KR102359505B1 - Method for fixing marine wind generator - Google Patents

Abstract

The present invention relates to a fixing method of an offshore wind power plant capable of stably fixing a floating body of a semi-submersible offshore wind power plant to minimize shaking by using an anchor chain. To this end, the present invention provides a semi-submersible float consisting of one central floating body, three circular floating bodies arranged in a triangle around the central floating body, and a connecting floating body connecting each circular floating body and the central floating body; a vertical support installed in a state of standing vertically on the central floating body and each circular floating body; a base installed on the vertical support; a wind power generator mounted on the central portion of the base; and an anchor chain fixing bracket mounted on the upper surface of the vertical support. In the fixing method of the offshore wind power generation facility, the anchor chain fixed to the anchor chain fixing bracket is attached to the fairlead installed on the outer surface of the vertical support. Marine, characterized in that the anchor chain is extended in the vertical direction by supporting it, and the anchor chain extending in the vertical direction is passed through the guide pocket hole formed in the circular floating body to be guided in the vertical direction toward the water It is intended to provide a method of fixing a wind power plant.

Description

Method for fixing marine wind generator

The present invention relates to a method of fixing an offshore wind power plant, and more particularly, an offshore wind power that can stably fix a floating body of a semi-submersible offshore wind power plant using an anchor chain to minimize shaking. It relates to a method of fixing power generation equipment.

By breaking away from the existing electricity production methods such as nuclear power generation and thermal power generation, eco-friendly wind power generation is in the spotlight as a new and renewable energy production method.

Wind power generation facilities have been mainly installed on land, but recently they are being installed in the sea with better wind quality than on land. This is because it has the advantage of being able to receive a stable wind power supply while being less affected by wind power.

These offshore wind power generation facilities are largely divided into floating type and fixed type. Although the structure of the fixed offshore wind power generation facility is simpler than that of the floating offshore wind power generation facility, there is a disadvantage that a seabed foundation construction is required for its fixation, and floating offshore wind power generation facilities The facility has the advantage that it does not require subsea foundation construction compared to the fixed offshore wind power generation facility.

However, since it is difficult to maintain a stable equilibrium posture due to the influence of the surrounding environment such as waves and wind, a separate fixing device is required for the floating offshore wind power generation facility.

Registered Patent Publication No. 10-1293342 (2013.07.30)

The present invention has been devised in view of the above points, and to provide a fixing method of an offshore wind power plant capable of stably fixing the floating body of a semi-submersible offshore wind power plant using an anchor chain to minimize shaking. There is a purpose.

In order to achieve the above object, the present invention consists of: one central floating body, three circular floating bodies arranged in a triangle around the central floating body, and a connecting floating fluid connecting each circular floating body and the central floating body semi-submersible float; a vertical support installed in a state of standing vertically on the central floating body and each circular floating body; a base installed on the vertical support; a wind power generator mounted on the central portion of the base; and an anchor chain fixing bracket mounted on the upper surface of the vertical support. In the fixing method of the offshore wind power plant, the anchor chain fixed to the anchor chain fixing bracket is supported on the fairlead installed on the outer surface of the vertical support. to guide and extend downwards in the vertical direction from the fairleader, and pass the anchor chain guided and extended downward in the vertical direction from the fairleader through the guide pocket hole formed in the circular floating body, and the anchor chain is formed by the guide pocket hole It provides a method of fixing an offshore wind power plant, characterized in that it is guided in a vertical direction toward the water.

Here, the fairleader may include: a pair of guide brackets that are spaced apart from each other in the left and right directions on the outer surface of the vertical support; a guide roller connected between the inner surfaces of the guide bracket to guide the anchor chain in a vertical direction toward the water; and a guide pipe connected between the inner surfaces of the guide bracket to be positioned behind the guide roller to guide the anchor chain in the outward direction of the guide roller.

In addition, a guide groove into which the anchor chain is inserted may be formed in the guide roller.

In addition, a buffer guide protrusion for guiding the anchor chain into the chain guide pocket hole while buffering the contact impact of the anchor chain may be formed on the outer circumferential surface of the entrance of the chain guide pocket hole.

In addition, the lower portion of the chain guide pocket hole may be formed as an expansion hole section having a diameter that is gradually widened for easy passage of the anchor chain.

Through the above-described problem solving means, the present invention provides the following effects.

First, when fixing the semi-submersible floating body of the offshore wind power plant to the sea using an anchor chain, the anchor chain descends and extends in the vertical direction by the fairlead and the chain guide pocket hole. The chain can be fixed by entering into an underwater position adjacent to the semi-submersible float rather than in an underwater position far from the semi-submersible float, thereby minimizing the shaking of the semi-submersible float by waves and wind.

Second, by holding the upper end of the anchor chain unshakable from the fairleader while the anchor chain is submerged in the water, the anchor chain extending vertically downward is restrained within the chain guide pocket hole and does not shake, so that the floating body of the offshore wind power generation facility is waved And shaking by wind, etc. can be further minimized.

1 is a perspective view showing an offshore wind power plant to which a fixing method of an offshore wind power plant according to the present invention is applied;
Figure 2 is a side cross-sectional view showing an offshore wind power plant to which the fixing method of the offshore wind power plant according to the present invention is applied;
3 is a side cross-sectional view showing an enlarged device for fixing an offshore wind power plant according to the present invention;
Figure 4 is a perspective view showing a fairlead of the offshore wind power plant fixing device according to the present invention;
5 is a plan view showing a state in which the anchor chain is inserted and seated in the fairlead of the offshore wind power plant fixing device according to the present invention;
Figure 6 is a side view showing a state in which the anchor chain vertically descends through the fairlead of the offshore wind power plant fixing device according to the present invention;
Figure 7 is an enlarged cross-sectional view showing the structure of the chain guide pocket hole of the device for fixing offshore wind power generation equipment according to the present invention.

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

The present invention is a semi-submersible offshore wind power generation facility designed to float the offshore wind power generation facility on the sea using the buoyancy of the floating body, when the semi-submersible floating body is fixed to the sea using an anchor chain, the upper part of the floating body By allowing the anchor chain to descend in the vertical direction toward the water by guiding the chain guide pocket hole formed under the fairlead and the floating body installed in the Accordingly, there is an emphasis on preventing the abrasion of the existing floating body due to friction when it flows heavily along the ocean current.

1 to 3 attached show an offshore wind power plant to which an offshore wind power plant fixing device according to the present invention is applied.

As shown in Figures 1 and 2, the offshore wind power generation facility according to the present invention is a floating type, the semi-submersible floating body 10 that generates buoyancy while submerged in the sea at the lowest position is located.

The semi-submersible floating body 10 includes one central floating body 11, three circular floating bodies 12 arranged triangularly around the central floating body 11, and each circular floating body 12 and the central part. It is composed of a connecting part fluid 13 that integrally connects the fluids 11 .

Accordingly, the semi-submersible floating body 10 can float while maintaining parallel to the sea as the three circular floating bodies 12 are positioned in a triangular arrangement at the outer position around the central floating body 11. there will be

On the central floating body 11 and each circular floating body 12, a vertical support 20 serving as a support for installing an actual offshore power plant is installed in a vertically standing state, and on this vertical support 20, a base ( 30) is installed.

Accordingly, the wind power generator 40 for actual power production of the offshore power plant is built in the central part of the base 30 .

For reference, the wind power generator 40 is composed of blades, a generator motor, and a tower supporting them at a predetermined height.

Since such offshore wind power generation equipment is located in a semi-submersible floating state at the sea level, it is difficult to maintain a stable equilibrium posture due to the influence of the surrounding environment such as waves and wind, so a separate fixing device is required.

To this end, an anchor chain fixing bracket 22 is mounted on the upper surface of the vertical support 20, and the anchor chain 50 for entering the water and fixing the offshore wind power generation facility is installed on the anchor chain fixing bracket 22. The upper part is fixed.

Accordingly, when the anchor chain 50 fixed to the anchor chain fixing bracket 22 is dropped into the sea, the anchor chain 50 enters the underwater floor and fixes the offshore wind power generation facility so as not to be shaken by waves and wind. will do

At this time, when the anchor chain 50 falls into an underwater position far away from the semi-submersible float 10, the fixing point (anchor) of the semi-submersible float 10 and the semi-submersible float 10 The distance between the submersible points of the chain) becomes farther, and the entire offshore wind power plant including the semi-submersible floating body 10 can be easily shaken by waves and winds.

To prevent this, a pair for guiding the anchor chain 50 fixed to the anchor chain fixing bracket 22 on the outer surface of the vertical support 20 in the vertical direction toward the chain guide pocket hole 70 to be described later. A reader 60 is installed.

4 is a perspective view showing a fairlead of the offshore wind power plant fixing device according to the present invention, Figure 5 shows a state in which the anchor chain is inserted and seated in the fairlead of the offshore wind power plant fixing device according to the present invention It is a plan view, and FIG. 6 is a side view showing a state in which the anchor chain vertically descends through the fairlead among the offshore wind power generation facility fixing apparatus according to the present invention.

As shown in FIGS. 4 and 5 , the fairlead 60 includes a pair of guide brackets 61 spaced apart from each other in the left and right directions on the outer surface of the vertical support 20 , and the guide bracket 61 . A guide roller 62 that is connected between the inner surfaces of the guide roller 62 to guide the anchor chain 50 in a vertical direction toward the water, and the inner surface of the guide bracket 61 to be located behind the guide roller 62. It is configured to include a guide pipe 63 for guiding the chain 50 to be mounted on the outer surface of the guide roller 62 .

In addition, the guide roller 62 is formed with a guide groove 64 into which a part of the anchor chain 50 is inserted so that the anchor chain 50 is guided in a vertical direction toward the water.

Preferably, a rib 65 for rigidity reinforcement is further integrally formed on the outer surface of the guide bracket 61, and the rib 65 for rigidity reinforcement is a guide when the heavy anchor chain 50 ascends and descends. Even when a contact impact is applied to the bracket 61, the guide bracket 61 is not deformed and serves to reinforce the rigidity to be maintained in a strong state.

Accordingly, when the anchor chain 50 fixed to the anchor chain fixing bracket 22 is mounted on the fairleader 60 as shown in FIG. 6 , the anchor chain 50 rides the guide pipe 63 and guides it. After being inserted into the guide groove 64 of the roller 62, it is continuously dropped to extend vertically downward toward the water surface and the guide pocket hole 70, and eventually the anchor chain 50 enters the underwater floor to generate offshore wind power. It plays a role of fixing the equipment so that it does not shake by waves and wind.

At this time, if the fairlead 60 is not mounted on the outer surface of the vertical support 20 , the anchor chain 50 is in the water far away from the semi-submersible float 10 as shown in the hidden line trajectory shown in FIG. 2 . It falls into the position, and the distance between the semi-submersible floating body 10 and the fixed point of the semi-submersible floating body 10 (the underwater falling point of the anchor chain) becomes farther, and the semi-submersible floating body 10 The entire offshore wind power plant including the can be easily shaken by waves and wind.

On the other hand, when the fairleader 60 is mounted on the outer surface of the vertical support 20, the anchor chain 50 rides the guide pipe 63 of the fairleader 60 and the guide groove of the guide roller 62 ( 64) and then vertically fall toward an adjacent underwater position of the semi-submersible float 10 in succession.

Preferably, a guide pocket hole 70 through which the lower portion of the anchor chain 50 passes is further formed in the circular floating body 12 of the semi-submersible floating body 10, and an anchor chain falling vertically ( By allowing the 50) to pass through the guide pocket hole 70, it is possible to further ensure the vertical drop and vertical standing of the anchor chain 50.

Accordingly, when the anchor chain 50 falls vertically toward the adjacent underwater position of the semi-submersible float 10 by the guidance of the fairleader 60, the semi-submersible float 10 and the semi-submersible part The distance between the fixed points of the fluid 10 (the underwater falling point of the anchor chain) becomes close to the maximum, and the anchor chain 50 is arranged taut along the vertical direction and the entire including the semi-submersible float 10 The offshore wind power plant catches the shaking caused by waves and wind.

Furthermore, by holding the upper end of the anchor chain 50 unshaken in the fairleader 60 while the anchor chain 50 is submerged in water, it is possible to further minimize the shaking of the floating body of the offshore wind power plant by waves and wind. can

In addition, by allowing the anchor chain 50 to fall vertically toward the adjacent underwater position of the semi-submersible float 10 by the guidance of the fairleader 60, the anchor chain 50 ) to prevent interference.

On the other hand, a chain guide pocket hole ( 70) is formed through the vertical direction.

At this time, as can be seen well in FIG. 7 , on the outer circumferential surface of the inlet of the chain guide pocket hole 70 , the contact impact of the anchor chain 50 falling vertically from the anchor chain fixing bracket 22 is buffered and the anchor chain 50 is installed. A buffer guide protrusion 72 for guiding into the chain guide pocket hole 70 is formed to protrude.

In addition, the upper section of the chain guide pocket hole 70 is in the form of a straight tube of a certain diameter, but the lower section of the chain guide pocket hole 70 has a diameter that gradually widens for easy passage of the anchor chain 50 . It is formed as an expansion hole section (74).

Accordingly, when the anchor chain 50 fixed by the anchor chain fixing bracket 22 is mounted on the guide roller 62 of the fairleader 60 as shown in FIG. 3 , the guide roller 62 is guided falls vertically toward the chain guide pocket hole 70 by the plays a role in making

At this time, if the anchor chain 50 falls vertically and does not pass through the chain guide pocket hole 70 , the anchor chain 50 moves away from the semi-submersible float 10 as shown in the hidden line trajectory shown in FIG. 2 . It can fall into a remote underwater location, and the distance between the semi-submersible floating body 10 and the fixed point of the semi-submersible floating body 10 (underwater falling point of the anchor chain) becomes farther, and the semi-submersible floating body The entire offshore wind power plant including (10) can be easily shaken by waves and wind.

On the other hand, when the anchor chain 50 falls vertically and passes through the chain guide pocket hole 70 , the anchor chain 50 falls vertically toward the adjacent underwater position of the semi-submersible floating body 10 .

Accordingly, when the anchor chain 50 falls vertically toward the adjacent underwater position of the semi-submersible float 10 by the guidance of the chain guide pocket hole 70, the semi-submersible float 10 and the semi-submersible float 10 and half The distance between the anchoring points of the submersible floating body 10 (the underwater falling point of the anchor chain) becomes close to the maximum, and the anchor chain 50 is arranged taut along the vertical direction while the semi-submersible floating body 10 is The entire offshore wind power plant, including, will catch the shaking caused by waves and wind.

Furthermore, since the anchor chain 50 is restrained within the chain guide pocket hole 70 and does not shake while the anchor chain 50 is submerged in water, it further minimizes the shaking of the floating body of the offshore wind power plant by waves and wind. can do it

As seen above, when the semi-submersible floating body of the offshore wind power generation facility is fixed to the sea using an anchor chain, the anchor chain 50 descends in the vertical direction by the fairleader 60 from the upper part of the floating body. And by allowing it to descend in a vertical direction toward the water through the chain guide pocket hole 70 after being extended, the anchor chain 50 is not a semi-submersible part, not a submersible position far away from the semi-submersible floating body 10 By entering the adjacent underwater position of the fluid 10, it is possible to fix the entire offshore wind power plant including the semi-submersible floating body 10, and accordingly shaking of the semi-submersible floating body (PITCHING, YAWING, ROLLING, etc.) It is possible to increase the power generation efficiency of wind power generation facilities by minimizing the

10: semi-submersible floating body 11: central floating body
12: circular floating body 13: connecting floating fluid
20: vertical support 22: anchor chain fixing bracket
30: base 40: wind generator
50: anchor chain 60: fair leader
61: guide bracket 62: guide roller
63: guide pipe 64: guide groove
65: rib for rigidity reinforcement 70: guide pocket hole
72: buffer guide projection 74: expansion hole section

Claims (5)

One central floating body 11, three circular floating bodies 12 arranged triangularly around the central floating body 11, and a connecting floating fluid connecting each circular floating body 12 and the central floating body 11 ( 13) consisting of a semi-submersible float (10); a vertical support 20 installed in a vertically standing state on the central floating body 11 and each circular floating body 12; a base 30 installed on the vertical support 20; a wind power generator 40 mounted on the central portion of the base 30; and an anchor chain fixing bracket 22 mounted on the upper surface of the vertical support 20. In the fixing method of an offshore wind power plant comprising,
The anchor chain 50 fixed to the anchor chain fixing bracket 22 is supported by the fairleader 60 installed on the outer surface of the vertical support 20 to guide and extend downward from the fairleader 60 in the vertical direction, ,
The anchor chain 50, which is guided in the vertical direction and extended downward from the fairleader 60, is passed through the guide pocket hole 70 formed in the circular floating body 12, and the anchor chain 50 is the guide pocket hole ( 70) to be guided in a vertical direction toward the water by
The fairleader 60 includes:
a pair of guide brackets 61 that are spaced apart from each other in the left and right directions on the outer surface of the vertical support 20;
a guide roller 62 connected between the inner surfaces of the guide bracket 61 to guide the anchor chain 50 in a vertical direction toward the water; and
a guide pipe 63 connected between the inner surfaces of the guide bracket 61 so as to be located behind the guide roller 62 to guide the anchor chain 50 in the outward direction of the guide roller 62;
A fixing method of an offshore wind power plant, characterized in that consisting of.
delete The method according to claim 1,
The guide roller 62 has a guide groove 64 into which the anchor chain 50 is inserted, characterized in that the fixing method of the offshore wind power plant.
The method according to claim 1,
A buffer guide protrusion 72 is formed on the outer circumferential surface of the entrance of the chain guide pocket hole 70 to buffer the contact impact of the anchor chain 50 and at the same time guide the anchor chain 50 into the chain guide pocket hole 70 A method of fixing an offshore wind power plant.
The method according to claim 1,
The lower portion of the chain guide pocket hole (70) is a method of fixing an offshore wind power plant, characterized in that it is formed as an expansion hole section (74) of a diameter gradually widening for easy passage of the anchor chain (50).

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