CN208738015U - A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric - Google Patents
A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric Download PDFInfo
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- CN208738015U CN208738015U CN201821575467.9U CN201821575467U CN208738015U CN 208738015 U CN208738015 U CN 208738015U CN 201821575467 U CN201821575467 U CN 201821575467U CN 208738015 U CN208738015 U CN 208738015U
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Abstract
The utility model relates to a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric, it includes low pressure winding and high-voltage winding；It is provided with insulating cylinder between low pressure winding and high-voltage winding, the first oil duct of the first oil duct of low pressure winding outside diameter and high-voltage winding internal side diameter will be separated by insulating cylinder between low pressure winding and high-voltage winding；There is insulation weak location in the end of the low pressure winding；Wherein, insulating cylinder includes a thin insulating cylinder and a heavy insulation cylinder, is provided with gap between two insulating cylinders；The insulation weak location is surrounded by small square ring.A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric of the utility model, one insulating cylinder is divided into two insulating cylinders, and the small square ring of packet is added to low pressure winding overhang insulation weak location, cancel the square ring that high-voltage winding upper and lower end parts play insulating effect, reduce main insulating structure, insulation system is simplified, manufacturing cost is reduced.
Description
Technical field
The utility model relates to power transformer fields, more particularly to a kind of 35kV oil-immersed power transformer high-low pressure
Winding Main Insulation Structure of Electric.
Background technique
As shown in Fig. 2, its lower end insulation system between current 35kV oil-immersed power transformer high-low pressure winding shows
Be intended to, the inside winding of transformer is mainly two windings, i.e. low pressure winding and high-voltage winding, their arrangement mode by it is interior to
It is outside successively low pressure winding 1 and high-voltage winding 2, low pressure winding and high-voltage winding are in adjacent position, and master between the two is exhausted
Edge distance is determined by the dielectric level of high-voltage winding.The dielectric level of high-voltage winding is all-wave surge voltage 200kV, in short-term
Power-frequency voltage 85kV.Dielectric level accordingly, existing main insulating structure is 18~19.5mm between high-voltage coil and low-voltage coil, shown in figure
It is designed in high-tension coil upper and lower end parts in order to cope with the insulation weak location 7 of low pressure winding end for 19.5mm and plays insulation
The big square ring 6 of effect；Between low pressure winding and high-voltage winding by the insulating cylinder 3 of 4mm thickness be separated into width be 7.5mm low pressure around
The first oil duct of high-voltage winding internal side diameter 4 that group the first oil duct of outside diameter 5 and width are 8mm；Such existing structure, high-voltage winding
Main insulating structure between low pressure winding is bigger than normal, and structure is excessively complicated, so that manufacturing cost is higher.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of 35kV oil-immersed power transformer high-low pressure winding
One insulating cylinder is divided into two insulating cylinders, and adds the small square ring of packet to low pressure winding overhang insulation weak location by Main Insulation Structure of Electric,
Cancel the square ring that high-voltage winding upper and lower end parts play insulating effect, reduce main insulating structure, simplify insulation system, reduces system
Cause this.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of 35kV oil-immersed power transformer is high
Low pressure winding Main Insulation Structure of Electric, it includes low pressure winding and high-voltage winding；Insulation is provided between low pressure winding and high-voltage winding
Cylinder, will be separated into the first oil duct of low pressure winding outside diameter and high-voltage winding by insulating cylinder between low pressure winding and high-voltage winding
The first oil duct of diameter side；There is insulation weak location in the end of the low pressure winding；Wherein, insulating cylinder includes a thin insulating cylinder and one
Heavy insulation cylinder is provided with gap between two insulating cylinders；The insulation weak location is surrounded by small square ring.
The spacing of the low pressure winding and high-voltage winding is 15mm.
The thin insulating cylinder with a thickness of 1mm；The heavy insulation cylinder with a thickness of 3mm；It is provided between two insulating cylinders
Gap is 2mm.
The width of pressure first oil duct of winding outside diameter is 5mm.
The width of the first oil duct of high-voltage winding internal side diameter is 4mm.
The utility model has the beneficial effects that a kind of 35kV oil-immersed power transformer high-low pressure winding master of the utility model
Main insulating structure between high-voltage winding and low pressure winding is decreased to 15mm, low pressure winding outer diameter by 19.5mm by insulation system
The first oil duct of side is changed to 5mm by 7.5mm, and the first oil duct of high-tension coil internal side diameter is changed to 4mm by 8mm, and by the insulation of original 4mm
Cylinder is divided into two insulating cylinders of 1mm and 3mm thickness, re-starts oil clearance segmentation to main insulating structure；And to low pressure winding end
Insulation weak location adds the small square ring of packet, cancels the square ring that high-voltage winding upper and lower end parts play insulating effect, simplifies insulation system,
Reduce manufacturing cost.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric of embodiment；
Fig. 2 is the schematic diagram of existing 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric.
Specific embodiment
In order to deepen the understanding to the utility model, the utility model is done further below in conjunction with drawings and examples
Detailed description, the embodiment are only used for explaining the utility model, do not constitute and limit to the protection scope of the utility model.
Embodiment
As shown in Figure 1, a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric is present embodiments provided,
It includes low pressure winding 1 and high-voltage winding 2；It is provided with insulating cylinder between low pressure winding 1 and high-voltage winding 2, it will by insulating cylinder
The first oil duct of the first oil duct of low pressure winding outside diameter 5 and high-voltage winding internal side diameter is separated between low pressure winding 1 and high-voltage winding 2
4；There is insulation weak location 7 in the end of the low pressure winding 1；Wherein, insulating cylinder includes a thin insulating cylinder 8 and a heavy insulation cylinder
9, gap is provided between two insulating cylinders；The insulation weak location 7 is surrounded by small square ring 10；The low pressure winding 1 and high pressure
The spacing of winding 2 is 15mm；The thin insulating cylinder 8 with a thickness of 1mm；The heavy insulation cylinder 9 with a thickness of 3mm；Two insulation
It is 2mm that gap is provided between cylinder；The width of pressure first oil duct of winding outside diameter 5 is 5mm；High-voltage winding internal side diameter first
The width of oil duct 4 is 4mm.
A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric of the present embodiment, by high-voltage winding with it is low
Main insulating structure between pressure winding is decreased to 15mm by 19.5mm, and the first oil duct of low pressure winding outside diameter is changed to by 7.5mm
5mm, the first oil duct of high-tension coil internal side diameter is changed to 4mm by 8mm, and the insulating cylinder of original 4mm is divided into 3mm and 1mm thickness
Two insulating cylinders re-start oil clearance segmentation to main insulating structure；And the small angle of packet is added to low pressure winding overhang insulation weak location
Ring cancels the square ring that high-voltage winding upper and lower end parts play insulating effect, simplifies insulation system, reduces manufacturing cost.
Above-described embodiment should not in any way limit the utility model, all by the way of equivalent replacement or equivalency transform
The technical solution of acquisition is all fallen in the protection scope of the utility model.
Claims (5)
1. a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric, it includes low pressure winding and high-voltage winding；
It is provided with insulating cylinder between low pressure winding and high-voltage winding, will be separated between low pressure winding and high-voltage winding by insulating cylinder low
Press the first oil duct of winding outside diameter and the first oil duct of high-voltage winding internal side diameter；There is weak position of insulating in the end of the low pressure winding
It sets；It is characterized by: insulating cylinder includes a thin insulating cylinder and a heavy insulation cylinder, gap is provided between two insulating cylinders；It is described
Insulation weak location is surrounded by small square ring.
2. a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric according to claim 1, feature
Be: the spacing of the low pressure winding and high-voltage winding is 15mm.
3. a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric according to claim 1, feature
Be: the thin insulating cylinder with a thickness of 1mm；The heavy insulation cylinder with a thickness of 3mm；Gap is provided between two insulating cylinders
For 2mm.
4. a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric according to claim 1, feature
Be: the width of pressure first oil duct of winding outside diameter is 5mm.
5. a kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric according to claim 1, feature
Be: the width of first oil duct of high-voltage winding internal side diameter is 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821575467.9U CN208738015U (en) | 2018-09-26 | 2018-09-26 | A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821575467.9U CN208738015U (en) | 2018-09-26 | 2018-09-26 | A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric |
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| Publication Number | Publication Date |
|---|---|
| CN208738015U true CN208738015U (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821575467.9U Active CN208738015U (en) | 2018-09-26 | 2018-09-26 | A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036809A (en) * | 2018-09-26 | 2018-12-18 | 吴江变压器有限公司 | A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric |
-
2018
- 2018-09-26 CN CN201821575467.9U patent/CN208738015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036809A (en) * | 2018-09-26 | 2018-12-18 | 吴江变压器有限公司 | A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric |
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