Lightning protection and wind measurement device for offshore wind turbine generator

Abstract

The utility model provides an offshore wind turbine generator lightning protection wind measuring device which comprises a wind indicator, an anemograph, an ultrasonic wind measuring sensor and at least two sets of supporting frames, the supporting frames are used for being connected with a connecting body on a cabin cover, the supporting frames are connected through a connecting frame, one set of supporting frame is provided with the wind indicator, and the other set of supporting frame is provided with the ultrasonic wind measuring sensor. One group of supporting frames is provided with an ultrasonic wind measuring sensor, the upper end of each supporting frame is provided with a lightning rod, the lightning rods are arranged in an inclined mode, and the highest point of each lightning rod is higher than the highest point of the corresponding wind indicator or anemograph. The device is used for wind measurement of an offshore wind turbine generator, and effectively enlarges the protection range of the lightning rod.

Description

Technical Field

[0001] The utility model relates to the field of offshore wind power wind measuring equipment, in particular to a lightning protection wind measuring device for an offshore wind power unit. Background Art

[0002] At present, when offshore wind turbines are in a thunderstorm season, they are very susceptible to lightning strikes, causing problems in the wind sensor circuit. Usually, a lightning rod is installed directly above the wind sensor-related equipment to protect the wind sensor from lightning, but the disadvantages of this method are also obvious: First, due to the use of a lightning rod design directly above the wind sensor, there is a certain probability that the lightning current will cause "accidental damage" to the wind sensor during the process of the lightning rod introducing the lightning current into the grounding point of the cabin platform. In actual applications, this phenomenon does exist, causing damage to the wind sensor; second, the lightning rod is perpendicular to the cabin surface with the wind sensor, and the protection range of the lightning rod is limited, and it can only protect part of the vertical direction. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an offshore wind turbine lightning protection and wind measuring device, which is used for offshore wind turbine wind measurement and effectively increases the protection range of the lightning rod.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a lightning protection and wind measuring device for an offshore wind turbine, including a wind vane, an anemometer and an ultrasonic wind measuring sensor, including at least two groups of support frames, the support frames are used to connect with a connector on a nacelle cover, and the support frames are connected through connecting frames, one group of the support frames is provided with a wind vane, and the other group of the support frames is provided with an anemometer, one group of the support frames is provided with an ultrasonic wind measuring sensor, and a lightning rod is provided at the upper end of the support frame, the lightning rod is inclined, and the highest point of the lightning rod is higher than the highest point of the corresponding wind vane or anemometer.

[0005] In a preferred solution, the included angle between the lightning rod and the support frame in the vertical direction is 45°.

[0006] In a preferred solution, the vertical straight-line distance between the highest point of the lightning rod and the highest point of the corresponding wind vane or anemometer is greater than 400 mm.

[0007] In a preferred solution, the support frame includes a support rod, a support diagonal rod is provided at the lower part of the support rod, and a connecting seat is provided at the lower end of the support rod and the support diagonal rod.

[0008] In a preferred solution, a transverse support rod is provided on one side of the support rod, and a mounting plate is provided at the end of the transverse support rod, and an aviation warning light is provided on the mounting plate.

[0009] The utility model provides a lightning protection and wind measuring device for offshore wind turbines, which has the following beneficial effects:

[0010] 1. The lightning rod is set at an angle, and its height is higher than that of related wind measuring mechanisms, such as wind vanes and anemometers. The vertical lightning rod design can effectively expand the lightning protection area and improve the lightning protection for wind measuring sensors.

[0011] 2. It can be achieved that the lightning current does not pass through the relevant wind measuring mechanism. By adopting an independent lightning protection circuit, damage to the wind measuring sensor can be avoided, thereby improving the protection effect of the wind measuring sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the lightning protection circuit structure of the utility model;

[0015] In the figure: wind vane 1, anemometer 2, ultrasonic wind sensor 3, support frame 4, lightning rod 5, aviation warning light 6, connector 7, cable 8, switch cabinet 9, connecting frame 10, support rod 401, supporting diagonal rod 402, connecting seat 403, transverse support rod 404, and mounting plate 405. DETAILED DESCRIPTION

[0016] like Figure 1 As shown, a lightning protection wind measuring device for an offshore wind turbine includes a wind vane 1, an anemometer 2 and an ultrasonic wind measuring sensor 3. The ultrasonic wind measuring sensor 3 can be a YQ5505 ultrasonic wind speed and direction transmitter of the Yiqin brand.

[0017] It includes at least two groups of support frames 4, which are used to connect with the connector 7 on the nacelle cover, and the support frames 4 are connected through the connecting frame 10. One group of support frames 4 is provided with a wind vane 1, and the other group of support frames 4 is provided with an anemometer 2. One group of support frames 4 is provided with an ultrasonic wind sensor 3. The upper end of the support frame 4 is provided with a lightning rod 5, which is tilted, and the highest point of the lightning rod 5 is higher than the highest point of the corresponding wind vane 1 or anemometer 2. Specifically, the vertical angle between the lightning rod 5 and the support frame 4 is 45°. If deformation occurs, the angle needs to be adjusted in time, and if broken, it should be replaced in time.

[0018] The relevant wind measuring mechanism is within the effective protection coverage of the lightning rod 5 to avoid damage to the anemometer and wind vane caused by induced lightning and static electricity. The connection between the lightning rod 5 and the support frame 4 should adopt a welding process to ensure good conduction between the support frame 4 and the lightning rod 5, and ensure that the contact surface between the lightning rod 5 and the support frame 4 is in good contact, and do not use insulating coating spraying.

[0019] Preferably, the vertical straight-line distance between the highest point of the lightning rod 5 and the highest point of the corresponding wind vane 1 or anemometer 2 is greater than 400 mm, so as to avoid "accidental injury" to the wind measuring sensor caused by the lightning current introduced by the lightning rod 5 into the grounding point of the cabin platform.

[0020] In this embodiment, the support frame 4 includes a support rod 401, a support diagonal rod 402 is provided at the lower part of the support rod 401, and a connecting seat 403 is provided at the lower end of the support rod 401 and the support diagonal rod 402. By providing the support diagonal rod 402, the support stability of the support frame 4 is improved.

[0021] A transverse support rod 404 is provided on one side of the support rod 401, and a mounting plate 405 is provided at the end of the transverse support rod 404. An aviation warning light 6 is provided on the mounting plate 405. The aviation warning light 6 can serve as a warning and mark the position of the offshore wind turbine.

[0022] When in use, the support frame 4 is connected to the connector on the nacelle cover, the lower end of the support frame 4 extends into the nacelle cover, the support frame 4 is connected to the connector 7 on the nacelle cover by welding, and the connection seat 403 is provided to achieve surface-to-surface contact connection and conduction, and the connector on the nacelle cover is connected to the grounding bar of the switch cabinet 9 in the nacelle through the cable 8. When a lightning current occurs, the lightning rod 5 introduces the lightning current into the switch cabinet in the nacelle cover and grounds it, so that the lightning current does not pass through the relevant wind measurement mechanism, thereby improving the lightning protection of the relevant wind measurement mechanism.

Claims

1. A lightning protection and wind measurement device for an offshore wind turbine, comprising a wind vane (1), an anemometer (2) and an ultrasonic wind measurement sensor (3), characterized in that: The invention comprises at least two groups of support frames (4), the support frames (4) being used to be connected to a connector (7) on a nacelle cover, the support frames (4) being connected via a connecting frame (10), one group of the support frames (4) being provided with a wind vane (1), the other group of the support frames (4) being provided with an anemometer (2), one group of the support frames (4) being provided with an ultrasonic wind sensor (3), and a lightning rod (5) being provided at the upper end of the support frame (4), the lightning rod (5) being arranged in an inclined manner, the highest point of the lightning rod (5) being higher than the highest point of the corresponding wind vane (1) or anemometer (2).

2. The lightning protection and wind measuring device for offshore wind turbines according to claim 1, characterized in that: The included angle between the lightning rod (5) and the support frame (4) in the vertical direction is 45°.

3. The lightning protection and wind measuring device for offshore wind turbines according to claim 1, characterized in that: The vertical straight-line distance between the highest point of the lightning rod (5) and the highest point of the corresponding wind vane (1) or anemometer (2) is greater than 400 mm.

4. The lightning protection and wind measuring device for offshore wind turbines according to claim 1, characterized in that: The support frame (4) comprises a support rod (401), a support oblique rod (402) is provided at the lower part of the support rod (401), and a connecting seat (403) is provided at the lower ends of the support rod (401) and the support oblique rod (402).

5. The lightning protection and wind measuring device for offshore wind turbines according to claim 4, characterized in that: A transverse support rod (404) is provided on one side of the support rod (401), a mounting plate (405) is provided at the end of the transverse support rod (404), and an aviation warning light (6) is provided on the mounting plate (405).

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