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本文介紹的电火花声源是新研制的深地层剖面仪中主要組成部分。它由控制台,高压柜,四台贮能器(每台贮能8500焦耳),配电箱,警控箱,放电电缆及水下放电电极等組成,并具有比较完善的控制、监視、保护和报警装置,故系统操作维护方便,使用安全可靠。整个系统的最大贮能为34000焦耳,工作电压最高可达9千伏,最大放电电流为2万安培以上。水下放电电极是一种特制的“尾翼”型等间距同轴电极,这种电极結构,放电特性稳定,电声转换效率较高,并且装拆方便,便于拖曳。为了研究水下放电的声辐射特性与声源的电参数扣結构参数的关系,在海上进行了一系列測量,定量地得出了水下火花放电的电声效率和所辐射的声能谱级与放电电极的结构形式、工作电压、贮能容量、电极沉放深度等因素的关系。为今后的工程设计提供了一定的依据。
This article describes the spark source is a newly developed deep section profiler in the main part. It consists of console, high voltage cabinet, four energy storage devices (each energy storage 8500 joule), distribution box, alarm control box, discharge cable and underwater discharge electrode and other components, and has a relatively complete control, monitoring, Protection and alarm device, so the system is easy to operate and maintain, safe and reliable. The maximum energy storage for the entire system is 34,000 Joules, with operating voltages up to 9 kV and maximum discharge currents of 20,000 amperes or more. Underwater discharge electrode is a kind of special “tail” type equidistance coaxial electrode, this electrode structure, stable discharge characteristics, electroacoustic conversion efficiency, and easy assembly and disassembly, easy towing. In order to study the relationship between the acoustic emission characteristics of underwater discharge and the parameters of acoustic parameters of sound sources, a series of measurements were carried out at sea, and the electroacoustic efficiency and radiated sound energy spectrum of underwater spark discharge And discharge electrode structure, working voltage, energy storage capacity, electrode depth and other factors. For the future engineering design provides a certain basis.