Inclination monitoring device for fan tower drum

Abstract

The utility model relates to the technical field of inclination monitoring, in particular to a fan tower inclination monitoring device. Comprising a gap sensor which is arranged at the joint surface of an upper flange and a lower flange and is suitable for obtaining a monitoring gap between the upper flange and the lower flange in real time; the processor is in communication connection with the gap sensor; the alarm is in communication connection with the processor; a gap alarm area is arranged in the processor, and when the monitoring gap of the gap sensor is located in the gap alarm area, the processor controls the alarm to give an alarm. The gap between the upper flange and the lower flange can be monitored in real time through the gap sensor, and the real-time monitoring gap is obtained. When the monitoring gap of the gap sensor is located in the gap alarm area, it shows that the overall inclination amount of the fan tower is too large, and the alarm gives an alarm.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of inclination monitoring, and specifically relates to a fan tower cylinder inclination monitoring device. BACKGROUND

[0002] The wind turbine generator set can convert wind energy into electric energy, the fan tower cylinder of the wind turbine generator set can support the fan cabin and the impeller, and is an important component of the wind turbine generator set, and the safety and stability thereof directly affect the operation of the wind turbine generator set. In the operation process of the wind turbine generator set, the loosening and fracture of the tower cylinder bolt may be caused by the changes of wind direction, wind speed and other natural conditions and the operating load of the unit, thereby causing the inclination and collapse of the tower cylinder of the wind turbine generator set. Therefore, real-time monitoring of the inclination of the flange of the tower cylinder of the wind turbine generator set, early warning of possible inclination and collapse accidents, and the safety operation of the wind turbine generator set are of great significance.

[0003] The conventional flange gap monitoring method is that the staff measures the gap between the upper flange and the lower flange on the fan tower cylinder by using a length measuring tool such as a ruler and a tape measure. However, in this way, the gap between the upper flange and the lower flange cannot be monitored in real time. SUMMARY

[0004] Therefore, the utility model provides a fan tower cylinder inclination monitoring device to solve the problem that the gap between the upper flange and the lower flange cannot be monitored in real time.

[0005] The utility model provides a fan tower cylinder inclination monitoring device, which is suitable for monitoring the gap between the upper flange and the lower flange of the fan tower cylinder, and comprises:

[0006] A gap sensor is arranged at the joint surface of the upper flange and the lower flange and is suitable for obtaining the monitoring gap between the upper flange and the lower flange in real time.

[0007] A processor is in communication connection with the gap sensor.

[0008] An alarm is in communication connection with the processor.

[0009] The processor is provided with a gap alarm area, and when the monitoring gap of the gap sensor is located in the gap alarm area, the processor controls the alarm to issue an alarm.

[0010] The application can monitor the gap between the upper flange and the lower flange in real time through the gap sensor, and obtain the real-time monitoring gap. When the monitoring gap of the gap sensor is located in the gap alarm area, it indicates that the overall inclination of the fan tower cylinder is too large, and the alarm issues an alarm.

[0011] In an alternative embodiment, the device further comprises:

[0012] an early warning device in communication with the processor;

[0013] The processor is provided with a gap early warning area, when the monitoring gap of the gap sensor is located in the gap early warning area, the processor controls the early warning device to issue an early warning.

[0014] If the overall wind turbine tower is tilted but not excessively, the early warning device can issue an early warning.

[0015] In an alternative embodiment, the gap sensors are multiple, and when the monitoring gap of at least one gap sensor is located in the gap early warning area, the processor controls the early warning device to issue an early warning.

[0016] When the monitoring gap of at least one gap sensor is located in the gap early warning area, the processor controls the early warning device to issue an early warning.

[0017] The application can accurately measure the gap between the upper flange and the lower flange, and accurately issue an early warning or an alarm according to the gap between the upper flange and the lower flange.

[0018] In an alternative embodiment, the gap sensors are circumferentially arranged at the joint surface of the upper flange and the lower flange. Arranging the gap sensors circumferentially at the joint surface can detect gap abnormalities in any direction within a 360-degree range of the joint surface, especially suitable for asymmetric tilting scenarios caused by complex wind directions, eliminating monitoring blind spots and ensuring full coverage.

[0019] In an alternative embodiment, the gap sensors are uniformly arranged at the joint surface of the upper flange and the lower flange. The gap sensors are uniformly distributed at equal angles, which can quantify the differences in gap changes in different directions, and combined with multi-sensor data comparison and analysis, it can not only judge the overall tilting trend, but also locate the local bolt loosening position, providing spatial information support for precise maintenance.

[0020] In an alternative embodiment, it further comprises:

[0021] A vibration sensor is arranged at the joint surface of the upper flange and the lower flange, and is adapted to obtain the monitoring amplitude of the wind turbine tower in real time.

[0022] The vibration sensor is in communication with the processor, and the processor is provided with a vibration threshold value.

[0023] When the monitoring amplitude of the vibration sensor is greater than the vibration threshold value, the processor controls the alarm device to issue an alarm.

[0024] After superimposing the monitoring function of the vibration sensor, the mechanical vibration characteristics caused by bolt loosening / breaking can be detected synchronously, forming a double verification mechanism with the gap change, reducing the false alarm rate, and discovering hidden damage in advance.

[0025] In an alternative embodiment, the vibration sensors are multiple, and the processor controls the alarm to issue an alarm when the monitoring amplitude of at least one vibration sensor is greater than the vibration threshold. The multiple vibration sensors can constitute a distributed vibration monitoring network, and the vibration propagation direction and intensity distribution can be identified through multi-point data fusion, the environmental vibration and the structural damage vibration can be distinguished, and the accuracy of the vibration alarm can be improved.

[0026] In an alternative embodiment, the vibration sensors are circumferentially arranged at the joint surface of the upper flange and the lower flange. The circumferential arrangement of the vibration sensors at the joint surface can capture the vibration characteristic differences of the bolt groups in different directions, and the tilt cause can be traced by combining the gap sensor data, thereby guiding targeted maintenance.

[0027] In an alternative embodiment, the vibration sensors are uniformly arranged at the joint surface of the upper flange and the lower flange. The uniformly distributed vibration sensors can form a standardized monitoring grid, and the vibration baseline database of each point can be established to quantitatively evaluate the evolution trend of the tower structure health state, thereby providing data support for predictive maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The structure schematic view of the embodiment of the present application;

[0030] Figure 2 The gap sensor position schematic view of the embodiment of the present application;

[0031] Figure 3 The vibration sensor position schematic view of the embodiment of the present application;

[0032] Figure 4 The fan tower cylinder tilt schematic view of the embodiment of the present application.

[0033] MARKED DESCRIPTION:

[0034] 1, gap sensor; 2, upper flange; 3, lower flange; 4, vibration sensor; 5, switch; 6, industrial computer; 7, fan tower cylinder. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0036] The embodiments of the utility model will be described below with reference to the drawings. Figures 1 to 4

[0037] According to the embodiments of the utility model, as shown in Figure 1 , a fan tower drum 7 inclination monitoring device is provided, which is suitable for monitoring the gap between the upper flange 2 and the lower flange 3 of the fan tower drum 7, comprising:

[0038] The gap sensor 1 is arranged at the joint surface of the upper flange 2 and the lower flange 3, and is suitable for obtaining the monitoring gap between the upper flange 2 and the lower flange 3 in real time. The gap sensor 1 can be located at the outer side of the fan tower drum 7, and is arranged in pairs to monitor the distance between the two gap sensors 1 in real time, as shown in Figure 1 . It can also be arranged at the inner side of the fan tower drum 7, and can realize non-contact distance measurement based on electromagnetic induction, capacitance change or optical distance measurement. Taking the electromagnetic induction type as an example: the internal coil of the sensor generates an alternating magnetic field, and when the metal target (such as the surface of the flange) approaches, the change of the magnetic field causes the change of the inductance of the coil, which is converted into a voltage signal through the circuit, as shown in Figure 2 .

[0039] The processor is in communication connection with the gap sensor 1; the processor can include a switch 5 and an industrial computer 6 connected with the switch 5, and the gap sensor 1 can be connected with the switch 5.

[0040] The alarm is in communication connection with the processor;

[0041] The processor is provided with a gap alarm area, and when the monitoring gap of the gap sensor 1 is located in the gap alarm area, the processor controls the alarm to issue an alarm.

[0042] The application can monitor the gap between the upper flange 2 and the lower flange 3 in real time through the gap sensor 1, and obtain the real-time monitoring gap. When the monitoring gap of the gap sensor 1 is located in the gap alarm area, it indicates that the overall inclination of the fan tower drum 7 is too large, and the alarm issues an alarm. By monitoring the gap of the flange joint surface in real time and setting the alarm area, the inclination of the fan tower drum 7 can be captured in time, the alarm can be triggered in the first time, and the collapse of the tower drum caused by the continuous expansion of the inclination can be avoided, thereby providing an emergency disposal window for the operation and maintenance personnel. ​

[0043] In an alternative embodiment, further comprising:

[0044] An early warning device is connected in communication with the processor;

[0045] The processor is provided with a gap early warning zone, when the monitoring gap of the gap sensor 1 is located in the gap early warning zone, the processor controls the early warning device to issue an early warning.

[0046] If the overall wind turbine tower 7 is tilted but not excessively, the early warning device can issue a warning. The early warning zone and the alarm zone are set to have two threshold values, when the gap value enters the early warning zone, a non-emergency prompt is issued in advance, so that the operation and maintenance personnel can intervene in the early stage of tilting to reduce the risk of equipment damage; the alarm zone is used for extreme cases to realize risk grading response and improve operation and maintenance decision efficiency.

[0047] Alternatively, the gap early warning zone can be further divided into a first early warning zone and a second early warning zone; the early warning device includes an audible and visual early warning device and a remote early warning terminal; when the monitoring gap is located in the first early warning zone, the processor triggers the audible and visual early warning device to issue a local warning; when the monitoring gap enters the second early warning zone, the remote early warning terminal is triggered to send a notification to the operation and maintenance platform. By subdividing the early warning level and matching different response modes, the first early warning only needs to be confirmed by the on-site personnel, and the second early warning starts remote collaborative disposal to avoid response delay or resource waste caused by a single early warning mode, which is suitable for multi-scenario operation and maintenance needs.

[0048] In an alternative embodiment, as shown in Figure 2 The gap sensor 1 is multiple, and when the monitoring gap of at least one gap sensor 1 is located in the gap alarm zone, the processor controls the alarm device to issue an alarm;

[0049] When the monitoring gap of at least one gap sensor 1 is located in the gap early warning zone, the processor controls the early warning device to issue an early warning.

[0050] The present application can accurately measure the gap between the upper flange 2 and the lower flange 3, and accurately issue an early warning or an alarm according to the gap between the upper flange 2 and the lower flange 3. By redundantly arranging multiple gap sensors 1 and using "or" logic judgment (any sensor triggers an alarm), missing reports caused by a single gap sensor 1 failure can be avoided, and tilting abnormalities at different positions of the flange are covered, thereby improving the fault tolerance and reliability of the monitoring system.

[0051] In an alternative embodiment, the gap sensor 1 is arranged at the joint surface of the upper flange 2 and the lower flange 3. Arranging the gap sensor 1 circumferentially at the joint surface can detect gap abnormalities in any direction within a 360-degree range of the joint surface, which is especially suitable for asymmetric tilting scenarios caused by complex wind directions, eliminates monitoring blind spots, and ensures full coverage.

[0052] In an optional embodiment, the gap sensors 1 are uniformly arranged at the joint surface of the upper flange 2 and the lower flange 3. The gap sensors 1 are uniformly distributed at equal angles, which can quantify the difference in gap changes in different directions, and through comparison and analysis of the data of multiple sensors, the overall tilting trend can be judged, and the local bolt loosening position can be located, thereby providing spatial information support for accurate maintenance.

[0053] A calibration sensor group can also be included, which is arranged adjacent to the gap sensors 1 and has the same initial calibration value; the processor compares the monitoring data of the gap sensors 1 and the calibration sensor group in real time, and if the difference exceeds the tolerance range, the faulty sensor is marked and switched to the backup calibration group. The reliability of the data can be verified through cross-validation of the redundant sensor group, and sensor abnormalities (such as drift or damage) can be automatically identified, ensuring monitoring continuity and avoiding misjudgment due to single-point failure, thereby improving the fault tolerance of the system.

[0054] The processor can have an orientation correlation database built-in, which stores the installation position coordinates of each gap sensor 1; when at least two gap sensors 1 trigger a warning or an alarm, the processor calculates the tilting direction angle of the tower drum according to the position difference of the sensors and superimposes it in the alarm information. The spatial distribution characteristics of multiple sensors can be used to convert the gap change to tilting direction data, helping maintenance personnel quickly locate the circumferential position of the bolt loosening / breaking, reducing on-site troubleshooting time, and improving maintenance efficiency.

[0055] In an optional embodiment, as shown in Figure 3 Further comprising:

[0056] A vibration sensor 4 is arranged at the joint surface of the upper flange 2 and the lower flange 3, and is adapted to obtain the monitoring amplitude of the fan tower drum 7 in real time;

[0057] The vibration sensor 4 is in communication connection with the processor, and the processor is provided with a vibration threshold value;

[0058] When the monitoring amplitude of the vibration sensor 4 is greater than the vibration threshold value, the processor controls the alarm to issue an alarm.

[0059] After superimposing the monitoring function of the vibration sensor 4, the mechanical vibration characteristics caused by bolt loosening / breaking can be detected synchronously, forming a double verification mechanism with the gap change, reducing the false alarm rate, and discovering hidden damage in advance.

[0060] In an optional embodiment, there are multiple vibration sensors 4, and when the monitoring amplitude of at least one vibration sensor 4 is greater than the vibration threshold value, the processor controls the alarm to issue an alarm. The multiple vibration sensors 4 can form a distributed vibration monitoring network, and through multi-point data fusion, the vibration propagation direction and intensity distribution can be identified, the environmental vibration and structural damage vibration can be distinguished, and the accuracy of the vibration alarm can be improved.

[0061] In an alternative embodiment, the vibration sensors 4 are circumferentially arranged at the joint surface of the upper flange 2 and the lower flange 3. The circumferential arrangement of the vibration monitoring at the joint surface can capture the vibration characteristic differences of different groups of bolts in different directions, in combination with the data of the joint gap sensor 1, to trace the cause of the tilt and guide targeted maintenance.

[0062] In an alternative embodiment, the vibration sensors 4 are uniformly arranged at the joint surface of the upper flange 2 and the lower flange 3. The uniformly distributed vibration sensors 4 can form a standardized monitoring grid, and by establishing a vibration baseline database of each point, the evolution trend of the tower structure health state can be quantitatively evaluated to provide data support for predictive maintenance.

[0063] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes are all within the scope defined by the appended claims.

Claims

1. A wind turbine tower inclination monitoring device adapted to monitor the gap between an upper flange (2) and a lower flange (3) of a wind turbine tower (7), characterized in that, The utility model relates to a wind turbine tower gap monitoring system, comprising: a gap sensor (1) arranged at the joint surface of the upper flange (2) and the lower flange (3) and adapted to obtain the monitoring gap between the upper flange (2) and the lower flange (3) in real time; a processor in communication with the gap sensor (1); an alarm in communication with the processor; a gap alarm area is arranged in the processor, and when the monitoring gap of the gap sensor (1) is located in the gap alarm area, the processor controls the alarm to issue an alarm.

2. The fan tower tilt monitoring apparatus of claim 1, wherein, Further comprising: a warning device in communication with the processor; a gap warning area is arranged in the processor, and when the monitoring gap of the gap sensor (1) is located in the gap warning area, the processor controls the warning device to issue a warning.

3. The fan tower tilt monitoring apparatus of claim 2, wherein, The gap sensor (1) is multiple, and when the monitoring gap of at least one gap sensor (1) is located in the gap alarm area, the processor controls the alarm to issue an alarm; when the monitoring gap of at least one gap sensor (1) is located in the gap warning area, the processor controls the warning device to issue a warning.

4. The fan tower tilt monitoring apparatus of claim 1, wherein, The gap sensor (1) is arranged around the joint surface of the upper flange (2) and the lower flange (3).

5. The fan tower tilt monitoring apparatus of claim 1, wherein, The gap sensor (1) is uniformly arranged at the joint surface of the upper flange (2) and the lower flange (3).

6. The fan tower tilt monitoring apparatus of claim 1, wherein, Further comprising: a vibration sensor (4) arranged at the joint surface of the upper flange (2) and the lower flange (3) and adapted to obtain the monitoring amplitude of the fan tower (7) in real time; the vibration sensor (4) is in communication with the processor, and a vibration threshold is arranged in the processor; when the monitoring amplitude of the vibration sensor (4) is greater than the vibration threshold, the processor controls the alarm to issue an alarm.

7. The fan tower tilt monitoring apparatus of claim 6, wherein, The vibration sensor (4) is multiple, and when the monitoring amplitude of at least one vibration sensor (4) is greater than the vibration threshold, the processor controls the alarm to issue an alarm.

8. The fan tower tilt monitoring apparatus of claim 6, wherein, The vibration sensor (4) is arranged around the joint surface of the upper flange (2) and the lower flange (3).

9. The fan tower tilt monitoring apparatus of claim 6, wherein, The vibration sensor (4) is uniformly arranged at the joint surface of the upper flange (2) and the lower flange (3).

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