Wind generating set audio monitoring device and wind generating set

Abstract

The utility model provides a wind generating set audio monitoring device and a wind generating set, the device comprises a first support, a second support and a sound pick-up, the first support is installed on a wind measuring support at the top of a high tower set; the second support is rotatably connected with the first support, the second support is arranged on one side of the first support, and a pickup is arranged above the end part of the second support in the direction of the side. According to the utility model, the bracket is fixedly arranged on the wind measurement bracket, so that the sound pickup is arranged at the top of a cabin and is closer to a blade, and the device can yaw along with the cabin in the operation process of the fan and can clearly receive the wind sweeping sound of the blade of the fan in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of audio monitoring, and in particular relates to an audio monitoring device for a wind generator set and a wind generator set. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The larger the blade size, the larger the wind swept area, and the capacity of a single unit will also increase significantly, which will help to further reduce the cost per kilowatt-hour. However, the coupling of structural nonlinearity of large blades with bending-torsion coupling effects, blade vortex-induced vibration, breathing effect, and the complex multi-body power system of the high and flexible tower, coupled with greater manufacturing difficulty, and the difficulty in avoiding damage to transportation, lifting, and even storage brackets, has led to unprecedented structural damage, cracking and other failure problems in the early stages of wind farm operation, and even blade breakage, further causing major economic and safety accidents such as wind turbine tower collapse, making early identification and early warning of blade damage particularly important.

[0004] Wind turbine blade audio monitoring is a method that uses audio recognition technology to analyze the sound signals generated by wind turbine blades to evaluate the performance and operating status of the blades.

[0005] This technology collects the sound generated by the blades of wind turbines and processes and analyzes the sound signals with the help of audio recognition algorithms. Audio is used to identify and distinguish the characteristics of objects through the inherent characteristics in the sound signals. In blade audio monitoring, by extracting and matching the characteristics of the blade sound signals, it can be determined whether there are abnormal conditions in the blades, such as structural damage, fatigue cracks, cracks, etc.

[0006] Most of the existing blade audio monitoring technologies are installed on the tower wall above the tower door at the bottom of the wind turbine, in the main wind direction. However, this installation method cannot pick up effective sound when the impeller is not directly above the microphone. Moreover, for high-tower units, the distance between the tower bottom microphone and the blade is also far. Summary of the invention

[0007] In order to solve the above problems, the utility model proposes an audio monitoring device for a wind turbine generator set and a wind turbine generator set. The device is fixedly installed on a wind measuring bracket through a bracket, so that the microphone is installed on the top of the cabin, close to the blades, and ensures that the device can yaw with the cabin during the operation of the wind turbine, and can receive the sound of the wind swept by the wind turbine blades in real time and clearly.

[0008] According to some embodiments, the utility model adopts the following technical solutions:

[0009] An audio monitoring device for a wind turbine generator set comprises a first bracket, a second bracket and a pickup, wherein the first bracket is mounted on a wind measuring bracket on the top of a high tower unit;

[0010] The second bracket is rotatably connected to the first bracket. The second bracket is arranged on one side of the first bracket and is located above the end portion in the side direction. The second bracket is provided with a pickup.

[0011] In the above scheme, by installing the first bracket on the wind measuring bracket, the microphone can be located on the top of the cabin of the high-tower unit, close to the blades, and can yaw with the cabin, so the collected sound is clearer and more accurate. At the same time, the second bracket and the first bracket are rotatably connected to ensure that the monitoring device can be switched between the online monitoring state and the maintenance state.

[0012] As an optional implementation, a connecting bolt is provided between the first bracket and the second bracket, and the first bracket and the second bracket are connected together by the connecting bolt.

[0013] As a further embodiment, the first bracket and the second bracket both have corresponding bolt holes at the locations where the connecting bolts are arranged.

[0014] As an optional implementation, the first bracket and the second bracket are both provided with a plurality of bolt holes, and when the first bracket and the second bracket are arranged in parallel, positions of the bolt holes correspond to each other.

[0015] As a further implementation manner, a connecting bolt is installed in each bolt hole, and the first bracket and the second bracket are fixedly connected by the multiple connecting bolts.

[0016] As an optional implementation, the second bracket is arranged above the first bracket.

[0017] As an optional implementation, a lightning rod is provided above the second bracket, next to the microphone.

[0018] As an optional implementation, the first bracket and the wind measurement bracket are connected by bolts.

[0019] As an optional implementation, the first bracket and the wind measurement bracket are fixedly connected via a plurality of hoops.

[0020] A wind turbine generator set comprises the above-mentioned wind turbine generator set audio monitoring device on the top of the nacelle of the set.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model realizes the long-distance extended installation of the microphone by means of two brackets, and the double bracket method can realize the convenience of retracting and maintaining the external extended cross beam by removing some bolts.

[0023] The utility model can reduce the distance between the microphone and the blade tip through the outrigger solution, increase the intensity of picking up the blade sound, and the outrigger solution makes the microphone away from the cabin, so as to reduce the influence of the operating noise of the equipment inside the cabin as much as possible.

[0024] The utility model provides a lightning rod beside the microphone, which can be connected to the lightning protection system of the wind turbine to protect the microphone from lightning strikes.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0027] Figure 1 is a schematic structural diagram of an audio monitoring device for a wind turbine generator set according to an embodiment;

[0028] Figure 2 is a schematic diagram of an online monitoring state of an audio monitoring device for a wind turbine generator set according to an embodiment;

[0029] Figure 3 is a schematic diagram of the maintenance status of an audio monitoring device for a wind turbine generator set according to an embodiment;

[0030] Figure 4 This is a connection system diagram for the pickup;

[0031] Among them, 1. the first bracket, 2. the second bracket, 3. the pickup, 4. the lightning rod device, 5. the wind measurement bracket, 6. the connecting bolt, 7. the bolt hole. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0033] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] In the absence of conflict, the embodiments in this application and the features in the embodiments may be combined with each other.

[0036] Embodiment 1

[0037] like Figure 1 As shown, an audio monitoring device for a wind turbine generator set includes a first bracket 1, a second bracket 2, a lightning rod device 4 and a pickup 3. The first bracket 1 is fixedly connected to the crossbeam of the wind measuring bracket 5 as a connecting support point between the device and the wind turbine. If there is a fixed bolt interface on the unit, it can be directly fixed with bolts.

[0038] In some embodiments, if there is no bolt interface on the unit, a clamp can also be used to fix the wind measurement bracket 5 and the first bracket 1.

[0039] like Figure 2 and Figure 3 As shown, the second bracket 2 is connected and fixed to the first bracket 1 by four connecting bolts 6, and the second bracket 2 is located above the first bracket 1. When the second bracket 2 is in the online monitoring state, the second bracket 2 and the first bracket 1 are fixed on the same straight line. When the pickup on the second bracket 2 needs to be maintained, the three connecting bolts 6 between the first bracket 1 and the second bracket 2 close to the outside are removed. After removal, the second bracket 2 is still connected to the first bracket 1 by another connecting bolt 6, and the second bracket 2 can be rotated 90 degrees back to the top position of the cabin for maintenance, which is convenient for maintenance.

[0040] Bolt holes 7 are provided at corresponding positions of the second bracket 2 and the first bracket 1 .

[0041] exist Figure 2 and Figure 3 In the figure, the wind measuring bracket 5 is not shown.

[0042] Of course, in some embodiments, the rotatable part of the second bracket 2 and the first bracket 1, that is, the connection point of the first bolt, is not located at the ends of the second bracket 2 and the first bracket 1, but has a certain margin, so that the second bracket 2 and the first bracket 1 can still be firmly connected when they are vertical.

[0043] The second bracket 2 is equipped with a microphone 3 and a lightning rod device 4. Since the two brackets are exposed at high altitude, they are easily affected by lightning. The bottom of the lightning rod device 4 is connected to the wind turbine lightning protection down conductor to prevent the sensor equipment from being struck by lightning. The microphone is installed at the outer end of the second bracket 2 to collect the sound of the wind when the blades pass by.

[0044] In this embodiment, both the microphone 3 and the lightning rod device 4 can be existing devices.

[0045] This embodiment can reduce the distance between the microphone and the blade tip through the outrigger solution, increase the intensity of picking up the blade sound. In addition, the outrigger solution keeps the microphone away from the cabin, so as to minimize the impact of the operating noise of the equipment inside the cabin.

[0046] In this embodiment, the connection between the microphone 3 and the audio collection unit can also be selected from existing technologies, such as Figure 4 As shown, the audio collection unit located inside the nacelle is connected to the microphone 3 to complete the collection of the blade sweeping sound, which is uploaded to the wind farm host computer system through the ring network by the standard protocol. The lightning rod device is connected to the lightning protection down conductor to protect the microphone from lightning strikes.

[0047] It should be noted that the above drawings are only for structural description, and their proportions and sizes are not necessarily the same as the actual objects. It is understandable that the proportions and sizes between the drawings are slightly different.

[0048] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the utility model without creative labor shall be included in the protection scope of the utility model.

Claims

1. A wind turbine generator audio monitoring device, characterized in that: It includes a first bracket, a second bracket and a pickup, wherein the first bracket is installed on a wind measuring bracket on the top of a high tower unit; The second bracket is rotatably connected to the first bracket. The second bracket is arranged on one side of the first bracket and is located above the end portion in the side direction. The second bracket is provided with a pickup.

2. The audio monitoring device for a wind turbine generator set according to claim 1, characterized in that: A connecting bolt is provided between the first bracket and the second bracket, and the first bracket and the second bracket are connected together through the connecting bolt.

3. The audio monitoring device for a wind turbine generator set as claimed in claim 2, characterized in that: The first bracket and the second bracket both have corresponding bolt holes at the locations where the connecting bolts are arranged.

4. The audio monitoring device for a wind turbine generator set according to claim 1, characterized in that: The first bracket and the second bracket are both provided with a plurality of bolt holes, and when the first bracket and the second bracket are arranged in parallel, positions of the bolt holes correspond to each other.

5. The audio monitoring device for a wind turbine generator set as claimed in claim 4, characterized in that: A connecting bolt is installed in each bolt hole, and the first bracket and the second bracket are fixedly connected through the multiple connecting bolts.

6. The audio monitoring device for a wind turbine generator set according to claim 1, characterized in that: The second bracket is arranged above the first bracket.

7. The audio monitoring device for a wind turbine generator set according to claim 1, characterized in that: A lightning rod is arranged above the second bracket and beside the microphone.

8. The audio monitoring device for a wind turbine generator set according to claim 1, characterized in that: The first bracket and the wind measurement bracket are connected by bolts.

9. The audio monitoring device for a wind turbine generator set according to claim 1, characterized in that: The first bracket and the wind measuring bracket are fixedly connected via a plurality of hoops.

10. A wind turbine generator set, characterized in that: On the top of the nacelle of the unit, there is included the audio monitoring device for the wind turbine generator set according to any one of claims 1-9.

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