KR102145052B1 - Multi type wind turbine - Google Patents

Abstract

The present invention provides a wind power generator capable of stably supporting a support arm and a power generation unit.
A multi-type wind power generator according to an aspect of the present invention includes a tower including a main nacelle, a plurality of support arms fixedly installed on the tower, a plurality of power generation units fixedly installed on the support arms and having a rotor and a generator, and the main nacelle And an upper support column protruding to the upper portion of the unit, and a first support wire connected to the upper support column and the support arm to support the support arm.

Description

Multi-type wind power generator {MULTI TYPE WIND TURBINE}

The present invention relates to a multi-type wind power generator, and more particularly, to a multi-type wind power generator having a plurality of unit power generation units in one tower.

Wind power generation refers to a power generation method that converts wind energy into mechanical energy (rotation power) using a windmill, and this mechanical energy is converted into electrical energy by driving a generator to obtain power.

Wind power is the most economical among new renewable energy sources developed so far, as well as the advantage of being able to generate electricity using wind, which is an infinite, no-cost clean energy source.Therefore, active investment is being made not only in Europe but also in the Americas and Asia. to be.

Wind power generators for such wind power generation may be classified into a vertical axis wind generator and a horizontal axis wind generator according to the direction of the rotation axis. Until now, horizontal axis wind generators are more efficient and stable compared to vertical axis, so horizontal axis wind generators are mostly applied to commercial wind farms.

A typical horizontal axis wind turbine needs to increase the size of the blade or install a generator having a capacity corresponding to the blade size in order to obtain a lot of power. However, the larger the blade or the larger the capacity of the generator, the larger the weight of the blade and the generator. Therefore, the size of the tower and structure that will support the heavy blade and the generator must be increased, and the weight of the power generation facility including the blade and the generator becomes heavier. Parts such as bearings for supporting the spool must be increased, and a separate special device must be installed for the yaw motion that turns the direction of the rotor blade according to the direction of the wind.

As a result, installation and maintenance costs increase exponentially, and due to the increase in technical difficulty and cost, there is a problem that causes enormous obstacles to the wide spread of wind power generators.

Recently, a multi-type wind power generator is known in which a plurality of unit power generation units are arranged in a circumferential direction around one tower. In a multi-type wind power generator, one main nacelle is installed in one tower, a plurality of support arms are radially coupled to the main nacelle, and unit power generation units are installed on each support arm. The unit power generation unit includes a sub nacelle including a generator, a rotor rotatably coupled to the sub nacelle, and a small blade coupled to the rotor and rotating together.

In the multi-type wind power generator, since a plurality of power generation units are supported by a support arm, there is a problem in that the power generation unit may be easily damaged in situations such as strong winds. Accordingly, it is very important for the multi-type wind turbine to improve the structural stability of the support arm and the power generation unit.

Korean Patent Registration No. 10-1388494 (2014.04.23)

The present invention provides a wind power generator capable of stably supporting a support arm and a power generation unit.

A multi-type wind power generator according to an aspect of the present invention includes a tower including a main nacelle, a plurality of support arms fixedly installed on the tower, a plurality of power generation units fixedly installed on the support arms and having a rotor and a generator, and the main nacelle And an upper support column protruding to the upper portion of the unit, and a first support wire connected to the upper support column and the support arm to support the support arm.

Here, the central axis of the upper support pillar may be disposed further behind the central axis of the tower.

In addition, the central axis of the upper support pillar may be disposed at the same position as the central axis of the tower.

In addition, the central axis of the upper support pillar may be disposed in front of the central axis of the tower.

In addition, the multi-type wind power generator may further include a second support wire connected to the upper support pillar and the power generation unit to support the power generation unit.

In addition, the multi-type wind power generator may further include an outer support wire connected to the power generation units to support the power generation units.

In addition, the central axis of the upper support column may be disposed further rearward than a fixed portion to which the support arm and the tower are fixed.

In addition, the central axis of the upper support column may be disposed in front of the fixing portion to which the support arm and the tower are fixed.

In addition, the central axis of the upper support pillar may be disposed between the central axis of the tower and the support arm and a fixed portion to which the tower is fixed.

In addition, the upper support pillars are arranged to be erected in a direction crossing the length direction of the main nacelle, and the support arms are arranged to be inclined from the rear to the front, and some of the support arms are inclined upward to the main nacelle. It is connected, some of the support arms are connected to the main nacelle in an inclined downward direction, and the first support wire may be installed to pull the support arm inclined upwardly to the rear.

In addition, the upper support pillars are arranged to be erected in a direction crossing the length direction of the main nacelle, and the support arms are arranged to be inclined from the rear to the front, and some of the first support wires move the support arms forward. And the remaining first support wire may be installed to pull the support arm rearwardly.

In addition, some of the support arms are formed inclined upwardly connected to the main nacelle, and some of the support arms are formed inclined downwardly connected to the main nacelle, and the support arm formed inclined upward and the support formed inclined downward. The first support wire may be connected to the arm.

In addition, some of the support arms are formed inclined upwardly connected to the main nacelle, some of the support arms are formed inclined downwardly connected to the main nacelle, and the first support wire is formed only in the support arm formed inclined upward. The multi-type wind turbine generator may further include a third support wire connecting the side support pillar protruding laterally from the main nacelle and the support arm and the side support pillar formed to be inclined downward.

In addition, the support arm includes a horizontal arm connected in a lateral direction from the main nacelle and a vertical arm that is erected and installed with respect to the horizontal arm to support two power generation units spaced apart from each other in a vertical direction, and the first support wire includes the Can be installed connected to the transverse arm.

In addition, a connection support wire connected to the horizontal arm and the vertical arm to support the vertical arm may be further included.

As described above, according to one aspect of the present invention, since the multi-type wind turbine includes an upper support column protruding to the top of the main nacelle, an upper support column, and a support wire connected to the support arm, the structural stability of the power generation unit and the support arm This can be improved.

1 is a perspective view showing a multi-type wind power generator according to a first embodiment of the present invention.
2 is a side view showing a multi-type wind power generator according to the first embodiment of the present invention.
3 is a view showing the interior of the unit power generation unit of FIG.
4 is a perspective view showing an upper support column according to a first embodiment of the present invention.
5 is a perspective view showing a multi-type wind power generator according to a second embodiment of the present invention.
6 is a side view showing a multi-type wind power generator according to a second embodiment of the present invention.
7 is a perspective view showing a multi-type wind power generator according to a third embodiment of the present invention.
8 is a side view showing a multi-type wind power generator according to a third embodiment of the present invention.
9 is a front view showing a multi-type wind power generator according to a fourth embodiment of the present invention.
10 is a side view showing a multi-type wind power generator according to a fourth embodiment of the present invention.
11 is a perspective view showing a multi-type wind power generator according to a fifth embodiment of the present invention.
12 is a side view showing a multi-type wind power generator according to a fifth embodiment of the present invention.

The present invention is intended to illustrate specific embodiments and to be described in detail in the detailed description, since various transformations can be applied and various embodiments can be provided. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as'include' or'have' are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it is noted that in the accompanying drawings, the same components are indicated by the same reference numerals as possible. In addition, detailed descriptions of known functions and configurations that may obscure the subject matter of the present invention will be omitted. For the same reason, some components in the accompanying drawings are exaggerated, omitted, or schematically illustrated.

Hereinafter, a multi-type wind power generator according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 is a perspective view showing a multi-type wind power generator according to a first embodiment of the present invention, and Figure 2 is a side view showing a multi-type wind power generator according to the first embodiment of the present invention.

1 and 2, the multi-type wind turbine generator 10 according to the first embodiment includes a tower 100 having a main nacelle 300, an upper support arm 510, and a lower support arm 520. ), an upper power generation unit 600, a lower power generation unit 700, an upper support pillar 210, and a first support wire 810.

In the multi-type wind power generator 10 according to the present embodiment, a plurality of upper power generation units 600 and lower power generation units 700 are disposed, and the plurality of upper power generation units 600 are main through the upper support arm 510. It is fixedly coupled to the nacelle 300, and the plurality of lower power generation units 700 may be fixedly coupled to the main nacelle 300 through the lower support arm 520.

The tower 100 is erected and installed at a certain height from the ground or sea level, and a main nacelle 300 is installed at the top. The tower 100 may support a plurality of upper power generation units 600 and lower power generation units 700. The tower 100 may have a tubular shape whose diameter increases from the top to the bottom. In this case, the tower 100 may be formed in a multi-stage shape in which a plurality of tubular members are stacked. Meanwhile, a staircase, a conveyor, or an elevator may be installed inside the tower 100 to transport workers or work tools for maintenance of the unit power generation unit.

The main nacelle 300 is located above the tower 100 and may be rotatably coupled to the tower 100. The upper support arm 510 and the lower support arm 520 may be radially coupled to the main nacelle 300. However, the present invention is not limited thereto, and the upper support arm 510 and the lower support arm 520 may be formed to be connected in a horizontal or slightly inclined direction with respect to the ground.

The main nacelle 300 is formed similar to a typical nacelle shape only in appearance, and may not be provided with a gearbox or a generator inside. The main nacelle 300 is formed to be elongated in the front-rear direction and has a length direction (x-axis direction) and a lateral direction (y-axis direction). The central axis MX1 of the main nacelle 300 is formed to be connected in the front-rear direction (x-axis direction). In the present description, the term "front" refers to a direction in which the upper blade 611 faces the wind, and the forward and backward direction refers to a direction extending from the front to the rear of the upper blade 611.

The main nacelle 300 is disposed rotatably with respect to the tower 100 by a yawing system (not shown), and the upper power generation unit 600 and the lower power generation unit 700 are also rotated by the rotation of the main nacelle 300 Is done.

The upper support arm 510 is a member that connects the main nacelle 300 and the upper power generation unit 600, and may have a smaller diameter or a tubular shape having a uniform diameter as the distance from the main nacelle 300 increases. At this time, a staircase or a conveyor may be installed on the upper support arm 510 for maintenance of the upper power generation unit 600.

The lower support arm 520 also connects the main nacelle 300 and the lower power generation unit 700, and steps or conveyors may be installed therein for maintenance of the lower power generation unit 700.

Meanwhile, a plurality of upper support arms 510 and lower support arms 520 are coupled to the main nacelle 300. When the main nacelle 300 is viewed from the front, the tower 100 is The same number of upper support arms 510 and lower support arms 520 are disposed on the left and right sides. For example, as shown in FIG. 1, one upper support arm 510 and a lower support arm 520 are disposed on the left side of the tower 100, and one upper support arm 520 is disposed on the right side of the tower 100, respectively. The support arm 510 and the lower support arm 520 may be disposed.

The upper support arm 510 may be disposed inclined upward with respect to the ground, and the lower support arm 520 may be disposed inclined downward with respect to the ground. The upper support arm 510 and the lower support arm 520 may be obliquely disposed to protrude forward. The upper power generation unit 600 may be positioned further forward than the fixing part FP1 to which the upper support arm 510 and the main nacelle 300 are fixed. The inclination angle between the upper support arm 510 and the lower support arm 520 with the ground may be 15 degrees to 60 degrees, but the present invention is not limited thereto.

3 is a view showing the interior of the unit power generation unit of FIG. Referring to FIG. 3, the upper power generation unit 600 generates electricity by using wind, and the upper rotor 610, the upper sub nacelle 630, the main shaft 640, and the gearbox ( gearbox 650, brake 660 and generator 670.

The upper rotor 610 is rotatably installed in front of the upper sub-nacelle 630, and the rotational force generated from the upper rotor 610 is transmitted to the gearbox 650 through the main shaft 640. The upper rotor 610 is composed of a hub 613 and a plurality of upper blades 611, the hub 613 is coupled to one end of the main shaft 640 and is rotatably installed on the front of the sub nacelle 630 . Further, the plurality of upper blades 611 are coupled to the outer circumferential surface of the hub 613 by being spaced apart at predetermined intervals along the circumferential direction.

The hub 613 may have a conical shape protruding convexly forward to reduce wind resistance. The upper blade 611 rotates around the central axis of the hub 613 by wind. The upper blade 611 has a streamlined cross section in the width direction, and a space portion may be formed therein.

The upper sub-nacelle 630 is a housing accommodating the gearbox 650, the generator 670, and the like, and may have a hexahedral shape. However, the shape of the upper sub nacelle 630 is not necessarily limited thereto, and may be formed in a cylindrical shape or the like.

The main shaft 640 transmits the rotational force of the rotor 610 to the gearbox 650, and the main shaft 640 rotating at high speed is rotatably supported by a main bearing (not shown).

The gearbox 650 is a device that converts the rotational speed of the main shaft 640 rotated by the upper blade 611 using a gear into a rotational speed suitable for power generation, and includes a plurality of gears inside the gearbox 650 There is an increased gear unit (not shown). On the other hand, oil for a speed increaser may be provided in the speed changer 650 for lubrication and cooling of a plurality of gears in the speed increase gear part.

The brake 660 is disposed at a position adjacent to the gearbox 650 and may control the rotational force of the main shaft 640. At this time, the brake 660 may be mainly used as a disk method.

The generator 670 is a device that generates electricity using input rotational energy, and includes a rotor (not shown) and a stator (not shown) connected to a rotating shaft and fixed therein. Electricity is generated by the rotor rotating at high speed around the stator.

Meanwhile, as shown in FIG. 1, the lower power generation unit 700 also includes a lower rotor 710, a lower sub nacelle 730, a main shaft, a gearbox, a brake, and a generator. The lower rotor 710 includes a hub 713 installed in front of the lower sub nacelle 730 and a plurality of lower blades 711 coupled to the hub 713. Since the lower power generation unit 700 has the same structure as the upper power generation unit 600, a redundant description will be omitted.

4 is a perspective view showing an upper support column according to a first embodiment of the present invention. 1, 2, and 4, the main nacelle 300 is provided with an upper support pillar 210 protruding upward.

The upper support pillar 210 is erected and installed in a direction intersecting the central axis MX1 of the main nacelle 300 and may be disposed vertically with respect to the ground. The upper support pillar 210 may be formed in a cylindrical shape having a uniform diameter, or may be formed in a truncated cone shape whose diameter decreases toward the top.

The upper support pillar 210 is located further behind the tower 100, and the central axis SX1 of the upper support pillar 210 is positioned further behind the central axis TX1 of the tower 100. In addition, the central axis (SX1) of the upper support column 210 may be located further rear than the fixing portion (FP1) to which the upper support arm 510 and the main nacelle 300 are fixed, and the center of the tower 100 The shaft TX1 may be located further forward than the fixing part FP1. Accordingly, the upper support pillar 210 may support the upper support arm 510 protruding forward from the rear.

A plurality of rings 230 for installing wires are installed on the outer surface of the upper support pillar 210, and the rings 230 may be located on both sides of the upper support pillar 210. In addition, a plurality of rings 230 are spaced apart from each other in the height direction of the upper support pillar 210.

A first support wire 810 connecting the upper support arm 510 and the upper support pillar 210 is installed on the upper support pillar 210. To this end, a ring 530 coupled to the first support wire 810 may be installed in the upper support arm 510 as well. The plurality of rings 530 may be spaced apart from each other in the longitudinal direction of the upper support arm 510.

A plurality of first support wires 810 may be installed on the upper support pillar 210, and the first support wire 810 may be formed of an aggregate of steel wires having a twisted structure or may be formed in a chain structure. The first support wire 810 is installed to pull the upper support arm 510 rearward.

Any one first support wire 810 connected to the upper support column 210 may be connected to the upper support column 210 at a first position, and may be connected to the upper support arm 510 at a second position, and the first The first support wire 810 connected to the upper support column at a third position lower than the position may be connected to the upper support arm 510 at a fourth position closer to the main nacelle 300 than at the second position. That is, the first support wire 810 connected to the upper part of the upper support pillar 210 is connected to the upper support arm 510 from a further outer side than the first support wire 810 connected to the lower part.

On the other hand, the multi-type wind power generator 10 according to the first embodiment may further include a second support wire 820 and an outer support wire 830. The second support wire 820 is connected to the upper support pillar 210 and the upper power generation unit 600 to support the upper power generation unit 600. The second support wire 820 is connected to the upper support pillar 210 at a higher level than the first support wire 810, and is connected to the side of the upper sub nacelle 630. To this end, a ring 620 coupled to the second support wire 820 may be installed on the upper sub nacelle 630.

Meanwhile, the outer support wire 830 may be connected to the power generation units 600 and 700 to support the power generation units 600 and 700. The outer support wire 830 may be installed connected to the upper power generation units 600 to support the upper power generation units 600. In addition, the outer support wire 830 is installed connected to the ring 620 of the upper power generation unit 600 and the ring 720 of the lower power generation unit 700 to connect the upper power generation unit 600 and the lower power generation unit 700 You can support it.

As described above, according to the first embodiment, the upper support pillar 210, the first support wire 810, the second support wire 820, and the outer support wire 830 are installed to provide the upper power generation unit 600. And the lower power generation unit 700 can be stably supported.

Hereinafter, a multi-type wind power generator according to a second embodiment of the present invention will be described.

5 is a perspective view showing a multi-type wind power generator according to a second embodiment of the present invention, and FIG. 6 is a side view showing a multi-type wind power generator according to the second embodiment of the present invention.

5 and 6, the multi-type wind turbine generator 20 according to the second embodiment includes a tower 100 having a main nacelle 300, an upper support arm 510, and a lower support arm 520. ), an upper power generation unit 600, and a lower power generation unit 700, an upper support column 1210, a first support wire 1810, a second support wire 1820, and an outer support wire 1830. . The multi-type wind power generator 20 according to the second embodiment has the same structure as the multi-type wind power generator according to the first embodiment, except for the configuration of the upper support column 1210 and the support wires. Duplicate description is omitted.

The main nacelle 300 is provided with an upper support column 1210 protruding upward. The upper support pillar 1210 may be formed in a cylindrical shape having a uniform diameter, or may be formed in a truncated cone shape whose diameter decreases toward the top.

In the upper support pillar 1210, the central axis SX2 is disposed at the same position as the central axis TX2 of the tower 100, so that the upper support pillar 1210 and the tower 100 have a coaxial structure. In addition, the central axis SX2 of the upper support pillar 1210 may be positioned more forward (x-axis direction) than the fixing portion FP2 to which the upper support arm 1510 and the main nacelle 300 are fixed. On the other hand, the upper power generation unit 600 and the lower power generation unit 700 are located in front of the tower 100.

Accordingly, the upper support column 1210 is formed to support the upper support arm 510 and the lower support arm 520 from the front, and to support the upper power generation unit 600 and the lower power generation unit 700 from the rear.

The upper support arm 510 or a first support wire 1810 connecting the lower support arm 520 and the upper support post 1210 is installed on the upper support post 1210. Some of the first support wire 1810 is connected and installed to the upper support arm 510, and another first support wire 1810 is connected and installed to the lower support arm 520.

A plurality of first support wires 1810 may be installed on the upper support pillar 1210, and the first support wire 1810 may be formed of one or a plurality of steel wires. The first support wire 1810 connected to the upper part of the upper support column 1210 is connected to the upper support arm 510 from a further outer side than the first support wire 1810 connected to the lower part. The first support wire 1810 is installed to pull the upper support arm 510 or the lower support arm 520 forward.

Some of the second support wire 1820 is connected to the upper support pillar 1210 and the upper power generation unit 600 to support the upper power generation unit 600, and other second support wire 1820 is the upper support column ( It is installed connected to 1210 and the lower power generation unit 700 to support the lower power generation unit 700. The second support wire 1820 is connected to the upper support column 1210 at a higher level than the first support wire 1810, and is connected to the side of the upper sub nacelle 630 or the lower sub nacelle 730. The second support wire 1820 is installed to pull the upper power generation unit 600 or the lower power generation unit 700 to the rear. Meanwhile, the outer support wire 1830 may be connected to the upper power generation units 600 to support the upper power generation units 600.

As described above, according to the second embodiment, the upper support column 1210 and the first support wire 1810 support the upper support arm 510 and the lower support arm 520, and the second support wire 1820 Since the upper power generation unit 600 and the lower power generation unit 700 are supported, the structural strength of the multi-type wind power generator 20 may be improved.

Hereinafter, a multi-type wind power generator according to a third embodiment of the present invention will be described. 7 is a perspective view showing a multi-type wind power generator according to a third embodiment of the present invention, and FIG. 8 is a side view showing a multi-type wind power generator according to the third embodiment of the present invention.

7 and 8, the multi-type wind turbine generator 30 according to the third embodiment includes a tower 100 having a main nacelle 300, an upper support arm 510, and a lower support arm 520. ), an upper power generation unit 600, and a lower power generation unit 700, an upper support column 2210, a first support wire 2810, a second support wire 2820, and an outer support wire 2830. . The multi-type wind power generator 20 according to the second embodiment has the same structure as the multi-type wind power generator according to the first embodiment, except for the configuration of the upper support column 2210 and the support wires. Duplicate description is omitted.

The main nacelle 300 is provided with an upper support column 2210 protruding upward. The upper support pillar 2210 may be formed in a cylindrical shape having a uniform diameter, or may be formed in a truncated cone shape whose diameter decreases toward the top.

The upper support column 2210 has a central axis SX3 positioned further behind the central axis TX3 of the tower 100. In addition, the central axis SX3 of the upper support pillar 2210 may be positioned more forward (x-axis direction) than the fixing portion FP3 to which the upper support arm 510 and the main nacelle 300 are fixed. That is, the central axis SX3 of the upper support pillar 2210 may be positioned between the central axis TX3 of the tower 100 and the fixing part FP3. On the other hand, the central axis TX3 of the tower 100 is located more forward than the fixed part FP3, and the upper power generation unit 600 and the lower power generation unit 700 are located further forward than the tower 100.

The upper support arm 510 or a first support wire 2810 connecting the lower support arm 520 and the upper support post 2210 is installed on the upper support post 2210. Some of the first support wire 2810 is connected and installed to the upper support arm 510, and another first support wire 2810 is connected and installed to the lower support arm 520.

A plurality of first support wires 2810 may be installed on the upper support pillar 2210, and the first support wire 2810 may be formed of one or a plurality of steel wires. The first support wire 2810 connected to the upper part of the upper support column 2210 is connected to the upper support arm 510 from a further outer side than the first support wire 2810 connected to the lower part. Some of the first support wire 2810 pulls the upper support arm 510 or the lower support arm 520 forward, and the other first support wire 2810 is the upper support arm 510 or the lower support arm 520 It is installed to pull it backward. The first support wire 2810 installed at the lower part of the upper support column 2210 is installed on the upper part of the first support wire 2810 that pulls the upper support arm 510 or the lower support arm 520 forward and pulls it forward. The first support wire 2810 is installed to pull the upper support arm 510 or the lower support arm 520 rearward.

Some of the second support wire 2820 is connected to the upper support pillar 2210 and the upper power generation unit 600 to support the upper power generation unit 600, and the other second support wire 2820 is an upper support column ( It is installed connected to the 2210 and the lower power generation unit 700 to support the lower power generation unit 700. The second support wire 2820 is connected to the upper support column 2210 at an upper portion than the first support wire 2810, and is connected to the side of the upper sub nacelle 630 or the lower sub nacelle 630. The second support wire 2820 is installed to pull the upper power generation unit 600 or the lower power generation unit 700 to the rear. Meanwhile, the outer support wire 2830 may be connected to the upper power generation units 600 to support the upper power generation units 600.

As described above, according to the third embodiment, the upper support column 2210 and the first support wire 2810 support the upper support arm 510 and the lower support arm 520, and the second support wire 2820 Since the upper power generation unit 600 and the lower power generation unit 700 are supported, the structural strength of the multi-type wind power generator 30 according to the third embodiment may be improved.

Hereinafter, a multi-type wind power generator according to a fourth embodiment of the present invention will be described. 9 is a front view showing a multi-type wind power generator according to a fourth embodiment of the present invention, and FIG. 10 is a side view showing a multi-type wind power generator according to the fourth embodiment of the present invention.

9 and 10, the multi-type wind power generator 40 according to the fourth embodiment includes a tower 100 having a main nacelle 300, an upper support arm 510, and a lower support arm 520. ), upper power generation unit 600, and lower power generation unit 700, upper support pillar 3210, side support pillar 3220, first support wire 3810, second support wire 3820, third support A wire 3860 and a fourth support wire 3870 are included. The multi-type wind power generator 40 according to the fourth embodiment is the same as the multi-type wind power generator according to the first embodiment, except for the configuration of the upper support column 3210, the side support column 3220, and support wires. Since it is made of a structure, redundant description of the same configuration will be omitted.

The main nacelle 300 is provided with an upper support pillar 3210 protruding upward and two side support pillars 3220 protruding in the lateral direction (y-axis direction). The upper support pillar 3210 may be formed in a cylindrical shape having a uniform diameter, or may be formed in a truncated cone shape whose diameter decreases toward the top. The side support pillars 3220 are installed so as to protrude from two side surfaces facing each other in the main nacelle 300 and may be formed as a cylinder.

The upper support pillar 3210 has a central axis SX4 positioned more forward (x-axis direction) than a central axis TX4 of the tower 100. In addition, the central axis SX4 of the upper support pillar 3210 may be positioned more forward than the fixing part FP4 to which the upper support arm 510 and the main nacelle 300 are fixed. On the other hand, the upper power generation unit 600 and the lower power generation unit 700 are located in front of the tower 100.

A first support wire 3810 connecting the upper support arm 510 and the upper support post 3210 is installed on the upper support post 3210. A plurality of first support wires 3810 may be installed on the upper support pillar 3210, and the first support wire 3810 may be formed of one or a plurality of steel wires.

The first support wire 3810 connected to the upper part of the upper support column 3210 is connected to the upper support arm 510 from a further outer side than the first support wire 3810 connected to the lower part. The first support wire 3810 is installed to pull the upper support arm 510 forward.

The second support wire 3820 is connected to the upper support pillar 3210 and the upper power generation unit 600 to support the upper power generation unit 600. The second support wire 3820 is connected to the upper support column 3210 at an upper portion than the first support wire 3810, and is connected to the side of the upper sub nacelle 630. The second support wire 3820 may be installed to pull the upper power generation unit 600 backward or may be installed to pull the lower power generation unit 600.

The side support pillars 3220 protrude to the left and right of the tower 100 based on the tower 100 when the main nacelle 300 is viewed in front. The side support pillar 3220 may protrude in a lateral direction parallel to the ground, or may protrude obliquely upward with respect to the ground. A third support wire 3860 and a fourth support wire 3870 are connected to the side support column 3220, and the third support wire 3860 is connected to the lower support arm 520, and the fourth support The wire 3870 may be connected and installed to the lower power generation unit 700.

The third support wire 3860 and the fourth support wire 3870 fixed to the lower support arm 520 protruding to the left are installed on the side support post 3220 protruding to the left, and the side support post protruding to the right A third support wire 3860 and a fourth support wire 3870 fixed to the lower support arm 520 protruding to the right are installed at the 3220.

As described above, according to the fourth embodiment, the upper support column 3210 and the first support wire 3810 support the upper support arm 510, and the second support wire 3820 supports the upper power generation unit 600. And the side support column 3220, the third support wire 3860, and the fourth support wire 3870 support the lower support arm 520 and the lower power generation unit 700, so the multi-type according to the fourth embodiment The structural strength of the wind generator 40 may be improved.

Hereinafter, a multi-type wind power generator according to a fifth embodiment of the present invention will be described. 11 is a perspective view showing a multi-type wind power generator according to a fifth embodiment of the present invention, and FIG. 12 is a side view showing a multi-type wind power generator according to the fifth embodiment of the present invention.

11 and 12, the multi-type wind power generator 50 according to the fifth embodiment includes a tower 100 having a main nacelle 300, a support arm 4500, and an upper power generation unit 600. , A lower power generation unit 700, an upper support column 4210, a first support wire 4810, a second support wire 4820, and a connection support wire 4830. The multi-type wind power generator 50 according to the fifth embodiment has the same structure as the multi-type wind power generator according to the first embodiment, except for the configuration of the support arm 4500, the upper support column 4210, and the support wires. Since it is made of, duplicate description of the same configuration will be omitted.

Support arms 4500 protruding to both sides of the main nacelle 300 are installed, and support arms 4500 protruding to the left are installed on one side of the main nacelle 300, and the other side of the main nacelle 300 A support arm 4500 protruding to the right is installed in the unit.

The support arm 4500 includes a transverse arm 4510 laterally connected from the main nacelle 300 and a vertical arm 4520 erected and installed with respect to the transverse arm 4510. The horizontal arm 4510 is formed to protrude forward (x-axis direction) while extending parallel to the ground in the main nacelle.

The vertical arm 4520 may be installed standing vertically with respect to the ground, and the horizontal arm 4510 is connected and installed at the center of the vertical arm 4520 in the longitudinal direction. Two power generation units are installed on one vertical arm 4520, the upper power generation unit 600 is installed at the top of the vertical arm 4520, and the lower power generation unit 700 is installed at the lower end of the vertical arm 4520 Can be.

The main nacelle 300 is provided with an upper support pillar 4210 protruding upward, and the upper support pillar 4210 is erected and installed in a direction replacing the length direction of the main nacelle 300. The height direction of the upper support pillar 4210 may be made perpendicular to the length direction of the main knuckles 300. The upper support pillar 4210 may have a cylindrical shape having a uniform diameter, or may have a truncated cone shape whose diameter decreases toward the top.

In the upper support pillar 4210, the central axis SX5 is disposed at the same position as the central axis TX5 of the tower 100, so that the upper support pillar 4210 and the tower 100 have a coaxial structure. The fixing part FP5 to which the support arm 4500 and the main nucleus 300 are connected is located further rear than the upper support column 4210, and the upper power generation unit 600 and the lower power generation unit 700 are upper support columns 4210 ) Is located further forward. The horizontal arm 4510 is formed by connecting from the rear to the front of the upper support column 4210. Accordingly, the upper support pillar 4210 may support the horizontal arm 4510 from the front and rear.

A first support wire 4810 connecting the horizontal arm 4510 and the upper support pillar 4210 is installed on the upper support pillar 4210. A plurality of first support wires 4810 may be installed on the upper support pillar 4210, and the first support wire 4810 may be formed of one or a plurality of steel wires. The first support wire 4810 connected to the upper part of the upper support column 4210 is connected to the transverse arm 4510 further outside than the first support wire 4810 connected to the lower part. Some first support wires 4810 are installed to pull the transverse arm 4510 forward, and another first support wire 4810 is installed to pull the transverse arm 4510 back.

Meanwhile, the second support wire 4820 is connected to the upper support pillar 4210 and the upper power generation unit 600 to support the upper power generation unit 600. The second support wire 4820 is installed to pull the upper power generation unit 600 to the rear.

The connection support wire 4830 is connected to the horizontal arm 4510 and the vertical arm 4520 to support the vertical arm 4520. The connection support wire 4830 is fixedly installed on a ring installed on the horizontal arm 4510 and the vertical arm 4520, and may include a plurality of steel wires. The connection support wire 4830 may be installed obliquely to the horizontal arm 4510 and the vertical arm 4520.

As described above, according to the fifth embodiment, the multi-type wind power generator 50 includes an upper support column 4210, a first support wire 4810, a second support wire 4820, and a connection support wire 4830. Therefore, the structural strength of the multi-type wind power generator 50 may be improved.

As described above, one embodiment of the present invention has been described, but those of ordinary skill in the relevant technical field add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. It will be possible to variously modify and change the present invention by the like, and it will be said that this is also included within the scope of the present invention.

10, 20, 30, 40, 50: multi-type wind power generator
100: tower
210, 1210, 2210, 3210, 4210: upper support column
300: main nacelle
510: upper support arm
520: lower support arm
600: upper power generation unit
610: upper rotor
611: upper blade
613, 713: hub
630: upper sub nacelle
640: main shaft
650: gearbox
660: brake
670: generator
700: lower power generation unit
710: lower rotor
711: lower blade
730: lower sub nacelle
810, 1810, 2810, 3810: first support wire
820, 1820, 2820, 3820: second support wire
830, 1830, 2830: outer support wire
3220: side support column
3860: third support wire
3870: fourth support wire
4830: connection support wire
4500: support arm
4510: connected transverse arm
4520: vertical arm

Claims (15)

A tower including a main nacelle;
A plurality of support arms fixedly installed on the tower;
A plurality of power generation units fixedly installed on the support arms and having a rotor and a generator;
An upper support pillar protruding from the top of the main nacelle;
A first support wire connected to the upper support pillar and the support arm to support the support arm;
A side support pillar protruding laterally from the main nacelle; And
A third support wire connecting the support arm and the side support pillar formed to be inclined downward;
Including,
The central axis of the upper support column is disposed further rear than the central axis of the tower, the multi-type wind generator disposed between the support arm and the main nacelle is fixed fixed portion and the central axis of the tower. delete delete delete The method of claim 1,
Multi-type wind power generator further comprising a second support wire connected to the upper support pillar and the power generation unit to support the power generation unit. The method of claim 5,
A multi-type wind power generator connected to the power generation units and further comprising an outer support wire supporting the power generation units. delete delete delete The method of claim 1,
The upper support pillar is erected and disposed in a direction crossing the length direction of the main nacelle,
The support arms are arranged obliquely from the rear to the front, some of the support arms are formed inclined upwardly connected to the main nacelle, and some of the support arms are formed obliquely connected downwardly to the main nacelle,
The first support wire is a multi-type wind power generator installed to pull the support arm inclined upwardly to the rear. The method of claim 1,
The upper support pillar is erected and disposed in a direction crossing the length direction of the main nacelle,
The support arms are arranged inclined from the rear to the front,
Some of the first support wires are installed to pull the support arm forward by being coupled to a portion disposed behind the upper support column in the support arm, and the remaining first support wire is the upper support column at the support arm. A multi-type wind power generator that is coupled to a portion disposed more forward and is installed to pull the support arm rearward. The method of claim 1,
Some of the support arms are formed inclined upwardly connected to the main nacelle, and some of the support arms are formed inclined downwardly connected to the main nacelle,
A multi-type wind power generator in which the first support wire is connected to the support arm inclined upward and the support arm inclined downward. A tower including a main nacelle;
A plurality of support arms fixedly installed on the tower;
A plurality of power generation units fixedly installed on the support arms and having a rotor and a generator;
An upper support pillar protruding from the top of the main nacelle;
A first support wire connected to the upper support pillar and the support arm to support the support arm;
A side support pillar protruding laterally from the main nacelle; And
Multi-type wind power generator comprising; a third support wire for connecting the support arm and the side support column formed inclined downward. A tower including a main nacelle;
A plurality of support arms fixedly installed on the tower;
A plurality of power generation units fixedly installed on the support arms and having a rotor and a generator;
An upper support pillar protruding from the top of the main nacelle; And
A first support wire connected to the upper support pillar and the support arm to support the support arm;
Including,
The support arm includes a horizontal arm connected in a lateral direction from the main nacelle and a vertical arm for supporting two power generation units erected and installed with respect to the horizontal arm, and spaced apart in a vertical direction,
The first support wire is a multi-type wind power generator connected to the horizontal arm. The method of claim 14,
A multi-type wind power generator connected to the horizontal arm and the vertical arm, further comprising a connection support wire for supporting the vertical arm.

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