A wind turbine installation platform

Abstract

The application belongs to the technical field of wind power, and specifically discloses a wind turbine installation platform, which comprises a table top and a plurality of vertical beams, and further comprises a plurality of deformation units, and the upper end of each vertical beam is provided with a deformation unit. The deformation unit comprises a hydraulic cylinder and a hydraulic piston, the hydraulic cylinder is fixedly connected with the table top, an elastic component is arranged between the upper end of the hydraulic piston and the hydraulic cylinder, and the lower end of the hydraulic piston penetrates through the hydraulic cylinder and is fixedly connected with the vertical beam. The upper half area of the hydraulic piston of each deformation unit is communicated with the lower half area of the hydraulic piston of the adjacent deformation unit through a pipeline. The hydraulic cylinder and the pipeline are filled with liquid. When a certain area of the table top is deformed, the adjacent area will also be deformed in the same direction to a certain extent, so that gradient deformation is formed, the damage and instability of the structure caused by excessive local deformation can be avoided. Moreover, the pressure load can be dispersed, the excessive local stress can be relieved, and the risk of settlement of individual vertical beams caused by stress concentration can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of wind power technology, and specifically relates to a wind turbine installation platform. Background Technology

[0002] Currently, the design and construction of offshore wind turbine installation platforms face challenges in vibration reduction and pressure distribution, as well as the issue of vertical beam settlement on the seabed. Due to the presence of large components in the wind turbine, certain areas of the platform may experience greater pressure and load. This pressure concentration can cause excessive forces on the vertical beams in those areas, increasing the risk of structural damage and instability. Furthermore, the unevenness and unpredictability of seabed conditions, along with the weight of the vertical beams themselves, can lead to platform settlement on the seabed. Settlement may result in the vertical beams bearing even greater pressure and load, posing risks to the platform's stability and structural safety. Summary of the Invention

[0003] To address the aforementioned shortcomings, the present invention aims to provide a wind turbine installation platform in which, when a certain area of ​​the platform deforms, adjacent areas also undergo deformation in the same direction to a certain extent, thus forming a gradient deformation. This avoids structural damage and instability caused by excessive local deformation. Furthermore, it can distribute pressure loads, alleviate excessive local stress, and reduce the risk of settlement of individual vertical beams due to concentrated stress.

[0004] To achieve the above objectives, this invention provides a wind turbine installation platform, including a platform and multiple vertical beams distributed below the platform. It also includes multiple deformation units, with one deformation unit located at the upper end of each vertical beam. Each deformation unit includes a hydraulic cylinder and a hydraulic piston that is sealed and slidably mounted within the hydraulic cylinder. The hydraulic cylinder is fixedly connected to the platform, and an elastic component is provided between the upper end of the hydraulic piston and the hydraulic cylinder. The lower end of the hydraulic piston passes through the hydraulic cylinder and is fixedly connected to the vertical beam. The hydraulic piston divides the space within the hydraulic cylinder into an upper and lower section. The upper section of the hydraulic cylinder of each deformation unit is connected to the lower section of the hydraulic cylinder of the adjacent deformation unit via a pipe. The hydraulic cylinder and pipes are filled with liquid.

[0005] Furthermore, a differential pressure valve is installed on each pipeline.

[0006] Furthermore, the upper and lower halves of the hydraulic cylinder have the same effective volume per unit height.

[0007] Furthermore, the hydraulic piston includes a piston head and a piston rod. The piston head is in sealed sliding contact with the hydraulic cylinder. One end of the piston rod is fixed to the piston head, and the other end extends downward through the bottom of the hydraulic cylinder. At least one sliding rod extends downward from the upper end of the hydraulic cylinder. A sliding groove is formed extending downward from the upper surface of the piston head, and the sliding groove is in sealed sliding contact with the sliding rod. A vent is formed through the sliding rod at both ends, connecting the internal space of the sliding groove to the outside. The sum of the horizontal cross-sectional areas of the sliding rods is equal to the horizontal cross-sectional area of ​​the hydraulic piston rod.

[0008] Furthermore, an energy storage device is installed on at least one of the two pipes between two adjacent deformation units.

[0009] Furthermore, the vertical beam includes a vertical beam body and a rubber pad assembly. The rubber pad assembly includes a column, a rubber pad, an upper top plate, and fixing nails. The lower end of the column is fixedly connected to the middle of the upper end of the vertical beam body. A through hole is opened in the middle of the rubber pad, and the rubber pad is fitted around the outer perimeter of the column. The upper top plate is located above the rubber pad, and its upper surface is fixedly connected to a hydraulic piston. The fixing nails are fixed to the upper top plate and penetrate downwards through the rubber pad. A gap is left between the lower end of the fixing nail and the vertical beam body, and a gap is left between the upper end of the column and the upper top plate.

[0010] Furthermore, each rubber pad assembly contains multiple rubber pads, which are sequentially fitted around the periphery of the column.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In this invention, when a certain area of ​​the platform deforms, adjacent areas will also undergo a certain degree of deformation in the same direction, thus forming a gradient deformation. This can prevent excessive local deformation from causing structural damage and instability. Moreover, it can also distribute the pressure load, alleviate excessive local stress, and reduce the risk of settlement of individual vertical beams due to stress concentration.

[0013] 2. This invention utilizes a differential pressure valve. When the pressure load on the platform or vertical beam is small, the pressure difference across the valve is small, and the valve remains closed. Liquid does not flow between the deformation units, and therefore the deformation units do not deform, keeping the platform stable and preventing unnecessary shaking. However, when a local area of ​​the platform or a vertical beam faces a strong pressure load, the hydraulic pressure within the corresponding deformation unit changes drastically. The pressure difference across the valve reaches a set value, causing the valve to open. This allows the hydraulic cylinder of that deformation unit to exchange fluid with adjacent cylinders, sharing the pressure load and generating gradient deformation. The differential pressure valve then closes again, preventing fluid exchange. Hydraulic pressure continues to act on adjacent deformation units, maintaining the deformation gradient and pressure sharing until the high-pressure load disappears. Under the force of the large rebound, the differential pressure valve reopens, allowing fluid to flow back. The valve then closes again, and the platform returns to a stable state. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the wind turbine installation platform of the present invention;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a three-dimensional structural diagram of the deformation unit of the present invention.

[0017] In the diagram: 100-Tabletop, 200-Vertical beam, 210-Vertical beam body, 220-Rubber pad assembly, 221-Column, 222-Rubber pad, 223-Top plate, 224-Fixing nail, 300-Deformation unit, 310-Hydraulic cylinder, 311-Sliding rod, 320-Hydraulic piston, 321-Piston head, 322-Piston rod, 323-Sliding groove, 324-Ventilation port, 330-Elastic component, 340-Upper half zone, 350-Lower half zone, 400-Pipeline, 410-Differential pressure valve, 420-Accumulator. Detailed Implementation

[0018] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms “set up”, “connected”, and “linked” should be interpreted broadly.

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] Reference Figure 1 and Figure 2This embodiment discloses a wind turbine installation platform, including a platform 100 and multiple vertical beams 200. The vertical beams 200 are distributed below the platform 100. It also includes multiple deformation units 300, with one deformation unit 300 disposed at the upper end of each vertical beam 200. Each deformation unit 300 includes a hydraulic cylinder 310 and a hydraulic piston 320 that is slidably and sealed within the hydraulic cylinder 310. The hydraulic cylinder 310 is fixedly connected to the platform 100. An elastic component 330, such as a spring, is disposed between the upper end of the hydraulic piston 320 and the hydraulic cylinder 310. The lower end of the hydraulic piston 320 passes through the hydraulic cylinder 310 and is fixedly connected to the vertical beams 200. The hydraulic piston 320 divides the space within the hydraulic cylinder 310 into an upper half 340 and a lower half 350. The upper half 340 of the hydraulic cylinder 310 of each deformation unit 300 is connected to the lower half 350 of the hydraulic cylinder 310 of the adjacent deformation unit 300 via a pipe 400. The hydraulic cylinder 310 and the pipeline 400 are filled with liquid.

[0022] The principle of this embodiment is as follows:

[0023] When a localized area of ​​the platform 100 is subjected to concentrated pressure, the platform 100 undergoes concave deformation. This concave deformation causes the hydraulic cylinder 310 below that area to move downwards. The hydraulic cylinder 310 compresses the elastic component 330, which absorbs part of the pressure load and acts as a shock absorber. Simultaneously, the volume of the upper half 340 of the hydraulic cylinder 310 decreases, while the volume of the lower half 350 increases. The upper half 340 of the hydraulic cylinder 310 forces liquid into the lower half 350 of the adjacent hydraulic cylinder 310, while the lower half 350 draws liquid from the upper half 340 of the adjacent hydraulic cylinder 310. This causes the adjacent hydraulic cylinder 310 to move downwards relative to the hydraulic piston 320 under hydraulic pressure, causing the platform 100 in the adjacent area to also undergo concave deformation. In other words, when a certain area of ​​the platform 100 deforms, adjacent areas will also undergo a certain degree of deformation in the same direction, thus forming a gradient deformation. This helps to prevent excessive local deformation from causing structural damage and instability. Moreover, it can also distribute the pressure load, alleviate excessive local stress, and thus reduce the risk of individual vertical beams 200 settling due to concentrated stress.

[0024] In fact, the above process is most effective when facing sudden instantaneous pressure loads, while its effect weakens under continuous pressure loads. This is because the liquid transmitted to the adjacent hydraulic cylinder 310 will continue to be transmitted and dispersed to the hydraulic cylinder 310 further away. Eventually, through continuous exchange of liquid, the hydraulic pressure difference between the two sides of each hydraulic piston 320 gradually weakens or even disappears. The influence of the liquid on the hydraulic piston 320 weakens, and the center of gravity of the spring becomes dominant. This causes the deformation unit 300 adjacent to the deformation unit 300 that has undergone initial deformation to tend to return to its original shape under the action of the elastic component 330, and to compress the platform 100 and the vertical beam 200 again.

[0025] To address the aforementioned issues, a further solution in this embodiment is as follows: each pipe 400 is equipped with a differential pressure valve 410, which only opens when the pressure difference across both sides reaches a set value. Using this technical solution, when the pressure load on the platform 100 or the vertical beam 200 is small, the pressure difference across the differential pressure valve 410 is small, and the differential pressure valve 410 is in a closed state. Liquid does not flow between the deformation units 300, and therefore the deformation units 300 do not deform. At this time, the platform 100 is in a stable state, preventing unnecessary shaking. When a local area of ​​the platform 100 or a vertical beam 200 faces a strong pressure load, the hydraulic pressure in the corresponding deformation unit 300 changes drastically. The pressure difference across the differential valve 410 reaches the set value, and the differential valve 410 opens, allowing the hydraulic cylinder 310 of the deformation unit 300 to exchange fluid with the adjacent hydraulic cylinder 310, thereby sharing the pressure load and generating gradient deformation. Subsequently, the differential valve 410 closes again to prevent fluid exchange, and the hydraulic pressure continues to act on the adjacent deformation unit 300, maintaining the deformation gradient and pressure sharing until the high pressure load disappears. Under the action of a huge rebound force, the differential valve 410 opens again, the fluid flows back, and then the differential valve 410 closes, and the platform 100 returns to a stable state.

[0026] Further analysis shows that in the scheme of setting differential pressure valve 410, the effective volume per unit height of the upper half 340 and the lower half 350 of hydraulic cylinder 310 should be the same. This is so that the liquid output of hydraulic cylinder 310 and the total liquid input of adjacent hydraulic cylinders 310 can be balanced, and the liquid input of hydraulic cylinder 310 and the total liquid output of adjacent hydraulic cylinders 310 can also be balanced.

[0027] Specifically, there are many ways to achieve the above objective. One approach is to differentiate the internal shapes of the upper half (340) and lower half (350) of the hydraulic cylinder 310, thereby offsetting the space occupied by the hydraulic piston 320 rod in the lower half (350). Alternatively, a rod with the same cross-sectional area as the hydraulic piston 320 rod can be provided in the upper half (340), also penetrating the upper surface of the hydraulic cylinder 310. This embodiment provides a preferred solution: (Refer to...) Figure 3The hydraulic piston 320 includes a piston head 321 and a piston rod 322. The piston head 321 is in sealed sliding contact with the hydraulic cylinder 310. One end of the piston rod 322 is fixed to the piston head 321, and the other end extends downward through the bottom of the hydraulic cylinder 310. At least one sliding rod 311 extends downward from the upper end of the hydraulic cylinder 310. A sliding groove 323 extends downward from the upper surface of the piston head 321, and the sliding groove 323 is in sealed sliding contact with the sliding rod 311. A vent 324 extends vertically through the sliding rod 311, connecting the internal space of the sliding groove 323 to the outside. The sum of the horizontal cross-sectional areas of the sliding rods 311 is equal to the horizontal cross-sectional area of ​​the hydraulic piston 320 rod. By adopting the above technical solution, the effective volume per unit height of the upper half 340 and the lower half 350 of the hydraulic cylinder 310 can be the same. The elastic component 330 is always entirely located within the space of the upper half 340, and its volume does not change with the movement of the hydraulic piston 320, therefore no calculation is required.

[0028] As a further solution in this embodiment: Sometimes, due to reasons such as limited workmanship precision, the effective volume per unit height of the upper half 340 and the lower half 350 of the hydraulic cylinder 310 may inevitably have errors. In this case, an accumulator 420 can be installed on at least one of the two pipes 400 between two adjacent deformation units 300 to absorb small fluctuations in liquid volume.

[0029] As a further embodiment, the vertical beam 200 includes a vertical beam body 210 and a rubber pad assembly 220. The rubber pad assembly 220 includes a column 221, a rubber pad 222, an upper top plate 223, and a fixing nail 224. The lower end of the column 221 is fixedly connected to the middle of the upper end of the vertical beam body 210. A through hole is opened in the middle of the rubber pad 222, and the rubber pad 222 is sleeved on the periphery of the column 221. The upper top plate 223 is disposed above the rubber pad 222, and its upper surface is fixedly connected to the hydraulic piston 320. The fixing nail 224 is fixed to the upper top plate 223 and penetrates downward through the rubber pad 222. A gap is left between the lower end of the fixing nail 224 and the vertical beam body 210, and a gap is left between the upper end of the column 221 and the upper top plate 223. These gaps are the damping range of the rubber pad 222. The rubber pad 222 is a reserved space for the deformation of the deformation unit 300, avoiding hard compression deformation between structures when the deformation unit 300 expands or contracts. Preferably, each rubber pad assembly 220 contains multiple rubber pads 222, which are sequentially fitted around the column 221.

[0030] The above description only details the preferred embodiments of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wind turbine installation platform, comprising a platform (100) and a plurality of vertical beams (200), wherein the vertical beams (200) are distributed below the platform (100), characterized in that, It also includes multiple deformation units (300), with one deformation unit (300) provided at the upper end of each vertical beam (200); the deformation unit (300) includes a hydraulic cylinder (310) and a hydraulic piston (320) that is sealed and slidably installed in the hydraulic cylinder (310). The hydraulic cylinder (310) is fixedly connected to the platform (100), and an elastic component (330) is provided between the upper end of the hydraulic piston (320) and the hydraulic cylinder (310). The lower end of the hydraulic piston (320) passes through the platform. A hydraulic cylinder (310) is fixedly connected to the vertical beam (200); the hydraulic piston (320) divides the space inside the hydraulic cylinder (310) into an upper half (340) and a lower half (350); the upper half (340) of the hydraulic cylinder (310) of each deformation unit (300) is connected to the lower half (350) of the hydraulic cylinder (310) of the adjacent deformation unit (300) through a pipe (400); the hydraulic cylinder (310) and the pipe (400) are filled with liquid; The upper half (340) and the lower half (350) of the hydraulic cylinder (310) have the same effective volume per unit height; The hydraulic piston (320) includes a piston head (321) and a piston rod (322). The piston head (321) is in sealed sliding contact with the hydraulic cylinder (310). One end of the piston rod (322) is fixed to the piston head (321), and the other end extends downward through the bottom of the hydraulic cylinder (310). At least one sliding rod (311) extends downward from the upper end of the hydraulic cylinder (310). A sliding groove (323) extends downward from the upper surface of the piston head (321), and the sliding groove (323) is in sealed sliding contact with the sliding rod (311). A vent (324) extends vertically through the sliding rod (311), and the vent (324) connects the internal space of the sliding groove (323) to the outside. The sum of the horizontal cross-sectional areas of the sliding rod (311) is equal to the horizontal cross-sectional area of ​​the piston rod (322). An energy storage device (420) is provided on at least one of the two pipes (400) between two adjacent deformation units (300). The vertical beam (200) includes a vertical beam body (210) and a rubber pad assembly (220). The rubber pad assembly (220) includes a column (221), a rubber pad (222), an upper top plate (223), and fixing nails (224). The lower end of the column (221) is fixedly connected to the middle of the upper end of the vertical beam body (210). The middle of the rubber pad (222) has a through hole, and the rubber pad (222) is fitted onto the column (221). The outer periphery of the upper plate (223) is located above the rubber pad (222), and its upper surface is fixedly connected to the hydraulic piston (320). The fixing nail (224) is fixed on the upper plate (223) and penetrates downward through the rubber pad (222). A gap is left between the lower end of the fixing nail (224) and the vertical beam body (210), and a gap is left between the upper end of the column (221) and the upper plate (223).

2. The wind turbine installation platform according to claim 1, characterized in that, Each of the pipes (400) is equipped with a differential pressure valve (410).

3. The wind turbine installation platform according to claim 1, characterized in that, Each rubber pad assembly (220) contains multiple rubber pads (222), which are sequentially fitted around the periphery of the column (221).

Images