RU174744U1 - Gas filling device for inflatable rescue equipment - Google Patents

Abstract

The utility model is intended for filling inflatable liferafts of various capacities, lifejackets, etc. The gas filling device for inflatable rescue equipment includes a cylinder for storing charge components, a starting device and a line for supplying components to the chambers of an inflatable rescue device. The starting device includes a housing located in the guide tube, a starting cable with a ball at one end, a membrane, a spring, and a rod with a sharp tip and channels for passage of charge components that can be moved by means of a spring and depressurizing the membrane. The starter device further comprises a safety device. The utility model allows to increase the reliability of the device in a wide temperature range of ambient air and sea water. 8 s.p. crystals, 1 tab., 6 ill.

Description

The gas filling device is designed to fill inflatable liferafts of various capacities, lifejackets, etc.

Known rescue device (RU 2026234, publ. 09/01/1995) contains a housing, the cavity of which is communicated by means of a pipe with a rescue reservoir, and a gas supply system to the rescue reservoir with a sensitive differential hydraulic element controlling it. A chamber for compressed gas with a fitting for filling it is placed in the cavity of the housing. The pipe is made with a locking body in the form of a spring-loaded valve with an eccentric clamp connected by means of a pusher with a sensitive element made in the form of a membrane.

The known device for gas filling an aircraft liferaft (RU 1297375) contains a gas cylinder, a locking head with a shutter, a starting cable with a polyethylene coating, a ball and an eye. The cable is enclosed in a sleeve sleeve having a sheath of woven material, a frame of wire spiral and nipples with an internal screw thread. Between the turns of the frame there is a gap. In the place of attachment of the nipple to the head, an elastic membrane is installed with an opening through which a cable is passed. The eyelet is connected to a launch-halyard halyard, which is attached to the raft (not shown) through one uncoupling device with a check, and has a carbine on the other end for attachment to the aircraft.

The technical problem solved by this utility model is to increase the reliability of the proposed device through its speed in a wide temperature range of ambient air and sea water.

The solution to this problem is achieved by the fact that the gas filling device for inflatable rescue equipment contains a cylinder for storing charge components, a starting device and a line for supplying components to the chambers of an inflatable rescue vehicle. The starter includes a housing located in the guide tube of the starter cable with a ball at one end, a membrane and a spring, while the starter contains a rod with a sharp tip and channels for passage of charge components that is movable by means of a spring and depressurizing the membrane. The components of the charge are carbon dioxide, nitrogen gas, and ethyl alcohol. The starter device further comprises a safety device consisting of a safety sleeve, a membrane and a copper gasket, and a sealing plug. At the same time, the line for supplying components to the chambers of an inflatable life-saving device consists of three hoses, two non-return valves and a tee, non-return valves are sealed. The starter cable is enclosed in a flexible pipe, and the starter device also contains an element for determining the service life of the gas filling device.

The proposed utility model is presented in the drawings, where in FIG. 1 schematically shows an inflatable liferaft with the proposed gas filling device and a line for supplying components to the chambers of an inflatable liferaft, in FIG. 2 shows a cylinder for storing charge components with a starting device, front view, in FIG. 3 shows a starter, front view, in FIG. 4 shows a starting device, a section, in FIG. 5 shows a component supply line, front view, in FIG. 6 is a section AA in FIG. 5.

The gas filling device 2 consists of a cylinder 3 for storing charge components with a starting device and a component supply line 1 (Fig. 1, Fig. 2). The design includes a cylinder 3 made of alloy steel or metal composite material. Cylinder 3 with shutoff valves is designed to store charge components. In the neck of the cylinder 3 is installed the body of the siphon 4 with a flexible pipe 5 and a tip at the end (Fig. 3, Fig. 4). In the case of the siphon 4, a sleeve 6 with a membrane and a copper gasket is installed. When mounting the sleeve, the membrane and gasket are kept by the spring ring from falling out. The case of the siphon 4 has a safety device consisting of a safety sleeve 7, a membrane and a copper gasket.

The membrane of the safety device is destroyed at a certain pressure and ensures the exit of the gas mixture from the cylinder 3 into the atmosphere through the holes of the safety sleeve 7. When mounting the starter device on the siphon body 4, a divider 8 is installed, which serves to dissect the charge stream. During operation, the connection of the cylinder 3 and the body of the siphon 4 is not subject to the connector.

The starting device (Fig. 4) is designed to depressurize the membrane of the sleeve 6 in the cylinder 3 in order to supply charge components through the line for supplying components 1 to the camera of the rescue tool.

The starting device consists of a housing 9, a rod 10, a spring 11, a sealing ring 12, a guide tube 13, a starting cable 14 with a ball 15, a sealing plug 16 and a washer. A fitting 17 is installed in the housing 9 for connecting the component supply line 1. The component supply line 1 is connected to the fitting 17 through a copper gasket. When connecting the line 1 to the fitting 17, the plug 18 is first removed. The tip of the rod 10 is pointed and has channels for the passage of charge components. In the middle part of the rod 10, there is an annular groove into which the sealing ring 12 is installed. The spring 10 flange of the rod 10 is pressed against the ball 15 of the starter cable 14. When a pulling force is applied to the starter cable 14, the ball 15 is displaced into the tube guide 13, and the spring 11 moves the rod 10, which pierces the membrane with a sharp end (Fig. 4), providing a charge exit from the cylinder 3 into the raft through the component supply line 1.

The line for supplying components of a gas filling device (hereinafter - MPC) (Fig. 5) with non-return valves is designed to supply charge components to the chambers of the rescue vehicle.

IPC 1 gas filling device 2 (Fig. 5) consists of three hoses 19 and 20, two non-return valves 21, tee 22, copper gaskets. Hose 20 is different from hoses 19 in length.

The basis of the hoses are sleeves, at the ends of which nipples 23 with union nuts 24 are installed. The sleeves from both ends from the outside are firmly crimped by couplings 25 for secure connection with nipples. Hoses 19 and 20 (Fig. 5, Fig. 6) are connected through gaskets (not marked) through the union nuts 24 to the fittings 26, which in turn are screwed into the housing 27.

When a charge is supplied from the cylinder 3 of the gas filling device 2, the valve 28 compresses the spring 29 and, moving downward, opens the charge access to the raft chambers (Fig. 6).

When the pressure drops in the component supply line, the valve 28 is pressed against the gasket 30 by the action of the spring 29 and the pressure of the filled raft chambers, thereby ensuring the tightness of the non-return valve 21.

At the free ends of the hoses 19 or 20 (Fig. 5, Fig. 6) and the bodies of the non-return valves 21, plugs 31 and 32, respectively, are installed, which are removed before installation on the raft and connection to the balloon with a launching device.

After assembly, the cylinder with the starting device is locked and sealed, preventing spontaneous unscrewing.

Gas-filling devices (hereinafter referred to as “SPS”) are installed on life-saving appliances that meet the requirements of the International Code for Life-Saving Facilities, the Rules of the Russian Maritime Register of Shipping.

Gas filling devices can be operated in the temperature range:

- ambient air from minus 30 to plus 65 ° C;

- sea water from minus 1 to plus 30 ° C.

Gas filling devices (SGNP) provide the raft chambers to be filled to operating pressure at a temperature of minus 30 ° С for no more than 180 s, and at plus 20 ° С and plus 65 ° С - for no more than 60 s. Sea water temperature is from minus 1 to plus 30 ° С.

The materials and protective coatings from which the devices are made SGNP, resistant to decay, corrosion, exposure to sea water, petroleum products and fungi.

The following components should be used as components of the charge used in CNG cylinders:

- carbon dioxide (CO ₂ ) liquid (dew point not higher than minus 48 ° С, volume fraction of СО ₂ not less than 99.5%);

- gaseous nitrogen (N ₂ );

- rectified technical ethyl hydrolysis alcohol (C ₂ H ₅ OH). The following cylinders are used in SGNP cylinders: with a capacity of 5 l, 6 l, 8 l of alloy steel at a pressure of 19.6 MPa (200 kgf / cm ² ); with a capacity of 9 l from a metal composite material.

The MPC is tight at an excess pressure of 14.7 ^+0.25 MPa (150.0 ^+2.5 kgf / cm ² ).

The design of the starting device provides a structural element that allows you to visually determine whether it worked or not.

The starter cable is protected by a flexible conduit that prevents damage to the raft. In the internal cavity of the pipeline at the exit point of the launch cable, a safety element is installed to protect against ingress of water.

The starter and its connection to the cylinder is hermetic.

Cylinder СГНП has a safety device. The membrane of the safety device collapses at a pressure of:

- for cylinders SGNP-5 (6, 8) in the range from 25.0 to 27.5 MPa (255-280 kgf / cm ² ) at a temperature of plus 20 ° C and in the range from 20.6 to 27.5 MPa ( 210-280 kgf / cm ² ) at a temperature of plus 65 ° C;

for cylinders SGNP-9 in the range from 29.4 to 34.3 MPa (300-350 kgf / cm ² ) at a temperature of plus 20 ° C and plus 65 ° C.

Non-return valves are tight.

SGNP devices are operational after dumping in the raft from a height of 18 m.

Claims (9)

1. A gas filling device for inflatable rescue equipment, comprising a cylinder for storing charge components, a starting device including a housing located in the guide tube, a launch cable with a ball at one end, a membrane and a spring, a line for supplying components to the cameras of the inflatable rescue device, characterized in that the starting device comprises a rod with a sharp tip and channels for passage of charge components made with the possibility of displacement by means of a spring and depressurization of the membrane. 2. The device according to claim 1, characterized in that carbon dioxide, gaseous nitrogen and ethyl alcohol are used as charge components. 3. The device according to claim 1, characterized in that the starting device further comprises a safety device. 4. The device according to claim 3, characterized in that the safety device comprises a safety sleeve, a membrane and a copper gasket. 5. The device according to claim 1, characterized in that the starting device contains a sealing plug. 6. The device according to claim 1, characterized in that the line for supplying components to the chambers of an inflatable rescue device consists of three hoses, two non-return valves and a tee. 7. The device according to claim 6, characterized in that the non-return valves are sealed. 8. The device according to claim 1, characterized in that the starter cable is enclosed in a flexible pipe. 9. The device according to claim 1, characterized in that the starting device contains an element for determining the resource of his work.

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