LT3497B - Method of building hull of ship - Google Patents

Abstract

The method for frame construction includes frame part connection and launching into the water. After coupling the carcass parts, it is launched into seawater. Electric current passes through the carcass so the carcass is covered through electrolysis, the seawater acts as electrolyte and the frame cover is formed from magnesia limestone.

Description

The invention relates to methods of construction of water craft.

Known method of manufacturing a hull, comprising forming the hull cover blocks on the supports and attaching them to the fixed flanges, installing equipment in each hull block, disconnecting the supports from the flanges, waterproofing tests, preparing the adjacent blocks to the hull, and interconnection. Attached to the block cover, together with the stationary shims, are removable support shims, which are removed after the assembly of said unit with adjacent blocks (USSR A.L. No. 1221037) _.

The disadvantage of such production is the complexity and costly nature of the equipment and the equipment used.

Also known is a method of constructing a floating body housing by lowering its blocks into the water, assembling them, joining adjacent joints of blocks above the water, and ballasting the joining of adjacent submarine blocks. First, it lowers into the water and connects the middle hull units between themselves. It then differentiates the body of the unit under construction by ballasting the ends and attaches a new unit to the opposite end of the ballast body (USSR A.1823133).

The disadvantage of this type of construction is its high cost.

The object of the invention is to reduce the cost of housing construction.

The stated objective is achieved by the following modifications in the known method of ship hull construction involving the joining and lowering of its elements:

After joining the ship's reinforcing elements, they are lowered into seawater, then powered through the reinforcement, electrolysed, reinforced with seawater, and formed from magnesia limestone.

The authors are not aware of the solutions with the proposed features, and therefore reads that the hull construction method has significant new features.

The method of constructing a hull comprises joining and lowering the hull elements, lowering the combined vessel's armature into seawater, passing electric current through the armature, electrolytic coating the armature using seawater, and forming the hull coat out of magnesia limestone.

An example

When constructing a small ship (10 m) use:

1.Woven steel mesh of 1 mm wire with 10 mm mesh GOST 3826-47.

2.6 mm thick reinforcement GOST 3826-47.

3. GOST 9680-77 transformer with 40 V output voltage and current of 10 A or more.

4.Current rectifier GOST 18142. 1-85.

5.Salt water saturated with salt-electrolyte.

The hull of the ship is assembled from welded steel bars of 6 mm diameter and attached to them by a soft wire mesh of 1.0 mm thickness with 10 mm meshes. In this way, together with the mechanical connection, conductive electrical connections are made between all the reinforcement elements. Soaked fixtures are immersed in a pool with electro

Saturated seawater, which plays the role of lithium. Pool 1 is also fed by aluminum plates-anodes, which are connected to them via a transformer and current rectifier with a constant voltage of 40 volts and 10 amps. A negative lead from the same current source is connected to the vessel's reinforcement acting as a cathode. Starts the electric current through the transformer and the rectifier and starts the electrolysis reaction according to the formulas:

Ca (OH) ₂ + Mg (OH) ₂ + Mg ²⁺ → 2Mg (OH) ₂ + Ca ²⁺

CO ^2- + Ca ²⁺ CaCO3 CO3 ² '+ Mg ²⁺ MgCO3

During the reaction, a coating consisting of magnesium hydroxide - Mg (OH) ₂ is deposited on the vessel's reinforcement; white magnesium -3MgCO ₃ -Mg (OH) ₂ .3H ₂ O, calcium carbonate - CaCO ₃ and other salts dissolved in seawater. At the end of the reaction, this coating of magnesia limestone covers the reinforcement, fills the meshes of the mesh and forms a monolithic structure. The reaction is terminated when the layer above the mesh is 2 mm thick.

Compared to the prototype, the construction of the shell is reduced by the fact that the electrolysis method is cheaper than the cementing of the reinforced cement by manufacturing and then joining the individual shell units, where additional ballast weight balancing is required. The coating of magnesia limestone on the reinforcement surface grows gradually, has good adhesion to the reinforcement elements and immediately takes over the structural loads. This lowers production by minimizing the size of the structural members of the ship and by selecting smaller cutting areas than conventional technology, as the coating does not deform the reinforcement as it grows. The magnesia limestone coating grows evenly without the formation of internal defects and can therefore be thinner, cheaper.

Claims (1)

The construction of a ship's hull, which includes joining and lowering its elements, is characterized by the fact that, after joining the vessel's reinforcement elements, they are lowered into seawater, electrically discharged, covered by seawater and electrolyte the coating is formed of magnesia limestone.