本文選題：空氣放電　切入點(diǎn)：等離子體　出處：《中國(guó)科學(xué)院研究生院(上海技術(shù)物理研究所)》2016年博士論文

【摘要】：氣體高壓放電等離子體是國(guó)際研究的熱點(diǎn)。通過氣體放電可以產(chǎn)生等離子體,可以應(yīng)用于照明、納米技術(shù)、生物醫(yī)學(xué)、環(huán)境保護(hù)、表面材料等領(lǐng)域,但一個(gè)大氣壓下空氣中電弧/電暈的產(chǎn)生會(huì)對(duì)電力系統(tǒng)、高電壓電氣設(shè)備造成電力流失和持續(xù)的破壞,故大氣壓下空氣放電等離子體的產(chǎn)生有利有弊,因此對(duì)大氣壓下空氣放電等離子體目標(biāo)開展關(guān)于其參數(shù)和特性的研究,是很有必要的。本文的主要研究?jī)?nèi)容,針對(duì)大氣壓下空氣高電壓放電等離子體目標(biāo),分析了其生成的原理,概述了湯森理論和流注理論,闡述了其在大氣壓下放電的過程是一致的,從湯森放電簡(jiǎn)單的空氣擊穿,迅速發(fā)展成穩(wěn)定的自持式放電。通過自行搭建的空氣高壓放電目標(biāo)的紫外光譜探測(cè)系統(tǒng),開展對(duì)目標(biāo)的紫外光譜實(shí)驗(yàn),完成了200nm-1000nm之間的光譜測(cè)量,分析并發(fā)現(xiàn)了空氣高壓放電等離子體(電弧/電暈)的光譜分布主要集中在200nm-400nm的紫外波段,并且其發(fā)射光譜的特征峰值與氮?dú)怆x子激發(fā)態(tài)的發(fā)射光譜特征密切相關(guān)。其次,開展了關(guān)于放電等離子體目標(biāo)的模擬仿真,通過構(gòu)建三個(gè)不同的結(jié)構(gòu),基于三大基本物理原理模型,獲得大氣壓下放電的微觀過程,包括氮?dú)怆x子激發(fā)態(tài)N2+的質(zhì)量密度分布等。基于上述分析,針對(duì)空氣高壓放電目標(biāo),提出了紫外多光譜的成像技術(shù)手段,搭建了紫外多光譜的成像系統(tǒng)總體方案,其中包含了設(shè)計(jì)帶有濾光輪的光學(xué)子系統(tǒng),對(duì)比選型后選用了紫外增強(qiáng)型背照減薄式CCD探測(cè)器器件,設(shè)計(jì)了低噪聲高密集度的電路和FPGA驅(qū)動(dòng)邏輯時(shí)序設(shè)計(jì),搭載設(shè)計(jì)了三速以太網(wǎng)中的GigE數(shù)據(jù)傳輸手段,設(shè)計(jì)實(shí)現(xiàn)了基于WinpCap庫的以太網(wǎng)數(shù)據(jù)幀接收的上位機(jī)軟件和大數(shù)據(jù)分包回放軟件。完成了系統(tǒng)的安裝、光校,獲得較好的圖像質(zhì)量,通過氙燈積分球輻射定標(biāo)方法,并獲得系統(tǒng)目標(biāo)反演的模型。使用不同的高壓放電目標(biāo)發(fā)生器,針對(duì)電弧/電暈開展了目標(biāo)成像實(shí)驗(yàn),反演得到目標(biāo)的輻亮度,并將系統(tǒng)響應(yīng)與放電電壓值、空間間隙距離和積分時(shí)間的關(guān)系進(jìn)行了相關(guān)研究。本文的創(chuàng)新點(diǎn)包括:1)在系統(tǒng)設(shè)計(jì)的規(guī)劃上,針對(duì)成像目標(biāo)從簡(jiǎn)單的發(fā)光目標(biāo)提升到空氣放電低溫等離子體的高度,從放電目標(biāo)的產(chǎn)生過程和原理去解析目標(biāo)的紫外輻射特性,完成了對(duì)空氣高壓放電目標(biāo)的紫外光譜探測(cè)與分析,并利用空氣放電過程的三大物理原理級(jí)模型(粒子動(dòng)理學(xué)、流體力學(xué)及混合模型),通過數(shù)值仿真軟件進(jìn)行有限元分析仿真,以此得到與放電過程發(fā)射光譜相吻合的結(jié)果�；诮�(jīng)典的棒板模型構(gòu)造的非均勻電場(chǎng)分布,探索性地提出了同樣為非均勻電場(chǎng)分布的棒棒模型,提出了一維結(jié)構(gòu)和二維的結(jié)構(gòu),完成了對(duì)應(yīng)的仿真。獲得了空氣放電分布強(qiáng)度仿真結(jié)果,與成像結(jié)果相印證。2)提出了適用于空氣高壓放電目標(biāo)的紫外多光譜成像系統(tǒng)整體方案,并研制了原理樣機(jī),包含240nm-280nm,280nm-325nm,315nm-340nm三個(gè)紫外波段,充分利用了空氣放電目標(biāo)的紫外發(fā)射光譜特征,獲取多譜段成像信息;同時(shí)具備在不同應(yīng)用場(chǎng)合中對(duì)指定的紫外目標(biāo)進(jìn)行紫外多光譜的成像實(shí)驗(yàn)研究。其中主要包括,帶有濾光輪的光學(xué)選擇系統(tǒng),帶有低噪聲高靈敏度的紫外增強(qiáng)型背照減薄式CCD探測(cè)器,高效緊湊的電子電路及FPGA驅(qū)動(dòng)技術(shù),符合數(shù)據(jù)傳輸需求、保存和圖像顯示的多線程上位機(jī)軟件以及大數(shù)據(jù)分包回放軟件。3)針對(duì)空氣高壓放電目標(biāo)(電弧/電暈)完成了紫外多光譜的成像實(shí)驗(yàn),對(duì)不同結(jié)構(gòu)模型不同放電發(fā)生器下產(chǎn)生的電弧目標(biāo)成像,研究分析了關(guān)于電壓值、空氣間隙、積分時(shí)間的關(guān)系,與仿真結(jié)果相吻合。通過氙燈積分球定標(biāo)后的目標(biāo)輻亮度反演模型,得到放電等離子體目標(biāo)的輻亮度。為后續(xù)開展空氣高壓放電更為深入的研究奠定了堅(jiān)實(shí)的紫外相關(guān)技術(shù)和實(shí)驗(yàn)基礎(chǔ)。
[Abstract]:High pressure gas discharge plasma is an international research hotspot. Through the gas discharge plasma can be generated, can be used in lighting, nanotechnology, biomedical, environmental protection, field surface material, but a large pressure in the air to produce power system / corona arc, high voltage electrical equipment caused by power loss and sustained the destruction of air discharge plasma under atmospheric pressure generated to carry out research on the There are both advantages and disadvantages., therefore the parameters and characteristics of the target air plasma discharge at atmospheric pressure, is very necessary. The main contents of this paper, aiming at the goal of high voltage air discharge plasma at atmospheric pressure, analyzes its formation principle, summarizes the Townsend the theory and the streamer theory, expounds its discharge under atmospheric pressure process is consistent, from the air breakdown Townsend simple, rapid development into a stable A self-contained discharge. The UV spectrum through the high-pressure air discharge target to build their own detection system, to carry out the experimental UV spectra of target, complete spectral measurements between 200nm-1000nm, analyzed and found the high-pressure air discharge plasma (ARC / corona) spectral distribution mainly concentrated in the ultraviolet band 200nm-400nm, emission spectrum the characteristics and the emission spectrum of nitrogen ion characteristic peak and excited states are closely related. Secondly, to carry out the simulation of discharge plasma target, through the construction of three different structures, three basic physical principle based on the model, obtain the microscopic process of discharge under atmospheric pressure, including the excited state N2+ nitrogen ion mass density distribution. Based on the above analysis, in view of the high-pressure air discharge, put forward the means of UV imaging technology in multi spectral imaging system is built, the total ultraviolet multispectral Scheme, including design subsystem with optical filter wheel, after the comparison and selection of UV enhanced thin backlight type CCD detector device, designed a low noise high density circuit and FPGA logic timing design, GigE data transmission means three speed Ethernet Design equipped with design and implementation the PC software of Ethernet data frames received by the WinpCap library and data packet replay based software. Completed the system installation, calibration, good image quality, calibration method by integrating sphere radiation and xenon lamp, get the system object inversion model. Using the high voltage discharge target generator for arc / different. Corona carried out target imaging experiments, inversion to obtain the target radiance, and the system response and discharge voltage, gap distance and space integral time was studied. The innovation of this paper Include: 1) in the system design plan, according to the imaging target from simple light to air target plasma level, from ultraviolet radiation properties and the principle to resolve target discharge targets, completed the UV detection and analysis of the high-pressure air discharge target, and use three high level physical principle model of air discharge process (particle kinetic theory, fluid mechanics and mixture model), finite element simulation analysis by numerical simulation software, in order to get and discharge emission spectrum. The results. Based on the classical rod plate model constructed non uniform electric field distribution, is put forward for the same non uniform electric field distribution model of bang bang, put forward the structure of one-dimensional and two-dimensional structure, completed the corresponding simulation. The simulation results of air discharge intensity distribution was obtained, and the imaging result confirmed by.2 The UV) is applicable to the high-pressure air discharge target multi spectral imaging system overall scheme, and developed the principle prototype, including 240nm-280nm, 280nm-325nm, 315nm-340nm three UV band, make full use of the ultraviolet air discharge target emissivity spectral features, obtaining multi spectral imaging information; experimental study on imaging with purple outside of the specified ultraviolet target in different applications in multispectral. Which mainly include the system with optical filter wheel selection, with low noise and high sensitivity of UV enhanced thin backlight type CCD detector, high efficient and compact electronic circuit and FPGA drive technology, meet the needs of data transmission, multi thread the PC software and save the image display and data playback software package.3) for the high-pressure air discharge target (ARC / corona) imaging ultraviolet multispectral experiments on different structure The target model of different imaging arc discharge generator, analysis on voltage, air gap, the relationship between integral time, consistent with the simulation results. The target radiance inversion model of integral sphere calibration after xenon lamp, by discharge plasma target radiance. UV and related technology laid a solid experimental basis the further research for the following high-pressure air discharge.

【學(xué)位授予單位】：中國(guó)科學(xué)院研究生院(上海技術(shù)物理研究所)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：O461;O53

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 高波,張寒虹,張弛;水中高壓放電氣泡的實(shí)驗(yàn)研究[J];物理學(xué)報(bào);2003年07期

2 葉明;;閃躍的精靈——記省科技館的高壓放電表演[J];科技風(fēng);2014年07期

3 閆東;卞德存;闕夢(mèng)輝;;水中高壓放電基本現(xiàn)象分析[J];煤炭技術(shù);2014年07期

4 順迎;;預(yù)燃燈壽命更長(zhǎng)[J];激光與紅外;1973年01期

5 張?chǎng)?黃勇;黃宗波;王勛年;沈志洪;;“高壓放電”對(duì)空氣作用的試驗(yàn)研究[J];實(shí)驗(yàn)流體力學(xué);2011年01期

6 盧順祥,栗保明,吳軒;電熱加速器中毛細(xì)管高壓放電特性分析[J];南京理工大學(xué)學(xué)報(bào);1998年04期

7 楊保初，趙文正，張茂華;高壓放電對(duì)人體生物效應(yīng)影響的研究[J];中國(guó)輻射衛(wèi)生;1994年03期

8 李保春;董有爾;;高壓放電綜合實(shí)驗(yàn)儀的設(shè)計(jì)[J];實(shí)驗(yàn)技術(shù)與管理;2006年04期

9 張U，

本文編號(hào)：1664433