Wet-type looped network pressure load arrangement system and method for floating fan foundation

Abstract

The invention relates to a wet-type looped network pressure-discharge load system and method for a floating fan foundation, and the system comprises a pressure-discharge load wet-type looped network which comprises a control pipeline. One-way communication between the first connector and the second connector or between the first connector and the third connector or between the second connector and the third connector can be controlled through one ballast pump and a plurality of control valves; when the posture of the floating fan foundation needs to be adjusted, ballast water is mutually adjusted among the first adjustable ballast tank, the second adjustable ballast tank and the third adjustable ballast tank by controlling a ballast pump and a plurality of control valves of a pipeline; and the ballast water in the adjustable ballast tank of the stand column with a large amount of water is transferred into the adjustable ballast tank of the stand column with a small amount of water, so that the ballast water at the bottom of the floating fan foundation is adjusted, the balance between the amount of the ballast water at the bottom of one fan stand column and the amount of the ballast water at the bottom of the two non-fan stand columns is maintained, and adjustment of the posture of the floating fan foundation is achieved.

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 wet ring network ballast water discharge system 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 wet ring network pressure discharge load system 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 inspections, which requires divers to dive and operate, easily causing difficulties in inspections.

[0006] To achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention discloses a wet ring network pressure discharge system for a floating wind turbine foundation, which is arranged on a pontoon, and includes a wind turbine column and two non-wind turbine columns, a horizontal support frame, and the pontoon and the horizontal support frame are respectively arranged at the bottom and top of the wind turbine column and the two non-wind turbine columns, and the bottom of one wind turbine column and the two non-wind turbine columns are respectively provided with a first adjustable ballast tank, a second adjustable ballast tank, and a third adjustable ballast tank; The buoyancy box is immersed in a wet ring net without pressure discharge, The ballast-discharging wet ring network includes a control pipeline, on which a ballast pump and a first interface, a second interface, and a third interface are arranged, and the first interface, the second interface, and the third interface are respectively arranged on a first adjustable ballast tank, a second adjustable ballast tank, and a third adjustable ballast tank; the ballast pump is equipped with a plurality of control valves, and the one-way communication between the first interface and the second interface, between the first interface and the third interface, or between the second interface and the third interface can be controlled by a ballast pump and the plurality of control valves; When the attitude of the floating wind turbine foundation needs to be adjusted, the ballast water is transferred between the first adjustable ballast tank, the second adjustable ballast tank and the third adjustable ballast tank through a ballast pump and a plurality of control valves of the control pipeline, and 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, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, 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, and realize the adjustment of the attitude of the floating wind turbine foundation.

[0007] Furthermore, the control pipeline includes a first branch, a second branch, and a third branch. The first interface and the second interface are connected via a first branch, and a first control valve is provided on the first branch; The first interface and the third interface are connected via a second branch, and a second control valve is provided on the second branch; The second interface is connected to the third interface via a third branch, and a third control valve is arranged on the third branch.

[0008] Furthermore, the control pipeline also includes a fourth branch and a fifth branch. The upper node and the lower node of the fourth branch are respectively arranged on the first branch and the second branch, and the fourth branch is connected in parallel with the third branch; The left end node and the right end node of the fifth branch are respectively arranged on the fourth branch and the second branch, and the second control valve is located on the second branch between the lower end node and the right end node; Wherein, the ballast pump is arranged on the fifth branch, and the fifth branch on both sides of the ballast pump is respectively provided with a fourth control valve and a fifth control valve, and the ballast pump is a one-way pump, the inlet of the ballast pump faces the fourth control valve, and the outlet of the ballast pump faces the fifth control valve, so as to ensure that the medium can only flow from the fourth control valve to the fifth control valve through the ballast pump, and cannot flow in the reverse direction; A sixth control valve and a seventh control valve are respectively arranged on the fourth branch between the left end node and the upper end node and on the fourth branch between the left end node and the lower end node; An eighth control valve is provided on the first branch connected in parallel with the fifth branch, and the eighth control valve is located on the first branch between the upper node and the first interface; A ninth control valve is provided on the second branch connected in parallel with the fifth branch, and the ninth control valve is located on the second branch between the right end node and the first interface; When it is necessary to transport the medium from the first interface to the second interface, only the eighth control valve, the sixth control valve, the fourth control valve, the fifth control valve, the second control valve, and the third control valve are opened and other valves are closed; when it is necessary to transport the medium from the second interface to the first interface, only the first control valve, the sixth control valve, the fourth control valve, the fifth control valve, and the ninth control valve are opened and other valves are closed; When it is necessary to transport the medium from the first interface to the third interface, only the eighth control valve, the sixth control valve, the fourth control valve, the fifth control valve, and the second control valve are opened and other valves are closed; when it is necessary to transport the medium from the third interface to the first interface, only the seventh control valve, the fourth control valve, the fifth control valve, and the ninth control valve are opened and other valves are closed; When it is necessary to transport the medium from the second interface to the third interface, only the first control valve, the sixth control valve, the fourth control valve, the fifth control valve, and the second control valve need to be opened and the other valves need to be closed; when it is necessary to transport the medium from the third interface to the second interface, only the seventh control valve, the fourth control valve, the fifth control valve, the ninth control valve, and the first control valve need to be opened and the other valves need to be closed.

[0009] Furthermore, a tenth control valve is provided at the docking point between the first interface and the first adjustable ballast tank, an eleventh control valve is provided at the docking point between the second interface and the second adjustable ballast tank, and a twelfth control valve is provided at the docking point between the third interface and the third adjustable ballast tank.

[0010] Further, the ballast discharge wet ring network includes a ballast water inlet, and the ballast water inlet is lower than the ballast water level of the adjustable ballast tank; The intersection of the first branch and the second branch is a fifth node, the first branch between the fifth node and the fifth control valve is provided with a sixth node, the sixth node is connected to the ballast water inlet through an input pipe, and the input pipe is provided with an input control valve; When the input control valve and the tenth control valve are opened and other valves are closed, seawater enters the first adjustable ballast tank; When the input control valve, the eighth control valve, the first control valve, and the eleventh control valve are opened and other valves are closed, seawater enters the second adjustable ballast tank; When the input control valve, the eighth control valve, the first control valve, the third control valve, and the twelfth control valve are opened and other valves are closed, seawater enters into the third adjustable ballast tank.

[0011] Preferably, the ballast discharge wet ring network includes a ballast water outlet, and the ballast water outlet is lower than the ballast water level of the adjustable ballast tank; A seventh node is provided on the fifth branch between the right end node and the fifth control valve, the seventh node is connected to the ballast water outlet through an output pipe, and an output control valve is provided on the output pipe; When the ninth control valve and the second control valve are closed and the fifth control valve and the output control valve are opened, the medium flowing out of the outlet of the ballast pump can be discharged through the ballast water outlet.

[0012] Furthermore, the pressure-discharge wet-type ring network is also equipped with a controller. The first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, the sixth control valve, the seventh control valve, the eighth control valve, the ninth control valve, the tenth control valve, the eleventh control valve and the twelfth control valve are all electrically controlled valves; The ballast pump, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, the sixth control valve, the seventh control valve, the eighth control valve, the ninth control valve, the tenth control valve, the eleventh control valve and the twelfth control valve are all connected to the controller.

[0013] Preferably, one fan column and two non-fan columns are distributed in a triangular shape, and their bottoms are all arranged on the pontoon; the horizontal support frame is triangular, and the three corners of the horizontal support frame are respectively arranged on the top of the fan column and the two non-fan columns.

[0014] Preferably, the horizontal support frame includes three horizontal support rods, which are connected to each other in pairs to form the horizontal support frame. The top of the fan column and the top of one of the non-fan columns, the top of the fan column and the top of another non-fan column, and the tops of two non-fan columns are respectively connected by a horizontal support rod. The three horizontal support rods are connected in pairs to form the horizontal support frame.

[0015] Preferably, 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.

[0016] Furthermore, it includes eight permanent ballast tanks, the pontoon includes three transverse floating beams, the three transverse floating beams 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 rods of the horizontal support frame, and 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 the six permanent ballast tanks are all arranged inside the pontoon; a permanent ballast tank is respectively arranged at the bottom of the two non-wind turbine columns.

[0017] In a second aspect, the present invention further discloses a wet ring network pressure discharging method for a floating wind turbine foundation, which adopts the above-mentioned system and is characterized by comprising: Step S1: 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 and the adjustable ballast tanks from which ballast water is pumped out are determined, wherein the adjustable ballast tanks with less ballast water at the bottom of the column are used as the adjustable ballast tanks that need to be injected with ballast water, and the adjustable ballast tanks of the columns with more ballast water are used as the adjustable ballast tanks from which ballast water is pumped out; Step S2: after 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, it is determined whether the ballast water in the adjustable ballast tank of the column with less water is sufficient to maintain the balance between the ballast water volume at the bottom of one of the fan columns and the two non-fan columns. If yes, the ballast water in the adjustable ballast tank from which the ballast water is pumped out is transferred to the adjustable ballast tank that needs to be filled with ballast water. The specific steps are as follows: When it is necessary to transfer ballast water from the first adjustable ballast tank to the second adjustable ballast tank, only the tenth control valve, the eighth control valve, the sixth control valve, the fourth control valve, the fifth control valve, the second control valve, the third control valve and the eleventh control valve need to be opened and the other valves need to be closed; When it is necessary to transfer ballast water from the second adjustable ballast tank to the first adjustable ballast tank, only the eleventh control valve, the first control valve, the sixth control valve, the fourth control valve, the fifth control valve, the ninth control valve and the tenth control valve need to be opened and the other valves need to be closed; When it is necessary to transfer ballast water from the first adjustable ballast tank to the third adjustable ballast tank, only the tenth control valve, the eighth control valve, the sixth control valve, the fourth control valve, the fifth control valve, the second control valve and the twelfth control valve need to be opened and the other valves need to be closed; When it is necessary to transfer ballast water from the third adjustable ballast tank to the first adjustable ballast tank, only the twelfth control valve, the seventh control valve, the fourth control valve, the fifth control valve, the ninth control valve and the tenth control valve need to be opened and the other valves need to be closed; When it is necessary to transfer ballast water from the second adjustable ballast tank to the third adjustable ballast tank, only the eleventh control valve, the first control valve, the sixth control valve, the fourth control valve, the fifth control valve, the second control valve and the twelfth control valve need to be opened and the other valves need to be closed; When it is necessary to transfer ballast water from the third adjustable ballast tank to the second interface, only the twelfth control valve, the seventh control valve, the fourth control valve, the fifth control valve, the ninth control valve, the first control valve and the eleventh control valve need to be opened and the other valves need to be closed; If 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 in the adjustable ballast tank of the column with less water is still insufficient 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 input control valve is opened to directly inject seawater into the adjustable ballast tank that needs to be injected with ballast water. The specific steps are as follows: When the adjustable ballast tank that needs to be injected with ballast water is the first adjustable ballast tank, the input control valve and the tenth control valve are opened and other valves are closed, and seawater enters the first adjustable ballast tank; When the adjustable ballast tank that needs to be injected with ballast water is the second adjustable ballast tank, the input control valve, the eighth control valve, the first control valve, the eleventh control valve are opened and other valves are closed, and seawater enters the second adjustable ballast tank; When the adjustable ballast tank that needs to be injected with ballast water is the third adjustable ballast tank, the input control valve, the eighth control valve, the first control valve, the third control valve, the twelfth control valve are opened and other valves are closed, and seawater enters the third adjustable ballast tank; If after opening the input control valve and directly injecting seawater into the adjustable ballast tank that needs to be injected with ballast water, the amount of ballast water at the bottom of one of the fan columns and the two non-fan columns still cannot be balanced, repeat the step of transferring the ballast water from the adjustable ballast tank from which the ballast water has been pumped out to the adjustable ballast tank that needs to be injected with ballast water until a balance is reached between the amount of ballast water at the bottom of the fan column and the two non-fan columns.

[0018] Compared with the prior art, the present invention has the following beneficial effects: (I) The present invention discloses a wet ring network pressure-discharge loading system for a floating wind turbine foundation, comprising a pressure-discharge loading wet ring network, the pressure-discharge loading wet ring network comprising a control pipeline, a ballast pump and a first interface, a second interface, and a third interface are arranged on the control pipeline, wherein the ballast pump is equipped with a plurality of control valves, and the one-way communication between the first interface and the second interface, between the first interface and the third interface, or between the second interface and the third interface can be controlled by the ballast pump and the plurality of control valves; a first adjustable ballast tank, a second adjustable ballast tank, a third adjustable ballast tank are arranged at the bottom of a wind turbine column and two non-wind turbine columns, respectively. The first interface, the second interface and the third interface are respectively arranged on the first adjustable ballast tank, the second adjustable ballast tank and the third adjustable ballast tank; when the posture of the floating wind turbine foundation needs to be adjusted, the ballast water in the adjustable ballast tank of the column with more water volume is transferred from the first adjustable ballast tank, the second adjustable ballast tank and the third adjustable ballast tank to the adjustable ballast tank of the column with less water volume through a ballast pump and a plurality of control valves of the control pipeline, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, maintain the balance between the ballast water volume at the bottom of one wind turbine column and the two non-wind turbine columns, and realize the adjustment of the posture of the floating wind turbine foundation.

[0019] (ii) The present invention discloses a wet ring network ballast loading system for a floating wind turbine foundation. Since the ballast loading wet ring network is immersed in three adjustable ballast tanks, the ballast water inlet and the ballast water outlet are both lower than the ballast water level of the adjustable ballast tanks. Therefore, there is no need to set up multiple ballast pumps to lift the ballast water into the ballast loading wet ring network.

[0020] (III) The present invention discloses a method for discharging ballast water by using a wet ring network for a floating wind turbine foundation. The ballast water can be transferred among three adjustable ballast tanks by using one ballast pump. The ballast water in the adjustable ballast tank of a column with a large amount of water can be transferred to the adjustable ballast tank of a column with a small amount of water, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, maintain the balance between the ballast water volume at the bottom of one wind turbine column and two non-wind turbine columns, and adjust the posture of the floating wind turbine foundation. This method not only realizes the active discharging of the floating wind turbine by using a wet ring network, but also reduces the number of ballast pumps, thereby reducing equipment investment and maintenance costs.

[0021] (IV) The present invention discloses a wet ring network pressure discharge method for a floating wind turbine foundation, which can realize the mutual transfer of ballast water among three columns, without the need to frequently extract new seawater for load adjustment, thus saving energy. Compared with the wet ring network active pressure discharge system, the wet ring network only needs one ballast pump to realize the transfer of ballast water among three columns. This saves investment costs and reduces the equipment failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a top view of the wet ring network pressure discharge system of the floating wind turbine foundation provided by Example 1 of the present invention; Figure 2 It is a side view of a wind turbine column and a non-wind turbine column of a 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 another non-wind turbine column of a floating wind turbine foundation provided in Example 1 of the present invention; Figure 4 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 5 It is a schematic diagram of a compression-discharge wet-type ring network provided in Example 1 of the present invention without a control pipeline, an input pipeline and an output pipeline; Figure 6 is Figure 5 Add a schematic diagram of the control pipeline on the basis of Figure 7 is Figure 6 Schematic diagram of adding input pipes and output pipes on the basis of and docking with three adjustable ballast tanks respectively.

[0023] Description of reference numerals: 1-floating tank; 21- fan column, 22- non-fan column, 23- diagonal brace; 3-Horizontal support frame, 40-permanent ballast tank, 41-first adjustable ballast tank, 42-second adjustable ballast tank, 43-third adjustable ballast tank; 5-ballast water discharge wet ring network, 51-ballast water inlet, 52-ballast water outlet; 6- Ballast pump; 71-input pipeline, 72-output pipeline; 81-first branch, 82-second branch, 83-third branch, 84-fourth branch, 85-fifth branch; Ⅰ-first interface, Ⅱ-second interface, Ⅲ-third interface; M1-upper node, M2-lower node, M3-left node, M4-right node, M5-fifth node, M6-sixth node, M7-seventh node; A1-first control valve, A2-second control valve, A3-third control valve, B1-fourth control valve, B2-fifth control valve, B3-sixth control valve, B4-seventh control valve, B5-eighth control valve, B6-ninth control valve, P1-tenth control valve, P2-eleventh control valve, P3-twelfth control valve; IN-input control valve, OUT-output control valve. DETAILED DESCRIPTION

[0024] 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 in order 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.

[0025] The active ballast water discharge system injects or discharges ballast water into or out of the ballast tanks installed in the hull to obtain the stability of the platform under various working conditions. In addition, it can restore the platform to a safe draft state in the event of a tank damage. It is a key system to ensure the safe operation of floating wind turbines. At present, the active ballast water discharge system is divided into two types: wet and dry systems. The difference is that the wet ballast water ring network is immersed in ballast water, and the dry ballast water ring network is located in the upper steel structure of the base of the floating wind turbine. When ballast water needs to be transferred from each compartment, a ballast pump is used to pump the ballast water into the ring network and then inject it into other ballast tanks.

[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, and the inspection and repair requires divers to dive for operation, which easily causes difficulties in the inspection and repair, the present invention discloses a wet ring network pressure-discharge load system for a floating wind turbine foundation, including a pressure-discharge load wet ring network, the pressure-discharge load wet ring network includes a control pipeline, and a ballast pump and a first interface, a second interface, and a third interface are arranged on the control pipeline, wherein the ballast pump is equipped with a plurality of control valves, and the one-way connection between the first interface and the second interface or between the first interface and the third interface or between the second interface and the third interface can be controlled respectively by a ballast pump and a plurality of control valves; a wind turbine The bottom of the column and the two non-wind turbine columns are respectively provided with a first adjustable ballast tank, a second adjustable ballast tank, and a third adjustable ballast tank, and the first interface, the second interface, and the third interface are respectively provided on the first adjustable ballast tank, the second adjustable ballast tank, and the third adjustable ballast tank; when it is necessary to adjust the posture of the floating wind turbine foundation, the ballast water in the adjustable ballast tank of the column with more water volume is transferred from the first adjustable ballast tank, the second adjustable ballast tank, and the third adjustable ballast tank to the adjustable ballast tank of the column with less water volume through a ballast pump and a plurality of control valves of the control pipeline, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, maintain the balance between the ballast water volume at the bottom of one wind turbine column and the two non-wind turbine columns, and realize the adjustment of the posture of the floating wind turbine foundation.

[0027] Example 1: A wet ring network pressure discharge system for a floating wind turbine foundation Embodiment 1 of the present invention provides a wet ring network pressure discharge system for a floating wind turbine foundation, and its structure is described in detail below with reference to the accompanying drawings.

[0028] Referring to the figure, the wet ring network pressure discharge system of the floating wind turbine foundation is arranged on a pontoon 1, including a wind turbine column 21, two non-wind turbine columns 22, and a horizontal support frame 3. The pontoon 1 and the horizontal support frame 3 are respectively arranged at the bottom and top of the wind turbine column 21 and the two non-wind turbine columns 22; the three columns are connected into a whole through the horizontal support frame 3 and the pontoon 1. The bottom of a wind turbine column 21 and two non-wind turbine columns 22 are respectively provided with a first adjustable ballast tank 41, a second adjustable ballast tank 42, and a third adjustable ballast tank 43.

[0029] The wet ring network pressure-discharging system of the floating wind turbine foundation includes three columns in total, and the floating wind turbine tower is offset on the wind turbine column 21 .

[0030] Specifically, one fan column 21 and two non-fan columns 22 are distributed in a triangular shape, and their bottoms are all set on the pontoon 1; the horizontal support frame 3 is triangular, and the three corners of the horizontal support frame 3 are respectively set on the top of the fan column 21 and the two non-fan columns 22.

[0031] More specifically, the horizontal support frame 3 includes three horizontal support rods, both ends of which are respectively arranged on the fan column 21 or the non-fan column 22, and the three horizontal support rods are connected to each other in pairs to form the horizontal support frame 3, and the three horizontal support rods are located on the same horizontal plane and are connected end to end in sequence to form a tripod. 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 connected by a horizontal support rod, respectively, and the three horizontal support rods are connected in pairs to form the horizontal support frame 3.

[0032] In order to enhance stability, the fan column 21 and the two non-fan columns 22 are respectively provided with an oblique brace 23 , the top end of the oblique brace 23 is arranged on the fan column 21 or the non-fan column 22 , and the bottom end of the oblique brace 23 is arranged on the buoyancy box 1 .

[0033] Furthermore, the wet ring network ballast system of the floating wind turbine foundation also includes eight permanent ballast tanks 40 , wherein six permanent ballast tanks 40 are arranged inside the pontoon 1 , and two are arranged at the bottom of two non-wind turbine columns 22 .

[0034] Specifically, 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 rods of the horizontal support frame 3, and a permanent ballast tank 40 is respectively provided at both ends of each transverse floating beam. A total of six permanent ballast tanks 40 are provided for the three transverse floating beams, and a permanent ballast tank 40 is respectively provided at the bottom of the two non-wind turbine columns 22.

[0035] A ballast pump is installed in the wind turbine tower cabin. In order to realize the transfer of ballast water among three temporary ballast tanks through one ballast pump and multiple electric control valves, a ballast discharge wet ring network 5 is installed on the buoy 1. The ballast-discharging wet ring network 5 includes a control pipeline, on which a ballast pump 6 and a first interface Ⅰ, a second interface Ⅱ, and a third interface Ⅲ are arranged. The first interface I, the second interface II, and the third interface III are respectively arranged on the first adjustable ballast tank 41, the second adjustable ballast tank 42, and the third adjustable ballast tank 43; The ballast pump 6 is equipped with a plurality of control valves, and the one-way communication between the first interface I and the second interface II or between the first interface I and the third interface III or between the second interface II and the third interface III can be controlled respectively through the ballast pump 6 and the plurality of control valves.

[0036] When the attitude of the floating wind turbine foundation needs to be adjusted, the ballast water is transferred among the first adjustable ballast tank 41, the second adjustable ballast tank 42, and the third adjustable ballast tank 43 through a ballast pump 6 and a plurality of control valves in the control pipeline, and 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, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, maintain the balance between the ballast water volume at the bottom of one wind turbine column 21 and two non-wind turbine columns 22, and realize the adjustment of the attitude of the floating wind turbine foundation.

[0037] Among them, there are eight permanent ballast tanks 40, plus three adjustable ballast tanks, namely the first adjustable ballast tank 41, the second adjustable ballast tank 42, and the third adjustable ballast tank 43. The wet ring network ballast discharge system of the floating wind turbine foundation is equipped with a total of 11 ballast tanks.

[0038] Specifically, the control pipeline includes a first branch 81, a second branch 82, and a third branch 83. The first interface I and the second interface II are connected via a first branch 81, and a first control valve A1 is provided on the first branch 81; The first interface I and the third interface III are connected via a second branch 82, and a second control valve A2 is provided on the second branch 82; The second interface II and the third interface III are connected via a third branch 83 , and a third control valve A3 is disposed on the third branch 83 .

[0039] Furthermore, the control pipeline also includes a fourth branch 84 and a fifth branch 85. The upper node M1 and the lower node M2 ​​of the fourth branch 84 are respectively arranged on the first branch 81 and the second branch 82, and the fourth branch 84 is connected in parallel with the third branch 83; The left end node M3 and the right end node M4 of the fifth branch 85 are respectively arranged on the fourth branch 84 and the second branch 82, and the second control valve A2 is located on the second branch 82 between the lower end node M2 ​​and the right end node M4; The ballast pump 6 is arranged on the fifth branch 85, and the fifth branch 85 on both sides of the ballast pump 6 is respectively provided with a fourth control valve B1 and a fifth control valve B2, and the ballast pump 6 is a one-way pump, the inlet of the ballast pump 6 faces the fourth control valve B1, and the outlet of the ballast pump 6 faces the fifth control valve B2, so as to ensure that the medium can only flow from the fourth control valve B1 through the ballast pump 6 to the fifth control valve B2, but cannot flow in the reverse direction; A sixth control valve B3 and a seventh control valve B4 are respectively provided on the fourth branch 84 between the left end node M3 and the upper end node M1 and on the fourth branch 84 between the left end node M3 and the lower end node M2; An eighth control valve B5 is provided on the first branch 81 connected in parallel with the fifth branch 85, and the eighth control valve B5 is located on the first branch 81 between the upper node M1 and the first interface I; A ninth control valve B6 is provided on the second branch 82 connected in parallel with the fifth branch 85, and the ninth control valve B6 is located on the second branch 82 between the right end node M4 and the first interface I; When it is necessary to transport the medium from the first interface I to the second interface II, only the eighth control valve B5, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, the second control valve A2, and the third control valve A3 are opened, and other valves are closed; when it is necessary to transport the medium from the second interface II to the first interface I, only the first control valve A1, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, and the ninth control valve B6 are opened, and other valves are closed; When it is necessary to transport the medium from the first interface I to the third interface III, only the eighth control valve B5, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, and the second control valve A2 are opened and other valves are closed; when it is necessary to transport the medium from the third interface III to the first interface I, only the seventh control valve B4, the fourth control valve B1, the fifth control valve B2, and the ninth control valve B6 are opened and other valves are closed; When it is necessary to transport the medium from the second interface II to the third interface III, only the first control valve A1, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, the second control valve A2 are opened and the other valves are closed; when it is necessary to transport the medium from the third interface III to the second interface II, only the seventh control valve B4, the fourth control valve B1, the fifth control valve B2, the ninth control valve B6, the first control valve A1 are opened and the other valves are closed.

[0040] In order to facilitate the control of the ballast water flowing out or flowing in from the first interface I, the second interface II and the third interface III respectively, a tenth control valve P1 is provided at the docking point of the first interface I and the first adjustable ballast tank 41, an eleventh control valve P2 is provided at the docking point of the second interface II and the second adjustable ballast tank 42, and a twelfth control valve P3 is provided at the docking point of the third interface III and the third adjustable ballast tank 43.

[0041] In order to input water source into the ballast-discharge wet loop network 5, the ballast-discharge wet loop network 5 comprises a ballast water inlet 51, and the ballast water inlet 51 is lower than the ballast water level of the adjustable ballast tank.

[0042] The intersection of the first branch 81 and the second branch 82 is a fifth node M5. The first branch 81 between the fifth node M5 and the fifth control valve B2 is provided with a sixth node M6. The sixth node M6 is connected to the ballast water inlet 51 through an input pipe 71. The input pipe 71 is provided with an input control valve IN. When the input control valve IN and the tenth control valve P1 are opened and the other valves are closed, seawater enters the first adjustable ballast tank 41; When the input control valve IN, the eighth control valve B5, the first control valve A1, and the eleventh control valve P2 are opened and the other valves are closed, seawater enters the second adjustable ballast tank 42; When the input control valve IN, the eighth control valve B5 , the first control valve A1 , the third control valve A3 , and the twelfth control valve P3 are opened and other valves are closed, seawater enters the third adjustable ballast tank 43 .

[0043] In order to discharge ballast water from the ballast discharge wet loop network 5, the ballast discharge wet loop network 5 comprises a ballast water outlet 52, and the ballast water outlet 52 is lower than the ballast water level of the adjustable ballast tank.

[0044] A seventh node M7 is provided on the fifth branch 85 between the right end node M4 and the fifth control valve B2. The seventh node M7 is connected to the ballast water outlet 52 through an output pipe 72. An output control valve OUT is provided on the output pipe 72. When the ninth control valve B6 and the second control valve A2 are closed and the fifth control valve B2 and the output control valve OUT are opened, the medium flowing out of the outlet of the ballast pump 6 can be discharged through the ballast water outlet 52 .

[0045] In order to strengthen the control of the pressure-discharge wet-type ring network 5, the pressure-discharge wet-type ring network 5 is also equipped with a controller, and the first control valve A1, the second control valve A2, the third control valve A3, the fourth control valve B1, the fifth control valve B2, the sixth control valve B3, the seventh control valve B4, the eighth control valve B5, the ninth control valve B6, the tenth control valve P1, the eleventh control valve P2 and the twelfth control valve P3 are all electrically controlled valves; The ballast pump 6, the first control valve A1, the second control valve A2, the third control valve A3, the fourth control valve B1, the fifth control valve B2, the sixth control valve B3, the seventh control valve B4, the eighth control valve B5, the ninth control valve B6, the tenth control valve P1, the eleventh control valve P2 and the twelfth control valve P3 are all connected to the controller.

[0046] Example 2: A wet ring network active ballasting method for a floating wind turbine foundation Embodiment 2 of the present invention provides a method for discharging a load through a wet ring network of a floating wind turbine foundation, using the wet ring network discharging load system of a floating wind turbine foundation provided in Embodiment 1, and the method comprises the following steps: Step S1: 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 that need to be injected with ballast water and the adjustable ballast tanks from which ballast water is pumped out are determined in the adjustable ballast tanks of the fan column 21 and the two non-fan columns 22, wherein the adjustable ballast tanks with less ballast water at the bottom of the column are the adjustable ballast tanks that need to be injected with ballast water, and the adjustable ballast tanks of the columns with more ballast water are the adjustable ballast tanks from which ballast water is pumped out; Step S2: after 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, it is determined whether the ballast water in the adjustable ballast tank of the column with less water is sufficient to maintain the balance between the ballast water volume at the bottom of one fan column 21 and two non-fan columns 22. If yes, the ballast water in the adjustable ballast tank from which ballast water is pumped out is transferred to the adjustable ballast tank that needs to be filled with ballast water. The specific steps are as follows: When it is necessary to transfer ballast water from the first adjustable ballast tank 41 to the second adjustable ballast tank 42, only the tenth control valve P1, the eighth control valve B5, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, the second control valve A2, the third control valve A3 and the eleventh control valve P2 are opened and the other valves are closed; When it is necessary to transfer ballast water from the second adjustable ballast tank 42 to the first adjustable ballast tank 41, only the eleventh control valve P2, the first control valve A1, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, the ninth control valve B6 and the tenth control valve P1 are opened and the other valves are closed; When it is necessary to transfer ballast water from the first adjustable ballast tank 41 to the third adjustable ballast tank 43, only the tenth control valve P1, the eighth control valve B5, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, the second control valve A2 and the twelfth control valve P3 are opened and the other valves are closed; When it is necessary to transfer ballast water from the third adjustable ballast tank 43 to the first adjustable ballast tank 41, only the twelfth control valve P3, the seventh control valve B4, the fourth control valve B1, the fifth control valve B2, the ninth control valve B6 and the tenth control valve P1 are opened and the other valves are closed; When it is necessary to transfer ballast water from the second adjustable ballast tank 42 to the third adjustable ballast tank 43, only the eleventh control valve P2, the first control valve A1, the sixth control valve B3, the fourth control valve B1, the fifth control valve B2, the second control valve A2 and the twelfth control valve P3 are opened and the other valves are closed; When it is necessary to deliver ballast water from the third adjustable ballast tank 43 to the second interface II, only the twelfth control valve P3, the seventh control valve B4, the fourth control valve B1, the fifth control valve B2, the ninth control valve B6, the first control valve A1 and the eleventh control valve P2 are opened and the other valves are closed; If 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 in the adjustable ballast tank of the column with less water is still insufficient to maintain the balance between the ballast water volume at the bottom of one fan column 21 and two non-fan columns 22, then the input control valve IN is opened to directly inject seawater into the adjustable ballast tank that needs to be injected with ballast water. The specific steps are as follows: When the adjustable ballast tank that needs to be injected with ballast water is the first adjustable ballast tank 41, the input control valve IN and the tenth control valve P1 are opened and other valves are closed, and seawater enters the first adjustable ballast tank 41; When the adjustable ballast tank that needs to be injected with ballast water is the second adjustable ballast tank 42, the input control valve IN, the eighth control valve B5, the first control valve A1, and the eleventh control valve P2 are opened and other valves are closed, and seawater enters the second adjustable ballast tank 42; When the adjustable ballast tank that needs to be injected with ballast water is the third adjustable ballast tank 43, the input control valve IN, the eighth control valve B5, the first control valve A1, the third control valve A3, the twelfth control valve P3 are opened and other valves are closed, and seawater enters the third adjustable ballast tank 43; If after opening the input control valve IN and directly injecting seawater into the adjustable ballast tank that needs to be injected with ballast water, the amount of ballast water at the bottom of one fan column 21 and the two non-fan columns 22 still cannot be balanced, the steps of transferring the ballast water from the adjustable ballast tank from which the ballast water is pumped out to the adjustable ballast tank that needs to be injected with ballast water are repeated until a balance is reached between the amount of ballast water at the bottom of the fan column 21 and the two non-fan columns 22.

[0047] The initial state refers to the state of the floating wind turbine foundation just after it is launched into water.

[0048] After the wind turbine is towed into place, the temporary ballast pump outside the tower is connected to the ballast and discharge wet ring network through a flange to fill water into the permanent ballast tank and the temporary ballast tank. After the water filling is completed, the water volume in the permanent ballast tank will no longer be adjusted, and the ballast water in the temporary ballast tank can be allocated through the ballast and discharge wet ring network.

[0049] The wet ballast ring net is connected to three temporary ballast tanks through the permanent ballast tank at the bottom of the pontoon, and the wet ballast ring net is immersed in the ballast water.

[0050] 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 wet type ring network pressure discharging system for a floating wind turbine foundation, arranged on a pontoon (1), comprising a wind turbine column (21) and two non-wind turbine columns (22), and a horizontal support frame (3), wherein the pontoon (1) and the horizontal support frame (3) are arranged at the bottom and top of the wind turbine column (21) and the two non-wind turbine columns (22), respectively. It is characterized in that A first adjustable ballast tank (41), a second adjustable ballast tank (42), and a third adjustable ballast tank (43) are respectively disposed at the bottom of one of the fan columns (21) and the two non-fan columns (22); The buoyancy box (1) is immersed in a non-pressurized wet ring net (5). The ballast-discharge wet-type ring network (5) comprises a control pipeline, on which a ballast pump (6) and a first interface (I), a second interface (II), and a third interface (III) are arranged, wherein the first interface (I), the second interface (II), and the third interface (III) are arranged on a first adjustable ballast tank (41), a second adjustable ballast tank (42), and a third adjustable ballast tank (43), respectively; the ballast pump (6) is provided with a plurality of control valves, and the unidirectional communication between the first interface (I) and the second interface (II), between the first interface (I) and the third interface (III), or between the second interface (II) and the third interface (III) can be controlled by the ballast pump (6) and the plurality of control valves; When the attitude of the floating wind turbine foundation needs to be adjusted, a ballast pump (6) and a plurality of control valves in a control pipeline are used to transfer ballast water between the first adjustable ballast tank (41), the second adjustable ballast tank (42), and the third adjustable ballast tank (43), and the ballast water in the adjustable ballast tank of a column with a large amount of water is transferred to the adjustable ballast tank of a column with a small amount of water, so as to adjust the ballast water at the bottom of the floating wind turbine foundation, maintain a balance between the ballast water at the bottom of one wind turbine column (21) and the two non-wind turbine columns (22), and achieve adjustment of the attitude of the floating wind turbine foundation.

2. The system according to claim 1, characterized in that The control pipeline comprises a first branch (81), a second branch (82), and a third branch (83). The first interface (I) and the second interface (II) are connected via a first branch (81), and a first control valve (A1) is provided on the first branch (81); The first interface (I) and the third interface (III) are connected via a second branch (82), and a second control valve (A2) is provided on the second branch (82); The second interface (II) and the third interface (III) are connected via a third branch (83), and a third control valve (A3) is provided on the third branch (83).

3. The system according to claim 2, characterized in that The control pipeline further includes a fourth branch (84) and a fifth branch (85). The upper node (M1) and the lower node (M2) of the fourth branch (84) are respectively arranged on the first branch (81) and the second branch (82), and the fourth branch (84) is connected in parallel with the third branch (83); The left end node (M3) and the right end node (M4) of the fifth branch (85) are respectively arranged on the fourth branch (84) and the second branch (82), and the second control valve (A2) is located on the second branch (82) between the lower end node (M2) and the right end node (M4); The ballast pump (6) is arranged on the fifth branch (85), and a fourth control valve (B1) and a fifth control valve (B2) are respectively arranged on the fifth branch (85) on both sides of the ballast pump (6), and the ballast pump (6) is a one-way pump, with the inlet of the ballast pump (6) facing the fourth control valve (B1) and the outlet of the ballast pump (6) facing the fifth control valve (B2), so as to ensure that the medium can only flow from the fourth control valve (B1) through the ballast pump (6) to the fifth control valve (B2), but cannot flow in the reverse direction; A sixth control valve (B3) and a seventh control valve (B4) are respectively provided on the fourth branch (84) between the left end node (M3) and the upper end node (M1) and on the fourth branch (84) between the left end node (M3) and the lower end node (M2); An eighth control valve (B5) is provided on the first branch (81) connected in parallel with the fifth branch (85), and the eighth control valve (B5) is located on the first branch (81) between the upper node (M1) and the first interface (I); A ninth control valve (B6) is provided on the second branch (82) connected in parallel with the fifth branch (85), and the ninth control valve (B6) is located on the second branch (82) between the right end node (M4) and the first interface (I); When it is necessary to transport the medium from the first interface (I) to the second interface (II), only the eighth control valve (B5), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), the second control valve (A2), and the third control valve (A3) are opened, and the other valves are closed; when it is necessary to transport the medium from the second interface (II) to the first interface (I), only the first control valve (A1), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), and the ninth control valve (B6) are opened, and the other valves are closed; When it is necessary to transport the medium from the first interface (I) to the third interface (III), only the eighth control valve (B5), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), and the second control valve (A2) are opened, and the other valves are closed; when it is necessary to transport the medium from the third interface (III) to the first interface (I), only the seventh control valve (B4), the fourth control valve (B1), the fifth control valve (B2), and the ninth control valve (B6) are opened, and the other valves are closed; When it is necessary to transport the medium from the second interface (II) to the third interface (III), only the first control valve (A1), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), and the second control valve (A2) need to be opened, and the other valves need to be closed; when it is necessary to transport the medium from the third interface (III) to the second interface (II), only the seventh control valve (B4), the fourth control valve (B1), the fifth control valve (B2), the ninth control valve (B6), and the first control valve (A1) need to be opened, and the other valves need to be closed.

4. The system according to claim 3, characterized in that A tenth control valve (P1) is provided at the joint between the first interface (I) and the first adjustable ballast tank (41). An eleventh control valve (P2) is provided at the joint between the second interface (II) and the second adjustable ballast tank (42). A twelfth control valve (P3) is provided at the joint between the third interface (III) and the third adjustable ballast tank (43).

5. The system according to claim 4, characterized in that The ballast water wet ring network (5) comprises a ballast water inlet (51), and the ballast water inlet (51) is lower than the ballast water level of the adjustable ballast tank; The intersection of the first branch (81) and the second branch (82) is a fifth node (M5); a sixth node (M6) is provided on the first branch (81) between the fifth node (M5) and the fifth control valve (B2); the sixth node (M6) is connected to the ballast water inlet (51) via an input pipe (71); and an input control valve (IN) is provided on the input pipe (71); When the input control valve (IN) and the tenth control valve (P1) are opened and the other valves are closed, seawater enters the first adjustable ballast tank (41); When the input control valve (IN), the eighth control valve (B5), the first control valve (A1), and the eleventh control valve (P2) are opened and the other valves are closed, seawater enters the second adjustable ballast tank (42); When the input control valve (IN), the eighth control valve (B5), the first control valve (A1), the third control valve (A3), and the twelfth control valve (P3) are opened and the other valves are closed, seawater enters the third adjustable ballast tank (43).

6. The system according to claim 1, characterized in that The ballast-discharging wet-type ring network (5) comprises a ballast water outlet (52), and the ballast water outlet (52) is lower than the ballast water level of the adjustable ballast tank; A seventh node (M7) is provided on the fifth branch (85) between the right end node (M4) and the fifth control valve (B2), the seventh node (M7) is connected to the ballast water outlet (52) via an output pipe (72), and an output control valve (OUT) is provided on the output pipe (72); When the ninth control valve (B6) and the second control valve (A2) are closed and the fifth control valve (B2) and the output control valve (OUT) are opened, the medium flowing out of the outlet of the ballast pump (6) can be discharged through the ballast water outlet (52).

7. The system according to claim 5, characterized in that The pressure-discharge wet-type ring network (5) is also equipped with a controller. The first control valve (A1), the second control valve (A2), the third control valve (A3), the fourth control valve (B1), the fifth control valve (B2), the sixth control valve (B3), the seventh control valve (B4), the eighth control valve (B5), the ninth control valve (B6), the tenth control valve (P1), the eleventh control valve (P2) and the twelfth control valve (P3) are all electrically controlled valves; The ballast pump (6), the first control valve (A1), the second control valve (A2), the third control valve (A3), the fourth control valve (B1), the fifth control valve (B2), the sixth control valve (B3), the seventh control valve (B4), the eighth control valve (B5), the ninth control valve (B6), the tenth control valve (P1), the eleventh control valve (P2) and the twelfth control valve (P3) are all connected to the controller.

8. The system 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 horizontal support frame (3) is in the shape of a triangle, and the three corners of the horizontal support frame (3) are respectively arranged on the top of the fan column (21) and the two non-fan columns (22); The horizontal support frame (3) comprises three horizontal support rods, the three horizontal support rods are connected to each other in pairs to form the horizontal support frame (3), 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 via a horizontal support rod, and the three horizontal support rods are connected in pairs to form the horizontal support frame (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).

9. The system according to claim 8, characterized in that Also included are eight permanent ballast tanks (40), 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 the three horizontal support rods of the horizontal support frame (3), and each of the two ends of each transverse floating beam is provided with a permanent ballast tank (40), and the three transverse floating beams are provided with a total of six permanent ballast tanks (40), and the six permanent ballast tanks (40) are all arranged inside the pontoon (1); A permanent ballast tank (40) is respectively provided at the bottom of the two non-blower columns (22).

10. A wet ring network pressure discharging method for a floating wind turbine foundation, using the system according to any one of claims 1 to 9, characterized in that: include: Step S1: 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 of the fan column (21) and the two non-fan columns (22) are determined to be adjustable ballast tanks that need to be injected with ballast water and adjustable ballast tanks from which ballast water is to be pumped out, wherein the adjustable ballast tanks with less ballast water at the bottom of the column are the adjustable ballast tanks that need to be injected with ballast water, and the adjustable ballast tanks of the column with more ballast water are the adjustable ballast tanks from which ballast water is to be pumped out; Step S2: after 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, it is determined whether the ballast water in the adjustable ballast tank of the column with less water is sufficient to maintain a balance between the ballast water volume at the bottom of one of the fan columns (21) and the two non-fan columns (22). If yes, the ballast water in the adjustable ballast tank from which the ballast water is pumped out is transferred to the adjustable ballast tank that needs to be filled with ballast water. The specific steps are as follows: When it is necessary to transfer ballast water from the first adjustable ballast tank (41) to the second adjustable ballast tank (42), only the tenth control valve (P1), the eighth control valve (B5), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), the second control valve (A2), the third control valve (A3) and the eleventh control valve (P2) need to be opened, and the other valves need to be closed; When it is necessary to transfer ballast water from the second adjustable ballast tank (42) to the first adjustable ballast tank (41), only the eleventh control valve (P2), the first control valve (A1), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), the ninth control valve (B6) and the tenth control valve (P1) need to be opened, and the other valves need to be closed; When it is necessary to transfer ballast water from the first adjustable ballast tank (41) to the third adjustable ballast tank (43), only the tenth control valve (P1), the eighth control valve (B5), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), the second control valve (A2) and the twelfth control valve (P3) need to be opened, and the other valves need to be closed; When it is necessary to transfer ballast water from the third adjustable ballast tank (43) to the first adjustable ballast tank (41), only the twelfth control valve (P3), the seventh control valve (B4), the fourth control valve (B1), the fifth control valve (B2), the ninth control valve (B6) and the tenth control valve (P1) need to be opened, and the other valves need to be closed; When it is necessary to transfer ballast water from the second adjustable ballast tank (42) to the third adjustable ballast tank (43), only the eleventh control valve (P2), the first control valve (A1), the sixth control valve (B3), the fourth control valve (B1), the fifth control valve (B2), the second control valve (A2) and the twelfth control valve (P3) need to be opened, and the other valves need to be closed; When it is necessary to transfer ballast water from the third adjustable ballast tank (43) to the second interface (II), only the twelfth control valve (P3), the seventh control valve (B4), the fourth control valve (B1), the fifth control valve (B2), the ninth control valve (B6), the first control valve (A1) and the eleventh control valve (P2) need to be opened and the other valves need to be closed; If, after 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, the ballast water in the adjustable ballast tank of the column with less water is still insufficient 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), the input control valve (IN) is opened to directly inject seawater into the adjustable ballast tank to which ballast water needs to be injected, and the specific steps are as follows: When the adjustable ballast tank that needs to be injected with ballast water is the first adjustable ballast tank (41), the input control valve (IN) and the tenth control valve (P1) are opened and other valves are closed, so that seawater enters the first adjustable ballast tank (41); When the adjustable ballast tank that needs to be injected with ballast water is the second adjustable ballast tank (42), the input control valve (IN), the eighth control valve (B5), the first control valve (A1), and the eleventh control valve (P2) are opened and the other valves are closed, so that seawater enters the second adjustable ballast tank (42); When the adjustable ballast tank that needs to be injected with ballast water is the third adjustable ballast tank (43), the input control valve (IN), the eighth control valve (B5), the first control valve (A1), the third control valve (A3), and the twelfth control valve (P3) are opened and the other valves are closed, so that seawater enters the third adjustable ballast tank (43); If, after the input control valve (IN) is opened and seawater is directly injected into the adjustable ballast tank to be injected with ballast water, the amount of ballast water at the bottom of one of the fan columns (21) and the two non-fan columns (22) still cannot reach a balance, the step of transferring the ballast water from the adjustable ballast tank from which ballast water has been pumped out to the adjustable ballast tank to be injected with ballast water is repeated until a balance is reached between the amount of ballast water at the bottom of the fan column (21) and the two non-fan columns (22).

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