Monitoring device for structural deformation of tower drum of wind turbine generator

Abstract

The utility model discloses a wind turbine generator tower structure deformation monitoring device in the technical field of wind power generation, which comprises a fan tower, a laser monitoring system is arranged in the fan tower, and the laser monitoring system comprises a laser transmitter, a reflector and a laser receiver. The laser transmitter, the reflecting mirror and the laser receiver are sequentially installed on the inner wall of the fan tower from bottom to top, a comprehensive sensor system is arranged on the side, close to the laser receiver, of the inner wall of the fan tower, and the comprehensive sensor system is located above the reflecting mirror. According to the utility model, a laser signal is transmitted to the reflecting mirror through the laser transmitter and is reflected to the laser receiver through the reflecting mirror, and the bending condition of the fan tower can be judged by judging the displacement condition of the laser signal through the matching arrangement of the comprehensive sensor system, so that the real-time monitoring on the structural deformation of the fan tower is realized; therefore, smooth operation of the wind turbine generator is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind power generation, especially to a kind of monitoring device of wind turbine tower structure deformation. BACKGROUND

[0002] In recent years, the wind power industry develops rapidly, and wind turbine is becoming larger and larger, and the diameter of wind turbine tower is increasing. During the operation of the wind turbine, the tower not only bears the gravity load of the wind turbine main engine and the impeller, but also bears the lateral thrust load of the impeller and the main engine. At the same time, the wind turbine is a rotating machine, and it is affected by the alternating wind speed and turbulence of the incoming flow, so that the tower bears complex and variable loads such as gravity, lateral thrust, torsion and bending moment. The tower structure will deform and vibrate to a certain extent under the complex and variable loads. Under alternating load, the amplitude and frequency of deformation not only affect the power generation efficiency of the wind turbine, but also cause local permanent damage at some point or points under cyclic loading, and form cracks or further expand the cracks until complete rupture after a certain number of cycles, causing serious collapse accidents.

[0003] At present, sensors are usually used for monitoring, but sensors may be corroded and worn out, long-term monitoring is unreliable, and the monitoring data and points of sensors are relatively single, which cannot comprehensively reflect the tower condition. Therefore, we propose a kind of monitoring device of wind turbine tower structure deformation. UTILITY MODEL CONTENT

[0004] In order to improve the above-mentioned problems that the existing sensors are corroded and worn out, long-term monitoring is unreliable, and the monitoring data and points of sensors are relatively single, which cannot comprehensively reflect the tower condition, the utility model provides a kind of monitoring device of wind turbine tower structure deformation.

[0005] The utility model provides a kind of monitoring device of wind turbine tower structure deformation, adopts the following technical scheme:

[0006] A kind of monitoring device of wind turbine tower structure deformation, including wind turbine tower, the inside of the wind turbine tower is provided with laser monitoring system, the laser monitoring system includes laser emitter, reflector and laser receiver, the laser emitter, reflector and laser receiver are installed in the inner wall of wind turbine tower from bottom to top in turn, the side of the inner wall of wind turbine tower close to laser receiver is provided with comprehensive sensor system, and comprehensive sensor system is located above reflector.

[0007] By adopting the technical scheme, the laser signal is emitted by the laser emitter to the reflector, the laser signal is reflected by the reflector to the laser receiver, the bending condition of the fan tower can be judged by judging the displacement condition of the laser signal, meanwhile, the direction deviation condition, the vibration condition, the inclination condition and the acceleration condition of the fan tower can be monitored by the comprehensive sensor system, the deformation condition of the fan tower is comprehensively reflected and transmitted to the terminal, the real-time monitoring of the structural deformation of the fan tower is realized, and the smooth operation of the wind turbine generator system is ensured.

[0008] Optionally, the comprehensive sensor system comprises a direction sensor, a vibration sensor, an inclination sensor and an acceleration sensor.

[0009] By adopting the technical scheme, the direction deviation condition, the vibration condition, the inclination condition and the acceleration condition of the fan tower can be monitored simultaneously.

[0010] Optionally, the laser monitoring system is automatic induction observation.

[0011] By adopting the technical scheme, manual reading of data by personnel is not needed.

[0012] Optionally, the reflector is perpendicular to the horizontal plane.

[0013] By adopting the technical scheme, the reflection angle of the laser light of the laser emitter is equal to the incidence angle, a clear reflection image is generated, and the accuracy of the monitoring result is improved.

[0014] Optionally, the reflector adopts a circular structure.

[0015] By adopting the technical scheme, better light reflection effect is achieved, and the reliability of the monitoring result is improved.

[0016] Optionally, the reflector is installed on the side wall of the fan tower opposite to the laser emitter and the laser receiver.

[0017] By adopting the technical scheme, the laser signal emitted by the laser emitter is reflected to the laser receiver by the reflector, and the bending condition of the fan tower can be judged by judging the displacement condition of the laser signal.

[0018] In summary, the utility model has at least one of the following beneficial effects:

[0019] The laser signal is emitted by the laser emitter to the reflector, and is reflected to the laser receiver by the reflector, meanwhile, the bending condition of the fan tower can be judged by judging the displacement condition of the laser signal by the cooperation of the comprehensive sensor system, the real-time monitoring of the structural deformation of the fan tower is realized, and the smooth operation of the wind turbine generator system is ensured.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a structural schematic diagram of the present application;

[0022] Figure 2 It is a structural schematic diagram of the laser monitoring system of the present application.

[0023] In the figure: 1, fan tower drum; 2, laser monitoring system; 21, laser emitter; 22, reflector; 23, laser receiver; 3, comprehensive sensor system. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings Figures 1-2 The present application will be further described in detail.

[0025] Please refer to the drawings in the specification Figure 1 And Figure 2 The present application provides an embodiment: a monitoring device for deformation of a wind turbine tower drum structure, comprising a fan tower drum 1, a laser monitoring system 2 arranged inside the fan tower drum 1, the laser monitoring system 2 comprising a laser emitter 21, a reflector 22 and a laser receiver 23, the laser monitoring system 2 being automatic induction observation. No manual reading of data is required.

[0026] Please refer to the drawings in the specification Figure 1 And Figure 2 The laser emitter 21, the reflector 22 and the laser receiver 23 are fixed and installed on the inner wall of the fan tower drum 1 from bottom to top, and the reflector 22 is perpendicular to the horizontal plane. Thus, the reflection angle of the laser light of the laser emitter 21 is equal to the incident angle, thereby generating a clear reflection image, and further improving the accuracy of the monitoring result.

[0027] Please refer to the drawings in the specification Figure 1 And Figure 2 The reflector 22 adopts a circular structure. Thus, a better light reflection effect can be achieved, and further the reliability of the monitoring result is improved. The reflector 22 is installed on the side wall opposite to the laser emitter 21 and the laser receiver 23 inside the fan tower drum 1. The laser signal emitted by the laser emitter 21 is reflected to the laser receiver 23 through the reflector 22, and the bending condition of the fan tower drum 1 can be judged by judging the displacement condition of the laser signal.

[0028] Please refer to the drawings in the specification Figure 1 and Figure 2 The inner wall of the fan tower 1 is provided with a comprehensive sensor system 3 near the side of the laser receiver 23, and the comprehensive sensor system 3 is located above the mirror 22, and the comprehensive sensor system 3 includes a direction sensor, a vibration sensor, a tilt sensor and an acceleration sensor. Thus, the direction deviation, vibration, tilt and acceleration of the fan tower 1 can be monitored simultaneously.

[0029] Working principle: in use, the laser emitter 21, the mirror 22 and the laser receiver 23 are fixedly installed on the inner wall of the fan tower 1, and the environment in the fan tower 1 prevents the laser emitter 21, the mirror 22 and the laser receiver 23 from being affected by wind and sun, thereby improving the accuracy of monitoring. In the monitoring process, the laser emitter 21 emits a laser signal to the mirror 22, the mirror 22 reflects the laser signal to the laser receiver 23, and the bending of the fan tower 1 can be judged by judging the displacement of the laser signal. At the same time, the direction sensor, the vibration sensor, the tilt sensor and the acceleration sensor on the comprehensive sensor system 3 can monitor the direction deviation, vibration, tilt and acceleration of the fan tower 1, comprehensively reflect the deformation of the fan tower 1 and transmit to the terminal, thereby realizing real-time monitoring of the structural deformation of the fan tower 1, and ensuring the smooth operation of the wind turbine.

[0030] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made in accordance with the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A monitoring device for deformation of wind turbine tower structure, comprising wind turbine tower (1), characterized in that: The wind turbine tower (1) is equipped with a laser monitoring system (2). The laser monitoring system (2) includes a laser emitter (21), a reflector (22) and a laser receiver (23). The laser emitter (21), the reflector (22) and the laser receiver (23) are installed on the inner wall of the wind turbine tower (1) from bottom to top. A comprehensive sensor system (3) is provided on the side of the inner wall of the wind turbine tower (1) close to the laser receiver (23), and the comprehensive sensor system (3) is located above the reflector (22).

2. The monitoring device for deformation of wind turbine tower structure according to claim 1, characterized in that: The integrated sensor system (3) includes an orientation sensor, a vibration sensor, a tilt sensor, and an acceleration sensor.

3. The monitoring device for deformation of wind turbine tower structure according to claim 1, characterized in that: The laser monitoring system (2) is an automatic sensing and observation system.

4. The monitoring device for deformation of wind turbine tower structure according to claim 1, characterized in that: The reflector (22) is perpendicular to the horizontal plane.

5. The monitoring device for deformation of wind turbine tower structure according to claim 1, characterized in that: The reflector (22) has a circular structure.

6. The monitoring device for deformation of wind turbine tower structure according to claim 1, characterized in that: The reflector (22) is installed inside the wind turbine tower (1) on the side wall opposite to the laser emitter (21) and the laser receiver (23).

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