CN211819806U - Health state monitoring device for blades of wind turbine - Google Patents
Health state monitoring device for blades of wind turbine Download PDFInfo
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- CN211819806U CN211819806U CN202020152516.9U CN202020152516U CN211819806U CN 211819806 U CN211819806 U CN 211819806U CN 202020152516 U CN202020152516 U CN 202020152516U CN 211819806 U CN211819806 U CN 211819806U
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Abstract
The utility model discloses a wind motor blade health status monitoring devices, this monitoring devices installs the position relative with the wind motor blade on the wind motor tower section of thick bamboo, which comprises an outer shell, install image acquisition device and sound acquisition device towards the position of blade on the shell, install central processing unit in the shell, a memory, communication unit, GPS and power, wherein central processing unit is connected and controls its work with foretell image acquisition device and sound acquisition device electricity respectively, be connected and carry out data reading and writing with the memory electricity, be connected so that with external communication with the communication unit electricity, be connected in order to acquire the position with the GPS electricity, the power is the detection device power supply. The utility model discloses a wind motor blade health state monitoring device, which can be easily realized based on the existing operation platforms such as smart phones; the magnetic ring is arranged on the tower drum of the wind driven generator, so that the installation and the movement are easy; the camera and the microphone can be used for easily acquiring images and sound signals.
Description
Technical Field
The utility model belongs to the aerogenerator field, in particular to wind-powered electricity generation machine blade health status monitoring devices in this field.
Background
Wind power, a clean renewable energy source, has been rapidly developed in the past decade due to energy, environmental, and climate issues. Obviously, the cleanliness and reproducibility of wind energy and the increasing maturity of large-scale application technologies thereof make wind power generation increasingly become the most mature technology, the most developed condition and the most promising power generation mode besides nuclear energy in the field of new energy. A typical wind turbine consists of a rotor, hub, blades, gearbox and drive train, generator, power conditioning, software control and monitoring devices. Although the maximum efficiency of a wind turbine is 59% in theory, the performance of a wind turbine is steadily improved because modern large wind turbines adopt more advanced blades according with the aerodynamic principle, are based on the modern control theory and use more powerful power system components.
The large-scale wind turbine is a necessary trend in the development of wind turbines, for example, a 5-megawatt horizontal shaft three-blade wind turbine has a single blade chord length of an impeller which can reach 70 meters, and the blade is very harsh in working environment and is easily physically damaged by ice hanging and lightning stroke, and if small damage and cracks cannot be found and repaired in time, the blade can be rapidly developed to be broken and scrapped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wind-powered electricity generation machine blade health status monitoring devices is provided exactly.
The utility model adopts the following technical scheme:
the utility model provides a wind turbine blade health status monitoring devices which the improvement lies in: the monitoring device is arranged at a position, opposite to a wind motor blade, on a wind motor tower cylinder and comprises a shell, an image acquisition device and a sound acquisition device are arranged on the shell facing the position of the blade, a central processing unit, a storage, a communication unit, a GPS and a power supply are arranged in the shell, wherein the central processing unit is electrically connected with the image acquisition device and the sound acquisition device respectively and controls the work of the image acquisition device and the sound acquisition device, is electrically connected with the storage and performs data reading and writing, is electrically connected with the communication unit so as to communicate with the outside, is electrically connected with the GPS so as to acquire the position, and supplies power.
Furthermore, the shell of the monitoring device is installed on the tower of the wind driven generator through a magnetic ring.
Further, the image acquisition device includes, but is not limited to, a camera; the sound acquiring device includes, but is not limited to, a microphone.
Further, a data interface electrically connected with the memory is arranged on the shell.
Further, the communication unit can communicate with a terminal in a wind field in a wireless communication mode such as WiFi, can communicate with a remote terminal in a mobile communication mode, and can also connect cloud storage, and the mobile communication mode includes but is not limited to 4G, 5G and lte.
Further, the power supply is a rechargeable battery.
Furthermore, a solar cell panel is arranged on the shell at a position which does not shield the image acquisition device and the sound acquisition device, the solar cell panel is electrically connected with a charging unit in the shell, and the charging unit is electrically connected with a rechargeable battery; in addition, a charging interface is arranged on the shell, the charging interface is electrically connected with a charging unit in the shell, and the charging unit is electrically connected with a rechargeable battery.
Furthermore, the shell is an IP 45-grade waterproof and dustproof shell.
Further, the implementation architecture of the monitoring device includes, but is not limited to, a smart phone, a tablet computer, or a smart sensor with an ARM chip and a solar cell, and the smart sensor is compliant with the IEEE 1451x interface standard series.
The improved health state monitoring method for the blades of the wind turbine by using the device is characterized by comprising the following steps of:
(1) the sound acquisition device detects a sound signal emitted when the wind motor blade rotates and sends the sound signal to the central processing unit;
(2) the central processing unit extracts a characteristic signal capable of reflecting the health state of the blade based on the sound signal, and compares the numerical value of the characteristic signal with a characteristic signal threshold value preset in a memory;
(3) if the numerical value of the characteristic signal exceeds the threshold value, the central processing unit diagnoses and analyzes whether the wind motor blade is damaged or the distance between the blade tip of the wind motor blade and the tower drum is shorter than a set value according to the characteristic signal, and simultaneously sends an alarm signal and a blade image signal acquired by the image acquisition device to the outside through the communication unit, and if the distance between the blade tip of the wind motor blade and the tower drum is shorter than the set value, the wind motor blade is immediately stopped, photographed and stored; if the value of the characteristic signal does not exceed the threshold value, the wind turbine blade is normal, and the step (1) is carried out to continue monitoring.
The utility model has the advantages that:
the utility model discloses a wind motor blade health state monitoring device, which can be easily realized based on the existing operation platforms such as smart phones; the magnetic ring is arranged on the tower drum of the wind driven generator, so that the installation and the movement are easy; the used camera and the microphone can easily finish the collection of images and sound signals; networking based on a WiFi mode can be achieved, the upper computer in one wind farm can monitor the blade health states of all wind turbines in the whole wind farm, and the blade health states of all the wind turbines in a plurality of wind farms can be remotely monitored by one remote terminal through mobile communication modes such as 5G and 4G, and cloud storage can be achieved; the rechargeable battery is charged by the solar cell panel, so that the endurance time of the monitoring device can be obviously prolonged, the workload of wind field personnel is reduced, and wireless and passive effects are realized. The shell is an IP 45-grade waterproof and dustproof shell which is rainproof and cold-proof. The longitude, latitude and altitude of the monitoring device can be acquired by the GPS so as to locate the monitoring device. The monitoring device has the functions of monitoring, fault diagnosis and analysis and safety early warning, and can be used as an intelligent eye and an intelligent ear of a wind field.
The monitoring method disclosed by the utility model can judge whether the wind turbine blade has physical damage or not based on the sound generated when the wind turbine blade operates, and the judgment is accurate; image signals of the blades are transmitted simultaneously during alarming, so that the blade state can be conveniently and visually checked in a remote mode, and false alarming is avoided.
Drawings
Fig. 1 is a block diagram of the monitoring device disclosed in embodiment 1 of the present invention;
fig. 2 is a schematic view of the installation position of the monitoring device disclosed in embodiment 1 of the present invention on a wind turbine tower;
fig. 3 is a schematic flow chart of the monitoring method disclosed in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The blade of the wind driven generator can be damaged due to lightning strike, ice hanging and the like in the running process, and the applicant finds that the sound generated when the blade runs after being damaged is different from that generated when the blade is healthy through long-term research, so the current state of the blade is considered to be detected through sound as a medium.
The shell of the monitoring device is installed on a wind turbine tower through a magnetic ring. The image acquisition device comprises but is not limited to a camera; the sound acquiring device includes, but is not limited to, a microphone. A data interface electrically connected with the memory is arranged on the shell. The communication unit can communicate with a terminal in a wind field in a wireless communication mode such as WiFi and the like, can communicate with a remote terminal in a mobile communication mode, and can be connected with cloud storage, wherein the mobile communication mode comprises but is not limited to 4G, 5G and eLTE. The power supply is a rechargeable battery. A solar cell panel is arranged on the shell at a position which does not shield the image acquisition device and the sound acquisition device, the solar cell panel is electrically connected with a charging unit in the shell, and the charging unit is electrically connected with a rechargeable battery; in addition, a charging interface is arranged on the shell, the charging interface is electrically connected with a charging unit in the shell, and the charging unit is electrically connected with a rechargeable battery. The shell is an IP 45-grade waterproof and dustproof shell. The implementation architecture of the monitoring device includes, but is not limited to, a smart phone, a tablet computer or a smart sensor with an ARM chip, and a solar cell, and the smart sensor is to conform to the IEEE 1451x interface standard series.
As shown in fig. 3, the embodiment further discloses a wind turbine blade health status monitoring method, and the method using the above device includes the following steps:
(1) the sound acquisition device detects a sound signal emitted when the wind motor blade rotates and sends the sound signal to the central processing unit;
(2) the central processing unit extracts a characteristic signal capable of reflecting the health state of the blade based on the sound signal, and compares the numerical value of the characteristic signal with a characteristic signal threshold value preset in a memory;
(3) if the numerical value of the characteristic signal exceeds the threshold value, the central processing unit diagnoses and analyzes whether the wind motor blade is damaged or the distance between the blade tip of the wind motor blade and the tower drum is shorter than a set value according to the characteristic signal, and simultaneously sends an alarm signal and a blade image signal acquired by the image acquisition device to the outside through the communication unit, and if the distance between the blade tip of the wind motor blade and the tower drum is shorter than the set value, the wind motor blade is immediately stopped, photographed and stored; if the value of the characteristic signal does not exceed the threshold value, the wind turbine blade is normal, and the step (1) is carried out to continue monitoring.
Claims (9)
1. The utility model provides a wind motor blade health monitoring devices which characterized in that: the monitoring device is arranged at a position, opposite to a wind motor blade, on a wind motor tower cylinder and comprises a shell, an image acquisition device and a sound acquisition device are arranged on the shell facing the position of the blade, a central processing unit, a storage, a communication unit, a GPS and a power supply are arranged in the shell, wherein the central processing unit is electrically connected with the image acquisition device and the sound acquisition device respectively and controls the work of the image acquisition device and the sound acquisition device, is electrically connected with the storage and performs data reading and writing, is electrically connected with the communication unit so as to communicate with the outside, is electrically connected with the GPS so as to acquire the position, and supplies power.
2. The wind turbine blade health monitoring device of claim 1, wherein: the shell of the monitoring device is installed on a wind turbine tower through a magnetic ring.
3. The wind turbine blade health monitoring device of claim 1, wherein: the image acquisition device comprises but is not limited to a camera; the sound acquiring device includes, but is not limited to, a microphone.
4. The wind turbine blade health monitoring device of claim 1, wherein: a data interface electrically connected with the memory is arranged on the shell.
5. The wind turbine blade health monitoring device of claim 1, wherein: the communication unit can communicate with a terminal in a wind field in a WiFi mode, can communicate with a remote terminal in a mobile communication mode, and can also connect cloud storage, wherein the mobile communication mode includes but is not limited to 4G, 5G and eLTE.
6. The wind turbine blade health monitoring device of claim 1, wherein: the power supply is a rechargeable battery.
7. The wind turbine blade health monitoring device of claim 6, wherein: a solar cell panel is arranged on the shell at a position which does not shield the image acquisition device and the sound acquisition device, the solar cell panel is electrically connected with a charging unit in the shell, and the charging unit is electrically connected with a rechargeable battery; in addition, a charging interface is arranged on the shell, the charging interface is electrically connected with a charging unit in the shell, and the charging unit is electrically connected with a rechargeable battery.
8. The wind turbine blade health monitoring device of claim 1, wherein: the shell is an IP 45-grade waterproof and dustproof shell.
9. The wind turbine blade health monitoring device of claim 1, wherein: the implementation architecture of the monitoring device includes, but is not limited to, a smart phone, a tablet computer or a smart sensor with an ARM chip, and a solar cell, and the smart sensor is to conform to the IEEE 1451x interface standard series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020152516.9U CN211819806U (en) | 2020-02-05 | 2020-02-05 | Health state monitoring device for blades of wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020152516.9U CN211819806U (en) | 2020-02-05 | 2020-02-05 | Health state monitoring device for blades of wind turbine |
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| CN211819806U true CN211819806U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237135A (en) * | 2020-02-05 | 2020-06-05 | 中国海洋大学 | Health state monitoring device and method for blades of wind turbine |
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2020
- 2020-02-05 CN CN202020152516.9U patent/CN211819806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237135A (en) * | 2020-02-05 | 2020-06-05 | 中国海洋大学 | Health state monitoring device and method for blades of wind turbine |
| WO2021155741A1 (en) * | 2020-02-05 | 2021-08-12 | 中国海洋大学 | Wind generator blade state of health monitoring apparatus and monitoring method thereof |
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