SU1826954A3 - Deep sea pontoon - Google Patents

Description

The invention relates to the field of rescue systems under water, in particular, to the structures of inflatable pontoons, fixed on the outside of a sunken ship or other sunken objects.

The aim of the invention is to increase the efficiency in operation by making it possible to form a working fluid by an autonomous gas generator directly in the working chamber of the device. A deep-water pontoon, in comparison with a device of a similar purpose (prototype), is completely autonomous and independent of an external source of the working fluid - a compressor with connecting hoses and, therefore, removes the limitations of the pontoon's performance in depth.

Figure 1 shows a deep-sea pontoon, longitudinal section; figure 2 - the same, from above; in Fig.Z - a diagram of the position of the elements of the device during the operation of the gas generator.

The deep-water pontoon device contains a cylindrical body 1, closed on one side with a bottom. The duplicated squibs 2 are screwed into the bottom of the body 1. Gas generator 3 is made combined with the piston 4 and stiffeners

7. O-rings 5 and 6 are inserted into the gap between the housing 1 and the piston 4. The stroke of the piston 4 is limited by the screws 8. The coolant rods are inserted into the solid fuel stick 9. An igniter 11 is provided to initiate the fuel 9. The piston 4 is equipped with an exhaust valve 12. The housing 1 is made with external stiffening ribs 13. improving heat dissipation. The inner surface of the housing 1 up to the piston 4 is closed with an elastic film 14. A heat-resistant coating 15 is applied to the inner bottom of the housing 1. By the pressure of the working fluid formed by the gas generator 3. the piston 4 rises up, forming a working chamber 16 between the bottom of the housing 1 and the piston 4.

The body 1 with stiffening ribs 13 is made, for example, from silumin by centrifugal casting, and the gas generator 3 with a piston 4 and ribs 7, for example, by sand casting, is also made of silumin.

1826954 AZ

The igniters 2 are triggered when an electrical impulse is applied to them. The sealing rings 5 are split, for example, made of steel, similar to the widely used rings for an internal combustion engine. The sealing ring 6 is made, for example, of rubber and together with the rings 5 acts as a gas obturator. As a material of a solid fuel checker 9, for example, ballistic low-temperature fuel TP-Q -3011 A is proposed (5). The rods of the refrigerant 10 for cooling the combustion products during the operation of the gas generator are made, for example, of polymethyl methacrylate. To bring this material into a gaseous state, significant energy is required, which is directly taken from the combustion products and thereby helps to lower the temperature of the working fluid entering the working chamber 16. The elastic film 14 is made, for example, of polyethylene. The heat-resistant coating 15 is made, for example, by plasma spraying.

The deep-water pontoon works as follows.

After attaching it to the sunken object, an electrical impulse is supplied to the pyro cartridges 2, which initiate the igniter 11. Combustion of the igniter 11 creates conditions for the ignition and stable combustion of solid fuel 9. The piston 4, under the influence of the pressure force of the working fluid formed by the gas generator 3, moves inside the housing 1 , the stroke of which is limited by the screws 8. The heat-resistant coating 15 prevents the bottom of the housing 1 from being washed out, leading to its destruction, from the combustion products of solid fuel 9, formed in the initial period of operation of the gas generator 3, when the volume of the working chamber 16 is practically zero and, thus, the heat dissipation the surface of the device is small. As the volume of the working chamber 16 increases, the heat removal is carried out due to the stiffeners 7, 13, In the process of creating the volume of the working chamber 16, the pressure inside it exceeds the external water pressure by the amount of constant overpressure to which the exhaust valve 12 is set, which releases excess gases along as you ascend. The film 14 prevents damage to the inner surface of the body 1 during transportation of the deep-water pontoon to the place of work, as well as the ingress of sand and other particles suspended in water on this surface during operation of the device.

Claims (4)

Claim 1. Deep-water pontoon containing a cylindrical body, closed on one side by the bottom, and a piston with sealing rings, mounted with the possibility of longitudinal movement in the said body, characterized in that, in order to increase efficiency in operation, it is equipped with a gas generator for solid, fuel with refrigerant and igniter located in the cavity made in the piston, open towards the bottom of the housing. 2. Pontoon according to claim 1, characterized in that it is equipped with a heat exchanger made in the form of stiffening ribs on? the front surface of the case. 3. Pontoon according to claim 1, characterized in that the bottom of the body is made with a heat-resistant coating on the inside. 4. Pontoon according to claim 1, characterized in that the piston is made with an exhaust valve communicating the piston cavity with the environment. Φυι.ί Fig. 2 Fig. 3