RU2271961C1 - Method of modification of ships and ship to be modified by this method - Google Patents

Abstract

FIELD: shipbuilding; designing, repair and modification of ships.

SUBSTANCE: proposed method is applied for modification of ship having hull with fore section , midship section with cylindrical insert and cargo holds divided by transverse bulkheads and aft section. Hull is cut into two parts which are drawn apart over length sufficient for additional module to be inserted; additional module is inserted at retaining deck level and freeboard of midship section and is connected with cut parts. Ship's hull is cut in area of cylindrical insert of midship section near transverse bulkhead between two adjacent cargo holds; additional module has the same width and shape of midship section insert. Additional module may be equipped with additional cargo hold. Fore section may be provided with thruster and outfitted with room for control of this thruster.

EFFECT: enhanced efficiency due to increased cargo holding capacity; facilitated procedure of ship modification.

6 cl, 2 dwg

Description

The invention relates to ship repair and can be used in the design, repair and modernization of ships.

Currently, a large number of vessels of average age are used in maritime transport. Well-known vessels can still be used, however, their carrying capacity does not meet modern cargo transportation, and building new vessels is expensive.

There is a method of lengthening the hull by inserting a new block into its non-cylindrical part with its preliminary cutting into two sections, in which the cut sections of the non-cylindrical part are pushed to the specified lengthening of the ship's hull, and then, using theoretical transverse sections, find the minimum distance between the extended parts of the hull (see author St. USSR No. 477884 for the invention "Method for lengthening the hull of the vessel", IPC (2) B 63 V 9/00. Priority date 05/03/1973, publication date of the claims July 25, 1975) [1].

The disadvantage of this method is that it does not provide a significant increase in the carrying capacity of the vessel. In addition, the process of inserting a new block into the non-cylindrical part of the housing is technologically quite complicated.

A known method of reconstruction of the vessel, including increasing the useful volume of the hull, consisting in separating from the hull of the fore end located below the cargo waterline, shifting it relative to the main part of the hull and inserting an additional section between them (see ed. St. USSR No. 597590 for an invention “Method for the reconstruction of a ship”, IPC (2) B 63 B 9/00. Priority date from 04/26/1976, publication date of claims 15.03.1978.) [2].

This method of ship reconstruction also provides a minimal increase in ship's carrying capacity. In addition, the technology of reconstruction of the vessel is quite complicated.

The analysis of the information on the existing level in the field selected during the search made it possible to identify the closest to the claimed method for reconstructing a vessel having a hull including a bow section, a middle section with a cylindrical insert with cargo tanks separated by transverse bulkheads, and a stern section, consisting of the fact that the nasal section having a curvature is separated from the middle in a place located with the rear end of the nasal section, an additional block is inserted between the separated nasal section and the media section and use a new outer shell of the double bottom, the said inserted unit retaining the curvature of the nose section and increasing in the directions of its width and depth (height) to form a smooth outer surface of the body, the shape of the outer shell of the double bottom corresponds to the shape of the middle section of the body (see RF patent No. 2139808 for the invention "Reconstruction of tankers", IPC (6) B 63 V 9/04. Priority date from 05.26.1995, date of publication of the claims 20.10.1999. Number and date of international or regional application: CA 95/00312 (05.26.95). Applicant Name - Le Endustri Verro (1991) Inc. (CA) - prototype) [3].

The known technology for the reconstruction of the vessel described above does not allow to maximize the useful volume of the vessel and carrying capacity. In addition, the ship reconstruction technology itself is quite complex and time-consuming.

Thus, the known methods of reconstruction of the vessel in order to increase its carrying capacity do not differ in high efficiency of modernization.

The inventive method for the reconstruction of a vessel allows to achieve a new technical result - increasing the efficiency of reconstruction of a previously constructed vessel by simplifying the reconstruction process and providing a significant increase in the carrying capacity of the vessel.

A ship is known whose hull is elongated by inserting a new block into its non-cylindrical part at its minimum length, the contours of which are smoothly articulated with the contours of the extended hull parts, see [1].

With this reconstruction, a known vessel is characterized by an insufficient increase in its carrying capacity.

A ship is known, the useful volume of the hull of which is increased due to the additional section, which is inserted between the lower cargo waterline and the bow part displaced into the nose and the main part of the hull, see [2].

With this modernization, a known ship is also characterized by a low increase in ship's carrying capacity.

The analysis of information on the current state of the art selected in the search process revealed the closest vessel to the claimed one, having a hull containing a bow section, a middle section with a cylindrical insert with cargo tanks separated by transverse bulkheads, and a stern section, as well as inserted between the bow and the middle sections an additional unit, the shape of the front end of which corresponds to the shape of the nose section and which preserves the curvature of the nose section and increases in the directions of its width us and depth to form a smooth outer surface of the housing, see [3] -. prototype.

A known vessel is also characterized by insufficient increase in the carrying capacity of the vessel.

Thus, well-known existing ships, reconstructed in order to increase their carrying capacity, do not provide a sufficiently necessary increase in the carrying capacity of a previously constructed vessel. In addition, to increase the carrying capacity of known vessels using quite complex reconstruction methods.

The inventive vessel provides an increase in the operational efficiency of a previously constructed vessel by providing a significant increase in its carrying capacity with the maximum simplicity of the method of reconstruction of the vessel.

The following set of essential features characterizes the essence of the proposed group of inventions and contributes to the achievement of new technical results.

A method of reconstructing a vessel having a hull including a bow section having a cylindrical insert, a middle section with cargo holds separated by transverse bulkheads, and a stern section, which consists in cutting the hull of the vessel into two parts, extending it to the length of the additional block to be inserted, inserting the latter with the ability to maintain deck level and freeboard height of the middle section and connect it to the hull by attaching to the cut parts, characterized in that the hull of the vessel is cut insertion in a cylindrical middle section near the transverse bulkheads between two adjacent cargo holds, and the inserted additional unit stores the width and shape of the middle section of the cylindrical insert hull.

The result is achieved by the fact that the additional unit is equipped with an additional cargo hold.

The fact that a bow thruster is installed in the bow section of the hull and a room for servicing the bow thruster is equipped, improves the maneuverability and controllability of an elongated vessel, which also helps to achieve the desired result.

A vessel comprising a hull comprising a bow section having a cylindrical insert, a middle section with cargo holds separated by transverse bulkheads, and a stern section, as well as an additional unit inserted to maintain deck level and freeboard height of the middle section, characterized in that the additional unit inserted into the cylindrical insert of the middle section of the hull near the transverse bulkhead between two adjacent cargo holds, and the inserted additional unit is made equal to a width the width of the cylindrical insert, and a shape similar to the shape of the latter.

The result is achieved by the fact that the additional unit is equipped with an additional cargo hold.

Providing the bow section of the hull with a bow thruster and refitting it with a room for servicing the bow thruster improves the maneuverability and controllability of the elongated ship, which also helps to achieve the desired result.

So, the analysis of the revealed information about the current level of technology in this field and the essence of the proposed group of inventions showed that the latter meet the patentability criterion of "novelty."

The method, which consists in the fact that the hull of the vessel is cut into two parts, extended to the length of the inserted additional unit, provides lengthening of the vessel.

The fact that the hull of the vessel is cut in the region of the cylindrical insert of the middle section near the transverse bulkhead between two adjacent cargo holds and an additional block is inserted into the resulting section, which preserves the width and shape of the cylindrical insert of the middle section, greatly simplifies the process of reconstruction of the vessel. This is due to the fact that in the cylindrical insert of the middle section, the body contours are simple, and the process of docking and connecting an additional unit, having a shape similar to two adjacent cut parts of the insert of the middle section, is technologically simple enough. In addition, with this method of cutting the hull of the vessel, the integrity of the closure structures of adjacent cargo holds is not violated, which also simplifies the process of reconstruction of the vessel.

The equipment of the additional unit inserted into the cylindrical insert of the middle section of the ship’s hull with an additional cargo hold provides a significant increase in the ship’s carrying capacity compared to the prototype due to the fact that the ship’s middle section is not only much wider than the bow, but also the widest.

Thus, with the sufficient simplicity of the reconstruction method, the ship's carrying capacity is significantly increased.

A vessel comprising a hull containing a bow section having a cylindrical insert, a middle section with cargo holds separated by transverse bulkheads, and a stern section, as well as an additional unit inserted with the ability to maintain deck level and freeboard height of the middle section, provides lengthening of the hull and increase its carrying capacity.

The insertion of an additional unit, made in width equal to the width of the cylindrical insert, and in a form similar to the shape of the latter, in the cylindrical insert of the middle section of the hull near the transverse bulkhead between two adjacent cargo holds, and supplying it with an additional cargo hold provides a significant increase in the cargo capacity of the vessel compared to the prototype since the middle cylindrical insert of the body has the largest width. This contributes to a significant increase in the carrying capacity of the vessel with the maximum simplicity of the used reconstruction method.

The supply of the bow section of the ship's hull with a thruster provides an increase in the operational efficiency of the previously constructed and elongated ship according to the proposed reconstruction due to the improvement of its maneuverability and controllability.

The equipment in the bow section of the hull of the thruster servicing room ensures the effective servicing of the thruster, which also increases the efficiency of operation of the upgraded vessel.

Thus, the claimed combination of essential features of the group united by a common inventive concept of inventions provides technical results in all cases to which the requested amount of legal protection applies.

During the search by the applicant for information in the field of ship repair, no distinguishing features of the claimed inventions were discovered among well-known objects of the same purpose. Therefore, the proposed group of inventions has such a patentability criterion as "inventive step".

The proposed group of inventions is illustrated using the drawings, where

figure 1 shows the ship before reconstruction (side view);

figure 2 - ship after reconstruction (side view).

The hull of the vessel is subject to modernization, containing the bow section 1 (see Figs. 1, 2), having a cylindrical insert 2, the middle section 3 with cargo holds 4, separated by transverse bulkheads 5, and the stern section 6. For this, the hull is cut in the area of the cylindrical insert 2 the middle section 3 near the transverse bulkhead 5 between two adjacent holds 4 along the transverse plane 7. The resulting parts of the hull of the vessel are extended by the length of the additional unit 8. With this cut of the vessel, the integrity of the closure structures (not shown in the diagram) of adjacent cargoes 4 holds are not broken.

Additional block 8 (see figure 2) can be either newly made or cut from an old vessel, similar in architectural type to the reconstructed vessel. The additional unit 8 is made of a width equal to the width of the cylindrical insert 2, and a shape similar to the shape of the latter. Block 8 is made with such overall dimensions and contours to maintain deck level and freeboard height of the middle section 3 of the hull. Due to the simple design of the cylindrical insert 2 of the middle section 3 and the additional unit 8, the connection of the latter by attaching it to the cut parts of the insert 2 of the middle section 3 is technologically quite simple and with minimal installation costs. The connection of the additional unit 8 with the cut parts of the insert 2 is carried out in a known manner, for example, by welding.

The additional unit 8 is equipped with an additional cargo hold, which allows you to carry more cargo by the volume of this additional hold.

A bow thruster 9 is installed in the bow section 1 of the hull and a room 10 is equipped for servicing the thruster 9. The thruster 9 improves the maneuverability and controllability of the vessel after lengthening the hull.

In accordance with the proposed method, the overall configuration of the hull is fully preserved, only the latter is lengthened and the vessel's carrying capacity is increased by the amount of the additional hold. This way you can increase the carrying capacity of a vessel with a single or double bottom.

To ensure the necessary strength of the elongated vessel in a known manner, the hull is faulted and the necessary hull work is carried out.

Thus, as a result of applying the group of inventions, the set new technical results are achieved for each invention individually and as a whole for the group. Ease of reconstruction of the vessel and increase its carrying capacity is provided.

Therefore, the proposed group of inventions meets the patentability criterion of "industrial applicability".

The Murmansk Shipping Company has developed a technical project to increase the carrying capacity, which is based on the proposed method of reconstruction of the vessel. Three vessels, Dmitry Pozharsky, Kuzma Minin and Mikhail Kutuzov, for bulk cargo, which have successfully completed their first voyages after reconstruction, are currently being reconstructed. At the same time, the volume of transported goods was significantly increased.

Claims (6)

1. A method of reconstructing a vessel having a hull including a bow section having a cylindrical insert, a middle section with cargo holds separated by transverse bulkheads, and a stern section, which consists in cutting the hull of the vessel into two parts and extending it to the length of the inserted additional unit , insert the latter with the ability to maintain deck level and freeboard height of the middle section and connect it to the hull by attaching to the cut parts, characterized in that the hull of the cut vessel They are placed in the area of the cylindrical insert of the middle section near the transverse bulkhead between two adjacent cargo holds, and the inserted additional unit preserves the width and shape of the cylindrical insert of the middle section of the vessel. 2. The method according to claim 1, characterized in that the additional unit is equipped with an additional cargo hold. 3. The method according to claim 1, characterized in that a bow thruster is installed in the bow section of the body and a room for servicing the bow thruster is equipped. 4. A vessel comprising a hull containing a bow section having a cylindrical insert, a middle section with cargo holds separated by transverse bulkheads, and a stern section, as well as an additional unit inserted to maintain deck level and freeboard height of the middle section, characterized in that the additional unit is inserted into the cylindrical insert of the middle section of the hull near the transverse bulkhead between two adjacent cargo holds, and the inserted additional unit is made equal to second cylindrical insert width, and shape similar to the shape of the latter. 5. The vessel according to claim 4, characterized in that the additional unit is equipped with an additional cargo hold. 6. The ship according to claim 4, characterized in that the bow section of the hull is equipped with a bow thruster and is equipped with a room for servicing the latter.

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