Flexible supporting device for FPSO
The design of the flexible support device solved the problem of excessive rigidity at the connection between the FPSO upper module and the hull deck, achieving a flexible connection, reducing stress concentration, and extending the service life of the equipment.
Patent Information
- Application Number
- CN202423278570.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The excessive rigidity at the connection between the upper module and the hull deck of the existing FPSO leads to stress concentration and structural damage, affecting its service life.
A flexible support device is adopted, including an upper support assembly, a lower support pier, an elastic support, and a viscous damper. Flexible connection is achieved through damping telescopic rods and limiting components, reducing rigid constraints and stress concentration.
Flexible connections reduce rigid constraints between the superstructure and the hull deck, preventing stress concentration and extending the service life of the FPSO.
Smart Images
Figure CN223533637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of modular support technology, and specifically to a flexible support device for FPSO. Background Technology
[0002] Floating Production Storage and Offloading (FPSO) is a new type of floating production unit that integrates oil and gas production, processing, storage, and power generation. It is widely used in offshore oil and gas field development and mainly consists of two parts: the top module and the hull. The top module realizes the functions of crude oil extraction, processing, storage, and offloading through different functional modules and a series of complex processes.
[0003] In the design and construction of FPSOs, the connection structure between the supermodule and the hull deck is particularly important because it bears the static and dynamic loads generated by the supermodule. However, when using traditional connection structures to connect the supermodule and the hull deck, the rigidity of the vertical and lateral connections is relatively high. On the one hand, this can lead to stress concentration at the connection between the supermodule and the hull deck. On the other hand, when the supermodule deforms and causes angular or positional offsets relative to the hull deck, i.e., during rotation and sliding, the supermodule and the hull deck are easily damaged, thus affecting the service life of the FPSO. Utility Model Content
[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this utility model is to provide a flexible support device for FPSO, which solves the problem of excessive rigidity at the vertical and lateral connections between the upper module and the hull deck.
[0005] To achieve the above objectives, this utility model provides a flexible support device for FPSO, including an upper support assembly, a lower support, an elastic support, and a viscous damper. The elastic support is disposed on the lower support, and the upper support assembly is disposed on the elastic support. The lower support is connected to the upper support assembly through the viscous damper. The viscous damper includes a connector and a damping telescopic rod. Connectors are provided on both the upper support assembly and the lower support. The two ends of the damping telescopic rod are respectively hinged to the connectors on the upper support assembly and the lower support.
[0006] Furthermore, the elastic support is made of rubber.
[0007] Furthermore, the upper support assembly includes a circular tube column and an H-shaped steel beam, the circular tube column and the H-shaped steel beam are welded and fixed together, and the bottom end of the circular tube column is supported on an elastic support.
[0008] Furthermore, the connecting component includes a pin seat, a pin shaft, and a pin head. The pin head can be hinged to the pin seat through the pin shaft. Pin seats are provided on both the H-shaped steel beam and the lower support. Pin heads are provided at both ends of the damping telescopic rod, and the pin heads at both ends of the damping telescopic rod are respectively hinged to the pin seats on the H-shaped steel beam and the lower support through the pin shaft.
[0009] Furthermore, two viscous dampers are provided, and the two viscous dampers are located on both sides of the circular tube column in the left and right directions, respectively.
[0010] Furthermore, a limiting component is provided between the upper support assembly and the lower support pier. The limiting component includes two limiting blocks, which are located on both sides of the circular tube column in the front-rear direction. The bottom end of the limiting block is supported on the lower support pier, and the H-shaped steel beam is supported on the top end of the limiting block.
[0011] Furthermore, a circular base plate is provided at the end of the circular tube column that contacts the elastic support. The circular base plate is supported on the elastic support, and the diameter of the circular base plate is larger than the diameter of the circular tube column.
[0012] Furthermore, the circular tube column, H-beam, limiting component, lower support, and viscous damper are all provided with anti-corrosion coatings.
[0013] Furthermore, all of the circular base plates are provided with an anti-corrosion coating.
[0014] As described above, the flexible support device for FPSOs according to this utility model has the following beneficial effects:
[0015] By setting up upper support components, lower supports, elastic bearings, and viscous dampers, a flexible connection between the upper module and the hull can be achieved, which can reduce the rigid constraints between the upper module and the hull deck and reduce stress concentration at the connection, thereby improving the service life of the FPSO. Attached Figure Description
[0016] Figure 1 This is a top view of the flexible support device in this utility model.
[0017] Figure 2 for Figure 1 Cross-sectional view along the middle AA.
[0018] Figure 3 for Figure 1 Cross-sectional view of the middle BB.
[0019] Figure 4 for Figure 3 Enlarged view of point C.
[0020] Explanation of icon numbers
[0021] 1. Upper support assembly; 101. Circular tube column; 102. H-beam; 2. Lower support pier; 3. Elastic support; 4. Viscous damper; 401. Damping telescopic rod; 402. Pin seat; 403. Pin shaft; 404. Pin head; 5. Limiting block; 6. Circular base plate. Detailed Implementation
[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.
[0023] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] See Figures 1 to 4This utility model provides a flexible support device for FPSO, including an upper support assembly 1 connected to the upper module, a lower support pier 2 connected to the hull deck, an elastic support 3, and a viscous damper 4. The elastic support 3 is disposed on the lower support pier 2, and the upper support assembly 1 is disposed on the elastic support 3. The lower support pier 2 is connected to the upper support assembly 1 through the viscous damper 4. The viscous damper 4 includes a connector and a damping telescopic rod 401. Both the upper support assembly 1 and the lower support pier 2 are provided with connectors. The two ends of the damping telescopic rod 401 are respectively hinged to the connectors on the upper support assembly 1 and the lower support pier 2. Preferably, the application of the flexible support device is not limited to FPSO, but also includes floating liquefied natural gas (FLNG) production storage and offloading units, as well as semi-submersible, single-column, and tension leg offshore floating platforms.
[0027] The basic working principle of the flexible support device for FPSO involved in this utility model is as follows: by setting up an upper support assembly 1, a lower support 2, an elastic support 3, and a viscous damper 4, a flexible connection between the upper module and the hull can be achieved. Among them, the upper support assembly 1, the lower support 2, the elastic support 3, and the viscous damper 4 can release the bending moment and small-range translational motion of the upper module relative to the hull deck. Specifically, when the upper module deforms and rotates and slides relative to the hull deck, the elastic support 3 can convert the rotation and sliding of the upper module relative to the hull deck into a certain degree of elastic deformation of the elastic support 3 itself, which to a certain extent avoids local or overall instability and failure of the upper module and the hull deck. At the same time, the upper support assembly 1 can rotate in the corresponding direction relative to the lower support 2 through the connecting parts, and the upper support assembly 1 can also slide in the corresponding direction relative to the lower support 2 through the damping telescopic rod 401, thereby reducing the rigid constraint between the upper module and the hull deck and reducing stress concentration at the connection, thereby improving the service life of the FPSO.
[0028] See Figures 1 to 4 The present invention will be further described below with reference to a specific embodiment:
[0029] In this embodiment, see Figure 1 , Figure 2 and Figure 3 As a preferred design, the elastic support 3 is made of rubber. In other embodiments, the elastic support 3 may also be made of other similar elastic materials with the same effect.
[0030] In this embodiment, see Figure 1 , Figure 2 and Figure 3As a preferred design, the upper support assembly 1 includes a circular tube column 101 and an H-shaped steel beam 102. The circular tube column 101 and the H-shaped steel beam 102 are welded and fixed together, and the bottom end of the circular tube column 101 is supported on the elastic support 3. Both the circular tube column 101 and the H-shaped steel beam 102 are connected to the upper module.
[0031] In this embodiment, see Figure 4 As a preferred design, the connector includes a pin seat 402, a pin shaft 403, and a pin head 404. The pin head 404 can be hinged to the pin seat 402 through the pin shaft 403. Pin seats 402 are provided on both the H-beam 102 and the lower support 2. Pin heads 404 are provided at both ends of the damping telescopic rod 401. The pin heads 404 at both ends of the damping telescopic rod 401 are respectively hinged to the pin seats 402 on the H-beam 102 and the lower support 2 through the pin shaft 403. This makes it easy to hinge both ends of the damping telescopic rod 401 to the upper support assembly 1 and the lower support 2 respectively. The design is reliable, simple in structure, and easy to disassemble.
[0032] In this embodiment, see Figure 3 As a preferred design, two viscous dampers 4 are provided, and the two viscous dampers 4 are respectively located on both sides of the circular tube column 101 in the left and right directions. They can release the bending moment and small-range translation of the upper module in the left and right directions. That is, when the upper module deforms and generates rotation and sliding in the left and right directions relative to the hull deck, the upper support assembly 1 can generate corresponding rotation and sliding relative to the lower support pier 2 through the viscous dampers 4. In other embodiments, according to project requirements and actual needs, four viscous dampers 4 can be provided, and the four viscous dampers 4 are respectively located on the four sides of the circular tube column 101 in the front, back, left and right directions. Based on a similar principle, they can release the bending moment and small-range translation of the upper module in the front, back, left and right directions.
[0033] In this embodiment, see Figure 1 and Figure 2As a preferred design, a limiting component is also provided between the upper support assembly 1 and the lower support pier 2. The limiting component includes two limiting blocks 5, which are located on both sides of the circular tube column 101 in the front-rear direction. The bottom end of the limiting block 5 is supported on the lower support pier 2, and the H-shaped steel beam 102 is supported on the top end of the limiting block 5. By setting the limiting blocks 5, on the one hand, the load transfer between the upper module and the lower support pier 2 can be realized, and on the other hand, the deformation of the upper module in the front-rear direction can be limited to a certain extent, providing flexible support for the upper module in the front-rear direction and providing certain protection for the upper module and the hull. In other embodiments, the limiting component can be set to four limiting blocks 5 according to project requirements and actual needs, and the four limiting blocks 5 are located on the four sides of the circular tube column 101 in the front-rear, left-right, and right directions. Based on a similar principle, the deformation of the upper module in the front-rear, left-right, and right directions can be limited to a certain extent, providing flexible support for the upper module in the front-rear, left-right, and right directions and further providing certain protection for the upper module and the hull.
[0034] In this embodiment, see Figure 2 and Figure 3 As a preferred design, a circular base plate 6 is provided at the end of the circular tube column 101 that contacts the elastic support 3. The circular base plate 6 is supported on the elastic support 3, and the diameter of the circular base plate 6 is larger than the diameter of the circular tube column 101. The circular base plate 6 between the circular tube column 101 and the elastic support 3 can ensure that the elastic support 3 only transmits pressure and not tension and shear force.
[0035] In this embodiment, see Figure 1 , Figure 2 and Figure 3 As a preferred design, the circular tube column 101, H-shaped steel beam 102, limiting component, lower support 2 and viscous damper 4 are all provided with anti-corrosion coating. The anti-corrosion coating can form a physical barrier on the circular tube column 101, H-shaped steel beam 102, limiting component, lower support 2 and viscous damper 4, reducing or preventing corrosion and extending the service life of the overall structure.
[0036] In this embodiment, see Figure 2 and Figure 3 As a preferred design, all circular base plates 6 are provided with an anti-corrosion coating. The anti-corrosion coating can form a physical barrier on the circular base plate 6, reducing or preventing corrosion and extending the service life of the circular base plate 6.
[0037] As can be seen from the above, the flexible support device for FPSO of this utility model has the following beneficial effects:
[0038] By setting up the upper support assembly 1, lower support 2, elastic support 3 and viscous damper 4, a flexible connection between the upper module and the hull can be achieved, which can reduce the rigid constraint between the upper module and the hull deck and reduce stress concentration at the connection, thereby improving the service life of the FPSO.
[0039] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.
[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A flexible support device for FPSO, characterized in that: The device includes an upper support assembly (1), a lower support (2), an elastic support (3), and a viscous damper (4). The elastic support (3) is mounted on the lower support (2), and the upper support assembly (1) is mounted on the elastic support (3). The lower support (2) is connected to the upper support assembly (1) via the viscous damper (4). The viscous damper (4) includes a connector and a damping telescopic rod (401). Both the upper support assembly (1) and the lower support (2) are provided with connectors. The two ends of the damping telescopic rod (401) are respectively hinged to the connectors on the upper support assembly (1) and the lower support (2).
2. The flexible support device for FPSO according to claim 1, characterized in that: The elastic support (3) is made of rubber.
3. The flexible support device for FPSO according to claim 1, characterized in that: The upper support assembly (1) includes a circular tube column (101) and an H-shaped steel beam (102). The circular tube column (101) and the H-shaped steel beam (102) are welded and fixed together, and the bottom end of the circular tube column (101) is supported on an elastic support (3).
4. The flexible support device for FPSO according to claim 3, characterized in that: The connector includes a pin seat (402), a pin shaft (403), and a pin head (404). The pin head (404) can be hinged to the pin seat (402) through the pin shaft (403). Pin seats (402) are provided on both the H-beam (102) and the lower support (2). Pin heads (404) are provided at both ends of the damping telescopic rod (401), and the pin heads (404) at both ends of the damping telescopic rod (401) are respectively hinged to the pin seats (402) on the H-beam (102) and the lower support (2) through the pin shaft (403).
5. The flexible support device for FPSO according to claim 3, characterized in that: Two viscous dampers (4) are provided, and the two viscous dampers (4) are located on both sides of the circular tube column (101) in the left and right directions respectively.
6. The flexible support device for FPSO according to claim 3, characterized in that: A limiting component is also provided between the upper support assembly (1) and the lower support pier (2). The limiting component includes two limiting blocks (5), and the two limiting blocks (5) are located on both sides of the circular tube column (101) in the front-rear direction. The bottom end of the limiting block (5) is supported on the lower support pier (2), and the H-shaped steel beam (102) is supported on the top end of the limiting block (5).
7. The flexible support device for FPSO according to claim 3, characterized in that: A circular base plate (6) is provided at the end of the circular tube column (101) that contacts the elastic support (3). The circular base plate (6) is supported on the elastic support (3), and the diameter of the circular base plate (6) is larger than the diameter of the circular tube column (101).
8. The flexible support device for FPSO according to claim 6, characterized in that: The circular tube column (101), H-shaped steel beam (102), limiting component, lower support (2) and viscous damper (4) are all provided with anti-corrosion coating.
9. The flexible support device for FPSO according to claim 7, characterized in that: The circular base plates (6) are all provided with anti-corrosion coatings.