CN207946463U - A kind of removable noninductive current divider of high-precision fast-response - Google Patents
A kind of removable noninductive current divider of high-precision fast-response Download PDFInfo
- Publication number
- CN207946463U CN207946463U CN201820305741.4U CN201820305741U CN207946463U CN 207946463 U CN207946463 U CN 207946463U CN 201820305741 U CN201820305741 U CN 201820305741U CN 207946463 U CN207946463 U CN 207946463U
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- Prior art keywords
- metallic conduction
- conduction disk
- disk
- circular hole
- removable
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- 230000004044 response Effects 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- 239000012212 insulator Substances 0.000 claims abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 11
- 230000036632 reaction speed Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 210000002683 foot Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model belongs to field of current measurement, is related to a kind of removable noninductive current divider of high-precision fast-response.A kind of removable noninductive current divider of high-precision fast-response, including metallic conduction disk, coaxial connector, metal catheter, tail end connector, insulator foot and insulating sheath.Metallic conduction disk A, metallic conduction disk B, metallic conduction disk C and metallic conduction disk D are sequentially fixed on insulator foot；The circular hole of metallic conduction disk A corresponds to circular hole with metallic conduction disk C and is connected by metal catheter, when metal catheter passes through metallic conduction disk B, is insulated by insulating sheath circular hole corresponding with metallic conduction disk B；Metallic conduction disk A connects a metal catheter at interval of a circular hole.The utility model has convenient for disassembly and assembly, and reaction speed is fast, high certainty of measurement, can be applied to measure high frequency high current, in addition, the device is easy to load and unload, flexible structure is variable, and resistance value is adjustable, and measurement range also has very big expansion compared with typical measuring arrangements.
Description
Technical field
The utility model belongs to field of current measurement, is related to a kind of removable noninductive current divider of high-precision fast-response.
Background technology
With the continuous development of electrical subject, more and more electrical technologies are able to get application in reality produces.Electricity
The measuring technique of parameter is increasingly taken seriously, especially in Super-Current Measurement field.The fault current that breaker is cut-off, pulse work(
Electric current etc. in rate has the characteristics that current duration is short, peak value is big and frequency variation is fast.Traditional measuring device, such as Roche
Deficiency during the measuring apparatus such as coil, coaxial shunt, current clamp measure at the scene gradually displays.
Coaxial shunt reaction speed up to nanosecond, but due to fever and kelvin effect problem application be restricted.Sieve
Family name's coil, using non-contact measurement, DC component influence of the measurement accuracy by short circuit current.Commercial current clamp measurement range
It is limited by manufacturer's specification grade, and expensive, applicable object is single.
In the ideal case, current divider can regard Ω grades of low resistances of a m as, but in practical measurement, due to there is stray inductance
And capacitance, pF grades of capacitance capacitive reactance is very big, and compared with the reactance value after parallel resistance inductive branch, capacitive branch can neglect
Slightly, the voltage at current divider both ends is：
In addition, due to the presence of stray inductance, there is mutual inductance between current divider and other current loops, although these mutual inductance value
May be H grades in μ, but in the case where di (t)/dt is larger, mutual inductance may cause tens volts of even several hectovolts on current divider
Voltage.Therefore, current divider inductance value should be minimized when carrying out diverter designs, the method reduction of generally use shielding has load
Influence of the circuit to current divider.Traditional coaxial shunt, outside has shroud sleeve that can effectively reduce extraneous interference, but can produce
Raw apparent stress effect and fuel factor, can only measure smaller electric current, and the kelvin effect of the bigger coaxial shunt of frequency is brighter
It is aobvious.Disc Shunt electric current makes mutual inductance value reduce from disc centre Radial Flow, can effectively reduce the extraneous shadow for having and carrying circuit
It rings.In conjunction with the advantages of the two, diversion structure is improved, its range can be made to reach kA ranks.
Utility model content
The utility model proposes the removable noninductive current divider of high-precision fast-response, using holohedral symmetry formula structure, without helping to change
Design, reaction speed is fast, and uses hollow metal conduit, and kelvin effect and heat dissipation problem are effectively solved.
The technical solution of the utility model：
A kind of removable noninductive current divider of high-precision fast-response, including metallic conduction disk A, metallic conduction disk B, metallic conduction
Disk C, metallic conduction disk D, coaxial connector 1, metal catheter 3, tail end connector 4, insulator foot 5 and insulating sheath 7.
The centrally disposed circular holes of metallic conduction disk A；It is R1, R2 in radius using the metallic conduction centers disk A as origin
Circular hole is arranged in position, wherein R2>R1, circular hole spacing is identical and often circle circular hole number is even number；The metallic conduction disk B,
Metallic conduction disk C, metallic conduction disk D, the shape of metallic conduction disk tetra- conductive plates of A are identical, can be interchangeable between each other.
It is connected using coaxial connector 1 between metallic conduction disk A and metallic conduction disk B, metallic conduction disk A connects with coaxial
The outer layer connection of device 1 is connect, metallic conduction disk B connect with the internal layer of coaxial connector 1, realizes metallic conduction disk A and metal is led
Electroplax B electric insulations.
The center hole of the two is passed through electrically to connect by tail end connector 4 between metallic conduction disk C and metallic conduction disk D
It connects；Metallic conduction disk A, metallic conduction disk B, metallic conduction disk C and the metallic conduction disk D is sequentially fixed at insulator foot 5
On.
The circular hole and metallic conduction disk C of metallic conduction disk A corresponds to circular hole and is connected by metal catheter 3, and metal catheter 3 passes through
When metallic conduction disk B, insulated by the circular hole corresponding with metallic conduction disk B of insulating sheath 7；Metallic conduction disk A is at interval of one
A circular hole connects a metal catheter 3.
The remaining circular hole and metallic conduction disk D of the metallic conduction disk B corresponds to circular hole and is connected by metal catheter 3, gold
When belonging to conduit 3 across metallic conduction disk C, insulated by the circular hole corresponding with metallic conduction disk C of insulating sheath 7.
The metal catheter 3 is hollow-core construction, realizes homogeneous current distribution, alleviates kelvin effect；Hollow-core construction
Increase the opposite heat dissipation area of conductor；3 both ends of metal catheter use reverse thread structure, and both ends pass through with metallic conduction disk
When threaded connection, it can realize that metallic conduction disk connected to it installs or removes simultaneously.
The coaxial connector 1 is three-decker, and outer layer and inner core are conductive material, and middle layer uses insulating materials；
Tail end connector 4 is made of conductive material.
Electric current flows through the center of metallic conduction disk A by the outer layer of coaxial connector 1, then by radially flowing into and metal
The metal catheter 3 of conductive plate A connections, electric current is by 3 centers radial inflow metallic conduction disk C of metal catheter；Electric current is connected through tail end
Device 4 reaches metallic conduction disk D by metallic conduction disk C；Electric current radially flows to its edge by metallic conduction disk D, is led through metal
Pipe 3 flows to metallic conduction disk B, its center is radially left to by the edges metallic conduction disk B；Inner laminar flow of the electric current through coaxial connector 1
Journey goes out.
Current divider needs to consider following factor in design：The resistance value R of metal catheter 30, step response time T, metal leads
The resistance value R of pipe 30It can be calculated by following formula：
Wherein, ρ is the resistivity of material, and l is low resistance drum length, and a is low resistance barrel bore, and h is that cylinder is thick
Degree；
Step response time T：
T=μ h2/6ρ (3)
Wherein, μ is the magnetic conductivity of low resistance material, is similar to space permeability, μ=μ0=4 π × 10-7H.m-1。
Further, metallic conduction disk A, metallic conduction disk B, metallic conduction disk C and metallic conduction disk D use aluminium alloy
Material.
Further, metal catheter 3 uses aluminium alloy or brass.
The beneficial effects of the utility model：The utility model have it is convenient for disassembly and assembly, reaction speed is fast, high certainty of measurement, can
Applied to high frequency high current is measured, in addition, the device is easy to load and unload, flexible structure is variable, and resistance value is adjustable, and measurement range is more traditional
Measuring device also has very big expansion.
Description of the drawings
Fig. 1 is removable noninductive current divider installation and layout drawing.
Fig. 2 a are metallic conduction disk A schematic diagrames.
Fig. 2 b are metallic conduction disk B schematic diagrames.
Fig. 3 a are multiple rows of mounting hole conductive metal disk A schematic diagrames.
Fig. 3 b are multiple rows of mounting hole conductive metal disk B schematic diagrames.
Fig. 4 is metal catheter schematic diagram.
In figure, 1 coaxial connector；2 metallic conduction disks；3 metal catheters；4 tail end connectors；5 insulator foots；6 locking screws
It is female；7 insulating sheaths.
Specific implementation mode
Below in conjunction with technical solution and attached drawing, the implementation process of this special utility model is illustrated.
Such as Fig. 1~Fig. 4, metallic conduction disk A, metallic conduction disk B, metallic conduction disk C, metallic conduction disk D are aluminium alloy
Material, diameter 25cm, thickness 4cm.The trepanning of metallic conduction disk center, diameter 4cm.3 screw threads are uniformly opened away from the center positions 8cm
Hole, diameter 1.2cm；3 through-holes are uniformly opened away from the center positions 8cm, diameter 1.3cm, adjacent screw holes and through-hole angle are 60 degree.
One group of hole is reprocessed away from center 10cm, 6 threaded holes, 6 through-holes, diameter 1.2cm, adjacent screw holes and through-hole angle are 30
Degree.When opening first threaded hole, two threaded hole centers and metallic conduction disk center are point-blank in two groups of holes when processing.
For metal catheter 3 using aluminium alloy and two kinds of materials of brass, 3 length of metal catheter is 50cm, outer diameter 1.2cm, tube wall
Reverse thread, reach 0.7cm are attacked in thickness 1cm, both ends.
Metal catheter 3 and metallic conduction disk use the connection type of screw thread.Metallic conduction disk A and metallic conduction disk C is one
Group, metallic conduction disk B and metallic conduction disk D are one group.The metal catheter 3 of connection metallic conduction disk A and metallic conduction disk C passes through
It is insulated using insulating sheath 7 when metallic conduction disk B.The metal catheter 3 for connecting metallic conduction disk B and metallic conduction disk D passes through gold
Identical method is used when belonging to conductive plate C.
It is attached using coaxial connector 1 between metallic conduction disk A and metallic conduction disk B, but metal is led on circuit
Electroplax A and metallic conduction disk B is insulation；Connected using tail end connector 4 between metallic conduction disk C and metallic conduction disk D
It connects.
Claims (8)
1. a kind of removable noninductive current divider of high-precision fast-response, which is characterized in that the removable high-precision fast-response without
Sense current divider includes metallic conduction disk A, metallic conduction disk B, metallic conduction disk C, metallic conduction disk D, coaxial connector (1), gold
Belong to conduit (3), tail end connector (4), insulator foot (5) and insulating sheath (7)；
The centrally disposed circular holes of metallic conduction disk A；Using the metallic conduction centers disk A as origin, in the position that radius is R1, R2
Circular hole is set, wherein R2>R1, circular hole spacing is identical and often circle circular hole number is even number；The metallic conduction disk B, metal
Conductive plate C, metallic conduction disk D, the shape of metallic conduction disk tetra- conductive plates of A are identical, can be interchangeable between each other；
It is connected using coaxial connector (1) between metallic conduction disk A and metallic conduction disk B, metallic conduction disk A and coaxial connector
(1) outer layer connection, metallic conduction disk B are connect with the internal layer of coaxial connector (1), realize metallic conduction disk A and metallic conduction
Disk B electric insulations；The center hole electricity of the two is passed through between metallic conduction disk C and metallic conduction disk D by tail end connector (4)
Gas connects；Metallic conduction disk A, metallic conduction disk B, metallic conduction disk C and the metallic conduction disk D is sequentially fixed at insulation bottom
On seat (5)；
The circular hole and metallic conduction disk C of metallic conduction disk A corresponds to circular hole and is connected by metal catheter (3), and metal catheter (3) passes through
When metallic conduction disk B, insulated by insulating sheath (7) circular hole corresponding with metallic conduction disk B；Metallic conduction disk A at interval of
One circular hole connects a metal catheter (3)；The remaining circular hole and metallic conduction disk D of the metallic conduction disk B corresponds to circular hole
It is connected by metal catheter (3), when metal catheter (3) passes through metallic conduction disk C, passes through insulating sheath (7) and metallic conduction disk C
Corresponding circular hole insulate；
The coaxial connector (1) is three-decker, and outer layer and inner core are conductive material, and middle layer uses insulating materials；Tail
Terminal adapter (4) is made of conductive material.
2. a kind of removable noninductive current divider of high-precision fast-response according to claim 1, which is characterized in that the gold
It is hollow-core construction to belong to conduit (3).
3. a kind of removable noninductive current divider of high-precision fast-response according to claim 1 or 2, which is characterized in that described
Metal catheter (3) both ends use reverse thread structure, when both ends and metallic conduction disk are connected through a screw thread, can realize and its
The metallic conduction disk of connection installs or removes simultaneously.
4. a kind of removable noninductive current divider of high-precision fast-response according to claim 1 or 2, which is characterized in that described
Metal catheter (3) use aluminium alloy or brass.
5. a kind of removable noninductive current divider of high-precision fast-response according to claim 3, which is characterized in that the gold
Belong to conduit (3) and uses aluminium alloy or brass.
6. a kind of removable noninductive current divider of high-precision fast-response according to claim 1,2 or 5, which is characterized in that institute
Metallic conduction disk A, metallic conduction disk B, metallic conduction disk C and the metallic conduction disk D stated uses aluminum alloy materials.
7. a kind of removable noninductive current divider of high-precision fast-response according to claim 3, which is characterized in that the gold
Belong to conductive plate A, metallic conduction disk B, metallic conduction disk C and metallic conduction disk D and uses aluminum alloy materials.
8. a kind of removable noninductive current divider of high-precision fast-response according to claim 4, which is characterized in that the gold
Belong to conductive plate A, metallic conduction disk B, metallic conduction disk C and metallic conduction disk D and uses aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820305741.4U CN207946463U (en) | 2018-03-06 | 2018-03-06 | A kind of removable noninductive current divider of high-precision fast-response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820305741.4U CN207946463U (en) | 2018-03-06 | 2018-03-06 | A kind of removable noninductive current divider of high-precision fast-response |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207946463U true CN207946463U (en) | 2018-10-09 |
Family
ID=63700665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820305741.4U Withdrawn - After Issue CN207946463U (en) | 2018-03-06 | 2018-03-06 | A kind of removable noninductive current divider of high-precision fast-response |
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| Country | Link |
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| CN (1) | CN207946463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169532A (en) * | 2018-03-06 | 2018-06-15 | 大连理工大学 | A kind of removable noninductive current divider of high-precision fast-response |
| CN109884371A (en) * | 2019-03-04 | 2019-06-14 | 华中科技大学 | A kind of heavy-current measuring device of anti-skin effect |
-
2018
- 2018-03-06 CN CN201820305741.4U patent/CN207946463U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169532A (en) * | 2018-03-06 | 2018-06-15 | 大连理工大学 | A kind of removable noninductive current divider of high-precision fast-response |
| CN108169532B (en) * | 2018-03-06 | 2023-12-15 | 大连理工大学 | Detachable high-precision quick-response noninductive shunt |
| CN109884371A (en) * | 2019-03-04 | 2019-06-14 | 华中科技大学 | A kind of heavy-current measuring device of anti-skin effect |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181009 Effective date of abandoning: 20231215 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181009 Effective date of abandoning: 20231215 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |