A new transformer tank structure
Patent Information
- Application Number
- CN202521930664.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-09-09
AI Technical Summary
[0004]针对现有技术的不足，本实用新型提供了一种新型变压器箱沿结构，解决传统变压器箱沿结构的油箱盖外围设置的一圈围栏占用油箱盖侧面安装空间，与保护罩安装空间冲突的问题
[0013]本实用新型的有益效果是：通过在油箱盖的下端面提前焊接辅助方钢以形成一体的箱盖焊接件，再利用辅助方钢与箱沿焊接，实现油箱盖与箱沿的安装，而焊接过程中形成的箱沿焊缝低于拟安装的保护罩的下端，不影响保护罩的安装。取消了传统的围栏结构，降低了油箱盖外围的焊接高度，解决了此处安装空间不足的问题，同时辅助方钢与箱沿的焊接操作更方便。另外，相比于传统的围栏结构，辅助方钢可通过增加宽度以提升密封性能，且不占用油箱盖侧面空间，这一优点传统围栏结构无法实现。另外，油箱盖侧面空间的增加，也减少了箱沿的使用限制，便于安装其他附件，增加了使用范围。
Smart Images
Figure CN224922521U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transformer technology, specifically relating to a novel transformer box edge structure. Background Technology
[0002] The tank edge of a transformer oil tank refers to the connection structure between the oil tank body and the oil tank cover, or the connection structure between the upper and lower sections of the oil tank, or the connection structure between the upper section of the bell-shaped oil tank and the bottom of the tank. Taking the connection structure between the oil tank body and the oil tank cover as an example, the joint surface between the tank edge and the oil tank cover is sealed by pressing with an oil-resistant rubber gasket.
[0003] Currently, transformer tank edge structures are divided into flanged tank edges and welded tank edges. Welded tank edges use continuous welds to connect to the tank body, offering high sealing performance and are suitable for fully sealed transformers. Existing welded tank edge structures typically have a surrounding fence around the tank cover, welding the tank edge and tank cover together as a single unit. Figure 1 As shown. This structure can meet the usage requirements of most transformers. To protect the components on the tank cover from damage, a protective cover (such as...) needs to be installed on the side of the tank cover. Figure 2 However, since the connection between the fuel tank cap and the tank rim is achieved by welding the outer edge of the fuel tank cap, and there are weld seams along the tank rim in both the welding of the edge to the fuel tank cap and the welding of the edge to the tank rim, this structure has installation space on the side of the fuel tank cap (e.g., Figure 2 The shortcomings (within the dashed line area) are that the presence of welded seams on the fence and box edge restricts the installation of the protective cover, making the existing welded box edge structure unable to meet the requirements. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a novel transformer tank edge structure, which solves the problem that the perimeter fence of the traditional transformer tank edge structure occupies the side installation space of the tank cover and conflicts with the installation space of the protective cover.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel transformer tank edge structure, comprising: a tank cover welded component and a lower tank section; the tank cover welded component includes a tank cover and an auxiliary square steel, the auxiliary square steel being welded to the lower end face of the tank cover and forming a ring around the edge of the tank cover; the lower tank section includes a tank sidewall and a tank edge welded to the outer side of the tank sidewall; the tank cover is positioned above the tank edge, and the lower end face of the auxiliary square steel contacts the upper end face of the tank edge; the outer side of the auxiliary square steel is welded to the upper end face of the tank edge to form a tank edge weld, the upper end of the tank edge weld being lower than the lower end of a protective cover installed on the side of the tank cover.
[0006] Furthermore, the vertical cross-section of the auxiliary square steel is trapezoidal, the sidewall of the auxiliary square steel is an inclined plane, the inclined plane forms an angled space with the lower end face of the fuel tank cover, and the angled space is filled with the square steel weld for welding the auxiliary square steel and the fuel tank cover.
[0007] Furthermore, the box edge weld is welded to the outer square steel weld of the auxiliary square steel.
[0008] Furthermore, a positioning and sealing assembly is provided between the fuel tank cover and the tank edge; the positioning and sealing assembly is located on the inner side of the auxiliary square steel.
[0009] Furthermore, the positioning and sealing assembly includes a sealing ring and limiting blocks disposed on the inner and outer sides of the sealing ring; the lower end face of the limiting block is welded to the upper end face of the tank edge, and the upper end face of the limiting block is in contact with the lower end face of the tank cap; the upper end face of the sealing ring is in contact with the lower end face of the tank cap, and the lower end face of the sealing ring is in contact with the upper end face of the tank edge.
[0010] Furthermore, the auxiliary square steel is at the same height as the limiting block.
[0011] Furthermore, a reinforcing rib is welded to the outer side of the tank sidewall and below the tank edge.
[0012] Furthermore, a tank cover limiting member is welded to the lower end face of the tank cover; the lower end face of the tank cover limiting member is lower than the upper end face of the tank edge, and the tank cover limiting member is located on the inner side of the tank side wall.
[0013] The beneficial effects of this utility model are as follows: By pre-welding auxiliary square steel to the lower end face of the fuel tank cover to form an integral fuel tank cover welded part, and then welding the auxiliary square steel to the tank edge, the fuel tank cover and tank edge are installed. The weld seam formed during the welding process is lower than the lower end of the protective cover to be installed, thus not affecting the installation of the protective cover. The traditional fence structure is eliminated, the welding height of the fuel tank cover's perimeter is reduced, solving the problem of insufficient installation space. At the same time, the welding operation between the auxiliary square steel and the tank edge is more convenient. Furthermore, compared to the traditional fence structure, the auxiliary square steel can improve sealing performance by increasing its width without occupying the side space of the fuel tank cover—an advantage that traditional fence structures cannot achieve. In addition, the increased side space of the fuel tank cover also reduces the usage restrictions on the tank edge, facilitating the installation of other accessories and increasing the scope of application. Attached Figure Description
[0014] Figure 1 This is a structural diagram of an existing welded box edge structure; Figure 2 A schematic diagram of a structure for installing a protective cover on the side of an existing welded tank cover structure; Figure 3 This is a schematic diagram of the structure of the novel transformer box of this utility model; Figure 4 This is a schematic diagram of the structure of the fuel tank cap of this utility model with a protective cover installed on the side.
[0015] In the diagram, 1-reinforcing rib; 2-box edge; 3-box edge weld; 41-fence; 42-auxiliary square steel; 5-limiting block; 6-sealing ring; 7-tank cover; 8-tank cover limiting component; 9-tank side wall; 10-protective cover. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0017] like Figure 3 , Figure 4 The above describes a novel transformer tank edge structure, comprising: a tank cover welded component and a lower tank section; the tank cover welded component includes a tank cover 7 and an auxiliary square steel 42, the auxiliary square steel 42 being welded to the lower end face of the tank cover 7 and forming a ring around the edge of the tank cover 7; the lower tank section includes a tank side wall 9 and a tank edge 2 welded to the outer side of the tank side wall 9; the tank cover 7 is positioned above the tank edge 2, and the lower end face of the auxiliary square steel 42 is in contact with the upper end face of the tank edge 2; the outer side of the auxiliary square steel 42 is welded to the upper end face of the tank edge 2 to form a tank edge weld 3, the upper end of which is lower than the lower end of the protective cover 10 installed on the side of the tank cover 7.
[0018] The auxiliary square steel 42 has a trapezoidal vertical cross-section, narrow at the top and wide at the bottom. Its sidewalls are inclined, forming an angled space with the lower surface of the fuel tank cap 7. This space is filled with square steel welds for welding the auxiliary square steel 42 to the fuel tank cap 7. The overall shape of the square steel welds and the vertical cross-section of the auxiliary square steel 42 is rectangular. Specifically, the outer square steel weld of the auxiliary square steel 42 is flush with the outer end face of the fuel tank cap 7. This facilitates welding the tank edge weld 3 to the outer square steel weld of the auxiliary square steel 42.
[0019] To improve the sealing effect, a positioning sealing assembly is also provided between the fuel tank cap 7 and the tank rim 2; the positioning sealing assembly is located inside the auxiliary square steel 42. The positioning sealing assembly includes a sealing ring 6 and limiting blocks 5 set on both the inner and outer sides of the sealing ring 6; the lower end face of the limiting block 5 is welded to the upper end face of the tank rim 2, and the upper end face of the limiting block 5 contacts the lower end face of the fuel tank cap 7; the upper end face of the sealing ring 6 contacts the lower end face of the fuel tank cap 7, and the lower end face of the sealing ring 6 contacts the upper end face of the tank rim 2. The sealing ring 6 is in a compressed state. After compression, its two sides are limited by the limiting blocks 5, and the height of the compressed sealing ring 6 is the same as the height of the limiting blocks 5, while the auxiliary square steel 42 is also the same as the height of the limiting blocks 5.
[0020] A reinforcing rib 1 is welded to the outer side of the tank sidewall 9 and below the tank edge 2 to enhance the structural strength of the tank edge 2. A tank cover limiting member 8 is also welded to the lower end face of the tank cover 7; the lower end face of the tank cover limiting member 8 is lower than the upper end face of the tank edge 2, and the tank cover limiting member 8 is located on the inner side of the tank sidewall 9.
[0021] By eliminating the traditional fence 41 and reducing the welding height around the fuel tank cover 7, the problem of insufficient installation space at this location was solved.
[0022] The outer side of the auxiliary square steel 42 is flush with the outer side of the fuel tank cap 7. The sealing performance can be improved by increasing the width of the auxiliary square steel 42 without taking up the side space of the fuel tank cap 7.
[0023] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. A novel transformer box edge structure, characterized in that, include: The tank cover welding component and the lower section of the fuel tank; the tank cover welding component includes a fuel tank cover and an auxiliary square steel, the auxiliary square steel is welded to the lower end face of the fuel tank cover and is arranged in a ring along the edge of the fuel tank cover; the lower section of the fuel tank includes a fuel tank side wall and a tank edge welded to the outer side of the fuel tank side wall; the fuel tank cover is placed above the tank edge, and the lower end face of the auxiliary square steel contacts the upper end face of the tank edge; the outer side of the auxiliary square steel is welded to the upper end face of the tank edge to form a tank edge weld, the upper end of the tank edge weld being lower than the lower end of the protective cover installed on the side of the fuel tank cover.
2. The novel transformer box edge structure according to claim 1, characterized in that, The vertical cross-section of the auxiliary square steel is trapezoidal, and the sidewall of the auxiliary square steel is an inclined plane. The inclined plane and the lower end face of the fuel tank cover form an angled space, and the angled space is filled with the square steel weld for welding the auxiliary square steel and the fuel tank cover.
3. The novel transformer box edge structure according to claim 2, characterized in that, The box edge weld is welded to the outer square steel weld of the auxiliary square steel.
4. The novel transformer box edge structure according to claim 1, characterized in that, A positioning and sealing assembly is also provided between the fuel tank cover and the tank edge; the positioning and sealing assembly is located on the inner side of the auxiliary square steel.
5. The novel transformer box edge structure according to claim 4, characterized in that, The positioning and sealing assembly includes a sealing ring and limiting blocks disposed on the inner and outer sides of the sealing ring; the lower end face of the limiting block is welded to the upper end face of the tank edge, and the upper end face of the limiting block is in contact with the lower end face of the tank cap; the upper end face of the sealing ring is in contact with the lower end face of the tank cap, and the lower end face of the sealing ring is in contact with the upper end face of the tank edge.
6. The novel transformer box edge structure according to claim 5, characterized in that, The auxiliary square steel is at the same height as the limiting block.
7. The novel transformer box edge structure according to claim 1, characterized in that, A reinforcing rib is welded to the outer side of the tank sidewall and below the tank edge.
8. The novel transformer box edge structure according to claim 1, characterized in that, The lower end face of the fuel tank cover is also welded with a tank cover limiting member; the lower end face of the tank cover limiting member is lower than the upper end face of the tank edge, and the tank cover limiting member is located on the inner side of the side wall of the fuel tank.