RU2796114C1 - Method for sealing a hole in a ship's hull with an electrified patch - Google Patents

Abstract

FIELD: rescue operations on board of a vessel.

SUBSTANCE: method for sealing a hole in the ship's hull with an electrified patch is proposed, which consists of applying and fixing the patch without using keel ends on the hole with torn edges bent outward by placing the patch on the hole with its simultaneous removal from the ship's side to a distance exceeding the height of the outwardly bent torn edges of the hole, followed by pressing the patch to the hole and fixing it at the installation area, a tube with holes in its wall is used as a stiffening rib for the lower edge of the patch, ensuring that its cavity is filled with water for the tube to acquire negative buoyancy after a certain time, along the ends of the tube electric motors of the paddle wheel drive are installed, which initially ensure the removal of the lower part of the patch from the hole, and then bring the lower part of the patch to the ship’s hull, followed by pressing the magnetic field of the electric motors to the ship’s hull, the corresponding parts of the clamps for fixing the patch on the hole along the contour of the hole, indicated by the flexible LED tube, the patch is tightly fixed on the hole by being pressed against the body with the wing screws of said clamp.

EFFECT: proposed method has high reliability and efficiency when sealing a hole in the ship's hull.

1 cl, 5 dwg

Description

The invention relates to the field of emergency rescue equipment and methods for their use and can be used to improve the efficiency of water control on an emergency ship.

Background to the invention. To prevent water from entering a large hole formed in the ship's hull, patches are used that are applied to the hole outside the hull in the absence of a ship's course and weak sea waves. Installation on the hole and fixation (fixation) on it of such patches requires placing under the hull of the vessel under the keel ends (cables) attached to the lower edge of the patch on one side and to the elements of the hull of the vessel opposite the side of the hole on the other side. The ends (sheets) attached to the upper edge of the patch are attached to the elements of the ship's hull from the side where the hole is located. The process of placing keel ends under the hull of large vessels is a complex and time-consuming operation.

If the torn edges of the hole, bent outwards, have a height that prevents the patch from being placed on the hole by moving it along the bead surface, then additional forces and means will be required to apply it to the hole to ensure that the patch is removed from the bead surface to a distance greater than the height of the torn edges bent outward holes. If the vessel starts moving, it will be necessary to fix the installed patch with additional means to prevent the patch from moving relative to the original installation site.

The currently available patches and methods for their installation on a large hole in the ship's hull with torn outward-curved edges and a height that prevents the patch from being placed on the hole by moving it along the side surface are laborious, requiring considerable time and involving a relatively large number of well trained staff.

These circumstances, confirmed by the experience of dealing with water on ships, require the development of an easy-to-implement technical solution that ensures the sealing of these holes.

Known "Means for sealing holes outside" [1]:

chain mail patch (Baranova), the basis of which is a quadrangular mesh (chain mail), consisting of separate interlaced rings of steel cable. The entire mesh is edged with steel lyktros. Two layers of canvas are laid on each side of the net;

larded plaster, which also has a quadrangular shape and comes out of two layers of canvas. The panels are sewn along and across with a triple seam. An ordinary stuffed mat is sewn to one of the sides of the patch with the pile outward. The entire plaster is bound on the outside with a vegetable cable lyktros.

The use of means for sealing holes from the outside [1] by applying and fixing a patch without the use of underbody ends on a hole with torn edges bent outward by placing a patch on the hole with its simultaneous removal from the ship’s side to a distance exceeding the height of the torn edges of the hole bent outward, followed by pressing patch to the hole and its fixation at the installation site does not allow to achieve the technical result of the invention.

Known "Device for sealing holes with torn edges" [2], containing a hard patch with a protrusion around the perimeter, which is fixed to the sealing element, sealing seal, internal support and pull-up element with tightening nut. The device is equipped with bushings, one of which is placed on the outer side of the hard patch on the tightening element with the possibility of free movement along it, and the other is rigidly fixed coaxially with the first bushing on the inner side of the hard patch, while the internal support is made in the form of two levers fixed on a common axes.

The use of a device for patching holes with torn edges [2] by applying and fixing a patch without the use of underlay ends on a hole with torn edges bent outward by placing a patch on the hole with its simultaneous removal from the ship’s side to a distance exceeding the height of the torn edges of the hole bent outward, with subsequent pressing of the patch to the hole and its fixation at the installation site does not allow to achieve the technical result of the invention.

The closest to the proposed invention in its technical essence is the invention "Device for sealing a hole in the hull" [3], containing a patch with vacuum suction cups in the form of cells and a box-shaped element with an elastic seal, characterized in that in order to increase the reliability of fixation on the hole without the use of tail ends, the patch is equipped with sheets and magnetic holders installed around the perimeter, and the vacuum suction cells are made with internal sealed elastic shells that can communicate with a compressed gas source through a single pipeline.

The use of a device for sealing a hole in the ship's hull [3] by applying and fixing a patch without using keel ends on a hole with torn edges bent outward by placing a patch on the hole with its simultaneous removal from the ship's side to a distance exceeding the height of the torn edges of the hole bent outward, does not allows to achieve the technical result of the invention. In addition, in [3] for pressing the patch to the hole and fixing it at the installation site, magnetic holders are used, installed around the perimeter of the patch, making it heavier, and fixing the patch on the hole by means of vacuum suction cups connected to the source of compressed gas through a single pipeline, noticeably complicates the design of the patch.

The technical result of the invention is the application and fixation of the patch without the use of the underbody ends on the hole with torn edges bent outward by placing the patch on the hole with its simultaneous removal from the side of the vessel to a distance exceeding the height of the torn edges of the hole bent outward, followed by pressing the patch to the hole and fixing it in place.

The figure 1 shows the device of the proposed patch that implements the inventive method, with the following designations.

1 - sheets attached to the upper corners of the patch, designed to put the patch on the hole and hold it;

2 - power cable for electrical elements of the patch;

3 - profile rail (stiffening rib) made of aluminum alloy, designed to give the patch longitudinal rigidity, as well as to fix the patch on the hole;

4 - synthetic canvas patch;

5 - flexible LED tube attached to the patch sheet, designed to illuminate the contour of the hole, as well as to enhance the strength of the sheet;

6 - "soft" (without stiffening ribs) side sections of the canvas, preventing the penetration of water into the hole from its side sections;

7 - cuts on the side sections of the patch web, ensuring the acquisition of the desired shape by the web;

8 - electric motor, paddle wheel drive;

9 - paddle wheel with soft plastic blades;

10 - an aluminum alloy tube, which is a stiffener of the lower edge of the patch web with paddle wheel drive electric motors installed on it;

11 - holes in the wall of the tube, ensuring the filling of its cavity with water, for the tube to acquire negative buoyancy after a certain time.

The figure 2 shows a cross section of a profile rail (stiffening ribs), as well as the ship's hull at the site of the hole and a cross section of a clamp with the following designations.

12 - patch cloth glued to the stiffener;

13 - cross section of the stiffener;

14 - torn edges of the hole, bent outward;

15 - ship's hull in the place of the hole;

16 - groove for installing the "heel" of the clamp for fixing the patch on the hole;

17 - "heel" of the clamp;

18 - thumb screw.

The figure 3 shows the appearance of the clamp fixing the patch on the hole.

The figure 4 shows a diagram of the installation of the patch on the hole with the following symbols. 1 - plaster sheets;

19 - patch;

20 - water level;

9 - paddle wheel;

21 - force vector of the longitudinal movement of the lower part of the patch;

22 - gravity vector of the part of the patch immersed in water;

23 - force vector of moving the lower part of the patch to the side (bottom) of the vessel;

24 - the vector of the force of attraction of the electric motors of the paddle wheel drive to the ship's hull under the influence of the magnetic field of the engines;

25 - the area of the hole with torn edges, bent outward.

a, 6, c, d - designation of the positions of the patch when it is installed on the hole:

a - the position of the patch during its immersion in water and removal from the hole;

b - the position of the patch completely immersed in water, approaching the hole;

c - the vertical position of the patch in front of the hole with the paddle wheels rotating in the opposite direction;

d - the position of the “covered” patch applied to the hole with the lower edge pressed to the body by means of the magnetic field of the electric motor.

The figure 5 shows the patch on the inside of the vessel, installed on the hole, with the following designations.

26 - hole contour;

5 - flexible LED tube;

3 - profile rail (stiffener);

27 - clamp for fixing the patch on the hole.

The method is carried out as follows

When the patch is lowered into the water, at the moment its lower edge (tube) enters the water, the electric drives of the paddle wheels are started, contributing to its removal from the ship's hull. At the same time, water enters the tube cavity through the holes, displacing air from it, and thereby increasing the negative buoyancy of the lower part of the patch. The patch immersed in water, by means of the required length, takes a vertical position against the hole, after which the direction of rotation of the electric motors changes, the voltage applied to them increases. The lower edge of the patch under the action of paddle wheels with increased power on their shafts moves to the hull of the vessel, covering the hole with the patch. At a distance of the electric motors from the ship's hull, sufficient for them to be attracted to the hull by the action of the magnetic field of the electric motors, they are pressed tightly against the ship's hull. The blades of the paddle wheels are crushed, not allowing them to rotate. The operating current of electric motors with locked shafts increases, which contributes to an increase in their magnetic flux, as a result of which the pressing force of the electric motors to the ship's hull increases.

After draining the flooded room with a patch placed on its hole, the patch is pressed against the hole by the hydrostatic pressure of sea water. Under the influence of this pressure, the “soft” (without stiffening ribs) side sections of the patch web, due to the cuts in them, acquire the required shape, which prevents the penetration of water into the hole from the sides.

The "heels" of the clamps for fixing the patch on the hole are inserted into the longitudinal grooves of the stiffening ribs along its contour, indicated by the LED flexible tube. With wing screws, the patch is tightly fixed on the hole. The power supply to the patch is switched off.

Information sources

1. flot.com 5. Tools for sealing holes from the outside.

2. https://patenton.ru>patent A device for sealing holes with torn edges. Patent for invention SU 1688007 A1.

3. patents.su Device for sealing a hole in a ship's hull - SU 1615046 A1.

Claims (1)

A method for sealing a hole in the ship's hull with an electrified patch, which consists in the fact that a patch with stiffeners is applied and fixed on a large hole outside the ship's hull without using keel ends, characterized in that for applying and fixing the patch without using keel ends on a hole with torn edges bent outward by inserting a patch onto the hole with its simultaneous removal from the side of the vessel to a distance exceeding the height of the torn edges of the hole bent outward, followed by pressing the patch against the hole and fixing it at the installation site, a tube with holes in its wall, which ensure that its cavity is filled with water to acquire a tube of negative buoyancy after a certain time, paddle wheel drive electric motors are installed at the ends of the tube, which initially ensure the removal of the lower part of the patch from the hole, and then bring the lower part of the patch to the ship's hull with subsequent pressing to the hull of the ship by the force of the magnetic field of the electric motors, the corresponding parts of the clamps for fixing the patch on the hole are inserted into the longitudinal grooves of the stiffening ribs of the patch along the contour of the hole, indicated by the LED flexible tube, by resting on the hull with the thumbscrews of the specified clamp, the patch is tightly fixed on the hole.

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