Transformer oil tank

Abstract

The utility model belongs to transformer technical field discloses a kind of transformer oil tank. Transformer oil tank includes box, box includes two first box walls of opposite arrangement and two second box walls of opposite arrangement, at least one first box wall includes first flat plate, second flat plate and the inclined plate of connecting first flat plate and second flat plate;Second box wall includes main tank plate and spliced tank plate. The first flanging of main tank plate is integrally welded with the side wall of first flat plate, the second flanging of main tank plate is integrally welded with the side wall of second flat plate, and the position of main tank plate and inclined plate is provided with notch;Spliced tank plate is welded in first notch and integrally welded with the side wall of inclined plate. The difficulty of tailor-welding process is reduced in the transformer oil tank.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a transformer oil tank. Background Technology

[0002] In traditional manufacturing processes, transformer tanks, especially regular rectangular tanks, are often manufactured using a butt-welding method. This process typically involves bending one side of the shorter tank wall using a large bending machine to create a flange; this flange is then precisely aligned with the edge of the adjacent longer tank wall, and butt-welded at the joint.

[0003] However, with the diversification of transformer product designs, irregularly shaped tank designs, such as bulging transformer tanks, have emerged to meet specific electrical performance requirements. The cross-sectional profile of such tanks is typically a unique shape, wider at the top and narrower at the bottom. This means that the short tank walls are not simple rectangles but include transitional bevels. This short tank wall structure is difficult to stably position and clamp on large bending machines, making it impossible to complete the flanging forming process efficiently and accurately using automated equipment. If manual bending is used instead, there are many problems such as high operational difficulty, poor forming consistency, and low production efficiency. Furthermore, uneven stress can easily cause surface damage to the sheet metal or uncontrollable plastic deformation, ultimately affecting the overall dimensions and appearance quality of the tank.

[0004] Therefore, there is an urgent need to propose a transformer oil tank to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a transformer oil tank that reduces the difficulty of the welding process and improves the assembly efficiency and quality of the transformer oil tank.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A transformer tank includes a tank body, the tank body including two first tank walls and two second tank walls arranged opposite to each other, at least one of the first tank walls including a first plate, a second plate and an inclined plate connecting the first plate and the second plate;

[0008] The second box wall includes:

[0009] The main box plate has its first flange welded to the side wall of the first flat plate, and its second flange welded to the side wall of the second flat plate. A notch is provided at the position opposite to the inclined plate in the main box plate.

[0010] The splicing box panel is welded to the notch and integrally welded to the side wall of the inclined plate.

[0011] Optionally, the splicing panel includes a splicing body and a splicing flange connected to each other. The splicing body is welded to the notch, and the three adjacent sidewalls of the splicing flange are respectively welded to the first flange, the inclined plate and the second flange.

[0012] Optionally, an arc-shaped transition portion is provided between the splicing body and the splicing flange, one side of the arc-shaped transition portion is smoothly connected to the splicing body, and the other side of the arc-shaped transition portion is smoothly connected to the splicing flange.

[0013] Optionally, the transformer oil tank further includes a tank cover disposed on the tank body, the tank cover comprising:

[0014] The box cover body includes an arched portion extending along the length direction of the box cover and straight portions located on both sides of the arched portion along the width direction of the box cover.

[0015] The lid and edge are located on both sides of the lid body along its length.

[0016] Baffles are provided on both sides of the arched portion along its length, and the baffles seal the end openings of the arched portion.

[0017] Optionally, a clearance groove is provided at the position opposite to the arched portion of the box cover, and part of the baffle is disposed in the clearance groove.

[0018] Optionally, the arched portion is formed by an upward protrusion along the axis of the box cover body in the length direction.

[0019] Optionally, the transformer tank further includes a tank cover disposed on the tank body, the tank cover having a pressure relief port for installing a pressure relief valve, and the inner wall of the tank cover having an annular air baffle at the outer edge of the pressure relief port.

[0020] Optionally, the housing is provided with an inspection hole, and a sealing element is provided at the inspection hole. The sealing element is detachably connected to the housing, and a portion of the sealing plug of the sealing element is disposed inside the inspection hole.

[0021] Optionally, the outer wall of the housing is provided with an annular connecting portion at the outer edge of the inspection hole; the sealing component includes a cover plate and a plug disposed on the cover plate, the cover plate surrounds the periphery of the plug and is sealed to the annular connecting portion, and the plug is disposed inside the annular connecting portion and inside the inspection hole.

[0022] Optionally, the transformer tank further includes a tank cover disposed on the tank body, the tank cover having a lifting seat, the top of the lifting seat having a sealing cover, the sealing cover having an exhaust port, and the exhaust port being connected to one end of an exhaust connecting pipe.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a transformer oil tank, including a tank body, which includes two first tank walls and two second tank walls arranged opposite to each other. The second tank walls include a main tank plate and splicing tank plates. In this structure, the inclined area corresponding to the inclined plate of the first tank wall is designed as a notch, and then the notch is filled by splicing tank plates in a "patch" style. This ensures that the flanging of the main tank plate is limited to the straight edge portion. This design avoids bending processing of non-straight edge areas, simplifies operation, and allows bending processing to be performed on a large bending machine, improving processing efficiency and quality compared to manual bending. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the transformer oil tank from one perspective provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the transformer oil tank from another perspective provided by an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the first box wall provided in an embodiment of the present utility model;

[0029] Figure 4 This is an exploded view of the second box wall provided in an embodiment of the present invention;

[0030] Figure 5 yes Figure 1 Enlarged view at point A;

[0031] Figure 6 This is a schematic diagram of the box lid from one perspective provided in an embodiment of the present utility model;

[0032] Figure 7 yes Figure 6 Enlarged view at point B;

[0033] Figure 8 This is a partial schematic diagram from one perspective of the box cover after the baffle is removed, according to an embodiment of the present utility model.

[0034] Figure 9This is a partial schematic diagram from another perspective of the box cover after the baffle is removed, according to an embodiment of the present utility model.

[0035] Figure 10 This is a sectional view of the assembly drawing of the box cover edge and the box body edge provided in this embodiment of the utility model;

[0036] Figure 11 This is a partial schematic diagram of the box lid provided in an embodiment of the present utility model;

[0037] Figure 12 This is a partial schematic diagram of the cross-sectional view of the box body provided in this embodiment of the utility model;

[0038] Figure 13 This is a schematic diagram of the structure of the lifting seat provided in an embodiment of this utility model.

[0039] In the picture:

[0040] 100. Box body; 110. First box wall; 111. First flat plate; 112. Second flat plate; 113. Sloping plate; 120. Second box wall; 121. Main box panel; 1211. First flange; 1212. Second flange; 1213. Notch; 122. Splicing box panel; 1221. Splicing flange; 1222. Splicing body; 1223. Arc-shaped transition section; 123. Inspection hole; 124. Annular connection section; 130. Sealing component; 131. Cover plate; 132. Plug; 140. Box edge; 141. Steel plate; 142. High-temperature resistant fiber rope; 143. Limiting square steel; 144. Sealing gasket; 145. Limiting plate;

[0041] 200. Box lid; 210. Box lid body; 211. Arched part; 2111. End opening; 212. Straight part; 220. Box lid edge; 221. Clearance groove; 230. Baffle; 240. Pressure relief port; 241. Annular air baffle; 250. Elevating seat; 251. Sealing cover; 252. Exhaust pipe. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0046] This embodiment provides a transformer oil tank that reduces the difficulty of the welding process and improves the assembly efficiency and quality of the transformer oil tank.

[0047] like Figures 1-5 As shown, the transformer tank includes a tank body 100, which includes two first tank walls 110 and two second tank walls 120 arranged opposite to each other. It is understood that the lengths of the first tank walls 110 and the second tank walls 120 may be different. Optionally, in one possible embodiment, the first tank wall 110 is a long tank wall and the second tank wall 120 is a short tank wall.

[0048] At least one of the first box walls 110 includes a first flat plate 111, a second flat plate 112, and an inclined plate 113 connecting the first flat plate 111 and the second flat plate 112. This arrangement gives the box body 100 a "bulge" structure.

[0049] The second box wall 120 includes a main box panel 121 and a splicing box panel 122. Specifically, the first flange 1211 of the main box panel 121 is welded integrally to the side wall of the first flat plate 111. The first flange 1211 can be formed by bending the straight edges of the main box panel 121 opposite to the first flat plate 111. The second flange 1212 of the main box panel 121 is welded integrally to the side wall of the second flat plate 112. The second flange 1212 can be formed by bending the straight edges of the main box panel 121 opposite to the second flat plate 112. A notch 1213 is provided at the position opposite to the inclined plate 113 on the main box panel 121. The splicing box panel 122 is welded to the notch 1213 and integrally welded to the side wall of the inclined plate 113.

[0050] In one possible embodiment, the first flange 1211 is welded to the side wall of the first flat plate 111 by a welding method. The second flange 1212 is welded to the side wall of the second flat plate 112 by a welding method. The splicing box plate 122 is also welded to the side walls of the notch 1213 and the inclined plate 113 by a welding method.

[0051] The transformer tank provided in this embodiment designs a notch 1213 in the inclined area of ​​the second tank wall 120 that originally corresponded to the inclined plate 113 of the first tank wall 110. The notch 1213 is then filled with a patch-like splicing tank plate 122, so that the flanging processing of the main tank plate 121 is limited to the straight edge. This design avoids bending processing of the non-straight edge area, simplifies the operation, and the bending processing can be carried out on a large bending machine, which improves the processing efficiency and quality compared with manual bending.

[0052] Further, see also Figure 4 and Figure 5 The splicing panel 122 includes an interconnected splicing body 1222 and a splicing flange 1221. The splicing body 1222 is welded to the notch 1213, and the three adjacent sidewalls of the splicing flange 1221 are welded to the first flange 1211, the sidewall of the inclined plate 113, and the second flange 1212, respectively. This splicing panel 122, through the interconnected splicing body 1222 and splicing flange 1221, avoids welding at bends, which reduces welding difficulty and improves the performance of the enclosure 100.

[0053] Optionally, see [link to relevant documentation] Figure 4 and Figure 5An arc-shaped transition section 1223 is provided between the splicing body 1222 and the splicing flange 1221. One side of the arc-shaped transition section 1223 is smoothly connected to the splicing body 1222, and the other side of the arc-shaped transition section 1223 is smoothly connected to the splicing flange 1221. By providing the arc-shaped transition section 1223, the second box wall 120 can smoothly transition between the splicing body 1222 and the splicing flange 1221, reducing the sharp corners inside the box body 100.

[0054] Optionally, the splicing panel 122 can be formed by bending to form the splicing body 1222, the arc-shaped transition part 1223, and the splicing flange 1221.

[0055] To facilitate understanding, the method of assembling the first box wall 110 and the second box wall 120, which have the first flat plate 111, the second flat plate 112, and the inclined plate 113, will be briefly described below:

[0056] First, the second box wall 120 is pre-processed using a bending machine. Specifically, the first flange 1211 and the second flange 1212 are bent out at the two straight edges of the main box plate 121.

[0057] Then, the main box panel 121 is connected to the first box wall 110. Specifically, the first flange 1211 is connected to the side wall of the first flat plate 111 of the first box wall 110, the second flange 1212 is connected to the side wall of the second flat plate 112 of the first box wall 110, and the notch 1213 of the main box panel 121 corresponds to the inclined plate 113 of the first box wall 110.

[0058] Then, the first flange 1211 is welded to the side wall of the first plate 111, and the second flange 1212 is welded to the side wall of the second plate 112.

[0059] Then, the main assembly 1222 is welded to the notch 1213;

[0060] Finally, the splicing flange 1221 is welded to the first flange 1211, the second flange 1212 and the inclined plate 113 as a whole.

[0061] Furthermore, such as 1, Figure 2 , Figures 6-8 As shown, the transformer tank also includes a tank cover 200 disposed on the tank body 100. The tank cover 200 includes a tank cover body 210, a tank cover edge 220, and a baffle 230.

[0062] The tank cover body 210 includes an arched portion 211 extending along the length of the tank cover 200 and straight portions 212 located on both sides of the arched portion 211 along the width of the tank cover 200. Tank cover flanges 220 are provided on both sides of the tank cover body 210 along its length. Baffles 230 are provided on both sides of the arched portion 211 along its length, sealing the end openings 2111 of the arched portion 211. By providing the arched portion 211, the mechanical strength of the transformer tank is improved, enabling it to effectively resist internal oil pressure increases and external vacuum pressure. Furthermore, it facilitates the accumulation of gas inside the transformer tank. By providing the arched portion 211 only in the middle region of the tank cover body 210, while keeping the other areas of the tank cover body 210 flat, only additional tank cover flanges 220 are needed on both sides of the length of the tank cover body 210, resulting in a simpler structure compared to a design where the entire tank cover 200 is arched. By using baffle 230 to block the end opening 2111 of the arched part 211, the sealing performance of the box cover 200 is ensured, and the structure of the box cover 200 is simplified, making it easier to process.

[0063] Optionally, such as Figure 9 As shown, a clearance groove 221 is provided at the position opposite to the arched portion 211 on the edge 220 of the box cover, and part of the baffle 230 is disposed within the clearance groove 221. By providing the clearance groove 221 on the edge 220 of the box cover to avoid the baffle 230, on the one hand, the sealing effect of the baffle 230 on the end opening 2111 of the arched portion 211 is improved; on the other hand, the baffle 230 can be fixed to a certain extent, which facilitates the assembly of the baffle 230 and improves the fixing effect of the baffle 230.

[0064] Alternatively, in one possible embodiment, the baffle 230 is connected to the lid body 210 and the lid edge 220 by welding.

[0065] Optionally, in one possible embodiment, the arch of the arched portion 211 is located on the central axis extending along the length of the cover body 210, that is, the arched portion 211 protrudes upward at the axis along the length of the cover body 210. This arrangement facilitates processing and allows gas from all parts of the box 100 to be evenly gathered at the arched position.

[0066] Optionally, such as Figure 10As shown, a steel plate 141, a high-temperature resistant fiber rope 142, a limiting square steel 143, a sealing gasket 144, and a limiting plate 145 are provided between the cover edge 220 and the body edge 140. The steel plate 141 is fully welded to both the cover edge 220 and the body edge 140, increasing the weld area and improving sealing. The high-temperature resistant fiber rope 142 is positioned on the side of the steel plate 141 closest to the interior of the body 100 to prevent heat transfer during welding into the transformer tank, protecting the sealing gasket 144. Two limiting square steels 143 are provided, spaced apart on the side of the high-temperature resistant fiber rope 142 closest to the interior of the body 100, with the sealing gasket 144 positioned between the two limiting square steels 143. The limiting square steels 143 restrict the position of the sealing gasket 144, preventing displacement. The limiting plate 145 restricts the movement of the cover 200 when the transformer is evacuated.

[0067] Furthermore, such as Figure 11 As shown, the tank cover 200 is provided with a pressure relief port 240, which is used to install a pressure relief valve. An annular air baffle 241 is provided on the inner wall of the tank cover 200 at the outer edge of the pressure relief port 240. By providing the annular air baffle 241, gas generated in the transformer oil can be prevented from entering the pressure relief port 240, allowing the gas generated in the transformer oil to better collect at the arched portion 211 and eventually be discharged.

[0068] Alternatively, the annular air baffle 241 can be fixed to the cover 200 by welding. The welding process is simple and easy to process.

[0069] Furthermore, such as Figure 1 and Figure 12 As shown, the housing 100 is provided with an inspection hole 123, which allows operators to enter the housing 100 or to access the housing 100 with their hands for internal maintenance. Optionally, in this embodiment, the inspection hole 123 is located on the second housing wall 120. A sealing member 130 is provided at the inspection hole 123, which is detachably connected to the housing 100, and a portion of the sealing plug of the sealing member 130 is disposed within the inspection hole 123. By partially sealing the sealing member 130 within the inspection hole 123, gas cannot accumulate within the inspection hole 123, thereby preventing insulation failures caused by gas discharge.

[0070] Optionally, see [link to relevant documentation] Figure 12In one possible embodiment, the outer wall of the housing 100 is provided with an annular connecting portion 124 at the outer edge of the access hole 123. The sealing member 130 includes a cover plate 131 and a plug 132 disposed on the cover plate 131. The cover plate 131 surrounds the periphery of the plug 132 and is sealed to the annular connecting portion 124. The plug 132 is inserted into the interior of the annular connecting portion 124 and the access hole 123. The sealing member 130 has a simple structure and is easy to assemble.

[0071] Optionally, in one possible embodiment, the material of the plug 132 is insulating wood. In other possible embodiments, the material of the plug 132 may also be other materials, as long as the material does not react with the transformer oil inside the housing 100.

[0072] Optionally, a sealing ring can be provided between the cover plate 131 and the annular connecting part 124, and the cover plate 131 and the annular connecting part 124 can be fixed by bolt connection. This configuration has a simple structure, is easy to assemble, and has better sealing performance.

[0073] Alternatively, the annular connection 124 can be a flange.

[0074] Furthermore, such as Figure 13 As shown, the transformer tank also includes a tank cover 200 mounted on the tank body 100, and a lifting seat 250 is provided on the tank cover 200. A sealing cover 251 is provided on the top of the lifting seat 250, and an exhaust port is provided on the sealing cover 251, which is connected to one end of an exhaust connecting pipe 252. By placing the exhaust port on the sealing cover 251 at the top of the lifting seat 250, compared with the prior art where the exhaust port is located on the side of the lifting seat 250, all the gas inside the lifting seat 250 can be discharged, resulting in more thorough venting.

[0075] Optionally, in one possible embodiment, a first flange may be provided on the top of the riser 250, and a sealing cover 251 may be provided as a second flange, with the second flange being sealed to the first flange.

[0076] Understandably, the exhaust manifold 252 eventually connects to the transformer's oil conservator.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transformer oil tank, characterized in that, Includes a housing (100), the housing (100) including two first housing walls (110) arranged opposite to each other and two second housing walls (120) arranged opposite to each other; At least one of the first box walls (110) includes a first plate (111), a second plate (112), and an inclined plate (113) connecting the first plate (111) and the second plate (112); The second box wall (120) includes: The main box plate (121) has its first flange (1211) welded to the side wall of the first flat plate (111), and its second flange (1212) welded to the side wall of the second flat plate (112). A notch (1213) is provided at the position opposite to the inclined plate (113) of the main box plate (121). The splicing box panel (122) is welded to the notch (1213) and integrally welded to the side wall of the inclined plate (113).

2. The transformer oil tank according to claim 1, characterized in that, The splicing box panel (122) includes a splicing body (1222) and a splicing flange (1221) connected to each other. The splicing body (1222) is welded to the notch (1213). The three adjacent side walls of the splicing flange (1221) are welded to the first flange (1211), the side wall of the inclined plate (113) and the second flange (1212) respectively.

3. The transformer oil tank according to claim 2, characterized in that, An arc-shaped transition section (1223) is provided between the splicing body (1222) and the splicing flange (1221). One side of the arc-shaped transition section (1223) is smoothly connected to the splicing body (1222), and the other side of the arc-shaped transition section (1223) is smoothly connected to the splicing flange (1221).

4. The transformer oil tank according to claim 1, characterized in that, The transformer oil tank also includes a tank cover (200) disposed on the tank body (100), the tank cover (200) comprising: The box cover body (210) includes an arched portion (211) extending along the length direction of the box cover (200) and straight portions (212) located on both sides of the arched portion (211) along the width direction of the box cover (200). The lid edge (220) is provided on both sides of the lid body (210) along its length. Baffles (230) are provided on both sides of the arched portion (211) along its length, and the baffles (230) seal the end opening (2111) of the arched portion (211).

5. The transformer oil tank according to claim 4, characterized in that, A clearance groove (221) is provided at the position opposite to the arched part (211) of the box cover edge (220), and part of the baffle (230) is disposed in the clearance groove (221).

6. The transformer oil tank according to claim 4, characterized in that, The arched portion (211) is formed by an upward protrusion at the axis along the length direction of the box cover body (210).

7. The transformer oil tank according to any one of claims 1-6, characterized in that, The transformer oil tank also includes a tank cover (200) disposed on the tank body (100). The tank cover (200) is provided with a pressure relief port (240), which is used to install a pressure relief valve. The inner wall of the tank cover (200) is provided with an annular air baffle (241) at the outer edge of the pressure relief port (240).

8. The transformer oil tank according to any one of claims 1-6, characterized in that, The housing (100) is provided with an inspection hole (123), and a sealing element (130) is provided at the inspection hole (123). The sealing element (130) is detachably connected to the housing (100), and part of the sealing plug of the sealing element (130) is located inside the inspection hole (123).

9. The transformer oil tank according to claim 8, characterized in that, The outer wall of the housing (100) is provided with an annular connecting part (124) at the outer edge of the inspection hole (123); the sealing member (130) includes a cover plate (131) and a plug (132) disposed on the cover plate (131). The cover plate (131) surrounds the periphery of the plug (132) and is sealed to the annular connecting part (124). The plug (132) is sealed inside the annular connecting part (124) and inside the inspection hole (123).

10. The transformer oil tank according to any one of claims 1-6, characterized in that, The transformer tank also includes a tank cover (200) installed on the tank body (100). The tank cover (200) is provided with a lifting seat (250). The top of the lifting seat (250) is provided with a sealing cover (251). The sealing cover (251) is provided with an exhaust port. The exhaust port is connected to one end of the exhaust pipe (252).

Images