CN114412724A - Laser radar ranging system for monitoring running state of wind power blade - Google Patents
Laser radar ranging system for monitoring running state of wind power blade Download PDFInfo
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- CN114412724A CN114412724A CN202111667490.7A CN202111667490A CN114412724A CN 114412724 A CN114412724 A CN 114412724A CN 202111667490 A CN202111667490 A CN 202111667490A CN 114412724 A CN114412724 A CN 114412724A
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- wind turbine
- laser radar
- monitoring
- wind
- turbine generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses a laser radar ranging system for monitoring the running state of a wind power blade, which comprises: a spindle angle sensor; the laser radar ranging device is arranged at the top of the case of the wind turbine generator; a wind speed sensor; a data acquisition instrument; the wind turbine generator system computer is arranged inside a machine box of the wind turbine generator system, the data acquisition instrument transmits acquired signals to the wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar distance measuring device to work; and a wind power plant monitoring center. The invention relates to the technical field of wind power detection, and discloses a laser radar ranging system for monitoring the running state of a wind power blade.
Description
Technical Field
The invention relates to the technical field of wind power detection, in particular to a laser radar ranging system for monitoring the running state of a wind power blade.
Background
Wind energy is a clean renewable energy source, people pay more and more attention to the development and the utilization of the wind energy, the development and the utilization of the wind energy are mainly realized through wind power generation, the wind power generation is a process of converting kinetic energy of wind into electric energy, and the basic principle is that wind power is utilized to drive blades to rotate, and a generator is driven to generate electricity through electromagnetic induction. The wind blade is an important part of a wind generating set, and in the design of the wind blade, the wind blade is generally required to meet the service life of 20 years. However, in actual field operation, the wind turbine generator is easily damaged due to the operating characteristics of the wind turbine generator under the action of unsteady loads, and the reliability and the service life of the safe operation of the wind turbine generator are seriously influenced. Once the blade is damaged locally, the damage of the whole blade can be expanded, if the blade is not processed in time, the safety of the whole unit is even affected. On the contrary, if the local part of the blade is slightly damaged, the damaged part can be found in time and processed in time, so that not only can the whole blade be prevented from being replaced, but also the loss possibly brought to the unit can be effectively avoided.
The existing wind turbine generator system blade detection technology generally adopts various sensors embedded in blades to detect, needs to modify the blades, installs the sensors on the blades, and belongs to a contact detection technology. These contact sensing techniques are extremely limited in their application due to the high speed of motion of the blade during operation.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the laser radar ranging system for monitoring the running state of the wind power blade, so that the blade is indirectly monitored without being modified and the structure of the blade is not damaged.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a lidar ranging system for monitoring wind turbine blade operating conditions, comprising:
the main shaft angle sensor is arranged on the wind power blade main shaft;
the laser radar ranging device is arranged at the top of the case of the wind turbine generator;
the wind speed sensor is arranged on one side of the case of the wind turbine generator;
the main shaft angle sensor, the laser radar distance measuring device and the wind speed sensor are connected with the data acquisition instrument;
the wind turbine generator system computer is arranged inside a machine box of the wind turbine generator system, the data acquisition instrument transmits acquired signals to the wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar distance measuring device to work;
the monitoring system comprises a wind power plant monitoring center, wherein the wind power plant monitoring center acquires a monitoring result processed in a wind turbine computer through data transmission equipment, and controls the wind turbine computer through the data transmission equipment.
Preferably, the laser radar ranging device is used for measuring the distances from the laser radar ranging probe to different positions of the blade at different angles.
Preferably, the maximum distance measured by the laser radar distance measuring device is the distance from the wind power blade to the blade tip in a vertical state of 50-120cm under the condition of no wind ring energy.
Preferably, the minimum distance measured by the laser radar ranging device is the distance from the laser radar ranging probe to the blade when the laser radar ranging probe is in the horizontal position.
Preferably, laser radar range unit includes the mount, the top both sides of mount are rotated in proper order and are connected with first axis of rotation, second axis of rotation, be fixed with laser radar range probe between first axis of rotation and the second axis of rotation, the first synchronizing wheel of one end fixedly connected with of first axis of rotation, the bottom fixedly connected with motor and the controller of mount, the output shaft fixedly connected with second synchronizing wheel of motor, the transmission is connected with the hold-in range between first synchronizing wheel and the second synchronizing wheel, the top fixedly connected with mounting bracket of mount one side, the one end fixed connection angle sensor of mounting bracket, angle sensor's sense terminal and the one end fixed connection of second axis of rotation.
Preferably, the motor is a servo motor.
Preferably, the controller is used for controlling the motor and the laser radar ranging probe, and the laser radar ranging probe and the angle sensor transmit the measurement data to the wind turbine computer through the controller.
Preferably, the transmission mode of the data transmission device includes satellite transmission, mobile network transmission, and optical fiber transmission.
Preferably, the wind turbine generator computer is internally provided with blade deformation quantities under different wind speeds, and measures the deformation quantities of the blades according to the laser radar ranging device.
(III) advantageous effects
The invention provides a laser radar ranging system for monitoring the running state of a wind power blade. The method has the following beneficial effects:
this kind of a laser radar ranging system for monitoring wind-powered electricity generation blade running state, through the laser radar range unit that sets up at wind turbine generator system's machine roof portion, can measure the distance between blade one side to the laser radar range unit, thereby can derive the swing range of blade, and through the rotation of the certain angle of laser radar range finder, can measure the swing range of each position of blade, judge again whether this range is in the normal range scope under current wind speed, finally realize the effective monitoring to the blade, the discovery problem can in time be handled.
Drawings
FIG. 1 is a diagram of a lidar ranging system of the present invention;
FIG. 2 is a front view of a lidar ranging device of the present invention;
FIG. 3 is a side view of a lidar ranging device of the present invention;
FIG. 4 is a schematic diagram of the measurement range of the lidar ranging device of the present invention.
In the figure: the device comprises a fixing frame 1, a first rotating shaft 2, a second rotating shaft 3, a laser radar ranging probe 4, a first synchronous wheel 5, a motor 6, a second synchronous wheel 7, a synchronous belt 8, a controller 9, a mounting frame 10 and an angle sensor 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a lidar ranging system for monitoring wind turbine blade operating conditions, comprising:
the main shaft angle sensor is arranged on a main shaft of the wind power blade, and the state of the blade can be known through the main shaft angle sensor, so that the distance measurement can be conveniently carried out by using a laser radar distance measuring device;
the laser radar ranging device is arranged at the top of the case of the wind turbine generator;
the wind speed sensor is arranged on one side of the case of the wind turbine generator;
the main shaft angle sensor, the laser radar distance measuring device and the wind speed sensor are connected with the data acquisition instrument;
the wind turbine generator system computer is arranged inside a machine box of the wind turbine generator system, the data acquisition instrument transmits acquired signals to the wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar distance measuring device to work;
the monitoring system comprises a wind power plant monitoring center, wherein the wind power plant monitoring center acquires a monitoring result processed in a wind turbine computer through data transmission equipment, and controls the wind turbine computer through the data transmission equipment.
The laser radar ranging device is used for measuring the distances from the laser radar ranging probe to different positions of the blade at different angles.
The transmission modes of the data transmission equipment comprise satellite transmission, mobile network transmission and optical fiber transmission.
The wind turbine generator system comprises a wind turbine generator system computer and is characterized in that deformation quantities of blades under different wind speeds are arranged in the wind turbine generator system computer, and the deformation quantities of the blades are measured by the wind turbine generator system computer according to a laser radar ranging device.
The maximum distance measured by the laser radar ranging device is that the wind power blade is located at a position which is 50-120cm away from the blade tip in a vertical state under the condition of no wind ring energy, the maximum distance is controlled through the rotating angle of the laser radar ranging probe 4, the position a in the figure 4 is the maximum position, the minimum distance measured by the laser radar ranging device is the distance from the blade when the laser radar ranging probe is located at the horizontal position, and the position f in the figure 4 is the minimum distance.
Supposing that a tiny crack occurs inside the point c in fig. 4, the swing amplitude of the point b detected by the laser radar ranging probe 4 is too large, other positions of the blade are monitored immediately, the laser radar ranging probe 4 rotates by a certain angle, the swing amplitude of the point d detected by the laser radar ranging probe is normal, the crack between the point b and the point d can be judged, the laser radar ranging probe 4 continues to rotate for measurement, the range of the crack can be further reduced, and later-stage maintenance is facilitated.
Laser radar range unit includes mount 1, the top both sides of mount 1 are rotated in proper order and are connected with first axis of rotation 2, second axis of rotation 3, be fixed with laser radar range probe 4 between first axis of rotation 2 and the second axis of rotation 3, the first synchronizing wheel 5 of the one end fixedly connected with of first axis of rotation 2, the bottom fixedly connected with motor 6 and the controller 9 of mount 1, the output shaft fixedly connected with second synchronizing wheel 7 of motor 6, the transmission is connected with hold-in range 8 between first synchronizing wheel 5 and the second synchronizing wheel 7, the top fixedly connected with mounting bracket 10 of 1 one side of mount, the one end fixed connection angle sensor 11 of mounting bracket 10, angle sensor 11's the sense terminal and the one end fixed connection of second axis of rotation 3.
The controller 9 is used for controlling the motor 6 and the laser radar ranging probe 4, and the laser radar ranging probe 4 and the angle sensor 11 transmit the measured data to the wind turbine computer through the controller 9.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a laser radar ranging system for monitoring wind-powered electricity generation blade running state which characterized in that: the method comprises the following steps:
the main shaft angle sensor is arranged on the wind power blade main shaft;
the laser radar ranging device is arranged at the top of the case of the wind turbine generator;
the wind speed sensor is arranged on one side of the case of the wind turbine generator;
the main shaft angle sensor, the laser radar distance measuring device and the wind speed sensor are connected with the data acquisition instrument;
the wind turbine generator system computer is arranged inside a machine box of the wind turbine generator system, the data acquisition instrument transmits acquired signals to the wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar distance measuring device to work;
the monitoring system comprises a wind power plant monitoring center, wherein the wind power plant monitoring center acquires a monitoring result processed in a wind turbine computer through data transmission equipment, and controls the wind turbine computer through the data transmission equipment.
2. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 1, wherein: the laser radar ranging device is used for measuring the distances from the laser radar ranging probe to different positions of the blade at different angles.
3. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 1, wherein: the maximum distance measured by the laser radar ranging device is that the wind power blade is located at a position 50-120cm away from the blade tip in a vertical state without wind ring energy.
4. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 1, wherein: the minimum distance measured by the laser radar ranging device is the distance from the laser radar ranging probe to the blade when the laser radar ranging probe is in the horizontal position.
5. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 1, wherein: the laser radar ranging device comprises a fixing frame (1), wherein a first rotating shaft (2) and a second rotating shaft (3) are sequentially and rotatably connected to two sides of the top of the fixing frame (1), a laser radar ranging probe (4) is fixedly arranged between the first rotating shaft (2) and the second rotating shaft (3), a first synchronizing wheel (5) is fixedly connected to one end of the first rotating shaft (2), a motor (6) and a controller (9) are fixedly connected to the bottom of the fixing frame (1), a second synchronizing wheel (7) is fixedly connected to an output shaft of the motor (6), a synchronizing belt (8) is in transmission connection between the first synchronizing wheel (5) and the second synchronizing wheel (7), a mounting frame (10) is fixedly connected to the top of one side of the fixing frame (1), and an angle sensor (11) is fixedly connected to one end of the mounting frame (10), and the detection end of the angle sensor (11) is fixedly connected with one end of the second rotating shaft (3).
6. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 5, wherein: the motor (6) adopts a servo motor.
7. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 5, wherein: the controller (9) is used for controlling the motor (6) and the laser radar ranging probe (4), and the laser radar ranging probe (4) and the angle sensor (11) transmit measurement data to the wind turbine computer through the controller (9).
8. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 1, wherein: the transmission modes of the data transmission equipment comprise satellite transmission, mobile network transmission and optical fiber transmission.
9. The lidar ranging system for monitoring an operating state of a wind turbine blade according to claim 1, wherein: the wind turbine generator system comprises a wind turbine generator system computer and is characterized in that deformation quantities of blades under different wind speeds are arranged in the wind turbine generator system computer, and the deformation quantities of the blades are measured by the wind turbine generator system computer according to a laser radar ranging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667490.7A CN114412724A (en) | 2021-12-31 | 2021-12-31 | Laser radar ranging system for monitoring running state of wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667490.7A CN114412724A (en) | 2021-12-31 | 2021-12-31 | Laser radar ranging system for monitoring running state of wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114412724A true CN114412724A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111667490.7A Pending CN114412724A (en) | 2021-12-31 | 2021-12-31 | Laser radar ranging system for monitoring running state of wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114412724A (en) |
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2021
- 2021-12-31 CN CN202111667490.7A patent/CN114412724A/en active Pending
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