Offshore floating platform and modular multifunctional offshore floating platform system

Abstract

The invention belongs to the technical field of ocean engineering, and particularly provides an offshore floating platform and a modular multifunctional offshore floating platform system.The offshore floating platform comprises a main body structure layer, a building module layer and a floating body layer, and the main body structure layer is provided with a plurality of buffer assemblies; the buffering assembly comprises a fixing sleeve, a supporting rod and a buffering mechanism. The buffer mechanism is arranged in the fixed sleeve, a flowing gap is reserved between a lantern ring of the buffer mechanism and a vertical rod of the I-shaped section of the supporting rod, and the flowing gap is filled with magnetorheological fluid; the lantern ring comprises a middle fixed section, a first flexible section and a second flexible section; the first pneumatic sleeve is positioned on the outer side of the first flexible section; the second pneumatic sleeve is positioned on the outer side of the second flexible section; and the winding coil is wound on the circumferential outer wall of the middle fixed section. The offshore floating platform can counteract vertical fluctuation energy caused by the action of waves or tides in real time, so that vertical vibration of the offshore floating platform can be buffered, the stability and safety of the building module layer are ensured, and the offshore operation difficulty is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of ocean engineering, and specifically relates to an offshore floating platform and a modular multi-functional offshore floating platform system. Background Art

[0002] The Chinese invention patent with the publication number CN113148039B and the name of "modular super-large floating platform" includes a number of box modules, a number of semi-submersible modules, and an anchor chain mooring system for mooring the semi-submersible modules, and also includes a wave energy power generation device, a hydraulic power generation mechanism, and a tuned heaving device.

[0003] In the above technology, the modular super-large floating platform is composed of semi-submersible modules and box modules together. The adjacent modules are movably connected. The outer box modules can be used as floating breakwaters and have a certain wave dissipation function, making the entire modular super-large floating platform safe and stable, and having expandability and deployment flexibility; the relative movement between the outer box modules and the inner semi-submersible modules can drive the wave energy power generation device to generate electricity, which can not only reduce the hydrodynamic response of the modular super-large floating platform under deep-sea waves, but also improve the utilization efficiency of wave energy and reduce the utilization cost.

[0004] However, the offshore environment is harsh. The offshore floating platform is extremely prone to vertical vibration under the action of the vertical undulating energy of tides or waves, resulting in easy damage to the platform and unstable working surfaces of the platform, limiting the offshore operation efficiency and the safety cannot be guaranteed, and it cannot provide a safe, stable and comfortable working environment for relevant practitioners, restricting the development and utilization of the ocean. The uncertainty and risk of the offshore operation environment require that the ocean engineering platform must have highly secure protection measures, but there are still certain deficiencies in this regard.

[0005] Based on the above situation, there is still room for improvement in the existing offshore floating platforms. Summary of the Invention

[0006] The present invention provides an offshore floating platform and a modular multi-functional offshore floating platform system, which can solve the problem in the prior art that the offshore floating platform is affected by waves or tides, resulting in a relatively large vertical vibration amplitude, easy damage to the platform, and difficult offshore operation.

[0007] To achieve the purpose of solving the above technical problems, the present invention is implemented by adopting the following technical solutions. An offshore floating platform includes: A main structure layer, including a fixed truss and an annular central frame. A hollow part is formed by penetrating up and down at the center of the fixed truss. The central frame is installed in the hollow part, and a plurality of buffer components are arranged circumferentially on the central frame; A building module layer, which is installed above the central frame and the buffer assembly; A floating body layer, which includes floating body components uniformly installed at the lower part of the fixed truss for providing buoyancy; The buffer assembly includes a fixed sleeve, a support rod and a buffer mechanism; the fixed sleeve is fixed on the central frame, with a closed lower end and an opening formed at the upper end; the support rod is inserted into the fixed sleeve and can slide up and down along the axial direction of the fixed sleeve, and the building module layer is fixedly connected to the upper end of the support rod, and a part of the support rod located inside the fixed sleeve forms an I-shaped section; The buffer mechanism is arranged inside the fixed sleeve and includes a collar, a first pneumatic sleeve, a second pneumatic sleeve, a winding coil and a first elastic buffer element; the collar is sleeved on the vertical rod of the I-shaped section and there is a flow gap between the collar and the vertical rod, and the flow gap is filled with magnetorheological fluid; the collar includes a fixed middle section, a first flexible section connected between the upper horizontal plate of the I-shaped section and the upper end of the middle section, and a second flexible section connected between the lower horizontal plate of the I-shaped section and the lower end of the middle section; the first pneumatic sleeve is connected between the upper horizontal plate of the I-shaped section and the upper end of the middle section and is located outside the first flexible section, and the first pneumatic sleeve is externally connected to a first high-pressure air pump; the second pneumatic sleeve is connected between the lower horizontal plate of the I-shaped section and the lower end of the middle section and is located outside the second flexible section, and the second pneumatic sleeve is externally connected to a second high-pressure air pump; the winding coil is wound around the outer wall of the middle section, and the viscosity of the magnetorheological fluid is adjusted by changing the current passing through the coil; the first elastic buffer element is arranged between the lower horizontal plate of the I-shaped section and the lower end of the fixed sleeve.

[0008] In some embodiments, the buffer mechanism further includes a second elastic buffer element, and the second elastic buffer element is arranged between the upper horizontal plate of the I-shaped section and the upper end of the fixed sleeve.

[0009] In some embodiments, the flow gap is divided into a middle section corresponding to the middle section, a first section corresponding to the first flexible section, and a second section corresponding to the second flexible section; the inner diameter of the middle section is smaller than the inner diameter of the first section and also smaller than the inner diameter of the second section, and the connection end between the middle section and the first section is in a flared shape, and the connection end between the middle section and the second section is in a flared shape.

[0010] In some embodiments, a plurality of the first pneumatic sleeves are circumferentially distributed uniformly, and a plurality of the second pneumatic sleeves are circumferentially distributed uniformly.

[0011] In some embodiments, the outer circumferential wall of the middle fixing section fits and is fixedly connected to the inner wall of the fixing sleeve, and an annular groove is formed on the outer circumferential wall of the middle fixing section, and the winding coil is arranged in the annular groove.

[0012] In some embodiments, a flexible seal is provided above the fixing sleeve. The upper end of the flexible seal is fixedly and sealingly connected to the part of the support rod outside the fixing sleeve, and the lower end is fixedly and sealingly connected to the upper end of the fixing sleeve to seal the gap between the support rod and the upper opening of the fixing sleeve.

[0013] In some embodiments, a damping reduction mechanism is installed at the center of the building module layer. The damping reduction mechanism includes a sunken chamber, a counterweight, and an elastic telescopic member. The sunken chamber is formed below the bottom plate of the building module layer. The counterweight is located in the sunken chamber. The upper end of the counterweight is suspended and connected to the upper end of the building module layer by a steel cable. Elastic telescopic members are evenly arranged circumferentially between the lower end of the counterweight and the sunken chamber. One end of the elastic telescopic member is hinged to the counterweight, and the other end is hinged to the circumferential side wall of the sunken chamber.

[0014] In some embodiments, the elastic telescopic member includes a telescopic sleeve rod and a telescopic spring. The telescopic sleeve rod includes an outer rod and an inner rod that are telescopically sleeved. One end of the outer rod is hinged to the circumferential side wall of the sunken chamber, and the other end is sleeved with the inner rod. The exposed end of the inner rod is hinged to the counterweight, and the telescopic spring is sleeved on the exposed part of the inner rod.

[0015] In some embodiments, a connecting frame is provided between the fixed truss and the central frame. The connecting frame is fixedly connected to the central frame and the fixed truss. The connecting frame is formed by connecting a plurality of transverse beams and a plurality of longitudinal beams into a grid shape, and a photovoltaic power generation module is detachably installed in each grid; A plurality of wave energy power generation modules are arranged below the fixed truss.

[0016] In some embodiments, a modular multi-functional offshore floating platform system is also proposed, which includes a plurality of the above-mentioned offshore floating platforms, and the plurality of offshore floating platforms are spliced in an array.

[0017] Compared with the prior art, the present invention has the following advantages and positive effects: For the offshore floating platform of the present invention, its buffering mechanism controls the air extraction and injection of the first pneumatic sleeve and the second pneumatic sleeve respectively through the first high-pressure air pump and the second high-pressure air pump, and adjusts the viscosity of the magnetorheological fluid by changing the energizing current of the winding coil. Through the synergistic effect, it can offset the vertical undulating energy caused by waves or tides in real time, buffer the vertical vibration of the offshore floating platform, greatly reduce the vertical vibration amplitude of the offshore floating platform, ensure the stability and safety of the upper building module layer, and reduce the difficulty of offshore operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the offshore floating platform in the embodiment of the present invention; Figure 2 It is a top view of the offshore floating platform in the embodiment of the present invention after omitting the tower; Figure 3 It is a schematic partial sectional structure diagram of the offshore floating platform in the embodiment of the present invention; Figure 4 It is a schematic structural diagram of the offshore floating platform in the embodiment of the present invention after omitting the building module layer; Figure 5 It is a schematic structural diagram of the connecting support between the fixed truss and the diagonal of the central frame of the offshore floating platform in the embodiment of the present invention; Figure 6 It is a schematic structural diagram of the connecting support between the fixed truss and the side of the central frame of the offshore floating platform in the embodiment of the present invention; Figure 7 It is a schematic sectional structure diagram of the buffering assembly of the offshore floating platform in the embodiment of the present invention; Figure 8 It is a schematic assembly structure diagram of the main structure layer, the supporting plate, the tower floating body layer, and the damping reduction mechanism of the offshore floating platform in the embodiment of the present invention; Figure 9 It is a schematic structural diagram of the building module layer of the offshore floating platform in the embodiment of the present invention; Figure 10 It is a schematic assembly structure diagram of the supporting plate, the tower and the damping reduction mechanism in the embodiment of the present invention; Figure 11 It is a schematic cross-sectional structure diagram of the damping reduction mechanism in the embodiment of the present invention.

[0020] Reference numerals: 100, main structure layer; 110, fixed truss; 111, hollow part; 120, central frame; 121, mounting hole; 130, connecting frame; 140, mounting plate; 150, support member; 151, end support member; 152, intermediate support member; 160, protective fence; 200, building module layer; 210, supporting plate; 211, through hole; 220, tower; 230, container; 300, floating body layer; 310, floating body assembly; 311, support column; 312, floating drum; 400, buffer assembly; 410, fixed sleeve; 411, opening; 412, flange edge; 420, support rod; 421, I-shaped section; 4211, vertical rod; 4212, upper horizontal plate; 4213, lower horizontal plate; 430, buffer mechanism; 431, first pneumatic sleeve; 432, second pneumatic sleeve; 433, winding coil; 434, first elastic buffer element; 435, magnetorheological fluid; 436, intermediate fixed section; 4361, annular groove; 437, first flexible section; 438, second flexible section; 439, second elastic buffer element; 4310, intermediate section; 4311, first section; 4312, second section; 440, flexible seal; 500, damping reduction mechanism; 510, sinking chamber; 520, counterweight; 530, elastic telescopic member; 531, outer rod; 532, inner rod; 533, telescopic spring; 540, steel cable. Detailed implementation manners

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, or a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] Referring to Figures 1 to 11 , in this embodiment, an offshore floating platform is proposed, which includes a main structure layer 100, a building module layer 200 and a floating body layer 300.

[0024] The main structure layer 100 includes a fixed truss 110 and a central frame 120. A hollow part 111 is formed through the upper and lower parts at the center of the fixed truss 110. The central frame 120 is installed inside the hollow part 111, and a plurality of buffer components 400 are arranged circumferentially on the central frame 120.

[0025] The building module layer 200 is installed on the upper part of the main structure layer 100, specifically above the central frame 120 and the buffer components 400, and is fixedly installed. The building module layer 200 can provide a leisure and rest destination for practitioners, or be further developed into an offshore resort or a hydrophilic tourism and rest gathering place.

[0026] The floating body layer 300 includes a plurality of floating body components 310 uniformly installed on the lower part of the fixed truss 110. The floating body layer 300 is used to generate buoyancy so that the overall offshore floating platform in this embodiment can float on the sea.

[0027] As Figure 7 shown, the buffer component 400 includes a fixed sleeve 410, a support rod 420, and a buffer mechanism 430. The central frame 120 is provided with mounting holes 121 corresponding one by one to the plurality of buffer components 400. The fixed sleeve 410 is vertically inserted into the mounting hole 121 and fixed to the central frame 120 through its upper end, so that the upper part of the fixed sleeve 410 is exposed above the central frame 120. The lower end of the fixed sleeve 410 is closed, and an opening 411 is formed at the upper end. The support rod 420 is a T-shaped rod, vertically inserted into the fixed sleeve 410 through the opening 411 of the fixed sleeve 410 and can slide up and down along the axial direction of the fixed sleeve 410. The upper end of the support rod 420 is located above the fixed sleeve 410. The building module layer 200 is fixedly connected to the upper end of the support rod 420. The part of the support rod 420 located inside the fixed sleeve 410 forms an I-shaped section 421. The I-shaped section 421 includes a vertical rod 4211, an upper horizontal plate 4212, and a lower horizontal plate 4213.

[0028] The buffer mechanism 430 is arranged inside the fixed sleeve 410 and includes a collar, a first pneumatic sleeve 431, a second pneumatic sleeve 432, a winding coil 433, and a first elastic buffer element 434. The collar is sleeved on the vertical rod 4211 of the I-shaped section 421 and there is a flow gap between the collar and the vertical rod 4211. The flow gap is filled with magnetorheological fluid 435.

[0029] The collar includes a middle fixed section 436 fixedly arranged, a first flexible section 437 connected between the upper horizontal plate 4212 of the I-shaped section 421 and the upper end of the middle fixed section 436, and a second flexible section 438 connected between the lower horizontal plate 4213 of the I-shaped section 421 and the lower end of the middle fixed section 436.

[0030] The first pneumatic sleeve 431 is connected between the upper horizontal plate 4212 of the I-shaped section 421 and the upper end of the intermediate fixed section 436 and is located outside the first flexible section 437. A first high-pressure air pump (not shown) is externally connected to the first pneumatic sleeve 431; the second pneumatic sleeve 432 is connected between the lower horizontal plate 4213 of the I-shaped section 421 and the lower end of the intermediate fixed section 436 and is located outside the second flexible section 438. A second high-pressure air pump (not shown) is externally connected to the second pneumatic sleeve 432.

[0031] The winding coil 433 is wound around the outer wall of the intermediate fixed section 436, and the viscosity of the magnetorheological fluid 435 is adjusted by changing the current passing through the coil; the first elastic buffer element 434 is provided between the lower horizontal plate 4213 of the I-shaped section 421 and the lower end of the fixed sleeve 410 to buffer the downward movement of the support rod 420.

[0032] Specifically, a flange 412 is formed on the outer periphery of the upper end of the fixed sleeve 410, and the fixed sleeve 410 is fixed to the central frame 120 by a plurality of screws evenly distributed on the flange 412; the inner diameter of the opening 411 of the fixed sleeve 410 should satisfy that the support rod 420 can move up and down, but the inner diameter of the opening 411 should not be too large to minimize the gap width between it and the support rod 420 and ensure sealing. To further ensure the sealing performance of the fixed sleeve 410, a flexible seal 440 (such as a sealing rubber) is provided above the fixed sleeve 410. The upper end of the flexible seal 440 is fixedly sealed and connected to the part of the support rod 420 located outside the fixed sleeve 410, and the lower end is fixedly sealed and connected to the upper end of the fixed sleeve 410 to seal the gap between the support rod 420 and the upper end opening 411 of the fixed sleeve 410, and the flexible seal 440 can deform in the vertical direction to always ensure sealing when moving up and down with the support rod 420.

[0033] The collar is integrally cylindrical and penetrates up and down. The intermediate fixed section 436 is made of a hard material and is not easily deformed. The first flexible section 437 and the second flexible section 438 are made of a deformable material, such as rubber, and can be stretched or compressed in the vertical direction under the driving of the up and down movement of the support rod 420. The upper end face of the first flexible section 437 can be adhesively bonded to the bottom surface of the upper horizontal plate 4212 of the I-shaped section 421, and the lower end face of the first flexible section 437 can be adhesively bonded to the upper end face of the intermediate fixed section 436; the upper end face of the second flexible section 438 can be adhesively bonded to the lower end face of the intermediate fixed section 436, and the lower end face of the second flexible section 438 can be adhesively bonded to the top surface of the lower horizontal plate 4213 of the I-shaped section 421. The adhesive part should ensure sealing, so as to seal the flow gap and prevent the magnetorheological fluid 435 from leaking out.

[0034] The first pneumatic sleeve 431 and the second pneumatic sleeve 432 are vertically arranged tubes and are flexible structures (such as rubber tubes) that can be telescoped in the vertical direction. The inner space of the tube is an air inflation chamber. The first high-pressure air pump and the second high-pressure air pump can respectively extract air or inject air into the first pneumatic sleeve 431 and the second pneumatic sleeve 432 to change the air pressure inside the tube.

[0035] The winding coil 433 is connected to an external power source. When the winding coil 433 is energized, a magnetic field is formed, making the magnetorheological fluid 435 a Bingham fluid with high viscosity and low fluidity. By changing the magnitude of the energizing current, and thus changing the magnetic field strength, the viscosity of the magnetorheological fluid 435 can be changed. When the power supply to the winding coil 433 is cut off, the magnetic field disappears, and the magnetorheological fluid 435 can return to a fluid with low viscosity and good fluidity, thereby realizing the active damping adjustment of the magnetorheological fluid 435.

[0036] Specifically, corresponding openings are provided on the fixed sleeve 410 to facilitate the external connection of the first pneumatic sleeve 431 and the second pneumatic sleeve 432 to the first high-pressure air pump and the second high-pressure air pump, and the external connection of the winding coil 433 to the power source. The openings are sealed to ensure the sealing performance of the fixed sleeve 410.

[0037] In the offshore floating platform of this embodiment, since the central frame 120 is located at the center of the main structure layer 100, the center of gravity of the building module layer 200 can be maintained as close as possible to the upper center position of the main structure layer 100, improving the stability of the upper building module layer 200 and avoiding the phenomenon of tipping over in the case of typhoons or strong waves. At the same time, the buffer assembly 400 can isolate vibration and buffer the building module layer 200, absorb and weaken the periodic shaking energy caused by tides or waves, reduce the rigid collision between the main structure layer 100 and the building module layer 200, and avoid structural fatigue damage. Further, a plurality of buffer assemblies 400 are evenly distributed in the circumferential direction of the central frame 120, so that the vertical undulation caused by tides or waves can be evenly dispersed through the evenly distributed plurality of buffer assemblies 400, avoiding concentrated stress at the bottom of the building module layer 200, reducing the shaking amplitude of the building module layer 200, and improving safety, stability and comfort.

[0038] The buffer principle of the buffer assembly 400 will be described in detail below: When the sea surface generates a vertically upward bulge under the action of tides or waves, in order to reduce the upward sway amplitude of the upper building module layer 200, the second high-pressure air pump injects air into the second pneumatic sleeve 432, and the first high-pressure air pump extracts air from the first pneumatic sleeve 431, increasing the air pressure in the second pneumatic sleeve 432 and decreasing the air pressure in the first pneumatic sleeve 431. At the same time, the winding coil 433 is de-energized, and the magnetorheological fluid 435 has good fluidity. Furthermore, the support rod 420 will actively move downward, and the magnetorheological fluid 435 is extruded by the upper horizontal plate 4212 of the I-shaped section 421 and flows downward inside the flow gap; when the height of the active descent of the support rod 420 is close to the vertically upward bulge generated by the action of tides or waves, the winding coil 433 is quickly energized to generate a magnetic field, making the magnetorheological fluid 435 become viscous, increasing the resistance to the descent of the support rod 420, so that the support rod 420 can stop descending, and further ensuring that the building module layer 200 is in a stable state; When the sea surface returns to its original position after the vertically upward bulge caused by tides or waves subsides, in order to reduce the downward sway amplitude of the building module layer 200, at this time, the first high-pressure air pump injects air into the first pneumatic sleeve 431, and the second high-pressure air pump extracts air from the second pneumatic sleeve 432. The winding coil 433 stops being energized, the magnetorheological fluid 435 resumes flowing, and the support rod 420 moves upward to compensate for the downward movement of the building module layer 200.

[0039] Then, through the coordinated action of the first high-pressure air pump and the second high-pressure air pump to control the air extraction and injection of the first pneumatic sleeve 431 and the second pneumatic sleeve 432 respectively, and by changing the energizing current of the winding coil 433 to adjust the viscosity of the magnetorheological fluid 435, the support rod 420 can actively move up and down to cancel out as much as possible the vertical undulations generated by tides or waves. Thus, it can ensure that the building module layer 200 can always be in a relatively stable state, buffer the vertical vibration of the offshore floating platform, greatly reduce the vertical vibration amplitude of the offshore floating platform, ensure the stability and safety of the building module layer 200, and reduce the difficulty of offshore operations.

[0040] In some embodiments, the buffer mechanism 430 further includes a second elastic buffer element 439, and the second elastic buffer element 439 is arranged between the upper horizontal plate 4212 of the I-shaped section 421 and the upper end of the fixed sleeve 410. The second elastic buffer element 439 can buffer the upward movement of the support rod 420 to weaken its upward impact energy, and can also prevent the flexible seal 440 above the fixed sleeve 410 from being damaged due to excessive upward movement amplitude of the support rod 420, affecting the sealing reliability.

[0041] Specifically, the first elastic buffer element 434 and the second elastic buffer element 439 can be selected as springs. The first elastic buffer element 434 is clamped between the lower horizontal plate 4213 of the I-shaped section 421 and the bottom plate of the fixed sleeve 410. The second spring buffer element is sleeved on the support rod 420 and is located above the upper horizontal plate 4212 of the I-shaped section 421, and is clamped between the upper horizontal plate 4212 of the I-shaped section 421 and the upper end plate of the bottom plate of the fixed sleeve 410. And when there is no vertical undulation caused by tides or waves, both the first elastic buffer element 434 and the second elastic buffer element 439 are in a compressed state to ensure that the central position of the I-shaped section 421 of the support rod 420 can be stably at the center of the fixed sleeve.

[0042] For ease of description, the flow gap is divided into an intermediate section 4310 corresponding to the intermediate fixed section 436, a first section 4311 corresponding to the first flexible section 437, and a second section 4312 corresponding to the second flexible section 438. The inner diameter of the intermediate section 4310 is smaller than that of the first section 4311 and also smaller than that of the second section 4312. And the connection end between the intermediate section 4310 and the first section 4311 is in a flared shape, and the connection end between the intermediate section 4310 and the second section 4312 is in a flared shape, making the intermediate section 4310 in a necked shape with larger inner diameters at both ends and a smaller inner diameter in the middle, and the overall flow gap is also in a necked shape with larger diameters at both ends and a smaller inner diameter in the middle, so that the magnetorheological fluid 435 can flow smoothly when the support rod 420 moves up and down and squeezes the magnetorheological fluid 435.

[0043] Specifically, chamfers are machined at both ends of the inner wall of the intermediate section 4310 so that the connection end between the intermediate section 4310 and the first section 4311 is in a flared shape and the connection end between the intermediate section 4310 and the second section 4312 is in a flared shape.

[0044] In some embodiments, in the non-loaded state, the first flexible section 437 and the second flexible section 438 are symmetric, and the first pneumatic sleeve 431 and the second pneumatic sleeve 432 are symmetric, which is convenient for processing and assembly.

[0045] In some embodiments, a plurality of first pneumatic sleeves 431 are circumferentially distributed uniformly, and a plurality of second pneumatic sleeves 432 are circumferentially distributed uniformly, so as to make the acting force on the I-shaped section 421 of the support rod 420 uniform and ensure the smooth up and down movement of the support rod 420.

[0046] In some embodiments, the outer circumferential wall of the intermediate fixed section 436 is fitted and fixedly connected to the inner wall of the fixed sleeve 410, and an annular groove 4361 is formed on the outer circumferential wall of the intermediate fixed section 436, and the winding coil 433 is arranged in the annular groove 4361, so as to further enable the winding coil 433 to be in a space with reliable sealing and ensure the working reliability.

[0047] Due to the complex marine environment, in addition to the vertical sway caused by tides or wave vertical undulations, the offshore floating platform in this embodiment may also be swayed horizontally by wind or lateral wave impacts. To effectively reduce the horizontal sway amplitude of the offshore floating platform and further improve the platform's stability and safety, in some embodiments, a damping reduction mechanism 500 is installed at the center of the building module layer 200. The damping reduction mechanism 500 includes a sinking chamber 510, a counterweight 520, and an elastic telescopic member 530. The sinking chamber 510 is formed below the building module layer 200. The counterweight 520 is located within the sinking chamber 510. The upper end of the counterweight 520 is suspended and connected to the upper end of the building module layer 200 by a steel cable 540. A plurality of the elastic telescopic members 530 are arranged circumferentially between the lower end of the counterweight 520 and the sinking chamber 510. One end of the elastic telescopic member 530 is hinged to the counterweight 520, and the other end is hinged to the circumferential side wall of the sinking chamber 510, that is, the counterweight 520 is in a suspended state.

[0048] When the building module layer 200 is horizontally impacted by wind or lateral waves and generates horizontal sway, the counterweight 520 will swing in the opposite direction through the telescopic member. The telescopic member restricts the displacement amplitude of the counterweight 520 and avoids collision with the sinking chamber 510, forming a reverse inertial force to balance the vibration, thereby weakening or even canceling the vibration as much as possible, effectively reducing the horizontal sway amplitude of the offshore floating platform, and significantly improving the living comfort and offshore operation comfort.

[0049] Specifically, as Figure 3 shown, a through hole 211 is provided at the bottom center of the building module layer 200. The sinking chamber 510 is arranged below the through hole 211. The sinking chamber 510 is surrounded by a circumferential side wall and a bottom wall and encloses the through hole 211 at the bottom of the building module layer 200.

[0050] As Figure 3 、 Figure 8 、 Figure 10 and Figure 11 shown, the elastic telescopic member 530 includes a telescopic sleeve rod and a telescopic spring 533. The telescopic sleeve rod includes an outer rod 531 and an inner rod 532 that are telescopically sleeved. One end of the outer rod 531 is hinged to the circumferential side wall of the sinking chamber 510, and the other end is sleeved with the inner rod 532. The inner rod 532 and the outer rod 531 can relatively telescopically slide. The exposed end of the inner rod 532 (i.e., the end exposed outside the outer rod 531) is hinged to the counterweight 520. The telescopic spring 533 is sleeved on the exposed part of the inner rod 532. One end of it abuts against the end face of the outer rod 531, and the other end abuts against the exposed end of the inner rod 532.

[0051] The telescopic sleeve rod and the telescopic spring 533 work together to further restrict the displacement amplitude of the counterweight 520.

[0052] In some embodiments, asFigure 1 , Figure 3 , Figure 9 and Figure 10 As shown in Figure 1 , Figure 3 , Figure 9 and Figure 10 , the building module layer 200 includes a supporting plate 210, a tower 220 and a container 230. The supporting plate 210 serves as the bottom plate of the building module layer 200. The through holes 211 at the bottom of the building module layer 200 are provided on the supporting plate 210. The upper ends of the support rods 420 of each buffer assembly 400 are fixedly connected to the supporting plate 210. The tower 220 is installed on the supporting plate 210 and located in the middle of the supporting plate 210. The containers 230 are evenly installed on the periphery of the tower 220 and are symmetrically arranged about the central axis of the tower 220.

[0053] The sinking chamber 510 is located below the tower 220. The steel cable 540 of the counterweight 520 is located on the central axis of the tower 220, passes through the tower 220 and is fixedly connected to the upper end of the tower 220. The counterweight 520 is linked with the tower 220 through the steel cable 540. The containers 230 are evenly installed on the outside of the tower 220, and the containers 230 are symmetrically arranged about the axis where the center of the tower 220 is located. Then, the damping reduction mechanism 500 combines with the central symmetry layout of the tower 220 to further effectively reduce the sway amplitude of the container 230 in the horizontal direction, and significantly improve the living and working comfort.

[0054] Among them, the container 230 is a prefabricated building structure and is detachably installed on the supporting plate 210. The supporting plate 210 is a reinforced concrete integral casting plate, which can meet the use requirements of large spans.

[0055] In some embodiments, as Figures 1 to 4 shown, a connecting frame 130 is provided between the fixed truss 110 and the central frame 120. The connecting frame 130 is fixedly connected to the central frame 120 and also fixedly connected to the fixed truss 110. The connecting frame 130 is composed of a plurality of transverse beams and a plurality of longitudinal beams connected to form a grid shape. A photovoltaic power generation module is detachably installed in each grid. The photovoltaic power generation module can convert solar energy into electric energy, increasing the power generation effect of the offshore floating platform and improving the utilization rate of clean energy. A plurality of wave energy power generation modules are arranged at the lower part of the fixed truss 110. The wave energy power generation modules can convert wave energy into electric energy, further making full use of ocean resources for power generation, realizing multi-energy complementarity, and improving the development and utilization efficiency of offshore energy.

[0056] Specifically, the grid can be rectangular and can be evenly distributed. An installation plate 140 is detachably paved in each grid of the connecting frame 130, and the photovoltaic power generation module is correspondingly installed on the installation plate 140.

[0057] In some embodiments, as Figure 1 , Figure 3 and Figure 8As shown, support members 150 are evenly installed between the lower end of the inner side of the fixed truss 110 and the central frame 120. The central frame 120 is a rectangular frame structure with an L-shaped cross-section, and a protective fence 160 is also installed at the upper end of the fixed truss 110.

[0058] The fixed truss 110 is composed of a crisscross beam system and has a strong load-bearing capacity. Support members 150 are evenly arranged between the fixed truss 110 and the central frame 120. The support members 150 can not only improve the rigidity of the fixed truss 110 and the central frame 120, but also support and hold the building module layer 200 on the central frame 120, improving the load-bearing capacity of the central frame 120.

[0059] As Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 8 shown, as an implementation manner, the support members 150 are arranged in an inclined structure and include two forms: end support members 151 and intermediate support members 152. The end support members 151 include two inclined rods, and their tops are connected together to make the end support members 151 angular. They are installed at the gap between the diagonal corners of the fixed truss 110 and the central frame 120. Their tops are fixedly connected to the central frame 120 by screws, and the bottoms of the two inclined rods are respectively fixedly connected to the fixed truss 110 on both sides of the diagonal by screws; the intermediate support members 152 are single inclined rods and are installed by screws at the gap between the side surfaces of the fixed truss 110 and the central frame 120.

[0060] The end support members 151 and the intermediate support members 152 are made of corrosion-resistant stainless steel. The end support members 151 and the intermediate support members 152 are the main components for energy dissipation and shock absorption. They first bear and consume energy and can be replaced if the deformation is too large. To a certain extent, they have good economic benefits and safety.

[0061] In some embodiments, the floating body assembly 310 includes columns 311 and floating barrels 312. Columns 311 are evenly installed at the lower end of the main structure layer 100, and floating barrels 312 are installed at the lower ends of the columns 311.

[0062] The floating barrels 312 can drive the main structure layer 100 and the building module layer 200 to float on the sea surface. The air pressure inside the floating barrels 312 is adjustable, so that the height of the main structure layer 100 floating on the sea can be adjusted, and thus different sea conditions can be adapted, such as increasing the buoyancy before a typhoon to enhance the wave resistance ability.

[0063] In the embodiment of the present invention, when the offshore floating platform is in use, the specific implementation is as follows: S1. Floating and foundation stability: The floating body assembly 310 provides buoyancy through the struts 311 and the pontoons 312, enabling the main structure layer 100 to float stably on the sea surface; the internal air pressure of the pontoons 312 is adjustable, and the draft of the system is adjusted by inflating and deflating to adapt to different sea conditions, such as increasing buoyancy before a typhoon to enhance the wave resistance ability; the truss structure of the main structure layer 100 forms a high-strength skeleton, and the support members 150 enhance the overall rigidity through the inclined end support members 151 and the intermediate support members 152, dispersing the impact force of the waves; S2. Vertical buffering and energy absorption: When the main structure layer 100 vertically undulates due to waves or tides, the buffering assembly 400 operates: Active damping adjustment: When the waves or tides push the central frame 120 upward, the second high-pressure air pump injects air into the second pneumatic sleeve 432, and the first high-pressure air pump sucks air from the first pneumatic sleeve 431, driving the support rod 420 to move downward. The magnetorheological fluid 435 in the first flexible section 437 flows through the intermediate fixed section 436 into the second flexible section 438. The winding coil 433 is energized to generate a magnetic field, and the viscosity of the magnetorheological fluid 435 suddenly increases, locking the position of the I-shaped section 421 and offsetting the vertical upward displacement of the platform; Reverse reset control: When the waves fall back, the high-pressure air pump operates in reverse (injecting air into the first pneumatic sleeve 431 and sucking air from the second pneumatic sleeve 432), the support rod 420 moves upward, and the first elastic buffer element 434 assists the support rod 420 to reset, preventing the building module layer 200 from falling due to inertia. The winding coil 433 is powered off, the magnetic field disappears, the magnetorheological fluid 435 resumes fluidity, the movement resistance of the support rod 420 decreases, and the main structure layer 100 quickly returns to its original position; S3. Horizontal vibration suppression and counterweight balance: When the building module layer 200 is affected by wind or lateral waves, the damping reduction mechanism 500 operates. When the container 230 shakes horizontally under the action of wind, the counterweight 520 is linked with the tower 220 through the steel cable 540 and swings in the opposite direction under the action of the elastic telescopic member 530. The telescopic sleeve rod and the telescopic spring 533 cooperate to limit the displacement amplitude of the counterweight 520, avoiding collision with the sinking chamber 510, forming a reverse inertial force to balance the vibration. The tower 220 serves as the central axis of symmetry, restricting the layout of the container 230 and reducing the risk of center of gravity offset, enhancing the anti-overturning ability; S4. Multi-energy complementarity and resource utilization: The photovoltaic power generation module uses the sufficient sunlight at sea for power generation, and the electric energy is stored in the platform energy storage system. The wave energy power generation module converts the mechanical energy of the floating body layer 300 fluctuating with the waves into electric energy. The photovoltaic power generation device and the wave energy power generation module supply power complementarily, and the load distribution is adjusted through the intelligent controller to ensure stable energy supply under extreme weather conditions; S5. Dynamic adjustment and maintenance guarantee Adjust the air pressure of the buoy 312 according to real-time sea conditions such as wave height and wind speed to control the floating height of the platform; synchronously adjust the current intensity of the winding coil 433 of the buffer assembly 400 to dynamically match the damping requirements; the support member 150 and the buffer assembly 400 can be detachably installed and can be replaced separately when damaged without overall hoisting.

[0064] In some embodiments, a modular multi-functional offshore floating platform system is also proposed, which includes a plurality of offshore floating platforms. The plurality of offshore floating platforms are spliced and anchored in an array to form a whole. For the specific structure of the offshore floating platform, refer to the embodiments of the offshore floating platform of the present invention and the attached Figures 1 to 11 description, which will not be elaborated here.

[0065] The outer contour of the main structure layer 100 of the offshore floating platform can be a regular polygon, such as an equilateral triangle, a square, a regular hexagon, etc., or it can be a rectangle, without specific restrictions, as long as it can be spliced in an array.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An offshore floating platform, characterized in that, Comprising: A main structure layer, including a fixed truss and an annular central frame. A hollow part is formed through the center of the fixed truss in the vertical direction. The central frame is installed inside the hollow part, and a plurality of buffer components are arranged circumferentially on the central frame; A building module layer, which is installed above the central frame and the buffer components; A floating body layer, which includes floating body components uniformly installed at the lower part of the fixed truss for providing buoyancy; The buffer component includes a fixed sleeve, a support rod, and a buffer mechanism; the fixed sleeve is fixed to the central frame, with its lower end closed and an opening formed at the upper end; the support rod is inserted into the fixed sleeve and can slide up and down along the axial direction of the fixed sleeve. The building module layer is fixedly connected to the upper end of the support rod, and the part of the support rod located inside the fixed sleeve forms an I-shaped section; The buffer mechanism is arranged inside the fixed sleeve and includes a collar, a first pneumatic sleeve, a second pneumatic sleeve, a winding coil, and a first elastic buffer element; the collar is sleeved on the vertical rod of the I-shaped section and there is a flow gap between it and the vertical rod. The flow gap is filled with magnetorheological fluid; the collar includes a fixed middle section, a first flexible section connected between the upper horizontal plate of the I-shaped section and the upper end of the middle section, and a second flexible section connected between the lower horizontal plate of the I-shaped section and the lower end of the middle section; the first pneumatic sleeve is connected between the upper horizontal plate of the I-shaped section and the upper end of the middle section and is located outside the first flexible section. The first pneumatic sleeve is externally connected to a first high-pressure air pump; the second pneumatic sleeve is connected between the lower horizontal plate of the I-shaped section and the lower end of the middle section and is located outside the second flexible section. The second pneumatic sleeve is externally connected to a second high-pressure air pump; the winding coil is wound around the outer wall of the middle section, and the viscosity of the magnetorheological fluid is adjusted by changing the current passing through the coil; the first elastic buffer element is arranged between the lower horizontal plate of the I-shaped section and the lower end of the fixed sleeve.

2. The offshore floating platform according to claim 1, characterized in that The buffer mechanism further includes a second elastic buffer element, which is arranged between the upper horizontal plate of the I-shaped section and the upper end of the fixed sleeve.

3. The offshore floating platform according to claim 1, characterized in that The flow gap is divided into a middle section corresponding to the middle section, a first section corresponding to the first flexible section, and a second section corresponding to the second flexible section; the inner diameter of the middle section is smaller than that of the first section and also smaller than that of the second section, and the connection end between the middle section and the first section is in a flared shape, and the connection end between the middle section and the second section is in a flared shape.

4. The offshore floating platform according to claim 1, characterized in that A plurality of the first pneumatic sleeves are circumferentially arranged uniformly, and a plurality of the second pneumatic sleeves are circumferentially arranged uniformly.

5. The offshore floating platform according to claim 1, characterized in that The outer circumferential wall of the middle fixing section is fitted and fixedly connected to the inner wall of the fixing sleeve, and an annular groove is formed on the outer circumferential wall of the middle fixing section, and the winding coil is arranged in the annular groove.

6. The offshore floating platform according to claim 1, wherein a flexible seal is provided above the fixing sleeve, the upper end of the flexible seal is hermetically and fixedly connected to the part of the support rod outside the fixing sleeve, and the lower end is hermetically and fixedly connected to the upper end of the fixing sleeve to seal the gap between the support rod and the upper opening of the fixing sleeve.

7. The offshore floating platform according to claim 1, wherein a damping reduction mechanism is installed at the center of the building module layer, the damping reduction mechanism includes a sinking chamber, a counterweight and an elastic telescopic member, the sinking chamber is formed below the bottom plate of the building module layer, the counterweight is located in the sinking chamber, the upper end of the counterweight is suspended and connected to the upper end of the building module layer by a steel cable, and the elastic telescopic members are evenly arranged circumferentially between the lower end of the counterweight and the sinking chamber, one end of the elastic telescopic member is hinged to the counterweight, and the other end is hinged to the circumferential side wall of the sinking chamber.

8. The offshore floating platform according to claim 7, wherein the elastic telescopic member includes a telescopic sleeve rod and a telescopic spring, the telescopic sleeve rod includes an outer rod and an inner rod that are telescopically sleeved, one end of the outer rod is hinged to the circumferential side wall of the sinking chamber, the other end is sleeved with the inner rod, the exposed end of the inner rod is hinged to the counterweight, and the telescopic spring is sleeved on the exposed part of the inner rod.

9. The offshore floating platform according to claim 1, wherein a connecting frame is provided between the fixed truss and the central frame, the connecting frame is fixedly connected to the central frame and the fixed truss, the connecting frame is formed by connecting a plurality of transverse beams and a plurality of longitudinal beams into a grid shape, and a photovoltaic power generation module is detachably installed in each grid; a plurality of wave energy power generation modules are arranged at the lower part of the fixed truss.

10. A modular multi-functional offshore floating platform system, characterized in that it includes a plurality of offshore floating platforms according to any one of claims 1 to 9, and the plurality of offshore floating platforms are spliced in an array.

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