CN217926160U - Wind turbine generator system blade pylon headroom monitoring devices - Google Patents
Wind turbine generator system blade pylon headroom monitoring devices Download PDFInfo
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- CN217926160U CN217926160U CN202221822280.0U CN202221822280U CN217926160U CN 217926160 U CN217926160 U CN 217926160U CN 202221822280 U CN202221822280 U CN 202221822280U CN 217926160 U CN217926160 U CN 217926160U
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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 relates to a wind turbine generator blade tower clearance distance monitoring device, which belongs to the technical field of wind power monitoring equipment and comprises a data acquisition and calculation module, a power supply module and n laser ranging unit modules; n laser modules are fixed in a protective shell at intervals, the protective shell is installed at the lower end of the front part of a machine unit cabin, any one laser ranging unit module is used for measuring the distance between the cabin and the ground through a laser beam, and the distances between the n laser beams and the tower are respectively D 1 、D 2 …D n And D is 1 ＞D n (ii) a Data acquisition andthe calculation module and the power module are installed inside or at the lower end of the machine unit cabin, the data acquisition and calculation module is in signal connection with the n laser modules, and the power module is electrically connected with the data acquisition and calculation module and the n laser ranging unit modules. The utility model discloses simple structure based on pulse laser rangefinder principle, the clearance distance of monitoring blade that can be more accurate with the pylon measures accurately, and the reliability is high.
Description
Technical Field
The utility model relates to a clearance monitoring devices especially relates to a wind turbine generator system blade pylon clearance monitoring devices, and it belongs to wind power equipment state monitoring technology field.
Background
The clearance of the blade tower refers to the minimum clearance between the blade tip and the tower surface, a certain distance exists between the blade and the tower when the blade is not deformed by load in the unit design process, the blade is deformed by load in normal work, the distance between the blade and the tower is reduced, when the blade is subjected to extreme load, the interference phenomenon between the blade tip and the tower can occur, and at the moment, the blade collides with the tower to cause the blade tower-sweeping accident. With the rapid development of the wind power generation technology, the length of the blade is longer and longer, so that the deformation of the blade during operation is larger and larger, and in order to ensure the safe operation of the wind power generator, ensure the safety of a unit, prevent the blade tip of the blade from interfering with a tower in the loaded deformation process and avoid the collision accident of the blade tower, the clearance distance of the blade needs to be monitored in real time. In the prior art, blade clearance monitoring modes mainly comprise a millimeter wave radar monitoring system, an ultrasonic monitoring system, a visual monitoring system and the like, but the monitoring equipment has the disadvantages of high cost, high operation and maintenance difficulty, high environmental interference and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the device for monitoring the clearance distance of the blade tower of the wind turbine generator overcomes the defects in the prior art and is safe, reliable, accurate and simple in structure.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a device for monitoring the clearance distance of a blade tower of a wind turbine generator comprises a data acquisition and calculation module, a power supply module and n laser ranging unit modules; the n laser ranging unit modules are fixed in the protective shell at intervals, the protective shell is installed at the lower end of the front part of the machine unit cabin, any one laser ranging unit module is used for measuring the distance between the cabin and the ground through a laser beam, and the distances between the n laser beams and the tower are respectively D 1 、D 2 …D n And D is 1 ＞D n (ii) a The data acquisition and calculation module and the power supply module are arranged in the machine set cabin or at the lower end of the machine set cabin, and the data acquisition and calculation module and the n laser ranging unit modulesThe power module is electrically connected with the data acquisition and calculation module and the n laser ranging unit modules.
Furthermore, the laser range unit module adopts a pulse laser range finder, the pulse laser range finder emits laser pulses to the ground at the lower end of the cabin, and the laser is partially reflected after reaching the ground and is received by the pulse laser range finder.
Furthermore, the data acquisition and calculation module further comprises wired transmission and wireless transmission.
Further, the wired transmission is connected to the bus through a network interface.
Further, the wireless transmission supports 4G network, 5G network, WIFI or Bluetooth transmission.
Furthermore, the power module converts 220V alternating current into direct current to supply power to the laser ranging unit module and the data acquisition and calculation module.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the device adopts n laser ranging unit modules to emit n parallel laser beams, has accurate measurement and high reliability, does not influence the monitoring clearance distance of the whole equipment when the individual laser ranging unit module fails, is simple to install and maintain, and only needs to replace the failed laser ranging unit module during maintenance; 2. based on a mature pulse laser ranging principle, a large amount of data such as angles and the like do not need to be acquired, complex calculation is also not needed, and the data acquisition and processing are simple and reliable and have strong stability; 3. the clearance distance between the blade and the tower can be monitored more accurately through a plurality of beams of laser, the condition that the clearance distance between the blade tip and the tower cannot be monitored through a single beam of laser due to too large deformation of the blade is avoided, and meanwhile the problem of data misjudgment caused by floaters or severe weather is avoided; 4. the device is simple in structure, establishes communication with an existing centralized control system of a wind field through wired transmission and wireless transmission, and timely transmits monitoring information and early warning information to centralized control personnel, so that operation and maintenance personnel can be effectively reminded to change the operation state of a unit, and the occurrence of tower sweeping accidents of blades is avoided.
Drawings
Fig. 1 is a schematic view of the installation of the present invention;
FIG. 2 is a schematic view of the apparatus of the present invention;
fig. 3 is a schematic diagram illustrating the principle of measuring clearance distance according to the present invention.
In the figure, 1, a data acquisition and calculation module; 2. a power supply module; 3. a laser ranging unit module; 4. a nacelle; 5. a blade; 6. a laser beam; 7. a network interface; 8. and protecting the shell.
Detailed Description
The principles and features of the present invention will be described with reference to the accompanying fig. 1 to 3, wherein the examples are provided only for explaining the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 2, a device for monitoring the clearance of a blade tower of a wind turbine generator system comprises a data acquisition and calculation module 1, a power module 2 and n laser ranging unit modules 3; the n laser ranging unit modules 3 are fixed in a protective shell 8 at intervals, the protective shell 8 is installed at the lower end of the front part of the cabin 4, any one of the laser ranging unit modules 3 is used for measuring the distance between the cabin 4 and the ground through a laser beam 6, and the distances between the n laser beams 6 and the tower are D respectively 1 、D 2 …D n And D is 1 ＞D n And n is a positive integer greater than 1.
The laser range unit module 3 adopts a pulse laser range finder, the pulse laser range finder emits laser to the ground at the lower end of the cabin 4, and the laser is partially reflected after reaching the ground and is received by the pulse laser range finder. The pulse laser range finder comprises a laser, a detector, a transmitting-receiving amplifying circuit and the like, wherein the laser is used for transmitting laser, measuring the distance between the laser range unit module 3 and the ground through the detector, and simultaneously transmitting the measured distance information to the data acquisition and calculation module 1; in the embodiment, the peak power of the laser is not lower than 25W, the threshold current is not more than 300mA, and the noise current of the detector is not higher than 1pA/Hz.
The data acquisition and calculation module 1 and the power module 2 are installed in the cabin 4 or at the lower end, the data acquisition and calculation module 1 is in signal connection with the n laser ranging unit modules 3, and the power module 2 is electrically connected with the data acquisition and calculation module 1 and the n laser ranging unit modules 3.
The data acquisition and calculation module 1 performs data acquisition and signal processing on the measured data to complete the works of wave recording, amplification, analog-to-digital conversion and the like on the signals; the data acquisition and calculation module 1 further comprises a wired transmission function and a wireless transmission function, has an external communication function, sends processed data outwards, establishes communication with an original centralized control system of a wind field, and timely transmits monitoring information and early warning information to the centralized control system, so that operation and maintenance personnel can be effectively reminded to change the running state of a unit, and tower sweeping accidents of the blades 5 are avoided.
The wired transmission is connected to the bus via a network interface 7.
The wireless transmission supports 4G network, 5G network, WIFI or Bluetooth transmission.
The power module 2 converts 220V alternating current into direct current to supply power for the laser ranging unit module 3 and the data acquisition and calculation module 1.
The working principle of the device is as follows:
as shown in figure 3, n laser ranging unit modules 3 are installed below the front part of a machine set cabin 4, the distance between the cabin 4 and the ground is monitored in real time by emitting laser beams 6 through a pulse laser range finder, the distances between the first laser beam 6 and the tower and the distances between the first laser beam 6 and the n laser beams and the tower are recorded during installation, and D is respectively 1 、D 2 …D n And D is 1 ＞D n When D is present n Less than the safe distance, a blade 5 tower collision accident may occur.
When the blade 5 is not deformed or deformed slightly by load, the blade 5 does not block the first laser beam 6, the n pulse laser distance meters can normally transmit and receive pulse signals, the pulse signals are unchanged, and the data acquisition and calculation module 1 detects that the data are normal.
When the blade 5 is greatly deformed under extreme load, the blade 5 can block one or more laser beams 6 close to the blade 5, the clearance of the tower of the blade 5 changes, signals returned by different pulse laser range finders change, the data acquisition and calculation module 1 detects data abnormity and the data abnormity is detectedAccording to known data D 1 、D 2 …D n And calculating the clearance distance between the towers of the blades 5, quickly making a judgment, and transmitting the monitoring information and the early warning information to a centralized control system in time.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a wind turbine generator system blade pylon headroom distance monitoring devices which characterized in that: the system comprises a data acquisition and calculation module (1), a power supply module (2) and n laser ranging unit modules (3); n laser rangefinder unit module (3) interval is fixed in protection casing (8), protection casing (8) are installed at cabin (4) front portion lower extreme, arbitrary one laser rangefinder unit module (3) are used for measuring the distance between cabin (4) and the ground through laser beam (6), and the distance of n laser beam (6) and pylon is D respectively 1 、D 2 …D n And D is 1 ＞D n (ii) a The system is characterized in that the data acquisition and calculation module (1) and the power module (2) are installed inside or at the lower end of the engine room (4), the data acquisition and calculation module (1) is in signal connection with the n laser ranging unit modules (3), and the power module (2) is electrically connected with the data acquisition and calculation module (1) and the n laser ranging unit modules (3).
2. The wind turbine blade tower clearance monitoring device of claim 1, wherein: the laser ranging unit module (3) adopts a pulse laser range finder which is arranged at the lower end of the engine room (4), and the pulse laser range finder is used for emitting laser to the ground and receiving the laser reflected back from the ground.
3. The wind turbine blade tower clearance monitoring device of claim 2, wherein: the data acquisition and calculation module (1) further comprises wired transmission and wireless transmission.
4. The wind turbine blade tower clearance monitoring device of claim 3, wherein: the wired transmission is connected with the bus through a network interface (7).
5. The wind turbine blade tower clearance monitoring device of claim 3, wherein: the wireless transmission supports 4G network, 5G network, WIFI or Bluetooth transmission.
6. The wind turbine blade tower clearance monitoring device of claim 1, wherein: the power supply module (2) converts 220V alternating current into direct current to supply power for the laser ranging unit module (3) and the data acquisition and calculation module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221822280.0U CN217926160U (en) | 2022-07-14 | 2022-07-14 | Wind turbine generator system blade pylon headroom monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221822280.0U CN217926160U (en) | 2022-07-14 | 2022-07-14 | Wind turbine generator system blade pylon headroom monitoring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217926160U true CN217926160U (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221822280.0U Active CN217926160U (en) | 2022-07-14 | 2022-07-14 | Wind turbine generator system blade pylon headroom monitoring devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217926160U (en) |
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2022
- 2022-07-14 CN CN202221822280.0U patent/CN217926160U/en active Active
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