The invention discloses a novel outboard pipe. The novel outboard pipe comprises an outboard pipe body, an outer plate, a connecting pipe, a broadside valve, an inner plate, a duplex stainless steel pipe, a galvanized steel pipe, a first connecting flange, a second connecting flange, Teflon gaskets, bolts and a hull outer plate. The novel outboard pipe has the advantages that the outboard pipe is divided into the inner pipe and the outer pipe, the outer pipe is the galvanized steel pipe and is welded to the hull outer plate, the inner pipe is further arranged in the outer pipe and is the duplex stainless steel pipe, the connecting flanges for the duplex stainless steel pipe are special reducing flanges, the duplex stainless steel pipe is inserted from the interior of the galvanized steel pipe, the Teflon gaskets are arranged between the duplex stainless steel pipe and the galvanized steel pipe and arranged on the surfaces of the bolts in a sleeving mode to prevent corrosion caused by potential difference generated by contact of the two materials; and the technical problem that an existing conventional outboard pipe is prone to being corroded by waste water of an acid desulfurization system is solved, and the novel outboard pipe in the form can be widely used.
一种新型的舷外管,包括舷外管本体、外板、连接管、舷侧阀、内板、双相不锈钢管、镀锌钢管、第一连接法兰、第二连接法兰、特氟龙垫片、螺栓和船体外板。本发明的优点是:该舷外管分为内管及外管,外管为镀锌钢管与船体外板焊接,在外管内再设置一根内管为双相不锈钢管,该双相不锈钢管连接法兰使用特制异径法兰,将双相不锈钢管从镀锌钢管内部插入,在双相不锈钢管与镀锌钢管之间使用特氟龙垫片及特氟龙套在螺栓表面防止两种材料间接触产生电位差形成腐蚀;解决了现有常规舷外管容易受酸性脱硫系统废水腐蚀的技术问题,该形式可广泛用于使用。
Novel outboard pipe
一种新型的舷外管
2021-09-03
Patent
Electronic Resource
Chinese
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