CN112002543A - Transformer body structure for enhancing short-circuit resistance of transformer - Google Patents
Transformer body structure for enhancing short-circuit resistance of transformer Download PDFInfo
- Publication number
- CN112002543A CN112002543A CN202010935631.8A CN202010935631A CN112002543A CN 112002543 A CN112002543 A CN 112002543A CN 202010935631 A CN202010935631 A CN 202010935631A CN 112002543 A CN112002543 A CN 112002543A
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- Prior art keywords
- transformer
- iron
- short
- body structure
- irons
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Links
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 91
- 229910052742 iron Inorganic materials 0.000 claims abstract description 41
- 235000000396 iron Nutrition 0.000 claims abstract description 29
- 239000002023 wood Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 229910000746 Structural steel Inorganic materials 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 6
- 230000001965 increasing effect Effects 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a transformer body structure for enhancing the short-circuit resistance of a transformer, which comprises four connecting irons arranged in the width direction of the transformer, wherein sealing plates are welded at two ends of each connecting iron, and the connecting irons are fixed on the transformer body through connecting screws penetrating through the sealing plates at the two ends and transformer clamping pieces; laminated wood boards are arranged between the connecting irons above and below the same side, the connecting irons are connected with the pressing irons, and the laminated wood boards are fixed between the pressing irons and the pressers through the pressing irons. The transformer has a simple structure, can improve the short-circuit resistance of the existing transformer, can effectively weaken the transverse short-circuit force generated by the winding when the transformer is short-circuited, and enhances the sudden short-circuit resistance; for the transformer with larger capacity, the model specifications of the compact iron and the connecting iron are increased.
Description
Technical Field
The invention relates to the technical field of power transformers, in particular to a transformer body structure for enhancing short-circuit resistance of a transformer.
Background
The '10 kv distribution station equipment procurement general technical specification' issued by the national power grid has a clear regulation on the anti-burst short circuit capability of the transformer. The conventional method is to wind a weftless adhesive tape outside a winding to tighten and fix, which can play a certain role, but cannot resist the huge transverse force generated in short circuit, and the transformer winding can be damaged after short circuit.
Therefore, those skilled in the art have made an effort to develop a body structure for enhancing the short-circuit resistance of the transformer, which can reduce the lateral short-circuit force generated by the winding when the transformer is short-circuited.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a body structure for enhancing the short-circuit resistance of a transformer, which can weaken the lateral short-circuit force generated by the winding when the transformer is short-circuited.
In order to achieve the purpose, the invention provides a transformer body structure for enhancing the short-circuit resistance of a transformer, which comprises four connecting irons arranged in the width direction of the transformer, sealing plates are welded at two ends of each connecting iron, and the connecting irons are fixed on the transformer body through connecting screws penetrating through the sealing plates at the two ends and a transformer clamping piece; laminated wood boards are arranged between the connecting irons above and below the same side, the connecting irons are connected with the pressing irons, and the laminated wood boards are fixed between the pressing irons and the pressers through the pressing irons.
Preferably, the connection iron is provided with a stud penetrating through the compaction iron toward the compaction iron, and is fastened by a nut.
Preferably, a washer is further arranged between the nut and the pressing iron on the stud; the number of the nuts is two.
Preferably, the connection iron is an angle iron with a groove facing the transformer.
Preferably, any one of the connection irons is connected with two of the compact irons.
Preferably, the compact iron is an angle iron with a groove facing away from the transformer.
Preferably, the laminated wood board is provided with a groove extending along the width direction towards the transformer.
Preferably, the grooves have a depth of 5mm, the distance between adjacent grooves is 15mm, and the distance from the grooves at two ends to the end of the laminated wood board is 20 mm.
Preferably, the thickness of the laminated wood plate is 4.5 to 5mm greater than the distance from the outer edge of the transformer coil to the connection iron; the laminated wood board is as high as the transformer coil;
the height of the compact iron is equal to the distance from the upper edge of the transformer clamp positioned above to the lower edge of the transformer clamp positioned below.
The invention has the beneficial effects that: the transformer has a simple structure, can improve the short-circuit resistance of the existing transformer, can effectively weaken the transverse short-circuit force generated by the winding when the transformer is short-circuited, and enhances the sudden short-circuit resistance; for the transformer with larger capacity, the model specifications of the compact iron and the connecting iron are increased.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic top view of an embodiment of the present invention.
FIG. 3 is a schematic side view of an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, a transformer body structure for enhancing short-circuit resistance of a transformer comprises four connecting irons 6 installed in a width direction of the transformer, sealing plates 7 are welded at two ends of each connecting iron, and the connecting irons 6 are fixed on the transformer body through connecting screws 9 penetrating the sealing plates 7 at the two ends and transformer clamping pieces 10. Laminated wood boards 8 are arranged between the connecting irons 6 which are positioned above and below the same side, and the connecting irons 6 are connected with the pressing irons 1, so that the laminated wood boards 8 are fixed between the pressing irons 1 and the pressing device by the pressing irons 1. In this embodiment, the connection iron 6 is an angle iron with a groove facing the transformer, and the sealing plates 7 are welded on both sides of the angle iron, thereby enhancing the stability thereof. Any connecting iron 6 is connected with two compact irons 1, namely the connecting iron 6 positioned above and below the same side is connected and stabilized with the two compact irons 1 together. The height H1 of the nose bar 1 is equal to the distance from the upper edge of the upper transformer clamp 10 to the lower edge of the lower transformer clamp 10. In this embodiment, the compacted iron 1 is an angle iron with a groove facing away from the transformer, so that the compacted iron has excellent impact resistance and saves raw materials, and in other embodiments, the compacted iron 1 may be a channel steel with a groove facing away from the transformer. In this embodiment, the method for fixing the compact iron 1 by the connection iron 6 is as follows: the connection iron 6 is provided with a stud 5 penetrating the compacted iron 1 toward the compacted iron 1, and the end is fastened with a nut 3. And a washer 4 is arranged between the nut 3 and the pressing iron 1 on the stud 5, and the number of the nuts 3 is two. In this embodiment, one M12 thin nut and one M12 nut are provided as shown in fig. 1, respectively. The cooperation of washer 4 and nut 3 can make this application more firm, and it is stronger to prevent the short circuit ability.
The laminated wood board 8 is provided with a groove 13 extending along the width direction towards the transformer. The groove 13 supplies oil to flow, so that heat dissipation is guaranteed, local overheating is not formed, and product operation is not affected. In this embodiment, the depth of the grooves 13 is 5mm, the distance between adjacent grooves 13 is 15mm, and the distance from the grooves 13 at both ends to the end of the laminated wood board 8 is 20 mm. By the arrangement, the heat dissipation function of the groove 13 can be guaranteed, the laminated wood board 8 can keep stable performance, and large transverse short circuit force can be resisted. The thickness of the laminated wood board 8 is 4.5 to 5mm larger than the distance from the outer edge of the transformer coil 14 to the connecting iron 6, and in the present invention, the distance from the outer edge of the transformer coil 14 to the connecting iron 6 refers to the shortest distance between the horizontal projections of the transformer coil 14 and the connecting iron 6, and is equal to the height of the laminated wood board 8 and the transformer coil 14. The thickness of the laminated wood board 8 is set to be 4.5 to 5mm greater than its predetermined theoretical occupation thickness, which can achieve the effect of further locking the laminated wood board 8 and increasing its ability to resist lateral short-circuit forces.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A ware body structure of reinforcing transformer anti short circuit ability, characterized by: the transformer comprises four connecting irons (6) arranged in the width direction of the transformer, sealing plates (7) are welded at two ends of each connecting iron, and the connecting irons (6) are fixed on a transformer body through connecting screw rods (9) penetrating through the sealing plates (7) at the two ends and transformer clamping pieces (10); be located homonymy top and below be provided with laminated wood board (8) between connection iron (6), connection iron (6) all are connected with nose bar (1), nose bar (1) will laminated wood board (8) are fixed nose bar (1) with between the depressor.
2. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: the connecting iron (6) is provided with a stud (5) which penetrates through the pressing iron (1) towards the pressing iron (1) and is fastened by a nut (3).
3. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 2, wherein: a washer (4) is arranged between the nut (3) and the compact iron (1) on the stud (5); the number of the nuts (3) is two.
4. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: the connecting iron (6) is an angle iron with a groove facing the transformer.
5. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: any one of the connecting irons (6) is connected with two of the compact irons (1).
6. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: the compact iron (1) is an angle iron with a groove back to the transformer.
7. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: the laminated wood board (8) is provided with a groove (13) extending along the width direction towards the transformer.
8. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: the depth of the grooves (13) is 5mm, the distance between every two adjacent grooves (13) is 15mm, and the distance between the grooves (13) at two ends and the end part of the laminated wood board (8) is 20 mm.
9. The body structure for enhancing the short-circuit resistance of the transformer as claimed in claim 1, wherein: the thickness of the laminated wood board (8) is 4.5 to 5mm greater than the distance from the outer edge of the transformer coil (14) to the connection iron (6); the laminated wood board (8) is as high as the transformer coil (14);
the height (H1) of the compact iron (1) is equal to the distance from the upper edge of the transformer clamp (10) above to the lower edge of the transformer clamp (10) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935631.8A CN112002543A (en) | 2020-09-08 | 2020-09-08 | Transformer body structure for enhancing short-circuit resistance of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935631.8A CN112002543A (en) | 2020-09-08 | 2020-09-08 | Transformer body structure for enhancing short-circuit resistance of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112002543A true CN112002543A (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010935631.8A Pending CN112002543A (en) | 2020-09-08 | 2020-09-08 | Transformer body structure for enhancing short-circuit resistance of transformer |
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| CN (1) | CN112002543A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941334Y (en) * | 2006-04-03 | 2007-08-29 | 卧龙电气集团股份有限公司 | Body structure for railway high-voltage traction transformer |
| CN205122352U (en) * | 2015-11-21 | 2016-03-30 | 河南铜牛变压器有限公司 | It rolls up iron core transformer folder to be applicable to high strong type three -phase pentastyle opening |
| CN107134350A (en) * | 2017-07-05 | 2017-09-05 | 吴江变压器有限公司 | It is a kind of to strengthen the Amorphous Alloy Distribution Transformer winding construction of anti-short circuit capability |
| CN109148121A (en) * | 2018-10-25 | 2019-01-04 | 无锡市电力变压器有限公司 | Solve the problems, such as the fastening structure of amorphous alloy transformer resistance to shorting |
| CN109243788A (en) * | 2018-11-26 | 2019-01-18 | 山东电工电气集团智能电气有限公司 | Transformer body and transformer |
| CN208570306U (en) * | 2018-06-11 | 2019-03-01 | 山东迪米特电气有限公司 | Large capacity silicon steel transformer |
| CN212411815U (en) * | 2020-09-08 | 2021-01-26 | 重庆泰昇智能电气有限公司 | Transformer body structure for enhancing short-circuit resistance of transformer |
-
2020
- 2020-09-08 CN CN202010935631.8A patent/CN112002543A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941334Y (en) * | 2006-04-03 | 2007-08-29 | 卧龙电气集团股份有限公司 | Body structure for railway high-voltage traction transformer |
| CN205122352U (en) * | 2015-11-21 | 2016-03-30 | 河南铜牛变压器有限公司 | It rolls up iron core transformer folder to be applicable to high strong type three -phase pentastyle opening |
| CN107134350A (en) * | 2017-07-05 | 2017-09-05 | 吴江变压器有限公司 | It is a kind of to strengthen the Amorphous Alloy Distribution Transformer winding construction of anti-short circuit capability |
| CN208570306U (en) * | 2018-06-11 | 2019-03-01 | 山东迪米特电气有限公司 | Large capacity silicon steel transformer |
| CN109148121A (en) * | 2018-10-25 | 2019-01-04 | 无锡市电力变压器有限公司 | Solve the problems, such as the fastening structure of amorphous alloy transformer resistance to shorting |
| CN109243788A (en) * | 2018-11-26 | 2019-01-18 | 山东电工电气集团智能电气有限公司 | Transformer body and transformer |
| CN212411815U (en) * | 2020-09-08 | 2021-01-26 | 重庆泰昇智能电气有限公司 | Transformer body structure for enhancing short-circuit resistance of transformer |
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