CN217847672U

CN217847672U - High-voltage coil of split transformer with voltage regulating function

Info

Publication number: CN217847672U
Application number: CN202221127074.8U
Authority: CN
Inventors: 李亚民; 王元明; 齐鲁; 张成飞; 王静; 于向东
Original assignee: Shandong Power Equipment Co Ltd
Current assignee: Shandong Power Equipment Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-11-18
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to a split transformer high-voltage coil with pressure regulating function belongs to the transformer and makes technical field, including parallelly connected first high-voltage coil and the second high-voltage coil of placing of longitudinal symmetry, arrange first pressure regulating shunting section on first high-voltage coil upper portion, arrange second pressure regulating shunting section in the lower part of second high-voltage coil, first pressure regulating shunting section and second pressure regulating shunting section symmetrical arrangement, first pressure regulating shunting section and second pressure regulating shunting section have the line cake of independent pressure regulating shunting wire tapping for a plurality of, pressure regulating shunting wire tapping and high pressure tapping all draw forth from the coil is inside, the space of copper bar is reserved to the coil inside, high-voltage coil all uses the transposition wire with pressure regulating shunting section, in order to reduce transformer circulation loss. The copper bar is welded on the transposition conducting wire, and a voltage-regulating tapping wire outlet head is led out from each wire cake of the voltage-regulating tapping section. The utility model discloses reduce the size of transformer ware body, promoted economic nature, promoted anti short circuit ability and transformer performance.

Description

High-voltage coil of split transformer with voltage regulating function

Technical Field

The utility model relates to a be applied to split transformer's high-tension coil structural style, and this high-tension coil has the pressure regulating function, belongs to transformer manufacturing technical field.

Background

Split transformers are commonly used in power plants as starting backup transformers or service transformers.

At present, if the high voltage of the split transformer has a voltage regulating function, the design is generally provided with a coil for adjusting the number of high-voltage turns to realize the voltage regulating function, namely: the voltage regulating coil is arranged in the coil assembly, and the voltage regulating coil is arranged in the coil assembly, so that the overall size of the coil assembly is increased, and the economical efficiency of transformer manufacturing is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a modified split-winding transformer high-voltage coil with pressure regulating function utilizes the pressure regulating shunting section of arranging in high-voltage coil to realize the adjustment of the high-pressure number of turns. The utility model adopts the technical proposal that:

a split transformer high voltage coil with voltage regulation, comprising: the transformer comprises a first high-voltage coil and a second high-voltage coil which are symmetrically arranged in parallel from top to bottom, wherein a first voltage regulating tapping section is arranged on the upper portion of the first high-voltage coil, a second voltage regulating tapping section is arranged on the lower portion of the second high-voltage coil, the first voltage regulating tapping section and the second voltage regulating tapping section are symmetrically arranged, the first voltage regulating tapping section and the second voltage regulating tapping section are a plurality of line cakes with independent voltage regulating tapping line tapping heads, the voltage regulating tapping line tapping heads and the high voltage tapping heads are all led out from the inside of the coil, the space of a copper bar is reserved in the inside of the coil, transposition wires are used for the high-voltage coil and the voltage regulating tapping sections, and therefore the circulating current loss of the transformer is reduced. The copper bar is welded on the transposition conducting wire, and a voltage-regulating tapping wire outlet head is led out from each wire cake of the voltage-regulating tapping section. The tail end of the first high-voltage coil and the head end of the first high-voltage coil are led out from the coil to the head outlet structure of the first high-voltage coil, the tail end of the second high-voltage coil and the head end of the second high-voltage coil are led out from the coil to the head outlet structure of the second high-voltage coil, and the voltage-regulating branch wire outlet head of the first voltage-regulating branch section and the voltage-regulating branch wire outlet head of the second voltage-regulating branch section are led out from the coil to the voltage-regulating switch. The number of turns of the series high voltage is adjusted through the voltage adjusting switch, so that the voltage adjusting function of the high-voltage coil is realized.

The utility model has the advantages of as follows:

(1) The utility model discloses to be used for the pressure regulating shunting section of pressure regulating to place in same coil with high-voltage coil, reduced the size of transformer ware body, promoted the economic nature.

(2) The utility model discloses all use the transposed conductor of same specification in high-voltage coil and pressure regulating shunting section, when having reduced transformer circulation loss, also reduced because the welding problem that different specification wire gauges brought.

(3) The utility model discloses a shunting line all uses the copper bar welding on the wire with the play first lead-out wire, and the welding leads to inside the line cake by big oil duct in the shunting line in the line cake outside, makes the score wiring all draw forth from inside with going out the head, and oil duct increases in the coil, promotes anti short circuit ability, promotes the transformer performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention and that other drawings may be derived by those skilled in the art without inventive step from these drawings, and are within the scope of the present application.

Fig. 1 is a sectional view of a coil arrangement according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the voltage-regulating tapping line outlet head and the copper bar led out of the line cake;

FIG. 3 is a schematic view of the voltage-regulating branch line outlet head and the copper bar led out from the inside of the line cake;

in the figure, 1 is first low pressure coil, 2 is second low pressure coil, 3 is first high pressure coil, 4 is second high pressure coil, 5 is first pressure regulating shunting section, 6 is second pressure regulating shunting section, 7 is first high pressure coil outlet structure, 8 is second high pressure coil outlet structure, 9 is first high pressure coil tail end, 10 is first high pressure coil head end, 11 is first pressure regulating shunting section pressure regulating shunting wire outlet head, 12 is second high pressure coil tail end, 13 is second high pressure coil head end, 14 is second pressure regulating shunting section pressure regulating shunting wire outlet head, 15 is the strap, 16 is pressure regulating shunting wire outlet head and copper bar, 17 is the line cake, 18 is the stay.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

As shown in fig. 1, the coil arrangement cross-sectional view of the embodiment of the present invention is shown. A split transformer high voltage coil with voltage regulation, comprising: first high tension coil 3 and second high tension coil 4 that the longitudinal symmetry was placed in parallel, arrange first pressure regulating shunting section 5 on 3 upper portions of first high tension coil, arrange second pressure regulating shunting section 6 in the lower part of second high tension coil 4, first pressure regulating

shunting section

5 and 6 symmetrical arrangement of second pressure regulating shunting section, first pressure regulating shunting section 5 and second pressure regulating shunting section 6 have the line cake of independent pressure regulating shunting wire outlet for a plurality of, pressure regulating shunting wire outlet and high pressure outlet are all drawn forth from the coil is inside, the inside stay of coil adopts the space of big stay in order to reserve the copper bar. The high-voltage coil and the voltage-regulating tapping section both use transposed conductors to reduce the circulating current loss of the transformer. The copper bar is welded on the transposition conducting wire, and a voltage-regulating tapping wire outlet head is led out from each wire cake of the voltage-regulating tapping section. First high-voltage coil tail end 9 and first high-voltage coil head end 10 draw forth to first high-voltage coil outlet structure 7 in following the coil, second high-voltage coil tail end 12 and second high-voltage coil head end 13 draw forth to second high-voltage coil outlet structure 8 in following the coil, first pressure regulating tapping section pressure regulating tapping line outlet 11 and second pressure regulating tapping section pressure regulating tapping line outlet 14 draw forth to pressure regulating switch in following the coil, adjust the number of turns of high-pressure cluster income through pressure regulating switch to realize its pressure regulating function.

And a second low-voltage coil 2 is arranged on the inner sides of the first high-voltage coil 3 and the second high-voltage coil 4, and a first low-voltage coil 1 is arranged on the outer sides of the first high-voltage coil 3 and the second high-voltage coil 4 to form a split transformer body with a structure of the second low-voltage coil 2-the first high-voltage coil 3 and the second high-voltage coil 4-the first low-voltage coil 1.

The number of the branch wiring copper bars suitable for being placed in one stay gear can be judged according to the size of the copper bars and the size relation of the intervals between the stay gears.

The pressure regulating tapping line tapping head can be selected from the inside of an online cake or the outside of the online cake when a copper bar is welded on the outside of the online cake, when the copper bar is welded on the outside of the online cake, an oil duct with the thickness larger than that of the copper bar is reserved between the online cakes, the pressure regulating tapping line tapping head is arranged inside the line cake from the outside in the oil duct, in the range of a supporting bar through which the pressure regulating tapping line tapping head passes, the upper and lower corresponding regions of each cake coil of the pressure regulating tapping line tapping head are additionally provided with angle ring protection, and the performance of the coil is improved by additionally providing the angle ring protection.

As shown in fig. 2, it is a schematic diagram of the voltage-regulating tapping line outlet head and the copper bar led out of the line cake; the voltage regulation shunting line goes out the insulation system of certain thickness of periphery with insulating paper package bundle of head and copper bar 16, and insulation system's thickness satisfies voltage class protection requirement, then reuse paper groove is detained and is carried out voltage regulation shunting line and go out the head and the protection of copper bar 16, and reuse twill strap 15 wraps up the fastening in order to prevent not hard up at last. As shown in fig. 3, it is a schematic view of the voltage-regulating branch line outlet head and the copper bar led out from the inside of the line cake; pressure regulating tapping line goes out the head and copper bar 16 arranges between stay 18, and pressure regulating tapping line goes out the head and protects on one side with the paper groove at line cake with 16 peripheries of copper bar, and reuse twill strap 15 wraps the fastening in order to prevent not hard up.

The utility model discloses a copper bar size should satisfy the current-carrying requirement of transformer winding to according to the size of copper bar and the whole size of coil, select a copper bar or two copper bars to draw forth between stay 18.

Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims

1. A split transformer high-voltage coil with a voltage regulating function is characterized by comprising: the transformer comprises a first high-voltage coil (3) and a second high-voltage coil (4) which are symmetrically arranged in parallel from top to bottom, wherein a first voltage-regulating tapping section (5) is arranged at the upper part of the first high-voltage coil (3), a second voltage-regulating tapping section (6) is arranged at the lower part of the second high-voltage coil (4), the first voltage-regulating tapping section (5) and the second voltage-regulating tapping section (6) are symmetrically arranged, the first voltage-regulating tapping section (5) and the second voltage-regulating tapping section (6) are a plurality of wire cakes with independent voltage-regulating tapping wire outlets, the voltage-regulating tapping wire outlets and the high-voltage outlets are both led out from the inside of the coil, a space of a copper bar is reserved in the coil, the high-voltage coil and the voltage-regulating tapping sections both use transposition wires, the copper bar is welded on the transposition wires, and one voltage-regulating tapping wire outlet is led out from each wire cake of the voltage-regulating tapping sections; first high-voltage coil tail end (9) and first high-voltage coil head end (10) are drawn forth first high-voltage coil outlet structure (7) from the coil in, and second high-voltage coil tail end (12) and second high-voltage coil head end (13) are drawn forth to second high-voltage coil outlet structure (8) from the coil in, and first pressure regulating tapping section pressure regulating tapping line outlet (11) and second pressure regulating tapping section pressure regulating tapping line outlet (14) are drawn forth to pressure regulating switch from the coil in.

2. The high voltage coil of the split transformer with the voltage regulation function according to claim 1, wherein a second low voltage coil (2) is arranged inside the first high voltage coil (3) and the second high voltage coil (4), and a first low voltage coil (1) is arranged outside the first high voltage coil (3) and the second high voltage coil (4) to form a split transformer body with a structure of the second low voltage coil (2) -the first high voltage coil (3) and the second high voltage coil (4) -the first low voltage coil (1).

3. The split transformer high-voltage coil with the voltage regulating function as claimed in claim 2, wherein an oil passage larger than the thickness of the copper bar is reserved between the line cakes, and an angle ring is additionally arranged in the corresponding area of each cake coil above and below the outlet of the voltage regulating tapping line.

4. The high-voltage coil of the split transformer with the voltage regulating function according to claim 2, wherein the voltage regulating tapping line tapping head and the periphery of the copper bar (16) are wrapped by insulating paper to form an insulating structure, the voltage regulating tapping line tapping head and the copper bar (16) are protected by buckling of a paper groove, and the high-voltage coil is wrapped and fastened by a twill cloth belt (15).

5. The split transformer high-voltage coil with the voltage regulating function according to claim 2, wherein the voltage regulating tapping line outlet head and the copper bar (16) are arranged between the supporting bars (18), the voltage regulating tapping line outlet head and the periphery of the copper bar (16) are protected on one side of a wire cake by a paper groove, and are bound and fastened by a twill cloth belt (15).