Dry-type transformer fixing structure for wind driven generator

Abstract

The utility model relates to a dry-type transformer fixing structure for a wind driven generator, which comprises a transformer body, a cabin body and elastic pull rods, the transformer body is arranged in the cabin body, two sides of the upper end of the transformer body are respectively connected with the inner wall of the upper end of the cabin body through the elastic pull rods, and the upper end of the transformer body is connected with the cabin body through the elastic pull rods. And the elastic pull rod is provided with an elastic connecting section and an upper pull rod with adjustable length. The upper end of the transformer body is connected with the upper end of the cabin body through the elastic pull rod, so that the influence of vibration of the cabin body on the transformer body can be reduced, the use requirement of the transformer in a long-term vibration environment is met, and meanwhile, the transformer is convenient to install and adjust.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a dry-type transformer fixing structure for a wind generator. Background Art

[0002] Dry-type transformers used in wind turbines are usually installed in a cabin, which is usually tens of meters to more than a hundred meters above the ground. When the wind turbine is working, the cabin as a whole will vibrate during the accelerated rotation of the blades. Therefore, the dry-type transformer built into the cabin will also be in a vibrating environment for a long time, which will affect the installation firmness of the transformer and the service life of the equipment. However, the wind turbine transformer fixing method in the prior art does not take into account the vibration effect of the cabin body.

[0003] For example, a Chinese utility model patent with the authorization announcement number CN207441408U discloses a transformer fixing structure for a wind turbine, in which a support base is provided in the fixing structure body, a telescopic platform is provided on the top of the support base, an ultrasonic transmitter is provided on the top of the telescopic platform, and a transformer is provided on the top of the ultrasonic transmitter. However, the structure still adopts the traditional transformer bottom fixing method, and the improvement of the fixing structure is to use an ultrasonic transmitter to prevent birds from staying on the transformer and affecting the use of the transformer.

[0004] Another example is a Chinese utility model patent with authorization announcement number CN215868882U, which discloses a box-type transformer fixing structure for a wind turbine, which is provided with a fixed base, a first adjustment block, a second adjustment block and a gear assembly. By adjusting the lifting assembly to make the second adjustment block separate from the first adjustment block, the fixed base can be changed in the horizontal plane, thereby achieving the effect of adjusting the box-type transformer to be horizontal. However, this structure also does not consider the impact of long-term vibration environment on the transformer.

[0005] Another example is a Chinese utility model patent with authorization announcement number CN206246293U, which discloses a wind turbine with a transformer flexibly suspended on the top of the tower. The nacelle is no longer equipped with a transformer, but the nacelle is installed on the top of the tower, and the transformer is placed inside the tower. The transformer is flexibly suspended on the bottom of the bottom plate of the main frame by a sling, or the transformer is flexibly suspended on the bottom of the beam at the top of the tower by a sling. The wind turbine uses the structure of a transformer built into the top of the tower and flexibly suspended, and uses the inertia of the transformer and the contact and collision between the transformer and the tower to produce a certain damping effect on the swing of the tower top, thereby achieving the purpose of reducing the degree of shaking. However, the fixed structure of the transformer is not suitable for the traditional layout method of installing the transformer in the nacelle. Utility Model Content

[0006] The utility model aims to provide a dry-type transformer fixing structure for a wind turbine, which uses an elastic pull rod to connect the upper end of the transformer body with the upper end of the nacelle body, which can reduce the influence of the nacelle body vibration on the transformer body and meet the use requirements of the transformer in a long-term vibration environment.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A dry-type transformer fixing structure for a wind turbine comprises a transformer body and a cabin body, wherein the transformer body is arranged in the cabin body, and further comprises an elastic pull rod, and both sides of the upper end of the transformer body are respectively connected to the inner wall of the upper end of the cabin body through the elastic pull rod, and the elastic pull rod is provided with an elastic connecting section and an upper pull rod with adjustable length.

[0009] A cabin connecting plate is provided on the inner wall of the upper end of the cabin body, and hanging plates are provided on both sides of the upper end of the transformer body. The upper end of the elastic pull rod is connected to the corresponding cabin connecting plate, and the lower end is connected to the corresponding hanging plate.

[0010] The elastic pull rod comprises an upper pull rod, a threaded sleeve, an elastic connecting section and a lower pull rod, wherein the upper end of the threaded sleeve is threadedly connected to the lower end of the upper pull rod, and the lower end of the threaded sleeve is connected to the upper end of the lower pull rod through the elastic connecting section.

[0011] A rotating shaft portion is provided at the lower end of the hanging plate, an upper clamp is provided at the upper end of the transformer body, and two ends of the rotating shaft portion are respectively installed on the upper clamp on the corresponding side.

[0012] The two ends of the rotating shaft are provided with rotating shaft threaded holes, and the two ends of the rotating shaft are respectively installed on the upper clamping parts on the corresponding sides through hanging plate bolts, and the hanging plate bolts are threadedly inserted into the corresponding rotating shaft threaded holes.

[0013] The hanger plate is provided with a hanger plate hole, and the lower end of the elastic pull rod is installed at the corresponding hanger plate hole through a first bolt and a nut. The cabin connecting plate is provided with a connecting hole, and the upper end of the elastic pull rod is installed at the corresponding connecting hole through a second bolt and a nut.

[0014] The two elastic pull rods located on the same side of the transformer body are arranged in a triangle.

[0015] A fixed bottom plate is provided at the bottom of the transformer body and is connected to the bottom of the cabin body.

[0016] The advantages and positive effects of the utility model are:

[0017] 1. The utility model uses an elastic pull rod to connect the upper end of the transformer body with the upper end of the cabin body, which can reduce the influence of the cabin body vibration on the transformer body and meet the use requirements of the transformer in a long-term vibration environment.

[0018] 2. The elastic pull rod of the utility model can adjust the overall length as needed, which is convenient for installation and for adjusting the length of the elastic connection section on the elastic pull rod according to actual needs, thereby better meeting the need to reduce the impact of cabin vibration.

[0019] 3. The angle of the hanging plate of the utility model can be adjusted as needed to match the length adjustment of the elastic pull rod, so that the hanging plate and the elastic pull rod can be ensured to be in the same straight line, thereby ensuring the supporting strength.

[0020] 4. The utility model does not need to change the structural layout of the existing wind turbine, and the dry-type transformer is still installed in the cabin body. When in use, it is only necessary to use an elastic pull rod to connect the upper end of the dry-type transformer to the cabin body, which is also convenient for structural modification of the existing wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 for Figure 1 A top view of the utility model,

[0023] Figure 3 This is a schematic diagram of a wind turbine generator using the utility model.

[0024] Figure 4 for Figure 1 Schematic diagram of the structure of the middle hanging plate.

[0025] Figure 5 for Figure 4 Left view of the middle hanging plate.

[0026] Figure 6 for Figure 1 Schematic diagram of the structure of the elastic pull rod.

[0027] Figure 7 for Figure 6 Bottom view of the middle elastic tie rod.

[0028] Among them, 1 is the transformer body, 101 is the upper clamp, 102 is the fixed bottom plate, 2 is the hanging plate, 201 is the rotating shaft part, 2011 is the rotating shaft threaded hole, 202 is the hanging plate part, 2021 is the hanging plate hole, 3 is the elastic pull rod, 301 is the upper pull rod, 302 is the threaded sleeve, 303 is the elastic connecting section, 304 is the lower pull rod, 4 is the hanging plate bolt, 5 is the cabin connecting plate, 6 is the cabin body, 7 is the second bolt, and 8 is the first bolt. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 7 As shown, the utility model comprises a transformer body 1, a cabin body 6 and an elastic pull rod 3, wherein Figure 3 As shown, the cabin body 6 is arranged on the wind turbine, the transformer body 1 is arranged in the cabin body 6, and the lower end of the transformer body 1 is provided with a fixed bottom plate 102 fixedly mounted on the bottom of the cabin body 6, and the upper end of the transformer body 1 is provided with an upper clamp 101, and the fixed bottom plate 102 and the upper clamp 101 are both well-known structures in the art, which can be seen in patents such as CN207367750U.

[0031] like Figures 1-2 As shown, the upper inner wall of the cabin body 6 is provided with a cabin connecting plate 5, the upper clamp 101 of the transformer body 1 is provided with hanging plates 2 at both ends, and the upper end of the elastic pull rod 3 is connected to the corresponding cabin connecting plate 5, and the lower end is connected to the corresponding hanging plate 2, as shown in FIG. Figures 6-7 As shown, the elastic pull rod 3 includes an upper pull rod 301, a threaded sleeve 302, an elastic connection section 303 and a lower pull rod 304, wherein the upper end of the threaded sleeve 302 is threadedly connected to the lower end of the upper pull rod 301, the upper end of the upper pull rod 301 is connected to the corresponding cabin connecting plate 5, the lower end of the threaded sleeve 302 is connected to the upper end of the lower pull rod 304 through the elastic connection section 303, and the lower end of the lower pull rod 304 is connected to the corresponding hanging plate 2. When the utility model is used, the elastic connection section 303 can be adapted to elastically expand and contract in accordance with the vibration of the cabin body 6, thereby reducing the influence of the cabin body 6 vibration on the transformer body 1. In addition, screwing the upper pull rod 301 can change the length of its insertion into the threaded sleeve 302, thereby changing the length of the entire elastic pull rod 3, so as to better meet the installation requirements and reduce the need for vibration influence. The elastic connection section 303 can be made of springs or other elastic elements as needed.

[0032] like Figure 2 and Figures 4-5 As shown, in this embodiment, the hanging plate 2 includes a hanging plate portion 202 and a rotating shaft portion 201 arranged at the lower end of the hanging plate portion 202, wherein the two ends of the rotating shaft portion 201 are respectively installed on the upper clamp 101 on the corresponding side, and the hanging plate portion 202 is connected to the lower end of the corresponding elastic pull rod 3.

[0033] like Figure 4 As shown, in this embodiment, the two ends of the rotating shaft portion 201 are provided with rotating shaft threaded holes 2011. Figure 1 As shown, both ends of the rotating shaft 201 are respectively mounted on the upper clamp 101 on the corresponding side through the hanging plate bolts 4, and the hanging plate bolts 4 are threadedly inserted into the corresponding rotating shaft threaded holes 2011.

[0034] like Figure 4 As shown, in this embodiment, the hanging plate portion 202 is provided with a hanging plate hole 2021. Figure 2 As shown, the lower end of the lower tie rod 304 of the elastic tie rod 3 is installed at the corresponding hanging plate hole 2021 through the cooperation of the first bolt 8 and the nut, and the cabin connecting plate 5 is provided with a connecting hole, and the upper end of the upper tie rod 301 of the elastic tie rod 3 is installed at the corresponding connecting hole through the cooperation of the second bolt 7 and the nut. In this embodiment, the hanging plate bolts 4, the first bolts 8, and the second bolts 7 are all anti-loosening bolts, which are commercially available products. In addition, the hanging plate bolts 4, the first bolts 8, and the second bolts 7 can be installed with butterfly washers and other components to further prevent the bolts from loosening in a long-term vibration environment, which is a well-known technology in the art.

[0035] like Figure 2 As shown, in this embodiment, two elastic pull rods 3 located on the same side of the transformer body 1 are arranged in a triangle, which ensures the support strength and is convenient for installation and adjustment. The number and arrangement of the elastic pull rods 3 can also be selected and designed according to actual needs.

[0036] The working principle of the utility model is:

[0037] like Figures 1 to 3 As shown, the transformer body 1 of the utility model is installed in an independent space at the rear of the cabin body 6, and the fixed bottom plate 102 at the bottom of the transformer body 1 is connected to the bottom of the cabin body 6. At the same time, the hanging plates 4 on both sides of the upper end of the transformer body 1 of the utility model are respectively connected to the cabin connecting plates 5 on the inner wall of the upper end of the cabin body 6 through elastic pull rods 3, and the elastic connecting section 303 on the elastic pull rod 3 can be adaptively elastically expanded and contracted in accordance with the vibration of the cabin body 6, thereby reducing the influence of the vibration of the cabin body 6 on the transformer body 1.

[0038] In addition, Figures 6-7 As shown, when the elastic tie rod 3 is installed, screwing the upper tie rod 301 can adjust the depth of its insertion into the threaded sleeve 302, thereby changing the length of the entire elastic tie rod 3 to facilitate installation. In addition, the installer can also screw the upper tie rod 301 to adjust the length of the elastic connecting section 303. Specifically, in the cabin body 6, when the installation space of the elastic tie rod 3 is determined, when the overall length of the upper tie rod 301 and the threaded sleeve 302 is lengthened, the elastic connecting section 303 is shortened, and vice versa. In this way, the length of the elastic connecting section 303 can be adjusted according to actual needs to change its elastic change ability, which can better meet the need to reduce the impact of cabin vibration.

[0039] And as Figure 1 and Figures 4-5As shown, both ends of the rotating shaft 201 of the hanger plate 2 are connected to the upper clamp 101 on the corresponding side through the hanger plate bolts 4. After loosening the hanger plate bolts 4, the installer can adjust the inclination angle of the hanger plate 2 according to actual needs to match the length adjustment of the elastic pull rod 3, so that the hanger plate 2 and the elastic pull rod 3 can be in the same straight line, thereby ensuring the supporting strength.

Claims

1. A dry-type transformer fixing structure for a wind turbine generator, comprising a transformer body and a nacelle body, wherein the transformer body is arranged in the nacelle body, characterized in that: It comprises an elastic pull rod (3), and the two sides of the upper end of the transformer body (1) are respectively connected to the inner wall of the upper end of the cabin body (6) through the elastic pull rod (3), and the elastic pull rod (3) is provided with an elastic connection section (303) and an upper pull rod (301) with adjustable length.

2. The dry-type transformer fixing structure for a wind turbine generator according to claim 1 is characterized in that: The upper inner wall of the cabin body (6) is provided with a cabin body connecting plate (5), and the upper two sides of the transformer body (1) are provided with hanging plates (2). The upper end of the elastic pull rod (3) is connected to the corresponding cabin body connecting plate (5), and the lower end is connected to the corresponding hanging plate (2).

3. The dry-type transformer fixing structure for a wind turbine generator according to claim 1 or 2, characterized in that: The elastic pull rod (3) comprises an upper pull rod (301), a threaded sleeve (302), an elastic connecting section (303) and a lower pull rod (304), wherein the upper end of the threaded sleeve (302) is threadedly connected to the lower end of the upper pull rod (301), and the lower end of the threaded sleeve (302) is connected to the upper end of the lower pull rod (304) via the elastic connecting section (303).

4. The dry-type transformer fixing structure for a wind turbine generator according to claim 2 is characterized in that: The lower end of the hanging plate (2) is provided with a rotating shaft portion (201), the upper end of the transformer body (1) is provided with an upper clamping piece (101), and both ends of the rotating shaft portion (201) are respectively mounted on the upper clamping piece (101) on the corresponding side.

5. The dry-type transformer fixing structure for a wind turbine generator according to claim 4 is characterized in that: The two ends of the rotating shaft portion (201) are provided with rotating shaft threaded holes (2011), and the two ends of the rotating shaft portion (201) are respectively installed on the upper clamping member (101) on the corresponding side through hanging plate bolts (4), and the hanging plate bolts (4) are threadedly inserted into the corresponding rotating shaft threaded holes (2011).

6. The dry-type transformer fixing structure for a wind turbine generator according to claim 2, characterized in that: The hanging plate (2) is provided with a hanging plate hole (2021), and the lower end of the elastic pull rod (3) is installed at the corresponding hanging plate hole (2021) by means of a first bolt (8) and a nut. The cabin connecting plate (5) is provided with a connecting hole, and the upper end of the elastic pull rod (3) is installed at the corresponding connecting hole by means of a second bolt (7) and a nut.

7. The dry-type transformer fixing structure for a wind turbine generator according to claim 1 is characterized in that: Two elastic pull rods (3) located on the same side of the transformer body (1) are arranged in a triangle.

8. The dry-type transformer fixing structure for a wind turbine generator according to claim 1 is characterized in that: A fixed bottom plate (102) is provided at the bottom of the transformer body (1) and is connected to the bottom of the cabin body (6).

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