tilted so that the angle θ formed by the tower 8 of the windmill 2 with respect to the vertical direction is greater than 0 degree and equal to or less than 80 degrees. Further, from the viewpoint of stably maintaining the tilt posture of the windmill, the windmill 2 may be tilted so that the angle θ formed by the tower 8 of the windmill 2 with respect to the vertical direction is greater than 0 degree and equal to or less than 15 degrees.

Further, in the parts moving step, the parts 60 may be directly transferred between the second loading / unloading position B and the first loading / unloading position A in the parts transport ship 100 that is separated from the floating body 10 and floats on the water surface WL. Good. Thus, the component 60 can be moved from the first loading / unloading position A to the second loading / unloading position B without temporarily placing the component 60 on the platform 9 of the windmill 2, and the efficiency of the delivery operation of the component 60 can be achieved. , Work time can be shortened.
Of course, the second loading / unloading position B may be the platform 9, in which case the part 60 is at the second loading / unloading position B in the middle of the delivery of the parts between the first loading / unloading position A and the parts transport ship 100. It is temporarily placed on a certain platform 9.

Subsequently, the attitude control means will be described with reference to FIGS.
As shown in FIG. 5, in one embodiment, the floating body 10 includes a first column 12 where the windmill 2 is installed, and a second column 14 and a third column that form vertices of a virtual plan view triangle together with the first column 12. 16, a first lower hull 20 that connects the first column 12 and the second column 14, and a second lower hull 22 that connects the first column 12 and the third column 16. In this case, in the attitude control step, the windmill 2 may be inclined toward the second column 14 and the third column 16 along the bisector L of the angle formed by the first lower hull 20 and the second lower hull 22. . Usually, the water area surrounded by the first lower hull 20 and the second lower hull 22 has less waves and tidal currents than the other water areas, so that the floating body 10 is inclined by tilting the floating body 10 toward the second column 14 and the third column 16. The swing of the windmill 2 can be suppressed at the time of 10 tilt, and the component 60 can be moved stably. Further, when the component 60 is transported, the component transport ship 100 is brought closer to the windmill 2 from the direction in which the windmill 2 is inclined. Therefore, if the windmill 2 is inclined toward the second column 14 and the third column 16, the parts transport ship 100 may be brought closer between the first lower hull 20 and the second lower hull 22 where the mooring lines 25 are not installed. it can.

  As shown in FIGS. 5 and 6, in one embodiment, at least one of the first column 12, the second column 14, the third column 16, the first lower hull 20, or the second lower hull 22 includes each lower hull 20, A plurality of ballast chambers 30 arranged at different positions in the extending direction of 22 may be provided. The plurality of ballast chambers 30 are formed by, for example, partition walls 31 that partition the columns 12, 14, 16 and the lower hulls 20, 22. In the figure, the internal space of the first lower hull 20 and the second lower hull 22 is partitioned by a partition wall 31 orthogonal to the extending direction of each lower hull 20, 22, and a plurality of ballast chambers along the extending direction of each lower hull 20, 22. The case where 30 is arranged is illustrated. In addition, each column 12, 14, 16 has illustrated the case where the space in a column is partitioned in the vertical direction by the partition wall 31 arrange | positioned in the horizontal direction, and the some ballast chamber 30 is arranged along the vertical direction. .

In one embodiment, the following configuration may be provided as a posture control means of the floating body 10 using ballast water.
As shown in FIG. 6, as a mechanism for increasing the ballast water in the ballast chamber 30, each ballast chamber 30 is disposed in a ballast water supply path 32 and a ballast water supply path 32 for supplying ballast water, respectively. An openable / closable gate 33, an air discharge path 34 for discharging the air in the ballast chamber 30, and an air valve 35 disposed in the air discharge path 34 are provided. The ballast water supply path 32 and the gate 33 are provided below the draft surface WL before the floating body 10 sinks so that seawater can be easily poured from the outside as ballast water. When the ballast water in the ballast chamber 30 is increased, if the gate 33 and the air valve 35 are opened, the air in the ballast chamber 30 is discharged from the air valve 35 and the ballast chamber 30 is supplied from the ballast water supply path 32. Ballast water is poured into the interior.

  As a mechanism for reducing ballast water in the ballast chamber 30, each ballast chamber 30 includes a discharge pipe 36 for discharging the ballast water, a discharge valve 37 disposed in the discharge pipe 36, and a ballast chamber 30. A discharge pump 39 for discharging ballast water is provided. The pump 39 is installed in, for example, a pump chamber 40 provided in the first column 12. One end side of the discharge pipe 36 is connected to the discharge pump 39, extends over each ballast chamber 30, and further branches in each ballast chamber 30. A discharge valve 37 is provided in each pipe branched for each ballast chamber 30. The discharge amount of ballast water in each ballast chamber 30 can be adjusted by controlling the opening and closing of each discharge valve 37 independently. Each ballast chamber 30 is provided with an air pipe 41 for supplying air and an air valve (not shown) arranged in the air pipe 41. Note that a pump (not shown) for assisting air supply may be connected to the air pipe 41. When reducing the ballast water in the ballast chamber 30, if the discharge pump 39 is driven with the discharge valve 37 opened and the air valve is opened, air is sucked into the ballast chamber 30. The ballast water in 30 is discharged through the discharge pipe 36.

  The above-described ballast water increasing mechanism and ballast water reducing mechanism are merely examples, and other configurations may be adopted as long as the amount of ballast water in each ballast chamber 30 can be adjusted independently. For example, each ballast chamber 30 may be provided with a ballast water supply pipe and a discharge pipe, and an air vent pipe. Further, the ballast water can be moved between the adjacent ballast chambers 30, and the amount of ballast water can be adjusted between the plurality of ballast chambers 30.

  Further, a monitoring step of monitoring the liquid level of the ballast water in each ballast chamber 30 may be further provided. In this case, each ballast chamber 30 is provided with a liquid level gauge 45 for detecting the liquid level of the ballast water. The level gauge 45 detects the level of ballast water continuously or intermittently. The liquid level detected by the liquid level gauge 45 is sent to the controller 46. The controller 46 stores in advance the set liquid level of each ballast chamber 30 so that the floating body 10 assumes a target posture. Then, the controller 46 compares the liquid level of each ballast chamber 30 detected by the liquid level gauge 45 with the preset liquid level stored in advance so that the set liquid level of each ballast chamber 30 is realized. By controlling the above-described ballast water increasing mechanism and the ballast water reducing mechanism, the amount of ballast water in each of the plurality of ballast chambers 30 is adjusted. Thereby, it becomes possible to incline the windmill 10 correctly so that it may become a desired inclination | tilt angle. In the monitoring step, the ballast supplied to each ballast chamber 30 using a flow meter (not shown) provided in the ballast water supply path 32 instead of or in addition to monitoring the liquid level of the ballast water. The water flow rate may be monitored.

Furthermore, in another embodiment, the parts conveying method of the floating wind turbine facility 1 includes an attitude detection step for detecting an actual attitude of the floating body 10 and an attitude comparison step for comparing the actual attitude of the floating body 10 with a target attitude. A comparison result output step for outputting a comparison result in the posture comparison step may be further included.
In this case, as shown in FIG. 6, the floating body 10 is provided with a posture detection sensor 47 including a gyro or an inclinometer that detects the actual posture of the floating body 10. The posture detected by the posture detection sensor 47 is sent to the controller 46. A target posture of the floating body 10 is set in the controller 46 in advance. Then, the controller 46 compares the actual posture of the floating body 10 detected by the posture detection sensor 47 with the target posture, and outputs a comparison result. Based on this comparison result, the floating body 10 is brought close to the target posture by controlling the ballast water increasing mechanism and the ballast water reducing mechanism. In this way, by comparing the actual posture of the floating body 10 with the target posture and outputting the comparison result, the windmill 2 can be reliably tilted so as to have a desired tilt angle based on the comparison result.

  In addition to the above-described configuration, the controller 46 may further include a set liquid level correction step in which the controller 46 corrects the set liquid level of each ballast chamber 30 in the posture control step based on the comparison result in the posture comparison step. Thus, the inclination angle θ of the windmill 2 can be set more accurately by comparing the actual posture of the floating body 10 with the target posture and correcting the set liquid level of each ballast chamber 30 based on the comparison result. Can do.

  Furthermore, in the above embodiment, a plurality of target postures of the floating body 10 may be set in the controller 46. In the posture control step, the amount of ballast water in the ballast chamber 30 is adjusted so that one of the plurality of target postures becomes a target posture. In this manner, by setting a plurality of target postures in advance in the controller 46, the most appropriate target posture can be easily selected according to the component movement conditions such as the environment around the windmill 2 and the specifications of the component transport ship 100. Therefore, the workability can be further improved.

  Furthermore, in the above embodiment, in the posture control step, at least one of the gate 33, the discharge pump 39, the discharge valve 37, or the air valve 34 may be remotely operated. Thereby, it becomes possible to incline the windmill 2 also in a remote place, and the further workability | operativity can be aimed at.

  Moreover, you may further provide the attitude | position return step which adjusts the ballast water quantity in the some ballast chamber 30 and makes the windmill 2 upright after a components conveyance step. For example, the upright posture of the windmill 2 is set as the target posture in the controller 46, and in the posture return step, the ballast water increasing mechanism and the ballast water reducing mechanism are controlled so as to be in the upright posture, and the windmill 2 is normally operated. Return to the time posture. Thereby, it can return to the normal driving | operation of the windmill 2 smoothly.

  Hereinafter, with reference to FIG. 7, the component conveyance procedure of the floating-type windmill equipment which concerns on one Embodiment is explained in full detail. Drawing 7 (a)-(e) is a figure showing the parts conveyance procedure of floating body type windmill equipment in one embodiment. Here, as an example, a case where the component 60 is moved from the floating wind turbine facility 1 to the component transport ship 100 will be described.

First, as shown in FIG. 7A, in a state where the windmill 2 is upright, the parts transport ship 100 is placed behind the windmill 2 (that is, the nacelle side 6) from the water area surrounded by the first lower hull 20 and the second lower hull 22. Close. Next, as shown in FIG. 7 (b), the component 60 is suspended vertically downward by the winch 69 from the first unloading position A in the nacelle 6. At this time, when the part 60 reaches the middle of the tower 8, the winch 69 is stopped. Then, as shown in FIG. 7C, the windmill 2 is inclined toward the second column 14 and the third column 16. Specifically, the posture of the floating body 10 is controlled by adjusting the amount of ballast water in each of the plurality of ballast chambers 30 (see FIGS. 5 and 6) formed inside the floating body 10, and a desired inclination angle is set. After the wind turbine 2 is tilted until it becomes, it stops. At this time, in the state where the windmill 2 is inclined, the position of the parts transport ship 100 is finely adjusted so that the second unloading position B of the parts transport ship 100 is directly below the parts 60.
Next, as shown in FIG. 7 (d), while maintaining the state in which the windmill 2 is inclined, the part 60 is suspended to the second unloading position B of the parts transport ship 100 by the winch 69, and the part 60 is removed from the winch 69. . And as shown in FIG.7 (e), the inclination angle of the windmill 2 is adjusted and it returns to an upright state.

  In the above embodiment, the component 60 is once suspended from the first unloading position A to the middle of the tower 8, and then the windmill 2 is tilted, and further the component 60 is suspended from the middle of the tower 8 to the second unloading position B. explained. As another embodiment, as shown in FIG. 8, after tilting the windmill 2, the component 60 may be suspended from the first unloading position A to the second unloading position B.

Fig.8 (a)-(d) is a figure which shows the components conveyance procedure of the floating-type windmill equipment in other embodiment.
First, as shown in FIG. 8A, when the parts transport ship 100 is brought close to the rear of the windmill 2 with the windmill 2 standing upright, the windmill 2 is tilted as shown in FIG. 8B. At this time, in the state where the windmill 2 is inclined, the position of the parts transport ship 100 is finely adjusted so that the second unloading position B of the parts transport ship 100 is directly below the parts 60. Next, as shown in FIG. 8C, the component 60 is suspended from the first unloading position A in the nacelle 6 to the second unloading position B of the component transport ship 100 by the winch 69 while maintaining the state in which the windmill 2 is inclined. Lower and remove part 60 from winch 69. And as shown in FIG.8 (d), the inclination angle of the windmill 2 is adjusted and it returns to an upright state.
In these embodiments, when the component 60 is moved from the component transport ship 100 to the floating wind turbine facility 1, the procedure reverse to the above is performed.

  As described above, according to the above-described embodiment, among the component movement paths between the first unloading position A on the tower 8, the nacelle 6 or the hub 4 side and the second unloading position B on the water surface side. At least in part, the parts 60 are conveyed while the windmill 2 is inclined, so that a sufficient separation between the moving parts 60 and the tower 8 is secured, and the windmill 2 is swung by waves and tidal currents. Even so, it is possible to prevent the component 60 from interfering with the tower 8 and to improve workability. Further, moving the component 60 in the vertical direction with the windmill 2 tilted is not only in the vertical direction from the high place to the low place, but also in a position away from the tower base of the windmill 2 in the horizontal direction, that is, Since it also serves to move the parts transport ship 100 or the like closer to the second unloading position B, it is possible to improve work efficiency in parts movement.

  As mentioned above, although embodiment of this invention was described in detail, it cannot be overemphasized that this invention is not limited to this, In the range which does not deviate from the summary of this invention, various improvement and deformation | transformation may be performed.

  In the above-described embodiment, the configuration for adjusting the amount of ballast water in each ballast chamber 30 is exemplified as the posture control unit of the floating body 10, but the configuration of the posture control unit is not limited to this. For example, the posture control of the floating body 10 may be performed by adjusting the tensions of the mooring measures 25 connected to the floating body 10. Moreover, it is good also as a structure which controls the attitude | position of the floating body 10 by giving own weights, such as a weight and a ship, to the floating body 10 site | part on the side which inclines the windmill 2. As shown in FIG. Furthermore, it is good also as a structure which attaches a float to the floating body 10 site | part on the opposite side to the side which inclines the windmill 2, and controls the attitude | position of the floating body 10. FIG. Furthermore, it is good also as a structure which lifts the floating body 10 site | part on the opposite side to the side which inclines the windmill 2 with a crane ship etc., and controls the attitude | position of the floating body 10. FIG.

  Moreover, although the above-mentioned embodiment demonstrated in detail the floating-type windmill equipment 1 which has the semisub type | mold floating body 10, it is not limited to this, The floating-type windmill equipment 1 which has another type of floating body 10 is used. Is also applicable. For example, as shown in FIG. 9, the present invention can be applied to a floating wind turbine facility 1 ′ having a spar type floating body 80. The spar type floating body 80 includes a vertically long hollow floating body 81 and a balance weight 82 formed at the lower end of the floating body 81. Above the floating body 80, the windmill 2 is supported in a state of protruding from the water surface. In addition, a buoyancy body 83 is provided above the underwater portion of the floating body 80, and a footing 84 for reducing fluctuation of the floating body 80 is provided at the lower end of the floating body main body 81. In addition, a plurality of mooring lines (not shown) are radially arranged on the floating body 81, and the plurality of mooring measures are fixed by anchors (not shown) arranged on the bottom of the water.

  When moving parts in such a floating wind turbine facility 1 ′, as shown in FIG. 9A, first, the parts 60 are suspended by the winch 69 from the first loading position A in the nacelle 6 to the middle of the tower 8. . 9B, the windmill 2 is tilted together with the floating body 80, and the component 60 is suspended by the winch 69 from the middle of the tower 8 to the second unloading position B of the component transport ship 100. As shown in FIG. 8, the parts 60 may be suspended at a time from the first unloading position A in the nacelle 6 to the second unloading position B of the parts transport ship 100. Further, when moving the component 60 from the component transport vessel 100 to the floating wind turbine facility 1 ′, the reverse procedure is performed.

DESCRIPTION OF SYMBOLS 1 Floating windmill equipment 2 Windmill 3 Blade 4 Hub 4a Hub cover 5 Rotor 6 Nacelle 8 Tower 9 Platform 10 Floating body 12 1st column 14 2nd column 16 3rd column 20 1st lower hull 22 2nd lower hull 25 Mooring measure 26 Anchor 30 Ballast Chamber 31 Bulkhead 32 Ballast water supply path 33 Gate 34 Air discharge path 35 Air valve 36 Discharge pipe 37 Discharge valve 39 Discharge pump 40 Pump chamber 41 Air pipe 45 Level gauge 46 Controller 47 Attitude detection sensor 61 Rotating shaft 62 Bearing 63 Drive train 66 Generator 69 Winch 80 Floating body 81 Floating body body 82 Balance weight 83 Buoyant body 84 Footing 100 Parts transport ship A First loading / unloading position B Second loading / unloading position

Claims (15)

A method of conveying parts of a floating windmill facility in which a windmill is installed on a floating body floating on a water surface,
An attitude control step for controlling the attitude of the floating body so that the windmill is inclined;
A component moving step of moving the components of the windmill along a vertical direction between a first loading / unloading position on the tower top, nacelle or hub side of the windmill and a second loading / unloading position on the water surface side,
In the component moving step, the component is transported in a state where the windmill is inclined by the posture control step in at least a part of the component moving path between the first unloading position and the second unloading position. A method for conveying parts of a floating wind turbine facility.   In the component moving step, the component is directly transferred between the second loading / unloading position and the first loading / unloading position in a component transportation ship that floats on the water surface away from the floating body. Item 2. A method for conveying parts of a floating wind turbine facility according to Item 1. The floating body includes a first column on which the wind turbine is installed, a second column and a third column connected to the first column and forming each vertex of a virtual plan view triangle together with the first column, and the first column A pair of connecting portions connecting a column to each of the second column and the third column;
3. The posture control step, wherein the wind turbine is inclined toward the second column and the third column along a bisector of an angle formed by the pair of connecting portions. A method for conveying parts of a floating wind turbine facility according to claim 1. The connecting portion is a lower hull;
At least one of the first column, the second column, the third column or the pair of lower halves is provided with a plurality of ballast chambers arranged at different positions in the extending direction of the lower halves,
The component transfer method for a floating wind turbine facility according to claim 3, wherein, in the posture control step, the wind turbine is inclined by adjusting the amount of ballast water in each of the plurality of ballast chambers. The floating body includes a ballast water supply unit and a ballast water discharge unit for supplying and discharging the ballast water to each ballast chamber, and an air supply and discharge unit for supplying and discharging air to each ballast chamber. The ballast water supply unit and the ballast water discharge unit are respectively provided with a ballast water amount adjusting unit for adjusting the supply amount and discharge amount of the ballast water, and the air supply amount and discharge amount are provided with the air supply / discharge unit. An air amount adjusting unit for adjusting
5. The floating wind turbine equipment according to claim 4, wherein in the posture control step, the ballast water amount adjusting unit and the air amount adjusting unit are operated to adjust the ballast water amounts in the plurality of ballast chambers, respectively. Parts transport method.   6. The component conveying method for a floating wind turbine facility according to claim 5, wherein in the attitude control step, the ballast water amount adjusting unit and the air amount adjusting unit are remotely operated. A monitoring step of monitoring the level of ballast water in each ballast chamber or the flow rate of the ballast water supplied to each ballast chamber;
In the posture control step, based on the monitoring result in the monitoring step, the amount of ballast water in each of the plurality of ballast chambers is adjusted so that the set liquid level of each ballast chamber in which the floating body assumes a target posture is realized. The method for conveying parts of a floating wind turbine facility according to any one of claims 4 to 6. A posture detecting step for detecting an actual posture of the floating body;
A posture comparison step for comparing the actual posture of the floating body with a target posture;
The method according to claim 7, further comprising a comparison result output step of outputting a comparison result in the posture comparison step.   9. The component conveying method for a floating wind turbine facility according to claim 8, wherein in the posture detection step, the actual posture of the floating body is detected using at least one of a gyroscope or an inclinometer. A posture detecting step for detecting an actual posture of the floating body;
A posture comparison step for comparing the actual posture of the floating body with a target posture;
10. A set liquid level correcting step for correcting the set liquid level of each ballast chamber in the posture control step based on a comparison result in the posture comparison step. A method for conveying parts of the floating wind turbine facility described in the paragraph.   The floating wind turbine equipment according to any one of claims 7 to 10, wherein in the monitoring step, the liquid level gauge provided in each ballast chamber is used to monitor the liquid level of the ballast water. Parts transport method.   In the monitoring step, the flow rate of the ballast water supplied to each ballast chamber is monitored using a flow meter provided in a ballast water supply unit for supplying the ballast water to each ballast chamber. The component conveyance method of the floating-type windmill equipment as described in any one of Claims 7 thru | or 10.   The floating body type according to any one of claims 4 to 12, further comprising a posture returning step of adjusting the amount of ballast water in the plurality of ballast chambers to erect the windmill after the component conveying step. Parts transport method for wind turbine equipment. A plurality of target postures of the floating body are set,
The floating body according to any one of claims 4 to 12, wherein, in the posture control step, a ballast water amount in the ballast chamber is adjusted so as to be one target posture among the plurality of target postures. Parts transportation method for wind turbine equipment. The floating wind turbine according to any one of claims 1 to 14, wherein, in the attitude control step, an angle formed by a tower of the wind turbine with respect to a vertical direction is greater than 0 degree and 15 degrees or less. How to transfer parts of equipment.

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