CN202871505U - High voltage withstanding totally-enclosed isolation transformer - Google Patents
High voltage withstanding totally-enclosed isolation transformer Download PDFInfo
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- CN202871505U CN202871505U CN 201220347547 CN201220347547U CN202871505U CN 202871505 U CN202871505 U CN 202871505U CN 201220347547 CN201220347547 CN 201220347547 CN 201220347547 U CN201220347547 U CN 201220347547U CN 202871505 U CN202871505 U CN 202871505U
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- transformer
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- epoxy resin
- withstand voltage
- iron cores
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Abstract
The utility model discloses a high voltage withstanding totally-enclosed isolation transformer, which is characterized by comprising EI type iron cores 8, a skeleton drawing 1 in which a partition board is provided with an isolating groove, a shell 10 and epoxy resin 9, wherein a primary coil 5 and a secondary coil 6 are arranged in a primary slot 3 and a secondary slot 4 on two sides of a skeleton partition board of the transformer respectively; after being wound with a coil, the EI type iron cores 8 are inserted into the center of the skeleton drawing 1 from the transformer twice and are overlapped together in a staggered way till the EI type iron cores 8 are inserted in the whole center of the skeleton drawing 1 of the transformer; and the skeleton drawing 1 and the EI type iron cores 8 are placed inside the shell after being well assembled and are refilled with the epoxy resin 9. The transformer has the characteristics of small size and compact structure and the most outstanding characteristic of extremely high dielectric strength, and is particularly suitable for a control system with relatively high working voltage to play a role of voltage isolation.
Description
Technical field
The utility model relates to a kind of isolation and sends out transformer, particularly about a kind of high withstand voltage totally enclosed type isolating transformer.Belong to the power electronic equipment technical field.
Background technology
The high withstand voltage isolating transformer of producing in the world at present is problem of withstand voltage between the solution group, the general employing exported low power mode with the large volume transformer, be about to the elementary secondary when coiling of transformer, a coiling part, reserve greatly space infusion epoxy resin, reach 10,000 volts although the transformer that adopts this method coiling to produce is withstand voltage, it is bigger than normal that this transformer ubiquity volume, loosely organized shortcoming, what cause transformer will export certain power, and the volume of transformer can be than common transformer large 2～3 times.
The utility model content
The purpose of this utility model is to overcome existing methodical deficiency in the discussion and provides a kind of performance, all good high withstand voltage totally enclosed type isolating transformers of structure.Transformer is sent out in high withstand voltage totally enclosed type isolation, it is characterized in that: by EI type magnetic core 8, dividing plate is with the skeleton drawing 1 of isolated groove, and shell 10 and epoxy resin 9 consist of.Primary coil 5 and secondary coil 6 are respectively in the elementary groove 3 and secondary slot 4 of transformer framework dividing plate both sides, insert skeleton drawing 1 center twice with EI shaped iron core 8 from transformer behind the good coil of coiling, EI shaped iron core 8 is overlapping together, until EI shaped iron core 8 all sticks with transformer framework Fig. 1 center, the skeleton drawing 1, the EI shaped iron core 8 that assemble are put into shell, and pour into epoxy resin 9.It is little that this transformer has a volume, the characteristics of compact conformation, but its outstanding feature is that dielectric strength is high, especially is fit to use in the higher control system of operating voltage, plays the effect of voltage isolation.
Description of drawings
Fig. 1 is skeleton drawing
Fig. 2 is the skeleton of the good enamelled wire of coiling
Fig. 3 is the installation diagram of skeleton and magnetic core
Fig. 4 is the pulse transformer finished figure after encapsulating
Fig. 5 is the pulse transformer profile after encapsulating
Embodiment
Technical problem of the present utility model can solve by taking following measure:
Specify below in conjunction with accompanying drawing:
The utility model adopts unique isolated groove structure, solves problem of withstand voltage with a skeleton drawing 1 with isolated groove.Skeleton can adopt the PPO fire-resistant engineering plastics, and the primary and secondary coil then adopts common enamelled wire coiling, and primary coil has several thousand circles, and secondary coil has the hundreds of circle.
The skeleton of drawing in Fig. 1 is that the PPO fire-resistant engineering plastics is made, the above is with leading foot contact pin 7, they are to insert in the jack that makes in advance on the skeleton in friction tight mode, and primary coil 5 is flat in the elementary groove 3 of skeleton drawing 1 with the number of turns of determining, is connected with leading foot contact pin 7 again.Similar with secondary winding, secondary coil 6 also is to be wound in the secondary slot 4 of skeleton drawing 1 with the number of turn of determining, is connected with leading foot contact pin 7 again.
With EI shaped iron core 8, insert the center of skeleton drawing 1, these EI shaped iron core 8 materials are silicon steel sheet, with E sheet and the I sheet insertion skeleton that crosses one another, until that frame center's square hole all sticks with iron core is fully firm, as shown in Figure 3.The transformer that assembles shown in Figure 3 is packed in the shell 10, with epoxy resin 9 embeddings, make it to become a totally enclosed device, as shown in Figure 4.Dividing plate 2 on skeleton drawing 1 has a dark groove of 2 millimeters, epoxy resin 9 penetrates in the groove acting in conjunction by skeleton groove and epoxy resin 9 during embedding, make epoxy resin 9 form " an epoxy wall " 11 with boss at the primary and secondary of transformer, as shown in Figure 5, increased greatly the creepage distance between the transformer primary and secondary, made transformer have high dielectric voltage withstand grade.
The beneficial effects of the utility model are:
According to the utility model, adopt 2 designs of unique groove type dividing plate to make volume of transformer small and exquisite, good looking appearance, compact conformation, accurate positioning, manufacture craft is simple; All stay the mode in a lot of spaces to compare the transformer primary and secondary with existing the employing, manufacture craft is simpler, and power output is larger, and dielectric strength is higher.
As an example of the present utility model.Be summarized as follows: elementary with the QA-2 Φ 0.075 enamelled wire coiling number of turn 3500 circles, secondary two groups of 0.075 enamelled wire coiling, 106 circles with QA-1 Φ 0.31, adopting the magnetic core models such as accompanying drawing 2. is that the silicon steel sheet magnetic core of EI41/Z145-0.35 is good with skeleton and the iron core assembly of the good enamelled wire of coiling by accompanying drawing 3, in the shell of at last transformer that assembles being packed into.Use epoxy resin encapsulated, as shown in Figure 4.
The transformer technology parameter sees table one for details
Table one
| Input voltage | No-load current | Output voltage | Rated current | Floating voltage n | Dielectric strength |
| 220V | ≤ |
2*6V | 167mA | 6.6V | 〉=12KV/60 second |
Claims (4)
1. high withstand voltage totally enclosed type isolating transformer is characterized in that: by EI type magnetic core (8), dividing plate is with the skeleton of isolated groove, and shell (10) and epoxy resin (9) consist of.
2. the withstand voltage totally enclosed type isolating transformer of height according to claim 1, it is characterized in that: EI shaped iron core (8) material is silicon steel sheet.
3. the withstand voltage totally enclosed type isolating transformer of height according to claim 1, it is characterized in that: skeleton is that the PPO fire-resistant engineering plastics is made, and the above is with leading foot contact pin (7).
4. the withstand voltage totally enclosed type isolating transformer of height according to claim 1, it is characterized in that: the dividing plate on skeleton (2) has a dark groove of 2 millimeters, epoxy resin during embedding (9) penetrates in the groove by the acting in conjunction of skeleton groove and epoxy resin (9), makes epoxy resin (9) form one " epoxy wall " (11) with boss at the primary and secondary of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220347547 CN202871505U (en) | 2012-07-18 | 2012-07-18 | High voltage withstanding totally-enclosed isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220347547 CN202871505U (en) | 2012-07-18 | 2012-07-18 | High voltage withstanding totally-enclosed isolation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871505U true CN202871505U (en) | 2013-04-10 |
Family
ID=48038201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220347547 Expired - Lifetime CN202871505U (en) | 2012-07-18 | 2012-07-18 | High voltage withstanding totally-enclosed isolation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447653A (en) * | 2018-03-14 | 2018-08-24 | 珠海市新化磁性材料有限公司 | A kind of inductive transformer and preparation method thereof |
| WO2019010730A1 (en) * | 2017-07-13 | 2019-01-17 | 深圳市艾尔曼医疗电子仪器有限公司 | Insulated encapsulated transformer and high voltage winding bobbin thereof |
-
2012
- 2012-07-18 CN CN 201220347547 patent/CN202871505U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019010730A1 (en) * | 2017-07-13 | 2019-01-17 | 深圳市艾尔曼医疗电子仪器有限公司 | Insulated encapsulated transformer and high voltage winding bobbin thereof |
| CN108447653A (en) * | 2018-03-14 | 2018-08-24 | 珠海市新化磁性材料有限公司 | A kind of inductive transformer and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100015 No. 201, building 10, Jiuxianqiao North Road, Beijing, Chaoyang District, 303 Patentee after: BEIJING CHUANG SI FANG ELECTRONIC LIMITED BY SHARE LTD. Address before: 100015 No. 201, building 10, Jiuxianqiao North Road, Beijing, Chaoyang District, 303 Patentee before: BEIJING NEW CHUANG SI FANG ELECTRONIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100015 No. 201, building 10, Jiuxianqiao North Road, Beijing, Chaoyang District, 303 Patentee after: Beijing Chuang Sifang Electronic Group Co.,Ltd. Address before: 100015 No. 201, building 10, Jiuxianqiao North Road, Beijing, Chaoyang District, 303 Patentee before: BEIJING CHUANG SI FANG ELECTRONIC LIMITED BY SHARE Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
|
| CX01 | Expiry of patent term |