CN112951575A - Method for manufacturing body coil of voltage transformer - Google Patents
Method for manufacturing body coil of voltage transformer Download PDFInfo
- Publication number
- CN112951575A CN112951575A CN202110291690.0A CN202110291690A CN112951575A CN 112951575 A CN112951575 A CN 112951575A CN 202110291690 A CN202110291690 A CN 202110291690A CN 112951575 A CN112951575 A CN 112951575A
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- China
- Prior art keywords
- iron core
- voltage transformer
- coil
- rubber sleeve
- manufacturing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 24
- 239000004945 silicone rubber Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000005284 excitation Effects 0.000 abstract description 9
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 230000005415 magnetization Effects 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention discloses a method for manufacturing a coil of a body of a voltage transformer, which comprises the following steps: winding a secondary coil and a primary coil; sleeving the secondary coil and the primary coil on an iron core, and respectively arranging a piece of flexible insulating paper at the gap of the iron core notch; aligning and fastening the cut section of the iron core by using a steel belt; and the exposed part of the iron core is sealed, insulated, shielded and bound through a formed silicon rubber sleeve. According to the application, a piece of flexible insulating paper is clamped at each gap between two iron cores, so that the magnetic resistance is increased, the magnetization track of the iron core is changed, the voltage of the saturation point of the iron core is improved, and the voltage of the inflection point of a voltage transformer is further improved; the iron core is wrapped by adopting the formed silicone rubber sleeve to seal and buffer, resin is prevented from entering the iron core in a tight combination mode, great stress is generated on the iron core when epoxy resin is poured, the excitation characteristics of the voltage transformer are stable and consistent, and the purpose of safe operation of the voltage transformer is achieved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a method for manufacturing a coil of a body of a voltage transformer.
Background
At present, when a voltage transformer in the transformer industry operates, the voltage of an inflection point is always low, an iron core is easily saturated, and excitation characteristics are inconsistent, so that the operation safety of the voltage transformer is seriously influenced. With the continuous improvement of the technical requirements of national network companies on products, the design level of the mutual inductor is also continuously improved.
The existing method for improving the inflection point voltage is generally limited to increasing the number of secondary turns to reduce the magnetic induction intensity, but increasing the number of secondary turns tends to increase the cost, the secondary capacity is not large, the improved voltage amplitude is limited, the problem of improving the inflection point voltage is not solved fundamentally, in addition, the method for improving the excitation characteristic consistency is also limited to keeping the consistency of the same group of used products, the consistency of the same batch of products is ensured, the product quantity is increased, and the manufacturing cost of enterprises is increased invisibly. Therefore, a more complete and advanced method for increasing the knee point voltage and simultaneously improving the excitation characteristic consistency is urgently needed, so that the design and manufacturing level of the voltage transformer is further improved.
Disclosure of Invention
The invention aims to provide a method for manufacturing a coil of a body of a voltage transformer, which aims to solve the problems of low inflection point voltage and inconsistent excitation characteristics of the conventional voltage transformer, does not increase the number of secondary turns, does not increase the number of products and reduces the production cost.
In order to achieve the purpose, the technical scheme of the application is as follows: a method for manufacturing a coil of a body of a voltage transformer comprises the following steps:
winding a secondary coil and a primary coil;
sleeving the secondary coil and the primary coil on an iron core, and respectively arranging a piece of flexible insulating paper at the gap of the iron core notch;
aligning and fastening the cut section of the iron core by using a steel belt;
and the exposed part of the iron core is sealed, insulated, shielded and bound through a formed silicon rubber sleeve.
Furthermore, the thickness of the flexible insulating paper is 0.015-0.1mm, and the size of the flexible insulating paper is slightly larger than the section of the iron core.
Furthermore, the outside of the formed silicone rubber sleeve is smooth, and the inner cavity of the formed silicone rubber sleeve is in a step shape and is matched with the shape of the iron core.
Furthermore, the molded silicone rubber sleeve is L-shaped, is formed by vulcanizing disposable silicone rubber, and is symmetrically arranged on the iron core.
Furthermore, the iron core is formed by butting two C-shaped iron cores.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects:
1. low cost, simple and convenient operation, simple and easy implementation: the number of secondary turns is not increased, and the cost is reduced; the gap between the two iron cores is respectively clamped with a piece of flexible insulating paper, the iron cores are wrapped by adopting the formed silicon rubber sleeve in a buffering way, and the whole process scheme is simple and convenient to operate and is simple and feasible.
2. The voltage transformer has stable and consistent excitation characteristics and is easy to match: the iron core is wrapped by adopting the formed silicone rubber sleeve to seal and buffer, resin is prevented from entering the iron core, great stress is not generated on the iron core when epoxy resin is poured, the excitation characteristics of the voltage transformer are stable and consistent, the same group is easy to be consistent, the same batch is also easy to be consistent, and the manufacturing cost is reduced.
3. The voltage transformer has high inflection point voltage and safe operation: the flexible insulating paper is clamped at the gap between the two iron cores, so that the magnetic resistance is increased, the magnetization track of the iron cores is changed, the voltage of the saturation point of the iron cores is improved, the voltage of the inflection point of the voltage transformer is further improved, and the aim of safely operating the voltage transformer is fulfilled.
Drawings
FIG. 1 is a front view of a coil part of a voltage transformer body;
FIG. 2 is a side view of a coil part of a voltage transformer body;
fig. 3 is a three-view of the structure of the molded silicone rubber sleeve.
The sequence numbers in the figures illustrate: 1. a primary line; 2. a secondary line; 3. an iron core; 4. flexible insulating paper; 5. and (5) forming the silicone rubber sleeve.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The embodiment provides a method for manufacturing a coil of a voltage transformer body, wherein a piece of flexible insulating paper is clamped at each of two gaps of a notch during the assembly of a C-shaped iron core, the magnetic resistance is increased, the magnetization track of the iron core is changed, the voltage of the saturation point of the iron core is improved, the requirement of improving the voltage of an inflection point is met, meanwhile, the iron core is wrapped in a sealing and buffering mode through a formed silicon rubber sleeve, the formed silicon rubber sleeve is tightly combined with the iron core, resin feeding is avoided, great stress cannot be generated on the iron core during epoxy resin pouring, and the excitation characteristics of. The invention relates to a production and manufacturing process of a coil of a voltage transformer body, which is a binding procedure of the voltage transformer body; the method comprises the following specific steps:
the method comprises the following steps: winding a secondary coil and a primary coil;
step two: sleeving the secondary coil and the primary coil on an iron core, and respectively arranging a piece of flexible insulating paper at the gap of the iron core notch; the thickness of the flexible insulating paper is 0.015-0.1mm, the preferable thickness is 0.05mm, and the size of the flexible insulating paper is slightly larger than the section of the iron core;
step three: aligning and fastening the cut section of the iron core by using a steel belt;
step four: the exposed part of the iron core is sealed, insulated, shielded and bound through two symmetrical formed silicon rubber sleeves. The inner cavity of the formed silicone rubber sleeve is stepped and matched with the shape of the iron core, the outer part of the formed silicone rubber sleeve is smooth and smooth, the formed silicone rubber sleeve is L-shaped integrally and is formed by vulcanizing disposable silicone rubber.
The manufacturing method of the coil of the body of the voltage transformer is a novel process scheme designed according to the production principle of the transformer and related standards, the electromagnetic induction principle is fully considered, a piece of flexible insulating paper is clamped between two gaps of an iron core, the magnetic resistance of the iron core is increased, the magnetization track of the iron core is changed, the voltage of the saturation point of the iron core is improved, and the voltage of the inflection point of a product is further improved; the iron core is wrapped by adopting the formed silicone rubber sleeve to seal and buffer, resin is prevented from entering the iron core, great stress is not generated on the iron core when epoxy resin is poured, the excitation characteristics of the voltage transformer are stable and consistent, the safe operation of a product is ensured, and favorable guarantee is provided for batch manufacturing and quality control of the voltage transformer.
The embodiments of the present invention are illustrative, but not restrictive, of the invention in any manner. The technical features or combinations of technical features described in the embodiments of the present invention should not be considered as being isolated, and they may be combined with each other to achieve a better technical effect. The scope of the preferred embodiments of the present invention may also include additional implementations, and should be understood by those skilled in the art to which the embodiments of the present invention pertain.
Claims (5)
1. A method for manufacturing a coil of a body of a voltage transformer is characterized by comprising the following steps:
winding a secondary coil and a primary coil;
sleeving the secondary coil and the primary coil on an iron core, and respectively arranging a piece of flexible insulating paper at the gap of the iron core notch;
aligning and fastening the cut section of the iron core by using a steel belt;
and the exposed part of the iron core is sealed, insulated, shielded and bound through a formed silicon rubber sleeve.
2. The method for manufacturing the coil of the body of the voltage transformer according to claim 1, wherein the thickness of the flexible insulating paper is 0.015-0.1mm, and the size of the flexible insulating paper is slightly larger than the section of the iron core.
3. The method for manufacturing the coil of the body of the voltage transformer according to claim 1, wherein the molded silicone rubber sleeve is smooth and smooth on the outside, and the inner cavity of the molded silicone rubber sleeve is step-shaped and matched with the shape of the iron core.
4. The method for manufacturing the coil of the body of the voltage transformer as claimed in claim 1, wherein the molded silicone rubber sleeve is L-shaped, is vulcanized by disposable silicone rubber, and is symmetrically arranged on the iron core.
5. The method for manufacturing a coil of a body of a voltage transformer as claimed in claim 1, wherein said iron core is formed by butt-jointing two C-shaped iron cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291690.0A CN112951575A (en) | 2021-03-18 | 2021-03-18 | Method for manufacturing body coil of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291690.0A CN112951575A (en) | 2021-03-18 | 2021-03-18 | Method for manufacturing body coil of voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112951575A true CN112951575A (en) | 2021-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110291690.0A Pending CN112951575A (en) | 2021-03-18 | 2021-03-18 | Method for manufacturing body coil of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112951575A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990626A (en) * | 2021-11-18 | 2022-01-28 | 福建省电力有限公司泉州电力技能研究院 | Anti-resonance voltage transformer and manufacturing method thereof |
| CN119092281A (en) * | 2024-11-11 | 2024-12-06 | 大连北方互感器集团有限公司 | Body coil structure suitable for automatic pressure gel voltage transformer and manufacturing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315220Y (en) * | 2008-11-20 | 2009-09-23 | 平高集团有限公司 | TPY-level transient current mutual inductor coil |
| CN201590322U (en) * | 2009-10-28 | 2010-09-22 | 大连中广互感器制造有限公司 | Anti-foul voltage transformer with small partial discharge |
| CN102709026A (en) * | 2012-02-01 | 2012-10-03 | 鸿康磁业电子（昆山）有限公司 | Improved inductor |
| CN203277074U (en) * | 2013-04-07 | 2013-11-06 | 北京铁道工程机电技术研究所有限公司 | Voltage transformer |
| CN203895256U (en) * | 2014-06-26 | 2014-10-22 | 山东泰开电力电器有限公司 | Novel cast current transformer iron core buffer device |
| CN207397920U (en) * | 2017-11-02 | 2018-05-22 | 东莞健捷电子有限公司 | An inductance for high-power AC charging pile |
| CN209607542U (en) * | 2019-04-30 | 2019-11-08 | 何排枝 | A silicon rubber insulated voltage transformer |
| CN110808142A (en) * | 2019-04-30 | 2020-02-18 | 何排枝 | Silicon rubber insulated voltage transformer |
-
2021
- 2021-03-18 CN CN202110291690.0A patent/CN112951575A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315220Y (en) * | 2008-11-20 | 2009-09-23 | 平高集团有限公司 | TPY-level transient current mutual inductor coil |
| CN201590322U (en) * | 2009-10-28 | 2010-09-22 | 大连中广互感器制造有限公司 | Anti-foul voltage transformer with small partial discharge |
| CN102709026A (en) * | 2012-02-01 | 2012-10-03 | 鸿康磁业电子（昆山）有限公司 | Improved inductor |
| CN203277074U (en) * | 2013-04-07 | 2013-11-06 | 北京铁道工程机电技术研究所有限公司 | Voltage transformer |
| CN203895256U (en) * | 2014-06-26 | 2014-10-22 | 山东泰开电力电器有限公司 | Novel cast current transformer iron core buffer device |
| CN207397920U (en) * | 2017-11-02 | 2018-05-22 | 东莞健捷电子有限公司 | An inductance for high-power AC charging pile |
| CN209607542U (en) * | 2019-04-30 | 2019-11-08 | 何排枝 | A silicon rubber insulated voltage transformer |
| CN110808142A (en) * | 2019-04-30 | 2020-02-18 | 何排枝 | Silicon rubber insulated voltage transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990626A (en) * | 2021-11-18 | 2022-01-28 | 福建省电力有限公司泉州电力技能研究院 | Anti-resonance voltage transformer and manufacturing method thereof |
| CN119092281A (en) * | 2024-11-11 | 2024-12-06 | 大连北方互感器集团有限公司 | Body coil structure suitable for automatic pressure gel voltage transformer and manufacturing method |
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Application publication date: 20210611 |
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| RJ01 | Rejection of invention patent application after publication |