CN113451018B - A power transformer winding structure - Google Patents

Abstract

The invention relates to the technical field of transformer windings and discloses a power transformer winding structure which comprises an iron core column, wherein a coil is arranged at the side end of the iron core column, a cushion block is arranged at the lower end of the iron core column, a hollow block is arranged at the lower end of the cushion block, a base is arranged at the lower end of the hollow block, a connecting pipe is arranged on the outer surface of the front end of the hollow block, a heat dissipation air pipe is arranged at the front end of the connecting pipe, a heat dissipation fan is arranged at the side end of the heat dissipation air pipe, a connecting piece is arranged at the upper end of the iron core column, and a first mounting bolt is arranged on the outer surface of the front end of the connecting piece. This power transformer winding structure, simple structure, convenient operation, the connectivity is strong, has good insulating nature, and the installation and the dismantlement of being convenient for enhance the security have good radiating effect, strengthen inside radiating efficiency, improve the life of winding, and the installation and the dismantlement of being convenient for are convenient for carry on spacingly to it, reinforcing installation stability.

Description

A power transformer winding structure

technical field

The invention relates to the technical field of transformer windings, in particular to a power transformer winding structure.

Background technique

Each phase of a three-winding transformer has three windings. When one winding is connected to the AC power supply, the other two windings induce different potentials. This transformer is used for loads that require two different voltage levels, power plants and substations. There are usually three different levels of voltage, so three-winding transformers are widely used in power systems. The high, medium and low voltage windings of each phase are placed on the same core column. For reasonable insulation use, the high voltage winding is usually placed on the outermost layer. The medium and low voltage windings are placed on the inner layer.

The existing transformer windings have certain drawbacks in use. First, the transformer windings have poor connectivity during use, and the direct isolation of each coil is poor, resulting in internal current disorder, affecting the use effect, and weak insulation. Second, Due to the long-term use of the windings, the internal heat is high and the heat dissipation is poor, which leads to fires and poses a safety hazard to the surrounding residents. Finally, the windings are installed inside the transformer, which is inconvenient for maintenance and has poor connectivity, enhancing maintenance personnel. Labor intensity, for this, we propose a power transformer winding structure.

SUMMARY OF THE INVENTION

(1) Technical problems solved

Aiming at the deficiencies of the prior art, the present invention provides a power transformer winding structure, which has enhanced overall connectivity, strong insulation, easy installation and disassembly of the internal insulation baffle, strong heat dissipation function, and enhanced The internal heat dissipation efficiency improves the service life of the winding, and at the same time, it has a dust-proof function to avoid dust erosion affecting the use effect of the winding. It has strong connectivity and is easy to slide and pull out inside the transformer. Reduce the labor intensity of maintenance personnel.

(2) Technical solutions

In order to achieve the above-mentioned features that enhance the overall connectivity, have strong insulation, make the internal insulation partition easy to install and disassemble, have strong heat dissipation function, enhance internal heat dissipation efficiency, improve the service life of windings, and have dustproof function. , to avoid dust erosion affecting the use effect of the winding, to have a limit function, to enhance the installation stability, to facilitate maintenance, and to reduce the labor intensity of maintenance personnel, the present invention provides the following technical solutions: a power transformer winding structure, including an iron core column , the side end of the iron core column is provided with a coil, the lower end of the iron core column is provided with a cushion block, the lower end of the cushion block is provided with a hollow block, the lower end of the hollow block is provided with a base, the hollow block The outer surface of the front end is provided with a connecting pipe, the front end of the connecting pipe is provided with a cooling air pipe, the side end of the cooling air pipe is provided with a cooling fan, the upper end of the iron core column is provided with a connecting piece, the connecting piece The outer surface of the front end is provided with a No. 1 mounting bolt.

Preferably, the coil and the iron core column are movably connected, the number of the iron core column is three, and they are arranged in an array, the shape of the iron core column is cylindrical, and the number of the coils is Three are arranged in an array, the spacer block and the iron core column are fixedly connected, and the hollow block and the spacer block are fixedly connected.

Preferably, the hollow block and the connecting pipe are fixedly connected, the number of the connecting pipes is three, and they are arranged in an array, the cooling air pipe and the connecting pipe are fixedly connected, and the cooling air pipe is in a fixed connection. The shape of the pipe is cylindrical, the cooling air pipe and the cooling fan are fixedly connected, the number of the cooling fans is two, and the cooling fans are arranged symmetrically.

Preferably, the connecting piece and the iron core column are threadedly connected by No. 1 mounting bolts, the number of No. 1 mounting bolts is several, and they are arranged in an array, and the upper end of the connecting piece is provided with a ventilation port, The ventilation openings penetrate through the outer surface of the upper end of the connecting piece, and the number of the ventilation openings is three, which are arranged in an array.

Preferably, the upper end of the air vent is provided with a dust-proof net, the dust-proof net and the vent are movably connected, the number of the dust-proof nets is three, and they are arranged in an array. The upper end of the hoisting ring is provided with a hoisting ring, the hoisting ring and the connecting piece are fixedly connected, and the number of the hoisting ring is several and arranged in an array.

Preferably, an insulating baffle is arranged between the connecting piece and the hollow block, the number of the insulating baffles is two, and they are arranged symmetrically, and an installation block is arranged on the upper end of the insulating baffle, and the installation The number of blocks is several, and they are arranged symmetrically. A hinge is arranged between the installation block and the insulating partition, and the hinge is fixedly connected with the insulating partition and the installation block. The insulating partition is There is an active connection with the installation block through hinges.

Preferably, the front end of the mounting block is provided with No. 2 mounting bolts, and the mounting block and the connecting piece are threadedly connected by the No. 2 mounting bolts, and the number of the No. 2 mounting bolts is several and arranged symmetrically.

Preferably, the outer surface of the upper end of the base is provided with a chute, the chute is embedded in the outer surface of the upper end of the base, the number of the chute is two, and they are arranged symmetrically, and the lower end of the hollow block is provided with There is a slider, the slider and the hollow block are fixedly connected, the number of the sliders is two, and they are arranged symmetrically, and the hollow block and the base are slidingly connected with the slider through the chute .

Preferably, the outer surface of the upper end of the base is provided with fixed installation holes, the fixed installation holes penetrate through the outer surface of the upper end of the base, the number of the fixed installation holes is four, and they are arranged in an array, and the hollow block A limit plate is set at the front end of the limit plate, and the limit plate and the hollow block are fixedly connected. The upper end of the limit plate is provided with a limit hole, and the limit hole penetrates through the outer surface of the upper end of the limit plate. The upper end of the chute is provided with positioning holes, the positioning holes penetrate through the outer surface of the upper end of the chute, the number of the positioning holes is several, and the positioning holes are arranged in an array.

(3) Beneficial effects

Compared with the prior art, the present invention provides a power transformer winding structure, which has the following beneficial effects:

1. The winding structure of the power transformer is provided with insulating partitions to enhance the insulation between each coil and improve the use and installation. It is provided with hinges to cooperate with the installation block to enhance the connection. Threaded connection enhances connectivity, making it easy to install and remove.

2. The winding structure of the power transformer is provided with a connecting pipe at the front end of the iron core column, and the air is blown into the cooling air pipe by the cooling fan to dissipate heat to the iron core column, enhance the internal heat dissipation effect, and blow the heat out through the vent. , At the same time, a dust-proof net is set to prevent dust from entering the iron core column from the air, which affects the use effect of the internal current.

3. The winding structure of the power transformer, by setting the cooperation between the chute and the slider, enables the winding to slide on the base, making it easy to pull out from the inside of the transformer, convenient for maintenance, and reduce the labor intensity of the staff. The positioning hole and the limit hole make it limit the position through the movable pin connection inside the transformer, which enhances the stability of the winding installation and improves the practicability.

Description of drawings

1 is an overall schematic diagram of a power transformer winding structure of the present invention;

2 is a top view of a power transformer winding structure of the present invention;

3 is a side view of a power transformer winding structure of the present invention;

4 is a front view of a power transformer winding structure of the present invention;

5 is a rear view of a power transformer winding structure of the present invention;

FIG. 6 is a partial disassembly diagram of a power transformer winding structure according to the structure of the present invention.

In the picture: 1. Iron core column; 2. Coil; 3. Spacer block; 4. Hollow block; 5. Base; 6. Connecting pipe; 7. Cooling air pipe; 8. Cooling fan; 9. Connecting piece; 10. No. 1 mounting bolt; 11. Air vent; 12. Dust filter; 13. Lifting ring; 14. Insulation baffle; 15. Mounting block; 16. Hinge; 17. No. 2 mounting bolt; 18. Chute; 19. Slider; 20. Fixed installation hole; 21. Limiting plate; 22. Limiting hole; 23. Positioning hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-6, a power transformer winding structure includes an iron core column 1, the side end of the iron core column 1 is provided with a coil 2, the lower end of the iron core column 1 is provided with a spacer 3, and the lower end of the spacer block 3 is provided with There is a hollow block 4, the lower end of the hollow block 4 is provided with a base 5, the outer surface of the front end of the hollow block 4 is provided with a connecting pipe 6, the front end of the connecting pipe 6 is provided with a cooling air pipe 7, and the side end of the cooling air pipe 7 is provided with a cooling air pipe 7. In the fan 8 , the upper end of the iron core column 1 is provided with a connecting piece 9 , and the outer surface of the front end of the connecting piece 9 is provided with a No. 1 mounting bolt 10 .

There is an active connection between the coil 2 and the core column 1, the number of the core column 1 is three, and they are arranged in an array, the shape of the core column 1 is cylindrical, and the number of the coil 2 is three, and it is arranged in an array Arrangement, the spacer block 3 and the iron core column 1 are fixedly connected, the hollow block 4 and the spacer block 3 are fixedly connected, and the spacer block 3 is provided to protect the coil 2 .

There is a fixed connection between the hollow block 4 and the connecting pipe 6, the number of the connecting pipes 6 is three, and they are arranged in an array. The cooling air duct 7 and the cooling fan 8 are fixedly connected, and the number of the cooling fans 8 is two, and they are arranged symmetrically.

The connecting piece 9 and the iron core column 1 are connected by thread through No. 1 mounting bolts 10. The number of No. 1 mounting bolts 10 is several, and they are arranged in an array. The upper end of the connecting piece 9 is provided with a vent 11. The vent 11 Running through the outer surface of the upper end of the connecting piece 9, there are three ventilation openings 11 arranged in an array, and the connection is enhanced by the threaded connection of the No. 1 mounting bolt 10, making it easy to install and disassemble.

The upper end of the air vent 11 is provided with a dustproof net 12, and the dustproof net 12 and the air vent 11 are movably connected, the number of the dustproof nets 12 is three, and they are arranged in an array, and the upper end of the connecting piece 9 is provided with a lifting ring 13. The lifting ring 13 and the connector 9 are fixedly connected. The number of the lifting ring 13 is several and arranged in an array. The dustproof net 12 is provided to make it have a dustproof effect to prevent dust from eroding the interior.

Between the connector 9 and the hollow block 4, an insulating baffle 14 is arranged. The number of the insulating baffles 14 is two, and they are arranged symmetrically. The upper end of the insulating baffle 14 is provided with a mounting block 15, and the number of the mounting block 15 is A number of them are arranged symmetrically. A hinge 16 is arranged between the mounting block 15 and the insulating partition 14. The hinge 16 is fixedly connected to the insulating partition 14 and the mounting block 15. The insulating partition 14 and the mounting block The hinges 16 are movably connected between the 15, and the hinges 16 are connected with the mounting block 15, which makes it easy to install and disassemble, and is convenient and practical.

The front end of the mounting block 15 is provided with a No. 2 mounting bolt 17, and the No. 2 mounting bolt 17 is used for threaded connection between the mounting block 15 and the connecting piece 9. The number of the No. 2 mounting bolt 17 is several and is symmetrically arranged. The installation bolts 17 are connected to enhance the connectivity and facilitate disassembly.

The outer surface of the upper end of the base 5 is provided with a chute 18, and the chute 18 is embedded on the outer surface of the upper end of the base 5. The number of the chute 18 is two, and they are arranged symmetrically. The lower end of the hollow block 4 is provided with a slider 19, The slider 19 and the hollow block 4 are fixedly connected. The number of the sliders 19 is two, and they are arranged symmetrically. The slot 18 cooperates with the slider 19 to enhance the connectivity and facilitate the maintenance and replacement of the inner winding of the transformer.

The outer surface of the upper end of the base 5 is provided with a fixed installation hole 20. The fixed installation hole 20 runs through the outer surface of the upper end of the base 5. The number of the fixed installation holes 20 is four, and they are arranged in an array. The front end of the hollow block 4 is provided with a limited position The plate 21, the limit plate 21 and the hollow block 4 are fixedly connected, the upper end of the limit plate 21 is provided with a limit hole 22, the limit hole 22 penetrates the outer surface of the upper end of the limit plate 21, and the upper end of the chute 18 is provided There are positioning holes 23, which run through the outer surface of the upper end of the chute 18. The number of positioning holes 23 is several, and they are arranged in an array. Installation stability.

When working, the user installs the winding into the transformer through the fixed installation hole 20 on the base 5, and aligns the limit hole 22 on the limit plate 21 with the positioning hole 23, and uses the movable pin to fix it to enhance the installation stability. , through the cooling fan 8, the wind is blown into the cooling air duct 7, and the iron core column 1 is dissipated to enhance the internal heat dissipation effect, and the heat is blown out through the ventilation opening 11, and a dustproof net 12 is provided at the same time to prevent dust from entering from the air. The inside of the iron core column 1 affects the use effect of the internal current. The insulating spacer 14 is provided to enhance the insulation between the coils 2 and improve the use and installation. The hinge 16 is provided to cooperate with the installation block 15 to enhance the connection. , through the No. 2 mounting bolt 17 to threadedly connect it to enhance the connection and make it easy to install and disassemble. If the interior needs to be overhauled, the staff will remove the movable pin and pass the chute 18 and the slider 19. The cooperation between the windings enables the winding to slide on the base 5, making it easy to be pulled out from the inside of the transformer, which is convenient for maintenance, reduces the labor intensity of the staff, and improves the practicability.

To sum up, the winding structure of the power transformer is provided with insulating baffles 14 to enhance the insulation between the coils 2 and improve the use and installation. The No. 2 mounting bolts 17 are screwed together to enhance the connection and make it easy to install and disassemble. By arranging a connecting pipe 6 at the front end of the iron core column 1, the cooling fan 8 blows the wind into the cooling air pipe 7, and the The iron core column 1 conducts heat dissipation to enhance the internal heat dissipation effect. The heat is blown out through the air vent 11. At the same time, a dustproof net 12 is provided to prevent dust from entering the iron core column 1 from the air and affect the use effect of the internal current. The cooperation between the slot 18 and the slider 19 enables the winding to slide on the base 5, making it easy to pull out from the inside of the transformer, facilitate maintenance, reduce the labor intensity of the staff, and pass the positioning hole 23 and the limit hole 22. , so that it can be limited in the transformer through the movable pin connection, which can enhance the stability of the winding installation and improve the practicability.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A winding structure of a power transformer, comprising an iron core column (1), characterized in that: the side end of the iron core column (1) is provided with a coil (2), and the lower end of the iron core column (1) is provided with a coil (2). There is a spacer (3), the lower end of the spacer (3) is provided with a hollow block (4), the lower end of the hollow block (4) is provided with a base (5), and the front end of the hollow block (4) is outside The surface is provided with a connecting pipe (6), the front end of the connecting pipe (6) is provided with a cooling air pipe (7), the side end of the cooling air pipe (7) is provided with a cooling fan (8), and the iron core is provided with a cooling fan (8). The upper end of the column (1) is provided with a connecting piece (9), the outer surface of the front end of the connecting piece (9) is provided with a No. 1 mounting bolt (10), and the outer surface of the upper end of the base (5) is provided with a chute (18). ), the chute (18) is embedded in the outer surface of the upper end of the base (5), the number of the chute (18) is two, and they are arranged symmetrically, and the lower end of the hollow block (4) is provided with A slider (19), the slider (19) and the hollow block (4) are fixedly connected, the number of the sliders (19) is two, and they are arranged symmetrically, the hollow block (4) ) and the base (5) are slidably connected with the slider (19) through the chute (18), the outer surface of the upper end of the base (5) is provided with a fixed installation hole (20), the fixed installation hole (20) ) runs through the outer surface of the upper end of the base (5), the number of the fixed mounting holes (20) is four, and they are arranged in an array, and the front end of the hollow block (4) is provided with a limit plate (21), so The limiting plate (21) and the hollow block (4) are fixedly connected, the upper end of the limiting plate (21) is provided with a limiting hole (22), and the limiting hole (22) penetrates through the limiting plate (21) on the outer surface of the upper end, the upper end of the chute (18) is provided with a positioning hole (23), the positioning hole (23) runs through the outer surface of the upper end of the chute (18), the positioning hole (23) ) is several and arranged in an array. 2 . The winding structure of a power transformer according to claim 1 , wherein the coil ( 2 ) and the iron core column ( 1 ) are movably connected, and the number of the iron core column ( 1 ) is 2 . three, and arranged in an array, the shape of the iron core column (1) is cylindrical, the number of the coils (2) is three, and arranged in an array, the spacer (3) and the iron The core pillars (1) are fixedly connected, and the hollow block (4) and the spacer block (3) are fixedly connected. 3 . The winding structure of a power transformer according to claim 1 , wherein the hollow block ( 4 ) and the connecting pipe ( 6 ) are fixedly connected, and the number of the connecting pipes ( 6 ) is three. 4 . and arranged in an array, the cooling air duct (7) and the connecting pipe (6) are fixedly connected, the shape of the cooling air duct (7) is cylindrical, and the cooling air duct (7) There is a fixed connection with the cooling fan (8), the number of the cooling fan (8) is two, and the cooling fan (8) is symmetrically arranged. 4 . The winding structure of a power transformer according to claim 1 , wherein the connecting piece ( 9 ) and the iron core column ( 1 ) are connected by a thread through a No. 1 mounting bolt ( 10 ). The number of No. 1 mounting bolts (10) is several and arranged in an array. The upper end of the connecting piece (9) is provided with a ventilation opening (11), and the ventilation opening (11) penetrates through the connecting piece (9). On the outer surface of the upper end, the number of the ventilation openings (11) is three, and they are arranged in an array. 5. The winding structure of a power transformer according to claim 4, characterized in that: the upper end of the ventilation opening (11) is provided with a dustproof net (12), and the dustproof net (12) is connected to the ventilation opening (12). 11) There is an active connection between them, the number of the dustproof nets (12) is three, and they are arranged in an array, the upper end of the connecting piece (9) is provided with a lifting ring (13), and the lifting ring (13) There is a fixed connection with the connecting piece (9), the number of the lifting rings (13) is several, and they are arranged in an array. 6 . The winding structure of a power transformer according to claim 1 , wherein an insulating partition ( 14 ) is arranged between the connecting piece ( 9 ) and the hollow block ( 4 ), and the insulating partition ( 14) The number is two, and they are arranged symmetrically. The upper end of the insulating partition plate (14) is provided with a mounting block (15), and the number of the mounting block (15) is several and is symmetrically arranged. A hinge (16) is arranged between the mounting block (15) and the insulating partition (14), and the hinge (16) and the insulating partition (14) and the mounting block (15) are all fixedly connected , the insulating partition plate (14) and the installation block (15) are movably connected through a hinge (16). 7 . The winding structure of a power transformer according to claim 6 , wherein: the front end of the mounting block ( 15 ) is provided with a No. 2 mounting bolt ( 17 ), and the mounting block ( 15 ) is connected to the connecting piece ( 9 ). 8 . ) is threadedly connected by No. 2 mounting bolts (17), and the number of the No. 2 mounting bolts (17) is several and arranged symmetrically.

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