CN215299033U - High-voltage winding structure of traction transformer and single-phase liquid-immersed traction transformer - Google Patents
High-voltage winding structure of traction transformer and single-phase liquid-immersed traction transformer Download PDFInfo
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- CN215299033U CN215299033U CN202121035050.5U CN202121035050U CN215299033U CN 215299033 U CN215299033 U CN 215299033U CN 202121035050 U CN202121035050 U CN 202121035050U CN 215299033 U CN215299033 U CN 215299033U
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Abstract
The utility model discloses a traction transformer's high-voltage winding structure, including high-voltage winding, still include that the lead-out wire adds and holds the mechanism, the lead-out wire adds and holds the mechanism and include the limb board and add and hold the piece, the one end and the yoke of limb board are connected, and its other end is followed high-voltage winding's width of cloth is stretched out to the direction, add hold with the limb board is connected, high-voltage winding's lead-out wire is followed high-voltage winding's width of cloth to drawing forth, and pass through add hold to it and hold, stretch out from the side of oil tank again. The utility model discloses still disclose a single-phase liquid immersion traction transformer including above-mentioned high voltage winding structure. The utility model discloses simple structure, processing and simple to operate, fail safe nature is high.
Description
Technical Field
The utility model belongs to the technical field of the transformer, concretely relates to traction transformer's high tension winding structure and contain the single-phase liquid-immersed traction transformer of above-mentioned traction transformer's high tension winding structure.
Background
In an electrified railway traction power supply system, a traction transformer functions to transform a high voltage level in a power grid down to a voltage required by a railway traction system. In northwest areas of China, including Shaanxi, Gansu, Ningxia, Qinghai and other areas, traction transformers are mostly 330kV grade, and the structural form of 330kV single-phase liquid-immersed traction transformers is usually required.
At present, the single-phase liquid-immersed traction transformer of domestic 330kV all adopts anomalous oil tank structure, cooperates common high pressure to rise the seat for install high-tension bushing, and install finned radiator through the dedicated oil pipe of making and dispel the heat again, and this kind of traction transformer exists following not enoughly at least: the oil tank processing is complicated, efficiency is lower, and oil conservator support material consumes much, and the processing and the installation degree of difficulty are very big, and fail safe nature is low, and the transformer oil quantity is more, and the cost is higher, and area is great, and the construction levying expense is also corresponding higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide a traction transformer's high tension winding structure and contain the single-phase liquid formula traction transformer that soaks of above-mentioned traction transformer's high tension winding structure, its simple structure, processing and simple to operate, and fail safe nature is high.
According to the utility model discloses an aspect provides a traction transformer's high-voltage winding structure, its technical scheme as follows:
a high-voltage winding structure of a traction transformer comprises a high-voltage winding and a leading-out wire clamping mechanism,
the outgoing line clamping mechanism comprises a limb plate and a clamping piece,
one end of the limb plate is connected with the iron yoke, the other end of the limb plate extends out along the radial direction of the high-voltage winding,
the clamping piece is connected with the limb plate, and the outgoing line of the high-voltage winding is led out from the width direction of the high-voltage winding, clamped by the clamping piece and then extended out from the side surface of the oil tank.
Preferably, the number of the outgoing lines of the high-voltage winding is two, and the number of the outgoing line holding mechanisms is two corresponding sets.
Preferably, the clamping member is made of a material insulated from the lead wire.
The utility model discloses a traction transformer's high-voltage winding structure, simple structure, workable, installation, and the security is high, is particularly suitable for being used for the single-phase liquid-immersed traction transformer of 330 kV.
According to the utility model discloses an another aspect provides a single-phase liquid-immersed traction transformer, its technical scheme as follows:
a single-phase liquid-immersed traction transformer comprises the high-voltage winding structure.
Preferably, the device also comprises an outlet cylinder,
the outlet tube is arranged on the side wall of the oil tank and communicated with the inside of the oil tank, and the position of the outlet tube corresponds to the leading-out position of the leading-out wire of the high-voltage winding so as to be used for leading out the leading-out wire.
Preferably, the device also comprises a high-voltage lifting seat for leading out the lead-out wire,
the high-pressure lifting seat comprises a horizontal section and an upward section, one end of the horizontal section is movably connected with the wire outlet cylinder, and the other end of the horizontal section is connected with the upward section.
Preferably, the included angle between the upward section and the horizontal section is a right angle or an obtuse angle.
Preferably, the wall of the oil tank is chamfered, and the outlet tube is positioned on the chamfer.
Preferably, still include radiator unit, radiator unit includes radiator, union pipe, the union pipe is located on the lateral wall of oil tank, and with the inside intercommunication of oil tank, the radiator with the union pipe intercommunication.
Preferably, the oil tank further comprises an oil conservator, wherein the oil conservator is arranged on the tank cover of the oil tank and is communicated with the inside of the oil tank.
The utility model discloses a single-phase liquid-immersed traction transformer, simple structure, workable, installation are favorable to improving production efficiency and process capability, save material and reduce cost, and security and reliability height.
Drawings
FIG. 1 is a structural diagram of an outgoing line holding mechanism in an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
fig. 4 is a schematic structural diagram of a single-phase liquid-immersed traction transformer in an embodiment of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a side view of FIG. 4;
fig. 7 is a schematic structural diagram of an oil tank in an embodiment of the present invention;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a top view of FIG. 7;
FIG. 10 is a cross-sectional view of FIG. 9;
fig. 11 is a schematic structural view of a high-pressure lifting seat in an embodiment of the present invention;
fig. 12 is a schematic structural view of another high-pressure lifting seat in an embodiment of the present invention;
fig. 13 is a schematic structural view of another single-phase immersed traction transformer according to an embodiment of the present invention;
FIG. 14 is a side view of FIG. 13;
FIG. 15 is a top view of FIG. 13;
fig. 16 is a cross-sectional view of fig. 15.
In the figure: 1-an outgoing line; 2-limb plate; 3-a clamping member; 4-an outlet cylinder; 5-high pressure raising seat; 51-horizontal segment; 52-upward section; 6-high voltage bushing; 7-a radiator; 8-connecting pipes; 9-an oil conservator; 10-a high voltage winding; 11-iron yoke; 12-a fuel tank; 13-chamfering.
Detailed Description
In the following, the technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship such as "up" is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the indicated device or element must be provided with a specific orientation, constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the interconnection of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
Example 1
As shown in fig. 1, the embodiment discloses a high-voltage winding structure of a traction transformer, which includes a high-voltage winding 10 and a lead wire clamping mechanism, wherein the lead wire clamping mechanism includes a limb plate 2 and a clamping member 3, one end of the limb plate 2 is connected with an iron yoke 11, the other end of the limb plate extends out along the radial direction of the high-voltage winding 10, the clamping member 3 is connected with the limb plate 2, the lead wire 1 of the high-voltage winding is led out from the radial direction of the high-voltage winding 10, and is clamped and tightened by the clamping member 3, and then extends out from the side direction of an oil tank 12.
Specifically, as shown in fig. 2 and 3, the yoke 11 is an upper yoke of the transformer body, and an insulating member is provided at the upper yoke for insulation, and one end of the limb plate 2 is connected to the upper yoke through the insulating member. Wherein the limb plate 2 and the holding member 3 are made of a material insulated from the lead-out wire 1, such as an insulating cardboard. In this embodiment, the limb plates 2 are directly extended outward from the insulator at the upper iron yoke in the radial direction of the high-voltage winding 10, that is, the limb plates 2 and the insulator at the upper iron yoke are fixed together. Compared with the mode that the outgoing line 1 of the high-voltage winding is fixed by the iron core clamping piece independently arranged in the prior art, the high-voltage winding in the embodiment has a simple structure and is convenient to process and install.
In this embodiment, the number of the outgoing lines 1 of the high-voltage winding is preferably two, the number of the lead clamping mechanisms is two corresponding sets, and the two sets of lead clamping structures are respectively used for clamping and compacting the two outgoing lines 1 of the high-voltage winding.
The high-voltage winding structure of the traction transformer has the advantages of high safety, simple structure, easiness in processing and installation, and is particularly suitable for being used for 330kV single-phase liquid-immersed traction transformers.
Example 2
As shown in fig. 4, 5 and 6, the present embodiment discloses a single-phase liquid-immersed traction transformer, which includes the high-voltage winding structure described in embodiment 1.
In some embodiments, the transformer in this embodiment further includes an outlet tube 4, the outlet tube 4 is disposed on a side wall of the oil tank 12 of the single-phase liquid-immersed traction transformer and is communicated with the inside of the oil tank 12, and the position of the outlet tube 4 corresponds to the extraction position of the extraction wire 1 of the high-voltage winding for extracting the extraction wire 1.
Specifically, as shown in fig. 7 and 8, an opening is provided in a side wall of the oil tank 12 at a position corresponding to the lead-out wire 1 of the high-voltage winding, one end of the outlet tube 4 is connected to the opening of the oil tank 12 by welding or the like, the lead-out wire 1 of the high-voltage winding is passed through the outlet tube 4, the high-voltage step-up base 5 is abutted against the other end of the outlet tube 4, and the high-voltage bushing 6 is mounted on the high-voltage step-up base 5 and is connected to the lead-out wire 1 of the high-voltage winding passed through the outlet tube 4. Meanwhile, the diameter of the outlet tube 4 is matched with the insulation level of the outgoing line 1 of the high-voltage winding.
In some embodiments, the present transformer further comprises a high voltage riser block 5 for leading out the lead-out wires 1. The high-voltage lifting seat 5 comprises a horizontal section 51 and an upward section 52, one end of the horizontal section 51 is movably connected with the outlet tube 4, the other end of the horizontal section 51 is connected with the bottom end of the upward section 52, and the high-voltage bushing 6 is installed on the top end of the upward section 52.
Specifically, as shown in fig. 10 and 11, the included angle between the horizontal section 51 and the upward section 52 may be a right angle or an obtuse angle, and the size of the specific angle may be selected according to the insulation distance between the high voltage bushing 6 and the ground and between the high voltage bushings 6, so as to meet the requirement of the outer insulation distance. The horizontal section 51 and the outlet tube 4 are rotatably connected through a flange, so that the requirement of high-voltage external insulation air gap is met by selectively rotating the high-voltage lifting seat 5 and the high-voltage sleeve 6 together to a certain angle when the high-voltage lifting seat 5 and the high-voltage sleeve 6 are installed. Compared with transformers with different insulation level requirements in the prior art (the altitude of the installation environment is different, the insulation distance between the ground and the high-voltage bushing 6 caused by different high-voltage bushing manufacturers is not easy to adjust), the installation modes of the high-voltage rising seat 5 and the high-voltage bushing 6 are various, the structures and specifications of the high-voltage rising seat 5 and the high-voltage bushing 6 are different, the installation is inconvenient, the processing is inconvenient, the transformer only needs to rotate the flange of the high-voltage rising seat 5, the requirements of different insulation distances can be met, the problem that the standardized processing degree of the high-voltage rising seat 5 is low can be solved, and the transformer is favorable for processing and installation.
In some embodiments, the wall of the tank 12 is chamfered and the outlet cartridge 4 is in the chamfered 13 position.
Specifically, the oil tank 12 includes an upper oil tank and a lower oil tank, the upper oil tank is disposed above the lower oil tank, a connecting portion between the tank walls of the upper oil tank in each direction is chamfered, for example, when the cross section of the upper oil tank is square, corners of the tank walls in the length direction and the width direction are chamfered, an opening in the oil tank is disposed on the chamfer 13, the outlet tube 4, the high-pressure rising seat 5 and the high-pressure sleeve 6 are located at the position of the chamfer 13 on the tank wall of the upper oil tank, as shown in fig. 9 and 10, and the size of the chamfer 13 can be selected according to requirements. The transformer oil consumption can be greatly saved by chamfering the wall of the oil tank 12, and the insulation distance between the sharp corners of the periphery of the oil tank 12 and the high-voltage sleeve 6 is increased, so that the requirement of the outer insulation distance is met.
In the present embodiment, the fuel tank 12 is preferably a bell-type fuel tank or a barrel-type fuel tank.
In some embodiments, as shown in fig. 4 and 6, the transformer further includes a heat dissipation assembly, where the heat dissipation assembly includes a heat sink 7 and a header 8, the header 8 is welded to a sidewall of the oil tank 12 and is communicated with the inside of the oil tank 12, and the heat sink 7 is communicated with the header 8 by a flange or the like, so that the heat sink 7 is directly communicated with the oil tank 12 of the transformer. Compared with the prior art, the transformer is simple in structure, more convenient to process and install, convenient to realize automatic welding, high in efficiency and reliable in quality, and can improve the standardization degree and ensure the process capability and stability compared with manual welding. In this embodiment, the radiator 7 is preferably a fin radiator with a gooseneck structure.
In some embodiments, as shown in fig. 4 and 6, the transformer further comprises a conservator 9, wherein the conservator 9 is arranged on the cover of the oil tank 12 and is communicated with the inside of the oil tank 12. Compare in the short axis side that stores up oil tank 9 among the prior art supports on the case lid and is in the transformer body through oblique cabinet foot stool, this transformer is because high-pressure rising seat 5 locates on the lateral wall of oil tank 12, there is sufficient space to place store up oil tank 9 on the case lid of oil tank 12, not only make the volume of transformer reduce greatly, reducible area, reduce the installation degree of difficulty and the steel consumption of storing up oil tank, operating personnel can directly stand the operation on the case lid when installation and maintenance, it is safe high-efficient, it is more convenient to install and overhaul, it is safer.
It should be noted that the single-phase immersed traction transformer of the present embodiment is preferably a 330kV single-phase immersed traction transformer, but may be a single-phase immersed traction transformer with other voltage classes, and is not limited to 330 kV.
The single-phase liquid-immersed traction transformer of the embodiment has the advantages of simple structure, easiness in processing and installation, contribution to improving the production efficiency and the process capability, material saving, cost reduction, high safety and high reliability.
Example 3
This embodiment discloses another single-phase liquid-immersed traction transformer, and compared with the single-phase liquid-immersed traction transformer in embodiment 2, the difference is that:
as shown in fig. 13, 14, 15, and 16, the wall surface of the tank 12 is not chamfered, but the wall surface of the tank 12 is directly provided with a hole, that is, the outlet tube 4, the high-pressure rising seat 5, and the high-pressure bushing 6 are located on the wall surface of the tank 12.
It will be understood that the above description is only of the preferred embodiments of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and such modifications and improvements are considered to be within the scope of the invention.
Claims (10)
1. A high-voltage winding structure of a traction transformer comprises a high-voltage winding (10) and is characterized by also comprising a leading-out wire clamping mechanism,
the outgoing line clamping mechanism comprises a limb plate (2) and a clamping piece (3),
one end of the limb plate is connected with the iron yoke, the other end of the limb plate extends out along the radial direction of the high-voltage winding,
the clamping piece is connected with the limb plate, and the outgoing line (1) of the high-voltage winding is led out from the radial direction of the high-voltage winding, clamped by the clamping piece and then extended out from the side surface of the oil tank (12).
2. The high-voltage winding structure of the traction transformer as recited in claim 1, wherein the number of the outgoing lines of the high-voltage winding is two, and the number of the outgoing line holding mechanisms is two corresponding sets.
3. The high-voltage winding structure of a traction transformer as recited in claim 1, wherein said clamping member is made of a material insulated from said lead-out wire.
4. A single-phase, liquid-immersed traction transformer comprising a high-voltage winding arrangement according to any of claims 1 to 3.
5. The single-phase liquid-immersed traction transformer according to claim 4, further comprising an outlet barrel (4),
the outlet tube is arranged on the side wall of the oil tank and communicated with the inside of the oil tank, and the position of the outlet tube corresponds to the leading-out position of the leading-out wire of the high-voltage winding so as to be used for leading out the leading-out wire.
6. The single-phase liquid-immersed traction transformer according to claim 5, further comprising a high-voltage raising base (5) for leading out the lead-out wire,
the high-pressure rising seat comprises a horizontal section (51) and an upward section (52), one end of the horizontal section is movably connected with the outlet tube, and the other end of the horizontal section is connected with the upward section.
7. The single-phase liquid-immersed traction transformer according to claim 6, wherein the included angle between the upward section and the horizontal section is a right angle or an obtuse angle.
8. The single-phase liquid-immersed traction transformer according to claim 6, wherein the wall of the oil tank is chamfered, and the outlet barrel is positioned on the chamfer (13).
9. The single-phase liquid-immersed traction transformer according to any one of claims 4 to 8, further comprising a heat dissipation assembly, wherein the heat dissipation assembly comprises a heat sink (7) and a header (8), the header is arranged on a side wall of the oil tank and is communicated with the inside of the oil tank, and the heat sink is communicated with the header.
10. Single-phase, liquid-immersed traction transformer according to any one of claims 4 to 8, characterized in that it further comprises a conservator (9) placed on the cover of said tank and communicating with the inside of the tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121035050.5U CN215299033U (en) | 2021-05-14 | 2021-05-14 | High-voltage winding structure of traction transformer and single-phase liquid-immersed traction transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121035050.5U CN215299033U (en) | 2021-05-14 | 2021-05-14 | High-voltage winding structure of traction transformer and single-phase liquid-immersed traction transformer |
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| CN215299033U true CN215299033U (en) | 2021-12-24 |
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| CN202121035050.5U Active CN215299033U (en) | 2021-05-14 | 2021-05-14 | High-voltage winding structure of traction transformer and single-phase liquid-immersed traction transformer |
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