RU2578905C1 - Mechanical detachable connection of shells of submarine strong hull - Google Patents

Abstract

FIELD: shipbuilding.

SUBSTANCE: invention relates to designing robust connections for underwater vehicle shells. Joint comprises outer seal connecting mating shells, made without protruding outer parts, using elastic seal with clamp. On external surfaces of connected shells under seal there are made circular recesses with smooth lines with a depth not exceeding tenth part of thickness of connected shells including projections on clamp, shifted towards the surface of split shells by the value of elastic seal compression. Clamp tightly presses seal to external surfaces of connected shells, providing water impermeability of butt detachable connection during the whole time of staying at depth and lowering to depth and lifting.

EFFECT: reliable securing of coupled shells of resistant housing against separation under surface and underwater positions without considerable reduction of strength of joint unit.

1 cl, 1 dwg

Description

The invention relates to marine engineering and relates to the construction of compounds of the shells of the strong hulls of underwater vehicles and containers.

A known node detachable end connection of parts of the waterproof housing of the underwater vehicle, containing rigid connecting elements mounted on the outside of the body and annular thickenings of the body forming a groove for installing the seal (RF Patent No. 224655, IPC B63B 3/13, publ. 20.01.2005, bull. No. 2 )

In the known node detachable end connection of the parts of the waterproof body of the underwater vehicle, the connected parts of the body have annular thickenings made in the form of rings with beveled surfaces, to which the conical ring groove of the clamp tightening the connecting parts of the body fits snugly.

The main advantage of the known assembly of the parts of the waterproof housing is a significant reduction in the connecting elements of the flangeless connection, which simplifies the connection, increasing the reliability of ensuring the waterproof housing of the underwater vehicle.

The main disadvantage of the known node connecting parts of the waterproof case is the need to manufacture the connected parts of the durable case with outer annular thickenings, which complicates the manufacturing process of the shells of the durable case, requires additional consumption of expensive material and increases the mass of the durable case of the underwater vehicle.

It is also known detachable end connection of the shells of the durable body of the underwater vehicle (RF Patent No. 2305046, IPC B63V 3/13, publ. 08/27/2007, bull. No. 24 - prototype).

In the known detachable end connection of the shells of a strong underwater vehicle body, the connected shells are made without protruding external parts, and an elastic seal with a spring clamp is used to connect, which keeps the connected parts of the housing from disconnecting, tightly pressing the seal against their outer surfaces for the entire time of lowering onto depth and lift apparatus.

The main disadvantage of this known detachable end connection of the shells of the durable underwater vehicle body, adopted as a prototype, is the low reliability of the retention of the connected shells of the durable body from separation in the surface position, which is provided only by friction between the shells and the elastic seal.

The problem to which the invention is directed, is to increase the reliability of the retention of the connected shells of the durable casing from separation in the above-water position without significantly reducing the strength of the connection node.

The problem is solved in that the end detachable connection of the shells of the strong body of the underwater vehicle, containing an external seal connecting mating shells made without protruding external parts, using an elastic seal with a clamp that holds the connected parts of the housing from disconnecting, tightly pressing to their outer surfaces the sealant during the entire time of being at a depth, lowering to a depth and lifting the apparatus is made in such a way that on the outer surfaces of the joined shells under the sealant, annular recesses are made with smooth contours to a depth not exceeding a tenth of the thickness of the connected shells, which include the collar protrusions, offset to the shell connector surface by the amount of compression of the elastic sealant.

In the claimed technical solution, the common essential features for him and for his prototype are:

- end detachable connection of the shells of the durable body of the underwater vehicle, contains an outer seal;

- connectable shells made without protruding outer parts;

- an elastic sealant with a clamp was used, which holds the connected parts of the housing from disconnecting, tightly pressing the sealant against their outer surfaces for the entire time that they are at a depth, lowering to a depth and lifting the apparatus.

A comparative analysis of the essential features of the claimed technical solution and prototype shows that the first, unlike the prototype, has the following significant distinguishing features:

- on the outer surfaces of the connected shells under the sealant, annular recesses are made;

- with smooth contours;

- to a depth not exceeding a tenth of the thickness of the joined shells;

- which include the collar tabs;

- offset to the shell connector surface by the amount of compression of the elastic seal.

The essential features of the distinguishing part of the claims solve the problem to which the invention is directed, namely: it increases the reliability of the retention of the connected shells of the durable housing from separation in the surface position without a significant decrease in the strength of the connection node. The annular recesses on the outer surfaces of the joined shells under the seal, which include the protrusions of the clamp, keep the joined shell from being disconnected in the above-water position. Smooth contours of the recesses reduce the stress concentration in the area of the recess cutout. The depth of the recess, not exceeding a tenth of the thickness of the joined shells, leaves sufficient thickness of the joined shell to ensure its strength. The offset of the protrusions on the clamp to the surface of the shell connector by the amount of compression of the elastic seal attracts the connected shells to each other during assembly.

Thus, an increase in the reliability of holding the joined shells of the durable casing from being disconnected in the above-water position without significantly reducing the strength of the joint is achieved by the fact that on the outer surfaces of the connected shells under the sealant are made annular recesses with smooth contours to a depth not exceeding a tenth of the thickness of the connected shells, in which include the protrusions of the clamp, offset to the surface of the connector shells by the amount of compression of the elastic seal.

Based on the foregoing, we can conclude that the essential features of the claimed invention have a causal relationship with the achieved technical result, i.e. thanks to this essential feature of the invention, it became possible to solve the problem, namely: to increase the reliability of the retention of the connected shells of the durable housing from separation in the surface position without a significant decrease in the strength of the connection node. Therefore, the claimed invention is new and has an inventive level, since it clearly does not follow from the prior art and is suitable for practical use.

The invention is illustrated in the drawing, which shows the node of the described connection in the context of hemispherical recesses: in the Assembly - a and its main elements - b. The drawing shows: the connected shell 1 and 2 of a durable case, an elastic seal 3 and a clamp 4.

The sequence of operations of connecting the shells of a durable case: on one of the connected shells 1 or 2 put on an elastic seal 3 so that the end surface is not covered; press the connected shells 1 and 2 to each other along the surface of the connector; pull on the shells 1 and 2 an elastic seal 3 so that the connector line is in the middle of the width of the seal 3; put on the elastic seal 3 the clamp 4 so that the protrusions of the clamp 4 fit into the annular recesses of the connected shells 1 and 2; press the seal 3 to the outer surfaces of the connected shells 1 and 2 with a clamp 4.

During the assembly process, the elastic seal 3 with the help of the clamp 4 enters the annular recesses of the connected shells 1 and 2. The protrusions on the clamp 4, offset to the surface of the shell connector by the amount of compression of the elastic seal Δh, attract the joined shells 1 and 2 to each other. As a result, the elastic seal 3 is tightly pressed against the outer surfaces and recesses of the joined shells 1 and 2, preventing the shells from being disconnected in the above-water position, thereby forming a waterproof joint.

Ensuring the reliability of the retention of the connected shells 1 and 2 of the durable housing from separation in the above-water position is achieved by entering the protrusions in the clamp 4 in the annular recesses on the outer surfaces of the connected shells 1 and 2. The reliability of the waterproof connection of the mating shells 1 and 2 in the underwater position of the apparatus is ensured by a snug fit elastic seal 3 to the outer surfaces of the shells.

When immersed to a shallow depth, the joint is sealed by means of the clamp 4 created during assembly of the initial compression of the elastic seal 3 and its tight fit to the outer surfaces of the connected shells 1 and 2 of the sturdy case. As a result, the possibility of penetration of water into the plane of the connector ends of the joined shells 1 and 2 of the durable housing is prevented. As the depth of immersion increases, the hydrostatic pressure of the water presses the joined shells 1 and 2 of the strong casing against each other with increasing force and presses the elastic seal 3 against the outer surfaces of the connected shells 1 and 2 more and more, constantly maintaining the water resistance of the described shell joint. The protrusions on the clamp 4, included in the annular recesses on the outer surfaces of the connected shells 1 and 2 of the durable case, prevent its movement relative to the surface of the connector of the connected shells 1 and 2.

When lifting the underwater vehicle, the hydrostatic pressure on the elastic seal 3 decreases and the diameters of the connected shells 1 and 2 increase, which reduces the gap between the shells and the clamp 4, and therefore, increases the compressive forces of the elastic seal 3 to the shells 1 and 2 of the durable case. This preserves the watertightness of the end connection of the shells of the durable body when lifting the underwater vehicle to the surface.

Thus, the described end detachable connection of the shells of the strong body of the underwater vehicle prevents the connected shells of the strong body of the underwater vehicle from being disconnected from the surface and ensures the watertightness of the durable body during the entire time the underwater vehicle is at a depth, lowering to depth and lifting.

Claims (1)

The end detachable connection of the shells of the solid body of the underwater vehicle, containing an external seal connecting mating shells made without protruding external parts, using an elastic seal with a clamp that keeps the connected parts of the housing from disconnecting, tightly pressing the seal against their outer surfaces for the entire time they are at a depth, lowering to a depth and lifting the apparatus, characterized in that on the outer surfaces of the connected shells under the sealant s annular recesses with smooth contours to a depth of not more than a tenth of the thickness of the joined skins, which include clamp protrusions, biased to the connector shell surface by elastic compression of the seal.