CN207319874U - Single-phase self-coupling railway traction transformer machine body structure - Google Patents

Abstract

The utility model discloses a body structure of a single-phase auto-coupling railway traction transformer, which belongs to the field of transformers. The utility model includes coil A and coil B respectively wound on the two columns of the double-column type iron core, coil A is composed of winding one, winding two, winding three and winding four, and coil B is composed of winding five, winding six and winding seven 1. Winding eight is composed; one end of winding one leads out to be zero phase, and the other end leads out in series with winding four, winding seven and winding six, and the other end of winding six leads out to be phase B; one end of winding two leads out to be phase A, The other end is connected in series with winding three, winding eight, and winding five, and the other end of winding five is connected with the zero-phase line, thus forming a complete electrical circuit. The transformer with the structure of the utility model is used as a railway traction transformer, which greatly improves the power supply quality of locomotives, reduces the interference of adjacent lines, expands the distance between adjacent substations, reduces the number of substations, greatly reduces costs, and improves economic benefits .

Description

Body structure of single-phase auto-coupling railway traction transformer

technical field

The utility model relates to the field of transformers, in particular to a body structure of a single-phase self-coupling railway traction transformer.

Background technique

The type selection of traction transformer is the key to determine whether the design of traction power supply system is reasonable, easy to realize and beneficial to reduce operating and maintenance costs. At present, domestic design experience of traction transformers in the design of railway traction power supply is less, and due to different situations, foreign transformer types cannot be copied.

The existing railway traction transformers are generally single-phase railway traction transformers. The current single-phase railway traction transformer coil structure and wiring structure have poor power supply quality, adjacent lines interfere, and the distance between substations is short, so it is necessary to build multiple substations. Therefore, the cost is high.

Utility model content

In order to make up for the deficiencies of the existing technology and solve the problems of poor power supply quality of single-phase railway traction transformers, interference of adjacent lines, and short distance between substations in the prior art, the utility model provides a single-phase self-coupling railway traction transformer Transformer body structure.

The technical scheme of the utility model is:

A body structure of a single-phase auto-coupling railway traction transformer, comprising a coil A and a coil B respectively wound on two columns of a double-column iron core;

The coil A is composed of winding one A1, winding two A2, winding three A3, and winding four A4; the winding one A1, winding two A2, winding three A3, and winding four A4 are respectively wound on the first winding formed cardboard tube A9, on the second winding formed cardboard tube A8, the third winding formed cardboard tube A7, and the fourth winding formed cardboard tube A6; between the winding one A1 and the winding two A2, between the winding two A2 and the winding three A3 Between the third winding A3 and the fourth winding A4 are all insulated through the oil gap of the paper tube and the stay; the fourth winding is composed of a hard paper tube A6 fixed on the first iron core column A5; the winding one A1, the second winding The tops of A2, winding three A3, and winding four A4 are connected together by the first pressing plate A10; the bottoms of the winding one A1, winding two A2, winding three A3, and winding four A4 are connected by the first supporting plate A11;

The coil B is composed of winding five B1, winding six B2, winding seven B3, and winding eight B4; the winding five B1, winding six B2, winding seven B3, and winding eight B4 are respectively wound on the fifth winding forming cardboard tube B9, the sixth winding formed cardboard tube B8, the seventh winding formed cardboard tube B7, the eighth winding formed cardboard tube B6; between the fifth winding B1 and the winding six B2, between the winding six B2 and the winding seven B3 Between the winding seven B3 and the winding eight B4 are insulated through the oil gap of the paper tube and the stay; the eighth winding composed of a hard paper tube B6 is fixed on the second iron core column B5; the winding five B1, winding six The tops of B2, winding seven B3, and winding eight B4 are connected as a whole by a second pressing plate B10; the bottoms of winding five B1, winding six B2, winding seven B3, and winding eight B4 are connected by a second supporting plate B11.

As a preferred solution, one end of winding one (A1) leads out to the neutral wire, and the other end leads out in series with winding four (A4), winding seven (B3) and winding six (B2), and the other end of winding six (B2) leads out It is phase B; one end of winding two (A2) leads out to phase A, the other end leads out in series with winding three (A3), winding eight (B4), winding five (B1), and the other end of winding five (B1) leads out line is connected to the neutral line. This constitutes a complete electrical circuit.

As an optimal solution, each winding adopts a continuous structure; the wires in each winding use self-adhesive transposition wires. Each winding adopts a continuous structure, the coil has good heat dissipation, and the structure is more stable and reliable; the wires in each winding are self-adhesive transposed wires, which strengthen the mechanical strength of the wires and improve the short-circuit resistance of the transformer.

As a preferred solution, the first pressing plate A10 , the first supporting plate A11 , the second pressing plate B10 and the second supporting plate B11 all cooperate with pressing nails so that the windings are firmly and stably fixed as a whole.

The beneficial effects of the utility model are:

The utility model is an autotransformer suitable for single-phase railway traction transformers. As a railway traction transformer, the utility model has a high quality power supply for locomotives, reduces the interference of adjacent lines, and can expand the distance between two adjacent substations. The distance between them reduces the number of substations, which greatly reduces the cost and improves the economic benefits.

Moreover, the winding of the utility model is fixed firmly, which improves the short-circuit resistance capability of the winding and makes the operation of the transformer safer and more reliable.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of the connection relationship between the coil A and the iron core column in the body structure of the single-phase auto-coupling railway traction transformer of the present invention;

Fig. 2 is a structural schematic diagram of the connection relationship between the coil B and the iron core column in the body structure of the single-phase auto-coupling railway traction transformer of the present invention;

Fig. 3 is the top view structure diagram of the utility model single-phase auto-coupling railway traction transformer body structure;

Fig. 4 is a schematic diagram of the body structure circuit connection structure of the single-phase auto-coupling railway traction transformer of the present invention.

Detailed ways

Example 1

As shown in Figures 1 to 4, a single-phase autotransformer railway traction transformer body structure includes coil A and coil B respectively wound on two columns of a double-column iron core.

Coil A is composed of winding one A1, winding two A2, winding three A3 and winding four A4; Winding formed cardboard tube A8, third winding formed cardboard tube A7, fourth winding formed cardboard tube A6; between winding one A1 and winding two A2, between winding two A2 and winding three A3, between winding three A3 and Winding 4 A4 is insulated through paper tube oil gaps and stays; the fourth winding is composed of cardboard tube A6 fixed on the first iron core column A5; winding 1 A1, winding 2 A2, winding 3 A3, winding 4 A4 The top is connected as a whole by the first pressing plate A10; the bottoms of the first winding A1, the second winding A2, the third winding A3 and the fourth winding A4 are connected as a whole by the first supporting plate A11.

Coil B is composed of winding five B1, winding six B2, winding seven B3, and winding eight B4; Winding formed cardboard tube B8, seventh winding formed cardboard tube B7, eighth winding formed cardboard tube B6; between winding five B1 and winding six B2, between winding six B2 and winding seven B3, between winding seven B3 and Windings eight and B4 are insulated through paper tube oil gaps and stays; the eighth winding is composed of cardboard tubes B6 and fixed to the second iron core column B5; winding five B1, winding six B2, winding seven B3, and winding eight B4 The top is connected as a whole by the second pressing plate B10; the bottoms of the winding five B1, the winding six B2, the winding seven B3 and the winding eight B4 are connected as a whole by the second supporting plate B11.

One end of winding one A1 leads out to the zero line, the other end leads out in series with winding four A4, winding seven B3, winding six B2, the other end of winding six B2 leads out to phase B; one end of winding two A2 leads out to phase A , the other end is connected in series with winding three A3, winding eight B4, and winding five B1, and the other end of winding five B1 is connected to the zero line; thereby forming a complete electrical circuit.

As an optimal solution, each winding adopts a continuous structure; the wires in each winding use self-adhesive transposition wires. Each winding adopts a continuous structure, the coil has good heat dissipation, and the structure is more stable and reliable; the wires in each winding are self-adhesive transposed wires, which strengthen the mechanical strength of the wires and improve the short-circuit resistance of the transformer.

As a preferred solution, the first pressing plate A10 , the first supporting plate A11 , the second pressing plate B10 and the second supporting plate B11 all cooperate with pressing nails to securely and stably fix the windings as a whole.

Claims (4)

1. A kind of 1. single-phase self-coupling railway traction transformer machine body structure, it is characterised in that：Including rotating around in two-legs type core two Loop A and coil B on column；

   The loop A is by winding one（A1）, winding two（A2）, winding three（A3）, winding four（A4）Form；The winding one （A1）, winding two（A2）, winding three（A3）, winding four（A4）First is wound on respectively around composing type cardboard cylinder（A9）, second around Composing type cardboard cylinder（A8）, the tertiary winding shaping cardboard cylinder（A7）, the 4th around composing type cardboard cylinder（A6）On；The winding one （A1）With winding two（A2）Between, winding two（A2）With winding three（A3）Between, winding three（A3）With winding four（A4）Between Pass through paper web oil clearance and stay coordinated insulation；Described 4th around composing type cardboard cylinder（A6）It is fixed on the first iron core column（A5）； The winding one（A1）, winding two（A2）, winding three（A3）, winding four（A4）Top use the first pressing plate（A10）It is linked as one Body；The winding one（A1）, winding two（A2）, winding three（A3）, winding four（A4）Bottom use the first supporting plate（A11）It is linked as One；

   The coil B is by winding five（B1）, winding six（B2）, winding seven（B3）, winding eight（B4）Form；The winding five （B1）, winding six（B2）, winding seven（B3）, winding eight（B4）The 5th is wound on respectively around composing type cardboard cylinder（B9）, the 6th around Composing type cardboard cylinder（B8）, the 7th around composing type cardboard cylinder（B7）, the 8th around composing type cardboard cylinder（B6）On；The winding five （B1）With winding six（B2）Between, winding six（B2）With winding seven（B3）Between, winding seven（B3）With winding eight（B4）Between Pass through paper web oil clearance and stay coordinated insulation；Described 8th around composing type cardboard cylinder（B6）It is fixed on the second iron core column（B5）； The winding five（B1）, winding six（B2）, winding seven（B3）, winding eight（B4）Top use the second pressing plate（B10）It is linked as one Body；The winding five（B1）, winding six（B2）, winding seven（B3）, winding eight（B4）Bottom use the second supporting plate（B11）It is linked as One.
2. 2. single-phase self-coupling railway traction transformer machine body structure as claimed in claim 1, it is characterised in that：Winding one（A1）One It is zero curve to bring out a lead-out wire, and the other end, which is lifted one's head, concatenates winding four（A4）, winding seven（B3）, winding six（B2）, winding six（B2） The other end, which is lifted one's head, leads to B phases；Winding two（A2）One end lift one's head and lead to A phases, the other end is lifted one's head concatenation winding three（A3）, around Group eight（B4）, winding five（B1）, winding five（B1）Other end lead-out wire of lifting one's head connect with zero curve.
3. 3. single-phase self-coupling railway traction transformer machine body structure as claimed in claim 1 or 2, it is characterised in that：Each winding is adopted Use continuous structure；Conducting wire selects tack transposed conductor in each winding.
4. 4. single-phase self-coupling railway traction transformer machine body structure as claimed in claim 1 or 2, it is characterised in that：First pressure Plate（A10）, the first supporting plate（A11）, the second pressing plate（B10）With the second supporting plate（B11）Nail pressing is coordinated to make each winding firmly steady Fixed fixation is integral.