JP6879062B2 - Mooring structure of power generation equipment, recovery method of power generation equipment, and arrangement method of power generation equipment - Google Patents

Description

The present invention relates to a mooring structure of a power generation device, a method of collecting the power generation device, and a method of arranging the power generation device.

Patent Documents 1 to 4 disclose a technique relating to so-called ocean current power generation. According to these techniques, a power generation device equipped with a blade is installed in water, and the power generation device is operated by rotating the blade by an ocean current. The power generator needs to be placed in place in the water. Therefore, the power generator is connected to a mooring line connected to an anchor installed on the bottom of the water.

Patent Document 5 discloses a technique related to so-called offshore power generation. In this technology, a plurality of power generation facilities are floated on the ocean, and the power generation facilities are connected to each other by using an underwater cable. This underwater cable has a connection that is placed underwater.

Japanese Unexamined Patent Publication No. 2002-266743 Japanese Unexamined Patent Publication No. 2003-074455 Japanese Unexamined Patent Publication No. 2011-132943 Japanese Patent Publication No. 2014-534375 Japanese Unexamined Patent Publication No. 2015-138579

Ocean current power generation and offshore power generation systems as disclosed in Patent Documents 1 to 5 are large-scale. Therefore, it is not realistic to connect all the equipment on land with mooring cables, underwater cables, etc. and move them to the installation location. Therefore, a process of transporting the individual components constituting the power generation device to the installation location in units of the components and then connecting them at the installation location is also conceivable. However, the connecting portion may be arranged in water, and it is not easy to connect the connecting portion in water. Furthermore, for reasons such as maintenance, it is possible to recover the components placed in the water. However, since the connecting portion is arranged in water, it is not easy to perform the work of breaking the connection between the components in water.

Therefore, an object of the present invention is to provide a mooring structure of a power generation device, a recovery method of the power generation device, and a method of arranging the power generation device, which can improve the workability of the power generation device arranged in water.

One embodiment of the present invention is a mooring structure of a power generation device in which an underwater floating power generation device is moored to a support installed on the bottom of the water, and a first mooring line in which one end is connected to the support and one end for power generation. A second mooring line to be connected to the device, a connector for detachably connecting the other end of the second mooring line to the other end of the first mooring line, and one end to be detachably connected to the power generation device, and the other end It is provided with a recovery rope connected to a connector.

According to this mooring structure, the power generation device is connected to the support tool via the first mooring line, the connecting tool, and the second mooring line. Specifically, the first mooring line and the second mooring line are connected to each other by a connecting tool. Here, the other end of the recovery rope is connected to the connector, and one end of the recovery rope is detachably connected to the power generation device. Then, when the power generation device is moved above the water surface, one end of the recovery rope also moves above the water surface. On the other hand, in this state, the connector is still placed in the water. Then, by pulling one end of the recovery rope on the water surface, the connecting tool connected to the other end of the recovery rope can be lifted to the water surface. By lifting the connector to the surface of the water, at least one of the other end of the first mooring line and the other end of the second mooring line can be easily removed from the connector. If at least one of the first mooring line and the second mooring line is removed from the connecting tool, the connection state between the support tool and the power generation device is released. Therefore, according to this mooring structure, it is possible to perform the work of disconnecting the support and the power generation device on the water surface. Then, since the restrictions are significantly reduced as compared with the case where the work is performed underwater, the workability of the power generation device can be improved.

The connector may have a first connecting portion in which the other end of the first mooring rope is mechanically connected and a second connecting portion in which the other end of the second mooring rope is mechanically connected. .. According to this connecting tool, the first mooring line and the second mooring line can be mechanically connected.

The mooring structure of the power generation device, which is one embodiment of the present invention, has a first cable having one end extending toward the support, a second cable having one end electrically connected to the power generation device, and a first cable at the other end of the first cable. 2 A cable connector for detachably connecting the other end of the cable is further provided, and the cable connector may be attached to the connector. According to this mooring structure, the cable connector is attached to the connector that can be pulled up above the surface of the water. Therefore, when the work of disconnecting the first mooring cable and the second mooring cable is performed, the work of disconnecting the first cable and the second cable can also be performed. Therefore, the workability of the power generation device can be further improved.

Another embodiment of the present invention is a method of recovering a power generation device that recovers an underwater floating power generation device moored by a support installed on the bottom of the water, and is a step of moving the power generation device arranged underwater to the water surface. One step is to hold one end of the recovery rope detachably attached to the power generation device, and the other is to pull one end of the recovery rope to move the connector connected to the other end of the recovery rope to the water surface. At least one of the first mooring line, one end of which is connected to the support and the other end of which is connected to the connector, and the second mooring line, one end of which is connected to the power generator and the other end of which is connected to the connector. It has a step of removing the other end from the connector.

According to this recovery method, when the power generation device is moved above the water surface, one end of the recovery rope also moves above the water surface. Then, by pulling one end of the recovery rope on the water surface, the connecting tool connected to the other end of the recovery rope can be lifted to the water surface. By lifting the connector to the surface of the water, at least one of the other end of the first mooring line and the other end of the second mooring line can be easily removed from the connector. If at least one of the first mooring line and the second mooring line is removed from the connecting tool, the connection state between the support tool and the power generation device is released. Therefore, according to this recovery method, it is possible to perform the work of disconnecting the support and the power generation device on the water surface. Then, since the restrictions are significantly reduced as compared with the case where the work is performed underwater, the workability of the power generation device can be improved.

Yet another embodiment of the present invention is a method of arranging a power generation device for arranging an underwater floating power generation device moored to a support installed on the bottom of the water, one end of which is connected to the support installed on the bottom of the water. A step of preparing a first mooring line whose other end is located on the water, and a step of preparing a second mooring line whose one end is connected to a power generation device on the water and whose other end is located on the water. The step of connecting the other end of the 1 mooring rope and the other end of the second mooring rope using a connecting tool, and the connecting tool in which the other end of the first mooring rope and the other end of the second mooring rope are connected are underwater. Has a step of arranging in.

According to this arrangement method, the first mooring line and the second mooring line can be connected on the water surface with respect to the connecting tool arranged in the water in the operating state. Therefore, the restrictions on the connection between the support and the power generation device are significantly reduced as compared with the case where the connection work is performed underwater, so that the workability of the power generation device can be further improved.

According to the present invention, there is provided a mooring structure of a power generation device, a method of recovering the power generation device, and a method of arranging the power generation device, which can improve workability of the power generation device arranged in water.

FIG. 1 is a diagram showing a schematic configuration of an underwater floating power generation device. FIG. 2 is an enlarged view showing a connector included in the mooring structure shown in FIG. The part (a) and the part (b) of FIG. 3 are diagrams showing the main steps of the recovery method of the power generation device. The part (a) and the part (b) of FIG. 4 are diagrams showing the main steps of the recovery method of the power generation device. The part (a) and the part (b) of FIG. 5 are diagrams showing the main steps of the recovery method of the power generation device. The part (a) of FIG. 6 is a diagram showing the main steps of the recovery method of the power generation device, and the part (b) of FIG. 6 is a diagram showing the state of the connector in the part (a) of FIG. The parts (a) and (b) of FIG. 7 are diagrams showing the main steps of the method of arranging the power generation device. The parts (a) and (b) of FIG. 8 are diagrams showing the main steps of the method of arranging the power generation device. The parts (a) and (b) of FIG. 9 are diagrams showing the main steps of the method of arranging the power generation device.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted.

In the following description, the terms "upstream" or "downstream" are used with reference to water flow. Further, the word "before" means the upstream side of the water flow, and the word "after" means the downstream side of the water flow. For example, when a downwind turbine is used, blades are placed on the rear side of the pod.

The power generation system G to which the mooring structure 1 of the present embodiment is applied will be described with reference to FIG. As shown in FIG. 1, the power generation system G has a configuration in which an underwater floating power generation device 10 is moored to an anchor 21 by a mooring structure 1. That is, the power generation system G has a mooring structure 1, a power generation device 10, an anchor 21, and a power transmission cable 22.

The power generation device 10 is installed in seawater, for example, floats, and generates power by using an ocean current. The power generation device 10 includes a first pod 12A and a second pod 12B, which are a pair of pods arranged apart from each other on the left and right, and a cross beam 13 connecting the first pod 12A and the second pod 12B. A power generation turbine 14A is provided at the rear of the first pod 12A.
A first blade 16A is attached to the power generation turbine 14A. A power generation turbine 14B is provided at the rear of the second pod 12B. A second blade 16B is attached to the power generation turbine 14B. In the following description, the power generation turbines 14A and 14B will be referred to as a first turbine 14A and a second turbine 14B, respectively.

The first pod 12A rotatably supports the first turbine 14A while imparting an appropriate buoyancy to the first turbine 14A. The second pod 12B rotatably supports the second turbine 14B while imparting an appropriate buoyancy to the second turbine 14B. The first pod 12A and the second pod 12B have a cylindrical shape and have, for example, the same size and structure.

Between the first pod 12A and the second pod 12B, a cross beam 13 which is a structure connecting them extends (that is, extends so as to traverse). The cross beam 13 has a predetermined length in the front-rear direction and a predetermined thickness. The cross beam 13 has, for example, a blade shape in order to stabilize the posture of the floating power generation device 10. The left and right ends of the cross beam 13 are fixed to, for example, substantially the center of the body of the first pod 12A and the second pod 12B, respectively. The position where the cross beam 13 is fixed is not limited to the above position. The cross beam 13 may be fixed to the top or bottom of the pod, or to the front or back of the pod. The cross beam 13 may have the same cross-sectional shape in the extending direction (that is, the transverse direction), or may have a cross-sectional shape that changes in the extending direction. A cylindrical object similar to a pod may be provided in the center of the cross beam 13.

The first turbine 14A and the second turbine 14B applied to the power generation device 10 are so-called downwind type turbines. The first pod 12A and the second pod 12B float in a posture facing the direction of the ocean current. In this floating state, the rotation axes of the first turbine 14A and the second turbine 14B are maintained substantially horizontal. The first turbine 14A and the second turbine 14B may be upwind type turbines.

The power generation device 10 is connected to an anchor 21 as a support fixed to the bottom WB via a mooring structure 1. As the support tool, a sinker may be used instead of the anchor 21. The mooring structure 1 has a first mooring line 2, a pair of second mooring lines 3A and 3B, a power transmission cable 4, a connector 30, and a recovery line 7.

In the mooring structure 1, the connecting tool 30 is provided in the middle portion between the anchor 21 and the power generation device 10, so that the first mooring rope 2 and the second mooring ropes 3A and 3B have a Y shape. The power transmission cable 4 is provided along the first mooring line 2 and the second mooring line 3A, 3B, and transmits electric power from the power generation device 10 to the anchor 21.

The first mooring rope 2 is a rope body such as a wire rope. One end 2a (lower end) of the first mooring line 2 is connected to the anchor 21 by a shackle or the like. Further, one end 2a of the first mooring line 2 is connected to the anchor 21 so as to be rotatable 360 degrees. The other end 2b (upper end) of the first mooring line 2 is connected to the connector 30 by a shackle or the like.

Each of the pair of second mooring ropes 3A and 3B is a rope such as a wire rope like the first mooring rope 2. One end 3a (upper end) of each of the pair of second mooring lines 3A and 3B is connected to the power generation device 10 by a shackle or the like. The other ends 3b (lower ends) of the pair of second mooring lines 3A and 3B are connected to the connecting tool 30 by a shackle or the like. The power generation device 10 is moored at two different points by a pair of second mooring lines 3A and 3B. More specifically, the upper end (one end) of one of the second mooring lines 3A is connected to the cross beam 13 on the left side when viewed from the upstream side. The upper end (one end) of the other second mooring line 3B is connected to the cross beam 13 on the right side when viewed from the upstream side. The mooring point of one second mooring line 3A with respect to the cross beam 13 and the mooring point of the other second mooring line 3B with respect to the cross beam 13 are separated by a predetermined length in the extending direction of the cross beam 13.

A power transmission cable 4 is provided along the first mooring line 2 and the second mooring line 3A, 3B. The power transmission cable 4 transmits the electric power generated in the first turbine 14A and the second turbine 14B. More specifically, a power transmission cable 4b for transmitting the electric power generated by the first turbine 14A is provided along the second mooring line 3A, and a power transmission cable 4b for transmitting the electric power generated by the second turbine 14B is provided. Is provided along the second mooring line 3B. Each end of the power transmission cable 4b is connected to the generator in the first pod 12A and the second pod 12B. The other end of the power transmission cable 4a is connected to, for example, a repeater (or a transformer or the like) provided in the anchor 21. A power transmission cable 22 laid on the bottom WB and extending to the ground is connected to the repeater, and the electric power generated by the first turbine 14A and the second turbine 14B is transmitted to the ground through these power transmission cables 22. Will be done.

The form in which each cable is provided is not limited to the above form. For example, the power transmission cable 4 may be integrated with the power supply cable for starting. The cable connected to the first turbine 14A may be a power supply cable, and the cable connected to the second turbine 14B may be a power transmission cable. The repeater may be set on the bottom WB outside the anchor 21. Further, the power transmission cable 4 may include a communication cable for transmitting a control signal from the anchor 21 to the power generation device 10.

As shown in FIG. 2, the connector 30 mechanically connects the first mooring line 2 and the pair of second mooring lines 3A and 3B to each other. Further, the connector 30 connects the power transmission cable 4a (first cable) extending from the power generation device 10 to the power transmission cable 4b (second cable) extending from the anchor 21.

The connecting tool 30 has a thick plate-shaped connecting base 31 and a connecting rope 32 attached to the connecting base 31. The connecting base 31 includes a first connecting hole 33 (first connecting portion) for the first mooring line 2 and a pair of second connecting holes 34A, 34B (second) for the pair of second mooring lines 3A, 3B. It has a connecting part). When the connecting base 31 has a rectangular shape, the first connecting holes 33 and the second connecting holes 34A and 34B are provided at the corners of the connecting base 31, respectively. The pair of second connecting holes 34A and 34B are provided at the corners facing each other. The first connecting hole 33 is provided at another corner between the corners where the pair of second connecting holes 34A and 34B are provided. According to the arrangement of the first connecting hole 33 and the second connecting holes 34A and 34B, the force in the first mooring line 2 is connected so as to be decomposed into a pair of second mooring lines 3A and 3B, so that power generation is generated. The device 10 can be moored stably. One end of the connecting rope 32 is detachably connected to the first connecting hole 33 by a shackle S. Similarly, in the second connecting holes 34A and 34B, the other ends 3b of the second mooring lines 3A and 3B are detachably connected by the shackle S.

As described above, one end of the connecting rope 32 is connected to the first connecting hole 33 of the connecting base 31. The other end of the connecting rope 32 is connected to the other end 2b of the first mooring rope 2. Further, the connecting cable 32 has a cable holder 37 provided between one end and the other end of the connecting cable 32. In the cable holder 37, the cable connector 4c is detachably attached to mechanically hold the cable connector 4c.

Here, the connecting base 31 is further provided with a third connecting hole 36. The third connecting hole 36 is for connecting the recovery rope 7. The third connecting hole 36 is provided at another corner portion that opposes the corner portion where the first connecting hole 33 is provided.

As described above, the other end 7b (lower end) of the recovery rope 7 is connected to the connecting base 31. One end 7a of the recovery rope 7 is detachably connected to the power generation device 10. One end 7a of the recovery rope 7 is connected to a part of the power generation device 10 exposed on the water surface when the power generation device 10 is suspended on the water surface. For example, one end 7a of the recovery cable 7 may be held by a member such as a round can provided in the power generation device 10. In this case, if one end 7a of the recovery rope 7 is towed, the connector 30 can be drawn to the power generation device 10 with the round can as a fulcrum.

According to the mooring structure 1, the power generation device 10 is connected to the anchor 21 via the first mooring line 2, the connecting tool 30, and the second mooring lines 3A and 3B. Specifically, the first mooring line 2 and the second mooring lines 3A and 3B are connected to each other by a connecting tool 30. Here, the other end 7b of the recovery rope 7 is connected to the connector 30, and one end 7a of the recovery rope 7 is detachably connected to the power generation device 10. Then, when the power generation device 10 is moved above the water surface, one end 7a of the recovery cable 7 also moves to the water surface WS. On the other hand, in this state, the connector 30 is still arranged in the water. Then, if one end 7a of the recovery rope 7 on the water surface WS is towed, the connector 30 connected to the other end 7b of the recovery rope 7 can be lifted to the water surface WS. By lifting the connector 30 to the water surface WS, at least one of the other ends 3b of the second mooring lines 3A and 3B can be easily removed from the connector 30. When the second mooring lines 3A and 3B are removed from the connector 30, the state of connection between the anchor 21 and the power generation device 10 is released. Therefore, according to the mooring structure 1, the work of disconnecting the anchor 21 and the power generation device 10 can be performed above the water surface WS. Then, the restrictions on the work of disconnecting the anchor 21 and the power generation device 10 are significantly less than those in the case of performing the work in water, so that the workability of the power generation device 10 can be improved.

<Collection method>
A method of recovering the power generation device 10 from water will be described. As shown in part (a) of FIG. 3, in the state where the power generation device 10 is in operation, the power generation device 10 is arranged between the bottom WB and the water surface WS. The power generation device 10 is supported by the anchor 21 by the mooring structure 1. Further, the power generation device 10 has a function of staying at the water depth at which it should be located and a function of moving in the water depth direction. Hereinafter, the process of recovering the power generation device 10 from the water for reasons such as maintenance will be described in detail.

As shown in part (b) of FIG. 3, first, the power generation device 10 is controlled to move the power generation device 10 to the water surface WS. At this time, a part of the power generation device 10 is exposed above the water surface WS. The exposed portion includes one end 7a of the recovery rope 7.

Next, as shown in part (a) of FIG. 4, the workbench 100 is brought closer to the power generation device 10. Then, one end 7a of the exposed recovery rope 7 is held.

Next, as shown in part (b) of FIG. 4, one end 7a of the recovery line 7 held by moving the workbench 100 is towed. As the recovery rope 7 is towed, the connector 30 connected to the other end of the recovery rope 7 approaches the power generation device 10. In other words, the connector 30 approaches the water surface WS. Finally, a part of the connector 30 is exposed above the water surface WS. The recovery rope 7 may be towed by winding a winch or the like without moving the workbench 100.

Next, as shown in the part (a) of FIG. 5, the wire 105 is connected to a part of the connector 30 exposed above the water surface WS. At this time, the holding of the recovery rope 7 is not released.

Next, as shown in part (b) of FIG. 5, the wire 105 connected to the connector 30 is wound up, and the wire 106 connected to one end 7a of the recovery rope 7 is sent out. Then, the connecting tool 30 is moved further upward, and finally, the entire connecting tool 30 is lifted onto the workbench 100.

Then, as shown in the part (a) of FIG. 6, the connection between the connecting tool 30 and the first mooring line 2 is released. Specifically, as shown in part (b) of FIG. 6, the shackle S attached to the first connecting hole 33 releases the connected state. Further, the cable connector 4c is removed from the cable holder 37, and the connected state of the cable connector 4c is also released. Then, the power generation device 10 is mechanically and electrically separated from the anchor 21.

Then, the floating buoy 102 is attached to the tip 37a of the connecting rope 32 separated from the power generation device 10, and is used as a mark when the power generation device 10 is attached again. In addition, the connecting tool 30 may be arranged on the bottom of the water WB after the means for specifying the position thereof is provided.

By the above steps, the power generation device 10 placed in the water is recovered.

According to this recovery method, when the power generation device 10 is moved above the water surface WS, one end 7a of the recovery rope 7 also moves above the water surface WS. Then, if one end 7a of the recovery rope 7 is towed, the connector 30 connected to the other end 7b of the recovery rope 7 can be lifted to the water surface WS. By lifting the connector 30 to the water surface WS, the other end 3b of the second mooring lines 3A and 3B can be easily removed from the connector 30. When the second mooring lines 3A and 3B are removed from the connector 30, the state of connection between the anchor 21 and the power generation device 10 is released. Therefore, according to this recovery method, it is possible to perform the work of disconnecting the anchor 21 and the power generation device 10 on the water surface WS. Then, the restrictions on the work of disconnecting the anchor 21 and the power generation device 10 are significantly less than those in the case of performing the work in water, so that the workability of the power generation device 10 can be improved.

<Arrangement method>
Next, a method of arranging the power generation device in water will be described.

First, as shown in part (a) of FIG. 7, an anchor 21 to which one end 2a of the first mooring line 2 is connected is prepared. The anchor 21 to which the first mooring line 2 is connected may be already arranged on the bottom WB or may be arranged on the workbench 100. Here, the other end 2b of the first mooring line 2 is held on the water surface. For example, the other end 2b of the first mooring line 2 is held on the workbench 100. Further, the other end of the power transmission cable 4 provided along the first mooring line 2 is also held on the workbench 100 in the same manner. In addition, the power generation device 10 for which maintenance and the like have been completed is prepared. The power generation device 10 may be newly completed.

Next, as shown in part (b) of FIG. 7, the other end 2b of the first mooring line 2 held on the workbench 100 is connected to the connector 30. This connection work includes the work of connecting the power transmission cable 4b extending from the power generation device 10 to the power transmission cable 4a extending from the anchor 21. By this step, the power generation device 10 and the anchor 21 are mechanically and electrically connected.

Next, as shown in the part (a) of FIG. 8, the connector 30 is lifted by a crane 104 or the like. At this time, the wire of the crane 104 and the connecting tool 30 are connected by a quick releaser (not shown) or the like. The quick releaser can remotely disconnect the wire of the crane 104 and the connector 30 by pulling the operation wire extending from the main body of the releaser. Then, the connector 30 is suspended in water. After the crane is lowered to a predetermined water depth, the quick releaser is operated to release the connection between the wire of the crane 104 and the connecting tool 30 (see part (b) of FIG. 8). Finally, the power generation device 10 is controlled to move to a predetermined water depth (see FIG. 9). Through the above steps, the power generation device 10 is arranged in water.

According to this arrangement method, the first mooring line 2 and the second mooring lines 3A and 3B can be connected on the water surface to the connecting tool 30 which is arranged in water in the operating state. Therefore, since the restrictions on the work are significantly reduced as compared with the case where the connection work between the anchor 21 and the power generation device 10 is performed underwater, the workability of the power generation device 10 can be improved.

The present invention has been described in detail above based on the embodiment. However, the present invention is not limited to the above embodiment. The present invention can be modified in various ways without departing from the gist thereof.

The power generation device 10 is not limited to the case where it is installed in seawater. For example, the power generation device 10 may be arranged in fresh water.

The power generation device 10 is not limited to a configuration including a pair of power generation turbines. For example, the power generation device 10 may be configured to include one pod and a power generation turbine.

The mooring structure 1 is not limited to a Y shape as a whole. For example, the mooring structure 1 may have a V-shape as a whole. In this case, a pair of first mooring lines extend from the anchor 21, and the connecting tool 30 is connected to the upper end of each of the first mooring lines. Then, a second mooring line is connected to each connecting tool 30.

1 Mooring structure 2 1st mooring line 3A 2nd mooring line 3B 2nd mooring line 4 Transmission cable 4c Cable connector 7 Recovery line 10 Power generation device 12A 1st pod 12B 2nd pod 13 Cross beam 14A Turbine for power generation 16A 1st blade 14B Turbine for power generation 16B 2nd blade 21 Anchor 22 Power transmission cable 30 Connector 31 Connecting base 32 Connecting rope 33 1st connecting hole (1st connecting part)
34A, 34B 2nd connecting hole (2nd connecting part)
36 Third connecting hole 37 Cable holder 100 Workbench 102 Floating buoy 104 Crane 105, 106 Wire G Power generation system S Shackle WS Water surface WB Water bottom

Claims (5)

It is a mooring structure of a power generation device that moored an underwater floating power generation device to a support installed on the bottom of the water.
The first mooring line, one end of which is connected to the support,
A second mooring line, one end of which is connected to the power generator,
A connecting tool that detachably connects the other end of the second mooring rope to the other end of the first mooring rope.
One end is detachably connected to the power generator, and the other end is a recovery rope connected to the connector.
One end of the recovery rope is connected to a portion exposed on the water surface in the underwater floating power generation device.
The connector has a mode in which the other end of the first mooring rope is connected to the other end of the second mooring rope, and the other end of the first mooring rope is removed from the other end of the second mooring rope. A mooring structure for a power generator that can be switched between modes. The connector is
With the first connecting portion to which the other end of the first mooring line is mechanically connected,
The mooring structure for a power generation device according to claim 1, further comprising a second connecting portion in which the other end of the second mooring rope is mechanically connected. A first cable with one end extending toward the support,
A second cable, one end of which is electrically connected to the power generator,
A cable connector for detachably connecting the other end of the second cable to the other end of the first cable is further provided.
The mooring structure of the power generation device according to claim 1 or 2, wherein the cable connector is attached to the connector. It is a method of recovering a power generation device that recovers an underwater floating power generation device moored by a support installed on the bottom of the water.
A step of moving the power generation device placed in water to the water surface and exposing one end of a recovery rope connected to the power generation device on the water surface.
A step of detachably attaching to the power generation device and holding one end of the recovery rope exposed on the water surface.
A step of pulling one end of the recovery rope and moving a connecting tool connected to the other end of the recovery rope to the water surface.
A first mooring line with one end connected to the support and the other end connected to the connector, and a second mooring one end connected to the power generator and the other end connected to the connector. A connector for detachably connecting the other end of the second mooring rope to the other end of the first mooring rope so as to remove at least one other end of the cord from the first mooring rope is attached to the first mooring rope. A power generation device having a step of switching from a mode in which the other end of the second mooring rope is connected to the other end to a mode in which the other end of the first mooring rope is removed from the other end of the second mooring rope. Collection method. It is a method of arranging a power generation device that arranges an underwater floating power generation device moored to a support installed on the bottom of the water.
The process of preparing the power generation device in which one end of the recovery rope is detachably connected to the exposed portion on the water surface, and
A step of preparing a first mooring line whose one end is connected to the support installed on the bottom of the water and whose other end is located on the water.
A step of preparing a second mooring line whose one end is connected to the power generation device on the water and whose other end is located on the water.
The other end of the first mooring rope is removed from the other end of the second mooring rope so that the other end of the first mooring rope and the other end of the second mooring rope are connected by using a connecting tool. A step of switching from the present mode to a mode in which the other end of the second mooring rope is connected to the other end of the first mooring rope.
A step of connecting the other end of the recovery rope to the connector, and
A method for arranging a power generation device, comprising a step of arranging the connecting tool in which the other end of the first mooring rope and the other end of the second mooring rope are connected in water.

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