RU1839095C - Fire-fighting appliance - Google Patents

Description

FIELD OF THE INVENTION The invention relates to fire protection techniques for isolated objects that are not accessible for maintenance during operation.

A fire protection device is known (ed. St. USSR No. 889682, January 16, 78), comprising a closed reservoir with a fire-extinguishing liquid mainly based on halocarbons and locking and starting means, characterized in that in order to increase reliability and simplify the design of the device, it is equipped with an electric heater located in the extinguishing liquid of a closed tank.

The disadvantages of the known device are as follows:

it is complex in design, as it contains hydraulic and electrical systems that ensure its operability;

it is difficult to operate due to the presence of control and starting devices and a hydraulic system;

requires special devices to prepare for operation and maintenance during long-term storage. All of the above increases the cost of the device and reduces its reliability during operation.

A fire extinguishing device is also known (ed. St. USSR No. 689681, 03/29/77), containing a container with a fire-extinguishing agent, a profiled cartridge with a charge of a flammable oxygen-containing substance and a fuse fixed in it a cartridge on the outside of the container, characterized in that, in order to increase the efficiency of extinguishing the fire, the extinguishing agent is enclosed in microcapsules of thermoplastic material, and the flammable oxygen-containing charge substance is used as a fuse.

The disadvantages of the known device are as follows: when using solid fuel nitrogen generators (A3G), a component of which is a solid nitrogen source (TIAZ) to create an alternative volumetric fire extinguishing system instead of a similar system using freons (freons),

devices for fixing a solid nitrogen source (TIAZ) are not provided;

the desired concentration of the TIAZ gas mixture necessary for fire fighting is not provided;

when using the known device, parts of the cartridge with a charge and a flammable oxygen-containing substance may fall out, leading to damage to the burning elements;

In the known technical solution there are no devices providing the required concentration of TIAZ.

The aim of the proposed technical solution is to expand the operational capabilities of the device, increasing the reliability of its safety

during operation and increasing the efficiency of fire fighting.

This is achieved by the fact that a pyro cartridge with a charge and an igniter is introduced into a device containing a container with a fire extinguishing agent, a basket is introduced, an additional chamber with a thrust sector located between them, a cylindrical nozzle and an ejector. Inside the casing from the sector, circular grooves are made under the basket, which

0 is provided with windows located on a cylindrical surface. In the sector, grooves are filled in which grids are installed. Behind the grid in the sector, an annular cavity is made with holes through which

5, the gas mixture enters an additional chamber with a filter (e.g. glass wool) to prevent the exit of burning products of charge and fuse. The additional chamber is equipped with a nozzle connected to it

0 by threaded connection. A snap ring with a sleeve and a snap ring with a safety element are installed in the nozzle. On the outside, the nozzle is fixed on guides with an ejector with the ability to move along the axis of the housing. Solid nitrogen sources (TIAZ) located in a basket were used as an extinguishing agent. Gaskets are located between the TIAZ blocks,

0 ensuring the normal release of nitrogen from TIAZ during operation of the device.

, The drawing shows the proposed device.

The device consists of a housing 1. In the end part 2, in which the igniter 3 with an igniter 4 is located, an annular groove 5 is made under the basket 6, TIAZs 7 are installed in it. Gaskets 8 are located between them. In the basket 6 are made

0 windows 9, gaskets 8 and windows 9 provide a complete decomposition of TIAZ 7 during operation of the device. Inside the housing 1, there is a sector 10c with an annular groove 6, on which the basket 6 abuts. In sector 10, through grooves 11 are made, on which grids 12 are installed to prevent solid elements (not shown) from forming during the combustion of TIAZs 7. In sector 10, an annular cavity 13 with holes 14 in an additional chamber 15 in which a filter 16 is located (for example, glass wool). The chamber 15 is equipped with a nozzle 17 in which a retaining ring 18 is mounted, which fixes a liner 9 with a profiled hole 20 for i gas outlet from the housing 1, and a stop ring I1 for attaching a safety element 22 made in the form of a mesh. Element 22 further protects E precipitation of solid, hot products during the first operation of the device. Outside the nozzle 17 on the rails 23, with a possibility of tapping along the axis of the device, a hector 24 is installed, which ensures a given i concentration of the gas mixture, which facilitates the complete mixing of nitrogen with ambient air and the active filling of the room in which the fire occurs .

The operation of the device is as follows.

When an electric signal is applied to g, the iropatron 3 fires and the powder igniter 4 ignites. The temperature and pressure in the housing 1 increase, f I- / Zy 7 decompose almost simultaneously, due to the presence of gaskets 8 between them and a basket 6 with windows 9. The gas and gas mixture is hot through the slots 11 and openings 14 g enters the additional chamber 5, where the gas mixture is freed from burning elements (carbon particles), and its temperature decreases. This is especially important when it is necessary to maintain a burning material that is on fire. Next, the gas-EEA mixture, mainly consisting of nitrogen, r flows into nozzles 17 and through the critical section of the hole 20 of the liner 19 flows out into the ejector 24. Its size and size

The critical section of the aperture 20 is selected so as to provide the required concentration of the nitrogen-air gas mixture, which ensures quick fire fighting.

Implementation of the device with a basket mounted inside the housing, installation of TIAZs in the basket, between which gaskets are located, sectors with grooves located in the annular cavity on which the grids are installed, introduction of an additional chamber in which the filter is located, and installation of a nozzle, which includes a snap ring with liner, a thrust ring with a grid and guides with an ejector allows to expand the operational capabilities of the device, contributes to increased fire extinguishing. The device can provide fire extinguishing at any point in the room by displacing the air through the ventilation pipe and filling the mixture with air and nitrogen in the required ratio, which is provided by the ejector.

The company manufactured the proposed device, which has the following characteristics:

Nitrogen consumption per 1 m3

according to the public, kg 0.22

TIAZ consumption, kg 0.41

Work time, s. 6-12

Gas temperature

after the ejector, ° С100 ° С

The experimental device has been successfully tested. It is recommended for implementation in the enterprise.

(56) USSR author's certificate No. 689681. cl, A 62 C 35/00, 1984.

Claims (2)

1. DEVICE FOR FIRE EXTINGUISHING, comprising a housing with a gas generator installed in it, an i-cartridge with an igniter and a fire agent, characterized in that, in order to increase the reliability in operation and expand the operational capabilities of the devices ) a perforated container is installed in the housing, resting on an o: located in the housing, having an annular cavity, moreover, solid fuel gas generators are installed in the perforated container45 between which are fixed gaskets, in this case, grooves are made in the side surface of the base, in which the mesh is installed, holes are made in the annular cavity, and the nozzles are provided with 50 snap ring with liner with profiled bore and snap ring with safety element. 2. The device according to claim 1, characterized in that the solid fuel gas generator 551 is made of blocks with solid fuel; source of nitrogen. g f. 7 fO // l0g X7 & 7 ff g 22 & 16 23 & 21