CN203085321U - Equipotential device of edges of oil tanks of large transformer - Google Patents
Equipotential device of edges of oil tanks of large transformer Download PDFInfo
- Publication number
- CN203085321U CN203085321U CN 201220717634 CN201220717634U CN203085321U CN 203085321 U CN203085321 U CN 203085321U CN 201220717634 CN201220717634 CN 201220717634 CN 201220717634 U CN201220717634 U CN 201220717634U CN 203085321 U CN203085321 U CN 203085321U
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- China
- Prior art keywords
- case
- oil tank
- edge
- transformer
- fuel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an equipotential device of edges of oil tanks of a large transformer and belongs to the technical field of transformers. According to the technical scheme, the equipotential device of the edges of the oil tanks of the large transformer comprises short connecting pieces (1), washers (2), fastening pieces (3), an upper oil tank edge (4) and a lower oil tank edge (7), wherein the short connecting pieces are of U-shaped structures and are fixedly connected between the upper oil tank edge and the lower oil tank edge through the fastening pieces. The equipotential device of the edges of the oil tanks of the large transformer is installed at the connection position of an upper oil tank and a lower oil tank of the large transformer and capable of effectively reducing temperature rising speed of the edge of the transformer and bolts. Due to the fact that the washers are welded at the positions, corresponding to the short connecting pieces, of the edges of the oil tanks and are not coated with paint, effective electrical connection between the upper oil tank of the transformer and the lower oil tank of the transformer can be effectively guaranteed. Due to the fact that the number of the short connecting pieces and the sizes of the short connecting pieces can be adjusted according to practical requirements, safe operation of the transformer is guaranteed. The equipotential device of the edges of the oil tanks of the large transformer has the advantages of being simple in structure, attractive in appearance, reliable in use, and good in generality.
Description
Technical field
The utility model relates to the equipotential device on a kind of high-power transformer fuel tank case edge, belongs to the transformer technology field.
Background technology
At present, the upper and lower fuel-economizing case of large-scale power transformer bell type tank relies on bolt to connect, and bolt plays a part mechanical fasteners and the each several part current potential is equated.Because there is potential difference in the upper and lower fuel-economizing case of transformer present position difference in stray field, therefore can cause case overheated along flowing through bigger electric current in the bolt at case along bolt; Leakage field in the coil pass case along the time also can concentrate on the bolt surface and also cause bolt heating.If can not well be electrically connected between the upper and lower fuel-economizing case, long-term under the bolt febrile state operation can accelerating chamber aging along seal, influence the sealing of fuel tank, cause the accident.
The utility model content
The utility model purpose provides the equipotential device on a kind of high-power transformer fuel tank case edge, reduces manufacturing cost, and is easy for installation, avoids causing the transformer seepage, guarantees the safe and reliable operation of transformer, solves the problems referred to above that background technology exists.
The technical solution of the utility model is: the equipotential device on a kind of high-power transformer fuel tank case edge, comprise short circuit sheet, packing ring, securing member, go up fuel-economizing case case edge and lower oil tank case edge, described short circuit sheet is a U type structure, is fixedly connected between fuel-economizing case case edge and the lower oil tank case edge by securing member.
Described securing member is a bolt, two bolts are welded on fuel-economizing case case edge and lower oil tank case edge respectively, be through packing ring on the bolt and be welded in fuel-economizing case case edge and lower oil tank case respectively along correspondence position, do not paint on the packing ring, can guarantee effectively that the fuel-economizing case effectively is electrically connected with following fuel-economizing on the transformer; The short circuit sheet is the short circuit sheet of being made by zinc-plated soft copper bus, and two ends have through hole, and bolt passes through hole, and is fastening by nut.
Good effect of the present utility model: the utility model is installed in the connecting portion of fuel-economizing case and lower oil tank on the high-power transformer, can effectively reduce the temperature rise of transformer tank edge and bolt; Because packing ring is welded in the fuel tank case along the short circuit correspondence position, and does not paint, can guarantee effectively that the fuel-economizing case effectively is electrically connected with following fuel-economizing on the transformer; Can regulate the quantity and the size of pipe nipple sheet according to actual needs, guarantee the safe operation of transformer; The utility model is simple in structure, good looking appearance, and use reliably, good versatility is arranged.
Description of drawings
Fig. 1 is the utility model embodiment short circuit sheet schematic diagram;
Fig. 2 is the utility model embodiment short circuit sheet schematic top plan view;
Fig. 3 is the utility model embodiment schematic diagram;
Among the figure: short circuit sheet 1, packing ring 2, securing member 3, go up fuel-economizing case case along 4, go up fuel-economizing case 5, lower oil tank 6, lower oil tank case along 7.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further by embodiment.
The equipotential device on a kind of high-power transformer fuel tank case edge, comprise short circuit sheet 1, packing ring 2, securing member 3, go up fuel-economizing case case along 4 and the lower oil tank case along 7, described short circuit sheet is a U type structure, is fixedly connected between fuel-economizing case case edge and the lower oil tank case edge by securing member.The short circuit sheet along connecting, forms dismountable draw bail by bolt and last fuel-economizing case case edge and lower oil tank case.
Described securing member is a bolt, two bolts are welded on fuel-economizing case case edge and lower oil tank case edge respectively, be through packing ring on the bolt and be welded in fuel-economizing case case edge and lower oil tank case respectively along correspondence position, do not paint on the packing ring, can guarantee effectively that the fuel-economizing case effectively is electrically connected with following fuel-economizing on the transformer; The short circuit sheet is the short circuit sheet of being made by zinc-plated soft copper bus, and two ends have through hole, and bolt passes through hole, and is fastening by nut.
Claims (2)
1. the equipotential device on a high-power transformer fuel tank case edge, it is characterized in that: comprise short circuit sheet (1), packing ring (2), securing member (3), go up fuel-economizing case case along (4) and lower oil tank case edge (7), described short circuit sheet is a U type structure, is fixedly connected between fuel-economizing case case edge and the lower oil tank case edge by securing member.
2. the equipotential device on a kind of high-power transformer fuel tank case according to claim 1 edge, it is characterized in that: described securing member is a bolt, two bolts are welded on fuel-economizing case case edge and lower oil tank case edge respectively, be through packing ring on the bolt and be welded in fuel-economizing case case edge and lower oil tank case respectively along correspondence position, the short circuit sheet is the short circuit sheet of being made by zinc-plated soft copper bus, two ends have through hole, and bolt passes through hole, and are fastening by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717634 CN203085321U (en) | 2012-12-24 | 2012-12-24 | Equipotential device of edges of oil tanks of large transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717634 CN203085321U (en) | 2012-12-24 | 2012-12-24 | Equipotential device of edges of oil tanks of large transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085321U true CN203085321U (en) | 2013-07-24 |
Family
ID=48831137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220717634 Expired - Lifetime CN203085321U (en) | 2012-12-24 | 2012-12-24 | Equipotential device of edges of oil tanks of large transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584205A (en) * | 2020-06-10 | 2020-08-25 | 中车株洲电机有限公司 | Power electronic transformer and transformer insulation potential distribution structure |
-
2012
- 2012-12-24 CN CN 201220717634 patent/CN203085321U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584205A (en) * | 2020-06-10 | 2020-08-25 | 中车株洲电机有限公司 | Power electronic transformer and transformer insulation potential distribution structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |