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海洋电磁探测方法被广泛应用于地学基础研究和海底资源调查中.用来采集海底电磁场信号的海洋电磁接收机,其正常释放和回收是获取采集数据的基本保障,而回收过程离不开声学释放装置.目前的声学释放装置驱动方式大多为旋转电机驱动,动密封是个技术瓶颈,另外大都依赖进口,成本高且笨重.通过理论的计算、仿真和实验,本文提出了一种基于无密封水下电磁铁的新型声学释放装置,以期应用于海洋电磁接收机当中.在装置中,选用直流框架形螺管式电磁铁作为机械部分的驱动部件;使用高容量续流电容增大电磁铁线圈中的瞬间驱动电流及输出驱动力;采用连杆机构使机械释放装置在电磁铁驱动力下能够释放1 t以上载荷;采用无密封的方式将电磁铁及机械释放部件直接置于海水当中,无需处理动密封问题,减小了承压密封舱的体积,使装置简单灵巧.经理论分析和盐水槽实验验证,所提方案在盐水中可实施.相对于传统的水下声学释放装置,新型水下声学释放装置具有重量和体积小、成本低、控制简单、无密封等优势,值得深入研究,也将为海洋仪器设备的回收提供另外一种选择.
Marine electromagnetic detection methods are widely used in basic research of geosciences and the investigation of the seafloor resources.The marine electromagnetic receiver used to collect signals of the seafloor electromagnetic field, the normal release and recovery is the basic guarantee for acquisition of data, and the recovery process can not be separated from the acoustic release Devices.At present, most of the acoustic release devices are driven by rotating electrical machines, the dynamic sealing is a technical bottleneck, and most of them are imported.It has high cost and heavy weight.According to the theoretical calculation, simulation and experiment, Electromagnet’s new acoustic release device, with a view to be used in marine electromagnetic receiver among them, the choice of DC frame-shaped solenoid solenoid as a mechanical part of the drive components; the use of high-capacity freewheeling capacitors to increase the solenoid coil Instantaneous driving current and output driving force; the connecting rod mechanism enables the mechanical release device to release more than 1 t load under the driving force of the electromagnet; the electromagnet and the mechanical releasing component are directly placed in the seawater in a non-sealing manner, Sealing problems, reducing the size of the pressure-tight capsule, the device is simple and smart. Theoretical analysis and Compared with the traditional underwater acoustic release device, the new underwater acoustic release device has the advantages of small weight, small volume, low cost, simple control and no seal, which deserves further study , Will also provide an alternative to the recovery of marine equipment.