The invention discloses a sectional assembly method for a double-lug storage tank of an LNG transport ship. The sectional assembly method comprises the following steps that S1, a tank body is divided into two sections, and storage tank sections are manufactured; s2, a temporary saddle and an air bag are installed in the cabin, so that two supporting parts are formed in the cabin; s3, the two storage tank sections are hoisted to the two supporting parts correspondingly for preliminary butt joint; s4, the inflation state of the air bag is controlled so that accurate butt joint of the storage tank sections can be conducted; s5, after precise butt joint is completed, the two storage tank sections are welded, and a tank body is obtained; and S6, the inflation state of the air bag is controlled to disassemble the temporary saddle and connect the tank body with the storage tank permanent support, and then installation of the double-lug storage tank is completed. And the air bag and the temporary saddle are assembled and butted, so that the double-lug storage tank can be accurately assembled in a cabin by folding weld joints and the whole storage tank can be stably positioned without ultra-large hoisting equipment while the construction operation of the ultra-large hoisting equipment is avoided.
本发明公开了一种LNG运输船双耳储罐的分段组装方法,包括以下步骤:S1、将罐体分为两段并进行储罐分段的制作;S2、在船舱内进行临时鞍座及气囊安装,使得在船舱内形成两个支撑部;S3、将两个储罐分段分别吊装至两个支撑部上进行初步对接;S4、控制气囊的充气状态以进行储罐分段的精确对接;S5、完成精确对接后,对两个储罐分段进行焊接,得到罐体;S6、控制气囊充气状态进行临时鞍座的拆卸以及罐体与储罐永久支座的连接,即完成双耳储罐的安装。通过气囊和临时鞍座进行组装对接,能在避免选用超大型起重设备施工作业的同时,实现双耳储罐在船舱内合拢焊缝精准组对和无超大型起重设备下的储罐整体平稳就位。
Segmented assembly method for double-lug storage tank of LNG transport ship
一种LNG运输船双耳储罐的分段组装方法
2025-02-11
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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