CN107545998B - Isolation transformer - Google Patents
Isolation transformer Download PDFInfo
- Publication number
- CN107545998B CN107545998B CN201711025323.6A CN201711025323A CN107545998B CN 107545998 B CN107545998 B CN 107545998B CN 201711025323 A CN201711025323 A CN 201711025323A CN 107545998 B CN107545998 B CN 107545998B
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- CN
- China
- Prior art keywords
- silicone rubber
- rubber sleeve
- oil tank
- shielding electrode
- storage cabinet
- Prior art date
- 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.)
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- 238000002955 isolation Methods 0.000 title claims abstract description 21
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 20
- 239000004945 silicone rubber Substances 0.000 claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 20
- 239000003990 capacitor Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of transformers, and particularly discloses an isolation transformer which comprises an expander, an oil storage cabinet, a silicone rubber sleeve, an oil tank and a body, wherein the bottom of the expander is connected with the top of the oil storage cabinet, the bottom of the oil storage cabinet is connected with the top of the silicone rubber sleeve, the bottom of the silicone rubber sleeve is connected with the oil tank, the body is arranged in the silicone rubber sleeve and the oil tank, the body comprises a capacitive screen sleeve, a high-voltage coil, a shielding electrode and insulating paper, the capacitive screen sleeve is connected with the shielding electrode, the high-voltage coil is arranged in the shielding electrode, and the insulating paper is coated on the outer sides of the capacitive screen sleeve and the shielding electrode. The isolating transformer has high voltage tolerance, uniform electric field and strong capability of shielding interference signals, and adopts an arrangement mode that high-voltage coils are arranged outside the inner low-voltage coils, so that the whole volume of the transformer is small, the heat dissipation performance is good, and the iron core in the oil tank can be installed by adopting a horizontal structure in order to facilitate the transportation of the transformer.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an isolation transformer.
Background
The isolation transformer is used for electrically isolating the input winding from the output winding, and is used for avoiding accidental contact with the charged body at the same time, and the isolation of the transformer is used for isolating the current of each winding coil of the primary side and the secondary side.
The main functions of the isolation transformer are as follows: the primary side is completely electrically isolated from the secondary side and the circuit is isolated. In addition, the characteristic of large high-frequency loss of the iron core is utilized, so that high-frequency clutter is prevented from being transmitted into the control loop. The secondary ground is suspended by the isolation transformer, and the isolation transformer can only be used in the occasions with smaller power supply range and shorter circuit. At this time, the capacitance current to ground of the system is small enough to cause injury to the human body. It is also important to protect personnel and isolate dangerous voltages. In the prior art, most of isolation transformers are large in size, and the isolation transformers are high in pressure resistance and capable of effectively inhibiting various interferences while reducing the whole size.
Disclosure of Invention
The invention aims to solve the technical problem of providing an isolation transformer, aiming at the defects in the prior art, wherein a shielding electrode is arranged between a high-voltage coil and a low-voltage coil to play a role in homogenizing an electric field and shielding interference signals.
In order to solve the technical problems, the invention provides an isolation transformer which comprises an expander, an oil storage cabinet, a silicone rubber sleeve, an oil tank and a body, wherein the bottom of the expander is connected with the top of the oil storage cabinet, the bottom of the oil storage cabinet is connected with the top of the silicone rubber sleeve, the bottom of the silicone rubber sleeve is connected with the oil tank, the body is arranged in the silicone rubber sleeve and the oil tank, an iron core is arranged in the oil tank, the body is arranged in the iron core, the body comprises a capacitor screen sleeve, a high-voltage coil, a shielding electrode and insulating paper, the capacitor screen sleeve is connected with the shielding electrode, the high-voltage coil is arranged in the shielding electrode, and the insulating paper is coated on the outer sides of the capacitor screen sleeve and the shielding electrode.
Further, a low-voltage coil is wound on the iron core, and the low-voltage coil is arranged on the outer side of the insulating paper.
Further, the insulating paper comprises semiconductive crepe paper, reinforced cable paper, cable crepe paper and aluminum cable paper which are coated from inside to outside in sequence.
Specifically, be equipped with on the oil conservator and once binding post, high-voltage coil with once binding post is connected.
Further, the silicone rubber sleeve is a composite insulator.
Further, the core may be provided in a vertical structure or a horizontal structure.
The beneficial effects of the invention are as follows: the isolation transformer is manufactured by adopting the structural improvement of the current transformer, so that the isolation transformer has high voltage tolerance, uniform electric field and strong capability of shielding interference signals, and the high-voltage coils and the low-voltage coils are arranged outside, so that the whole volume of the transformer is small, the heat dissipation performance is good, and the iron core in the oil tank can be installed by adopting a horizontal structure in order to facilitate the transportation of the transformer.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an isolation transformer according to the present invention.
In the figure: the high-voltage transformer comprises a 1-expander, a 2-oil storage cabinet, a 3-silicone rubber sleeve, a 4-oil tank, a 5-body, a 51-capacitor screen sleeve, a 52-high-voltage coil, a 53-shielding electrode, 54-insulating paper, a 6-iron core, a 61-low-voltage coil and 7-primary wiring terminals.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the embodiment of the present invention, as shown in fig. 1, the present invention specifically discloses an isolation transformer, which comprises an expander 1, an oil storage cabinet 2, a silicone rubber sleeve 3, an oil tank 4 and a body 5,
the bottom of the expander 1 is connected with the top of the oil storage cabinet 2, the bottom of the oil storage cabinet 2 is connected with the top of the silicone rubber sleeve 3, the bottom of the silicone rubber sleeve 3 is connected with the oil tank 4, the body 5 is arranged in the silicone rubber sleeve 3 and the oil tank 4, the oil tank 4 is internally provided with an iron core 6, the body 5 is arranged in the iron core 6,
the body 5 comprises a capacitive screen sleeve 51, a high-voltage coil 52, a shielding electrode 53 and insulating paper 54, the capacitive screen sleeve 51 is connected with the shielding electrode 53, the high-voltage coil 52 is arranged in the shielding electrode 53, and the insulating paper 54 is coated on the outer sides of the capacitive screen sleeve 51 and the shielding electrode 53; the insulating paper 54 is fixed by an adhesive tape, and the insulating paper 54 comprises semiconductive crepe paper, reinforced cable paper, cable crepe paper and aluminum cable paper which are sequentially coated from inside to outside.
The iron core 6 is wound with a low-voltage coil 61, and the low-voltage coil 61 is arranged on the outer side of the insulating paper 54 and is connected with an outlet box for measurement;
specifically, the oil storage cabinet 2 is provided with a primary wiring terminal 7, and the high-voltage coil 52 is connected with the primary wiring terminal 7.
In the preferred mode of the invention, the silicon rubber sleeve 3 is a composite insulator, and the composite insulator has small volume and is convenient to maintain; the weight is light, and the installation is convenient; the mechanical strength is high, and the crushing is not easy; excellent shock resistance and good stain resistance; the production period is fast, and the quality stability is high.
The iron core 6 can be in a vertical structure or a horizontal structure, so that the whole volume of the transformer is reduced, the heat dissipation performance is better, and the transportation of the isolation transformer is more convenient when the iron core is in the horizontal structure.
The beneficial effects of the invention are as follows: the isolation transformer is manufactured by adopting the structural improvement of the current transformer, so that the isolation transformer has high voltage tolerance, uniform electric field and strong capability of shielding interference signals, and the high-voltage coils and the low-voltage coils are arranged outside, so that the whole volume of the transformer is small, the heat dissipation performance is good, and the iron core in the oil tank can be installed by adopting a horizontal structure in order to facilitate the transportation of the transformer.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (1)
1. The utility model provides an isolation transformer, its characterized in that includes expander (1), oil storage cabinet (2), silicone rubber sleeve (3), oil tank (4) and body (5), the bottom of expander (1) with the top of oil storage cabinet (2) is connected, the bottom of oil storage cabinet (2) with the top of silicone rubber sleeve (3) is connected, the bottom of silicone rubber sleeve (3) with oil tank (4) is connected, silicone rubber sleeve (3) are composite insulator, body (5) set up in silicone rubber sleeve (3) and oil tank (4), be equipped with iron core (6) in oil tank (4), iron core (6) are vertical structure or horizontal structure, body (5) set up in iron core (6);
the body (5) comprises a capacitive screen sleeve (51), a high-voltage coil (52), a shielding electrode (53) and insulating paper (54), the capacitive screen sleeve (51) is connected with the shielding electrode (53), the high-voltage coil (52) is arranged in the shielding electrode (53), the insulating paper (54) is coated on the outer sides of the capacitive screen sleeve (51) and the shielding electrode (53), and the insulating paper (54) comprises semiconductive crepe paper, reinforced cable paper, cable crepe paper and aluminum cable paper which are sequentially coated from inside to outside;
the iron core (6) is wound with a low-voltage coil (61), and the low-voltage coil (61) is arranged on the outer side of the insulating paper (54);
the oil storage cabinet (2) is provided with a primary wiring terminal (7), and the high-voltage coil (52) is connected with the primary wiring terminal (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025323.6A CN107545998B (en) | 2017-10-27 | 2017-10-27 | Isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025323.6A CN107545998B (en) | 2017-10-27 | 2017-10-27 | Isolation transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107545998A CN107545998A (en) | 2018-01-05 |
| CN107545998B true CN107545998B (en) | 2024-02-23 |
Family
ID=60967578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711025323.6A Active CN107545998B (en) | 2017-10-27 | 2017-10-27 | Isolation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107545998B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110580999A (en) * | 2018-06-08 | 2019-12-17 | 江苏思源赫兹互感器有限公司 | 500KV DC energy supply transformer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538856U (en) * | 1991-10-18 | 1993-05-25 | 日新電機株式会社 | Current transformer for instruments |
| JPH11135335A (en) * | 1997-10-29 | 1999-05-21 | Nichicon Corp | Insulating transformer |
| RU18014U1 (en) * | 2000-10-30 | 2001-05-10 | Открытое акционерное общество "Свердловский завод трансформаторов тока" | SEPARATING HIGH VOLTAGE TRANSFORMER |
| RU70046U1 (en) * | 2007-09-18 | 2008-01-10 | Общество с ограниченной ответственностью "ЭнергоЗащитные Системы" | DIVIDING TRANSFORMER WITH LOAD, TEMPERATURE AND INSULATION CURRENT CONTROL DEVICE |
| CN203617118U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | Oil-immersed inverted current transformer |
| CN204011015U (en) * | 2014-06-16 | 2014-12-10 | 中山市泰峰电气有限公司 | A kind of electric railway isolating transformer |
| WO2015090119A1 (en) * | 2013-12-17 | 2015-06-25 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
| CN106449057A (en) * | 2016-11-28 | 2017-02-22 | 苏州康开电气有限公司 | Power frequency isolation transformer for direct current breaker energy supply system |
| CN207558550U (en) * | 2017-10-27 | 2018-06-29 | 江苏思源赫兹互感器有限公司 | A kind of isolating transformer |
-
2017
- 2017-10-27 CN CN201711025323.6A patent/CN107545998B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538856U (en) * | 1991-10-18 | 1993-05-25 | 日新電機株式会社 | Current transformer for instruments |
| JPH11135335A (en) * | 1997-10-29 | 1999-05-21 | Nichicon Corp | Insulating transformer |
| RU18014U1 (en) * | 2000-10-30 | 2001-05-10 | Открытое акционерное общество "Свердловский завод трансформаторов тока" | SEPARATING HIGH VOLTAGE TRANSFORMER |
| RU70046U1 (en) * | 2007-09-18 | 2008-01-10 | Общество с ограниченной ответственностью "ЭнергоЗащитные Системы" | DIVIDING TRANSFORMER WITH LOAD, TEMPERATURE AND INSULATION CURRENT CONTROL DEVICE |
| WO2015090119A1 (en) * | 2013-12-17 | 2015-06-25 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
| CN203617118U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | Oil-immersed inverted current transformer |
| CN204011015U (en) * | 2014-06-16 | 2014-12-10 | 中山市泰峰电气有限公司 | A kind of electric railway isolating transformer |
| CN106449057A (en) * | 2016-11-28 | 2017-02-22 | 苏州康开电气有限公司 | Power frequency isolation transformer for direct current breaker energy supply system |
| CN207558550U (en) * | 2017-10-27 | 2018-06-29 | 江苏思源赫兹互感器有限公司 | A kind of isolating transformer |
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| Publication number | Publication date |
|---|---|
| CN107545998A (en) | 2018-01-05 |
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