CN221251645U - Tension leg type floating platform and floating wind power system - Google Patents

Abstract

The utility model discloses a tension leg type floating platform and a floating wind power system, wherein the tension leg type floating platform comprises: the floating bridges form a polygonal structure, each corner of the polygonal structure is provided with a pontoon, and every two adjacent pontoons are connected through the floating bridge; the number of the extension arms is consistent with that of the pontoons, each extension arm is connected with each pontoon and corresponds to each pontoon one by one, and one end of each extension arm far away from the polygonal structure is provided with a tension cable; the bottom of the supporting frame is connected to the top end of each pontoon and is supported by each pontoon. According to the utility model, the distance between the tension cable and the pontoon is increased through the extension arm, so that the pontoon can be reduced in water flow load, stress and fatigue, and the heave, roll and pitch movement periods of the tension leg type floating platform are reduced, thereby improving the stability and the overall performance of the tension leg type floating platform.

Description

Tension leg type floating platform and floating wind power system

Technical Field

The utility model relates to the technical field of offshore wind power generation, in particular to a tension leg type floating platform and a floating wind power system.

Background

The tension leg platform (Tension Leg Platform, TLP) is a vertically moored floating structure, which is usually used for offshore oil and gas production, and when the TLP is applied to the offshore oil exploitation or gas production field, because the equipment for exploiting oil or gas is relatively huge, large in quantity and heavy, the equipment occupies a wide area, so that the whole structure of the TLP is also designed to be larger to accommodate a plurality of equipment, the supporting effect can be ensured by using more steel, the TLP has large self weight and large body after being combined with the large equipment, the wind and wave resistance capability is strong at sea, and the stability of the TLP is high, and the tension ropes on the TLP are usually tied on the pontoon or the corners/ends of the floating bridge structure directly.

However, when the TLP is applied to the offshore wind power generation field, because the area occupied by the wind power generator is small and the weight is much smaller than that of equipment for exploiting petroleum or natural gas, in consideration of the cost problem, the TLP structure generally used for the wind power generator in the prior art is smaller and the steel consumption is smaller, the TLP and the wind power generator are combined, the TLP has smaller body type and smaller weight, the capability of resisting wind and waves at sea is weaker, the stability of the TLP is poorer, and when the tension ropes on the TLP are directly tied on the pontoon or the corners/ends of the pontoon bridge structure, the pontoon or the pontoon bridge is subjected to large load, large stress and high fatigue, so that the stability and the performance of the whole tension leg platform are poor.

There is thus a need for improvements and improvements in the art.

Disclosure of utility model

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a tension leg type floating platform and a floating wind power system, which are aimed at solving the problems of the prior art that the TLP and the wind power generator are combined to have smaller body and smaller weight, and when the tension ropes on the TLP are directly tied on the pontoon or the corner/end of the floating bridge structure, the pontoon or the floating bridge is subjected to large load, large stress and high fatigue, so that the stability and performance of the whole tension leg platform are poor.

The technical scheme adopted for solving the technical problems is as follows:

in a first aspect, embodiments of the present utility model provide a tension leg floating platform comprising:

The floating bridges are formed into a polygonal structure, each corner of the polygonal structure is provided with a pontoon, and every two adjacent pontoons are connected through the floating bridge;

The number of the extension arms is consistent with that of the pontoons, each extension arm is connected with each pontoon and corresponds to each pontoon one by one, and one end of each extension arm far away from the polygonal structure is provided with a tension cable;

The bottom of the supporting frame is connected to the top end of each pontoon and is supported by each pontoon.

As a further improvement technical scheme, one end of the extension arm, which is close to the polygonal structure, is connected with the bottom end side part of the pontoon, and the extension arm is vertical to the pontoon.

As a further improvement technical scheme, the included angles between every two adjacent extension arms are consistent in size.

As a further improvement technical scheme, the side lengths of all the polygonal structures are consistent, and the included angles between every two adjacent floating bridges are consistent.

As a further improvement technical scheme, the pontoon is cylindrical, the pontoon bridge is connected perpendicularly to the bottom side portion of the pontoon.

As a further improvement technical scheme, the support frame comprises a base, a support rod and a connecting piece; the number of the bases and the number of the supporting rods are consistent with that of the pontoons, the bases are respectively and fixedly arranged on the pontoons in one-to-one correspondence, one end of each supporting rod is respectively connected with the outer side of the connecting piece, and the other end of each supporting rod is respectively connected with the bases in one-to-one correspondence.

As a further improvement, the extension arm is of a cylindrical structure and is hollow inside.

As a further improvement technical scheme, one end of the tension cable is connected with the end face of one end, far away from the polygonal structure, of the extension arm.

As a further improvement, the tension leg type floating platform further comprises:

The tension cable connector is rotatably arranged on the end face of one end, far away from the polygonal structure, of the extension arm, and one end of the tension cable is connected with the tension cable connector.

In a second aspect, the embodiment of the utility model further provides a floating wind power system, which comprises a wind power generator and any tension leg type floating platform, wherein the bottom end of the wind power generator is fixedly connected with the top end of the supporting frame.

Compared with the prior art, the embodiment of the utility model has the following advantages:

The embodiment of the utility model provides a tension leg type floating platform, which comprises the following components: the floating bridges are formed into a polygonal structure, each corner of the polygonal structure is provided with a pontoon, and every two adjacent pontoons are connected through the floating bridge; the number of the extension arms is consistent with that of the pontoons, each extension arm is connected with each pontoon and corresponds to each pontoon one by one, and one end of each extension arm far away from the polygonal structure is provided with a tension cable; the bottom of the supporting frame is connected to the top end of each pontoon and is supported by each pontoon. According to the utility model, the distance between the tension cable and the pontoon is increased through the extension arm, so that the pontoon can be reduced in water flow load, stress and fatigue, and the heave, roll and pitch movement periods of the tension leg type floating platform are reduced, thereby improving the stability and the overall performance of the tension leg type floating platform.

Drawings

Fig. 1 is a schematic perspective view of a tension leg floating platform according to the present utility model;

Fig. 2 is a second perspective view of a tension leg floating platform according to the present utility model;

fig. 3 is a schematic perspective view of a floating wind power system according to the present utility model.

In the figure: 1. a floating bridge; 2. a pontoon; 3. an extension arm; 4. tension ropes; 5. a support frame; 501. a base; 502. a support rod; 503. a connecting piece; 6. a tension cable connector; 7. a wind power generator.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Embodiment one:

As shown in fig. 1-2, the tension leg type floating platform comprises: the floating bridges 1 are formed into a polygonal structure, each corner of the polygonal structure is provided with a pontoon 2, and every two adjacent pontoons 2 are connected through the floating bridge 1; the number of the extension arms 3 is consistent with that of the pontoons 2, the extension arms 3 are respectively connected with the pontoons 2 in a one-to-one correspondence manner, and tension ropes 4 are respectively arranged at one ends of the extension arms 3, which are far away from the polygonal structure; and the bottom ends of the supporting frames 5 are connected to the top ends of the pontoons 2 and are supported by the pontoons 2.

In this embodiment, the tension leg type floating platform includes a plurality of floating bridges 1, a plurality of pontoons 2, a plurality of extension arms 3, a plurality of tension ropes 4 and a supporting frame 5; the number of the floating bridges 1, the floating pontoons 2, the extension arms 3 and the tension ropes 4 are consistent, the sizes of the floating bridges 1, the floating pontoons 2, the extension arms 3 and the tension ropes 4 are consistent, the floating bridges 1 form a plurality of sides of the polygonal structure, each corner of the polygonal structure is respectively provided with one floating pontoon 2, the floating bridges 1 are welded with the floating pontoons 2 and are used for providing buoyancy, each floating pontoon 2 is respectively connected with one extension arm 3, the extension lines of the extension arms 3 are intersected at the center point of the polygonal structure, the tension ropes 4 are connected to one end of each extension arm 3, which is far away from the polygonal structure, the bottom end of the supporting frame 5 is connected to the top end of each floating pontoon 2, and the floating pontoons 2 are supported on the sea surface. In the utility model, the extension arm 3 with buoyancy is adopted to extend the plane range of the whole platform, so that the translation, rotation movement and fatigue load of the tension leg type floating platform can be reduced, and meanwhile, compared with the traditional tension leg platform, the steel consumption can be reduced, and the cost is reduced; the extension arm 3 separates the tension cable 4 from the pontoons 2/pontoons 1 to optimize the stability of the tension leg type floating platform during the transportation and installation at sea and the overall performance in the use process, each pontoon 2 comprises a water part and a water part, each pontoon 1 and each pontoon 2 form an open moon pool area, so that cables or other parts are conveniently fixed in the moon pool area, and the overall structural stability of the tension leg type floating platform is enhanced; the distance between the tension rope 4 and the pontoon 2 is increased by the extension arm 3, so that the pontoon 2 is reduced in water flow load, stress and fatigue, and the heave, roll and pitch movement periods of the tension leg type floating platform are reduced, thereby improving the stability and overall performance of the tension leg type floating platform. At the same time, the ratio between the volume of pontoon 2 and the volume of pontoon 1 can be optimized by means of the extension arm 3 to improve the hydrodynamic counteracting effect. The extension arms 3 also help stabilize the hull during offshore installations and increase the weight efficiency of the hull (as compared to conventional TLPs).

As a further solution, one end of the extension arm 3 close to the polygonal structure is connected to the bottom side of the pontoon 2, and the extension arm 3 is perpendicular to the pontoon 2. Specifically, when the pontoon 2 is applied to the sea surface, the pontoon 2 is vertical to the sea surface, the extension arm 3 floats on the sea surface parallel to the sea surface, and one end of the extension arm 3 is welded and fixed with the pontoon 2 vertically. According to the utility model, on the premise of keeping the small size of the tension leg floating platform (the distance between the pontoons is referred to herein), the distance between the tension ropes is increased through the extension arm with a certain length, so that the heave, roll and pitch motions of the tension leg floating platform are reduced, and the stability, hydrodynamic performance, structural strength and fatigue performance of the platform are improved.

As a further solution, the angles between each two adjacent extension arms 3 are identical. Specifically, the polygon structure is an equilateral triangle structure, each extension arm 3 is connected to three corners of the equilateral triangle respectively, an included angle between each two adjacent extension arms 3 is 120 degrees, and when the other end of each tension cable 4 is anchored, the shock load born by the connection part of each extension arm 3 and the pontoon 2 is consistent. The cross section of the extension arm 3 can be one of a circle, a square, a rectangle or any polygon, the inside is an enclosed space, and the construction material can be a steel structure, a concrete structure or a steel reinforced concrete structure.

In this embodiment, the sides of the polygonal structure are identical, and the included angles between two adjacent floating bridges 1 are identical, that is, the polygonal structure is an equilateral structure, for example, an equilateral triangle, square or regular hexagon, and the like, and the equilateral structure is adopted to uniformly stress the platform, reduce the influence caused by the torrent load, and enhance the balance stability.

As a further solution, the pontoon 2 is cylindrical, and the pontoon 1 is vertically connected to the bottom side of the pontoon 2.

As a further solution, the supporting frame 5 includes a base 501, a supporting rod 502, and a connecting member 503; the number of the bases 501 and the number of the supporting rods 502 are consistent with that of the pontoons 2, the bases 501 are respectively and fixedly arranged on the pontoons 2 and are in one-to-one correspondence, one end of each supporting rod 502 is respectively connected with the outer side of the connecting piece 503, and the other end of each supporting rod 502 is respectively connected with each base 501 and is in one-to-one correspondence. Specifically, the connecting piece 503 is disposed above the center point of the polygonal structure, and the supporting rod 502 is disposed obliquely or horizontally, so that when the supporting rod 502 is disposed horizontally, the center of gravity of the connecting piece 503 can be properly lowered, and the stability of the platform structure is enhanced.

In this embodiment, the extension arm 3 has a cylindrical structure and is hollow inside. In particular, the specific shape of the pontoon 2, pontoon 1 and extension arms 3 is determined according to design criteria and choice. Any regular or irregular geometry is acceptable, including but not limited to having a circular cross-section, square cross-section, rectangular cross-section, elliptical cross-section, triangular cross-section, pentagonal cross-section, or other cross-sectional shape. Generally, the preferred cross-sections of the pontoon 2 and the pontoon 1 are circular cross-sections, square cross-sections, pentagonal cross-sections or octagonal cross-sections.

As a further solution, one end of the tension cable 4 is connected to the end surface of the extension arm 3 remote from the end of the polygonal structure. The conventional tension leg type platform generally fixes the tension rope 4 on the bottom side of the platform, so that the tension rope 4 is inconvenient to replace when immersed in seawater, and therefore, the tension rope 4 is fixed on the side end surface of the extension arm 3, so that the replacement is convenient.

As a still further aspect, the tension leg floating platform further includes:

The tension cable connector 6, the tension cable connector 6 is rotatably arranged on the end face of the extension arm 3, which is far away from one end of the polygonal structure, and one end of the tension cable 4 is connected with the tension cable connector 6. The tension cable connector 6 can be made of any one of rubber, high-strength steel plates or high-strength forgings, and the tension cable connector 6 and the extension arm 3 are hinged, so that bending moment between the tension cable connector 6 and the extension arm 3 is decoupled, the tension cable connector 6 can freely rotate on the extension arm 3, and fatigue degree between the tension cable connector 6 and the extension arm 3 is reduced. And the extension arm 3 minimizes wave and water loads applied to the pontoon 2 and the pontoon 1, improving the fatigue life of the tension rope connector 6.

Embodiment two:

As shown in fig. 3, the embodiment of the present utility model further provides a floating wind power system, which includes a wind power generator 7 and the tension leg type floating platform according to any one of the first embodiment, wherein the bottom end of the wind power generator 7 is fixedly connected with the top end of the supporting frame 5.

In summary, embodiments of the present utility model provide a tension leg floating platform, comprising: the floating bridges 1 are formed into a polygonal structure, each corner of the polygonal structure is provided with a pontoon 2, and every two adjacent pontoons 2 are connected through the floating bridge 1; the number of the extension arms 3 is consistent with that of the pontoons 2, the extension arms 3 are respectively connected with the pontoons 2 in a one-to-one correspondence manner, and tension ropes 4 are respectively arranged at one ends of the extension arms 3, which are far away from the polygonal structure; and the bottom ends of the supporting frames 5 are connected to the top ends of the pontoons 2 and are supported by the pontoons 2. According to the utility model, the distance between the tension cable 4 and the pontoon 2 is increased through the extension arm 3, so that the water flow load, stress and fatigue of the pontoon 2 can be reduced, and the heave, roll and pitch movement periods of the tension leg type floating platform are reduced, thereby improving the stability and the overall performance of the tension leg type floating platform.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The above examples of the present utility model are of course more detailed, but should not be construed as limiting the scope of the utility model, and various other embodiments are possible, based on which those skilled in the art can obtain other embodiments without any inventive task, which fall within the scope of the utility model as defined in the appended claims.

Claims (10)

1. A tension leg floating platform, comprising:

The floating bridges are formed into a polygonal structure, each corner of the polygonal structure is provided with a pontoon, and every two adjacent pontoons are connected through the floating bridge;

The number of the extension arms is consistent with that of the pontoons, each extension arm is connected with each pontoon and corresponds to each pontoon one by one, and one end of each extension arm far away from the polygonal structure is provided with a tension cable;

The bottom of the supporting frame is connected to the top end of each pontoon and is supported by each pontoon.

2. The tension leg type floating platform of claim 1, wherein an end of the extension arm adjacent the polygonal structure is connected to a bottom side of the pontoon and the extension arm is perpendicular to the pontoon.

3. The tension leg floating platform of claim 2, wherein the angle between each adjacent two of the extension arms is uniform.

4. The tension leg floating platform of claim 1, wherein each side of the polygonal structure is uniform and the included angle between each adjacent two of the pontoons is uniform.

5. The tension leg floating platform of claim 1, wherein the pontoon is cylindrical and the pontoon is vertically connected to a bottom side of the pontoon.

6. The tension leg floating platform of claim 1, wherein the support frame comprises a base, a support bar, and a connector; the number of the bases and the number of the supporting rods are consistent with that of the pontoons, the bases are respectively and fixedly arranged on the pontoons in one-to-one correspondence, one end of each supporting rod is respectively connected with the outer side of the connecting piece, and the other end of each supporting rod is respectively connected with the bases in one-to-one correspondence.

7. The tension leg floating platform of claim 1, wherein the extension arms are cylindrical in structure and hollow in interior.

8. The tension leg floating platform of claim 1, wherein one end of the tension cable is connected to an end face of the extension arm that is distal from the end of the polygonal structure.

9. The tension leg floating platform of claim 8, further comprising:

The tension cable connector is rotatably arranged on the end face of one end, far away from the polygonal structure, of the extension arm, and one end of the tension cable is connected with the tension cable connector.

10. A floating wind power system, comprising a wind power generator and the tension leg type floating platform as claimed in any one of claims 1 to 9, wherein the bottom end of the wind power generator is fixedly connected with the top end of the support frame.