CN104502664A - 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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- CN104502664A CN104502664A CN201410649653.2A CN201410649653A CN104502664A CN 104502664 A CN104502664 A CN 104502664A CN 201410649653 A CN201410649653 A CN 201410649653A CN 104502664 A CN104502664 A CN 104502664A
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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, relate to for measure steep-sided pulse forward position (ns level), amplitude (hundred kA) pulse current low resistance noninductive from integration Luo-coil integrating resistor and manufacture method thereof.
Background technology
Along with the high speed development of Pulse Power Techniques, the progressively raising of energy storage technology, the electric pulse of steep-sided pulse forward position, amplitude obtains to be applied more and more widely.The mode measuring current impulse the most frequently used is shunt (Shunt) and Luo-coil (Rogowski Coil).
The principle of shunt can produce voltage drop when pulse high current flows through a noninductive resistance, utilizes the voltage waveform measuring this resistance just can obtain the current waveform of resistance.But the resistance of reality is difficult to accomplish noninductive, can only reduce inductance as far as possible, if the inductance of shunt is little not, pressure drop when so flowing through steep current impulse on inductance can be very large, and voltage waveform produces distortion, affects measurement result.In addition, if tested current amplitude is very high, the heat-sinking capability (because resistance heating) of shunt and physical strength (because impact of electromagnetic force) all need to consider.
The principle of Luo-coil is the principle utilizing Faraday's electromagnetic induction law and circuital law, by wire (usually with an insulation course) uniform winding on a ring skeleton centered by tested current path, the electromotive force utilizing the wire two ends of coil winding during tested curent change to respond to completes the detection to electric current, because the differential of induced electromotive force and tested electric current is directly proportional, so need to add integral element.Utilize integral principle different, Luo-coil is divided into from integration Luo-coil and outer integration Luo-coil.Be wire two ends are directly connected a small resistor to measure from integration Luo-coil, this method simply and be relatively applicable to the measurement of high-frequency signal, so comparatively extensive in the application of fast pulse fields of measurement.
For steep-sided pulse forward position (ns level), amplitude (hundred kA) impulse current measurement, its frequency response has a lot of influence factor, as coil rack, winding, material and integrating resistor etc.But when measured signal frequency is enough high, the stray inductance of the stary capacity of coil and integrating resistor itself, the impact of electric capacity can increase gradually.If suitable method can not be taked to suppress the impact of distribution parameter, output waveform will produce larger distortion.For the coil measuring ns level current signal, usually adopt comparatively sparse winding to reduce the distributed capacitance between winding, adopt low sense or noninductive integrating resistor simultaneously.If tested electric current is less, the impact that the low sensing resistor that resistance value ratio can be adopted larger brings to reduce stray inductance, such as multiple resistor coupled in parallel.If tested electric current is comparatively large, then need to start with reduction stray inductance from electric resistance structure, this integrating resistor adopts reflux type to reduce own inductance, such as coaxial integrating resistor usually.
Summary of the invention
For above-mentioned defect or deficiency, the object of the present invention is to provide low resistance noninductive from integration Luo-coil integrating resistor and manufacture method thereof, make this resistance have minimum stray inductance and electric capacity, thus Luo-coil can be made to have higher upper cut-off frequency and minimum wave form distortion.
For reaching above object, technical scheme of the present invention is:
A kind of low resistance is noninductive from integration Luo-coil integrating resistor, comprise: reflux and the head end build-out resistor be arranged in reflux, wherein, reflux comprises the metallic support of cylindrical tube shape, the outside surface of metallic support is provided with insulation course, and the outside surface of insulation course is provided with gilding layer;
Reflux outside surface is provided with metal shielding, and reflux is arranged with metal shielding is concentric, and is provided with air insulating layer between reflux and metal shielding, and one end of metal shielding is provided with cable end, and the other end of metal shielding opens wide;
Head end build-out resistor is arranged in metallic support, and head end build-out resistor one end is connected with metallic support front end by scolding tin, and the other end is connected with cable end.
Described gilding layer and scolding tin are connected with extension line.
Described cable end stretches into metal shielding, and contacts with gilding layer.
Described insulation course is metal oxide layer or insulating lacquer layer.
Described gilding layer adopts metal spraying technique to make outer conductor structure.
A kind of low resistance is noninductive from integration Luo-coil integrating resistor manufacture method, comprises the following steps:
1), according to preset requirement, making cylindrical tube shape metallic object is metallic support;
2), at the arranged outside insulation course of metallic support, and the position of gilding layer is reserved in the junction of metallic support;
3) use ion sputtering instrument or gold spraying instrument to plate one deck gilding layer as after outer conductor, on the insulating layer, form reflux;
4), head end build-out resistor, metal shielding, integrating resistor and cable end are installed on reflux, obtain low resistance noninductive from integration Luo-coil integrating resistor.
Described step 2) in insulation course make oxide film by chemical oxidization method or electrochemical plating.
Described step 2) in insulation course formed by brushing insullac.
Described gilding layer is for adopting gold, silver or copper metal material.
The Standard resistance range of described head end build-out resistor is identical with the impedance of signal output cable.
Compared with the prior art, beneficial effect of the present invention is:
The invention provides a kind of low resistance noninductive from integration Luo-coil integrating resistor, by setting gradually insulation course and gilding layer in metallic support, form reflux, and at Luo-coil extension line by signal loading on integrating resistor, because gilding layer is very thin, so the inductance of this coaxial resistance is very little, make the resistance of integrating resistor more uniform and stable; In addition, because reflux outside surface is provided with metal shielding, reflux is arranged with metal shielding is concentric, therefore, by metal shielding, can reduce the impact of external electromagnetic field on output signal, improve the accuracy of output signal.
Present invention also offers a kind of low resistance noninductive from integration Luo-coil integrating resistor manufacture method:
1, the present invention adopts electrochemical plating or method for distinguishing to produce oxide layer as the insulation course between internal and external conductor, and the resistance of integrating resistor can be made more uniform and stable, and inductance is minimum simultaneously;
2, in the present invention, use the method for metal spraying to make the outer conductor of integrating resistor, resistance can be made more even, also can there is no the impact of contact resistance in the junction with inner wire;
3, the present invention is by using shielding case, can reduce the impact of external electromagnetic field on output signal.
Accompanying drawing explanation
Fig. 1 is that low resistance of the present invention is noninductive from integration Luo-coil integrating resistor structural representation;
Fig. 2 is the noninductive one-piece construction figure from integration Luo-coil integrating resistor measuring system of low resistance of the present invention.
In figure, 1 is extension line, and 2 is scolding tin, and 3 is head end build-out resistor, and 4 is metallic support, 5 is insulation course, and 6 is gilding layer, and 7 is cable end, and 8 is metal shielding, 1-1 is Luo-coil, and 2-1 is that low resistance is noninductive from integration Luo-coil integrating resistor, and 3-1 is concentric cable, and 4-1 is oscillograph.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, the invention provides a kind of low resistance noninductive from integration Luo-coil integrating resistor, comprise: reflux and the head end build-out resistor 3 be arranged in reflux, wherein, reflux comprises the metallic support 4 of cylindrical tube shape, the outside surface of metallic support 4 is provided with insulation course 5, and the outside surface of insulation course 5 is provided with gilding layer 6; Gilding layer 6 adopts metal spraying technique to make outer conductor structure.
Reflux outside surface is provided with metal shielding 8, reflux is arranged with metal shielding 8 is concentric, and being provided with air insulating layer between reflux and metal shielding 8, one end of metal shielding 8 is provided with cable end 7, and the other end of metal shielding 8 opens wide; And cable end 7 stretches into metal shielding 8, and contact with gilding layer 6.
Head end build-out resistor 3 is arranged in metallic support 4, and head end build-out resistor 3 one end is connected with metallic support 4 front end by scolding tin 2, and the other end is connected with cable end 7, and gilding layer 6 and scolding tin are connected with extension line 1.
In this law invention, insulation course 5 is metal oxide layer, specifically can use the method for chemical oxidation, or plating.One deck insullac can certainly be brushed or cover one deck insulation film.Notice that junction needs to leave space, so that the connection of gilding layer.
Present invention also offers a kind of low resistance noninductive from integration Luo-coil integrating resistor manufacture method, comprise the following steps:
1), according to preset requirement, making cylindrical tube shape metallic object is metallic support 4;
2), at the arranged outside insulation course 5 of metallic support 4, and reserve the position of gilding layer 6 in the junction of metallic support 4, described insulation course 5 makes oxide film by chemical oxidization method or electrochemical plating, or forms insulating lacquer layer by brushing insullac.
3), use on insulation course 5 ion sputtering instrument or gold spraying instrument plate one deck gilding layer 6 as outer conductor after, formed reflux; Described gilding layer 6 adopts gold, silver or copper metal material.
4), head end build-out resistor 3, metal shielding 8, integrating resistor and cable end 7 are installed on reflux, obtain low resistance noninductive from integration Luo-coil integrating resistor, the Standard resistance range of described head end build-out resistor 3 is identical with the impedance of signal output cable.
The course of work of the present invention and principle are:
When pulse high current or electronic beam current pass through the Luo-coil shown in Fig. 2, electromotive force can be induced in coil, flow through secondary current by integrating resistor, integrating resistor also have voltage drop simultaneously.This voltage drop can be delivered in oscillograph by the cable end on integrating resistor.Because this integrating resistor inductance is minimum, so still can pure resistance be regarded as at high frequencies, almost consistent with primary current waveform by the current waveform of this resistance, distort minimum.The loop resistance of gilding layer and metallic support formation is less simultaneously, about from 0.01 ohm to 1 ohm, easily can measure tens the kilo-amperes even electric current of hundred kilo-amperes.
Low resistance in the present invention is noninductive from integration Luo-coil integrating resistor test macro is:
As shown in Figure 2, comprise Luo-coil 1-1, low resistance is noninductive from integration Luo-coil integrating resistor 2-1, concentric cable 3-1, and oscillograph 4-1, wherein, low resistance is noninductive to be connected with Luo-coil 1-1 from the extension line of integration Luo-coil integrating resistor 2-1, the integrating resistor 2-1 other end is connected with oscillograph 4-1 by concentric cable 3-1, and Luo-coil extension line is by signal loading on integrating resistor, and their connection is connected by scolding tin or other electrically conducting manner.Wherein inner wire and gilding layer form reflux, because gilding layer is very thin, so the inductance of this coaxial resistance is very little.
Claims (10)
1. a low resistance is noninductive from integration Luo-coil integrating resistor, it is characterized in that, comprise: reflux and the head end build-out resistor (3) be arranged in reflux, wherein, reflux comprises the metallic support (4) of cylindrical tube shape, the outside surface of metallic support (4) is provided with insulation course (5), and the outside surface of insulation course (5) is provided with gilding layer (6);
Reflux outside surface is provided with metal shielding (8), reflux is arranged with metal shielding (8) is concentric, and be provided with air insulating layer between reflux and metal shielding (8), one end of metal shielding (8) is provided with cable end (7), and the other end of metal shielding (8) opens wide;
Head end build-out resistor (3) is arranged in metallic support (4), and head end build-out resistor (3) one end is connected with metallic support (4) front end by scolding tin (2), the other end is connected with cable end (7).
2. low resistance according to claim 1 is noninductive is characterized in that from integration Luo-coil integrating resistor, and described gilding layer (6) and scolding tin are connected with extension line (1).
3. low resistance according to claim 1 is noninductive is characterized in that from integration Luo-coil integrating resistor, and described cable end (7) stretches into metal shielding (8), and contacts with gilding layer (6).
4. low resistance according to claim 1 is noninductive is characterized in that from integration Luo-coil integrating resistor, and described insulation course (5) is metal oxide layer or insulating lacquer layer.
5. low resistance according to claim 1 is noninductive is characterized in that from integration Luo-coil integrating resistor, and described gilding layer (6) adopts metal spraying technique to make outer conductor structure.
6. noninductive from an integration Luo-coil integrating resistor manufacture method based on low resistance according to claim 1, it is characterized in that, comprise the following steps:
1), according to preset requirement, making cylindrical tube shape metallic object is metallic support (4);
2), at the arranged outside insulation course (5) of metallic support (4), and the position of gilding layer (6) is reserved in the junction of metallic support (4);
3), insulation course (5) upper use ion sputtering instrument or gold spraying instrument plate one deck gilding layer (6) as outer conductor after, form reflux;
4), head end build-out resistor (3), metal shielding (8), integrating resistor and cable end (7) are installed on reflux, obtain low resistance noninductive from integration Luo-coil integrating resistor.
7. low resistance according to claim 6 is noninductive from integration Luo-coil integrating resistor manufacture method, it is characterized in that, described step 2) in insulation course (5) make oxide film by chemical oxidization method or electrochemical plating.
8. low resistance according to claim 6 is noninductive from integration Luo-coil integrating resistor manufacture method, it is characterized in that, described step 2) in insulation course (5) formed by brushing insullac.
9. low resistance according to claim 6 is noninductive is characterized in that from integration Luo-coil integrating resistor manufacture method, and described gilding layer (6) adopts gold, silver or copper metal material.
10. low resistance according to claim 6 is noninductive is characterized in that from integration Luo-coil integrating resistor manufacture method, and the Standard resistance range of described head end build-out resistor (3) is identical with the impedance of signal output cable.
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| 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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| 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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| CN104502664B CN104502664B (en) | 2017-04-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154013A (en) * | 2016-06-17 | 2016-11-23 | 西安交通大学 | A kind of compound Luo-coil integrating resistor and manufacture method thereof |
| CN113917214A (en) * | 2021-09-22 | 2022-01-11 | 中国船舶工业系统工程研究院 | Self-integration Rogowski coil disc-shaped integral resistor and manufacturing method thereof |
| CN115436680A (en) * | 2022-09-30 | 2022-12-06 | 西北核技术研究所 | Small-resistance signal resistor for self-integrating Rogowski coil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013029349A (en) * | 2011-07-27 | 2013-02-07 | Central Research Institute Of Electric Power Industry | Impulse current detection device |
| CN103884899A (en) * | 2014-03-12 | 2014-06-25 | 西安交通大学 | Rogowski coil for large-current rapid pulse measurement |
-
2014
- 2014-11-14 CN CN201410649653.2A patent/CN104502664B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013029349A (en) * | 2011-07-27 | 2013-02-07 | Central Research Institute Of Electric Power Industry | Impulse current detection device |
| CN103884899A (en) * | 2014-03-12 | 2014-06-25 | 西安交通大学 | Rogowski coil for large-current rapid pulse measurement |
Non-Patent Citations (1)
| Title |
|---|
| 王珏 等: "用自积分式罗氏线圈测量纳秒级高压脉冲电流", 《强激光与粒子束》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154013A (en) * | 2016-06-17 | 2016-11-23 | 西安交通大学 | A kind of compound Luo-coil integrating resistor and manufacture method thereof |
| 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 |
| CN113917214A (en) * | 2021-09-22 | 2022-01-11 | 中国船舶工业系统工程研究院 | Self-integration Rogowski coil disc-shaped integral resistor and manufacturing method thereof |
| 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 |
| CN115436680A (en) * | 2022-09-30 | 2022-12-06 | 西北核技术研究所 | Small-resistance signal resistor for self-integrating Rogowski coil |
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| CN104502664B (en) | 2017-04-26 |
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