CN104502664B - Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof - Google Patents
Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof Download PDFInfo
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- CN104502664B CN104502664B CN201410649653.2A CN201410649653A CN104502664B CN 104502664 B CN104502664 B CN 104502664B CN 201410649653 A CN201410649653 A CN 201410649653A CN 104502664 B CN104502664 B CN 104502664B
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Abstract
The invention discloses a low-resistance non-inductive self-integration Rogowski coil integration resistor and a manufacturing method thereof. The low-resistance non-inductive self-integration Rogowski coil integration resistor comprises a backflow device and a first-end matching resistor arranged in the backflow device, wherein the backflow device comprises a cylinder-shaped metal support, the outer surface of the metal support is provided with a super-thin insulation layer, the outer surface of the insulation layer is provided with a metal spraying layer, the outer surface of the backflow device is provided with a metal shielding casing, the backflow device and the metal shielding casing are concentrically arranged, an air insulation layer is arranged between the backflow device and the metal shielding casing, one end of the metal shielding casing is equipped with a cable head, the other end of the metal shielding casing is connected with a shielding casing of a Rogowski coil, the first-end matching resistor is arranged in the metal support, one end of the first-end matching resistor is connected with the front end of the metal support through scolding tin, and the other end of the first-end matching resistor is connected with an inner core of the cable head. The outer surface of the backflow device is provided with the metal shielding casing, and the backflow device and the metal shielding casing are concentrically arranged, through the metal shielding casing, influence of an external electromagnetic field on output signals can be reduced, and accuracy of the output signals is improved.
Description
Technical field
The invention belongs to high power pulse fields of measurement, is related to for measuring steep-sided pulse forward position (ns levels), amplitude (hundred
KA) low resistance of pulse current is noninductive from integration Luo-coil integrating resistor and its manufacture method.
Background technology
As the high speed development of Pulse Power Techniques, energy storage technology are stepped up, steep-sided pulse forward position, the electric arteries and veins of amplitude
Punching has obtained increasingly being widely applied.The most frequently used mode of measurement current impulse is diverter (Shunt) and Luo-coil
(Rogowski Coil)。
The principle of diverter is that voltage drop is produced when pulse high current flows through a noninductive resistance, using measure this
The voltage waveform of resistance can be obtained by the current waveform of resistance.But the resistance of reality is difficult to accomplish noninductive, can only subtract as far as possible
Small inductor, if the inductance of diverter is not little enough, then pressure drop when flowing through steep current impulse on inductance can be very big, voltage
Waveform produces distortion, affects measurement result.Additionally, if tested current amplitude is very high, the heat-sinking capability of diverter is (because resistance
Heating) and mechanical strength (because of electromagnetic force impact) be required for considering.
The principle of Luo-coil is the principle using Faraday law of electromagnetic induction and circuital law, by a wire
(generally with insulating barrier) uniform winding is become using tested electric current on a ring skeleton centered on tested current path
The electromotive force of the wire two ends sensing of coil winding during change completes the detection to electric current, due to induced electromotive force and tested electric current
Differential is directly proportional, so needing to add integral element.It is different using integral principle, Luo-coil be divided into from integration Luo-coil and
Outer integration Luo-coil.It is that wire two ends are directly connected to a small resistor to measure from integration Luo-coil, this method
Measurement that is simple and being relatively adapted to high-frequency signal, so relatively broad in fast pulse fields of measurement application.
For steep-sided pulse forward position (ns levels), amplitude (hundred kA) impulse current measurement, its frequency response has a lot
Influence factor, such as coil rack, winding, material and integrating resistor etc..But when measured signal frequency is sufficiently high, coil distribution
The stray inductance of electric capacity and integrating resistor itself, the impact of electric capacity gradually can increase.If suitable method can not be taken to suppress
The impact of distributed constant, output waveform will produce larger distortion.For the coil of measurement ns level current signals, generally
More sparse winding is adopted to reduce the distribution capacity between winding, while using low sense or noninductive integrating resistor.If quilt
Survey electric current is less, can reduce the impact that stray inductance is brought using the larger low sensing resistor of resistance value ratio, such as multiple resistance
It is in parallel.If tested electric current is larger, need from electric resistance structure to start with reduction stray inductance, this integrating resistor is generally adopted back
Stream mode reduces own inductance, such as coaxial integrating resistor.
The content of the invention
For drawbacks described above or deficiency, it is an object of the invention to provide low resistance is noninductive from integration Luo-coil integration electricity
Resistance and its manufacture method so that the resistance has minimum stray inductance and electric capacity such that it is able to possess Luo-coil higher
Upper cut-off frequency and minimum wave distortion.
To reach object above, the technical scheme is that：
A kind of low resistance is noninductive to integrate Luo-coil integrating resistor certainly, including：Reflux and it is arranged at reflux
Interior head end build-out resistor, wherein, reflux includes that the metal of cylindrical tube shape is supported, and the outer surface that metal is supported is provided with absolutely
Edge layer, the outer surface of insulating barrier are provided with gilding layer；
Reflux outer surface is provided with metal shielding, and reflux is arranged concentrically with metal shielding, and the dress that flows back
Put and air insulating layer is provided between metal shielding, one end of metal shielding is provided with end, metal shielding
The other end is opened wide；
Head end build-out resistor is arranged at metal and supports interior, and head end build-out resistor one end supports front end with metal by scolding tin
Connection, the other end are connected with end.
Lead-out wire is connected with the gilding layer and scolding tin.
The end stretches into metal shielding, and contacts with gilding layer.
The insulating barrier is metal oxide layer or insulating lacquer layer.
The gilding layer makes outer conductor structure using metal spraying technique.
A kind of low resistance is noninductive from integration Luo-coil integrating resistor manufacture method, comprises the following steps：
1), according to preset requirement, make cylindrical tube shape metallic object and support for metal；
2), the outside supported in metal arranges insulating barrier, and the position of the reserved gilding layer in junction supported in metal；
3), after, using ion sputtering instrument or gold spraying instrument to plate last layer gilding layer as outer conductor on the insulating layer, formed back
Stream device；
4) head end build-out resistor, metal shielding and end are installed on reflux, low resistance is obtained noninductive certainly
Integration Luo-coil integrating resistor.
The step 2) in insulating barrier make oxide-film by chemical oxidization method or galvanoplastic.
The step 2) in insulating barrier formed by brushing insullac.
The gilding layer is using gold, silver or copper metal material.
The Standard resistance range of the head end build-out resistor is identical with signal output cable resistance.
Compared with the prior art, beneficial effects of the present invention are：
The invention provides a kind of low resistance is noninductive from integration Luo-coil integrating resistor, by supporting successively in metal
Insulating barrier and gilding layer are set, reflux is formed, and in Luo-coil lead-out wire by signal loading to integrating resistor, due to
Gilding layer is very thin, so the inductance very little of the coaxial resistance so that the resistance of integrating resistor is more uniform and stable；Further, since
Reflux outer surface is provided with metal shielding, and reflux is arranged concentrically with metal shielding, therefore, by metallic shield
Shell, can reduce impact of the external electromagnetic field to output signal, improve the accuracy of output signal.
Present invention also offers a kind of low resistance is noninductive from integration Luo-coil integrating resistor manufacture method：
1st, the present invention adopts galvanoplastic or method for distinguishing to produce oxide layer as the insulating barrier between internal and external conductor, can make
The resistance for obtaining integrating resistor is more uniform and stable, while inductance is minimum；
2nd, in the present invention, the outer conductor of integrating resistor is made using the method for metal spraying, resistance can be caused more uniform,
The impact of resistance can be not in contact with the junction with inner wire；
3rd, by the present invention in that using shielding case, impact of the external electromagnetic field to output signal can be reduced.
Description of the drawings
Fig. 1 is that low resistance of the present invention is noninductive from integration Luo-coil integrating resistor structural representation；
Fig. 2 is that low resistance of the present invention is noninductive from the overall structure figure for integrating Luo-coil integrating resistor measuring system.
In figure, 1 is lead-out wire, and 2 is scolding tin, and 3 is head end build-out resistor, and 4 support for metal, and 5 is insulating barrier, and 6 is metal spraying
Layer, 7 is end, and 8 is metal shielding, and 1-1 is Luo-coil, and 2-1 is that low resistance is noninductive from integration Luo-coil integration electricity
Resistance, 3-1 is coaxial cable, and 4-1 is oscillograph.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail.
As shown in figure 1, the invention provides a kind of low resistance it is noninductive from integration Luo-coil integrating resistor, including：Backflow
Device and the head end build-out resistor 3 being arranged in reflux, wherein, reflux includes that the metal of cylindrical tube shape supports 4,
Metal supports 4 outer surface to be provided with insulating barrier 5, and the outer surface of insulating barrier 5 is provided with gilding layer 6；Gilding layer 6 adopts metal spraying work
Skill makes outer conductor structure.
Reflux outer surface is provided with metal shielding 8, and reflux is arranged concentrically with metal shielding 8, and flows back
Air insulating layer is provided between device and metal shielding 8, one end of metal shielding 8 is provided with end 7, metallic shield
The other end of shell 8 is opened wide；And end 7 stretches into metal shielding 8, and contact with gilding layer 6.
Head end build-out resistor 3 is arranged at metal and supports in 4, and 3 one end of head end build-out resistor is supported with metal by scolding tin 2
4 front ends connect, and the other end is connected with end 7, and lead-out wire 1 is connected with gilding layer 6 and scolding tin.
In this law invention, insulating barrier 5 is metal oxide layer, the method that specifically can use chemical oxidation, or plating.When
So can also one layer of insulation film of brush last layer insullac or covering.Notice that junction needs to leave space, so as to gilding layer
Connection.
Present invention also offers a kind of noninductive integration Luo-coil integrating resistor manufacture method certainly of low resistance, including following step
Suddenly：
1), according to preset requirement, it is that metal supports 4 to make cylindrical tube shape metallic object；
2), support 4 outside that insulating barrier 5 is set in metal, and support 4 junction to reserve gilding layer 6 in metal
Oxide-film is made by chemical oxidization method or galvanoplastic in position, the insulating barrier 5, or forms insullac by brushing insullac
Layer.
3), after ion sputtering instrument or gold spraying instrument plating last layer gilding layer 6, are used on insulating barrier 5 as outer conductor, formed
Reflux；The gilding layer 6 adopts gold, silver or copper metal material.
4) head end build-out resistor 3, metal shielding 8 and end 7 are installed on reflux, obtain low resistance without
From integration Luo-coil integrating resistor, the Standard resistance range of the head end build-out resistor 3 is identical with signal output cable resistance for sense.
The present invention the course of work and principle be：
When pulse high current or electronic beam current pass through the Luo-coil shown in Fig. 2, electromotive force can be induced in coil, be led to
Cross integrating resistor and flow through secondary current, while voltage drop is also had on integrating resistor.The voltage drop can be by integrating resistor
End be delivered in oscillograph.Due to the integrating resistor inductance it is minimum, so remaining able at high frequencies to be regarded as pure
Resistance, it is almost consistent with primary current waveform by the current waveform of the resistance, distort minimum.Gilding layer and metal are supported simultaneously
The loop resistance of composition is less, about from 0.01 ohm to 1 ohm, can easily measure tens the kilo-amperes even electricity of hundred kilo-amperes
Stream.
Low resistance in the present invention is noninductive from integration Luo-coil integrating resistor test system to be：
As shown in Fig. 2 including Luo-coil 1-1, low resistance is noninductive from integration Luo-coil integrating resistor 2-1, coaxial electrical
Cable 3-1, and oscillograph 4-1, wherein, low resistance is noninductive from the lead-out wire and Roche line for integrating Luo-coil integrating resistor 2-1
Circle 1-1 connections, the integrating resistor 2-1 other ends are connected with oscillograph 4-1 by coaxial cable 3-1, and Luo-coil lead-out wire will be believed
Number it is loaded on integrating resistor, theirs connects through scolding tin or the connection of other electrically conducting manner.Wherein inner wire and gilding layer
Constitute reflux, due to gilding layer it is very thin, so the inductance very little of this coaxial resistance.
Claims (10)
1. a kind of low resistance is noninductive from integration Luo-coil integrating resistor, it is characterised in that include：Reflux and it is arranged at
Head end build-out resistor (3) in reflux, wherein, reflux includes that the metal of cylindrical tube shape supports (4), and metal is supported
(4) outer surface is provided with insulating barrier (5), and the outer surface of insulating barrier (5) is provided with gilding layer (6)；
Reflux outer surface is provided with metal shielding (8), and reflux is arranged concentrically with metal shielding (8), and flows back
Air insulating layer is provided between device and metal shielding (8), one end of metal shielding (8) is provided with end (7), gold
The other end of category shielding case (8) is opened wide；
Head end build-out resistor (3) is arranged at metal and supports in (4), and head end build-out resistor (3) one end passes through scolding tin (2) and metal
The connection of (4) front end, the other end is supported to be connected with end (7).
2. low resistance according to claim 1 is noninductive from integration Luo-coil integrating resistor, it is characterised in that the metal spraying
Lead-out wire (1) is connected with layer (6) and scolding tin.
3. low resistance according to claim 1 is noninductive from integration Luo-coil integrating resistor, it is characterised in that the cable
Head (7) stretches into metal shielding (8), and contacts with gilding layer (6).
4. low resistance according to claim 1 is noninductive from integration Luo-coil integrating resistor, it is characterised in that the insulation
Layer (5) is metal oxide layer or insulating lacquer layer.
5. low resistance according to claim 1 is noninductive from integration Luo-coil integrating resistor, it is characterised in that the metal spraying
Layer (6) makes outer conductor structure using metal spraying technique.
6. a kind of noninductive from integration Luo-coil integrating resistor manufacture method, its feature based on the low resistance described in claim 1
It is to comprise the following steps：
1), according to preset requirement, it is that metal supports (4) to make cylindrical tube shape metallic object；
2), support the outside of (4) that insulating barrier (5) is set in metal, and the reserved gilding layer in the junction of (4) is supported in metal
(6) position；
3), after, using ion sputtering instrument or gold spraying instrument plating last layer gilding layer (6) as outer conductor on insulating barrier (5), formed
Reflux；
4) head end build-out resistor (3), metal shielding (8) and end (7) are installed on reflux, low resistance is obtained
Noninductive integration Luo-coil integrating resistor certainly.
7. low resistance according to claim 6 is noninductive from integration Luo-coil integrating resistor manufacture method, it is characterised in that
The step 2) in insulating barrier (5) make oxide-film by chemical oxidization method or galvanoplastic.
8. low resistance according to claim 6 is noninductive from integration Luo-coil integrating resistor manufacture method, it is characterised in that
The step 2) in insulating barrier (5) formed by brushing insullac.
9. low resistance according to claim 6 is noninductive from integration Luo-coil integrating resistor manufacture method, it is characterised in that
The gilding layer (6) is using gold, silver or copper metal material.
10. low resistance according to claim 6 is noninductive from integration Luo-coil integrating resistor manufacture method, and its feature exists
In the Standard resistance range of the head end build-out resistor (3) is identical with signal output cable resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649653.2A CN104502664B (en) | 2014-11-14 | 2014-11-14 | Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649653.2A CN104502664B (en) | 2014-11-14 | 2014-11-14 | Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN104502664A CN104502664A (en) | 2015-04-08 |
| CN104502664B true CN104502664B (en) | 2017-04-26 |
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| CN106154013B (en) * | 2016-06-17 | 2018-12-04 | 西安交通大学 | A kind of compound Rogowski coil integrating resistor and its manufacturing method |
| CN113917214B (en) * | 2021-09-22 | 2023-10-27 | 中国船舶工业系统工程研究院 | Self-integration Rogowski coil disc-shaped integration resistor and manufacturing method thereof |
| CN115436680B (en) * | 2022-09-30 | 2024-08-16 | 西北核技术研究所 | Small-resistance signal resistor for self-integration rogowski coil |
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| JP2013029349A (en) * | 2011-07-27 | 2013-02-07 | Central Research Institute Of Electric Power Industry | Impulse current detection device |
| CN103884899B (en) * | 2014-03-12 | 2016-03-30 | 西安交通大学 | A kind of Luo-coil measured for big current fast pulse |
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