Seawater tank flange short pipe installation method

Abstract

The invention discloses a method for installing short flange pipes of seawater tanks, which comprises the following steps: firstly, providing a general section of a ship, including an inner bottom plate, a transverse bulkhead perpendicular to the inner bottom plate, a high-level seawater tank, a low-level seawater tank, and a high-level seawater tank. blue short pipe and low flange short pipe, the high seawater tank is located above the inner bottom plate, and the low seawater tank is located below the inner bottom plate; then, the first opening for the high flange short pipe to communicate with the high seawater tank is opened on the high seawater tank , open a second opening on the inner bottom plate for the short flange tube to pass through and communicate with the low sea tank, adjust the short flange tube and the short flange tube to the preset installation position, and then weld and fix the high flange The short pipe and the low flange short pipe complete the installation. The invention completes the installation of the short flange pipe of the seawater tank in the construction stage of the general section through high-precision positioning of the short flange pipe. The construction difficulty is small and the efficiency is high, which provides a strong guarantee for shortening the dock cycle and saves shipbuilding costs.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for installing a short flange pipe of a seawater tank. Background technique [0002] Both the high-level sea tank and the low-level sea tank of the ship are connected to the sea water main pipe unit through the flange short pipe. The sea water main pipe unit cannot be pre-installed in the segmented construction stage due to the large span, and can only be installed on site in the dock stage. However, the hull construction process and There are errors in the segmental assembly and positioning process, and the seawater main pipe unit cannot be directly aligned with the flange short pipes of the high and low seawater tanks at the same time. [0003] At present, it is usually chosen to pre-assemble the short flange pipe of one of the seawater tanks in the process of segmented construction. If the degree of misalignment is large, add another flange short pipe of the sea...

AI Technical Summary

Problems solved by technology

The problems of this solution are: the positioning accuracy of the pre-installed flange short pipe cannot be guaranteed, it may happen that the seawater main pipe unit is not in the predetermined position after docking with it or there is not enough space for the seawater main pipe unit to be installed; The construction space is narrow, the installation is difficult, it takes a lot of man-hours, and the docking period is long

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