RU201622U1 - Fire extinguishing device - Google Patents

Abstract

The claimed technical solution relates to devices for supplying a fire extinguishing agent to the protected compartments of the power plant against fire in aviation technology and can be used in pipelines and manifolds that allow the extinguishing agent to be removed from fire extinguishers into a volume with a fire hazardous area. The fire extinguishing agent supply device to the protected compartments of the power plant against fire consists of a fire extinguisher with a pressurized fire extinguishing agent containing a cylinder, an adapter, a pressure gauge and having the ability to be connected to the main pipeline passing into the spray manifolds, while the device is made with the possibility of connecting a second fire extinguisher containing a cylinder, an adapter, a pressure gauge, and each of the fire extinguishers contains two pyroheads, consisting of a body with a fitting for installing pyrocartridges and fuses, and inside the body there is a valve that closes the outlet opening with a collet lock, while the pyrohead valve is structurally designed so that after the pyrohead valve is triggered and the pyrohead valve is returned to its original position under the action of the return spring, the pyrohead valve remains in the extreme position in the direction of movement of the pyrohead valve to open, in addition, the first fire extinguisher is configured to connection to the main pipeline, through the fittings passing into the manifold and along the way receiving through the fittings the reserve pipeline from the second fire extinguisher, and to the reserve pipeline, which has the ability to dock through the fittings with the main pipeline of the second fire extinguisher. The technical result is the possibility of redundancy of the extinguishing agent supply line. 3 C.p. f-ly, 3 dwg

Description

The claimed technical solution relates to devices for supplying a fire extinguishing agent to the protected compartments of the power plant against fire in aviation technology and can be used in pipelines and manifolds that allow the extinguishing agent to be removed from fire extinguishers into a volume with a fire hazardous area.

A known fire protection and alarm system for a transported object (RU 2537134 C1, A62C 3/07, publ. 27.12.2004), which has a closed area and a hazard area located inside a closed area, containing: a pipe under pressure located inside the hazard area of the transported object and configured to have internal pressure, wherein at least part of the pressurized pipe is configured to leak in response to heat and generate a pneumatic signal, a pressure vessel located inside the hazard area of the transported object and connected to the pressurized pipe, moreover, the pressure vessel is configured to contain a fire extinguishing agent, a dispensing valve connected between the pressure pipe and the pressure vessel, wherein said dispensing valve is configured to receive a pneumatic signal and release the extinguishing agent upon receipt of a pneumatic signal, initiating a system located inside the hazard area of the transported object and connected to the pipe under pressure, wherein: the initiating system is configured to generate an initiating signal in response to the pneumatic signal and the initiating signal is transmitted to the area outside the hazard area of the transported object.

The disadvantages of this system include the following.

1) When placing this system in several compartments, there is no possibility of redundancy. Thus, if a fire occurs again, the absence of fire extinguishing agents will be revealed.

2) The fire extinguisher is located in a fire hazardous area and is not protected from temperature influences. The fire extinguisher may be triggered unintentionally.

3) The inability to record the system triggering. Known fire extinguishing system (RU 2244579 C1, A62C 3/00, publ. 20.01.2005), including a device for feeding a fire extinguishing composition into the volume of the protected room, consisting of at least one aerosol gas generator, and an associated fire extinguishing composition supply control system with sensors and a control and starting device, and the fire extinguishing composition feed device additionally contains at least one powder fire extinguisher connected to the control system with a solid propellant displacement gas generator, while the aerosol gas generator and the displacement gas generator of the powder fire extinguisher are equipped with cooling inert nozzles, and the feed control system fire extinguishing agent is programmed to trigger the fire extinguishing agent feed device as follows: in case of false triggering of sensors in the protected room or a minor fire, a command is sent to turn on only aerosol gas generators, in case of a fire in the entire volume of the room by a command is given to turn on all aerosol gas generators and, if necessary, if the fire is not extinguished, after a time delay, a command is automatically sent to turn on powder fire extinguishers, in case of a fire with an explosion and subsequent depressurization of the room, a command is given to simultaneously turn on all aerosol gas generators and powder fire extinguishers.

The disadvantages of this system include the following.

1) A large amount of extinguishing agents makes it irrational to use this system in small volumes.

2) Powder extinguishers leave a powder film in the area where the extinguishing agent is sprayed. While their gas counterparts evaporate due to the convection of the room. In addition, due to the deposition of a powder film on the pipes on the way to the fire-hazardous compartment, a part of the powder will be consumed in the blank and as it leaves the openings of the collector, the deposited powder will reduce the flow area for the extinguishing agent outlet.

3) A dry powder fire extinguisher occupies a larger volume than a gas fire extinguisher, which is not applicable in conditions of a lack of space.

The closest analogue, taken as a prototype, is a system describing methods and a device for passive, non-electric two-stage fire suppression to protect the environment from fire (RU 2564612 C2, A62C 37/08, publ. 10.10.2015), containing the first fire suppression unit comprising a first cylinder containing a first extinguishing agent, and a second fire suppression unit containing a second cylinder containing a second extinguishing agent, each fire suppression unit being configured to use a pressure difference between the corresponding cylindrical interior and the environment for distribution the corresponding extinguishing agent, the first cylinder is under a pressure greater than the environment, the first fire suppression unit generates a signal when the first extinguishing agent is discharged from the first cylinder, and the second fire suppression unit is configured to respond to the signal, and a connecting element connecting the first a fire suppression unit with a second fire suppression unit, the connecting element being configured to transmit a signal from the first fire suppression unit to the second fire suppression unit.

The disadvantages of this system include the following.

1) The non-electric fire suppression system is not able to independently give a signal to operate the service personnel.

2) In this system, there is no source of accumulation of information about system activation.

3) The performance of this fire suppression system cannot be monitored remotely, without connecting additional devices to it, which creates difficulties when using this system in moving vehicles.

The technical objective of the claimed technical solution is to create a fire extinguishing device with increased reliability, where, with a reduced total weight of the structure, the materials used have ease outside the fire hazardous zone, as well as fireproofness in a fire hazardous compartment, which allows them to be used in products where excess weight is critical. The technical result is the possibility of redundancy of the extinguishing agent supply line.

To achieve the set technical result, a fire extinguishing agent supply device to the protected compartments of the power plant from fire is proposed, consisting of two fire extinguishers with a pressurized extinguishing agent, each of which contains a cylinder, an adapter, a pressure gauge and a pyrohead, main pipelines and spray manifolds, each of which fire extinguishers contains at least two pyroheads, consisting of a body with a fitting for installing pyro cartridges and fuses, and inside the body there is a valve that closes the outlet with a collet lock, while the pyrohead valve is structurally designed so that after the pyrohead is triggered and returned the pyrohead valve under the action of the return spring to the initial position, the pyrohead valve remains in the extreme position in the direction of movement of the pyrohead valve to open, in addition, from the first fire extinguisher the main pipeline made of aluminum alloy through fittings y goes into a manifold made of titanium alloy, along the way receiving through the titanium fittings the reserve pipeline from the second fire extinguisher, while the reserve pipeline of the first fire extinguisher, also made of aluminum alloy, is docked through the titanium fittings with the main pipeline of the second fire extinguisher.

Figures 1, 2 and 3 are presented to clarify the technical essence of the utility model.

FIG. 1 shows a fire extinguishing device, where:

1 - fire extinguisher;

2 - main pipeline;

3 - spray manifold;

4 - lodgment.

FIG. 2 shows a fire extinguisher, where:

5 - balloon;

6 - adapter;

7 - manometer;

8 - pyrohead.

FIG. 3 shows the valve pyrohead, where:

9 - valve;

10 - fuse;

11 - sealing ring with a diameter of 13 mm;

12 - sealing ring with a diameter of 22.5 mm;

13 - retaining ring;

14 - lock nut;

15 - collet lock;

16 - persistent cover;

17 - protective rubber cap;

18 - safety check with a flag;

19 - clutch;

20 - safety plug;

21 - union nut;

22 - lock body;

23 - pyrohead body assembly;

24 - sealing ring with a diameter of 30 mm;

25 - nut;

26 - fitting for installing pyrocartridges and fuses;

27 - outlet fitting;

28 - outlet.

The piping system allows the extinguishers to be located outside the fire hazardous area, as a result of which additional protection from the effects of temperatures is not required. In the event of a failure of one of the fire extinguishers, or the need to supply a fire extinguishing agent to one zone several times, it is possible to reserve the extinguishing agent supply lines. Redundancy is achieved by outputting two pipelines from two pyroheads. From the first fire extinguisher, the main pipeline passes through the titanium fittings into the manifold, along the way receiving through the titanium fittings the reserve pipeline from the second fire extinguisher. The second pipeline of the first fire extinguisher (backup) is connected through titanium fittings with the main pipeline of the second fire extinguisher. Redundancy is only possible when using a fire extinguisher with at least two pyroheads.

The redundancy system results in fewer units, which reduces the overall technical complexity of the system and its weight, and also makes it possible to abandon adapters in fire extinguishers to fire extinguishing agent routes, unlike the prototype.

The design of the pyrohead is due to the requirement of blocking the backstop of the extinguishing agent after the pyro cartridge is triggered.

The reserve pipeline for the transfer of extinguishing agent in case of failure of one of the fire extinguishers allows you to manually activate the second fire extinguisher using the pilot's control panel. The pilot can judge the actuation of the system by the temperature readings in the engine compartments thanks to sensors (2 groups of sensors for each compartment out of 2), which makes it possible to accurately determine the state of the entire engine compartment.

To facilitate construction, the piping is made of aluminum alloy. Collectors located in the fire hazardous area are made of titanium alloy, which leads to fire resistance in the fire hazardous compartment.

The transition of pipelines to collectors is provided through titanium fittings. Thus, the structure is fireproof. Due to a decrease in the cross-sectional diameter from the pipelines to the collectors, a greater pressure and head of the extinguishing agent is achieved at the outlet from the openings in the collectors. From two titanium guides, the manifolds branch into two lines passing from above and below the proposed fire hazardous object (power plant, fuel tank). The manifolds are provided with openings for the extinguishing agent outlet. Mounting of collectors in a fire hazardous area is carried out with fireproof fittings.

The fire extinguishing agent supply device to the protected compartments of the power plant against fire is designed to supply the extinguishing agent to the protected compartments of the power plant, which is in the fire extinguishers under pressure.

The fire extinguishing agent supply device to the protected compartments of the power plant from fire (Fig. 1) includes: two fire extinguishers (1) with a pressurized extinguishing agent, main pipelines (2) and spray manifolds (3) to provide fire extinguishing in two stages.

Fire extinguishers are located outside the fire hazardous compartment and are attached to the cradle (4) installed vertically.

The fire extinguisher (Fig. 2) includes: a balloon (5), an adapter (6), a pressure gauge (7), pyroheads (8).

The adapter is built into the cylinder. The adapter contains: a pressure gauge (7) to check the charging pressure and two pyroheads (8).

The pyrohead (Fig. 3) consists of the body of the pyrohead assembly (23), with the outlet fitting (27) and the fitting for installing the pyro cartridges and fuses (26).

Inside the body there is a valve (9), which closes the outlet (28) using a collet lock (15).

The collet lock (15) consists of a lock body (22), a coupling (19), a collet and a thrust cover (16).

In the construction of the body of the pyrohead assembly (23), there are also O-rings (11), (12) and (24) with diameters of 13 mm, 22.5 mm and 30 mm, respectively, a retaining ring (13) and a lock nut (14) for preventing spontaneous unscrewing of the collet lock (15).

To block the collet lock (15), a safety check with a flag (18) is provided.

A union nut (21) is provided to connect the fire extinguishing agent supply line to the pyrohead.

A nut (25) is provided to connect the pyrohead to the fire extinguisher.

To protect the collet lock from possible ingress of foreign particles, water splashes and polluting liquids that can cause the pyrohead to fail, a protective rubber cap (17) is installed on the upper part of the pyrohead.

On the pyrohead (on a charged fire extinguisher before installation), a safety check with a flag (18) and a union nut (21), with a safety plug (20) must be installed.

The pyrohead (8) works as follows. In the event of a fire, electric voltage is supplied from the fire extinguishing device control panel to the igniter (10) of the corresponding pyrohead, depending on the place of its origin.

After triggering the squibs, the collet lock (15) holding the valve (9) in the closed position is opened. The valve (9) is thereby released and, under the action of pressure in the cylinder (5), opens, as a result of which the extinguishing agent from the fire extinguisher enters the corresponding pipelines of the fire extinguishing system.

After the discharge of the fire extinguishing agent charge, the pressure in the fire extinguisher drops, and the valve (9), under the influence of the return spring, returns to its original position, preventing the fire extinguisher from filling with fire extinguishing agent when the next fire extinguisher connected to this pipeline is triggered.

The valve (9) of the pyrohead is structurally made so that after the pyrohead is triggered and the valve returns to its original position (after the pressure in the fire extinguisher has dropped), the valve (9) remains in the extreme position in the direction of the valve movement to open, protruding at a distance of 12 to 15 mm above the top plane of the stop cover (16). This signals that the pyrohead has worked (visually, this can be checked by removing the protective rubber cap (17) from the pyrohead (8).

Claims (4)

1. A device for supplying a fire extinguishing agent to the protected compartments of the power plant against fire, consisting of a fire extinguisher with a pressurized fire extinguishing agent containing a cylinder, an adapter, a pressure gauge and having the ability to connect to the main pipeline passing into the spray manifold, characterized in that the device is made with the possibility connecting a second fire extinguisher containing a cylinder, an adapter, a pressure gauge, and each of the fire extinguishers contains two pyroheads, consisting of a body with a fitting for installing pyrocartridges and fuses, and inside the body there is a valve that, using a collet lock, closes the outlet, while the pyrohead valve is structurally is made so that after the pyrohead valve is triggered and the pyrohead valve is returned to its original position under the action of the return spring, the pyrohead valve remains in the extreme position in the direction of movement of the pyrohead valve to open, in addition, the first fire extinguisher is made It can be connected to the main pipeline, through the fittings that passes into the manifold and on the way that receives through the fittings the reserve pipeline from the second fire extinguisher, and to the reserve pipeline, which has the ability to dock through the fittings with the main pipeline of the second fire extinguisher. 2. The device according to claim. 1, characterized in that the main and reserve pipelines are made of aluminum alloy. 3. A device according to claim 1, characterized in that the collector is made of titanium alloy. 4. The device according to claim 1, characterized in that the reinforcement is made of titanium alloy.

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