Method, device and equipment for detecting position of main beam of wind power blade, medium and product

Abstract

The embodiment of the invention discloses a position detection method, device and equipment for a wind power blade main beam, a medium and a product, and belongs to the technical field of wind power generation. The wind power blade main beam position detection method comprises the steps that optical signal parameters collected by an optical fiber sensor are obtained, and the optical fiber sensor is pre-embedded in a target position of a main mold of a wind power blade; according to the optical signal parameters, the actual offset of the main beam in the main mold is determined; and outputting prompt information under the condition that the actual offset is greater than the preset offset. The optical fiber sensor is pre-embedded in the main mold of the blade, so that the position of the main beam can be automatically detected and judged, and the detection efficiency and the accuracy of a detection result are improved. And the optical fiber sensor can be suitable for being used in a non-transparent mold, even in the laying process, the optical fiber sensor can also collect optical signal parameters, therefore, the deviation of the main beam can be found in time, and the blade quality is improved.

Description

Technical Field

[0001] The present application relates to the field of wind power generation technology, and in particular to a method, device, equipment, medium and product for detecting the position of a main beam of a wind turbine blade. Background Art

[0002] The main beam is the most important area in the wind turbine blade structure. The accuracy of the main beam position has a significant impact on the safety, performance or service life of the blade structure.

[0003] At present, the main beam position detection mainly adopts the method of placing a steel structure positioning tooling on the blade mold, adjusting the edge of the main beam to be close to the tooling by lifting with an overhead crane, and using a level ruler or a box ruler to measure the horizontal distance or inclined distance in the chord direction of the main beam, so as to achieve the purpose of collecting the main beam position data and identifying the main beam offset. This detection method not only has the problems of low accuracy and low efficiency, but also due to the limitation of visualization, it is impossible to identify the sliding offset of the main beam in time during the blade laying process, which is risky. Summary of the invention

[0004] The present application provides a method, device, equipment, medium and product for detecting the position of the main beam of a wind turbine blade, which can solve the problems of low accuracy and efficiency in related technologies when detecting the position of the main beam of a blade, and the inability to timely identify the sliding offset of the main beam during the blade laying process.

[0005] In a first aspect, an embodiment of the present application provides a method for detecting the position of a main beam of a wind turbine blade, comprising: Obtaining optical signal parameters collected by the optical fiber sensor, the optical fiber sensor is pre-buried in a target position of the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold; According to the optical signal parameters, the actual offset of the main beam in the main mold is determined; When the actual offset is greater than the preset offset, a prompt message is output, which is used to indicate that the main beam is offset in the main mold.

[0006] In a second aspect, an embodiment of the present application provides a position detection device for a wind turbine blade main beam, comprising: An acquisition module is used to acquire optical signal parameters collected by an optical fiber sensor. The optical fiber sensor is pre-buried in a target position of a main mold of a wind turbine blade, and the target position corresponds to a placement position of the main beam in the main mold. A determination module, used to determine the actual offset of the main beam in the main mold according to the optical signal parameters; The output module is used to output a prompt message when the actual position is greater than a preset offset, and the prompt message is used to indicate that the main beam is offset in the main mold.

[0007] In a third aspect, an embodiment of the present application provides a position detection device for a main beam of a wind turbine blade, including a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0008] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0009] In a fifth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium. When the computer program product is executed by at least one processor, the steps of the method described in the first aspect are implemented.

[0010] In the embodiment of the present application, optical signal parameters collected by an optical fiber sensor are obtained. The optical fiber sensor is embedded at a target position in the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold. According to the optical signal parameters, the actual offset of the main beam in the main mold is determined. When the actual offset is greater than the preset offset, a prompt message is output, and the prompt message is used to indicate that the main beam is offset in the main mold. By embedding an optical fiber sensor in the main mold of the blade, the position of the main beam can be automatically detected and judged, improving the detection efficiency and the accuracy of the detection result. Moreover, the optical fiber sensor can be applied to non-transparent molds. Even during the layup process, the optical fiber sensor can collect optical signal parameters, thereby enabling the timely discovery of the offset of the main beam and improving the quality of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Next, the features, advantages, and technical effects of the exemplary embodiments of the present application will be described with reference to the drawings.

[0012] Figure 1 is a flowchart of a method for detecting the position of the main beam of a wind turbine blade provided by an embodiment of the present application; Figure 2 is a flowchart of another method for detecting the position of the main beam of a wind turbine blade provided by an embodiment of the present application; Figure 3 is a schematic diagram of the ideal position of the main beam in the main mold provided by an embodiment of the present application; Figure 4 is a flowchart of another method for detecting the position of the main beam of a wind turbine blade provided by an embodiment of the present application; Figure 5 is a schematic diagram of the actual position of the main beam in the main mold provided by an embodiment of the present application; Figure 6 is a schematic structural diagram of a device for detecting the position of the main beam of a wind turbine blade provided by an embodiment of the present application; Figure 7 This is a schematic structural diagram of a position detection device for the main beam of a wind turbine blade provided by an embodiment of the present application.

[0013] In the drawings, the drawings are not necessarily drawn to actual scale. Detailed implementation manners

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0015] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used in the description of the present application in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the description and claims of the present application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0016] Referring to "embodiments" in the present application means that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0017] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0018] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings in the embodiments of the present application, as well as the overall thickness, length, width, etc. of the integrated device are only for illustrative purposes and should not constitute any limitation to the present application.

[0019] In this application, "a plurality of" means two or more (including two).

[0020] To better understand this application, the terms related to this application are explained as follows: Wind turbine blade: A component of a wind turbine generator unit. Each section of the blade is designed as an airfoil. From the blade root to the tip, its thickness, twist angle, and chord length have a certain distribution law, and it has a good aerodynamic shape.

[0021] Main beam of wind turbine blade: Located between the inner and outer skins on the windward and leeward sides of the wind turbine blade. Looking from the chord direction, the main beam is located in the area of 1 / 3 - 1 / 2 of the chord length. The main beam uses unidirectional fibers, and the materials are glass fiber or carbon fiber. The main process forming methods include lay-up infusion, prepreg lay-up, and pultruded plate lay-up. The function of the main beam is to provide flap bending stiffness, avoid the blade from colliding with the tower barrel, and bear the main bending moment and axial load of the blade, and transfer the load to the blade root.

[0022] Axial direction: Refers to the length direction along the blade from the root to the tip, that is, the longitudinal direction.

[0023] Chord direction: Refers to the chord direction of the airfoil at any spanwise position of the blade, generally at 90° to the axial direction.

[0024] As described in the background art, the main beam is the most important area in the structure of the wind turbine blade. The accuracy of the main beam position has a significant impact on the safety, performance, or service life of the blade structure. Currently, it is mainly to use manual methods with the help of tools such as overhead cranes, steel structure positioning jigs, and spirit levels to determine the position of the main beam, and then identify whether the main beam is offset. This method not only has low accuracy and low efficiency, but also due to the limitation of visualization during the lay-up process, it is impossible to timely identify the sliding offset of the main beam, which affects the quality of the blade.

[0025] Therefore, the embodiments of this application provide a method, device, equipment, medium, and product for detecting the position of the main beam of a wind turbine blade, which can solve the problems of low accuracy and low efficiency in detecting the position of the main beam of the blade in the related technology, and the inability to timely identify the sliding offset of the main beam during the blade lay-up process.

[0026] The method for detecting the position of the main beam of a wind turbine blade provided by the embodiments of this application is described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Figure 1 It is a flowchart of a method for detecting the position of the main beam of a wind turbine blade provided by the embodiments of this application. This method for detecting the position of the main beam of a wind turbine blade can be applied to electronic devices with data processing functions, such as tablet computers, notebook computers, servers, personal computers, etc. This method for detecting the position of the main beam of a wind turbine blade can be applied to any airfoil that needs to perform main beam positioning tests, and has a wide application range.

[0028] As Figure 1 shown, the method for detecting the position of the main beam of the wind turbine blade may include the following steps: S110. Obtain the optical signal parameters collected by the fiber optic sensor. The fiber optic sensor is embedded at a target position in the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold.

[0029] S120. Determine the actual offset of the main beam in the main mold according to the optical signal parameters.

[0030] S130. When the actual offset is greater than the preset offset, output a prompt message, where the prompt message is used to indicate that the main beam is offset in the main mold.

[0031] In the embodiment of the present application, the optical signal parameters collected by the fiber optic sensor are obtained. The fiber optic sensor is embedded at a target position in the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold. According to the optical signal parameters, the actual offset of the main beam in the main mold is determined. When the actual offset is greater than the preset offset, a first prompt message is output, where the first prompt message is used to indicate that the main beam is offset in the main mold. By embedding the fiber optic sensor in the main mold of the blade, the position of the main beam can be automatically detected and judged, improving the detection efficiency and the accuracy of the detection result. Moreover, the fiber optic sensor can be applied to non-transparent molds. Even during the layup process, the fiber optic sensor can collect optical signal parameters, thereby enabling the timely discovery of the offset of the main beam and improving the quality of the blade.

[0032] The above steps are described in detail below, as specifically shown below: In S110, in order to timely identify the sliding offset of the main beam during the layup process, and at the same time, considering that the working environment of the blade mold may be high-pressure, corrosive, flammable, explosive, etc., in this embodiment, the fiber optic sensor is used to detect the position of the main beam. The fiber optic sensor can be embedded in the main mold of the wind turbine blade. In actual application, there can be multiple groups of fiber optic sensors, and each group can include multiple fiber optic sensors to monitor different positions of the main beam. For example, each group can contain two fiber optic sensors, which can respectively monitor the changes in the axial and chordal directions of the main beam. Thus, the detection of multiple positions of the main beam can be realized, ensuring the accuracy of the placement of the main beam.

[0033] The fiber optic sensor can use a laser as the light source. Exemplarily, a narrowband semiconductor laser can be used as the light source. The laser is small in volume and low in power consumption, and can be directly integrated into the fiber optic sensing system for use in conjunction with the fiber optic sensor.

[0034] Exemplarily, before application, a protective sleeve can be used to protect the laser to ensure that the compressive strength of the laser is greater than or equal to ≥50 MPa, so as to match the high-pressure forming process of the fiberglass mold. Exemplarily, the protective sleeve can be made of stainless steel or titanium alloy sleeve, and a thermoelectric cooler (TEC) and a heat sink can be integrated inside the protective sleeve to control the temperature fluctuation of the laser during operation ≤±0.5 °C, avoiding the optical coupling offset caused by the thermal expansion of the laser and affecting the detection result of the main beam.

[0035] To ensure the normal transmission of the signal, the interface between the fiber optic sensor and the laser can be fixed by laser welding to reduce the insertion loss between the fiber optic sensor and the laser. For example, the insertion loss can be ≤0.3 dB‌28.

[0036] Exemplarily, before application, the laser can also be calibrated. For example, the output power of the laser can be measured by an optical power meter to make the deviation of the output power ≤±1%, and the hermeticity test of the laser package can be carried out to achieve a helium mass spectrometry leak rate ≤1×10⁻ 8 Pa·m³ / s.

[0037] The main mold here can include an upper mold assembly and a lower mold assembly, that is, the fiber optic sensor can be embedded in the upper mold assembly and the lower mold assembly.

[0038] The target position is the position where the fiber optic sensor is embedded, and this position corresponds to the placement position of the main beam. For example, the fiber optic sensor can be embedded in the main mold corresponding to the placement position of the main beam, so that the position of the main beam can be accurately determined. There can be multiple target positions, so as to realize the detection of multiple positions of the main beam.

[0039] In some embodiments, the target position can be determined according to the model of the blade, the process parameters of the main beam in the main mold, etc. For different blade models, the corresponding process parameters are different when placing the main beam. Determining the embedded position of the fiber optic sensor according to the process parameters corresponding to the blade model can accurately detect the position of the main beam.

[0040] To further improve the accuracy of the main beam position detection result, exemplarily, after initially determining the above target position, a distributed fiber optic network can be combined to arrange fiber optic sensors along the placement position of the main beam, and equipment such as a total station can be used to calibrate the position of the fiber optic sensors to control the error of the fiber optic sensors within ±0.5 mm.

[0041] In some embodiments, when the adjustment mechanism is integrated into the main mold, the target position can correspond to the position of the adjustment mechanism. For example, the position of the adjustment mechanism in the main mold can be determined as the target position. Thus, when the main beam offset is identified, the position of the main beam can be adjusted in a timely manner using the adjustment mechanism at the corresponding position, improving the adjustment efficiency and effect.

[0042] Exemplarily, the optical fiber sensor can be embedded at the target position according to the embedded parameters, and the embedded parameters can include, for example, but are not limited to, the embedded depth, the bending radius of the optical fiber sensor, the width of the encapsulation channel, etc. The embedded parameters can be determined based on experience, experiments, the size of the optical fiber sensor, the signal transmission effect of the optical fiber sensor, etc. In some embodiments, the embedded depth can be set to 5 - 8 mm, the bending radius of the optical fiber sensor is greater than or equal to 2 mm, and the width of the encapsulation channel is 1.5 - 2 mm.

[0043] The optical signal parameters here can be parameters capable of determining the position of the main beam, and can include, for example, but are not limited to, light intensity, light phase, light wavelength, etc.

[0044] In S120, the actual offset here can include at least one of the following: the axial offset of the main beam and the chordal offset. Exemplarily, the actual offset of the main beam in the main mold can be determined according to one or more of light intensity, light phase, and light wavelength.

[0045] Exemplarily, the optical signal parameters actually collected by the optical fiber sensor can be matched with the reference optical signal parameters to obtain the actual offset of the main beam corresponding to the actually collected optical signal parameters. The reference optical signal parameters can be the optical signal parameters corresponding to the main beam in the ideal position, and the reference optical signal parameters can include the optical signal parameters corresponding to the ideal positions of the main beam axially and chordally.

[0046] Exemplarily, the optical signal parameters can also be input into a machine learning model or a deep learning model in combination with the machine learning model or the deep learning model to output the actual offset of the main beam.

[0047] Exemplarily, the strain force of the main beam can also be deduced based on the optical signal parameters, and the actual offset of the main beam can be deduced based on the strain.

[0048] In S130, the preset offset can be the maximum offset allowed for the main beam in the main mold, and different positions of the main beam can allow different offsets. When the actual offset of the main beam is large, it will affect the quality of the blade. Especially when the chordal sliding offset of the main beam is large, there will be a greater risk in the manufactured blade.

[0049] When the actual offset of the main beam in this embodiment is greater than the preset offset, a prompt message is output to prompt relevant personnel that the main beam has shifted. This embodiment does not limit the output method of the prompt message. For example, the prompt message can be output in one or more ways such as voice, text message, email, indicator light, etc. In some embodiments, the prompt message can be sent to the corresponding operation and maintenance personnel by means of text message, email or phone, and the operation and maintenance personnel can take measures in time.

[0050] Exemplarily, the prompt message may include, but is not limited to, information such as the blade model corresponding to the main beam, the actual offset of the main beam, the difference between the actual offset and the preset offset, and the offset direction of the main beam, which helps the operation and maintenance personnel quickly locate the offset position of the main beam, take effective measures in time, and improve the quality and production efficiency of the blades.

[0051] Figure 2 FIG. is a flowchart of another method for detecting the position of the main beam of a wind turbine blade provided by an embodiment of the present application. Figure 2 And Figure 1 The difference is that Figure 2 It further includes S210-S220.

[0052] S210. Obtain the blade model of the wind turbine blade and the process parameters of the main beam corresponding to the blade model in the main mold.

[0053] The process parameters of the main beam in the main mold are also the position parameters when the main beam is placed in the main mold. Exemplarily, the process parameters include at least one of the following: the axial parameter of the main beam in the main mold, the chordal parameter. The axial parameter may include, for example, the axial length, the starting position of the axis, and the ending position of the axis. The chordal parameter may include, for example, the chordal width, the starting position of the chord, and the ending position of the chord.

[0054] Different blade models correspond to different main beam process parameters. In this embodiment, the main beam process parameters are dynamically determined according to the blade model, which can improve the accuracy of the detection result.

[0055] Exemplarily, a mapping relationship between different blade models and the process parameters of the corresponding main beam can be established in advance. Subsequently, the process parameters of the main beam corresponding to the current blade model can be directly obtained by looking up the mapping relationship, which is simple and fast, and can thus improve the detection efficiency.

[0056] Exemplarily, the mapping relationship can be stored locally or in the server. In this case, the device for detecting the position of the main beam of the wind turbine blade can send the blade model to the server, and the server determines the process parameters of the main beam corresponding to the blade model and then sends them to the device for detecting the position of the main beam of the wind turbine blade, so that the device for detecting the position of the main beam of the wind turbine blade can determine the embedded position of the fiber optic sensor based on the process parameters.

[0057] S220. Determine the target position for embedding the fiber optic sensor in the main mold according to the process parameters.

[0058] According to the process parameters, the ideal position of the main beam can be determined. Figure 3 Exemplarily, a schematic diagram of the ideal position of the main beam is listed. The dashed box 301 represents the ideal position of the main beam. The target position can be set based on the ideal position. For example, in the axial direction, a fiber optic sensor can be placed at intervals, and the intervals between adjacent fiber optic sensors can be the same or different.

[0059] In this embodiment, the process parameters corresponding to the main beam can be determined based on the blade model, and then the embedding position of the fiber optic sensor in the main mold can be determined according to the process parameters, improving the accuracy of the embedding position, and then the position of the main beam in the main mold can be accurately measured.

[0060] Taking the optical signal parameter including the wavelength shift as an example, exemplarily, the fiber optic sensor can include a Fiber Bragg Grating (FBG). To determine the actual position of the main beam, Figure 4 Exemplarily, a flowchart of a method for detecting the position of the main beam of a wind turbine blade is provided. Figure 4 Different from Figure 1 is that Figure 1 S120 in Figure 4 can be refined into S410 - S420 in

[0061] S410. Determine the strain force of the main beam corresponding to the wavelength shift according to the wavelength shift and the first correlation relationship, where the first correlation relationship is used to characterize the relationship between different wavelength shifts and the strain force and temperature of the main beam.

[0062] When the main beam deflects, affected by the surrounding layup materials, the strain force and temperature of the main beam will change, and then the optical wavelength collected by the fiber optic sensor will change. Therefore, the strain force and temperature of the main beam can be determined according to the wavelength shift of the optical wavelength collected by the fiber optic sensor.

[0063] In this embodiment, the first correlation relationship between the wavelength shift and the strain force and temperature can be established in advance, and then the strain force at the corresponding position of the main beam can be directly determined based on the first correlation relationship.

[0064] Since the strain force and temperature jointly affect the wavelength shift, exemplarily, the strain force obtained above can be compensated through a temperature compensation model to achieve the separation of the strain force and temperature and improve the accuracy of the strain force. The temperature compensation model can be a machine learning model such as a support vector regression model.

[0065] Exemplarily, two fiber optic sensors can also be set at the same position. One fiber optic sensor is bonded to the mold to sense the temperature and strain force of the main beam, and the other fiber optic sensor only senses the temperature of the main beam. Subsequently, the influence of temperature on the strain force is eliminated by means of difference. The models, structures, etc. of the two fiber optic sensors are the same.

[0066] S420. Determine the actual offset corresponding to the strain force of the main beam according to the strain force of the main beam and the second correlation relationship, where the second correlation relationship is used to characterize the correlation relationship between different strain forces of the main beam and the offset of the main beam.

[0067] When the main beam is subjected to different strain forces, its corresponding displacements are also different. Exemplarily, a second correlation relationship between different strain forces and displacements can be established in advance. The second correlation relationship can be a functional relationship, a model relationship, a tabular relationship, etc.

[0068] For example, a 3D finite element model of the main beam can be established. The material properties, boundary conditions, etc. of this model are consistent with the actual process to ensure the accuracy of the results. Based on this 3D finite element model, the strain distribution of the main beam under different offsets is simulated to obtain the second correlation relationship.

[0069] Since the wavelength modulation type sensor has high precision and anti-interference ability, the strain force of the main beam is determined by using the wavelength offset, and then the offset of the main beam is determined according to the strain force, and the accuracy of the result is higher.

[0070] In actual application, due to reasons such as layering, it is easy to cause multiple materials to exist in the sensing area of the fiber optic sensor. For example, in addition to including the material of the main beam, there may also be other auxiliary materials such as glass fiber. The material of the main beam can be, for example, a pultruded plate. Different materials correspond to different wavelength characteristics, that is, in actual application, there may be multiple wavelength offsets fed back by the fiber optic sensor, and different wavelength offsets can correspond to different materials. In order to accurately determine the wavelength offset corresponding to the pultruded plate, exemplarily, the above S410 may include the following steps: Determine the target wavelength offset of the material corresponding to the main beam from each wavelength offset according to the relationship between the wavelength offset corresponding to different materials and the strain force and temperature; Determine the strain force of the main beam corresponding to the target wavelength offset according to the target wavelength offset and the first correlation relationship corresponding to the target wavelength offset.

[0071] It can be understood that for different materials, the relationships among the corresponding wavelength offset, strain force, and temperature are different, and the relationships between the strain force and temperature corresponding to different materials are also different. Based on the wavelength offset, the relationship between the corresponding strain force and temperature can be determined. Furthermore, based on the relationship between the strain force and temperature, the material corresponding to each wavelength offset can be determined, thereby accurately determining the target wavelength offset corresponding to the pultruded plate. According to the target wavelength offset corresponding to the pultruded plate and in combination with the first correlation relationship, the strain force of the main beam can be accurately determined, and then the offset of the main beam can be accurately determined.

[0072] To promptly solve the problem of the offset of the main beam, exemplarily, when the actual offset is greater than the preset offset, the method for detecting the position of the main beam of the wind turbine blade may further include the following steps: Generate a position adjustment instruction based on the difference between the actual offset and the preset offset; Drive the adjustment mechanism according to the position adjustment instruction, and adjust the position of the main beam through the adjustment mechanism so that the offset of the adjusted main beam is less than or equal to the preset offset. The adjustment mechanism is integrated in the main mold.

[0073] The position adjustment instruction is used to drive the adjustment mechanism, thereby driving the movement of the main beam, realizing the adjustment of the position of the main beam, reducing the offset, and improving the quality of the blade.

[0074] The adjustment mechanism may include, for example, a base, an actuator, a guiding mechanism, a controller, etc. Among them, the base can be fixed to the main mold through a high-strength alloy steel flange. The actuator may include, for example, a hydraulic jack, an electric push rod, etc., and is used to generate mechanical motion to adjust the position of the main beam. Taking the hydraulic jack as an example, exemplarily, 4 groups of hydraulic jacks can be symmetrically arranged to form an "X-Y cross thrust array" to realize the adjustment of the main beam in all directions. The guiding mechanism may include, for example, a guide rail or a slider, and is used to ensure the accurate movement direction of the actuator, avoid the offset of the actuator, and affect the adjustment effect of the main beam. The specific settings and connections of each part are not limited in this embodiment, as long as the main beam can be corrected when it is offset.

[0075] In this embodiment, an adjustment mechanism can be provided on the blade mold. When the main beam is offset, the position of the main beam can be adjusted by using the adjustment mechanism, realizing the automatic adjustment of the position of the main beam and improving the adjustment efficiency.

[0076] In some embodiments, after the optical fiber sensor is pre-buried, the attenuation rate of the optical fiber sensor can be tested with an optical time-domain reflectometer (OTDR) to ensure that the total loss of the optical fiber sensor is ≤0.25dB / km. The optical fiber sensor can also be subjected to a heat and pressure cycle test, for example, to ensure that the drift of the optical signal parameter after N consecutive cycles is ≤±0.1%. N is an integer greater than 1, for example, N=20.

[0077] In some embodiments, when the actual offset of the main beam is greater than the preset offset, the main beam can be repositioned by lifting with an overhead crane or other means to achieve global adjustment of the main beam.

[0078] In some embodiments, there may be multiple adjustment mechanisms, each of which has a different position in the main mold. There may be multiple groups of optical fiber sensors, and each adjustment mechanism corresponds to the position of each group of optical fiber sensors. That is, an adjustment mechanism is installed at the location of each group of optical fiber sensors. Therefore, when a certain position of the main beam is determined to be offset based on each group of optical fiber sensors, the adjustment mechanism at that position can be used to perform adjustment, thereby realizing local adjustment of the position of the main beam. That is, this embodiment can dynamically adjust different positions according to the offset of different positions of the main beam, so that the overall position of the main beam meets the quality requirements.

[0079] Taking the actual offset including the actual axial offset of the main beam in the main mold and the actual chordwise offset of the main beam in the main mold as an example, illustratively, the above S130 may include the following steps: When any of the following conditions is met, a prompt message is output: The actual axial offset is greater than the reference axial offset; The actual chordwise offset is greater than the reference chordwise offset.

[0080] The reference axial offset is the maximum offset of the main beam in the axial direction, and the reference chord offset is the maximum offset of the main beam in the chord direction. The size of the reference axial offset and the reference chord offset can be set according to specific circumstances.

[0081] Regardless of the actual axial offset or the actual chordal offset, as long as one is greater than the corresponding reference offset, the position detection device of the wind turbine blade main beam will output a prompt message to remind the user that the main beam has shifted. This can promptly detect abnormalities in the main beam and improve the quality of the blade.

[0082] Figure 5A schematic diagram of the actual position of the main beam is provided as an example. The actual position of the main beam can be seen in the solid line frame 302. During the laying process, the chord-wise sliding offset occurs in the main beam, and the offset is greater than the reference chord-wise offset. At this time, the position detection device of the wind turbine blade main beam will output a prompt message to prompt the user that the chord-wise sliding offset occurs in the main beam.

[0083] Exemplarily, the position detection device of the main beam of the wind turbine blade can also send the detection results of each position of the main beam to a display screen for display. The display screen can be the display screen of the position detection device of the main beam of the wind turbine blade, or it can be a display screen independent of the position detection device of the main beam of the wind turbine blade. In this case, the position detection device of the main beam of the wind turbine blade can communicate with the display screen. Through the display screen, the user can more intuitively determine the offset area of ​​the main beam. Exemplarily, the position detection device of the main beam of the wind turbine blade can send the detection results of each position of the main beam to the display screen for display through the SPI / I²C protocol. In actual application, it is not limited to this protocol, and data transmission can also be carried out through other protocols.

[0084] For example, for each blade, the offset rate of the main beam offset can be counted, and then a offset rate curve can be drawn based on the offset rate of each blade, where the model, size and other parameters of each blade are the same. Based on the offset rate curve, the user can be guided to improve the quality of the blade. For example, if the main offset rate is on an upward trend, the lifting work of the main beam, the size of the main beam, the size of the mold, etc. can be further checked to see if there are any errors, so as to further improve the placement efficiency of the main beam and the quality of the blade.

[0085] By using the solution of the embodiment of the present application, the testing time of a single blade can be greatly shortened, thereby shortening the mold occupation cycle and improving the production efficiency of the blade. In addition, the accuracy of the main beam position greatly improves the stability of the web bonding gap in the bonding process, reduces the defect of excessive gap, and thus reduces the maintenance cost of a single blade.

[0086] The embodiment of the present application embeds a fiber optic sensor in the main mold. When the main beam is placed, the fiber optic sensor monitors the changes in optical signal parameters (such as intensity, phase, and wavelength) to detect physical quantities such as displacement and strain of the main beam in real time, thereby indirectly reflecting its positioning state. When determining the offset of the main beam, the offset position of the main beam can be adjusted in a targeted manner, thereby improving the detection efficiency, blade production efficiency, and blade quality.

[0087] It should be noted that for the method for detecting the position of the main beam of a wind turbine blade provided in the embodiments of the present application, the execution subject can be a device for detecting the position of the main beam of a wind turbine blade, or a processing module in the device for detecting the position of the main beam of a wind turbine blade that is used to execute the method for detecting the position of the main beam of a wind turbine blade. In the embodiments of the present application, taking the device for detecting the position of the main beam of a wind turbine blade as an example to execute the method for detecting the position of the main beam of a wind turbine blade, the device for detecting the position of the main beam of a wind turbine blade provided in the embodiments of the present application is described.

[0088] Figure 6 FIG. is a schematic structural diagram of a device for detecting the position of the main beam of a wind turbine blade provided in an embodiment of the present application.

[0089] As Figure 6 shown, the device 600 for detecting the position of the main beam of a wind turbine blade may include: An acquisition module 601, configured to acquire optical signal parameters collected by an optical fiber sensor, where the optical fiber sensor is embedded at a target position of the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold; A determination module 602, configured to determine the actual offset of the main beam in the main mold according to the optical signal parameters; An output module 603, configured to output a prompt message when the actual offset is greater than a preset offset, where the prompt message is used to indicate that the main beam is offset in the main mold.

[0090] In the embodiments of the present application, the optical signal parameters collected by the optical fiber sensor are acquired, where the optical fiber sensor is embedded at a target position of the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold; the actual offset of the main beam in the main mold is determined according to the optical signal parameters; when the actual offset is greater than the preset offset, a prompt message is output, and the prompt message is used to indicate that the main beam is offset in the main mold. By embedding an optical fiber sensor in the main mold of the blade, the position of the main beam can be automatically detected and judged, improving the detection efficiency and the accuracy of the detection result. Moreover, the optical fiber sensor can be applied to non-transparent molds, and even during the layup process, the optical fiber sensor can collect optical signal parameters, thereby enabling timely detection of the offset of the main beam and improving the quality of the blade.

[0091] In some embodiments, the acquisition module 601 is further configured to acquire the blade model of the wind turbine blade and the process parameters of the main beam corresponding to the blade model in the main mold before acquiring the optical signal parameters collected by the optical fiber sensor, where the process parameters include at least one of the following: the axial parameter of the main beam in the main mold, the chordal parameter; the axial direction is from the blade root to the blade tip, and the chordal direction is perpendicular to the axial direction; The determination module 602 is further configured to determine the target position where the optical fiber sensor is embedded in the main mold according to the process parameters.

[0092] In some embodiments, the optical signal parameter includes a wavelength offset; The determining module 602 is specifically configured to: Determine the strain force of the main beam corresponding to the wavelength offset according to the wavelength offset and the first correlation relationship, where the first correlation relationship is used to characterize the relationship between different wavelength offsets and the strain force and temperature of the main beam; Determine the actual offset corresponding to the strain force of the main beam according to the strain force of the main beam and the second correlation relationship, where the second correlation relationship is used to characterize the correlation relationship between different strain forces of the main beam and the offset of the main beam.

[0093] In some embodiments, the sensing area of the fiber optic sensor includes multiple materials, the wavelength offset includes multiple, and different wavelength offsets correspond to different materials; The determining module 602 is specifically configured to: Determine the target wavelength offset of the material corresponding to the main beam from each wavelength offset according to the relationship between the wavelength offset corresponding to different materials and the strain force and temperature; Determine the strain force of the main beam corresponding to the target wavelength offset according to the target wavelength offset and the first correlation relationship corresponding to the target wavelength offset.

[0094] In some embodiments, the position detection device 600 of the main beam of the wind turbine blade may further include: A generating module, configured to generate a position adjustment instruction according to the difference between the actual offset and the preset offset when the actual offset is greater than the preset offset; A driving module, configured to drive an adjustment mechanism according to the position adjustment instruction, and adjust the position of the main beam through the adjustment mechanism so that the offset of the adjusted main beam is less than or equal to the preset offset, and the adjustment mechanism is integrated in the main mold.

[0095] In some embodiments, there are multiple adjustment mechanisms and multiple fiber optic sensors, the positions of the adjustment mechanisms in the main mold are different, and each adjustment mechanism corresponds to the position of each fiber optic sensor.

[0096] In some embodiments, the actual offset includes the actual axial offset of the main beam in the main mold and the actual chordal offset of the main beam in the main mold; The output module 603 is specifically configured to: Output a prompt message when any of the following conditions is met: The actual axial offset is greater than the reference axial offset; The actual chordal offset is greater than the reference chordal offset.

[0097] Figure 7The figure is a schematic structural diagram of a position detection device for a main beam of a wind turbine blade provided by an embodiment of the present application. The position detection device 700 for the main beam of the wind turbine blade can implement the position detection method for the main beam of the wind turbine blade in the embodiment of the present application.

[0098] As Figure 7 shown, the position detection device 700 for the main beam of the wind turbine blade may include a processor 701 and a memory 702 storing computer program instructions.

[0099] Specifically, the above-mentioned processor 701 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0100] The memory 702 may include a mass storage for data or instructions. By way of example and not limitation, the memory 702 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disc, a magneto-optical disc, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In a suitable case, the memory 702 may include a removable or non-removable (or fixed) medium. In a suitable case, the memory 702 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, the memory 702 is a non-volatile solid state memory. In a particular embodiment, the memory 702 may include a read only memory (ROM), a random access memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, generally, the memory 702 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described in reference to the method according to an aspect of the present application.

[0101] The processor 701 reads and executes the computer program instructions stored in the memory 702 to implement any one of the position detection methods for the main beam of the wind turbine blade in the above embodiments.

[0102] In one example, the position detection device 700 for the main beam of the wind turbine blade may further include a communication interface 703 and a bus 704. Among them, as Figure 7 shown, the processor 701, the memory 702, and the communication interface 703 are connected through the bus 704 and complete communication with each other.

[0103] The communication interface 703 is mainly used to implement communication between various modules, devices, apparatuses, and / or equipment in the embodiments of the present application.

[0104] The bus 704 includes hardware, software, or both, and couples the components of the position detection device 700 of the main beam of the wind turbine blade to each other. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. In a suitable case, the bus 704 may include one or more buses. Although the embodiments of the present application describe and illustrate specific buses, the present application contemplates any suitable bus or interconnect.

[0105] The position detection device of the main beam of the wind turbine blade can execute the position detection method of the main beam of the wind turbine blade in the embodiments of the present application, so as to implement the combination Figures 1 to 5 with the described position detection method of the main beam of the wind turbine blade.

[0106] In addition, in combination with the position detection method of the main beam of the wind turbine blade in the above embodiments, the embodiments of the present application also provide a readable storage medium to implement. A program or instruction is stored on the readable storage medium; when the program or instruction is executed by a processor, any one of the position detection methods in the above embodiments is implemented.

[0107] The embodiments of the present application also provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0108] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip.

[0109] The embodiments of the present application also provide a computer program product, which is stored in a storage medium. When the computer program product is executed by at least one processor, each process of the above method embodiments can be implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0110] Although the present application has been described with reference to preferred embodiments, various modifications can be made thereto without departing from the scope of the present application, and components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner. The present 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 method for detecting the position of the main beam of a wind turbine blade, characterized in that, Including: Obtaining optical signal parameters collected by an optical fiber sensor, where the optical fiber sensor is embedded at a target position of a main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold; Determining an actual offset of the main beam in the main mold according to the optical signal parameters; When the actual offset is greater than a preset offset, outputting a prompt message for indicating that the main beam is offset in the main mold; When the actual offset is greater than the preset offset, the method further includes: Generating a position adjustment command according to the difference between the actual offset and the preset offset; Driving an adjustment mechanism according to the position adjustment command, and adjusting the position of the main beam through the adjustment mechanism so that the offset of the adjusted main beam is less than or equal to the preset offset, where the adjustment mechanism is integrated in the main mold.

2. The method according to claim 1, wherein Before obtaining the optical signal parameters collected by the optical fiber sensor, the method further includes: Obtaining the blade model of the wind turbine blade and the process parameters of the main beam corresponding to the blade model in the main mold, where the process parameters include at least one of the following: the axial parameter and the chordal parameter of the main beam in the main mold; the axial direction is from the blade root to the blade tip, and the chordal direction is perpendicular to the axial direction; Determining the target position where the optical fiber sensor is embedded in the main mold according to the process parameters.

3. The method according to claim 1, wherein The optical signal parameters include a wavelength offset; The determining the actual offset of the main beam in the main mold according to the optical signal parameters includes: Determining the main beam strain force corresponding to the wavelength offset according to the wavelength offset and a first correlation relationship, where the first correlation relationship is used to characterize the relationship between different wavelength offsets and the strain force and temperature of the main beam; Determining the actual offset corresponding to the main beam strain force according to the main beam strain force and a second correlation relationship, where the second correlation relationship is used to characterize the correlation relationship between different main beam strain forces and the main beam offset.

4. The method according to claim 3, characterized in that A plurality of materials are included in the sensing area of the optical fiber sensor, the wavelength offset includes a plurality of them, and different wavelength offsets correspond to different materials; The determining the main beam strain force corresponding to the wavelength offset according to the wavelength offset and the first correlation relationship includes: Determining a target wavelength offset of the material corresponding to the main beam from each of the wavelength offsets according to the relationship between the wavelength offset corresponding to different materials and the strain force and temperature; Determining the main beam strain force corresponding to the target wavelength offset according to the target wavelength offset and the first correlation relationship corresponding to the target wavelength offset.

5. The method according to claim 1, characterized in that, There are a plurality of the adjustment mechanisms, and there are a plurality of the optical fiber sensors. The positions of the respective adjustment mechanisms in the main mold are different, and the position of each adjustment mechanism corresponds to the position of each optical fiber sensor.

6. The method according to any one of claims 1 to 4, characterized in that, The actual offset includes the actual axial offset of the main beam in the main mold and the actual chordal offset of the main beam in the main mold; The outputting a prompt message when the actual offset is greater than the preset offset includes: Output a prompt message when any of the following conditions is met: The actual axial offset is greater than the reference axial offset; The actual chordal offset is greater than the reference chordal offset.

7. A position detection device for the main beam of a wind turbine blade, characterized in that, It includes: An acquisition module for acquiring the optical signal parameters collected by an optical fiber sensor, where the optical fiber sensor is embedded at a target position of the main mold of the wind turbine blade, and the target position corresponds to the placement position of the main beam in the main mold; A determination module for determining the actual offset of the main beam in the main mold according to the optical signal parameters; An output module for outputting a prompt message when the actual offset is greater than a preset offset, where the prompt message is used to indicate that the main beam is offset in the main mold; The device further includes: A generation module for generating a position adjustment instruction according to the difference between the actual offset and the preset offset when the actual offset is greater than the preset offset; A driving module for driving an adjustment mechanism according to the position adjustment instruction to adjust the position of the main beam through the adjustment mechanism so that the offset of the adjusted main beam is less than or equal to the preset offset, and the adjustment mechanism is integrated in the main mold.

8. A position detection device for the main beam of a wind turbine blade, characterized in that, It includes a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that, The computer program product is stored in a storage medium, and when the computer program product is executed by at least one processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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