SU846376A1 - Method of forming gas carriers in dry dock - Google Patents

Description

one

This invention relates to shipbuilding and concerns methods for forming gas carriers in a dry dock.

There is a known method of forming gas and cargo carriers in a dry dock, which includes separate assembly of the body and tanks and the subsequent installation of tanks in the body with water filling. 1J.

The lack of this method implies that it becomes necessary to flood the entire dock and the gas carrier hull, which leads to a lengthening of the slipway period.

The purpose of the invention is to reduce the building construction period and the capital cost of crane equipment.

This goal is achieved by the fact that, according to the method, separate parts of the hull are assembled on the pre-dock site and transferred to the upper stage of the filling chamber, adjoining. to dry dock and having bottom on. the elevation of the predog site, then afloat each assembled part of the hull is moved to the lower stage of the filling chamber, formed by the part of the dry dock chamber separated by a shutter, is placed on the bottom of the lower stage, after

whereupon the tank is installed on the upper stage, afloat it is moved to the lower level of the tank, the chamber is installed and installed in a part of the hull, after which the assembled part of the hull with the tank is moved to the main part of the dry dock chamber for subsequent assembly.

.In FIG. Figure 1 shows the installation of a part of the hull at the top stage and its transfer to the bottom stage of the filling chamber; in fig. 2 - the same, on the bottom of the dock and the tank - on the upper stage; in fig. 3 shows the operation of transferring the tank to the lower stage in FIG. 4 shows the installation of the tank into the hull. and the next part of the body to the upper stage; in fig. 5 illustrates the operation of moving a part of a hull with a tank into the main chamber of a dry dock; in fig. b - the initial position of the beginning of the following operations.

Part of the housing 1 using a floor transport system of a known type is installed on the upper stage 2 of the filling chamber with the bottom surface at the elevation of the landing platform 3, then the closure 4, which separates the upper stage 2 from the pre-outlet platform 3, and the bulk

the chamber is filled with water up to the mark providing the ascent of part of the hull 1, after which the latter is moved afloat to the area of the lower step 5, which is part of the dry dock chamber 6, separated by the shutter 7 from the rest of the dry dock 6. Then part of the hull 1 is lowered the bottom of the dry dock 6 in the area of the lower stage 5 by lowering the water level in the filling chamber, while after drying the upper stage 2, a tank 8 is installed on it. After installing the part of the hull 1 on the bottom of the dry dock 6 and its ballasting, the water level in the bulk kam The elevator is raised to the mark that provides the ascent of the tank 8, then the latter is transferred afloat to the lower stage 5 area while simultaneously winding inside the hull 1. The dal 8 is installed in the hull 1 part by gradually lowering the water level in the filling chamber; after completion of this operation, the shutter 7 is removed and part of the hull 1 with the tank B is transported to the main dry-dock 6 using any known method, for example, on ship-carrying trolleys or afloat. the shells are renewed in the sequence described.

The installation of tanks in the hull is carried out without filling the entire dock and using heavy crane equipment by using the filling chamber.

adjacent to the dry dock. This reduces the construction time and capital costs of crane equipment.

Claims (1)

1. The patent of France No. 2158851, cl. In 63 In 9/00, published. 1973 (prototype).