Ocean floating type wind power tension leg platform top connector

Abstract

The invention provides an offshore floating type wind power tension leg platform top connector which is applied to an offshore floating type wind power tension leg platform and comprises a mechanical reset device, a tile block, a supporting ring and a middle column, and the mechanical reset device is arranged above the tile block and used for limiting the up-down moving range of the tile block; one side of each tile is an inclined plane and clings to the inclined plane of the supporting ring, and the other side of each tile is provided with a plurality of rows of ring teeth which are meshed with a center pillar and bear load generated by platform mooring; the inner side inclined face of the supporting ring is tightly attached to the tile, and the middle column is inserted into the center of the supporting ring and used for limiting the left-right moving range of the tile. The top of the middle column is connected with an installation cable, the bottom of the middle column is connected with a tension steel cable, and the middle column moves upwards through upward tension provided by the installation cable in the installation process and is meshed with the tile blocks till preset tension required by mooring is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mooring devices, and in particular to a top connector of an offshore floating wind power tension leg platform. Background Art

[0002] Wind power is one of the main directions of renewable energy, among which offshore floating wind power has great potential, and has the advantages of not being restricted by water depth, easy to transport and install, and easy to scale up. It has been widely valued by various countries and has achieved rapid development in recent years. There are four types of offshore floating wind power platforms: column type, semi-submersible type, tension leg type, and barge type. From the comprehensive comparison of adaptability to water depth, comprehensive cost, and mass construction, the tension leg type has certain advantages and development prospects. The tension leg platform connector is a key core component of the platform mooring system. Simple, reliable, easy to install, and low cost are the focus of connector research.

[0003] The top connector of the traditional floating oil and gas production tension leg platform is a mature technology. It usually uses a toothed engagement method to clamp the tendons. The clamping and disengagement of the clamp is generally powered by an underwater hydraulic system. A flexible support is used under the connector, and steel plates and rubber laminated materials are used. The top connector can withstand vertical tension. Due to the compressible characteristics of the flexible support, it can also achieve relative vertical swing. Although the top connector of the deep-sea floating wind power tension leg platform is mature in technology, compared with the floating wind power tension leg platform, its platform is large in scale, heavy, deeper in water, large in load-bearing capacity, and has higher safety performance requirements. The usage scenarios are quite different, and the top connector is complex in structure and installation and expensive. Therefore, directly transplanting the traditional tension leg platform connector to floating wind power is not economical, and it is not suitable for the batch characteristics of offshore wind power. Therefore, it is necessary to develop a simple and low-cost top connector for offshore floating wind power tension leg platforms. Summary of the invention

[0004] According to the technical problems raised above, a top connector of an offshore floating wind power tension leg platform is provided. The present invention mainly utilizes a mechanical reset device, a tile, a support ring, a center column and a slewing bearing device to meet the platform mooring function requirements, has a simple structure and is easy to install, not only meets the platform mooring use requirements, but also has the characteristics of low cost and easy mass production.

[0005] The technical means adopted by the present invention are as follows:

[0006] A top connector of an offshore floating wind power tension leg platform, applied to an offshore floating wind power tension leg platform, comprises: a mechanical reset device, a tile, a support ring, and a center column, wherein:

[0007] The mechanical reset device is arranged above the tile and is used to limit the up and down movement range of the tile;

[0008] One side of the tile is an inclined surface, which is in close contact with the inclined surface of the support ring, and the other side is provided with multiple rows of ring teeth for engaging with the center column to bear the load generated by the platform mooring;

[0009] The inner inclined surface of the support ring is in close contact with the tile, and the middle column is inserted in the center of the support ring to limit the left and right movement range of the tile;

[0010] The top of the center column is connected to the installation cable, and the bottom is connected to the tension cable. During the installation process, the center column moves upward through the upward pulling force provided by the installation cable and engages with the tile until the preset tension required for mooring is reached.

[0011] Furthermore, the top connector further comprises a slewing support device, the slewing support device is arranged below the support ring, a through hole is arranged at the center of the slewing support device, and the middle column is inserted and fixed in the through hole;

[0012] The slewing support device is a slewing thrust bearing type, which can realize horizontal slewing and ±15° swing relative to the vertical direction.

[0013] Further, the mechanical reset device comprises a connecting rod, a spring and a hook head, wherein the spring is arranged above the connecting rod, and the hook head is arranged below the connecting rod;

[0014] The hook head is used for fixing and connecting the tile. The spring is in a compressed state during the installation process, providing downward pressure to the tile and limiting the upward and downward movement range of the tile.

[0015] Furthermore, the support ring is flange-connected to the slewing bearing device.

[0016] Furthermore, a support structure is provided below the slewing bearing device, the support structure is welded and fixed to the offshore floating wind power tension leg platform, the center column is inserted and fixed in the support structure, and the support structure is used to support the structural weight of the top connector and bear the tension of the tension steel cable.

[0017] Furthermore, the support structure is flange-connected to the slewing support device.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The top connector of the offshore floating wind power tension leg platform provided by the present invention includes: a mechanical reset device, a tile, a support ring, and a center column. The mechanical reset device is arranged above the tile, and is used to limit the up and down movement range of the tile; one side of the tile is an inclined surface, which is in close contact with the inclined surface of the support ring, and the other side is provided with multiple rows of ring teeth, which are used to engage with the center column and bear the load generated by the platform mooring; the inner inclined surface of the support ring is in close contact with the tile, and the center column is inserted in the center position of the support ring, which is used to limit the left and right movement range of the tile; the top of the center column is connected to the installation cable, and the bottom is connected to the tension steel cable. During the installation process, the center column moves upward through the upward pulling force provided by the installation cable, and engages with the tile until the preset tension required for mooring is reached. While meeting the functional requirements of the platform mooring, the present invention is convenient to install, low-cost, and suitable for mass promotion.

[0020] The top connector of the offshore floating wind power tension leg platform provided by the present invention, when the platform mooring device is adjusted to a preset tension during installation, the top connector relies on a mechanical reset device to adjust the meshing of the tile and the center column ring teeth, without the need for power operation; the tile and the center column can achieve multi-row ring tooth meshing to bear the load, which is safe and reliable; the swing and rotation functions of the slewing bearing device help to release the torsional stress and deformation during the transportation and installation of the tension steel cable, which is simple and practical.

[0021] Based on the above reasons, the present invention can be widely promoted in the fields of mooring devices and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a schematic diagram of the top connector structure of the offshore floating wind power tension leg platform in the present invention.

[0024] Figure 2 It is a schematic diagram of the installation and adjustment process of the top connector of the offshore floating wind power tension leg platform in the present invention.

[0025] Figure 3 It is a schematic diagram of the installation of the top connector of the offshore floating wind power tension leg platform in the present invention.

[0026] Figure 4 It is a schematic diagram of the swing of the top connector of the offshore floating wind power tension leg platform in the present invention.

[0027] Figure 5 It is a schematic diagram of the outer contour of the top connector of the offshore floating wind power tension leg platform in the present invention.

[0028] In the figure: 1. Mechanical reset device; 2. Tiles; 3. Support ring; 4. Center column; 5. Slewing bearing device; 6. Support structure. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0034] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0035] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0036] like Figure 1 As shown, the present invention provides a top connector of an offshore floating wind power tension leg platform, which is applied to an offshore floating wind power tension leg platform, comprising: a mechanical reset device 1, a tile 2, a support ring 3, and a center column 4, wherein:

[0037] The mechanical reset device 1 is arranged above the tile 2 to limit the up and down movement range of the tile 2; Figure 2 As shown, when the tile 2 is pulled upward by the center column 4, in order to prevent the tile 2 from moving up and down when it is not engaged with the center column 4, the mechanical reset device 1 needs to provide a downward pressure to keep the tile 2 close to the center column 4 and the support ring 3.

[0038] One side of the tile 2 is an inclined surface, which is in close contact with the inclined surface of the support ring 3, and the other side is provided with multiple rows of ring teeth for engaging with the center column 4 to bear the load generated by the platform mooring;

[0039] The inner inclined surface of the support ring 3 is in close contact with the tile 2, and the middle column 4 is inserted in the center of the support ring 3 to limit the left and right movement range of the tile 2;

[0040] The top of the center column 4 is connected to the installation cable, and the bottom is connected to the tension cable. During the installation process, the center column 4 moves upward through the upward pulling force provided by the installation cable and engages with the tile 2. Figure 3 As shown, until the preset tension required for mooring is reached.

[0041] In specific implementation, as a preferred embodiment of the present invention, the top connector further includes a slewing bearing device 5, which is arranged below the support ring 3, and a through hole is arranged at the center of the slewing bearing device 5, and the middle column 4 is inserted and fixed in the through hole;

[0042] like Figure 4 As shown, the slewing support device 5 is a slewing thrust bearing type, which can realize horizontal rotation and ±15° swing relative to the vertical direction.

[0043] In specific implementation, as a preferred embodiment of the present invention, the mechanical reset device 1 includes a connecting rod, a spring and a hook head, wherein the spring is arranged above the connecting rod and the hook head is arranged below the connecting rod;

[0044] The hook head is used to fix the tile 2 . The spring is in a compressed state during the installation process, providing downward pressure to the tile 2 and limiting the upward and downward movement range of the tile 2 .

[0045] In specific implementation, as a preferred embodiment of the present invention, the support ring 3 is flange-connected to the slewing bearing device 5 .

[0046] During specific implementation, as a preferred embodiment of the present invention, a support structure 6 is further provided below the slewing bearing device 5, the support structure 6 is welded and fixed to the offshore floating wind power tension leg platform, the center column 4 is inserted and fixed in the support structure 6, and the support structure 6 is used to support the structural weight of the top connector and bear the tension of the tension steel cable.

[0047] In specific implementation, as a preferred embodiment of the present invention, the support structure 6 is flange-connected to the slewing support device 5 .

[0048] When implementing, Figure 5 As shown, three mechanical reset devices 1 are provided, evenly distributed on the circumference.

[0049] Example

[0050] like Figure 1As shown, the present invention provides a top connector for an offshore floating wind power tension leg platform, wherein the top connector bracket structure is welded to the buoy of the tension leg platform, and the top connector center column 4 is respectively connected to the installation cable and the tension steel cable at the top and bottom. During the installation process, the installation steel cable pulls the center column 4 upward, pushing the tile 2 to slide upward along the inclined surface of the support ring, and at the same time, the mechanical reset device 1 compresses the spring under the action of the connecting rod. During the process, the bottom hook under the connecting rod of the mechanical reset device 1 is always in contact with the tile 2. As the center column 4 is further lifted to a pitch height, the ring teeth on the tile 2 begin to no longer mesh with the ring teeth on the center column 4, and the lifting continues, so that the first row of ring teeth of the tile 2 meshes with the ring teeth of the center column 4, as shown in FIG. Figure 2 Continue to pull upwards and repeat the process of the previous step. The second row of ring teeth of tile 2 meshes with the ring teeth of the middle column 4. Finally, at most five rows of ring teeth of tile 2 mesh with the ring teeth of the middle column 4 to achieve the preset tension required for mooring, as shown in FIG. Figure 3 shown.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A top connector of an offshore floating wind power tension leg platform, applied to an offshore floating wind power tension leg platform, characterized in that: include: A mechanical reset device (1), a tile (2), a support ring (3), and a center column (4), wherein: The mechanical reset device (1) is arranged above the tile (2) and is used to limit the upward and downward movement range of the tile (2); One side of the tile (2) is an inclined surface, which is in close contact with the inclined surface of the support ring (3), and the other side is provided with multiple rows of ring teeth, which are used to mesh with the center column (4) to bear the load generated by the platform mooring; The inner inclined surface of the support ring (3) is in close contact with the tile (2), and the middle column (4) is inserted in the center of the support ring (3) to limit the left and right movement range of the tile (2); The top of the center column (4) is connected to the installation cable, and the bottom is connected to the tension cable. During the installation process, the center column (4) moves upward through the upward pulling force provided by the installation cable and engages with the tile (2) until the preset tension required for mooring is reached.

2. The top connector of the offshore floating wind power tension leg platform according to claim 1, characterized in that: The top connector further comprises a slewing support device (5), wherein the slewing support device (5) is arranged below the support ring (3), a through hole is arranged at the center of the slewing support device (5), and a center column (4) is inserted and fixed in the through hole; The slewing support device (5) is a slewing thrust bearing type, which can realize horizontal slewing and ±15° swing relative to the vertical direction.

3. The top connector of the offshore floating wind power tension leg platform according to claim 1, characterized in that: The mechanical reset device (1) comprises a connecting rod, a spring and a hook head, wherein the spring is arranged above the connecting rod and the hook head is arranged below the connecting rod; The hook head is used to fix the connection tile (2); the spring is in a compressed state during the installation process, providing downward pressure to the tile (2) and limiting the upward and downward movement range of the tile (2).

4. The top connector of the offshore floating wind power tension leg platform according to claim 2, characterized in that: The support ring (3) is flange-connected to the slewing bearing device (5).

5. The top connector of the offshore floating wind power tension leg platform according to claim 2, characterized in that: A support structure (6) is also provided below the slewing bearing device (5), the support structure (6) is welded and fixed to the offshore floating wind power tension leg platform, the center column (4) is inserted and fixed in the support structure (6), and the support structure (6) is used to support the structural weight of the top connector and bear the tension of the tension steel cable.

6. The top connector of the offshore floating wind power tension leg platform according to claim 5, characterized in that: The support structure (6) is flange-connected to the slewing support device (5).

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