CN211957399U

CN211957399U - Single-phase 500kV autotransformer

Info

Publication number: CN211957399U
Application number: CN202021067718.XU
Authority: CN
Inventors: 胡岭
Original assignee: Nanjing Liye Power Transformer Co ltd
Current assignee: Nanjing Liye Power Transformer Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2020-11-17
Anticipated expiration: 2030-06-11

Abstract

The utility model relates to an autotransformer technical field, concretely relates to single-phase 500kV autotransformer, including the box, be provided with the transformer body in the box, the top of transformer body is fixed with the roof, and the bottom of transformer body is fixed with the bottom plate, and the bottom of box inner chamber is fixed with two slide bars symmetrically, and the bottom plate bottom has seted up the spout corresponding to the slide bar position, and two slide bar front end one sides are provided with spacing subassembly, and the box lateral wall is provided with the instruction panel, and the instruction panel electric connection transformer body; the utility model discloses can reduce king post common winding, series winding wire length during the use to reduce load loss, wire quantity, improve the economic nature of product, can reduce king post outside coil diameter, thereby reduce the transformer width, reduce the super high voltage transformer degree of difficulty, can improve the well low, the height short circuit impedance of transformer greatly, improve the anti short circuit ability of transformer, the transformer body is easily changed simultaneously.

Description

Single-phase 500kV autotransformer

Technical Field

The utility model relates to an autotransformer technical field, concretely relates to single-phase 500kV autotransformer.

Background

The single-phase autotransformer is a device which changes alternating-current voltage by adopting a single-phase power supply and utilizing the principle of electromagnetic induction. The silicon steel is specially designed for voltage conversion, is manufactured by adopting imported cold-rolled silicon steel stacked high-temperature-resistant high-insulation composite materials, and has the characteristics of small loss, high efficiency, low temperature rise, reliability in use and the like. The voltage stabilizing power supply device is widely applied to stable voltage power supply of large electromechanical equipment in the fields of industry, traffic, post and telecommunications and the like.

With the development of power grids, 500kV power grids become the most important power grids, and the voltage reduction of the 500kV power grids is mostly realized by a single-phase 500kV autotransformer. Currently, a single-phase 500kV autotransformer has the following winding arrangement modes (the following winding arrangements are all arranged from a core column to the outside): in the first mode, as shown in fig. 6, the main column is sequentially a low-voltage winding, a common winding, a series winding, and the side column is sequentially a low-voltage exciting winding and a voltage regulating winding; in the second mode, as shown in fig. 7, the main column is sequentially a low-voltage winding, a common winding, a series winding, and the side column is sequentially a medium-voltage exciting winding and a voltage regulating winding; in a third mode, as shown in fig. 8, the main column is sequentially a low-voltage winding, a voltage regulating winding, a common winding and a series winding (see fig. 3); in a fourth mode, as shown in fig. 9, the main column is sequentially a low-voltage winding, a common winding, a voltage regulating winding and a series winding (see fig. 4); mode five, as shown in fig. 10, the main column is a low voltage winding-a common winding-a series winding-a voltage regulating winding in sequence (see fig. 5). In fig. 6-10, 10 'is the transformer body, 11' is the iron core, 12 'is the main pole, 13' is the side pole, 14 'is the low voltage winding, 15' is the common winding, 16 'is the series winding, 17' is the medium voltage excitation winding, 18 'is the voltage regulation winding, 19' is the low voltage excitation winding. In the existing 5 winding arrangement modes, a low-voltage winding is arranged at the innermost side of a main column, and a common winding-series winding which mainly participates in operation (500kV to 220kV) is arranged at the outer side. Such an arrangement increases the common winding, series winding wire length, thereby increasing load loss, wire usage. Meanwhile, the traditional single-phase 500kV autotransformer is not convenient for replacing the transformer body.

Based on this, the utility model designs a single-phase 500kV autotransformer to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that proposes among the above-mentioned background art, provide a single-phase 500kV autotransformer.

In order to achieve the above object, the utility model provides a following technical scheme: a single-phase 500kV autotransformer comprises a box body, wherein a transformer body is arranged in the box body, a top plate is fixed at the top of the transformer body, a bottom plate is fixed at the bottom of the transformer body, two sliding rods are symmetrically fixed at the bottom of an inner cavity of the box body, the bottom plate is arranged on the upper portions of the sliding rods in a sliding mode, a sliding groove is formed in the bottom end of the bottom plate corresponding to the position of each sliding rod, a limiting assembly is arranged on one side of the front end of each sliding rod, a mounting groove is formed in the position of each sliding rod corresponding to the corresponding limiting assembly, an;

the limiting assembly comprises a baffle, a compression spring, a pull rope, a pull ring and a rotating shaft, the baffle is hinged to one side of a notch of the mounting groove, one end of the compression spring is fixedly connected with the side wall of the mounting groove, the other end of the compression spring is fixedly connected with the baffle, the pull rope is fixedly connected with the baffle, the other end of the pull rope slides through the rotating shaft to penetrate through the pull ring, the compression spring is sleeved on the outer side of the pull rope, the rotating groove is formed in the position, corresponding to the rotating shaft, of the inside of the slide rod, the sector groove is formed in the.

Further, among the above-mentioned auto transformer, the transformer body includes two iron cores, two the principal post is constituteed to the adjacent one side of iron core, two the iron core opposite side is the side post, the principal post from interior to exterior has set gradually public winding and series winding, the side post from interior to exterior has set gradually low voltage winding, middling pressure excitation winding and voltage regulating winding.

Further, in the autotransformer, a voltmeter, an ammeter and a work indicator lamp are arranged on the indication panel.

Furthermore, in the autotransformer, a box door is hinged to the front end of the box body, and a rubber gasket is arranged at a contact position of the box door and the box body.

Furthermore, in the autotransformer, universal wheels with brake pads are fixed at four corners of the bottom of the box body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the low-voltage winding is arranged on the side column, so that the lengths of the main column common winding and the series winding lead can be reduced, the load loss and the lead consumption are reduced, and the product economy is improved;

2. the low-voltage winding is arranged on the side column, so that the diameter of the outermost coil of the main column can be reduced, the width of the transformer is reduced, and the difficulty of the ultrahigh-voltage transformer is reduced;

3. the number of turns of the low-voltage winding is doubled when the low-voltage winding is arranged on the side column compared with that of the low-voltage winding arranged on the main column, and the impedance is in direct proportion to the number of turns, so that the medium-low and high-low short-circuit impedance of the transformer is greatly improved, and the short-circuit resistance of the transformer is improved.

4. The transformer body can be quickly and conveniently disassembled and installed through the arranged limiting assembly, and the transformer body is convenient to replace.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the limiting assembly of the present invention;

fig. 3 is a schematic structural view of an embodiment 1 of the transformer body of the present invention;

fig. 4 is a schematic structural view of an embodiment 2 of the transformer body of the present invention;

fig. 5 is a schematic structural view of an embodiment 3 of the transformer body of the present invention;

FIG. 6 shows a first winding arrangement of a conventional single-phase 500kV autotransformer of the prior art;

FIG. 7 is a second winding arrangement of a conventional single-phase 500kV autotransformer of the background art;

FIG. 8 shows a third winding arrangement of a conventional single-phase 500kV autotransformer of the background art;

FIG. 9 shows a winding arrangement of a conventional single-phase 500kV autotransformer in the background art;

fig. 10 shows a fifth winding arrangement of a conventional single-phase 500kV autotransformer of the background art.

In the drawings, the components represented by the respective reference numerals are listed below:

10. a transformer body; 11. an iron core; 12. a main column; 13. a side column; 14. a low voltage winding; 15. a common winding; 16. a series winding; 17. a medium voltage excitation winding; 18. a voltage regulating winding; 20. a box body; 30. a top plate; 40. a base plate; 41. a chute; 42. a sector groove; 50. a slide bar; 51. mounting grooves; 52. a rotating groove; 60. an indication panel; 61. a voltmeter; 62. an ammeter; 63. a work indicator light; 70. a box door; 80. a universal wheel; 90. a limiting component; 91. a baffle plate; 92. a compression spring; 93. pulling a rope; 94. a pull ring; 95. a rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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 protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present embodiment provides a technical solution: the utility model provides a single-phase 500kV autotransformer, the power distribution box comprises a box body 20, be provided with transformer body 10 in the box 20, transformer body 10 top is fixed with roof 30, transformer body 10 bottom is fixed with bottom plate 40, box 20 inner chamber bottom symmetry is fixed with two slide bars 50, bottom plate 40 slides and sets up on slide bar 50 upper portion, bottom plate 40 bottom corresponds slide bar 50 position and has seted up spout 41, two slide bar 50 front end one side are provided with spacing subassembly 90, slide bar 50 corresponds spacing subassembly 90 position and has seted up mounting groove 51, the box 20 lateral wall is provided with indicating panel 60, indicating panel 60 electric connection transformer body 10.

Spacing subassembly 90 includes baffle 91, compression spring 92, stay cord 93, pull ring 94 and pivot 95, baffle 91 articulates in mounting groove 51 notch one side, the 51 lateral walls of compression spring 92 one end fixed connection mounting groove, compression spring 92 other end fixed connection baffle 91, stay cord 93 one end fixed connection baffle 91, the stay cord 93 other end slides through slide bar 50 fixed connection pull ring 94 through pivot 95, compression spring 92 cup joints in the stay cord 93 outside, slide bar 50 is inside to correspond pivot 95 positions and has seted up rotation groove 52, bottom plate 40 corresponds baffle 91 position and has seted up sector groove 42, sector groove 42 and baffle 91 phase-match.

The transformer body 10 comprises two iron cores 11, a main column 12 is formed by adjacent sides of the two iron cores 11, a side column 13 is arranged on the other side of the two iron cores 11, a common winding 15 and a series winding 16 are sequentially arranged on the main column 12 from inside to outside, and a low-voltage winding 14, a medium-voltage excitation winding 17 and a voltage regulating winding 18 are sequentially arranged on the side column 13 from inside to outside. The indication panel 60 is provided with a voltmeter 61, an ammeter 62 and an operation indicator lamp 63. The front end of the box body 20 is hinged with a box door 70, and a rubber gasket is arranged at the contact position of the box door 70 and the box body 20. The four corners of the bottom of the box body 20 are all fixed with universal wheels 80 with brake pads, which is convenient for moving and fixing the device.

In this embodiment, when the transformer body 10 is installed, the sliding groove 41 of the bottom plate 40 is aligned with the sliding rod 50, the side wall of the sliding groove 41 presses the baffle plate 91, the compression spring 92 is compressed under stress, until the bottom plate 40 is pushed to the innermost side, the baffle plate 91 is bounced into the fan-shaped groove 42 under the action of the compression spring 92, and the transformer body 10 is fixed under the combined action of the rear wall of the box body 20 and the baffle plate 91. When the transformer body 10 needs to be taken out and replaced, the pull ring 94 is pulled, the pull ring 94 drives the baffle plate 91 to move into the mounting groove 51 through the pull rope 93, the rotating shaft 95 enables the pull rope 93 to be convenient to pull until the baffle plate 91 is separated from the fan-shaped groove 42, the transformer body 10 is taken out, and the dismounting and the mounting are very convenient.

Example 2

The transformer body 10 mounting structure may also be: the transformer comprises two iron cores 11, a main column 12 is formed by adjacent sides of the two iron cores 11, a side column 13 is arranged on the other side of the two iron cores 11, a common winding 15, a voltage regulating winding 18 and a series winding 16 are sequentially arranged on the main column 12 from inside to outside, and a low-voltage winding 14 and a medium-voltage excitation winding 17 are sequentially arranged on the side column 13 from inside to outside.

Example 3

The transformer body 10 mounting structure may also be: the transformer comprises two iron cores 11, a main column 12 is formed by adjacent sides of the two iron cores 11, a side column 13 is arranged on the other side of the two iron cores 11, a common winding 15, a series winding 16 and a voltage regulating winding 18 are sequentially arranged on the main column 12 from inside to outside, and a low-voltage winding 14 and a medium-voltage excitation winding 17 are sequentially arranged on the side column 13 from inside to outside.

The utility model arranges the low-voltage winding on the side column main, which can reduce the length of the main column common winding and the series winding wire, thereby reducing the load loss and the wire consumption and improving the economy of the product; the diameter of the outermost coil of the main column can be reduced, so that the width of the transformer is reduced, and the difficulty of the ultrahigh voltage transformer is reduced; the number of turns of the low-voltage winding is doubled when the low-voltage winding is arranged on the side column compared with that of the low-voltage winding arranged on the main column, and the impedance is in direct proportion to the number of turns, so that the medium-low and high-low short-circuit impedance of the transformer is greatly improved, and the short-circuit resistance of the transformer is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a single-phase 500kV autotransformer, includes box (20), its characterized in that: a transformer body (10) is arranged in the box body (20), a top plate (30) is fixed at the top of the transformer body (10), a bottom plate (40) is fixed at the bottom of the transformer body (10), two sliding rods (50) are symmetrically fixed at the bottom of an inner cavity of the box body (20), the bottom plate (40) is arranged on the upper portions of the sliding rods (50) in a sliding mode, a sliding groove (41) is formed in the bottom end of the bottom plate (40) corresponding to the position of each sliding rod (50), a limiting assembly (90) is arranged on one side of the front end of each sliding rod (50), a mounting groove (51) is formed in the sliding rod (50) corresponding to the position of each limiting assembly (90), an indicating panel (60) is arranged on the outer side wall of the;

the limiting assembly (90) comprises a baffle (91), a compression spring (92), a pull rope (93), a pull ring (94) and a rotating shaft (95), the baffle (91) is hinged at one side of the notch of the mounting groove (51), one end of the compression spring (92) is fixedly connected with the side wall of the mounting groove (51), the other end of the compression spring (92) is fixedly connected with the baffle (91), one end of the pull rope (93) is fixedly connected with the baffle (91), the other end of the pull rope (93) penetrates through the sliding rod (50) through a rotating shaft (95) in a sliding way to be fixedly connected with a pull ring (94), the compression spring (92) is sleeved outside the pull rope (93), a rotating groove (52) is formed in the sliding rod (50) corresponding to the rotating shaft (95), the bottom plate (40) is provided with a fan-shaped groove (42) corresponding to the position of the baffle (91), and the fan-shaped groove (42) is matched with the baffle (91).

2. The single-phase 500kV autotransformer as claimed in claim 1, wherein: transformer body (10) include two iron cores (11), two king-post (12), two are constituteed to adjacent one side in iron core (11) opposite side is other post (13), king-post (12) from interior to exterior has set gradually public winding (15) and series winding (16), other post (13) from interior to exterior has set gradually low voltage winding (14), middling pressure excitation winding (17) and voltage regulating winding (18).

3. The single-phase 500kV autotransformer as claimed in claim 1, wherein: the indicating panel (60) is provided with a voltmeter (61), an ammeter (62) and a working indicating lamp (63).

4. The single-phase 500kV autotransformer as claimed in claim 1, wherein: the front end of the box body (20) is hinged with a box door (70), and a rubber gasket is arranged at the contact position of the box door (70) and the box body (20).

5. The single-phase 500kV autotransformer as claimed in claim 1, wherein: four corners of the bottom of the box body (20) are fixed with universal wheels (80) with brake pads.