JP7427843B2 - Wind propulsion system and ship equipped with it - Google Patents

Description

The present invention relates to a wind propulsion system and a ship equipped with the same.

Ships typically use fossil fuels for propulsion. Ships are equipped with high-output engines to drive thrusters, etc., and it is known that large ships consume hundreds of tons of fuel during long-distance operations. Operating these ships is extremely expensive, and the pollutant emissions from fuel consumption are a very serious problem.

In order to solve these problems, it is desirable to diversify the power sources of ships. For example, electric propulsion ship technology has been developed and applied in which part of the propulsion force is obtained from electric motors, and other technologies have been developed to obtain electricity by taking advantage of the various environmental conditions that ships experience at sea. .

Furthermore, the use of solar energy, wind power, and other natural energy sources that do not generate any exhaust gas are also attracting attention. In particular, in the case of wind power, the advantage is that the structure is simple and maintenance costs are low, in that the wind power can be easily converted into propulsive force by installing equipment such as sails on the deck.

In addition, unlike the commonly known sails, rotor equipment (for example, Magnus rotor), which can convert wind power into propulsive force in the desired direction while directly rotating using power, is installed on actual ships. ing. Such rotor equipment consists of a stator that is fixed to the deck, and a rotor that is installed in a cylindrical shape to cover the surface and top of the stator and whose rotation speed and direction are adjusted. Become.

Unlike sails, such rotor equipment can process wind power into the desired propulsion force, and has been the subject of much research and development recently. However, since the rotor equipment is a large column with a diameter of several meters and a height of several tens of meters, it is difficult to solve problems such as installation on the deck, durability due to ship movement, forward visibility interference, and control. There are still quite a number of issues that need to be improved.

The present invention was created in order to solve the problems of the prior art as described above, and the purpose of the present invention is to improve the structural performance of the rotor, facilitate manufacturing, and provide a drive for driving the rotor. The structural stability of the lower bearing section provided between the rotor and stator can be ensured, and maintenance can be facilitated. Structural stability can be ensured by reducing the weight of the end plate. An object of the present invention is to provide a wind propulsion system and a ship equipped with the same.

A wind propulsion system according to one aspect of the present invention includes a stator provided vertically on a deck, a rotor provided in a cylindrical shape so as to cover the outside of the stator, and a disk connected to the rotor. The drive unit includes a drive unit that transmits rotational power to the rotor, and a lower bearing unit that is provided at a lower part of the rotor to suppress lateral movement of the rotor, and the drive unit is a drive unit that is rotated by a motor. A shaft, a drive gear provided on the drive shaft, a driven gear that meshes with the drive gear and rotates, and a first driven shaft that is coupled to the driven gear and supports rotation of the driven gear. The rotor includes a gear box provided inside the stator, and a bearing housing that supports a second driven shaft that is connected to the first driven shaft by a coupling member and transmits rotational force to the disk, and the rotor includes: a lower rotor provided with a ring-shaped first edge panel having a space extending inwardly for a certain length at the upper end and accommodating the disk; and a lower rotor having a ring-shaped first edge panel extending inwardly for a certain length at the lower end and accommodating the disk The present invention may include an upper rotor provided with a ring-shaped second edge panel having a space, and a coupling member coupling the lower rotor, the upper rotor, and the disk.

Specifically, the bearing housing may be provided inside the top surface of the stator or outside the top surface of the stator.

Specifically, the drive shaft has an upper part rotatably coupled to the upper surface of the gear box by a first bearing, a lower part rotatably coupled to the lower surface of the gear box by a second bearing, and The bearing may be a bearing that can prevent lateral force of the drive shaft or lateral movement of the drive shaft.

Specifically, the first driven shaft has an upper portion rotatably coupled to the upper surface of the gear box by a third bearing, a lower portion rotatably coupled to the lower surface of the gear box by a fourth bearing, and the third driven shaft , 4 bearing may be a bearing that can prevent the lateral force of the first driven shaft.

Specifically, the second driven shaft is rotatably coupled to the upper surface of the stator by a fifth bearing and a sixth bearing arranged in series, and the fifth bearing prevents the axial force of the second driven shaft. The sixth bearing may be a bearing that can prevent lateral force of the second driven shaft.

Specifically, the coupling member includes a first clamp plate that supports the lower surface of the first edge panel and the lower surface of the disk, a second clamp plate that supports the upper surface of the first edge panel and the upper surface of the disk, and the The device may include a first bolt member that fixes the first and second clamp plates and the disk, and a second bolt member that fixes the first edge panel and the second edge panel.

Specifically, the coupling member includes a first bonding member provided between the first edge panel and the second clamp plate, and a second bonding member provided between the second edge panel and the second clamp plate. The device may further include a member.

Specifically, the foundation structure on land is mounted on the deck using a lifting device, the disk and the drive unit are installed on the top of the stator on land, and the lower rotor is lifted using the lifting device. the stator is accommodated therein, the lower rotor and the disk are coupled using the coupling member, and the lower rotor containing the stator is moved to the basic structure using the lifting device. The upper rotor on land is aligned with the upper part of the lower rotor mounted on the foundation structure using the lifting device, and the lower rotor is connected to the lower rotor using the connecting member. The upper rotor may be coupled.

A vessel according to other aspects of the invention may include a wind propulsion system as described above.

The wind propulsion system according to the present invention improves the structural performance of the rotor and facilitates its manufacture, ensures the structural stability of the drive unit that drives the rotor, and provides a lower part between the rotor and the stator. It is possible to ensure the structural stability of the bearing part and facilitate maintenance, and the structural stability can be ensured by reducing the weight of the end plate.

1 is a diagram illustrating a ship equipped with a wind propulsion system according to an embodiment of the present invention; FIG. FIG. 1 is a diagram for explaining a wind propulsion system according to an embodiment of the present invention. 3 is a diagram for explaining a first embodiment of the rotor shown in FIG. 2. FIG. It is a figure for explaining the unit panel which constitutes the rotor of a 1st example. 3 is a diagram for explaining a second embodiment of the rotor shown in FIG. 2. FIG. FIG. 7 is a diagram for explaining a connecting member that connects a lower rotor and an upper rotor that constitute the rotor of the second embodiment. (a) to (d) are diagrams for explaining the rotor mounting process of the second embodiment. 3 is a diagram for explaining a first example of the end plate shown in FIG. 2. FIG. FIG. 3 is a diagram for explaining a first example of the driving section shown in FIG. 2. FIG. FIG. 3 is a diagram for explaining a second embodiment of the drive section shown in FIG. 2. FIG. FIG. 3 is a diagram for explaining a third embodiment of the drive section shown in FIG. 2; 3 is a partial diagram of a wind propulsion system for explaining a first embodiment of the lower bearing section shown in FIG. 2. FIG. 13 is a diagram cut along line A-A' in FIG. 12. FIG. 14 is a diagram cut along line B-B' in FIG. 13. FIG. 3 is a partial diagram of a wind propulsion system for explaining a second embodiment of the lower bearing section shown in FIG. 2. FIG. 16 is a diagram cut along line A-A' in FIG. 15. FIG. 17 is a diagram cut along line B-B' in FIG. 16. FIG. FIG. 3 is a partial diagram of a wind propulsion system for explaining a third embodiment of the lower bearing section shown in FIG. 2; It is a figure for demonstrating the bearing unit which comprises the lower bearing part of 3rd Example. (a) to (c) are diagrams showing a state in which the bearing unit of FIG. 19 is installed on a stator. FIG. 3 is a partial diagram of a wind propulsion system for explaining a fourth embodiment of the lower bearing section shown in FIG. 2; It is a figure for demonstrating the bearing unit which comprises the lower bearing part of 4th Example. FIG. 3 is a partial diagram of a wind propulsion system for explaining a fifth embodiment of the lower bearing section shown in FIG. 2; 24 is a diagram cut along line A-A' in FIG. 23. FIG. 25 is a diagram cut along line B-B' in FIG. 24. FIG. FIG. 3 is a partial diagram of a wind propulsion system for explaining a sixth embodiment of the lower bearing section shown in FIG. 2; 27 is a diagram cut along line A-A' in FIG. 26. FIG.

The objects, particular advantages and novel features of the invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. It should be noted that in this specification, when assigning reference numbers to the constituent elements of each drawing, the same constituent elements are given the same number as much as possible even if they appear on other drawings. sea bream. In addition, when describing the present invention, if it is determined that a detailed explanation of related known techniques would unnecessarily obscure the gist of the present invention, the detailed explanation will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing a ship S equipped with a wind propulsion system 1 according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the wind propulsion system 1 according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, at least one wind propulsion system 1 according to an embodiment of the present invention is installed on the deck of a ship S, and uses power to direct rotation while directing wind power in a desired direction. It can be converted into a propulsion force, and may include a substructure 10 , a stator 20 , a rotor 30 , an end plate 40 , a disk 50 , a driving part 60 , and a lower bearing part 70 .

The foundation structure 10 may be fixedly installed on the deck, and the stator 20 may be provided on the upper part.

The stator 20 may be mounted vertically on the substructure 10 fixed on the deck and may form the axis of the rotor 30.

The stator 20 may be a cylindrical structure with a hollow interior, and the drive unit 60 may be mounted on the top.

The rotor 30 is a cylindrical structure provided so as to cover the outside of the stator 20, and has the stator 20 installed/fixed on the deck of the ship S as its axis, and is powered by a drive unit 60. It can be rotated 360 degrees. At this time, due to hydrodynamic interference between the wind around the ship S and the cylindrical rotor 30, the wind can be switched to the propulsive force of the ship S.

That is, the rotor 30 can be rotated by the power of the drive unit 60 being transmitted through the disk 50 . At this time, as the rotor 30 rotates with respect to the stator 20, which is the vertical central axis, increased pressure is generated on one side and decreased pressure/suction is generated on the opposite side, causing the rotor 30 to rotate. Positive pressure and negative pressure are generated on one side and the opposite side, respectively, and a propulsive force that is a force for moving the vessel 100 can be generated.

Furthermore, since the directions in which positive pressure and negative pressure are formed may differ depending on the direction of the rotor 30, the operating direction of the ship S can be determined by changing the direction of the rotor 30 to rotate clockwise or counterclockwise. It can also be controlled.

It goes without saying that the ship of this embodiment is not limited to generating propulsive force by driving the rotor 30, and may be combined with conventional embodiments. For example, when the ship S is mainly operated by a main engine (not shown) and a rudder, the rotor 30 can play an auxiliary role. Differently from this, the operation by the rotor 30 is performed mainly, and the operation of the ship S by the main engine and rudder can be auxiliary, and the drive of the rotor 30 can be performed as necessary in various situations. Can be done.

The rotor 30 is rotatably connected to a lower bearing section 70 provided at the bottom, and is connected to a disk 50 that receives power from a drive section 60 provided at the top of the stator 20 and applies rotational force. Good too.

The rotor 30 may have an open upper end, and an end plate 40 may be provided in the open portion.

The disk 50 may have a shape corresponding to the inner circumferential surface of the rotor 30, for example, a disk shape, and its outer circumferential surface may be fixedly connected to the inner circumferential surface of the rotor 30. The disk 50 is connected to the drive unit 60 and can receive power from the drive unit 60 to apply rotational force to the rotor 30.

The driving unit 60 may be provided on the stator 20 and connected to the disk 50. The driving unit 60 can generate power capable of rotating the rotor 30 and transmit the rotational force to the rotor 30 via the disk 50.

The lower bearing part 70 may be provided at the lower part of the rotor 30. The lower bearing part 70 may be configured to suppress lateral movement when the rotor 30 is rotated by the power of the driving part 60.

As described above, the wind propulsion system 1 of this embodiment includes a stator 20, a rotor 30, an end plate 40, a disk 50, a drive section 60, and a lower bearing section 70. The configuration will be specifically explained with reference to FIGS. 3 to 27.

The rotor 30 shown in FIG. 2 described above is a cylindrical structure with a hollow interior, and can be realized in various embodiments. 4, and the rotor 30a of the second embodiment will be explained with reference to FIGS. 5 to 7.

FIG. 3 is a diagram for explaining a first embodiment of the rotor 30 shown in FIG. 2, and FIG. 4 is a diagram for explaining a unit panel 31a constituting the rotor 30a of the first embodiment.

As shown in FIGS. 3 and 4, the rotor 30a of the first embodiment may be constructed by combining a plurality of unit panels 31a.

The unit panel 31a may be formed by pultrusion using glass fiber, carbon fiber, or various composite materials to have a certain width, length, and thickness.

The unit panel 31a may be configured to be interference-fitted with another adjacent unit panel 31a.

As shown in FIG. 4, the unit panel 31a includes a curved plate 31a1 having a curved shape in the width direction and extending in the longitudinal direction, a female connector 31a2 provided along one edge of the curved plate 31a1, and a curved plate 31a1 that has a curved shape in the width direction and extends in the longitudinal direction. It may also consist of a male connector 31a3 provided along the other edge of the face plate 31a1. Each of the curved plate 31a1, the female connector 31a2, and the male connector 31a3 forming the unit panel 31a may have the same or similar thickness.

The curved plate 31a1 may have a curved surface corresponding to the radius of the rotor 30a.

The female connector 31a2 and the male connector 31a3 may have various structures that allow the adjacent unit panels 31a to be tightly fitted together.

For example, the female connector 31a2 includes a first plate 31a21 that is bent and extends from one end of the curved plate 31a1 toward the inner side of the rotor 30a, and a first plate 31a21 that extends from the extended end of the first plate 31a21 toward the outer side of the curved plate 31a1. A second plate 31a22 that is bent and extended; a third plate 31a23 that is bent and extended from the extended end of the second plate 31a22 toward the outside of the rotor 30a; The first to fourth plates 31a24 may form an "L"-shaped fitting space 31a4 corresponding to the shape of the male connector 31a3. can be formed. At this time, the male connector 31a3 extends from the other end of the curved plate 31a1 by being bent toward the inside of the rotor 30a so as to correspond to the L-shaped fitting space 31a4 of the female connector 31a2. It may consist of a plate 31a31 and a sixth plate 31a32 that is bent and extended from the extended end of the fifth plate 31a31 toward the inside of the curved plate 31a1.

For this reason, the rotor 30a of this embodiment can be formed into a cylindrical shape with an open interior by an interference-fit coupling method using the unit panels 31a configured as described above, so it can be formed into a cylindrical shape with an internal space. The joining process can be simplified compared to the bolting joining method.

Furthermore, in the rotor 30a of this embodiment, the unit panels 31a are manufactured by pultrusion using glass fiber, carbon fiber, or various composite materials, which not only simplifies the manufacturing process and reduces manufacturing costs. , weight can be reduced.

In addition, in the rotor 30a of this embodiment, the interference-fit joint portion between the female connector 31a2 and the male connector 31a3 is thicker than the curved plate 31a1, and can naturally function as a reinforcing agent in the longitudinal direction. It can be more economical than the conventional sandwich manufacturing method in which resin or the like is injected into the interior.

FIG. 5 is a diagram for explaining a second embodiment of the rotor 30 shown in FIG. 2, and FIG. 6 shows a connection between a lower rotor 31b and an upper rotor 32b that constitute the rotor 30b of the second embodiment. 7A to 7D are diagrams for explaining the coupling member 33b, and FIGS. 7A to 7D are diagrams for explaining the process of mounting the rotor 30b of the second embodiment.

As shown in FIGS. 5 to 7, the rotor 30b of the second embodiment may have a two-stage assembly structure in which a lower rotor 31b and an upper rotor 32b are assembled by a coupling member 33b.

Each of the lower rotor 31b and the upper rotor 32b may be a hollow columnar structure, and may be formed of the same material and shape.

The lower rotor 31b may be formed in a size that can accommodate the stator 20, the disk 50, the driving part 60, and the lower bearing part 70.

A ring-shaped first edge panel 31b1 is provided at the upper end of the lower rotor 31b and extends inward by a certain length and has a space for accommodating the disk 50. At the lower end of the upper rotor 32b, a ring-shaped first edge panel 31b1 is provided which extends inward by a certain length. A ring-shaped second edge panel 32b1 having an extended space for accommodating the disk 50 may be provided.

The coupling member 33b accommodates the stator 20, which is provided with the disk 50 and the drive unit 60 on the upper part, inside the lower rotor 31b, and connects the lower rotor 31b with the first edge panel 31b1 and the disk 50 aligned. The disk 50 can be combined, and the first edge panel 31b1 of the lower rotor 31b and the second edge panel 32b1 of the upper rotor 32b can be combined with the lower rotor 31b and the disk 50 combined. .

Specifically, the coupling member 33b includes a first clamp plate 33b1 that supports the lower surface of the first edge panel 31b1 and the lower surface of the disk 50, and a second clamp plate 33b2 that supports the upper surface of the first edge panel 31b1 and the upper surface of the disk 50. A first bolt member 33b3 that fixes the first and second clamp plates 33b1 and 33b2 and the disk 50, and a second bolt member 33b3 that fixes the second edge panel 32b1 of the upper rotor 32b on the first edge panel 31b1 of the lower rotor 31b. 2-bolt member 33b4.

In the above, the first bolt member 33b3 can fix the first clamp plate 33b1, the disk 50, and the second clamp plate 33b2 to connect the lower rotor 31b and the disk 50, and the second bolt member 33b4 can connect the lower rotor 31b and the disk 50. The lower rotor 31b and the upper rotor 32b can be coupled by fixing the first clamp plate 33b1, the first edge panel 31b1, the second clamp plate 33b2, and the second edge panel 32b1.

Further, the coupling member 33b includes a first bonding member 33b5 provided between the first edge panel 31b1 of the lower rotor 31b and the second clamp plate 33b2, a second bonding member 33b5 provided between the second edge panel 32b1 of the upper rotor 32b, and the second clamp plate 33b2. It may further include a second bonding member 33b6 provided between the plate 33b2. Here, the first and second bonding members 33b5 and 33b6 may be various adhesives or adhesive films using a coating method or an adhesion method.

The mounting process for assembling the lower rotor 31b and the upper rotor 32b using the coupling member 33b as described above will be described with reference to FIGS. 7(a) to 7(d).

First, as shown in FIG. 7(a), the land-based foundation structure 10 is mounted on the deck of the ship S using the lifting device L. Here, the lifting device L may be a tower crane, a gantry crane or any suitable lifting means known to the person skilled in the art.

As shown in FIG. 7(b), the disk 50 and the drive unit 60 are installed on the upper part of the stator 20 on land, the lower rotor 31b is lifted by the lifting device L, and the stator 20 is housed inside. The lower rotor 31b and the disk 50 are coupled using the coupling member 33b.

As shown in FIG. 7C, the lower rotor 31b containing the stator 20 is mounted on the foundation structure 10 fixedly installed on the deck using the lifting device L.

As shown in FIG. 7(d), the upper rotor 32b on land is aligned with the upper part of the lower rotor 31b mounted on the foundation structure 10 using the lifting device L, and the connecting member 33b is used to The lower rotor 31b and the upper rotor 32b are combined.

As a result, the rotor 30b of this embodiment has a two-stage assembly structure in which the lower rotor 31b and the upper rotor 32b are assembled by the coupling member 33b, which simplifies the assembly process by realizing the two-stage connection structure. Instead, the weight and height requirements of the crane can be improved.

The end plate 40 shown in FIG. 2 described above is provided at the open upper end of the rotor 30, and can be realized in various embodiments. This will be explained with reference to FIG.

FIG. 8 is a diagram for explaining a first embodiment of the end plate 40 shown in FIG. 2. As shown in FIG.

As shown in FIG. 8, the end plate 40a of the first embodiment may include a disk 41a and a stiffener 42a, and may be made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP).

The disk 41a may be divided into a central region 43a and an outer region 44a. The central region 43a is a region corresponding to the open upper end of the rotor 30, and the outer region 44a may be a region extending outside the rotor 30, but is not limited thereto.

The central region 43a and the outer region 44a of the disc 41a may not be the same. For example, the central region 43a of the disc 41a may be a radial GFRP-2AXIS 10t, and the outer region 44a of the disc 41a may be a radial GFRP-UD 30t.

The stiffeners 42a are for reinforcing the central region 43a of the disc 41a, and a plurality of stiffeners 42a may be formed to extend radially from the center of the disc 41a to the edge of the central region 43a. The longitudinal direction may be GFRP-UD 10t.

In the above, the fiber direction and thickness values of the disk 41a and the stiffener 42a are merely examples, and it goes without saying that various lamination patterns and thicknesses can be applied.

As a result, the end plate 40a of this embodiment is made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP), thereby improving the structural performance of the wind propulsion system 1 by reducing the weight of the end plate 40a. be able to.

The driving unit 60 shown in FIG. 2 above is provided on the upper part of the stator 20 to generate power capable of rotating the rotor 30, and can be implemented in various embodiments, but will be described below. The drive section 60a of the first embodiment will be explained with reference to FIG. 9, the drive section 60b of the second embodiment will be explained with reference to FIG. 10, and the drive section 60c of the third embodiment will be explained with reference to FIG. I will explain.

FIG. 9 is a diagram for explaining a first embodiment of the drive section 60 shown in FIG. 2. In FIG.

As shown in FIG. 9, the drive unit 60a of the first embodiment may include a motor 61a, a gear box 62a, a drive shaft 63a, a drive gear 64a, a driven gear 65a, a driven shaft 66a, and a bearing housing 67a.

The motor 61a generates a driving force and transmits it to the gear box 62a, and may be provided inside the stator 20.

The gear box 62a is coupled to the motor 61a and includes various gears for transmitting the driving force necessary to rotate the drive shaft 63a, and may be provided inside the stator 20. Gear box 62a may be a reduction gear.

Inside the gear box 62a of this embodiment, there are a drive shaft 63a coupled to a motor 61a and rotated by the motor 61a, a drive gear 64a provided on the drive shaft 63a, and a driven gear 65a that meshes with the drive gear 64a and rotates. A driven shaft 66a coupled to the driven gear 65a and supporting rotation of the driven gear 65a may be provided.

Although the driving gear 64a and the driven gear 65a may be reduction gears with a reduction ratio of 6:1, it goes without saying that the invention is not limited to this, and reduction gears having various reduction ratios can be applied.

The driven shaft 66a may include a first driven shaft 66a1 and a second driven shaft 66a2.

In this case, the first driven shaft 66a1 is provided inside the gear box 62a, the lower part is rotatably coupled to the lower surface of the gear box 62a, the upper part penetrates the upper surface of the gear box 62a and protrudes to the outside, and the first driven shaft 66a1 is provided as a second driven shaft. It may be provided to be coupled with 66a2.

The second driven shaft 66a2 is provided outside the gear box 62a, and its lower part is coupled to the upper part of the first driven shaft 66a1 by a coupling member 68a, and its upper part passes through the upper surface of the stator 20 and is coupled to the disk 50. It may be provided as follows. The second driven shaft 66a2 is connected to the first driven shaft 66a1 and can transmit rotational force to the disk 50.

Each of the above-mentioned drive shaft 63a, first driven shaft 66a1, and second driven shaft 66a2 can be rotated by various bearings.

Specifically, an upper part of the drive shaft 63a may be rotatably coupled to the upper surface of the gear box 62a by a first bearing B1, and a lower part of the drive shaft 63a may be rotatably coupled to the lower surface of the gear box 62a by a second bearing B2.

In this embodiment, the drive shaft 63a is a shaft that rotates by the driving force of the motor 61a, and is not a shaft to which a lot of axial force is applied. In this case, the first and second bearings B1 and B2 are A bearing that can prevent lateral force or lateral movement of the drive shaft 63a, such as a self-aligning bearing, can be used.

The first driven shaft 66a1 may have an upper portion rotatably coupled to the upper surface of the gear box 62a through a third bearing B3, and a lower portion rotatably coupled to the lower surface of the gear box 62a through a fourth bearing B4.

In this embodiment, the first driven shaft 66a1 is not a shaft to which driving force is directly transmitted from the motor 61a or to which driving force is not directly transmitted to the disk 50 and to which a large amount of axial force is applied; As the third and fourth bearings B3 and B4, a bearing that can prevent lateral force of the first driven shaft 66a1, for example, a self-aligning bearing can be applied.

The second driven shaft 66a2 may be rotatably coupled to the upper surface of the stator 20 by a fifth bearing B5 and a sixth bearing B6 arranged in series.

In this embodiment, the second driven shaft 66a2 is a shaft that directly transmits driving force to the disk 50, and is not a shaft to which a large amount of axial force and lateral force is applied; The bearing B5 can be a bearing that can prevent the axial force of the second driven shaft 66a2, for example, a thrust bearing, and the sixth bearing B6 can be a bearing that can prevent the lateral force of the second driven shaft 66a2. , for example, self-aligning bearings such as spherical roller bearings (SRB) can be applied.

As described above, since a large amount of axial force and lateral force are applied to the second driven shaft 66a2, the fifth bearing B5 and the sixth bearing B6 arranged in series are attached to the stator 20 so as to be able to withstand the axial force and lateral force. It is difficult to make a strong connection.

Therefore, in this embodiment, the bearing housing 67a can be fixedly installed inside the upper surface of the stator 20 as a means for supporting the second driven shaft 66a2. The second driven shaft 66a2 passes through the bearing housing 67a, and can accommodate fifth and sixth bearings B5 and B6. By fixing the bearing housing 67a inside the upper surface of the stator 20, the second driven shaft 66a2 can withstand the axial force and the lateral force.

FIG. 10 is a diagram for explaining a second embodiment of the drive unit 60 shown in FIG. 2. In FIG.

As shown in FIG. 10, the drive unit 60b of the second embodiment includes a motor 61a, a gear box 62a, a drive shaft 63a, a drive gear 64a, a driven gear 65a, a driven shaft 66a consisting of first and second driven shafts 66a1 and 66a2, It may also include a bearing housing 67b and a coupling member 68a.

The drive unit 60b of the second embodiment is different from the drive unit 60a of the first embodiment described above in the installation position of the bearing housing 67b.

That is, the bearing housing 67b of this embodiment is provided on the outside of the top surface of the stator 20, and the bearing housing 67a of the first embodiment is provided on the inside of the top surface of the stator 20, and the other components are different from each other in the structure. are essentially the same.

Other components are structurally the same as those in the first embodiment, so the same drawing symbols are used. Therefore, in order to avoid redundant explanation, explanations regarding the same configurations will be omitted here.

FIG. 11 is a diagram for explaining a third embodiment of the drive unit 60 shown in FIG. 2. In FIG.

As shown in FIG. 11, the drive unit 60c of the third embodiment may include a motor 61c, a gear box 62c, a drive shaft 63c, a drive gear 64c, a driven gear 65c, and a driven shaft 66c.

The motor 61c generates a driving force and transmits it to the gear box 62c, and may be provided inside the upper surface of the stator 20.

The gear box 62c is connected to the motor 61c and includes various gears for transmitting the driving force necessary to rotate the drive shaft 63c, and may be provided on the outside of the upper surface of the stator 20. Gear box 62c may be a speed reducer.

Inside the gear box 62c of this embodiment, there are a drive shaft 63c coupled to the motor 61c and rotated by the motor 61c, a drive gear 64c provided on the drive shaft 63c, and a driven gear 65c that meshes with the drive gear 64c and rotates. A driven shaft 66c that is coupled to the driven gear 65c, supports rotation of the driven gear 65c, and transmits rotational force to the disk 50 may be provided.

The drive gear 64c and the driven gear 65c may be reduction gears with a reduction ratio of 6:1, but are not limited to this, and needless to say, reduction gears with various reduction ratios can be applied.

Each of the above-described driving shaft 63c and driven shaft 66c can be rotated by various bearings.

Specifically, an upper part of the drive shaft 63c may be rotatably coupled to the upper surface of the gear box 62c by a seventh bearing B7, and a lower part of the drive shaft 63c may be rotatably coupled to the lower surface of the gear box 62c by an eighth bearing B8.

In this embodiment, the drive shaft 63c is a shaft that rotates by the driving force of the motor 61c, and is not a shaft to which a large axial force is applied. In this case, the seventh and eighth bearings B7 and B8 are the shaft of the drive shaft 63c. A bearing that can prevent lateral force or lateral movement of the drive shaft 63c, such as a self-aligning bearing, can be used.

The upper part of the driven shaft 66c is rotatably coupled to the upper surface of the gear box 62c by a ninth bearing B9, and the lower part is rotatably coupled to the lower surface of the gear box 62c by a tenth bearing B10 and an eleventh bearing B11 arranged in series. may be done.

In this embodiment, the driven shaft 66c is a shaft that directly transmits driving force to the disk 50, and is a shaft to which a large amount of axial force and lateral force are applied.In this case, the tenth bearing B10 is A bearing that can prevent the axial force of the driven shaft 66c, such as a thrust bearing, can be applied, and the eleventh bearing B11 can be a bearing that can prevent the lateral force of the driven shaft 66c, such as a self-aligning bearing. can be applied.

Furthermore, since the tenth and eleventh bearings B10 and B11 are arranged in series with the driven shaft 66c on the lower surface of the gear box 62c, the thickness of the lower surface of the gear box 62c is made relatively thicker than the other surfaces. 11 bearings B10, B11 may be provided. When the thickness of the lower surface of the gear box 62c is the same as that of the conventional one, the bearing housing 67a of the first embodiment is fixedly installed inside the gear box 62c, and the 10th and 11th bearings B10 and B11 are installed. You can also do that.

As described above, the driven shaft 66c in this embodiment is a shaft that directly transmits the driving force to the disk 50, and is subjected to a large amount of axial force and lateral force. However, the axial force and lateral force are reduced by the tenth and eleventh bearings B10 and B11. In addition, since the length of the driven shaft 66c itself is short, a bearing that can prevent the lateral force of the driven shaft 66c, such as a self-aligning bearing, can be used as the ninth bearing B9.

The lower bearing part 70 shown in FIG. 2 above suppresses the lateral movement of the rotor 30 rotated by the power of the drive part 60, and can be implemented in various embodiments. The lower bearing part 70a of the second embodiment will be explained with reference to FIGS. 12 to 14, the lower bearing part 70b of the second embodiment will be explained with reference to FIGS. 15 to 17, and the lower bearing part 70c of the third embodiment will be explained. The lower bearing part 70d of the fourth embodiment will be explained with reference to FIGS. 21 to 22, and the lower bearing part 70e of the fifth embodiment will be explained with reference to FIGS. 23 to 25. The lower bearing portion 70f of the sixth embodiment will be explained with reference to FIGS. 26 and 27.

FIG. 12 is a partial diagram of the wind propulsion system 1 for explaining the first embodiment of the lower bearing part 70 shown in FIG. 2, and FIG. 13 is a diagram cut along the line AA' in FIG. 12. 14 is a diagram cut along the line BB' in FIG. 13.

As shown in FIGS. 12 to 14, the lower bearing part 70a of the first embodiment may be composed of an assembly of bearing units 71a, and may be provided in the substructure 10.

The bearing unit 71a may be provided in the substructure 10, and may include a guide bearing 71a1 and a bearing support 71a2.

The guide bearing 71a1 is provided at the upper end of the bearing support base 71a2, and can guide the rotation of the rotor 30.

The bearing support stand 71a2 supports the guide bearing 71a1 provided at the upper end, and may be provided in the foundation structure 10.

A plurality of the bearing units 71a described above are arranged at regular intervals along the inner circumferential surface of the rotor 30 to form the lower bearing part 70a. In close contact with each other, the bearing support stand 71a2 may be provided on the substructure 10 without overlapping the rotor 30 and the stator 20.

In this embodiment, a passage 81 may be provided between the lower bearing portion 70a and the stator 20 so that maintenance of the bearing unit 71a can be easily performed.

The passageway 81 can be secured by reducing the diameter of the stator 20 compared to the existing one. For example, if the diameter of the existing stator is 4 to 4.5 m, the stator 20 of this embodiment can secure the passageway 81 by reducing the diameter to 2 to 2.5 m.

Although the overall diameter of the stator 20 can be reduced, the diameter of the upper part where the driving part 60 is installed is the same as the existing diameter, as shown in FIG. It is preferable to make the diameter larger.

As a result, the bearing unit 71a of the lower bearing part 70a of this embodiment is easy to manufacture, and the number of installation steps can be reduced by directly installing the bearing support 71a2 on the foundation structure 10. By ensuring this, maintenance can be facilitated and the weight of the stator 20 can be reduced.

FIG. 15 is a partial diagram of the wind propulsion system 1 for explaining the second embodiment of the lower bearing part 70 shown in FIG. 2, and FIG. 16 is a diagram cut along the line AA' in FIG. 15. 17 is a diagram cut along the line BB' in FIG. 16.

As shown in FIGS. 15 to 17, the lower bearing part 70b of the second embodiment may be composed of an assembly of bearing units 71b, and may be provided in the substructure 10.

The bearing unit 71b may be provided in the substructure 10, and may include a guide bearing 71b1 and a bearing support base 71b2.

The guide bearing 71b1 is provided at the upper end of the bearing support base 71b2, and can guide the rotation of the rotor 30.

The bearing support stand 71b2 supports the guide bearing 71b1 provided at the upper end, and may be provided in the foundation structure 10.

A plurality of the bearing units 71b described above are arranged at regular intervals along the inner circumferential surface of the rotor 30 to form the lower bearing part 70b. At this time, the guide bearing 71b1 is in close contact with the inner circumferential surface of the rotor 30. However, the bearing support stand 71b2 may be provided on the foundation structure 10 so as to overlap the stator 20.

The stator 20 of this embodiment has open portions 82 formed at regular intervals at the lower end, and the bearing unit 71b may be provided in the open portion 82 so that the bearing unit 71b overlaps the stator 20. .

As a result, the bearing unit 71b of the lower bearing part 70b of this embodiment is easy to manufacture, and the number of installation steps can be reduced by providing the bearing support base 71b2 directly on the foundation structure 10. Therefore, maintenance of the bearing unit 71b can be facilitated.

FIG. 18 is a partial diagram of the wind propulsion system 1 for explaining a third embodiment of the lower bearing section 70 shown in FIG. 2, and FIG. 19 is a bearing unit 71c constituting the lower bearing section 70c of the third embodiment. FIGS. 20(a) to 20(c) are views showing a state in which the bearing unit 71c of FIG. 19 is provided on the stator 20, where (a) is a plan view. , (b) is a front view, and (c) is a rear view.

As shown in FIGS. 18 to 20, the lower bearing part 70c of the third embodiment may be composed of an assembly of bearing units 71c, and may be provided on the stator 20.

The bearing unit 71c may be provided in the stator 20 and may include a guide bearing 71c1, a first joint plate 71c2, and a second joint plate 71c3. In this embodiment, the stator 20 may be provided with windows 83 at regular intervals at the position where the bearing unit 71c is provided.

The guide bearing 71c1 may be provided on the first joint plate 71c2 and can guide the rotation of the rotor 30.

The first joint plate 71c2 consists of a pair, and may be coupled to both ends of the bearing shaft 71c11 of the guide bearing 71c1. The pair of first joint plates 71c2 may extend horizontally to one side of the guide bearing 71c1 while being coupled to the bearing shaft 71c11, and may have a shape in which the extended ends are bent vertically. A plurality of first bolt holes 71c21 for bolting to the second joint plate 71c3 may be provided in the pair of first joint plates 71c2.

The second joint plate 71c3 may be provided inside the stator 20 along the edge of the window 83, and has second bolt holes corresponding to the first bolt holes 71c21 for coupling with the pair of first joint plates 71c2. A plurality of 71c31 may be provided. The second joint plate 71c3 may have a protruding shape that is at least equal to or smaller than the radius of the guide bearing 71c1.

The above-mentioned bearing units 71c are provided on the stator 20 by bolting the first and second joint plates 71c2 and 71c3, and a plurality of bearing units 71c are arranged at regular intervals along the inner peripheral surface of the rotor 30. At this time, as shown in FIGS. 20(a) to 20(c), the guide bearing 71c1 is fixed by the first and second joint plates 71c2 and 71c3, and a part of the guide bearing 71c1 is attached to the window 83 of the stator 20. It can protrude outward through and come into close contact with the inner circumferential surface of the rotor 30.

As a result, since the lower bearing part 70c of this embodiment is manufactured by modularizing the bearing unit 71c, it is not only easy to manufacture, but also reduces the number of installation steps. Safety can be ensured.

FIG. 21 is a partial diagram of the wind propulsion system 1 for explaining a fourth embodiment of the lower bearing section 70 shown in FIG. 2, and FIG. 22 is a bearing unit 71d constituting the lower bearing section 70d of the fourth embodiment. FIG.

As shown in FIGS. 21 and 22, the lower bearing part 70d of the fourth embodiment may be composed of an assembly of bearing units 71d, and may be provided on the stator 20.

The bearing unit 71d may be provided on the stator 20 and may include a guide bearing 71d1 and a joint box 71d2. In this embodiment, the stator 20 may be provided with windows 84 at regular intervals at a position where the bearing unit 71d is provided.

The guide bearing 71d1 may be provided in the joint box 71d2 and can guide the rotation of the rotor 30.

The joint box 71d2 may be provided inside the stator 20 along the edge of the window 84, and can fix the guide bearing 71d1 with a portion of the guide bearing 71d1 protruding outside. A plurality of first bolt holes 71d21 for bolt connection to the stator 20 may be provided in the joint box 71d2.

The stator 20 may be provided with windows 84 at regular intervals at the position where the bearing unit 71d is provided, and correspond to the first bolt hole 71d21 along the edge of the window 84 for bolt connection with the joint box 71d2. A second bolt hole 71d22 may be provided.

The above-mentioned bearing units 71d are provided on the stator 20 by bolt connection of the joint box 71d2, and a plurality of bearing units 71d are arranged at regular intervals along the inner peripheral surface of the rotor 30 to form the lower bearing part 70d. With the joint box 71d2 fixed to the stator 20, a portion of the guide bearing 71d1 can protrude outward through the window 84 of the stator 20, and can be brought into close contact with the inner peripheral surface of the rotor 30.

As a result, since the lower bearing part 70d of this embodiment is manufactured by modularizing the bearing unit 71d, it is not only easy to manufacture, but also reduces the number of installation steps. Safety can be ensured.

23 is a partial diagram of the wind propulsion system 1 for explaining the fifth embodiment of the lower bearing section 70 shown in FIG. 2, and FIG. 24 is a diagram cut along the line AA' in FIG. 23. 25 is a diagram cut along the line BB' in FIG. 24.

As shown in FIGS. 23 to 25, the lower bearing portion 70e of the fifth embodiment may be formed of a single bearing unit 71e, or may be provided on the stator 20.

The bearing unit 71e may be provided on the stator 20 and may include a guide bearing 71e1 and a guide rail 71e2.

The guide bearing 71e1 may be provided along the outer peripheral surface of the stator 20 and can guide the rotation of the rotor 30.

The guide bearing 71e1 may be an annular single bearing, for example, a journal type or a ball/roller type bearing.

Considering that the annular guide bearing 71e1 is currently the largest size bearing that can be installed in a structure with a diameter of 2.5 m, the stator 20 may have a diameter smaller than at least 2.5 m. The stator 20 may have an overall diameter of 2.5 m or less, but in order to provide a space in the upper part for installing the driving part 60, as shown in FIG. It is preferable that the diameter is as large as the existing diameter (eg 4 to 4.5 m).

The guide rail 71e2 may be formed along the inner peripheral surface of the rotor 30 at a position corresponding to the annular guide bearing 71e1, and can guide the guide bearing 71e1. At this time, the guide rail 71e2 may have various protruding heights, and the protruding height may be determined according to the diameter of the rotor 30.

That is, when the diameter of the stator 20 is 2.5 m, the minimum diameter of the rotor 30 can correspond to the diameter of the guide bearing 71e1 provided on the outer peripheral surface of the stator 20, and the protrusion height of the guide rail 71e2 can correspond to the minimum diameter of the rotor 30. The maximum diameter of the rotor 30 may be determined accordingly.

Normally, the larger the diameter of the rotor 30, the better the wind propulsion ability. Therefore, in this embodiment, even if the diameter of the rotor 30 is increased by a desired amount, the lower bearing bearing can be adjusted by adjusting the protrusion height of the guide rail 71e2. The function of the section 70e can be performed.

Such a guide rail 71e2 may be separately manufactured and provided on the inner peripheral surface of the rotor 30, or may be manufactured integrally with the rotor 30.

As a result, the lower bearing part 70e of this embodiment can ensure structural safety by applying a single annular bearing to the guide bearing 71e1 and providing it in the stator 20, and the height of the guide rail 71e2 By adjusting the size of the rotor 30, the size of the rotor 30 can be changed to a desired size, so that wind propulsion performance can be easily improved.

26 is a partial diagram of the wind propulsion system 1 for explaining the sixth embodiment of the lower bearing section 70 shown in FIG. 2, and FIG. 27 is a diagram cut along the line AA' in FIG. 26. be.

As shown in FIGS. 26 and 27, the lower bearing portion 70f of the sixth embodiment may be composed of an assembly of bearing units 71f, and may be provided in the rotor 30.

The bearing unit 71f may be provided on the rotor 30, and may include a guide bearing 71f1, an arm 71f2, and a guide rail 71f3.

The arm 71f2 may be provided on one side of the guide bearing 71f1, and can guide the rotation of the rotor 30.

The arm 71f2 may be provided on the inner peripheral surface of the rotor 30. The arm 71f2 may be length-variable, foldable, or fixed. When the length of the arm 71f2 is variable, the length can be manually adjusted like a telescopic or tent pole.

The guide rail 71f3 may be formed along the outer peripheral surface of the stator 20, and can guide the guide bearing 71f1. At this time, the guide rail 71f3 may have various protruding heights, and the protruding height may be determined according to the diameter of the stator 20 or the rotor 30.

For example, when the diameter of the stator 20 is changed while the diameter of the rotor 30 is fixed, the function of the lower bearing part 70f is performed by adjusting the protruding height of the guide rail 71f3 according to the changed diameter. be able to do so. The same applies when changing the diameter of the rotor 30 while the diameter of the stator 20 is fixed.

The guide rail 71f3 may be separately manufactured and provided on the outer peripheral surface of the stator 20, or may be manufactured integrally with the stator 20.

As a result, the lower bearing part 70f of this embodiment can be manufactured to a desired size for the rotor 30 or stator 20 by adjusting the height of the guide rail 71f3, thereby improving wind propulsion performance. can be easily improved.

As described above, the wind propulsion system 1 of the present invention has the stator 20, rotor 30, end plate 40, disk 50, drive section 60, and lower bearing section 70 shown in FIG. Although various embodiments have been described with reference to No. 27, the embodiments are not limited to the embodiments for each configuration, and combinations of the above embodiments or combinations of at least one of the above embodiments and known technology may be used as further embodiments. can be included as

Although the present invention has been described above, focusing on the embodiments of the present invention, these are merely illustrative and do not limit the present invention. It will be understood that various combinations or modifications and applications not exemplified in the embodiments are possible without departing from the essential technical content of the embodiments. Therefore, technical content regarding modifications and applications that can be easily derived from the embodiments of the present invention should be construed as included in the present invention.

1 Wind propulsion system 10 Basic structure 20 Stators 30, 30a, 30b Rotor 31a Unit panel 31a1 Curved plate 31a2 Female connector 31a21 First plate 31a22 Second plate 31a23 Third plate 31a21 Fourth plate 31a3 Male connector 31a31 Fifth plate 31a32 Sixth plate 31a4 Fitting space 31b Lower rotor 31b1 First edge panel 32b Upper rotor 32b1 Second edge panel 33b Connection member 33b1 First clamp plate 33b2 Second clamp plate 33b3 First bolt member 33b4 Second bolt member 33b5 First bonding member 33b6 Second bonding member 40, 40a End plate 41a Disk 42a Stiffener 43a Central region 44a Outer region 50 Disc 60, 60a, 60b, 60c Drive section 61a, 61c Motor 62a, 62c Gear box 63a, 63c Drive shaft 64a, 64c Drive gears 65a, 65c Driven gears 66a, 66c Driven shaft 66a1 First driven shaft 66a2 Second driven shaft 67a, 67b Bearing housing 68a Coupling members 70, 70a, 70b, 70c, 70d, 70e, 70f Lower bearing section 71a, 71b, 71c, 71d, 71e, 71f Bearing unit 71a1, 71b1, 71c1, 71d1, 71e1, 71f1 Guide bearing 71c11 Bearing shaft 71a2, 71b2 Bearing support stand 71c2 First joint plate 71c21 First bolt hole 71c3 Second joint plate 71c31 Second bolt hole 71d2 Joint box 71d21 First bolt hole 71d22 Second bolt hole 71e2 Guide rail 71f2 Arm 71f3 Guide rail 81 Passageway 82 Opening parts 83, 84 Windows B1 to B11 1st to 11th bearing S Ship L Lifting device

Claims (9)

a stator installed vertically on the deck;
a rotor provided in a cylindrical shape so as to cover the outside of the stator;
a drive unit that transmits rotational power to the rotor via a disk connected to the rotor;
a lower bearing part provided at a lower part of the rotor to suppress lateral movement of the rotor;
The above drive unit is
a drive shaft rotated by a motor; a drive gear provided on the drive shaft; a driven gear that meshes with the drive gear and rotates; a first driven shaft that is coupled to the driven gear and supports rotation of the driven gear; a gear box which is built-in and is provided inside the stator;
a bearing housing that supports a second driven shaft that is connected to the first driven shaft by a coupling member and transmits rotational force to the disk;
The above rotor is
a lower rotor provided with a ring-shaped first edge panel extending inward for a certain length at the upper end and having a space for accommodating the disk;
an upper rotor having a ring-shaped second edge panel extending inwardly for a certain length at the lower end and having a space for accommodating the disk;
A wind propulsion system comprising: a coupling member coupling the lower rotor, the upper rotor, and the disk. The above bearing housing is
The wind propulsion system according to claim 1, wherein the wind propulsion system is provided inside the top surface of the stator or outside the top surface of the stator. The above drive shaft is
an upper portion is rotatably coupled to the upper surface of the gearbox by a first bearing;
a lower portion is rotatably coupled to the lower surface of the gearbox by a second bearing;
The first and second bearings are
The wind propulsion system according to claim 1, characterized in that the bearing is capable of preventing lateral force of the drive shaft or lateral movement of the drive shaft. The first driven shaft is
an upper portion is rotatably coupled to the upper surface of the gearbox by a third bearing;
a lower portion is rotatably coupled to the lower surface of the gearbox by a fourth bearing;
The third and fourth bearings above are
The wind propulsion system according to claim 1, wherein the wind propulsion system is a bearing that can prevent lateral force on the first driven shaft. The second driven shaft is
rotatably coupled to the upper surface of the stator by a fifth bearing and a sixth bearing arranged in series;
The fifth bearing mentioned above is
A bearing that can prevent the axial force of the second driven shaft,
The above sixth bearing is
The wind propulsion system according to claim 1, wherein the wind propulsion system is a bearing that can prevent lateral force on the second driven shaft. The above coupling member is
a first clamp plate that supports the lower surface of the first edge panel and the lower surface of the disk;
a second clamp plate that supports the top surface of the first edge panel and the top surface of the disk;
a first bolt member that fixes the first and second clamp plates and the disk;
The wind propulsion system according to claim 1, further comprising a second bolt member fixing the first edge panel and the second edge panel. The above coupling member is
a first bonding member provided between the first edge panel and the second clamp plate;
The wind propulsion system of claim 6, further comprising a second bonding member provided between the second edge panel and the second clamp plate. Load the land-based foundation structure onto the deck using a lifting device,
Installing the disk and the drive unit above the stator on land,
lifting the lower rotor with the lifting device to accommodate the stator therein;
coupling the lower rotor and the disk using the coupling member;
mounting the lower rotor containing the stator on the foundation structure using the lifting device;
aligning the upper rotor on land with the upper part of the lower rotor mounted on the foundation structure using the lifting device;
The wind propulsion system according to claim 1, wherein the lower rotor and the upper rotor are connected using the connecting member. A ship comprising the wind propulsion system according to any one of claims 1 to 8.

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