Semi-submersible stabilization floating platform and wind turbine generator

Abstract

The invention provides a semi-submersible type anti-rolling floating platform and a wind turbine generator. The semi-submersible type anti-rolling floating platform comprises a plurality of stepped floating barrels, anti-rolling layers, equipment layers and heaving plates. The stepped buoy comprises a first part, a second part and a third part, the first part is in an inverted cone shape, the second part is an equal-diameter section, and the third part is in a positive cone shape. The diameter of the lower end of the first part and the diameter of the upper end of the third part are equal to the diameter of the second part, and the taper of the third part is equal to that of the first part. The anti-rolling layer is connected with the bottom of the first part, and the anti-rolling layer is of a floating plate structure. The equipment layer is connected with the top of the first part, and hydrogen production equipment is placed on the equipment layer. And the heaving plate is connected with the bottom of the stepped third part. According to the semi-submersible anti-rolling floating platform, the stability of the platform during small-amplitude inclination is improved through the design of the stepped floating barrels and the additional arrangement of the anti-rolling layer.

Description

Technical Field

[0001] The invention belongs to the technical field of semi-submersible floating wind power platforms, and in particular relates to a semi-submersible anti-roll floating platform and a wind turbine generator set. Background Art

[0002] Floating wind power platforms can overcome the limitation that traditional fixed wind power must be built in shallow waters and close to land, allowing wind farms to be deployed in deep sea and offshore areas. However, while deep sea areas have more abundant and stable wind resources, they also face higher operation and maintenance costs and power transmission challenges.

[0003] In order to meet this challenge, floating wind power hydrogen production, which combines floating wind power with hydrogen production technology, can use the electricity generated by the wind power platform to directly electrolyze water to produce hydrogen, converting electrical energy into hydrogen energy. This method not only improves the utilization rate of wind power, but also realizes the diversified use of energy. At the same time, it can also avoid high transmission costs, effectively reduce the cost of floating wind power, and has higher economy and flexibility.

[0004] However, compared with the offshore environment, the deep sea environment is more severe. Due to the larger wave height in the marine environment, the wave load on the floating wind power equipment will be significantly enhanced, which not only increases the stress burden of the structure, but may also cause the floating body to produce violent swaying motion, greatly reducing the power generation efficiency of the wind turbine. The technology of floating wind power hydrogen production places higher requirements on the stability of the floating platform. During the hydrogen production process, it is necessary to ensure that the floating body can continuously and stably provide electricity to support the smooth progress of chemical reactions such as water electrolysis. If the movement of the floating body is too violent, it will directly affect the operating efficiency and safety of the electrolysis equipment, and may even lead to the failure of the entire hydrogen production process. Summary of the invention

[0005] The present invention aims to provide a semi-submersible anti-roll floating platform and a wind turbine, which can reduce the swaying and heaving motion of the floating body. The semi-submersible anti-roll floating platform improves the stability of the platform when it is slightly tilted by designing a stepped buoy and adding a layer of anti-roll layer, thereby increasing the power generation of the floating wind turbine. At the same time, the addition of an equipment layer reserves space for subsequent floating wind power hydrogen production.

[0006] The present invention provides a semi-submersible anti-rolling floating platform, comprising:

[0007] A plurality of stepped pontoons, wherein the stepped pontoons include a first portion, a second portion and a third portion, wherein the first portion is an inverted cone, the second portion is a section of equal diameter, the third portion is a forward cone, the diameter of the lower end of the first portion and the diameter of the upper end of the third portion are equal to the diameter of the second portion, the taper of the third portion is equal to the taper of the first portion, and the water plane is located at the second portion;

[0008] an anti-rolling layer, the anti-rolling layer being connected to the bottom of the first part and being a floating plate structure;

[0009] an equipment layer, the equipment layer being connected to the top of the first part and having hydrogen production equipment placed thereon;

[0010] A heave plate is connected to the bottom of the stepped third section.

[0011] In one embodiment, the heave plate includes a fourth part and a lower buoyancy body, the fourth part is an equal diameter section, the diameter of the fourth part is equal to the diameter of the lower end of the third part, and the lower buoyancy body is connected to the outer side wall of the fourth part.

[0012] In one embodiment, the diameter of the fourth portion is greater than the diameter of the second portion.

[0013] In one embodiment, a fifth portion is further disposed below the fourth portion, the fifth portion is in a positive cone shape, and the taper of the fifth portion is greater than the taper of the third portion.

[0014] In one embodiment, the fifth portion is steel or concrete.

[0015] In one embodiment, ballast is provided in both the stepped buoy and the heave plate. The ballast is divided into fixed ballast and water ballast. The ballast is provided to control the water plane in the middle of the second part.

[0016] In one embodiment, the length of the second portion is 9 meters, the length of the second portion above the waterline is 4 meters, the length of the second portion below the waterline is 5 meters, and the anti-rolling layer is located 4 meters above the waterline;

[0017] The length direction is perpendicular to the waterline plane.

[0018] In one embodiment, the anti-roll layer is made of rubber or high-strength foam material.

[0019] In one embodiment, the equipment layer includes a plurality of walkways, both ends of each walkway are connected to the top of the first part, and a cover plate is provided above the plurality of walkways.

[0020] The present invention also proposes a wind turbine generator set, comprising:

[0021] A semi-submersible anti-rolling floating platform as described above;

[0022] A tower mounted on the stepped buoy of the semi-submersible anti-roll floating platform;

[0023] Wind turbines, installed on top of the tower;

[0024] The blade assembly is installed on the wind turbine generator set.

[0025] The beneficial effects of a semi-submersible anti-roll floating platform and a wind turbine generator set of the present invention are as follows:

[0026] This solution can effectively reduce the heave and swaying motion of the floating body, significantly reduce the cost of floating wind power equipment and improve the power generation efficiency of floating wind power equipment, and leave space for equipment deployment for floating wind power hydrogen production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of a wind turbine generator set according to an embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of the side structure of a wind turbine generator set according to an embodiment of the present invention;

[0029] Figure 3 1 is a schematic structural diagram of a semi-submersible anti-rolling floating platform according to an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the stability of the floating platform.

[0031] Reference numerals

[0032] 1. Semi-submersible anti-roll floating platform; 11. Stepped pontoon; 111. First part; 112. Second part; 113. Third part; 114. Fourth part; 115. Fifth part; 12. Heave plate; 13. Anti-roll layer; 14. Equipment layer; 2. Tower; 3. Wind turbine generator set; 4. Blade assembly. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0034] like Figure 1 As shown, the present invention proposes a semi-submersible anti-roll floating platform 1, comprising: a plurality of stepped buoys 11, an anti-roll layer 13, an equipment layer 14 and a heave plate 12. Since the floating wind power equipment faces the deep sea, the waves in the deep sea are large, and the floating wind turbine itself has six degrees of freedom, the present invention designs a stepped buoy 11. Figure 3 As shown, the stepped buoy 11 includes a first portion 111, a second portion 112 and a third portion 113. The first portion 11 is an inverted cone, that is, the upper end has a large diameter and the lower end has a small diameter. The inverted cone can effectively reduce heave. The second portion 112 is a section of equal diameter. The waterline L is located at the second portion 112. Figure 2 . The diameter of the second part 112 is smaller, which can reduce the water plane and reduce the wave load. The third part 113 is a positive cone, that is, the diameter of the upper end is small and the diameter of the lower end is large. The diameter of the lower end of the first part 111 and the diameter of the upper end of the third part 113 are equal to the diameter of the second part 112. The taper of the third part 113 is equal to the taper of the first part 111. Because the upper part of the third part 113 is smaller and the lower part is larger, the center of gravity of the entire shape will be lower than that of the equal diameter, thereby improving the stability of the entire floating body. If ballast is added, the same principle applies, which will cause the center of gravity to be lower. The first part 111 does not necessarily need ballast water, but only plays a role in reducing the heaving motion. The taper depends on the strength required at the bottom of the tower, thereby determining the diameter of the upper end of the first part 111. The diameter of the lower end of the first part 111 is consistent with that of the second part 112. If the strength is sufficient, it is better to choose a smaller one, generally about 10 meters. In this embodiment, preferably, the taper of the third part 113 is 10 to 15 degrees with the taper of the first part 111. The stepped buoy 11 can effectively reduce the heave motion of the platform and greatly enhance the stability of the floating body. In this embodiment, the semi-submersible anti-rolling floating platform 1 includes three stepped buoys 11, see Figure 1 .

[0035] The anti-rolling layer 13 is connected to the bottom of the first part 111, and the anti-rolling layer 13 is a floating plate structure. Figure 2 As shown, the anti-rolling layer 13 is connected to the bottom of the first part 111. The anti-rolling layer 13 is arranged close to the water plane L and is located above the water plane L. In this embodiment, the anti-rolling layer 13 is a solid structure. During the shaking or heaving process, the entire anti-rolling layer acts like a life buoy. In this embodiment, the anti-rolling layer 13 is preferably made of rubber or high-strength foam material, which can provide a large number of floats to suppress the movement of the floating platform.

[0036] The floating body will sway to a certain extent when it is affected by the coupling of wind, waves and current, so the stability needs to be checked. Figure 4 It is the force diagram of the platform when it is slightly tilted by external force. The waterline changes from W0L0 to W1L1, and the center of buoyancy moves from B0 to B. At this time, the displacement △ and the position of the center of gravity G remain unchanged. The gravity and buoyancy no longer act on the same plumb line, thus generating a moment called the restoring moment M. s , the intersection point M of the front and rear buoyancy lines is called the metacenter, which can be expressed by the following formula:

[0037] Ms=△·GM·sinφ;

[0038] GM = KM - KG;

[0039]

[0040] Where △ is the platform displacement; KM is the height of the metacenter from the baseline; KG is the height of the center of gravity from the baseline; P i is the loading weight of each part; Z i The installation of the anti-rolling layer 13 near the waterline can make the buoyancy more dispersed in the horizontal direction, obtain greater buoyancy when tilting occurs, and effectively increase the height of the metacentric distance from the baseline, increase the restoring moment KM when a small tilt occurs, and suppress the tilt of the platform.

[0041] The equipment layer 14 is connected to the top of the first part 111, and the equipment layer 14 is provided with hydrogen production equipment. Figure 3 As shown, the equipment layer 14 is connected to the top of the outer surface of the stepped buoy 11. The platform is not necessarily the entire triangular area. The equipment layer 14 is used to set up hydrogen production equipment. The equipment layer 14 reserves space for the subsequent placement of hydrogen production equipment. Specifically, the equipment layer 14 includes multiple walkways, and both ends of each walkway are connected to the top of the first part 111. A cover plate is arranged above the multiple walkways, and the cover plate is welded to the walkway.

[0042] The heave plate 12 is connected to the bottom of the third part 113. In this embodiment, the heave plate 12 includes a fourth part 114 and a lower buoy 116. The fourth part 114 is an equal diameter section. The diameter of the fourth part 114 is equal to the diameter of the lower end of the third part 113. The lower buoy 116 is connected to the outer wall of the fourth part 114. The diameter of the fourth part 114 is greater than the diameter of the second part 112. The second part 112 is located at the water plane L position. The smaller the diameter, the less affected by the wave force. The fourth part 114 is located lower and has a larger diameter, which can move the center of gravity of the entire buoy downward. A fifth part 115 is also provided below the fourth part 114. The fifth part 115 is a positive cone, and the taper of the fifth part 115 is greater than the taper of the third part 113. The taper of the fifth part 115 is greater than the taper of the third part 113. The greater taper of the fifth part 115 is also for moving the center of gravity downward. The lower the center of gravity, the better the stability of the buoy. The material of the fifth portion 115 can be steel or concrete.

[0043] Ballast is provided in both the stepped buoy 11 and the heave plate 12. The ballast is divided into fixed ballast (cement block) and water ballast. The ballast is provided to control the water plane L in the middle of the second part 112 in a static state. In this embodiment, the length of the second part 112 is 9 meters. Among them, the length of the second part 112 above the water plane L is 4 meters, and the length of the second part 112 below the water plane L is 5 meters, and the direction of the length is perpendicular to the water plane L. At this time, the anti-rolling layer 13 is located 4 meters above the water plane, which can control the heave motion of the floating platform to be less than 4 meters, and reduce the pitch and roll motions.

[0044] like Figure 1As shown, the present invention also proposes a wind turbine generator set, comprising:

[0045] As described above, the semi-submersible anti-roll floating platform 1, the tower 2, the wind turbine generator set 3 and the blade assembly 4. The tower 2 is installed on the stepped buoy 11 of the semi-submersible anti-roll floating platform 1, the wind turbine generator set 3 is installed on the top of the tower 2, and the blade assembly 4 is installed on the wind turbine generator set 3.

[0046] The beneficial effects of a semi-submersible anti-roll floating platform and a wind turbine generator set of the present invention are as follows:

[0047] This solution can effectively reduce the heave and swaying motion of the floating body, significantly reduce the cost of floating wind power equipment and improve the power generation efficiency of floating wind power equipment, and leave space for equipment deployment for floating wind power hydrogen production.

[0048] The above-described embodiments are only further explanations of the present invention, and are not intended to limit the present invention in other forms. The present invention may also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding modifications and changes according to the present invention, but these corresponding modifications and changes should all fall within the protection scope of the present invention.

Claims

1. A semi-submersible anti-roll floating platform, characterized in that: include: A plurality of stepped pontoons, wherein the stepped pontoons include a first portion, a second portion and a third portion, wherein the first portion is an inverted cone, the second portion is a section of equal diameter, the third portion is a forward cone, the diameter of the lower end of the first portion and the diameter of the upper end of the third portion are equal to the diameter of the second portion, the taper of the third portion is equal to the taper of the first portion, and the water plane is located at the second portion; an anti-rolling layer, the anti-rolling layer being connected to the bottom of the first part and being a floating plate structure; an equipment layer, the equipment layer being connected to the top of the first part and having hydrogen production equipment placed thereon; A heave plate is connected to the bottom of the stepped third section.

2. The semi-submersible anti-roll floating platform according to claim 1, characterized in that: The heave plate includes a fourth part and a lower floating body. The fourth part is an equal diameter section. The diameter of the fourth part is equal to the diameter of the lower end of the third part. The lower floating body is connected to the outer side wall of the fourth part.

3. The semi-submersible anti-roll floating platform according to claim 2, characterized in that: The fourth portion has a diameter greater than a diameter of the second portion.

4. The semi-submersible anti-rolling floating platform according to claim 2, characterized in that: A fifth part is further arranged below the fourth part. The fifth part is in a positive cone shape, and the taper of the fifth part is greater than the taper of the third part.

5. The semi-submersible anti-roll floating platform according to claim 4, characterized in that: The fifth part is steel or concrete.

6. The semi-submersible anti-roll floating platform according to claim 1, characterized in that: Ballast is arranged in both the stepped buoy and the heave plate. The ballast is divided into fixed ballast and water ballast. The ballast is arranged to control the water plane in the middle of the second part.

7. The semi-submersible anti-roll floating platform according to claim 1, characterized in that: The length of the second part is 9 meters, the length of the second part above the waterline is 4 meters, the length of the second part below the waterline is 5 meters, and the anti-rolling layer is located 4 meters above the waterline; The length direction is perpendicular to the waterline plane.

8. The semi-submersible anti-rolling floating platform according to claim 1, characterized in that: The anti-roll layer is made of rubber or high-strength foam material.

9. The semi-submersible anti-rolling floating platform according to claim 1, characterized in that: The equipment layer includes a plurality of walkways, both ends of each walkway are connected to the top of the first part, and a cover plate is arranged above the plurality of walkways.

10. A wind turbine generator set, characterized in that: include: A semi-submersible anti-rolling floating platform as claimed in any one of claims 1 to 9; A tower mounted on the stepped buoy of the semi-submersible anti-roll floating platform; Wind turbines, installed on top of the tower; The blade assembly is installed on the wind turbine generator set.

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