Modular offshore converter station module structure
Patent Information
- Application Number
- CN202522506871.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-26
AI Technical Summary
国内虽然有多座正在设计中的换流站，但行业内对这种大尺寸，大跨度的组块结构设计经验不多，加之换流站组块需采用浮托法进行安装，设计中需根据浮托法安装的要求进行特殊的设计，造成整个换流站组块结构不合理重量偏大
[0024]由以上技术方案可以看出，和现有技术相比，本实用新型实施例所公开的模块化海上换流站组块结构具有以下技术优势：
Smart Images
Figure CN224902845U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of offshore converter stations, and specifically relates to a modular offshore converter station module structure. Background Technology
[0002] With the continuous advancement of offshore wind power technology in my country, the construction of offshore wind farms is gradually expanding to the deep sea, with increasingly greater distances from the shore. At the same time, offshore wind power construction is developing towards large-scale and large-scale operations, leading to the consideration of DC transmission technology with larger capacity and longer transmission distances. This necessitates the construction of large-scale converter station platforms at sea.
[0003] Offshore converter stations, constrained by platform size, require a compact, layered layout of electrical equipment. This necessitates arranging all equipment within a very small space, with the industry commonly employing 6 to 7 decks. Due to equipment size and insulation requirements, the modules must be designed with large spans. While several converter stations are under design in China, the industry lacks experience in designing such large-size, large-span module structures. Furthermore, the need for floating installation of the converter station modules necessitates special design considerations based on these requirements, resulting in an unbalanced and excessively heavy overall module structure.
[0004] Therefore, how to develop an offshore converter station structure that can meet the installation requirements of the floating method, has a compact and simple structure, a clear and efficient force transmission path, and thus effectively reduce the overall weight is a key technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide a modular offshore converter station block structure that can take into account the requirements of the float-over method installation, has a compact and simple structure, and a clear and efficient force transmission path, thereby effectively reducing the overall weight of the offshore converter station structure.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A modular offshore converter station module structure includes multiple decks and a column system supporting the multiple decks;
[0008] The column system includes multiple first main frames arranged at intervals along a first direction, and multiple second main frames arranged at intervals along a second direction, wherein the first main frames and the second main frames intersect.
[0009] At least one first main frame and / or at least one second main frame includes multiple columns and diagonal braces, and the diagonal braces are arranged between every two adjacent columns.
[0010] Optionally, at least one of the first main frames is provided with the diagonal bracing between two adjacent decks.
[0011] Optionally, the deck includes a first deck, a second deck, a third deck, and a fourth deck;
[0012] The diagonal bracing is located between the first deck and the second deck, and between the third deck and the fourth deck.
[0013] Optionally, the first main frame has at least four sections, which are respectively set along at least the first axis, the second axis, the third axis and the fourth axis;
[0014] The first main frame, which is arranged along the first axis and the fourth axis, is respectively arranged on both sides of the modular offshore converter station block structure;
[0015] The first main frame arranged along the second axis and the third axis is located between the first main frame arranged along the first axis and the fourth axis. The first main frame arranged along the second axis is provided with a first main leg, and the first main frame arranged along the third axis is provided with a second main leg.
[0016] Optionally, the first main frame, which is mounted on the second axis, is located at the bottom of the valve hall, and the first main frame is provided with the diagonal bracing at the locations between the first deck and the second deck, and between the third deck and the fourth deck.
[0017] Optionally, the first main frame, which is arranged along the third axis, is positioned to correspond to the bulkhead of the separating valve hall and the bridge arm reactor room, and in the first main frame, the diagonal brace is provided between every two adjacent columns.
[0018] Optionally, the distance between the first main leg and the second main leg is L1, and the total length of the modular offshore converter station block structure is L, where 1 / 3 ≤ L1 / L ≤ 2 / 3.
[0019] Optionally, the second main frame consists of three axes, arranged along the fifth, sixth, and seventh axes respectively. The fifth, sixth, and seventh axes all intersect with the first axis to form a first intersection point, a second intersection point, and a third intersection point. Furthermore, the fifth, sixth, and seventh axes all intersect with the third axis to form a fourth intersection point, a fifth intersection point, and a sixth intersection point.
[0020] The first main leg consists of three parts, and is respectively located at the first intersection point, the second intersection point, and the third intersection point;
[0021] The second main leg consists of three legs, which are respectively located at the fourth intersection point, the fifth intersection point, and the sixth intersection point.
[0022] Optionally, along the first direction, in the region between the second axis and the third axis, there are also multiple first main frames arranged along the first auxiliary axis, the second auxiliary axis, the third auxiliary axis and the fourth auxiliary axis, and the first main frames arranged along the first auxiliary axis, the second auxiliary axis, the third auxiliary axis and the fourth auxiliary axis all intersect with the fifth axis, the sixth axis and the seventh axis arranged along the second direction.
[0023] Optionally, the first main leg and the second main leg extend downward beyond the bottom deck of the modular offshore converter station block structure by a length of L2, where 3m ≤ L2 ≤ 10m.
[0024] As can be seen from the above technical solutions, compared with the prior art, the modular offshore converter station module structure disclosed in this utility model embodiment has the following technical advantages:
[0025] 1) The first main frame and / or the second main frame form a truss support system through columns and diagonal braces. The diagonal braces divide the rectangular frame formed by the columns into triangular structural units. Since triangles are geometrically stable, they can effectively resist lateral forces and torsional forces such as wind loads and wave forces. Moreover, since the columns mainly bear vertical pressure and the diagonal braces mainly bear horizontal loads, the combination of the two can effectively improve the stiffness of the modular offshore converter station block structure without excessively increasing it to meet stiffness requirements, thus meeting its lightweight requirements.
[0026] 2) The diagonal bracing makes the force transmission path shorter and more direct, resulting in a more uniform stress distribution. Moreover, the diagonal bracing can greatly enhance the integrity of the modular offshore converter station module structure in the floating state, enabling it to better meet the strength and stiffness requirements under the special working conditions of floating installation. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0028] Figure 1 This is a layout diagram of the first main frame and the second main frame of the modular offshore converter station block structure disclosed in the embodiments of this utility model.
[0029] Figure 2 This is an elevation view of the second main frame disclosed in an embodiment of the present utility model;
[0030] Figure 3 This is an elevation view of the first main frame disclosed in the embodiment of this utility model;
[0031] Figure 4 This is an elevation view of the first main frame disclosed in the embodiment of this utility model;
[0032] Figure 5 This is an elevation view of the first main frame disclosed in the embodiment of this utility model;
[0033] Figure 6 This is an elevation view of the first main frame disclosed in the embodiment of this utility model;
[0034] Figure 7 This is an elevation view of the first main frame disclosed in the embodiment of this utility model;
[0035] Explanation of reference numerals in the attached figures:
[0036] 100. First main frame; 101. First axis; 102. Second axis; 103. Third axis; 104. Fourth axis; 105. First auxiliary axis; 106. Second auxiliary axis; 107. Third auxiliary axis; 108. Fourth auxiliary axis;
[0037] 200. Second main frame; 201. Fifth axis; 202. Sixth axis; 203. Seventh axis;
[0038] 300. Haibang Supporting Institutions. Detailed Implementation
[0039] In view of this, the core of this utility model is to provide a modular offshore converter station structure that can take into account the requirements of the float-over method installation, has a compact and simple structure, and a clear and efficient force transmission path, thereby effectively reducing the overall weight of the offshore converter station structure.
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Please refer to... Figures 1 to 7 .
[0041] Please refer to Figure 1The modular offshore converter station block structure disclosed in this utility model embodiment includes a multi-layer deck and a column system supporting the multi-layer deck. The column system includes multiple first main frames 100 arranged at intervals along a first direction and multiple second main frames 200 arranged at intervals along a second direction. The first main frames 100 and the second main frames 200 intersect. At least one first main frame 100 and / or at least one second main frame 2002 includes multiple columns and diagonal braces, and the diagonal braces are arranged between every two adjacent columns.
[0042] Compared with the prior art, the modular offshore converter station module structure disclosed in this utility model embodiment has the following technical advantages:
[0043] 1) The first main frame 100 and / or the second main frame 200 form a truss support system through columns and diagonal braces. The diagonal braces divide the rectangular frame formed by the columns into triangular structural units. Since triangles are geometrically stable, they can effectively resist lateral forces and torsional forces such as wind loads and wave forces. Moreover, since the columns mainly bear vertical pressure and the diagonal braces mainly bear horizontal loads, the combination of the two can effectively improve the stiffness of the modular offshore converter station block structure without excessively increasing it to meet stiffness requirements, thus meeting its lightweight requirements.
[0044] 2) The diagonal bracing makes the force transmission path shorter and more direct, resulting in a more uniform stress distribution. Moreover, the diagonal bracing can greatly enhance the integrity of the modular offshore converter station module structure in the floating state, enabling it to better meet the strength and stiffness requirements under the special working conditions of floating installation.
[0045] As a further embodiment, in the modular offshore converter station block structure disclosed in this utility model embodiment, at least one first main frame 100 is provided with diagonal bracing between two adjacent decks. That is to say, depending on the actual situation, diagonal bracing may or may not be provided on the first main frame 100 between different adjacent decks. Therefore, by adopting a differentiated diagonal bracing arrangement density between different deck layers, this utility model embodiment can achieve precise control of the stiffness of the modular offshore converter station block structure.
[0046] As a specific embodiment, the deck disclosed in this utility model embodiment includes a first deck, a second deck, a third deck, and a fourth deck. The diagonal bracing is provided between the first and second decks, and between the third and fourth decks. The diagonal bracing between the first and second decks not only supports the equipment on the second deck, but more importantly, it serves as the convergence point for all loads below, clearly transmitting force to the foundation and providing a stable base for the upper structure. The diagonal bracing between the third and fourth decks provides direct and robust support for heavy equipment arranged on the third deck.
[0047] As a further embodiment, the first main frame 100 disclosed in this utility model embodiment has four sections, which are respectively arranged along the first axis 101, the second axis 102, the third axis 103 and the fourth axis 104;
[0048] The first main frames 100, arranged along the first axis 101 and the fourth axis 104, are respectively located on both sides of the modular offshore converter station module structure. The first main frames 100, arranged along the second axis 102 and the third axis 103, are located between the first main frames 100 arranged along the first axis 101 and the fourth axis 104. The first main frame 100 arranged along the second axis 102 is provided with a first main leg, and the first main frame 100 arranged along the third axis 103 is provided with a second main leg. In this arrangement, the first axis 101 and the fourth axis 104 are the boundary frames on both sides of the modular offshore converter station module structure, undertaking the functions of enclosure and partial load-bearing; the second axis 102 and the third axis 103 are the internal core load-bearing frames. This structural design constructs a clear force transmission system. The deck load is transferred to the first main frame 100 through the column system, and the first main frame 100 arranged along the second axis 102 and the third axis 103, as the core load-bearing frame, becomes the main load-bearing truss.
[0049] It should be noted that in the modular offshore converter station block structure disclosed in this utility model embodiment, the first main frame 100 set on the second shaft 102 is located at the bottom of the valve hall. The first main frame 100 is provided with diagonal bracing at the positions between the first deck and the second deck, and between the third deck and the fourth deck.
[0050] Since the valve hall is the core area of the modular offshore converter station module structure, and contains key equipment such as converter valves that are extremely heavy and valuable, diagonal bracing is installed on the first main frame 100 between the first and second decks and between the third and fourth decks, which can effectively improve the strength of the modular offshore converter station module structure.
[0051] It should be noted that no diagonal bracing is installed between the second and third decks.
[0052] As a further embodiment, the modular offshore converter station block structure disclosed in this utility model has a first main frame 100 arranged along the third axis 103, the position of which corresponds to the bulkhead separating the valve hall and the bridge arm reactor room. Furthermore, diagonal braces are provided between every two adjacent columns in the first main frame 100. This design integrates the structural load-bearing frame of the first main frame 100 arranged along the third axis 103 with the functional area separating bulkhead to make it a robust three-dimensional support structure.
[0053] As a further embodiment, the distance between the first main leg and the second main leg disclosed in this utility model embodiment is L1, and the total length of the modular offshore converter station block structure is L, 1 / 3≤L1 / L≤2 / 3, wherein L1 meets the requirements for the spacing between the floating installation vessel and the block.
[0054] With this configuration, setting L1 / L between 1 / 3 and 2 / 3, a relative balance between bending moment and shear force can be achieved. This structural configuration allows for optimal distribution of internal forces under installation conditions, thus enabling the safe bearing of installation loads through relatively economical and reasonable structural dimensions, which is a prerequisite for achieving lightweighting.
[0055] As a further embodiment, the modular offshore converter station block structure disclosed in this utility model embodiment has three main frames 200, which are respectively arranged along the fifth axis 201, the sixth axis 202, and the seventh axis 203. The fifth axis 201, the sixth axis 202, and the seventh axis 203 all intersect with the first axis 101 to form a first intersection point, a second intersection point, and a third intersection point. The fifth axis 201, the sixth axis 202, and the seventh axis 203 all intersect with the third axis 103 to form a fourth intersection point, a fifth intersection point, and a sixth intersection point.
[0056] The first main leg consists of three sections, positioned at the first, second, and third intersections respectively. The second main leg consists of three sections, positioned at the fourth, fifth, and sixth intersections respectively. This configuration ensures that load transfer is no longer unidirectional, but rather creates the shortest and most direct force flow path through a bidirectional grid system that integrates horizontal and vertical directions.
[0057] As a further embodiment, the modular offshore converter station block structure disclosed in this utility model embodiment further includes multiple first main frames 100 arranged along the first auxiliary axis 105, the second auxiliary axis 106, the third auxiliary axis 107 and the fourth auxiliary axis 108 in the region between the second axis 102 and the third axis 103 along the first auxiliary axis 105, the second auxiliary axis 106, the third auxiliary axis 107 and the fourth auxiliary axis 108, and all the first main frames 100 arranged along the first auxiliary axis 105, the second auxiliary axis 106, the third auxiliary axis 107 and the fourth auxiliary axis 108 intersect with the fifth axis 201, the sixth axis 202 and the seventh axis 203 arranged along the second direction.
[0058] The first main frame 100, which is set along the first auxiliary axis 105, the second auxiliary axis 106, the third auxiliary axis 107 and the fourth auxiliary axis 108, is used to connect the modular offshore converter station block structure with the marine support mechanism 300 during transportation, so as to transfer the inertial load generated during transportation to the first main frame 100 of the modular offshore converter station block structure.
[0059] As a further embodiment, in the modular offshore converter station module structure disclosed in this utility model embodiment, the first and second main legs extend downwards beyond the bottom deck of the modular offshore converter station module structure by a length L2, where 3m ≤ L2 ≤ 10m. This configuration greatly improves the fault tolerance and safety during the float-over installation process, providing crucial assurance for the core installation steps.
[0060] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A modular offshore converter station module structure, characterized in that, Includes multiple decks and a column system supporting the multiple decks; The column system includes multiple first main frames arranged at intervals along a first direction, and multiple second main frames arranged at intervals along a second direction, wherein the first main frames and the second main frames intersect. At least one first main frame and / or at least one second main frame includes multiple columns and diagonal braces, and the diagonal braces are arranged between every two adjacent columns.
2. The modular offshore converter station module structure according to claim 1, characterized in that, At least one of the first main frames is provided with the diagonal bracing between two adjacent decks.
3. The modular offshore converter station module structure according to claim 2, characterized in that, The deck includes a first deck, a second deck, a third deck, and a fourth deck; The diagonal bracing is located between the first deck and the second deck, and between the third deck and the fourth deck.
4. The modular offshore converter station module structure according to claim 3, characterized in that, The first main frame has at least four sections, which are respectively arranged along at least the first axis, the second axis, the third axis and the fourth axis; The first main frame, which is arranged along the first axis and the fourth axis, is respectively arranged on both sides of the modular offshore converter station block structure; The first main frame arranged along the second axis and the third axis is located between the first main frame arranged along the first axis and the fourth axis. The first main frame arranged along the second axis is provided with a first main leg, and the first main frame arranged along the third axis is provided with a second main leg.
5. The modular offshore converter station module structure according to claim 4, characterized in that, The first main frame, which is mounted on the second axis, is located at the bottom of the valve hall. The first main frame is provided with the diagonal bracing at the location between the first deck and the second deck, and at the location between the third deck and the fourth deck.
6. The modular offshore converter station module structure according to claim 4, characterized in that, The first main frame, which is arranged along the third axis, is positioned corresponding to the bulkhead of the separating valve hall and the bridge arm reactor room, and in the first main frame, the diagonal brace is provided between every two adjacent columns.
7. The modular offshore converter station module structure according to claim 4, characterized in that, The distance between the first main leg and the second main leg is L1, and the total length of the modular offshore converter station block structure is L, where 1 / 3 ≤ L1 / L ≤ 2 / 3.
8. The modular offshore converter station module structure according to claim 4, characterized in that, The second main frame consists of three axes, which are respectively set along the fifth axis, the sixth axis, and the seventh axis. The fifth axis, the sixth axis, and the seventh axis all intersect with the first axis to form a first intersection point, a second intersection point, and a third intersection point. Furthermore, the fifth axis, the sixth axis, and the seventh axis all intersect with the third axis to form a fourth intersection point, a fifth intersection point, and a sixth intersection point. The first main leg consists of three parts, and is respectively located at the first intersection point, the second intersection point, and the third intersection point; The second main leg consists of three legs, which are respectively located at the fourth intersection point, the fifth intersection point, and the sixth intersection point.
9. The modular offshore converter station module structure according to claim 8, characterized in that, Along the first direction, in the region between the second axis and the third axis, there are also multiple first main frames arranged along the first auxiliary axis, the second auxiliary axis, the third auxiliary axis and the fourth auxiliary axis, and the first main frames arranged along the first auxiliary axis, the second auxiliary axis, the third auxiliary axis and the fourth auxiliary axis all intersect with the fifth axis, the sixth axis and the seventh axis arranged along the second direction.
10. The modular offshore converter station module structure according to claim 9, characterized in that, The first main leg and the second main leg extend downward beyond the bottom deck of the modular offshore converter station block structure by a length of L2, where 3m ≤ L2 ≤ 10m.