CN217426524U - Transformer device - Google Patents

Abstract

The first insulation clamping piece comprises a first part, a second part and a first connecting rod, the first connecting rod is connected with the first part and the second part, the first part, the second part and the first connecting rod surround to form a first accommodating space, and the iron core part is accommodated in the first accommodating space. The second insulating clamp is provided with a second accommodating space, and the iron core part is accommodated in the second accommodating space. The coil is sleeved on the iron core and is positioned between the first insulating clamp and the second insulating clamp. The utility model provides a transformer, but the first insulation folder of split fixes the mode unshakable in one's determination and coil, reduces the electrical insulation distance between each part, is convenient for maintain unshakable in one's determination and coil simultaneously, has compact structure, economic nature is excellent, easy to maintain's beneficial effect.

Description

Transformer device

Technical Field

The application relates to the technical field of electrical equipment, in particular to a transformer.

Background

With the continuous progress of transformer technology, the magnetic leakage problem of the transformer is also receiving more and more attention. The magnetic leakage can lead to the eddy current phenomenon generated in the transformer clamping piece and the corrugated oil tank, and then the heat is generated through the heat effect, so that the working efficiency of the transformer is reduced. Meanwhile, due to the nonuniformity of magnetic leakage, the magnetic leakage strength of a local area in the transformer is high, the eddy current phenomenon is concentrated in the area, local overheating is brought, and the performance of the transformer is further reduced.

In the prior art, the transformer clamp is usually made of metal materials such as channel steel and steel plates, and the metal clamp makes the loss caused by eddy current phenomenon and local overheating more obvious. Meanwhile, when metal is adopted for manufacturing, the electrical insulation distance among the coil, the clamping piece, the lead and the oil tank is large, so that the design size of the transformer and the oil tank is increased, the cost is improved, and the economical efficiency is reduced. Meanwhile, the clamping piece in the prior art is often divided into an upper part and a lower part, and the upper part and the lower part are fixed after the coil and the iron core are installed, so that the clamping piece is difficult to disassemble and is not beneficial to maintenance.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a transformer to solve the above problems.

The embodiment of the application provides a transformer, which comprises an iron core, a first insulating clamp, a second insulating clamp and a coil, wherein the first insulating clamp comprises a first part, a second part and a first connecting rod, the first connecting rod is connected with the first part and the second part, the first part, the second part and the first connecting rod surround to form a first accommodating space, and the iron core is accommodated in the first accommodating space. The second insulating clamp is provided with a second accommodating space, the iron core part is accommodated in the second accommodating space, and the second insulating clamp and the first insulating clamp are arranged at intervals. The coil is sleeved on the iron core and positioned between the first insulating clamping piece and the second insulating clamping piece, one side of the coil abuts against the first insulating clamping piece, and the other side of the coil abuts against the second insulating clamping piece.

Therefore, the mode of fixing the iron core and the coil through the first insulation clamping piece in a detachable mode is used for reducing the electrical insulation distance between each part, and meanwhile, the iron core and the coil are convenient to maintain.

In a possible embodiment, the connector further includes a third connecting rod having a first end and a second end disposed opposite to each other, the first end being connected to the first insulating clamp, and the second end being connected to the second insulating clamp.

In a possible embodiment, the first insulating clip further includes a connecting member, the connecting member connects the first portion and the second portion, and the first end of the third connecting rod penetrates through the first portion and the second portion and then connects to the connecting member.

In a possible embodiment, the connecting member has a first positioning hole, and the first positioning hole is opened in a direction away from a side of the second insulating clip.

In a possible implementation manner, the cable connector further includes a first pull handle and a second pull handle, the first pull handle is disposed on a side of the first portion facing away from the second insulation clamp, and the second pull handle is disposed on a side of the second portion facing away from the second insulation clamp; the first handle and the second handle are arranged oppositely.

In a possible implementation manner, the second insulating clamp includes a third portion, a fourth portion, and a second connecting rod, the second connecting rod connects the third portion and the fourth portion, and the third portion, the fourth portion, and the second connecting rod surround to form the second accommodating space; and the third portion and the fourth portion are connected with the second end of the third connecting rod.

In a possible embodiment, the first insulating clip is provided with a first abutting portion, which is arranged towards the coil; the first abutting portion and the first insulating clamping piece are integrally formed.

In a possible embodiment, the second insulating clamp is provided with a second abutting portion, which is arranged towards the coil; the second abutting portion and the second insulating clamp are integrally formed.

In a possible embodiment, the second abutting portion is provided with a groove, and the groove is disposed toward the coil.

In a possible implementation manner, the clamping device further comprises an insulating pad foot, and the insulating pad foot is arranged on one side, away from the first insulating clamp, of the second insulating clamp.

Drawings

Fig. 1 is a schematic structural diagram of a transformer according to a first embodiment of the present application.

Fig. 2 is a schematic structural diagram of a first insulating clip of the transformer shown in fig. 1.

Fig. 3 is a schematic structural diagram of a first portion and a second portion of a first insulating clip of the transformer shown in fig. 1.

Fig. 4 is a schematic structural view of a second insulating clip of the transformer shown in fig. 1.

Fig. 5 is a schematic structural diagram of a third portion and a fourth portion of a second insulating clip of the transformer shown in fig. 1.

Fig. 6 is a schematic structural view of an insulation pad in the transformer shown in fig. 1.

Description of the main elements

Transformer 100

Iron core 10

Coil 20

First insulating clip 30

First part 31

First handle 311

Second part 32

Second handle 321

First connecting rod 33

The first accommodation space 34

Connecting piece 35

First positioning hole 351

The first abutting portion 36

Groove 37

Second insulating clamp 40

Third part 41

Fourth section 42

Second connecting rod 43

The second accommodating space 44

Second abutting portion 45

Second positioning hole 46

Third connecting rod 50

First end 51

Second end 52

Insulating foot pad 60

Through hole 61

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. 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 to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply 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 above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and 2, a transformer 100 according to a first embodiment of the present invention includes a core 10, a first insulating clip 30, a second insulating clip 40, and a coil 20.

Referring to fig. 3, the first insulating clip 30 includes a first portion 31, a second portion 32 and a first connecting rod 33, the first connecting rod 33 connects the first portion 31 and the second portion 32, and the first portion 31, the second portion 32 and the first connecting rod 33 surround to form a first accommodating space 34. The second insulating clamp 40 has a second receiving space 44, the core 10 is partially received in the second receiving space 44, and the second insulating clamp 40 is spaced apart from the first insulating clamp 30. The coil 20 is wound and formed, and then is sleeved on the iron core 10 and located between the first insulating clamp 30 and the second insulating clamp 40.

It should be noted that the first insulating clip 30 and the second insulating clip 40 are made of insulating material to avoid eddy current phenomenon and local heat generation problem caused by leakage flux. Meanwhile, the insulating material can effectively shorten the electrical insulation distance between the coil 20 and the first and second insulating clamps 30 and 40, so that the transformer 100 has a more compact structure and improved economy. The insulating material can be wood, plastic, etc., and in the embodiment, the first insulating clip 30 and the second insulating clip 40 are preferably wood clips.

The first insulating clip 30 is configured as a first portion 31 and a second portion 32 that are detachable, and can be adjusted in a small range according to the specifications of the coil 20 and the core 10. The first connecting rod 33 laterally connects and constrains the first portion 31 and the second portion 32. In this embodiment, the first connecting rod 33 penetrates through the first portion 31 and the second portion 32, and the penetrated portion is limited by a nut. Meanwhile, the detachable first insulating clip 30 facilitates adjustment of the core 10 and the coil 20, thereby improving maintainability of the transformer 100.

In the present embodiment, three sets of coils 20 are included, but the number and the structure of the coils 20 and the core 10 are not particularly limited in the present application. The coil 20 is wound around the core 10 and disposed between the first insulating clip 30 and the second insulating clip 40, and the first insulating clip 30 and the second insulating clip 40 clamp the core 10 and the coil 20 therebetween. And the first insulating clamp piece 30 and the second insulating clamp piece 40 respectively limit the iron core 10 from the upper direction and the lower direction, so that the iron core 10 is positioned at a higher speed, the distance is shorter, and each part is more compact.

In an embodiment, the transformer 100 further includes a third connecting rod 50, the third connecting rod 50 has a first end 51 and a second end 52 that are disposed oppositely, the first end 51 is connected to the first insulating clamp 30, the second end 52 is connected to the second insulating clamp 40, and the third connecting rod 50 connects the first insulating clamp 30 to the second insulating clamp 40, so as to further limit and compress the coil 20, thereby making the structure of the transformer 100 more compact and reducing the occupied space. Including 2 eight third connecting rods 50 of 4 evenly distributed in this embodiment, improve joint strength and spacing effect when balanced atress. The third connecting rod 50 in this embodiment adopts the blackened bolt to establish the wrinkle straight tube in order to strengthen the insulating effect in the outside cover, this application does not make the restriction to specific structure, with the connection and the insulating nature purpose that realize according with intensity.

In an embodiment, the first insulating clip 30 further includes two connecting members 35, the connecting members 35 are respectively connected to two ends of the first portion 31 and the second portion 32 from the top, and the first end 51 of the third connecting rod 50 passes through the first portion 31 and the second portion 32 and then is connected to the connecting members 35. In this embodiment, the first end 51 sequentially penetrates through the first portion 31 and the connecting member 35 and then is connected with a nut, or sequentially penetrates through the second portion 32 and the connecting member 35 and then is connected with a nut, so as to realize fixing and limiting. The second end 52 is also secured and retained by a nut after passing through the second insulator clip 40.

In an embodiment, the connecting member 35 defines a first positioning hole 351, and a side of the first positioning hole 351 facing away from the second insulating clip 40 is disposed toward the top for connecting with a top case cover (not shown) of the transformer 100 through a hanging screw (not shown). In this embodiment, two first positioning holes 351 are formed on each connecting member 35 to balance the force applied to the top cover.

In an embodiment, the clip further includes a first handle 311 and a second handle 321, the first handle 311 is disposed on a side of the first portion 31 facing away from the second insulating clip 40, and the second handle 321 is disposed on a side of the second portion 32 facing away from the second insulating clip 40. The first handle 311 is disposed opposite to the second handle 321. When the pull belt is used, a pull belt (not shown) can simultaneously pass through the first pull handle 311 and the second pull handle 321, and the first pull handle 311 and the second pull handle 321 are driven by contracting the pull belt, so that the connection between the first part 31 and the second part 32 is more compact.

Referring to fig. 4 and 5, in an embodiment, the second insulating clip 40 includes a third portion 41, a fourth portion 42 and a second connecting rod 43, the second connecting rod 43 connects the third portion 41 and the fourth portion 42, and the third portion 41, the fourth portion 42 and the second connecting rod 43 surround to form a second accommodating space 44. And the third and fourth portions 41, 42 are connected to a second end 52 of a third connecting rod 50. In this embodiment, the third portion 41 is connected to the first portion 31 by four third connecting bars 50, and the fourth portion 42 is connected to the second portion 32 by four third connecting bars 50.

Thus, the split type clip design capable of adjusting the narrow side of the iron core 10 can adapt to iron cores 10 and coils 20 with different widths, so as to improve the general usability.

In one embodiment, the first insulating clip 30 has a first abutting portion 36, and the first abutting portion 36 is disposed toward the coil 20. The first abutting portion 36 is integrally formed with the first insulating clip 30. The second insulating clip 40 has a second abutting portion 45, and the second abutting portion 45 is disposed toward the coil 20. The second abutting portion 45 and the second clamping member 40 are integrally formed.

In this embodiment, four first abutting portions 36 are sequentially arranged on the first portion 31 at intervals, four first abutting portions 36 are sequentially arranged on the second portion 32 at intervals, and the widths of the first abutting portions 36 located at the four corners of the edge are wider than those of the four first abutting portions 36 located inside, so as to limit the narrow side of the top of the iron core 10. Correspondingly, the third portion 41 is sequentially provided with four second abutting portions 45, the fourth portion 42 is sequentially provided with four second abutting portions 45, and the second abutting portions 45 at the four corners of the edge have a wider width, so as to limit the narrow side of the bottom of the iron core 10.

The first abutting portion 36 and the second abutting portion 45 abut against the coil 20 from the upper direction and the lower direction to further achieve the fixing effect, and the integrally formed first abutting portion 36 and the second abutting portion 45 can improve the structural strength, so that the transformer 100 has a certain capability of resisting burst short circuit.

Referring to fig. 6, in an embodiment, the insulating clip further includes an insulating pad 60, and the insulating pad 60 is disposed on a side of the second insulating clip 40 away from the first insulating clip 30. In this embodiment, through holes 61 are formed on both sides of each insulating pad 60 for connecting with positioning pins at the bottom of the fuel tank (not shown) to position the second insulating clamp 40. The insulating foot 60 is also integrally manufactured to ensure structural strength. Meanwhile, the top shape of the insulating foot 60 is matched with the iron core 10, so as to improve the fixing effect on the iron core 10. The bottom of the insulating pad 60 is provided with a through groove for receiving the bolt and the nut for connecting the second insulating clamp 40 and the insulating pad 60, so as to prevent the bolt and the nut from extending out and affecting the stability of the insulating pad 60.

In this embodiment, the second insulating clamp 40 further has a second positioning hole 46, the second positioning hole 46 is located between the adjacent second abutting portions 45, and the screw rod connecting the second insulating clamp 40 and the insulating pad 60 is inserted from the second positioning hole 46 to maintain the electrical insulation distance between the screw rod and the coil 20.

Referring to fig. 3 and 5, in an embodiment, the first insulating clamp 30 and the second insulating clamp 40 are formed with a groove 37 for guiding the transformer oil for cooling, so as to accelerate the flow rate of the oil and improve the cooling effect. In this embodiment, the groove 37 is disposed on the first abutting portion 36 and the second abutting portion 45, and the groove 37 is disposed toward the coil 20.

The screws adopted in the embodiment are all blackened bolts so as to improve the connection strength and the economical efficiency.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims (10)

1. A transformer, comprising:

an iron core;

the first insulation clamping piece comprises a first part, a second part and a first connecting rod, wherein the first connecting rod is connected with the first part and the second part, the first part, the second part and the first connecting rod surround to form a first accommodating space, and the iron core part is accommodated in the first accommodating space;

the second insulating clamping piece is provided with a second accommodating space, the iron core part is accommodated in the second accommodating space, and the second insulating clamping piece and the first insulating clamping piece are arranged at intervals;

and the coil is sleeved on the iron core and positioned between the first insulating clamping piece and the second insulating clamping piece, one side of the coil abuts against the first insulating clamping piece, and the other side of the coil abuts against the second insulating clamping piece.

2. The transformer of claim 1, further comprising a third connecting rod having first and second ends disposed opposite one another, the first end connected to the first insulator clip and the second end connected to the second insulator clip.

3. The transformer of claim 2, wherein the first insulating clip further comprises a connector connecting the first portion and the second portion, and wherein the first end of the third connecting rod extends through the first portion and the second portion and is connected to the connector.

4. The transformer of claim 3, wherein the connector defines a first locating hole, the first locating hole being oriented away from a side of the second insulator clip.

5. The transformer of claim 3, further comprising a first pull tab and a second pull tab, the first pull tab disposed on a side of the first portion facing away from the second insulator clip, the second pull tab disposed on a side of the second portion facing away from the second insulator clip; the first handle and the second handle are arranged oppositely.

6. The transformer of claim 2, wherein the second insulation clamp comprises a third portion, a fourth portion, and a second connecting rod, the second connecting rod connects the third portion and the fourth portion, and the third portion, the fourth portion, and the second connecting rod surround to form the second accommodating space; and the third portion and the fourth portion are connected with the second end of the third connecting rod.

7. The transformer of claim 1, wherein the first insulating clip is provided with a first abutting portion disposed toward the coil; the first abutting portion and the first insulating clamp are integrally formed.

8. The transformer of claim 1, wherein the second insulating clip is provided with a second abutting portion, the second abutting portion being disposed toward the coil; the second abutting portion and the second insulating clamp are integrally formed.

9. The transformer of claim 8, wherein the second abutting portion is formed with a groove, and the groove is disposed toward the coil.

10. The transformer of claim 1, further comprising an insulating foot disposed on a side of the second insulating clamp facing away from the first insulating clamp.

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