Dry-type looped network load pressing, arranging and loading device and method for floating fan foundation

Abstract

The invention relates to a dry-type looped network pressure and load arrangement device and method for a floating fan foundation, the device is arranged on a floating box, and the bottom of a fan stand column and the bottom of two non-fan stand columns are each provided with an adjustable ballast tank. A first water injection pipeline and a water return pipeline are arranged between each adjustable ballast tank and the pressure discharge load dry type looped network, a first hydraulic control valve is arranged on each first water injection pipeline, and a discharge load pump is arranged on each water return pipeline; when the posture of the floating fan foundation needs to be adjusted, a first hydraulic control valve of a corresponding first water injection pipeline or / and a load discharge pump of a corresponding water return pipeline are / is controlled; the ballast water is transferred from the pressure discharge load dry type looped network to the adjustable ballast tank of the stand column with less water volume or the ballast water is transferred from the adjustable ballast tank of the stand column with more water volume to the adjustable ballast tank of the stand column with less water volume, so that the balance between the water volume of the ballast water at the bottoms of the fan stand column and the two non-fan stand columns is adjusted. Therefore, the posture of the floating fan foundation can be adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of ballast water volume regulation of a floating wind turbine foundation, and in particular to a dry ring network ballast water discharge device and method for a floating wind turbine foundation. Background Art

[0002] The design of the pressure-displacement system is one of the key technologies in the design of offshore floating wind turbines (hereinafter referred to as floating wind turbines). The design of this system is directly related to the stability and safety of the platform, and plays a role in adjusting the draft and balance of the platform, while ensuring the safety of life and property of the platform and workers.

[0003] The foundations of existing floating wind turbines in China are all passively ballasted, that is, the wind turbine does not need to be adjusted after it is in place, and only needs to complete a permanent water injection process. When the wind turbine is in operation, it only relies on the performance of the floating structure itself to resist the effects of wind, waves and currents.

[0004] At present, during the process of adjusting the water pressure and discharge load of floating wind turbine foundations, it is usually necessary to open a seabed door to form a passive ballast system. The existing method of opening a seabed door for pressure and discharge load adjustment not only destroys the integrity of the wind turbine foundation structure and easily causes damage to the cabin, but also requires regular maintenance. The inspection requires divers to dive and operate, which easily causes difficulties for the inspection. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a dry ring network pressure discharge load device and method for a floating wind turbine foundation, which is used to solve the problem that the existing method of opening a seabed door to adjust the pressure discharge load not only destroys the integrity of the wind turbine foundation structure and easily causes damage to the cabin, but also requires regular maintenance and inspection. Divers need to dive to operate, which easily causes difficulties in maintenance.

[0006] To achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention discloses a dry-type ring network pressure-discharge loading device for a floating wind turbine foundation, which is arranged on a pontoon and includes a wind turbine column, two non-wind turbine columns, and a pressure-discharge loading dry-type ring network. The pontoon and the pressure-discharge loading dry-type ring network are respectively arranged at the bottom and top of the wind turbine column and the two non-wind turbine columns; an adjustable ballast tank is respectively arranged at the bottom of one of the wind turbine columns and the two non-wind turbine columns, and a first water injection pipeline and a return water pipeline are configured between each adjustable ballast tank and the pressure-discharge loading dry-type ring network, a first hydraulic control valve is arranged on each first water injection pipeline, and a load-discharge pump is arranged on each return water pipeline; When the posture of the floating wind turbine foundation needs to be adjusted, the first hydraulic control valve of the corresponding first water injection pipeline and / or the corresponding load-discharging pump of the return water pipeline are controlled to transfer ballast water from the pressure-discharging and load-drying ring network to the adjustable ballast tank of the column with less water volume or the ballast water in the adjustable ballast tank of the column with more water volume is transferred to the adjustable ballast tank of the column with less water volume, so as to adjust the balance between the ballast water volume at the bottom of one of the wind turbine columns and the two non-wind turbine columns, thereby realizing the adjustment of the posture of the floating wind turbine foundation.

[0007] Preferably, one fan column and two non-fan columns are distributed in a triangular shape, and their bottoms are all arranged on the buoyancy box; the pressure-discharge dry-type ring network is triangular, formed by three horizontal support pipes connected to each other in pairs, and the three corners of the pressure-discharge dry-type ring network are respectively arranged on the top of the fan column and the two non-fan columns.

[0008] Preferably, the pressure-discharge dry-type ring network includes three horizontal support pipes, which are respectively connected between the top of the fan column and the top of one of the non-fan columns, between the top of the fan column and the top of another non-fan column, and between the tops of two non-fan columns through a horizontal support pipe, and the three horizontal support pipes are connected in pairs to form the pressure-discharge dry-type ring network.

[0009] Furthermore, the fan column and the two non-fan columns are respectively provided with an oblique brace, the top end of the oblique brace is arranged on the fan column or the non-fan column, and the bottom end of the oblique brace is arranged on the buoyancy box.

[0010] Preferably, a plurality of permanent ballast tanks are arranged inside the pontoon, and the ballast-discharge dry-type ring network is connected to each permanent ballast tank through a second water injection pipeline, and a second hydraulic control valve is arranged on each second water injection pipeline. When the second hydraulic control valve corresponding to a permanent ballast tank that needs to be injected with ballast water is opened, the ballast-discharge dry-type ring network injects ballast water into the permanent ballast tank.

[0011] Preferably, the pontoon includes three transverse floating beams, which are connected end to end in sequence to form a triangle, and the three transverse floating beams of the pontoon correspond to and are parallel to the three horizontal support pipes of the pressure-displacement dry-type ring network.

[0012] Furthermore, a permanent ballast tank is respectively arranged at both ends of each transverse floating beam, and a total of six permanent ballast tanks are arranged on the three transverse floating beams; and a permanent ballast tank is respectively arranged at the bottom of the two non-wind turbine columns.

[0013] Preferably, the pressure-discharge dry-type ring network is connected to each adjustable ballast tank through a first water injection pipeline, and a first hydraulic control valve is arranged on each first water injection pipeline. When the first hydraulic control valve corresponding to an adjustable ballast tank that needs to be injected with ballast water is opened, the pressure-discharge dry-type ring network injects ballast water into the adjustable ballast tank.

[0014] Preferably, the fan column and the two non-fan columns are also respectively provided with a return water pipeline, each return water pipeline is provided with a load-discharging pump, and the return water pipelines on both sides of each load-discharging pump are respectively provided with a third hydraulic control valve and a fourth hydraulic control valve, and the two ends of each return water pipeline are respectively connected with the adjustable ballast tank of the fan column or the non-fan column and the pressure-discharge load-dry type ring network, and when one of the load-discharging pumps is started, the load-discharging pump draws the ballast water in the corresponding adjustable ballast tank back into the pressure-discharge load-dry type ring network.

[0015] Preferably, a load-adjusting pump is arranged on the fan column or the non-fan column, the water inlet of the load-adjusting pump is connected with a water injection pipe, and the seawater inlet of the water injection pipe is used to face the seawater; the water outlet of the load-adjusting pump is connected with the pressure-discharge dry-type ring network through a pipeline, and a manual regulating valve is arranged on the pipeline connecting the water outlet of the load-adjusting pump and the pressure-discharge dry-type ring network; when the load-adjusting pump is started and the manual regulating valve is opened, the seawater is sucked into the pressure-discharge dry-type ring network by the load-adjusting pump.

[0016] In a second aspect, the present invention further discloses a method for discharging load by a dry ring network of a floating wind turbine foundation, using the above-mentioned device, the method comprising: Step A: first inject the ballast water of the pressure-discharging dry ring network into the adjustable ballast tank of the column with less water volume; Step B: If the ballast water in the pressure-discharge dry ring network is insufficient to be injected into the adjustable ballast tank to maintain the balance between the ballast water volume at the bottom of one of the wind turbine columns and the two non-wind turbine columns, the ballast water in the adjustable ballast tank of the column with more water volume is transferred to the adjustable ballast tank of the column with less water volume, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, and then adjust the posture of the floating wind turbine foundation.

[0017] Furthermore, before implementing the step A, it is necessary to pre-fill the permanent ballast tank with water to ensure that the ballast water volume at the bottom of one of the fan columns and the two non-fan columns can reach a balance in the initial state, including the following steps: Step O1: Start the load-adjusting pump and open the manual regulating valve. The seawater is sucked into the pressure-discharge dry-type ring network through the seawater inlet by the load-adjusting pump as ballast water; Step O2: Open the second hydraulic control valves corresponding to the permanent ballast tanks to be filled with water respectively, and inject the ballast water in the pressure-discharge dry-type ring network into the permanent ballast tanks to be filled until they are full; Step O3: Open the first hydraulic control valves corresponding to the adjustable ballast tanks to be filled with water respectively, and inject the ballast water in the pressure-discharge dry ring network into the adjustable ballast tanks to be injected respectively, until each adjustable ballast tank is loaded with part of the ballast water, so as to ensure that the ballast water volume at the bottom of one fan column and the two non-fan columns can reach a balance in the initial state.

[0018] Preferably, the step B comprises the following steps: Step B1: According to the amount of ballast water at the bottom of the fan column and the two non-fan columns, the adjustable ballast tanks of the fan column and the two non-fan columns that need to be injected with ballast water are determined, wherein the adjustable ballast tank with less ballast water at the bottom of the column is used as the adjustable ballast tank that needs to be injected with ballast water; Step B2: Open the first hydraulic control valve corresponding to the adjustable ballast tank that needs to be injected with ballast water, and inject the ballast water of the pressure-discharge dry-type ring network into the adjustable ballast tank that needs to be injected with ballast water; Step B3: If the ballast water in the pressure-discharge dry-type ring network is not enough to be injected into the adjustable ballast tank to maintain the balance between the ballast water volume at the bottom of one of the fan columns and the two non-fan columns, then the adjustable ballast tank that needs to be discharged from the ballast water is determined in the adjustable ballast tanks of the fan column and the two non-fan columns, wherein the adjustable ballast tank with more ballast water volume at the bottom of the column is used as the adjustable ballast tank that needs to be discharged, and then ballast water is pumped from the adjustable ballast tank that needs to be discharged into the pressure-discharge dry-type ring network, and finally the ballast water of the pressure-discharge dry-type ring network is injected into the adjustable ballast tank that needs to be injected with ballast water until the balance between the ballast water volume at the bottom of one of the fan columns and the two non-fan columns is reached again, comprising the following steps: Step B31: Start the discharge pump on the return pipeline corresponding to the adjustable ballast tank that needs to be discharged, and open the third hydraulic control valve and the fourth hydraulic control valve on both sides of the discharge pump on the return pipeline to inject the ballast water in the adjustable ballast tank that needs to be discharged into the ballast-discharge dry type ring network; Step B32: Open the first hydraulic control valve corresponding to the adjustable ballast tank that needs to be injected with ballast water, and inject the ballast water of the pressure-discharge dry ring network into the adjustable ballast tank that needs to be injected with ballast water until the ballast water volume at the bottom of the fan column and the two non-fan columns is balanced again.

[0019] Compared with the prior art, the present invention has the following beneficial effects: (I) The present invention discloses a dry-type ring network pressure-discharge loading device for a floating wind turbine foundation, which is arranged on a buoyancy box and includes a wind turbine column, two non-wind turbine columns, and a pressure-discharge loading dry-type ring network. The buoyancy box and the pressure-discharge loading dry-type ring network are respectively arranged at the bottom and top of the wind turbine column and the two non-wind turbine columns; an adjustable ballast tank is respectively arranged at the bottom of a wind turbine column and the two non-wind turbine columns, and a first water injection pipeline and a return water pipeline are arranged between each adjustable ballast tank and the pressure-discharge loading dry-type ring network, and a first hydraulic control valve is arranged on each first water injection pipeline, and a first hydraulic control valve is arranged on each return water pipeline. A load-discharging pump; when the attitude of the floating wind turbine foundation needs to be adjusted, the ballast water of the pressure-discharging dry ring network is transferred to the adjustable ballast tank of the column with less water or the ballast water in the adjustable ballast tank of the column with more water to the adjustable ballast tank of the column with less water by controlling the first hydraulic control valve of the corresponding first water injection pipeline or / and the load-discharging pump of the corresponding return water pipeline, so as to adjust the balance between the ballast water volume at the bottom of one wind turbine column and two non-wind turbine columns, thereby realizing the adjustment of the attitude of the floating wind turbine foundation, that is, the ballast water can be transferred between the three compartments through three load-discharging pumps. The dry ring network configured by the present invention is easy to maintain, not only will not damage the integrity of the wind turbine foundation structure, but also reduces the risk, and solves the problem that the existing method of opening a seabed door for pressure-discharging adjustment not only damages the integrity of the wind turbine foundation structure, but also easily causes damage to the cabin, and also requires regular maintenance, and the maintenance requires divers to dive for operation, which easily causes difficulties in maintenance.

[0020] (ii) The present invention discloses a method for discharging loads by using a dry ring network for a floating wind turbine foundation. The ballast water of the discharging load dry ring network is first injected into the adjustable ballast tank of the column with less water volume. If the water volume is still insufficient, the ballast water in the adjustable ballast tank of the column with more water volume is transferred to the adjustable ballast tank of the column with less water volume, and the ballast water at the bottom of the floating wind turbine foundation is adjusted, thereby adjusting the posture of the floating wind turbine foundation. The method for discharging loads by using a dry ring network for a floating wind turbine foundation disclosed by the present invention can be combined with the characteristics of the floating wind turbine foundation. According to environmental conditions, the ballast water in the three columns can be transferred to each other through the discharging load dry ring network, and the posture can be adjusted to achieve an overall balance of the environmental load. This not only ensures the structural integrity of the wind turbine foundation, improves the integrity and safety of the system, and reduces the number of discharging load pumps, but also ensures that the fan blades of the wind turbine are always on the maximum windward side, thereby improving the power generation efficiency of the wind turbine.

[0021] (III) The present invention discloses a dry ring network ballast discharge method for a floating wind turbine foundation, which adopts internal circulation of ballast water and does not need to discharge and inhale external seawater during the load adjustment process, thereby reducing the corrosion of equipment such as pipelines and pumps and the breeding of marine organisms; it saves the number of ballast pumps, improves the overall integrity and safety of the wind turbine foundation, and has a high economic value.

[0022] (IV) The present invention discloses a dry ring network pressure-discharge method for a floating wind turbine foundation. Compared with the traditional solution that each column needs to have the pressure-discharge function and each column needs to be equipped with a ballast pump and a load-discharge pump, the present invention realizes the function of mutual allocation of ballast water through a ring network. Only one load-discharge pump is needed during the water injection process, and each column only needs to be equipped with one load-discharge pump during the load-discharge process. The ballast water injection function is realized by a dry ring network, which saves the number of ballast pumps, effectively reduces the initial investment cost, and reduces the energy consumption during the wind turbine load-discharge process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a top view of a dry-type ring network pressure-discharging loading device of a floating wind turbine foundation provided in Example 1 of the present invention; Figure 2 is a side view of two non-wind turbine columns of the floating wind turbine foundation provided by Example 1 of the present invention; Figure 3 It is a side view of a wind turbine column and a non-wind turbine column of the floating wind turbine foundation provided by Example 1 of the present invention; Figure 4 is a side view of the overall structure of the floating wind turbine foundation provided by Example 1 of the present invention; Figure 5 yes Figure 4 A partial enlarged view of the middle right end; Figure 6 yes Figure 4 A partial enlarged view of the middle left end; Figure 7 yes Figure 4 A partial enlargement of the middle part.

[0024] Description of reference numerals: 1-floating tank; 21- fan column, 22- non-fan column, 23- diagonal brace; 3-pressure-loaded dry ring network; 40 - adjustable ballast tank, 41 - permanent ballast tank; 5- load regulating pump, 50- seawater inlet, 51- manual regulating valve; 61-first hydraulic control valve, 62-second hydraulic control valve; 71 - load pump, 72 - third hydraulic control valve, 73 - fourth hydraulic control valve. DETAILED DESCRIPTION

[0025] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0026] In order to solve the problem that the existing method of opening a seabed door to adjust the pressure-discharge load not only destroys the integrity of the wind turbine foundation structure and easily causes damage to the cabin, but also requires regular maintenance. The inspection and repair requires divers to dive for operation, which easily causes difficulties in the inspection and repair. Firstly, the present invention discloses a dry ring network pressure-discharge load device for a floating wind turbine foundation, which is arranged on a buoyancy box, includes a wind turbine column and two non-wind turbine columns, and a pressure-discharge load dry ring network. The buoyancy box and the pressure-discharge load dry ring network are respectively arranged at the bottom and top of the wind turbine column and the two non-wind turbine columns; an adjustable ballast tank is respectively arranged at the bottom of a wind turbine column and the two non-wind turbine columns, and a first water injection pipeline and a return water pipeline are arranged between each adjustable ballast tank and the pressure-discharge load dry ring network. A first hydraulic control valve is provided on each first water injection pipeline, and a load-discharging pump is provided on each return water pipeline; when it is necessary to adjust the posture of the floating wind turbine foundation, by controlling the first hydraulic control valve of the corresponding first water injection pipeline and / or the load-discharging pump of the corresponding return water pipeline, ballast water is transferred from the ballast-discharging dry ring network to the adjustable ballast tank of the column with less water volume, or ballast water is transferred from the adjustable ballast tank of the column with more water volume to the adjustable ballast tank of the column with less water volume, so as to adjust the balance between the ballast water volume at the bottom of one wind turbine column and two non-wind turbine columns, thereby realizing the adjustment of the posture of the floating wind turbine foundation. The dry ring network configured in the present invention is convenient for maintenance, not only will it not damage the integrity of the wind turbine foundation structure, but also reduces the risk. Secondly, the present invention also discloses a method for discharging loads by using a dry ring network for a floating wind turbine foundation. The ballast water of the discharging load dry ring network is first injected into the adjustable ballast tank of the column with less water. If the water volume is still insufficient, the ballast water in the adjustable ballast tank of the column with more water is transferred to the adjustable ballast tank of the column with less water, and the ballast water at the bottom of the floating wind turbine foundation is adjusted, thereby adjusting the posture of the floating wind turbine foundation. The method for discharging loads by using a dry ring network for a floating wind turbine foundation disclosed by the present invention can be combined with the characteristics of the floating wind turbine foundation. According to environmental conditions, the ballast water in the three columns can be transferred to each other through the discharging load dry ring network, and the posture can be adjusted to achieve an overall balance of the environmental load. This not only ensures the structural integrity of the wind turbine foundation, improves the integrity and safety of the system, and reduces the number of discharging load pumps, but also keeps the fan blades of the wind turbine at the maximum windward side, thereby improving the power generation efficiency of the wind turbine.

[0027] Example 1: A dry ring network pressure discharge device for a floating wind turbine foundation Embodiment 1 of the present invention discloses a dry-type ring network pressure-discharging loading device for a floating wind turbine foundation, and its structure and connection relationship are described in detail below in conjunction with the accompanying drawings.

[0028] refer to Figures 1 to 7 The dry ring network pressure-discharge loading device of the floating wind turbine foundation is arranged on a buoyancy box 1, including a wind turbine column 21 and two non-wind turbine columns 22, and a pressure-discharge loading dry ring network 3. The buoyancy box 1 and the pressure-discharge loading dry ring network 3 are respectively arranged at the bottom and top of the wind turbine column 21 and the two non-wind turbine columns 22; wherein the floating wind turbine tower is offset on the wind turbine column 21.

[0029] An adjustable ballast tank 40 is respectively provided at the bottom of one of the fan columns 21 and the two non-fan columns 22. A first water injection pipeline and a water return pipeline are configured between each adjustable ballast tank 40 and the pressure-discharge dry ring network 3. A first hydraulic control valve 61 is provided on each first water injection pipeline, and a water discharge pump 71 is provided on each return pipeline. When the posture of the floating wind turbine foundation needs to be adjusted, by controlling the first hydraulic control valve 61 of the corresponding first water injection pipeline and / or the corresponding discharge pump 71 of the return water pipeline, ballast water is transferred from the pressure-discharge dry ring network 3 to the adjustable ballast tank 40 of the column with less water volume, or from the adjustable ballast tank 40 of the column with more water volume to the adjustable ballast tank 40 of the column with less water volume, so as to adjust the balance between the ballast water volume at the bottom of one wind turbine column 21 and the two non-wind turbine columns 22, thereby realizing the adjustment of the posture of the floating wind turbine foundation.

[0030] Among them, the first hydraulic control valve 61 of the corresponding first water injection pipeline is first controlled to inject the ballast water of the pressure-discharge dry ring network 3 into the adjustable ballast tank 40 of the column with less water volume; if the water volume is still insufficient, the corresponding discharge pump 71 of the return water pipeline and the first hydraulic control valve 61 of the corresponding first water injection pipeline are controlled to discharge the ballast water in the adjustable ballast tank 40 of the column with more water volume into the adjustable ballast tank 40 of the column with less water volume, so as to adjust the balance between the ballast water volume at the bottom of one fan column 21 and the two non-fan columns 22, thereby realizing the adjustment of the basic posture of the floating wind turbine.

[0031] Among them, the discharge pump 71 of the return pipeline is controlled to pump the ballast water of the adjustable ballast tank 40 with a large amount of water into the pressure-discharge dry type ring network 3; and then the first hydraulic control valve 61 of the corresponding first water injection pipeline is controlled to discharge the ballast water from the pressure-discharge dry type ring network 3 into the adjustable ballast tank 40 with a small amount of water, thereby realizing the discharge of the ballast water in the adjustable ballast tank 40 of the column with a large amount of water into the adjustable ballast tank 40 of the column with a small amount of water.

[0032] Specifically, one fan column 21 and two non-fan columns 22 are distributed in a triangle. Figure 1 As shown, the bottoms of these three columns are all arranged on the buoyancy box 1, as shown in FIG. Figure 2 and Figure 3 shown.

[0033] The compression-discharge load-carrying ring network 3 is triangular in shape and is formed by three horizontal support pipes connected to each other in pairs. The three corners of the compression-discharge load-carrying ring network 3 are respectively arranged on the top of the fan column 21 and the two non-fan columns 22.

[0034] As a specific method for realizing ballast water loading, the pressure-discharge dry-type ring network 3 includes three horizontal support pipes, and the top of the fan column 21 and the top of one of the non-fan columns 22, the top of the fan column 21 and the top of another non-fan column 22, and the tops of two non-fan columns 22 are respectively connected by a horizontal support pipe, and the three horizontal support pipes are connected in pairs to form the pressure-discharge dry-type ring network 3. Ballast water entering and exiting the pressure-discharge dry-type ring network 3 is realized through the three horizontal support pipes.

[0035] In order to enhance the stability of the three columns, the fan column 21 and the two non-fan columns 22 are respectively provided with a diagonal brace 23, the top end of the diagonal brace 23 is arranged on the fan column 21 or the non-fan column 22, and the bottom end of the diagonal brace 23 is arranged on the buoyancy box 1.

[0036] In order to ensure that the ballast water volume at the bottom of one wind turbine column 21 and the two non-wind turbine columns 22 can reach a balance when the floating wind turbine foundation is launched (i.e., in the initial state), a permanent ballast tank 41 is required to be set up. Specifically, a plurality of permanent ballast tanks 41 are arranged inside the pontoon 1, and the pressure-discharge dry-type ring network 3 is connected to each permanent ballast tank 41 through a second water injection pipeline, and a second hydraulic control valve 62 is arranged on each second water injection pipeline. When the second hydraulic control valve 62 corresponding to a permanent ballast tank 41 that needs to be injected with ballast water is opened, the pressure-discharge dry-type ring network 3 injects ballast water into the permanent ballast tank 41.

[0037] In order to adapt to the pressure-displacement dry-type ring network 3 with three horizontal support pipes, the pontoon 1 includes three transverse floating beams, which are connected end to end in sequence to form a triangle, and the three transverse floating beams of the pontoon 1 correspond to and are parallel to the three horizontal support pipes of the pressure-displacement dry-type ring network 3; a permanent ballast tank 41 is respectively arranged at both ends of each transverse floating beam, and a total of 6 permanent ballast tanks 41 are arranged on the three transverse floating beams.

[0038] Furthermore, a permanent ballast tank 41 is respectively provided at the bottom of the two non-wind turbine columns 22 .

[0039] The permanent ballast tanks 41 at the bottom of the two non-fan columns 22, plus the 6 permanent ballast tanks 41 of the three transverse floating beams of the pontoon 1, total 8 permanent ballast tanks 41. In addition, the 3 adjustable ballast tanks respectively configured at the bottom of the fan column 21 and the two non-fan columns 22, that is, 8 permanent ballast tanks 41 and 3 adjustable ballast tanks together constitute 11 ballast water tanks.

[0040] Specifically, the pressure-discharge dry-type ring network 3 is connected to each adjustable ballast tank 40 through a first water injection pipeline, and a first hydraulic control valve 61 is arranged on each first water injection pipeline. When the first hydraulic control valve 61 corresponding to an adjustable ballast tank 40 that needs to be injected with ballast water is opened, the pressure-discharge dry-type ring network 3 injects ballast water into the adjustable ballast tank 40.

[0041] When the posture of the floating wind turbine foundation needs to be adjusted due to the imbalance between the ballast water volume at the bottom of the wind turbine column 21 and the two non-wind turbine columns 22, the adjustable ballast tank 40 with more ballast water volume at the bottom of the wind turbine column 21 and the two non-wind turbine columns 22 needs to be used as the adjustable ballast tank 40 that needs to discharge ballast water, that is, ballast water is extracted from the adjustable ballast tank 40 that needs to discharge ballast water into the pressure-discharge dry ring network 3, and finally the ballast water of the pressure-discharge dry ring network 3 is injected into the adjustable ballast tank 40 that needs to be injected with ballast water, thereby adjusting the ballast water volume between the three adjustable ballast tanks 40. Active load adjustment is performed. For this purpose, the fan column 21 and the two non-fan columns 22 are respectively provided with a return water pipeline, each return water pipeline is provided with a load-discharging pump 71, and the return water pipelines on both sides of each load-discharging pump 71 are respectively provided with a third hydraulic control valve 72 and a fourth hydraulic control valve 73, and the two ends of each return water pipeline are respectively connected with the adjustable ballast tank 40 of the fan column 21 or the non-fan column 22 and the pressure-discharging load-dry type ring network 3. When one of the load-discharging pumps 71 is started, the load-discharging pump 71 pumps the ballast water in the corresponding adjustable ballast tank 40 back into the pressure-discharging load-dry type ring network 3, as shown in FIG. Figures 4 to 7 shown.

[0042] In order to pump seawater into the pressure-discharge dry-type ring network 3 as a ballast water source for achieving ballast balance, a load adjustment pump 5 is arranged on the fan column 21 or the non-fan column 22, that is, the water source for injecting ballast water into the permanent ballast tank 41 and the adjustable ballast tank 40 of the floating wind turbine foundation. The water inlet of the load adjustment pump 5 is connected with a water injection pipe, and the seawater inlet 50 of the water injection pipe is used to face the seawater; the water outlet of the load adjustment pump 5 is connected to the pressure-discharge dry-type ring network 3 through a pipeline, and a manual regulating valve 51 is arranged on the pipeline connecting the water outlet of the load adjustment pump 5 and the pressure-discharge dry-type ring network 3. When the load adjustment pump 5 is started and the manual regulating valve 51 is opened, the seawater is sucked into the pressure-discharge dry-type ring network 3 by the load adjustment pump 5. Figure 7 shown.

[0043] Example 2: A dry ring network active ballasting method for a floating wind turbine foundation Embodiment 2 of the present invention provides a method for pressing and discharging a dry ring network of a floating wind turbine foundation, using the dry ring network pressing and discharging device of a floating wind turbine foundation provided in Embodiment 1, and the method comprises the following steps: Step A: first inject the ballast water of the pressure-discharging dry ring network 3 into the adjustable ballast tank 40 of the column with less water volume; Step B: If the ballast water in the pressure-discharge dry ring network 3 is not enough to be injected into the adjustable ballast tank 40 to maintain the balance between the ballast water volume at the bottom of one of the wind turbine columns 21 and the two non-wind turbine columns 22, the ballast water in the adjustable ballast tank 40 of the column with more water volume is transferred to the adjustable ballast tank 40 of the column with less water volume, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, and then adjust the posture of the floating wind turbine foundation.

[0044] Before implementing the step A, it is necessary to pre-fill the permanent ballast tank 41 with water to ensure that the ballast water volume at the bottom of one fan column 21 and the two non-fan columns 22 can reach a balance in the initial state, including the following steps: Step O1: Start the load-adjusting pump 5 and open the manual regulating valve 51, and the seawater is sucked into the pressure-discharge dry-type ring network 3 by the load-adjusting pump 5 through the seawater inlet 50 as ballast water; Step O2: Open the second hydraulic control valves 62 corresponding to the permanent ballast tanks 41 to be filled with water respectively, and inject the ballast water in the pressure-discharge dry ring network 3 into the permanent ballast tanks 41 to be filled until they are full; Step O3: Open the first hydraulic control valves 61 corresponding to the adjustable ballast tanks 40 to be filled with water respectively, and inject the ballast water in the pressure-discharge dry ring network 3 into the adjustable ballast tanks 40 to be injected respectively, until each adjustable ballast tank 40 is loaded with part of the ballast water, so as to ensure that the ballast water volume at the bottom of one fan column 21 and the two non-fan columns 22 can reach a balance in the initial state.

[0045] The initial state refers to the state of the floating wind turbine foundation just after it is launched into water.

[0046] When the posture of the floating wind turbine foundation needs to be adjusted due to an imbalance between the ballast water volumes at the bottom of the wind turbine column 21 and the two non-wind turbine columns 22, the ballast water in the adjustable ballast tanks 40 of the wind turbine column 21 and the two non-wind turbine columns 22 is actively adjusted, and the ballast water volumes at the bottom of one wind turbine column 21 and the two non-wind turbine columns 22 are readjusted to regain balance.

[0047] Specifically, the step B comprises the following steps: Step B1: According to the amount of ballast water at the bottom of the fan column 21 and the two non-fan columns 22, the adjustable ballast tanks 40 that need to be injected with ballast water are determined among the adjustable ballast tanks 40 of the fan column 21 and the two non-fan columns 22, wherein the adjustable ballast tank 40 with less ballast water at the bottom of the column is used as the adjustable ballast tank 40 that needs to be injected with ballast water; Step B2: Open the first hydraulic control valve 61 corresponding to the adjustable ballast tank 40 that needs to be injected with ballast water, and inject the ballast water of the pressure-discharge dry ring network 3 into the adjustable ballast tank 40 that needs to be injected with ballast water; Step B3: If the ballast water in the pressure-discharge dry-type ring network 3 is not enough to be injected into the adjustable ballast tank 40 to maintain the balance between the ballast water volume at the bottom of one fan column 21 and the two non-fan columns 22, then the adjustable ballast tank 40 that needs to discharge ballast water is determined in the adjustable ballast tanks 40 of the fan column 21 and the two non-fan columns 22, wherein the adjustable ballast tank 40 with more ballast water at the bottom of the column is used as the adjustable ballast tank 40 that needs to discharge ballast water, and then ballast water is drawn from the adjustable ballast tank 40 that needs to be discharged into the pressure-discharge dry-type ring network 3, and finally the ballast water of the pressure-discharge dry-type ring network 3 is injected into the adjustable ballast tank 40 that needs to be injected with ballast water until the balance between the ballast water volume at the bottom of one fan column 21 and the two non-fan columns 22 is reached again, including the following steps: Step B31: Start the discharge pump 71 on the return water pipeline corresponding to the adjustable ballast tank 40 that needs to be discharged, and open the third hydraulic control valve 72 and the fourth hydraulic control valve 73 on both sides of the discharge pump 71 on the return water pipeline to inject the ballast water in the adjustable ballast tank 40 that needs to be discharged into the ballast-discharge dry ring network 3; Step B32: Open the first hydraulic control valve 61 corresponding to the adjustable ballast tank 40 that needs to be injected with ballast water, and inject the ballast water of the pressure-discharge dry ring network 3 into the adjustable ballast tank 40 that needs to be injected with ballast water until the ballast water volume at the bottom of the fan column 21 and the two non-fan columns 22 reaches a balance again.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dry type ring network pressure discharge loading device for a floating wind turbine foundation, arranged on a buoyancy box (1), characterized in that: It comprises a fan column (21), two non-fan columns (22), and a pressure-discharge load-carrying dry type ring net (3), wherein the buoyancy box (1) and the pressure-discharge load-carrying dry type ring net (3) are respectively arranged at the bottom and top of the fan column (21) and the two non-fan columns (22); An adjustable ballast tank (40) is respectively disposed at the bottom of one of the fan columns (21) and the two non-fan columns (22); a first water injection pipeline and a water return pipeline are disposed between each adjustable ballast tank (40) and the pressure-discharge-load dry ring network (3); a first hydraulic control valve (61) is disposed on each first water injection pipeline, and a water discharge pump (71) is disposed on each return pipeline; When the posture of the floating wind turbine foundation needs to be adjusted, the first hydraulic control valve (61) of the corresponding first water injection pipeline and / or the corresponding discharge pump (71) of the return water pipeline are controlled to transfer ballast water from the pressure-discharge dry ring network (3) to the adjustable ballast tank (40) of the column with less water volume, or transfer ballast water from the adjustable ballast tank (40) of the column with more water volume to the adjustable ballast tank (40) of the column with less water volume, so as to adjust the balance between the ballast water volume at the bottom of one wind turbine column (21) and the two non-wind turbine columns (22), thereby achieving adjustment of the posture of the floating wind turbine foundation.

2. The device according to claim 1, characterized in that One fan column (21) and two non-fan columns (22) are distributed in a triangular shape, and their bottoms are all arranged on the buoyancy box (1); The compression-discharge load-carrying ring network (3) is triangular in shape and is formed by three horizontal support pipes connected to each other in pairs. The three corners of the compression-discharge load-carrying ring network (3) are respectively arranged on the top of the fan column (21) and the two non-fan columns (22).

3. The device according to claim 2, characterized in that The pressure-discharge load-carrying dry type ring network (3) comprises three horizontal support pipes, and the top of the fan column (21) and the top of one of the non-fan columns (22), the top of the fan column (21) and the top of another non-fan column (22), and the tops of two non-fan columns (22) are respectively connected by a horizontal support pipe, and the three horizontal support pipes are connected in pairs to form the pressure-discharge load-carrying dry type ring network (3); The fan column (21) and the two non-fan columns (22) are respectively provided with an inclined brace (23); the top end of the inclined brace (23) is arranged on the fan column (21) or the non-fan column (22), and the bottom end of the inclined brace (23) is arranged on the buoyancy box (1).

4. The device according to claim 3, characterized in that The buoyancy tank (1) is provided with a plurality of permanent ballast tanks (41) inside. The ballast-discharge dry type ring network (3) is connected to each permanent ballast tank (41) via a second water injection pipeline, and a second hydraulic control valve (62) is provided on each second water injection pipeline. When the second hydraulic control valve (62) corresponding to a permanent ballast tank (41) that needs to be injected with ballast water is opened, the ballast-discharge dry type ring network (3) injects ballast water into the permanent ballast tank (41).

5. The device according to claim 4, characterized in that The pontoon (1) comprises three transverse floating beams, which are connected end to end in sequence to form a triangle, and the three transverse floating beams of the pontoon (1) correspond to and are parallel to three horizontal support pipes of the pressure-displacement dry-type ring network (3); A permanent ballast tank (41) is respectively arranged at both ends of each transverse floating beam, and a total of six permanent ballast tanks (41) are arranged on the three transverse floating beams; A permanent ballast tank (41) is respectively provided at the bottom of the two non-blower columns (22).

6. The device according to claim 1, characterized in that The ballast-discharging dry type ring network (3) is connected to each adjustable ballast tank (40) via a first water injection pipeline, and a first hydraulic control valve (61) is provided on each first water injection pipeline. When the first hydraulic control valve (61) corresponding to an adjustable ballast tank (40) that needs to be injected with ballast water is opened, the ballast-discharging dry type ring network (3) injects ballast water into the adjustable ballast tank (40); The fan column (21) and the two non-fan columns (22) are also respectively provided with a return water pipeline, each return water pipeline is provided with a load-discharging pump (71), and the return water pipelines on both sides of each load-discharging pump (71) are respectively provided with a third hydraulic control valve (72) and a fourth hydraulic control valve (73), and the two ends of each return water pipeline are respectively connected to the adjustable ballast tank (40) of the fan column (21) or the non-fan column (22) and the pressure-discharging load-dry type ring network (3), and when one of the load-discharging pumps (71) is started, the load-discharging pump (71) pumps the ballast water in the corresponding adjustable ballast tank (40) back into the pressure-discharging load-dry type ring network (3).

7. The device according to claim 1, characterized in that A load-adjusting pump (5) is disposed on the fan column (21) or the non-fan column (22), the water inlet of the load-adjusting pump (5) being connected to a water injection pipe, and the seawater inlet (50) of the water injection pipe being used to face the seawater; The water outlet of the load-adjusting pump (5) is connected to the pressure-discharge load-drying ring network (3) through a pipeline, and a manual regulating valve (51) is provided on the pipeline connecting the water outlet of the load-adjusting pump (5) and the pressure-discharge load-drying ring network (3). When the load-adjusting pump (5) is started and the manual regulating valve (51) is opened, seawater is sucked into the pressure-discharge dry-type ring network (3) by the load-adjusting pump (5).

8. A method for discharging loads by pressing a dry ring network of a floating wind turbine foundation, using the device described in any one of claims 1 to 7, characterized in that: include: Step A: first injecting ballast water from the pressure-discharging dry-type ring net (3) into the adjustable ballast tank (40) of the column with less water volume; Step B: If the ballast water in the compression and discharge dry ring network (3) is insufficient to be injected into the adjustable ballast tank (40) to maintain the balance between the ballast water volume at the bottom of one of the wind turbine columns (21) and the two non-wind turbine columns (22), the ballast water in the adjustable ballast tank (40) of the column with more water volume is transferred to the adjustable ballast tank (40) of the column with less water volume, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, thereby adjusting the posture of the floating wind turbine foundation.

9. The method according to claim 8, characterized in that Before implementing step A, it is necessary to pre-fill the permanent ballast tank (41) with water to ensure that the ballast water volume at the bottom of one of the fan columns (21) and the two non-fan columns (22) can reach a balance in the initial state, including the following steps: Step O1: Start the load-adjusting pump (5) and open the manual regulating valve (51), so that seawater is sucked into the pressure-discharge dry-type ring network (3) through the seawater inlet (50) by the load-adjusting pump (5) as ballast water; Step O2: opening the second hydraulic control valves (62) corresponding to the permanent ballast tanks (41) to be filled with water respectively, and injecting the ballast water in the pressure-discharge dry-type ring network (3) into the permanent ballast tanks (41) to be filled respectively until the ballast tanks (41) are filled; Step O3: Open the first hydraulic control valves (61) corresponding to the adjustable ballast tanks (40) to be filled with water respectively, and inject the ballast water in the pressure-discharge dry ring network (3) into the adjustable ballast tanks (40) to be filled respectively, until each adjustable ballast tank (40) is loaded with part of the ballast water, so as to ensure that the ballast water volume at the bottom of one of the fan columns (21) and the two non-fan columns (22) can reach a balance in the initial state.

10. The method according to claim 8, characterized in that The step B comprises the following steps: Step B1: according to the amount of ballast water at the bottom of the fan column (21) and the two non-fan columns (22), the adjustable ballast tanks (40) of the fan column (21) and the two non-fan columns (22) are determined to be the adjustable ballast tanks (40) that need to be injected with ballast water, wherein the adjustable ballast tank (40) with the less amount of ballast water at the bottom of the column is used as the adjustable ballast tank (40) that needs to be injected with ballast water; Step B2: opening the first hydraulic control valve (61) corresponding to the adjustable ballast tank (40) that needs to be injected with ballast water, and injecting the ballast water of the pressure-discharge dry-type ring network (3) into the adjustable ballast tank (40) that needs to be injected with ballast water; Step B3: If the ballast water in the pressure-discharge dry ring network (3) is insufficient to be injected into the adjustable ballast tank (40) to maintain the balance between the ballast water volume at the bottom of one of the fan columns (21) and the two non-fan columns (22), then the adjustable ballast tank (40) that needs to be discharged ballast water is determined among the adjustable ballast tanks (40) of the fan column (21) and the two non-fan columns (22), wherein the adjustable ballast tank (40) with more ballast water volume at the bottom of the column is determined. The load tank (40) is used as an adjustable ballast tank (40) that needs to discharge ballast water, then ballast water is pumped from the adjustable ballast tank (40) that needs to discharge water into the pressure-discharge load-dry type ring network (3), and finally the ballast water of the pressure-discharge load-dry type ring network (3) is injected into the adjustable ballast tank (40) that needs to be injected with ballast water until the ballast water volume at the bottom of one of the fan columns (21) and the two non-fan columns (22) is balanced again, comprising the following steps: Step B31: starting the discharge pump (71) on the return water pipeline corresponding to the adjustable ballast tank (40) that needs to be discharged, and opening the third hydraulic control valve (72) and the fourth hydraulic control valve (73) on both sides of the discharge pump (71) on the return water pipeline, so as to inject the ballast water in the adjustable ballast tank (40) that needs to be discharged into the ballast-discharge dry type ring network (3); Step B32: Open the first hydraulic control valve (61) corresponding to the adjustable ballast tank (40) that needs to be injected with ballast water, and inject the ballast water of the pressure-discharge dry ring network (3) into the adjustable ballast tank (40) that needs to be injected with ballast water, until the ballast water volume at the bottom of the fan column (21) and the two non-fan columns (22) is balanced again.

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