Floating type fan platform

Abstract

The utility model discloses a floating type draught fan platform which comprises a buoy temporarily supported on a supporting column, the buoy is connected with the draught fan platform through a vertical steel cable, during construction, after a draught fan is provided with part of components, the draught of the floating type draught fan platform is increased, the buoy is emptied to provide vertical buoyancy, part of the weight of the draught fan is offset, and after the draught fan is hoisted, the buoy is connected with the draught fan platform through the vertical steel cable. The method comprises the following steps: dragging a floating fan platform to a deepwater area, injecting water into the platform to sink in the deepwater area, injecting water into the buoy to sink, and after the buoy is supported on a supporting structure of the platform, releasing a vertical connecting steel cable of the buoy and the platform, draining ballast water of the buoy, floating the buoy, separating from the platform, assisting in displacement of the buoy, and finishing installation of the fan. Construction is completed under the condition that the water depth of a wharf is insufficient by combining the separated floating cylinder with the fan platform.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore wind power engineering technical field more specifically, and it is a kind of floating wind turbine platform. BACKGROUND

[0002] With the continuous development of offshore wind power, the valuable field area in coastal area is basically developed, offshore wind power gradually develops from nearshore low capacity to deep sea, large capacity, floating wind turbine foundation has lower sensitivity to water depth, and deep sea wind resource is more abundant, compared with fixed foundation, it has better economy, floating wind turbine foundation will be the main foundation form of deep sea wind farm development, and it will be the main direction of global double carbon realization in the future to develop deep sea wind power resource by matching large capacity wind turbine.

[0003] The main problem of large capacity wind turbine application in floating foundation is that: due to the characteristics of high impeller height, large tower weight, large wind turbine weight and large wind thrust, large capacity wind turbine is easy to cause large design size, large weight and deep water depth of static balance of floating foundation, so as to require deeper water depth of wharf when installing wind turbine in integrated manner, and limited by current construction technology and equipment, wind turbine installation generally selects wharf near target working wind field to reduce integrated towing cost and offshore installation risk, but there is generally insufficient water depth of wharf in China, especially there are fewer wharfs that meet the water depth of wind turbine integrated installation near target working wind field. UTILITARIAN CONTENT

[0004] In view of the above defects or improvement needs of prior art, the utility model provides a floating wind turbine platform, which solves the problem of insufficient water depth of wharf installation of large weight wind turbine.

[0005] In order to achieve the above purpose, according to the utility model provides a kind of floating wind turbine platform, wind turbine platform includes the multiple vertical columns of fixed connection, and the heaving tank of being set to each vertical column bottom, the wind turbine platform is provided with the water pressure drainage system, including float, and the steel cable of two ends respectively fixed in the heaving tank and the float, the float is the watertight structure including cavity, the water pressure drainage system adjusts the buoyancy of the float, the heaving tank is provided with the support column of supporting the float.

[0006] The construction process of the fan platform is as follows: the pontoon is temporarily supported on the support column of the fan platform, the pontoon is connected with the fan platform through vertical steel cables, after part of components of the fan are installed, the draft of the floating fan platform is increased, the pontoon is emptied to provide vertical buoyancy to offset part of the weight of the fan, after the fan is hoisted, the floating fan platform is towed to a deep water area, the platform is sunk by being filled with water, and the pontoon is sunk by being filled with water, after the pontoon is supported on the support column of the platform, the vertical connecting steel cables between the pontoon and the platform are released, the ballast water in the pontoon is discharged, the pontoon is floated up and separated from the platform, the pontoon is assisted to be moved, and the fan is installed.

[0007] Further, the pontoon comprises a plurality of arc-shaped skeletons, a plurality of square frames are uniformly arranged along the arc-shaped skeletons, and the square frames and the arc-shaped skeletons are sealed by a skin to form the cavity.

[0008] Further, a plurality of pipes are vertically arranged in the cavity, the steel cables are slidably connected with the pipes, two ends of the pipes are sealed by the skin, one end of the steel cable is fixed to the top surface of the pontoon by penetrating the pipe, and the other end is fixed to the fan platform.

[0009] Further, the upper end of the steel cable is fixed to the surface of the pontoon by an anchor head, and the pontoon can be conveniently separated from the fan platform by releasing the anchor head.

[0010] Overall, compared with the prior art, the above technical scheme conceived by the utility model can achieve the following beneficial effects:

[0011] (1) The utility model provides a floating fan platform, and starting from the feasibility and convenience of construction, the floating fan platform is increased by adding a pontoon on the stand column, the floating force of the floating fan platform during fan installation is increased, the pontoon is fixed on the platform by a steel cable before fan installation, the floating force of the platform is increased by a water pressure drainage system to reduce the draft after integrated fan installation, and the pontoon is removed after fan installation, so that the problem of insufficient water depth of a wharf during installation of a large-capacity floating fan platform on the wharf can be solved. DRAWINGS

[0012] Figure 1 It is a structural schematic view of the pontoon and the fan platform of the utility model embodiment;

[0013] Figure 2 It is a partial enlarged view A of Figure 1

[0014] ​Figure 3 It is the internal structure schematic view of the buoy in the embodiment of the utility model;

[0015] Figure 4 It is the structure schematic view of the buoy in the embodiment of the utility model.

[0016] In all the drawings, same reference signs represent same technical features, specifically: 1, stand column; 2, heave tank; 3, pressure drainage system; 4, anchoring head; 5, buoy; 6, steel cable; 7, support column; 8, cavity; 9, skin; 10, framework; 51, square frame; 52, arc-shaped framework; 53, pipeline. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model is further explained in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] As Figures 1-4 shown, the embodiment provides a floating type fan platform, taking a semi-submersible three-stand-column floating type fan platform as a main body example, the fan platform comprises three vertical stand columns 1 connected by a framework 10, and a heave tank 2 fixed at the bottom of the stand column, and the fan platform is further provided with an auxiliary device, the auxiliary device comprises an anchoring head 4, a buoy 5, a steel cable 6 and a support column 7, wherein the buoy 5 is a watertight structure containing a cavity 8, is provided with a pressure drainage system 3 arranged on the fan platform, the buoyancy of the buoy 5 can be adjusted through the pressure drainage, the heave tank 2 is located at the bottom of the stand column 1, the steel cable 6 is uniformly arranged in multiple, the top end of the steel cable 6 penetrates through the buoy 5 and is fixed through the anchoring head 4, and the lower end of the steel cable 6 is fixed to the heave tank 2, the steel cable 6 is used for adjusting the distance between the buoy 5 and the heave tank 2, the support column 7 is fixed to the heave tank 2 at the bottom, and the buoy 5 is supported when reaching the top of the support column 7.

[0019] Further, the buoy 5 is a structure surrounding part of the side surface of the stand column 1 and is arranged in close contact with the side surface of the stand column 1. Preferably, the buoy 5 is symmetrically arranged on both sides of the stand column 1, there is a gap of 200 mm between the buoy 5 and the outer wall of the stand column 1, and a wooden anti-collision piece is fixedly arranged in the gap, so as to prevent the buoy 5 from directly colliding with the stand column 1.

[0020] Further, the pontoon 5 comprises a plurality of arc-shaped skeletons 52, and the square frames 51 are evenly distributed along the arc-shaped skeletons 52 to form an internal steel frame structure, and the steel frame is sealed by the skin 9 to form the cavity 8, and the top plate is formed on the upper surface of the pontoon 5, and the bottom plate is formed on the lower surface, and a plurality of pipes 53 are vertically arranged in the cavity 8 for passing through the steel cable 6, and the two ends of the pipe 53 extend out of the reserved holes in the skin 9 and are sealingly connected with the skin 9, and the steel cable 6 can slide in the pipe 53.

[0021] Further, the pontoon 5 can be temporarily supported on the fan platform, when the fan is installed, the draft of the fan platform is increased, the pontoon 5 provides vertical floating support to offset part of the weight of the fan, after the fan is hoisted and installed on the fan platform, the fan platform is towed to the deep water area, and water is injected into the fan platform to sink, at the same time, the drainage system 3 injects water into the pontoon 5 to sink, when the pontoon 5 is lowered to the support column 7 on the platform, the steel cable 6 between the pontoon 5 and the fan platform is released, and the ballast water in the pontoon 5 is emptied, the pontoon 5 is floated to be separated from the fan platform, and the pontoon 5 assists the fan platform to move, and the installation of the fan is completed.

[0022] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A floating wind turbine platform, comprising multiple columns (1) connected by a frame (10), and a heave chamber (2) disposed at the bottom of each column (1), wherein the wind turbine platform is provided with a pressurized drainage system (3), characterized in that, It includes a pontoon (5) and steel cables (6) fixed at both ends to the heave chamber (2) and the pontoon (5) respectively. The pontoon (5) is a watertight structure containing a cavity (8). The pressure drainage system (3) adjusts the buoyancy of the pontoon (5). The heave chamber (2) is provided with a support column (7) to support the pontoon (5).

2. The floating wind turbine platform according to claim 1, characterized in that, The pontoon (5) includes multiple arc-shaped frames (52), and multiple square frames (51) are evenly distributed along the arc-shaped frames (52). The square frames (51) and the arc-shaped frames (52) are sealed with skin (9) to form the cavity (8).

3. A floating wind turbine platform according to claim 2, characterized in that, Multiple pipes (53) are vertically arranged in the cavity (8), the steel cable (6) is slidably connected to the pipes (53), and the two ends of the pipes (53) are sealed to the skin (9).

4. A floating wind turbine platform according to claim 1, characterized in that, The upper end of the steel cable (6) is fixed to the surface of the pontoon (5) by the anchor head (4).

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