CN220539768U - High tower tube-shape attitude monitoring system of wind turbine generator system - Google Patents
High tower tube-shape attitude monitoring system of wind turbine generator system Download PDFInfo
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- CN220539768U CN220539768U CN202321349428.8U CN202321349428U CN220539768U CN 220539768 U CN220539768 U CN 220539768U CN 202321349428 U CN202321349428 U CN 202321349428U CN 220539768 U CN220539768 U CN 220539768U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims abstract description 49
- 230000001133 acceleration Effects 0.000 claims abstract description 46
- 238000005070 sampling Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model discloses a wind turbine generator system high tower barrel-shaped state monitoring system, which comprises: the vibration acceleration sensor is arranged on the tower barrel; the tower cylinder comprises a plurality of sub tower cylinders, and two adjacent sub tower cylinders are connected through a flange plate; the flange displacement sensor is arranged at the joint of two adjacent flange plates; the data acquisition device is externally connected with a vibration acceleration sensor and a flange displacement sensor respectively; the micro processor is connected with the data acquisition device; the main control system of the unit is connected with the microprocessor. According to the utility model, the vibration acceleration sensor is arranged at different height positions of the tower, so that the three-dimensional measurement of the tower can be realized, and the accuracy is improved; meanwhile, the flange displacement sensor is arranged at the joint of the flange plates in the tower barrel to monitor the displacement information of the flange plates, so that the damage to the tower barrel caused by loosening of bolts is prevented; meanwhile, through the fusion of vibration monitoring and flange clearance monitoring, the tower cylinder state can be comprehensively and effectively monitored, and the method has great practicability.
Description
Technical Field
The utility model belongs to the technical field of wind power generation, and relates to a high tower barrel-shaped state monitoring system of a wind turbine generator.
Background
When the wind turbine runs, the wind wheel rotates to excite the tower barrel to vibrate, and the external excitation frequency should avoid the natural frequency of the tower barrel, so as to prevent the wind turbine from being damaged due to resonance. The tower barrels are connected together in a segmented mode, the two connected tower barrels are connected together through the flange plate by means of bolts, and along with the increase of the height of the tower barrels, the stress of the flange connection part is larger, and the requirement on the connection reliability of the bolts is higher.
The existing method for monitoring the state of the tower cylinder of the fan set does not consider the characteristics of the tower cylinder of the high tower, namely, the vibration amplitudes at different heights are different, the tower cylinder cannot be measured in a three-dimensional mode, and along with the wide application of the tower cylinder of the high tower, the vibration state at one height cannot be used for representing the movement state of the tower cylinder under different modes, so that the state of the tower cylinder cannot be judged effectively. In addition, only the amplitude of the tower can be monitored, the flange connection part can not be monitored, the tower can not be monitored in a comprehensive state, and the monitoring accuracy is greatly reduced.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, three-dimensional measurement cannot be carried out on a tower barrel, meanwhile, the flange connection part cannot be monitored, and comprehensive state monitoring cannot be formed on the tower barrel, and provides a high tower barrel state monitoring system of a wind turbine generator.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
a wind turbine generator system high tower barrel state monitoring system includes: the system comprises a tower, a vibration acceleration sensor, a flange displacement sensor, a data acquisition unit, a microprocessor and a unit main control system;
the vibration acceleration sensor is arranged on the tower barrel; the tower cylinder comprises a plurality of sub tower cylinders, and two adjacent sub tower cylinders are connected through a flange plate; the flange displacement sensor is arranged at the joint of two adjacent flange plates; the data acquisition device is externally connected with a vibration acceleration sensor and a flange displacement sensor respectively; the micro processor is connected with the data acquisition device; the main control system of the unit is connected with the microprocessor.
The utility model further improves that:
further, the vibration acceleration sensor and the flange displacement sensor are all in a plurality of groups; vibration acceleration sensors measure data of towers of different heights from different positions arranged on the towers.
Further, vibration acceleration sensors of the same height are arranged at equal intervals.
Further, the flange displacement sensors with the same height are arranged at equal intervals.
Further, the data collected by the flange displacement sensor comprises normal displacement fluctuation of the flange gap at different heights and flange gap values of the flange gap at the same height in other directions exceeding the same height.
Further, the data collected by the vibration acceleration sensor comprise the amplitude change of the frequency corresponding to the natural frequency of the tower and the deviation value of the natural frequency value of the tower.
Further, the micro processor comprises a first comparison module and a second comparison module, and the first comparison module and the second comparison module are simultaneously connected with the data acquisition device; the first comparison module is used for comparing the value of the frequency amplitude value corresponding to the natural frequency variation of the tower barrel exceeding the natural frequency amplitude value under the normal operation condition and the natural frequency value deviation value with a preset threshold value respectively, and generating an alarm instruction when at least one of the value of the frequency amplitude value corresponding to the natural frequency variation of the tower barrel exceeding the natural frequency amplitude value under the normal operation condition and the natural frequency value deviation value reaches the preset threshold value.
Further, the second comparison module is used for comparing the normal displacement fluctuation value of the flange gap at different heights and the flange gap value of the flange gap at the same height in other directions exceeding the same height with a preset threshold value respectively, and generating an alarm instruction when at least one of the normal displacement fluctuation value of the flange gap at different heights and the flange gap value of the flange gap at the same height in other directions exceeding the same height reaches the preset threshold value.
Further, the unit main control system comprises a first buzzer and a second buzzer; the first buzzer is connected with the first comparison module, and the unit main control system alarms according to the alarm instruction of the vibration acceleration sensor transmitted by the first comparison module; the second buzzer is connected with the second comparison module; and the unit main control system alarms according to the flange displacement sensor alarm instruction transmitted by the second comparison module by the second buzzer.
Further, the sampling frequency of the vibration acceleration sensor and the flange displacement sensor is 50Hz.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the vibration acceleration sensor is arranged at different height positions of the tower, so that three-dimensional measurement of the tower can be realized, and the accuracy is higher; and meanwhile, the flange displacement sensor is arranged at the joint of the flange plates inside the tower barrel to monitor the displacement information of the flange plates, so that the damage to the tower barrel caused by loosening of bolts is prevented.
Furthermore, the utility model analyzes the natural frequency amplitude and the natural frequency offset according to different fault types, and considers more comprehensively; meanwhile, through the fusion of vibration monitoring and flange clearance monitoring, the tower cylinder state can be monitored three-dimensionally, comprehensively and effectively, and the method has great practicability.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a wind turbine tower state monitoring system of the present utility model;
FIG. 2 is a schematic view of the mounting location of the vibration acceleration sensor;
FIG. 3 is a schematic view of vibration acceleration sensor mounting locations at the same elevation;
FIG. 4 is a schematic view of the flange displacement sensor mounting locations at the same elevation.
Wherein, 1-the vibration acceleration sensor; 2-a flange displacement sensor; 3-a data collector; 4-a microprocessor; 5-a unit main control system; 6-a first contrast module; 7-a second contrast module; 8-a first buzzer; 9-a second buzzer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model is described in further detail below with reference to the attached drawing figures:
referring to fig. 1, the utility model discloses a wind turbine generator system high tower barrel state monitoring system, which comprises: the device comprises a tower, a vibration acceleration sensor 1, a flange displacement sensor 2, a data acquisition unit 3, a microprocessor 4 and a unit main control system 5;
the vibration acceleration sensor 1 is arranged on the tower; the tower cylinder comprises a plurality of sub tower cylinders, and two adjacent sub tower cylinders are connected through a flange plate; the flange displacement sensor 2 is arranged at the joint of two adjacent flanges; the data acquisition device 3 is externally connected with a vibration acceleration sensor 1 and a flange displacement sensor 2 respectively; the microprocessor 4 is connected with the data collector 3; the unit master control system 5 is connected with the microprocessor 3.
The vibration acceleration sensor 1 and the flange displacement sensor 2 are respectively provided with a plurality of groups; the vibration acceleration sensor 1 measures data of towers of different heights from different positions provided on the towers.
The vibration acceleration sensors 1 of the same height are arranged at equal intervals. The flange displacement sensors 2 of the same height are arranged at equal intervals. The data collected by the flange displacement sensor 2 comprise normal displacement fluctuation of flange gaps at different heights and flange gap values of flange gaps at the same height in other directions exceeding the same height. The data collected by the vibration acceleration sensor 1 comprise the amplitude variation of the frequency corresponding to the natural frequency of the tower and the deviation value of the natural frequency value of the tower.
The microprocessor 4 comprises a first comparison module 6 and a second comparison module 7, and the first comparison module 6 and the second comparison module 7 are simultaneously connected with the data collector 3; the first comparison module 6 is configured to compare a value of a frequency amplitude value corresponding to the natural frequency of the tower barrel, which exceeds a natural frequency amplitude value under a normal operation condition, and a natural frequency value deviation value with a preset threshold value, respectively, and generate an alarm instruction when at least one of the value of the frequency amplitude value corresponding to the natural frequency of the tower barrel, which exceeds the natural frequency amplitude value under the normal operation condition, and the natural frequency value deviation value reaches the preset threshold value. The second comparison module 7 is configured to compare the normal displacement fluctuation value of the flange gap at different heights and the flange gap value of the flange gap at the same height in other directions exceeding the same height with preset thresholds, and generate an alarm command when at least one of the normal displacement fluctuation value of the flange gap at different heights and the flange gap value of the flange gap at the same height in other directions exceeding the same height reaches the preset threshold.
The unit main control system 5 comprises a first buzzer 8 and a second buzzer 9; the first buzzer 8 is connected with the first comparison module 6, and the unit main control system 5 alarms according to the alarm instruction of the vibration acceleration sensor transmitted by the first comparison module 6, and the first buzzer 8 alarms; the second buzzer 9 is connected with the second comparison module 7; the unit main control system 5 alarms according to the flange displacement sensor alarm instruction transmitted by the second comparison module 7, and the second buzzer 9 alarms. The sampling frequency of the vibration acceleration sensor 1 and the flange displacement sensor 2 is 50Hz.
Examples:
the utility model discloses a wind turbine generator high tower barrel state monitoring system, wherein a dual-shaft low-frequency vibration acceleration sensor is adopted as a vibration acceleration sensor 1, the installation height is shown in figure 2, 4 layers of vibration acceleration sensors 1 are arranged at the positions 25%, 50% and 75% of the tower barrel height and the top of the tower barrel, when the installation height of the vibration acceleration sensor 1 is close to a flange connection position between the tower barrel, the vibration acceleration sensor 1 can be installed at the flange connection position, for example, a sub-tower barrel takes 20% of the total height of the tower barrel as one section, and 4 layers of vibration acceleration sensors 1 can be arranged at the positions 20%, 60% and 80% of the tower barrel height and the top of the tower barrel, so that the vibration acceleration sensor 1 is mainly convenient to install. As shown in fig. 3, vibration acceleration sensors 1 of the same height are mounted at equal intervals of 45 ° to measure vibrations in 8 directions. The sampling frequency of the vibration acceleration sensor 1 is set to be 50Hz; the flange displacement sensors 2 are arranged at the joint of the flanges between the sub-tower barrels, the size of gaps at the joint is measured, as shown in fig. 4, the flange displacement sensors 2 with the same height are arranged at equal intervals of 45 degrees, and the sampling frequency of the flange displacement sensors 2 is set to be 50Hz; the data acquisition device 3 is used for collecting data acquired by the vibration acceleration sensor 1 and the flange displacement sensor 2; the micro processor 4 judges the data collected by the data collector 3 and sends the judging result to the unit main control system 5; the micro processor 4 judges whether the data acquired by the flange displacement sensor 2 is larger than a threshold value, and if so, the unit main control system 5 alarms; the data collected by the flange displacement sensor 2 comprise normal displacement fluctuation of flange gaps at different heights and the size of the flange gaps at the same height; and when the normal displacement fluctuation of the flange gaps at different heights exceeds 1.2FG, or when the flange gaps at the same height exceed 10% of the flange gaps at other directions at the same height, the unit main control system 5 alarms. The micro processor 4 judges whether the data acquired by the vibration acceleration sensor 1 is larger than a threshold value, and if so, the unit main control system 5 alarms; the data collected by the vibration acceleration sensor 1 comprise the frequency amplitude variation corresponding to the natural frequency of the tower and the deviation of the natural frequency value of the tower; the change of the frequency amplitude corresponding to the natural frequency of the tower is more than 30% of the natural frequency amplitude under the normal operation condition, or the deviation of the natural frequency value is more than 20%, and the unit main control system 5 alarms. The determination logic of the microprocessor 4 is set manually. The main control system 5 of the machine set receives signals of the micro processor and sends out corresponding instructions to the operation of the machine set.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a wind turbine generator system high tower tube-shape attitude monitoring system which characterized in that includes: the device comprises a tower, a vibration acceleration sensor (1), a flange displacement sensor (2), a data acquisition unit (3), a microprocessor (4) and a unit main control system (5);
the vibration acceleration sensor (1) is arranged on the tower barrel; the tower cylinder comprises a plurality of sub tower cylinders, and the two adjacent sub tower cylinders are connected through a flange plate; the flange displacement sensor (2) is arranged at the joint of two adjacent flange plates; the data acquisition device (3) is externally connected with a vibration acceleration sensor (1) and a flange displacement sensor (2) respectively; the micro processor (4) is connected with the data acquisition device (3); the unit main control system (5) is connected with the microprocessor (4).
2. The wind turbine generator system tower-like state monitoring system according to claim 1, wherein the vibration acceleration sensor (1) and the flange displacement sensor (2) are all in a plurality of groups; the vibration acceleration sensor (1) is arranged at different positions of the tower, and measures data of towers with different heights.
3. The wind turbine generator system high tower cylindrical state monitoring system according to claim 2, wherein the vibration acceleration sensors (1) with the same height are arranged at equal intervals.
4. The wind turbine generator system tower cylinder state monitoring system according to claim 3, wherein the flange displacement sensors (2) with the same height are arranged at equal intervals.
5. The wind turbine generator system tower-like state monitoring system according to claim 4, wherein the data collected by the flange displacement sensor (2) comprises normal displacement fluctuation of flange gaps at different heights and flange gap values of the flange gaps at the same height in other directions exceeding the same height.
6. The wind turbine generator system high tower state monitoring system according to claim 5, wherein the data collected by the vibration acceleration sensor (1) comprises a frequency amplitude variation value corresponding to the natural frequency of the tower and a tower natural frequency value deviation value.
7. The wind turbine generator system high tower state monitoring system according to claim 6, wherein the micro processor (4) comprises a first comparison module (6) and a second comparison module (7), and the first comparison module (6) and the second comparison module (7) are simultaneously connected with the data collector (3); the first comparison module (6) is used for comparing the value of the frequency amplitude value corresponding to the natural frequency variation of the tower barrel exceeding the natural frequency amplitude value under the normal operation condition and the natural frequency value deviation value with a preset threshold value respectively, and generating an alarm instruction when at least one of the value of the frequency amplitude value corresponding to the natural frequency variation of the tower barrel exceeding the natural frequency amplitude value under the normal operation condition and the natural frequency value deviation value reaches the preset threshold value.
8. The wind turbine generator system tower-like state monitoring system according to claim 7, wherein the second comparison module (7) is configured to compare a normal displacement fluctuation value of a flange gap at different heights and a flange gap value of a flange gap at the same height in other directions exceeding the same height with preset thresholds, respectively, and generate an alarm command when at least one of the normal displacement fluctuation value of the flange gap at different heights and the flange gap value of the flange gap at the same height in other directions exceeding the same height reaches the preset threshold.
9. The wind turbine tower state monitoring system according to claim 8, wherein the turbine main control system (5) comprises a first buzzer (8) and a second buzzer (9); the first buzzer (8) is connected with the first comparison module (6), and the unit main control system (5) alarms according to the alarm instruction of the vibration acceleration sensor transmitted by the first comparison module (6), and the first buzzer (8) is connected with the first comparison module; the second buzzer (9) is connected with the second comparison module (7); the unit main control system (5) alarms according to the flange displacement sensor alarm instruction transmitted by the second comparison module (7) and the second buzzer (9).
10. The wind turbine generator system tower-like state monitoring system according to claim 1, wherein the sampling frequency of the vibration acceleration sensor (1) and the flange displacement sensor (2) is 50Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321349428.8U CN220539768U (en) | 2023-05-30 | 2023-05-30 | High tower tube-shape attitude monitoring system of wind turbine generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321349428.8U CN220539768U (en) | 2023-05-30 | 2023-05-30 | High tower tube-shape attitude monitoring system of wind turbine generator system |
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| CN220539768U true CN220539768U (en) | 2024-02-27 |
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| CN202321349428.8U Active CN220539768U (en) | 2023-05-30 | 2023-05-30 | High tower tube-shape attitude monitoring system of wind turbine generator system |
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| CN (1) | CN220539768U (en) |
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2023
- 2023-05-30 CN CN202321349428.8U patent/CN220539768U/en active Active
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