Fixing assembly, transformer and wind generating set

Abstract

The utility model provides a fixing assembly, transformer and wind generating set, the fixing assembly is used for fixing the transformer body in the oil tank main body of the transformer, the fixing assembly comprises: a base used for being installed in the oil tank main body; the clamping component is installed on the base and constructed to be capable of rotating relative to the base, the clamping component comprises a first supporting arm and a second supporting arm, and a clamping opening is formed between the opposite clamping faces of the first supporting arm and the second supporting arm so as to clamp the device body. According to the fixing assembly provided by the utility model, the body of the transformer can be stably fixed in the oil tank main body of the transformer, so that the body is prevented from shifting relative to the oil tank main body in the transportation and working processes of the transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power, in particular to a fixing assembly, a transformer and a wind turbine generator set. The fixing assembly is used for fixing a transformer body in an oil tank body of the transformer. Background Art

[0002] Transformers perform functions such as voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization, making them widely used, particularly in wind power technology. Oil-immersed transformers are commonly used in wind turbines and are installed in the nacelle.

[0003] However, during the operation of the wind turbine, the vibration of the blades will be transmitted to the nacelle and then to the transformer, which may cause the transformer body to shift relative to the transformer tank body, which may affect the stability of the transformer. Utility Model Content

[0004] The purpose of the utility model is to provide a fixing assembly, which can stably fix the body of the transformer in the oil tank body to prevent the body from shifting relative to the oil tank body during transportation and operation of the transformer.

[0005] Another object of the present invention is to provide a transformer, which includes a fixing assembly capable of stably fixing the transformer body in the oil tank body, thereby having excellent vibration resistance and reliability.

[0006] Another object of the present invention is to provide a wind turbine generator set, which includes the above-mentioned transformer and thus has excellent operating stability and reliability.

[0007] According to one aspect of the present invention, a fixing assembly is provided, which is used to fix the body of a transformer in the oil tank body of the transformer, wherein the fixing assembly includes: a base for being installed in the oil tank body; a clamping member, which is installed on the base and is constructed to be rotatable relative to the base, and includes a first arm and a second arm, wherein a clamping opening is formed between the clamping surfaces of the first arm and the second arm facing each other to clamp the body.

[0008] Preferably, the fixing assembly may further include an elastic member connected between the base and the clamping member and installed to apply tension or pressure to the clamping member to keep the clamping opening in a predetermined orientation.

[0009] Preferably, the fixing assembly may further include a shock-absorbing pad, which is provided on the first support arm and the second support arm and at least partially protrudes relative to the clamping surface of the first support arm and the clamping surface of the second support arm.

[0010] Preferably, the angle between the first arm and the second arm may be greater than or equal to 80 degrees and less than 90 degrees.

[0011] Preferably, the clamping surface of the first arm and the clamping surface of the second arm may be planes.

[0012] According to another aspect of the present invention, a transformer is provided, which is used in a wind turbine generator set. The transformer includes an oil tank body, an oil tank cover, a body, and the fixing assembly described above.

[0013] Preferably, the base of the fixing assembly can be installed on the inner bottom surface of the oil tank body, and the device body may include a device body, an upper clamp, a lower clamp and a snap fit member, and the snap fit member is arranged on the side surface of the lower clamp and has a snap fit protrusion with a shape complementary to the clamping mouth of the clamping member of the fixing assembly to engage with the clamping member.

[0014] Preferably, the transformer may include at least four engaging members and at least four fixing assemblies that are respectively engaged with each other, wherein the at least four engaging members are respectively arranged on different side surfaces of the lower clamp, wherein at least four fixing assemblies are respectively installed on corresponding different sides of the inner bottom surface of the oil tank body, and the clamping mouth of each clamping member is directed toward the center of the inner bottom surface.

[0015] Preferably, the device body can be interference fitted in the oil tank body in the vertical direction.

[0016] Preferably, the tank body may be provided with a positioning column on the inner bottom surface of the tank body, and the body may further include a base, which is provided on the lower part of the lower clamp and has a positioning hole, wherein the positioning column may be provided to pass through the positioning hole.

[0017] According to another aspect of the present invention, a wind turbine generator set is provided, comprising a tower and a nacelle installed on top of the tower, wherein the wind turbine generator set further comprises the transformer as described above, and the transformer is fixedly connected to the nacelle.

[0018] The fixing assembly according to the utility model has the advantages of simple structure and easy manufacturing, and can stably fix the transformer body in the oil tank body of the transformer to prevent the transformer body from lateral displacement relative to the oil tank body during transportation and operation of the transformer.

[0019] In addition, the transformer according to the present invention includes the fixing assembly as described above, which can prevent the body from shifting relative to the tank body, thereby improving the stability of the body, and thus having excellent vibration resistance and reliability, thereby improving the quality of the transformer.

[0020] In addition, the wind turbine generator set according to the present invention includes the transformer as described above, so that the stability and reliability of the operation of the wind turbine generator set can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects and features of the present application will become more apparent through the following description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0022] Figure 1 1 is a schematic diagram showing the installation of a transformer according to an embodiment of the present utility model;

[0023] Figure 2 is a schematic perspective view showing a transformer according to an embodiment of the present utility model;

[0024] Figure 3 It shows Figure 2 Front view of the transformer;

[0025] Figure 4 It shows Figure 2 A top view of the transformer;

[0026] Figure 5 It shows Figure 2 Schematic diagram of the oil tank body of the transformer;

[0027] Figure 6 It shows Figure 5 A schematic diagram of the load-bearing structure of the fuel tank body;

[0028] Figure 7 It shows Figure 2 Schematic diagram of the transformer body;

[0029] Figure 8 It shows Figure 2 A schematic diagram of an assembly of a transformer body and an oil tank cover;

[0030] Figure 9 is a schematic perspective view showing a fixing assembly according to an embodiment of the present utility model;

[0031] Figure 10 is a schematic cross-sectional view showing the structure of the transformer according to the present invention excluding the transformer body and the oil tank cover;

[0032] Figure 11is a schematic cross-sectional view showing a transformer according to the present invention; and

[0033] Figure 12 It is a schematic diagram showing the assembly of the transformer body and the fixing component according to the utility model.

[0034] Figure Number:

[0035] 1-transformer; 2-cabin base; 10-tank body; 110-tank wall; 120-bearing structure; 121-connecting flange; 122-annular reinforcement rib; 123-end reinforcement rib; 124-bottom support reinforcement rib; 130-positioning column; 20-tank cover; 30-body; 310-body body; 320-upper clamp; 330-lower clamp; 340-clamping piece; 350-bottom support; 351-positioning hole; 40-fixing assembly; 410-base; 420-clamping member; 421-first support arm; 422-second support arm; 430-elastic member; 440-shock-absorbing pad; 450-pin shaft. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical concept of the present invention, the specific embodiments of the present invention will be described clearly, completely, and in detail below with reference to the accompanying drawings. It should be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. For those skilled in the art, the specific meanings of the terms used in this utility model can be understood according to the specific circumstances.

[0038] It will be understood that although terms such as "first," "second," etc. may be used herein to describe various elements, these elements are not limited by these terms. Rather, these terms are merely used to distinguish one element from another. Thus, what is referred to as a first element in the exemplary embodiments described herein could also be referred to as a second element without departing from the teachings of the exemplary embodiments.

[0039] For ease of description, the terms "inside", "outside", "upper" and "lower" mentioned below are consistent with the inside, outside, upper and lower directions in the drawings themselves, but do not limit the structure of the present invention.

[0040] In addition, throughout the specification, when an element is described as being “disposed on,” “connected to,” or “coupled to” another element, the element may be directly “disposed on,” “connected to,” or “coupled to” the other element, or one or more other elements may be interposed therebetween.

[0041] The utility model aims to provide a fixing assembly for fixing the body of a transformer between the oil tank body of the transformer, and a transformer and a wind turbine generator set including the fixing assembly. The fixing assembly can stably fix the body of the transformer in the oil tank body of the transformer to prevent the body from shifting relative to the oil tank body during transportation and operation of the transformer.

[0042] In the prior art, the transformer body adopts the following structure to achieve lower positioning: a hole is opened on the pad of the lower clamp of the body, and a positioning pin is used to pass through the hole to cooperate with the hole. However, during transportation, this structure will cause the transformer body and the oil tank body to shift relative to each other, affecting the stability of the body positioning, and further affecting the quality of the entire transformer product. In addition, in the field of wind power technology, transformers are usually installed in the cabin of the wind turbine generator set by hanging or suspending. In this case, during the operation of the wind turbine generator set, the vibration of the blades will be transmitted to the cabin, and then to the transformer, which may affect the fixing stability of the transformer body. Specifically, the above-mentioned vibration may cause the relative movement of the body relative to the oil tank body, and the relative movement of the body relative to the oil tank body will seriously affect the overall quality of the transformer.

[0043] The fixing assembly of the present invention can stably fix the transformer body to the oil tank body of the transformer to prevent the body from shifting relative to the oil tank body during transportation and operation of the transformer, that is, effectively avoid relative movement between the body and the oil tank body during transportation and operation of the transformer, thereby improving the quality stability of the transformer product. Therefore, compared with the prior art, the fixing assembly of the present invention and the transformer including the fixing assembly can overcome the above shortcomings.

[0044] In the following, reference will be made to Figures 1 to 12 A transformer, a fixing assembly for the transformer, and a wind turbine generator system including the transformer according to embodiments of the present invention are described in detail.

[0045] Figure 1 1 is a schematic diagram showing the installation of a transformer according to an embodiment of the present utility model. Figure 2 is a schematic perspective view showing a transformer according to an embodiment of the present utility model, Figure 3 It shows Figure 2 Front view of the transformer, Figure 4 It shows Figure 2Top view of the transformer, Figure 5 It shows Figure 2 Schematic diagram of the transformer tank body, Figure 6 It shows Figure 5 Schematic diagram of the load-bearing structure of the fuel tank body, Figure 7 It shows Figure 2 Schematic diagram of the transformer body, Figure 8 It shows Figure 2 Schematic diagram of the assembly of the transformer body and the oil tank cover, Figure 9 is a schematic perspective view showing a fixing assembly according to an embodiment of the present utility model, Figure 10 is a schematic cross-sectional view showing the structure of the transformer according to the present invention, excluding the transformer body and the oil tank cover. Figure 11 is a schematic cross-sectional view showing a transformer according to the present invention, and Figure 12 It is a schematic diagram showing the assembly of the transformer body and the fixing assembly according to the utility model.

[0046] In the present invention, the wind turbine generator set may include a tower, a nacelle installed on the top of the tower, and a transformer 1. Figure 1 As shown, the transformer 1 of the embodiment of the present invention is fixedly connected to the cabin. For example, the transformer 1 can be connected to the cabin platform main beam and can be arranged below the cabin base 2. Figure 1 In the figure, only the nacelle base 2 is schematically shown. In the present invention, the transformer 1 may be a liquid-immersed transformer with excellent insulation and heat dissipation properties, for example, an oil-immersed transformer.

[0047] like Figures 2 to 9 As shown, in this embodiment, the transformer 1 may include an oil tank body 10, an oil tank cover 20, and a transformer body 30. The transformer body 30 may be installed in the oil tank body 10. In addition, the transformer 1 may further include a fixing assembly 40 to be described later.

[0048] Reference Figures 4 to 6 as well as Figure 10 The fuel tank body 10 may include a tank wall 110, a supporting structure 120 disposed on the outside of the tank wall 110, and a positioning column 130 disposed on the inside of the tank wall 110. The tank wall 110 may be a relatively thin sheet metal member and may have a box shape. For example, the tank wall 110 may be welded into the box shape. The supporting structure 120 may include a connecting flange 121, annular reinforcement ribs 122, end reinforcement ribs 123, and bottom support reinforcement ribs 124.

[0049] Specifically, the connecting flange 121 can be used to connect the transformer 1 to the bottom of the cabin platform. The connecting flange 121 can be combined with the annular reinforcement ribs 122 to form a frame structure. The end reinforcement ribs 123 can be provided on the side surfaces of the box wall 110 that are opposite to each other in its length direction and on the lower surface of the connecting flange 121. The bottom support reinforcement ribs 124 can be provided below the box wall 110 and can be connected to the annular reinforcement ribs 122. In addition, the bottom support reinforcement ribs 124 extend from the outer lower surface of the box wall 110 to the side surfaces of the box wall 110 that are opposite to each other in the width direction to provide a stable support.

[0050] In this embodiment, the bearing structure 120 may include two connecting flanges 121, two annular reinforcement ribs 122, four end reinforcement ribs 123 and six bottom support reinforcement ribs 124. More specifically, the two connecting flanges 121 may be arranged on both sides of the box wall 110 in its length direction and symmetrical to each other, the two annular reinforcement ribs 122 are parallel to each other and connected to the two connecting flanges 121 to form a frame structure, two end reinforcement ribs 123 may be provided on the lower side of each connecting flange 121, and six bottom support reinforcement ribs 124 may be combined with the bottom of the annular reinforcement ribs 122. It should be understood that the number and arrangement of the connecting flanges 121, the annular reinforcement ribs 122, the end reinforcement ribs 123 and the bottom support reinforcement ribs 124 are not limited to Figure 3 and Figure 4 The number and arrangement shown in , can be changed according to actual needs. In addition, the connecting flange 121, the annular reinforcement rib 122, the end reinforcement rib 123 and the bottom support reinforcement rib 124 can be integrated into one by a method such as welding, and are fixedly connected to the box wall 110.

[0051] When the transformer 1 is installed below the nacelle platform in a hanging or suspended manner (such as Figure 1 As shown), the transformer 1 itself and the vibration load can be supported by the supporting structure 120.

[0052] Reference Figure 10 The positioning posts 130 may be disposed on the inner bottom surface of the tank body 10. For example, the positioning posts 130 may be positioned on the inner bottom surface of the tank wall 110 by welding or bolting. In this embodiment, the tank body 10 has six positioning posts 130, which are arranged symmetrically relative to the center of the tank body 10. However, the number of positioning posts 130 is not limited to this; a greater or lesser number of positioning posts 130 may be provided as needed. For example, the positioning posts 130 may be pins.

[0053] Reference Figure 1 as well as Figure 7 and Figure 8The fuel tank cover 20 can be assembled with the fuel tank body 30 to form an assembly. For example, the fuel tank cover 20 and the fuel tank body 30 can be assembled together by welding. In addition, the fuel tank body 30 can be installed inside the fuel tank body 10 and sealed by the fuel tank cover 20.

[0054] Reference Figures 7 to 12 The body 30 can be reliably combined with the tank body 10 through the fixing assembly 40.

[0055] Specifically, if Figure 7 As shown, the device body 30 may include a device body main body 310, an upper clamping member 320, a lower clamping member 330, and a locking member 340. The device body main body 310 may be disposed between the upper clamping member 320 and the lower clamping member 330. The locking member 340 may be disposed on a side surface of the lower clamping member 330 and may have a locking protrusion with a shape complementary to the clamping opening of a clamping member 420 (described later) of the fixing assembly 40, so as to engage with the clamping member 420. As an example, the locking member 340 may be welded to the side surface of the lower clamping member 330.

[0056] The body 30 may also include a base 350. The base 350 may be disposed on the lower portion of the lower clamp 330 and may have a positioning hole 351. The positioning post 130 of the tank body 10 may be disposed so as to pass through the positioning hole 351. Thus, during installation of the body 30, the bottom positioning hole 351 of the body 30, guided by the positioning post 130, allows for rough positioning of the body 30 relative to the tank body 10. Therefore, the number of positioning holes 351 in the base 350 may be the same as the number of positioning posts 130.

[0057] Below, we will refer to Figure 9 The configuration of the fixing assembly 40 will be described in detail.

[0058] like Figure 9 As shown, the fixing assembly 40 includes a base 410 for installation in the fuel tank body 10; a clamping member 420, mounted on the base 410 and configured to rotate relative to the base 410, and including a first arm 421 and a second arm 422. The first arm 421 and the second arm 422 have opposing clamping surfaces forming a clamping opening for clamping the fuel tank body 30. Furthermore, the fixing assembly 40 may further include an elastic member 430, a shock-absorbing pad 440, and a pin 450.

[0059] Specifically, the base 410 may be provided with a pin hole at the top and a mounting hole at the bottom for mounting the elastic member 430. Accordingly, the clamping member 420 may also have a pin hole and a mounting hole. The clamping member 420 may be mounted on the base 410 via a pin 450, allowing the clamping member 420 to rotate relative to the base 410. Specifically, the pin 450 may pass through the pin holes of the base 410 and the pin holes of the clamping member 420 and may be mounted on the base 410 via an end bolt.

[0060] The clamping member 420 may include a first arm 421 and a second arm 422. A clamping opening may be formed between the opposing clamping surfaces of the first arm 421 and the second arm 422 to clamp the body 30. In this embodiment, the clamping member 420 may be processed into a shape similar to an angle iron, but is not limited thereto, as long as the clamping member 420 is formed with a clamping opening. As an example, the angle between the first arm 421 and the second arm 422 may be greater than or equal to 80 degrees and less than 90 degrees to more reliably engage with the engaging member 340. Furthermore, the first arm 421 and the second arm 422 may have a rectangular shape, a conical shape, an arc shape, etc., and may be integrated with each other or fixedly connected to each other via a connecting member. Furthermore, as an example, the clamping surfaces of the first arm 421 and the second arm 422 may be flat surfaces, thereby facilitating processing. Optionally, the clamping surface of the first arm 421 and the clamping surface of the second arm 422 may be curved surfaces to adapt to different mating components.

[0061] An elastic member 430 may be connected between the base 410 and the clamping member 420. By way of example, the elastic member 430 may be a spring, but is not limited thereto. One end of the elastic member 430 is connected to the mounting hole of the base 410, while the other end is connected to the mounting hole of the clamping member 420. The elastic member 430 may be installed to apply tension or pressure to the clamping member 420, thereby maintaining the clamping opening in a predetermined orientation, thereby facilitating the assembly of the engaging member 340 of the body 30 into the clamping opening.

[0062] As an example, the elastic member 430 may be installed to initially exert a tensile force or a compressive force to pull or push the clamping member 420, causing the clamping surface of the first arm 421 to be located to the left relative to the vertical direction, and causing the clamping surface of the second arm 422 to be located to the right relative to the positional direction, thereby maintaining the clamping opening facing upward (i.e., in an open state) to facilitate assembly of the transformer body 30. For example, when the transformer body 30 of the transformer 1 is not assembled (i.e., the fixing assembly 40 is in a free state), the elastic member 430 applies a tensile force or a compressive force to the clamping member 420, causing the clamping surface of the first arm 421 to have an angle of, for example, but not limited to, 5 to 10 degrees to the left relative to the vertical direction (the direction away from the transformer body 30 shown in the figure). In other words, maintaining the clamping opening in a predetermined direction enables the engaging member 340 to be smoothly engaged with the clamping opening during the lowering and installation process of the transformer body 30. Therefore, when assembling the device body 30, the engaging member 340 can smoothly contact the first arm 421 and the second arm 422 on the clamping member 420 or the shock-absorbing pad 440 to be described later, and during the process of lowering the device body 30, the device body 30 drives the clamping member 420 to rotate.

[0063] Shock-absorbing pads 440 may be provided on first and second arms 421 and 422, and at least partially protrude relative to the clamping surface of first and second arms 421 and 422. Shock-absorbing pads 440 may be made of an elastic material, such as rubber, for example. Thus, shock-absorbing pads 440 may provide both cushioning and protection.

[0064] In this embodiment, the fixing assembly 40 may have a simple structure and be easy to manufacture, so that the body 30 of the transformer 1 may be fixed with a simple structure.

[0065] In the following, reference will be made to Figures 10 to 12 The fixing structure of the body 30 of the transformer 1 will be described in detail.

[0066] like Figures 10 to 12 As shown, in the transformer 1 according to this embodiment, the base 410 of the fixing assembly 40 is installed on the inner bottom surface of the tank body 10 .

[0067] like Figure 10 As shown, as an example, the transformer 1 may include four fixing assemblies 40. The four fixing assemblies 40 may be installed on different sides of the inner bottom surface of the tank body 10, and the clamping opening of each clamping member 420 is oriented toward the center of the inner bottom surface. Figure 10 In the cross-sectional view shown, the four fixing assemblies 40 are respectively installed on the upper side, lower side, left side and right side of the inner bottom surface of the tank body 10, and can be respectively installed so that the clamping openings of the clamping members 420 face the center of the inner bottom surface. Figure 11As shown, the body 30 is mounted at the center of the inner bottom surface of the tank body 10 .

[0068] Corresponding to the four fixing assemblies 40, the tank body 30 may include four engaging members 340 that may be respectively disposed on the four side surfaces of the lower clamping member 330. Thus, by engaging the four fixing assemblies 40 with the four engaging members 340, the tank body 30 may be fixed to the inner bottom surface of the tank body 10 from the four sides thereof.

[0069] In this embodiment, the transformer 1 is described as having four fixing assemblies 40, but the number of fixing assemblies 40 is not limited thereto. For example, the transformer 1 has two fixing assemblies 40 installed on the upper and lower sides or the left and right sides of the inner bottom surface of the tank body 10 to Figure 10 The body 30 is fixed on both sides in the left and right directions or the up and down directions.

[0070] Preferably, the transformer 1 may include at least four engaging members 340 and at least four fixing assemblies 40 that are respectively engaged with each other, the at least four engaging members 340 are respectively arranged on different side surfaces of the lower clamping member 330, and the at least four fixing assemblies 40 are respectively installed on corresponding different sides of the inner bottom surface of the oil tank body 10, and the clamping opening of each clamping member 420 is directed toward the center of the inner bottom surface, so that Figure 10 The body 30 is fixed on the upper, lower, left and right sides.

[0071] For ease of understanding, the process of assembling the body 30 of the transformer 1 will now be described.

[0072] First, the fuel tank cover 20 and the device body 30 can be combined into one to form an assembly, and then the assembly can be lowered into the fuel tank body 10, and the bottom positioning hole 351 of the device body 30 can realize the rough positioning of the device body 30 relative to the fuel tank body 10 under the guidance of the positioning column 130. As the assembly is further lowered, the locking part 340 of the device body 30 can contact the shock-absorbing pad 440 on the first arm 421 and the second arm 422 of the clamping member 420, and at the same time compress the shock-absorbing pad 440 and drive the clamping member 420 to rotate relative to the base 410, thereby reliably clamping the device body 30.

[0073] In this manner, the transformer body 30 can be fixed horizontally and vertically, effectively preventing displacement of the transformer body 30 relative to the tank body 10, thereby preventing damage to the transformer body 30 due to relative movement caused by vibration. In other words, the fixing assembly 40 according to this embodiment can effectively and stably fix the transformer body 30 of the transformer 1 within the tank body 10 of the transformer 1, thereby preventing lateral displacement of the transformer body 30 relative to the tank body 10 during transportation and operation of the transformer 1.

[0074] In addition, in the present invention, the body 30 can also be interference-fitted in the oil tank body 10 in the vertical direction, thereby further preventing the body 30 from shifting. As a result, the body 30 can be prevented from moving in the horizontal and vertical directions during operation of the transformer 1.

[0075] Specifically, during assembly of the fuel tank body 30, the fuel tank cover 20 and the fuel tank body 30 can be assembled so that the distance from the bottom surface of the fuel tank cover 20 to the bottom surface of the fuel tank body 30 and then to the bottom surface of the fuel tank body 30 is slightly larger than the vertical dimension (i.e., height) of the interior of the fuel tank body 10, allowing the fuel tank body 30 to be interference-fitted into the fuel tank body 10. In other words, the fuel tank body 30 has a slight vertical interference with the fuel tank body 10. For example, this interference can be 2 mm to 5 mm, preferably 2 mm to 3 mm. Then, during installation of the fuel tank cover 20 and fuel tank body 30 assembly into the fuel tank body 10, the fuel tank cover 20 is connected to the fuel tank body 10 via connectors (such as bolts) to vertically interference-fit the fuel tank body 30 into the fuel tank body 10, thereby applying a vertical preload to the fuel tank body 30.

[0076] Therefore, the weight of the body 30 is completely loaded within the fuel tank body 10. Furthermore, the assembly of the fuel tank cover 20 and the fuel tank body 10 creates an interference fit between the body 30 and the fuel tank body 10. This provides a significant preload on the body 30, creating a significant frictional force between the body 30 and the fuel tank body 10 due to gravity and the preload. Thus, in addition to securing the assembly 40, friction and the preload can be used to further prevent the body 30 from moving relative to the fuel tank body 10.

[0077] like Figure 12 As shown, after the assembly of the device body 30 is completed, the engaging member 340 of the device body 30 can be completely engaged in the clamping member 420 of the fixing assembly 40. At this time, the center of the engaging member 340 and the center of the pin 450 are substantially on the same horizontal plane, so the pin 450 can also be used to offset the lateral displacement of the device body 30 when it vibrates.

[0078] Therefore, when the transformer 1 according to this embodiment is applied to a wind turbine, even if the blade vibration of the wind turbine is transmitted to the nacelle and then to the transformer 1, the phase movement of the transformer body 30 relative to the tank body 10 can be effectively prevented.

[0079] As described above, the fixing assembly proposed according to the present invention has the advantages of simple structure and easy manufacturing, and can stably fix the transformer body in the oil tank body of the transformer to prevent the transformer body from being laterally shifted relative to the oil tank body during transportation and operation of the transformer.

[0080] In addition, according to the embodiment of the present invention, the transformer including the above-mentioned fixing assembly can prevent the body of the transformer from shifting relative to the oil tank body, thereby improving the stability of the body of the transformer, and thus can have excellent vibration resistance and reliability, thereby improving the quality of the transformer.

[0081] In addition, according to the embodiments of the present invention, the wind turbine generator set including the transformer can have excellent reliability and can ensure stable operation of the wind turbine generator set.

[0082] The above describes in detail the specific embodiments of the present invention. Although some embodiments have been shown and described, those skilled in the art should understand that these embodiments may be combined, modified, and improved (for example, different technical features of the present invention may be combined to obtain new technical solutions) without departing from the principles and spirit of the present invention, the scope of which is defined by the claims. Such combinations, modifications, and improvements are also intended to fall within the scope of protection of the present invention.

Claims

1. A fixing assembly, the fixing assembly (40) being used to fix the body (30) of a transformer (1) in the oil tank body (10) of the transformer (1), characterized in that: The fixing assembly (40) comprises: A base (410) for being installed in the oil tank body (10); The clamping member (420) is mounted on the base (410), is configured to be rotatable relative to the base (410), and comprises a first arm (421) and a second arm (422), wherein a clamping opening is formed between the clamping surfaces of the first arm (421) and the second arm (422) facing each other to clamp the device body (30).

2. The fixing assembly according to claim 1, wherein: The fixing assembly (40) further includes an elastic member (430) connected between the base (410) and the clamping member (420) and installed to apply tension or pressure to the clamping member (420) to keep the clamping opening in a predetermined orientation.

3. The fixing assembly according to claim 1, wherein: The fixing assembly (40) further includes a shock-absorbing pad (440), which is arranged on the first support arm (421) and the second support arm (422) and at least partially protrudes relative to the clamping surface of the first support arm (421) and the clamping surface of the second support arm (422).

4. The fixing assembly according to any one of claims 1 to 3, characterized in that: The included angle between the first support arm (421) and the second support arm (422) is greater than or equal to 80 degrees and less than 90 degrees.

5. The fixing assembly according to any one of claims 1 to 3, characterized in that: The clamping surface of the first support arm (421) and the clamping surface of the second support arm (422) are planes.

6. A transformer, the transformer (1) being used for a wind turbine generator set, characterized in that: The transformer (1) comprises an oil tank body (10), an oil tank cover (20), a transformer body (30), and a fixing assembly (40) according to any one of claims 1 to 5.

7. The transformer according to claim 6, characterized in that The base (410) of the fixing assembly (40) is mounted on the inner bottom surface of the oil tank body (10); the device body (30) comprises a device body (310), an upper clamping member (320), a lower clamping member (330) and a snap-fit member (340); the snap-fit member (340) is arranged on the side surface of the lower clamping member (330) and has a snap-fitting protrusion with a shape complementary to the clamping opening of the clamping member (420) of the fixing assembly (40) so as to snap-fit with the clamping member (420).

8. The transformer according to claim 7, characterized in that The transformer (1) comprises at least four engaging members (340) and at least four fixing assemblies (40) respectively engaging with each other. Wherein, at least four of the engaging members (340) are respectively arranged on different side surfaces of the lower clamping member (330). At least four fixing assemblies (40) are respectively installed on corresponding different sides of the inner bottom surface of the oil tank body (10), and the clamping opening of each clamping member (420) is oriented toward the center of the inner bottom surface.

9. The transformer according to claim 6, characterized in that The device body (30) is interference-fitted in the oil tank body (10) in the vertical direction.

10. The transformer according to claim 7 or 8, characterized in that: The oil tank body (10) is provided with a positioning column (130) on the inner bottom surface of the oil tank body (10), and the device body (30) further includes a base (350), which is provided on the lower part of the lower clamp (330) and has a positioning hole (351), wherein the positioning column (130) is provided to pass through the positioning hole (351).

11. A wind turbine generator system comprising a tower and a nacelle mounted on top of the tower, characterized in that: The wind turbine generator set further comprises a transformer (1) according to any one of claims 6 to 10, wherein the transformer (1) is fixedly connected to the nacelle.

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