RU207348U1 - PAD FOR CREATING FOAM BETWEEN FLOAT AND LIQUID - Google Patents

Abstract

The utility model relates to shipbuilding, namely to additional equipment for floating facilities, providing increased protection against the effects of an external aggressive environment, which is attached to a part of the ship's hull immersed in water. The technical result of the claimed utility model is to increase the protection of the ship's hull from the effects of an aggressive environment, which is achieved due to the fact that the pad for creating a foamy shell between the floating vehicle and the liquid medium, made in the form of an elastic plate, in the internal volume of which there is a network of interconnected channels and a set of conical cutouts is made, the tops of which are communicated with the outer side by capillaries, and the bases are connected to a system of channels, and the channels are able to communicate with a source of compressed air located on the floating vehicle, while the pad has through mounting holes for attachment to the swimming vehicle, and a groove-and-tenon pattern is made along the perimeter of each lining for connection with adjacent overlays. 1 wp f-ly, 5 dwg

Description

The utility model relates to shipbuilding, namely to additional equipment for floating facilities, providing increased protection against the effects of an external aggressive environment, which is attached to a part of the ship's hull immersed in water [B63H 11/02, B63J 99/00].

A water vehicle is known from the prior art [RU 101001 publ. 01/10/2011], containing a hull and elastic skeg-floats symmetrical with respect to the general longitudinal axis of the vessel, a mechanism for changing the pressure of a gaseous working fluid in the cavities of the skeg-floats, connected by means of gas pipelines to the compressor receiver, characterized in that the skeg-floats are made of several gas-tight pneumatic cylinders, each of which is movably and detachably fixed to the body and connected to the mechanism for changing the pressure of the gaseous working fluid.

The disadvantages of this analogue are

high structural complexity, due to the fact that the skeg-floats are made up of several gas-tight pneumatic cylinders;

a low level of protection of the elements of a watercraft from the effects of an aggressive environment, namely, float skegs, which come into contact with water during the operation of the watercraft.

The closest in technical essence is Kashevarov's vessel [RU2104901, publ. 02/20/1998], containing a surface hull with engines, having fuel tanks, launching devices, combustion chambers and compressors for forming an air cushion between the bottom of the surface hull, sides and upper surfaces of the bow and stern wings, characterized in that each wing is made with placed in it, a water-gas jet propulsion-injection direct-flow channel communicated with the corresponding of the mentioned engines, while the fuel tanks are placed inside the said wings.

In particular, the said device is made with tubes and nozzles located in the lower part of the chamber and communicated with the pumps for supplying water to these tubes.

The main technical problem of the prototype is the low protection of the ship's hull from the effects of an aggressive environment, due to the fact that during the operation of the ship, its hull directly contacts, below the waterline level, with an aggressive environment (for example, sea water), which leads to its premature wear ...

The task of the utility model is to eliminate the shortcomings of the prototype.

The technical result of the claimed utility model is to increase the protection of the ship's hull from the effects of an aggressive environment.

The specified technical result is achieved due to the fact that the pad for creating a foamy shell between the floating means and the liquid medium is made in the form of an elastic plate, in the inner volume of which there is a network of interconnected channels and a set of conical cutouts, the tops of which communicate with the outer side by capillaries, and the bases are connected to a system of channels, and the channels have the ability to communicate with a source of compressed air located on the floating vehicle, while the pad has through mounting holes for attachment to the swimming facility, and a groove-and-tenon pattern is made around the perimeter of each pad for connection with adjacent pads ...

In particular, on the outside along the plate there are stiffeners

Brief description of the drawings.

Figure 1 shows a general view of a plate for creating a foamy membrane between a floating device and a liquid medium.

Figure 2 shows a section A-A of a plate for creating a foamy membrane between the flotation device and the liquid medium.

Fig. 3 shows a section B-B of a plate for creating a foam shell between the flotation device and the liquid medium.

Figure 4 shows an embodiment of a plate for creating a foamy shell between a floating device and a fluid medium with stiffening ribs.

Figure 5 shows an embodiment of a plate for creating a foamy shell between a floating device and a liquid medium with an uneven pattern of channels.

The figures indicate

1 - ship's hull; 2 - pad; 3 - cutouts; 4 - channels; 5 - elements of fastening to the body; 6 - universal mounts; 7 - stiffeners.

Implementation of the utility model

The lining for creating a foamy shell between the swimming means and the liquid medium is made in the form of an elastic waterproof plate, which can be made of rubber, soft plastic and other sealed elastic materials. In the inner layer of the patch 2 there are channels 4 communicating with each other, which form a common network. In this case, the design of the lining 2 provides that between the network of channels 4 and the hull of the vessel 1 there is a deaf waterproof layer of the elastic plate. On the outer side of the lining 2 there are cutouts 3 representing the nozzles. The notches 3 have a conical shape, the bases of the cones are inseparably connected to the channels 4, and the tops of the cones are connected to the outer side by capillaries. The tops of the cutouts 3 have a small diameter sufficient to prevent water from passing outside the ship's side due to their elasticity.

The cover plate 2 has through mounting windows for fastening so that its reverse side is located close to the hull of the vessel 1 without the formation of gaps. In this case, to cover the required area of the ship's hull 1, several overlays 2 can be used, fastened together by universal fasteners 6, which are a groove-and-tenon ornament. The tongue-and-groove ornament is made in such a way that when the hull of the ship is overlapped with the help of several overlays 2, there are no gaps between them, into which water can enter, and the inlet channels 4 of adjacent overlays 2 were located opposite each other, forming a common continuous network of channels for several overlays 2.

Depending on the geometry of the hull of the ship 1, the ribs 7 can be used in the pad 2, repeating the geometry of the hull of the ship 1 and ensuring the absence of gaps and sagging between the hull of the ship 1 and the pad 2. In embodiments, the placement of the cutouts 3 may be uneven and have a special character.

A pad for creating a foamy membrane between the floating device and the liquid medium is used as follows.

Initially, several pads 2 are placed on the hull of the ship 1 in such a way that the channels 4 form a single, continuous network.

Further, with the help of fastening elements to the hull 5 (through mounting holes), universal fasteners 6 (groove-and-tenon ornament) and stiffening ribs 7, the lining 2 is fixed to the hull of the vessel 1 without the formation of gaps. Further, when air is supplied under pressure to one or more free outlets of channels 4, the air spreads through the network of channels. Further, at the locations of the cutouts 3 under the action of pressure and due to the flexible material used, the tops of the tapered cutouts 3 expand and air under pressure is passed through the capillaries. Thus, air under pressure passes through the channel system 4, through the cutouts 3 and at the outlet mixes with water, creating an air-water mixture, which is a foam formation. The resulting air-water mixture reduces the effect of friction of the hull of the vessel 1 located below the waterline on the water, helps the vessel when starting to move from a stop, and has a number of other positive effects.

After the end of the air supply, the tops of the cutouts 3 become narrower, preventing water from entering the internal volume of the channels 4.

The technical result of the utility model, an increase in the protection of the ship's hull from the effects of an aggressive environment is achieved due to the fact that due to the dense covering of the ship's hull with waterproof linings 2, which fit tightly to the ship's hull 1, contact with an aggressive medium (which is sea water) is significantly reduced ... At the same time, due to the fact that the supply of air and its use is carried out using a system of channels 4 through cutouts 3, the tops of which expand under the action of air pressure and pass compressed air through the capillaries and narrow in the absence of air pressure due to their elastic properties, the possibility of ingress water into the internal volume of the channels 4, due to which the probability of deformation of the lining 2 over time under the influence of an aggressive environment decreases, and, as a consequence, the probability of water ingress to the ship's hull is reduced, thereby further increasing the protection of the ship's hull.

Thus, the claimed technical solution makes it possible to extend the service life of the ship's hull 1, to reduce the cost of its maintenance and repair, and to improve the ship's sailing characteristics.

The claimed technical solution is removable, simple in standard implementation and can be implemented without making major structural changes to the vessel.

In 2019, the applicant manufactured a prototype of the claimed device, the trial operation of which confirmed the claimed technical result. The increase in the protection of the ship's hull from the effects of an aggressive environment was about 70-90%.

An example of achieving a technical result

Before the operation of the watercraft, pads 2 are attached to the submerged part of the hull to create a foamy shell between the boat and the liquid medium, made in the form of rubber plates. For effective attachment of the overlays 2 to the body, through mounting holes, groove-and-tenon ornament and stiffening ribs 7 are used, thereby ensuring a tight fit of the overlays 2 to the body. During the operation of the floating device through channels 4, from an external source of compressed air located on the ship, compressed air is supplied through the nozzles (cutouts 3), which, passing through the conical channels to the outer part of the plates, expands the cutouts 3 (having elasticity due to the use of elastic material of the linings 2) and exits through the capillaries of the tops of the cutouts 3. The resulting air-water mixture reduces the effect of friction of the ship's hull 1 located below the waterline on the water, and helps the ship when starting to move from anchorage, while protecting the ship's hull 1 from direct contact with the sea water, and also protects channels 4 from the ingress of an aggressive environment, thereby increasing the protection of the ship's hull below the waterline and extending its service life.

Claims (2)

1. A lining for creating a foamy shell between a floating device and a liquid medium, made in the form of an elastic plate, in the inner volume of which there is a network of interconnected channels and a set of conical cutouts are made, the tops of which communicate with the outer side by capillaries, and the bases are connected to the system of channels , moreover, the channels have the ability to communicate with a source of compressed air located on the floating vehicle, while the pad has through mounting holes for attachment to the swimming vehicle, and a groove-and-tenon pattern is made around the perimeter of each pad for connection with adjacent patches. 2. The lining of claim. 1, characterized in that on the outside along the plate there are stiffening ribs.

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