Thermal sensing blow out preventer actuating device

摘要: The present disclosure is directed to a fail safe device close an oil or gas well that has ignited during drilling workover operations working in conjunction with pressure accumulators and blow out preventers. apparatus installed line the upstream side of which pressurized by downstream connected actuate preventer. pair normally closed check valves are spaced apart but may be moved together unseat permit fluid from movement motor while being under restrained unseating thermally fusible flowable barrier when attaining flow temperature will valve apply accumulator preventer well.