外输软管无线报警装置可行性研究

The feasibility study of wireless alarm system used on offloading hose

目前中海油在渤海湾的FPSO使用的外输软管基本都是双层的,双层外输软管相对于单层外输软管具备第一层管体破裂后通过第二层管体的保护防止泄漏的作用,双层软管法兰两端装有第一层管体泄漏报警装置[1],目的是提前告知用户第一层管体已经损坏需要更换。目前该报警装置主要为电子式和机械式两种,当第一层管体泄露后压力传递到报警装置激活报警装置闪烁或者变色。但是由于外输软管外输过程中基本上漂浮在海面上,报警装置的变化通过肉眼很难观察,增加原油外输的风险。研发一个带无线传输功能报警装置,当第一层管体泄漏后报警装置被激活并传送发射无线信号给中控室,告知用户哪条外输软管第一层管体已经失效需要更换。减少用户的巡检频率,降低了外输作业安全风险。

At present, the offloading hoses on FPSO used in Bohai Bay are basically double car-cass hoses. Compared to the single carcass hoses, the double carcass hoses have the advantage that it can prevent the leakage when the first layer burst, there are leaking detector devices on both ends of the hoses in order to alarm that the first layer is damaged which needs to be replaced. There are two types of leaking detector devices, the one is electronic, the other is mechanical, when the leaking happens, the pressure will acti-vate the alarm devices, the results are alarm flash-ing or alarm turn color. It is hard to observe the leakage for the offloading hoses are floating on the sea, accordingly, increase the chance of the leak-ing. Therefore, it is very important to develop the wireless alarm system which can transmit the sig-nal to the control center and tell which hose should be replaced when the leakage happens, in this way, it can reduce the regular inspection rate, increase the operation safety as well.