CN101424707A - Coaxial structure capacitive divider for measuring ns high voltage pulse - Google Patents
Coaxial structure capacitive divider for measuring ns high voltage pulse Download PDFInfo
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- CN101424707A CN101424707A CNA2008100515568A CN200810051556A CN101424707A CN 101424707 A CN101424707 A CN 101424707A CN A2008100515568 A CNA2008100515568 A CN A2008100515568A CN 200810051556 A CN200810051556 A CN 200810051556A CN 101424707 A CN101424707 A CN 101424707A
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Abstract
The invention relates to a coaxial capacitive divider for measuring a nanosecond high-voltage pulse, which belongs to the structural design of a divider for a high-voltage pulse device. The divider comprises high voltage electrodes, airproof rubber rings, a high-voltage seal cavity cap, insulating oil, a main insulated column, an intermediate electrode, a ground electrode, an external protective cover, an insulating ring and a low-voltage seal cavity cap and adopts the connection proposal that the high voltage electrodes are installed in the main insulated column by screw threads, the main insulated column is connected with the intermediate electrode by screw threads, the intermediate electrode is installed in the ground electrode by screw threads, the ground electrode is installed in the low-voltage seal cavity cap by screw threads, and the external protective cover is installed in the high-voltage seal cavity cap by screw threads. The invention has the advantages that as capacitors are distributed by the coaxial structure and are used as voltage division members, the electrical inductance of lead-in wires on both ends of one lumped parameter capacitor is reduced, and the electrical inductance of four lead-in wires of the two capacitors is reduced, thus the invention can increase the response frequency of the divider to a great extent.
Description
Technical field
A kind of coaxial structure capacitive divider of measuring high-voltage nanosecond pulse of the present invention belongs to the structure of a kind of voltage divider in the high-voltage pulse device.
Background technology
Various high-voltage pulse voltage dividers have obtained widespread use in its association area, and resitstance voltage divider is arranged, capacitive divider, and RC divider in order to improve its response frequency, is made into coaxial structure usually.But above-mentioned voltage divider mainly is made of lumped-parameter element, and lumped-parameter element is because the restriction of structure, and its structure inductance is bigger, has therefore limited the responsive bandwidth of voltage divider.Still find no same or analogous record through consulting related data with the present invention.
Summary of the invention
The purpose of this invention is to provide a kind of coaxial-type distributed capacitance voltage divider of measuring high-voltage nanosecond pulse, be used for improving its response frequency.
The concrete structure of coaxial structure distributed capacitance voltage divider of the present invention is as follows: a kind of coaxial-type distributed capacitance voltage divider of measuring high-voltage nanosecond pulse; comprise high-field electrode, O-ring seal, high pressure sealing pressure cap, insulating oil, major insulation post, target, ground electrode, outer protective cover, O-ring seal, dead ring, O-ring seal, low pressure seal pressure cap, as shown in Figure 1.
Each position component and annexation: high-field electrode is positioned in the major insulation post by screw thread; the major insulation post is connected with target by screw thread; target is positioned at dead ring; O-ring seal is packed in the seal groove of dead ring; dead ring is positioned on the ground electrode by screw thread; ground electrode is contained in the low pressure seal pressure cap by screw thread; O-ring seal is enclosed within on the ground electrode; ground electrode is packed into by screw thread in the outer protective cover; O-ring seal is placed in the seal groove of outer protective cover; outer protective cover is from top to bottom packed in the high pressure sealing pressure cap by screw thread, and insulating oil is full of by O-ring seal; O-ring seal; in the oil seal space that O-ring seal is formed.
Fig. 2 is an electrical schematic diagram of the present invention: the electric capacity formed by high-field electrode 1 and target 6 of C0 wherein, and the electric capacity that C1 is made up of target 6 and ground electrode 7, Ui are the capacitive divider input voltages, Uo is the capacitive divider output voltage.
Advantage of the present invention is: owing to adopt the coaxial structure distributed capacitance to do sectional pressure element, reduced owing to adopt the inductance of lumped parameter electric capacity two ends lead-in wire, two electric capacity have reduced by four lead-in inductances altogether, so the present invention can improve the response frequency of voltage divider to a great extent.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention, also is Figure of abstract.Wherein high-field electrode 1, O-ring seal 2, high pressure sealing pressure cap 3, insulating oil 4, major insulation post 5, target 6, ground electrode 7, outer protective cover 8, O-ring seal 9, dead ring 10, O-ring seal 11, low pressure seal pressure cap 12.
Accompanying drawing 2 is electrical schematic diagrams of the present invention.
Accompanying drawing 3 is electrical schematic diagrams of the embodiment of the invention.
Embodiment
3 introduce embodiments of the invention with reference to the accompanying drawings:
A kind of coaxial-type distributed capacitance voltage divider of measuring high pressure ns pulse; high-field electrode 1; target 6; ground electrode 7 can be made by the good material of electric conductivities such as brass; high pressure sealing pressure cap 3; major insulation post 5; outer protective cover 8; dead ring 10; low pressure seal pressure cap 12 can be made by the organic glass insulating material; O-ring seal 2; O-ring seal 9; O-ring seal 11 can be made by the O type circle that fluororubber is made; insulating oil 4 can adopt the well behaved insulating oil of capacitor wet goods; high-field electrode 1 is connected to tested point; ground electrode 7 connects the tested point earth potential; target 6 is connected behind the matching network to oscillograph, can carry out waveform measurement test point.
The embodiment schematic diagram is seen Figure of description 3, wherein, C0, C1 form capacitive divider of the present invention, R1, R2, C2 and concentric cable impedance Z are formed matching network, matching network links to each other with oscillograph, tested point voltage signal Ui is input to capacitive divider, and capacitive divider output signal U o is input to oscillograph by matching network, shows the measured signal voltage waveform in oscillograph.
Claims (2)
1 one kinds of coaxial structure capacitive dividers of measuring ns high voltage pulse; it is characterized in that this voltage divider comprises high-field electrode (1), O-ring seal (2), high pressure sealing pressure cap (3), insulating oil (4), major insulation post (5), target (6), ground electrode (7), outer protective cover (8), O-ring seal (9), dead ring (10), O-ring seal (11), low pressure seal pressure cap (12)
Each position component and annexation: high-field electrode (1) is positioned in the major insulation post (5) by screw thread; major insulation post (5) is connected with target (6) by screw thread; target (6) is positioned at dead ring (10); dead ring (10) is positioned in the ground electrode (7) by screw thread; ground electrode (7) is installed in the low pressure seal pressure cap (12) by screw thread; O-ring seal (9) is enclosed within on the ground electrode (7); ground electrode (7) is by the outer protective cover that is threaded (8); high pressure sealing pressure cap (3) is connected with outer protective cover (8) by the screw thread dress, and insulating oil (4) is full of by O-ring seal (2); O-ring seal (9); in the oil seal space that O-ring seal (11) is formed.
2 a kind of coaxial-type distributed capacitance voltage dividers of measuring ns high voltage pulse according to claim 1; it is characterized in that outer protective cover (8), dead ring (10) are equipped with the seal groove that is used for sealed insulation oil; O-ring seal (2) is placed in the seal groove of outer protective cover (8), and O-ring seal (11) is packed in the seal groove of dead ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100515568A CN101424707A (en) | 2008-12-09 | 2008-12-09 | Coaxial structure capacitive divider for measuring ns high voltage pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100515568A CN101424707A (en) | 2008-12-09 | 2008-12-09 | Coaxial structure capacitive divider for measuring ns high voltage pulse |
Publications (1)
| Publication Number | Publication Date |
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| CN101424707A true CN101424707A (en) | 2009-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100515568A Pending CN101424707A (en) | 2008-12-09 | 2008-12-09 | Coaxial structure capacitive divider for measuring ns high voltage pulse |
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| CN (1) | CN101424707A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793915A (en) * | 2010-04-06 | 2010-08-04 | 西安交通大学 | Capacitive voltage divider formed by a printed circuit board |
| CN101839939A (en) * | 2010-04-23 | 2010-09-22 | 重庆大学 | Subnanosecond high-voltage pulse measurement system |
| CN102128964A (en) * | 2011-01-14 | 2011-07-20 | 西北核技术研究所 | Capacitive voltage divider used for measuring radiation diode parameters and installation method |
| CN101710137B (en) * | 2009-12-09 | 2011-07-27 | 西安交通大学 | Inductance and resistance compensating type capacitive voltage divider |
| CN106019199A (en) * | 2016-06-30 | 2016-10-12 | 中国电力科学研究院 | Annular capacitive voltage divider for linearity calibration of impact voltage divider |
| CN107240796A (en) * | 2017-06-02 | 2017-10-10 | 西北核技术研究所 | High sealing coaxial cable connector with two grades of partial pressures |
| CN108152554A (en) * | 2018-02-02 | 2018-06-12 | 中国工程物理研究院流体物理研究所 | A kind of capacitive divider for measuring coaxial cable pulse voltage |
| CN113156248A (en) * | 2021-04-23 | 2021-07-23 | 广东电网有限责任公司电力科学研究院 | Capacitive voltage divider defect test model and test method thereof |
| CN114509585A (en) * | 2022-01-27 | 2022-05-17 | 西北核技术研究所 | Coaxial high-voltage pulse measuring probe structure |
-
2008
- 2008-12-09 CN CNA2008100515568A patent/CN101424707A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710137B (en) * | 2009-12-09 | 2011-07-27 | 西安交通大学 | Inductance and resistance compensating type capacitive voltage divider |
| CN101793915A (en) * | 2010-04-06 | 2010-08-04 | 西安交通大学 | Capacitive voltage divider formed by a printed circuit board |
| CN101839939A (en) * | 2010-04-23 | 2010-09-22 | 重庆大学 | Subnanosecond high-voltage pulse measurement system |
| CN101839939B (en) * | 2010-04-23 | 2011-09-14 | 重庆大学 | Subnanosecond high-voltage pulse measurement system |
| CN102128964A (en) * | 2011-01-14 | 2011-07-20 | 西北核技术研究所 | Capacitive voltage divider used for measuring radiation diode parameters and installation method |
| CN102128964B (en) * | 2011-01-14 | 2013-03-20 | 西北核技术研究所 | Capacitive voltage divider used for measuring radiation diode parameters and installation method |
| CN106019199A (en) * | 2016-06-30 | 2016-10-12 | 中国电力科学研究院 | Annular capacitive voltage divider for linearity calibration of impact voltage divider |
| CN106019199B (en) * | 2016-06-30 | 2019-12-27 | 中国电力科学研究院 | Annular capacitive voltage divider for linearity calibration of impulse voltage divider |
| CN107240796A (en) * | 2017-06-02 | 2017-10-10 | 西北核技术研究所 | High sealing coaxial cable connector with two grades of partial pressures |
| CN108152554A (en) * | 2018-02-02 | 2018-06-12 | 中国工程物理研究院流体物理研究所 | A kind of capacitive divider for measuring coaxial cable pulse voltage |
| CN108152554B (en) * | 2018-02-02 | 2024-03-19 | 中国工程物理研究院流体物理研究所 | Capacitive voltage divider for measuring pulse voltage of coaxial cable |
| CN113156248A (en) * | 2021-04-23 | 2021-07-23 | 广东电网有限责任公司电力科学研究院 | Capacitive voltage divider defect test model and test method thereof |
| CN114509585A (en) * | 2022-01-27 | 2022-05-17 | 西北核技术研究所 | Coaxial high-voltage pulse measuring probe structure |
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Open date: 20090506 |