CN115132470A - Wire outlet terminal suitable for elastic insulator encapsulated dry type variable winding - Google Patents
Wire outlet terminal suitable for elastic insulator encapsulated dry type variable winding Download PDFInfo
- Publication number
- CN115132470A CN115132470A CN202210868535.5A CN202210868535A CN115132470A CN 115132470 A CN115132470 A CN 115132470A CN 202210868535 A CN202210868535 A CN 202210868535A CN 115132470 A CN115132470 A CN 115132470A
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- China
- Prior art keywords
- outlet terminal
- elastic insulator
- clamping plate
- winding
- copper nut
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Bodies (AREA)
Abstract
The invention discloses an outlet terminal suitable for an elastic insulator encapsulated dry-type transformer winding, which comprises: copper nuts and snap-gauge boards; the copper nut is cylindrical and comprises a square body and a cylinder, and the end part of the cylinder is connected with a wire outlet end of the variable winding to form a wire outlet terminal of the variable winding; the middle of the clamping plate is provided with a square hole, the square body of the copper nut is embedded into the square hole, the copper nut is fixed on the clamping plate, and the clamping plate and the elastic insulator are integrated after the copper nut is fixed. The invention can strengthen and adapt to the elastic insulator encapsulated winding.
Description
Technical Field
The invention relates to a wire outlet terminal suitable for an elastic insulator encapsulated dry-type transformer winding, and belongs to the technical field of dry-type transformers.
Background
The main type of the dry-type transformer is an epoxy resin encapsulated dry-type transformer, the epoxy resin has stable insulating property, but the epoxy resin is a rigid body after being cured, and the hidden danger of cracking is generated under specific operating conditions, so that the problem of cracking under extreme environments can be avoided by using rubber elastomers to replace epoxy resin for winding encapsulation. Meanwhile, the rubber elastic insulator is used for encapsulating the winding, and special treatment is needed for the outgoing line terminal which is often contacted with external force so as to meet the requirement of mechanical strength.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an outlet terminal suitable for an elastic insulator encapsulated dry type transformer winding, which can strengthen and adapt to the elastic insulator encapsulated winding. In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention provides an outlet terminal suitable for an elastic insulator encapsulated dry type transformer winding, which comprises:
copper nuts and snap-gauge boards;
the copper nut is cylindrical and comprises a square body and a cylinder, and the end part of the cylinder is connected with a wire outlet end of the variable winding to form a wire outlet terminal of the variable winding;
the middle of the clamping plate is provided with a square hole, the square body of the copper nut is embedded into the square hole, the copper nut is fixed on the clamping plate, and the clamping plate and the elastic insulator are integrated after the copper nut is fixed.
Furthermore, a plurality of through holes are uniformly distributed around the square hole and are used for penetrating and fusing the clamping plate and the elastic insulator.
Furthermore, tooth-shaped structures are arranged on the periphery of the clamping plate and are used for penetrating and fusing the clamping plate and the elastic insulator.
Furthermore, the elastic insulator is made of silicon rubber or nitrile rubber, and is obtained by vulcanizing and fixing after liquid vacuum pressure potting of the transformer winding.
Further, the card is surface-roughened and coated with a coupling agent for increasing the adherence of the card to the resilient insulator.
Furthermore, the clamping plate is made of one of a silicone rubber plate with the Shore hardness of more than 65 degrees, an epoxy glass cloth laminated plate, a diphenyl ether glass cloth plate and a polyimide glass cloth plate.
Further, the inner diameter of the square hole is consistent with the outer diameter of the square body, and the square hole is used for clamping the copper nut.
Compared with the prior art, the outlet terminal suitable for the elastic insulator-encapsulated dry-type transformer winding provided by the embodiment of the invention has the following beneficial effects:
the invention comprises the following steps: copper nuts and snap-gauge boards; the copper nut is cylindrical and comprises a square body and a cylinder, and the end part of the cylinder is connected with a wire outlet head of the variable winding to form a wire outlet terminal of the variable winding; the middle of the clamping plate is provided with a square hole, the square body of the copper nut is embedded into the square hole, the copper nut is fixed on the clamping plate, and the clamping plate and the elastic insulator are integrated after the copper nut is fixed. The copper nut and the clamping plate are fixed, and the copper nut fixing device is simple in structure, easy to operate and good in fixing effect. After the copper nut is fixed with the clamping plate, the clamping plate is tightly fused with the elastic insulator into a whole, so that the interphase insulation can be better optimized, the interphase distance is reduced, and the vibration noise of the interphase partition plate is avoided.
The invention has simple structure, does not increase cost, ensures the mechanical strength of the winding outlet terminal, and can solve the problem that the outlet terminal of the product is easy to tear.
Drawings
Fig. 1 is a structural diagram of an outlet terminal suitable for an elastic insulator encapsulated dry type transformer winding in embodiment 1 of the present invention;
FIG. 2 is a schematic view of a copper nut in embodiment 1 of the present invention;
FIG. 3 is a schematic view of a card board in embodiment 1 of the invention;
FIG. 4 is a schematic view of a card board in embodiment 2 of the invention;
fig. 5 is a schematic view of a card for disassembling a terminal in embodiment 3 of the present invention.
In the figure: 1. 1-1 part of copper nut, 1-2 parts of square body and 1-2 parts of cylinder;
2. cardboard, 2-1, square hole, 2-2, profile of tooth structure, 2-3: a through hole.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1:
as shown in fig. 1, the present embodiment provides an outlet terminal suitable for an elastic insulator-encapsulated dry type transformer winding, which includes a copper nut 1 and a card board 2.
As shown in fig. 2, the copper nut 1 is cylindrical and includes a square body 1-1 and a cylinder 1-2, and an end of the cylinder 1-2 is connected to an outlet terminal of the variable winding to form an outlet terminal of the variable winding. Internal threads are arranged inside the square body 1-1. Preferably, the square 1-1 can be changed into a copper stud, and the rest of the structure is the same as that of the copper nut 1.
As shown in figure 3, a square hole 2-1 is formed in the middle of the clamping plate 2, a square body 1-1 of the copper nut 1 is embedded into the square hole 2-1, the inner diameter of the square hole 2-1 is consistent with the outer diameter of the square body 1-1, and the copper nut 1 is fixed on the clamping plate 2. The periphery of the clamping plate 2 is provided with a tooth-shaped structure 2-2, in the embodiment, the tooth-shaped structure 2-2 is a groove, and the groove is used for penetrating and fusing the clamping plate 2 and the elastic insulator. A plurality of through holes 2-3 are uniformly distributed around the square hole 2-1, and the through holes 2-3 are used for penetrating and fusing the clamping plate 2 and the elastic insulator.
The elastic insulator is made of silicon rubber or nitrile rubber, and is obtained by vulcanizing and fixing after the transformer winding is encapsulated by liquid vacuum pressure.
The clamping plate 2 is made of one of a silicone rubber plate with the Shore 65 degrees or above, an epoxy glass cloth laminated plate, a diphenyl ether glass cloth plate and a polyimide glass cloth plate. The card 2 is surface-roughened and coated with a coupling agent for increasing the adherence of the card 2 to the elastic insulator.
Example 2:
an outlet terminal suitable for an elastic insulator-encapsulated dry-type variable winding comprises a copper nut 1 and a clamping plate 2. In the present embodiment, the copper nut 1 has the same structure as the copper nut 1 in embodiment 1.
As shown in fig. 4, the card 2 in the present embodiment is a modification of the card 2 in embodiment 1. The middle of the clamping plate 2 is provided with a square hole 2-1, a square body 1-1 of the copper nut 1 is embedded into the square hole 2-1, and the inner diameter of the square hole 2-1 is consistent with the outer diameter of the square body 1-1, so that the copper nut 1 is fixed on the clamping plate 2. The periphery of the clamping plate 2 is provided with a tooth-shaped structure 2-2, in the embodiment, the tooth-shaped structure 2-2 is a convex tooth, and the convex tooth is used for penetrating and fusing the clamping plate 2 and the elastic insulator. A plurality of through holes 2-3 are uniformly distributed around the square hole 2-1, and the through holes 2-3 are used for penetrating and fusing the clamping plate 2 and the elastic insulator.
The elastic insulator is made of silicon rubber or nitrile rubber, and is obtained by vulcanizing and fixing after the transformer winding is encapsulated by liquid vacuum pressure.
The clamping plate 2 is made of one of a silicone rubber plate with a Shore 65 degree or above, an epoxy glass cloth laminated plate, a diphenyl ether glass cloth plate and a polyimide glass cloth plate. The card 2 is surface-roughened and coated with a coupling agent for increasing the adherence of the card 2 to the elastic insulator.
Example 3:
an outlet terminal suitable for an elastic insulator-encapsulated dry-type variable winding comprises a copper nut 1 and a clamping plate 2. In the present embodiment, the copper nut 1 has the same structure as the copper nut 1 in embodiment 1.
As shown in fig. 5, the card 2 in the present embodiment is a representation of the tap terminal card 2 of the card 2 in embodiment 1. The middle of the clamping plate 2 is provided with a plurality of square holes 2-1, the inner diameter of each square hole 2-1 is consistent with the outer diameter of each square 1-1 of each copper nut 1, and the square 1-1 of each copper nut 1 is embedded into the square hole 2-1, so that the copper nut 1 is fixed on the clamping plate 2. The periphery of the clamping plate 2 is provided with a tooth-shaped structure 2-2, in the embodiment, the tooth-shaped structure 2-2 is a groove, and the groove is used for penetrating and fusing the clamping plate 2 and the elastic insulator. A plurality of through holes 2-3 are uniformly distributed around the square hole 2-1, and the through holes 2-3 are used for penetrating and fusing the clamping plate 2 and the elastic insulator.
The elastic insulator is made of silicon rubber or nitrile rubber, and is obtained by vulcanizing and fixing after the transformer winding is encapsulated by liquid vacuum pressure.
The clamping plate 2 is made of one of a silicone rubber plate with the Shore 65 degrees or above, an epoxy glass cloth laminated plate, a diphenyl ether glass cloth plate and a polyimide glass cloth plate. The card 2 is surface-roughened and coated with a coupling agent for increasing the adherence of the card 2 to the elastic insulator.
In summary, although the elastic insulator has a weak tearing resistance, through the above structure, the copper nut 1 is clamped in the clamping plate 22, and the clamping plate 2 is tightly fused with the elastic insulator, so as to ensure the mechanical strength of the winding outlet terminal. The method is simple and easy to implement, and does not increase the cost.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An outlet terminal adapted for use in a resilient insulator-encapsulated dry-type transformer winding, comprising: copper nuts and snap-gauge boards;
the copper nut is cylindrical and comprises a square body and a cylinder, and the end part of the cylinder is connected with a wire outlet end of the variable winding to form a wire outlet terminal of the variable winding;
the middle of the clamping plate is provided with a square hole, the square body of the copper nut is embedded into the square hole, the copper nut is fixed on the clamping plate, and the clamping plate and the elastic insulator are integrated after the copper nut is fixed.
2. The outlet terminal for the dry type transformer winding wrapped by the elastic insulator as claimed in claim 1, wherein a plurality of through holes are uniformly distributed around the square hole, and the through holes are used for penetrating and fusing the clamping plate and the elastic insulator.
3. The outlet terminal adapted for an elastic insulator wrapped dry-type variable winding of claim 2, wherein the card board is provided with a castellated structure around the card board, the castellated structure is used for penetrating and fusing the card board and the elastic insulator.
4. The outlet terminal suitable for the elastic insulator-encapsulated dry-type transformer winding as claimed in claim 3, wherein the elastic insulator is made of silicon rubber or nitrile rubber, and is obtained by vulcanizing and fixing after the transformer winding is encapsulated by liquid vacuum pressure.
5. An outlet terminal adapted for use with a resilient insulator-encapsulated dry-type variable winding as claimed in claim 3, wherein said card is surface roughened and coated with a coupling agent for increasing the adherence of the card to the resilient insulator.
6. The outlet terminal adapted for an elastic insulator wrapped dry type variable winding of claim 1, wherein the material of the clamping plate is one of a silicone rubber plate with a shore degree of 65 ° or more, an epoxy glass cloth laminated plate, a diphenyl ether glass cloth plate and a polyimide glass cloth plate.
7. The outlet terminal adapted for a resilient insulator wrapped dry type variable winding of claim 1, wherein the inside diameter of the square hole conforms to the outside diameter of the square, the square hole for retaining a copper nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868535.5A CN115132470A (en) | 2022-07-22 | 2022-07-22 | Wire outlet terminal suitable for elastic insulator encapsulated dry type variable winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868535.5A CN115132470A (en) | 2022-07-22 | 2022-07-22 | Wire outlet terminal suitable for elastic insulator encapsulated dry type variable winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115132470A true CN115132470A (en) | 2022-09-30 |
Family
ID=83384785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210868535.5A Pending CN115132470A (en) | 2022-07-22 | 2022-07-22 | Wire outlet terminal suitable for elastic insulator encapsulated dry type variable winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115132470A (en) |
-
2022
- 2022-07-22 CN CN202210868535.5A patent/CN115132470A/en active Pending
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