CN204577823U - A kind of coaxial state pulse forming line based on helical structure - Google Patents
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Abstract
本实用新型公开了一种基于螺旋结构的同轴固态脉冲形成线，属于高功率脉冲调制技术领域。该同轴固态脉冲形成线由筒状玻璃陶瓷介质、筒状内电极、筒状外电极组成，三者之间为同心排列，由内向外依次为筒状金属内电极、筒状陶瓷介质、筒状金属外电极。其中，筒状外电极上加工出螺旋凹槽，以形成外螺旋面电极结构。在不增加脉冲形成线的体积轴向长度的前提下，螺旋电极结构能够大幅增加脉冲形成线输出电脉冲的宽度，同时有效实现了脉冲功率装置的小型化。
The utility model discloses a coaxial solid-state pulse forming line based on a helical structure, which belongs to the technical field of high-power pulse modulation. The coaxial solid-state pulse forming line is composed of a cylindrical glass-ceramic medium, a cylindrical inner electrode, and a cylindrical outer electrode. metal outer electrodes. Wherein, a spiral groove is processed on the cylindrical outer electrode to form an outer helical surface electrode structure. On the premise of not increasing the volume axial length of the pulse forming line, the spiral electrode structure can greatly increase the width of the output electric pulse of the pulse forming line, and at the same time effectively realize the miniaturization of the pulse power device.
Description
技术领域： Technical field:
本实用新型涉及高功率脉冲调制技术领域的固态脉冲形成线，尤其是一种可用于增加输出电脉冲宽度的基于螺旋结构同轴固态脉冲形成线。 The utility model relates to a solid-state pulse forming line in the technical field of high-power pulse modulation, in particular to a coaxial solid-state pulse forming line based on a helical structure that can be used to increase the width of an output electric pulse.
背景技术： Background technique:
高功率脉冲调制技术是一种把“慢”存储起来的具有较高密度的电场或磁场能量，在时间尺度上进行压缩，然后在极短时间内(20-100ns)释放给负载的电物理技术。脉冲形成线是产生百纳秒准方波长脉冲的主要方法，是高功率脉冲调制装置的关键部件之一。高功率脉冲调制装置在民用和国防领域有着重要的应用价值，是进行高功率微波、电子束泵浦高功率激光、X射线、离子源、废气废水处理、杀菌以及食品保鲜、医疗等研究的重要试验平台。而这些应用对脉冲功率调制器提出了小型化、长脉冲和长使用寿命的要求。 High-power pulse modulation technology is an electrophysical technology that compresses the "slow" stored high-density electric or magnetic field energy on a time scale, and then releases it to the load in a very short time (20-100ns). . The pulse forming line is the main method to generate quasi-square wavelength pulses of hundreds of nanoseconds, and it is one of the key components of high-power pulse modulation devices. High-power pulse modulation devices have important application value in civil and national defense fields, and are important for research on high-power microwaves, electron beam pumped high-power lasers, X-rays, ion sources, waste gas and wastewater treatment, sterilization, food preservation, and medical treatment. Test Platform. And these applications put forward the requirements of miniaturization, long pulse and long service life for the pulse power modulator.
目前，脉冲形成线主要采用液态储能介质，例如变压器油、去离子水等。但是，变压器油介电常数较低(相对介电常数εr一般在2～3之间)，根据储能密度公式U＝1/2ε0εrE2(ε0为真空介电常数，E为介质击穿场强)可以看出，低的介电常数和击穿场强会导致低的储能密度，所以变压器油单位体积储能密度不高，导致形成线储能部分体积较大。此外，液态介质可靠性不高，易发生故障，导致装置的实用化难度加大；环境适应能力不强，如在高温或低温等恶劣环境下，液体介质性质易发生改变，导致装置无法正常工作。并且某些液体储能介质需要配备附属设备，如去离子水介质(相对介电常数εr＝81)虽然拥有相对较高储能密度，但是其需要附属设备以维持其高电阻率，导致整个脉冲功率装置体积庞大。 Currently, pulse forming lines mainly use liquid energy storage media, such as transformer oil and deionized water. However, the dielectric constant of transformer oil is low (relative dielectric constant ε r is generally between 2 and 3), according to the energy storage density formula U=1/2ε 0 ε r E 2 (ε 0 is the vacuum dielectric constant, E is the dielectric breakdown field strength), it can be seen that low dielectric constant and breakdown field strength will lead to low energy storage density, so the energy storage density per unit volume of transformer oil is not high, resulting in a larger volume of the energy storage part of the line. In addition, the reliability of the liquid medium is not high, and it is prone to failure, which makes the practicality of the device more difficult; the environmental adaptability is not strong, such as in harsh environments such as high temperature or low temperature, the properties of the liquid medium are easy to change, resulting in the device not working properly . And some liquid energy storage media need to be equipped with auxiliary equipment, such as deionized water medium (relative permittivity ε r =81), although it has a relatively high energy storage density, it needs auxiliary equipment to maintain its high resistivity, resulting in the entire Pulse power devices are bulky.
与液态介质相比，固体储能介质由于具有高介电常数和击穿场强(即具有高储能密度)，同时兼具低介电损耗和高电阻率等优点，基于固体储能介质传输线的脉冲功率源装置本身具有小型化，长寿命和性能稳定等优点。脉冲形成线的常见结构有同轴结构和平板结构两种。固态脉冲形成线一般采用平板结构，如中国工程物理研究院流体物理研究所研制的固态脉冲功率装置【谌怡，夏连胜，王卫，等.“基于光导开关和平板线的固态脉冲功率技术”，《太赫兹科学与电子信息学报》，2014，Vol.12，No.1，pp:32-36】中所设计的平板脉冲形成线。该装置使用平板结构的脉冲形成线，选择CaO-TiO2-Al2O3为原料，通过固相烧结法制得，其相对介电常数εr约23，陶瓷介质几何尺寸为170mm×15mm×1mm，银电极尺寸150mm×4mm，其输出电脉冲的宽度为11.3ns。为了防止平板结构脉冲形成线上下电极间发生沿面闪络(一种高电压击穿现象)，该固态脉冲功率装置将平板结构脉冲形成线中的介质板做得很宽(介质板宽15mm，银电极宽4mm)，减小了储能材料实际应用体积，影响了整个脉冲功率装置的小型化指标。此外，在需要拓展该固态脉冲功率装置的应用领域，该装置输出电脉冲的宽度也是不够的。 Compared with liquid media, solid energy storage media have the advantages of high dielectric constant and breakdown field strength (that is, high energy storage density), as well as low dielectric loss and high resistivity. Based on solid energy storage media transmission line The pulse power source device itself has the advantages of miniaturization, long life and stable performance. There are two common structures of pulse forming lines: coaxial structure and flat plate structure. The solid-state pulse forming line generally adopts a flat plate structure, such as the solid-state pulse power device developed by the Institute of Fluid Physics of the Chinese Academy of Engineering Physics [Chen Yi, Xia Liansheng, Wang Wei, et al. "Solid-state pulse power technology based on photoconductive switches and flat line", The planar pulse forming line designed in "Journal of Terahertz Science and Electronic Information", 2014, Vol.12, No.1, pp:32-36]. The device uses a pulse forming line with a flat plate structure, selects CaO-TiO 2 -Al 2 O 3 as the raw material, and is made by solid-state sintering method. Its relative permittivity ε r is about 23, and the geometric size of the ceramic medium is 170mm×15mm×1mm , The size of the silver electrode is 150mm×4mm, and the width of the output electric pulse is 11.3ns. In order to prevent surface flashover (a high-voltage breakdown phenomenon) between the upper and lower electrodes of the pulse forming line with a flat structure, the solid-state pulse power device makes the dielectric plate in the pulse forming line with a flat structure very wide (the width of the dielectric plate is 15mm, silver The electrode width is 4mm), which reduces the actual application volume of the energy storage material and affects the miniaturization index of the entire pulse power device. In addition, in the field of application where the solid-state pulse power device needs to be expanded, the width of the electric pulse output by the device is not enough.
同轴结构的脉冲形成线由于内电极包含在外电极之中，屏蔽效果较好，对周围的寄生耦合较小，也得到广泛的应用。实用新型专利“一种基于玻璃陶瓷介质的同轴固态脉冲形成线” (专利号：CN 203589443 U)，给出了一种基于玻璃陶瓷介质的同轴固态脉冲形成线，包括筒状玻璃陶瓷介质、内电极、外电极和半导体涂层，内外电极分别烧制在该筒状玻璃陶瓷介质的内外壁上，半导体涂层涂敷在内外电极以外的玻璃陶瓷介质表面；此外，S.K.Sharma，P.Deb和R.Shukla等人2011年在《科学仪器评论》(Review of Scientific Instruments)上发表的论文“一种紧凑型钡钛陶瓷脉冲形成线”中的脉冲形成线也采用了同轴结构【S.K.Sharma，P.Deb，R.Shukla，et al.Compact pulse forming line using barium titanate ceramic material.Review of Scientific Instruments，2011，82(11)，pp:115102-115102-3】。这两篇文献中提到的固态同轴脉冲形成线输出电脉冲的宽度T＝2(εr)1/2l/c(l为同轴脉冲形成线的轴向长度，c为真空中光速)，因此如果确定了形成线介质材料，只有通过增加形成线的轴向长度，才可以增加固态同轴脉冲形成线的输出电脉冲的宽度。 Since the inner electrode is included in the outer electrode, the pulse forming line of the coaxial structure has a better shielding effect and less parasitic coupling to the surroundings, and is also widely used. The utility model patent "a coaxial solid-state pulse forming line based on glass-ceramic medium" (patent number: CN 203589443 U) provides a coaxial solid-state pulse forming line based on glass-ceramic medium, including a cylindrical glass-ceramic medium , inner electrode, outer electrode and semiconductor coating, the inner and outer electrodes are respectively fired on the inner and outer walls of the cylindrical glass-ceramic medium, and the semiconductor coating is coated on the surface of the glass-ceramic medium other than the inner and outer electrodes; in addition, SK Sharma, P.Deb The pulse forming line in the paper "A Compact Barium-Titanium Ceramic Pulse Forming Line" published by R. Shukla et al in 2011 on "Review of Scientific Instruments" also adopts a coaxial structure [SKSharma, P.Deb, R.Shukla, et al.Compact pulse forming line using barium titanate ceramic material.Review of Scientific Instruments, 2011, 82(11), pp:115102-115102-3]. The width T=2(ε r ) 1/2 l/c (l is the axial length of the coaxial pulse forming line, and c is the speed of light in vacuum ), so if the dielectric material of the forming line is determined, only by increasing the axial length of the forming line can the width of the output electric pulse of the solid-state coaxial pulse forming line be increased.
鉴于脉冲功率技术小型化、长脉冲和长使用寿命的要求，目前小型化固态脉冲形成线面临输出电脉冲宽度不够的困难，而平板结构脉冲形成线又因上下电极间容易发生表面电闪络击穿限制其电压提升；同时，适用于脉冲功率装置的大体积陶瓷成型制备难度很大，而且固态介质的击穿场强会随着介质厚度的增加而显著下降，固态介质难以发挥其高击穿场强能力，所以单纯增加固态脉冲形成线长度和厚度并不能解决上述问题。因此，在固态介质的原有体积尺寸限制下，设计一种能够增加输出电脉冲宽度的固态脉冲形成线结构是本领域技术人员极为关注的技术问题。 In view of the requirements of miniaturization, long pulse and long service life of pulse power technology, the current miniaturized solid-state pulse forming line is facing the difficulty of insufficient output pulse width, and the pulse forming line with flat plate structure is prone to surface electrical flashover strikes between the upper and lower electrodes. At the same time, it is very difficult to form and prepare large-volume ceramics suitable for pulse power devices, and the breakdown field strength of solid-state dielectrics will decrease significantly with the increase of dielectric thickness, so it is difficult for solid-state dielectrics to exert their high breakdown Therefore, simply increasing the length and thickness of the solid-state pulse forming line cannot solve the above problems. Therefore, under the limitation of the original volume size of the solid medium, designing a solid-state pulse forming line structure capable of increasing the output electrical pulse width is a technical issue that is of great concern to those skilled in the art.
实用新型内容： Utility model content:
本实用新型要解决的技术问题是：针对现有固态脉冲形成线能够输出电脉冲的宽度有限，而且平板结构脉冲形成线上下电极间容易发生闪络限制其高电压运行能力的问题，提出一种适用于小型化高功率脉冲功率装置的螺旋结构同轴固态脉冲形成线。 The technical problem to be solved by the utility model is: Aiming at the limited width of the electric pulse that can be output by the existing solid-state pulse forming line, and the problem that flashover easily occurs between the upper and lower electrodes of the flat structure pulse forming line and limits its high-voltage operation capability, a Helical-structured coaxial solid-state pulse-forming wires suitable for miniaturized high-power pulse power devices.
本实用新型采用的技术方案为： The technical scheme that the utility model adopts is:
一种基于螺旋结构的同轴固态脉冲形成线，由筒状陶瓷介质、筒状金属外电极和筒状金属内电极组成，三者之间为同心排列，由内向外依次为筒状金属内电极、筒状陶瓷介质、筒状金属外电极。 A coaxial solid-state pulse forming line based on a helical structure, which is composed of a cylindrical ceramic medium, a cylindrical metal outer electrode and a cylindrical metal inner electrode. The three are arranged concentrically, and from the inside to the outside are the cylindrical metal inner electrodes. , Cylindrical ceramic dielectric, cylindrical metal outer electrode.
所述筒状陶瓷介质由氧化铝陶瓷制成，其轴向长度为l0，筒内外半径分别为r1、r2，(r2-r1)为该筒状陶瓷介质的壁厚，该筒状陶瓷介质的壁厚由脉冲形成线设计的耐压值决定；对于同轴固态脉冲形成线，为了保证输出电脉冲波形质量，一般轴向长度l0>>r2，通常取l0/r2≈10。 The cylindrical ceramic medium is made of alumina ceramics, its axial length is l 0 , the inner and outer radii of the cylinder are r 1 , r 2 , (r 2 -r 1 ) is the wall thickness of the cylindrical ceramic medium, and the The wall thickness of the cylindrical ceramic medium is determined by the design withstand voltage of the pulse forming line; for the coaxial solid pulse forming line, in order to ensure the quality of the output electric pulse waveform, the general axial length l 0 >>r 2 , usually l 0 / r 2 ≈10.
所述筒状金属内电极和筒状金属外电极分别通过烧制附着在所述筒状陶瓷介质的内壁和外壁，筒状金属内电极和筒状金属外电极的长度均为l1，为减少筒状金属内电极和筒状金属外电极边缘发生沿面击穿的可能，两个电极的两端距离筒状陶瓷介质的两端均有一定的距离l2，满足l2＝(l0-l1)/2≥1cm，l2为筒状陶瓷介质两端伸出金属内电极和金属外电极的长度，本实用新型取l2＝1cm。 The cylindrical metal inner electrode and the cylindrical metal outer electrode are respectively attached to the inner wall and outer wall of the cylindrical ceramic medium by firing, and the length of the cylindrical metal inner electrode and the cylindrical metal outer electrode are both l 1 , in order to reduce The edge of the cylindrical metal inner electrode and the cylindrical metal outer electrode may have surface breakdown, and the two ends of the two electrodes are at a certain distance l 2 from the two ends of the cylindrical ceramic medium, satisfying l 2 =(l 0 -l 1 )/2≥1cm, l 2 is the length of the metal inner electrode and the metal outer electrode protruding from both ends of the cylindrical ceramic medium, and the utility model takes l 2 =1cm.
所述筒状金属外电极上加工有螺旋凹槽，所述螺旋凹槽的螺距为p，螺旋凹槽的宽度为δ，螺旋凹槽的深度需保证磨去外电极上的原有金属层。经验上，要求(p-δ)>4mm，以减少该脉冲形成线放电时螺旋面的匝间发生电击穿；要求δ/(p-δ)>3，防止脉冲形成线的电磁耦合；色 散条件要求螺旋电极的轴向长度l1>>p，本实用新型取l1/p≈10。 A helical groove is processed on the cylindrical metal outer electrode, the pitch of the helical groove is p, the width of the helical groove is δ, and the depth of the helical groove needs to ensure that the original metal layer on the outer electrode is ground off. Empirically, (p-δ)>4mm is required to reduce the electrical breakdown between turns of the helical surface when the pulse-forming line is discharged; δ/(p-δ)>3 is required to prevent electromagnetic coupling of the pulse-forming line; dispersion Conditions require that the axial length of the spiral electrode l 1 >>p, the utility model takes l 1 /p≈10.
本实用新型具有以下技术效果： The utility model has the following technical effects:
1.采用同轴结构，可以减小脉冲形成线电极间沿面闪络击穿的可能； 1. The coaxial structure can reduce the possibility of surface flashover breakdown between pulse forming line electrodes;
2.金属外电极采用螺旋结构，可以增加同样体积尺寸同轴固态形成线输出电脉冲宽度，有利于缓解在大体积储能陶瓷介质形成线制备的困难，促进整个脉冲功率装置的小型化，长脉冲和长寿命运行能力。 2. The metal outer electrode adopts a spiral structure, which can increase the output electric pulse width of the coaxial solid-state forming line with the same volume size, which is conducive to alleviating the difficulty of preparing the forming line in the large-volume energy storage ceramic medium, and promoting the miniaturization of the entire pulse power device, and the long-term Pulse and long life operation capability.
附图说明： Description of drawings:
图1为背景技术专利号为CN 203589443U的实用新型专利“一种基于玻璃陶瓷介质的同轴固态脉冲形成线”中给出的一种基于玻璃陶瓷介质的同轴固态脉冲形成线结构图； Fig. 1 is a structure diagram of a coaxial solid-state pulse forming line based on a glass-ceramic medium given in the utility model patent "A coaxial solid-state pulse forming line based on a glass-ceramic medium" of the background technology patent No. CN 203589443U;
图2为实用新型所述螺旋结构同轴固态脉冲形成线结构示意图； Fig. 2 is a structural schematic diagram of the helical structure coaxial solid-state pulse forming line described in the utility model;
图3为实用新型所述螺旋结构同轴固态脉冲形成线剖视图及具体尺寸示意图； Fig. 3 is a cross-sectional view of the coaxial solid-state pulse forming line of the helical structure described in the utility model and a schematic diagram of specific dimensions;
图4为实用新型所述同轴固态脉冲形成线的脉冲形成实验电路图； Fig. 4 is the pulse forming experiment circuit diagram of the coaxial solid-state pulse forming line described in the utility model;
图5为国防科技大学设计的基于螺旋结构的同轴氧化铝陶瓷介质脉冲形成线产生的50ns脉宽电压波形。 Figure 5 shows the 50ns pulse width voltage waveform generated by the coaxial alumina ceramic dielectric pulse forming line based on the helical structure designed by the National University of Defense Technology.
具体实施方式： Detailed ways:
图1为实用新型专利“一种基于玻璃陶瓷介质的同轴固态脉冲形成线”给出的一种基于玻璃陶瓷介质的同轴固态脉冲形成线结构图，该脉冲形成线包括筒状玻璃陶瓷介质1、内电极2、外电极3和半导体涂层4、5，内电极2烧制在沿筒状玻璃陶瓷介质1的轴向的内壁的中间部位，外电极3烧制在沿筒状玻璃陶瓷介质1的轴向的外壁的中间部位，半导体涂层4、5涂敷在管状玻璃陶瓷介质1两端部的留边部分。 Figure 1 is a structural diagram of a coaxial solid-state pulse forming line based on a glass-ceramic medium given in the utility model patent "a coaxial solid-state pulse forming line based on a glass-ceramic medium". The pulse-forming line includes a cylindrical glass-ceramic medium 1. The inner electrode 2, the outer electrode 3 and the semiconductor coating 4, 5, the inner electrode 2 is fired in the middle of the inner wall along the axial direction of the cylindrical glass-ceramic medium 1, and the outer electrode 3 is fired in the middle of the inner wall along the cylindrical glass-ceramic medium 1. In the middle of the axially outer wall of the medium 1 , the semiconductive coatings 4 and 5 are applied to the margins at both ends of the tubular glass-ceramic medium 1 .
图2为本实用新型所述螺旋结构同轴固态脉冲形成线结构示意图，图3为该脉冲形成线剖视图及具体尺寸示意图，本实用新型所述螺旋结构同轴固态脉冲形成线包括筒状陶瓷介质1，筒状金属内电极2，筒状金属外电极3。所述的筒状陶瓷介质轴向长度为l0，筒内外半径分为r1、r2，筒状金属外电极上加工出螺旋凹槽的螺距和螺旋凹槽宽度分别为p、δ，内外电极的轴向长度均为l1，内外电极两端距离筒状陶瓷介质两端的距离均为l2。 Fig. 2 is a structural schematic diagram of the helical structure coaxial solid-state pulse forming line of the present invention, and Fig. 3 is a cross-sectional view of the pulse forming line and a schematic diagram of specific dimensions. The helical structure coaxial solid-state pulse forming line of the present invention includes a cylindrical ceramic medium 1. Cylindrical metal inner electrode 2, cylindrical metal outer electrode 3. The axial length of the cylindrical ceramic medium is l 0 , the internal and external radii of the cylinder are divided into r 1 and r 2 , and the pitch and width of the spiral grooves processed on the cylindrical metal outer electrode are p and δ respectively. The axial length of the electrodes is l 1 , and the distance between the two ends of the inner and outer electrodes and the two ends of the cylindrical ceramic medium is l 2 .
图4为本实用新型所述同轴固态脉冲形成线的脉冲形成实验电路图，研究了螺旋结构同轴固态脉冲形成线的脉冲输出特性。图中，TL为该螺旋结构同轴固态脉冲形成线，V0为直流电源2，S为主开关，Rc为充电大阻值电阻，Rload为无感电阻负载，负载区连线尽量紧凑。脉冲形成线的工作过程是一个电能量在时间上的压缩过程。直流电源给该螺旋结构同轴固态脉冲形成线充电，此时主开关处于断开状态。当充电完成后，主开关由断开状态转为导通，此时在负载上可以获得到一个纳秒级别的电压方波。 Fig. 4 is a pulse forming experiment circuit diagram of the coaxial solid state pulse forming line of the present invention, and the pulse output characteristics of the helical structure coaxial solid state pulse forming line are studied. In the figure, TL is the coaxial solid-state pulse forming line of the helical structure, V0 is the DC power supply 2, S is the main switch, Rc is the charging resistor with large resistance, Rload is the non-inductive resistive load, and the wiring in the load area is as compact as possible. The working process of the pulse forming line is a process of compressing electric energy in time. A DC power supply charges the helical coaxial solid-state pulse forming line while the main switch is off. When the charging is completed, the main switch is turned from off to on, and a nanosecond-level voltage square wave can be obtained on the load at this time.
图5为国防科大设计的利用螺旋结构的同轴氧化铝陶瓷介质脉冲形成线产生50ns脉宽的电压波形，烧制有内外金属电极的同轴氧化铝陶瓷介质可直接向陕西宝光陶瓷科技有限公司定做，该陶瓷脉冲形成线的主要参数如下：筒状氧化铝陶瓷介质轴向长度为l0＝340mm，筒内外半径分为r1＝26.5mm、r2＝33.5mm，金属外电极上螺旋凹槽的螺距和螺旋凹槽宽度分别为p＝25mm、δ＝5mm，l2＝1cm。螺旋凹槽深度为2mm，远大于仅有数十微米的附着金属层 厚度(将凹槽深度做到毫米量级是受到了磨槽工艺的限制，以及尽量减少金属化工艺烧结时金属会少量渗透进入陶瓷的影响)。该螺旋线在负载上产生的电压方波如图5所示，横坐标表示时间，纵坐标表示电压。图5所示该方波脉冲的半高宽为50ns。 Figure 5 shows the voltage waveform with a pulse width of 50 ns generated by the coaxial alumina ceramic dielectric pulse forming line with a spiral structure designed by the University of National Defense Science and Technology. The coaxial alumina ceramic dielectric with internal and external metal electrodes can be directly supplied to Shaanxi Baoguang Ceramic Technology Co., Ltd. Customized by the company, the main parameters of the ceramic pulse forming line are as follows: the axial length of the cylindrical alumina ceramic medium is l 0 = 340mm, the inner and outer radii of the cylinder are divided into r 1 = 26.5mm, r 2 = 33.5mm, and the spiral on the metal outer electrode The pitch of the groove and the helical groove width are p=25mm, δ=5mm, l 2 =1cm, respectively. The depth of the spiral groove is 2mm, which is far greater than the thickness of the attached metal layer which is only tens of microns (the depth of the groove is on the order of millimeters is limited by the grinding groove process, and minimizes the metal penetration during sintering of the metallization process Into the impact of ceramics). The square wave of voltage generated by the helix on the load is shown in Figure 5, where the abscissa represents time and the ordinate represents voltage. The FWHM of the square wave pulse shown in Figure 5 is 50ns.
假如没有螺旋结构，利用公式T＝2(εr)1/2l/c，计算同样尺寸陶瓷介质同轴脉冲形成线的输出电脉冲宽度(氧化铝陶瓷相对介电常数取εr＝9.3)，得到其脉宽仅约为7ns。由此可见，本实用新型固态脉冲形成线采用螺旋结构，能够大幅增加脉冲形成线输出电脉冲的宽度，同时不增加脉冲形成线的体积，从而保证脉冲形成线的小型化。 If there is no helical structure, use the formula T=2(ε r ) 1/2 l/c to calculate the output electrical pulse width of the same size ceramic dielectric coaxial pulse forming line (the relative dielectric constant of alumina ceramics is ε r =9.3) , and its pulse width is only about 7ns. It can be seen that the solid-state pulse forming wire of the present invention adopts a helical structure, which can greatly increase the width of the output electric pulse of the pulse forming wire without increasing the volume of the pulse forming wire, thereby ensuring the miniaturization of the pulse forming wire.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712744A (en) * | 2016-12-14 | 2017-05-24 | 中国人民解放军国防科学技术大学 | Semicircular coaxial high-power pulse formation line |
| CN105306016B (en) * | 2015-09-18 | 2017-12-15 | 西北核技术研究所 | Coaxial spiral reentries pulse-forming line |
| CN107565938A (en) * | 2017-09-08 | 2018-01-09 | 中国人民解放军国防科技大学 | A solid state high power pulse forming wire with a vortex wire electrode structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306016B (en) * | 2015-09-18 | 2017-12-15 | 西北核技术研究所 | Coaxial spiral reentries pulse-forming line |
| CN106712744A (en) * | 2016-12-14 | 2017-05-24 | 中国人民解放军国防科学技术大学 | Semicircular coaxial high-power pulse formation line |
| CN106712744B (en) * | 2016-12-14 | 2020-01-24 | 中国人民解放军国防科学技术大学 | A semicircular coaxial high-power pulse forming line |
| CN107565938A (en) * | 2017-09-08 | 2018-01-09 | 中国人民解放军国防科技大学 | A solid state high power pulse forming wire with a vortex wire electrode structure |
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