CN211265247U - End insulation and vehicle-mounted transformer coil with end insulation - Google Patents
End insulation and vehicle-mounted transformer coil with end insulation Download PDFInfo
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- CN211265247U CN211265247U CN202020430588.5U CN202020430588U CN211265247U CN 211265247 U CN211265247 U CN 211265247U CN 202020430588 U CN202020430588 U CN 202020430588U CN 211265247 U CN211265247 U CN 211265247U
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Abstract
The utility model discloses an end insulation and mounting the end insulation vehicle-mounted transformer coil, which comprises an annular ring and a plurality of cushion blocks adhered to one axial end of the annular ring, wherein the other axial end of the annular ring is adhered to the axial end face of the coil; the cushion block extends two antennae towards the radial inner side and the radial outer side of the annular ring respectively, and a stay accommodating space is formed between opposite surfaces of the two antennae positioned on the same side; the annular ring and the cushion block are made of insulating materials. The utility model discloses it is insulating to increase the tip at the axial terminal surface of coil, utilizes the contact of radial extension to carry the stay, except having the effect that increases insulation distance, can also effectively fix the interior stay and the outer stay of coil, guarantees that the stay is unmovable, not run the position, can not block up the oil duct simultaneously and influence the transformer temperature rise.
Description
Technical Field
The utility model relates to a transformer field especially relates to an end insulation and installation end insulation's on-vehicle transformer coil.
Background
During transformer ware body is insulating, often placed interior stay and outer stay respectively in the coil inboard and the outside, formed the heat dissipation oil duct between the stay, interior stay and outer stay extend along the axial of coil, increase coil bulk strength simultaneously. Conventional transformer coil erects the suit on transformer core, and the center pin that also is the coil is vertical state, and interior stay and outer stay all are in vertical state this moment, are difficult for askew, drop in vertical direction, need not special fixed.
Unlike conventional transformers, vehicle-mounted transformers are installed at the bottom of a vehicle, and in order to reduce the height, the coil is designed to be horizontal, namely, the central axis of the coil is horizontal, and the inner stay and the outer stay are influenced by gravity, vibration and the like, so that the situations of displacement, falling and the like are likely to occur.
The temperature rise of the vehicle-mounted transformer is high, and if a conventional stay positioning piece is additionally arranged to solve the problem, the positioning piece is bent and deformed after being soaked and expanded in oil, so that the risk of blocking an oil duct is caused, and the temperature rise of the vehicle-mounted transformer is disadvantageously controlled.
In conclusion, how to avoid the stay of the vehicle-mounted transformer from shifting and avoid the risk of blocking the oil passage is the technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
In order to solve the influence such as the inside and outside stay of coil receives gravity, vibrations among the on-vehicle transformer among the prior art, the technical problem that probably can take place to shift, drop very much, the utility model provides an end insulation and installation the on-vehicle transformer coil of end insulation solves above-mentioned problem.
The utility model provides an end insulation, which comprises an annular ring and a plurality of cushion blocks which are pasted on one axial end of the annular ring in a circumferential array way, wherein the other axial end of the annular ring is pasted with the axial end face of a coil; the cushion block extends two antennae towards the radial inner side and the radial outer side of the annular ring respectively, and a stay accommodating space is formed between opposite surfaces of the two antennae positioned on the same side; the annular ring and the cushion block are made of insulating materials.
Preferably, the cushion block is made of T4 laminated paperboard; the annular ring is made of a thick paperboard, and the thickness of the annular ring is 2 mm.
Preferably, the inner diameter and the outer diameter of the annular ring are the same as the inner diameter and the outer diameter of the coil, respectively.
Furthermore, each cushion block comprises a substrate adhered to the annular ring, the antenna extends outwards from the edge of the substrate, and a stay accommodating space is formed on two opposite sides of the substrate.
The utility model also provides a vehicle-mounted transformer coil, including the interior fiber container, coil and the outer fiber container of establishing of cover in proper order from inside to outside, and the laminating the axial terminal surface setting of coil more than one or more the tip insulation, the circumference array has arranged a plurality of interior stays between interior fiber container and the coil, the circumference array has arranged a plurality of outer stays between coil and the outer fiber container; each inner stay and each outer stay are clamped between two antennae of the cushion block.
Preferably, the symmetry axes of each inner stay and each outer stay are located in the same plane, and the inner stay and the outer stay are respectively clamped between the antennae of each cushion block.
Preferably, the length of the antenna extending along the radial direction is slightly smaller than the thickness of the stay located in the stay accommodating space corresponding to the antenna.
Preferably, the distance between the two antennae at each stay accommodating space is slightly larger than the width of the stay positioned in the stay accommodating space.
The utility model has the advantages that:
(1) the utility model discloses it is insulating to increase the tip at the axial terminal surface of coil, utilizes the contact of radial extension to carry the stay, except having the effect that increases insulation distance, can also effectively fix the interior stay and the outer stay of coil, guarantees that the stay is unmovable, not run the position, can not block up the oil duct simultaneously and influence the transformer temperature rise.
(2) The utility model provides an annular circle and cushion all adopt the stereoplasm cardboard to make, and insulating effectual, structural strength is high.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of the end insulation of the present invention;
FIG. 2 is a front view of the spacer of the present invention;
fig. 3 is an axial sectional view of the coil of the on-board transformer according to the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
fig. 5 is a sectional view taken along line B-B of fig. 3.
In the figure, 1, an annular ring, 2, a cushion block, 201, a base plate, 202, an inner antenna, 203, an outer antenna, 3, an inner paper tube, 4, an inner stay, 5, a coil, 6, an outer stay, 7, an outer paper tube, 8, end insulation, 9 and a stay accommodating space.
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 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 exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "vertical", "horizontal", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In embodiment 1, an end portion insulator for supporting and limiting a stay of a coil 5 of a vehicle-mounted transformer includes an annular ring 1 and a plurality of cushion blocks 2 which are circumferentially arrayed and adhered to one axial end of the annular ring 1, and the other axial end of the annular ring 1 is adhered to an axial end face of the coil 5; the cushion block 2 extends two antennae towards the radial inner side and the radial outer side of the annular ring 1 respectively, and a stay accommodating space 9 is formed between the opposite surfaces of the two antennae positioned on the same side; the annular ring 1 and the cushion block 2 are made of insulating materials.
In the embodiment, the cushion block 2 is made of T4 laminated paperboard; the annular ring 1 is made of a thick paperboard, and the thickness of the annular ring 1 is 2 mm.
As shown in fig. 1 to 3, the annular ring 1 is a circular ring structure, and has the same shape as the end surface of the coil 5, sixteen spacers 2 are arranged in a circumferential array, each spacer 2 has two inner antennae 202 extending to the radial inner side of the annular ring 1, and two outer antennae 203 extending to the radial outer side of the annular ring 1, a stay accommodating space 9 formed by the two inner antennae 202 is used for accommodating the inner stay 4, and a stay accommodating space 9 formed by the two outer antennae 203 is used for accommodating the outer stay 6. The annular ring 1 can increase the insulation distance, and the arrangement of the inner antenna 202 and the outer antenna 203 can prevent the inner stay 4 and the outer stay 6 from shifting or even falling off due to circumferential displacement.
Preferably, the inner diameter and the outer diameter of the annular ring 1 are respectively the same as the inner diameter and the outer diameter of the coil 5, that is, the cross-sectional dimension of the annular ring 1 is the same as the cross-sectional dimension of the coil 5, and the annular ring 1 can be completely arranged to fit the end face of the coil 5.
The concrete structure of cushion 2 does: each cushion block 2 comprises a substrate 201 adhered to the annular ring 1, the antennae extend outwards from the edge of the substrate 201, and a stay accommodating space 9 is formed on two opposite sides of the substrate 201, as shown in fig. 2, the substrate 201 is a rectangular plate, the length of the substrate 201 is approximate to the radial width of the annular ring 1, the four antennae are symmetrically arranged on two sides of the length direction of the substrate 201, two inner antennae 202 are located on one side of the length direction, two outer antennae 203 are located on the other side of the length direction, and the four antennae are arranged close to four top corners of the substrate 201, the substrate 201 and the four antennae are integrally manufactured and formed, the fixing effect of the cushion block 2 and the annular ring 1 can be improved to the maximum extent by the substrate 201, and the structural strength is ensured.
Interior fiber container 3, coil 5 and outer fiber container 7 are inside hollow columnar structure, interior stay 4 and outer stay 6 are rectangular long, as shown in fig. 3-4, form heat dissipation channel between two adjacent interior stays 4, interior fiber container 3 and the coil 5, form heat dissipation channel between two adjacent outer stays 6, outer fiber container 7 and the coil 5, the quantity of cushion 2 is decided by the quantity of interior stay 4 and outer stay 6, interior feeler 202 inwards forms closed loop lock with coil 5 and interior fiber container 3 and dies interior stay 4, outer feeler 203 outwards forms closed loop lock with coil 5 and outer fiber container 7 and dies outer stay 6. In general, the symmetry axes of each of the inner and outer struts 4, 6 are located in the same plane, i.e. the inner and outer struts 4, 6 are arranged in pairs, and each pair of inner and outer struts 4, 6 is arranged between two inner and outer contact corners 202, 203 of each spacer block 2.
Preferably, the length of the antenna extending in the radial direction is slightly smaller than the thickness of the stay located in the stay receiving space 9 corresponding to the antenna, and knowing that the size of each inner stay 4 is the same and the size of each outer stay 6 is the same, the length of the inner antenna 202 extending in the radial direction is slightly smaller than the thickness of the inner stay 4, and the length of the outer antenna 203 extending in the radial direction is slightly smaller than the thickness of the outer stay 6, so that the arrangement of the end insulation 8 can be avoided from changing the radial distance between the outer paper tube 7 and the coil 5 and between the inner paper tube 3 and the coil 5.
Preferably, the distance between the two antennas at each strut receiving space 9 is slightly larger than the width of the strut located in the strut receiving space 9, and knowing that the size of each inner strut 4 is the same and the size of each outer strut 6 is the same, then the distance between the two inner antennas 202 on the same spacer block 2 is slightly larger than the width of the inner strut 4, and the distance between the two outer antennas 203 on the same spacer block 2 is slightly larger than the width of the outer strut 6, so that the antennas of the spacer block 2 can be prevented from being deformed by compression, and the structural strength of the antennas is reduced.
In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. An end insulator, comprising: the coil comprises an annular ring (1) and a plurality of cushion blocks (2) which are circumferentially adhered to one axial end of the annular ring (1), wherein the other axial end of the annular ring (1) is attached to the axial end face of a coil (5);
the cushion block (2) extends two antennae towards the radial inner side and the radial outer side of the annular ring (1), and a stay accommodating space (9) is formed between the opposite surfaces of the two antennae positioned on the same side; the annular ring (1) and the cushion block (2) are made of insulating materials.
2. An end insulation as claimed in claim 1, wherein: the cushion block (2) is made of T4 laminated paperboard; the annular ring (1) is made of a thick paperboard, and the thickness of the annular ring (1) is 2 mm.
3. An end insulation as claimed in claim 1, wherein: the inner diameter and the outer diameter of the annular ring (1) are respectively the same as the inner diameter and the outer diameter of the coil (5).
4. An end insulation as claimed in claim 1, wherein: each cushion block (2) comprises a substrate (201) adhered to the annular ring (1), the antenna extends outwards from the edge of the substrate (201), and a stay accommodating space (9) is formed on two opposite sides of the substrate (201).
5. An on-vehicle transformer coil characterized in that: the coil comprises an inner paper tube (3), a coil (5) and an outer paper tube (7) which are sequentially sleeved from inside to outside, and one or more end insulators (8) which are attached to the axial end face of the coil (5) and are provided according to any one of claims 1 to 4, wherein a plurality of inner supporting strips (4) are arranged between the inner paper tube (3) and the coil (5) in a circumferential array manner, and a plurality of outer supporting strips (6) are arranged between the coil (5) and the outer paper tube (7) in a circumferential array manner; each inner stay (4) and each outer stay (6) are clamped between two antennae of the cushion block (2).
6. The on-board transformer coil of claim 5, wherein: the symmetry axes of each inner stay (4) and each outer stay (6) are located in the same plane, and the inner stay (4) and each outer stay (6) are respectively clamped between the antennae of each cushion block (2).
7. The on-board transformer coil of claim 5, wherein: the length of the antenna extending along the radial direction is slightly smaller than the thickness of the stay positioned in the stay accommodating space corresponding to the antenna.
8. The on-board transformer coil of claim 5, wherein: the distance between the two antennae at each stay accommodating space is slightly larger than the width of the stay positioned in the stay accommodating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020430588.5U CN211265247U (en) | 2020-03-30 | 2020-03-30 | End insulation and vehicle-mounted transformer coil with end insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020430588.5U CN211265247U (en) | 2020-03-30 | 2020-03-30 | End insulation and vehicle-mounted transformer coil with end insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211265247U true CN211265247U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020430588.5U Active CN211265247U (en) | 2020-03-30 | 2020-03-30 | End insulation and vehicle-mounted transformer coil with end insulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562991A (en) * | 2020-11-04 | 2021-03-26 | 广东电网有限责任公司 | Heat radiator for dry-type transformer coil |
-
2020
- 2020-03-30 CN CN202020430588.5U patent/CN211265247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562991A (en) * | 2020-11-04 | 2021-03-26 | 广东电网有限责任公司 | Heat radiator for dry-type transformer coil |
| CN112562991B (en) * | 2020-11-04 | 2022-03-04 | 广东电网有限责任公司 | Heat radiator for dry-type transformer coil |
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