Zero setting device of ultrasonic anemoscope of direct-driven wind generating set

Abstract

The utility model relates to the technical field of anemoscope installation of a wind generating set, in particular to a zero setting device of an ultrasonic anemoscope of a direct-driven wind generating set, which comprises an anemoscope main body clamping device and an anemoscope laser pen rotating device, comprising an anemoscope main body clamping device and an anemoscope laser pen rotating device, the anemoscope body clamping device comprises a base body, and a first V-shaped notch is formed in one end of the base body and used for clamping an anemoscope body. Screw rods are arranged on the two sides of the first V-shaped notch, and one ends of the two screw rods are perpendicularly installed at the front end of the base body. A positioning pressing plate is arranged at the front end of the base body, and the other ends of the two screws penetrate through the positioning pressing plate and are connected with the positioning pressing plate through matched nuts. The zero setting device is suitable for zero setting of the ultrasonic anemoscope, a fan can be quickly and accurately aligned to the wind coming direction, the deviation value of a unit and the actual wind direction can be reduced, and the phenomenon of load unbalance of an impeller and the unit is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of wind vane installation of a wind turbine generator set, in particular to a zeroing device for an ultrasonic wind vane of a direct-drive wind turbine generator set. Background Art

[0002] With the rapid development of wind turbines, wind turbines are becoming larger and more intelligent, and the power generation indicators and power curves of wind turbines are receiving more and more attention.

[0003] At present, the installation and maintenance process of ultrasonic wind vanes for wind turbines adopts visual zeroing and mechanical wind vane zeroing. However, there are the following problems: First, the visual error in manual installation is too large. Engineers install the zero point of the ultrasonic wind vane parallel to the center of the nacelle based on experience, which will lead to an inappropriate limit position of the ultrasonic wind vane, causing an angle between the ultrasonic wind vane reference point and the nacelle centerline. The greater the angle between the ultrasonic wind vane reference point and the nacelle centerline, the greater the impact on the power generation and power curve of the wind turbine. In severe cases, it will cause unbalanced impeller load and increased nacelle system load, resulting in excessive wind turbine wind error deviation; second, mechanical wind vane zeroing is not suitable for ultrasonic wind vane zeroing. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a zeroing device for an ultrasonic wind vane of a direct-drive wind turbine generator set.

[0005] The utility model provides a zeroing device for an ultrasonic wind vane of a direct-drive wind turbine generator set, comprising a wind vane main body clamping device and a wind vane laser pen rotating device;

[0006] The anemometer main body clamping device includes a base, one end of which is provided with a first V-shaped notch for clamping the anemometer main body; screws are provided on both sides of the first V-shaped notch, and one end of the two screws is vertically mounted on the front end of the base;

[0007] A positioning pressure plate is provided at the front end of the base, and the other ends of the two screws pass through the positioning pressure plate and are connected to the positioning pressure plate through matching nuts; the positioning pressure plate, the screws on both sides of the first V-shaped notch, and the base are combined to form an accommodating space for the wind vane body, and the positioning pressure plate is tightened by the nuts assembled on the screws to press the wind vane body, so that the base is clamped and fixed on the wind vane body;

[0008] An opening is provided in the middle of the positioning plate, which is used to accurately align with the zero point of the wind vane base through the opening, position the zero device and fix it on the wind vane. The zero point is on the wind vane base and passes through the center line of the wind vane. Only when the zero point is aligned with the front of the cabin can the unit be accurately aligned with the incoming wind direction.

[0009] The wind vane laser pointer rotating device is detachably mounted on one side of the base of the wind vane main body clamping device through a connecting piece, and is used to accurately position the wind vane laser pointer to ensure that the laser pointer can accurately hit the light beam on the specified straight line according to the measured relevant data;

[0010] Furthermore, the connecting piece includes matching bolts and butterfly nuts;

[0011] Furthermore, the wind vane laser pointer rotating device includes a fixing seat and a mounting ring. The top of the fixing seat is provided with a second V-shaped notch for placing the laser pointer. A limiting groove for accommodating the mounting ring is formed in the second V-shaped notch. The bottom of the mounting ring is connected to a threaded rod. The mounting ring is placed in the limiting groove, and the threaded rod passes downward through the fixing seat and is fixed to the fixing seat by a butterfly nut matched therewith, so as to allow the laser pointer to pass through and realize precise positioning of the laser pointer.

[0012] Furthermore, the middle portion of the screw has no threads and is used to clamp the wind vane body at the first V-shaped notch of the base;

[0013] Further, the nut is a butterfly nut;

[0014] Furthermore, the opening is a cross-shaped opening;

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The zeroing device of the present invention is suitable for zeroing an ultrasonic wind vane, which can improve the speed and accuracy of the wind vane zero calibration, so that the unit can quickly and accurately align the fan with the incoming wind direction, reduce the deviation between the unit and the actual wind direction, and eliminate the load imbalance between the impeller and the unit. Compared with the traditional manual zeroing method, it does not require adjustment of the main control program during the wind vane zeroing process, reducing the risk of inaccurate wind caused by the manual zeroing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0018] Figure 1 : A schematic structural diagram of the zeroing device of the ultrasonic wind vane of a direct-drive wind turbine generator set according to the present invention;

[0019] Figure 2 : Schematic diagram of the structure of the wind vane with a zero point of the utility model;

[0020] Figure 3 : Schematic diagram of measuring the center line of the cabin top according to the utility model;

[0021] In the figure: 1-wind vane body, 2-laser pen, 11-base, 12-positioning pressure plate, 13-screw, 14-nut, 15-first V-shaped notch, 31-fixing seat, 32-threaded rod, 33-mounting ring, 34-second V-shaped notch, 35-limiting groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution, design method and advantages of the present invention more clear, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

[0023] like Figure 1-Figure 3 As shown, the utility model provides a zeroing device for an ultrasonic anemometer of a direct-drive wind turbine generator set, comprising a clamping device for a wind vane body 1 and a wind vane laser pen rotating device; the clamping device for the wind vane body 1 comprises a base 11, a positioning pressure plate 12 and a matching screw 13 and a nut 14, the nut 14 being a butterfly nut, a first V-shaped notch 15 being provided at the front end of the base 11 for clamping the wind vane body 1 (i.e., the middle cylindrical portion of the wind vane), screws 13 being provided on both sides of the first V-shaped notch 15, the two screws 13 being symmetrically arranged, and one end of the two screws 13 being vertically mounted at the front end of the base 11 The other ends of the two screw rods 13 are mounted on the positioning pressure plate 12, and the positioning pressure plate 12 can move along the screw rod. The base 11, the positioning pressure plate 12, and the two screw rods 13 can be combined together to form an accommodating space for accommodating the wind vane body 1, and the positioning pressure plate 12 is pressed against the wind vane body 1 by tightening the nut 14 assembled on the screw rod 13, so that the base 11 can be clamped and fixed on the wind vane body 1. In addition, the middle part of the screw rod 13 has no thread, so that the wind vane body 1 can be quickly stuck in the first V-shaped notch 15 of the base 11, thereby avoiding redundant work caused by excessively long threads during installation at high altitudes;

[0024] It should be noted that the zeroing device, the wind vane body 1 clamping device, and the wind vane laser pen rotating device, are configured such that a cross-shaped opening is provided on the pressure plate in the wind vane body 1 clamping device to coincide with the zero point, and the zero point is on the wind vane base and passes through the center line of the wind vane; only when the zero point is aligned directly in front of the cabin can the unit be accurately aligned with the incoming wind direction; the zeroing device, through the wind vane laser pen rotating device, has a base 11 on one side of the wind vane body 1 clamping device that is detachably mounted on the side of the base 11 by matching bolts and butterfly nuts, respectively, for accurately positioning the wind vane laser pen to ensure that the laser pen can accurately direct the light beam on a specified straight line based on the measured relevant data;

[0025] Therefore, the speed and accuracy of the wind vane zero calibration can be improved, and the fan can be quickly and accurately aligned with the incoming wind direction. Compared with the traditional manual zeroing method, it does not require adjustment of the main control program during the wind vane zeroing process, reducing the risk of inaccurate wind alignment caused by the manual zeroing method; at the same time, it can reduce the deviation between the unit and the actual wind direction, further enable the unit to be accurately aligned with the incoming wind direction, eliminate the load imbalance between the impeller and the unit, and achieve the purpose of extending the service life of the unit.

[0026] The wind vane laser pointer rotating device has a matching bolt and butterfly nut that are detachably mounted on one side of the base 11 of the clamping device of the wind vane body 1, and is used to accurately position the wind vane laser pointer to ensure that the laser pointer can accurately hit the light beam on the specified straight line according to the measured relevant data;

[0027] The wind vane laser pointer rotating device includes a fixing base 31 and a mounting ring 33 with a threaded rod 32. The top of the fixing base 31 is provided with a second V-shaped notch 34 for placing the laser pointer 2. At the same time, a limiting groove 35 for accommodating the mounting ring 33 is formed in the second V-shaped notch 34. The bottom of the mounting ring 33 is connected to the threaded rod 32. The mounting ring 33 is placed in the above-mentioned limiting groove, and the threaded rod 32 at the bottom passes downward through the fixing base 31. Then, the butterfly nut matching the threaded rod 32 is tightened to fix the mounting ring 33 on the fixing base 31 for the laser pointer 2 to pass through, thereby achieving precise positioning of the laser pointer 2.

[0028] The zeroing process of the zeroing device is as follows: (1) Determine the offset of the laser pen 2 relative to the center line of the cabin: Determine it according to different meteorological station brackets, measure the distance between the center position of the installed wind vane and the center point of the wind measuring bracket (cabin center line), this distance is X, the distance from the laser pen 2 to the center of the wind vane is 55mm (derived from the tooling design), and the Y value is the offset distance between the vertical projection of the laser pen 2 and the center point of the bracket (cabin center line) is equal to X+55mm.

[0029] (2) First find the center point: near the skylight (the distance from the wind measuring bracket has little effect on the accuracy, it is better to take the embedded parts near the skylight as horizontal) and use a tape measure to measure the distance between the edges of the embedded handrail plates on both sides of the cabin top. Figure 3 Take half of the distance L as the center point and mark it with a marker. (If the cabin is built to standard, the center point should coincide with the center of the cabin. This is because the cabin docking line is sealed with sealant and waterproof tape. If there is any offset, finding the center line directly from above will not be very accurate.) Measure the horizontal offset distance X mm from the center point toward the wind vane. At this point, use the found cabin center line as the standard, and make a clear vertical mark with the offset distance Y. This mark is the found zero point.

[0030] (3) Fix the zeroing device on the wind vane: the cross of the pressure plate positioning coincides with the zero point. Turn on the laser pen 2 switch, rotate the fixing base 31 where the laser pen 2 is located from near to far so that the point hits the center point on it and the vicinity of the straight line where the zero point is located, then loosen the fixing base of the ultrasonic wind vane, rotate the wind vane so that the projection point of the laser pen 2 coincides with the drawn straight line (vertical mark line), and the drawn straight line is the designated straight line. Then fix the base and continue to rotate the laser pen 2 to keep the projection point of the laser pen 2 always on the straight line. At this time, continue to rotate the laser pen base. The trajectory of the laser pen projection point should coincide with the drawn straight line (vertical mark line), indicating that the zeroing is completed.

[0031] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A zeroing device for an ultrasonic wind vane of a direct-drive wind turbine generator set, characterized in that: It includes a wind vane main body clamping device and a wind vane laser pointer rotating device; The anemometer main body clamping device includes a base, one end of which is provided with a first V-shaped notch for clamping the anemometer main body; screws are provided on both sides of the first V-shaped notch, and one end of the two screws is vertically mounted on the front end of the base; A positioning pressure plate is provided at the front end of the base, and the other ends of the two screws pass through the positioning pressure plate and are connected to the positioning pressure plate through matching nuts; the positioning pressure plate, the screws on both sides of the first V-shaped notch, and the base are combined to form an accommodating space for the wind vane body, and the positioning pressure plate is tightened by the nuts assembled on the screws to press the wind vane body, so that the base is clamped and fixed on the wind vane body; An opening is provided in the middle of the positioning plate, which is used to accurately align with the zero point of the wind vane base through the opening, position the zero device and fix it on the wind vane, and the zero point is on the wind vane base and passes through the center line of the wind vane; Only when the zero point is aligned with the front of the cabin can the unit be accurately aligned with the incoming wind direction; The wind vane laser pen rotating device is detachably mounted on one side of the base of the wind vane main body clamping device through a connecting piece, and is used to accurately position the wind vane laser pen to ensure that the laser pen can accurately hit the light beam on the specified straight line according to the measured relevant data.

2. The zeroing device of the ultrasonic wind vane of a direct-drive wind turbine generator set according to claim 1, characterized in that: The connecting piece includes a matching bolt and a butterfly nut.

3. The zeroing device of the ultrasonic wind vane of a direct-drive wind turbine generator set according to claim 1, characterized in that: The wind vane laser pen rotating device includes a fixing seat and a mounting ring. A second V-shaped notch is formed on the top of the fixing seat for placing the laser pen. A limiting groove is formed in the second V-shaped notch for accommodating the mounting ring. A threaded rod is connected to the bottom of the mounting ring. The mounting ring is placed in the above-mentioned limiting groove, and the threaded rod passes downward through the fixing seat and fixes the mounting ring on the fixing seat through a butterfly nut matched therewith, so as to allow the laser pen to pass through and realize precise positioning of the laser pen.

4. The zeroing device of the ultrasonic wind vane of a direct-drive wind turbine generator set according to claim 1, characterized in that: The middle portion of the screw rod has no threads and is used to clamp the wind vane body at the first V-shaped notch of the base body.

5. The zeroing device of the ultrasonic wind vane of a direct-drive wind turbine generator set according to claim 1, characterized in that: The nut is a butterfly nut.

6. The zeroing device of the ultrasonic wind vane of a direct-drive wind turbine generator set according to claim 1, characterized in that: The opening is a cross-shaped opening.

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