CN113417805A

CN113417805A - Assembling method, assembling equipment and assembling system for wind turbine generator blades

Info

Publication number: CN113417805A
Application number: CN202110773703.8A
Authority: CN
Inventors: 韦瀚; 边兴峰; 付强; 吕承康; 杭文英; 苗琛
Original assignee: Shanghai Hengchen New Energy Technology Co ltd
Current assignee: Shanghai Hengchen New Energy Technology Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-09-21

Abstract

The application discloses an assembling method, assembling equipment and an assembling system for blades of a wind turbine generator, which can realize the installation of the blades more safely and reliably. The assembling method of the wind turbine generator blade comprises the following steps: providing an aerodynamic propeller for adjusting the position of the blades to be assembled; detecting wind power parameters corresponding to wind loads borne by the blades; adjusting the output of the aerodynamic propeller according to the wind power parameter, thereby adjusting the position of the blade.

Description

Assembling method, assembling equipment and assembling system for wind turbine generator blades

Technical Field

The application relates to the field of wind power, in particular to an assembling method, assembling equipment and an assembling system of blades of a wind turbine generator.

Background

Under the trend of large-scale wind generating set, the single-blade hoisting scheme becomes the future mainstream hoisting mode. The introduction of the new process solves the problems that the weight of the wind wheel is too heavy and a large-tonnage crane is scarce.

The traditional mode of offsetting wind load and adjusting the pose of the single-blade lifting appliance is a guy rope method, namely, two anchor points are respectively added at two ends of the single-blade lifting appliance, and a guy rope is pulled on the anchor points. The guy rope is divided into a mechanical guy rope and an artificial guy rope. The mechanical guy rope is wound and unwound by a winch on the ground or a crane arm support, so that the position and the posture of the blade are adjusted; the manual method is to directly draw the blade lifting appliance by ground workers, so that the potential safety hazard is great, and personnel injury is easily caused when wind is strong; moreover, the pulling force of people is limited, and the people cannot work basically when the wind is strong. The two methods are time-consuming and complex in system, and often use equipment such as pulleys, and have the defect of high cost.

The traditional cable wind rope system is difficult to meet the development requirements of economy, practicability, flexibility and safety of the current wind power, and a blade assembly method is urgently needed to realize safer and more reliable blade installation.

Disclosure of Invention

In view of this, the present application provides an assembling method, an assembling device, and an assembling system for a wind turbine blade, which can realize the installation of the blade more safely and reliably.

The application provides an assembling method of a wind turbine blade, which comprises the following steps: providing an aerodynamic propeller for adjusting the position of the blades to be assembled; detecting wind power parameters corresponding to wind loads borne by the blades; adjusting the output of the aerodynamic propeller according to the wind power parameter, thereby adjusting the position of the blade.

Optionally, a wind speed sensor is used to detect wind parameters corresponding to the wind load borne by the blade, where the wind parameters include wind speed and wind direction.

Optionally, the method further comprises the following steps: providing a controller connected to the aerodynamic thruster and the sensor; outputting, by the controller, an adjustment instruction to the aerodynamic propeller according to the wind speed; and the aerodynamic propeller adjusts the acting force output to the blades according to the adjusting instruction so as to balance the wind load borne by the blades.

Optionally, the aerodynamic propeller is capable of changing the position of the blades at least in a horizontal direction and in a vertical direction.

Optionally, the method further comprises the following steps: acquiring a standard blade angle of the blade in an assembling process; acquiring an actual blade angle of the blade in an assembling process; acquiring offset according to the standard blade angle and the actual blade angle; and adjusting the output of the aerodynamic propeller according to the offset to adjust the actual blade angle of the blade in the assembling process, so that the actual blade angle approaches to the standard blade angle.

The application provides an assembly equipment of wind turbine generator system blade, can realize the assembly method, just the assembly equipment includes: the aerodynamic propeller is used for adjusting the position of the blade; the sensor is used for being assembled on the surface of blade hoisting equipment or the surface of the blade so as to detect wind power parameters corresponding to wind loads borne by the blade; and the controller is connected to the sensor and the aerodynamic propeller and used for adjusting the acting force output by the aerodynamic propeller according to the wind power parameter.

Optionally, the number of aerodynamic propellers is at least two, and there are at least two forces that the aerodynamic propellers are capable of providing in different directions.

Optionally, the aerodynamic propeller comprises at least one of a propeller propulsion device and a turbine propulsion device.

Optionally, the system further comprises a storage module connected to the controller for storing standard attitude information of the blade during the assembly process.

The application provides an assembly system of wind turbine generator system blade, include rigging equipment to and hoist, the hoist is used for loading the blade that waits to assemble, just rigging equipment is connected to the hoist.

Optionally, the connection mode of the assembly equipment and the lifting appliance includes at least one of bolt connection, pin connection and welding connection.

The method, the equipment and the system for assembling the blades of the wind turbine generator set are pioneering, and the positions and postures of the blades in the assembling process are adjusted through the aerodynamic propeller, so that the hoisting is safer and more accurate, the wind speed and the wind load are sensed in real time, and the intelligent adjustment is carried out. And the method is independent of the limitation of a site and a crane, and the cost is lower.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application.

Fig. 1 is a schematic structural diagram of the assembling apparatus in an embodiment of the present application.

Fig. 2 is a schematic disassembled view of the controller and the aerodynamic propeller in one embodiment.

Fig. 3 is a schematic structural diagram of the mounting system according to an embodiment of the present application.

FIG. 4 is a schematic view of the forces applied to the mounting system in the embodiment of FIG. 3 when the blade is assembled.

FIG. 5 is a schematic view of the forces applied to the mounting system in the embodiment of FIG. 3 with the blade mounted.

Fig. 6 is a flow chart illustrating steps of the assembly method according to an embodiment of the present application.

Detailed Description

The following further describes the assembling device, the assembling method and the assembling system of the wind turbine blade with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, which is a schematic structural diagram of an assembling apparatus 11 for a wind turbine blade according to an embodiment of the present application.

The assembling apparatus 11 includes: aerodynamic propellers (3 and 4) for adjusting the position of the blades 5; a sensor (not shown in fig. 1) for fitting to a surface of a blade 5 lifting device or to a surface of said blade 5 to detect a wind parameter corresponding to a wind load to which said blade 5 is subjected; and the controller is connected to the sensor and the aerodynamic propeller and used for adjusting the acting force output by the aerodynamic propeller according to the wind power parameter.

The assembly device 11 for the blades of the wind turbine can be applied to land wind power solutions and ocean wind power solutions.

The aerodynamic propellers (3 and 4) can convert electric energy into mechanical energy, generally have rotating blades or jet ports, generate thrust by jetting or jetting water through the rotating blades or the jet ports, and can be used for driving the blades to be hoisted to change the current posture and position.

The number of said aerodynamic propellers (3 and 4) is at least two and there are at least two forces that can be provided by the aerodynamic propellers (3 and 4) in different directions, so that the position of the blade can be changed at least from two directions.

In the embodiment shown in fig. 1, the fitting device 11 comprises a first aerodynamic propeller 3 and a second aerodynamic propeller 4. The first aerodynamic propeller 3 and the second aerodynamic propeller 4 are connected to the controller through the base 2, and the two aerodynamic propellers change the position of the blade 5 by the magnitude and direction of the wind force of the wind. The air outlet directions of the two aerodynamic propellers are variable, so that the adjustment of the positions of the blades can be flexibly and flexibly completed.

In practice the number of said aerodynamic propellers may also be set as desired. The air outlet direction of the aerodynamic propeller is controlled by the controller.

The aerodynamic propeller comprises at least one of a propeller propulsion device and a turbine propulsion device.

The sensors include a wind speed sensor and a wind direction sensor, wherein the wind speed sensor can be used for measuring wind speed, and the sensors include a mechanical wind speed sensor, an ultrasonic wind speed sensor and the like. The wind speed sensor can be used for effectively obtaining wind speed information. The wind direction sensor includes at least one of a photoelectric wind direction sensor or a voltage wind direction sensor, a compass wind direction sensor, etc. for measuring a wind direction in an outdoor environment.

In the embodiment, the shell of the used sensor is made of high-quality aluminum alloy section bars or polycarbonate composite materials, is rain-proof, corrosion-resistant and ageing-resistant, and is beneficial to prolonging the service life when the offshore wind turbine generator or the desert wind turbine generator and other extreme wind turbine generators are assembled, so that the sensor can be used outdoors for a long time.

The controller comprises at least one of a single chip microcomputer, a programmable logic device, a microcontroller and the like. In this schematic diagram, the controller is connected to the two aerodynamic propellers for controlling the air outlet of the first aerodynamic propeller 3 and the second aerodynamic propeller 4.

In this embodiment, the controller is arranged in an electric cabinet 13 in fig. 1, and the electric cabinet 13 has a housing, so that the controller can be used for assembling the aerodynamic propeller.

Fig. 2 is a schematic illustration showing the controller and the aerodynamic propeller disassembled according to an embodiment.

In this embodiment, the first aerodynamic propeller 3 and the second aerodynamic propeller 4 are connected to the electric cabinet through a base, a docking flange 16 is disposed at one end of each of the bases, the first aerodynamic propeller 3 and the second aerodynamic propeller 4 can be connected to the electric cabinet 14 through the docking flange 16, a PLC (Programmable Logic Controller), a power supply, and the like are disposed in the electric cabinet 14, in addition to the Controller, and the power supply is connected to the Controller and the first aerodynamic propeller 3 and the second aerodynamic propeller 4, the Controller can control the power supply condition of the power supply, and the power supply can also supply power to the Controller.

In the embodiment shown in fig. 1, the assembly apparatus 11 further comprises a storage module (not shown in fig. 1) for storing standard attitude information of the blade 5 during assembly, the standard attitude information comprising a standard blade angle of the blade 5 at the hub interface to which the blade 5 is mounted, at which standard blade angle the blade 5 can be mounted more simply, conveniently and accurately.

In a preferred embodiment, the assembling device 11 further comprises an input/output module connected to the control module and the storage module, for adding, deleting and modifying the standard posture information in the storage module. The input and output module comprises at least one of common input and output devices such as a keyboard and a touch screen.

The controller is connected to the storage module and can acquire the standard attitude information stored in the storage module. After comparing the standard attitude information with the real-time attitude information acquired by the sensor in real time, the controller outputs a corresponding adjustment instruction to control the left and right air-powered propellers to generate a thrust or a pull to keep the blades 5 in a stable attitude.

The embodiment of the application also provides an assembling system 1 of the wind turbine blade.

Please refer to fig. 3, which is a schematic structural diagram of the assembling system 1 for a wind turbine blade according to an embodiment of the present application.

The assembling system 1 comprises the assembling device and a lifting appliance 6, wherein the lifting appliance 6 is used for loading the blade 5 to be assembled, and the assembling device is connected to the lifting appliance 6.

The connection between the rigging equipment and the spreader 6 may be either self-contained or separate. The connection mode of the assembling equipment and the lifting appliance 6 comprises at least one of bolt connection, pin connection and welding connection.

The mounting device is brought into mounting connection with the spreader 6 by means of the mounting 15 in fig. 1. When the blade 5 is mounted, equipment such as a crane 7 lifts the hanger 6 by using a lifting rope 10, a hook 9, and the like. The spreader 6 comprises a single blade spreader, typically with a clamping device that can clamp the wind turbine blade 5 of the wind turbine. The lifting rope 10 comprises a steel wire rope.

The first aerodynamic thruster 3 and the second aerodynamic thruster 4 are assembled to both ends of the electric cabinet 8 and connected to a power supply, a controller, etc. provided in the electric cabinet 8.

When the first aerodynamic propeller 3 and the second aerodynamic propeller 4 are not started, the wind turbine rotor blade 5 can swing under the action of wind load in the air or rotate around the hook 9. The sensor can detect wind power parameters corresponding to wind load borne by the blade 5 and transmit the wind power parameters to the controller, and the controller controls the first aerodynamic propeller 3 and the second aerodynamic propeller 4 to generate thrust according to the wind power parameters to counteract acting force of the wind load, so that the blade 5 is ensured to be stable in the hoisting process.

Please refer to fig. 4, which is a schematic diagram of the force applied when the assembling system 1 of the embodiment shown in fig. 3 is assembled with the blade 5.

In this embodiment, when the wind turbine generator set rotor blades 5 are subjected to a wind load with a force F1, the controller will control the first and second

aerodynamic propulsion devices

3, 4 to generate opposing forces F3 and F4 to counteract.

In other embodiments, the blade 5 is irregular in shape, the centroid and the center of gravity are not in the same straight line, and the blade 5 needs to be hung at the center of gravity during hoisting, so that the distance between the centroid and the center of gravity forms a bending moment, and the bending moment enables the whole sling 6 to rotate around the hoisting point (i.e. the position corresponding to the hook 9). Therefore, the mounting system 1 should also have a counteracting effect on this rotation.

Fig. 5 is a schematic view of the force applied when the assembling system 1 of the embodiment shown in fig. 3 is assembled with the blade 5.

In this embodiment, when the wind turbine blade 5 rotates around the hook 9, the controller will issue an adjustment command to make the first aerodynamic propulsion device 3 and the second aerodynamic propulsion device 4 generate different forces to counteract the effect of M1 or M2.

In other embodiments, when the blade 5 is close to the hub interface to be mounted, the position of the blade 5 needs to be finely adjusted to achieve alignment, and at this time, the first aerodynamic propeller 3 and the second aerodynamic propeller 4 can be manually adjusted to achieve fine adjustment of the posture of the blade 5, and finally, the alignment of the blade 5 and the hub center is achieved, and the butt-joint mounting is completed.

The assembly equipment provides brand-new attitude stability control applicable to the installation process of the wind turbine blade 5 of the wind turbine generator system, and solves the problems that the attitude and the position of the blade 5 are difficult to control when a manual cable pulling wind rope is pulled, the cable pulling wind rope of a ground winch needs a larger field, the cable pulling wind rope on a crane boom is complex to disassemble and assemble, and the potential safety hazard caused by cable clamping stagnation in the installation process of the blade 5 is avoided. Moreover, the whole mechanism of the assembling equipment has high automation degree, simple structure and convenient installation. The assembling equipment can be matched with different lifting appliances 6 and can also be integrated with the lifting appliances 6. The equipment has compact structure, convenient transportation, high automation degree and remarkably reduced installation time.

The embodiment of the application further provides an assembling method of the wind turbine blade.

Please refer to fig. 6, which is a flowchart illustrating steps of the assembling method according to an embodiment.

In this embodiment, the assembly method comprises the steps of:

step S101: providing an aerodynamic propeller for adjusting the position of the blades 5 to be assembled;

step S102: and detecting wind power parameters corresponding to the wind load borne by the blade 5. The wind parameters include wind speed and wind direction.

In one embodiment, the wind speed corresponding to the wind load borne by the blade 5 is detected by a wind speed sensor, and the wind direction corresponding to the wind load borne by the blade 5 is detected by a wind direction sensor.

Step S103: the output of the aerodynamic propeller is adjusted according to the wind force parameters, thereby adjusting the position of the blades 5.

The assembly method further comprises the steps of: providing a controller connected to the aerodynamic thruster and the sensor; outputting, by the controller, an adjustment instruction to the aerodynamic propeller according to the wind speed; and the aerodynamic propeller adjusts the acting force output to the blades 5 according to the adjusting instruction so as to balance the wind load borne by the blades 5.

The aerodynamic propeller is capable of changing the position of the blades 5 at least in the horizontal and vertical directions.

The assembly method further comprises the steps of: acquiring a standard blade angle of the blade 5 in an assembling process; acquiring the actual blade angle of the blade 5 in the assembling process; acquiring offset according to the standard blade angle and the actual blade angle; and adjusting the output of the aerodynamic propeller according to the offset to adjust the actual blade angle of the blade 5 in the assembling process, so that the actual blade angle approaches to the standard blade angle.

The method and the equipment for assembling the blades of the wind turbine generator and the assembling system 1 provided by the application have the advantages that the positions and the postures of the blades 5 in the assembling process are adjusted through the aerodynamic propeller, so that the hoisting is safer and more accurate, the wind speed and the wind load are sensed in real time, and the intelligent adjustment is carried out. And the method is independent of the limitation of a site and a crane, and the cost is lower.

The above-mentioned embodiments are only examples of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by the contents of the specification and the drawings, such as the combination of technical features between the embodiments and the direct or indirect application to other related technical fields, are also included in the scope of the present application.

Claims

1. The method for assembling the blades of the wind turbine generator is characterized by comprising the following steps of:

providing an aerodynamic propeller for adjusting the position of the blades to be assembled;

detecting wind power parameters corresponding to wind loads borne by the blades;

adjusting the output of the aerodynamic propeller according to the wind power parameter, thereby adjusting the position of the blade.

2. The method for assembling the blades of the wind turbine generator set according to claim 1, wherein wind parameters corresponding to wind loads borne by the blades are detected through a wind speed sensor, and the wind parameters comprise wind speed and wind direction.

3. The assembly method of wind turbine blades according to claim 1, further comprising the steps of:

providing a controller connected to the aerodynamic thruster and the sensor;

outputting, by the controller, an adjustment instruction to the aerodynamic propeller according to the wind speed;

and the aerodynamic propeller adjusts the acting force output to the blades according to the adjusting instruction so as to balance the wind load borne by the blades.

4. The assembly method of wind turbine blades according to claim 1, further comprising the steps of:

acquiring a standard blade angle of the blade in an assembling process;

acquiring an actual blade angle of the blade in an assembling process;

acquiring offset according to the standard blade angle and the actual blade angle;

and adjusting the output of the aerodynamic propeller according to the offset to adjust the actual blade angle of the blade in the assembling process, so that the actual blade angle approaches to the standard blade angle.

5. An assembly plant of wind turbine blades, characterized in that it is able to implement the assembly method of any one of claims 1 to 4 and in that it comprises:

the aerodynamic propeller is used for adjusting the position of the blade;

the sensor is used for being assembled on the surface of blade hoisting equipment or the surface of the blade so as to detect wind power parameters corresponding to wind loads borne by the blade;

and the controller is connected to the sensor and the aerodynamic propeller and used for adjusting the acting force output by the aerodynamic propeller according to the wind power parameter.

6. The wind turbine blade mounting apparatus of claim 5, wherein the number of aerodynamic propellers is at least two and there are at least two forces that can be provided by the aerodynamic propellers in different directions.

7. The wind turbine blade mounting apparatus of claim 5, wherein the aerodynamic thruster comprises at least one of a propeller propulsion device and a turbine propulsion device.

8. The assembling device for wind turbine blades according to claim 5, further comprising a storage module connected to said controller for storing standard attitude information of the blades during the assembling process.

9. Assembly system of blades of a wind turbine, characterized in that it comprises an assembly device according to claim 5, and a spreader for loading the blades to be assembled, the assembly device being connected to the spreader.

10. The system of claim 9, wherein the rigging equipment is connected to the spreader in a manner comprising at least one of a bolted connection, a pinned connection, and a welded connection.