CN203706834U - Explosion-proof isolation transformer - Google Patents
Explosion-proof isolation transformer Download PDFInfo
- Publication number
- CN203706834U CN203706834U CN201320875765.0U CN201320875765U CN203706834U CN 203706834 U CN203706834 U CN 203706834U CN 201320875765 U CN201320875765 U CN 201320875765U CN 203706834 U CN203706834 U CN 203706834U
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- Prior art keywords
- winding
- toroidal conductor
- circuit board
- explosion
- printed circuit
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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.)
- Expired - Lifetime
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- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 130
- 239000007787 solid Substances 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims description 69
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation 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
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model provides an explosion-proof isolation transformer which comprises a framework and multiple windings, wherein the framework comprises a printed circuit board; the multiple windings are annular wires on the printed circuit board, preferably, the multiple windings are formed by the annular wires at different layers of the printed circuit board, and solid isolation media are arranged among circuit layers at which the windings are positioned, so that reliable voltage isolation and solid isolation can be ensured.
Description
Technical field
The utility model relates to transformer technology field, particularly relates to a kind of explosion-proof isolating transformer.
Background technology
Transformer is the more common a kind of device for the AC signal that is coupled in electric and signal switch technology, it is upper as winding that traditional signal transformer is wound on magnetic core (or skeleton) by enamelled wire conventionally, so not only consistency poor (between the every circle of enamelled wire, relative position can not be consistent), leakage inductance lossy is high, isolation performance poor (only depending on the insulation enamelled coating isolation of line), and realize solid between winding and isolate difficult (conventionally by insulating tape or insulating plastics material), often volume is very large, weak heat-dissipating, processing inconvenience, be unfavorable for the batch production of automation.
Intrinsic Safety Explosive-proof Technology, as a kind of important explosion-proof technology, is unique a kind of explosion-proof technology that can be used for 0th district.In the application of intrinsic safe explosion-proof isolation technology, conventionally all adopt magnetic isolation method (transformer), and certification of explosion protection all there is very high requirement for isolation voltage, the isolation structure of transformer.In order to realize the isolation voltage of certification of explosion protection requirement, traditional transformer adopts insulating tape or insulating plastics material conventionally, often volume is very large, and in winding process, easily damage the insulating varnish of enamelled wire, voltage isolation capabilities can not be guaranteed (conventionally screening by inspection), and consistency is poor.
Summary of the invention
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of explosion-proof isolating transformer, and solving above-mentioned traditional transformer voltage isolation capabilities of the prior art cannot guaranteed technical problem.
For realizing above-mentioned target and other related objectives, the utility model provides a kind of explosion-proof isolating transformer, comprising: skeleton and multiple winding; Described skeleton comprises printed circuit board (PCB); Described multiple winding is the toroidal conductor on described printed circuit board (PCB).
Preferably, described multiple winding comprises the first winding and the second winding, described printed circuit board (PCB) has multilayer, described the first winding be on described printed circuit board (PCB) wherein the electrical connection of the toroidal conductor of one deck or the toroidal conductor of multilayer form, described the second winding is be electrically connected formation at the toroidal conductor of wherein one deck with layer or the toroidal conductor of multilayer with the toroidal conductor of the first winding on described printed circuit board (PCB).
Preferably, the middle part of described skeleton is provided with for the jack of insertion magnetic core the both sides extension from described jack to different directions and forms respectively end, described two ends are respectively equipped with the first pad group of described the first winding of electrical connection and are electrically connected the second pad group of described the second winding, wherein, between described the first pad group and the second pad group, keep default safe distance.
Preferably, described printed circuit board (PCB) is at least provided with solid spacer medium between the toroidal conductor place layer of the first winding and the toroidal conductor place layer of the second winding.
Preferably, described multiple windings also comprise the tertiary winding, and the described tertiary winding is not to be electrically connected formation at the toroidal conductor of wherein one deck with layer or the toroidal conductor of multilayer with the toroidal conductor of the first winding and the second winding on described printed circuit board (PCB).
Preferably, described skeleton is provided with for the jack of insertion magnetic core the three sides extensions from described jack to different directions and forms respectively end, described three ends be respectively equipped with described the first winding of electrical connection the first pad group, be electrically connected the second pad group of described the second winding and be electrically connected the 3rd pad group of the described tertiary winding, between described the first pad group, the second pad group and the 3rd pad group, keep default safe distance.
Preferably, described printed circuit board (PCB) is at least provided with solid spacer medium between the toroidal conductor place layer of the toroidal conductor place of the first winding layer, the second winding and the toroidal conductor place layer of the tertiary winding.
Preferably, described jack plugs cylindricality magnetic core, between each described winding, carries out magnetic coupling by described cylindricality magnetic core.
Preferably, described solid spacer medium thickness >=1.0mm, isolation voltage >=alternating voltage 4000V.
Preferably, the thickness >=35um of described toroidal conductor, width >=0.12mm, creepage trace index >=175.
As mentioned above, the explosion-proof isolating transformer of one that the utility model provides, comprising: skeleton and multiple winding; Described skeleton comprises printed circuit board (PCB); Described multiple winding is the toroidal conductor on described printed circuit board (PCB), preferably, described multiple winding is to form at the toroidal conductor of the different layers of described printed circuit board (PCB), and is provided with solid spacer medium between each winding place circuit layer, thereby ensures reliable voltage isolation and solid isolation.
Brief description of the drawings
Fig. 1 is shown as the structural representation of the first embodiment of explosion-proof isolating transformer of the present utility model.
Fig. 2 is shown as the structural representation of the printed circuit board (PCB) of the first embodiment of explosion-proof isolating transformer of the present utility model.
Fig. 3 is shown as the structural representation of the second embodiment of explosion-proof isolating transformer of the present utility model.
Fig. 4 is shown as the structural representation of the printed circuit board (PCB) of the second embodiment of explosion-proof isolating transformer of the present utility model.
Element numbers explanation
1,2 printed circuit board (PCB)
10,20 jacks
11,12,13,14,15,16, pad
21,22,23,24,25,26,27,28
17,29 cupric central layers not
170,290 solid spacer mediums
Embodiment
By specific instantiation, execution mode of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.The utility model can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
The first embodiment:
As shown in Figure 1, the utility model provides a kind of explosion-proof isolating transformer, described explosion-proof isolating transformer comprises skeleton and multiple winding, and one of improvement of the present utility model is that described skeleton comprises printed circuit board (PCB) 1, and described multiple winding is the toroidal conductor on described printed circuit board (PCB) 1.
In the present embodiment, described multiple windings comprise the first winding and the second winding, for example, can comprise: former limit winding and secondary winding, described printed circuit board (PCB) 1 has multilayer (for example polylith double sided board pressing is made), described the first winding be on described printed circuit board (PCB) 1 wherein the electrical connection of the toroidal conductor of one deck or the toroidal conductor of multilayer form, described the second winding is not to be electrically connected formation at the toroidal conductor of wherein one deck with layer or the toroidal conductor of multilayer with the toroidal conductor of the first winding on described printed circuit board (PCB) 1, that is to say, the described tertiary winding can be the toroidal conductor on individual layer in the circuit layer beyond the first winding and the second winding, or toroidal conductor in multilayer is connected to form, this connection can be that via hole connects.
In the present embodiment, the middle part of the skeleton of described explosion-proof isolating transformer is provided with for the jack 10 of insertion magnetic core the both sides extension from described jack 10 to different directions and forms respectively end, described jack 10 can plug for example cylindricality magnetic core, between each described winding (the first winding and the second winding), carries out magnetic coupling by described cylindricality magnetic core; And, described two ends are respectively equipped with the first pad group of described the first winding of electrical connection and are electrically connected the second pad group of described the second winding, wherein, between described the first pad group and the second pad group, keep default safe distance, described default safe distance is 3.3mm, be more than or equal to this default safe distance and meet minimum requirements, certainly preferably described both sides are both directions contrary on straight line, distance maximum between two ends that form so, can avoid phase mutual interference.
For instance, shown in Fig. 1 and Fig. 2, described the first pad group comprises that diagram is numbered 11,12 and 13 pad, respectively the toroidal conductor in tri-layers of GTL (being circuit board 1 top layer), L2 and L3 in printed circuit board (PCB) 1 in corresponding diagram 2, that is to say that the first winding comprises this toroidal conductor of three layers; Described the second pad group comprises that diagram is numbered 14,15 and 16 pad, toroidal conductor in three layers of L4, L5 in corresponding circuits plate 1, GBL (being circuit board 1 bottom), that is to say that the second winding comprises this toroidal conductor of three layers, wherein pad 13 and pad 16 are Same Name of Ends.
Certainly it should be noted that, described Fig. 1 is only for illustrating, and in actual demand situation, the position of the first winding and the second winding can exchange, and between each pad group, also can exchange, and is not limited with this embodiment.
As shown in Figure 2, multiple circuit layers (GTL layer is to GBL layer) of described printed circuit board (PCB) 1 can be integrated on different not cupric central layers 17, its material be for example described solid spacer medium 170 same dielectric material and on, lower surface is laid described circuit layer, described printed circuit board (PCB) 1 is at least provided with solid spacer medium 170 between the toroidal conductor place layer of the first winding and the toroidal conductor place layer of the second winding, want >=1.0mm of thickness, for example want >=1.0mm of the spacer medium thickness between L3 layer and L4 layer (being loaded with respectively the toroidal conductor of the first winding and the second winding) in figure, be for example 1.1mm, for example, and that distance between the toroidal conductor place circuit layer of same winding (the first winding or the second winding coexist) does not just need is so large, for example, solid spacer medium 170 between GTL layer and L2 layer is thick is 0.72mm, solid spacer medium 170 between GBL layer and L5 layer is thick is 0.72mm, described solid spacer medium 170 isolation voltages >=alternating voltage 4000V, preferred, described solid spacer medium 170 materials are FR-4 glass fiber material.
Preferably, described toroidal conductor is Copper Foil institute wire and forms, thickness >=35um, width >=0.12mm, creepage trace index (CTI) >=175, wherein, described is not 0.27mm containing the thickness of logical central layer, the not copper thickness 0.055mm of circuit layer on cupric central layer 17, this,, only for illustrating, is not limited with the present embodiment certainly.
It should be noted that above-mentioned layer all refers to circuit layer.
The second embodiment:
As shown in Figure 3, the difference of the second embodiment and the first embodiment is mainly: described multiple windings also comprise the tertiary winding, for example can comprise: former limit winding, secondary winding and the tertiary winding, certainly along with development in science and technology demand, also can have further winding quantity increases, but not is limited with the present embodiment.
In the present embodiment, the described tertiary winding is that described printed circuit board (PCB) 2 (for example polylith double sided board pressing is made) is not above electrically connected formation at the toroidal conductor of wherein one deck with layer or the toroidal conductor of multilayer with the toroidal conductor of the first winding and the second winding, that is to say, the described tertiary winding can be the toroidal conductor on individual layer in the circuit layer beyond the first winding and the second winding, or toroidal conductor in multilayer is connected to form, this connection can be that via hole connects; Corresponding, as shown in Figure 4, owing to having increased the tertiary winding, the number of plies of printed circuit board (PCB) 2 also can increase so.
In the present embodiment, described skeleton is provided with for inserting the jack 20 of magnetic core three sides from described jack 20 to different directions and extends and form respectively end and be similar to Y shape or fall Y shape etc., but non-as limit; Described jack 20 can plug for example cylindricality magnetic core, between each described winding (the first winding, the second winding and the tertiary winding), carries out magnetic coupling by described cylindricality magnetic core; Described three ends be respectively equipped with electrical connection described the first winding the first pad group, be electrically connected the second pad group of described the second winding and be electrically connected the 3rd pad group of the described tertiary winding, between described the first pad group, the second pad group and the 3rd pad group, keep default safe distance, i.e. the above-mentioned 3.3mm that is more than or equal to.
Shown in Fig. 3 and Fig. 4, described the first pad group comprises that diagram is numbered 21,22 pad, and the toroidal conductor in tetra-layers of printed circuit board (PCB) 2GTL, L2 in corresponding diagram 4, L11, GBL, that is to say that the first winding comprises this toroidal conductor of four layers respectively; Described the second pad group comprises that diagram is numbered 23,24 and 25 pad, and the toroidal conductor in tetra-layers of corresponding printed circuit board (PCB) 2L3, L4, L5, L6, that is to say that the second winding comprises this toroidal conductor of four layers; Described the 3rd pad group comprises that diagram is numbered 26,27 and 28 pad, and the toroidal conductor in tetra-layers of corresponding printed circuit board (PCB) 2L7, L8, L9, L10, that is to say that the tertiary winding comprises this toroidal conductor of four layers; Wherein numbering 21,25 and 28 pad is Same Name of Ends.
Certainly it should be noted that, described Fig. 4 is only for illustrating, and in actual demand situation, the position of the first winding, the second winding and the tertiary winding can exchange, and between each pad group, also can exchange, and is not limited with this embodiment.
As shown in Figure 4, multiple circuit layers (GTL layer is to GBL layer) of described printed circuit board (PCB) 2 can be integrated on different not cupric central layers 29, and its material is for example that described circuit layer is laid on same dielectric material and the upper and lower surface of described solid spacer medium 290, described printed circuit board (PCB) 2 is at least at the toroidal conductor place of the first winding layer, between the toroidal conductor place layer of the toroidal conductor place layer of the second winding and the tertiary winding, be provided with solid spacer medium 290, wherein, want >=1.0mm of thickness between the circuit layer of different windings place, want >=1.0mm of for example, spacer medium thickness between L6 layer and L7 layer (being loaded with respectively the toroidal conductor of the second winding and the tertiary winding), want >=1.0mm of for example, spacer medium thickness between L11 layer and L10 layer (being loaded with respectively the toroidal conductor of the first winding and the tertiary winding), be for example 1mm, for example, and that distance between the toroidal conductor place circuit layer of same winding (the first winding or the second winding or the tertiary winding coexist) does not just need is so large, such as, solid spacer medium 290 between L4 layer and L5 layer is thick is 0.12mm etc., isolation voltage >=alternating voltage 4000V of described solid spacer medium 290, preferred, described solid spacer medium 290 materials are FR-4 glass fiber material.
Preferably, described toroidal conductor is Copper Foil institute wire and forms, thickness >=35um, width >=0.12mm, creepage trace index (CTI) >=175, wherein, described is not 0.27mm containing the thickness of logical central layer, the not copper thickness 0.055mm of circuit layer on cupric central layer 29, this,, only for illustrating, is not limited with the present embodiment certainly.
It should be noted that above-mentioned layer all refers to circuit layer.
In sum, the explosion-proof isolating transformer of one that the utility model provides, comprising: skeleton and multiple winding; Described skeleton comprises printed circuit board (PCB); Described multiple winding is the toroidal conductor on described printed circuit board (PCB), preferably, described multiple winding is to form at the toroidal conductor of the different layers of described printed circuit board (PCB), and is provided with solid spacer medium between each winding place circuit layer, thereby ensures reliable voltage isolation and solid isolation.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (9)
1. an explosion-proof isolating transformer, is characterized in that, comprising: skeleton and multiple winding; Described skeleton comprises printed circuit board (PCB); Described multiple winding is the toroidal conductor on described printed circuit board (PCB), wherein, described multiple winding comprises the first winding and the second winding, described printed circuit board (PCB) has multilayer, described the first winding be on described printed circuit board (PCB) wherein the electrical connection of the toroidal conductor of one deck or the toroidal conductor of multilayer form, described the second winding is be electrically connected formation at the toroidal conductor of wherein one deck with layer or the toroidal conductor of multilayer with the toroidal conductor of the first winding on described printed circuit board (PCB).
2. explosion-proof isolating transformer according to claim 1, it is characterized in that, the middle part of described skeleton is provided with for the jack of insertion magnetic core the both sides extension from described jack to different directions and forms respectively end, described two ends are respectively equipped with the first pad group of described the first winding of electrical connection and are electrically connected the second pad group of described the second winding, wherein, between described the first pad group and the second pad group, keep default safe distance.
3. explosion-proof isolating transformer according to claim 1, is characterized in that, described printed circuit board (PCB) is at least provided with solid spacer medium between the toroidal conductor place layer of the first winding and the toroidal conductor place layer of the second winding.
4. explosion-proof isolating transformer according to claim 1, it is characterized in that, described multiple winding also comprises the tertiary winding, and the described tertiary winding is not to be electrically connected formation at the toroidal conductor of wherein one deck with layer or the toroidal conductor of multilayer with the toroidal conductor of the first winding and the second winding on described printed circuit board (PCB).
5. explosion-proof isolating transformer according to claim 4, it is characterized in that, described skeleton is provided with for the jack of insertion magnetic core the three sides extensions from described jack to different directions and forms respectively end, described three ends be respectively equipped with described the first winding of electrical connection the first pad group, be electrically connected the second pad group of described the second winding and be electrically connected the 3rd pad group of the described tertiary winding, between described the first pad group, the second pad group and the 3rd pad group, keep default safe distance.
6. explosion-proof isolating transformer according to claim 5, it is characterized in that, described printed circuit board (PCB) is at least provided with solid spacer medium between the toroidal conductor place layer of the toroidal conductor place of the first winding layer, the second winding and the toroidal conductor place layer of the tertiary winding.
7. according to the explosion-proof isolating transformer described in claim 2 or 5, it is characterized in that, described jack plugs cylindricality magnetic core, between each described winding, carries out magnetic coupling by described cylindricality magnetic core.
8. according to the explosion-proof isolating transformer described in claim 3 or 6, it is characterized in that described solid spacer medium thickness >=1.0mm, isolation voltage >=alternating voltage 4000V.
9. according to the explosion-proof isolating transformer described in any one in claim 1 to 6, it is characterized in that the thickness >=35um of described toroidal conductor, width >=0.12mm, creepage trace index >=175.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875765.0U CN203706834U (en) | 2013-12-27 | 2013-12-27 | Explosion-proof isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875765.0U CN203706834U (en) | 2013-12-27 | 2013-12-27 | Explosion-proof isolation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706834U true CN203706834U (en) | 2014-07-09 |
Family
ID=51057237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320875765.0U Expired - Lifetime CN203706834U (en) | 2013-12-27 | 2013-12-27 | Explosion-proof isolation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752044B (en) * | 2013-12-27 | 2018-03-27 | 上海辰竹仪表有限公司 | A kind of explosiveproof isolation transformer |
-
2013
- 2013-12-27 CN CN201320875765.0U patent/CN203706834U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752044B (en) * | 2013-12-27 | 2018-03-27 | 上海辰竹仪表有限公司 | A kind of explosiveproof isolation transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |