CN106098354A - Single-turn transformer and a winding thereof and a winding manufacture method - Google Patents
Single-turn transformer and a winding thereof and a winding manufacture method Download PDFInfo
- Publication number
- CN106098354A CN106098354A CN201610713433.0A CN201610713433A CN106098354A CN 106098354 A CN106098354 A CN 106098354A CN 201610713433 A CN201610713433 A CN 201610713433A CN 106098354 A CN106098354 A CN 106098354A
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- China
- Prior art keywords
- winding
- terminal
- conductor
- turn transformer
- connecting plate
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Classifications
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F27/2852—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The present invention relates to single-turn transformer and a winding thereof and a winding manufacture method, the problem of waste of material high with the manufacturing cost solving to occur in the manufacture of a winding in prior art.The Primary Conductor of the present invention is formed by the conductor coiling of banding, so can designing through-flow value and select the coiling number of plies of tape conductor, so that the sectional area of Primary Conductor can change flexibly with designing through-flow value according to Primary Conductor, it is to avoid the waste of material.
Description
Technical field
The present invention relates to single-turn transformer and a winding thereof and a winding manufacture method.
Background technology
Current transformer, as one of critical elements that electrical equipment is supporting, mainly gives measuring instrument, instrument or protection dress
Put transmission information.Specifically current transformer winding is connected with electrical equipment, by the Secondary Winding of current transformer
It is connected with measuring cell, to realize the purpose of extension measuring cell range.
Single-turn transformer i.e. refers to the current transformer of an only circle coil in a winding, single in prior art
Winding construction of circle formula current transformer is as it is shown in figure 1, include a terminal 2 and be used as the conducting rod 1 of Primary Conductor.One
Secondary terminal uses casting and molding method manufacture, and casting processing cycle length, process costs are high, operating process is more dangerous, also
Surrounding enviroment can be had a negative impact.Meanwhile, terminal 2 hardness of casting processing is little, seamed edge is many, be difficult to processing, so
After it being welded with conducting rod 1, the difficult quality guarantee of commissure, this temperature rise that will result in finished product current transformer does not meets
Design requires and can not come into operation.And conducting rod 1 typically selects the standard component of outsourcing, owing to the specification of standard component is limited, raw
Producing enterprise for reducing stock, ensureing on the premise of product quality, the conducting rod 1 in the range of certain specification all can be according to can be completely
The cross-sectional area of the conducting rod of foot maximum current circulation demand is purchased, and this has resulted in the waste of material.
Summary of the invention
It is an object of the invention to provide a kind of single-turn transformer manufacture method with a winding, existing to solve
There is manufacturing cost height, the problem of waste of material occurred in the manufacture of a winding in technology；The present invention also aims to carry
The winding manufactured for above-mentioned manufacture method and single-turn transformer.
For achieving the above object, the single-turn transformer of the present invention technical scheme of winding manufacture method
It is:
Single-turn transformer, by a winding manufacture method, comprises the following steps, the first step, processes a terminal；Second
Step, carries out coiling to the conductor of banding and processes Primary Conductor；3rd step, is fixedly connected as a terminal with Primary Conductor
Integrally；4th step, processes bus installing hole on a terminal.
In the described first step, use an extrinsion pressing terminal of processing.
The single-turn transformer of the present invention technical scheme of winding is:
Single-turn transformer is with a winding, including a terminal and be fixedly connected on once leading of a terminal lower end
Body, described Primary Conductor includes the tape conductor of many arranged stacked.
Further, every tape conductor is all bent into profile that is U-shaped and that make Primary Conductor be formed with tape conductor and fits mutually
Join, upper end has the U-shaped part of opening.
Further, the two ends, left and right of U-shaped part opening be equipped with in left-right direction towards opening center extend straight
Section, the upper side of flat segments is connected for fixing with the lower surface of a terminal.
As to the optimization of either a program in three above scheme, a terminal offers the through hole of up/down perforation, logical
Being fixedly installed inserts in hole, inserts offers the tapped blind hole that axis is vertically extending, the upper end of tapped blind hole is opened
Mouth, lower end closed.
Further, a terminal includes horizontally disposed bus connecting plate and is vertically arranged at below bus connecting plate
Primary Conductor connecting plate, described through hole is arranged on bus connecting plate.
Further, the lower end of described inserts is positioned under the lower surface of bus connecting plate.
The single-turn transformer of the present invention is by the following technical solutions:
Single-turn transformer, including a winding, one time winding includes a terminal and is fixedly connected under a terminal
The Primary Conductor of end, described Primary Conductor includes the tape conductor of many arranged stacked.
Further, every tape conductor is all bent into profile that is U-shaped and that make Primary Conductor be formed with tape conductor and fits mutually
Join, upper end has the U-shaped part of opening.
Further, the two ends, left and right of U-shaped part opening be equipped with in left-right direction towards opening center extend straight
Section, the upper side of flat segments is connected for fixing with the lower surface of a terminal.
As to the optimization of either a program in three above scheme, a terminal offers the through hole of up/down perforation, logical
Being fixedly installed inserts in hole, inserts offers the tapped blind hole that axis is vertically extending, the upper end of tapped blind hole is opened
Mouth, lower end closed.
Further, a terminal includes horizontally disposed bus connecting plate and is vertically arranged at below bus connecting plate
Primary Conductor connecting plate, described through hole is arranged on bus connecting plate.
Further, the lower end of described inserts is positioned under the lower surface of bus connecting plate.
The invention has the beneficial effects as follows: the Primary Conductor of the present invention is formed by the conductor coiling of banding, so can be according to one
The through-flow value that designs of partial conductor selectes the coiling number of plies of tape conductor, so that the sectional area of Primary Conductor can be with the through-flow value of design
Flexible change, it is to avoid the waste of material.
Further, a terminal of the present invention is extruded, and extruded not only low cost, efficiency are high, especially can
Improve the hardness of a rear terminal, make a terminal have excellent switching performance and machinability.The most also can be according to one
Compression tool is adjusted so that the sectional area of a terminal can be flexible with the through-flow value of design by the through-flow value that designs of secondary terminal
Change.
Accompanying drawing explanation
Fig. 1 is the cut-away view of a winding in prior art；
Fig. 2 is the structural representation of an embodiment of a winding of the present invention；
Fig. 3 is the structural representation of an embodiment of the single-turn transformer of the present invention；
Fig. 4 is a terminal and the sectional view of inserts junction in Fig. 2；
Fig. 5 is the sectional view of a terminal in Fig. 2；
Fig. 6 is the sectional view of inserts in Fig. 2.
In figure: 1, conducting rod；2, a terminal；3, Primary Conductor；4, inserts；5, secondary coil.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
The specific embodiment of the single-turn transformer of the present invention, as shown in Figures 2 to 6, exists including by epoxy resin
The casting insulated body 6 of moulding by casting in mould, is provided with a winding and three secondary coils 5 in casting insulated body 6.Once around
Group includes a terminal 2 and the Primary Conductor 3 being connected with terminal 2, inserts 4, and Primary Conductor 3 is through three secondary coils
5, three secondary coils 5 are all by the outside outlet of secondary wiring 7.
Terminal 2 is the connecting lever plate that thickness is identical in the longitudinal direction, extruded through compression tool by conductive material.
Specifically include top the bus connecting plate 21 extended in left-right direction and be vertically arranged in the one of bus connecting plate lower left side
Partial conductor connecting plate 22, bus connecting plate 21 offers through hole, and the top interference of inserts 4 is plugged in through hole and makes inserts 4
Bottom exposed by the lower surface of bus connecting plate 21.Through hole includes that section, aperture section, macropore section are bored in aperture section enlarging from top to bottom
And macropore section enlarging cone section, the aperture of macropore section meets elastic conjunction relation with the upper diameter of inserts 4, uses at the bottom of the hole of macropore section
Think that the degree of depth that inserts 4 loads to a terminal 2 carries out spacing in coordinating with the upper surface block of inserts 4.
The middle part of the outer peripheral face of inserts 4 offers the convex edge 42 of the annular of evagination, and the upper surface of convex edge 42 is and aperture section
The conical surface that the tapering of enlarging cone section is adaptive, thus when inserts 4 upper surface with contact block cooperation at the bottom of the hole of macropore section after, convex edge
The upper surface of 42 can block in the aperture section enlarging cone section in the through hole on bus connecting plate 21 to avoid liquid in casting process
The epoxy resin of state enters the junction of through hole and inserts.Vertically extending tapped blind hole 41 is offered in the middle part of inserts 4,
The opening upwards of tapped blind hole 41.Tapped blind hole 41 passes for bolt so that the bus-bar being used for connecting bus is pressed abd fixed on mother
On line connecting plate 21 upper surface, thus tapped blind hole 41 is as using for connecting the bus connecting hole of bus.Compared to
Directly offering the form of the screwed hole of up/down perforation on bus connecting plate 21, the setting of inserts 4 avoids to casting insulated
The installation silk entanglement caused during epoxy resin enters screwed hole during body 6 moulding by casting, and the bus-bar therefore caused
Low with the bonding strength of bus connecting plate 21 and make both generation gap, junction and corresponding resistance increase phenomenon.Meanwhile,
It is female in the case of not increasing bus connecting plate thickness that the form that arranges of the lower surface of bus connecting plate 21 is stretched out in the bottom of inserts 4
In line connecting hole 23, the length of thread segment is expanded.
In other embodiments, in the case of the thickness of bus connecting plate is enough, the lower surface of inserts can also be with mother
The lower end of line connecting plate flushes setting；It is, of course, also possible to save inserts but directly offer on bus connecting plate upper end open,
The tapped blind hole of lower end closed.
Primary Conductor 3 is C-shaped on perspective plane along the longitudinal direction, many bendings turn to upper end and have the U of opening
Type soft copper band stacking split is formed, and specifically includes the U-shaped main body 31 of upper end open and is arranged at the upper end open two of U-shaped main body 31
The left flat segments 32 of end, right flat segments 33.The bearing of trend of left and right flat segments is all towards the center of opening, in other words left flat
Straight section 32 level extends to the right, and right flat segments 33 level extends to the left.The lower surface of terminal 2 use gas welding be fixed on a left side,
On the upper side of right flat segments.Primary Conductor 3 is formed by soft copper band coiling, so can be according to the design of Primary Conductor through-flow value choosing
Determine the coiling number of plies of soft copper band, so that the sectional area of Primary Conductor 3 can change flexibly with designing through-flow value, it is to avoid material
Waste.In other embodiments, the flat segments at Primary Conductor 3 two ends may be omitted with, but by the two of U-shaped Primary Conductor
End is directly weldingly fixed on the lower surface of a terminal；Certainly, soft copper band can also bend and turn to linear once lead
Body, now has only to the extended length of the Primary Conductor connecting plate on a terminal to meet the overall dimensions need of a winding
Ask.
A terminal 2 after extruded relatively casts the terminal hardness obtained and is greatly improved, thus tool
Have an excellent machinability, cleaved after can obtain the lower surface that smooths.And the Primary Conductor self that soft copper band is made just tool
There is smooth outer surface, so after the upper side of flat segments is welded to connect in the lower end of a terminal 2 and Primary Conductor 3, being more easy to
Ensure the seamless connectivity of junction, it is to avoid junction has gap and winding therefore causing is the easiest
The generation of heating problem.
The manufacture method of the current transformer of the present invention is as follows: manufacture a winding and secondary coil the most respectively, then by one
Secondary winding, secondary coil 5 and secondary wiring 7 are put in mould by setting position and casting epoxy resin, asphalt mixtures modified by epoxy resin in mould
The manufacture to current transformer is i.e. completed after fat solidification.
The manufacture method of winding is as follows: the first step, uses conductive material by a terminal extruding on compression tool
Molding；Second step, selects suitable soft copper band blanking, by technology requirement chi on Special mould by technology requirement and size of current
Very little Primary Conductor is carried out coiling, after coiling, place it in and be corrected in special frock, for avoiding a winding work
Point discharge phenomenon occurs during part, soft copper band unnecessary for two ends is cut so that the end face of Primary Conductor is concordant；3rd step,
Primary Conductor is welded and fixed with a terminal；4th step, cuts a terminal, and the bus at a terminal connects
Process the through hole of up/down perforation on fishplate bar and install the inserts offering tapped blind hole in through-holes.In other embodiments, exist
In the case of can ensure that work piece surface accuracy, terminal can also casting or use other machine-tooled methods to add
Work molding.
The manufacture of secondary coil 5 is also first to use Special mould to carry out coiling, then corrects on special tooling.Certainly, for
Shorten the manufacturing cycle of current transformer, it is also possible to while secondary coil 5 is carried out coiling, carry out the blanking of Primary Conductor
Preparation.
The single-turn transformer of the present invention embodiment of winding: the structure of a winding of the present invention and list
In the specific embodiment of circle formula current transformer, the concrete structure of a winding is identical, no longer describes in detail.
The single-turn transformer of the present invention embodiment of winding manufacture method a: winding of the present invention
Manufacture method is identical with the manufacture method of in the specific embodiment of single-turn transformer winding, no longer describes in detail.
Claims (9)
1. single-turn transformer is by a winding manufacture method, it is characterised in that: comprise the following steps, the first step, processing
Terminal；Second step, carries out coiling to the conductor of banding and processes Primary Conductor；3rd step, by terminal with once
Conductor is connected to one；4th step, processes bus installing hole on a terminal.
Single-turn transformer the most according to claim 1 is by a winding manufacture method, it is characterised in that: described
In the first step, use an extrinsion pressing terminal of processing.
3. single-turn transformer is with a winding, including a terminal and be fixedly connected on a terminal lower end once
Conductor, it is characterised in that: described Primary Conductor includes the tape conductor of many arranged stacked.
Single-turn transformer the most according to claim 3 is with a winding, it is characterised in that: every tape conductor is equal
It is bent into U-shaped and makes Primary Conductor form U-shaped part suitable with the profile of tape conductor, that upper end has opening.
Single-turn transformer the most according to claim 4 is with a winding, it is characterised in that: a left side for U-shaped part opening
Right two ends are equipped with the flat segments extended in left-right direction towards opening center, and the upper side of flat segments is used for and a terminal
Lower surface is fixing to be connected.
6. according to the single-turn transformer described in claim 3 or 4 or 5 with a winding, it is characterised in that: a terminal
On offer the through hole of up/down perforation, through hole is fixedly installed inserts, inserts offers axis vertically extending
Tapped blind hole, the upper end open of tapped blind hole, lower end closed.
Single-turn transformer the most according to claim 6 is with a winding, it is characterised in that: one time terminal includes water
Putting down the bus connecting plate arranged and be vertically arranged at the Primary Conductor connecting plate below bus connecting plate, described through hole is arranged on mother
On line connecting plate.
Single-turn transformer the most according to claim 7 is with a winding, it is characterised in that: the lower end of described inserts
It is positioned under the lower surface of bus connecting plate.
9. single-turn transformer, it is characterised in that: include the single-turn type Current Mutual Inductance according to any one of claim 3 ~ 8
Device is with a winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610713433.0A CN106098354B (en) | 2016-08-24 | 2016-08-24 | Single-turn transformer and its first winding and first winding manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610713433.0A CN106098354B (en) | 2016-08-24 | 2016-08-24 | Single-turn transformer and its first winding and first winding manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106098354A true CN106098354A (en) | 2016-11-09 |
| CN106098354B CN106098354B (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610713433.0A Active CN106098354B (en) | 2016-08-24 | 2016-08-24 | Single-turn transformer and its first winding and first winding manufacturing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106098354B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593843A (en) * | 2021-07-13 | 2021-11-02 | 三积瑞科技（苏州）有限公司 | Ultra-low-resistance hot-pressing non-coupling double inductor and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2541936Y (en) * | 2002-04-23 | 2003-03-26 | 方静 | Dry high voltaeg current transformer |
| JP2004319663A (en) * | 2003-04-15 | 2004-11-11 | Sht Corp Ltd | Current transformer |
| CN201256074Y (en) * | 2008-07-12 | 2009-06-10 | 厦门大一互科技有限公司 | Primary winding connecting terminal component for current transducer |
| CN201294159Y (en) * | 2008-11-05 | 2009-08-19 | 南通海立电子有限公司 | Aluminum electrolytic capacitor terminal |
| CN102468046A (en) * | 2010-11-15 | 2012-05-23 | 大连华亿电力电器有限公司 | Small-size current transformer |
| CN202307496U (en) * | 2011-10-20 | 2012-07-04 | 镇江市丹高电器有限公司 | Electronic high-voltage current transformer |
| CN104992828A (en) * | 2015-08-06 | 2015-10-21 | 河南森源电气股份有限公司 | Low-partial-discharge-value single-structure-based mutual inductor and manufacturing method thereof |
| CN205282252U (en) * | 2015-12-16 | 2016-06-01 | 东莞市昱懋纳米科技有限公司 | Filtering electrical sensor |
-
2016
- 2016-08-24 CN CN201610713433.0A patent/CN106098354B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2541936Y (en) * | 2002-04-23 | 2003-03-26 | 方静 | Dry high voltaeg current transformer |
| JP2004319663A (en) * | 2003-04-15 | 2004-11-11 | Sht Corp Ltd | Current transformer |
| CN201256074Y (en) * | 2008-07-12 | 2009-06-10 | 厦门大一互科技有限公司 | Primary winding connecting terminal component for current transducer |
| CN201294159Y (en) * | 2008-11-05 | 2009-08-19 | 南通海立电子有限公司 | Aluminum electrolytic capacitor terminal |
| CN102468046A (en) * | 2010-11-15 | 2012-05-23 | 大连华亿电力电器有限公司 | Small-size current transformer |
| CN202307496U (en) * | 2011-10-20 | 2012-07-04 | 镇江市丹高电器有限公司 | Electronic high-voltage current transformer |
| CN104992828A (en) * | 2015-08-06 | 2015-10-21 | 河南森源电气股份有限公司 | Low-partial-discharge-value single-structure-based mutual inductor and manufacturing method thereof |
| CN205282252U (en) * | 2015-12-16 | 2016-06-01 | 东莞市昱懋纳米科技有限公司 | Filtering electrical sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593843A (en) * | 2021-07-13 | 2021-11-02 | 三积瑞科技（苏州）有限公司 | Ultra-low-resistance hot-pressing non-coupling double inductor and manufacturing method thereof |
| CN113593843B (en) * | 2021-07-13 | 2024-05-03 | 三积瑞科技（苏州）有限公司 | Ultra-low-resistance hot-pressing non-coupling double inductor and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106098354B (en) | 2019-01-04 |
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