CN203871160U - Rolled iron core traction transformer - Google Patents

Rolled iron core traction transformer Download PDF

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Publication number
CN203871160U
CN203871160U CN201420270291.1U CN201420270291U CN203871160U CN 203871160 U CN203871160 U CN 203871160U CN 201420270291 U CN201420270291 U CN 201420270291U CN 203871160 U CN203871160 U CN 203871160U
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CN
China
Prior art keywords
winding
iron core
pressure
voltage
low
Prior art date
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.)
Withdrawn - After Issue
Application number
CN201420270291.1U
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Chinese (zh)
Inventor
高仕斌
吴志强
韩正庆
林彬彬
魏宏伟
万洪新
翁建华
汪大千
林忠良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT (GROUP) Co Ltd
Southwest Jiaotong University
Original Assignee
CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT (GROUP) Co Ltd
Southwest Jiaotong University
Priority date (The priority date 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 date listed.)
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Application filed by CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT (GROUP) Co Ltd, Southwest Jiaotong University filed Critical CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT (GROUP) Co Ltd
Priority to CN201420270291.1U priority Critical patent/CN203871160U/en
Application granted granted Critical
Publication of CN203871160U publication Critical patent/CN203871160U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model discloses a rolled iron core traction transformer which comprises an iron core. The iron core is formed by splicing two symmetrical annealed iron core closed single frames. Each iron core closed single frame is formed by sequentially coiling continuous silicon steel sheets. Each iron core closed single frame is provided with two iron core column single bodies with the cross sections similar to semicircle. The iron core is provided with two iron core columns with the cross sections similar to circle, wherein each iron core column is formed by splicing the two corresponding iron core column single bodies. Each iron core column is sequentially provided with a low-voltage winding T, a low-voltage winding F and a high-voltage winding from inside to outside. The two sides of each high-voltage winding are provided with a first tapping region and a second tapping region respectively. A low-voltage side high-voltage tapping outgoing line is arranged in each first tapping region. A high-voltage side high-voltage tapping outgoing line is arranged in each second tapping region. The two low-voltage side high-voltage tapping outgoing lines are connected together through one non-load voltage regulation switch. The two high-voltage side high-voltage tapping outgoing lines are connected together through the other non-load voltage regulation switch. By means of the rolled iron core traction transformer, the non-load loss can be made low, the non-load current can be made small, noise can be made low, and short circuit resistance can be made high; electrodynamic force generated when the short circuit suddenly occurs can be reduced, and the capacity of the transformer for resisting to the short circuit can be improved.

Description

Volume iron core traction transformer
Technical field
The utility model relates to a kind of volume iron core traction transformer, belongs to transformer technology field.
Background technology
At present, traction transformer is the conventional a kind of power equipment of electric railway, and its operation characteristic is no-load running time long (the gap period of train is unloaded substantially), and capability of overload requires high, and short circuit number of times is many.Traction transformer in the past all adopts laminated core structure, and inner-outer coil is sleeved on iron core successively.Laminated core structure is formed by silicon steel sheet stack, and silicon steel sheet joint can form air gap, and the magnetic resistance of air gap is very high, and loss and no-load current while making zero load increase, and noise is also larger.Silicon steel sheet is sheared, the process of closed assembly can affect the arrangement of magnetic domain, and the loss also can make zero load time is risen.When sleeve type mounting coil, need retain packaging clearance, and the existence in this gap can make the anti-short circuit capability of coil decline.
Utility model content
Technical problem to be solved in the utility model is the defect that overcomes prior art, a kind of volume iron core traction transformer is provided, it not only can make, and no-load loss is low, no-load current is little, noise is little, anti-short circuit capability is strong, and the electric power producing can reduce sudden short circuit time, improve the ability of transformer tolerance short circuit.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of volume iron core traction transformer, it comprises iron core, iron core is put together by the iron core of two the symmetrical annealed processing single frame of remaining silent, and each iron core single frame of remaining silent is reeled and is formed successively by continuous silicon steel sheet, this iron core single frame of remaining silent has the iron core column monomer that two cross sections are semicircular, on iron core, there are two iron core column that pieced together by iron core column monomer and cross section is approximate circle, in described each iron core column, be disposed with from inside to outside low pressure T winding, low pressure F winding and high pressure winding, each high pressure winding both sides be respectively arranged with the first tap region and the second tap region, the first tap region is furnished with the outlet of low-pressure side high-voltage tap, the second tap region is furnished with high-pressure side high-voltage tap outlet, the outlet of two low-pressure side high-voltage taps links together by unloaded tap changer, two high-pressure side high-voltage tap outlets link together by another unloaded tap changer, one side of high pressure winding is provided with the outlet of high pressure winding, low pressure T winding is provided with the outlet of low pressure T winding in the contrary side of high pressure winding outlet direction, low pressure F winding is provided with the outlet of low pressure F winding in the contrary side of high pressure winding outlet direction.
Further in order to make, iron core temperature rise is low, overexcitation ability is strong, and two iron cores are remained silent and between single frame, are provided with the separation trough that can play thermolysis.
Further, in order to make two synchronously pressure regulation of unloaded tap changer, two described unloaded tap changers connect to realize synchronous pressure regulation by switch linkage mechanism.
Further, on the two ends of described low pressure F winding and high pressure winding, be provided with respectively static board.
Further, described static board is welded by the amalgamation of two semicircle copper rings.
Further, described low pressure T winding inner side is provided with T winding skeleton, and between T winding skeleton and iron core column, be provided with the stay with stopping means, the inner side of described low pressure F winding is provided with F winding skeleton, and be also provided with the stay with stopping means between F winding skeleton and low pressure T winding, the inner side of described high pressure winding is provided with high pressure winding skeleton, and is also provided with the stay with stopping means between high pressure winding skeleton and low pressure F winding.
Further, described T winding skeleton and/or F winding skeleton and/or high pressure winding skeleton are made up of cardboard cylinder.
Further, on T winding skeleton, be provided with the driving groove that can be driven by coil winding machine.
Further, when coiling winding, first do not place stay between T winding skeleton and iron core column, the extraordinary transmission mechanism without mould coil winding machine is placed in this position, then carries out the forming operation of T winding skeleton in the above.After completing, carry out successively the coiling work of low pressure T winding, low pressure F winding and high pressure winding.
Further, after all winding techniques complete, put into stay stretching coil between T winding skeleton and iron core column.
Adopt after technique scheme, because the iron core single frame of remaining silent is around forming by the continuous silicon-steel sheet coiled of whole piece, middle without air gap, avoided local flux density too high and cause overheated, noise is large, the bad phenomenon such as exciting current is large, and the iron core after annealing has been eliminated the stress that the course of processing produces, further reduce no-load loss, winding adopts twin columns parallel way, every post high pressure winding is established two tap region, totally four tap region reduce the uneven ampere-turn producing due to tap region between height winding greatly, thereby the electric power having produced while having reduced sudden short circuit, improve the ability of transformer tolerance short circuit, all winding techniques are integral, close structure, mechanical strength is high, anti-short circuit capability is strong.
Brief description of the drawings
Fig. 1 is the generalized section of volume iron core traction transformer of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of iron core of the present utility model;
Fig. 4 is the cross-sectional view of iron core of the present utility model;
Fig. 5 is the coiling schematic diagram of winding of the present utility model;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is the elementary diagram of high pressure winding of the present utility model;
Fig. 8 is the scheme of installation of static board of the present utility model;
Fig. 9 is the scheme of installation of skeleton of the present utility model.
Embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below.
As shown in Fig. 1~4, a kind of volume iron core traction transformer, it comprises iron core 1, iron core 1 is put together by the iron core of two the symmetrical annealed processing single frame 1-1 that remains silent, and each iron core single frame 1-1 that remains silent is reeled and forms successively by continuous silicon steel sheet, this iron core single frame 1-1 that remains silent has the iron core column monomer 1-1-1 that two cross sections are semicircular, on iron core 1, there are two iron core column 1-2 that pieced together by iron core column monomer 1-1-1 and that cross section is approximate circle, on described each iron core column 1-2, be disposed with from inside to outside low pressure T winding 6, low pressure F winding 5 and high pressure winding 4, each high pressure winding 4 both sides be respectively arranged with the first tap region and the second tap region, the first tap region is furnished with low-pressure side high-voltage tap outlet 16, the second tap region is furnished with high-pressure side high-voltage tap outlet 18, the outlet 16 of two low-pressure side high-voltage taps links together by unloaded tap changer 9, two high-pressure side high-voltage tap outlets 18 link together by another unloaded tap changer 9, one side of high pressure winding 4 is provided with high pressure winding outlet 17, low pressure T winding 6 is provided with low pressure T winding outlet 15-1 in a side of high pressure winding outlet 17 opposite directions, low pressure F winding 5 is provided with low pressure F winding outlet 15-2 in a side of high pressure winding outlet 17 opposite directions.Because the iron core single frame 1-1 that remains silent is around forming by the continuous silicon-steel sheet coiled of whole piece, middle without air gap, avoided local flux density too high and cause overheated, noise is large, the bad phenomenon such as exciting current is large, and the iron core after annealing has been eliminated the stress that the course of processing produces, further reduce no-load loss, winding adopts twin columns parallel way, every post high pressure winding 4 is established two tap region, totally four tap region reduce the uneven ampere-turn producing due to tap region between height winding greatly, thereby the electric power having produced while having reduced sudden short circuit, improve the ability of transformer tolerance short circuit.
As Fig. 5, shown in 6, because this iron core 1 is the volume core construction of remaining silent, so all low pressure T windings 6, low pressure F winding 5 and high pressure winding 4 all must form on the iron core column 1-2 of iron core 1 in coiling, low pressure T winding 6, low pressure F winding 5 and high pressure winding 4 are to be directly coiled into one around iron core column 1-2 at special vertical on without mould coil winding machine 3, it is vertical that without mould coil winding machine 3, the forming skeleton 7 with moving winding rotates, wire carries out coiling on forming skeleton 7, turn over etc. and to form coil, on forming skeleton 7, be designed with driving groove, stretching into this driving groove without the trundle 8 of mould coil winding machine 3 can drive forming skeleton 7 to rotate around iron core column 1-2, thereby carry out low pressure T winding 6, the coiling work of low pressure F winding 5 and high pressure winding 4.This is current unique method that can realize the large-scale disc coil of coiling on volume iron core without the vertical winding method of mould.
As shown in Figure 4, two iron cores are remained silent and between single frame 1-1, are provided with the separation trough 2 that can play thermolysis, thereby make that iron core temperature rise is low, overexcitation ability is strong, and the utilance of silicon steel sheet is also greatly improved.The effect one of separation trough is heat radiation, the 2nd, and iron core is divided into after two semicircular, while making silicon steel sheet cylinder material larger in iron core diameter, also can cut out a piece of cloth in a way with the minimum material to make two or more articles of clothing completely.
As shown in Fig. 2,7, two unloaded tap changers 9 connect to realize synchronous pressure regulation by switch gearing structure 11.
As shown in Figure 1, in the end walls of low pressure F winding 5 and high pressure winding 4, be provided with respectively static board 10.Static board 10 is welded by two semicircle copper ring 10-1 amalgamation.Static board 10 is placed in pairs, the low pressure F winding 5 adjacent with high pressure winding 4 also placed static board 10, as shown in Figure 8, in order static board 10 to be installed on iron core 1 remaining silent, static board 10 adopts two semicircular composite structure, on iron core 1, after amalgamation, weld with the semicircle copper ring 10-1 of all Edge Blends, weld grinding is smooth, and the static board 10 of high pressure winding 4 is also made by above method.
As shown in Fig. 2,8, low pressure T winding 6 inner sides are provided with T winding skeleton 14, and between T winding skeleton 14 and iron core column 1-2, be provided with the stay 19 with stopping means, the inner side of low pressure F winding 5 is provided with F winding skeleton 13, and be also provided with the stay 19 with stopping means between F winding skeleton 13 and low pressure T winding 6, the inner side of high pressure winding 4 is provided with high pressure winding skeleton 12, and is also provided with the stay 19 with stopping means between high pressure winding skeleton 12 and low pressure F winding 5.T winding skeleton 14 and/or F winding skeleton 13 and/or high pressure winding skeleton 12 are made up of cardboard cylinder.On T winding skeleton 14, be provided with the driving groove that can be driven by coil winding machine.When coiling winding, first do not place stay 19 between T winding skeleton 14 and iron core column 1-2, between coil with stopping means, there is stay displacement when preventing coil winding in all stays.The extraordinary transmission mechanism without mould coil winding machine is placed in this position, then carries out the forming operation of T winding skeleton 14 in the above.After completing, carry out successively the coiling work of low pressure T winding 6, low pressure F winding 5 and high pressure winding 4.After all winding techniques complete, put into stay 19 stretching coils between T winding skeleton 14 and iron core column 1-2.
All coils adopts cardboard cylinder as skeleton, cardboard cylinder adopts the technique of directly carrying out amalgamation with it at device, as shown in Figure 9, the adjacent stay 19 of cardboard cylinder lap-joint of low pressure F winding 5 is designed to double as the shape of internal mold, after the cardboard cylinder overlap joint slope brush coating of low pressure F winding 5, push down and be cured moulding with external mold 20 again, after curing molding just can be on the cardboard cylinder of low pressure F winding 5 coiling low pressure F winding 5, the cardboard cylinder of low pressure T winding 6, the cardboard cylinder manufacture method of high pressure winding 4 also can be made as stated above.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (8)

1. a volume iron core traction transformer, it is characterized in that: it comprises iron core (1), iron core (1) is put together by the iron core of two the symmetrical annealed processing single frame (1-1) of remaining silent, and each iron core single frame (1-1) of remaining silent is reeled and is formed successively by continuous silicon steel sheet, this iron core single frame (1-1) of remaining silent has the iron core column monomer (1-1-1) that two cross sections are semicircular, on iron core (1), there are two iron core column (1-2) that pieced together by iron core column monomer (1-1-1) and that cross section is approximate circle, in described each iron core column (1-2), be disposed with from inside to outside low pressure T winding (6), low pressure F winding (5) and high pressure winding (4), each high pressure winding (4) both sides be respectively arranged with the first tap region and the second tap region, the first tap region is furnished with low-pressure side high-voltage tap outlet (16), the second tap region is furnished with high-pressure side high-voltage tap outlet (18), two low-pressure side high-voltage taps outlet (16) links together by unloaded tap changer (9), two high-pressure side high-voltage tap outlets (18) link together by another unloaded tap changer (9), one side of high pressure winding (4) is provided with high pressure winding outlet (17), low pressure T winding (6) is provided with low pressure T winding outlet (15-1) in a side of high pressure winding outlet (17) opposite direction, low pressure F winding (5) is provided with low pressure F winding outlet (15-2) in a side of high pressure winding outlet (17) opposite direction.
2. volume iron core traction transformer according to claim 1, is characterized in that: two described iron cores are remained silent and between single frame (1-1), are provided with the separation trough (2) that can play thermolysis.
3. volume iron core traction transformer according to claim 1, is characterized in that: described two unloaded tap changers (9) connect to realize synchronous pressure regulation by switch gearing structure (11).
4. volume iron core traction transformer according to claim 1, is characterized in that: on described low pressure F winding (5) and the two ends of high pressure winding (4), be provided with respectively static board (10).
5. volume iron core traction transformer according to claim 4, is characterized in that: described static board (10) is welded by two semicircle copper rings (10-1) amalgamation.
6. volume iron core traction transformer according to claim 1, it is characterized in that: described low pressure T winding (6) inner side is provided with T winding skeleton (14), and between T winding skeleton (14) and iron core column (1-2), be provided with the stay (19) with stopping means, the inner side of described low pressure F winding (5) is provided with F winding skeleton (13), and between F winding skeleton (13) and low pressure T winding (6), be also provided with the stay (19) with stopping means, the inner side of described high pressure winding (4) is provided with high pressure winding skeleton (12), and between high pressure winding skeleton (12) and low pressure F winding (5), be also provided with the stay (19) with stopping means.
7. volume iron core traction transformer according to claim 6, is characterized in that: described T winding skeleton (14) and/or F winding skeleton (13) and/or high pressure winding skeleton (12) are made up of cardboard cylinder.
8. according to the volume iron core traction transformer described in claim 6 or 7, it is characterized in that: on described T winding skeleton (14), be provided with the driving groove that can be driven by coil winding machine.
CN201420270291.1U 2014-05-26 2014-05-26 Rolled iron core traction transformer Withdrawn - After Issue CN203871160U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420270291.1U CN203871160U (en) 2014-05-26 2014-05-26 Rolled iron core traction transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420270291.1U CN203871160U (en) 2014-05-26 2014-05-26 Rolled iron core traction transformer

Publications (1)

Publication Number Publication Date
CN203871160U true CN203871160U (en) 2014-10-08

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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103996507A (en) * 2014-05-26 2014-08-20 西南交通大学 Rolled iron core traction transformer
CN105469960A (en) * 2016-01-14 2016-04-06 天威保变(合肥)变压器有限公司 220kV three-phase integrated traction transformer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103996507A (en) * 2014-05-26 2014-08-20 西南交通大学 Rolled iron core traction transformer
WO2015180483A1 (en) * 2014-05-26 2015-12-03 中国铁路总公司 Rolled iron core traction transformer
CN103996507B (en) * 2014-05-26 2016-02-24 中国铁路总公司 Volume iron core traction transformer
US9812252B2 (en) 2014-05-26 2017-11-07 Changzhou Pacific Electric Power Equipment Group Co., Ltd. Rolled iron core traction transformer
CN105469960A (en) * 2016-01-14 2016-04-06 天威保变(合肥)变压器有限公司 220kV three-phase integrated traction transformer

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C14 Grant of patent or utility model
GR01 Patent grant
C25 Abandonment of patent right or utility model to avoid double patenting
AV01 Patent right actively abandoned

Granted publication date: 20141008

Effective date of abandoning: 20160224