CN102769406B - Annular series loaded line connection structure - Google Patents
Annular series loaded line connection structure Download PDFInfo
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- CN102769406B CN102769406B CN201210245422.6A CN201210245422A CN102769406B CN 102769406 B CN102769406 B CN 102769406B CN 201210245422 A CN201210245422 A CN 201210245422A CN 102769406 B CN102769406 B CN 102769406B
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Abstract
The invention relates to an annular series loaded line connection structure. The annular series loaded line connection structure comprises an annular series loaded line, an organic glass support cylinder, a grounding support, and an outer cylinder. The connection structure is characterized in that the connection structure also includes a tapered paper cylinder and a copper mesh; the tapered paper cylinder is arranged between the annular series loaded line and the outer cylinder; the copper mesh is wound on the tapered paper cylinder; and the small-diameter end of the tapered paper cylinder is connected with the lowest level of the annular series loaded line, and the large-diameter end is connected with the outer cylinder. Because the magnitude of additional inductance while serially connecting the loaded line depends on the area enclosed by an inner and an outer discharge channels during discharge, the outer discharge channel is changed by the tapered grounding cylinder so as to reduce the area enclosed by the inner and outer discharge channels during discharge, so that the connection structure provided by the invention can remarkably reduce the additional inductance of the loaded line series connection structure, thereby improving the high-frequency performance. Accordingly, the loaded line series connection structure has good output voltage waveform.
Description
Technical field
The invention belongs to Pulse Power Techniques field, relate to a kind of syndeton of annular loaded in series line, is a kind of High-Power Microwave drive source loaded line cascaded structure for generation of long pulse.
Background technology
In order to study the generation of high power long pulse electron beam, need to develop high power long pulse source correlation technique.At present high pressure long pulse generation device mainly adopts the complex media of pulse forming network (PFN), spiral impulse line (Helical Forming Line) or high-k to form several fast pulse forming techniques such as line, produce use aspect hundred nanosecond pulses PFN technology device volume weight with on realizing difficulty, there is advantage compared with another two kinds of technology.
[periodical name] A Long-Pulse Generator Based on Tesla Transformer and Pulse-Forming Network.Su J.C., Zhang X.B.IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL.37, NO.10, OCT.2009:1954-1958, discloses the Tesla-PFN type long pulse power source of the dull and stereotyped line continued access of a kind of capacitive load after forming line.Structural design (the Li Rui of [periodical name] Tesla-PFN type long pulse power source loaded line, Zhang Xibo, Su Jiancang. light laser and the particle beams, 2011,23(11): 2893-2896), the concrete structure of the open multiple capacitive load two-conductor of Tesla-PFN type long pulse power source Plate-Transmission-Line series connection.In order to improve operating voltage, in the time that above-mentioned loaded line series connection is used, on the one hand because the series connection afterpulse direction of propagation is identical, can cause the problems such as pulse duration shortens, impedance diminishes and waveform is deteriorated, in the time that series connection progression increases, it is particularly outstanding that these problems can become, and is not easy to solve; On the other hand, no matter which kind of structure loaded in series line takes, there is an additional inductor in capital, additional inductor depends on the how many and structure of series connection progression, the existence of additional inductor can affect the high frequency response of loaded line, and along with increasing of serial connection progression, high frequency characteristics is poorer, thereby affect its output pulse quality.
Summary of the invention
For fear of the deficiencies in the prior art part, the present invention proposes a kind of syndeton of annular loaded in series line, mutual electromagnetic interference problem while solving the dull and stereotyped line discharged in series of Tesla-PFN type long pulse drive source capacitive load, reduce the additional inductor of loaded line cascaded structure, improve the output pulse top flatness of loaded in series line.
A syndeton for annular loaded in series line, comprises annular loaded in series line 4, polymethyl methacrylate support tube 9, ground connection support 8, urceolus 7; Characterized by further comprising taper paper web 5 and copper mesh 6; Between annular loaded in series line 4 and urceolus 7, be provided with taper paper web 5, be wound around copper mesh 6 on taper paper web 5, the smaller diameter end of taper paper web is connected with the minimum one-level of annular loaded in series line 4, and larger diameter end is connected with urceolus 7; Described annular loaded in series line 4 has removed the shading ring of front end.
The end diameter of described taper paper web 5 is identical with annular loaded in series line 4 external diameters, and outside diameter is identical with urceolus 7 internal diameters.
The syndeton of a kind of annular loaded in series line that the present invention proposes, while electric discharge due to adjacent load line on the one hand, the pulse direction of propagation is contrary, the induced current that mutual inductance causes and pole plate conduction current opposite direction, just can offset to a certain extent annular loaded line because impedance reduces the trend that causes output current to increase along angle, total output current is tended towards stability, there is good degaussing coupled characteristic.On the other hand, the area that inside and outside when the size of additional inductor depends on electric discharge while serial connection due to loaded line, discharge channel surrounds, taper ground connection cylinder has changed outer discharge channel, thereby the area that while having reduced electric discharge, inside and outside discharge channel surrounds, the additional inductor that can significantly reduce loaded line cascaded structure, improves its high frequency performance.Therefore, the output voltage waveforms of this loaded line cascaded structure is better.
Brief description of the drawings
Fig. 1: be loaded in series line overall structure schematic diagram;
Fig. 2: be single-stage capacitive load two-conductor Plate-Transmission-Line structural representation;
Fig. 3: the multi-stage loading line cascaded structure schematic diagram that is reverse connection;
1-capacitor group, 2-two-conductor flat board, 3-electrician's cardboard, 4-annular loaded line, 5-taper paper web, 6-copper mesh, 7-urceolus, 8-ground connection is supported, 9-polymethyl methacrylate support tube, 10-screw.
Embodiment
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
With reference to accompanying drawing 2, be first one group by withstand voltage designing requirement by every high voltage ceramic capacitor four strings, then capacitor group 1 is fastened on and between two-conductor flat board 2, forms annular loaded line 4.The number of capacitor group determines by design parameter, and the interval between capacitor group can adjust.The plate material of annular loaded line is red copper, identical with pole plate profile after copper pipe bending, and for making compact conformation, copper pipe is welded on inner side, pole plate edge, plays transition and the effect of shielding highfield.Between capacitor, be all connected by bolt and screw between capacitor and pole plate.
For another example accompanying drawing 3 is cascaded many annular loaded lines 4 taking polymethyl methacrylate support tube 9 as axle, and polymethyl methacrylate support tube Main Function is for loaded in series line provides mechanical support, and its diameter is slightly less than annular loaded line interior diameter.Adjacent two loaded lines only carry out a connection by wherein one end of loaded line with screw 10, remainder uses electrician's cardboard 3 to keep mutual electric insulation, ensure that all tie points are all on same dotted line as shown in Figure 3, and make adjacent two loaded lines from one end of loaded line connection to the other end opposite direction not connecting, be that the electric discharges at different levels of loaded in series line are successively according to---counterclockwise---clockwise clockwise ... order carry out, as shown in the arrow in Fig. 3.
With reference to accompanying drawing 1, electrician's cardboard is made to taper 5, the end diameter of cone cylinder is identical with annular loaded line 4 external diameters, and outside diameter is identical with urceolus 7 internal diameters.On cone cylinder, be wound around copper mesh 6, taper paper web 5 plays a supportive role, and winding copper mesh 6 thereon, for ground connection, plays leakage current, ensure that the copper mesh being wound around is evenly smooth, does not occur burr and spike.The smaller diameter end of taper ground connection cylinder 5 is connected with the minimum one-level conductor copper coin of annular loaded in series line 4, ensures good contact; Larger diameter end and urceolus 7 pass through screw fastening.
Before adding taper ground connection cylinder, discharge channel returns with the urceolus 7 being connected through supported grounding 8 along annular loaded line 4, and, shown in path in graphs II, the area that this discharge channel surrounds is a rectangle; After having added taper ground connection cylinder, discharge channel is directly returned to the urceolus 7 connecting by taper ground connection cylinder 5 along annular loaded line 4, and, shown in path in graphs I, the area that this discharge channel surrounds is a triangle.Can find out, the area that path I is enclosed is the half left and right of path II.
This loaded in series line continued access that the present invention proposes is forming line end, and Tesla transformer is given while forming line charging and regarded as large electric capacity, and voltage reduces vertically gradually; When main switch conducting electric discharge, regarded as transmission line, pulse propagation is along angle.On the one hand, while making the electric discharge of adjacent load line due to this reverse connection mode, the pulse direction of propagation is contrary, the induced current that mutual inductance causes and pole plate conduction current opposite direction, just can offset to a certain extent annular loaded line because impedance reduces the trend that causes output current to increase along angle, total output current is tended towards stability, and therefore output voltage waveforms discharge waveform when connecting is in the same way good; On the other hand, taper ground connection cylinder is made simple, easily realizes, by changing outer discharge channel, the area that while having reduced electric discharge, inside and outside discharge channel surrounds, can significantly reduce the additional inductor of loaded line cascaded structure, thereby the high frequency performance that improves loaded in series line, improves its output voltage waveforms.
Claims (2)
1. a syndeton for annular loaded in series line, comprises annular loaded in series line (4), polymethyl methacrylate support tube (9), ground connection support (8), urceolus (7); Characterized by further comprising taper paper web (5) and copper mesh (6); Between annular loaded in series line (4) and urceolus (7), be provided with taper paper web (5), the upper copper mesh (6) that is wound around of taper paper web (5), the smaller diameter end of taper paper web is connected with the minimum one-level of annular loaded in series line (4), and larger diameter end is connected with urceolus (7); Described syndeton does not comprise the shading ring of annular loaded in series line (4) front end.
2. the syndeton of annular loaded in series line according to claim 1, is characterized in that: the end diameter of described taper paper web (5) is identical with annular loaded in series line (4) external diameter, and outside diameter is identical with urceolus (7) internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210245422.6A CN102769406B (en) | 2012-07-16 | 2012-07-16 | Annular series loaded line connection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210245422.6A CN102769406B (en) | 2012-07-16 | 2012-07-16 | Annular series loaded line connection structure |
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| Publication Number | Publication Date |
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| CN102769406A CN102769406A (en) | 2012-11-07 |
| CN102769406B true CN102769406B (en) | 2014-07-30 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953987B (en) * | 2015-05-21 | 2017-07-28 | 西北核技术研究所 | Coaxial two-stage reentries pulse-forming line |
| CN113206655A (en) * | 2021-04-23 | 2021-08-03 | 中国人民解放军国防科技大学 | Compact low-impedance double-line type pulse forming network distributed along angular direction |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7215697B2 (en) * | 1999-08-27 | 2007-05-08 | Hill Alan E | Matched impedance controlled avalanche driver |
| US7830040B2 (en) * | 2007-05-15 | 2010-11-09 | Sci-Eng Solutions, LLC | Coiled transmission line pulse generators |
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2012
- 2012-07-16 CN CN201210245422.6A patent/CN102769406B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7215697B2 (en) * | 1999-08-27 | 2007-05-08 | Hill Alan E | Matched impedance controlled avalanche driver |
| US7830040B2 (en) * | 2007-05-15 | 2010-11-09 | Sci-Eng Solutions, LLC | Coiled transmission line pulse generators |
Non-Patent Citations (5)
| Title |
|---|
| A Long-Pulse Generator Based on Tesla Transformer and Pulse-Forming Network;Jiancang Su等;《IEEE TRANSACTIONS ON PLASMA SCIENCE》;20091031;全文 * |
| Jiancang Su等.A Long-Pulse Generator Based on Tesla Transformer and Pulse-Forming Network.《IEEE TRANSACTIONS ON PLASMA SCIENCE》.2009, |
| 张喜波等.电容加载平板传输线型PFN理论与实验研究.《强激光与粒子束》.2009, |
| 李锐等.Tesla-PFN型长脉冲功率源加载线的结构设计.《强激光与粒子束》.2011, * |
| 电容加载平板传输线型PFN理论与实验研究;张喜波等;《强激光与粒子束》;20090430;全文 * |
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