CN219393146U - Iron yoke cushion block wire outlet structure - Google Patents
Iron yoke cushion block wire outlet structure Download PDFInfo
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- CN219393146U CN219393146U CN202320077077.3U CN202320077077U CN219393146U CN 219393146 U CN219393146 U CN 219393146U CN 202320077077 U CN202320077077 U CN 202320077077U CN 219393146 U CN219393146 U CN 219393146U
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Abstract
The utility model belongs to the technical field of transformer manufacturing, and relates to an iron yoke cushion block wire outlet structure, which comprises a wire outlet groove formed in the edge position of the upper surface of an iron yoke cushion block, a special-shaped patch and a polyester heat-shrinkable tube, wherein a special-shaped step structure is arranged at the upper edge position of the wire outlet groove, the shape and the size of the special-shaped patch are matched with those of the wire outlet groove, the special-shaped patch is clamped on the special-shaped step structure of the wire outlet groove to block the wire outlet groove, a plurality of through holes are formed in the special-shaped patch, and the polyester heat-shrinkable tube passes through the through holes and binds wires. The utility model makes the lead wire and the special-shaped patch form a more stable whole, and the special-shaped patch forms a whole through the hanging lugs and the iron yoke cushion block, so that the lead wire is completely fixed on the iron yoke cushion block, and the short-circuit resistance and tolerance of the lead wire are improved.
Description
Technical Field
The utility model relates to an iron yoke cushion block wire outlet structure, and belongs to the technical field of transformer manufacturing.
Background
Transformers are devices that transmit electrical energy, and the transformer coil lead wires pass through a series of insulators that are both the support members and the insulation members of the coils during the extraction from the transformer. The most important insulator at the lower part of the coil is an iron yoke cushion block. To extract the leads, it is necessary to slot the yoke pads. After the iron yoke cushion block is grooved, in order to maintain the original strength and insulation performance, a patch is designed and installed at the corresponding grooved position on the iron yoke cushion block, the upper part of the grooved position is blocked by the patch, and a lead is positioned in a cavity between the grooved iron yoke cushion block and the patch.
When the transformer is short-circuited, the leads are severely dithered by a large electric force. In the prior art, the patch, the iron yoke cushion block and the lead are not fixed with each other; and the patch is pressed by the coil with the weight of tens of tons to tens of tons at the upper part of the patch, and no special limiting and fixing measures are provided. In the process of on-site operation and inspection of the transformer or maintenance of a return factory, the phenomenon that the patch board and the lead wire are shifted can be found, so that hidden danger is generated for safe and stable operation of the transformer.
Through analysis, the existing iron yoke cushion block wire outlet structure has some technical defects, mainly the patch and the lead are not provided with effective limiting and fixing measures, when the transformer vibrates for a long time in the operation process, or when short circuit occurs, the lead is subjected to severe shaking displacement under the action of huge electric force, and meanwhile, the patch is driven to displace.
Disclosure of Invention
Aiming at the technical problems of infinite fixing measures between the lead and the iron yoke cushion block and between the iron yoke cushion block and the patch at present, the utility model can effectively fix the lead and the patch by improving the design structure of the patch, and avoid the hidden trouble of short circuit caused by unfixed lead and patch.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides an iron yoke cushion outlet structure, includes the lead wire outlet groove of seting up at iron yoke cushion upper surface border position, still includes: the special-shaped patch board and the terylene heat-shrinkable tube are provided with special-shaped step structures at the upper edge positions of the lead wire outlet grooves, the shape and the size of the special-shaped patch board are matched with the special-shaped step structures of the lead wire outlet grooves, the special-shaped patch board is clamped on the special-shaped step structures of the lead wire outlet grooves to block the lead wire outlet grooves, a plurality of through holes are formed in the special-shaped patch board, and the terylene heat-shrinkable tube penetrates through the holes and binds the lead wires.
Preferably corrugated cardboard, at the outer Zhou Baoza of the lead.
Preferably, the special-shaped patch comprises an integrally formed hanging lug and a special-shaped patch body, and the hanging lug is positioned at the end part of the special-shaped patch body in the length direction.
Preferably, the iron yoke cushion block is grooved, special-shaped step structures are arranged on two sides of the groove, symmetrical 60mm grooves are formed in the special-shaped step structures, a pair of 60mm hanging lugs matched with the grooves are processed at the end parts of the special-shaped patch body, and phi 10-specification holes are formed in the special-shaped patch body.
The utility model has the following advantages:
the utility model is applied to the wire outlet structure of the iron yoke cushion block of the transformer body, and is used for improving the short circuit resistance of the transformer lead, and the slotting position of the iron yoke cushion block, namely the wiring position of the coil head lead, has concentrated electric field and higher insulation requirement, so that the iron yoke cushion block cannot be reinforced by using glue or a screw rod for drilling at will. This is also a reason why the conventional design structure does not take a fixing measure here, and if the process is not good, it may cause a discharge or the like. The wire outlet structure combines with the improvement of the existing numerical control machine tool processing technology, utilizes the original iron yoke cushion block material, designs the special-shaped step structure on the original iron yoke cushion block, and solves the problems of limiting and reinforcing of the lead and the patch by matching with the special-shaped patch. Meanwhile, the terylene heat-shrinkable tube has the characteristic of heat shrinkage, so at the coil sleeving stage, the lead wire is bound on the special-shaped patch, after the transformer body enters the tank for baking at the later stage, the terylene heat-shrinkable tube further shrinks, so that the lead wire and the special-shaped patch form a firmer whole, and the special-shaped patch forms a whole through the hanging lugs and the iron yoke cushion blocks, so that the lead wire is completely fixed on the iron yoke cushion blocks, and the short-circuit resistance and tolerance of the lead wire are improved.
Drawings
FIG. 1 is a schematic diagram of a conventional iron yoke pad outlet structure;
FIG. 2 is a P-P cross-sectional view of FIG. 1;
FIG. 3 is a schematic diagram of an improved iron yoke pad outlet structure according to an embodiment of the present utility model;
FIG. 4 is a P-P cross-sectional view of FIG. 3;
fig. 5 is a schematic diagram of a typical structure of a special-shaped patch according to an embodiment of the present utility model.
In the figure, 1 is a patch, 2 is an iron yoke cushion block, 3 is a lead wire outlet groove, 4 is a lead wire, 5 is a special-shaped patch, 6 is a terylene heat-shrinkable tube, 7 is a perforation, 8 is a corrugated board, 9 is a hanging lug, and 10 is a special-shaped patch body.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of a conventional iron yoke pad outlet structure; as shown in fig. 2, a P-P cross-sectional view of fig. 1 is shown. An existing iron yoke pad outlet structure, comprising: the wire outlet groove 3 and the patch board 1, the wire outlet groove 3 is arranged at the edge position close to the upper surface of the iron yoke cushion block 2, a step structure is arranged at the upper edge position of the wire outlet groove 3, the shape and the size of the patch board 1 are matched with those of the wire outlet groove 3, the patch board 1 is placed on the step structure of the wire outlet groove 3 to block the wire outlet groove 3, and the wire 4 is led out from a cavity between the wire outlet groove 3 and the patch board 1. In the design of the existing iron yoke cushion block wire outlet structure, mutual fixing measures are not adopted among the patch 1, the iron yoke cushion block 2 and the lead 4, and the patch 1 is not provided with special limiting fixing measures, so that uncertainty of displacement of the lead 4 and the patch 1 is increased. The lead 4 shakes under the action of huge electric force when the transformer is in long-term vibration in the operation process and short circuit occurs, and the patch 1 is driven to move. The lead 4 cannot be effectively fixed for a long time, so that the lead 4 is damaged by vibration, friction and the like, and is accumulated to a certain extent, and a discharge phenomenon occurs, so that potential safety hazards are brought.
FIG. 3 is a schematic diagram of an improved iron yoke pad outlet structure according to an embodiment of the present utility model; as shown in fig. 4, a P-P cross-sectional view of fig. 3 is shown. An improved novel iron yoke cushion block wire outlet structure, comprising: the special-shaped patch board 5 is clamped on the special-shaped step structure of the lead wire outlet groove 3 to block the lead wire outlet groove 3, and the lead wire 4 is led out from a cavity between the lead wire outlet groove 3 and the special-shaped patch board 5. The special-shaped patch 5 and the special-shaped step structure are installed in a clamping mode through the special-shaped structure, and the mutually clamped special-shaped structure can effectively prevent the special-shaped patch 5 from shifting in the horizontal direction.
Fig. 5 is a schematic diagram of a typical structure of a special-shaped patch according to an embodiment of the present utility model. The special-shaped patch 5 with the typical structure comprises an integrated hanger 9 and a special-shaped patch body 10, wherein the hanger 9 is positioned at the end part of the special-shaped patch body 10 in the length direction. A plurality of through perforations 7 are formed in the special-shaped patch body 10, and the terylene heat-shrinkable tube 6 passes through the perforations 7 and binds the leads 4. In order to effectively fix the lead 4 in the lead wire outlet slot 3 without shaking and affecting the heat dissipation of the lead wire 4 caused by the oil flow in the lead wire outlet slot 3, the corrugated board 8 is adopted to bind the lead wire 4, and the corrugated board 8 has good mechanical strength and can allow the oil flow to smoothly pass through, so that after the lead wire 4 is bound by the corrugated board 8, the polyester heat-shrinkable tube 6 passes through the perforation 7, and the lead wire 4, the corrugated board 8 and the special-shaped patch 5 are firmly bound into a whole, so that the lead wire 4 can be well fixed in the lead wire outlet slot 3.
The existing numerical control machine tool machining technology can be used, the iron yoke cushion block 2 is grooved, special-shaped step structures are arranged on two sides of the grooved iron yoke cushion block, and the special-shaped step structures can be provided with symmetrical 60mm grooves (the specific size can be changed according to actual conditions, but the special-shaped step structures are required to be controlled within the machining range of the numerical control machine tool). Correspondingly, a pair of 60mm hanging lugs 9 matched with the grooves are machined at the end part of the special-shaped patch body 10. When the special-shaped patch 5 is placed on the iron yoke cushion block 2, the hanging lugs 9 of the special-shaped patch 5 are matched with the grooves of the iron yoke cushion block 2, so that the special-shaped patch 5 is just clamped in the grooves, and the horizontal displacement of the special-shaped patch 5 is avoided. The structure not only uses glue to bond the special-shaped patch 5, but also introduces other new materials such as a fixing screw rod, and realizes limit fixation on the special-shaped patch 5 while solving the problem of electrical insulation safety. Meanwhile, a perforation 7 with the specification phi 10 is formed on the special-shaped patch body 10 and is used for the subsequent penetration of the terylene heat-shrinkable tube 6.
After the transformer body in the later stage is baked, the polyester heat-shrinkable tube 6 is further shrunk and tensioned by utilizing the good heat shrinkage characteristic of the polyester heat-shrinkable tube 6, so that the lead 4, the corrugated board 8 and the special-shaped patch 5 form a firmer whole. As described above, the profiled patch 5 is formed integrally with the yoke block 2 via the lugs 9, so that a stable integral is formed between the lead 4 and the profiled patch 5 and yoke block 2. The utility model ensures that the lead 4 is completely fixed on the iron yoke cushion block 2, avoids the possibility of displacement of the lead 4 and the special-shaped patch 5, and improves the short-circuit resistance and tolerance of the lead 4.
In the embodiments of the present utility model, technical features that are not described in detail are all existing technologies or conventional technical means, and are not described herein.
Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Those skilled in the art will appreciate that: any person skilled in the art may modify or easily conceive of changes to the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (4)
1. The utility model provides an indisputable yoke cushion outlet structure, includes lead wire outlet groove (3) of seting up at indisputable yoke cushion upper surface border position, its characterized in that still includes: the special-shaped patch board (5) and the polyester heat-shrinkable tube (6) are arranged at the upper edge of the lead wire outlet groove (3), the shape and the size of the special-shaped patch board (5) are matched with the special-shaped step structure of the lead wire outlet groove (3), the lead wire outlet groove (3) is blocked by the special-shaped patch board (5) in a clamping manner on the special-shaped step structure of the lead wire outlet groove (3), a plurality of through holes (7) are formed in the special-shaped patch board (5), and the polyester heat-shrinkable tube (6) penetrates through the holes (7) and binds the lead wires (4).
2. An iron yoke spacer outlet structure as claimed in claim 1, characterised by corrugated cardboard (8) on the outside Zhou Baoza of the lead (4).
3. The iron yoke cushion block wire outlet structure according to claim 1, wherein the special-shaped patch (5) comprises an integrally formed hanging lug (9) and a special-shaped patch body (10), and the hanging lug (9) is positioned at the end part of the special-shaped patch body (10) in the length direction.
4. A yoke spacer outlet structure according to claim 3, characterized in that a slot is formed in the yoke spacer (2) and special-shaped step structures are arranged on two sides of the slot, the special-shaped step structures are provided with symmetrical 60mm grooves, a pair of 60mm lugs (9) matched with the grooves are processed at the end part of the special-shaped patch (5), and a phi 10-specification through hole (7) is formed in the special-shaped patch body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320077077.3U CN219393146U (en) | 2023-01-09 | 2023-01-09 | Iron yoke cushion block wire outlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320077077.3U CN219393146U (en) | 2023-01-09 | 2023-01-09 | Iron yoke cushion block wire outlet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219393146U true CN219393146U (en) | 2023-07-21 |
Family
ID=87186368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320077077.3U Active CN219393146U (en) | 2023-01-09 | 2023-01-09 | Iron yoke cushion block wire outlet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219393146U (en) |
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2023
- 2023-01-09 CN CN202320077077.3U patent/CN219393146U/en active Active
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