CN113948290A - Transformer framework and using method - Google Patents

Abstract

The invention discloses a transformer framework and a use method thereof, wherein the transformer framework comprises the following components: the protective shell is internally provided with an inserted link; the first winding frame is accommodated in the protective shell and sleeved on the inserted rod, a first gap is formed between the outer peripheral wall of the first winding frame and the inner peripheral wall of the protective shell, a second gap is formed between the inner peripheral wall of the first winding frame and the outer peripheral wall of the inserted rod, and the first winding frame is used for winding a secondary coil; the first winding frame and the second winding frame are tightly sleeved on the inserted rod in a matching way, and the second winding frame is used for winding the primary coil; first wire winding frame, second wire winding frame and the coaxial setting of inserted bar, first clearance and second clearance are used for filling insulating cement, and the first wire winding frame and the second wire winding frame that set up cooperate, with primary coil and secondary coil separately the coiling, and insulating properties is good, so the degree of difficulty of coiling is low, and production is convenient.

Description

Transformer framework and using method

Technical Field

The invention relates to the technical field of transformers, in particular to a transformer framework and a using method thereof.

Background

The transformer framework is a bracket for winding a coil.

At present, a primary coil and a secondary coil are wound in two winding grooves of a transformer framework, and if the voltage of the primary coil is higher (the voltage is between 1KV and 10 KV), the insulation treatment difficulty between the primary coil and the secondary coil is large.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the transformer framework, the primary coil and the secondary coil can be wound separately, the production difficulty is low, and the insulating property is good.

The invention further provides a using method of the transformer framework.

According to an embodiment of the first aspect of the invention, a transformer bobbin comprises: the protective shell is internally provided with an inserted link; the first winding frame is accommodated in the protective shell and is sleeved on the inserted rod, a first gap is formed between the outer peripheral wall of the first winding frame and the inner peripheral wall of the protective shell, a second gap is formed between the inner peripheral wall of the first winding frame and the outer peripheral wall of the inserted rod, and the first winding frame is used for winding a secondary coil; the first winding frame and the second winding frame are tightly sleeved on the inserted rod in a matching mode, and the second winding frame is used for winding a primary coil; the first winding frame, the second winding frame and the inserted bar are coaxially arranged, and the first gap and the second gap are used for filling insulating glue.

The transformer framework provided by the embodiment of the invention at least has the following beneficial effects: the first winding frame and the second winding frame are matched, the primary coil and the secondary coil are separately wound, and the insulating property is good; in addition, in the winding process, the primary coil is only wound on the second winding frame, the secondary coil is only wound on the first winding frame, the winding difficulty is low due to the uniform specification, the production is convenient, the arranged insertion rod plays a role in fixing and limiting, the first winding frame and the second winding frame are prevented from running, the protective shell, the first winding frame and the second winding frame are nested layer by layer, the space of the protective shell is fully utilized, the whole transformer can be miniaturized during manufacturing, and the use and the installation are convenient; in addition, the primary coil of the high-voltage part is placed at the innermost part, and the secondary coil of the low-voltage part is placed between the primary coil and the protective shell, so that the coupling of the primary coil and the secondary coil can be increased.

According to some embodiments of the invention, a limiting block is arranged inside the protective shell, the limiting block protrudes into the protective shell along the horizontal direction, an insertion guiding inclined plane is arranged on the limiting block, the insertion guiding inclined plane inclines towards the inside of the protective shell from top to bottom, and the insertion guiding inclined plane is used for guiding the insertion of the first winding frame.

According to some embodiments of the present invention, the upper end and the lower end of the first bobbin are each provided with a rib, the rib protrudes outward in a horizontal direction, and the two ribs define a winding area, and the ribs are arranged to prevent the secondary coil on the first bobbin from being separated.

According to some embodiments of the invention, the upper end and the lower end of the first winding frame are respectively provided with an external connection installation groove, the external connection installation grooves are used for installing silicon steel sheets, and the silicon steel sheets can be clamped in the external connection installation grooves, so that the silicon steel sheets can be limited, and the silicon steel sheets can be prevented from being separated from the external connection installation grooves.

According to some embodiments of the present invention, the second bobbin is provided in plurality, the plurality of second bobbins are vertically arranged, two adjacent second bobbins are connected, the height of the plurality of second bobbins is equal to or less than the height of the first bobbin, the first bobbin and the second bobbin have good integrity, and the coupling between the secondary coil and the primary coil is good because the height of the plurality of second bobbins is equal to or less than the height of the first bobbin; in addition, the second winding frames are arranged to reduce the finished products of defective products.

According to some embodiments of the present invention, the upper end of the second bobbin frame is provided with a plurality of connection posts, the lower end of the second bobbin frame is provided with connection holes, the connection holes correspond to the connection posts one to one, and the connection post of one of two adjacent second bobbin frames can be inserted into the other connection hole.

According to some embodiments of the invention, the second winding frame is provided with a plurality of winding grooves, and the plurality of winding grooves enable the primary coil to be wound without interlayer wrapping, so that automatic production of the high-voltage coil can be realized, and the production efficiency is improved.

According to some embodiments of the present invention, two adjacent winding slots are separated by a partition, and each partition is provided with a wire spanning slot, so as to conveniently span the winding slots when winding the primary coil, thereby preventing the primary coil from being cut off on the partition.

According to some embodiments of the invention, each partition plate is provided with a wire passing groove, and the wire passing grooves are vertically arranged, so that the first wire can be conveniently pulled back to the initial end from the wire passing groove after winding is completed, and the first wire is prevented from protruding out of the wound primary coil.

The use method of the transformer framework according to the embodiment of the second aspect of the invention comprises the following steps:

the method comprises the following steps of performing first winding, namely preparing a first lead, leading out one end of the first lead as a first connection end, winding the first lead in a winding groove closest to the end of a second winding frame, leading the first lead from a wire crossing groove to a next winding groove after one winding groove is fully wound with a layer of first lead until each winding groove is wound with the first lead on the previous layer, pulling the other end of the first lead back to the position where the winding is started from the wire crossing groove, using the other end of the first lead as a second connection end, and winding the first lead into a coil which is a primary coil;

a second winding, preparing a second wire, winding the second wire on the first winding frame, wherein a coil wound by the second wire is a secondary coil;

mounting, namely sleeving two second winding frames wound with the primary coil on the inserted rod in a sleeving manner, wherein the height of the two second winding frames is less than or equal to that of one first winding frame, and sleeving the first winding frame wound with the secondary coil on the second winding frame;

and (5) potting, namely potting the first winding frame and the second winding frame in the protective shell by using insulating glue.

The use method of the transformer framework provided by the embodiment of the invention at least has the following beneficial effects: the first winding frame and the second winding frame are matched, the primary coil and the secondary coil are separately wound, and the insulating property is good; in addition, in the winding process, the primary coil is only wound on the second winding frame, the secondary coil is only wound on the first winding frame, the winding difficulty is low due to the uniform specification, the production is convenient, the arranged insertion rod plays a role in fixing and limiting, the first winding frame and the second winding frame are prevented from running, the protective shell, the first winding frame and the second winding frame are nested layer by layer, the space of the protective shell is fully utilized, the whole transformer can be miniaturized during manufacturing, and the use and the installation are convenient; in addition, the primary coil of the high-voltage part is placed at the innermost part, and the secondary coil of the low-voltage part is placed between the primary coil and the protective shell, so that the coupling of the primary coil and the secondary coil can be increased.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a transformer bobbin according to an embodiment of the present invention;

FIG. 2 is an exploded view of the transformer bobbin shown in FIG. 1;

fig. 3 is a structural view of a second bobbin frame of the bobbin shown in fig. 1, viewed from below;

fig. 4 is a schematic structural diagram of a protective shell of the transformer bobbin shown in fig. 1.

The protective shell 100, the insert rod 110, the first gap 120, the second gap 130, the limiting block 140 and the insert guiding inclined plane 141;

a first winding frame 200, a rib 210, an external connection mounting groove 220 and a wire hanging nail 230;

a second bobbin frame 300, a connection post 310, a connection hole 320;

winding slot 330, partition 331, crossover slot 331a, and crossover slot 331 b.

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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be 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 meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 4, a bobbin for a transformer includes: a protective shell 100, wherein an insert rod 110 is arranged in the protective shell 100; a first winding frame 200 accommodated in the protective shell 100, the first winding frame 200 being sleeved on the insert rod 110, a first gap 120 being provided between an outer peripheral wall of the first winding frame 200 and an inner peripheral wall of the protective shell, a second gap 130 being provided between the inner peripheral wall of the first winding frame 200 and the outer peripheral wall of the insert rod 110, the first winding frame 200 being used for winding a secondary coil; the second winding frame 300 is sleeved on the inserted rod 110, the second winding frame 300 is accommodated in the second gap 130, the first winding frame 200 and the second winding frame 300 are tightly sleeved on the inserted rod 110 in a matching mode, and the second winding frame 300 is used for winding a primary coil; the first bobbin frame 200, the second bobbin frame 300 and the plunger 110 are coaxially disposed, and the first gap 120 and the second gap 130 are filled with an insulating paste. The arranged first winding frame 200 is matched with the second winding frame 300, so that the primary coil and the secondary coil are separately wound, and the insulating property is good; in addition, in the winding process, the primary coil is only wound on the second winding frame 300, the secondary coil is only wound on the first winding frame 200, the winding difficulty is low because the specification is uniform, the production is convenient, the arranged insertion rod 110 plays a role in fixing and limiting, the first winding frame 200 and the second winding frame 300 are prevented from being out of position, the protective shell 100, the first winding frame 200 and the second winding frame 300 are nested layer by layer, the space of the protective shell 100 is fully utilized, the whole transformer can be miniaturized in the manufacturing process, and the use and the installation are convenient; in addition, the primary coil of the high-voltage part is arranged at the innermost part, and the secondary coil of the low-voltage part is arranged between the primary coil and the protective shell 100, so that the coupling between the primary coil and the secondary coil can be increased, and because the protective shell 100 is arranged, insulating glue can be filled and sealed after the high-voltage part is installed, so that the whole product is safer and more reliable. It should be noted that, at present, the transformer framework on the market is generally divided into an i-shaped structure and a king-shaped structure, where the i-shaped structure and the king-shaped structure refer to the shape exhibited by the axial section of the framework after the transformer framework is axially cut, for the i-shaped transformer framework, a primary coil and a secondary coil are sequentially wound in a groove of the transformer framework, and the primary coil and the secondary coil are separated by an isolation layer; for a transformer framework with a structure shaped like a Chinese character 'wang', a primary coil and a secondary coil are respectively wound in two winding grooves of the transformer framework, and for a high-voltage transformer, the voltage borne by the primary coil is higher, generally between 1KV and 10KV, and the turn ratio of the primary coil is more at this time; if the transformer framework with the I-shaped structure is adopted, the insulation processing difficulty between the winding of the primary coil and the winding of the secondary coil is higher, and the isolation layer is difficult to ensure not to be broken down because the distance between the winding of the primary coil and the winding of the secondary coil on the transformer framework with the I-shaped structure is very close.

In some embodiments, the inside of the protective shell 100 is provided with a limiting block 140, the limiting block 140 protrudes into the protective shell 100 along the horizontal direction, the limiting block 140 is provided with an insertion guiding inclined plane 141, the insertion guiding inclined plane 141 inclines towards the inside of the protective shell 100 from top to bottom, and the insertion guiding inclined plane 141 is used for guiding the insertion of the first winding frame 200.

In some embodiments, the upper end and the lower end of the first bobbin frame 200 are provided with the ribs 210, the ribs 210 protrude outward in the horizontal direction, two ribs 210 define a winding area, and the ribs 210 are provided to prevent the secondary winding on the first bobbin frame 200 from being separated.

In some embodiments, the upper end and the lower end of the first bobbin frame 200 are both provided with an outer connecting installation groove 220, the outer connecting installation groove 220 is used for installing silicon steel sheets, the silicon steel sheets can be clamped in the outer connecting installation groove 220, the silicon steel sheets can be limited, and can be prevented from being separated from the outer connecting installation groove 220, and it can be understood that the silicon steel sheets are used for manufacturing the transformer core.

In some embodiments, a wire hanging nail 230 is disposed on the first winding frame 200, and the wire hanging nail 230 is used for hanging the second wire in the secondary coil, so as to facilitate winding.

In some embodiments, the plurality of second winding frames 300 are provided, the plurality of second winding frames 300 are vertically arranged, two adjacent second winding frames 300 are connected, the height of the plurality of second winding frames 300 is less than or equal to the height of the first winding frame 200, the first winding frame 200 and the second winding frame 300 have good integrity, and the coupling between the secondary coil and the primary coil is good because the height of the plurality of second winding frames 300 is less than or equal to the height of the first winding frame 200; in addition, the plurality of second winding frames 300 are arranged to reduce the finished products of defective products, because the time for winding a second winding frame 300 with the same height as the first winding frame 200 is long, the probability of wire breakage in the winding process is higher, the second winding frame 300 adopts a plurality of splicing modes, the winding time of a single second winding frame 300 can be shortened, the error probability is reduced, even if the wire is broken, the winding time is short, the wound materials are few, the rewinding can be quickly removed, raw materials are saved, it is explained that the number of turns of a primary coil is more, the wire diameter is small, each layer of coil is wound, 1-2 layers of insulating tapes must be bound, the number of layers of the transformer is more in this time, each layer of the transformer is bound, the manufacturing cost is higher, and the difficulty of production is high.

In some embodiments, the plurality of connection posts 310 are disposed at the upper end of the second bobbin frame 300, the connection holes 320 are disposed at the lower end of the second bobbin frame 300, the connection holes 320 correspond to the connection posts 310 one to one, and the connection post 310 of one of the two adjacent second bobbin frames 300 can be inserted into the other connection hole 320.

In some embodiments, the second winding frame 300 is provided with a plurality of winding slots 330, and the plurality of winding slots 330 enable the primary coil to be wound without interlayer wrapping, so that automatic production of the high-voltage coil can be realized, and the production efficiency is improved, that is, after a layer of primary coil is wound, the next layer can be wound continuously by crossing the second winding slot 330.

In some embodiments, two adjacent winding slots 330 are separated by a partition 331, and each partition 331 has a wire spanning slot 331a, so as to conveniently span the winding slots 330 when winding the primary coil, thereby preventing the primary coil from being cut off on the partition 331.

In some embodiments, each partition 331 is provided with a wire passing groove 331b, and the plurality of wire passing grooves 331b are vertically arranged, so that the first wire is conveniently pulled back to the initial end from the wire passing groove 331b after winding is completed, and the first wire is prevented from protruding out of the wound primary coil.

In some embodiments, the vertically extending edges of the protective shell 100 are rounded to avoid the protective shell 100 from cutting an operator or other elements.

A method for using a transformer bobbin comprises the following steps:

first winding, namely preparing a first wire, leading out one end of the first wire as a first connection end, then winding the first wire in one winding groove 330 closest to the end of the second winding frame 300, leading the first wire from the wire crossing groove 331a to the next winding groove 330 after one winding groove 330 is fully wound with a layer of first wire until each winding groove 330 is wound with the layer of first wire, then pulling back the other end of the first wire from the wire crossing groove 331b to the position of the initial winding, taking the other end of the first wire as a second connection end, and taking a coil wound by the first wire as a primary coil;

a second winding, in which a second wire is prepared and wound on the first winding frame 200, and a coil wound by the second wire is a secondary coil;

mounting, sleeving two second winding frames 300 wound with primary coils on the inserted rod 110, wherein the height of the two second winding frames 300 is less than or equal to that of one first winding frame 200, and sleeving the first winding frame 200 wound with secondary coils on the second winding frames 300;

and (3) potting, namely potting the first winding frame 200 and the second winding frame 300 in the protective shell 100 by using insulating glue.

It should be noted that the insert rod 110 is hollow, and the hollow insert rod 110 can accommodate silicon steel sheets and can also be inserted into the iron core.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A transformer skeleton, comprising:

the protective shell is internally provided with an inserted link;

the first winding frame is accommodated in the protective shell and is sleeved on the inserted rod, a first gap is formed between the outer peripheral wall of the first winding frame and the inner peripheral wall of the protective shell, a second gap is formed between the inner peripheral wall of the first winding frame and the outer peripheral wall of the inserted rod, and the first winding frame is used for winding a secondary coil;

the first winding frame and the second winding frame are tightly sleeved on the inserted rod in a matching mode, and the second winding frame is used for winding a primary coil;

the first winding frame, the second winding frame and the inserted bar are coaxially arranged, and the first gap and the second gap are used for filling insulating glue.

2. The transformer skeleton of claim 1, wherein: the inside of protecting crust is provided with the stopper, the stopper is along the protruding stretching of horizontal direction in the protecting crust, be provided with on the stopper and lead and insert the inclined plane, lead to insert the inclined plane from last to down to the inside slope of protecting crust, it is used for the guide to insert the inclined plane first reel inserts.

3. The transformer skeleton of claim 1, wherein: the upper end and the lower extreme of first winding frame all are provided with the flange, the flange is along the horizontal direction toward the evagination, two a wire winding region is injectd to the flange.

4. The transformer skeleton of claim 3, wherein: the upper end and the lower extreme of first wire winding frame have all been seted up and have been linked the mounting groove outward, it is used for installing the silicon steel sheet to link the mounting groove outward.

5. The transformer skeleton of any one of claims 1 to 4, wherein: the second winding frame is provided with a plurality of, and is a plurality of the second winding frame is along vertical arrangement, and adjacent two the second winding frame is connected, it is a plurality of the height less than or equal to of second winding frame the height of first winding frame.

6. The transformer skeleton of claim 5, wherein: the upper end of second wire winding frame is provided with a plurality of spliced poles, the lower extreme of second wire winding frame is provided with the connecting hole, the connecting hole with spliced pole one-to-one, adjacent two in the second wire winding frame one the spliced pole can insert another the connecting hole.

7. The transformer skeleton of claim 6, wherein: and the second winding frame is provided with a plurality of winding grooves.

8. The transformer skeleton of claim 7, wherein: two adjacent winding slots are separated by a partition plate, and each partition plate is provided with a wire spanning slot.

9. The transformer skeleton of claim 8, wherein: each baffle is provided with a wire passing groove, and the plurality of wire passing grooves are vertically arranged.

10. The use method of the transformer framework is characterized by comprising the following steps:

the method comprises the following steps of performing first winding, namely preparing a first lead, leading out one end of the first lead as a first connection end, winding the first lead in a winding groove closest to the end of a second winding frame, leading the first lead from a wire crossing groove to a next winding groove after one winding groove is fully wound with a layer of first lead until each winding groove is wound with the first lead on the previous layer, pulling the other end of the first lead back to the position where the winding is started from the wire crossing groove, using the other end of the first lead as a second connection end, and winding the first lead into a coil which is a primary coil;

a second winding, preparing a second wire, winding the second wire on the first winding frame, wherein a coil wound by the second wire is a secondary coil;

mounting, namely sleeving two second winding frames wound with the primary coil on the inserted rod in a sleeving manner, wherein the height of the two second winding frames is less than or equal to that of one first winding frame, and sleeving the first winding frame wound with the secondary coil on the second winding frame;

and (5) potting, namely potting the first winding frame and the second winding frame in the protective shell by using insulating glue.

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