Wireless monitoring device for health monitoring of fan blade structure

Abstract

The utility model provides a wireless monitoring device for health monitoring of a fan blade structure, and belongs to the technical field of wind power generation detection. The wireless monitoring device for health monitoring of the fan blade structure comprises a fan body, a main shaft is installed at one end of the fan body, a plurality of connecting assemblies are arranged on the inner wall of the main shaft, a data collection mechanism is connected between the connecting assemblies, and each connecting assembly comprises a fixing base, a damper, a spring and a connecting plate. A damper is installed on one side of the fixing base, a connecting plate is installed at the output end of the damper, one side of the connecting plate is connected with the outer wall of the data collecting mechanism, a spring is arranged on the outer wall of the damper in a sleeving mode, and a monitoring system is arranged in the data collecting mechanism. And the monitoring system comprises an induction receiving module, a data collection module, a data storage module and a wireless sending module, blades are installed on the outer wall of the main shaft, and hollow cavities are formed in the blades.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation detection, and more specifically, to a wireless monitoring device for structural health monitoring of wind turbine blades. Background Art

[0002] Due to the characteristics of being clean, safe, and renewable, wind energy has become a research and development hotspot in various countries. In the process of converting wind energy into electrical energy, wind turbines play a key role. The wind turbine blades, which are key components, are continuously impacted by alternating loads such as aerodynamic forces and inertial forces during operation, resulting in irregular swings and torsional deformations. Extreme weather conditions such as sandstorms and low temperatures will exacerbate the abnormal vibrations and rapid deformations of the blades and cause icing, which easily leads to cracks in the blades. In the light case, the output of the unit will decrease, and in the severe case, the entire blade will break and fail, threatening the safe production of the unit. After retrieval, a wind turbine blade vibration state monitoring device is disclosed in a Chinese patent with the authorized announcement number CN213870131U, which includes a vibration data acquisition device, a vibration data transceiver device, and a rotational speed monitoring device. The vibration data acquisition device is arranged inside each blade and is used to collect the vibration data of each blade. The vibration data transceiver device is located inside the wind turbine hub and is used to receive the collected blade vibration data and wirelessly transmit the vibration data of each blade to a ring network switch. The rotational speed monitoring device is installed inside the wind turbine nacelle and is used to collect the blade rotational speed data and wirelessly transmit the rotational speed data to the ring network switch. The ring network switch is arranged inside the nacelle, and the ring network switch uploads the received data to the booster station data server. The wind turbine blade vibration state acquisition device used in the utility model adopts a special installation and processing method to achieve stable data transmission.

[0003] However, in the actual use process of this solution, the data collection mechanism is simply assembled on the wind power generation equipment. Due to the lack of corresponding vibration reduction and strengthening fastening structures, the data collection mechanism may become loose during use, which is not conducive to the normal use of the wind power generation equipment.

[0004] Therefore, we have made improvements in this regard and proposed a wireless monitoring device for structural health monitoring of wind turbine blades. Content of the Utility Model

[0005] In order to solve the problem that the existing device is prone to looseness during use, the utility model provides a wireless monitoring device for structural health monitoring of wind turbine blades.

[0006] The utility model is implemented as follows:

[0007] A wireless monitoring device for structural health monitoring of a fan blade, including a fan body. One end of the fan body is equipped with a main shaft. The inner wall of the main shaft is provided with several connecting components. A data collection mechanism is connected between several connecting components. The connecting components include a fixed seat, a damper, a spring, and a connecting plate. One side of the fixed seat is equipped with a damper. The output end of the damper is equipped with a connecting plate. One side of the connecting plate is connected to the outer wall of the data collection mechanism. The outer wall of the damper is sleeved with a spring. The internal of the data collection mechanism is provided with a monitoring system. The monitoring system includes an induction receiving module, a data collection module, a data storage module, and a wireless transmission module.

[0008] Further, the outer wall of the main shaft is equipped with blades, and the inside of the blades is provided with a hollow chamber.

[0009] The beneficial effect of adopting the above further scheme is that by setting a hollow chamber inside the blade, while reducing the self-weight of the blade, it is also convenient to provide space for the installation of the biaxial vibration sensor.

[0010] Further, several biaxial vibration sensors are arranged inside the hollow chamber. The output ends of several biaxial vibration sensors are respectively connected with fixed shafts. One ends of the two fixed shafts are respectively connected to the inner wall of the hollow chamber.

[0011] The beneficial effect of adopting the above further scheme is that through the connection and use of two fixed shafts, the biaxial vibration sensor can detect the double layers of the inner wall of the blade, thereby improving the detection accuracy.

[0012] Further, several biaxial vibration sensors are equally spaced from each other and are respectively located at both ends and the middle of the blade.

[0013] The beneficial effect of adopting the above further scheme is that by utilizing the positional distribution relationship between the biaxial vibration sensors, it can achieve a more comprehensive vibration detection of the blade.

[0014] Further, a wireless signal transmitter is arranged between several biaxial vibration sensors and the data collection mechanism.

[0015] The beneficial effect of adopting the above further scheme is that through the setting of the wireless signal transmitter, it is convenient for the biaxial vibration sensor to transmit data to the data collection mechanism.

[0016] Further, the induction receiving module, the data collection module, the data storage module, and the wireless transmission module are sequentially connected for data transmission.

[0017] Further, a signal transceiver is formed between the induction receiving module and the wireless transmission module, and a data processor is formed between the data collection module and the data storage module.

[0018] The beneficial effects of adopting the above further solution are as follows. Through the setting of the signal transceiver, the signal reception and transmission between the induction receiving module and the wireless transmission module are made more convenient. At the same time, through the setting of the data processor, it is beneficial to store and process the detected data.

[0019] Furthermore, bolts are threadedly connected to both sides of the fixing seat, and the fixing seat is connected to the inner wall of the main shaft through the bolts.

[0020] The beneficial effects of adopting the above further solution are as follows. Through the connection and use of the bolts, the fixing seat and the main shaft form a detachable connection, thus facilitating the disconnection of the connection component from the main shaft.

[0021] The beneficial effects of the present utility model are as follows. Through the coordinated use of the main shaft, the connection component and the data collection mechanism, the data collection mechanism in the device is more stably fixed on the fan equipment. Among them, through the connection and use of the fixing seat, one end of multiple dampers can be fixedly positioned with the data collection mechanism through the connecting plate. Then, through the elastic action of the spring, the data collection mechanism located inside the main shaft is kept stable, effectively reducing the adverse effects brought by the mechanical vibration of the fan body itself. And by setting a monitoring system inside the data collection mechanism, it wirelessly transmits the detected data through the wireless transmission module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 A three-dimensional view of a wireless monitoring device for monitoring the structural health of a fan blade provided by the present utility model;

[0024] Figure 2 A cross-sectional view of the main shaft structure of a wireless monitoring device for monitoring the structural health of a fan blade provided by the present utility model;

[0025] Figure 3 An enlarged schematic view of the connection component of a wireless monitoring device for monitoring the structural health of a fan blade provided by the present utility model;

[0026] Figure 4 A cross-sectional view of the blade structure of a wireless monitoring device for monitoring the structural health of a fan blade provided by the present utility model;

[0027] Figure 5 System module block diagram of a wireless monitoring device for structural health monitoring of a fan blade provided by the present utility model.

[0028] In the figure: 100, fan body; 200, main shaft; 300, blade; 400, data collection mechanism; 500, connection component; 5001, fixed seat; 5002, damper; 5003, spring; 5004, connecting plate; 600, fixed shaft; 700, biaxial vibration sensor; 101, monitoring system; 10101, induction receiving module; 10102, data collection module; 10103, data storage module; 10104, wireless transmission module. Specific embodiments

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0030] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0031] Example 1

[0032] Please refer to Figures 1-5, the present utility model provides a technical solution: a wireless monitoring device for structural health monitoring of a fan blade, including a fan body 100, one end of the fan body 100 is installed with a main shaft 200, the inner wall of the main shaft 200 is provided with a plurality of connection components 500, a data collection mechanism 400 is connected between the plurality of connection components 500, the connection component 500 includes a fixed seat 5001, a damper 5002, a spring 5003 and a connecting plate 5004, one side of the fixed seat 5001 is installed with the damper 5002, the output end of the damper 5002 is installed with the connecting plate 5004, one side of the connecting plate 5004 is connected to the outer wall of the data collection mechanism 400, the outer wall of the damper 5002 is sleeved with the spring 5003, the inside of the data collection mechanism 400 is provided with a monitoring system 101, the monitoring system 101 includes an induction receiving module 10101, a data collection module 10102, a data storage module 10103 and a wireless transmission module 10104. Through the connection and use of the fixed seat 5001, one end of a plurality of dampers 5002 can be fixedly positioned with the data collection mechanism 400 through the connecting plate 5004. Then, through the elastic action of the spring 5003, the data collection mechanism 400 located inside the main shaft 200 is kept stable, effectively reducing the adverse effects brought by the mechanical vibration of the fan body 100 itself. And by arranging the monitoring system 101 inside the data collection mechanism 400, the detected data is wirelessly transmitted through the wireless transmission module 10104.

[0033] Embodiment 1

[0034] Please refer to Figures 1-5 , as an embodiment of the present utility model, further, the outer wall of the main shaft 200 is installed with blades 300, and the inside of the blades 300 is provided with a hollow chamber. By arranging the hollow chamber inside the blades 300, while reducing the self-weight of the blades 300, it is also convenient to provide space for the installation of the biaxial vibration sensors 700. A plurality of biaxial vibration sensors 700 are arranged inside the hollow chamber, the output ends of the plurality of biaxial vibration sensors 700 are respectively connected with fixed shafts 600, and one ends of the two fixed shafts 600 are respectively connected to the inner wall of the hollow chamber. Through the connection and use of the two fixed shafts 600, the biaxial vibration sensors 700 can detect the double layers of the inner wall of the blades 300, thereby improving the monitoring accuracy. The plurality of biaxial vibration sensors 700 are equally spaced from each other and are respectively located at both ends and the middle of the blades 300. By utilizing the positional distribution relationship between the biaxial vibration sensors 700, more comprehensive vibration detection of the blades 300 can be realized. A wireless signal transmitter is arranged between the plurality of biaxial vibration sensors 700 and the data collection mechanism 400. Through the setting of the wireless signal transmitter, it is convenient for the biaxial vibration sensors 700 to transmit data to the data collection mechanism 400.

[0035] Embodiment 3

[0036] Please refer to Figures 1-5 Figures 1-5 , as an embodiment of the present utility model, further, the induction receiving module 10101, the data collection module 10102, the data storage module 10103 and the wireless transmission module 10104 are sequentially connected for data transmission. A signal transceiver is formed between the induction receiving module 10101 and the wireless transmission module 10104, and the data collection module 10102 and the data storage module 10103 form a data processor. Through the setting of the signal transceiver, it is more convenient for the induction receiving module 10101 and the wireless transmission module 10104 to receive and transmit signals. At the same time, through the setting of the data processor, it is beneficial to store and process the detected data. Bolts are threadedly connected to both sides of the fixing base 5001, and the fixing base 5001 is connected to the inner wall of the main shaft 200 through the bolts. Through the connection and use of the bolts, the fixing base 5001 and the main shaft 200 are detachably connected, so as to facilitate the disconnection of the connecting component 500 from the main shaft 200.

[0037] Specifically, the working principle of the wireless monitoring device for the structural health monitoring of the fan blade: When in use, first, check whether the structure of the device is intact. After ensuring that the structure is intact, then put it into use. Among them, a plurality of dampers 5002 are fixed through different fixing bases 5001, so that one end thereof can be fixedly positioned with the data collection mechanism 400 through the connecting plate 5004. Then, through the elastic action of the spring 5003, the data collection mechanism 400 located inside the main shaft 200 is kept stable, effectively reducing the adverse effects brought by the mechanical vibration of the fan body 100 itself. And by arranging a monitoring system 101 inside the data collection mechanism 400, the detected data is wirelessly transmitted through the wireless transmission module 10104. And through the setting of the signal transceiver, it is more convenient for the induction receiving module 10101 and the wireless transmission module 10104 to receive and transmit signals. At the same time, through the setting of the data processor, it is beneficial to store and process the detected data. Secondly, by arranging a hollow chamber inside the blade 300, while reducing the self-weight of the blade 300, it is also convenient to provide space for the installation of the biaxial vibration sensor 700. Then, through the connection and use of two fixing shafts 600, the biaxial vibration sensor 700 can detect the double layers of the inner wall of the blade 300, thereby improving the monitoring accuracy. At the same time, by utilizing the positional distribution relationship between the biaxial vibration sensors 700, more comprehensive vibration detection of the blade 300 can be realized.

[0038] It should be noted that the specific model and specification of the biaxial vibration sensor 700 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail here.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A wireless monitoring device for structural health monitoring of a fan blade, comprising a fan body (100), characterized in that, One end of the fan body (100) is installed with a main shaft (200). Inside the inner wall of the main shaft (200), there are several connecting components (500). A data collection mechanism (400) is connected between several of the connecting components (500). The connecting component (500) includes a fixed seat (5001), a damper (5002), a spring (5003), and a connecting plate (5004). One side of the fixed seat (5001) is installed with a damper (5002). The output end of the damper (5002) is installed with a connecting plate (5004). One side of the connecting plate (5004) is connected to the outer wall of the data collection mechanism (400). The outer wall of the damper (5002) is sleeved with a spring (5003). Inside the data collection mechanism (400), there is a monitoring system (101). The monitoring system (101) includes an induction receiving module (10101), a data collection module (10102), a data storage module (10103), and a wireless transmission module (10104).

2. The wireless monitoring device for structural health monitoring of a fan blade according to claim 1, characterized in that, On the outer wall of the main shaft (200), there are blades (300) installed. Inside the blades (300), there are hollow chambers.

3. The wireless monitoring device for structural health monitoring of a fan blade according to claim 2, characterized in that, Inside the hollow chamber, there are several biaxial vibration sensors (700). The output ends of several of the biaxial vibration sensors (700) are respectively connected to fixed shafts (600). One end of two of the fixed shafts (600) is respectively connected to the inner wall of the hollow chamber.

4. The wireless monitoring device for structural health monitoring of a wind turbine blade according to claim 3, characterized in that, Several of the biaxial vibration sensors (700) are equally spaced from each other and are respectively located at both ends and the middle of the blade (300).

5. The wireless monitoring device for structural health monitoring of a wind turbine blade according to claim 4, characterized in that, There is a wireless signal transmitter between several of the biaxial vibration sensors (700) and the data collection mechanism (400).

6. The wireless monitoring device for structural health monitoring of a wind turbine blade according to claim 1, wherein The induction receiving module (10101), the data collection module (10102), the data storage module (10103), and the wireless transmission module (10104) are sequentially connected for data transmission.

7. The wireless monitoring device for structural health monitoring of a fan blade according to claim 6, characterized in that, Between the induction receiving module (10101) and the wireless transmission module (10104), a signal transceiver is formed. Between the data collection module (10102) and the data storage module (10103), a data processor is formed.

8. The wireless monitoring device for structural health monitoring of a fan blade according to claim 1, characterized in that, On both sides of the fixed seat (5001), there are bolts threadedly connected. The fixed seat (5001) is connected to the inner wall of the main shaft (200) through the bolts.

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