An online monitoring device for large composite wind tube rotors

Abstract

The present invention provides an online monitoring device for a large composite material wind tube rotor, comprising a wind energy collector, a wind turbine system and a monitoring device. The wind energy collector, the wind turbine system and the monitoring device are all arranged on the top of a ship, the wind energy collector is connected to the monitoring device, and the monitoring device is connected to the wind turbine system. The monitoring device comprises an optical strain measurement system, which transmits real-time detected wind energy information to the monitoring device through the wind energy collector, and the optical strain measurement system monitors the displacement changes of the wind turbine system in real time, thereby realizing the visualization of the real-time 3D spatial morphological changes of the wind tube rotor. Through the online monitoring device for a large composite material wind tube rotor described in the present invention, the accuracy of the measured real-time displacement data of the wind tube rotor can be improved, the reliability and efficiency of the measurement of the wind tube rotor can be improved, data support can be provided for the system to accurately control the wind tube rotor, and the safe operation of the wind tube rotor can be effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wind-assisted rotor monitoring, and in particular to an online monitoring device for a large composite material wind tube rotor. Background Art

[0002] The IMO is currently increasing its energy efficiency requirements for commercial vessels. With rising international oil prices, large commercial ocean-going vessels are increasingly adopting wind energy technologies to improve energy efficiency and economic efficiency. The Flettner composite wind turbine rotor system, based on the Magnus effect, is an effective way to utilize wind energy-saving technology. However, this technology is currently in its early stages of promotion, and the industry lacks effective online monitoring technology and data on the actual operating conditions of wind turbine rotors. Therefore, improving online monitoring of wind turbine rotor operating conditions is of great significance.

[0003] Patent CN112161791A only involves obtaining the rotor operating status, structural safety and actual ship energy efficiency in real time through a long-term monitoring system for wind-assisted rotors. The system includes a main controller and modules controlled by the main controller. The wind-assisted rotor includes an inner tower, an outer cylinder, a base and a motor. The outer cylinder is sleeved on the motor and arranged inside the inner tower. The motor drives the outer cylinder to rotate. The speed sensor is installed on the inner tower to measure the actual speed and direction of the outer cylinder. A first data acquisition box is provided inside the inner tower, so that the wind-assisted rotor adaptive control algorithm can be optimized and wind-assisted rotor equipment failures can be predicted through big data analysis. However, there are still problems such as the heavy wind cylinder rotor and the unbalanced movement of the wind cylinder rotor, which cause distortion of the collected information, as well as the low accuracy of the technology for measuring the position offset of the wind cylinder rotor and the relatively abstract measurement results. The problem of ization; in patent CN209225373U, a ship wind propulsion and energy-saving control system is proposed, which includes: an environmental monitoring unit, a fuel consumption power unit, a rotor sail power unit, and an AI control unit. The environmental monitoring unit is arranged at the end of the ship. The environmental monitoring unit includes a meteorological sensor, a positioning system and a ship dynamic integrated sensor, which can collect information such as wind speed and wind direction. The multiple rotor sails in the system are evenly distributed in the middle of the ship. The rotor of the rotor sail is made of carbon fiber or glass fiber reinforced composite material, which solves the problem of the rotor being too heavy and affecting the accuracy of the rotor position offset measurement to a certain extent. However, it solves the problem that wind energy cannot be reasonably and effectively utilized in the existing ship propulsion technology, and does not solve the problem that the accuracy of the wind cylinder rotor position offset measurement technology is low and the measurement results are relatively abstract. Summary of the Invention

[0004] In view of this, the present invention aims to propose an online monitoring device for a large composite material wind tube rotor to solve the problems in the prior art that the real-time displacement data of the wind tube rotor measured under online operating conditions is of low accuracy, the results are abstract, and effective guarantees cannot be provided for product structure optimization and product safe operation; thereby improving the accuracy of the real-time displacement data of the wind tube rotor measured under online operating conditions, realizing the visualization of the real-time 3D spatial morphological changes of the wind tube rotor, realizing the real-time strain collection of the wind tube rotor and realizing the integration of wind resource working condition information-wind tube rotor spatial displacement-strain, thereby improving the reliability and efficiency of wind tube rotor measurement.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] The present invention relates to an online monitoring device for a large composite material wind turbine rotor, comprising a wind energy collector, a wind turbine system and a monitoring device. The wind energy collector, the wind turbine system and the monitoring device are all arranged on the top of a ship. The wind energy collector is connected to the monitoring device, which is in turn connected to the wind turbine system. The monitoring device includes an optical strain measurement system. Wind energy information detected in real time is transmitted to the monitoring device via the wind energy collector. The optical strain measurement system monitors the displacement changes of the wind turbine system in real time, thereby visualizing the real-time 3D spatial morphological changes of the wind turbine rotor.

[0007] Furthermore, the wind turbine system is arranged on the top of the deck of the ship, and the outer sides of the wind turbine system are respectively connected to the wind energy collector and the monitoring device. The wind turbine system includes a wind cylinder rotor and a rotor control system. The rotor control system is connected to the wind cylinder rotor, and the bottom of the wind cylinder rotor is connected to the deck of the ship through the base. The rotor control system is used to control the speed and direction of the wind cylinder rotor. The wind cylinder rotor is used to rotate freely with the help of the thrust of wind energy, and transmit the thrust to the hull through the bottom base to achieve energy saving of the ship.

[0008] Furthermore, the wind energy collector is arranged on the top of the deck of the ship. The wind energy collector adopts a piezoelectric cantilever beam wind energy collector, which is used to collect any one or more information of wind speed and wind direction in the ship's operating environment in real time, and convert the signal into an electrical signal and transmit it to the monitoring device. It can also record and store wind energy information with the system configured clock as the only time dimension.

[0009] Furthermore, the optical strain measurement system includes an optical strain measurement probe and a strain measurement device. The optical strain measurement probe is arranged outside the wind cylinder rotor, and there is a certain gap between the optical strain measurement probe and the wind cylinder rotor. The strain measurement device is arranged at a position corresponding to the optical strain measurement probe on the outer wall of the wind cylinder rotor.

[0010] Furthermore, the strain measurement device is polygonal and includes an optical speckle pattern, a polygonal target frame, and a special-shaped target point. The optical speckle pattern, the polygonal target frame, and the special-shaped target point are all arranged on the outer wall of the wind tube rotor. The polygonal target frame is arranged along the outer edge of the optical speckle pattern. Special-shaped target points are arranged at the intersection of two adjacent sides of the polygonal target frame to provide a reference point for the measurement of the optical strain measurement probe.

[0011] Furthermore, the optical strain measurement probe includes a first laser rangefinder and an optical element. The optical element and the first laser rangefinder system are integrated. The first laser rangefinder is used to measure the 3D position state of the irregular target point, and the optical element is used to sense the grayscale change of the optical speckle pattern.

[0012] Furthermore, the monitoring device also includes a three-dimensional laser ranging system, a bracket, a photoelectric information processor and a signal interactor. The three-dimensional laser ranging system is connected to the base through the bracket, and the three-dimensional laser ranging system is connected to the wind tube rotor. The photoelectric information processor is electrically connected to the three-dimensional laser ranging system, the optical strain measurement system, and the wind energy collector through the signal interactor, and is used to receive and process information transmitted by the three-dimensional laser ranging system, the optical strain measurement system, and the wind energy collector.

[0013] Furthermore, the three-dimensional laser ranging system includes a ranging probe and a laser target point. The base includes a positioning base target, the positioning base target is set on the top of the base, the ranging probe is set in the positioning base target through a bracket, the laser target point is set on the outer wall of the wind tube rotor, and the laser target point is set at a height L that is consistent with the ranging probe setting height H.

[0014] Furthermore, a clock oscillator is provided in the signal interactor to provide the system with a high-precision clock signal having a unique dimension.

[0015] Furthermore, the stereo laser ranging system adopts a phase laser rangefinder with a measurement accuracy of less than 1mm, and the phase laser rangefinder adopts a binocular acquisition unit, which has the ability to precisely measure the 3D position of the point.

[0016] Compared with the prior art, the large composite material wind tube rotor online monitoring device described in the present invention has the following beneficial effects:

[0017] This device effectively avoids the problems of low accuracy and abstract results of traditional single measurement technology of wind cylinder rotor position offset, can improve the accuracy of the measured real-time displacement data of the wind cylinder rotor under online operation conditions, realize the visualization of real-time 3D spatial morphological changes of the wind cylinder rotor, realize real-time strain collection of the wind cylinder rotor and realize the integration of wind resource working condition information-wind cylinder rotor spatial displacement-strain, improve the reliability and efficiency of wind cylinder rotor measurement, provide data support for the control system inside the wind cylinder rotor to accurately control the wind cylinder rotor, and is conducive to the overall optimization of the structure based on real-time detected online data, effectively ensure the safety of wind cylinder rotor operation, reduce the cost of wind cylinder rotor maintenance or replacement, reduce the possibility of imbalance during wind cylinder rotor rotation, and ensure the efficiency and authenticity of collected information. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0019] In the picture:

[0020] Figure 1 This is a schematic diagram of the working of a marine wind turbine rotor;

[0021] Figure 2 This is a schematic diagram of the principle of the wind tube rotor online monitoring system;

[0022] Figure 3 This is a partially enlarged schematic diagram of the strain measurement device.

[0023] Explanation of the accompanying symbols: 1. Ship; 2. Wind energy collector; 3. Wind turbine system; 4. Optoelectronic information processor; 5. Signal interactor; 6. Stereoscopic laser ranging system; 61. Ranging probe; 7. Optical strain measurement system; 70. Optical strain measurement probe; 71. First laser rangefinder; 8. Positioning base target; 9. Laser target point; 10. Optical speckle; 11. Polygonal target frame; 12. Special-shaped target point; 13. Base; 14. Wind turbine rotor; 15. Optical element; 16. Strain measurement device; 18. Monitoring device. DETAILED DESCRIPTION

[0024] The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0028] This embodiment is aimed at monitoring wind-assisted rotors. Similar to conventional wind-assisted rotor monitoring, the overall structure is composed of a motor, a wind tube, an environmental sensing system, and a rotor brake.

[0029] In the existing technology, due to the IMO organization's continuously increasing requirements for the energy efficiency coefficient of commercial ships and the rise in oil prices, large ocean-going ships use wind turbine-based rotor systems to achieve wind energy saving. However, there is currently a lack of effective wind turbine rotor online monitoring technology, and the displacement monitoring accuracy of the actual operating conditions of the wind turbine rotor is low. In addition, most of the collection devices are set on the outer wall of the wind turbine rotor, which makes the wind turbine rotor heavy and the wind turbine rotor movement unbalanced, causing the collection information to be distorted, affecting the accuracy of the measurement of the wind turbine rotor displacement change.

[0030] In order to solve the problem that the real-time displacement data of the wind turbine rotor measured in the existing technology under the online operation condition has low accuracy, the results are abstract, and it cannot provide effective protection for product structure optimization and product safe operation; this embodiment proposes an online monitoring device for a large composite wind turbine rotor, including a wind energy collector 2, a wind turbine system 3 and a monitoring device 18. The wind energy collector 2, the wind turbine system 3 and the monitoring device 18 are all arranged on the top of the ship 1, the wind energy collector 2 is connected to the monitoring device 18, and the monitoring device 18 is connected to the wind turbine system 3. The monitoring device 18 includes an optical strain measurement system 7, which transmits the real-time detected wind energy information to the monitoring device 18 through the wind energy collector 2. The optical strain measurement system 7 monitors the displacement changes of the wind turbine system 3 in real time, thereby realizing the visualization of the real-time 3D spatial morphological changes of the wind turbine rotor 14; the monitoring device 18 also includes an early warning system for transmitting fault early warning information in real time. In this embodiment, "top" refers to the end of the ship 1 away from the water surface or the end of the base 13 away from the deck.

[0031] The monitoring device 18 can effectively improve the accuracy of the real-time displacement data of the measured wind cylinder rotor 14 under online operating conditions, realize the visualization of the real-time 3D spatial morphological changes of the wind cylinder rotor 14, realize the real-time strain collection of the wind cylinder rotor 14 and realize the integration of wind resource working condition information-wind cylinder rotor 14 spatial displacement-strain, thereby improving the reliability and efficiency of the measurement of the wind cylinder rotor 14; the monitoring device 18 can also provide an intuitive basis for optimizing the wind cylinder rotor 14 control system by real-time online monitoring of the position changes of the wind cylinder rotor 14 during operation under specific wind conditions; and by detecting the strain changes of the wind cylinder rotor 14 body and the corresponding wind conditions, and comparing the product finite element analysis model, provide a solid basis for the optimization of the wind turbine system 3 product structure, and establish a product safety operation early warning system to ensure the safe and stable operation of the product, thereby continuously outputting clean power.

[0032] The wind turbine system 3 is arranged on the top of the deck of the ship 1. The outer sides of the wind turbine system 3 are respectively connected to the wind energy collector 2 and the monitoring device 18. At least one wind turbine system 3 is set. The wind turbine system 3 includes a wind cylinder rotor 14 and a rotor control system. The rotor control system is connected to the wind cylinder rotor 14. The bottom of the wind cylinder rotor 14 is connected to the deck of the ship 1 through the base 13. The rotor control system is used to control the speed and direction of the wind cylinder rotor 14. At least one wind cylinder rotor 14 is set. The wind cylinder rotor 14 is used to rotate freely with the help of the thrust of wind energy, and transmit the thrust to the hull through the bottom base 13 to achieve energy saving of the ship 1. In this embodiment, the "bottom" refers to the end of the wind cylinder rotor 14 close to the deck of the ship 1.

[0033] The provision of the wind-driven system 3 is conducive to reducing the use of power source oil of the ship 1, avoiding the cost consumption caused by excessively high oil prices during the navigation of the ship 1, saving the use of petroleum energy to a certain extent, and at the same time using wind energy to generate thrust, greatly improving the utilization of natural resources, and having the characteristics of being more environmentally friendly and energy-saving, greatly reducing the operating cost of the ship 1, improving the energy efficiency coefficient of the ship 1, and meeting the economic requirements of large commercial ocean-going ships 1.

[0034] The wind energy collector 2 is arranged on the top of the deck of the ship 1. The wind energy collector 2 adopts a piezoelectric cantilever beam wind energy collector, which is used to collect any one or more information of wind speed and wind direction in the operating environment of the ship 1 in real time, and convert the signal into an electrical signal and transmit it to the optoelectronic information processor 4 of the monitoring device 18. It can also record and store wind energy information with the system configured clock as the only time dimension.

[0035] The combined configuration of the wind energy collector 2 and the optoelectronic information processor 4 is conducive to the monitoring device 18 obtaining real-time wind energy information, facilitating real-time monitoring of environmental conditions, and timely transmitting information to the monitor according to environmental changes, so that the user can adjust the steering and speed of the ship's 1 wind turbine system 3 in a timely manner, thereby improving the energy efficiency of the ship 1, effectively saving energy and reducing emissions, being more conducive to environmental protection, improving the protection of the marine water quality environment, and enhancing the detection efficiency of the monitoring device 18 and improving the accuracy of the monitoring device 18.

[0036] The monitoring device 18 also includes a three-dimensional laser ranging system 6, a bracket, a photoelectric information processor 4 and a signal interactor 5. At least one bracket is provided. The three-dimensional laser ranging system 6 is connected to the base 13 through the bracket, and the three-dimensional laser ranging system 6 is connected to the wind tube rotor 14. The photoelectric information processor 4 is electrically connected to the three-dimensional laser ranging system 6, the optical strain measurement system 7, and the wind energy collector 2 through the signal interactor 5, and is used to receive and process information transmitted by the three-dimensional laser ranging system 6, the optical strain measurement system 7, and the wind energy collector 2; wherein, a clock oscillator is provided in the signal interactor 5, which is used to equip the system with a high-precision clock signal with a unique dimension.

[0037] Through the setting of the signal interactor 5, the collected analog signals are effectively converted into digital signals and transmitted to the photoelectric information processor 4, which greatly saves the processing speed of the photoelectric information processor 4. It can also equip the monitoring device 18 with a high-precision clock signal with a unique dimension, which is convenient for distinguishing between each collected signal and avoids the possibility of errors caused by the use of external clock signals. It is beneficial to improve the reliability and stability of the monitoring device 18, and can further improve the accuracy of monitoring the wind turbine system 3 and improve the safety and stability of the operation of the wind turbine system 3.

[0038] The three-dimensional laser ranging system 6 includes a ranging probe 61 and a laser target point 9. The base 13 includes a positioning base target 8. The positioning base target 8 is set on the top of the base 13. The ranging probe 61 is set in the positioning base target 8 through a bracket. The laser target point 9 is set on the outer wall of the wind cylinder rotor 14. The setting height L of the laser target point 9 is consistent with the setting height H of the ranging probe 61. The ranging probe 61 accurately measures the spatial position of the laser target point 9 under different operating conditions, thereby recording the spatial displacement of the wind cylinder rotor 14; wherein, the bracket is a rigid bracket, the laser target point 9 is a flexible material, and the laser target point 9 is attached to the outer wall of the wind cylinder rotor 14 by a self-adhesive sticker. The laser target point At least one punctuation point 9 is set, and the laser target point 9 is distributed along the circumference of the outer wall of the wind cylinder rotor 14, and each laser target point 9 is marked with unique information. The laser target point 9 can realize synchronous operation with the wind cylinder rotor 14. The three-dimensional laser ranging system 6 adopts a phase-type laser rangefinder with a measurement accuracy of less than 1mm, and the phase-type laser rangefinder adopts a binocular acquisition unit, which has the ability to precisely measure the 3D position of the point. In this embodiment, "L" refers to the distance between the setting position of the laser target point 9 on the outer wall of the wind cylinder rotor 14 and the top of the base 13, "H" refers to the distance between the setting position of the ranging probe 61 and the top of the base 13, and the "self-adhesive" is a conventional glue product on the market.

[0039] The setting of the three-dimensional laser ranging system 6 is conducive to reducing the weight of the wind cylinder rotor 14 and improving the accuracy of measuring the operating condition of the wind cylinder rotor 14. The three-dimensional laser ranging system 6 is divided into a ranging probe 61 and a laser target point 9, so as to realize partial separation of the ranging system and the wind cylinder rotor 14, thereby avoiding the accuracy of measurement by the ranging probe 61, improving the reliability of monitoring by the monitoring device 18, and further improving the operating safety of the wind cylinder rotor 14. The separation of the ranging probe 61 and the wind cylinder rotor 14 can also facilitate the maintenance of the monitoring device 18, thereby realizing that the wind cylinder rotor 14 can be kept in the maintenance process of the ranging device. 14 can still operate uninterruptedly, reducing the impact of the maintenance monitoring device 18 on the operation of the ship 1, and greatly improving the efficiency of maintenance. The laser target point 9 is adhered to the outer surface of the wind cylinder rotor 14 using conventional market self-adhesive stickers. The laser target point 9 accompanies the operation of the wind cylinder rotor 14 and serves as the detection point of the three-dimensional laser ranging system 6. A laser test signal is simultaneously sent to the three-dimensional laser ranging system 6 through the signal interactor 5 to collect the spatial displacement of the laser target point 9, and the detected laser detection signal is transmitted to the photoelectric information processor 4 to monitor the real-time displacement of the wind cylinder rotor 14 throughout the entire process.

[0040] At least one ranging probe 61 is provided, and the ranging probe 61 is fixed in the base 13 on the top of the deck of the ship 1 through a bracket. During the entire measurement process, the spatial displacement of the ranging probe 61 relative to the base 13 is less than 10 μm, that is, the distance between the plane where the ranging probe 61 is located and the plane where the base 13 is located is less than 10 μm. Multiple ranging probes 61 are dispersed around the outside of the wind cylinder rotor 14. The multiple ranging probes 61 are calibrated between each other's ranging probes 61 by setting positioning base targets 8 scattered on the top of the base 13. In addition, the ranging probes 61 after position calibration transmit the calibrated position information data to the optoelectronic information processor 4. After software processing, the precise spatial position distribution of the laser ranging probes 61 can be achieved. Then, calibration measurements are performed before and after the wind cylinder rotor 14 is operated to compare the position deviation of the wind cylinder rotor 14. Preferably, the spatial displacement of the ranging probe 61 relative to the base 13, that is, the spatial position deviation value is less than 10 μm; wherein, preferably, the three-dimensional laser ranging system 6 is composed of at least three ranging probes 61, the ranging probe 61 is a laser ranging probe, the ranging probe 61 uses the time dimension of the system displacement as a recording carrier, and inputs the measurement result into the photoelectric information processor 4, the detection frequency of the ranging probe 61 is not less than 300 Hz, and the ranging probe 61 is evenly distributed around the circumference of the wind cylinder rotor 14, the distance between the ranging probe 61 and the wind cylinder rotor 14 is M, and the value range of M is usually a few meters to more than ten meters, that is, the value range of M is 1m-19m, at least three positioning base targets 8 are set, and the positioning base targets 8 are scattered and arranged on the top of the base 13 of the platform, and the positions of the three positioning base targets 8 cannot form a straight line; in this embodiment, the value of M needs to be adjusted according to the measurement range of the ranging probe 61, and the measurement range of the three-dimensional laser ranging system 6 is required to completely cover the circumferential direction area of the wind cylinder rotor 14 and the corresponding position of the three-dimensional laser ranging system 6.

[0041] The setting of the distance measuring probe 61 is conducive to full coverage of the outer side of the wind cylinder rotor 14, improving the efficiency of monitoring the wind cylinder rotor 14, realizing real-time monitoring of the wind cylinder rotor 14, and improving the accuracy of the monitoring data of the wind cylinder rotor 14. On the one hand, it greatly improves the real-time feedback on the operation safety of the wind cylinder rotor 14. On the other hand, it effectively enhances the reliability of the monitoring device 18, realizes the online real-time operation parameter data collection and presentation of the wind cylinder rotor 14, and the adjustable setting of the distance between the distance measuring probe 61 and the wind cylinder rotor 14 effectively improves the flexibility of the monitoring device 18, avoids the problem that the monitoring range of the distance measuring probe 61 cannot cover the circumferential direction of the wind cylinder rotor 14, and also has the effect of reducing the number of distance measuring probes 61 used, saving costs, and thus saving the use of electricity. In addition, the distance measuring probe 61 accurately measures the spatial position of the laser target point 9, and then records the spatial displacement of the wind cylinder rotor 14. The change amount greatly improves the measurement accuracy of the device, and can also avoid the shortcomings of low accuracy and abstract results of the traditional single-point measurement of the position offset of the wind cylinder rotor 14, realize 3D visualization of multi-point displacement, and avoid the problems existing in the traditional strain acquisition technology. For example, when using strain gauges or optical fiber technology, the bulky collector must be installed and fixed on the outer wall of the wind cylinder, which can easily cause dynamic imbalance of the wind cylinder rotor 14 and cause distortion of the collected information. The monitoring device 18 adopts contactless and strain acquisition, which effectively realizes efficient, true and real-time reproduction of data acquisition; the three-dimensional laser ranging system 6 is randomly distributed in multiple positioning base targets 8 on the top of the base 13, and the spatial positions of the ranging probes 61 are determined by interactive measurement of the ranging probes 61, and the complete displacement changes of the circumferential direction of the wind cylinder rotor 14 are measured in coordination with the laser target point 9.

[0042] The optical strain measurement system 7 includes an optical strain measurement probe 70 and a strain-to-be-measured device 16. The optical strain measurement probe 70 is disposed outside the wind cylinder rotor 14 with a certain gap between the optical strain measurement probe 70 and the wind cylinder rotor 14. The strain-to-be-measured device 16 is disposed on the outer wall of the wind cylinder rotor 14 at a position corresponding to the optical strain measurement probe 70. The optical strain measurement system 7 has an acquisition frequency greater than or equal to 500 Hz, and uses digital processing technology to calculate the real-time strain data of the wind cylinder rotor 14 using the grayscale value image acquired by the optical strain measurement probe 70. The data is then transmitted to the optoelectronic information processor 4 for storage in the system's unique time dimension. The maximum allowable strain alarm system can also be set according to an algorithm. After subsequent algorithm processing, the wind force-wind cylinder rotor 14 displacement-strain relationship is output, thereby enabling the wind turbine system 3 product structure and control system to be optimized by comparing the finite element model analysis results of the wind turbine system 3 product.

[0043] The setting of the optical strain measurement system 7 is beneficial to provide a second level of monitoring protection for the monitoring device 18, improve the accuracy of the monitoring device 18, and enhance the working efficiency of the monitoring device 18, so that the monitoring device 18 can effectively determine the spatial form of the surface of the area to be measured outside the wind cylinder rotor 14, which is beneficial to provide effective protection for the safe operation of the wind cylinder rotor 14.

[0044] The strain measurement device 16 is polygonal and includes an optical speckle 10, a polygonal target frame 11, and a special-shaped target point 12. The optical speckle 10, the polygonal target frame 11, and the special-shaped target point 12 are all arranged on the outer wall of the wind tube rotor 14. The polygonal target frame 11 is arranged along the outer edge of the optical speckle 10. Special-shaped target points 12 are arranged at the intersection of two adjacent sides of the polygonal target frame 11 to provide reference points for the measurement of the optical strain measurement probe 70. The polygonal target frame 11 is made of lightweight conformable rigid material. The material of the polygonal target frame 11 includes any one or more of hard conformable thin plastic and conformable carbon fiber products. The light weight of the polygonal target frame 11 material has a negligible effect on the dynamic balance of the wind tube rotor 14, and except for the vertex of one adjacent side selected by the polygonal target frame 11, the vertex of the two adjacent sides is bonded. In addition to being firmly bonded to the wind tube rotor 14, the vertices of two adjacent sides of the polygonal target frame 11 are bonded to the wind tube rotor 14 via adhesive. The deformation of the adhesive is allowed to exceed 10%, and the strain of the wind tube rotor 14 itself does not affect the bonding effect. Then, by measuring the fixed-point changes of the polygonal target frame 11, the algorithm calculates the macroscopic morphological changes of the surface of the wind tube rotor 14 in the test area, providing correction parameters for optical technology strain detection. In this embodiment, the polygon refers to a plane figure with at least three sides, such as a triangle or a quadrilateral, and the polygonal shape of the strain test device 16 is a shape type selected based on the size of the test area. The length of each single side of the polygon of the strain test device 16 is ≤100 mm. The area where the optical speckle 10 is located is the test area, and the range of the area where the optical speckle 10 is located is the speckle pattern setting.

[0045] The dispersed arrangement of the optical speckle 10, the polygonal target frame 11 and the special-shaped target point 12 is conducive to enhancing the visualization of the area to be measured, realizing the visualization of the real-time 3D spatial morphological changes of the wind cylinder rotor 14, realizing the real-time strain collection of the wind cylinder rotor 14 and realizing the integration of wind resource working condition information - wind cylinder rotor 14 spatial displacement - strain, providing data support for the control system inside the wind cylinder rotor 14 to accurately control the wind cylinder rotor 14, and facilitating the overall optimization of the structure based on the online data of real-time detection; the optical speckle 10 is painted in advance on a specific area of the wind cylinder rotor 14 as a mark, and the polygonal target frame 11 is pasted on the periphery of the optical speckle 10, and the special-shaped target point 12 is set at the vertex of the polygonal target frame 11. 2. When the wind tube rotor 14 is in operation, the optical strain measurement probe 70 measures the distance to the irregular target point 12 and processes the signal to characterize the spatial form of the surface of the area enclosed by the polygonal target frame 11, thereby eliminating macroscopic deformation of the strain measurement area. The optical strain measurement probe 70 detects the grayscale value of the optical speckle 10 and the difference between the grayscale value and the grayscale value when the wind tube rotor 14 is stationary, eliminating macroscopic deformation. The optoelectronic information processor 4 calculates the precise strain change in the selected area, thereby achieving effective online monitoring of the wind tube rotor 14. The real-time displacement and strain data of the wind tube rotor 14 under online operation conditions are collected. Combined with wind operating conditions, this data provides effective support for product structure optimization and safe operation.

[0046] The optical strain measurement probe 70 includes a first laser rangefinder 71 and an optical element 15. The optical element 15 and the first laser rangefinder 71 are integrated into a system. The first laser rangefinder 71 is used to measure the 3D position of the irregular target points 12 at the vertices of two adjacent sides of the polygonal target frame 11 of the strain measurement device 16. The algorithm is used to determine the spatial morphology of the surface of the selected area of the polygonal target frame 11. This is then compared with any one or more of the position change information and angle change information of the wind cylinder rotor 14 from the first laser rangefinder 71 when the wind cylinder rotor 14 is stationary. This information can determine the macroscopic morphological changes of the surface of the measured area of the wind cylinder rotor 14. The macroscopic morphological changes of the surface refer to any one or more of the changes in the surface angle and the surface position. The optical element 15 is used to sense the grayscale changes of the optical speckle 10 pattern.

[0047] By setting up the first laser rangefinder 71 and the optical element 15 separately, the weight of the wind cylinder rotor 14 can be effectively reduced, and the increase in the weight of the wind cylinder rotor 14 caused by the optical strain measurement probe 70 being directly installed on the wind cylinder rotor 14 can be avoided, which in turn affects the measurement of data of the wind cylinder rotor 14 under the motion condition by the monitoring device 18. In addition, the integrated setting of the optical element 15 and the first laser rangefinder 71 system can realize the integration of wind resource working condition information-wind cylinder rotor 14 spatial displacement-strain, compare the finite element analysis results, and realize the optimization of the directional structural setting, thereby greatly improving the monitoring efficiency of the device, realizing real-time strain collection of the wind cylinder rotor 14, and the collection equipment does not have to be attached to the wind cylinder rotor 14. The operation is simple, efficient, and reliable. It can also realize the visualization of the real-time 3D spatial morphological changes of the wind cylinder rotor 14, providing a useful reference for the optimization of the control system setting of the wind cylinder rotor 14.

[0048] Working principle: The monitoring device 18 is mainly used to detect the displacement trajectory and local strain changes of the wind cylinder rotor 14 in actual operating conditions, and combined with the wind resource parameters detected in the natural environment, through the simultaneous collection of displacement and strain data, and compared with the finite element verification analysis results of the wind cylinder rotor 14, the wind cylinder rotor 14 control system is optimized, and it has extremely important reference value for the product structural design safety and lightweight design optimization. By observing the product strain, the wind cylinder rotor 14 structural safety is warned in advance to ensure the safe and stable operation of the product and the continuous output of clean power.

[0049] In the present invention, for any wind-assisted rotor monitoring, it can include a large composite material wind tube rotor online monitoring device structure described in this embodiment, and based on the relevant structures and assembly relationships of the wind tube rotor 14, rigid bracket, and optoelectronic information processor 4 provided in this embodiment, the wind-assisted rotor monitoring also includes conventional components including motors, wind tubes, environmental sensing systems, rotor brakes and other structures. Since they are all existing technologies, they will not be described here in detail.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An online monitoring device for large composite wind tube rotors, characterized in that: The invention comprises a wind energy collector (2), a wind turbine system (3) and a monitoring device (18), wherein the wind energy collector (2), the wind turbine system (3) and the monitoring device (18) are all arranged on the top of the ship (1), the wind energy collector (2) is connected to the monitoring device (18), and the monitoring device (18) is connected to the wind turbine system (3), and the monitoring device (18) comprises an optical strain measurement system (7), which transmits wind energy information detected in real time to the monitoring device (18) through the wind energy collector (2), and the optical strain measurement system (7) monitors the displacement change of the wind turbine system (3) in real time, thereby realizing the visualization of the real-time 3D spatial morphological change of the wind tube rotor (14); The optical strain measurement system (7) comprises an optical strain measurement probe (70) and a strain measurement device (16); the optical strain measurement probe (70) is arranged outside the wind tube rotor (14); a certain gap is provided between the optical strain measurement probe (70) and the wind tube rotor (14); and the strain measurement device (16) is arranged at a position on the outer wall of the wind tube rotor (14) corresponding to the optical strain measurement probe (70); The strain measurement device (16) is polygonal and includes an optical speckle (10), a polygonal target frame (11) and a special-shaped target point (12). The optical speckle (10), the polygonal target frame (11) and the special-shaped target point (12) are all arranged on the outer wall of the wind tube rotor (14). The polygonal target frame (11) is arranged along the outer edge of the optical speckle (10). The special-shaped target point (12) is arranged at the intersection of two adjacent sides of the polygonal target frame (11) to provide a reference point for the measurement of the optical strain measurement probe (70). In addition, the monitoring device (18) also includes a three-dimensional laser ranging system (6), a bracket, an optoelectronic information processor (4) and a signal interactor (5).

2. The large composite material wind tube rotor online monitoring device according to claim 1 is characterized in that: The wind turbine system (3) is arranged on the top of the deck of the ship (1). The outer side of the wind turbine system (3) is respectively connected to the wind energy collector (2) and the monitoring device (18). The wind turbine system (3) includes a wind tube rotor (14) and a rotor control system. The rotor control system is connected to the wind tube rotor (14). The bottom of the wind tube rotor (14) is connected to the deck of the ship (1) through a base (13). The rotor control system is used to control the speed and direction of the wind tube rotor (14). The wind tube rotor (14) is used to rotate freely with the help of the thrust of wind energy and transmit the thrust to the hull through the bottom base (13), thereby achieving energy saving of the ship.

3. The large composite material wind tube rotor online monitoring device according to claim 2 is characterized in that: The wind energy collector (2) is arranged on the top of the deck of the ship (1). The wind energy collector (2) adopts a piezoelectric cantilever beam wind energy collector, which is used to collect any one or more information of wind speed and wind direction in the operating environment of the ship (1) in real time, and convert the signal into an electrical signal and transmit it to the monitoring device (18). It can also record and store wind energy information using the clock configured by the system as the only time dimension.

4. The large composite material wind tube rotor online monitoring device according to claim 1 is characterized in that: The optical strain measurement probe (70) comprises a first laser rangefinder (71) and an optical element (15), wherein the optical element (15) and the first laser rangefinder (71) are integrated into a system, wherein the first laser rangefinder (71) is used to measure the 3D position state of the irregular target point (12), and the optical element (15) is used to sense the grayscale change of the optical speckle (10) pattern.

5. The large composite material wind tube rotor online monitoring device according to claim 2 is characterized in that: The stereoscopic laser ranging system (6) is connected to the base (13) via a bracket, the stereoscopic laser ranging system (6) is connected to the wind tube rotor (14), and the photoelectric information processor (4) is electrically connected to the stereoscopic laser ranging system (6), the optical strain measurement system (7), and the wind energy collector (2) via a signal exchanger (5), and is used to receive and process information transmitted by the stereoscopic laser ranging system (6), the optical strain measurement system (7), and the wind energy collector (2).

6. The large composite material wind tube rotor online monitoring device according to claim 5 is characterized in that: The three-dimensional laser ranging system (6) comprises a ranging probe (61) and a laser target point (9); the base (13) comprises a positioning base target (8); the positioning base target (8) is arranged on the top of the base (13); the ranging probe (61) is arranged in the positioning base target (8) through a bracket; the laser target point (9) is arranged on the outer side wall of the wind tube rotor (14); and the setting height L of the laser target point (9) is consistent with the setting height H of the ranging probe (61).

7. The large composite material wind tube rotor online monitoring device according to claim 5 is characterized in that: A clock oscillator is provided in the signal interactor (5) for equipping the system with a high-precision clock signal having a unique dimension.

8. The large composite material wind tube rotor online monitoring device according to claim 6 is characterized in that: The stereo laser distance measurement system (6) adopts a phase laser distance meter with a measurement accuracy of less than 1 mm, and the phase laser distance meter adopts a binocular collection unit and has the ability to accurately measure the 3D position of a point.

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