Transformer oil tank structure for enhancing sudden short resistance of transformer

Abstract

The utility model relates to a transformer oil tank structure for enhancing sudden short resistance of a transformer, which comprises a tank body (1), the tank body (1) comprises an oil tank wall, a tank edge (2), a tank bottom (3) and a corrugated sheet (4), and the corrugated sheet (4) and the oil tank wall are welded into a whole, so that a welding seam outside the corrugated sheet (4) is not stressed any more, the phenomenon of cracking of the welding seam is avoided, the mechanical strength of the oil tank is improved, and the service life of the oil tank is prolonged. The oil leakage risk of the oil tank is reduced; the positions of welding points of the oil tank and the corrugated sheets (4) are improved, so that the corrugated sheets and the tank wall of the oil tank form a whole, external welding is not stressed any more, and the mechanical strength of the oil tank is integrally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution transformers, in particular to a transformer oil tank structure capable of enhancing the transformer's anti-sudden short circuit capability. Background Art

[0002] The transformer oil tank is filled with iron core and winding and is filled with transformer oil, so that the iron core and winding are immersed in the oil. The transformer oil tank is mainly used as a special heat dissipation device for small and medium-sized power transformer equipment. The structure of the corrugated oil tank is simple. It is assembled by the box edge, corrugated sheet and box bottom, and then welded into shape. The corrugated oil tank adopts the method of corrugated sheet heat dissipation, which has the characteristics of smooth reflux, no dead corner for oil collection, not easy to store oil stains and beautiful appearance. The strength of the oil tank plays a key role in the stability of product operation. The corrugated sheet welding point of the conventional transformer oil tank is on the outside of the transformer oil tank. When the transformer is short-circuited, the welding point of the oil tank heat sink is prone to cracking, causing the transformer oil tank to leak oil and cause transformer quality accidents.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN 208622551 U discloses a high overload transformer oil tank structure, including a base, a frame fixed on the base, and a heat sink extending to the outside of the frame fixed on the four sides of the frame, the heat sink including a plurality of parallel corrugated sheets; the frame is used to place the transformer; the top of two adjacent corrugated sheets is provided with a first connecting piece for connecting the two corrugated sheets, and the bottom of two adjacent corrugated sheets is provided with a second connecting piece for connecting the two corrugated sheets. This transformer oil tank structure can enhance the structural strength of the transformer oil tank. However, the corrugated sheets of the transformer oil tank structure are connected to the box body through multiple connecting pieces, and its structure is complicated.

[0004] Another example Figure 4-6 The structure of the transformer oil tank in the prior art is shown. The transformer oil tank in the prior art comprises a box body (1), a box edge (2), a box bottom (3) and a corrugated sheet (4). The corrugated sheet (4) is fully welded to the outside of the box body (1); the corrugated sheet (4) is not welded to the inside of the box body (1). When the transformer is short-circuited, the welding part of the oil tank heat sink is prone to cracking, causing the transformer oil tank to leak oil and cause transformer quality accidents. Utility Model Content

[0005] In order to solve the above technical defects in the prior art, the purpose of the utility model is to provide a transformer oil tank structure that enhances the transformer's anti-short circuit capability, so as to solve the problem that the welding parts of the oil tank heat sink in the prior art are prone to cracking.

[0006] According to the utility model, a transformer oil tank structure for enhancing the anti-short break capability of a transformer includes a tank body, wherein the tank body includes a tank wall, a tank edge, a tank bottom and a corrugated sheet, wherein the corrugated sheet is welded to the tank wall as a whole, so that the welding seam outside the corrugated sheet is no longer subjected to stress, thereby avoiding the phenomenon of welding seam cracking, thereby improving the mechanical strength of the oil tank and reducing the risk of oil leakage in the oil tank; the position of the welding point between the oil tank and the corrugated sheet is improved, so that the corrugated sheet and the tank wall form a whole, and the external welding is no longer subjected to stress, thereby improving the mechanical strength of the oil tank as a whole.

[0007] In any of the above schemes, it is preferred that the corrugated sheet is made of 1.2 mm or 1.5 mm high-quality carbon structural steel plate, and the mechanical strength of the oil tank is constrained by the corrugated sheet.

[0008] In any of the above schemes, it is preferred that the corrugated sheet is welded to the box edge and the box bottom as a whole by external full welding.

[0009] In any of the above schemes, preferably, the intersections of the upper and lower edges of the corrugated sheet with the box edge and the box bottom are welded together by spot welding to strengthen the welds.

[0010] In any of the above schemes, it is preferred that the upper and lower ends of the corrugated sheet are provided with two welding points for welding to the inner walls of the tank edge and the tank bottom, so that the corrugated sheet and the inner wall of the tank wall form a whole, and the external welding is no longer subjected to stress, thereby improving the mechanical strength of the tank as a whole.

[0011] In summary, the transformer oil tank structure for enhancing the transformer's anti-short break capability of the utility model has the following advantages: the corrugated sheet is welded to the oil tank wall as a whole, so that the welding seam outside the corrugated sheet is no longer subjected to stress, avoiding the phenomenon of welding seam cracking, thereby improving the mechanical strength of the oil tank; the upper and lower ends of the corrugated sheet are provided with two welding points welded to the inner wall of the box edge and the box bottom, so that the corrugated sheet and the inner wall of the oil tank wall form a whole, and the external welding is no longer subjected to stress, thereby improving the mechanical strength of the oil tank as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic structural diagram of a preferred embodiment of a transformer oil tank structure for enhancing the transformer's anti-short break capability.

[0013] Figure 2 The utility model is a transformer oil tank structure for enhancing the transformer's anti-shortcoming capability. Figure 1 Side view of the illustrated embodiment.

[0014] Figure 3 The utility model is a transformer oil tank structure for enhancing the transformer's anti-shortcoming capability. Figure 1 Schematic diagram of the internal structure of the embodiment shown.

[0015] Figure 4 It is a structural schematic diagram of a transformer oil tank in the prior art.

[0016] Figure 5 for Figure 4 A side view of a transformer oil tank in the prior art is shown.

[0017] Figure 6 for Figure 4 The figure shows a schematic diagram of the internal structure of a transformer oil tank in the prior art.

[0018] Description of Figure Numbers:

[0019] Box body 1, box edge 2, box bottom 3, corrugated sheet 4. DETAILED DESCRIPTION

[0020] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or use. The following further describes the specific implementation of the transformer oil tank structure for enhancing the transformer's anti-short-out capability in conjunction with the drawings of the specification.

[0021] like Figure 1-Figure 3 As shown, a schematic diagram of the structure of a transformer oil tank structure for enhancing the anti-short-break capability of a transformer according to the utility model. The purpose of the utility model is to provide a transformer oil tank structure for enhancing the anti-short-break capability of a transformer, comprising a box body 1, the box body 1 comprising an oil tank wall, a box edge 2, a box bottom 3 and a corrugated sheet 4, the corrugated sheet 4 is welded to the oil tank wall as a whole, so that the welding seam outside the corrugated sheet 4 is no longer subjected to stress, avoiding the phenomenon of cracking of the welding seam, thereby improving the mechanical strength of the oil tank and reducing the risk of oil leakage in the oil tank; the position of the welding point between the oil tank and the corrugated sheet 4 is improved, so that the corrugated sheet and the oil tank wall form a whole, and the external welding is no longer subjected to stress, thereby improving the mechanical strength of the oil tank as a whole.

[0022] In this embodiment, the corrugated sheet 4 is made of 1.2 mm or 1.5 mm high-quality carbon structural steel plate, and the mechanical strength of the oil tank is constrained by the corrugated sheet.

[0023] In this embodiment, the corrugated sheet 4 is welded to the box edge 2 and the box bottom 3 by external full welding.

[0024] In this embodiment, the intersections of the upper and lower edges of the corrugated sheet 4 with the box edge 2 and the box bottom 3 are spot welded together to strengthen the welds.

[0025] In this embodiment, two welding points 5 are provided at the upper and lower ends of the corrugated sheet 4 to be welded to the inner walls of the box edge 2 and the box bottom 3 .

[0026] It is not difficult for those skilled in the art to understand that the utility model of a transformer oil tank structure for enhancing the anti-short short capability of a transformer includes any combination of the parts in this specification. Due to space limitations and to make the specification concise, these combinations are not introduced in detail one by one here, but after reading this specification, the scope of the utility model consisting of any combination of the parts constituting this specification is self-evident.

Claims

1. A transformer oil tank structure for enhancing the transformer's anti-short circuit capability, comprising a tank body (1), the tank body (1) comprising an oil tank wall, a tank edge (2), a tank bottom (3) and a corrugated sheet (4), characterized in that: The corrugated sheet (4) is welded to the oil tank wall as a whole, so that the welding seam outside the corrugated sheet (4) is no longer subjected to stress, thus avoiding the phenomenon of cracking of the welding seam, thereby improving the mechanical strength of the oil tank and reducing the risk of oil leakage from the oil tank; the position of the welding point between the oil tank and the corrugated sheet (4) is improved, so that the corrugated sheet and the oil tank wall form a whole, and the external welding is no longer subjected to stress, thereby improving the mechanical strength of the oil tank as a whole.

2. The transformer oil tank structure for enhancing the transformer's anti-short circuit capability according to claim 1, characterized in that: The corrugated sheet (4) is made of a 1.2 mm or 1.5 mm high-quality carbon structural steel plate, and the mechanical strength of the oil tank is restricted by the corrugated sheet.

3. The transformer oil tank structure for enhancing the transformer's anti-short circuit capability according to claim 1, characterized in that: The corrugated sheet (4) is welded into one with the box edge (2) and the box bottom (3) by external full welding.

4. The transformer oil tank structure for enhancing the transformer's anti-short circuit capability according to claim 1, characterized in that: The intersections of the upper and lower edges of the corrugated sheet (4) with the box edge (2) and the box bottom (3) are welded together by spot welding to strengthen the welded joints.

5. The transformer oil tank structure for enhancing the transformer's anti-short circuit capability as claimed in claim 4, characterized in that: Two welding points (5) are arranged at the upper and lower ends of the corrugated sheet (4) for welding with the inner walls of the box edge (2) and the box bottom (3).

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