A sentinel lidar wind finding device

Abstract

This invention belongs to the field of radar wind measurement technology, specifically a sentinel lidar wind measurement device. It includes a servo motor mounted on the top outer wall of the housing. The output shaft of the servo motor is fixedly connected to a rotating plate via a coupling. A first electric push rod is hinged to the inner wall of the rotating plate. The piston rod of the first electric push rod is hinged to a support plate. An optical transmitter is mounted on the top outer wall of the support plate, and a top cover is installed on the top outer wall of the optical transmitter. A storage frame is welded to the top outer wall of the top cover. This invention uses the servo motor to drive the rotating plate to rotate, which, in conjunction with the first electric push rod, pushes the support plate to adjust the angle. This enables the optical transmitter to perform 360° horizontal rotation and multi-angle pitch adjustment, solving the problem of fixed detection angle in traditional devices and improving the all-round monitoring coverage capability of the "sentinel." The cleaning component can automatically clean the top cover, solving the problems of high cost and reduced accuracy associated with manual cleaning.

Description

Technical Field

[0001] This utility model relates to the field of radar wind measurement technology, and in particular to a sentinel lidar wind measurement device. Background Technology

[0002] The Sentinel LiDAR wind measurement device is a device that emits a laser beam through an optical transmitter and uses the laser echo to detect meteorological parameters such as wind speed and wind direction. Because of its rapid response and accurate measurement, it is known as the "weather sentinel". In wind farm scenarios, this device can monitor the wind conditions around the wind turbine in real time and provide data support for wind turbine power adjustment and safe operation.

[0003] The Sentinel lidar wind measurement device has two shortcomings in practical use:

[0004] First, the optical transmitter needs to be installed on the top of the wind turbine casing to obtain a wide field of view for monitoring. However, the traditional device has a fixed detection angle or is cumbersome to adjust, making it difficult to flexibly cover the area swept by the wind turbine blades and the surrounding wind field, which affects the all-round monitoring of the key areas of wind turbine operation.

[0005] Secondly, the optical transmitter on the top of the wind turbine casing is exposed to the outdoor wind field environment for a long time. It is easy for sand and dust to accumulate on the surface of the top cover, requiring manual climbing of the wind turbine for cleaning. This not only has high maintenance costs and poor safety, but may also cause laser refraction deviation due to untimely cleaning, affecting the accuracy of wind speed measurement. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a sentinel lidar wind measurement device, which overcomes the shortcomings of the prior art and effectively solves the problems of cumbersome fixed or adjustable optical transmitter detection angle and easy accumulation of dust and impurities in optical transmitter.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A sentinel lidar wind measurement device includes a servo motor mounted on the top outer wall of the housing. The output shaft of the servo motor is fixedly connected to a rotating plate via a coupling. A first electric push rod is hinged to the inner wall of the rotating plate. The piston rod of the first electric push rod is hinged to a support plate. An optical transmitter is provided on the top outer wall of the support plate. A top cover is installed on the top outer wall of the optical transmitter. A storage frame is welded to the top outer wall of the top cover. A cleaning component is provided on the top outer wall of the storage frame.

[0009] Preferably, the cleaning assembly includes a second electric push rod, a connecting plate, a brush, and a nozzle. The second electric push rod is fixedly connected to the top outer wall of the storage frame by screws, the connecting plate is fixedly connected to the piston rod of the second electric push rod, the brush is adhered to one side outer wall of the connecting plate, and the nozzle is installed through the top inner wall of the connecting plate.

[0010] Preferably, the cleaning assembly further includes a water inlet pipe, a water pump, and a water tank, wherein the water inlet pipe is fixedly connected to the top outer wall of the nozzle, the water pump is fixedly connected to the outer wall of one end of the water inlet pipe, and the water tank is installed on the outer wall of one side of the water pump.

[0011] Preferably, both the brush and the nozzle are located inside the storage frame.

[0012] Preferably, the water tank is installed inside the casing, and the drain hole of the water tank is connected to the inlet of the water pump.

[0013] Preferably, the support plate is hinged to the top outer wall of the rotating plate, and an array of connecting rods are fixedly connected between the support plate and the optical transmitter.

[0014] Preferably, a control box is installed inside the housing, and the control box contains a radar controller, a data processing unit, and a layout optimization processor.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The sentinel lidar wind measurement device designed in this paper uses a servo motor to drive the rotating plate to rotate, and the first electric push rod pushes the support plate to adjust the angle, so as to realize the optical transmitter to perform 360° horizontal rotation and multi-angle pitch adjustment, which solves the problem of fixed detection angle of traditional devices and improves the all-round monitoring coverage capability of the "sentinel".

[0017] 2. The sentinel lidar wind measurement device designed in this paper has a cleaning component that can automatically clean the top cover. The water pump draws water from the water tank and sprays it through the nozzle. The second electric push rod drives the brush to wipe it, which does not require manual operation. In addition, the storage box can store the cleaning components to avoid affecting the detection. This solves the problems of high cost and reduced accuracy of manual cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a sentinel lidar wind measurement device proposed in this utility model;

[0019] Figure 2 A schematic diagram of the optical transmitter connection structure of the sentinel lidar wind measuring device proposed in this utility model. Figure 1 ;

[0020] Figure 3 A schematic diagram of the optical transmitter connection structure of the sentinel lidar wind measuring device proposed in this utility model. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the cleaning component structure of a sentinel lidar wind measuring device proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the installation of a sentinel lidar wind measuring device proposed in this utility model onto a wind turbine.

[0023] Figure 6 for Figure 5 An enlarged schematic diagram of part A of the structure.

[0024] In the diagram: 1. Housing; 2. Servo motor; 3. Rotating plate; 4. First electric push rod; 5. Support plate; 6. Optical transmitter; 7. Top cover; 8. Storage frame; 9. Cleaning assembly; 91. Second electric push rod; 92. Connecting plate; 93. Brush; 94. Nozzle; 95. Water inlet pipe; 96. Water pump; 97. Water tank; 10. Connecting rod; 11. Control box. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0026] Reference Figures 1-4 Example 1: A sentinel lidar wind measurement device includes a servo motor 2 mounted on the top outer wall of a housing 1. The output shaft of the servo motor 2 is fixedly connected to a rotating plate 3 via a coupling. A first electric push rod 4 is hinged to the inner wall of the rotating plate 3. The piston rod of the first electric push rod 4 is hinged to a support plate 5. An optical transmitter 6 is provided on the top outer wall of the support plate 5, and a top cover 7 is installed on the top outer wall of the optical transmitter 6. The support plate 5 is hinged to the top outer wall of the rotating plate 3, and an array of connecting rods 10 are fixedly connected between the support plate 5 and the optical transmitter 6. A control box 11 is installed inside the housing 1, and a radar controller, a data processing unit, and a layout optimization processor are provided inside the control box 11.

[0027] The servo motor 2 at the bottom of the optical transmitter 6 is fixed to the reserved mounting base on the top of the fan housing 1 by high-strength bolts. The control box 11 is fixedly installed in the equipment compartment inside the fan housing 1. The two are connected by a waterproof cable to realize the transmission of signals and control commands. The housing 1 serves as the equipment base. The servo motor 2 on the top of the housing 1 drives the rotating plate 3 to rotate through a coupling. When the first electric push rod 4, which is hinged on the rotating plate 3, extends or retracts, it can push the support plate 5 to rotate around the hinge point, thereby adjusting the pitch angle of the optical transmitter 6. The support plate 5 and the optical transmitter 6 are connected by an array link 10 to enhance stability.

[0028] Servo motor 2 drives rotating plate 3 to achieve 360° horizontal rotation, and preset blade rotation restricted area (avoiding the 120° fan-shaped area swept by the blade) to ensure monitoring safety; first electric push rod 4 pushes support plate 5 to achieve pitch adjustment from -10° to 60°, which can cover the swept area of ​​wind turbine blade from bottom to top and the surrounding two-kilometer wind field, meeting the monitoring needs of wind farm "single unit perimeter + regional linkage";

[0029] The control box 11 inside the casing 1 integrates a radar controller, a data processing unit, and a layout optimization processor. It is connected to the main control system of the wind turbine via an interface. The optical transmitter 6 can be of model LD-100, and the control box 11 inside the casing 1 can be of model PLC-200. The radar controller is used to adjust the laser emission parameters of the optical transmitter 6. The data processing unit analyzes the echo signal and can remove invalid data during the blade occlusion period. The layout optimization processor can link the wind measurement data with the wind turbine operating parameters (such as blade speed and pitch angle) for analysis, directly providing a basis for wind turbine power adjustment.

[0030] In this embodiment, the servo motor 2 drives the rotating plate 3 to rotate, and the first electric push rod 4 pushes the support plate 5 to adjust the angle, so that the optical transmitter 6 can perform 360° horizontal rotation and multi-angle pitch adjustment, which solves the problem of fixed detection angle of traditional devices and improves the all-round monitoring coverage capability of the "sentinel".

[0031] In embodiment two, a storage frame 8 is welded to the top outer wall of the top cover 7, and a cleaning component 9 is provided on the top outer wall of the storage frame 8. The cleaning component 9 includes a second electric push rod 91, a connecting plate 92, a brush 93, and a nozzle 94. The second electric push rod 91 is fixedly connected to the top outer wall of the storage frame 8 by screws. The connecting plate 92 is fixedly connected to the piston rod of the second electric push rod 91. The brush 93 is adhered to one side outer wall of the connecting plate 92. The nozzle 94 is installed through the connecting plate 92. On the top inner wall of plate 92, the cleaning assembly 9 also includes a water inlet pipe 95, a water pump 96, and a water tank 97. The water inlet pipe 95 is fixedly connected to the top outer wall of the nozzle 94, the water pump 96 is fixedly connected to the outer wall of one end of the water inlet pipe 95, and the water tank 97 is installed on one side outer wall of the water pump 96. The brush 93 and the nozzle 94 are both located inside the storage frame 8. The water tank 97 is installed inside the housing 1, and the drain hole of the water tank 97 is connected to the water inlet of the water pump 96.

[0032] The storage frame 8 on top of the top cover 7 is used to hold the cleaning components 9. When the second electric push rod 91 extends or retracts, the connecting plate 92 drives the brush 93 and the nozzle 94 to move; the water pump 96 pumps water from the water tank 97 to the nozzle 94 through the water inlet pipe 95 to achieve water spray cleaning. In the non-cleaning state, the brush 93 and the nozzle 94 are stored in the storage frame 8 to avoid interfering with laser emission.

[0033] In this embodiment, the cleaning component 9 can automatically clean the top cover 7. The water pump 96 draws water from the water tank 97 and sprays it through the nozzle 94. The second electric push rod 91 drives the brush 93 to wipe it. No manual operation is required. In addition, the storage box 8 can store the cleaning components to avoid affecting the detection. This solves the problems of high cost and reduced accuracy of manual cleaning.

[0034] Working principle:

[0035] I. Wind Farm Layout Methods:

[0036] Single unit monitoring: Each wind turbine is equipped with a device on top. The monitoring range of the optical transmitter 6 covers the area swept by the blades of the turbine (within a radius of 50 meters) and the incoming wind field 300 meters downwind, for real-time wind condition early warning for a single unit.

[0037] Regional linkage: According to the wind turbine layout of the wind farm (such as "row and column" layout), the device of the first and last wind turbine in each row is selected as the "main sentinel". Its optical transmitter 6 is adjusted to a 45° pitch angle, and the monitoring area is extended to the upstream wind farm one kilometer away. The data is collected to the wind farm central control system to realize regional wind condition prediction.

[0038] II. Operational Procedure:

[0039] Monitoring Phase: Control box 11 receives operating parameters from the wind turbine main control system, and the radar controller activates optical transmitter 6. Servo motor 2 drives rotating plate 3 to rotate within a safe angle, first electric push rod 4 adjusts the pitch angle, laser beam scans the preset wind field area, and echo signals are analyzed by data processing unit into wind speed and wind direction data, which are synchronously transmitted to the wind turbine main control system (e.g., when wind speed > 12m / s, a wind turbine speed reduction command is triggered).

[0040] Cleaning phase: When dust on the surface of the optical transmitter 6 causes the laser emission power to decrease by more than 10%, the control box 11 starts the cleaning component 9 when the fan is running at a low wind speed (<3m / s). The water pump 96 draws water from the water tank 97 and sprays it from the nozzle 94 through the water inlet pipe 95. The second electric push rod 91 pushes the connecting plate 92, so that the brush 93 rubs the surface of the optical transmitter 6 back and forth. After completion, the brush 93 and the nozzle 94 are retracted into the storage frame 8, and the device resumes monitoring.

Claims

1. A sentinel lidar wind measurement device, comprising a servo motor (2) mounted on the top outer wall of a housing (1), characterized in that, The output shaft of the servo motor (2) is fixedly connected to a rotating plate (3) via a coupling, and a first electric push rod (4) is hinged to the inner wall of the rotating plate (3). The piston rod of the first electric push rod (4) is hinged to a support plate (5). An optical transmitter (6) is provided on the top outer wall of the support plate (5), and a top cover (7) is installed on the top outer wall of the optical transmitter (6). A storage frame (8) is welded to the top outer wall of the top cover (7), and a cleaning component (9) is provided on the top outer wall of the storage frame (8).

2. The sentinel lidar wind measurement device according to claim 1, characterized in that, The cleaning assembly (9) includes a second electric push rod (91), a connecting plate (92), a brush (93), and a nozzle (94). The second electric push rod (91) is fixedly connected to the top outer wall of the storage frame (8) by screws. The connecting plate (92) is fixedly connected to the piston rod of the second electric push rod (91). The brush (93) is adhered to one side outer wall of the connecting plate (92). The nozzle (94) is installed through the top inner wall of the connecting plate (92).

3. The sentinel lidar wind measurement device according to claim 1, characterized in that, The cleaning assembly (9) also includes an inlet pipe (95), a water pump (96), and a water tank (97). The inlet pipe (95) is fixedly connected to the top outer wall of the nozzle (94), the water pump (96) is fixedly connected to the outer wall of one end of the inlet pipe (95), and the water tank (97) is installed on the outer wall of one side of the water pump (96).

4. The sentinel lidar wind measurement device according to claim 2, characterized in that, The brush (93) and the nozzle (94) are both located inside the storage frame (8).

5. A sentinel lidar wind measurement device according to claim 3, characterized in that, The water tank (97) is installed inside the housing (1), and the drain hole of the water tank (97) is connected to the inlet of the water pump (96).

6. The sentinel lidar wind measurement device according to claim 1, characterized in that, The support plate (5) is hinged to the top outer wall of the rotating plate (3), and an array of connecting rods (10) are fixedly connected between the support plate (5) and the optical transmitter (6).

7. A sentinel lidar wind measurement device according to claim 1, characterized in that, The housing (1) is equipped with a control box (11), which contains a radar controller, a data processing unit and a layout optimization processor.

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