Shenglong Ship successfully developed pressure watertight door for the first time

Recently, Lishui Shenglong Ship Fittings Co., Ltd. successfully developed large-scale fast opening and closing pressure-resistant watertight doors for the first time. A total of 40 large-size quick-opening and pressure-resistant watertight doors of these two sizes will be installed on the outer wheel "Nada" livestock transport vessel under the repair of China Shipbuilding Chengxi Shipbuilding Co., Ltd.
It is reported that the watertight door is composed of door panels, door frames, main connecting rods, locks, door hooks, packings, central opening devices, etc. The maximum size is 1.5 meters long and 1.9 meters wide, and the weight of single fans is 1.5 tons. Since the watertight door is used in a deep tank of 18 meters below the freeboard, it has extremely high requirements on pressure resistance, deformation and sealing. Therefore, the door frame and door panel are made of CCSA grade steel, and the distortion is deviated. No more than 2 mm, the door frame and door panel are not more than 1 mm straight, and all parts must be interchangeable. Moreover, the product must be subjected to a withstand voltage test before leaving the factory. The test pressure is 2.7 MPa and the dwell time is 15 minutes. The rapid development of large-scale quick-opening and pressure-resistant watertight doors has accumulated rich experience for the company to build high value-added special armored parts in the future.

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