Wind generating set blade clearance protection device

Abstract

The utility model relates to the technical field of wind generating set blade clearance protection, in particular to a wind generating set blade clearance protection device which comprises a fan housing and a box body installed on the fan housing, a monitoring window is installed on the top of the box body, a transparent plate is installed on the inclined face of the top of the monitoring window, and the transparent plate is arranged on the inclined face of the top of the box body. A transparent plate is fixed to the top end of the monitoring window, a reciprocating driving assembly is installed at the top end of the monitoring window, and a brush strip attached to the surface of the transparent plate is fixed to the moving end of the reciprocating driving assembly. The reciprocating driving assembly is controlled to drive the brush strip to slide back and forth along the surface of the transparent plate, dust attached to the surface of the transparent plate is cleaned, and it can be avoided that the monitoring assembly accurately measures the distance of the blade of the wind driven generator.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade clearance protection technology, specifically a wind turbine blade clearance protection device. Background Technology

[0002] With the continuous development of wind power generation technology, the scale and capacity of wind turbine generators are constantly increasing, and the size of the blades is also increasing accordingly. During the operation of wind turbine generators, the clearance distance between the blades and surrounding structures (such as towers) is crucial. Insufficient clearance distance may cause the blades to collide with towers and other components, resulting in equipment damage and safety accidents. Although existing clearance protection devices can monitor the clearance distance of blades and provide early warnings to a certain extent, they still have some shortcomings. For example, patent CN215830641U discloses a wind turbine generator blade clearance protection device, which mainly uses a laser ranging device for monitoring. However, the laser ranging device is installed in a mounting frame and fixed with a pressure plate. The exposed laser ranging device is prone to accumulating a large amount of dust, making it difficult to clean in a timely manner and affecting the measurement accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a wind turbine blade clearance protection device to solve the problems mentioned in the background art.

[0004] The technical solution of this utility model is: a wind turbine blade clearance protection device, including a wind turbine casing and a housing installed on the wind turbine casing. A monitoring window is installed on the top of the housing, and a transparent plate is installed on the top inclined surface of the monitoring window. A reciprocating drive assembly is installed at the top of the monitoring window. A brush strip that is in contact with the surface of the transparent plate is fixed on the moving end of the reciprocating drive assembly. A bracket located below the monitoring window is installed inside the housing. An angle adjustment mechanism is installed on the bracket, and a monitoring assembly is fixed on the rotating end of the angle adjustment mechanism.

[0005] The aforementioned components achieve the following effects: the housing protects the monitoring components below the monitoring window; when the transparent plate surface on the monitoring window needs cleaning, the reciprocating drive component is controlled to move the brush back and forth along the transparent plate surface to clean the dust adhering to the transparent plate surface, thus avoiding affecting the monitoring components' accurate distance measurement of the wind turbine blades; in addition, the angle adjustment mechanism allows the monitoring components to adjust the measurement angle, facilitating testing.

[0006] Preferably, the reciprocating drive assembly includes a guide tube fixed to the top of the monitoring window, a slot on one side of the guide tube that slides with the brush strip, a drive motor fixed to one end of the guide tube, a reciprocating lead screw extending into the guide tube fixed to the output shaft of the drive motor, and a reciprocating slider connected to the top of the brush strip threaded on the reciprocating lead screw.

[0007] The aforementioned components achieve the following effect: the drive motor can drive the reciprocating lead screw to rotate, and in conjunction with the reciprocating slider, it can drive the brush strip to move back and forth along the top of the transparent plate, thereby achieving the purpose of reciprocating cleaning.

[0008] Preferably, the angle adjustment mechanism includes a rotating shaft rotatably mounted on the bracket, a gear fixed at one end of the rotating shaft, a rack meshing with the bottom end of the gear, an electric push rod mounted on the bracket connected to the bottom of the rack, and the monitoring component mounted on the rotating shaft.

[0009] The effect achieved by the above components is that the electric push rod can drive the rack to slide laterally, which in turn drives the rotating shaft to rotate, thereby achieving the purpose of adjusting the angle of the monitoring component.

[0010] Preferably, the monitoring component includes a positioning seat fixed on the rotating shaft, and an image acquisition module and a ranging module are installed on the positioning seat.

[0011] The aforementioned components achieve the following effects: the image acquisition module is used to acquire image information of the environment surrounding the blades and tower, enabling more comprehensive monitoring of the blades' position and attitude; the distance measuring module is used to measure the distance between the blades and tower in real time, employing a high-precision laser transmitting and receiving device to quickly and accurately acquire distance data; by combining the distance measuring module and the image acquisition module, the accuracy and reliability of clearance distance monitoring are improved, enabling not only accurate distance measurement but also a comprehensive understanding of the blades' position and attitude changes through image analysis.

[0012] Preferably, the outer side of the box body has a side opening, and a door panel is hinged to the side opening, with the edge of the door panel sealed and fitted between the side openings.

[0013] The effect achieved by the above components is that the openable door panel facilitates the later maintenance of the device.

[0014] This utility model provides an improved wind turbine blade clearance protection device, which has the following improvements and advantages compared with the prior art:

[0015] Firstly, this utility model can protect the monitoring components below the monitoring window through the housing. When the surface of the transparent plate on the monitoring window needs to be cleaned, it is only necessary to control the reciprocating drive component to drive the brush strip to slide back and forth along the surface of the transparent plate to clean the dust adhering to the surface of the transparent plate, which can avoid affecting the monitoring components to accurately measure the distance of the wind turbine blades.

[0016] Secondly, this invention improves the accuracy and reliability of clearance distance monitoring by combining a ranging module and an image acquisition module. The included angle adjustment mechanism uses an electric push rod to drive a rack to slide laterally, which in turn drives a rotating shaft to rotate, thus allowing for angle adjustment of the monitoring components when necessary. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the monitoring window structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the monitoring window in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Fan housing; 2. Box body; 3. Monitoring window; 4. Monitoring components; 41. Positioning seat; 42. Image acquisition module; 43. Distance measuring module; 5. Transparent plate; 6. Reciprocating drive assembly; 61. Guide tube; 62. Groove; 63. Reciprocating lead screw; 64. Reciprocating slider; 65. Drive motor; 7. Brush bar; 8. Bracket; 9. Angle adjustment mechanism; 91. Electric push rod; 92. Rack; 93. Rotating shaft; 94. Gear. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0023] This utility model provides an improved wind turbine blade clearance protection device. The technical solution of this utility model is as follows:

[0024] An embodiment of this utility model provides a wind turbine blade clearance protection device, the structure of which is as follows: Figures 1-3The diagram shows a fan housing 1 and a box 2 mounted on the fan housing 1. The box 2 protects the monitoring component 4 below the monitoring window 3. A side opening is provided on the outer side of the box 2, and a door panel is hinged to the side opening. The edge of the door panel is sealed between the side openings, allowing for easy maintenance of the device. The monitoring window 3 is mounted on the top of the box 2, and a transparent plate 5 is mounted on the top slope of the monitoring window 3. A reciprocating drive assembly 6 is mounted on the top of the monitoring window 3, and a brush strip 7, which is attached to the surface of the transparent plate 5, is fixed to the moving end of the reciprocating drive assembly 6. 6 includes a guide tube 61 fixed to the top of the monitoring window 3. A slot 62 is provided on one side of the guide tube 61 to slide with the brush strip 7. A drive motor 65 is fixed to one end of the guide tube 61. A reciprocating screw 63 extending into the guide tube 61 is fixed to the output shaft of the drive motor 65. A reciprocating slider 64 connected to the top of the brush strip 7 is threaded onto the reciprocating screw 63. The drive motor 65 can drive the reciprocating screw 63 to rotate, and in conjunction with the reciprocating slider 64, the brush strip 7 can slide back and forth along the surface of the transparent plate 5 to clean the dust adhering to the surface of the transparent plate 5, thus avoiding... The unaffected monitoring component 4 accurately measures the distance to the wind turbine blades. Inside the housing 2, a bracket 8 is installed below the monitoring window 3. An angle adjustment mechanism 9 is mounted on the bracket 8. The angle adjustment mechanism 9 includes a rotating shaft 93 rotatably mounted on the bracket 8. A gear 94 is fixed to one end of the rotating shaft 93, and a rack 92 meshes with the bottom end of the gear 94. An electric push rod 91, mounted on the bracket 8, is connected to the bottom of the rack 92. The monitoring component 4 is mounted on the rotating shaft 93. The electric push rod 91 drives the rack 92 to slide laterally, which in turn, in conjunction with the gear 94, drives the rotating shaft 93 to rotate, thus achieving monitoring. The purpose of angle adjustment of component 4 is to monitor component 4, which is fixed on the rotating end of angle adjustment mechanism 9. Monitoring component 4 includes positioning seat 41 fixed on rotating shaft 93. Image acquisition module 42 and distance measuring module 43 are installed on positioning seat 41. Image acquisition module 42 is used to acquire image information of the environment around the blade and tower so as to monitor the position and attitude of the blade more comprehensively. Distance measuring module 43 is mainly a laser distance measuring sensor, which is used to measure the distance between the blade and the tower in real time. It adopts a high-precision laser emitting and receiving device, which can quickly and accurately acquire distance data.

[0025] The working principle of the wind turbine blade clearance protection device provided by this utility model is as follows: The housing 2 can protect the monitoring component 4 below the monitoring window 3. When the surface of the transparent plate 5 on the monitoring window 3 needs to be cleaned, the drive motor 65 can drive the reciprocating screw 63 to rotate, and the reciprocating slider 64 can drive the brush 7 to move back and forth along the top of the transparent plate 5 to clean the dust adhering to the surface of the transparent plate 5. The image acquisition module 42 is used to acquire image information of the environment around the blade and the tower, so as to monitor the position and attitude of the blade more comprehensively. The distance measuring module 43 is used to measure the distance between the blade and the tower in real time. It adopts a high-precision laser emitting and receiving device, which can quickly and accurately acquire distance data. In addition, the electric push rod 91 can drive the rack 92 to slide laterally, and then, in conjunction with the gear 94, drive the rotating shaft 93 to rotate the monitoring component 4 to adjust the measurement angle. The specific working principle and process of the image acquisition module 42 and the distance measuring module 43 in this embodiment are existing technologies in this field, and will not be described in detail here.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade clearance protection device comprising a wind turbine housing (1) and a box (2) mounted on the wind turbine housing (1), characterized in that: The top of the box (2) is provided with a monitoring window (3), the top inclined surface of the monitoring window (3) is provided with a transparent plate (5), the top end of the monitoring window (3) is provided with a reciprocating driving assembly (6), the moving end of the reciprocating driving assembly (6) is fixedly provided with a brush strip (7) abutting the surface of the transparent plate (5), the box (2) is internally provided with a bracket (8) below the monitoring window (3), the bracket (8) is provided with an angle adjusting mechanism (9), and the rotating end of the angle adjusting mechanism (9) is fixedly provided with a monitoring assembly (4).

2. A wind turbine blade clearance protection device according to claim 1, characterised in that: The reciprocating driving assembly (6) comprises a guide pipe (61) fixedly arranged at the top of the monitoring window (3), a notch (62) is formed in one side of the guide pipe (61) and in sliding fit with the brush strip (7), one end of the guide pipe (61) is fixedly provided with a driving motor (65), the output shaft of the driving motor (65) is fixedly provided with a reciprocating lead screw (63) extending into the guide pipe (61), and the reciprocating lead screw (63) is threadedly provided with a reciprocating sliding block (64) connected with the top end of the brush strip (7).

3. A wind turbine blade tip protection device according to claim 1, characterized in that: The angle adjusting mechanism (9) comprises a rotating shaft (93) rotatably arranged on the bracket (8), one end of the rotating shaft (93) is fixedly provided with a gear (94), the gear (94) is in meshing transmission with a rack (92) at the bottom end, the rack (92) is connected with an electric push rod (91) arranged on the bracket (8), and the monitoring assembly (4) is arranged on the rotating shaft (93).

4. A wind turbine blade tip protection device according to claim 3, characterised in that: The monitoring assembly (4) comprises a positioning seat (41) fixedly arranged on the rotating shaft (93), and an image acquisition module (42) and a distance measuring module (43) are arranged on the positioning seat (41).

5. A wind turbine blade tip protection device according to claim 1, wherein: The box (2) is externally provided with side openings, the side openings are hingedly provided with door plates, and the edges of the door plates are sealingly abutted between the side openings.

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