CN101236825A - Auxiliary transformer for electric engine - Google Patents
Auxiliary transformer for electric engine Download PDFInfo
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- CN101236825A CN101236825A CNA2007101589333A CN200710158933A CN101236825A CN 101236825 A CN101236825 A CN 101236825A CN A2007101589333 A CNA2007101589333 A CN A2007101589333A CN 200710158933 A CN200710158933 A CN 200710158933A CN 101236825 A CN101236825 A CN 101236825A
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- voltage coil
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- electric locomotive
- clamping piece
- auxiliary transformer
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Abstract
The invention relates to an electric locomotive auxiliary transformer, which comprises an iron core, a high voltage coil, a low voltage coil, an upper clamping piece, a lower clamping piece, a side-pull screw, a drawing screw, an insulating piece and so on. The invention is characterized in that: the upper clamping piece and the lower clamping piece are No.8 channel steels; the side-pull screw and the drawing screw are M12 screws; foot pad insulating positions of pressing mechanisms on the high voltage coil and the low voltage coil are provided with silicone rubber pads; the dipping lacquer time of the high voltage coil and the low voltage coil is at least three; epoxy resins are coated on at least one position among the upper parts and the lower parts of an inner circles and excircles of the high voltage coil and the low voltage coil, and upper end faces and lower end faces of the high voltage coil and the low voltage coil. The electric locomotive auxiliary transformer changes the current situation that the prior homemade electric locomotive is not provided with an auxiliary transformer, and the open type (H level) dry type transformer with superior structure and performance is successfully applied in the electric locomotive power distribution field through technical improvement. Moreover, the electric locomotive auxiliary transformer is characterized in simple structure, low cost, good impact resistance and shock resistance and strong rainproof capability and moisture resistance, and can replace similar products on imported electric locomotives.
Description
Technical field
The present invention relates to a kind of transformer, particularly relate to a kind of open type (H level) dry-type transformer that is applicable to electric locomotive, is the improvement to existing transformer device structure, belongs to the manufacturing technology of transformer.
Background technology
Prime mover is not with in electric locomotive itself, is abutted against to be subjected to electric current that contact line sends here as the energy, drives the wheel of locomotive by traction motor, has advantages such as power is big, the heat efficiency is high, speed is fast, overload capacity is strong, reliable, free from environmental pollution.The traction transformer of electric locomotive main circuit system, basic production domesticization has formed national standard, and complete product line is arranged.And auxiliary circuit adopts without transformer conversion power supply always in the past, adopt traditional single-phase-three-phase power supply system, power supply is drawn by the auxiliary winding of traction transformer and is provided, output voltage has only 380V and 220V, causes the reasonable disposition of electric locomotive auxiliary equipment, facility, instrument and meter poor like this, safety in utilization is poor, the electric power system poor stability.Introduce the electric locomotive of Japan and other countries, its main circuit system with domestic very nearly the same, and disposed auxiliary transformer in the auxiliary circuit, and cause the change of auxiliary power consumption equipment, facility, instrument and meter specifications and characteristics, make it rationally, coupling, safety, stable.But the auxiliary transformer for electric engine of domestic import is in confidential state, and its internal structure and technical performance data can't obtain from disclosed publication, therefore can't realize production domesticization.
Existing open type (H level) dry-type transformer, its structure is: iron core adopts high magnetic conduction grain orientation cold-reduced silicon sheet, full mitered atresia colligation, folder from top to bottom clamping structure, at the folded sign indicating number of multistage iron core side brushing curing agent; Its high-voltage coil and low-voltage coil adopts continous way cake formula structure, handles through vacuum, pressure dipping lacquer, and it is Better1154 H level solvent-free flame-retardant insulating varnish that lacquer is planted; With drawing screw rod to clamp iron core, coil and various insulating part, it is basic material that the insulation system of this product adopts NOMEX paper when coil and iron core assembling.If but be displaced in the electric locomotive then have two large problems: 1. shock resistance and anti-shake performance are poor; 2. the anti-moisture proof ability of drenching with rain.
Summary of the invention
Purpose of the present invention just is to overcome the prior art above shortcomings, provide a kind of auxiliary transformer for electric engine, this auxiliary transformer for electric engine has changed the present situation that existing homemade electric locomotive does not have auxiliary transformer, the open type that will have superior structural and excellent properties (H level) dry-type transformer by the technological improvement success is incorporated in the distribution field of electric locomotive, have simple in structure, with low cost, shock resistance and anti-shake performance is good and the anti-strong characteristics of moisture proof ability of drenching with rain, can replace the like product in the import electric locomotive.
The technical solution that the present invention provides is: this auxiliary transformer for electric engine, comprise iron core, high-voltage coil and low-voltage coil, on, lower clamping piece, the side is drawn screw rod and is drawn formations such as screw rod and insulating part, be characterized in described on, lower clamping piece is No. 8 channel-section steels, described side is drawn screw rod and drawn screw rod is the screw rod of M12, it is good that the pad pin insulation position of the hold-down mechanism on the described high-voltage coil and low-voltage coil is provided with electrical strength, good springiness and resistant to elevated temperatures silicone rubber pad, the dipping lacquer number of times of described high-voltage coil and low-voltage coil is at least 3 times, in the described high-voltage coil and low-voltage coil, on the cylindrical, on bottom and the high-voltage coil and low-voltage coil, be coated with at least one place of lower surface and be brushed with epoxy resin.
In the present invention, because the material specification of upper and lower folder is used channel-section steel instead No. 8 by No. 6.30 channel-section steels of former design specification, make the composite bending modulus of transformer increase by 25%～30%; Because the other specification of drawing screw rod and drawing screw rod is used the screw rod of M12 instead by the M10 screw rod of former design specification, make and otherly draw screw rod and draw screw rod tensile strength to improve 30%～40%; Because dipping lacquer number of times once being increased to three times of high-voltage coil and low-voltage coil by former design specification, originally dipping lacquer film forming thickness is about 20～30 microns, and the build of three dipping lacquers reaches 70～90 microns, has improved electrical strength, mechanical strength, high-temperature capability and the humidity resistance of coil; Because the present invention has changed in the former design specification not the practice to the upper and lower exposed surface brushwork epoxy resin of high-voltage coil and low-voltage coil, in the upper and lower part of the inside and outside circle of high-voltage coil and low-voltage coil and the upper and lower end face brushing of high-voltage coil and low-voltage coil epoxy resin is arranged, improved auxiliary transformer for electric engine greatly anti-ly drench with rain, damp-proof effect.
Compared with prior art, beneficial effect of the present invention is: changed the present situation that existing homemade electric locomotive does not have auxiliary transformer, the open type that will have superior structural and excellent properties (H level) dry-type transformer by the technological improvement success is incorporated in the distribution field of electric locomotive, have simple in structure, with low cost, shock resistance and anti-shake performance is good and the anti-strong characteristics of moisture proof ability of drenching with rain, can replace the like product in the import electric locomotive.
Description of drawings
Fig. 1 is the structural representation of existing open type (H level) dry-type transformer;
The structural representation of the electric locomotive auxiliary transformer that Fig. 2 designs for the present invention;
Fig. 3 is the schematic diagram of high-voltage coil and low-voltage coil brushwork epoxy resin.
Embodiment
Below in conjunction with embodiment concrete technical scheme of the present invention is described further:
As Fig. 1～shown in Figure 3, this auxiliary transformer for electric engine, comprise iron core 3, high-voltage coil and low-voltage coil 5, on, lower clamping piece 1, the side is drawn screw rod 4 and is drawn formations such as screw rod 2 and insulating part, on described, lower clamping piece 1 is No. 8 channel-section steels, described side is drawn screw rod 4 and is drawn screw rod 2 to be the screw rod of M12, it is good that the pad pin insulation position of the hold-down mechanism on the described high-voltage coil and low-voltage coil 5 is provided with electrical strength, good springiness and resistant to elevated temperatures silicone rubber pad 6, the dipping lacquer number of times of described high-voltage coil and low-voltage coil 5 is at least 3 times, the top of circle 8 in the described high-voltage coil and low-voltage coil 5, the bottom, the top of cylindrical 7, the bottom, and high-voltage coil and low-voltage coil on, lower surface 9 amounts to 6 places and all is coated with and is brushed with epoxy resin 7.
Model machine of the present invention was sent to once that " national transformer quality supervision and test " center " carries out complete detection; conclusion is: (model: JCS-40/1.0) result of the test of routine test, temperature rise test, partial discharge test, rain test meets test stone and requirement to locomotive, the above-mentioned pass the test of sample with dry-type power transformer.
Model machine of the present invention also once was sent to " locomotive Vehicle inspection station, Ministry of Railways product quality supervision and inspection center " and carries out " general inspection, vibration and shock testing ", and conclusion (of pressure testing) is: institute's inspection project meets the requirement of TB/T3058-2002 " railway applications rolling stock equipment shock and vibration test ".
Claims (1)
1, a kind of auxiliary transformer for electric engine, comprise iron core, high-voltage coil and low-voltage coil, on, lower clamping piece, the side is drawn screw rod and is drawn formations such as screw rod and insulating part, it is characterized in that described on, lower clamping piece is No. 8 channel-section steels, described side is drawn screw rod and drawn screw rod is the screw rod of M12, it is good that the pad pin insulation position of the hold-down mechanism on the described high-voltage coil and low-voltage coil is provided with electrical strength, good springiness and resistant to elevated temperatures silicone rubber pad, the dipping lacquer number of times of described high-voltage coil and low-voltage coil is at least 3 times, in the described high-voltage coil and low-voltage coil, on the cylindrical, on bottom and the high-voltage coil and low-voltage coil, be coated with at least one place of lower surface and be brushed with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101589333A CN101236825B (en) | 2007-12-14 | 2007-12-14 | Auxiliary transformer for electric engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101589333A CN101236825B (en) | 2007-12-14 | 2007-12-14 | Auxiliary transformer for electric engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101236825A true CN101236825A (en) | 2008-08-06 |
| CN101236825B CN101236825B (en) | 2010-09-01 |
Family
ID=39920364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101589333A Expired - Fee Related CN101236825B (en) | 2007-12-14 | 2007-12-14 | Auxiliary transformer for electric engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101236825B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167278A (en) * | 2014-07-07 | 2014-11-26 | 苏州腾冉电气设备有限公司 | Phase-shifting reactor tensioning structure |
| CN109637786A (en) * | 2019-01-29 | 2019-04-16 | 中车株洲电机有限公司 | A kind of electric locomotive and its auxiliary transformer |
| CN111863421A (en) * | 2020-07-31 | 2020-10-30 | 长沙麓山电子科技有限公司 | Waterproof treatment method for transformer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664131Y (en) * | 2003-09-05 | 2004-12-15 | 保定天威集团有限公司 | A single machine 18-phase rectifier transformer |
| CN2755748Y (en) * | 2004-12-08 | 2006-02-01 | 许继集团有限公司 | Open ventilating dry transformer with retardant paper paint-immersed insulation |
| CN2864938Y (en) * | 2005-12-13 | 2007-01-31 | 中电电气集团有限公司 | Non-sealed dry-type transformer core clamping structure |
| CN101064209A (en) * | 2007-03-15 | 2007-10-31 | 辽宁华冶集团发展有限公司 | Environment protection H-grade insulation dry transformer |
-
2007
- 2007-12-14 CN CN2007101589333A patent/CN101236825B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167278A (en) * | 2014-07-07 | 2014-11-26 | 苏州腾冉电气设备有限公司 | Phase-shifting reactor tensioning structure |
| CN109637786A (en) * | 2019-01-29 | 2019-04-16 | 中车株洲电机有限公司 | A kind of electric locomotive and its auxiliary transformer |
| CN111863421A (en) * | 2020-07-31 | 2020-10-30 | 长沙麓山电子科技有限公司 | Waterproof treatment method for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101236825B (en) | 2010-09-01 |
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Granted publication date: 20100901 Termination date: 20191214 |