Transformer oil tank and transformer therewith

Abstract

A transformer oil tank and a transformer therewith. The transformer oil tank comprises: a tank body, which is of a hollow box-shaped structure formed by means of bending an aluminum alloy plate; a top plate, which is fixedly connected to the top of the tank body; a bottom plate, which is fixedly connected to the bottom of the tank body; a mounting frame assembly, which is fixedly arranged on the outer side of the tank body; and a fastening mechanism, which is arranged on the bottom plate, the fastening mechanism being configured to fix a heavy component in the tank body to the bottom plate. Compared with the prior art, the transformer oil tank and the transformer therewith, which are provided in the present application, can meet the requirements of light weight and miniaturization of a vehicle transformer.

Description

Transformer oil tank and transformer thereof

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 6, 2023, with application number 202311666856.8 and invention name “A transformer oil tank and its transformer”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of transformers, and more specifically, to a transformer oil tank and a transformer thereof. Background Art

[0003] Transformers are a major component of rail vehicles and account for a significant portion of their weight. As rail vehicles pursue speed, utilize high-impedance transformers, and develop lightweight components, the development of lightweight transformer oil tanks is particularly important.

[0004] The common material used for transformer oil tanks in existing rail trains is low-carbon steel. This type of transformer oil tank is heavy, which is not conducive to lightweighting of the entire vehicle.

[0005] Therefore, there is an urgent need to provide a transformer oil tank and a transformer thereof that can meet the requirements of lightweight and miniaturization of vehicle transformers.

[0006] Summary of the Invention

[0007] In order to solve the above technical problems, the present application provides a transformer oil tank and a transformer thereof, which can meet the requirements of lightweight and miniaturization of vehicle transformers.

[0008] The technical solutions provided in this application are as follows:

[0009] A transformer oil tank, comprising:

[0010] The box body is a hollow box-shaped structure formed by bending an aluminum alloy plate;

[0011] a top plate fixedly connected to the top of the box body;

[0012] a bottom plate fixedly connected to the bottom of the box body;

[0013] A mounting bracket assembly fixedly arranged on the outside of the box body;

[0014] A fastening mechanism is provided on the bottom plate, and is used to fix heavy components in the box body to the bottom plate.

[0015] Preferably, two mounting frame assemblies are provided, and the two mounting frame assemblies are symmetrically arranged on both sides of the box.

[0016] Preferably, it also includes:

[0017] A reinforcing plate is provided between the mounting frame assembly and the box body.

[0018] Preferably, at least two groups of the fastening mechanisms are provided, and the fastening mechanisms are arranged at intervals on the bottom plate.

[0019] Preferably, the fastening mechanism comprises:

[0020] a first mounting hole provided on the bottom plate, and a second mounting hole provided on the heavy component for use in conjunction with the first mounting hole;

[0021] a fastening bolt for passing through the first mounting hole and the second mounting hole;

[0022] A locking nut is provided on the outer side of the base plate and is used in conjunction with the fastening bolt.

[0023] Preferably, the fastening mechanism further comprises:

[0024] A mounting seat is arranged on the outer side of the base plate and fixedly connected to the base plate. A mounting hole is provided on the mounting seat. The inner diameter of the mounting hole is larger than the outer diameter of the locking nut.

[0025] Preferably, the fastening mechanism further comprises:

[0026] A sealing member is provided on a side of the mounting base away from the base plate and is fixedly connected to the mounting base.

[0027] Preferably, it also includes:

[0028] A reinforcing rib structure is provided on the box body.

[0029] Preferably, the box further includes:

[0030] A box edge provided between the box body and the top plate;

[0031] A base disposed between the box body and the bottom plate;

[0032] The base and the box body, the base and the bottom plate, and the box edge and the box body are all fixedly connected.

[0033] A transformer comprises the transformer oil tank described in any one of the above items.

[0034] The transformer oil tank provided by the present invention comprises a housing body, wherein the housing body is a hollow box-shaped structure formed by bending an aluminum alloy plate. Due to the low density and relatively high strength of aluminum alloy, the housing body overcomes the size limitations of aluminum alloy raw materials and can meet the requirements of lightweight and miniaturized vehicle transformers. Compared with carbon steel materials in the prior art, the transformer oil tank provided by the present invention is more suitable for lightweight and miniaturized vehicle transformers. The transformer oil tank provided by the present invention also comprises a top plate and a bottom plate, wherein the top plate is fixedly connected to the top of the housing body, and the bottom plate is fixedly connected to the bottom of the housing body. The housing body, the top plate, and the bottom plate form the basic framework of the transformer oil tank. Furthermore, a mounting frame assembly and a fastening mechanism are provided, wherein the mounting frame assembly is fixedly disposed on the outside of the housing body and is used to secure the housing body to the vehicle body, thereby enabling the housing body to be suspended from the vehicle body. The fastening mechanism is disposed on the bottom plate and is used to secure heavy components within the housing body to the bottom plate, thereby preventing the heavy components within the housing body from shaking within the housing body. It can be seen that compared with the prior art, the transformer oil tank in the embodiment of the present invention is made of aluminum alloy material, which is more suitable for lightweight and miniaturized vehicle transformers; the box body is bent through a process to reduce welds, thereby improving structural strength and welding process level.

[0035] The present invention also provides a transformer, including the above-mentioned transformer oil tank, which can also meet the technical effects of the requirements of lightweight and miniaturization of vehicle transformers. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] FIG1 is a schematic structural diagram of a transformer oil tank provided by an embodiment of the present invention;

[0038] FIG2 is a bottom view of FIG1 ;

[0039] FIG3 is a partial enlarged view of FIG2;

[0040] FIG4 is a top view of FIG1 ;

[0041] FIG5 is a left side view of FIG1;

[0042] FIG6 is a cross-sectional view of FIG1;

[0043] FIG7 is a partial enlarged view of FIG6 .

[0044] Figure numerals: 1. Box body; 2. Top plate; 3. Bottom plate; 4. Mounting frame assembly; 5. Fastening mechanism; 6. Heavy component; 7. Reinforcement plate; 8. Reinforcement rib structure; 91. Box edge; 92. Base. DETAILED DESCRIPTION

[0045] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0046] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0049] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0050] The embodiments of the present invention are written in a progressive manner.

[0051] As shown in Figures 1 to 7, an embodiment of the present invention provides a transformer oil tank, comprising: a tank body 1, which is a hollow box-shaped structure formed by bending an aluminum alloy plate; a top plate 2 fixedly connected to the top of the tank body 1; a bottom plate 3 fixedly connected to the bottom of the tank body 1; a mounting frame assembly 4 fixedly arranged on the outside of the tank body 1; and a fastening mechanism 5 provided on the bottom plate 3, the fastening mechanism 5 being used to secure heavy components 6 in the tank body 1 to the bottom plate 3.

[0052] Currently, the commonly used material for train transformer oil tanks is low-carbon steel, which has a density about three times that of aluminum alloy. This type of transformer oil tank is heavy, which is not conducive to lightweighting of the entire vehicle.

[0053] As vehicles pursue higher speeds, employ high-impedance transformers, and develop lightweight components, aluminum alloy's light density and high conductivity are crucial material properties for transformer product innovation. Aluminum alloy products are widely used across various manufacturing industries, and aluminum alloy materials have matured in key technical areas such as product design, raw material properties, forming processes, and welding. While foreign countries have developed the technical capabilities to develop aluminum alloy fuel tanks for rail traction transformers, with successful trials on some high-speed EMUs, the complexity and high cost of manufacturing aluminum alloy tanks have hindered their mass adoption. Consequently, existing rail transformer tanks are typically constructed of mild steel.

[0054] The transformer oil tank provided by the present invention comprises a housing 1, wherein the housing 1 is a hollow box-shaped structure formed by bending an aluminum alloy plate. Due to the low density and relatively high strength of aluminum alloy, the size range of aluminum alloy raw materials is exceeded, and the requirements for lightweight and miniaturized vehicle transformers are met. Compared with carbon steel materials in the prior art, it is more suitable for lightweight and miniaturized vehicle transformers. The transformer oil tank provided by the present invention also comprises a top plate 2 and a bottom plate 3. The top plate 2 is fixedly connected to the top of the housing 1, and the bottom plate 3 is fixedly connected to the bottom of the housing 1. The housing 1, the top plate 2, and the bottom plate 3 form the basic framework of the transformer oil tank. Secondly, a mounting frame assembly 4 and a fastening mechanism 5 are also provided. The mounting frame assembly 4 is fixedly disposed on the outside of the housing 1 and is used to secure the housing to the vehicle body, thereby suspending the housing from the vehicle body. The fastening mechanism 5 is disposed on the bottom plate 3 and is used to secure heavy components 6 within the housing to the bottom plate 3, thereby preventing the heavy components 6 from shaking within the housing. It can be seen that compared with the prior art, the transformer oil tank in the embodiment of the present invention is made of aluminum alloy material, which is more suitable for lightweight and miniaturized vehicle transformers; the box body 1 uses a bending process to reduce welds, improve structural strength and welding process level.

[0055] It should be emphasized that, first, the box body in the embodiment of the present invention is made of aluminum alloy material, which is light in weight and improves the overall level of lightweight transformer; secondly, the box body 1 in the embodiment of the present invention is formed by bending an aluminum alloy plate, breaking through the limitation of the bending and forming process of aluminum alloy raw materials within a certain size range, and the head and tail sides of the box body 1 are fixedly connected by welding, which can reduce welds and improve the strength of the structure and the welding process level.

[0056] Furthermore, the front and rear sides of the box body 1 in the embodiment of the present invention are fixedly connected by tailor welding. The application of tailor welding converts the T-shaped weld into a butt weld, thereby improving the strength of the key stress-bearing position of the structure.

[0057] Furthermore, as one of the implementation methods, the bottom plate 3 and the box body 1, and the box body 1 and the mounting frame assembly 4 in the embodiment of the present invention are fixedly connected by welding. Furthermore, the bottom plate 3, the box body 1, the box edge 91, and the base 92 are overlapped, that is, the overlapping positions are partially overlapped, and welding is performed on both sides of the overlapping positions to improve the quality and strength of the welds.

[0058] In the above structure, the structure of the top plate 2 in the embodiment of the present invention can be diversified. Specifically, the top plate 2 in the embodiment of the present invention includes but is not limited to any one of a structural form with an electrical interface, a flat plate without an electrical interface, or a reinforced rib cover structure.

[0059] Furthermore, the mounting frame assembly 4 in the embodiment of the present invention is fixed to the outer side of the box body 1 by welding, and the mounting frame assembly 4 is fixed to the vehicle body to achieve a suspension connection between the fuel tank and the vehicle body.

[0060] In the above structure, as one embodiment, two sets of mounting bracket assemblies 4 are provided in the embodiment of the present invention, and the two sets of mounting bracket assemblies 4 are symmetrically arranged on both sides of the box body 1. The two sides of the box body 1 are respectively mounted to the two sides of the vehicle body through the mounting bracket assemblies 4, which makes the installation of the box body 1 more secure and the force more evenly distributed.

[0061] Furthermore, as one embodiment, a set of mounting bracket assemblies 4 in the embodiment of the present invention is provided with at least one mounting bracket. When a set of mounting bracket assemblies 4 is provided with at least two mounting brackets, the mounting brackets are spaced apart along the width direction of the box body 1. More specifically, the structure of the mounting brackets in the embodiment of the present invention includes, but is not limited to, a U-shape, a T-shape, or an L-shape.

[0062] Furthermore, embodiments of the present invention provide a specific structure for a U-shaped mounting bracket. Specifically, the bracket comprises an upper channel-shaped profile and two lower vertical plates, thereby reducing the size of the profile required for the bracket. Furthermore, reinforcing plates 7 are used at the connection between the horizontal plate and the box body 1, and at the connection between the mounting plate and the box body 1, to enhance the connection strength.

[0063] Furthermore, the mounting plate is provided with connection holes, and the width of the mounting plate gradually decreases along the direction from the top plate 2 to the bottom plate 3 .

[0064] Furthermore, in order to further improve the heavy-duty bearing capacity between the mounting frame assembly 4 and the box body 1, the transformer oil tank in the embodiment of the present invention also includes a reinforcing plate 7, which is arranged between the mounting frame assembly 4 and the box body 1, and the connection strength is higher.

[0065] In order to fix the heavy components 6 in the box body, as one preferred embodiment, at least two groups of fastening mechanisms 5 are provided in the embodiment of the present invention, and the fastening mechanisms 5 are arranged on the bottom plate 3 at intervals.

[0066] The heavy component 6 in the prior art is wedged on the inside of the oil tank in all directions to achieve constrained fixation. This structural design is complex and the process operation is relatively cumbersome. In order to further simplify the structure of the oil tank, as one of the preferred embodiments, as shown in Figure 7, the fastening mechanism 5 in the embodiment of the present invention includes a first mounting hole, a fastening bolt and a locking nut, wherein the first mounting hole is provided on the base plate 3, and a second mounting hole is provided on the heavy component 6. The first mounting hole and the second mounting hole are used in conjunction with each other, and the fastening bolt passes through the first mounting hole and the second mounting hole and is fixed by the locking nut. The heavy component 6 is fixed by fastening bolts, and its structure is simpler, and it prevents the heavy component 6 from shaking in the box.

[0067] In the above structure, as one of the embodiments, the fastening mechanism 5 in the embodiment of the present invention includes a mounting seat, which is arranged on the outer side of the base plate 3 away from the top plate 2, and is fixedly connected to the base plate 3. A mounting hole is provided on the mounting seat, and the aperture of the mounting hole is not less than the outer diameter of the locking nut.

[0068] Furthermore, to prevent cooling oil leakage in transformers containing cooling oil, the fastening mechanism 5 in one embodiment of the present invention further includes a sealing member disposed on a side of the mounting base away from the base plate 3 and fixedly connected to the mounting base. The sealing member is fixedly connected to the mounting base to prevent the risk of cooling oil leakage caused by the fastening bolts penetrating the box.

[0069] Furthermore, the sealing element is made of rubber material.

[0070] Furthermore, to increase the rigidity and strength required to withstand a certain pressure inside the transformer tank, the transformer tank in the embodiment of the present invention further includes, as a preferred embodiment, a reinforcing rib structure 8 disposed on the tank body. Specifically, the reinforcing rib structure 8 is arranged around the tank body, and the reinforcing rib structure 8 includes, but is not limited to, reinforcing ribs or reinforcing plates. Furthermore, the reinforcing ribs are preferably U-shaped.

[0071] In the above structure, as one of the preferred embodiments, the box body in the embodiment of the present invention also includes a box edge 91 and a base 92, wherein the box edge 91 is arranged between the box body 1 and the top plate 2, and the base is arranged between the box body 1 and the bottom plate 3, and the base and the box body 1, the base and the bottom plate 3, and the box edge 91 and the box body 1 are all fixedly connected.

[0072] In existing large-scale rail products, aluminum alloys are often used in profile designs. This requires the development of specialized molds, which increases the costs of specialized molds and the procurement of raw materials for the profiles. These high manufacturing costs limit mass production. The structure of the box edge 91, base 92, and mounting bracket assembly 4 in the present embodiment helps reduce the costs of developing profile molds and lowering the costs of purchasing profiles.

[0073] In the above structure, as a more specific implementation, the cross-sections of the box edge 91 and the base 92 in the embodiment of the present invention are specifically U-shaped or L-shaped.

[0074] The base 92 and the box body 1, and the base 92 and the bottom plate 3 are specifically overlapped, and the weld strength is improved by welding at two locations. The box edge 91 and the box body 1, and the box body 1, the base 92 and the bottom plate 3 are welded together to form the transformer oil tank frame.

[0075] The present invention also provides a transformer including the above-mentioned transformer oil tank, which can also meet the requirements of lightweight and miniaturized vehicle transformers.

[0076] Furthermore, the transformer in the embodiment of the present invention is specifically any one of a traction transformer, an isolation transformer, and an auxiliary transformer.

[0077] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer oil tank, characterized in that, it includes: a box body (1), the box body (1) being a hollow box-shaped structure formed by bending an aluminum alloy plate; a top plate (2) fixedly connected to the top of the box body (1); a bottom plate (3) fixedly connected to the bottom of the box body (1); a mounting frame assembly (4) fixedly arranged on the outside of the box body (1); a fastening mechanism (5) arranged on the bottom plate (3), the fastening mechanism (5) being used to fix a heavy component (6) inside the box body to the bottom plate (3).

2. The transformer oil tank according to claim 1, characterized in that, there are two mounting frame assemblies (4), and the two mounting frame assemblies (4) are symmetrically arranged on both sides of the box body.

3. The transformer oil tank according to claim 2, characterized in that, it further includes: a reinforcing plate (7) arranged between the mounting frame assembly (4) and the box body.

4. The transformer oil tank according to any one of claims 1 to 3, characterized in that, at least two groups of the fastening mechanisms (5) are provided, and the fastening mechanisms (5) are spaced apart on the bottom plate (3).

5. The transformer oil tank according to claim 4, characterized in that, the fastening mechanism (5) includes: a first mounting hole arranged on the bottom plate (3), and a second mounting hole cooperating with the first mounting hole is arranged on the heavy component (6); a fastening bolt for passing through the first mounting hole and the second mounting hole; a locking nut arranged on the outside of the bottom plate (3) and cooperating with the fastening bolt.

6. The transformer oil tank according to claim 5, characterized in that, the fastening mechanism (5) further includes: a mounting seat fixedly connected to the bottom plate (3) on the outside of the bottom plate (3), an installation hole is arranged on the mounting seat, and the inner diameter of the installation hole is larger than the outer diameter of the locking nut.

7. The transformer oil tank according to claim 6, characterized in that, the fastening mechanism (5) further includes: a sealing member fixedly connected to the mounting seat on the side of the mounting seat away from the bottom plate (3).

8. The transformer oil tank according to any one of claims 1 to 3, 5 to 7, characterized in that, it further includes: a reinforcing rib structure (8) arranged on the box body.

9. The transformer oil tank according to any one of claims 1 to 3, 5 to 7, characterized in that, the box body further includes: a box edge (91) arranged between the box body (1) and the top plate (2); a base (92) arranged between the box body (1) and the bottom plate (3); the base (92) is fixedly connected to the box body (1), the base (92) is fixedly connected to the bottom plate (3), and the box edge (91) is fixedly connected to the box body (1).

10. A transformer, characterized in that, it includes the transformer oil tank according to any one of claims 1 to 9.

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