CN215868919U - Transformer yoke insulation structure - Google Patents
Transformer yoke insulation structure Download PDFInfo
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- CN215868919U CN215868919U CN202122419281.2U CN202122419281U CN215868919U CN 215868919 U CN215868919 U CN 215868919U CN 202122419281 U CN202122419281 U CN 202122419281U CN 215868919 U CN215868919 U CN 215868919U
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Abstract
The utility model relates to the technical field of transformers, and aims to provide an iron yoke insulation structure of a transformer. The adopted technical scheme is as follows: an iron yoke insulation structure of a transformer comprises an iron yoke insulation piece arranged between an iron yoke and a coil, and a phase separation plate clamped with the iron yoke insulation piece, wherein the phase separation plate is arranged between two phases of coils; the iron yoke insulating part comprises an iron yoke insulating partition plate and first oil duct supporting strips, the first oil duct supporting strips are arranged on one side, close to the coil, of the iron yoke insulating partition plate, mounting grooves are formed in the first oil duct supporting strips in a matched mode, and the first oil duct supporting strips are clamped in the mounting grooves. The insulating property of the utility model is good, and the heat dispersion of the iron core, the coil and the iron yoke can be improved, and the utility model has simple structure, is convenient for assembly and is beneficial to improving the production efficiency.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to an iron yoke insulation structure of a transformer.
Background
In a traditional 35kV distribution transformer, an iron yoke insulating structure is composed of an end ring structure, a phase partition plate and an iron yoke insulating partition plate, wherein the end ring structure is integrated with a cushion block. However, in the process of using the prior art, the inventor finds that at least the following problems exist in the prior art:
in the iron yoke insulation structure of the transformer in the prior art, the iron yoke partition plate is in a straight plate structure, as shown in fig. 1, the interphase creepage distance is L1+2 × δ, and is short, so that the interphase main insulation creepage distance needs to be increased by increasing the thickness of the iron yoke insulation partition plate, and the height of an iron core window needs to be correspondingly increased; in addition, because the yoke insulating partition is additionally arranged, the oil gap close to the yoke side is blocked by the partition, and the heat dissipation of the iron core and the yoke is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem at least to a certain extent, the utility model provides an iron yoke insulation structure of a transformer.
The technical scheme adopted by the utility model is as follows:
an iron yoke insulation structure of a transformer comprises an iron yoke insulation piece and a phase separation plate, wherein the iron yoke insulation piece and the phase separation plate are arranged between an iron yoke and a coil; the iron yoke insulating part comprises an iron yoke insulating partition plate and a first oil duct stay, the first oil duct stay is arranged on one side, close to the coil, of the iron yoke insulating partition plate, a mounting groove is formed in the first oil duct stay in a matched mode with the phase partition plate, and the phase partition plate is clamped in the mounting groove; the phase partition plate comprises two oppositely arranged bending plates and a base plate arranged between the two bending plates; one end of the first oil duct stay, which is close to the mounting groove, is provided with a slot in a manner of being matched with the bending plate, and one arm of the bending plate, which is far away from the base plate, is clamped in the slot.
In one possible design, the yoke insulator further includes a second oil-passage stay, and the second oil-passage stay is disposed on a side of the yoke insulating spacer, which is close to the yoke.
In one possible design, the first oil passage stay and the second oil passage stay are both bonded to the iron yoke insulating spacer.
In one possible design, the first oil duct stay and the second oil duct stay are respectively provided in plurality, and the plurality of first oil duct stays and the plurality of second oil duct stays are respectively arranged in parallel.
In one possible design, the bending plate is clamped between the end of one arm of the slot and the bottom of the slot to form a gap.
In one possible design, an oil clearance is formed in the middle of the base plate, and a cushion block is arranged in the oil clearance.
The beneficial effects of the utility model are concentrated and expressed as follows:
1) the insulating property is good, the heat dispersion of the iron core, the coil and the iron yoke can be improved, the structure is simple, the assembly is convenient, and the improvement of the production efficiency is facilitated. Specifically, in the present invention, the creepage distance is L1+2 × L2+2 × δ; l1 is the distance between the two ends, L2 is the length of the spacer plate clamped in the yoke insulator, i.e. the width of the bending plate in the spacer plate, and δ is the thickness of the first oil duct stay. In addition, after the phase separation plate is inserted into the iron yoke insulating part, the oil gap delta 1 is still reserved on the first oil duct stay close to the coil side, so that a heat dissipation oil gap can be provided for the coil, and the insulating property and the heat dissipation performance of the utility model are better. Moreover, the integral structure of the oil duct brace is simple, when the oil duct brace is assembled, a user only needs to insert the bending plates of the phase separation plates into the slots preset on the first oil duct brace and then push the backing plates of the phase separation plates into the phase-to-phase positions for binding and fixing, and the oil duct brace is simple, convenient and quick to install and convenient to assemble;
2) due to the arrangement of the second oil duct supporting strips, an oil gap delta 2 also exists on the side, close to the iron yoke, of the iron yoke insulating partition plate, so that a heat dissipation oil gap is provided for the iron core, and the heat dissipation effect of the iron core is further improved;
3) the first oil duct stay and the second oil duct stay are both bonded with the iron yoke insulating partition plate, so that the manufacturing process of the iron yoke insulating part is simpler, and the manufacturing cost is low;
4) the first oil duct supporting strips and the second oil duct supporting strips are arranged in a plurality of numbers, so that the overall strength and the supporting performance of the iron yoke insulating part can be effectively improved;
5) a gap is arranged between the end part of one arm of the slot and the bottom of the slot, and the arrangement of the gap is convenient for radiating the iron core and the coil;
6) the cushion block is used for supporting the oil clearance in the middle of the base plate so as to prevent the oil clearance in the middle of the base plate from being closed, and further the overall service life of the coil cooling device is prolonged and the heat dissipation effect of the coil cooling device is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
FIG. 2 is a schematic structural diagram of an insulation structure of a transformer yoke according to the present invention;
fig. 3 is a side view of a coil of an iron yoke insulator of the present invention;
FIG. 4 is a side view of the iron yoke insulator of the present invention;
fig. 5 is a side view of a yoke of the yoke insulator of the present invention;
FIG. 6 is a schematic view of another view of the iron yoke insulator of the present invention;
FIG. 7 is a schematic view of the construction of the phase separator of the present invention;
fig. 8 is a top view of fig. 7.
In the figure: 1-yoke insulating spacer; 2-a first oil duct stay; 3-mounting grooves; 4-bending a plate; 5-backing plate; 6-slot; 7-a second oil duct stay; 8-cushion block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the embodiments of the present invention, the terms "disposed," "mounted," and "connected" should be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The utility model is further described with reference to the following figures and specific embodiments.
Example 1:
the present embodiment provides an insulation structure for a transformer yoke, as shown in fig. 1 to 8, including a yoke insulator and a phase spacer, which are disposed between a yoke and a coil, the phase spacer being disposed between two phase coils; the iron yoke insulating part comprises an iron yoke insulating partition plate 1 and first oil duct supporting strips 2, the first oil duct supporting strips 2 are arranged on one side, close to the coil, of the iron yoke insulating partition plate 1, mounting grooves 3 are formed in the first oil duct supporting strips 2 in a matched mode with spacing plates, and the spacing plates are clamped in the mounting grooves 3; the phase separation plate comprises two oppositely arranged bending plates 4 and a base plate 5 arranged between the two bending plates 4, and the base plate 5 is perpendicular to the iron yoke insulating partition plate 1; one end of the first oil duct stay 2 close to the mounting groove 3 is matched with the bending plate 4 to be provided with a slot 6, and one arm of the bending plate 4 far away from the backing plate 5 is clamped in the slot 6.
The insulating property of this embodiment is good, can improve the heat dispersion of iron core, coil and yoke simultaneously to simple structure, the assembly of being convenient for does benefit to and improves production efficiency. Specifically, in the present embodiment, the creepage distance is L1+2 × L2+2 × δ; l1 is the distance between the two ends, L2 is the length of the spacer clamped in the yoke insulator, i.e. the width of the bending plate in the spacer, and δ is the thickness of the first oil duct stay 2. In addition, after the phase separation plate is inserted into the iron yoke insulator, the oil gap δ 1 is still reserved in the first oil duct stay 2 close to the coil side, so that a heat dissipation oil gap can be provided for the coil, and the insulation performance and the heat dissipation performance of the embodiment are better. Moreover, the overall structure of this embodiment is simple, when assembling, only need the user insert the bending plate 4 of phase spacer in the slot 6 of predetermineeing on the first oil duct stay 2, then with the backing plate 5 of phase spacer push alternate position carry on the ligature fixed can, simple installation is swift, the assembly of being convenient for.
In this embodiment, the iron yoke insulating member further includes a second oil duct stay 7, and the second oil duct stay 7 is disposed on a side of the iron yoke insulating spacer 1 close to the iron yoke.
It should be noted that in this embodiment, the second oil duct stay 7 is disposed such that the yoke insulating spacer 1 also has the oil gap δ 2 near the yoke side, thereby providing a heat dissipation oil gap for the iron core, and further improving the heat dissipation effect of this embodiment on the iron core.
It should be understood that the first oil-passage stay 2 and the second oil-passage stay 7 are respectively disposed on both sides of the iron yoke insulating spacer 1, and the first oil-passage stay 2 and the second oil-passage stay 7 can provide a good heat dissipation effect to the core, the coil, and the iron yoke.
In this embodiment, the first oil duct stay 2, the second oil duct stay 7, the bending plate 4, and the shim plate 5 are all implemented by using paper plates.
In this embodiment, the first oil duct stay 2 and the second oil duct stay 7 are both bonded to the yoke insulating spacer 1, so that the manufacturing process of the yoke insulating member is simple and the manufacturing cost is low.
In this embodiment, the first oil duct stays 2 and the second oil duct stays 7 are provided in plural numbers, and the plural first oil duct stays 2 and the plural second oil duct stays 7 are respectively provided in parallel. It should be noted that, the first oil duct stay 2 and the second oil duct stay 7 are both provided in plurality, so that the overall strength and the supporting performance of the iron yoke insulating part can be effectively improved.
In this embodiment, a gap is formed between the end of one arm of the slot 6 and the bottom of the slot 6, where the bending plate 4 is clamped. It should be noted that the gap is set to be 4mm long, and the setting of the gap can facilitate heat dissipation of the core and the coil.
In this embodiment, an oil clearance is formed in the middle of the base plate 5, and a cushion block 8 is arranged in the oil clearance. It should be understood that the spacer 8 is used to support the oil gap in the middle of the backing plate 5, so as to prevent the oil gap in the middle of the backing plate 5 from closing, thereby improving the overall life of the present embodiment and the heat dissipation effect of the coil.
Finally, it should be noted that the above-mentioned embodiments should not be construed as limiting the scope of the utility model, which is defined in the claims, which are intended to be interpreted only in accordance with the purpose of the specification.
Claims (6)
1. The utility model provides a transformer yoke insulation system which characterized in that: the coil comprises an iron yoke insulating part and a phase separation plate which are arranged between an iron yoke and a coil, wherein the phase separation plate is arranged between two phases of coils; the iron yoke insulating part comprises an iron yoke insulating partition plate (1) and first oil duct supporting strips (2), the first oil duct supporting strips (2) are arranged on one side, close to the coil, of the iron yoke insulating partition plate (1), mounting grooves (3) are formed in the first oil duct supporting strips (2) in a matched mode with the spacing plates, and the spacing plates are clamped in the mounting grooves (3); the phase partition plate comprises two oppositely arranged bending plates (4) and a base plate (5) arranged between the two bending plates (4); one end of the first oil duct stay (2) close to the mounting groove (3) is matched with the bending plate (4) to be provided with a slot (6), and one arm of the bending plate (4) far away from the backing plate (5) is clamped in the slot (6).
2. The transformer yoke insulation structure of claim 1, wherein: the iron yoke insulating part further comprises a second oil duct stay (7), and the second oil duct stay (7) is arranged on one side, close to the iron yoke, of the iron yoke insulating partition plate (1).
3. The transformer yoke insulation structure of claim 2, wherein: the first oil duct stay (2) and the second oil duct stay (7) are both bonded with the iron yoke insulating partition plate (1).
4. The transformer yoke insulation structure of claim 2, wherein: the first oil duct supporting strips (2) and the second oil duct supporting strips (7) are arranged in a plurality of modes, and the first oil duct supporting strips (2) and the second oil duct supporting strips (7) are arranged in parallel.
5. The transformer yoke insulation structure of claim 1, wherein: and a gap is arranged between the end part of one arm of the slot (6) and the bottom of the slot (6) in a clamping way of the bending plate (4).
6. The transformer yoke insulation structure of claim 1, wherein: an oil clearance is formed in the middle of the base plate (5), and a cushion block (8) is arranged in the oil clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122419281.2U CN215868919U (en) | 2021-09-30 | 2021-09-30 | Transformer yoke insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122419281.2U CN215868919U (en) | 2021-09-30 | 2021-09-30 | Transformer yoke insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215868919U true CN215868919U (en) | 2022-02-18 |
Family
ID=80260332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122419281.2U Active CN215868919U (en) | 2021-09-30 | 2021-09-30 | Transformer yoke insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215868919U (en) |
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2021
- 2021-09-30 CN CN202122419281.2U patent/CN215868919U/en active Active
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Address after: 510000 No.15 Huashan Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province (factory building C) Patentee after: Guangzhou Junfa Electrical Equipment Co.,Ltd. Address before: 510000 No.15 Huashan Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province (factory building C) Patentee before: GUANGZHOU CRRC JUNFA ELECTRIC CO.,LTD. |