Floating power generation platform

Abstract

The utility model relates to the technical field of ship power generation mounting bases, discloses a floating power generation platform, and aims to solve the problems of high machining difficulty, poor corrosion resistance and high cost caused by a base of a steel box structure. The floating power generation platform comprises a platform body, power generation equipment and a gravity base, the power generation equipment is connected with the platform body through the gravity base, and the gravity base is of a reinforced concrete structure. The gravity base is configured to be of a reinforced concrete structure, so that the machining and manufacturing process of the gravity base is simplified, the corrosion resistance effect of the gravity base is improved, and the production cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship power generation installation base, in particular to a floating power generation platform. BACKGROUND

[0002] In the field of ocean development such as ships or offshore platforms, gas turbines or steam turbines are needed to ensure power supply. In floating structures such as ships or offshore platforms, in order to avoid harmful vibration of the ship or offshore platform with installed gas turbines or steam turbines, a base with large mass is needed to avoid vibration impact of the gas turbine or steam turbine on the ship or offshore platform during operation, and to reduce or avoid coupled vibration of the gas turbine (or steam turbine) during operation.

[0003] In related schemes, the base usually adopts a steel box structure to control shaft deformation and is configured with a large mass. However, the base with a steel box structure needs to be assembled and welded by thickening steel plates, which has high processing difficulty, and the base with a steel box structure also has the disadvantages of easy corrosion and high cost. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a floating power generation platform, aiming at solving the problems of high processing difficulty, poor corrosion resistance and high cost caused by the base with a steel box structure.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] Some embodiments of the present application provide a floating power generation platform, which comprises a platform body, a power generation device and a gravity base, the power generation device is connected and installed with the platform body through the gravity base, and the gravity base is a reinforced concrete structure.

[0007] In some embodiments, the gravity base comprises a bearing layer, and the bearing layer comprises a plurality of positioning base beams and a connecting beam. The positioning base beams are arranged in extension along a first straight line direction, and the first straight line direction is parallel to the main shaft direction of the power generation device. In one bearing layer, the plurality of positioning base beams are distributed at intervals along a second straight line, and at least two adjacent positioning base beams are fixedly connected through the connecting beam.

[0008] In some embodiments, the gravity base further comprises a supporting panel, which is fixedly connected to the upper side of the bearing layer and used for supporting the installation of the power generation device.

[0009] In some embodiments, the gravity base further comprises a supporting member, a plurality of bearing layers are distributed at intervals along a vertical direction, and adjacent two bearing layers are fixedly supported through the supporting member; the upper side of the uppermost one of the bearing layers is used for fixedly connecting the power generation device, and the lower side of the lowermost one of the bearing layers is used for fixedly connecting the platform body.

[0010] In some embodiments, the support member comprises at least one of a load-bearing wall and a load-bearing column.

[0011] In some embodiments, the support member comprises a load-bearing column, and at least a part of the load-bearing column is arranged as a ring beam structure perpendicular to the first straight line direction with the connecting beam.

[0012] In some embodiments, the gravity base is a box girder structure.

[0013] In some embodiments, the gravity base is a solid structure.

[0014] In some embodiments, the floating power generation platform further comprises a metal mold shell for pouring the gravity base of the reinforced concrete structure, and the metal mold shell and the gravity base are an integral structure.

[0015] In some embodiments, the gravity base is internally provided with a corrosion-resistant steel reinforcement structure.

[0016] In some embodiments, at least the gravity base is coated with a silane coating agent.

[0017] In some embodiments, the floating power generation platform further comprises a plurality of vibration isolators connected between the platform body and the gravity base and spaced apart for reducing vibration transmission between the platform body and the gravity base.

[0018] In some embodiments, the vibration isolator comprises a mounting top frame, a mounting bottom frame, a damping spring, and a damper. The mounting top frame is connected to the gravity base, the mounting bottom frame is connected to the platform body, and the mounting bottom frame and the mounting top frame are movably arranged in the vertical direction. The damping spring is arranged between the mounting top frame and the mounting bottom frame, and the damper is arranged between the mounting top frame and the mounting bottom frame.

[0019] In this way, the gravity base is connected between the platform body and the power generation equipment, so that the power generation equipment is installed through the gravity base and the platform body, thereby avoiding direct contact of the power generation equipment with the platform body. In this way, the gravity base with a larger weight is used to provide a more stable operating environment for the power generation equipment. The arrangement of the gravity base is conducive to reducing vibration and noise during operation of the power generation equipment, thereby improving the overall stability of the floating power generation platform.

[0020] On this basis, the gravity base is configured as a reinforced concrete structure. Compared with the base of a metal structure (such as a steel structure), although the density of the reinforced concrete is lower, the price of the reinforced concrete is much lower than the price of the steel, so that the gravity base of the reinforced concrete structure can be configured with a larger mass without considering the effect of the volume, but has the advantage of lower cost than the base of the steel structure. Moreover, through the higher stiffness advantage of the reinforced concrete structure, the gravity base has smaller shaft deformation in the direction of the main shaft of the power generation equipment, which is beneficial to improve the stability of the installation and operation of the power generation equipment.

[0021] Since the steel bars in the reinforced concrete structure are completely covered by the concrete, compared with the base of the exposed steel structure, the gravity base configured by the reinforced concrete has better corrosion resistance due to the concrete structure on the surface, which is beneficial to reduce the maintenance work in the later period. Moreover, the base of the steel structure needs to cut, align and weld the steel during the manufacturing process, especially the welding operation, which has higher professionalism and thus provides processing difficulty. The gravity base of the reinforced concrete structure only needs to set the steel inner bone and install the support template, and then the whole pouring can be carried out, which is simple in operation process and convenient for the processing and manufacturing of the gravity base. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 A front view of a floating power generation platform provided by the embodiments of the present application;

[0024] Figure 2 A first structure diagram of the gravity base shown in Figure 1

[0025] Figure 3 A second structure diagram of the gravity base shown in Figure 1

[0026] Figure 4 A third structure diagram of the gravity base shown in Figure 1

[0027] Figure 5 A structure diagram of the vibration isolator shown in Figure 1

[0028] REFERENCE SIGNS:

[0029] 100, floating power generation platform;​​​​

[0030] 10, platform body;

[0031] 20, power generation device; 21, power unit; 22, gearbox; 23, power generator unit;

[0032] 30, gravity base; 31, bearing layer; 311, positioning base beam; 312, connecting beam; 32, support member; 321, bearing column; 322, bearing wall; 33, support panel;

[0033] 40, vibration isolator; 41, mounting top frame; 42, mounting bottom frame; 43, damping spring; 44, damper. DETAILED DESCRIPTION

[0034] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated that there are many alternate embodiments that come within the scope of the present application. Accordingly, it is not intended that the present application be limited, for example, to the specific embodiments set forth below.

[0035] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0037] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only embodiment.

[0039] In the field of ocean development such as ships or offshore platforms, gas turbines or steam turbines are needed to ensure power supply. In floating structures such as ships or offshore platforms, in order to avoid harmful vibration of ships or offshore platforms equipped with gas turbines or steam turbines, a base with large mass is needed to avoid vibration impact of gas turbines or steam turbines on ships or offshore platforms during operation, and to reduce or avoid coupling vibration of gas turbines (or steam turbines) during operation.

[0040] In related solutions, the base is usually a steel box structure to control shaft deformation and is configured to have a large mass. However, the steel box structure base needs to be assembled and welded by thickening steel plates, which has high processing difficulty, and the steel box structure base also has the disadvantages of easy corrosion and high cost.

[0041] Taking the steel box structure base as an example, since the installation and use environment is mostly the marine atmospheric zone, for steel, the marine atmospheric zone is a strong corrosion environment. In order to ensure the durability of the structure, the steel box structure needs to use ship steel with better corrosion resistance than conventional steel, resulting in higher material prices. In addition, the steel box structure base also needs to be regularly painted and preserved, increasing the maintenance workload of the operator.

[0042] Due to the vibration and deformation control requirements, the base needs to have large inertia, that is, large mass. From the control of the vibration of the unit (base + generator set), whether it is a gas turbine base or a steam turbine base, the base and the machine (gas turbine, steam turbine) thereon need to have a certain weight ratio, such as the base needs to be several times the weight of the machine, which is beneficial to control the vibration of the unit. Based on this, the steel box structure needs to use thicker steel plates, which can not only increase the weight of the base, but also reduce the welding processing amount compared with conventional thickness steel plates. The thick plate (thickness direction performance steel plate) is a steel plate with anti-laminated tearing capacity in the direction perpendicular to the steel plate. The use of thick plates and the demand for large mass of the base, combined with the high price of steel, further increases the overall cost of the base.

[0043] In addition, from the perspective of vibration control, the large inertia of the base using the steel box structure controls the vibration and the large stiffness controls the deformation, which requires that each steel plate of the steel box structure be fully welded to form a solid whole. Taking a gas turbine base with a total weight of 516 tons of steel as an example, the weight of the weld accounts for about 1.5% of the total weight of the steel, that is, the weight of the steel welding core is 7.7 tons. These welding cores need to be welded by senior welders one by one, which has a very large amount of work and work difficulty, and further increases the cost of the base with the consumption of a large number of welding cores.

[0044] Based on this, the present application provides a floating power generation platform by improving the base to solve the problems of high processing difficulty, poor corrosion resistance and high cost caused by the base of the steel box structure.

[0045] Referring to Figure 1 , Figure 1 A front view of a floating power generation platform provided by the embodiment of the present application, the floating power generation platform 100 includes a platform body 10, a power generation device 20 and a gravity base 30, the power generation device 20 is connected and installed with the platform body 10 through the gravity base 30, and the gravity base 30 is a reinforced concrete structure.

[0046] For example, the platform body 10 can be a ship cabin, which is used for the installation and debugging of the power generation device 20 such as a gas turbine generator or a steam turbine generator. Alternatively, the platform body 10 can also be a floating, fixed, movable or semi-fixed work platform, such as a drilling platform.

[0047] The power generation device 20 can include a gas turbine generator set, a steam turbine generator set or an internal combustion generator set, which can be flexibly configured according to actual needs, and is not limited.

[0048] The gravity base 30 is connected between the platform body 10 and the power generation device 20, so that the power generation device 20 is connected and installed with the platform body 10 through the gravity base 30, thereby avoiding the direct contact of the power generation device 20 with the platform body 10. In this way, the gravity base 30 with a large weight is used to make the power generation device 20 have a more stable operation environment. Moreover, the setting of the gravity base 30 is beneficial to reduce the vibration and noise and the like during the operation of the power generation device 20, so as to improve the overall stability of the floating power generation platform 100.

[0049] On this basis, the gravity base 30 is configured as a reinforced concrete structure. Compared with the base of a metal structure (such as a steel structure), although the density of the reinforced concrete is lower, the price of the reinforced concrete is much lower than that of the steel, so that the gravity base 30 of the reinforced concrete structure can be configured with a larger mass, but has the advantage of lower cost than the base of the steel structure. Moreover, the gravity base 30 has a smaller shaft deformation in the main shaft direction of the power generation device 20 due to the higher stiffness of the reinforced concrete structure, which is beneficial to improve the stability of the installation and operation of the power generation device 20.

[0050] Since the steel bars in the reinforced concrete structure are completely covered by the concrete, compared with the base of the exposed steel structure, the gravity base 30 configured by the reinforced concrete has better corrosion resistance due to the concrete structure on the surface, which is beneficial to reduce the maintenance work in the later period. Moreover, the base of the steel structure needs to be cut, positioned and welded during the manufacturing process, especially the welding operation, which has higher professionalism and thus provides processing difficulty. The gravity base 30 of the reinforced concrete structure only needs to set the steel bar inner bone and install the support template, and then the whole can be poured, which is simple in operation process and convenient for the processing and manufacturing of the gravity base 30.

[0051] In some embodiments, the gravity base 30 can be a box girder structure. The box girder structure is a kind of bridge engineering, which is mostly hollow inside and has flanges on both sides of the upper part. For example, the supporting beam of the elevated bridge of the high-speed railway or the like.

[0052] In the embodiments of the present application, the overall mass of the gravity base 30 is adjusted by filling the inside of the box girder structure or increasing the edge thickness, so as to improve the stability of the power generation device 20 and the platform body 10. In addition, the box girder structure of the reinforced concrete made by the prestress method has good overall performance, torsional performance and lateral stiffness.

[0053] The vertical shear support wall can also be arranged in the inside of the box girder structure, and the shear wall is arranged to extend along the length direction of the gravity base 30, so as to improve the longitudinal stiffness of the box girder structure.

[0054] It should be noted that for the box-girder structure, the gravity base 30 is isolated from the outside by closing the openings at both ends in the longitudinal direction. This allows only the corrosion-resistant coating to be applied to the outside of the gravity base 30, which helps to reduce the difficulty of maintenance work on the gravity base 30.

[0055] In some embodiments, the gravity base 30 may be a solid structure, so as to significantly increase the overall mass of the gravity base 30 within a smaller space, so that the power generation device 20 can operate stably and for a long time.

[0056] Furthermore, in the reinforced concrete gravity base 30, the weight of steel bars accounts for approximately 5%, compared to approximately 95% of other concrete structures. Since the price of concrete is much lower than 1 / 10 of the price of steel bars, and is generally 1 / 20 of the price of steel bars, in the embodiment of the present application, the reinforced concrete structure replaces the integral steel box gravity base. Under the same quality conditions, the cost of the reinforced concrete gravity base 30 is approximately 1 / 10 of that of the steel box structure, which offers a significant economic advantage. Under the same material cost conditions, the reinforced concrete gravity base 30 can meet the structural requirements of greater mass and higher volume.

[0057] In addition, the gravity base 30 can also be a beam-slab frame structure. Figure 2 and Figure 3 As shown, Figure 2 for Figure 1 A first structural diagram of the gravity base 30 is shown in FIG. Figure 3 for Figure 1 , a second structural schematic diagram of a gravity base 30 is shown. The gravity base 30 comprises a bearing layer 31, which includes multiple positioning beams 311 and connecting beams 312. The positioning beams 311 extend along a first linear direction (i.e., the X-direction), which is parallel to the main axis of the power generation device 20. Within a bearing layer 31, multiple positioning beams 311 are spaced apart along a second linear direction (i.e., the Y-direction), and at least two positioning beams are fixedly connected by one or more connecting beams 312 to form a stable frame structure.

[0058] Compared with the grid-shaped hollow steel base (steel box structure), the gravity base 30 made of solid reinforced concrete has higher overall rigidity, can better meet the requirements of the long shaft system and high deformation control requirements of the power generation equipment 20 (including the gas turbine and generator), can better isolate the shaft system deformation of the power generation equipment 20 caused by the deformation of the platform body 10 such as the hull, and is conducive to improving the stability and smoothness of the operation of the power generation equipment.

[0059] The angle between the first linear direction and the second linear direction may be an acute angle, an obtuse angle or a right angle, which is not limited. In the embodiments of the present application, the first linear direction and the second linear direction are generally perpendicular to each other.

[0060] Based on this, within the bearing layer 31, by adjusting the spacing, distribution, and number of positioning beams 311 and connecting beams 312, the power generation equipment 20 and / or the platform body 10 are fixedly connected, forming a stable frame structure for the bearing layer 31. By adjusting the cross-sectional area of ​​the positioning beams 311 and connecting beams 312, the installation height of the power generation equipment 20 can be adjusted while also adjusting the volume and overall mass of the gravity base 30. This allows for adaptability to power generation equipment 20 of varying specifications and types, maintaining stable operation of the platform body 10 and the power generation equipment 20.

[0061] For example, within the gravity base 30, the bearing layer 31 can be provided as only one layer, that is, the gravity base 30 is approximately a planar beam structure. In this case, the upper side of at least one of the positioning beam 311 and the connecting beam 312 is used for fixed connection to the power generation equipment 20, and the lower side is used for fixed connection to the platform body 10.

[0062] Or, as Figure 2 and Figure 4 As shown, Figure 4 for Figure 1 A third structural schematic diagram of the gravity base 30 is shown in FIG. Within the gravity base 30, the bearing layers 31 may also be provided in two, three, or more layers. Exemplarily, the gravity base 30 further includes a support member 32, with the multiple bearing layers 31 spaced apart in the vertical direction, and adjacent bearing layers 31 supported and fixed by the support member 32. The upper side of the topmost bearing layer 31 is used for fixed connection to the power generation equipment 20, and the lower side of the bottommost bearing layer 31 is used for fixed connection to the platform body 10.

[0063] The support members 32 are arranged so that two or more load-bearing layers 31 are fixedly connected in a vertical direction by the support members 32 to form a stable frame structure. In this case, the gravity base 30 is approximately a space frame structure.

[0064] For example, consider two support layers 31 spaced apart in the vertical direction. On the upper support layer 31, the mounting node for connecting the power generation device 20 is at least partially the intersection of the positioning base beam 311 and the connecting beam 312, i.e., the first intersection. Correspondingly, on the lower support layer 31, the mounting node for connecting the platform body 10 is at least partially the intersection of the positioning base beam 311 and the connecting beam 312, i.e., the second intersection.

[0065] Based on this, taking the support member 32 as an example, which is a load-bearing column 321. In the vertical direction, the load-bearing column 321 fixedly connected between two adjacent load-bearing layers 31 can be fixedly connected with the first intersection node and the second intersection node. So that the positioning base beam 311, the connecting beam 312 and the load-bearing column 321 extending in three different directions at the first intersection node (the second intersection node) improve the overall stability of the space frame structure.

[0066] Alternatively, the support member can also be provided as a load-bearing wall 322. The load-bearing wall 322 is fixedly connected between two adjacent positioning base beams 311 in the vertical direction, and is spaced apart or extends in the first linear direction.

[0067] Taking the load-bearing layer 31 as an example, which is a double-layer structure spaced apart in the up-down direction and extends in the front-back direction. Between the four positioning base beams 311 on the left and right sides of the two load-bearing layers 31. A continuous load-bearing wall 322 can be fixedly provided between the two positioning base beams 311 on the left side, and a continuous load-bearing wall 322 can be fixedly provided between the two positioning base beams 311 on the right side, to form a gravity base 30 with supporting walls on the left and right sides.

[0068] In addition, if three or more positioning base beams 311 spaced apart in the second linear direction are provided in the load-bearing layer 31. One or more load-bearing walls 322 can be provided in the middle of the load-bearing layer 31 in the second linear direction, so that the load-bearing wall 322 is fixedly connected between two adjacent positioning base beams 311 in the vertical direction. That is, three or more load-bearing walls 322 spaced apart in the first linear direction are used to support the load-bearing layer 31 above and the power generation equipment 20.

[0069] In some embodiments, in the vertical direction, a plurality of load-bearing columns 321 and corresponding load-bearing walls 322 can also be provided between two adjacent load-bearing layers 31. For example, the left and right sides of the two load-bearing layers 31 are fixedly connected by two load-bearing walls 322, and the middle of the two load-bearing layers 31 is fixedly supported by a plurality of load-bearing columns 321 spaced apart. Alternatively, the left and right sides of the two load-bearing layers 31 are supported by a plurality of load-bearing columns 321 spaced apart in a linear direction, and the middle of the two load-bearing layers 31 is provided with a load-bearing wall 322 extending in the first linear direction. This is not limited.

[0070] In addition, as shown in Figure 4 The gravity base 30 also includes a support panel 33 fixedly connected to the upper side of the load-bearing layer 31 for supporting the installation of the power generation equipment 20.

[0071] For example, if the gravity base 30 only includes one load-bearing layer 31 and one support panel 33 fixedly connected above the load-bearing layer 31, the gravity base 30 formed by the support panel 33 is approximately a flat slab structure.

[0072] Alternatively, the gravity base 30 can also include a plurality of bearing layers 31, two or more bearing layers 31 being spaced apart in the vertical direction and fixedly connected by support members 32, and a support panel 33 being fixedly connected above the uppermost bearing layer 31 for positioning and mounting of the power generation equipment 20, approximating a space beam panel structure.

[0073] By supporting the power generation equipment 20 through the support panel 33, the upper side of the gravity base 30 is provided with an operation plane, facilitating maintenance and repair work of the power generation equipment 20 by the operator on the support panel 33.

[0074] In some embodiments, the gravity base 30 includes two bearing layers 31 and a support panel 33, and the two bearing layers 31 are fixedly supported at least on the left and right sides by bearing walls 322. The two bearing layers 31 can also be fixedly supported on the front and back sides by bearing walls 322, thereby stabilizing the bearing of the power generation equipment 20 above, and improving the air tightness of the interior of the gravity base 30 through the plurality of bearing walls 322 and the support panel 33, so as to reduce the floating effect of the interior by external corrosive liquids or gases, and facilitate maintenance and repair work.

[0075] In addition, the gravity base 30 can also include a bearing bottom plate fixedly connected to the lower side of the bearing layer 31. Taking the gravity base 30 including two bearing layers 31, a support panel 33 and a plurality of bearing walls 322 as an example, the bearing bottom plate can be fixedly connected to the lower side of the lower bearing layer 31, so as to further improve the air tightness of the interior of the gravity base 30, and facilitate maintenance and repair work. At this time, the left and right and upper and lower directions of the gravity base 30 can be configured as a closed box structure. The upper and lower, left and right, and front and back directions of the gravity base 30 can also be configured as a closed box structure.

[0076] For example, in the space beam structure (i.e., the plurality of bearing layers 31), the space beam panel structure and the box structure, at least part of the bearing columns 321 are matched with the connecting beams 312 and configured as a ring beam structure perpendicular to the first straight line direction. In addition, part of the bearing columns 321 can also form a stable ring beam structure with the positioning base beam 311 in the plane perpendicular to the second straight line direction, so as to improve the structural stability of the gravity base 30.

[0077] In some embodiments, as shown in FIG. 2, the power generation equipment 20 includes a power unit 21, a gearbox 22 and a generator set 23, and the power unit 21 is driven to rotate by fuel combustion, and the generator set 23 is driven to generate electricity by the gearbox 22 along the main shaft direction. The power unit 21 can be a gas turbine, a steam turbine or an internal combustion engine, and is not limited in this regard. Figure 1 ​

[0078] Based on this, the power generation equipment 20 as a whole has a high demand for flatness, and the installation position height at different main shaft positions is different due to the demand of the power unit 21, the gearbox 22 and the generator set 23. The height position of the upper side of the gravity base 30 along the first linear direction can be flexibly adjusted according to actual needs.

[0079] Taking the gravity base 30 as an example, the gravity base 30 is a space beam structure. Different lengths (such as the first linear direction) and different widths (such as the second linear direction) of the bearing layer 31 are arranged at one or more bearing layers 31 above, so that the gravity base 30 has different installation heights at different positions on the upper side. Alternatively, the thickness dimension of the positioning base beam 311 and the connecting beam 312 in the vertical direction in the uppermost bearing layer 31 can be adjusted to make the gravity base 30 have corresponding installation heights at different positions on the upper side.

[0080] On this basis, the support panel 33 arranged above the bearing layer 31 can be adjusted according to actual needs to make the different positions on the upper side of the gravity base 30 have different installation heights. Alternatively, the gravity base 30 can also include a support seat arranged on the upper side of the support panel 33 or the bearing layer 31, and the installation height of the upper side of the gravity base 30 at different positions can be flexibly adjusted by fixing the support seat on the upper side of the gravity base 30.

[0081] Based on this, in the embodiments of the present application, the gravity base 30 of the reinforced concrete structure has fewer components than the base of the steel structure. On this basis, the steel reinforcement framework inside the gravity base 30 can use marine corrosion-resistant steel reinforcement, avoiding the need to lengthen the anchoring length when using coated steel reinforcement, greatly simplifying design and construction. In addition, the dynamic calculation of the reinforced concrete structure reduces the modeling and calculation workload compared to the dynamic calculation of the steel box structure, thereby shortening the design cycle. The main requirements of the reinforced concrete structure construction technology are the steel reinforcement and formwork engineering. Compared with steel structure processing and welding, there is more flexibility in the selection of the number of types of workers, the daily wage is low, and the total working hours are less. And the pouring of reinforced concrete is integrally formed, without the need for cutting, precise splicing and welding operations like steel box structures. The reinforced concrete pouring and forming time can be completed in a few hours, greatly simplifying the processing and manufacturing process.

[0082] Overall, the present application innovatively applies a reinforced concrete structure system to use the reinforced concrete structure base in the long-term fixed-point anchoring floating natural gas power generation industry, because the power generation platform basically does not need to sail. Thus, the disadvantage of increasing the shipping cost due to the increase in the structure weight caused by using the reinforced concrete structure is avoided. On this basis, the advantages of the gravity base 30 of the reinforced concrete structure, which has a large weight, a large inertia, a large damping and is beneficial to vibration control, compared with the steel box base, are exerted.

[0083] Meanwhile, by learning from the advantage of the adjustable spacing between steel plates of the steel box structure, the single solid plate structure is developed into a flat beam plate structure, a flat beam structure, and a box-type structure similar to a railway bridge to improve the adjustability of the weight control and stiffness control of the reinforced concrete structure. The problem of needing to use mesh welding to ensure that the out-of-plane stiffness of the thin shell reaches the structural stability effect is avoided, and the advantage of the inherent structural stability of the reinforced concrete structure is exerted.

[0084] In this way, by applying the gravity base 30 of the reinforced concrete structure to the marine atmospheric environment, by adjusting the concrete mix ratio, a form of marine high-performance concrete corrosion-resistant steel reinforcement base is formed. The marine concrete structure can ensure the bond force between the steel bar and the concrete by using corrosion-resistant steel bars, avoiding the need to increase the anchoring length when using coated steel bars. The crack problem of the concrete structure is solved by controlling the composition and proportion of the concrete material itself and the concrete surface corrosion prevention technology, thereby fundamentally improving the purpose of replacing the offshore steel box base with the onshore concrete base.

[0085] Based on this, by structural calculation and control of the reinforcement ratio, the crack size is controlled within the specification limit, thereby achieving the purpose of controlling the crack of the concrete structure to meet the normal use requirements of the concrete structure in the marine atmospheric environment and the durability requirement of the structural design. In addition, by adjusting the proportion of different materials in the concrete, i.e., the mix design, different admixtures and additives are added to achieve the requirements of not easy to crack and durability. The concrete can also be surface-coated, such as silane immersion, to meet the durability design requirements, and several methods can be used together.

[0086] For example, the gravity base 30 is coated with an anti-corrosion agent. The anti-corrosion agent includes a silicate anti-corrosion agent, a phosphate anti-corrosion agent, or an organic silicon anti-corrosion agent, etc., and can be sodium methylsiliconate, sodium ethylsiliconate, polyethylhydroxysiloxane, or silane, etc. In this way, by brushing the anti-corrosion agent, such as silane paint, on the surface of the gravity base 30 of the concrete, the silane paint can be immersed from the surface of the reinforced concrete and form a protective layer, thereby avoiding the problem of the penetration of corrosive gases or liquids from the surface of the concrete structure.

[0087] In some embodiments, after the surface of the reinforced concrete structure is coated with the silane paint, a corrosion-resistant paint can also be applied to the outer layer to further improve the corrosion resistance of the reinforced concrete structure.

[0088] The gravity base 30 of the reinforced concrete structure will be selected according to the requirements of the relevant stiffness control, vibration control (displacement / speed / acceleration), weight control of the structure vibration calculation, from the plane flat slab structure, plane beam slab structure, plane beam structure, railway bridge type box structure, to meet the requirements of the structure calculation. The top surface arrangement of the concrete structure base will be according to the installation requirements of the power generation equipment 20, and the same top surface arrangement (such as elevation, plane size, embedded iron parts, bolt holes, etc.) as the steel structure base is adopted.

[0089] In some embodiments, for the reinforced concrete structure of the gravity base 30, the problem of steel bar rust prevention can be solved by using epoxy coated steel bars, hot-dip galvanized steel bars, stainless steel bars, etc. For epoxy coated steel bars, the anchoring length needs to be lengthened to improve the gripping force of the steel bars and the concrete.

[0090] In addition, marine corrosion-resistant steel bars can also be used, which have a corrosion rate of less than 20% compared to ordinary steel bars, to ensure that in the case of concrete cracking, the structure will not be affected by the decrease in structural strength caused by steel bar corrosion, thereby greatly reducing the crack control requirements and the requirement for reinforcement amount, which is beneficial to reduce the cost. After taking the above concrete and steel bar corrosion prevention measures, it can be ensured that the floating structure can be maintained and efficiently and safely generate power within the design service life. The cost of materials and structure is also reduced, thereby avoiding the high cost and poor maintenance of the steel structure base.

[0091] The present application uses a reinforced concrete structure of the gravity base 30, and the labor consumption amount is compared by approximate calculation. The concrete structure base consumes more labor hours than the steel structure base, so the steel structure manufacturing and processing time is longer, the amount of steel material of the concrete base is less, the corresponding labor hours are less, and the required technical content is lower, which will shorten the manufacturing time of the concrete structure base, and because the concrete structure base can be reused, the manufacturing and processing time and production cost will be further shortened, and the overall manufacturing time of the concrete structure base will be shorter than that of the steel structure base.

[0092] Due to the change of the material of the gravity base 30, after the dynamic foundation calculation of the reinforced concrete base is completed, the calculation of the ship structure (platform main body 10) will be carried out. This includes the adjustment of the ship's center of gravity caused by the change of the base weight. Considering the combination of the power generation equipment 20 and the gravity base 30, under the condition of equal volume, the gravity base 30 of the reinforced concrete structure can further reduce the center of gravity of the combination compared with the steel base. In addition, in order to ensure the stability of the ship body (platform main body 10), the ship body's buoyancy and stability calculation and the ship structure calculation are carried out to match the ship body and the gravity base 30 structure.

[0093] In some embodiments, the floating power generation platform 100 further includes a metal mold shell, which is used to cast the gravity base 30 of the reinforced concrete structure, and the metal mold shell and the gravity base 30 are an integrated structure.

[0094] The metal mold shell can be a prefabricated component, such as a split component or a single-piece component. After the metal mold shell is manufactured in a factory and transported to the corresponding floating power generation platform 100, the split metal mold shell is assembled by splicing and then the steel frame is arranged. After that, concrete is poured to form the gravity base 30 and the metal mold shell into a single-piece structure.

[0095] In this way, the metal formwork serves solely as a formwork structure, significantly reducing its thickness and metal usage. The metal outer shell provides protection and corrosion protection for the reinforced concrete structure within. Furthermore, by prefabricating the metal formwork, the workload associated with assembling the reinforced concrete structure during the formwork assembly process is further reduced, facilitating faster production of the gravity base 30.

[0096] It should be noted that, in the process of casting the gravity base 30 through the metal formwork, the entire metal formwork can be used to replace the assembly formwork, or part of the metal formwork can be used to replace part of the assembly formwork, and this is not limited.

[0097] In some embodiments, as Figure 1 and Figure 5 As shown, Figure 5 for Figure 1 The floating power generation platform 100 further includes a plurality of vibration isolators 40 , which are connected between the platform body 10 and the gravity base 30 and spaced apart to reduce vibration transmission between the platform body 10 and the gravity base 30 .

[0098] Vibration isolators 40 are installed beneath the reinforced concrete gravity base 30. The gravity base 30, through its weight and high stiffness, isolates vibrations transmitted from the vibrating components of the power generation equipment 20 to the hull (platform body 10) and structural deformations from the hull. The high deformation properties of elastic components such as springs in the vibration isolators 40 effectively absorb deformations from the hull. The low stiffness of elastic components such as springs in the vibration isolators 40 absorbs vibrations from mechanical equipment such as the gas / steam turbine, preventing them from being transmitted to the hull. This ensures structural safety. Furthermore, the coordinated arrangement of the gravity base 30 and the vibration isolators 40 facilitates a lightweight design for the gravity base 30 while ensuring vibration absorption, thereby reducing the structural strength and steel requirements of the platform body 10.

[0099] For example, Figure 5As shown, the vibration isolator 40 includes a mounting top frame 41 connected with the gravity base 30 (as shown, such as a gravity base 30 of a wind turbine), a mounting bottom frame 42 connected with the platform body 10, and a damping spring 43 and a damper 44 arranged between the mounting top frame 41 and the mounting bottom frame 42. Figure 1 As shown, the vibration isolator 40 includes a mounting top frame 41 connected with the gravity base 30 (as shown, such as a gravity base 30 of a wind turbine), a mounting bottom frame 42 connected with the platform body 10, and a damping spring 43 and a damper 44 arranged between the mounting top frame 41 and the mounting bottom frame 42.

[0100] Based on this, the mounting top frame 41 and the mounting bottom frame 42 are arranged in a vertical direction between the gravity base 30 and the platform body 10, and the damping spring 43 and the damper 44 are arranged between the mounting top frame 41 and the mounting bottom frame 42. In this way, the damping spring 43 is arranged to absorb or release the vibration transmitted at the gravity base 30 or the platform body 10, and the damper 44 is arranged to dissipate the vibration energy during the release of the vibration, thereby reducing or controlling the transmission and impact of the vibration.

[0101] In this way, in the present application, the gravity base 30 of the reinforced concrete structure replaces most of the steel material with concrete to greatly reduce the material cost. Moreover, the reinforced concrete structure only needs the construction industry to meet the production and processing requirements, thereby greatly reducing the high-technology steel processing and welding work, thereby effectively reducing the labor cost and processing difficulty.

[0102] By calculating the reinforcement and crack resistance of the reinforced concrete structure, adding special admixture, reasonable high-performance marine corrosion-resistant concrete mix ratio test, using silane impregnation as surface treatment protection, marine corrosion-resistant steel, etc., the cost can be controlled, and the reinforced concrete structure gravity base 30 has obvious advantages over the steel structure base. Within the design service life, the reinforced concrete structure gravity base 30 can achieve the effect of maintenance-free or less maintenance, further reducing the operation and maintenance cost.

[0103] The reinforced concrete structure is arranged to make the gravity base 30 have better structural rigidity. Compared with the steel structure base, the gravity base 30 can better control the shaft deformation of the power generation equipment 20 from the base itself, and can better isolate the shaft deformation of the power generation equipment 20 caused by the deformation of the ship body (platform body 10). In addition, the damping ratio of the reinforced concrete is obviously higher than that of the steel box structure, which can better reduce the resonance peak value of the vibration and bring good effect to the vibration control.

[0104] Therefore, compared with the steel structure base, the reinforced concrete structure gravity base 30 has less steel content, less processing time, low technical content, and reusable concrete formwork, so that the reinforced concrete structure gravity base 30 has a shorter processing and manufacturing cycle than the steel structure base. In addition, the reinforced concrete structure gravity base 30 is set as a solid structure, which can control the vibration problem of the dynamic machine foundation with a smaller volume than the steel structure base.

[0105] In addition, in the scheme of the present application, the proportioning design of the concrete is adjusted to make the reinforced concrete structure gravity base 30 have good anti-freezing, anti-permeability, large volume, corrosion resistance and crack resistance and other characteristics. In specific applications, different characteristics of the gravity base 30 can be provided according to the application environment characteristics of the floating power generation platform combined with the concrete formula. For example, the A-type gravity base 30 has good frost resistance to adapt to the extremely cold characteristics of the north and south polar regions and the waterway. The B-type gravity base 30 has good anti-permeability to adapt to the high humidity and high salt fog characteristics of the sea. The C-type gravity base 30 has a large volume to adapt to the characteristics of large thickness and large volume of the power generation equipment requirement base, which is beneficial to reduce the hydration heat of the concrete structure and avoid heat accumulation to achieve the purpose of controlling thermal cracks. The D-type gravity base 30 has good corrosion resistance, and the configuration of the internal corrosion-resistant steel and the application of silane impregnation can adapt to the conditions of continuous high-frequency fatigue use of the gravity base 30 in a strong corrosive environment, ensuring the safety of the structure corrosion resistance. The E-type gravity base 30 has good crack resistance, which is achieved through 18 crack whole-process control measures in the design, construction and operation and maintenance processes, which other concrete structures do not have. In this way, one or more of the above characteristics can be combined and applied to make the reinforced concrete structure gravity base 30 meet the operation requirements in various complex environments and lay a solid foundation for the stable deployment of the floating platform in a wide range.

[0106] The technical features of the above embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0107] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A floating power generation platform, characterized by, The floating power generation platform comprises a platform body (10), a power generation device (20) and a gravity base (30), the power generation device (20) is connected and installed with the platform body (10) through the gravity base (30), and the gravity base (30) is a reinforced concrete structure.

2. Floating power generating platform according to claim 1, characterized in that The gravity base (30) comprises a bearing layer (31), the bearing layer (31) comprises: a plurality of positioning base beams (311), the positioning base beams (311) are arranged along a first linear direction, and the first linear direction is parallel to a main shaft direction of the power generation device (20); and a connecting beam (312), in one bearing layer (31), a plurality of the positioning base beams (311) are distributed along a second linear direction, and at least two adjacent positioning base beams (311) are fixedly connected through the connecting beam (312).

3. Floating power generating platform according to claim 2, characterized in that, The gravity base (30) further comprises: a support panel, the support panel is fixedly connected to the upper side of the bearing layer (31) and is used for supporting and installing the power generation device (20).

4. The floating power generating platform of claim 2, wherein, The gravity base (30) further comprises: a support member (32), a plurality of the bearing layers (31) are distributed along a vertical direction, adjacent bearing layers (31) are fixedly supported through the support member (32), the upper side of the uppermost bearing layer (31) is used for fixedly connecting the power generation device (20), and the lower side of the lowermost bearing layer (31) is used for fixedly connecting the platform body (10).

5. Floating power generating platform according to claim 4, characterized in that, The support member (32) comprises at least one of a bearing wall (322) and a bearing column (321); and / or, the support member (32) comprises the bearing column (321), and at least part of the bearing column (321) and the connecting beam (312) are arranged as a ring beam structure perpendicular to the first linear direction.

6. The floating power generating platform of claim 1, wherein, The gravity base (30) is a box girder structure; and / or, the gravity base (30) is a solid structure.

7. Floating power generating platform according to any of claims 1 to 6, characterized in that, The floating power generation platform further comprises a metal mold shell, the metal mold shell is used for pouring the gravity base (30) of the reinforced concrete structure, and the metal mold shell and the gravity base (30) are an integral structure; and / or, the gravity base (30) is internally provided with a corrosion-resistant steel reinforcement structure.

8. Floating power generating platform according to any of claims 1 to 6, characterized in that, At least the gravity base (30) is coated with a silane coating agent.

9. Floating power generating platform according to any of claims 1 to 6, characterized in that, The floating power generation platform further comprises: a plurality of vibration isolators, the plurality of vibration isolators are connected between the platform body (10) and the gravity base (30) and are distributed at intervals, and are used for reducing vibration transmission between the platform body (10) and the gravity base (30).

10. Floating power generating platform according to claim 9, characterized in that The vibration isolator comprises: a mounting top frame (41) connected with the gravity base (30); a mounting bottom frame (42) connected with the platform body (10), and the mounting bottom frame (42) and the mounting top frame (41) are movably arranged along a vertical direction; a damping spring (43) arranged between the mounting top frame (41) and the mounting bottom frame (42); and a damper fixedly connected between the mounting top frame (41) and the mounting bottom frame (42).

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