RU177432U1 - DEVICE FOR DRAWING THE RESCUE OF AN INFLATABLE RAFT FROM THE BOARD - Google Patents

Abstract

The utility model relates to rescue equipment and can be used to rescue people from a ship in a water accident. The device for returning a discharged liferaft inflatable raft from the side of the vessel contains a sealed cylindrical container with a detachable lid. In the container, the raft is folded, the mechanism for pushing the raft out of the container and the means for free longitudinal movement of the raft in the container are located. In the front of the container there is a launch chamber with an easily removable plug, made in the form of a glass buried in the container, in which an autonomous current source is installed, made in the form of a thermal chemical energy source with zero self-discharge, with an activator and a trigger mechanism. A piston is mounted with the possibility of longitudinal movement between the powder gas generator and the raft. The means of free longitudinal movement of the liferaft inflatable raft in the container is made in the form of obturating rings installed between the outer surface of the inflatable raft and the inner surface of the container.

Description

The utility model relates to the rescue equipment of floating equipment, and more particularly to devices for securing and releasing inflatable liferafts, and can be used to save the lives of people from a ship in a water accident.

From the prior art, a jet device for delivering an inflatable liferaft is known, characterized in that the device is made in the form of a rocket having a stabilizer, a rocket part with a parachute, a head part and a mechanism for separating the head part of the rocket with a moderator, a remote mechanism for opening the parachute head at the calculated point, a parachute for braking the head before splashdown, liferaft inflatable raft, gas generator for filling the raft with compressed gas and a sensor one that sends a signal to turn on the gas generator, see patent for invention RU, cl. А63С 9/18, No. 2414378, published 03/20/2011. The invention allows a rescue ship to quickly provide assistance to people caught in the water as a result of a shipwreck or fighting at a certain distance if it is impossible to use aircraft for this purpose. A disadvantage of the known device is the impossibility of using it as a rescue tool directly on a ship in distress, since it is assumed that the rescue inflatable raft is delivered by a jet device to a considerable distance from the rescue vessel.

A device for storing and dropping a liferaft, containing a sealed cylindrical container, a container cover with a mechanism for separating it in the form of pins and pistons with charges and electric igniters, an inflatable mechanism for pushing a raft out of a container, made with a powder low-temperature gas generator, a liferaft gas filling system and a control system , including an autonomous current source, see patent for invention RU, cl. B63C 9/22, No. 2236982, published September 27, 2004. The specified known device is adopted as a prototype, as the closest in technical essence and the achieved result analogue. The device for storing and dropping a liferaft according to the prototype is characterized by improved performance due to the creation of full autonomy of the actuators for opening the lid, pushing the raft and automatically deploying it.

The disadvantage of the prototype is the design of the mechanism for separating the lid of the container, characterized by the presence of a significant amount of electric igniters and powder and detonating charges, which themselves are pyrotechnic means of increased danger. In addition, according to the prototype, the mechanism for separating the lid when it is triggered, implements an explosive release together with the lid of fragments of pins and pyrotechnic pushers, which, as “striking elements of the explosive device”, fly in different directions, representing a serious danger. These disadvantages of the prototype significantly worsen the safety conditions when dropping a liferaft, which ultimately limits the scope of the product.

The utility model is aimed at achieving a technical result, which is expressed in simplifying the design, increasing reliability and safety. Despite the functional diversity of the technical result, it is nonetheless triune, since the simplicity of the design is the key to reliability, and the latter guarantees safety. Ultimately, this technical result allows the discharge of the liferaft inflatable raft from the side of the vessel to one person in almost one movement, even if this person does not have the appropriate training, thereby significantly expanding the scope of the raft recoil device. In the utility model, all the positive properties of the prototype are maximally preserved, the most important of which are autonomy and the automatic nature of functioning.

The specified technical result is achieved in that the device for returning the discharged liferaft inflatable raft from the side of the vessel, comprising a sealed cylindrical container with a detachable lid on one side and a mechanism for pushing the raft out of the container on the other hand, made in the form of a powder gas generator with an electric igniter and an autonomous current source, Means for the free longitudinal movement of the rescue inflatable raft in the container differ from the prototype in that it is equipped with a launch chamber, p located in front of the container and made in the form of a glass buried in the container with an easily removable plug placed on the surface of the container. An autonomous current source is located in the starting chamber and is made in the form of a thermal chemical energy source with zero self-discharge, with an activator and a trigger mechanism. The electric igniter of the powder gas generator is connected to the electrical contacts of a thermal chemical energy source. The means of free longitudinal movement of the liferaft inflatable raft in the container is made in the form of obturating rings installed between the outer surface of the inflatable raft and the inner surface of the container.

Optimal from the point of view of achieving the specified technical result is the execution of each obturating ring split, consisting of two half rings, equipped with expanding springs with the application of antifriction coatings on the outer surfaces of the half rings. Additionally, the mechanism for pushing the raft out of the container can be equipped with a piston mounted in the plane of the container cross section between the powder gas generator and the raft with the possibility of longitudinal movement, while the central part of the piston is curved towards the raft. It is preferable that the container be made of fiberglass, the activator in the form of a pyrotechnic capsule capsule, and the trigger mechanism is in the form of a spring-loaded striker mounted opposite the capsule and fixed with an exhaust check with a ring. In all versions of the device, it is advisable that the detachable lid was installed in the container by means of cut pins.

Inflatable rafts of discharged type are intended for use as collective rescue equipment by passengers and crews of ships and floating structures. The main advantage of inflatable liferafts is their compactness during field storage and the absence of complex and bulky devices for launching. Devices for returning the discharged liferaft inflatable raft from the side of the vessel are devices of constant readiness, the life of people depends on the work of which, due to this, increased requirements for the reliability and reliability of operation. The utility model is based on the principle of “mortar launch”, which ensures autonomy and automatism of the device’s response with maximum simplicity. The device is driven literally in one jerk of the ring, in a matter of seconds the raft is on the water in an inflated state.

The use in the design of the device of the launch chamber buried in the container ensures the localization of the high pressure zone, sealing and protection against accidental operation of an autonomous current source. A thermal chemical energy source with zero self-discharge with a capsule activator is capable of retaining its properties for years, and, together with a spring trigger, is extremely reliable.

Equipping the mechanism for pushing the raft out of the container with a concave piston installed between the powder gas generator and the raft allows to prevent damage to the raft during discharge and ensures its directional movement. Split obturator rings also contribute to the unhindered release of the raft from the container. The antifriction coating on the surface of the piston and the obturating rings allows to reduce the energy loss due to friction when the raft moves inside the container, prevents delay and skew.

The structural scheme of the device for the return of the discharged liferaft inflatable raft from the side of the vessel according to the utility model maximizes its autonomy and reliability under conditions of many years of use. The device is recommended for use on low-sided vessels, its reliability is confirmed by calculations. Thus, all the features of the device for returning the discharged liferaft inflatable raft from the side of the vessel are aimed at receiving and are sufficient to achieve a technical result, namely, simplifying the design, increasing reliability and safety. The recoil device, characterized by the described set of essential features, is new and industrially applicable.

The technical solution is illustrated by drawings.

In FIG. 1 shows a general view of a device for recoil of a discharged liferaft inflatable raft from a ship; FIG. 2 - autonomous current source in the starting chamber.

The device for returning the discharged liferaft inflatable raft from the side of the vessel contains a sealed cylindrical container 1, preferably made of fiberglass, by the winding method according to the "semi-window" scheme. From the front end side in the container 1 is installed with the possibility of separation from the last cover 2. In the middle part of the container 1 is placed in the folded state an inflatable liferaft 3 made of elastic rubberized fabric. On the opposite side of the lid 2 in the container 1 there is a mechanism for pushing the raft 3 from the container 1, consisting of a powder gas generator 4 with an electric igniter 5 and an autonomous current source 6. In the front of the container 1 there is a launch chamber 7 made in the form of a glass buried in the container 1 . In the starting chamber 7, an autonomous current source 6 is installed, consisting of a thermal chemical energy source 8 with zero self-discharge with an activator and a trigger mechanism. The electrical contacts of the thermal chemical energy source 8 are connected to the electric igniter 5 of the powder gas generator 4 by means of conductors passed through the wall of the starting chamber 7. The activator of the thermal chemical energy source 8 is made in the form of a pyrotechnic capsule 9 of a prick type. The trigger mechanism of the autonomous current source 6 is a spring-loaded striker 10, mounted opposite the capsule 9 and fixed by an exhaust check 11 with a ring 12. The trigger striker 10 is driven by a spring 13. The trigger chamber 7 is closed outside by an easily removable plug 14, which is thus placed on the surface container 1.

An inflatable liferaft 3 is located in the container 1 in a folded form, made of elastic material, equipped with a supply of necessary signaling and life support equipment (not shown in the figures). The raft 3 is equipped with its gas filling system, consisting of a compressed gas cylinder with a start valve, driven by a start line (not shown in the figures). The free end of the launch line is equipped with a weak link and is fixed on the container 1 or on the deck. The raft 3 is located in the container 1 with a gap relative to the walls and is equipped with a means of ensuring free longitudinal movement, made in the form of two obturating rings 15, installed between the outer surface of the raft 3 and the inner surface of the container 1. Each obturating ring 15 is made split, consists of two half rings interconnected by dovetail lock. At the junction of the semicircles, expanding springs 16 are installed, and an antifriction coating 17 is applied to the outer surfaces of the semirings in the form of Teflon grease or fluoroplastic tape.

The mechanism for pushing the raft 3 from the container 1 is supplemented by a piston 18, which is located in the container 1 with the possibility of longitudinal movement. The piston 18 is a gas-tight fiberglass membrane mounted in the cross-sectional plane of the container 1 between the powder gas generator 4 and the raft 3. The central part of the piston 18 is curved towards the raft 3, and an antifriction coating is applied to the outer surface of the piston 18, which interacts with the inner surface of the container 1 17 in the form of Teflon grease or PTFE tape.

The detachable lid 2 has a convex shape and is installed in the container 1 by means of pins 19 uniformly and radially distributed around the perimeter of the lid 2. On board the vessel, the container 1 of the device for recoil of the resettable liferaft inflatable raft 3 is rigidly fixed by means of lodges 20, oriented so that the ejection of the raft 3 of the container 1 comes into the water.

A device for returning the discharged liferaft inflatable raft from the side of the vessel operates as follows.

The inflatable raft 3 is rolled up stored inside the container 1, which is mounted on the cradles 20 firmly fixed on the deck of the vessel, while the container 1 with its detachable lid 2 is facing the water. In the event of an emergency, it is necessary to open the easily removable plug 14 of the launch chamber 7, located on the surface of the container 1 from the side of its front end, and to pull the exhaust pin 11 out of the ring 12. Further actions occur automatically. An easily removable plug 14 may contain a brief instruction, for example, “In case of an accident, remove and pull out the check”. As soon as the exhaust check 11 is removed, the spring-loaded striker 10 of the trigger mechanism is released and, under the action of the spring 13, hits the capsule 9. When the capsule 9 is triggered, the weighed portion of the initiating substance of the thermal chemical energy source 8 ignites, and the solid-salt electrochemical composition inside the source 8 melts in a short time and occurs generating a current of a given value. The resulting electric pulse from an autonomous current source 6 through electric contacts activates an electric igniter 5 of the powder gas generator 4. Under the influence of the pressure of the powder gases of the gas generator 4, the piston 18, moving inside the container 1, pushes the inflatable raft 3. The time of the ejection of the raft 3 from the moment of pulling out the exhaust check 11 until the raft 3 leaves the container 1 is no more than 3-5 seconds. When the piston 18 moves, which begins when the overpressure reaches 0.5-2 kg / cm ² , the force is transmitted to the detachable cover 2, the pins 19 are cut, the cover 2 is released, separated from the container 1 and it opens. Parts of the sheared pins 19 remain in the holes and do not fly apart when sheared, the lid 2 itself is thrown into the water. After opening the container 1, an inflatable raft 3 is ejected from it. The speed of the raft 3 at the outlet of the container 1 is about 12 m / s, and is sufficient to guarantee its fall overboard into the water. During the flight of the raft 3, split obturator rings 15 are separated from it and fall into the water, breaking up into half rings, at the same time, the launch line is tensioned, the length of which is at least 15 m. the surface position is completely inflated with a non-toxic gas for no more than 1 min at an ambient temperature of + 20 ° C. In the inflated state, the raft 3 is attached to the hull of the vessel using a launch line, which, after the gas-filling system is activated, acts as a falin.

The advantage of the device for recoil of a resettable liferaft inflatable raft according to the utility model is its simplicity, reliability, safety and efficiency. The operation of such a device is not economically and technically fraught with significant costs.

The above-described examples of the implementation of the device for the return of a resettable liferaft inflatable raft are not exhaustive and are given only for the purpose of explaining the utility model and confirming its industrial applicability. Specialists in this field can improve it and / or implement alternative options within the essence of this utility model, as reflected in the description and drawings.

Claims (6)

1. A device for returning the discharged life-saving inflatable raft from the side of the vessel, including a sealed cylindrical container with a detachable lid on one side and a mechanism for pushing the raft out of the container on the other hand, made in the form of a powder gas generator with an electric igniter and an autonomous current source, a means of free longitudinal movement of the rescue an inflatable raft in a container, characterized in that it is equipped with a launch chamber located in front of the container and made in the form a glass buried in a container with an easily removable plug placed on the surface of the container, while an autonomous current source is located in the starting chamber and is made in the form of a thermal chemical energy source with zero self-discharge, with an activator and trigger mechanism, the electric igniter of the powder gas generator is connected to the electrical contacts of the thermal chemical source energy, the means of free longitudinal movement of the rescue inflatable raft in the container is made in the form installed between n the outer surface of the inflatable raft and the inner surface of the container obturating rings. 2. The device according to claim 1, characterized in that the mechanism for ejecting the raft from the container is equipped with a piston mounted in the plane of the container cross-section between the powder gas generator and the raft with the possibility of longitudinal movement, while the central part of the piston is curved towards the raft. 3. The device according to claim 2, characterized in that each obturating ring is split, consisting of two half rings equipped with expanding springs, and an antifriction coating is applied to the outer surfaces of the half rings. 4. The device according to claim 3, characterized in that the activator is made in the form of a pyrotechnic capsule on the top, and the trigger mechanism is a spring-loaded striker installed opposite the capsule and fixed with an exhaust check with a ring. 5. The device according to claim 4, characterized in that the container is made of fiberglass. 6. The device according to claims 1-5, characterized in that the detachable lid is installed in the container by means of cut pins.

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