CN104637662B - Precision is adjustable many current ratio transformer - Google Patents
Precision is adjustable many current ratio transformer Download PDFInfo
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- CN104637662B CN104637662B CN201510092745.XA CN201510092745A CN104637662B CN 104637662 B CN104637662 B CN 104637662B CN 201510092745 A CN201510092745 A CN 201510092745A CN 104637662 B CN104637662 B CN 104637662B
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- iron core
- screw rod
- precision
- magnetic conduction
- conduction frame
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000004804 winding Methods 0.000 claims abstract description 14
- 239000000696 magnetic material Substances 0.000 claims description 9
- 230000035699 permeability Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to a kind of precision adjustable many current ratio transformer, this precision is adjustable, and many current ratio transformer mainly includes rectangular magnetic conduction frame, binding post, primary winding and secondary coil；The long limit that described magnetic conduction frame two is relative is respectively an iron core and secondary iron core, and on two above-mentioned iron cores, axle connects an adjusting screw rod respectively；Offer conduit in one end of described screw rod, described conduit extends internally from the perisporium of screw rod and extend out to magnetic conduction frame end along the rotating shaft of screw rod；Primary winding and secondary coil are the most threadingly wrapped on the screw rod of an iron core and secondary iron core, on one binding post of two iron cores that one end of two coils is connected to, the other end stretches out the end of magnetic conduction frame by conduit and is connected on another binding post of two iron cores；This current transformer can realize continuously adjusting of current ratio without folding circuit again, and this current transformer can change self precision continuously simultaneously.
Description
Technical field
The present invention relates to a kind of current transformer, particularly, be a kind of many current ratio current transformers.
Background technology
Current transformer is a kind of common equipment measuring current strength, and common current transformer includes list
Current ratio current transformer, many current ratio current transformers and many iron core current transformers；Single current ratio is mutual
First and second umber of turn of sensor is fixed, and current ratio cannot change, and can only realize a kind of current ratio conversion,
Owing to current ratio is fixed, the range of this transformer is the narrowest；Common many core currents mutual inductance
Utensil has multiple Secondary Winding each with iron core, is realized by the Secondary Winding connecting different magnetic conductivity
The regulation of precision, when actual Adjustment precision, needs repeatedly to disconnect, engage circuit, operates relatively complicated,
Simultaneously because the magnetic conductivity of every kind of iron core is fixed, precision can only adjust fixing several, it is impossible to realizes continuously
Adjust；Organize iron core furthermore, it is necessary to carry, more inconvenience more；And common many current ratio transformer has
The Secondary Winding that many group numbers of turn are different, by connecting different terminals to change current ratio；This mutual inductance
Device cannot realize continuously adjusting equally, and switching current ratio all needs to disconnect, engage circuit every time, expends a large amount of
Time, affect normal power supply；Every time folding circuit, in iron core, magnetic flux will be undergone mutation, easily acceleration around
Put the aging of coil on iron core, shorten the life-span of transformer simultaneously.
Summary of the invention
For the problems referred to above, the present invention provides a kind of precision adjustable many current ratio transformer, this current transformer
Can realize continuously adjusting of current ratio without folding circuit again, this current transformer can be continuous simultaneously
Change self precision, it is possible to adapt to various required precision.
For solving the problems referred to above, the technical solution adopted in the present invention is: many current ratio mutual inductance that this precision is adjustable
Device includes rectangular magnetic conduction frame, binding post, primary winding and secondary coil；Described magnetic conduction frame two
Relative long limit is respectively an iron core and secondary iron core, and on two above-mentioned iron cores, axle connects a tune respectively
Joint screw rod；Two described adjusting screw rods respectively with an iron core and the dead in line of secondary iron core；Described tune
Joint screw rod can be freely rotatable relative to iron core around own torque；Offer in one end of described adjusting screw rod and lead
Spool, described conduit extends internally from the perisporium of adjusting screw rod and extend out to lead along the rotating shaft of adjusting screw rod
Magnet frame end；Primary winding and secondary coil are the most threadingly wrapped in an iron core and the tune of secondary iron core
Joint screw rod on, one end of two coils be connected respectively two iron cores a binding post on, separately
The end of magnetic conduction frame is stretched out by two conduits respectively in one end and correspondence is connected to another of two iron cores
On binding post.
The invention has the beneficial effects as follows: in use the two ends of circuit under test are connected to two of an iron core
On binding post, test instrumentation is connected on two binding posts of secondary iron core；A now iron core and two
Current ratio on secondary iron core is an iron core and the coil ratio of secondary iron core；When needs increase electric current
Than time, rotate the adjusting screw rod on secondary iron core；Secondary coil with the rotation of adjusting screw rod at secondary iron core
Upper winding, now the coil turn on secondary iron core becomes big, and then realizes the increase of current ratio, works as needs
When turning current ratio down, reversely rotate adjusting screw rod；When needing the precision improving transformer, rotate
Adjusting screw rod on iron core；Primary winding is wound around on an iron core with the rotation of adjusting screw rod, this
Coil turn on Shi Yici iron core becomes big, and the number of ampere turns of an iron core becomes big, and the precision of transformer is corresponding
Improving, the number of turn of the adjusting screw rod increase secondary coil on regulation secondary iron core can recover original again
Current ratio；When precision turned down by needs, reverse operating.
Present configuration is simple, easy to carry；Without disconnecting circuit during whole regulation, do not affect electricity
The normal use of line；Corresponding adjusting screw rod only need to be rotated when changing current ratio and precision, simple to operate；
More prominent, the present invention can continuously adjust current ratio and precision.
As preferably, described magnetic conduction frame uses ultracrystallite permeability magnetic material to make；This material has good magnetic
Conductance and good temperature stability, it is possible to the precision being effectively improved transformer the use longevity extending iron core
Life.
As preferably, a minor face of described magnetic conduction frame is provided with precision adjusting mechanism；Described precision is adjusted
Joint mechanism includes a fixed rotating shaft and two adjustable columns being set on this fixed rotating shaft；Described in two
The end face of adjustable column is close to and each adjustable column can be freely rotatable around axle；Described fixed rotating shaft is short with magnetic conduction frame
Limit is parallel；Two described adjustable columns are axially divided into the semicolumn of a pair symmetry, only have in every pair of semicolumn
One semicolumn uses permeability magnetic material to make, permeability magnetic material the semicolumn made is half conducting magnetic column；Needing
Rotate two adjustable columns when wanting degree of regulation, when two adjustable columns half conducting magnetic column just pair time, in magnetic conduction frame
Magnetic conduction cross section maximum, now the precision of transformer is the highest；Along with adjustable column rotates against around fixed rotating shaft,
Half conducting magnetic column just to area be gradually reduced, now the magnetic conduction cross section in magnetic conduction frame is gradually reduced, i.e. mutual inductance
The precision of device is gradually reduced.
As preferably, the perisporium of described secondary iron core offers vertical bar shape lines, described vertical bar shape lines
Parallel with the axis of secondary iron core；This lines can reduce the friction of coil and iron core perisporium, in order to line
Circle is wrapped on iron core under the rotation of adjusting screw rod and can slide along iron core easily.
Accompanying drawing explanation
Fig. 1 is the structural representation of this precision adjustable many current ratio one embodiment of transformer.
Fig. 2 is the amplification perspective view of precision adjusting mechanism in embodiment illustrated in fig. 1.
Fig. 3 is the structure for amplifying schematic diagram of adjusting screw rod in embodiment illustrated in fig. 1.
Detailed description of the invention
Embodiment
In the embodiment shown in Fig. 1 to Fig. 3, this precision is adjustable, and many current ratio transformer includes rectangular
Magnetic conduction frame 6, binding post 4, primary winding 11 and secondary coil 21；Described magnetic conduction frame 6 uses ultra micro
Brilliant permeability magnetic material is made；The long limit that described magnetic conduction frame 6 two is relative is respectively an iron core 1 and secondary iron
Core 2, is respectively fixed with two binding posts 4 on an iron core 1 and secondary iron core 2；At two above-mentioned iron
On core, axle connects an adjusting screw rod 5 the most respectively；Two described adjusting screw rods 5 respectively with an iron core 1 and two
The dead in line of secondary iron core 2；Described adjusting screw rod 5 can be freely rotatable relative to iron core around own torque；
Offer conduit 51 in one end of described adjusting screw rod 5, described conduit 51 is from the week of adjusting screw rod 5
Wall extends internally and extend out to magnetic conduction frame 6 end along the rotating shaft of adjusting screw rod 5, and in Fig. 3, dotted line is for adjusting
The axis of joint screw rod 5, Fig. 3 illustrate only the conduit 51 part in adjusting screw rod 5, conduit
51 parts extended in magnetic conduction frame 6 are able to observe that in FIG；Perisporium at described secondary iron core 2
On be further opened with vertical bar shape lines, described vertical bar shape lines is parallel with the axis of secondary iron core 2；Primary line
Circle 11 and secondary coil 21 are the most threadingly wrapped in the adjusting screw rod 5 of an iron core 1 and secondary iron core 2
On, one end of two coils be connected respectively two iron cores a binding post 4 on, the other end
Stretch out the end of magnetic conduction frame 6 by two conduits 51 respectively and correspondence is connected to another of two iron cores
On binding post 4；As shown in the parts that dotted line frame in Fig. 1 surrounds, at a minor face of described magnetic conduction frame 6
On precision adjusting mechanism 3 is installed；Fix as in figure 2 it is shown, described precision adjusting mechanism 3 includes one
Rotating shaft 32 and two adjustable columns 31 being set on this fixed rotating shaft 32, for ease of observing, two regulations
Distance between post 31 is the biggest, and its actual range is as shown in Figure 1；Two described adjustable columns 31
End face is close to and each adjustable column 31 can be freely rotatable around axle；Described fixed rotating shaft 32 is short with magnetic conduction frame 6
Limit is parallel；Two described adjustable columns 31 are axially divided into the semicolumn of a pair symmetry, in every pair of semicolumn only
Have a semicolumn to use permeability magnetic material to make, permeability magnetic material the semicolumn made is half conducting magnetic column 311.
In use the two ends of circuit under test are connected on two binding posts 4 of an iron core 1, will test
Instrument is connected on two binding posts 4 of secondary iron core 2；Now on an iron core 1 and secondary iron core 2
Current ratio be an iron core 1 and the coil ratio of secondary iron core 2；When needs increase current ratio,
Rotate the adjusting screw rod 5 on secondary iron core 2；Along with the rotation of adjusting screw rod 5, the circle of secondary coil 21
Number is gradually increased, and the coil of increase constantly moves along screw thread, and when coil is too much, unnecessary coil twines
On secondary iron core 2；Owing to the perisporium of secondary coil 21 offers vertical bar shape lines, this lines can
Effectively reducing the frictional force of coil and secondary iron core 2, this makes the secondary coil 21 can be at secondary iron core 2
Upper easily slip, effectively prevents the coil accumulation because the number of turn too much causes, entanglement；Along with secondary iron core 2
On coil turn increase, the current ratio of this transformer increases；When current ratio turned down by needs, reversely revolve
Turn adjusting screw rod 5；When needing the precision changing transformer, relatively rotate two adjustable columns 31；
When two adjustable columns 31 half conducting magnetic column 311 just pair time, the magnetic conduction cross section in magnetic conduction frame 6 is maximum, magnetic conduction
Flux change in frame 6 is maximum, and now the precision of transformer is the highest；If desired the precision of transformer is reduced,
Rotating two adjustable columns 31 makes two and half conducting magnetic columns 311 misplace, along with adjustable column 31 is around fixed rotating shaft 32
Rotate against, half conducting magnetic column 311 just to area be gradually reduced, the now magnetic conduction cross section in magnetic conduction frame 6
Be gradually reduced, i.e. the precision of transformer is gradually reduced；When precision heightened by needs, reverse operating；
The precision that can be realized under the conditions of fixed current ratio by rotation adjustable column 31 is regulated, and i.e. regulates process in precision
In, the current ratio of transformer does not changes, it is simple to staff analyzes fault；Additionally, also have
A kind of method can be with degree of regulation: rotate the adjusting screw rod 5 on an iron core 1；Primary winding 11 is with tune
The rotation of joint screw rod 5 is wound around on an iron core 1, and the coil turn on an iron core 1 becomes big, once
The number of ampere turns of iron core 1 becomes big, and the precision of transformer improves accordingly, again the tune on regulation secondary iron core 2
Joint screw rod 5 can recover original current ratio；When precision turned down by needs, reverse operating.
Present configuration is simple, easy to carry；Without disconnecting circuit during whole regulation, do not affect electricity
The normal use of line；Corresponding adjusting screw rod 5 and adjustable column 31 only need to be rotated when changing current ratio and precision,
Simple to operate；More prominent, the present invention can continuously adjust current ratio and precision without changing transformer.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (2)
1. precision adjustable many current ratio transformer, this precision is adjustable, and many current ratio transformer includes rectangular
Magnetic conduction frame (6), binding post (4), primary winding (11) and secondary coil (21)；Described magnetic conduction frame (6) two is relative
Long limit be respectively an iron core (1) and secondary iron core (2), it is characterised in that: on two above-mentioned iron cores respectively
Axle connects an adjusting screw rod (5)；Two described adjusting screw rods (5) respectively with an iron core (1) and secondary iron core (2)
Dead in line；Described adjusting screw rod (5) can be freely rotatable relative to iron core around own torque；At described regulation spiral shell
One end of bar (5) offers conduit (51), and described conduit (51) extends internally and edge from the perisporium of adjusting screw rod
The rotating shaft of adjusting screw rod extend out to magnetic conduction frame (6) end；Primary winding (11) and secondary coil (21) are the most threadingly
Being wrapped on the adjusting screw rod (5) of an iron core (1) and secondary iron core (2), one end of two coils correspondence respectively is even
Being connected on a binding post (4) of two iron cores, the other end stretches out magnetic conduction frame (6) by two conduits (51) respectively
End and corresponding be connected on another binding post (4) of two iron cores；
Described magnetic conduction frame (6) uses ultracrystallite permeability magnetic material to make；
A minor face of described magnetic conduction frame (6) is provided with precision adjusting mechanism (3)；Described precision adjusting mechanism (3)
Include a fixed rotating shaft (32) and two adjustable columns (31) being set on this fixed rotating shaft (32)；Described in two
The end face of adjustable column (31) is close to and each adjustable column (31) can be freely rotatable around fixed rotating shaft (32)；Described fixed rotating shaft
(32) parallel with another minor face of magnetic conduction frame (6)；Two described adjustable columns (31) are axially divided into a pair symmetry respectively
Semicolumn, every pair of semicolumn only has semicolumn and uses permeability magnetic material to make, permeability magnetic material make
Semicolumn is half conducting magnetic column (311)；The number of turn of secondary coil (21) is more than the number of turn of primary winding (11).
Precision the most according to claim 1 is adjustable many current ratio transformer, it is characterised in that: described two
Offering vertical bar shape lines on the perisporium of secondary iron core (2), described vertical bar shape lines is flat with the axis of secondary iron core (2)
OK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092745.XA CN104637662B (en) | 2015-03-02 | 2015-03-02 | Precision is adjustable many current ratio transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092745.XA CN104637662B (en) | 2015-03-02 | 2015-03-02 | Precision is adjustable many current ratio transformer |
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| Publication Number | Publication Date |
|---|---|
| CN104637662A CN104637662A (en) | 2015-05-20 |
| CN104637662B true CN104637662B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510092745.XA Expired - Fee Related CN104637662B (en) | 2015-03-02 | 2015-03-02 | Precision is adjustable many current ratio transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110098034B (en) * | 2018-01-31 | 2024-02-20 | 宁波方太厨具有限公司 | Rotary power supply structure and flip type cleaning machine with same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591711A (en) * | 2003-08-30 | 2005-03-09 | 薛建仁 | Rotary iron cored type adjustable reactor |
| CN102306533B (en) * | 2011-05-20 | 2012-09-19 | 中国科学院长春光学精密机械与物理研究所 | High-power adjustable inductor |
| CN102709034A (en) * | 2012-01-04 | 2012-10-03 | 吴江市东泰电力特种开关有限公司 | On-load continuous transformer |
| CN202678085U (en) * | 2012-04-15 | 2013-01-16 | 河南省电力公司南阳供电公司 | Adjustable transformation ratio type current transformer |
| CN102623160A (en) * | 2012-05-07 | 2012-08-01 | 安徽互感器有限公司 | Epoxy resin poured insulated totally-enclosed current transformer of 35kV and below |
| CN204375557U (en) * | 2015-03-02 | 2015-06-03 | 周午贤 | Precision is adjustable, and multiple current compares instrument transformer |
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| CN104637662A (en) | 2015-05-20 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Inventor after: Lin Hang Inventor before: Zhou Wuxian |
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Effective date of registration: 20160803 Address after: 317699, room 1, unit 30, Shijing District, Yucheng street, Taizhou, Zhejiang, Yuhuan County 202, China Applicant after: Lin Hang Address before: Xi Keng Zhen Nan Keng Yang Cun Wencheng County of Wenzhou City, Zhejiang province 325300 Applicant before: Zhou Wuxian |
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| CB03 | Change of inventor or designer information |
Inventor after: Niu Yuanli Inventor after: Wang Xin Inventor after: Lei Baoming Inventor after: Duan Shaohui Inventor after: Wang Zhenhua Inventor after: Chen Weihua Inventor after: Li Qiang Inventor after: Ma Zhiqiang Inventor after: Cang Haiyang Inventor after: Liu Wei Inventor after: Tan Youjun Inventor after: Yang Zeng Inventor before: Lin Hang |
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Effective date of registration: 20171128 Address after: 100032 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee after: ANYANG POWER SUPPLY COMPANY, STATE GRID HENAN ELECTRIC POWER CO., LTD. Patentee after: State Grid Corporation of China Address before: 317699, room 1, unit 30, Shijing District, Yucheng street, Taizhou, Zhejiang, Yuhuan County 202, China Patentee before: Lin Hang |
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Granted publication date: 20160824 Termination date: 20180302 |
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