CN204614615U - Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer - Google Patents
Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer Download PDFInfo
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- CN204614615U CN204614615U CN201520375776.1U CN201520375776U CN204614615U CN 204614615 U CN204614615 U CN 204614615U CN 201520375776 U CN201520375776 U CN 201520375776U CN 204614615 U CN204614615 U CN 204614615U
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Abstract
Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer, comprises iron core, low-voltage coil, high-tension coil, transformer body and fuel tank.Described iron core adopts three dimensional wound core structure.Low-voltage coil adopts high-quality Copper Foil bag F class F insulating material F to form in core limb coiling, and interlayer adopts F level preimpregnation DMD insulation.High-tension coil adopts multi-layer cylindrical structure, is located on low-voltage coil with F class F insulation film copper-clad wire-wound, and layer insulation adopts F class F insulating material F 0.1GDS point gummed paper.Transformer body is provided with and comprises low-voltage coil oil duct, high-tension coil oil duct and the main insulation oil duct between low-voltage coil and high-tension coil, and each oil duct adopts F level DMD laminated sheet as insulating supporting.Fuel tank adopts the hermetically sealed corrugate fin fuel tank of triangular structure.The utility model effectively reduces no-load loss during rural power grids transformer underloading, has superpower overload capacity within a certain period of time again, decreases a cost of investment of rural power grids.
Description
Technical field
The utility model relates to power transmission and transforming equipment distribution transformer technical field, particularly relates to a kind of mix insulation three-phase stereo rewinding material rural power grids high overload distribution transformer.
Background technology
Along with expanding economy, rural area year power consumption and demand constantly increase, thing followed problem has also become many.Rural power grids structural weak, line loss is large, and the strange height of electricity price is an outstanding problem, and this problem has seriously constrained the construction and development in rural area, so the reduction of the transformation of rural power grids and rural power grids electricity price is imperative.
Rural power grids distribution transformer occupies extremely important status in rural power grids, the no-load loss of rural power grids distribution transformer account for very most of in line loss, can reduce again by a cost of investment while how reducing the no-load loss of rural power grids distribution transformer, for the upgrading of rural power grids, reduce line loss, improve electricity price and have great significance.
Prior art defect is: because rural power grids electricity consumption peak valley is particularly thorny, seasonality strong, and the rural power grids distribution transformer annual overwhelming majority time is in light running state, and annual load factor is on the low side, but explosive load is stronger.When explosive load is stronger, may cause the trip protection of some areas distribution transformer, more serious also can cause burning of transformer.For avoiding rural power grids distribution transformer to burn because of overload, one is the use capacity increasing transformer, but rural power grids cost of investment can be made so significantly to improve, and can increase again the no-load loss of transformer, line loss is increased.Two is adopt capacitance-adjustable transformer, although no-load loss when capacitance-adjustable transformer can effectively reduce transformer underloading, one-time investment cost is too high, so above two kinds is not the ideal chose of rural power grids distribution transformer.
Utility model content
The technical problems to be solved in the utility model is, no-load loss during a kind of effective reduction rural power grids transformer underloading is provided, have superpower overload capacity within a certain period of time again, there is capacity little, no-load loss is low, reduces the hybrid insulation systems three-phase stereo rewinding material rural power grids high overload ability distribution transformer of a cost of investment of rural power grids.
The technical scheme adopted is:
Mix insulation three-phase stereo rewinding material rural power grids high overload distribution transformer, comprises iron core, low-voltage coil, high-tension coil, transformer body and fuel tank.Described iron core adopts the Winding iron core single frame by three physical dimensions are identical to be put together, and its core limb be the three-dimensional three dimensional wound core structure arranged of equilateral triangle, makes its three lengths of magnetic path consistent.Described low-voltage coil adopts the coiling on core limb of high-quality Copper Foil outsourcing F class F insulating material F to form, and interlayer adopts F level preimpregnation DMD insulation, forms firm entirety through heating and coil.Described high-tension coil adopts multi-layer cylindrical structure, and with F class F insulation film copper-clad wire-wound on low-voltage coil, layer insulation adopts F class F insulating material F 0.1GDS point gummed paper, forms firm entirety through heating and coil.Described transformer body is provided with and comprises low-voltage coil oil duct, high-tension coil oil duct and the main insulation oil duct between low-voltage coil and high-tension coil, increase the quantity (being equivalent to increase the area of dissipation of high-voltage coil and low-voltage coil) of high-low pressure oil duct, each oil duct adopts F level DMD laminated sheet as insulating supporting.Described fuel tank adopts the hermetically sealed corrugate fin fuel tank of triangular structure, adds the area of dissipation of large tank.Be contained in and be full of in the fuel tank of insulating oil by the transformer body that low-voltage coil, high-tension coil and three-phase stereo rewinding material form, to form the solid insulating material insulation grade anti-corrosion being close to winding conducting wire be F level and fluid insulation oil and other solid insulating material insulation grade anti-corrosion away from winding conducting wire is the hybrid insulation systems three-phase stereo rewinding material rural power grids high overload ability distribution transformer of A level.
The utility model effectively reduces no-load loss during rural power grids transformer underloading, and have superpower overload capacity within a certain period of time again, capacity is little, and no-load loss is low, decreases a cost of investment of rural power grids.
Accompanying drawing explanation
Fig. 1 is surface structure schematic diagram of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is three dimensional wound core structural representation of the present utility model.
Fig. 4 is transformer body of the present utility model assembling schematic diagram.
Fig. 5 is Oiltank structure schematic diagram of the present utility model.
Fig. 6 is the vertical view of Fig. 5.
Embodiment
Design philosophy of the present utility model adopts a kind of distribution transformer having superpower overload capacity within a certain period of time.This transformer capacity is little, and no-load loss is low, is suitable for the actual conditions by the long-term underloading of rural power grids distribution transformer, but when explosive load is stronger, far can exceed rated capacity safe operation within a certain period of time again.Its core solves target, when transformer overload operation, is that solid insulation or the fluid insulation of inside transformer is all no more than the heat-resisting limit value of insulation own.And the utility model employing is a kind of hybrid insulation systems, namely all insulation being close to winding conducting wire all adopt high-temp solid insulating material, and in low-temperature region, be the insulating material of 105 DEG C of limit values by thermal endurance class.Concrete scheme is as follows:
Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer, comprises iron core 3, low-voltage coil 7, high-tension coil 6, transformer body 5 and fuel tank 1.Described iron core 3 adopts the Winding iron core single frame by three physical dimensions are identical to be put together, and three dimensional wound core structure of its core limb 4 solid arrangement in equilateral triangle, makes its three lengths of magnetic path consistent (see Fig. 3).Without air-gap in its iron circuit, winding is more tight, and magnetic conduction direction and the magnetic circuit direction of silicon steel sheet are completely the same, and processing cover material no waste mine, greatly reduces material cost and the no-load loss of product.Described low-voltage coil 7 adopts the coiling on core limb 4 of high-quality Copper Foil outsourcing F class F insulating material F to form, and interlayer adopts F level preimpregnation DMD insulation, and form firm entirety through heating and coil, coil mechanical strength is high, and anti-short circuit capability is strong, and thermal shock resistance is strong; Described high-tension coil 6 adopts multi-layer cylindrical structure, with F class F insulation film copper-clad wire-wound on low-voltage coil, layer insulation adopts F class F insulating material F 0.1GDS point gummed paper, forms firm entirety through heating and coil, coil lightning impulse resistant ability is strong, and thermal shock resistance is strong.Described transformer body 5 is provided with and comprises low-voltage coil 7 and low-voltage coil oil duct 9, high-tension coil 6 and high-tension coil oil duct 10 and the main insulation oil duct 8 between low-voltage coil and high-tension coil, by increasing the oil duct quantity (being equivalent to increase the area of dissipation of high-voltage coil and low-voltage coil) of high-voltage coil and low-voltage coil in transformer body, reduce high and low pressure winding to the temperature rise of oil, prevent the local overheating of Transformer Winding, each oil duct adopts F level DMD laminated sheet as insulating supporting.Described fuel tank 1 adopts hermetically sealed corrugate fin 2 fuel tank of triangular structure, by increasing the area of dissipation of fuel tank, reducing transformer oil to the air temperature rise of fuel tank outside, making temperature of oil in transformer be no more than 105 DEG C when transformer overload runs.Being contained in by the transformer body 5 that low-voltage coil 7, high-tension coil 6 and three-phase stereo rewinding material 3 form is full of in the fuel tank 1 of insulating oil, and to form the solid insulating material insulation grade anti-corrosion being close to winding conducting wire be F level and fluid insulation oil and other solid insulating material insulation grade anti-corrosion away from winding conducting wire is the hybrid insulation systems three-phase stereo rewinding material rural power grids high overload ability distribution transformer of A level.
Claims (1)
1. hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer, comprise iron core (3), low-voltage coil (7), high-tension coil (6), transformer body (5) and fuel tank (1), it is characterized in that described iron core (3) adopts the Winding iron core single frame by three physical dimensions are identical to be put together, the three dimensional wound core structure of its core limb (4) three-dimensional arrangement in equilateral triangle, make its three lengths of magnetic path consistent, described low-voltage coil (7) adopts Copper Foil outsourcing F class F insulating material F to form in core limb (4) coiling, interlayer adopts F level preimpregnation DMD insulation, firm entirety is formed through heating and coil, described high-tension coil (6) adopts multi-layer cylindrical structure, with F class F insulation film copper-clad wire-wound on low-voltage coil (7), layer insulation adopts F class F insulating material F 0.1GDS point gummed paper, firm entirety is formed through heating and coil, transformer body (5) is provided with and comprises low-voltage coil oil duct (9), high-tension coil oil duct (10) and the main insulation oil duct (8) between low-voltage coil and high-tension coil, adopt F level DMD laminated sheet as insulating supporting, described fuel tank (1) adopts hermetically sealed corrugate fin (2) fuel tank of triangular structure, strengthen the area of dissipation of three-phase fuel tank, by low-voltage coil (7), the transformer body (5) that high-tension coil (6) and three-phase stereo rewinding material (3) form be contained in be full of insulation fuel tank (1) in, form hybrid insulation systems three-phase stereo rewinding material rural power grids high overload ability distribution transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375776.1U CN204614615U (en) | 2015-06-03 | 2015-06-03 | Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520375776.1U CN204614615U (en) | 2015-06-03 | 2015-06-03 | Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer |
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| CN204614615U true CN204614615U (en) | 2015-09-02 |
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| CN201520375776.1U Active CN204614615U (en) | 2015-06-03 | 2015-06-03 | Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494055A (en) * | 2018-12-18 | 2019-03-19 | 辽宁易德实业集团有限公司 | Intelligent vacuum arc extinguishing three-dimensional winding iron core capacity and pressure regulating transformer |
-
2015
- 2015-06-03 CN CN201520375776.1U patent/CN204614615U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494055A (en) * | 2018-12-18 | 2019-03-19 | 辽宁易德实业集团有限公司 | Intelligent vacuum arc extinguishing three-dimensional winding iron core capacity and pressure regulating transformer |
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