Offshore icebreaking structure and icebreaking system

Abstract

The utility model provides an offshore icebreaking structure and an icebreaking system, the icebreaking structure comprises a first frustum, a second frustum and a third frustum which are sequentially arranged from top to bottom, the cross sectional area of the first frustum is sequentially increased from top to bottom, the cross sectional area of the second frustum is sequentially increased from top to bottom, and the cross sectional area of the third frustum is sequentially increased from top to bottom. The cross sectional area of the third frustum is sequentially reduced from top to bottom, the bottom plane of the first frustum and the top plane of the second frustum are the same in shape and size, the vertex angle of the first frustum is smaller than that of the second frustum, the bottom of the third frustum is connected with an anchor chain, and the anchor chain is used for being connected with a seabed mud surface in an anchoring mode; the effect of destroying the sea ice can be effectively achieved by adopting a small project amount, the influence of the sea ice on offshore photovoltaic structures, offshore wind power structures and other structures can be greatly reduced, and the safety of offshore structural bodies is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore power generation, in particular to an offshore ice-breaking structure and an ice-breaking system. Background Art

[0002] The statements in this section merely provide background technology related to the present invention and do not necessarily constitute prior art.

[0003] At present, various regions have successively focused on developing offshore new energy power generation industries, such as offshore photovoltaics, offshore wind power, etc. In some sea areas, offshore new energy projects are facing the problem of sea ice collision, and offshore photovoltaics are particularly severely affected by sea ice. In response to the sea ice problem, if the main body of the offshore new energy project adopts its own ice resistance method, it may cause a substantial increase in the cost of the main structure, affecting the project's rate of return.

[0004] The inventors found that the current icebreaking structure is basically set on the main structure of the offshore new energy project. For example, an icebreaking structure is set on the offshore wind power single pile foundation. The diameter of the offshore wind power foundation is generally more than 7m, so the size of the icebreaking device is also more than 7m, which is costly and requires a large amount of engineering. Since the load caused by sea ice on the structure is proportional to the ice-facing width of the structure, the traditional icebreaking structure bears a large ice load, which further increases the engineering workload of the traditional icebreaking structure. Utility Model Content

[0005] In order to address the deficiencies of the prior art, the utility model provides an offshore icebreaking structure and an icebreaking system, which can effectively break sea ice with a relatively small amount of engineering work, can significantly reduce the impact of sea ice on offshore photovoltaic, offshore wind power and other structures, and improve the safety of offshore structures.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides an offshore ice-breaking structure.

[0008] A marine icebreaking structure comprises: a first frustum, a second frustum and a third frustum arranged in sequence from top to bottom, the cross-sectional area of ​​the first frustum increases in sequence from top to bottom, the cross-sectional area of ​​the second frustum increases in sequence from top to bottom, the cross-sectional area of ​​the third frustum decreases in sequence from top to bottom, the bottom plane of the first frustum is the same shape and size as the top plane of the second frustum, the top angle of the first frustum is smaller than the top angle of the second frustum, and the bottom of the third frustum is connected to an anchor chain, which is used to anchor to the seabed mud surface.

[0009] As a further limitation of the first aspect of the present utility model, the first frustum, the second frustum and the third frustum are all circular frustums.

[0010] As a further limitation of the first aspect of the present utility model, the first frustum, the second frustum and the third frustum are all prisms.

[0011] As a further limitation of the first aspect of the present invention, the vertex angle of the first frustum is the vertex angle of the side surface of the first frustum extending upward and intersecting at a point, and the vertex angle of the second frustum is the vertex angle of the side surface of the second frustum extending upward and intersecting at a point.

[0012] As a further limitation of the first aspect of the present invention, the vertex angle of the second frustum is the same as the vertex angle of the third frustum.

[0013] As a further limitation of the first aspect of the present invention, the vertex angle of the third frustum is the vertex angle of the side surfaces of the third frustum extending downward and intersecting at a point.

[0014] As a further limitation of the first aspect of the utility model, the first frustum is fixedly connected to the second frustum, and the first frustum, the second frustum and the third frustum are all hollow structures with ribs connected inside.

[0015] As a further limitation of the first aspect of the utility model, the second frustum and the third frustum are integrally formed, and the connecting portion of the second frustum and the third frustum is a hollow cylindrical structure.

[0016] In a second aspect, the utility model provides an offshore icebreaking system, comprising a plurality of offshore icebreaking structures as described in the first aspect of the utility model, wherein each offshore icebreaking structure is arranged in a single row.

[0017] In a third aspect, the utility model provides an offshore icebreaking system, comprising a plurality of offshore icebreaking structures as described in the first aspect of the utility model, wherein each offshore icebreaking structure is arranged in double rows.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model innovatively proposes an offshore ice-breaking structure, which can effectively destroy sea ice with a relatively small amount of engineering work, and can greatly reduce the impact of sea ice on offshore photovoltaic, offshore wind power and other structures, thereby improving the safety of offshore structures.

[0020] 2. The utility model innovatively proposes an offshore ice-breaking structure, which is composed of three cones arranged in sequence from top to bottom. The top angle of the first cone is smaller than that of the second cone. The impact force of sea ice, pressure under sea ice, buoyancy and anchor chain tension are comprehensively considered, so that sea ice can be effectively destroyed.

[0021] 3. The utility model innovatively proposes an offshore ice-breaking structure, wherein the first cone, the second cone and the third cone are all hollow structures with annular and radial ribs connected internally, thereby significantly saving materials and reducing engineering workload.

[0022] 4. The utility model innovatively proposes an offshore icebreaking system. According to the maximum ice loads that offshore photovoltaic, offshore wind power and other structures can withstand, the icebreaking structure can be arranged in a single layer or double layer, thereby improving the icebreaking efficiency.

[0023] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 A schematic diagram of an ice-breaking structure provided in Example 1 of the utility model;

[0026] Figure 2 A front view of the ice-breaking structure provided in Example 1 of the utility model;

[0027] Figure 3 A schematic diagram of a single-row ice-breaking system provided in Example 2 of the utility model;

[0028] Figure 4 A schematic diagram of a double-row ice-breaking system provided in Example 3 of the utility model;

[0029] Among them, 1-the first cone; 2-the second cone; 3-the third cone; 4-sea level; 5-sea ice; 6-icebreaking structure; 7-anchor chain; 8-offshore photovoltaic array. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] In the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] Embodiment 1:

[0034] In this implementation, an offshore ice-breaking structure is proposed, such as Figure 1 and Figure 2As shown, it includes: a first frustum 1, a second frustum 2 and a third frustum 2 arranged in sequence from top to bottom, the cross-sectional area of ​​the first frustum 1 increases in sequence from top to bottom (i.e., a positive frustum), the cross-sectional area of ​​the second frustum 2 increases in sequence from top to bottom (i.e., a positive frustum), the cross-sectional area of ​​the third frustum 2 decreases in sequence from top to bottom (i.e., an inverted frustum), the bottom plane of the first frustum 1 is the same shape and size as the top plane of the second frustum 2, the vertex angle of the first frustum 1 is smaller than the vertex angle of the second frustum 2, the bottom of the third frustum 2 is connected to an anchor chain 7, and the anchor chain 7 is used for anchoring to the seabed mud surface. The icebreaking structure is anchored to the seabed mud surface by the anchor chain 7, so that the position of the icebreaking structure can be effectively fixed.

[0035] In the present implementation, preferably, the first frustum 1, the second frustum 2 and the third frustum 2 are all circular frustums; it is understandable that in some other implementations, the first frustum 1, the second frustum 2 and the third frustum 2 are all prisms, such as quadrangular frustums, pentagonal frustums, hexagonal frustums, etc., and technicians in this field can make a choice according to the specific working conditions, which will not be repeated here.

[0036] In this implementation, preferably, the vertex angle of the first frustum 1 is the vertex angle of the side surface of the first frustum 1 extending upward and intersecting at a point, and the vertex angle of the second frustum 2 is the vertex angle of the side surface of the second frustum 2 extending upward and intersecting at a point.

[0037] In this implementation, preferably, the vertex angle of the second frustum 2 is the same as the vertex angle of the third frustum 2 , and the vertex angle of the third frustum 2 is the vertex angle of the side surface of the third frustum 2 extending downward and intersecting at a point.

[0038] In this implementation, preferably, the first cone 1 is fixedly connected to the second cone 2 or can be integrally formed, and the first cone 1, the second cone 2 and the third cone 2 are all hollow structures with ribs connected inside (reversing ribs and radial ribs can be applied).

[0039] In this implementation, preferably, the second frustum 2 and the third frustum 2 are integrally formed, and the connecting portion between the second frustum 2 and the third frustum 2 is a hollow cylindrical structure.

[0040] In this implementation, the first cone 1 protruding at the top is the main ice-breaking structure. The first cone 1 is exposed above the sea level 4, a part of the second cone 2 is exposed above the sea level 4, and the third cone 2 is below the sea level 4. The first cone 1 has the smallest size and mainly plays a role in breaking ice. The second cone 2 is used to break ice, maintain structural stability and provide buoyancy, and the third cone 2 mainly provides buoyancy.

[0041] When the sea ice 5 hits the structure, the structure will be affected by three types of forces: the force of the sea ice 5, the buoyancy of the water body, and the tension of the anchor chain 7. The sea ice 5 first contacts the second cone 2. At this time, the sea ice 5 will generate a downward force F2 on the second cone 2 due to its own weight. When the sea ice 5 continues to move forward and contacts the first cone 1, it will generate a horizontal force F1 on the first cone 1. According to the moment balance, the downward pressure of the sea ice 5 on the second cone 2 will generate a clockwise bending moment, which is opposite to the moment generated by the impact force F1 of the sea ice 5. This can reduce the resultant moment generated by the sea ice 5 on the structure, thereby effectively maintaining the stability of the structure.

[0042] Embodiment 2:

[0043] This implementation provides an offshore icebreaking system, including a plurality of offshore icebreaking structures 7 described in Embodiment 1 of the utility model, according to the maximum ice load that offshore photovoltaic, offshore wind power and other structures can withstand, such as Figure 3 As shown, each offshore ice-breaking structure is arranged in a single row to reduce the impact on the offshore photovoltaic array 8.

[0044] Embodiment 3:

[0045] This implementation provides an offshore icebreaking system, including a plurality of offshore icebreaking structures 7 described in Embodiment 1 of the utility model, according to the maximum ice load that offshore photovoltaic, offshore wind power and other structures can withstand, such as Figure 4 As shown, each offshore ice-breaking structure is arranged in double rows to reduce the impact on the offshore photovoltaic array 8.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An offshore icebreaking structure, characterized in that: include: The first frustum, the second frustum and the third frustum are arranged in sequence from top to bottom, the cross-sectional area of ​​the first frustum increases in sequence from top to bottom, the cross-sectional area of ​​the second frustum increases in sequence from top to bottom, the cross-sectional area of ​​the third frustum decreases in sequence from top to bottom, the bottom plane of the first frustum is the same shape and size as the top plane of the second frustum, the top angle of the first frustum is smaller than the top angle of the second frustum, and the bottom of the third frustum is connected to an anchor chain, which is used to anchor to the seabed mud surface.

2. The offshore icebreaking structure according to claim 1, characterized in that: The first frustum, the second frustum and the third frustum are all frustums of circular cones.

3. The offshore icebreaking structure according to claim 1, characterized in that: The first frustum, the second frustum and the third frustum are all prism-shaped pyramids.

4. The offshore icebreaking structure according to claim 2 or 3, characterized in that: The vertex angle of the first frustum is the vertex angle of the side surface of the first frustum extending upward and intersecting at a point, and the vertex angle of the second frustum is the vertex angle of the side surface of the second frustum extending upward and intersecting at a point.

5. The offshore icebreaking structure according to claim 2 or 3, characterized in that: The vertex angle of the second frustum is the same as the vertex angle of the third frustum.

6. The offshore icebreaking structure according to claim 5, characterized in that: The vertex angle of the third frustum is the vertex angle of the side surface of the third frustum extending downward and intersecting at a point.

7. The offshore icebreaking structure according to claim 1, characterized in that: The first frustum is fixedly connected to the second frustum, and the first frustum, the second frustum and the third frustum are all hollow structures with ribs connected inside.

8. The offshore icebreaking structure according to claim 1, characterized in that: The second frustum and the third frustum are integrally formed, and the connecting portion of the second frustum and the third frustum is a hollow cylindrical structure.

9. A marine icebreaking system, characterized in that: The invention comprises a plurality of offshore icebreaking structures as described in any one of claims 1 to 8, wherein each offshore icebreaking structure is arranged in a single row.

10. A marine icebreaking system, characterized in that: The invention comprises a plurality of offshore icebreaking structures as described in any one of claims 1 to 8, wherein each offshore icebreaking structure is arranged in double rows.

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