阅读说明：本技术 一种电炉用节能型单相非晶合金铁心变压器及其装配方法 (Energy-saving single-phase amorphous alloy iron core transformer for electric furnace and assembling method thereof ) 是由 刘亚飞 李端中 范景帅 张涛 张庆杰 于 2021-03-02 设计创作，主要内容包括：本发明涉及一种电炉用节能型单相非晶合金铁心变压器,包括：非晶合金铁心、一次线圈、二次线圈、引线铜排、上夹件、下夹件和接线柱组件。变压器的装配方法,包括以下几个步骤：绕制一次线圈；制作二次线圈；将非晶合金铁单框的搭接口打开；将引线铜排与U型线圈的开口端相连接；将一次线圈和二次线圈摆放在装配台上；向一次线圈的中心推入非晶合金铁心的中心柱,闭合非晶合金铁单框的搭接口；安装上夹件及下夹件；进行接线柱组件的安装制作。本发明的变压器,结构独特,简单合理,生产装配方便,能有效解决现有冶炼用变压器的损耗大,耗电多的问题,成本低,节能效果显著,有良好的经济效益、环境效益和社会效益,极具市场推广与应用价值。(The invention relates to an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace, which comprises: the wire-leading device comprises an amorphous alloy iron core, a primary coil, a secondary coil, a wire leading copper bar, an upper clamping piece, a lower clamping piece and a lug post assembly. The assembly method of the transformer comprises the following steps: winding a primary coil; manufacturing a secondary coil; opening a lap joint of the amorphous alloy iron single frame; connecting the lead copper bar with the open end of the U-shaped coil; placing the primary coil and the secondary coil on an assembly table; pushing a central column of the amorphous alloy iron core into the center of the primary coil, and closing the lap joint of the amorphous alloy iron single frame; installing an upper clamping piece and a lower clamping piece; and (5) mounting and manufacturing the lug column assembly. The transformer has the advantages of unique structure, simplicity, reasonableness, convenient production and assembly, low cost, obvious energy-saving effect, good economic benefit, environmental benefit and social benefit, and great market popularization and application value, and can effectively solve the problems of large loss and high power consumption of the existing transformer for smelting.)

1. An energy-saving single-phase amorphous alloy iron core transformer for an electric furnace is characterized by comprising: the coil comprises an amorphous alloy iron core (1), a primary coil (2), a secondary coil (3), a lead copper bar (4), an upper clamping piece (5), a lower clamping piece (6) and a wiring terminal assembly (7); wherein:

the amorphous alloy iron core (1) is formed by splicing two symmetrical amorphous alloy single frames, and a two-frame three-column structure is formed by splicing the two amorphous alloy single frames;

the primary coil (2) is sleeved on the central column of the amorphous alloy iron core (1);

the secondary coil (3) is concentrically sleeved outside the primary coil (2) at intervals; the secondary coil (3) is composed of a plurality of U-shaped coils which are vertically arranged;

the lead copper bar (4) is connected with the open end of the U-shaped coil;

the upper clamping piece (5) and the lower clamping piece (6) are fixedly arranged at the top and the bottom of the amorphous alloy iron core (1) respectively;

the lug post assembly (7) is arranged on the upper clamping piece (6); the lug post assembly (7) is connected with the primary coil (2).

2. The energy-saving single-phase amorphous alloy iron core transformer for the electric furnace as claimed in claim 1, wherein the primary coil (2) is vacuum dip-painted.

3. The energy-saving single-phase amorphous alloy iron core transformer for the electric furnace as claimed in claim 1, wherein the primary coil (2) is a multi-layer cylindrical coil formed by winding a plurality of Nomex paper-wrapped flat copper wires; and performing transposition treatment on a plurality of side-by-side Nomex paper-coated flat copper wires at the position of 1/2 turns of each layer of the primary coil (2).

4. The energy-saving single-phase amorphous alloy iron core transformer for the electric furnace as claimed in claim 1, wherein the secondary coil (3) is composed of two U-shaped coils arranged up and down; the U-shaped coil is formed by overlapping multiple layers of copper strips.

5. The energy-saving single-phase amorphous alloy iron core transformer for the electric furnace as claimed in claim 1, wherein the air distance between the secondary coil (3) and the primary coil (2) is L, L is more than or equal to 10 mm.

6. An assembling method of an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace is characterized by comprising the following steps:

s1: winding a primary coil;

s2: manufacturing a secondary coil, wherein the secondary coil is composed of a plurality of U-shaped coils which are vertically arranged;

s3: splicing two symmetrical amorphous alloy single frames to form an amorphous alloy iron core with a two-frame three-column structure; opening a lap joint of the amorphous alloy iron single frame;

s4: connecting a lead copper bar with the open end of the U-shaped coil to obtain a secondary coil assembly;

s5: placing the primary coil and the secondary coil assembly on an assembly table; the secondary coil assembly is concentrically arranged on the outer side of the primary coil;

s6: pushing a central column formed by combining two amorphous alloy single frames into the center of the primary coil, closing lap joints of the two amorphous alloy single frames, and bundling for insulation;

s7: respectively installing an upper clamping piece and a lower clamping piece at the top and the bottom of the amorphous alloy iron core to finish the assembly of the transformer body;

s8: hanging the assembled transformer body down an assembly table, and mounting and manufacturing a binding post assembly; finishing the assembly of the finished product;

s9: and (5) carrying out performance test on the assembled finished product, and putting the assembled finished product into operation after the test is qualified.

7. The method as claimed in claim 6, wherein in step S1, a plurality of Nomex paper-clad flat copper wires are wound to form a multi-layer cylindrical primary coil; performing transposition treatment on a plurality of the Nomex paper-coated flat copper wires which are arranged side by side during winding at the position of 1/2 turns of each layer of the primary coil; and after the primary coil is wound, drying, vacuum dipping paint and drying again.

8. The assembling method of the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace according to claim 6, wherein in the step S2, copper strips are stacked in multiple layers and made into a U shape to obtain the U-shaped coil; and the two U-shaped coils are distributed up and down to obtain the secondary coil.

9. The method for assembling an energy-saving single-phase amorphous alloy core transformer for an electric furnace as claimed in claim 6, wherein in step S5, the air distance L between the secondary coil and the primary coil is ensured to be not less than 10 mm.

Technical Field

The invention relates to the technical field of transformers, in particular to an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace and an assembling method thereof.

Background

Amorphous alloy iron core distribution transformers have been widely used in rural power grids, urban power distribution projects, factories, coal mines, hospitals, markets, schools and other places due to the advantages of small exciting current, low no-load loss, remarkable energy-saving effect and the like. Because metal smelting is a high-energy-consumption industry, the requirements of low transformer voltage, large current, strong overload capacity, high insulation level and stable power supply are met. The technical requirements are met, and meanwhile, the operation cost of the existing enterprises is high, and the competitive pressure is high; in addition, the existing transformer has large loss, uses electricity of tens of millions of degrees in a year, charges billions of yuan of electricity, consumes more electricity and wastes resources seriously.

Therefore, how to combine the characteristics of the amorphous alloy iron core to develop an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace and an assembly method thereof, which can effectively reduce the loss of the transformer in the smelting process, further reduce the power consumption of enterprises, reduce the cost of the enterprises and effectively save energy, are the technical problems to be solved by technical personnel in the field.

Disclosure of Invention

The present invention aims to solve at least to some extent one of the above-mentioned problems of the prior art.

Therefore, an object of the present invention is to provide an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace, which can effectively reduce the loss of the transformer in the smelting process, reduce the power consumption of enterprises, save national energy, and simultaneously improve the profit and competitiveness of the enterprises, and comprises:

the amorphous alloy transformer comprises an amorphous alloy iron core, a primary coil, a secondary coil, a lead copper bar, an upper clamp, a lower clamp and a lug post assembly; wherein:

the amorphous alloy iron core is formed by splicing two symmetrical amorphous alloy single frames, and a two-frame three-column structure is formed by splicing the two amorphous alloy single frames;

the primary coil is sleeved on the central column of the amorphous alloy iron core;

the secondary coil is concentrically sleeved outside the primary coil at intervals; the secondary coil is composed of a plurality of U-shaped coils which are vertically arranged;

the lead copper bar is connected with the open end of the U-shaped coil;

the upper clamping piece and the lower clamping piece are respectively and fixedly arranged at the top and the bottom of the amorphous alloy iron core;

the lug post assembly is arranged on the upper clamping piece; the lug assembly is connected with the primary coil.

The amorphous alloy iron core transformer has the beneficial effects that the amorphous alloy iron core is selected, so that the transformer is small in exciting current, low in no-load loss and better and remarkable in energy-saving effect. The transformer is different from a conventional transformer in structure, a primary coil is adopted, secondary coils are concentrically arranged outside the primary coil at intervals, and the secondary coils are arranged into a U-shaped structure to form an open structure of the primary coil; the lead copper bar is directly drawn out from the U-shaped open end of the secondary coil, and the arrangement of the structure ensures that the transformer is more convenient and faster to assemble and is convenient to produce, install and use. The U-shaped opening degree of the secondary coil can influence parameters such as impedance of the transformer, the size of the U-shaped opening of the secondary coil can be adjusted according to actual conditions, and the secondary coil is flexible and highly applicable. The secondary coil is manufactured in a multi-section mode, and is directly connected with the lead copper bar after being formed, so that the internal eddy current loss is effectively reduced, and the performance of the transformer is ensured to be more stable.

Preferably, in the above energy-saving single-phase amorphous alloy core transformer for an electric furnace, the primary coil is subjected to vacuum dip coating treatment.

Has the advantages that: and the insulating property and the mechanical strength of the primary coil can be effectively improved by adopting vacuum dip coating treatment.

Preferably, in the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace, the primary coil (2) is a multi-layer cylindrical coil formed by winding a plurality of Nomex paper-covered flat copper wires; and performing transposition treatment on a plurality of side-by-side Nomex paper-coated flat copper wires at the position of 1/2 turns of each layer of the primary coil (2).

Has the advantages that: the Nomex paper-coated flat copper wire has good high temperature resistance and insulating property; the transposition structure of the plurality of parallel Nomex paper-coated flat copper wires can ensure that the positions of the flat copper wires in a leakage magnetic field are the same, and the lengths of the flat copper wires are the same, so that the induction potentials are the same, the resistances are the same, circulating current is not generated, and additional loss is not increased.

Preferably, in the above energy-saving single-phase amorphous alloy iron core transformer for an electric furnace, the secondary coil is composed of two U-shaped coils arranged up and down; the U-shaped coil is formed by overlapping multiple layers of copper strips.

Has the advantages that: the U-shaped coils are formed by overlapping multiple layers of copper strips, the secondary coils are formed by a plurality of U-shaped coils in a vertically-segmented manner, the requirements of low voltage and large current are met, and the eddy current loss of the coils is reduced; and the amorphous alloy iron core has the characteristics of low no-load loss and low exciting current, the no-load loss is reduced by more than 70%, the load loss is reduced by more than 20%, and the energy-saving effect in the whole product operation process is very obvious.

Preferably, in the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace, an air distance between the secondary coil and the primary coil is L, and L is more than or equal to 10 mm.

Has the advantages that: the arrangement of the air distance ensures good heat dissipation effect of the primary coil and the secondary coil.

An assembly method of an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace comprises the following steps:

s1: winding a primary coil;

s2: manufacturing a secondary coil, wherein the secondary coil is composed of a plurality of U-shaped coils which are vertically arranged;

s3: splicing two symmetrical amorphous alloy single frames to form an amorphous alloy iron core with a two-frame three-column structure; opening a lap joint of the amorphous alloy iron single frame;

s4: connecting a lead copper bar with the open end of the U-shaped coil to obtain a secondary coil assembly;

s5: placing the primary coil and the secondary coil assembly on an assembly table; the secondary coil assembly is concentrically arranged on the outer side of the primary coil;

s6: pushing a central column formed by combining two amorphous alloy single frames into the center of the primary coil, closing lap joints of the two amorphous alloy single frames, and bundling for insulation;

s7: respectively installing an upper clamping piece and a lower clamping piece at the top and the bottom of the amorphous alloy iron core to finish the assembly of the transformer body;

s8: hanging the assembled transformer body down an assembly table, and mounting and manufacturing a binding post assembly; finishing the assembly of the finished product;

s9: and (5) carrying out performance test on the assembled finished product, and putting the assembled finished product into operation after the test is qualified.

Preferably, in the assembling method of the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace, in step S1, a plurality of Nomex paper-clad flat copper wires are wound to form a multi-layer cylindrical primary coil; performing transposition treatment on a plurality of the Nomex paper-coated flat copper wires which are arranged side by side during winding at the position of 1/2 turns of each layer of the primary coil; and after the primary coil is wound, drying, vacuum dipping paint and drying again.

Preferably, in the assembling method of the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace, in the step S2, copper strips are stacked in multiple layers and are made into a U shape, so as to obtain the U-shaped coil; and the two U-shaped coils are distributed up and down to obtain the secondary coil.

Preferably, in the assembling method of the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace, in step S5, the air distance L between the secondary coil and the primary coil is ensured to be not less than 10 mm.

Compared with the prior art, the energy-saving single-phase amorphous alloy iron core transformer for the electric furnace has the advantages of unique structure, simplicity, reasonableness, convenience in production, capability of effectively solving the problems of large loss and high power consumption of the existing transformer for smelting, low cost, remarkable energy-saving effect, good economic benefit, environmental benefit and social benefit, and great market popularization and application value.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a perspective view of FIG. 3;

FIG. 5 is a top view of the present invention;

fig. 6 is a perspective view of fig. 5.

Wherein: the coil assembly comprises an amorphous alloy iron core 1, a primary coil 2, a secondary coil 3, a lead copper bar 4, an upper clamp 5, a lower clamp 6 and a wiring terminal assembly 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The embodiment of the invention discloses an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace, which can effectively reduce the loss of the transformer in the smelting process, reduce the power consumption of enterprises, save national energy and simultaneously improve the profit and the competitiveness of the enterprises.

Referring to fig. 1 to 6, an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace includes: the device comprises an amorphous alloy iron core 1, a primary coil 2, a secondary coil 3, a lead copper bar 4, an upper clamping piece 5, a lower clamping piece 6 and a wiring terminal assembly 7; wherein:

the amorphous alloy iron core 1 is formed by splicing two symmetrical amorphous alloy single frames, and the two amorphous alloy single frames are spliced into a two-frame three-column structure;

the primary coil 2 is sleeved on the central column of the amorphous alloy iron core 1;

the secondary coil 3 is concentrically sleeved outside the primary coil 2 at intervals; the secondary coil 3 is composed of a plurality of U-shaped coils which are vertically arranged;

the lead copper bar 4 is connected with the opening end of the U-shaped coil;

the upper clamping piece 5 and the lower clamping piece 6 are respectively and fixedly arranged at the top and the bottom of the amorphous alloy iron core 1;

the terminal post assembly 7 is connected to the upper clamping piece 6; the terminal block assembly 7 is connected to the primary coil 2.

In order to further optimize the above technical solution, the primary coil 2 is vacuum-dip-painted.

In order to further optimize the technical scheme, the primary coil 2 is a multi-layer cylindrical coil formed by winding a plurality of Nomex paper-wrapped flat copper wires; the plurality of Nomex paper-covered flat copper wires arranged side by side are transposed at the position of 1/2 turns per layer of the primary coil 2.

In order to further optimize the technical scheme, the secondary coil 3 consists of two U-shaped coils which are vertically arranged; the U-shaped coil is formed by overlapping multiple layers of copper strips.

In order to further optimize the technical scheme, the air distance between the secondary coil 3 and the primary coil 2 is L which is more than or equal to 10 mm.

An assembly method of an energy-saving single-phase amorphous alloy iron core transformer for an electric furnace comprises the following steps:

s1: winding a primary coil;

s2: manufacturing a secondary coil, wherein the secondary coil is composed of a plurality of U-shaped coils which are vertically arranged;

s3: splicing two symmetrical amorphous alloy single frames to form an amorphous alloy iron core with a two-frame three-column structure; opening a lap joint of the amorphous alloy iron single frame;

s4: connecting the lead copper bar with the opening end of the U-shaped coil to obtain a secondary coil assembly;

s5: placing the primary coil and the secondary coil assembly on an assembly table; the secondary coil assembly is concentrically arranged on the outer side of the primary coil;

s6: pushing a central column formed by combining two amorphous alloy single frames into the center of the primary coil, closing lap joints of the two amorphous alloy single frames, and bundling for insulation;

s7: respectively installing an upper clamping piece and a lower clamping piece at the top and the bottom of the amorphous alloy iron core to finish the assembly of the transformer body;

s8: hanging the assembled transformer body down an assembly table, and mounting and manufacturing a binding post assembly; finishing the assembly of the finished product;

s9: and (5) carrying out performance test on the assembled finished product, and putting the assembled finished product into operation after the test is qualified.

In order to further optimize the technical scheme, in step S1, a plurality of Nomex paper-clad flat copper wires are wound into a multi-layer cylindrical primary coil; during winding, a plurality of parallel Nomex paper-coated flat copper wires are subjected to transposition treatment at the position of 1/2 turns of each layer of the primary coil; and after the primary coil is wound, drying, vacuum dipping paint and drying again.

In order to further optimize the technical scheme, in step S2, copper strips are stacked in multiple layers and made into a U shape to obtain a U-shaped coil; and the two U-shaped coils are distributed up and down to obtain secondary coils.

In order to further optimize the above technical solution, in step S5, the air distance L between the secondary coil and the primary coil is ensured to be greater than or equal to 10 mm.

The invention is used for transporting the assembled finished product to the field for installation, connecting a 400V side power supply to one group of corresponding contacts (A, A1), (A, A2) and (A, A3) on the terminal block assembly 7 (three groups of contacts respectively output voltages of 10V, 8V and 6V on one side of the secondary coil 3); and then connecting an input side bus of the electric furnace to a lead copper bar 4 arranged on the secondary coil 3. After the connection is finished, the transformer can be put into operation. The secondary coil 3 adopts a structure that a plurality of layers of copper strips are manufactured into an upper section and a lower section, so that the requirement of low voltage and large current is met, and the eddy current loss of the coil is reduced; and the amorphous alloy iron core has the characteristics of low no-load loss and low exciting current, the no-load loss is reduced by more than 70%, the load loss is reduced by more than 20%, and the energy-saving effect in the whole product operation process is very obvious. Compared with the prior art, the invention has the advantages of unique structure, simplicity, reasonableness and convenient production, can effectively solve the problems of large loss and high power consumption of the existing smelting transformer, can save about 30 percent of electric charge for enterprises every year, has obvious energy-saving effect, good economic benefit, environmental benefit and social benefit, and has great market popularization and application value.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," 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 are not necessarily intended to 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.