Fan blade monitoring sensor mounting structure

Abstract

The utility model belongs to the field of fan blades, and particularly relates to a fan blade monitoring sensor mounting structure which comprises a mounting lug plate, an integrally formed structure is adopted between the mounting lug plate and a shell of a sensor body, the mounting lug plate is mounted on a mounting base through a bolt connecting structure, and the mounting base is fixedly mounted on a fan blade through a bonding layer. The bolt connecting structure comprises a mounting threaded rod, the mounting threaded rod is fixedly connected to the mounting base, and a mounting nut is mounted at the end of the mounting threaded rod in a threaded connection mode; and the limiting mechanism comprises a limiting rotary disc which rotates in a one-way mode in the screwing direction of the installation nut, the limiting rotary disc is rotationally arranged on the installation lug plate, and the limiting rotary disc and the installation through hole are coaxially arranged. Due to the fact that the limiting mechanism is arranged, the installation nut can only rotate in the screwing direction, the installation nut cannot rotate in the reverse direction, and the stability and reliability of the bolt connection mode between the installation lug plate and the installation base are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of fan blades, in particular to a fan blade monitoring sensor installation structure. Background Art

[0002] As a clean energy, wind energy is gaining more and more attention.

[0003] Wind blades are one of the core components of wind turbines.

[0004] In the prior art, most wind turbines are located outdoors in unattended areas, so when a wind turbine blade fails, it is not easy to detect. Therefore, it is very important to collect data on the wind turbine blades.

[0005] The vibration-based fan blade monitoring sensor is one of the commonly used sensors for monitoring the operating status of fan blades.

[0006] The fan blade vibration sensor is generally installed at a position 1 / 3 of the total length of the fan blade from the blade root. The fan blade data acquisition device is installed at the hub and rotates with the impeller. For the fan that has been put into operation, the fan blade 10 vibration sensor must be installed by adjusting the fan blade to a horizontal position. The installer enters the inside of the fan blade and extends forward about 30m to install the sensor. The multi-core cable of the sensor adopts an S-shaped routing and is adhered to the root of the fan blade with strong glue.

[0007] In the installation process of the sensor, the sensor base is bonded and fixed to the blade by structural adhesive; wherein, the sensor and the sensor base are installed by bolt connection. However, since the fan blades will vibrate during operation, the above-mentioned bolt connection structure will loosen after a long time, which may easily cause the connection between the sensor and the sensor base to loosen. In severe cases, the sensor may fall off, affecting the data collection process of the fan blades. Utility Model Content

[0008] The purpose of the embodiment of the utility model is to provide a fan blade monitoring sensor installation structure, aiming to solve the technical problems raised in the above-mentioned background technology.

[0009] To achieve the above objectives, the utility model provides the following technical solutions.

[0010] A fan blade monitoring sensor installation structure, comprising:

[0011] An installation ear plate, wherein the installation ear plate and the housing of the sensor body are formed in an integral structure, the installation ear plate is installed on the installation base through a bolt connection structure, and the installation base is fixedly installed on the fan blade through an adhesive layer; the bolt connection structure includes a mounting threaded rod, the mounting threaded rod is fixedly connected to the mounting base, and a mounting through hole matching the mounting threaded rod is provided on the installation ear plate, and a mounting nut is installed at the end of the mounting threaded rod passing through the mounting through hole through a threaded connection, and the connection and fixation between the installation ear plate and the mounting base is achieved by tightening the mounting nut;

[0012] The limiting mechanism comprises a limiting turntable which rotates unidirectionally along the tightening direction of the mounting nut, the limiting turntable is rotatably arranged on the mounting ear plate, and the limiting turntable is coaxially arranged with the mounting through hole.

[0013] As a further limitation of the scheme of the utility model, an angular groove is set on the limit turntable along the central axis of the limit turntable, and the angular groove matches the mounting nut. When the mounting nut is in a tightened state, the mounting nut is against the angular groove. At this time, when the mounting nut rotates, it will drive the limit turntable to rotate synchronously.

[0014] As a further limitation of the scheme of the utility model, the outer ring of the limit turntable is processed with multiple limit grooves at equal intervals, and the limit mechanism also includes a limit rod, one end of which is rotatably connected to the hinged connecting column, and the hinged connecting column is fixedly mounted on the mounting ear plate so that the limit rod can rotate around the hinged connecting column; the other end of the limit rod is integrally formed with a limit protrusion matching the limit groove.

[0015] As a further limitation of the scheme of the utility model, the limiting mechanism also includes a torsion spring and a positioning column, the positioning column is fixedly connected to the mounting ear plate, and the torsion spring is also provided with a first rod body and a second rod body, the first rod body is against the positioning column, and the second rod body is against the limiting rod, and the torsion spring is used to make the limiting protrusion against the limiting groove, so that the limiting turntable can only rotate in one direction, and the direction of the one-way rotation is consistent with the tightening direction of the mounting nut.

[0016] As a further limitation of the solution of the utility model, a data transmission cable is connected to the sensor body, and the data transmission cable is used for transmitting the collected data.

[0017] As a further limitation of the solution of the utility model, the sensor body adopts RH125TYD acceleration sensor.

[0018] Compared with the prior art, the beneficial effects of the fan blade monitoring sensor installation structure of the utility model are:

[0019] First, the sensor body of the utility model is integrally formed with a mounting ear plate, and the mounting ear plate is mounted on the mounting base by threaded connection between the mounting nut and the mounting threaded rod, and the mounting base is fixedly mounted on the fan blade through an adhesive layer, which facilitates the installation and fixation of the sensor body;

[0020] Secondly, since the utility model is provided with a limiting mechanism, the mounting nut can only rotate in the tightening direction and cannot rotate in the opposite direction, thereby ensuring the stability and reliability of the bolt connection between the mounting ear plate and the mounting base, and being able to solve the problem in the prior art that the connection between the sensor and the sensor base is easily loosened due to the vibration generated during the operation of the fan blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0022] Figure 1 This is a structural diagram of a fan blade monitoring sensor installation structure of the utility model;

[0023] Figure 2 A schematic diagram of a mounting base in a sensor mounting structure provided by the utility model;

[0024] Figure 3 A schematic diagram of a sensor body in the sensor installation structure provided by the utility model;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0026] Figure 5 A schematic diagram of installing an ear plate in a sensor body provided by the utility model;

[0027] Figure 6 A schematic diagram of a limit turntable in a sensor body provided by the utility model;

[0028] Figure 7 This is a schematic diagram of a limit rod in a sensor body provided by the utility model.

[0029] The reference numerals are as follows:

[0030] 100, fan blade; 200, mounting base; 201, mounting threaded rod; 300, adhesive layer; 400, sensor body; 401, mounting ear plate; 402, torsion spring; 4021, first rod body; 4022, second rod body; 403, positioning column; 404, data transmission cable; 500, limit turntable; 501, limit groove; 502, angular groove; 600, limit rod; 601, limit bump; 602, hinged connecting column; 700, mounting nut. DETAILED DESCRIPTION

[0031] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0032] like Figure 1 As shown, in one embodiment of the utility model, a fan blade monitoring sensor installation structure is provided, and the installation structure is used to install the sensor body on the fan blade 100, so as to use the sensor body to collect data during the operation of the fan blade 100.

[0033] Specifically, Figure 1-Figure 3 As shown, the mounting structure includes a mounting ear plate 401, the mounting ear plate 401 and the housing of the sensor body 400 are formed in an integral structure, the mounting ear plate 401 is mounted on the mounting base 200 through a bolt connection structure, and the mounting base 200 is fixedly mounted on the fan blade 100 through an adhesive layer 300;

[0034] Among them, the specific method of installing the mounting base 200 on the wind blade 100 through the adhesive layer 300 includes: after cleaning the sensor bonding position before bonding, use an NH204 glue gun to apply NH204 structural adhesive on the contact surface between the mounting base 200 and the web / windward surface of the wind blade 100, let it bond with the web / windward surface, and press for two minutes at room temperature to ensure fixation.

[0035] Preferably, a data transmission cable 404 is connected to the sensor body 400 , and the data transmission cable 404 is used for transmitting collected data.

[0036] In addition, the sensor body 400 provided by the present invention adopts the RH125TYD acceleration sensor.

[0037] Please continue reading Figure 1-Figure 7 In the embodiment of the utility model, the mounting structure further includes a limiting mechanism, which is used to ensure that the bolt connection between the mounting ear plate 401 and the mounting base 200 does not loosen;

[0038] The bolt connection structure includes an installation threaded rod 201, which is fixedly connected to the installation base 200. The installation ear plate 401 is provided with an installation through hole that matches the installation threaded rod 201. The end of the installation threaded rod 201 passing through the installation through hole is installed with a installation nut 700 by a threaded connection. The connection and fixation between the installation ear plate 401 and the installation base 200 is achieved by tightening the installation nut 700.

[0039] Among them, the limiting mechanism includes a limiting turntable 500 which rotates unidirectionally along the tightening direction of the mounting nut 700. The limiting turntable 500 is rotatably arranged on the mounting ear plate 401. The limiting turntable 500 is coaxially arranged with the mounting through hole. An angular groove 502 is arranged on the limiting turntable 500 along the central axis of the limiting turntable 500. The angular groove 502 matches the mounting nut 700. When the mounting nut 700 is in a tightened state, the mounting nut 700 is against the angular groove 502. At this time, when the mounting nut 700 rotates, it will drive the limiting turntable 500 to rotate synchronously.

[0040] Furthermore, the outer ring of the limit turntable 500 is processed with multiple limit grooves 501 at equal intervals, and the limit mechanism also includes a limit rod 600, one end of which is rotatably connected to a hinged connection column 602, and the hinged connection column 602 is fixedly installed on the mounting ear plate 401 so that the limit rod 600 can rotate around the hinged connection column 602; the other end of the limit rod 600 is integrally formed with a limit protrusion 601 matching the limit groove 501.

[0041] Furthermore, the limiting mechanism further includes a torsion spring 402 and a positioning column 403, the positioning column 403 is fixedly connected to the mounting ear plate 401, and the torsion spring 402 is further provided with a first rod body 4021 and a second rod body 4022, the first rod body 4021 abuts against the positioning column 403, and the second rod body 4022 abuts against the limiting rod 600, and the limiting protrusion 601 abuts against the limiting groove 501 by the torsion spring 402, so that the limiting turntable 500 can only rotate in one direction, and the direction of the one-way rotation is consistent with the tightening direction of the mounting nut 700;

[0042] Since the second rod body 4022 is pressed on the limiting rod 600, the limiting protrusion 601 is pressed against the limiting groove 501, so that the limiting turntable 500 can only rotate in one direction, that is, the limiting mechanism does not affect the tightening process of the mounting nut 700, and when the threaded connection mode is loose, the mounting nut 700 needs to be rotated in the reverse direction. Obviously, since the limiting mechanism is set, the mounting nut 700 cannot rotate in the reverse direction, which ensures the stability and reliability of the bolt connection mode between the mounting ear plate 401 and the mounting base 200.

[0043] Based on the above solution, it can be seen that the utility model can solve the problem in the prior art that the connection between the sensor and the sensor base is easily loosened due to the vibration generated by the fan blades during operation.

[0044] Accordingly, when the sensor body 400 needs to be removed from the fan blade 100, the end of the limiting rod 600 is manually lifted so that the limiting protrusion 601 is removed from the limiting groove 501. At this time, the limiting turntable 500 can rotate in the reverse direction, so that the mounting nut 600 can rotate in the reverse direction to loosen it.

[0045] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A fan blade monitoring sensor installation structure, characterized in that: include: A mounting ear plate (401), wherein the mounting ear plate (401) and the housing of the sensor body (400) are formed in an integrally formed structure, the mounting ear plate (401) is mounted on the mounting base (200) via a bolt connection structure, and the mounting base (200) is fixedly mounted on the fan blade (100) via an adhesive layer (300); the bolt connection structure comprises a mounting threaded rod (201), the mounting threaded rod (201) is fixedly connected to the mounting base (200), a mounting through hole matching the mounting threaded rod (201) is provided on the mounting ear plate (401), a mounting nut (700) is installed at the end of the mounting threaded rod (201) passing through the mounting through hole via a threaded connection, and the mounting ear plate (401) and the mounting base (200) are connected and fixed by tightening the mounting nut (700); The limiting mechanism comprises a limiting turntable (500) which rotates unidirectionally along the tightening direction of the mounting nut (700), the limiting turntable (500) being rotatably arranged on the mounting ear plate (401), and the limiting turntable (500) being coaxially arranged with the mounting through hole.

2. The fan blade monitoring sensor installation structure according to claim 1 is characterized in that: An angular groove (502) is provided on the limiting rotating disk (500) along the central axis of the limiting rotating disk (500), the angular groove (502) matches the mounting nut (700), and when the mounting nut (700) is in a tightened state, the mounting nut (700) abuts against the angular groove (502).

3. The fan blade monitoring sensor installation structure according to claim 2 is characterized in that: The outer ring of the limiting rotating disk (500) is processed with a plurality of limiting grooves (501) at equal intervals; The limiting mechanism also includes a limiting rod (600), one end of which is rotatably connected to a hinged connection column (602), the hinged connection column (602) is fixedly mounted on the mounting ear plate (401), and the other end of the limiting rod (600) is integrally formed with a limiting protrusion (601) that matches the limiting groove (501).

4. The fan blade monitoring sensor installation structure according to claim 3 is characterized in that: The limiting mechanism further comprises a torsion spring (402) and a positioning column (403), wherein the positioning column (403) is fixedly connected to the mounting ear plate (401); The torsion spring (402) is also provided with a first rod body (4021) and a second rod body (4022), wherein the first rod body (4021) abuts against the positioning column (403), and the second rod body (4022) abuts against the limiting rod (600).

5. The fan blade monitoring sensor installation structure according to any one of claims 2 to 4, characterized in that: The sensor body (400) is connected to a data transmission cable (404).

6. The fan blade monitoring sensor installation structure according to claim 5, characterized in that: The sensor body (400) adopts an RH125TYD acceleration sensor.

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