CN213093011U - Entanglement type voltage regulating coil - Google Patents

Abstract

A winding of the entanglement type voltage regulating coil is wound by a self-adhesive transposition lead, the number of turns of the last cake coil of the coil tapping section is not full, the number of turns of the last cake coil of the coil tapping section is one quarter to one half of the number of turns of the normal section, the space of the not full turns is used for placing part of turns of the voltage regulating coil, a voltage regulating tap 6' is bent to the last cake, the number of turns of the voltage regulating coil cake H2 tapping section is 5 turns, and the number of turns of the cake C section of the coil basic section is 4.5 turns. The coil is wound by a self-adhesive transposition wire, the leading-out position of the tapping head is changed, the coil is wound more simply, the transformer coil is more compact, the radial size of the coil cannot be overlarge, the number of turns of the basic section of the coil can be increased on the premise that the voltage regulating coil has the same tapping turns, the overall filling rate and mechanical strength of the coil are improved, meanwhile, the number of turns of the tapping section is closer to the basic section, the ampere-turn balance of the coil is better, the short-circuit resistance of the winding is stronger, the utilization rate of transformer materials is improved, and the manufacturing cost can be reduced.

Description

Entanglement type voltage regulating coil

Technical Field

The utility model relates to a transformer component, concretely relates to entangle formula voltage regulation coil.

Background

The voltage regulating transformer is one of the most important devices in a power transmission and transformation system, and for a non-excitation voltage regulating transformer and an on-load voltage regulating transformer with the voltage regulating level less than seven levels, the structure form of a voltage regulating coil mainly comprises the following components:

scheme 1: the continuous voltage regulating coil adopting the paper-coated flat copper wire is characterized in that each two sections are voltage regulating sections, and the coil is wound as shown in figure 3, so that the turn principle is shown in figure 4;

scheme 2: the intertwining type voltage regulating coil of the ordinary paper-covered flat copper wire is adopted, the number of turns of the voltage regulating coil is usually less than that of turns of each coil segment of the basic coil, each segment is a voltage regulating segment, the coil is wound as shown in figure 5, and the principle of the number of turns is shown in figure 6;

there are problems in that:

(1) the first scheme has the following defects: for the off-circuit voltage regulating transformer and the on-load voltage regulating transformer with the voltage regulating level less than seven levels, the voltage regulating coil is generally integrated with the main coil, a continuous voltage regulating coil of a paper-covered flat copper wire in the scheme 1 is adopted, and each two sections are voltage regulating sections (as shown in figure 3, every two wire cakes are continuously wound, and a tap is drawn out);

by adopting the coil in the form, in order to ensure that the secondary dimension of the voltage regulating coil does not exceed that of the basic coil, the number of turns of all voltage regulating sections cannot exceed that of the basic section at the same time, and the filling rate of the coil is not high finally because the total number of the sections of the coil is large; in addition, when a continuous voltage regulating coil structure is adopted, when the transformer is in a rated gear, 4 sections of the voltage regulating coil are in an idle state (as shown in fig. 4, the voltage regulating coil tapping main outlet 2 and the voltage regulating coil tapping main outlet 4, and the coil between the voltage regulating coil tapping main outlet 3 and the voltage regulating coil tapping main outlet 5 are in a disconnected state, and no current flows through the coil), so that the ampere-turn balance of the coil is poor, and local overheating and short circuit impact faults are easily caused;

(2) by adopting the scheme 2, the number of turns of the intertwining type voltage regulating coil of the ordinary paper-covered flat copper wire is usually less than that of turns of each cake wire section of the basic coil, and each section is a voltage regulating section (as shown in figure 5, the voltage regulating wire cake is wound in a intertwining manner, and each cake is provided with a tap;

by adopting the coil in the form, in order to ensure that the secondary dimension of the voltage regulating coil does not exceed that of the basic coil, the number of turns of all voltage regulating sections does not exceed that of the basic section, the total section of the general coil is less than that of the continuous voltage regulating coil adopting the paper-coated flat copper wire, the filling rate of the coil is relatively higher, when the intertwined voltage regulating coil structure is adopted, when the transformer is in a rated gear, all the wire cakes of the voltage regulating coil have working current to pass through, as shown in figure 6, the wire sections between the tapping heads 2 and 6 of the tapping coil tapping main outlet and the tapping heads 3 and 7 of the voltage regulating coil tapping main outlet have about one half of wire turns to have current to pass through, so the ampere turn balance of the coil is better, the magnetic leakage loss is smaller, the short circuit impact resistance is stronger, however, the number of the parallel winding of the conducting wires of the voltage regulating coil adopting the structure is 2 times of that of the basic coil during winding, so that the winding difficulty is relatively increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tangle formula voltage regulation coil to overcome the above-mentioned not enough that prior art exists.

For solving the above technical problem, the utility model discloses the technical scheme who takes is: the utility model provides a knot formula voltage regulation coil which characterized in that: the coil is wound by a self-adhesive transposition wire, the number of turns of the last cake of coil of the tapping section of the coil is less than one, and the space of the less than one turn is used for placing part of turns of the voltage regulating coil, wherein the outlet 6' of the tapping pair of the voltage regulating coil is bent to the last cake, the number of turns of the tapping section of the voltage regulating coil cake H2 is 5 turns, and the number of turns of the C section of the cake of the basic section of the coil is 4.5 turns;

the self-adhesive transposed conductor is a conductor which is prepared by wrapping N single enameled flat copper wires with insulating paper after transposition; the value of N is any integer between 7 and 31.

The further technical scheme is as follows: the number of turns of the last pancake coil of the coil tapping section is one fourth to one half less than that of the coil of the normal section.

Due to the adoption of the technical scheme, compare with prior art, the utility model relates to a tangle formula voltage regulating coil has following beneficial effect:

(1) on the voltage regulating coil of the off-circuit voltage regulating transformer and the on-load voltage regulating transformer with the voltage regulating level less than seven levels, the entanglement type voltage regulating coil has the number of turns of one cake in every two cake line segments of the general voltage regulating coil and can be equal to the number of turns of the basic coil line segment, each segment is a voltage regulating segment, the structure before improvement is a continuous voltage regulating coil adopting a paper-coated flat copper wire, the total segment number of the general coil is more, and the filling rate of the coil is not high, the utility model discloses an introduce the autohension transposition wire, and change the leading-out position of the tapping outlet, under the premise that the voltage regulating coil has the same tapping number of turns, the number of turns of the basic segment of the coil can be increased, and the;

(2) compared with the prior art: for a large-capacity power transformer, a wire gauge is changed into a self-adhesive transposed conductor from a plurality of parallel wound paper-covered flat copper wires, so that the winding of a coil is simpler, the coil of the transformer is more compact, and the mechanical strength of the coil is better;

(3) the number of turns of a cake coil on the tapping section of the coil is designed to be not full turns (the number of turns of the last cake coil is one quarter to one half less than that of the normal section), the voltage regulating tap 6' is bent to be a cake, the tapping section of H2 is 5 turns, the number of turns of the section C is about 4.5 turns, and the condition that the secondary dimension of the coil cannot exceed the basic section due to the coil transposition when the number of turns of the tapping section of the voltage regulating coil is full turns can be guaranteed, namely the radial dimension of the coil cannot be overlarge;

(4) the scheme enables the number of turns of the basic section of the coil to be more, and meanwhile, because the number of turns of the tapping section is closer to that of the basic section, the ampere-turn balance of the coil is better, the short-circuit resistance of the winding is stronger, the utilization rate of transformer materials is improved, and the manufacturing cost can be reduced.

The technical features of a tangle type voltage regulating coil according to the present invention will be further described with reference to the accompanying drawings and embodiments.

Drawings

Fig. 1-2 are schematic diagrams of a tangle type voltage regulating coil of the present invention:

fig. 1 is a schematic diagram of a winding structure of a coil, and fig. 2 is a schematic diagram of the number of winding turns of the coil;

fig. 3 to 4 are schematic diagrams of a continuous voltage regulating coil (each two sections are a voltage regulating section) using a paper-covered flat copper wire:

fig. 3 is a schematic diagram of a coil winding structure, and fig. 4 is a schematic diagram of the number of turns of the coil;

fig. 5 to 6 are schematic diagrams of a intertwined voltage regulating coil (usually, the number of turns of the voltage regulating coil is less than that of each coil segment of the basic coil, and each segment is a voltage regulating segment) using a plain paper-covered flat copper wire:

fig. 5 is a schematic diagram of a coil winding structure, and fig. 6 is a schematic diagram of the number of turns of the coil;

in the figure:

e and C are the code numbers of the coil basic section coil cakes and are used for distinguishing the coil cakes with different numbers of turns, namely the coil basic section coil cake E and the coil basic section coil cake C;

H. h1 and H2 are the codes of coil voltage-regulating coil cakes for distinguishing the coil cakes with different tapping turns, which are called voltage-regulating coil cake H, voltage-regulating coil cake H1 and voltage-regulating coil cake H2 for short;

2. 3, 4, 5, 6 and 7 are voltage regulating coil tapping main outlet identifiers which are respectively called a voltage regulating coil tapping main outlet 2, a voltage regulating coil tapping main outlet 3 and a … … voltage regulating coil tapping main outlet 7;

4', 5', 6' and 7' are secondary tap identifiers of the voltage regulating coils (which are respectively connected with the main taps of the corresponding 4, 5, 6 and 7 voltage regulating coils to form a entanglement voltage regulating part), which are respectively called as secondary taps 4' of the voltage regulating coils, secondary taps 5' of the voltage regulating coils and secondary taps 7' of the voltage regulating coils … ….

Detailed Description

A tangle type voltage regulating coil is wound by a self-adhesive transposition wire, the number of turns of the last cake coil of a coil tapping section is less than one, and the space of the less than one turn is used for placing part of turns of the voltage regulating coil, wherein, the tapping auxiliary outlet 6' of the voltage regulating coil is bent to the last cake, the number of turns of the voltage regulating coil cake H2 tapping section is 5 turns, and the number of turns of the coil basic section cake C section is 4.5 turns; the self-adhesive transposed conductor is a conductor which is prepared by wrapping N single enameled flat copper wires with insulating paper after transposition; the value of N is any integer between 7 and 31.

The number of turns of the last pancake coil of the coil tapping section is one fourth to one half less than that of the coil of the normal section.

The intertwined voltage regulating coil can be applied to medium and large-sized capacity non-excitation voltage regulating transformers and on-load voltage regulating transformers with voltage regulating stages less than seven stages.

Claims (2)

1. The utility model provides a knot formula voltage regulation coil which characterized in that: the coil is wound by a self-adhesive transposition wire, the number of turns of the last cake of coil of the tapping section of the coil is less than one, and the space of the less than one turn is used for placing part of turns of the voltage regulating coil, wherein the outlet 6' of the tapping pair of the voltage regulating coil is bent to the last cake, the number of turns of the tapping section of the voltage regulating coil cake H2 is 5 turns, and the number of turns of the C section of the cake of the basic section of the coil is 4.5 turns;

the self-adhesive transposed conductor is a conductor which is prepared by wrapping N single enameled flat copper wires with insulating paper after transposition; the value of N is any integer between 7 and 31.

2. The tangle-type voltage regulating coil according to claim 1, wherein: the number of turns of the last pancake coil of the coil tapping section is one fourth to one half less than that of the coil of the normal section.

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