Flexible connection floating type wind power foundation structure and method

Abstract

The invention relates to the technical field of offshore new energy, in particular to a flexibly-connected floating type wind power foundation structure and method.The flexibly-connected floating type wind power foundation structure comprises a center buoy and three external buoys, the three external buoys are evenly arranged around the center buoy, the three external buoys are connected with the center buoy through multi-stage flexible connecting components, and the multi-stage flexible connecting components are connected with the center buoy. The three external buoys are connected through a supporting truss, ballast tanks, equipment tanks and fresh water tanks are evenly arranged in the center buoy and the three external buoys, anchoring systems are arranged on the three external buoys, and an adjusting unit is arranged at the lower end of each external buoy. The central buoy and the three external buoys are connected through the multi-stage flexible connecting components and the supporting trusses.

Description

TECHNICAL FIELD

[0001] The present application relates to the offshore new energy technology field, and particularly relates to a flexible connection floating wind power foundation structure and method. BACKGROUND

[0002] Offshore wind energy resources are more abundant than land wind energy resources, in order to develop offshore wind energy resources, countries around the world have begun to develop offshore wind power technology. Offshore wind power development is divided into nearshore and deep sea areas. The nearshore area mostly uses fixed foundations, such as single pile foundations and gravity foundations; and with the development of offshore wind power to deep sea, in the sea area with a water depth of 50-200 meters, the floating foundation has greater advantages. China has abundant offshore wind resources, and the development of offshore wind power is an important part of China's new energy strategy. Offshore wind power technology represents the highest level of today's wind power technology, so developing offshore wind power technology and researching and developing new offshore wind power floating foundation structures with high reliability and low cost has important strategic significance. SUMMARY

[0003] The present application relates to the offshore new energy technology field, and particularly relates to a flexible connection floating wind power foundation structure and method.

[0004] In order to achieve the above-mentioned purpose, the present application provides a flexible connection floating wind power foundation structure, which comprises a center float and three external floats, the center float is uniformly provided with three external floats around, the three external floats are connected with the center float by a multi-stage flexible connection member, and the three external floats are connected by a support truss, the center float and the three external floats are uniformly provided with ballast tanks, equipment cabins and fresh water tanks inside, the three external floats are provided with anchor systems, and the lower end of each external float is provided with an adjusting unit.

[0005] The breeding system comprises a mounting frame, a breeding net cage, an automatic feeder and a cleaning assembly, the mounting frame is detachably connected to the lower end of the external buoy, the breeding net cage is fixedly connected to the lower end of the mounting frame, the automatic feeder is fixedly connected to the breeding net cage, and the cleaning assembly comprises two mounting barrels, two push rods, two transmission members and a brush.

[0006] The center buoy is provided with a conical barrel at the bottom and a connecting flange matched with the fan at the top.

[0007] The outer surface of each external buoy is provided with a spiral guide vane.

[0008] The breeding system further comprises a water quality sensor and a weather station, the water quality sensor is fixedly connected to the breeding net cage, and the weather station is fixedly connected to the center buoy.

[0009] The multi-stage flexible connecting member comprises three main flexible cables and six auxiliary buffer cables, the three main flexible cables and the six auxiliary buffer cables are fixedly connected to the center buoy, every two auxiliary buffer cables are symmetrically arranged at one end of the corresponding main flexible cable, each main flexible cable is fixedly connected to one end of the corresponding external buoy, and every two auxiliary buffer cables are fixedly connected to one end of the corresponding external buoy.

[0010] Each adjusting unit comprises three electric push rods, three supporting frames and three adjusting plates, the three electric push rods are detachably connected to the lower end of the external buoy, the three supporting frames are fixedly connected to one end of the external buoy, each adjusting plate is rotatably connected to the lower end of the corresponding supporting frame, and each adjusting plate is detachably connected to the output end of the corresponding electric push rod.

[0011] Each transmission member comprises a servo motor and a transmission shaft, the servo motor is fixedly connected in the mounting barrel, and the transmission shaft is fixedly connected to the output end of the servo motor.

[0012] Each transmission member further comprises a lead screw and a sliding seat, the lead screw is fixedly connected to one end of the transmission shaft, one end of the sliding seat is threadedly connected to the outer surface of the lead screw, and the other end of the sliding seat is slidably connected in the mounting barrel.

[0013] Each mounting barrel is provided with two sliding grooves matched with the sliding seat.

[0014] The application also provides a method for using the floating wind power foundation structure, comprising the following steps.

[0015] S1. First install three external pontoons: lower the external pontoons to the predetermined position by hoisting equipment, start the suction anchor of the anchoring system to implant into the seabed, adjust the length of the anchor chain to keep the external pontoons horizontal; install the support truss, weld the support truss and the three external pontoons to form a triangular frame; install the center pontoon: lower the center pontoon to the center of the triangular frame, connect the center pontoon and the external pontoons through multi-stage flexible connecting members (first fix the main flexible cable, then install the auxiliary buffer cable, and ensure that the cable tension is consistent); adjust the ballast tank: inject seawater into the ballast tank of the center pontoon and the external pontoons, so that the overall draft of the foundation reaches the design value (usually 1 / 2 of the height of the pontoon), monitor the foundation posture through the level meter, and ensure that the horizontal error is ≤0.5°.

[0016] S2. Install the mounting rack: fix the mounting rack to the lower end of the three external pontoons through bolts, and ensure that the mounting rack is horizontal; hang the aquaculture net cage: connect the top buckle of the aquaculture net cage to the mounting rack, hang the counterweight at the bottom, and check the sealing property of the net cage; install the cleaning assembly: weld the mounting cylinder to both sides of the mounting rack, sequentially assemble the transmission member, the push rod and the brush, and debug the servo motor to ensure that the brush can smoothly reciprocate along the surface of the net cage; install the automatic feeder, the water quality sensor and the weather station: connect the power supply and the control module of the equipment, perform power-on debugging, and ensure that the data transmission of each equipment is normal.

[0017] S3. Fix the connecting flange of the wind turbine tower and the center pontoon through the offshore hoisting ship, debug the multi-stage flexible connecting member: simulate the wind and wave load by applying horizontal tension through the winch, detect the stress distribution of the main flexible cable and the auxiliary buffer cable, and ensure that the load transmission is uniform; debug the adjusting unit: start the electric push rod, adjust the angle of the adjusting plate, observe the change of the foundation posture, and ensure that the adjusting unit can quickly respond to the posture deviation; debug the aquaculture system: set the feeding time and the feeding amount of the automatic feeder, start the cleaning assembly, set the reciprocating frequency of the brush, monitor the data of the water quality sensor and the weather station, and ensure that the data is uploaded in real time.

[0018] The flexible connecting floating wind power foundation structure and method can ensure that the three external pontoons are arranged around the center pontoon to form a stable triangular layout, and then the three external pontoons and the center pontoon are connected through the multi-stage flexible connecting member, the three external pontoons are fixed through the anchoring system, the aquaculture net cage is installed below the three external pontoons through the mounting rack, the automatic feeder can feed the bait into the aquaculture net cage, and the two push rods are reciprocally moved in the two mounting cylinders through the two transmission members, so that the brush cleans the aquaculture net cage. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced.

[0020] Figure 1 is a structural schematic view of a flexible connection floating wind power foundation structure and method of the present application.

[0021] Figure 2 is a side view of a flexible connection floating wind power foundation structure and method of the present application.

[0022] Figure 3 is a structural schematic view of a flexible connection floating wind power foundation structure and method of the present application. Figure 2 is an A-A line sectional view of the flexible connection floating wind power foundation structure and method of the present application.

[0023] Figure 4 is a structural schematic view of a flexible connection floating wind power foundation structure and method of the present application. Figure 2 is an enlarged view of the partial structure at B of the flexible connection floating wind power foundation structure and method of the present application.

[0024] Figure 5 is a structural schematic view of an adjusting unit of the present application.

[0025] 1 - central buoy, 101 - conical cylinder, 102 - connecting flange, 2 - external buoy, 201 - support truss, 203 - spiral guide vane, 3 - multi-stage flexible connection member, 301 - main flexible connection, 302 - auxiliary buffer connection, 4 - ballast tank, 5 - equipment cabin, 6 - fresh water tank, 7 - anchoring system, 8 - adjusting unit, 801 - electric push rod, 802 - support frame, 803 - adjusting plate, 9 - aquaculture system, 901 - mounting frame, 902 - aquaculture net cage, 903 - automatic feeder, 904 - water quality sensor, 905 - weather station, 11 - cleaning assembly, 111 - mounting cylinder, 1110 - sliding groove, 112 - push rod, 113 - transmission member, 1131 - servo motor, 1132 - transmission shaft, 1133 - lead screw, 1134 - sliding seat, 114 - brush. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, the embodiments described below by referring to the accompanying drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] Please refer to Figures 1-5 , wherein Figure 1 is a structural schematic view of a flexible connection floating wind power foundation structure and method of the present application, Figure 2 is a side view of a flexible connection floating wind power foundation structure and method of the present application, Figure 3 is a structural schematic view of a flexible connection floating wind power foundation structure and method of the present application. Figure 2 is an A-A line sectional view of the flexible connection floating wind power foundation structure and method of the present application, Figure 4This is the invention Figure 2 Enlarged view of the local structure at point B. Figure 5 This is a schematic diagram of the structure of the adjustment unit of the present invention.

[0028] In this specific embodiment, a central buoy 1 and three external buoys 2 are arranged evenly around the central buoy 1. The three external buoys 2 are connected to the central buoy 1 by a multi-stage flexible connecting member 3 and are connected by a supporting truss 201. Ballast tanks 4, equipment tanks 5, and freshwater tanks 6 are evenly arranged inside the central buoy 1 and the three external buoys 2. Anchoring systems 7 are provided on the three external buoys 2. An adjustment unit 8 is provided at the lower end of each external buoy 2. The anchoring system 7 is provided by prior art CN110294076A. The three external buoys 2 are arranged around the central buoy 1 by the supporting truss 201 to form a stable triangular layout. Then, the three external buoys 2 are connected to the central buoy 1 by the multi-stage flexible connecting member 3 and the three external buoys 2 are fixed by the anchoring system 7.

[0029] The system also includes an aquaculture system 9; the aquaculture system 9 includes a mounting frame 901, an aquaculture cage 902, an automatic feeder 903, and a cleaning assembly 11. The mounting frame 901 is detachably connected to the lower end of the external float 2. The aquaculture cage 902 is fixedly connected to the lower end of the mounting frame 901. The automatic feeder 903 is fixedly connected to the aquaculture cage 902. The cleaning assembly 11 includes two mounting cylinders 111, two push rods 112, two transmission components 113, and a brush 114. The two mounting cylinders 111 are symmetrically and fixedly connected to the mounting frame 901. Each push rod 112 is slidably connected to the corresponding mounting cylinder 111. The transmission component 113 is detachably connected to the corresponding mounting cylinder 111. Each push rod 112 is fixedly connected to the corresponding transmission component 113. The brush 114 is fixedly connected to the lower end of the two push rods 112 and located on the outer surface of the aquaculture net cage 902. The aquaculture net cage 902 is installed below the three external floats 2 by the mounting bracket 901. The automatic feeder 903 can put feed into the aquaculture net cage 902. The two transmission components 113 drive the two push rods 112 to move back and forth in the two mounting cylinders 111 respectively, thereby driving the brush 114 to clean the aquaculture net cage 902.

[0030] The central pontoon 1 has a conical tube 101 at the bottom and a connecting flange 102 at the top for cooperating with the fan. The conical tube 101 can reduce the impact of the wave flow, and the connecting flange 102 is used to connect the fan.

[0031] Secondly, a spiral guide plate 202 is provided on the outer surface of each of the external floats 2. The spiral guide plate 202 is used to reduce the impact force of the lateral wave flow on the external floats 2, and at the same time avoid the generation of surrounding eddies.

[0032] Meanwhile, the aquaculture system 9 also includes a water quality sensor 904 and a weather station 905. The water quality sensor 904 is fixedly connected to the aquaculture cage 902, and the weather station 905 is fixedly connected to the central buoy 1. The water quality sensor 904 is used to monitor the quality of the seawater in the current sea area, and the weather station 905 is used to monitor the weather in the current sea area.

[0033] In addition, the multi-level flexible connection component 3 includes three main flexible cables 301 and six auxiliary buffer cables 302. The three main flexible cables 301 and the six auxiliary buffer cables 302 are all fixedly connected to the central float 1, and every two auxiliary buffer cables 302 are symmetrically arranged at one end of the corresponding main flexible cable 301. Each main flexible cable 301 is fixedly connected to one end of the corresponding outer float 2, and every two auxiliary buffer cables 302 are fixedly connected to one end of the corresponding outer float 2. The three outer floats 2 are connected around the central float 1 by the three main flexible cables 301 and the six auxiliary buffer cables 302.

[0034] Furthermore, each adjustment unit 8 includes three electric push rods 801, three support frames 802, and three adjustment plates 803. The three electric push rods 801 are detachably connected to the lower end of the outer float 2, the three support frames 802 are fixedly connected to one end of the outer float 2, and each adjustment plate 803 is rotatably connected to the lower end of the corresponding support frame 802. Each adjustment plate 803 is detachably connected to the output end of the corresponding electric push rod 801. The electric push rods 801 drive the adjustment plates 803 to rotate on the support frames 802, so that the unfolding angle of the adjustment plates 803 is 0°-90°, which can adjust the hydrodynamic damping for waves in different directions.

[0035] Furthermore, each of the transmission components 113 includes a servo motor 1131 and a transmission shaft 1132. The servo motor 1131 is fixedly connected inside the mounting cylinder 111, and the transmission shaft 1132 is fixedly connected to the output end of the servo motor 1131. The servo motor 1131 drives the transmission shaft 1131 to rotate.

[0036] Furthermore, each of the transmission components 113 also includes a lead screw 1133 and a slide block 1134. The lead screw 1133 is fixedly connected to one end of the transmission shaft 1132, and one end of the slide block 1134 is threadedly connected to the outer surface of the lead screw 1133. The other end of the slide block 1134 is slidably connected inside the mounting cylinder 111. The transmission shaft 1131 drives the lead screw 1133 to rotate, and the lead screw 1133 drives the slide block 1134 to slide on the mounting cylinder 111.

[0037] Furthermore, each of the mounting cylinders 111 has two grooves 1110 that mate with the slide block 1134.

[0038] In this embodiment, during actual use, the three external buoys 2 are arranged around the central buoy 1 via the supporting truss 201, forming a stable triangular layout. The three external buoys 2 are connected around the central buoy 1 by three main flexible supports 301 and six auxiliary buffer supports 302. The three external buoys 2 are fixed by the mooring system 7. The aquaculture cage 902 is installed below the three external buoys 2 by the mounting frame 901. The water quality sensor 904 is used to monitor the quality of the seawater in the current sea area, the weather station 905 is used to monitor the weather in the current sea area, and the automatic feeder 903 can... Feed is placed into the aquaculture cage 902. Each of the electric push rods 801 drives the adjusting plate 803 to rotate on the support frame 802, so that the unfolding angle of the adjusting plate 803 is 0°-90°, which can adjust the hydrodynamic damping for waves in different directions. The servo motor 1131 drives the transmission shaft 1131 to rotate, the transmission shaft 1131 drives the lead screw 1133 to rotate, the lead screw 1133 drives the slide block 1134 to slide on the mounting cylinder 111, and the slide block 1134 drives the push rod 112 to move out of the mounting cylinder 111, driving the brush 114 to clean the aquaculture cage 902.

[0039] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A flexible floating wind power foundation structure, characterized in that, It includes a central buoy (1) and three external buoys (2). The three external buoys (2) are evenly arranged around the central buoy (1). The three external buoys (2) are connected to the central buoy (1) by a multi-stage flexible connecting member (3) and the three external buoys (2) are connected by a support truss (201). Ballast tanks (4), equipment tanks (5) and freshwater tanks (6) are evenly arranged inside the central buoy (1) and the three external buoys (2). Anchoring systems (7) are provided on the three external buoys (2). An adjustment unit (8) is provided at the lower end of each external buoy (2).

2. The flexible-connection floating wind power foundation structure as described in claim 1, characterized in that, It also includes an aquaculture system (9); the aquaculture system (9) includes a mounting frame (901), an aquaculture cage (902), an automatic feeder (903), and a cleaning assembly (11). The mounting frame (901) is detachably connected to the lower end of the external float (2). The aquaculture cage (902) is fixedly connected to the lower end of the mounting frame (901). The automatic feeder (903) is fixedly connected to the aquaculture cage (902). The cleaning assembly (11) includes two mounting cylinders (111), two push rods (112), and two transmissions. The two mounting cylinders (111) are symmetrically and fixedly connected to the mounting frame (901), each push rod (112) is slidably connected in the corresponding mounting cylinder (111), each transmission component (113) is detachably connected in the corresponding mounting cylinder (111), each push rod (112) is fixedly connected to the corresponding transmission component (113), and the brush (114) is fixedly connected to the lower end of the two push rods (112) and located on the outer surface of the aquaculture net cage (902).

3. The flexible-connection floating wind power foundation structure as described in claim 2, characterized in that, The central pontoon (1) has a conical tube (101) at the bottom and a connecting flange (102) at the top for use with a fan.

4. The flexible-connection floating wind power foundation structure as described in claim 3, characterized in that, Each of the external pontoons (2) is provided with a spiral guide plate (202) on its outer surface.

5. The flexible-connection floating wind power foundation structure as described in claim 3, characterized in that, The aquaculture system (9) also includes a water quality sensor (904) and a weather station (905). The water quality sensor (904) is fixedly connected to the aquaculture cage (902), and the weather station (905) is fixedly connected to the central float (1).

6. The flexible-connection floating wind power foundation structure as described in claim 4, characterized in that, The multi-level flexible connection component (3) includes three main flexible cables (301) and six auxiliary buffer cables (302). The three main flexible cables (301) and the six auxiliary buffer cables (302) are all fixedly connected to the central buoy (1), and every two auxiliary buffer cables (302) are symmetrically arranged at one end of the corresponding main flexible cable (301). Each main flexible cable (301) is fixedly connected to one end of the corresponding outer buoy (2), and every two auxiliary buffer cables (302) are fixedly connected to one end of the corresponding outer buoy (2).

7. The flexible-connection floating wind power foundation structure as described in claim 5, characterized in that, Each adjustment unit (8) includes three electric push rods (801), three support frames (802), and three adjustment plates (803). The three electric push rods (801) are detachably connected to the lower end of the outer float (2), the three support frames (802) are fixedly connected to one end of the outer float (2), and each adjustment plate (803) is rotatably connected to the lower end of the corresponding support frame (802). Each adjustment plate (803) is detachably connected to the output end of the corresponding electric push rod (801).

8. The flexible-connected floating wind power foundation structure as described in claim 6, characterized in that, Each of the transmission components (113) includes a servo motor (1131) and a drive shaft (1132), wherein the servo motor (1131) is fixedly connected inside the mounting cylinder (111), and the drive shaft (1132) is fixedly connected to the output end of the servo motor (1131).

9. The flexible-connection floating wind power foundation structure as described in claim 7, characterized in that, Each of the transmission components (113) further includes a lead screw (1133) and a slide (1134). The lead screw (1133) is fixedly connected to one end of the transmission shaft (1132), one end of the slide (1134) is threaded to the outer surface of the lead screw (1133), and the other end of the slide (1134) is slidably connected inside the mounting cylinder (111).

10. A method for using a flexible-connected floating wind power foundation structure, characterized in that, Applied to the floating wind power foundation structure as described in any one of claims 1-9, S1. First, install three external pontoons (2): lower the external pontoons to the predetermined position using hoisting equipment, start the suction anchor of the mooring system (7) to implant it into the seabed, and adjust the length of the anchor chain to keep the external pontoons horizontal; install the support truss (201), and weld and fix the support truss to the three external pontoons to form a triangular frame; install the center pontoon (1): lower the center pontoon to the center of the triangular frame, and connect the center pontoon and the external pontoons through the multi-level flexible connecting component (3); adjust the ballast tank (4): inject seawater into the ballast tanks of the center pontoon and the external pontoons to make the overall draft of the foundation reach the design value, and monitor the attitude of the foundation with a level to ensure that the levelness error is ≤0.5°; S2. Install the mounting frame (901): Fix the mounting frame to the lower end of the three external floats with bolts to ensure that the mounting frame is horizontal; Suspend the aquaculture net cage (902): Connect the top buckle of the aquaculture net cage to the mounting frame, suspend the counterweight at the bottom, and check the sealing of the net cage; Install the cleaning components (11): Weld the mounting cylinder (111) to both sides of the mounting frame, and assemble the transmission component (113), push rod (112) and brush (114) in sequence, and debug the servo motor to ensure that the brush can move smoothly back and forth along the surface of the net cage; Install the automatic feeder (903), water quality sensor (904) and weather station (905): Connect the equipment power supply and control module, and perform power-on debugging to ensure that the data transmission of each device is normal; S3. Fix the connecting flange (102) between the wind turbine and the central pontoon using an offshore crane vessel, and debug the multi-stage flexible connection components (3): Apply horizontal tension through a winch to simulate wind and wave loads, detect the force distribution of the main flexible cable (301) and the auxiliary buffer cable, and ensure uniform load transmission; Debug the adjustment unit (8): Start the electric push rod (801), adjust the angle of the adjustment plate (803), observe the changes in the basic posture, and ensure that the adjustment unit can quickly respond to posture deviations; Debug the aquaculture system (9): Set the feeding time and feeding amount of the automatic feeder, start the cleaning component (11), set the reciprocating frequency of the brush (114), monitor the data from the water quality sensor and the weather station, and ensure that the data is uploaded in real time.

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