CN213905078U - Welding oil tank structure and power transformer - Google Patents
Welding oil tank structure and power transformer Download PDFInfo
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- CN213905078U CN213905078U CN202022261294.7U CN202022261294U CN213905078U CN 213905078 U CN213905078 U CN 213905078U CN 202022261294 U CN202022261294 U CN 202022261294U CN 213905078 U CN213905078 U CN 213905078U
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Abstract
The utility model discloses a welding oil tank structure, which comprises an upper oil tank and a lower oil tank, wherein a first limiting hole is formed on the edge (2) of the upper oil tank, and the first limiting hole is a through hole; the lower oil tank edge (8) is provided with a second limiting hole which is a blind hole, the position of the second limiting hole corresponds to the first limiting hole, a sealing assembly is filled between the upper oil tank edge and the lower oil tank edge, a bolt (3) penetrates through the first limiting hole and enters the second limiting hole, and the head end of the bolt is welded on the upper oil tank edge. Correspondingly, still disclose a power transformer. The welding oil tank has the advantages of firm and reliable structure, convenience in processing and capability of reducing oil leakage on the use site of the transformer.
Description
Technical Field
The utility model relates to a welding oil tank structure and contain welding oil tank structure's power transformer.
Background
In recent years, with the continuous development of domestic power equipment manufacturing technology, users have increasingly high requirements on the quality of power equipment. Aiming at the requirement that the power transformer can meet the requirements of no hanging core at the installation site and no maintenance in the operation period, and simultaneously, in order to avoid the oil leakage problem of the power transformer caused by the aging of the rubber at the edge of the tank and the heating problem of the bolts at the edge of the tank caused by larger magnetic leakage in the operation process of a high-capacity or high-voltage power transformer, more and more oil tanks of the newly-operated power transformer adopt a full-sealing welding structure.
The oil tank with a common full-sealed welding structure at present generally has the problems of complex machining process or poor welding process of a metal structural part, so that the phenomenon of field oil leakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide one kind firmly reliable, be convenient for processing, and can reduce the welding oil tank structure of the oil leakage phenomenon of transformer use scene and contain the transformer of this welding oil tank structure.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a welding oil tank structure comprises an upper oil tank and a lower oil tank, wherein a first limiting hole is formed in the upper edge of the upper oil tank, and the first limiting hole is a through hole; the lower oil tank edge is provided with a second limiting hole which is a blind hole and the position of the second limiting hole corresponds to the first limiting hole,
a sealing component is filled between the upper section oil tank edge and the lower section oil tank edge,
and a bolt penetrates through the first limiting hole and enters the second limiting hole, and the head end of the bolt is welded on the edge of the upper-section oil tank.
Optionally, the sealing assembly includes a sealing rubber, a first square steel and a second square steel, and the first square steel and the second square steel are respectively disposed on two sides of the sealing rubber.
Preferably, an asbestos rope is filled between the upper section of oil tank edge and the lower section of oil tank edge.
Preferably, the welded oil tank structure further comprises a flat steel, wherein the flat steel is fixed on the outer side of the lower oil tank edge and is positioned between the upper oil tank edge and the lower oil tank edge.
Preferably, the welded oil tank structure further comprises a limiting plate, wherein the limiting plate is fixed on the inner side of the wall of the lower oil tank, and the length of the limiting plate extends to correspond to the wall of the upper oil tank.
The utility model also provides a power transformer, it includes foretell welding oil tank structure.
The utility model discloses a welding oil tank structure is a full-sealed welding oil tank structure, because the first spacing hole on upper segment oil tank case edge is the through-hole, and the spacing hole of second on lower segment oil tank case edge is the blind hole, and the position in the spacing hole of second keeps unanimous with the position in first spacing hole, and the hole size is supporting with first spacing hole, like this when upper segment oil tank and lower segment oil tank shut the case, can follow with lower segment oil tank case edge spacing to upper segment oil tank case edge through the bolt, treat that the bolt inserts behind first spacing hole and get into the spacing hole of second, weld the head end of bolt on upper segment oil tank case edge again, the oil tank structure that forms is firm reliable, and convenient processing, thereby the processing technology degree of difficulty on oil tank case edge has been reduced. Meanwhile, as the sealing assembly is filled between the upper section oil tank edge and the lower section oil tank edge, the sealing performance between the upper section oil tank edge and the lower section oil tank edge can be well ensured, and the risk of site oil leakage is greatly reduced.
The welding oil tank structure can be commonly used in 110kV-500kV power transformers.
Drawings
FIG. 1 is a partial cross-sectional view of a welded fuel tank structure according to an embodiment of the present invention;
fig. 2 is a perspective view of fig. 1.
In the figure: 1-flat steel; 2-upper section oil tank edge; 3-a bolt; 4-asbestos cord; 5-second square steel; 6-sealing rubber; 7-first square steel; 8-lower oil tank edge; 9-a limiting plate; 10-upper section of the tank wall of the oil tank; 11-lower oil tank wall.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship such as "up" is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the indicated device or element must be provided with a specific orientation, constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The utility model discloses a welding oil tank structure, which comprises an upper oil tank and a lower oil tank, wherein the upper oil tank is provided with a first limiting hole along the upper edge, and the first limiting hole is a through hole; the lower oil tank edge is provided with a second limiting hole which is a blind hole and the position of the second limiting hole corresponds to the first limiting hole,
a sealing component is filled between the upper section oil tank edge and the lower section oil tank edge,
and a bolt penetrates through the first limiting hole and enters the second limiting hole, and the head end of the bolt is welded on the edge of the upper-section oil tank.
Correspondingly, the utility model also provides a power transformer, it includes foretell welding oil tank structure.
Example 1:
as shown in fig. 1 and 2, the embodiment discloses a welded oil tank structure, which includes an upper oil tank and a lower oil tank, wherein a first limiting hole is formed in an edge 2 of the upper oil tank, and the first limiting hole is a through hole; the lower oil tank edge 8 is provided with a second limiting hole which is a blind hole, the position of the second limiting hole corresponds to the position of the first limiting hole, the bolt 3 penetrates through the first limiting hole and enters the second limiting hole, and the head end of the bolt is welded on the upper oil tank edge 2.
The bolts 3 mainly have two functions, one is that the upper oil tank and the lower oil tank play a limiting role when the tank is closed, and the other is that the bolts play a certain fastening role aiming at the upper oil tank edge 2 and the lower oil tank edge 8.
In this embodiment, a sealing assembly is further filled between the upper-section oil tank edge 2 and the lower-section oil tank edge 8.
Optionally, the sealing assembly includes a sealing rubber 6, a first square steel 7 and a second square steel 5, and the first square steel 7 and the second square steel 5 are respectively disposed on two sides of the sealing rubber 6 and used for fixing the sealing rubber 6. Wherein, the height of second square steel 5 can be less than first square steel 7 is suitable for a little, for example short 2mm, can prevent like this to lead to second square steel 5 top to upper segment oil tank case along 2 because of upper segment oil tank case along unevenness to can guarantee that sealing rubber 6's contact nature is better.
Optionally, an asbestos rope 4 can be filled between the upper-section oil tank edge 2 and the lower-section oil tank edge 8. Because of the low coefficient of heat conductivity of asbestos rope, heat resistance is good, can effectively prevent the influence of the high temperature that produces to 6 performances of sealing rubber and the decomposition that inside transformer oil leads to because of the high temperature along seal weld and the cutting process at upper and lower section oil tank, mainly used plays the guard action to the inside sealing rubber of transformer and transformer oil of transformer along carrying out the seal weld and the cutting process at upper and lower section oil tank.
This welding oil tank structure still includes band steel 1, and band steel 1 welds in lower section oil tank case along 8 outsides to be in upper segment oil tank case along 2 and lower section oil tank case along between 8, its main function is to fill in upper segment oil tank case along 2 and lower section oil tank case along between 8, with the mechanical strength who increases the sealed welding seam between two case edges.
Optionally, this welding oil tank structure still includes limiting plate 9, and limiting plate 9 welds the inboard at lower section oil tank wall 11, and its length extends to and corresponds with upper segment oil tank wall 10, and its main function prevents that the transformer tank is when carrying out vacuum test that the case is followed and takes place to warp.
Wherein, the quantity of limiting plate 9 can be a plurality of, a plurality of limiting plate parallel arrangement.
In this embodiment, because the first spacing hole on the upper segment oil tank edge is the through-hole, and the spacing hole of second on the lower segment oil tank edge is the blind hole, and the position in the spacing hole of second keeps unanimous with the position in first spacing hole, and the hole size also matches with first spacing hole, like this when upper segment oil tank and lower segment oil tank shut the case, can carry on spacingly along with lower segment oil tank along upper segment oil tank through the bolt, treat after the bolt inserts first spacing hole and gets into the spacing hole of second, weld the head end of bolt on upper segment oil tank edge again, the oil tank structure that forms is firm reliable, and processing is convenient, thereby the processing technology degree of difficulty along the oil tank has been reduced. Meanwhile, as the sealing assembly is filled between the upper section oil tank edge and the lower section oil tank edge, the sealing performance between the upper section oil tank edge and the lower section oil tank edge can be well ensured, and the risk of site oil leakage is greatly reduced.
Example 2:
the present embodiment discloses a power transformer including the welded oil tank structure in embodiment 1.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (6)
1. A welded oil tank structure comprises an upper oil tank and a lower oil tank, and is characterized in that,
a first limiting hole is formed in the upper oil tank edge (2), and the first limiting hole is a through hole; a second limiting hole is arranged on the lower oil tank edge (8), the second limiting hole is a blind hole, the position of the second limiting hole corresponds to the first limiting hole,
a sealing component is filled between the upper section oil tank edge and the lower section oil tank edge,
a bolt (3) penetrates through the first limiting hole and enters the second limiting hole, and the head end of the bolt is welded to the edge of the upper-section oil tank.
2. The welded fuel tank structure according to claim 1, characterized in that the sealing assembly comprises a sealing rubber (6), a first square steel (7) and a second square steel (5),
the first square steel and the second square steel are respectively arranged on two sides of the sealing rubber.
3. The welded tank structure according to claim 2, characterized in that an asbestos cord (4) is filled between the upper tank rim and the lower tank rim for protecting components inside the transformer.
4. The welded fuel tank structure according to any one of claims 1 to 3, further comprising a flat steel (1) fixed outside the lower tank rim and between the upper tank rim and the lower tank rim.
5. A welded tank structure according to any of claims 1-3, characterized by a limiting plate (9) fixed to the inside of the lower tank wall (11) and extending to a length corresponding to the upper tank wall (10).
6. A power transformer, characterized by comprising a welded tank structure according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022261294.7U CN213905078U (en) | 2020-10-12 | 2020-10-12 | Welding oil tank structure and power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022261294.7U CN213905078U (en) | 2020-10-12 | 2020-10-12 | Welding oil tank structure and power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213905078U true CN213905078U (en) | 2021-08-06 |
Family
ID=77112843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022261294.7U Active CN213905078U (en) | 2020-10-12 | 2020-10-12 | Welding oil tank structure and power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213905078U (en) |
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2020
- 2020-10-12 CN CN202022261294.7U patent/CN213905078U/en active Active
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