CN112855466A

CN112855466A - Laser radar impeller monitoring device and wind power generation device

Info

Publication number: CN112855466A
Application number: CN202110165827.8A
Authority: CN
Inventors: 杨硕
Original assignee: Shenzhen Faselase Co ltd
Current assignee: Shenzhen Faselase Co ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2021-05-28

Abstract

The invention relates to a laser radar impeller monitoring device, which is used for monitoring the position form of an impeller, wherein when the impeller is acted by external force, the impeller is deformed in various positions, and the laser radar impeller monitoring device comprises: the shell and accept laser transceiver module and controller in the shell, laser transceiver module is including being connected to a plurality of laser transceivers of controller respectively, and a plurality of laser transceivers correspond many laser of transmission towards multiple form position to the deformation of monitoring impeller sends feedback signal to the controller, and the controller sends stop signal or alarm signal according to feedback signal. The laser radar impeller monitoring device and the wind power generation device correspondingly emit a plurality of lasers in different directions to detect the positions of the impellers, and the controller sends out an alarm signal or/and a stop signal according to the positions, so that the laser radar impeller monitoring device sends out an alarm or/and stops working to monitoring personnel, the failure rate is low, the use reliability is good, and the service life is long; convenient installation and use.

Description

Laser radar impeller monitoring device and wind power generation device

Technical Field

The invention relates to the technical field of laser radars and wind power generation, in particular to a laser radar impeller monitoring device and a wind power generation device.

Background

Wind energy is clean energy, the power generation by utilizing the wind energy is an environment-friendly pollution-free power generation technology, and a wind generating set is a device for generating power by utilizing the wind energy. The wind generating set is divided into a land generating set and an offshore generating set according to different use scenes, and comprises blades, and the blades rotate to generate electricity. Because of the difference of wind power, the deformation degree of the blade in the rotating process is also different, if the wind power is overlarge, the blade is possible to deform and transit to break or impact between wind generating sets to be damaged, and in order to ensure that the blade works in a normal deformation range, the deformation degree of the blade is generally monitored by using a laser radar.

However, since the offshore wind turbine generator set is arranged on the sea or in an adjacent water area, laser acting on the water surface is completely absorbed, so that the laser ranging has no data, and the deformation degree of the blade cannot be accurately monitored.

Disclosure of Invention

In view of the above, it is desirable to provide a laser radar impeller monitoring device and a wind power generation device capable of accurately monitoring the deformation degree of the blade.

The utility model provides a laser radar impeller monitoring devices for monitor impeller position form, when the impeller received the exogenic action, the deformation of multiple form position takes place for the impeller, and the device includes: the shell and accept laser transceiver module and controller in the shell, laser transceiver module is including being connected to respectively a plurality of laser transceivers of controller, a plurality of laser transceivers correspond many laser of transmission towards multiple form position, in order to monitor the deformation of impeller and to the controller sends feedback signal, the controller basis stop signal or alarm signal are sent to feedback signal.

Further, the plurality of morphological locations includes a first morphological location and a second morphological location, the feedback signal includes a first signal and a second signal, the plurality of laser transceivers include a first laser transceiver and a second laser transceiver that emit a first laser light and a second laser light toward the first position configuration and the second position configuration, respectively, when the impeller is deformed to be located in the first position form or the second position form, the impeller reflects the first laser light or the second laser light to the first laser transceiver or the second laser transceiver, the first laser transceiver or the second laser transceiver transmitting the first signal or the second signal to the controller, and the controller sends out a stop signal or an alarm signal according to the first signal or the second signal.

Further, the multiple form positions further include a third form position, the feedback signal further includes a third signal, the multiple laser transceivers further include a third laser transceiver, the third laser transceiver emits third laser toward the third form position, when the impeller deforms and is located in the third form position, the impeller reflects the third laser to the third laser transceiver, the third laser transceiver sends the third signal to the controller, and only after the controller receives the third signal, the controller sends a stop signal or an alarm signal according to the first signal or the second signal.

Further, the laser radar impeller monitoring device further comprises an indication laser, wherein the indication laser emits fourth laser towards the third position form, and the fourth laser and the third laser coincide.

Further, the impeller includes the cusp portion, the deformation of multiple form position takes place for the impeller, the cusp portion is located different deformation positions, a plurality of laser transceivers send out many laser towards different deformation positions.

Further, an included angle between the first laser and the second laser is equal to an included angle between the second laser and the third laser.

Further, the range of the included angle between the first laser and the second laser and the range of the included angle between the second laser and the third laser are both 1.5 degrees to 2.5 degrees.

The invention also provides a wind power generation device, which comprises a support, a cabin fixed on the support, a processor arranged on the cabin, a laser radar impeller monitoring device and an impeller, wherein the laser radar impeller monitoring device and the impeller correspond to the laser radar impeller monitoring device and the impeller, and the impeller is a blade for wind power generation; the laser radar impeller monitoring device further comprises a communication module, the processor is in communication connection with the controller through the communication module, and the processor correspondingly sends out an alarm or/and stops working according to the alarm signal or/and the stop signal sent by the controller.

Further, the impeller includes a tip portion away from the nacelle, and the controller issues the warning signal or/and the stop signal according to the plurality of laser lights reflected by the tip portion received by the plurality of receivers.

Further, the communication module comprises a cable connection module and/or a wireless communication module, the cable connection module comprises a TCP/IP interface or an RS-485 interface, and the wireless communication module comprises one or more of a 2.4G module, a 3G module, a 4G module, a 5G module and a WiFi module.

The laser radar impeller monitoring device and the wind power generation device correspondingly emit a plurality of lasers in different directions to detect the positions of the impellers, and the controller sends out an alarm signal or/and a stop signal according to the positions, so that the laser radar impeller monitoring device sends out an alarm or/and stops working to monitoring personnel, the failure rate is low, the use reliability is good, and the service life is long; convenient installation and use.

Drawings

Fig. 1 is a schematic structural diagram of a laser radar impeller monitoring device according to the present invention.

Fig. 2 is a schematic structural view of the lidar wheel monitoring apparatus shown in fig. 1 with the middle housing and the front cover removed.

Fig. 3 is a block diagram of the lidar wheel monitoring apparatus shown in fig. 1.

Fig. 4 is a schematic structural view of a wind power generation device of the present invention.

Fig. 5 is a schematic structural diagram of the deformation degree of the blade of the wind power generation device monitored by the laser radar impeller monitoring device of the invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.

Referring to fig. 1 to 5, the present invention provides a laser radar impeller monitoring device 100 for monitoring the position of an impeller 230, for example, the impeller 230 may be a rotating part (e.g., a blade) of a wind power generator. The invention further provides a wind power generation device 200, which comprises a support 210, a nacelle 220 fixed on the support 210, and the laser radar impeller monitoring device 100 and the impeller 230 which are arranged in the nacelle 220. The wind power generation device 200 includes a plurality of impellers 230, the impellers 230 are blades for wind power generation, a power generation assembly is disposed inside the nacelle 220, the plurality of impellers 230 are connected to the power generation assembly, and when the impellers 230 are driven by wind power to rotate, the impellers 230 drive the power generation assembly to rotate to generate power. The wind power generation device 200 monitors the position and the shape of the impellers 230 in real time through the laser radar impeller monitoring device 100, namely, the deformation degree of the impellers 230, the laser radar impeller monitoring device 100 collects multiple sets of parameters of the impellers 230 to judge different deformation degrees of the impellers 230, and sends different signals to the wind power generation device 200 according to the deformation degrees of the impellers 230, such as an alarm signal or/and a stop signal, so that monitoring personnel can be timely reminded, the impellers 230 are prevented from being damaged due to deformation transition or collision with the support 210, the normal work of the wind power generation device 200 is ensured, and the service life of the wind power generation device is prolonged.

Specifically, the laser radar impeller monitoring device 100 includes a housing 10, an indication laser 20 housed in the housing 10, a laser transceiver module 30, a circuit board 5, a controller 50 disposed on the circuit board 5, and a communication module 40 installed outside the housing 10, where the indication laser 20, the laser transceiver module 30, and the communication module 40 are electrically connected to the controller 50, respectively. The housing 10 includes a middle case 11, and a front cover 12 and a rear cover 13 fixed to both sides of the middle case 11, the indicating laser 20 and the laser transceiver module 30 are fixed to the front cover 12 and exposed from the front cover 12, and the circuit board 5 is fixed to the rear cover 13. The communication module 40 is further connected to a processor inside the nacelle 220, so as to communicatively connect the controller 50 to the processor, so that the controller 50 can send an alarm signal or/and a stop signal to the processor, so that the processor can send an alarm to a monitoring person by flashing an indicator light outside the nacelle 220, and stop the power generation of the wind turbine generator 200.

In this embodiment, the communication module 40 includes a cable connection module 41 and a wireless communication module 42, the cable connection module 41 includes a TCP/IP interface or an RS-485 interface, and the controller 50 is communicatively connected to the processor through a network cable or an RJ45 cable. The communication module 40 includes a wireless communication module 42, such as a 2.4G module, a 3G module, a 4G module, a 5G module, and a WiFi module, and the controller 50 may also send an alarm signal or/and a stop signal to other monitoring devices through the wireless communication module 42, so as to remind monitoring personnel to process in time. In addition, a wireless communication module may be disposed in the nacelle 220 and coupled to the wireless communication module 42, such that the processor and the controller 50 may be connected via wireless communication. In other embodiments, the communication module 40 includes only one of the cable connection module 41 and the wireless communication module 42.

Further, the laser transceiver module 30 includes a plurality of laser transceivers (31, 32, 33) respectively connected to the controller 50, the plurality of laser transceivers (31, 32, 33) include a first laser transceiver 31, a second laser transceiver 32 and a third laser transceiver 33 respectively electrically connected to the controller 50, the first laser transceiver 31, the second laser transceiver 32 and the third laser transceiver 33 are used for detecting different position forms of the impeller 230 under the action of an external force (such as wind force), that is, the deformation degree of the impeller 230, and specifically, the horizontal distance between the tip 231 of the impeller 230 away from the nacelle 220 and the laser radar impeller monitoring device 100 is detected. The pointing laser 20 is used to correct the initial position of the tip portion 231, i.e., the position of the tip 231 when the impeller 230 is deformed.

Specifically, when the impeller 230 is subjected to an external force, the impeller 230 is deformed at a plurality of shape positions (S1, S2, S3), a plurality of laser beams (A, B, C) can be emitted toward the plurality of shape positions by using a plurality of laser transceivers (31, 32, 33) to monitor the deformation of the impeller 230 and send a feedback signal to the controller 50, and the controller 50 sends a stop signal or an alarm signal according to the feedback signal. The impeller 230 is deformed differently, the position of the tip 231 is also different, and the position change of the tip 231 is the largest, and the tip 231 is most easily damaged by hitting other objects, such as the bracket 210 of the wind turbine generator 200, so that the deformation position of the tip 231 is the best deformation monitoring target.

As shown in fig. 5, when the impeller 230 is acted by the wind 300, the impeller 230 is deformed at a plurality of shape positions (S1, S2, S3), the plurality of shape positions (S1, S2, S3) includes a first shape position S1, a second shape position S2 and a third shape position S3, the tip 231 is located at different deformation positions (D1, D2, D3), and the deformation positions (D1, D2, D3) include a first deformation position D1, a second deformation position D2 and a third deformation position D3. The first laser transceiver 31, the second laser transceiver 32 and the third laser transceiver 33 respectively emit first laser light a, second laser light B and third laser light C from a first deformation position D1, a second deformation position D2 and a third deformation position D3, the feedback signal comprises a first signal, a second signal and a third signal, the first signal, the second signal and the third signal respectively correspond to the feedback signal emitted by the first laser transceiver 31, the second laser transceiver 32 and the third laser transceiver 33 to the controller 50 when the tip portion (231, 231', 231 ") is at the first deformation position D1, the second deformation position D2 and the third deformation position D3, and the stop signal or the alarm signal is emitted according to the first signal or the second signal only after the controller 50 receives the third signal.

The horizontal distances between the first deformation position D1, the second deformation position D2, and the third deformation position D3 and the laser radar impeller monitoring device 100 are L1, L2, and L3, respectively, and L1, L2, and L3 decrease sequentially. That is, the first deformation position D1 is the position of the vane 230 when it is not deformed, and the distance L1 from the lidar vane monitoring apparatus 100 is the largest, and the second deformation position D2 and the third deformation position D3 are the positions of the vane 230 after it is deformed, so the distance from the lidar vane monitoring apparatus 100 gradually decreases. And an included angle a between the first laser A and the second laser B is equal to an included angle B between the second laser B and the third laser C. Optionally, an included angle a between the first laser a and the second laser B and an included angle B between the second laser B and the third laser C both range from 1.5 ° to 2.5 °.

Referring to fig. 3, before the wind turbine generator 200 is used, the indicating laser 20 is controlled to emit the indicating laser D for calibration, the irradiation angle of the indicating laser D is adjusted to just reach the tip 231, and then the third laser transceiver 33 is controlled to emit the third laser C overlapping the indicating laser D in the same direction.

Referring to fig. 1, 2 and 4, when the wind turbine generator 200 is operated, the impeller (230, 230 ', 230 ") is deformed in a direction approaching the lidar impeller monitoring apparatus 100 while rotating by the wind 300, and the impeller (230, 230', 230") is deformed at a plurality of positions (S1, S2, S3) as the wind 300 increases, wherein the plurality of positions (S1, S2, S3) are the first position S1, the second position S2 and the third position S35 3, respectively. And in the deformation process of the impeller (230, 230 ', 230 "), the tip part (231, 231', 231") gradually moves towards the laser radar impeller monitoring device 100 along with the increase of the wind force 300, and when the impeller (230, 230 ', 230 ") is located at the first form position S1, the second form position S2 and the third form position S3, the tip part (231, 231', 231") is located at the first form position D1, the second form position D2 and the third form position D3.

Specifically, when the wind force 300 is weak, the impeller 230 is hardly deformed, and in the process of rotating the tip portion 231, the tip portion 231 intermittently contacts the third laser light C to reflect the third laser light C to the third laser transceiver 33, the third laser transceiver 33 sends a third signal to the controller, and sends a detected parameter of the third laser light C to the controller 50, so that the controller 50 knows that the impeller 230 is operating in a normal range, and at this time, the distance from the tip portion 231 to the laser radar impeller monitoring device 100 is L1.

When the wind power 300 is stronger, the impeller 230 ' is obviously deformed, the second laser B can just irradiate the tip 231 ' of the impeller 230 ', the second laser transceiver 32 receives the second laser B reflected by the tip 231 ' each time when the second laser B irradiates the tip 231 ', the second laser transceiver 32 sends a third signal to the controller, and sends the detected parameter of the second laser B to the controller 50, so that the controller 50 knows that the deformation of the impeller 230 ' reaches the early warning range, the controller 50 sends the warning information to the processor through the communication module 40, the processor controls an indicator lamp outside the nacelle 220 to flash to send a warning to a monitoring person, at this time, the distance from the tip 231 ' to the laser radar impeller monitoring device 100 is L2, and L2 is smaller than L1.

When the wind force 300 is strongest, the impeller 230 ″ is greatly deformed, the first laser a just irradiates the tip 231 ″ of the impeller 230 ″, the first laser transceiver 31 receives the first laser a reflected by the tip 231 ″ each time the first laser a irradiates the tip 231 ″, the first laser transceiver 31 sends the detected parameter of the first laser a to the controller 50, so that the controller 50 knows that the deformation of the impeller 230 ″ reaches a dangerous range, if the impeller 230 ″, continues to send the deformation, the impeller 230 ″, which may touch the bracket 210, may cause a danger, or the impeller 230 ″, may be damaged due to the transition of the deformation, the controller 50 sends a stop message to the processor through the communication module 40, and the processor controls the components in the nacelle 220 to stop working (for example, a braking component is arranged in the nacelle 20, and the processor controls the braking component to stop the rotation of the impeller 230 ″), and an alarm is given to the monitoring personnel, wherein the distance between the tip 231 ″ and the lidar wheel monitoring device 100 is L3, and L3 is smaller than L2.

It is understood that the three conditions are critical conditions, and when the deformation of the impeller (230, 230', 230 ") is within the critical interval, the controller 50 sends out corresponding signals. For example, when the impeller 230 ' moves to a position between the second laser B and the first laser a, the impeller 230 ' will first pass through the second laser B, the tip 231 ' contacts and reflects the second laser B, and the second laser transceiver 32 receives the second laser B and causes the controller 50 to send an alarm signal to the processor.

When the vane 230 ″ moves toward the first laser a and contacts the first laser a, the vane 230 ″ first passes through the second laser B, the second laser transceiver 32 first receives the second laser B and causes the controller 50 to send an alarm signal, and the first laser transceiver 31 then receives the first laser a reflected by the tip 231 ″ of the vane 230 ″ and causes the controller 50 to send the stop signal.

That is, since the deformation direction of the impeller 230 is from the third laser C to the first laser a, the impeller 230 will pass through the second laser B and the first laser a only after passing through the third laser C, the contact position of the impeller 230 and the third laser C is the initial monitoring position, and the second laser B is the critical position for alarming, therefore, only after the third receiver 33 receives the third laser C, the controller 50 sends out the alarm signal or/and the stop signal only after the second receiver 32 receives the second laser B or/and the first receiver 31 receives the first laser a, thereby avoiding the erroneous judgment of the controller 50 caused by the deformation of the impeller 230 due to the impact of an external force (such as bird impact), and improving the monitoring accuracy of the laser radar impeller monitoring device 100.

As can be seen, the laser radar vane monitoring device 100 and the wind power generation device 200 correspondingly emit a plurality of lasers (A, B, C) in different directions to detect the positions of the vanes (230, 230', 230 "), and the controller 50 sends out an alarm signal or/and a stop signal according to the positions, so that the laser radar vane monitoring device 100 sends out an alarm or/and stops working to monitoring personnel, and therefore, the failure rate is low, the use reliability is good, and the service life is long; convenient installation and use.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.

Claims

1. The utility model provides a laser radar impeller monitoring devices for monitor impeller position form, the deformation that takes place multiple form position when the impeller receives exogenic action, its characterized in that, it includes: the shell and accept laser transceiver module and controller in the shell, laser transceiver module is including being connected to respectively a plurality of laser transceivers of controller, a plurality of laser transceivers are towards multiple the form position corresponds many laser of transmission to the monitoring deformation of impeller and to the controller sends feedback signal, the controller basis the feedback signal sends stop signal or alarm signal.

2. The lidar vane monitoring device of claim 1, wherein the plurality of positions includes a first position and a second position, the feedback signal includes a first signal and a second signal, the plurality of laser transceivers includes a first laser transceiver and a second laser transceiver, the second laser transceiver and the second laser transceiver respectively emit a first laser and a second laser toward the first position and the second position, the vane reflects the first laser or the second laser to the first laser transceiver or the second laser transceiver when the vane is deformed to be located in the first position or the second position, the first laser transceiver or the second laser transceiver transmits the first signal or the second signal to the controller, and the controller sends out a stop signal or an alarm signal according to the first signal or the second signal.

3. The lidar impeller monitoring device of claim 2, wherein the plurality of positions further includes a third position, the feedback signal further includes a third signal, the plurality of laser transceivers further includes a third laser transceiver, the third laser transceiver emits a third laser toward the third position, when the impeller deforms and is located in the third position, the impeller reflects the third laser to the third laser transceiver, the third laser transceiver transmits the third signal to the controller, and only after the controller receives the third signal, the controller transmits a stop signal or an alarm signal according to the first signal or the second signal.

4. The lidar wheel monitoring device of claim 3, further comprising an indicator laser that emits a fourth laser toward the third position configuration, the fourth laser coinciding with the third laser.

5. The lidar wheel monitoring device of claim 1, wherein the wheel includes a tip portion, wherein the wheel deforms in a plurality of positions, wherein the tip portion is at different positions, and wherein the plurality of laser transceivers emit a plurality of lasers toward the different positions.

6. The lidar wheel monitoring device of claim 3, wherein an angle between the first laser and the second laser is equal to an angle between the second laser and the third laser.

7. The lidar wheel monitoring device of claim 6, wherein an angle between the first laser and the second laser and an angle between the second laser and the third laser are each in a range of 1.5 ° to 2.5 °.

8. A wind power generation device, comprising a support, a nacelle fixed on the support, and a processor, a lidar vane monitoring device and an impeller mounted on the nacelle, wherein the lidar vane monitoring device and the impeller correspond to the lidar vane monitoring device and the impeller of any one of claims 1 to 7, and the impeller is a blade for wind power generation; the laser radar impeller monitoring device further comprises a communication module, the processor is in communication connection with the controller through the communication module, and the processor correspondingly sends out an alarm or/and stops working according to the alarm signal or/and the stop signal sent by the controller.

9. The wind power plant according to claim 8, wherein said impeller comprises a tip portion remote from said nacelle, and said controller emits said warning signal or/and said stop signal in response to said plurality of lasers reflected by said tip portion received by said plurality of receivers.

10. The wind power plant of claim 8, wherein the communication module comprises a cable connection module comprising a TCP/IP interface or an RS-485 interface and/or a wireless communication module comprising one or more of a 2.4G, 3G, 4G, 5G and WiFi module.