Pile foundation monitoring system, foundation, wind turbine generator unit, and monitoring method

Abstract

The application relates to a pile foundation monitoring system, a foundation, a wind turbine generator unit and a monitoring method. The pile foundation monitoring system comprises a support component, a transfer component and a detection component. The support component comprises a ring-shaped base body arranged on a pile foundation and a guide rail extending along the circumference of the ring-shaped base body. The transfer component is arranged on the support component and comprises a moving piece and an extension piece. The moving piece is movably connected with the guide rail and can move along the guide rail relative to the ring-shaped base body. The extension piece is connected with the moving piece and can extend and contract along the axial direction of the ring-shaped base body. The detection component is arranged on the side of the extension piece away from the moving piece in the axial direction. The detection component is configured to detect environmental information of the sea area where the pile foundation is located. The application can scan the seabed terrain around the pile foundation as required, and the monitoring effect is good.

Description

Technical Field

[0001] This application relates to the field of wind power technology, and in particular to a pile foundation monitoring system, foundation, wind turbine generator set and monitoring method. Background Technology

[0002] Foundation scour of offshore wind turbines has always been a concern in the wind power industry. To solve the scour problem, it is necessary to analyze the causes and patterns of scour in each wind power project and to conduct regular measurements of the terrain around the foundation.

[0003] Generally, offshore wind turbine foundations are monitored periodically using shipborne sensors to collect environmental information about the entire sea area where the wind farm's foundations are located. This includes information such as the distance from the soil layer to the sensors and the temperature of the sea area where the foundations are located. This allows for monitoring of the seabed topography to assess the erosion of each foundation. However, this periodic shipborne monitoring method is costly, limiting monitoring to only 2-3 times per year due to cost and other factors. It lacks the capability for multiple monitoring sessions and cannot dynamically monitor changes in the seabed topography around the foundations and throughout the entire wind farm, thus affecting the monitoring effectiveness. Summary of the Invention

[0004] This application provides a pile foundation monitoring system, a foundation, a wind turbine generator set, and a monitoring method. The pile foundation monitoring system can scan the seabed topography around the pile foundation as needed, and the monitoring effect is excellent.

[0005] On one hand, according to an embodiment of this application, a pile foundation monitoring system for wind turbines is proposed. The pile foundation monitoring system includes: a support component, including an annular base disposed on the pile foundation and a guide rail extending circumferentially along the annular base; a transfer component disposed on the support component, the transfer component including a movable component and a telescopic component, the movable component being movably connected to the guide rail and capable of moving relative to the annular base along the guide rail, the telescopic component being connected to the movable component and capable of telescoping along the axial direction of the annular base; and a detection component disposed on the side of the telescopic component axially away from the movable component, the detection component being configured to detect environmental information of the sea area where the pile foundation is located.

[0006] According to one aspect of the embodiments of this application, the detection component includes a depth sounder and a water temperature sensor, and the environmental information includes the distance information from the soil layer of the sea area where the pile foundation is located to the depth sounder and the temperature information of the sea area where the pile foundation is located.

[0007] According to one aspect of the embodiments of this application, the depth sounder includes a multibeam echo sounder and / or a singlebeam echo sounder.

[0008] According to one aspect of the embodiments of this application, the pile foundation monitoring system further includes a water ingress sensor and a controller. The water ingress sensor is disposed on the side of the expansion joint that is axially opposite to the moving member. The water ingress sensor is configured to monitor the position information of the detection component, and the controller controls the opening or closing of the water depth detector according to the position information.

[0009] According to one aspect of the embodiments of this application, the moving part includes a driving part and a traveling part, the traveling part is in rolling engagement with a guide rail, and the driving part is connected to the traveling part to drive the traveling part to move relative to the annular base along the guide rail.

[0010] According to one aspect of the embodiments of this application, the transfer component further includes an electromagnetic adsorption component, which is disposed on the movable component and can magnetically adsorb with the annular substrate, so that the movable component moves along the guide rail relative to the annular substrate to a predetermined position and then locks the relative position of the movable component and the annular substrate.

[0011] According to one aspect of the embodiments of this application, the pile foundation monitoring system further includes a cable connection device and a connector. The cable connection device is disposed on the movable part and is capable of obtaining power from the outside. At least one of the transfer part and the detection part is electrically connected to the cable connection device through the connector.

[0012] According to one aspect of the embodiments of this application, the cable connection device includes a protective body and a plurality of terminals. The protective body has a protective cavity, and the plurality of terminals are located in the protective cavity and are capable of obtaining electrical energy from the outside. The connector includes an input terminal and an output terminal. The input terminal is connected to the terminals, and the output terminal protrudes at least partially from the protective cavity of the protective body and is electrically connected to at least one of a transfer component and a detection component.

[0013] According to one aspect of the embodiments of this application, the moving component includes a power adapter module, a data processing module, and a communication module. The power adapter module obtains power from the connector and transmits it to the detection component. The data processing module is configured to store and / or process environmental information. The communication module is configured to send the environmental information to a predetermined location.

[0014] According to one aspect of an embodiment of this application, the telescopic component includes a telescopic cylinder.

[0015] According to one aspect of the embodiments of this application, the telescopic member includes a base, a reel, and a sleeve-type telescopic part. The base is connected to the sleeve-type telescopic part and drives the sleeve-type telescopic part to extend or shorten. The reel is disposed on the base and is used to wind or release a cable electrically connected to the detection component.

[0016] On the other hand, according to an embodiment of this application, a foundation for a wind turbine is proposed, including: a pile foundation, including support piles and a cage disposed on the support piles; the aforementioned pile foundation monitoring system, wherein a ring-shaped base is disposed around the pile foundation and connected to the cage.

[0017] On the other hand, according to an embodiment of this application, a wind turbine generator set is proposed, including the wind turbine foundation described above.

[0018] Furthermore, according to embodiments of this application, a method for monitoring the foundation of the aforementioned wind turbine is proposed, comprising:

[0019] Identify multiple test points distributed along the circumference of the foundation. The multiple test points include a first test point, a last test point, and at least one transition test point located between the first test point and the last test point.

[0020] The control mechanism moves the movable component along the guide rail and sequentially passes through the initial test point, each transition test point, and the final test point; among these...

[0021] At the initial test point, the telescopic component is extended to allow the detection component to extend into the sea area where the wind turbine foundation is located. The detection component is then activated to detect environmental information of the sea area at the initial test point.

[0022] At each transition test point, the telescopic components are kept in an extended state, and the detection components are used to detect the environmental information of the sea area at each transition test point;

[0023] At the tail end test point, after the detection component detects the environmental information of the sea area at the tail end test point, the telescopic component is controlled to shorten so that the detection component moves above the sea level and then the detection component is turned off.

[0024] According to the pile foundation monitoring system, foundation, wind turbine generator set, and monitoring method provided in this application, the pile foundation monitoring system includes a support component, a transfer component, and a detection component. The support component includes an annular base and a guide rail extending circumferentially along the annular base. The pile foundation monitoring system can be connected to the pile foundation through the annular base and always located on the pile foundation. Since the transfer component includes a movable component and a telescopic component, the movable component can be movably connected to the guide rail and move relative to the annular base. The telescopic component can extend and retract along the axial direction of the annular base. The detection component can be used to detect the environmental information of the sea area where the pile foundation is located and is connected to the telescopic component, so that the detection component as a whole can move relative to the transfer component to detect the environmental information of the sea area at different positions of the pile foundation in the circumference of the annular base, so as to provide subsequent detection of seabed topography and check the scour of each foundation. The telescopic component can drive the detection component to move axially, so that when the pile foundation monitoring system is not working, the detection component can be retracted above the sea level to avoid long-term immersion in seawater and being affected by marine organism contamination. When detection is required, the detection component can be sent back into the predetermined seawater depth.

[0025] Furthermore, the pile foundation monitoring system can be continuously located on the pile foundation and monitor it as needed, regardless of the number of monitoring sessions. It is capable of multiple monitoring sessions and can scan the seabed topography around the pile foundation as required, resulting in excellent monitoring performance. Attached Figure Description

[0026] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the basic structure of a wind turbine generator according to an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the structure of a pile foundation monitoring system according to an embodiment of this application;

[0030] Figure 4 This is a top view of a pile foundation monitoring system according to an embodiment of this application;

[0031] Figure 5 yes Figure 3 Cross-sectional view along the AA direction;

[0032] Figure 6 This is a schematic diagram of the structure of a telescopic part according to an embodiment of this application;

[0033] Figure 7 This is a control principle diagram of a method for monitoring the aforementioned wind turbine generator according to one embodiment of this application;

[0034] Figure 8 This is a schematic diagram showing the distribution of each initial test point, each transition test point, and each final test point.

[0035] in:

[0036] 1-Basic;

[0037] 100-Pile Foundation Monitoring System;

[0038] 10-Supporting component; 11-Annular base; 12-Guide rail; 20-Transfer component; 21-Moving component; 211-Traveling part; 212-Communication module;

[0039] 22-Telescopic component; 221-Base; 222-Cable reel; 223-Sleeve-type telescopic part; 23-Electromagnetic adsorption component;

[0040] 30 - Detection component; 31 - Water depth detector; 32 - Water temperature sensor;

[0041] 40 - Water ingress sensor;

[0042] 50 - Cable connection device; 51 - Protective body; 511 - Protective cavity; 52 - Terminal block;

[0043] 60 - Connector; 61 - Input terminal; 62 - Output terminal;

[0044] 200 - Pile foundation; 201 - Support pile; 202 - Cage;

[0045] 2-Tower; 3-Nacelle; 4-Generator; 5-Impeller; 510-Hub; 520-Blade;

[0046] X - circumferential direction; Y - axial direction.

[0047] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0048] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0049] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the pile foundation monitoring system, foundation, wind turbine generator set, and monitoring method of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] Please see Figure 1This application provides a wind turbine generator set, including a foundation 1, a tower 2, a nacelle 3, a generator 4, and a rotor 5. The tower 2 is connected to the foundation 1, the nacelle 3 is located at the top of the tower 2, and the generator 4 is located in the nacelle 3. In some examples, the generator 4 may be located outside the nacelle 3. The rotor 5 includes a hub 510 and a plurality of blades 520 connected to the hub 510. The rotor 5 is connected to the rotor of the generator 4 through its hub 510. When wind power acts on the blades 520, it drives the entire rotor 5 and the rotor of the generator 4 to rotate, thereby meeting the power generation requirements of the wind turbine generator set. Figure 1 This is for illustrative purposes only and is not intended to limit the scope of the invention. In practical applications, the invention is also applicable to wind turbine generator sets with the generator placed in the nacelle.

[0051] Ensuring the stability of the foundation 1 is essential for the safety performance of wind turbine generators. This is especially true for offshore wind turbine generators, which must withstand not only the effects of wind energy but also the impact of seawater, thus requiring even higher safety performance from their foundation 1.

[0052] Please see Figure 2 Therefore, this application embodiment also provides a wind turbine foundation 1, including a pile foundation 200, which is connected to the tower 2.

[0053] Optionally, the pile foundation 200 may include a support pile 201 and a cage 202 disposed on the support pile 201. The pile foundation 200 can be connected to the tower 2 through the support pile 201. The cage 202 can be fitted around the outer periphery of the support pile 201 and connected to the support pile 201 in a fixed or detachable manner.

[0054] Since the soil in the sea area where the pile foundation 200 is located will be eroded by seawater, it is necessary to conduct regular measurements of the terrain around the foundation 1.

[0055] Generally, the foundation 1 of an offshore wind turbine is monitored periodically using shipborne detection components 30 to collect environmental information about the entire sea area where the foundation 1 is located. This includes information such as the distance from the soil layer to the detection component 30 in the sea area where the pile foundation 200 is located, and the temperature information in the sea area where the pile foundation 200 is located. This allows for monitoring of the seabed topography and checking the erosion of each foundation 1. However, this periodic shipborne monitoring method is costly, and due to cost and other factors, it can only be monitored 2-3 times a year. It does not have the conditions for multiple monitoring sessions and cannot dynamically monitor the changes in seabed topography around the foundation 1 and the entire wind farm, thus affecting the monitoring effectiveness.

[0056] To address the aforementioned issues, this application also provides a pile foundation monitoring system 100, which can be used as a standalone product or as a component of the foundation 1 of the aforementioned wind turbine unit. The pile foundation monitoring system 100 can scan the seabed topography surrounding the pile foundation 200 as needed, providing excellent monitoring results.

[0057] To better understand the pile foundation monitoring system 100 provided in the embodiments of this application, the pile foundation monitoring system 100 of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0058] Please see Figure 2 as well as Figure 3 As shown in the embodiment of this application, the pile foundation monitoring system 100 includes a support component 10, a transfer component 20, and a detection component 30. The support component 10 includes an annular base 11 disposed on the pile foundation 200 and a guide rail 12 extending circumferentially along the annular base 11. The transfer component 20 is disposed on the support component 10 and includes a movable component 21 and a telescopic component 22. The movable component 21 is movably connected to the guide rail 12 and can move relative to the annular base 11 along the guide rail 12. The telescopic component 22 is connected to the movable component 21 and can extend and retract along the axial direction Y of the annular base 11. The detection component 30 is disposed on the side of the telescopic component 22 opposite to the movable component 21 in the axial direction Y, and the detection component 30 is configured to detect environmental information of the sea area where the pile foundation 200 is located.

[0059] Optionally, the annular base 11 can be connected to the cage 202 of the pile foundation 200. The connection between the annular base 11 and the cage 202 can be fixed by welding, or it can be connected by a detachable connection method such as fastener fastening.

[0060] Optionally, the guide rail 12 can be a raised track on the annular base 11. Of course, in some examples, it can also be a guide groove formed by removing material from the annular base 11, as long as it can meet the requirements of movable engagement with the transfer component 20.

[0061] Optionally, the extension length of the guide rail 12 in the circumferential X direction of the annular substrate 11 can be set according to the detection range requirements. It can be a full-ring track extending around the circumferential X direction of the annular substrate 11, or it can be an arc track with a notch, as long as the detection range requirements can be guaranteed.

[0062] The pile foundation monitoring system 100 provided in this application embodiment, when used for the foundation 1 of a wind turbine, can be connected to the pile foundation 200 of the foundation 1 via an annular base 11 and always located on the pile foundation 200. Since the transfer component 20 includes a movable component 21 and a telescopic component 22, the movable component 21 can be movably connected to the guide rail 12 and move relative to the annular base 11, and the telescopic component 22 can extend and retract along the axial direction Y of the annular base 11. The detection component 30 can be used to detect the environmental information of the sea area where the pile foundation 200 is located and is connected to the telescopic component 22, so that the detection component 30 as a whole can move relative to the transfer component 20 to detect the environmental information of the sea area at different positions of the pile foundation 200 in the circumferential direction X of the annular base 11, so as to provide subsequent detection of seabed topography and check the scouring of each pile foundation 200, etc.

[0063] The telescopic component 22 can drive the detection component 30 to move along the axial Y direction, so that when the pile foundation monitoring system 100 is not working, the detection component 30 can be retracted to above the sea level to avoid long-term immersion in seawater and being affected by marine organism pollution. When testing is required, the detection component 30 can be sent back into the predetermined seawater depth.

[0064] Furthermore, the pile foundation monitoring system 100 can be continuously located on the pile foundation 200 and monitor it as needed, regardless of the number of monitoring sessions. It is capable of multiple monitoring sessions and can scan the seabed topography around the pile foundation 200 as needed, resulting in excellent monitoring performance.

[0065] Optionally, the annular substrate 11 can be made of steel profiles, which serve as a supporting structural component of the monitoring system and bear the load.

[0066] Optionally, the guide rail 12 can be made of steel plate. Optionally, the guide rail 12 can be fixed in a complete circle on the annular base 11. Optionally, the guide rail 12 can be positioned at the top of the annular base 11 along its own axial direction Y.

[0067] As an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment includes a detection component 30 comprising a water depth detector 31 and a water temperature sensor 32. The environmental information includes the distance information from the soil layer in the sea area where the pile foundation 200 is located to the water depth detector 31 and the temperature information of the sea area where the pile foundation 200 is located.

[0068] By including a depth sounder 31 and a water temperature sensor 32 in the detection component 30, the environmental information includes the distance from the soil layer in the sea area where the pile foundation 200 is located to the depth sounder 31 and the temperature information of the sea area where the pile foundation 200 is located. The temperature information obtained by detecting the water temperature through the water temperature sensor 32 can be used to calculate the sound wave velocity at this time. By calculating the sound wave velocity, the distance information from the soil layer in the sea area where the pile foundation 200 is located to the depth sounder 31 can be accurately obtained, and the distance information in the detection area can be fed back. The topography of the sea area where the pile foundation 200 is located can be effectively obtained to obtain the thickness of the soil layer, erosion conditions, etc.

[0069] As an optional implementation, the depth sounder 31 may include a multibeam echo sounder. A multibeam echo sounder is a device that emits multiple sound waves, which are reflected back after reaching the seabed or an obstacle. The sounder can receive the signals and calculate the distance traveled by the sound waves based on the time of receipt. Because multiple sound waves are emitted simultaneously in a fan shape, the coverage area is larger, resulting in better monitoring performance.

[0070] Of course, since the transfer component 20 can drive the depth sounder 31 to move along the circumferential X direction of the annular base 11, the depth sounder 31 is not limited to a multibeam echo sounder. It can also be a single-beam echo sounder. It can move along the circumferential X direction with the support component 10 to monitor different locations in the sea area where the pile foundation 200 is located, which can also meet the needs of environmental information collection.

[0071] As an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment also includes a water ingress sensor 40 and a controller. The water ingress sensor 40 is disposed on the side of the telescopic member 22 opposite to the moving member 21 in the axial Y direction. The water ingress sensor 40 is configured to monitor the position information of the detection component 30. The controller controls the opening or closing of the water depth detector 31 according to the position information.

[0072] By setting a water ingress sensor 40 and positioning it on the side of the telescopic member 22 opposite to the moving member 21 in the Y-axis direction, the position information of the detection component 30 can be monitored. For example, the water ingress sensor 40 can monitor whether the detection component 30 is in seawater, which facilitates the controller's control of the depth sounder 31 based on the position information. Specifically, when the detection component 30 is in seawater, the controller can turn on the depth sounder 31 to ensure monitoring needs are met. When the detection component 30 is outside the seawater, the controller can turn off the depth sounder 31 to prevent damage caused by it remaining open at sea.

[0073] As an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment may include a moving part 21 that may include a driving part (not shown) and a walking part 211. The walking part 211 is in rolling engagement with the guide rail 12, and the driving part is connected to the walking part 211 to drive the walking part 211 to move relative to the annular base 11 along the guide rail 12.

[0074] The telescopic member 22 can be connected to the walking part 211 of the moving member 21. The moving member 21 adopts the above form, which has a simple structure and can effectively control the walking part 211 to move or stop through the drive part, which is conducive to meeting the positional requirements of the telescopic member 22 and the detection component 30 connected to it.

[0075] Optionally, the walking unit 211 may include a mounting body and walking wheels connected to the mounting body, and the driving unit may drive the walking wheels to rotate so that they move along the guide rail 12.

[0076] Optionally, the drive unit can be a servo motor, which drives the walking unit 211 to move along the guide rail 12.

[0077] Optionally, the drive unit can be connected to the controller for communication, allowing the controller to control the drive unit's opening and closing, as well as its output speed.

[0078] As an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment has a groove on the walking part 211. The shape of the groove matches the shape of the guide rail 12 and cooperates with the guide rail 12. The guide rail 12 extends at least partially into the groove and is movably cooperated with the walking part 211. This can effectively prevent the walking part 211 from separating from the guide rail 12 and ensure the safety performance of the pile foundation monitoring system 100.

[0079] As an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment further includes an electromagnetic adsorption component 23 in the transfer component 20. The electromagnetic adsorption component 23 is disposed on the moving component 21 and can magnetically adsorb with the annular base 11, so that the moving component 21 moves along the guide rail 12 relative to the annular base 11 to a predetermined position and then locks the relative position of the moving component 21 and the annular base 11.

[0080] By incorporating the electromagnetic adsorption component 23, when the moving component 21 moves the detection component 30 to a predetermined position on the annular substrate 11, the electromagnetic adsorption component 23 is energized to generate a magnetic force, enabling it to adhere to the annular substrate 11. This locks the relative position of the moving component 21 and the annular substrate 11, preventing the detection component 30 from shifting due to impacts such as at sea during the detection of environmental information in that area, thus improving the accuracy of the monitoring results. When the detection component 30 needs to move to the next area after completing monitoring in the predetermined area, the electromagnetic adsorption component 23 can be de-energized, causing the magnetic adsorption force between the electromagnetic adsorption component 23 and the annular substrate 11 to disappear. The moving component 21 can then move relative to the annular substrate 11 along the circumferential direction X to the next position for monitoring. This process is repeated until monitoring of each area is completed.

[0081] Please see Figures 3 to 5 As shown, as an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment further includes a cable connection device 50 and a connector 60. The cable connection device 50 is disposed on the movable part 21. The cable connection device 50 can obtain power from the outside. At least one of the transfer part 20 and the detection part 30 is electrically connected to the cable connection device 50 through the connector 60.

[0082] By setting up the cable connection device 50 and the connector 60, and defining their positions, system power supply can be achieved, ensuring the power requirements of each component. In specific implementations, one of the transfer component 20 and the detection component 30 can be electrically connected to the cable connection device 50 through the connector 60. Of course, in some embodiments, both the transfer component 20 and the detection component 30 can be electrically connected to the cable connection device 50 through the connector 60.

[0083] Optionally, the external source mentioned can be an additional energy storage component, or of course, a generator 4. The electrical energy converted by the generator 4 can be connected to the cable connection device 50 via a lead wire, and then transmitted to the components that need power through the cable connection device 50 and the connector 60.

[0084] Optionally, one or more of the following components may be electrically connected to the cable connection device 50 via the connector 60: the drive unit of the transfer component 20, the electromagnetic adsorption component 23, and the depth detector 31, the water temperature sensor 32, and the water inlet sensor 40 of the detection component 30, in order to obtain the corresponding electrical energy.

[0085] Optionally, the cable connector 50 can be connected to the annular base 11. In some alternative examples, the cable connector 50 can be connected to the end of the annular base 11 that is away from the guide rail 12 in the axial Y direction. The cable connector 50 and the annular base 11 can be fixedly connected by adhesive bonding, or they can be detachably connected by fasteners such as bolts.

[0086] As an optional implementation, the pile foundation monitoring system 100 provided in this application embodiment includes a cable connection device 50 comprising a protective body 51 and a plurality of terminals 52. The protective body 51 has a protective cavity 511, and the plurality of terminals 52 are located in the protective cavity 511 and can obtain power from the outside. The connector 60 includes an input terminal 61 and an output terminal 62. The input terminal 61 is connected to the terminals 52, and the output terminal 62 is at least partially protruding from the protective cavity 511 of the protective body 51 and electrically connected to at least one of the transfer component 20 and the detection component 30.

[0087] Optionally, the protective body 51 may be made of insulating material, and its shape is not specifically limited. In some optional examples, the surface of the protective body 51 facing the annular body may be attached to the annular base 11 and connected by means of bonding or other methods.

[0088] Optionally, the multiple terminals 52 may include a unidirectional three-wire system, which may include a live wire terminal, a neutral wire terminal, and a grounding terminal.

[0089] Optionally, the input terminal 61 of the connector 60 is connected to the live wire terminal, neutral wire terminal, and grounding terminal of the plurality of terminals 52, respectively. The number of its output terminals 62 can be set according to requirements, as long as the power acquisition requirements of each component can be met. For example, one or more of the drive unit, electromagnetic adsorption component 23, and detection component 30, such as the water depth detector 31, water temperature sensor 32, and water inlet sensor 40, can be electrically connected to the cable connection device 50 through the output terminal 62 of the connector 60.

[0090] As an optional implementation, the moving part 21 includes a power adapter module (not shown), a data processing module (not shown), and a communication module 212. The power adapter module obtains power from the connector 60 and transmits it to the detection component 30. The data processing module is configured to store and / or process environmental information. The communication module 212 is configured to send the environmental information to a predetermined location.

[0091] By including a power adapter module, a data processing module, and a communication module 212 in the moving component 21, it is possible to facilitate the acquisition of electrical energy of the detection component 30, the storage and / or processing of the collected environmental information, and the transmission of environmental information to the cloud or a dedicated server, thereby optimizing the performance of the pile foundation monitoring system 100.

[0092] Please see Figure 6 As shown, in some optional embodiments, the pile foundation monitoring system 100 provided in the above embodiments of this application includes a telescopic component 22 comprising a base 221, a cable reel 222, and a sleeve-type telescopic part 223. The base 221 is connected to the sleeve-type telescopic part 223 and drives the sleeve-type telescopic part 223 to extend or shorten. The cable reel 222 is disposed on the base 221 and is used to wind or release the cable electrically connected to the detection component 30.

[0093] The telescopic component 22, adopting the aforementioned structure, can meet the telescopic requirements. It can be driven by the base 221 to gradually extend the sleeve-type telescopic part 223, increasing its length in the axial Y direction and causing the detection component 30 to extend into the seawater to a predetermined depth. After detection, the base 221 can drive the sleeve-type telescopic part 223 to gradually shorten its length in the axial Y direction, causing the detection component 30 to retract above the sea surface due to seawater separation. The cable reel 222 allows for control of each cable, releasing the cable when the sleeve-type telescopic part 223 extends and winding and retracting the cable when the sleeve-type telescopic part shortens, avoiding cable entanglement and blockage problems.

[0094] Optionally, the sleeve-type telescopic part 223 may include multiple sleeves, which are coaxially arranged and have gradually decreasing diameters. A rope wheel may be provided on the sleeve, and the sleeves can be connected to each other by a control rope. The base 221 can use the control rope to make the multiple sleeves extend or retract in stages to meet the telescopic function requirements.

[0095] Alternatively, the cable may include control signal lines, power lines, etc.

[0096] It is understood that the telescopic component 22 adopting the above form is only an optional implementation method. In some embodiments, the telescopic component 22 can also be in the form of a telescopic cylinder, which is connected between the transfer component 20 and the detection component 30, and can also meet the position adjustment requirements of the detection component 30 in the axial Y direction.

[0097] The wind turbine foundation 1 provided in this application includes the pile foundation monitoring system 100 provided in the above embodiments. It can monitor the environmental information of the sea area where the pile foundation 200 is located at any time as needed, regardless of the number of monitoring sessions. It has the capability for multiple monitoring sessions, which means that it can scan the seabed topography around the pile foundation 200 as needed, and the monitoring effect is excellent.

[0098] The wind turbine generator provided in this application embodiment, because it includes the foundation 1 of the aforementioned wind turbine generator, can meet the monitoring needs of the seabed topography around the pile foundation 200, promptly assess risks, and improve the safety performance of the wind turbine generator.

[0099] Please see Figures 2 to 8 This application also provides a method for monitoring the foundation 1 of the aforementioned wind turbine, comprising:

[0100] Determine multiple test points distributed along the circumferential direction X of base 1. The multiple test points include the first test point aa, the last test point cc, and at least one transition test point bb located between the first test point aa and the last test point cc.

[0101] The control moving part 21 moves along the guide rail 12 and sequentially passes the first end test point aa, each transition test point bb, and the last end test point cc; wherein...

[0102] At the first test point aa, the telescopic component 22 is extended so that the detection component 30 extends into the sea area where the wind turbine foundation 1 is located. The detection component 30 is then activated to detect the environmental information of the sea area at the first test point aa.

[0103] At each transition test point bb, the telescopic component 22 is kept in an extended state, and the detection component 30 is used to detect the environmental information of the sea area at each transition test point bb.

[0104] At the tail test point cc, after the detection component 30 detects the environmental information of the sea area at the tail test point cc, the telescopic component 22 is controlled to shorten so that the detection component 30 moves above the sea level and the detection component 30 is turned off.

[0105] To better understand the method for monitoring the basic structure 1 of the wind turbine provided in this application embodiment, it will be combined with Figure 7 The control principle diagram shown illustrates the monitoring method.

[0106] The wind turbine generator set of this application embodiment may include a PLC controller. The PLC controller can control the movement of the moving part 21 through a first servo driver, control the extension and retraction of the telescopic part 22 through a second servo driver, and control the winding and unwinding of the reel 222 through a third servo driver. The data processing module, communication module 212, water temperature sensor 32, water inlet sensor 40, and water depth sounder 31 are respectively communicatively connected to the PLC controller.

[0107] Combination Figure 7 as well as Figure 8 As shown, optionally, the number of transition test points bb can be determined according to the pile foundation 200 size of foundation 1. There can be one, two or more. When there are more than two, for clearer understanding, the transition test point set adjacent to the first end test point aa is bb1, and the transition test point set adjacent to the last end test point cc is bbn, where n is greater than or equal to 2.

[0108] Optionally, at the first test point aa, a pulse command can be sent by the PLC controller to control the moving part 21 of the transfer part 20 to move the telescopic part 22 and the detection part 30 as a whole to the first test point aa via the first servo driver.

[0109] Then, the PLC controller sends pulse commands to control the telescopic member 22 through the second servo driver and the cable reel 222 through the third servo driver, so that the telescopic member 22 extends and drives the detection component 30 and the water ingress sensor 40 to extend into the seawater to a predetermined depth, and the cable reel 222 simultaneously releases the cable connected to the detection component 30.

[0110] When the detection component 30 is submerged in seawater, the water ingress sensor 40 sends a water ingress signal to the controller, and the water temperature sensor 32 of the detection component 30 simultaneously feeds back the seawater temperature value. Then, the PLC controller issues a water depth measurement command, and the water depth detector 31 of the detection component 30 begins the scanning operation and transmits back the values, completing the environmental information detection and collection at the first test point aa.

[0111] Optionally, after the environmental information acquisition at the first test point aa is completed, the PLC controller sends a pulse command to control the moving part 21 of the transfer component 20, which in turn moves the telescopic part 22 and the detection part 30 to the transition test point bb1 adjacent to the first test point aa, and collects and detects the environmental information at the transition test point bb1. Then, the moving part 21 is controlled to move the telescopic part 22 and the detection part 30 to the next transition test point bb2 and collects and detects the environmental information until the environmental information detection at the next transition test point bbn is completed.

[0112] After the last transition test point bbn is detected, the control moving part 21 moves to the tail test point cc. At the tail test point cc, after the detection component 30 detects the environmental information of the sea area at the tail test point cc, the PLC controller sends a pulse command, which controls the telescopic part 22 through the second servo driver and the cable reel 222 through the third servo driver. This causes the telescopic part 22 to shorten and move the detection component 30 and the water ingress sensor 40 away from the seawater and above the sea surface, and the detection component 30 is turned off. At the same time, the cable reel 222 winds up and retracts the cable connected to the detection component 30 until it returns to its original state.

[0113] Optionally, when the telescopic component 22 returns to its original state, the PLC controller sends a pulse command to control the moving component 21 through the first servo driver to drive the telescopic component 22 and the detection component 30, etc., back to the initial position.

[0114] Optionally, the collected real-time data can be sent to the monitoring and management platform via the communication module 212 for data management and analysis, or it can be stored via the data processing module.

[0115] The method for monitoring the foundation 1 of the wind turbine provided in this application embodiment can meet the detection requirements of environmental information of the sea area surrounding the pile foundation 200 of the wind turbine foundation 1, realize the monitoring of the foundation 1, ensure its safety, and after the tail end test point cc is completed, the control telescopic component 22 is shortened so that the detection component 30 moves above the sea level and the detection component 30 is closed, which effectively protects the equipment and prevents marine organisms from attaching, and facilitates personnel maintenance.

[0116] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pile foundation monitoring system (100) for wind turbine generators, characterized in that, The pile foundation monitoring system (100) includes: The support component (10) includes an annular base (11) disposed on the pile foundation (200) and a guide rail (12) extending circumferentially along the annular base (11). A transfer component (20) is disposed on the support component (10). The transfer component (20) includes a movable component (21) and a telescopic component (22). The movable component (21) is movably connected to the guide rail (12) and can move relative to the annular base (11) along the guide rail (12). The telescopic component (22) is connected to the movable component (21) and can extend and retract along the axial direction of the annular base (11). A detection component (30) is disposed on the side of the telescopic member (22) facing away from the moving member (21) in the axial direction. The detection component (30) is configured to detect the environmental information of the sea area where the pile foundation (200) is located. The detection component (30) includes a depth sounder (31) and a water temperature sensor (32). The environmental information includes the distance information from the soil layer of the sea area where the pile foundation (200) is located to the depth sounder (31) and the temperature information of the sea area where the pile foundation (200) is located.

2. The pile foundation monitoring system (100) according to claim 1, characterized in that, The depth sounder (31) includes a multibeam echo sounder and / or a single-beam echo sounder.

3. The pile foundation monitoring system (100) according to claim 1, characterized in that, The pile foundation monitoring system (100) also includes a water inlet sensor (40) and a controller. The water inlet sensor (40) is located on the side of the telescopic member (22) facing away from the moving member (21) in the axial direction. The water inlet sensor (40) is configured to monitor the position information of the detection component (30). The controller controls the opening or closing of the water depth detector (31) according to the position information.

4. The pile foundation monitoring system (100) according to claim 1, characterized in that, The moving part (21) includes a driving part and a walking part (211). The walking part (211) is in rolling engagement with the guide rail (12). The driving part is connected to the walking part (211) to drive the walking part (211) to move relative to the annular base (11) along the guide rail (12).

5. The pile foundation monitoring system (100) according to claim 1, characterized in that, The transfer component (20) further includes an electromagnetic adsorption component (23), which is disposed on the moving component (21) and can magnetically adsorb with the annular substrate (11) so that the moving component (21) moves along the guide rail (12) relative to the annular substrate (11) to a predetermined position and then locks the relative position of the moving component (21) and the annular substrate (11).

6. The pile foundation monitoring system (100) according to claim 1, characterized in that, The pile foundation monitoring system (100) also includes a cable connection device (50) and a connector (60). The cable connection device (50) is located on the movable part (21). The cable connection device (50) can obtain power from the outside. At least one of the transfer part (20) and the detection part (30) is electrically connected to the cable connection device (50) through the connector (60).

7. The pile foundation monitoring system (100) according to claim 6, characterized in that, The cable connection device (50) includes a protective body (51) and a plurality of terminals (52). The protective body (51) has a protective cavity (511). The plurality of terminals (52) are located in the protective cavity (511) and can obtain power from the outside. The connector (60) includes an input end (61) and an output end (62). The input end (61) is connected to the terminals (52). The output end (62) is at least partially protruding from the protective cavity (511) of the protective body (51) and is electrically connected to at least one of the transfer component (20) and the detection component (30).

8. The pile foundation monitoring system (100) according to claim 6, characterized in that, The moving part (21) includes a power adapter module, a data processing module and a communication module (212). The power adapter module obtains power from the connector (60) and transmits it to the detection component (30). The data processing module is configured to store and / or process the environmental information. The communication module (212) is configured to send the environmental information to a predetermined location.

9. The pile foundation monitoring system (100) according to claim 1, characterized in that, The telescopic component (22) includes a telescopic cylinder; Alternatively, the telescopic member (22) may include a base (221), a reel (222), and a sleeve-type telescopic part (223), wherein the base (221) is connected to the sleeve-type telescopic part (223) and drives the sleeve-type telescopic part (223) to extend or shorten, and the reel (222) is disposed on the base (221) and is used to wind or release the cable electrically connected to the detection component (30).

10. A foundation for a wind turbine generator (1), characterized in that, include: The pile foundation (200) includes a support pile (201) and a cage (202) disposed on the support pile (201). ； In the pile foundation monitoring system (100) as described in any one of claims 1 to 9, the annular base (11) is arranged around the pile foundation (200) and connected to the cage (202).

11. A wind turbine generator set, characterized in that, Includes the basis (1) as described in claim 10.

12. A method for monitoring the foundation (1) of the wind turbine generator as described in claim 10, characterized in that, include: Determine a plurality of test points distributed along the circumferential direction of the foundation (1), wherein the plurality of test points include a head test point (aa), a tail test point (cc), and at least one transition test point (bb) located between the head test point (aa) and the tail test point (cc). The moving component (21) is controlled to move along the guide rail (12) and sequentially pass through the first end test point (aa), each of the transition test points (bb), and the last end test point (cc); wherein, At the first test point (aa), the telescopic component (22) is extended so that the detection component (30) extends into the sea area where the foundation (1) is located. The detection component (30) is then activated to detect the environmental information of the sea area at the first test point (aa). At each of the transition test points (bb), the telescopic member (22) is kept in an extended state, and the detection component (30) is used to detect the environmental information of the sea area at each of the transition test points (bb); At the tail end test point (cc), after the detection component (30) detects the environmental information of the sea area at the tail end test point (cc), the telescopic component (22) is controlled to shorten so that the detection component (30) moves above the sea level and the detection component (30) is turned off.

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