CN205582719U - Interior three -phase integral type voltage transformer who establishes resistance - Google Patents

Interior three -phase integral type voltage transformer who establishes resistance Download PDF

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Publication number
CN205582719U
CN205582719U CN201620152155.1U CN201620152155U CN205582719U CN 205582719 U CN205582719 U CN 205582719U CN 201620152155 U CN201620152155 U CN 201620152155U CN 205582719 U CN205582719 U CN 205582719U
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China
Prior art keywords
draws
pin
resistance
needle
integral
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CN201620152155.1U
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Chinese (zh)
Inventor
季红雨
李威良
宋蓬勃
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Jinan Bojing Electronic Co Ltd
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Jinan Bojing Electronic Co Ltd
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Abstract

The utility model provides an interior three -phase integral type voltage transformer who establishes resistance, includes casing and apron, the casing contains three cavity, and two insulation boards for the cavity that link to each other are each other kept apart, every put coredly in the cavity, twine primary winding and secondary on the iron core, the apron can be in by the block on the casing, be equipped with the window with the cavity one -to -one on the apron, the window periphery is equipped with four and draws the needle: a draws that needle, B draw the needle, C draws the needle and D draws the needle, C draws needle and D and draws and be equipped with resistance between the needle, a draws the needle and draws two extreme points that primary winding is connected respectively to the needle with B, C draws the needle and draws two extreme points that secondary is connected respectively to the needle with D. Making each components and parts overall arrangement neat and pleasing to the eye on printed circuit board, avoiding the improper electromagnetic interference who arouses of overall arrangement, improve the working property, printed circuit board's volume is reduced to the more important thing, realizes printed circuit board's miniaturization.

Description

The Integral three-phase voltage transformer of resistance is set in a kind of
Technical field
This utility model relates to electrical equipment, particularly relate to a kind of in set the three-phase one of resistance Body formula voltage transformer.
Background technology
Along with industrial equipment is the most accurate, electronic product is towards miniaturization, digital development, print Circuit board processed is also towards high density, high accuracy development.Printed circuit plate bulk has become restriction electricity The major reason of sub-product miniaturization.The basic ideas reducing volume can be from the essence improving circuit board Close degree, reduce the volume of components and parts and by two dimension to several aspect exhibitions such as three-dimensional development Open.
Existing voltage transformer mostly is three phase separation, therefore generally requires three single-phase voltages Transformer meets the demand of three-phase circuit, although also have three-phase integrated voltage transformer now, But it is short of neat with attractive in appearance in the layout of circuit board, there is serious electromagnetism simultaneously and do Disturbing, the service behaviour that result in voltage transformer is low, additionally, resistance is arranged on mutual induction of voltage The volume making whole device outside device increases, and is unfavorable for the saving in space.
Utility model content
In order to solve above-mentioned technical problem, the utility model proposes a kind of in set the three-phase one of resistance Body formula voltage transformer, makes the neat and attractive in appearance of each components and parts layout on a printed circuit board, keeps away Exempt from the improper electromagnetic interference caused of layout, improve service behaviour, prior reduce printed circuit The volume of plate, it is achieved the miniaturization of printed circuit board.
To achieve these goals, the technical solution of the utility model is:
The Integral three-phase voltage transformer of resistance is set in a kind of, including housing and cover plate, described Housing comprises three chambers, and two the chamber insulation boards being connected with each other are isolated;Each described chamber Room is equipped with iron core, described iron core is wrapped armature winding and secondary windings;Described cover plate energy On the housing, described cover plate is provided with and chamber window one to one in enough engagings;Described Window periphery is provided with four and draws that pin: A draws pin, B draws pin, C draws pin and D draws pin;Described C Draw pin and D draws and is provided with resistance between pin;Described A draws pin and draws pin with B and be connected armature winding respectively Two end points, described C draws pin and draws pin with D and be connected two end points of secondary windings respectively.
Described cover plate upper surface, C draw pin and D and draw the side of pin and be provided with identification hole.
Described iron core and armature winding contact surface are covered with insulating barrier;Described iron core connects with secondary windings Contacting surface is covered with insulating barrier.
Described armature winding is the copper cash of plated surface paint;Described secondary windings is the copper of plated surface paint Line.
The lower surface of described cover plate is provided with draw-in groove, being provided with and described pocket matches of described housing The groove used.
The lower surface of described cover plate is provided with projection.
Described A draws pin, B draws pin, C draws pin and D draws pin and is conductive metal pin;Institute State that A draws pin, B draws pin, C draws pin and D draws the cross section of pin and is circle or rectangle.
The shape of described iron core is ring magnetic material.
Described magnetic material is amorphous metal or microcrystalline metal.
Described housing is cuboid housing, and the height of described insulation board is less than described cuboid housing Height.
The beneficial effects of the utility model are: the technical program is proposed that a accurate electricity Pressure transformer, three the voltage transformer monomer incorporation being used on printed circuit board are one Rise, the layout of components and parts on circuit board can be improved, effectively prevent components and parts arrangement from improper causing Electromagnetic interference.Voltage transformer described in the utility model another be particularly advantageous in that most, close Reason utilizes the space of transformer, by output resistance RLPut inside transformer, save circuit board empty Between.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is each ingredient structural representation.
Fig. 3 is shell structure schematic diagram.
Fig. 4 is the perspective view of depression angle lower cover.
Fig. 5 is the perspective view looking up angle lower cover.
Fig. 6 is the schematic diagram of draw-in groove and groove;
Fig. 7 is cover plate top view.
Fig. 8 is iron core and primary, secondary windings structural representation.
Fig. 9 is the circuit theory diagrams during single-phase potential transformer uses.
In figure: 1. housing;2. cover plate;3. coil;31. closure periphery;32. insulation boards;33. Draw-in groove;42. windows;43. draw pin;44. resistance;45. identification holes;46. grooves;47. is protruding; 71. iron cores;72. armature windings;73. secondary windings.
Detailed description of the invention
In order to be better understood by the technical solution of the utility model, below in conjunction with the accompanying drawings to this practicality Novel it is described further.
Set the Integral three-phase voltage transformer of resistance in a kind of, isolate on printed circuit board Forceful electric power, using for three-phase electricity need to be simultaneously with three voltage transformer monomers, this concrete voltage Transformer monomer uses circuit as shown in Figure 9.
Being this voltage transformer in dotted line, N1 is armature winding, and N2 is secondary windings, N1: N2=1:1.Input voltage vin (Vin=220V) is by current-limiting resistance R's (R=110K Ω) Effect produces small area analysis and flows into transformer primary winding, by electromagnetic induction effect secondary around Group is inducted the electric current of same size, then by output resistance RL, output voltage Vout.
Being directed to this voltage transformer range is three-phase electricity, needs to use three lists simultaneously Body, three transformers are combined convenient use, more effectively prevent by this utility model The electromagnetic interference caused because transformer arrangement on circuit boards is improper.By output resistance RL Arranging inside this utility model voltage transformer, Appropriate application transformer space, can be circuit Plate saves the space of three resistance and realizes reducing the effect of circuit board volume.Later stage is it is contemplated that increase This utility model voltage transformer volume, is added to this utility model mutual induction of voltage by current-limiting resistance R In device, realize reducing the effect of circuit board volume further.
As shown in Figures 1 to 4, a kind of in set the Integral three-phase voltage transformer of resistance, its Feature is, including housing 1 and cover plate 2, described housing comprises three chambers, is connected with each other Two chamber insulation boards 31 are isolated;Each described chamber is equipped with iron core 71, described iron core On be wrapped armature winding 72 and secondary windings 73;Described cover plate can be fastened on described housing On, described cover plate is provided with and chamber window 42 one to one;Described window periphery is provided with Four are drawn that pin 43:A draws pin, B draws pin, C draws pin and D draws pin;Described C draws pin and D Draw and between pin, be provided with resistance 44;Described A draws pin and draws pin with B and be connected the two of armature winding respectively Individual end points, described C draws pin and draws pin with D and be connected two end points of secondary windings respectively.
Described cover plate upper surface, C draw pin and D and draw the side of pin and be provided with identification hole 45.
Described iron core and armature winding contact surface are covered with insulating barrier;Described iron core connects with secondary windings Contacting surface is covered with insulating barrier.
Described armature winding is the copper cash of plated surface paint.
Described secondary windings is the copper cash of plated surface paint.
As shown in Figure 6, the lower surface of described cover plate is provided with draw-in groove 33, and described housing sets There is the groove 46 used with described pocket matches.
The lower surface of described cover plate is provided with protruding 47.
Described A draws pin, B draws pin, C draws pin and D draws pin and is conductive metal pin.
Described A draws pin, B draws pin, C draws pin and D draw the cross section of pin be circle or Rectangle.
The shape of described iron core is annular.
Described core material is magnetic material.
Described magnetic material is amorphous metal or microcrystalline metal.
Described housing is cuboid housing, and the height of described insulation board is less than described cuboid housing Height.
The process manufacturing voltage transformer described in the utility model is as follows: this utility model voltage Transformer is welded on after cover plate 2 draws on pin 43 by coil 3, and cover plate 2 is entrenched in protective case 1 Inject epoxide-resin glue together to be formed by heat cure.Coil includes armature winding and secondary windings. This utility model voltage transformer is a tight type voltage transformer, and specification size only has long 28mm, wide 19mm and high 25mm.
According to transformer national standard requirement, this utility model voltage transformer protective case, cover plate and The type selecting of epoxy resin glue material is to select flame retardant type macromolecular material.
According to the sequencing of processing technology, narration can be started from coil 3.
First it is that magnetive cord 71 is carried out insulation processing, bag thin film or add outside customization Shell, prevents iron core 71 from causing by iron core 71 as Medium Voltage with directly contacting of enamel-covered wire Puncture just this grade of winding coil.At the beginning of followed by iron core, the enamel-covered wire of the certain number of turn of coiling is formed Level coil 72 and secondary coil 73.Reserved certain distance gap is required not between primary and secondary coil Contact between energy, be also to prevent voltage breakdown between primary and secondary winding from causing damage.Coiling The coil of good primary and secondary winding is as shown in Figure 8.
Followed by cover plate 2 first being carried out pretreatment work, as shown in Figure 4, Figure 5 and Figure 6, With an identification point 45 on cover plate 2, determine for differentiation and draw pin 43 and primary and secondary winding the end of a thread Welding relation.Here the pin that once draws at identification point 45 place is entirely and three coils 3 Secondary windings 73 welds.After determining this welding relation, by three resistance 44, i.e. output resistances RLIt is separately fixed at and draws on position shown in pin 43 Fig. 4 or Fig. 5.After Gu Ding, use flatiron and Its resistance 44 is firmly welded together by stannum silk with drawing pin 43, highlights here and draws pin 43 and carry There is the superiority at turning, add that protruding 47 parts are fixing and draw pin 43, it is easier to add resistance operation Operation.
After cover plate 2 pretreatment, it is simply that coil 3 and welding of drawing pin 43.Coil 3 with draw The bonding wire of pin 43 is it is critical that draw the pin 43 primary and secondary winding leading-out wire head with coil 3 One_to_one corresponding.Corresponding protective case 1 is three cavitys, drawing pin 43 and can be divided into three groups on cover plate 2, One group four are drawn the corresponding coil 3 of pin 43.Two extractions of the armature winding 72 of coil 3 The end of a thread is connected on the side not having identification point 45, and two extraction the end of a thread of secondary windings 73 are connected on band There is the side of identification point 45.Same, the extraction joint of all coils 3 and the company drawing pin 43 Connect part and be both needed to tin plating process, stop the generation of the product bug of loose contact.Fig. 2 can be passed through Shown in, image find out coil 3 with draw pin 43 corresponding relation.
The top view of Fig. 7 cover plate, this figure is primarily to embody the position drawing between pin and close System.Draw pin A and draw the highly consistent of the direct beeline of pin B and coil, embody this reality With minimizing of novel voltage mutual inductor.Draw pin B and the distance drawn between pin C is then divided into outside Distance and inner distance two parts.Between outer distance is chosen as between 12.7mm, and pricking with needle Away from becoming integral multiple, can realize being inserted on pricking with needle use;Inner distance then with the maximum gauge of coil Match, also for realizing minimizing of this utility model voltage transformer.
Next cover plate 2 and coil 3 are installed in protective case 1, after injection epoxy resin adhesive curing, This utility model voltage transformer can be completed.Protective case 1 is to be become by mold injection with cover plate 2 Type technique realizes, and closure periphery 31 has draw-in groove 33 part, fluted 46 of cover plate 2 edge Point, housing 1 can be realized chimeric with the perfection of cover plate 2.
Protective case 1 is internal is divided into three cavitys by twice wall 32, is respectively put into a coil 3, Can be considered and three monomers are bundled.Realize the purpose being used together of three monomers, letter Change operating procedure, optimize the layout of printed circuit board component, save space, improve product matter Amount and efficiency.
Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but The not restriction to this utility model protection domain, one of ordinary skill in the art should be understood that On the basis of the technical solution of the utility model, those skilled in the art need not pay creativeness Various amendments that work can be made or deformation are still within protection domain of the present utility model.

Claims (10)

1. set an Integral three-phase voltage transformer for resistance in, it is characterized in that, including shell Body and cover plate, described housing comprises three chambers, two the chamber insulation boards being connected with each other every From;Each described chamber is equipped with iron core, described iron core is wrapped armature winding with secondary around Group;Described cover plate can engage on the housing, and described cover plate is provided with and chamber one a pair The window answered;Described window periphery be provided with four draw that pin: A draws pin, B draws pin, C draw pin with And D draws pin;Described C draws pin and D draws and is provided with resistance between pin;Described A draws pin and draws pin with B Connect two end points of armature winding respectively, described C draw pin draw with D pin be connected respectively secondary around Two end points of group.
The most according to claim 1 a kind of in set the Integral three-phase mutual induction of voltage of resistance Device, is characterized in that, described cover plate upper surface, C draw pin and D and draw the side of pin and be provided with identification hole.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, described iron core and armature winding contact surface are covered with insulating barrier;Described ferrum Core and secondary windings contact surface are covered with insulating barrier.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, described armature winding is the copper cash of plated surface paint;Described secondary windings Copper cash for plated surface paint.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, the lower surface of described cover plate is provided with draw-in groove, being provided with of described housing The groove used with described pocket matches.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, the lower surface of described cover plate is provided with projection.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, described A draws pin, B draws pin, C draws pin and D draws pin and is and leads Electric metal draws pin;Described A draws pin, B draws pin, C draws pin and D draws the cross section of pin and is Circle or rectangle.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, the shape of described iron core is ring magnetic material.
The most according to claim 8 a kind of in set the Integral three-phase mutual induction of voltage of resistance Device, is characterized in that, described magnetic material is amorphous metal or microcrystalline metal.
The most according to claim 1 and 2 a kind of in set the Integral three-phase voltage of resistance Transformer, is characterized in that, described housing is cuboid housing, and the height of described insulation board is less than The height of described cuboid housing.
CN201620152155.1U 2016-02-29 2016-02-29 Interior three -phase integral type voltage transformer who establishes resistance Active CN205582719U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620152155.1U CN205582719U (en) 2016-02-29 2016-02-29 Interior three -phase integral type voltage transformer who establishes resistance

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Application Number Priority Date Filing Date Title
CN201620152155.1U CN205582719U (en) 2016-02-29 2016-02-29 Interior three -phase integral type voltage transformer who establishes resistance

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105575642A (en) * 2016-02-29 2016-05-11 济南铂晶电子科技有限公司 Three-phase integrated voltage transformer internally provided with resistors
CN109616305A (en) * 2018-11-27 2019-04-12 山东航天电子技术研究所 A kind of three-phase integrated straight-through current transformer
WO2021147277A1 (en) * 2020-01-21 2021-07-29 益仕敦电子(珠海)有限公司 Multi-phase transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105575642A (en) * 2016-02-29 2016-05-11 济南铂晶电子科技有限公司 Three-phase integrated voltage transformer internally provided with resistors
CN109616305A (en) * 2018-11-27 2019-04-12 山东航天电子技术研究所 A kind of three-phase integrated straight-through current transformer
WO2021147277A1 (en) * 2020-01-21 2021-07-29 益仕敦电子(珠海)有限公司 Multi-phase transformer

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