A flexible transformer adaptive oil tank

Abstract

This invention relates to the field of transformer technology and discloses a flexible DC transformer adaptable tank, including a tank body and a tank cover disposed on the upper end of the tank body. The transformer body is placed inside the tank body. A first tank edge is provided on the upper edge of the surface of the tank body, and a second tank edge is provided on the lower edge of the surface of the tank cover. The second tank edge is connected to the first tank edge. Reinforcing members are provided on the surface of the tank body to enhance the strength of the tank body and the tank cover. This invention provides a cylindrical vertically arranged arc sidewall on the long axis side of the tank wall, and the geometric center of the arc is coaxial with the center of the outer circle of the transformer body. Combined with the design that the radius of the arc is larger than the radius of the outer circle of the transformer body, a uniform and sufficient insulation gap is formed between the transformer body and the tank wall, effectively avoiding the electric field concentration problem caused by traditional planar tank walls and significantly improving the insulation margin.

Description

Technical Field

[0001] This invention belongs to the field of transformer technology, specifically relating to a flexible DC transformer adaptable oil tank. Background Technology

[0002] With my country's economic development, the demand for electricity has also increased dramatically. Due to the uneven distribution of power resources and load centers in my country, the country has accelerated the construction of ultra-high voltage transmission lines in recent years, especially flexible direct current (DC) transmission lines. As a core component of flexible DC transmission systems, flexible DC transformers play a crucial role.

[0003] Existing traditional oil tank structures have obvious limitations. For example, the tank walls are mostly designed in a planar manner, which makes it difficult to adapt to the uniformity requirements of insulation distance under high voltage levels and easily leads to insufficient local insulation margin. Furthermore, the existing oil tank reinforcement structures are mostly arranged in a decentralized manner, lacking an overall coordinated force-bearing mechanism, resulting in insufficient overall rigidity of the tank body. Under complex loads, it is prone to deformation and cracking, affecting sealing performance and equipment life. Summary of the Invention

[0004] The purpose of this invention is to provide a transformer-compatible oil tank with a simple structure and reasonable design in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: This invention provides a flexible DC transformer adaptable tank, including a tank body and a tank cover disposed on the upper end of the tank body. The transformer body is placed inside the tank body. A first tank edge is provided on the upper edge of the surface of the tank body, and a second tank edge is provided on the lower edge of the surface of the tank cover. The second tank edge is connected to the first tank edge. A reinforcing member is provided on the surface of the tank body to enhance the strength of the tank body and the tank cover.

[0006] As a further optimization of the present invention, the housing includes a base, two sets of long-axis side walls and two sets of short-axis side walls. The two sets of long-axis side walls are disposed on both sides of the base along its length and are fixedly connected to the base. The two sets of short-axis side walls are symmetrically disposed on both sides of the base along its width and are fixedly connected to the base. The two ends of the long-axis side walls perpendicular to the base are respectively connected to the ends of the corresponding short side plates, so that the long-axis side walls, the two sets of short-axis side walls and the base together enclose an accommodating space with an upper opening.

[0007] As a further optimization of the present invention, the reinforcing member includes a long-axis reinforcing rib and a short-axis reinforcing rib. The long-axis reinforcing rib is connected to the surface of the long-axis side box wall, and the short-axis reinforcing rib is connected to the surface of the short-axis side box wall. The long-axis reinforcing rib on the long-axis side box wall and the short-axis reinforcing rib on the short-axis side box wall are connected end to end.

[0008] As a further optimization of the present invention, the long axis side box wall is provided with an arc side wall, which is formed by protruding from the surface of the long axis side box wall towards the side away from the inside of the box, and the arc side wall is arranged vertically in a cylindrical shape.

[0009] As a further optimization of the present invention, the center of the arc geometry of the arc sidewall is coaxial with the center of the outer circle of the vessel body.

[0010] As a further optimization of the present invention, the reinforcing member further includes vertical reinforcing iron and horizontal reinforcing iron. Multiple sets of vertical reinforcing iron are spaced apart in the horizontal direction of the long axis side box wall, and multiple sets of vertical reinforcing iron are fixedly connected to the outer surface of the long axis side box wall. Multiple sets of horizontal reinforcing iron are spaced apart in the horizontal direction of the box cover, and multiple sets of horizontal reinforcing iron are fixedly connected to the top surface of the box cover.

[0011] As a further optimization of the present invention, the outer surface of the arc sidewall is connected with a long axis side reinforcing rib, and multiple sets of the long axis side reinforcing ribs are arranged at intervals in the vertical direction of the arc sidewall, and the left and right ends of the long axis side reinforcing ribs are connected to two adjacent sets of vertical reinforcing irons.

[0012] As a further optimization of the present invention, the lower end of the arc-shaped sidewall is connected to a sealing plate, and the upper end of the arc-shaped sidewall is connected to the first box edge.

[0013] As a further optimization of the present invention, each set of transverse reinforcing irons is connected to a pair of side reinforcing ribs at both ends, and the end of the side reinforcing ribs away from the transverse reinforcing irons is connected to the edge of the second box.

[0014] As a further optimization of the present invention, the inner side of the side reinforcing rib is attached to the surface of the box cover.

[0015] The beneficial effects of the present invention are as follows: The present invention provides a cylindrical vertically arranged arc sidewall on the long axis side wall, and the geometric center of the arc is coaxial with the center of the outer circle of the device body. Combined with the design that the radius of the arc is larger than the radius of the outer circle of the device body, a uniform and sufficient insulation gap is formed between the device body and the box wall, which effectively avoids the problem of electric field concentration caused by traditional planar box walls and greatly improves the insulation margin. This invention constructs a comprehensive stress support system through a multi-dimensional structural reinforcement design. Specifically, the long-axis reinforcing ribs and short-axis reinforcing ribs are connected end to end to form a closed reinforcing frame surrounding the box body, effectively dispersing the pressure and vibration load on the box wall. The vertical reinforcing irons and the short-axis reinforcing ribs are interwoven to enhance the vertical load-bearing capacity and lateral stability of the long-axis box wall and the arc-shaped side wall, preventing the box wall from bulging, denting, or bending deformation. The lateral reinforcing irons of the box cover cooperate with the arched side reinforcing ribs to greatly improve the box cover's resistance to denting and the structural stability of the connection points. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial top view of the box body of the present invention; Figure 3 This is a side sectional view of the box lid of the present invention.

[0017] In the diagram: 1. Box body; 2. First box edge; 3. Box cover; 4. Second box edge; 5. Long axis side box wall; 6. Long axis side reinforcing rib; 7. Short axis side box wall; 8. Short axis side reinforcing rib; 9. Arc side wall; 10. Vertical reinforcing iron; 11. Body; 12. Long axis side reinforcing rib; 13. Sealing plate; 14. Horizontal reinforcing iron; 15. Side reinforcing rib. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example 1

[0020] refer to Figure 1 The structure shown is that of a flexible DC transformer adaptable tank, including a tank body 1 and a tank cover 3 disposed on the upper end of the tank body 1. The transformer body 11 is placed inside the tank body 1. A first tank edge 2 is provided on the upper edge of the surface of the tank body 1, and a second tank edge 4 is provided on the lower edge of the surface of the tank cover 3. The second tank edge 4 is connected to the first tank edge 2. The surface of the tank body 1 is provided with reinforcing members to enhance the strength of the tank body 1 and the tank cover 3.

[0021] The box cover 3 has a groove-shaped cross-section (e.g., Figure 3 (As shown).

[0022] Specifically, the second tank edge 4 is welded to the upper surface of the first tank edge 2. The first tank edge 2 serves as the connection interface between the tank body 1 and the tank cover 3, providing a welding reference surface for the second tank edge 4. The oil tank is sealed by welding with the second tank edge 4. The setting of the second tank edge 4 can also distribute the force on the tank cover 3 and avoid damage caused by stress concentration at the connection.

[0023] Furthermore, the housing 1 includes a base, two sets of long-axis side walls 5 and two sets of short-axis side walls 7. The two sets of long-axis side walls 5 are disposed on both sides of the base along its length and are fixedly connected to the base. The two sets of short-axis side walls 7 are symmetrically disposed on both sides of the base along its width and are fixedly connected to the base. The two ends of the long-axis side walls 5 perpendicular to the base are respectively connected to the ends of the corresponding short side plates, so that the long-axis side walls 5, the two sets of short-axis side walls 7 and the base together enclose an accommodating space with an upper opening.

[0024] It should be noted that the transformer body 11 (referring to the core component of the transformer consisting of the iron core and windings) is placed inside the enclosure 1 through the opening at the top of the accommodating space.

[0025] Furthermore, the reinforcing member includes a long-axis reinforcing rib 6 and a short-axis reinforcing rib 8. The long-axis reinforcing rib 6 is connected to the surface of the long-axis side box wall 5, and the short-axis reinforcing rib 8 is connected to the surface of the short-axis side box wall 7. The long-axis reinforcing rib 6 on the long-axis side box wall 5 and the short-axis reinforcing rib 8 on the short-axis side box wall 7 are connected end to end.

[0026] It should be noted that the long axis side reinforcing rib 6 and the short axis side reinforcing rib 8 are connected end to end to form a reinforcing frame around the tank body 1, which effectively disperses the pressure and vibration load on the tank body 1 wall, prevents the tank body 1 wall from deforming, and ensures that the oil tank meets the mechanical strength requirements during transportation and operation.

[0027] refer to Figure 1 and Figure 2 As shown in the partial structure, the long axis side box wall 5 is provided with an arc side wall 9, which is formed by protruding from the surface of the long axis side box wall 5 toward the side away from the interior of the box body 1. The arc side wall 9 is arranged vertically in a cylindrical shape.

[0028] It should be noted that the arc sidewall 9 meets the insulation distance requirements of the internal charged body. The center of its arc geometry is coaxial with the center of the outer circle of the body 11, and the radius is larger than the radius of the outer circle of the body 11. This setting can ensure that the insulation gap between the body 11 and the inner wall of the box 1 is uniform and sufficient, which is suitable for high voltage level requirements. At the same time, the cylindrical vertical arrangement structure can distribute the pressure and improve the deformation resistance of the box wall of the box 1.

[0029] Furthermore, the center of the arc geometry of the arc sidewall 9 is coaxial with the center of the outer circle of the body 11.

[0030] It should be noted that the radius of the arc sidewall 9 is greater than the radius of the outer circle of the body 11.

[0031] Furthermore, the reinforcing member also includes vertical reinforcing iron 10 and horizontal reinforcing iron 14. Multiple sets of vertical reinforcing iron 10 are spaced apart in the horizontal direction of the long axis side box wall 5, and multiple sets of vertical reinforcing iron 10 are fixedly connected to the outer surface of the long axis side box wall 5. Multiple sets of horizontal reinforcing iron 14 are spaced apart in the horizontal direction of the box cover 3, and multiple sets of horizontal reinforcing iron 14 are fixedly connected to the top surface of the box cover 3.

[0032] Both the vertical reinforcing iron 10 and the horizontal reinforcing iron 14 are groove-shaped.

[0033] It should be noted that the vertical reinforcing iron 10 is used to strengthen the vertical bearing capacity of the long axis side box wall 5. Its spacing in the horizontal direction of the long axis side box wall 5 provides vertical support for the long axis side box wall 5 and disperses the vertical load, so as to prevent the long axis side box wall 5 from bending and deforming due to excessive vertical force.

[0034] Furthermore, the outer surface of the arc-shaped sidewall 9 is connected to a long axis side reinforcing rib 12. Multiple sets of long axis side reinforcing ribs 12 are arranged at intervals in the vertical direction of the arc-shaped sidewall 9. The left and right ends of the long axis side reinforcing ribs 12 are connected to two adjacent sets of vertical reinforcing irons 10.

[0035] It should be noted that the setting of the short reinforcing ribs 12 on the long axis side can enhance the lateral stability of the arc sidewall 9, disperse the radial pressure borne by the arc sidewall 9, and prevent it from bulging or denting.

[0036] Furthermore, the lower end of the arc-shaped sidewall 9 is connected to a sealing plate 13, and the upper end of the arc-shaped sidewall 9 is connected to the first box edge 2.

[0037] It should be noted that the sealing plate 13 is used to close the lower part of the arc-shaped side wall 9, forming a complete bottom support structure of the box 1, while enhancing the structural stability of the lower part of the arc-shaped side wall 9 and preventing local deformation when subjected to force.

[0038] Furthermore, each of the transverse reinforcing irons 14 is connected to a pair of side reinforcing ribs 15 at both ends, and the end of the side reinforcing rib 15 away from the transverse reinforcing iron 14 is connected to the second box edge 4.

[0039] It should be noted that the transverse reinforcing iron 14 is used to strengthen the top load-bearing capacity of the box cover 3, distribute the external load borne by the box cover 3, and prevent the top of the box cover 3 from denting due to concentrated force.

[0040] Furthermore, the inner side of the side reinforcing rib 15 is attached to the surface of the box cover 3.

[0041] It should be noted that the side reinforcing ribs 15 are arched to improve the structural strength of the box cover 3. They utilize the force characteristics of the arch to disperse the bending stress of the box cover 3, while enhancing the stability of the connection between the box cover 3 and the second box edge 4, thus preventing cracking at the connection.

[0042] The adaptable tank structure of this invention is mainly designed for high-voltage, large-capacity flexible DC transformers. Specifically, a vertical cylindrical arc sidewall is provided on the long axis side wall of the tank body to meet the insulation distance requirements of the live parts inside the tank. Furthermore, horizontal and transverse continuous reinforcing ribs connected end-to-end are provided on the long axis and short axis side walls of the tank body to effectively enhance the mechanical strength of the tank. Therefore, the adaptable tank structure for flexible DC transformers proposed in this invention is applicable to flexible DC transformers of various voltage levels and capacities. Strength calculations show that it meets all mechanical strength requirements with a large margin.

[0043] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A flexible DC transformer adaptable oil tank, characterized in that, It includes a box body (1) and a box cover (3) set on the upper end of the box body (1). The body (11) is placed inside the box body (1). A first box edge (2) is provided on the upper edge of the surface of the box body (1). A second box edge (4) is provided on the lower edge of the surface of the box cover (3). The second box edge (4) is connected to the first box edge (2). A reinforcing member is provided on the surface of the box body (1) to strengthen the strength of the box body (1) and the box cover (3).

2. The adaptive oil tank for a flexible DC transformer according to claim 1, characterized in that: The box body (1) includes a base, two sets of long-axis side boxes (5) and two sets of short-axis side boxes (7). The two sets of long-axis side boxes (5) are located on both sides of the base along its length and are fixedly connected to the base. The two sets of short-axis side boxes (7) are symmetrically located on both sides of the base along its width and are fixedly connected to the base. The two ends of the long-axis side boxes (5) perpendicular to the base are respectively connected to the ends of the corresponding short side plates, so that the long-axis side boxes (5), the two sets of short-axis side boxes (7) and the base together enclose an upper opening accommodating space.

3. The adaptive oil tank for a flexible DC transformer according to claim 2, characterized in that: The reinforcing member includes a long-axis reinforcing rib (6) and a short-axis reinforcing rib (8). The long-axis reinforcing rib (6) is connected to the surface of the long-axis side box wall (5), and the short-axis reinforcing rib (8) is connected to the surface of the short-axis side box wall (7). The long-axis reinforcing rib (6) on the long-axis side box wall (5) and the short-axis reinforcing rib (8) on the short-axis side box wall (7) are connected end to end.

4. The adaptive oil tank for a flexible DC transformer according to claim 2, characterized in that: The long axis side wall (5) is provided with an arc side wall (9), which is formed by protruding from the surface of the long axis side wall (5) towards the side away from the interior of the box (1). The arc side wall (9) is arranged vertically in a cylindrical shape.

5. The adaptive oil tank for a flexible DC transformer according to claim 4, characterized in that: The center of the arc geometry of the arc sidewall (9) is coaxial with the center of the outer circle of the vessel body (11).

6. The adaptive oil tank for a flexible DC transformer according to claim 3, characterized in that: The reinforcing member also includes vertical reinforcing iron (10) and horizontal reinforcing iron (14). The vertical reinforcing iron (10) is arranged in multiple sets at intervals in the horizontal direction of the long axis side box wall (5). The multiple sets of vertical reinforcing iron (10) are fixedly connected to the outer surface of the long axis side box wall (5). The horizontal reinforcing iron (14) is arranged in multiple sets at intervals in the horizontal direction of the box cover (3). The multiple sets of horizontal reinforcing iron (14) are fixedly connected to the top surface of the box cover (3).

7. The adaptive oil tank for a flexible DC transformer according to claim 4, characterized in that: The outer surface of the arc sidewall (9) is connected to a long axis side reinforcing rib (12). The long axis side reinforcing rib (12) is arranged in multiple sets at intervals in the vertical direction of the arc sidewall (9). The left and right ends of the long axis side reinforcing rib (12) are connected to two adjacent sets of vertical reinforcing irons (10).

8. The adaptive oil tank for a flexible DC transformer according to claim 4, characterized in that: The lower end of the arc-shaped sidewall (9) is connected to a sealing plate (13), and the upper end of the arc-shaped sidewall (9) is connected to the first box edge (2).

9. The adaptive oil tank for a flexible DC transformer according to claim 6, characterized in that: Each set of transverse reinforcing irons (14) is connected to a pair of side reinforcing ribs (15) at both ends, and the end of the side reinforcing rib (15) away from the transverse reinforcing iron (14) is connected to the second box edge (4).

10. A flexible DC transformer adaptable oil tank according to claim 9, characterized in that: The inner side of the side reinforcing rib (15) is attached to the surface of the box cover (3).

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