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spark gap 【電學】放電器,火花隙。

spark guard

The minimum requirement for sensitivity shall be such that a succession of not less than 20 breakdowns of the spark gap shall cause the fault indicator to register neither more nor less than one count per breakdown when the spark gap is open and of the length shown above , with the current limiting impedance in series with the gap 在最底靈敏度測試的時候,應先接入上述要求的人工擊穿裝置, ,啟動人工擊穿裝置,使金屬板與金屬針間的火花間隙被連續擊穿20次,要求火花試驗機的擊穿計數器應記錄20次,對每次擊穿都應準確無誤地計數,不應多計也不應少計。

The results provide a theoretic basis to research the multi - pulse operation of high power spark gap . as the breakdown mechanism is concerned , the influence of rough electrode on the v / p ( switch breakdown voltage / gas pressure ) curve is analyzed originally using breakdown possibility . the requirements of flat v / p curve are presented , which provides a theoretical basis for controlling and utilizing the curve 對氣體火花開關的擊穿機理,創新的利用擊穿概率分析了粗糙電極對氣體火花開關v / p曲線影響的物理機制,給出了利用細小結構構造平穩v / p (開關擊穿電壓/氣體壓強)曲線的條件,為實驗中控制和利用該曲線提高氣體火花開關的多脈沖運行能力提供了理論基礎。

Firstly , the paper discusses the characters , principles of excimer laser , and study on pulse discharge process . secondly , for the purpose of designing excimer laser , i spent a lot of time to researsh and finish electrode designing , reducing circuit inductance , spark gap designing , ns discharge , uv preionization , glow discharge 本論文首先對準分子激光特點,原理,脈沖放電進行了評述,其次,以試制xecl準分子激光器為目的,探索并完成了電極設計、回路電感減小方法、火花開關設計、 ns陡前沿放電、紫外預電離、輝光放電、脈沖功率技術研究。

In the studying of the dielectric recovery mechanism , the dielectric process of high - power repetitive gas switches was analyzed theoretically , the conditions of full recovery of dielectric capability , and some qualitative results were obtained . then , a dynamic mathematical model of the dielectric recovery process was made , and a group of equations , including mass conservation equation , momentum conservation equation , energy conservation equation and state equation , were built . also , a mathematical model of the dielectric recovery process of a axially - blown gas spark gap , and a group of simplified hydromechanical equations were made 在絕緣恢復機理研究中,首先對高功率重復氣體火花開關絕緣恢復過程進行了理論分析,提出了開關絕緣強度完全恢復的判據,得到了一些定性結論;然后建立了一般吹氣式氣體火花開關絕緣恢復的動態數學模型,得到了包括質量守恒方程、動量守恒方程、能量守恒方程和狀態方程等的一個完備方程組;建立了縱吹式氣體開關絕緣恢復過程的數學模型,得到了一個簡化流體力學方程組。

All analysis and simulations results indicate several methods improving the insulation recovery of spark gap switch : ( 1 ) using the gas with good thermal conductivity , such as h2 and sf6 ; ( 2 ) using the gas flow ; ( 3 ) utilizing the v / p cure ; ( 4 ) modifying the geometry and size of the electrode ; ( 5 ) using the gas with good electronegativity , such as sf6 . some experiments on the multi - pulse operation of high power spark gap switch are carried out . the insulation recoveries of switch without and with gas flow are both investigated 結合理論分析和模擬結果,提出了氣體火花開關多脈沖運行特性可采用如下方法: ( 1 )使用導熱性能好的氣體,如h2 、 sf6等; ( 2 )采用吹氣的方法; ( 3 )增大氣壓,在電極表面增加細小結構,構造平穩的v / p曲線; ( 4 )改良開關電極結構和尺寸,采用奶頭-半球結構的電極; ( 5 )使用電負性強的氣體作為開關絕緣氣體,如sf6 。

This saturation wiii effect on opto - couplers “ isolation anddigitai inputs “ vaiidity the solution for opto - couplers “ saturation is put fotward in thispaper . lt is pointed out that layout the transient suppressors for surges in power suppiypqrt and communication signai line of protective reiay , such as varistors ( voitagedependant resistors ) , zeners and spark gaps ( gas discharge tubes ) is necessary . the asynchronous seriai i / o ( uart ) mode in the embedded microprocessor isdiscussed 4指出微機保護裝置的直流電源、通信等回路需要設置抑制浪涌沖擊的過電壓保護器件,如氣體放電管、壓敏電阻、抑制二極管等。 5提出在快速瞬變騷擾的作用下,光耦器件將產生“瞬時飽和”現象,并提出解決方案。

The minimum requirement for sensitivity shall be such that a succession of not less than 20 breakdowns of the spark gap shall cause the fault indicator to register neither more nor less than one cunt per breakdown when the spark gap is open and is of the length shown above , with the current limiting impedance in series with the gap 在最底靈敏度測試的時候,應先接入上述要求的人工擊穿裝置,啟動人工擊穿裝置,使金屬板與金屬針間的火花間隙被連續擊穿20次,要求火花試驗機的擊穿計數器應記錄20次,對每次擊穿都應準確無誤地計數,不應多計也不應少計。

Water dielectric pulse power modulator has been widely applied because of its merits of high energy storage density , compactness , and capability to drive low impedance high power microwave sources . research for multi - pulse operation of high power spark gap switch with high current and comprehending its physical properties are the basis to study multi - pulse operation or repetitive operation of water dielectric pulse power modulator 水介質脈沖功率調制器具有儲能密度高,結構緊湊、與低阻抗微波源較好匹配的特點,因此得到廣泛的應用,但是受到高功率、大電流氣體開關的絕緣恢復的影響,水介質等低阻抗脈沖功率調制器的重復頻率運行或多脈沖運行受到較大的限制。

The product is widely applied to telecommunication fitting exchanging equipments , telephone sets , cable televisions , computers , modem , various electronic , facilities , equipments , household electrical appliances , terminals of transmission units , electrical equipment and surge protection for power distribution system and so on . switching spark gaps have more extensive use 產品被廣泛應用于電信裝置交換設備電話機有線電視計算機調制解調器及各類電子設備儀器家用電器,傳輸裝置終端,電氣設備及配電系統電涌保護等方面,開關放電管主要用于點火裝置,例如汽車氙氣燈hid ,燃氣爐具,照明燈具等。

A series of multi - pulse experiments are performed at breakdown voltage up to 400kv , peak current up to 30ka with an interval of 5ms , which shows spark gap switch could be obtained good insulation recovery in several milliseconds under the condition of water dielectric pulse power modulator with low load 在擊穿電壓400kv ,峰值電流30ka ,脈寬40ns的工作參數下,采用吹氣的辦法(氣流速度30m / s ) ,使氣體火花開關多脈沖運行間隔達到5ms ,實驗結果與理論估計相符。

With respect to the gas status recovery in the spark gap , the conduction and convection of hot gas are simulated numerically . the decay of residual charge particles is analyzed and simulated also . the main factors affecting the insulation recovery velocity of gas are analyzed and discussed 對電極間隙內氣體狀態的恢復,數值模擬了炙熱氣體的傳導和對流過程,分階段的討論和模擬了帶電粒子的消逝過程,分析了影響電極間隙內氣體狀態恢復的主要因素。

Our company is ready to design and manufacture all kinds of discharge tubes and switching spark gaps of different outline dimensions , different current grades , different performance index and operation requirements , different specifications and models for new and old customers 我公司愿意為新老客戶設計制造不同外型尺寸不同電流等級不同性能指標及使用要求不同規格型號的各種類型放電管及開關放電器。

In the thesis , the insulation recovery properties of spark gap switch are investigated through theoretic analyses and numerical calculation , and the influence of gas flow on the insulation recovery of switch is studied experimentally 本文從理論分析、數值計算等方面研究了氣體火花開關的絕緣恢復特性,實驗研究了氣流對火花開關恢復速度的影響,其研究結果為火花開關的多脈沖運行奠定了堅實理論基礎。

Nowadays , the switches which are being studied or applied , such as gas spark gap , thyratron and ignitron , etc , are of different structures , operating principles , advantages and disadvantages , and are applied in various situations and fields 目前處于試驗中或者投入實際應用的開關元件很多,如火花放電間隙、閘流管、引燃管等,它們有不同的結構、原理和優缺點,應用在不同的場合和領域。

Vacuum switchgear tubes , gas spark gaps and pseudospark tubes are all switches of gas discharge theory , and have the good qualities of high withstanding voltage , high amplitude of current and high power 真空開關管、火花開關、偽火花放電管都是利用氣體放電理論的開關元件,具有高耐壓能力、高峰值電流、功率大等優點。

Emtric exhibits good oxidation stability even under the conditions of elevated temperatures at the spark gap and exposure to air found in emtric process Emtric具有極佳的抗氧化性,使得它在放電間隙的高溫與曝氣環境下,仍能保持穩定。

The french lightning protection association cautions against the use of spark gap protectors in most applications 法國雷擊防護協會提醒在大部分場合謹慎使用火花間隙保護器。

Measuring spark gap 測量球隙

Safety spark gap 安全火花間隙