CN103412167B - A kind of coaxial Disc Shunt for recurrent pulse current measurement - Google Patents
A kind of coaxial Disc Shunt for recurrent pulse current measurement Download PDFInfo
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- CN103412167B CN103412167B CN201310337293.8A CN201310337293A CN103412167B CN 103412167 B CN103412167 B CN 103412167B CN 201310337293 A CN201310337293 A CN 201310337293A CN 103412167 B CN103412167 B CN 103412167B
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- red copper
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Abstract
The invention discloses a kind of coaxial Disc Shunt for recurrent pulse current measurement, comprise top panel, red copper disk and lower panel; The lateral surface of top panel is installed with a fourth head; The anode of fourth head is connected with red copper disk, and negative terminal is connected with top panel; First-class point of the edge of red copper disk is provided with 12 resistance; One end of each resistance is connected with described red copper disk by copper sheet, and the other end is connected with the medial surface of lower panel by copper sheet; The lateral surface of lower panel is installed with a coaxial N-type head; The negative terminal of this N-type head is connected with lower panel, and anode is connected with described red copper disk; Connected by mechanical conducting between top panel and lower panel and be solidly installed.Good heat dissipation effect of the present invention, and coaxial configuration reduces skin effect and magnetic interference, solves the problem that 1A ~ 100A, 50Hz ~ 200kHz recurrent pulse current measurement accuracy are not high.
Description
Technical field
The present invention relates to a kind of shunt, particularly a kind of coaxial Disc Shunt for recurrent pulse current measurement.
Background technology
Pulse Power Techniques are the very fast emerge sciences of development in recent years, are widely used at national defence, scientific experiment, electric power, agricultural and medical domain, and corresponding recurrent pulse current measurement techniques development is swift and violent.Shunt method is optimal selection when recurrent pulse amplitude is less, frequency is lower.Shunt method is generally suitable for measuring the pulse current being less than 100kA, and in measuring process, shunt must access in discharge loop.
In the various shunts of pulse current measuring period, the structure of tubular type shunt is simple, thus applies very general.But when tested recurrent pulse current duration is longer, the rise time is very fast simultaneously, tubular type shunt is difficult to meet the demands due to the contradiction between its length and volume.In addition, if when the equivalent frequency of tested recurrent pulse electric current is higher, the length of resistance tube is compared with equivalent wavelength and can not be ignored, and at this moment tubular type shunt again can not process as lumped parameter.
Coaxial Disc Shunt has good low sense characteristic, and its step response rise time can reach ns level.Coaxial Disc Shunt generally all refers to the disc type resistor making plane.Resistance material can adopt carbon film or metal, is usually arranged on the end of coaxial transmission line, takes out voltage signal, then via coaxial cable for high frequency, signal is delivered to measuring oscilloscope by the center of coiling and edge; The wave impedance of coaxial transmission line is identical with concentric cable wave impedance.
But generic coaxial Disc Shunt is applied in the high-frequency current measurement of amplitude, can produce larger error.Along with the increase of tested electric current, the heating of generic coaxial Disc Shunt sharply increases, in order to ensure the normal work of shunt, the size of shunt, weight and cost also inevitably sharply increase, and limit the application of generic coaxial Disc Shunt in big current industry spot.On the other hand during generic coaxial disc type pulse current measuring period, due to the existence of skin effect, make the distribution of current non-homogenized in shunt, the voltage generation time shift of shunt output terminal, the precision of measurement will reduce.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of coaxial Disc Shunt for recurrent pulse current measurement; This shunt good heat dissipation effect, and coaxial configuration reduces skin effect and magnetic interference, solves the problem that 1A ~ 100A, 50Hz ~ 200kHz recurrent pulse current measurement accuracy are not high, reduces pulse shape distortion.
For solving the problems of the technologies described above, the present invention adopts following technical proposals:
For a coaxial Disc Shunt for recurrent pulse current measurement, described shunt comprises top panel, red copper disk and lower panel;
The lateral surface of described top panel is installed with a fourth head, anode and the described red copper disk of this fourth head are welded to connect by circuit, and the negative terminal of fourth head is connected with the conducting of top panel machinery;
First-class point of the edge of described red copper disk is provided with 12 resistance; One end of each resistance is welded to connect by copper sheet and described red copper disk circuit, and the other end of each resistance is welded to connect by the medial surface circuit of copper sheet and described lower panel;
Described red copper disk is also provided with two fixed vias, two screws through this fixed via, and coordinate with insulation spacer, are fixed on lower panel by red copper disk.
The lateral surface of described lower panel is installed with a coaxial N-type head, the negative terminal of this N-type head is connected with the conducting of lower panel machinery, and anode and the described red copper disk circuit of this N-type head are welded to connect;
Connected by mechanical conducting between described top panel and lower panel and be solidly installed.。
Described resistance is the CSM series resistance of VISHAY company, and resistance is 0.12 Ω, and after 12 resistor coupled in parallel, resistance is 0.01 Ω, is convenient to later stage voltage measurement numerical evaluation, and be 10A or power by maximum current is 20W.
Described top panel entirety is 150mm × 150mm × 30mm rectangular parallelepiped, and lower panel entirety is 150mm × 150mm × 15mm rectangular parallelepiped, and described red copper disk is the right cylinder of Φ 90mm, high 2mm.
Further, the medial surface of described lower panel is provided with the first circular groove matched with described red copper disk, described red copper disk is arranged in the first circular groove, and this red copper disk is fixedly mounted on the medial surface of described lower panel by insulated bolt and pad.Described first circular groove is Φ 115mm column type groove.
Further, described red copper disk is provided with center pit; The anode of described fourth head is welded to connect by circuit through the plate body of top panel and the center pit of described red copper disk; The anode of described N-type head is welded to connect through the plate body of lower panel and the center pit circuit of described red copper disk.
Further, described circuit is welded to connect as scolding tin connects; Described mechanical conducting connects for being spirally connected.
Further, the medial surface of described top panel is provided with the groove matched with each resistance position; Described groove is that resistance welded leaves enough spaces.
Further, top panel and lower panel are red copper material.
Further, the medial surface of described top panel is provided with the second circular groove that described red copper disk position matches; Described groove is arranged on the edge of the second circular groove.Described second circular groove is Φ 115mm column type groove.
Further, the medial surface of described red copper disk and described top panel is that contactless state is arranged.
Further, described top panel comprises the first top panel and the second top panel, and the bottom surface of described first top panel and the end face of described second top panel are linked together by screw; Top panel is divided into two-part object for convenience of assembling.
Principle of work of the present invention is:
Pulse current is inputted by the fourth head of top panel, flows to red copper disk through fourth head anode, through being 12 road resistance to lower panel, owing to being connected for mechanical conducting between lower panel with top panel, electric current gets back to top panel, i.e. fourth head negative terminal, formation loop.The N-type head anode of lower panel takes voltage signal (namely the N-type head anode of lower panel takes voltage signal from red copper disk-resistance end, and negative terminal takes voltage signal from lower panel) from red copper disk-resistance end, negative terminal from lower panel; Namely this coaxial Disc Shunt realizes that pulse current is converted into pulse voltage and measures.
The present invention, compared with existing product, has following actively useful effect:
1, resistance arrangement and Interface design all use coaxial configuration, and symmetry is good, and top panel and lower panel are metal material, can reduce distribution parameter impact, shielding stray magnetic field.Because fourth head and N-type head are that coaxial configuration is arranged, signal is through coaxial interface input and output, and degree of distortion is little.
2, each parts are made up of red copper, electroplate, good conductivity, and one-piece construction is all metal material, and thermal diffusivity is good, can measure for a long time and not affect measuring accuracy.
3, adopt steady resistance that is high-power, bandwidth, will excessive heating cause resistance value to change by electric current for a long time, affect measurement data.
4, reduce pulse shape distortion, measure distortionless for the rise and fall figure of pulse signal.
Accompanying drawing explanation
Fig. 1 is one of perspective view of the present invention.
Fig. 2 is perspective view two of the present invention.
Fig. 3 is side view of the present invention.
Fig. 4 is the structural representation of top panel in the present invention.
Fig. 5 is the structural representation of red copper disk in the present invention.
Fig. 6 is the structural representation of resistance in the present invention.
Fig. 7 is the structural representation of lower panel in the present invention.
Fig. 8 is partial sectional view of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Fig. 1 to 8, a kind of coaxial Disc Shunt for recurrent pulse current measurement, described shunt comprises top panel 1, red copper disk 2 and lower panel 3; Top panel 1 and lower panel 3 are red copper material; Connected by mechanical conducting between the medial surface of top panel 1 and the medial surface of lower panel 3 and be solidly installed, described mechanical conducting connects for being spirally connected.Described top panel 1 comprises the first top panel 13 and the second top panel 14, and the bottom surface of described first top panel 13 and the end face of described second top panel 14 are linked together by screw; Top panel 1 is divided into two-part object for convenience of assembling.
Described red copper disk 2 is provided with center pit 22; First-class point of the edge of described red copper disk 2 is provided with 12 resistance 21; Resistance 21 adopts the CSM series resistance of VISHAY company, and resistance is 0.12 Ω, and after 12 resistor coupled in parallel, resistance is 0.01 Ω, is convenient to later stage voltage measurement numerical evaluation.One end of each resistance 21 is connected with described red copper disk 2 scolding tin by copper sheet 211, and the other end of each resistance 21 is connected with the medial surface scolding tin of described lower panel 3 by copper sheet 211.
The lateral surface of described lower panel 3 is installed with a coaxial N-type 5, the negative terminal of described N-type 5 is connected with the mechanical conducting of lower panel 3, and the anode of N-type 5 is connected with center pit 22 scolding tin of described red copper disk 2 through the plate body of lower panel 3; The medial surface of lower panel 3 is provided with the first circular groove 31 matched with described red copper disk 2, and described red copper disk 2 is arranged in the first circular groove 31.
Red copper disk 2 is provided with two fixed vias, 23, two screws through this fixed via 23, and coordinates with insulation spacer, is fixed on lower panel 3 by red copper disk 2.
The lateral surface of described top panel 1 is installed with a fourth 4, the anode of this fourth 4 is connected with center pit 22 scolding tin of described red copper disk 2 through the plate body of top panel 1, and negative terminal and the top panel 1 of fourth 4 are screwed together; The medial surface of top panel 1 is provided with the second circular groove 12 that described red copper disk 2 position matches; The edge of the second circular groove 12 is provided with the groove 11 matched with each resistance 21 position; Groove 11 is that resistance 21 welding leaves enough spaces;
Described red copper disk 2 is that contactless state is arranged with the medial surface of described top panel 1.
Described top panel 1 entirety is 150mm × 150mm × 30mm rectangular parallelepiped, and lower panel 3 entirety is 150mm × 150mm × 15mm rectangular parallelepiped, and described red copper disk 2 is the right cylinder of Φ 90mm, high 2mm;
The word in description orientation adopted herein " on ", D score, "left", "right" etc. are all convenience in order to illustrate based on the orientation in accompanying drawing shown in drawing, in actual device, these orientation may be different due to the disposing way of device.
In sum, embodiment of the present invention only provides a kind of embodiment of the best, technology contents of the present invention and technical characterstic disclose as above, but the personage being familiar with the technology still may do the various replacement and the modification that do not deviate from creation spirit of the present invention based on disclosed content; Therefore, protection scope of the present invention is not limited to the technology contents that embodiment discloses, therefore all equivalence changes done according to shape of the present invention, structure and principle, be all encompassed in protection scope of the present invention.
Claims (5)
1. for a coaxial Disc Shunt for recurrent pulse current measurement, it is characterized in that: described shunt comprises top panel (1), red copper disk (2) and lower panel (3);
The lateral surface of described top panel (1) is installed with a fourth head (4), anode and the described red copper disk (2) of this fourth head (4) are welded to connect by circuit, and the negative terminal of fourth head (4) is connected with top panel (1) mechanical conducting;
First-class point of the edge of described red copper disk (2) is provided with 12 resistance (21); One end of each resistance (21) is welded to connect by copper sheet (211) and described red copper disk (2) circuit, and the other end of each resistance (21) is welded to connect by the medial surface circuit of copper sheet (211) with described lower panel (3);
The lateral surface of described lower panel (3) is installed with a coaxial N-type head (5), the negative terminal of this N-type head (5) is connected with lower panel (3) mechanical conducting, and anode and described red copper disk (2) circuit of this N-type head (5) are welded to connect;
Connected by mechanical conducting between described top panel (1) and lower panel (3) and be solidly installed;
The medial surface of described lower panel (3) is provided with the first circular groove (31) matched with described red copper disk (2), described red copper disk (2) is arranged in the first circular groove (31), and this red copper disk (2) is fixedly mounted on by insulated bolt and pad on the medial surface of described lower panel (3);
Described red copper disk (2) is provided with center pit (22); The anode of described fourth head (4) is welded to connect by circuit through the plate body of top panel (1) and the center pit (22) of described red copper disk (2); The anode of described N-type head (5) is welded to connect through the plate body of lower panel (3) and center pit (22) circuit of described red copper disk (2);
The medial surface of described top panel (1) is provided with the groove (11) matched with each resistance (21) position;
The medial surface of described top panel (1) is provided with the second circular groove (12) that described red copper disk (2) position matches; Described groove (11) is arranged on the edge of the second circular groove (12).
2. a kind of coaxial Disc Shunt for recurrent pulse current measurement according to claim 1, is characterized in that: described circuit is welded to connect as scolding tin connects; Described mechanical conducting connects for being spirally connected.
3. a kind of coaxial Disc Shunt for recurrent pulse current measurement according to claim 1, is characterized in that: top panel (1) and lower panel (3) are red copper material.
4. a kind of coaxial Disc Shunt for recurrent pulse current measurement according to claim 1, is characterized in that: described red copper disk (2) is that contactless state is arranged with the medial surface of described top panel (1).
5. a kind of coaxial Disc Shunt for recurrent pulse current measurement according to claim 1, it is characterized in that: described top panel (1) comprises the first top panel (13) and the second top panel (14), the bottom surface of described first top panel (13) and the end face of described second top panel (14) are linked together by screw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310337293.8A CN103412167B (en) | 2013-08-05 | 2013-08-05 | A kind of coaxial Disc Shunt for recurrent pulse current measurement |
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| CN201310337293.8A CN103412167B (en) | 2013-08-05 | 2013-08-05 | A kind of coaxial Disc Shunt for recurrent pulse current measurement |
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| CN103412167A CN103412167A (en) | 2013-11-27 |
| CN103412167B true CN103412167B (en) | 2016-01-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372498B (en) * | 2015-10-29 | 2018-01-02 | 国网山西省电力公司电力科学研究院 | Current divider impedance parameter for transient current measure determines method |
| CN106093523A (en) * | 2016-06-21 | 2016-11-09 | 福建省计量科学研究院 | A kind of I V changer |
| CN106556725A (en) * | 2016-11-01 | 2017-04-05 | 西北核技术研究所 | For the coaxial-type diverter of X pinch load current measurements |
| CN108169532B (en) * | 2018-03-06 | 2023-12-15 | 大连理工大学 | Detachable high-precision quick-response noninductive shunt |
| CN109884371B (en) * | 2019-03-04 | 2020-02-14 | 华中科技大学 | Anti-skin-effect large-current measuring device |
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| CN2685893Y (en) * | 2004-02-17 | 2005-03-16 | 张斌 | Large current high precision electric resistance sampling shunt in battery testing system |
| RO121728B1 (en) * | 2002-12-05 | 2008-03-28 | Institutul De Cercetare Şi Proiectare Pentru Electrotehnică - Icpe S.A. | Installation for assembling terminal covers in the replacing elements of high voltage safety fuses, under intense magnetic field |
| CN101556306A (en) * | 2009-05-07 | 2009-10-14 | 西安交通大学 | Switch apparatus back-arc medium recovery strength nanosecond continuous pulse measuring device and method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5349288A (en) * | 1992-09-04 | 1994-09-20 | Miller John S | Radial planar current detection device having an extended frequency range of response |
| CN2321111Y (en) * | 1998-02-10 | 1999-05-26 | 中国人民解放军国防科学技术大学 | Vacuum diode with coaxial current divider |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO121728B1 (en) * | 2002-12-05 | 2008-03-28 | Institutul De Cercetare Şi Proiectare Pentru Electrotehnică - Icpe S.A. | Installation for assembling terminal covers in the replacing elements of high voltage safety fuses, under intense magnetic field |
| CN2685893Y (en) * | 2004-02-17 | 2005-03-16 | 张斌 | Large current high precision electric resistance sampling shunt in battery testing system |
| CN101556306A (en) * | 2009-05-07 | 2009-10-14 | 西安交通大学 | Switch apparatus back-arc medium recovery strength nanosecond continuous pulse measuring device and method thereof |
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