A transformer oil tank capable of withstanding high pressure

Abstract

This utility model discloses a transformer tank capable of withstanding high pressure in the field of transformer technology. It includes a tank frame, with corrugated sheets on all four outer surfaces of the frame. An inner reinforcing structure is provided inside the tank frame and fixedly connected to the corrugated sheets. An outer reinforcing structure is also provided outside the tank frame and fixedly connected to the corrugated sheets. The inner reinforcing structure effectively fixes the corrugated sheets, limiting their overall deformation and outward movement when the tank is subjected to high positive pressure. The outer reinforcing structure both fixes and strengthens the corrugated sheets, limiting their deformation and outward movement, and effectively controlling severe expansion and deformation of the corrugated sheets under internal pressure. This gives the three-phase oil-immersed distribution transformer tank high pressure resistance and crack resistance.

Description

Technical Field

[0001] This utility model relates to a transformer oil tank capable of withstanding high pressure in the field of transformer technology. Background Technology

[0002] Three-phase oil-immersed distribution transformers are widely used in State Grid's complete transformer substations, many of which are installed in densely populated areas such as cities and towns. When a short-circuit fault occurs during the operation of an oil-immersed distribution transformer, high pressure will be generated inside the tank. When the internal pressure of the transformer tank exceeds the limit it can withstand, it will lead to permanent deformation of the tank, or even local cracking. When the tank of a faulty transformer cracks, it may cause hot oil spraying or even flame explosion, seriously endangering the lives and property of people in the surrounding area. To avoid such personal injury accidents, State Grid users have now put forward high pressure resistance and crack resistance requirements for oil-immersed distribution transformer tanks to prevent such accidents. Ordinary three-phase oil-immersed distribution transformers in China, due to the lack of effective measures and special structures in the tank, can only meet the requirement of 20-25 kPa internal positive pressure, and cannot meet the 103 kPa internal positive pressure requirement put forward by State Grid users. Therefore, they do not have the high pressure resistance and crack resistance performance, and there is a certain safety risk when operating in densely populated areas. Utility Model Content

[0003] The purpose of this invention is to provide a transformer tank that can withstand high pressure, enabling the three-phase oil-immersed distribution transformer tank to have high pressure resistance and crack resistance.

[0004] To achieve the above objectives, this utility model provides a transformer tank capable of withstanding high pressure, including a tank frame, with several corrugated sheets on all four outer sides of the tank frame, an inner reinforcing structure inside the tank frame and fixedly connected to the corrugated sheets, and an outer reinforcing structure outside the tank frame and fixedly connected to the corrugated sheets.

[0005] Compared with the prior art, the beneficial effects of this utility model are that the internal reinforcing structure effectively fixes the corrugated sheet, limiting the overall deformation and outward movement of the corrugated sheet when the oil tank is subjected to high positive pressure; the external reinforcing structure fixes and strengthens the corrugated sheet, limiting the deformation and outward movement of the corrugated sheet and effectively controlling the severe expansion and deformation of the corrugated sheet when the oil tank is under pressure, so that the oil tank of the three-phase oil-immersed distribution transformer has high pressure resistance and crack resistance.

[0006] As a further improvement of this utility model, the internal reinforcing structure includes vertical angle steel and horizontal reinforcing plates. One vertical angle steel is set at each of the four opposite corners inside the tank frame, and one horizontal reinforcing plate is set on each of the four sides inside the tank frame. The two ends of the horizontal reinforcing plates are welded to the vertical angle steel, and the upper and lower edges of the horizontal reinforcing plates are welded to the inner end face of the corrugated sheet.

[0007] By installing a reinforcing plate with good mechanical strength and a certain thickness around the inside of the fuel tank, and welding the reinforcing plate to the vertical angle steel of the fuel tank frame, and spot welding the corrugated sheet to the upper and lower sides of the reinforcing plate to reinforce it piece by piece, the corrugated sheet is effectively fixed, limiting the overall deformation and outward movement of the corrugated sheet when the fuel tank is subjected to high positive pressure.

[0008] As a further improvement of this utility model, the external reinforcing structure includes reinforcing ribs, which are respectively arranged on the vertical surface, upper horizontal surface and lower horizontal surface of the corrugated sheet, and each reinforcing rib forms a closed ring structure around the perimeter of the fuel tank frame.

[0009] By setting multiple reinforcing ribs on the outside of the oil tank, respectively arranged on the vertical surface and the upper and lower horizontal surfaces of the corrugated sheet, and each reinforcing rib connecting to form a closed loop around the oil tank, the corrugated sheet is mechanically fixed and reinforced on the outside of the oil tank, limiting the deformation and outward movement of the corrugated sheet.

[0010] As a further improvement of this utility model, the external reinforcing structure also includes a comb-shaped anti-deformation plate. The comb-shaped anti-deformation plate has a bottom opening structure and is inserted downward from the middle position above each group of corrugated sheets. The comb bars of the comb-shaped anti-deformation plate are located at the center position of the interval between the corrugated sheets. The upper and lower edges of the comb-shaped anti-deformation plate are welded to the reinforcing ribs at the corresponding positions.

[0011] By installing comb-shaped anti-deformation plates on the outside of the oil tank and inserting them into the middle of the corrugated sheets installed around the oil tank, the severe expansion and deformation of the corrugated sheets when the oil tank is under pressure can be effectively controlled. In addition to effectively limiting the deformation and expansion of the corrugated sheets, they can also serve as part of the heat dissipation device to improve the heat dissipation capacity of the oil tank.

[0012] As a further improvement of this utility model, the transverse reinforcing plate is located at the middle of the coil height, and its width is the same as the coil height.

[0013] In this way, by spot welding with the corrugated sheet for reinforcement, it can also act as an oil baffle to reduce oil flow turbulence and effectively improve the efficiency of oil flow heat dissipation. Attached Figure Description

[0014] Figure 1 This is a side view of the fuel tank of this utility model.

[0015] Figure 2 This is an external front view of the fuel tank of this utility model.

[0016] Figure 3 This is a top view of the fuel tank of this utility model.

[0017] Figure 4 This utility model relates to a comb-shaped anti-deformation plate.

[0018] The components include: 1. Angle steel; 2. Horizontal reinforcing plate; 3. Comb-shaped anti-deformation plate; 4. Reinforcing rib; 5. Corrugated sheet; and 6. Fuel tank frame. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-4 A transformer tank capable of withstanding high pressure is shown, comprising a tank frame 6, with a plurality of corrugated sheets 5 on each of the four outer sides of the tank frame 6, an inner reinforcing structure inside the tank frame 6 and fixedly connected to the corrugated sheets 5, and an outer reinforcing structure outside the tank frame 6 and fixedly connected to the corrugated sheets 5.

[0020] The internal reinforcing structure includes vertical angle steel 1 and transverse reinforcing plates 2. One vertical angle steel 1 is set at each of the four diagonal corners inside the tank frame 6, and one transverse reinforcing plate 2 is set on each of the four sides inside the tank frame 6. The two ends of the transverse reinforcing plates 2 are welded to the vertical angle steel 1, and the outer side of the transverse reinforcing plates 2 is welded to the inner end face of the corrugated sheet 5. The transverse reinforcing plates 2 are located at the middle of the coil height, and the width is the height of the coil.

[0021] The external reinforcing structure includes reinforcing ribs 4, which are arranged on the vertical, upper horizontal, and lower horizontal surfaces of the corrugated sheets 5. Each reinforcing rib 4 forms a closed ring around the perimeter of the fuel tank frame 6. The external reinforcing structure also includes comb-shaped anti-deformation plates 3, which have an open bottom and are inserted downwards from the middle of the upper part of each group of corrugated sheets 5. The combs of the comb-shaped anti-deformation plates 3 are located at the center of the intervals between the corrugated sheets 5. The upper and lower edges of the comb-shaped anti-deformation plates 3 are welded to the corresponding reinforcing ribs 4.

[0022] In this utility model, the fuel tank frame 6 is provided with internal and external reinforcing structures. The internal reinforcement is reinforced by welding the reinforcing plate to the angle steel 1 and corrugated sheet 5 of the fuel tank frame 6 respectively. The external reinforcement is reinforced by welding the reinforcing ribs 4 and comb-shaped anti-deformation plates 3 to the corrugated sheet 5 respectively. Multiple reinforcing ribs 4 are arranged on the vertical surface and the upper and lower horizontal surfaces of the corrugated sheet 5 respectively. The comb-shaped anti-deformation plates 3 are inserted into the middle of the corrugated sheet 5 around the fuel tank.

[0023] The internal reinforcing plates of the fuel tank are butt-welded to the angle steel 1 of the fuel tank frame 6 at both ends, and are reinforced by point-welding to the corrugated sheets 5 on the upper and lower sides. External reinforcing ribs 4 are arranged on the vertical plane of the corrugated sheets 5 at the top, middle, and bottom, and one is arranged at the middle of the upper and lower horizontal planes. Each reinforcing rib 4 on the four sides of the fuel tank should be connected by straight lines to form a complete circle.

[0024] The comb-shaped anti-deformation plate 3 on the outside of the fuel tank is inserted from top to bottom onto the corrugated sheets 5 on the four sides of the fuel tank, and is located outside the reinforcing rib 4 in the middle of the horizontal plane of the corrugated sheets 5. The upper and lower edges of the comb-shaped anti-deformation plate 3 are welded to the middle reinforcing rib 4.

[0025] By installing a transverse reinforcing plate 2 with good mechanical strength and a certain thickness around the inside of the fuel tank, and welding the transverse reinforcing plate 2 to the vertical angle steel 1 at the diagonal inside the fuel tank frame 6, and spot welding the transverse reinforcing plate 2 to the corrugated sheet 5 piece by piece on the upper and lower sides, the corrugated sheet 5 is effectively fixed, limiting the overall deformation and outward movement of the corrugated sheet 5 when the fuel tank is subjected to high positive pressure. By installing multiple reinforcing ribs 4 on the outside of the fuel tank frame 6, respectively arranged on the vertical surface and the upper and lower horizontal surfaces of the corrugated sheet 5, each reinforcing rib 4 is connected to form a closed loop around the perimeter of the fuel tank frame 6, thereby achieving mechanical fixation and reinforcement of the corrugated sheet 5 on the outside of the fuel tank frame 6, limiting the deformation and outward movement of the corrugated sheet 5. By installing comb-shaped anti-deformation plates 3 on the outside of the fuel tank frame 6 and inserting them into the middle of the corrugated sheet 5 installed around the perimeter of the fuel tank, the severe expansion and deformation of the corrugated sheet 5 when the fuel tank is under pressure is effectively controlled.

[0026] This invention significantly enhances the mechanical strength of the fuel tank and improves its resistance to internal pressure through the welding arrangement of various parts inside and outside the tank. It has the advantages of simple structure, easy manufacturing, and reliable performance.

[0027] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A transformer tank capable of withstanding high pressure, comprising a tank frame, wherein the four outer surfaces of the tank frame are provided with a plurality of corrugated sheets, characterized in that: The fuel tank frame has an internal reinforcing structure that is fixedly connected to the corrugated sheet, and an external reinforcing structure that is fixedly connected to the corrugated sheet.

2. A transformer tank capable of withstanding high pressure according to claim 1, characterized in that: The internal reinforcing structure includes vertical angle steel and horizontal reinforcing plates. One vertical angle steel is installed at each of the four opposite corners inside the tank frame, and one horizontal reinforcing plate is installed on each of the four sides inside the tank frame. The two ends of the horizontal reinforcing plates are welded to the vertical angle steel, and the upper and lower edges of the horizontal reinforcing plates are welded to the inner end faces of the corrugated sheets.

3. A high pressure capable transformer tank according to claim 2, characterized in that: The external reinforcing structure includes reinforcing ribs, which are arranged on the vertical, upper horizontal and lower horizontal surfaces of the corrugated sheet. Each reinforcing rib forms a closed ring structure around the perimeter of the fuel tank frame.

4. A high pressure capable transformer tank according to claim 3, characterized in that: The external reinforcing structure also includes a comb-shaped anti-deformation plate, which has an open bottom and is inserted downward from the middle of the top of each group of corrugated sheets. The comb bars of the comb-shaped anti-deformation plate are located in the center of the corrugated sheet intervals, and the upper and lower edges of the comb-shaped anti-deformation plate are welded to the corresponding reinforcing ribs.

5. A high pressure capable transformer tank according to claim 4, characterized in that: The transverse reinforcing plate is located in the middle of the coil height, and its width is the same as the coil height.

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